HEATER

Abstract

Disclosed is a heater including a housing assembly and a heating assembly. The housing assembly includes installation housings nested with each other in sequence, to make the housing assembly retractable, when the housing assembly is extended, interiors of the plurality of housing assemblies communicate with each other to form a heat dissipation channel, the installation housing located at a bottom of the housing assembly is provided with an air inlet, and the installation housing located at a top of the housing assembly is provided with a heat dissipation port; and the heating assembly provided inside the heat dissipation channel.

Description

CROSS-REFERENCES TO RELATED APPLICATIONS

This present application claims priority to Chinese Patent Application Nos. 202211742883.4, 202223603962.5, and 202223601989.0, all filed with CNIPA on Dec. 29, 2022, the entire contents of which are incorporated herein by reference.

FIELD

The present disclosure relates to the field of heaters, and in particular to a heater.

BACKGROUND

The heaters on the market, which have large structural sizes, will occupy large space and are inconvenient for storage when not in use.

SUMMARY

The main purpose of the present disclosure is to provide a heater, aiming to reduce the storage volume of the heater and improve storage portability.

In order to solve the above objectives, the present disclosure provides a heater including a housing assembly and a heating assembly.

The housing assembly includes at least two installation housings nested with each other to make the housing assembly retractable, when the housing assembly is extended, interiors of the housing assemblies communicate with each other to form a heat dissipation channel, the installation housing located at a bottom of the housing assembly is provided with an air inlet, and the installation housing located at a top of the housing assembly is provided with a heat dissipation port.

The heating assembly is provided inside the heat dissipation channel.

In an embodiment of the present disclosure, the heating assembly is provided around a circumference of the heat dissipation channel.

In an embodiment of the present disclosure, the heating assembly is a heating wire provided around the circumference of the heat dissipation channel.

In an embodiment of the present disclosure, the heating assembly includes a heating tube provided around the circumference of the heat dissipation channel.

In an embodiment of the present disclosure, the heating assembly further includes heat dissipation plates sequentially sleeved on the heating tube along the circumference of the heat dissipation channel.

In an embodiment of the present disclosure, a surface of the heat dissipation plate is parallel to a length direction of the heat dissipation channel.

In an embodiment of the present disclosure, the heater further includes a bracket, the bracket is horizontally provided inside the installation housing located at the bottom of the housing assembly to divide an inner space of the housing assembly into a heat dissipation channel and an air intake space distributed up and down, and the bracket is provided with a ventilation hole communicating with the air intake space and the heat dissipation channel; and

the air inlet communicates with the air intake space, and the heating assembly is provided inside the heat dissipation channel.

In an embodiment of the present disclosure, the bracket is provided with a support assembly extending upwards along a height direction of the housing assembly, and the heating assembly is supported by the support assembly.

In an embodiment of the present disclosure, the air inlet is provided on a side wall of the installation housing to form a side air inlet; and

the heater includes side air inlets distributed at intervals along a circumference of the installation housing.

In an embodiment of the present disclosure, the installation housing is provided with at least two rows of side air inlets along a height direction of the installation housing, each row of side air inlets includes the plurality of side air inlets distributed at intervals along the circumference of the installation housing, and two adjacent rows of side air inlets are staggered.

In an embodiment of the present disclosure, the installation housing is a cylindrical body with two ends communicated with each other, the heat dissipation port is formed at a top opening of the installation housing located at the top of the housing assembly, and the air inlet is formed at a bottom opening of the installation housing located at the bottom of the housing assembly.

In an embodiment of the present disclosure, the housing assembly further includes a top grid cover for covering the heat dissipation port; and/or

the housing assembly further includes a bottom grid cover for covering the air inlet.

In an embodiment of the present disclosure, the two installation housings nested with each other are respectively a first installation housing and a second installation housing, and the second installation housing is provided inside the first installation housing; and

a guiding rail is provided between the first installation housing and the second installation housing, the guiding rail extends along a height direction of the first installation housing, and the second installation housing slides along the guiding rail to pass in and out from the top opening of the first installation housing to the first installation housing.

In an embodiment of the present disclosure, a limiting portion protrudes from a top inner wall of the first installation housing, a stopper portion protrudes from a bottom outer wall of the second installation housing, and the stopper portion is opposite to the limiting portion.

In an embodiment of the present disclosure, a guiding groove is formed at the stopper portion, and the guiding rail is provided inside the guiding groove.

In an embodiment of the present disclosure, the housing assembly further includes a locking and releasing structure provided between the first installation housing and the second installation housing to lock the second installation housing and prevent the second installation housing from falling back when the second installation housing is extended.

In an embodiment of the present disclosure, the locking and releasing structure includes a first elastic protrusion and a clamping hole; the first elastic protrusion and the clamping hole are respectively provided at the guiding rail and a surface opposite to the guiding rail; and

when the second installation housing is extended in place, the first elastic protrusion is inserted into the clamping hole to lock the second installation housing.

In an embodiment of the present disclosure, the locking and releasing structure further includes a second elastic protrusion, the second elastic protrusion and the first elastic protrusion are distributed at intervals along a height direction of the guiding rail; and

when the second installation housing is stored in the first installation housing, the second elastic protrusion is inserted into the clamping hole to lock the second installation housing.

In an embodiment of the present disclosure, the locking and releasing structure includes an elastic arm provided at a surface of the guiding rail, and the elastic arm extends upward along a vertical direction; and

when the second installation housing is extended in place, a free end of the elastic arm supports the second installation housing to prevent the second installation housing from falling back.

In an embodiment of the present disclosure, a limiting protrusion protrudes from a free end of an elastic arm towards the second installation housing, a guiding slope is formed at a lower surface of the limiting protrusion; and

when the second installation housing is extended, the second installation housing moves along the guiding slope to make the elastic arm retract until the second installation housing passes the elastic arm and is supported by the free end of the elastic arm.

In an embodiment of the present disclosure, the locking and releasing structure is a support pad provided at a top of the guiding rail, and the second installation housing is configured to rotate relative to the first installation housing; and

when the second installation housing is extended in place, the second installation housing rotates relative to the first installation housing to allow the support pad to support the stopper portion outside the guiding groove.

In an embodiment of the present disclosure, a surface of the support pad away from the guiding rail is provided with a limiting groove, and a positioning portion protrudes from a lower surface of the stopper portion;

when the stopper portion is supported by the support pad, the positioning portion is provided in the limiting groove; and/or

a blocking portion protrudes from the surface of the support pad away from the guiding rail to limit a rotation angle of the second installation housing.

In an embodiment of the present disclosure, the housing assembly further includes a protective pad for covering an edge of the guiding groove.

In an embodiment of the present disclosure, the housing assembly further includes a guiding rail cushion pad provided at an end of the guiding rail.

In an embodiment of the present disclosure, an insertion hole protrudes from the end of the guiding rail, an insertion portion protrudes from a side of the guiding rail cushion pad towards the guiding rail, and the insertion portion is inserted into the insertion hole.

In an embodiment of the present disclosure, the insertion portion is provided with a hook, a clamping port is formed at a hole wall of the insertion hole, and the hook is hooked in the clamping port.

In an embodiment of the present disclosure, the heater is further provided with a control switch provided on an outer wall of the installation housing located at the bottom of the housing assembly and is electrically connected to the heater assembly; and/or

the heater further includes an air supply assembly provided inside the installation housing located at the bottom of the housing assembly, to make hot air in the heat dissipation channel blown out from the heat dissipation port, and allow outside air to enter the heat dissipation channel from the air inlet for gas circulation.

In the embodiments of the present disclosure, the housing of the heater is retractable. When the heater is in use, the housing assembly is extended to form a high tower structure, and the heat dissipation channel similar to a chimney is formed inside the housing. In this case, when the heating assembly is in operation, the air in the heat dissipation channel is heated up, and the gas will expand to cause a decrease in density, then the hot gas will rise upwards and will be discharged from the top heat dissipation port to dissipate heat outwards. In addition, since the internal air pressure of the heat dissipation channel decreases, external cold air will enter the heat dissipation channel from the bottom air inlet, to realize the gas exchange between the heat dissipation channel and the external circumstances. The heating assembly is provided in the installation housing located at the bottom of the housing assembly, which can avoid a too high temperature of the wind-blown from the top heat dissipation port or a too high temperature at the top heat dissipation port. In this way, risks to burn users or risks of hidden safety hazards can be reduced.

When the heater is not in use, the housing assembly can be retracted to reduce the volume of the heater, thereby reducing the space occupied by the heater and improving the storage portability of the heater.

BRIEF DESCRIPTION OF THE DRAWINGS

To illustrate the embodiments of the present disclosure more clearly, the accompanying drawings for describing the embodiments are introduced briefly in the following. Apparently, the accompanying drawings in the following description are only some embodiments of the present disclosure.

FIG. 1 is a structural view of a heater in a storage state according to an embodiment of the present disclosure.

FIG. 2 is a structural view of the heater in a stretched state in FIG. 1.

FIG. 3 is a cross-sectional view of the heater in the storage state according to the first embodiment in FIG. 1.

FIG. 4 is a cross-sectional view of the heater in the stretched state in FIG. 3.

FIG. 5 is an exploded view of the heater in FIG. 3.

FIG. 6 is a structural view of an installation housing of the heater according to the first embodiment in FIG. 5.

FIG. 7 is an exploded view of FIG. 6.

FIG. 8 is a structural view of the installation housing of the heater according to a second embodiment in FIG. 5.

FIG. 9 is an exploded view of FIG. 8.

FIG. 10 is a structural view of a support pad in FIG. 8.

FIG. 11 is a structural view of a protective pad in FIG. 8.

FIG. 12 is a structural view of the installation housing of the heater according to a third embodiment in FIG. 5.

FIG. 13 is a cross-sectional view of the heater in the stretched state according to the second embodiment of the present disclosure.

FIG. 14 is an exploded view of the heater in FIG. 13.

FIG. 15 is a structural view of the installation housing of the heater according to the first embodiment in FIG. 14.

FIG. 16 is an exploded view of FIG. 15.

FIG. 17 is a structural view of the installation housing of the heater according to the first embodiment in FIG. 14.

FIG. 18 is an exploded view of FIG. 17.

FIG. 19 is a cross-sectional view of the heater in the storage state according to a third embodiment of the present disclosure.

FIG. 20 is a cross-sectional view of the heater in the stretched state in FIG. 19.

FIG. 21 is an enlarged view at A position in FIG. 20.

FIG. 22 is a structural view of the installation housing of the heater according to the first embodiment in FIG. 19.

FIG. 23 is an exploded view of FIG. 22.

FIG. 24 is a structural view of a guiding rail in FIG. 23.

FIG. 25 is a structural view of the installation housing of the heater according to the second embodiment in FIG. 19.

FIG. 26 is a cross-sectional view of the heater according to a fourth embodiment of the present disclosure.

FIG. 27 is a structural view of the heater in the storage state according to a fifth embodiment of the present disclosure.

FIG. 28 is a structural view of the heater in the stretched state in FIG. 27.

The realization of the embodiments of the present disclosure are further described with reference to the accompanying drawings.

DETAILED DESCRIPTION OF THE DISCLOSURE

The embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. The embodiments to be described are only some rather than all of the embodiments of the present disclosure.

It should be noted that all the directional indications (such as up, down, left, right, front, rear . . . ) in the embodiments of the present disclosure are only used to explain the relative positional relationship, movement, or the like of the components in a posture (as shown in the drawings). If the specific posture changes, the directional indication will change accordingly.

In the present disclosure, unless otherwise clearly specified and limited, the terms “connected”, “fixed”, etc. should be interpreted broadly. For example, “fixed” can be a fixed connection, a detachable connection, or a whole; can be a mechanical connection or an electrical connection; may be directly connected, or indirectly connected through an intermediate medium, and may be the internal communication between two elements or the interaction relationship between two elements, unless specifically defined otherwise. The specific meaning of the above-mentioned terms in the present disclosure can be understood according to specific circumstances.

Besides, the descriptions associated with, e.g. “first” and “second,” in the present disclosure are merely for descriptive purposes, and cannot be understood as indicating or suggesting relative importance or impliedly indicating the number of the indicated feature. Therefore, the feature associated with “first” or “second” can expressly or impliedly include at least one such feature.

The present disclosure provides a heater 100.

As shown in FIG. 1 and FIG. 2, in some embodiments of the heater 100 of the present disclosure, the heater 100 includes a housing assembly 10 and a heating assembly 20.

The housing assembly 10 includes at least two installation housings 11 nested with each other to make the housing assembly 10 retractable. When the housing assembly 10 is extended, interiors of the housing assemblies 10 communicate with each other to form a heat dissipation channel 12. The installation housing 11 located at a bottom of the housing assembly is provided with an air inlet 112, and the installation housing 11 located at a top of the housing assembly is provided with a heat dissipation port 111.

The heating assembly 20 is provided inside the heat dissipation channel 12.

The heater 100 in the present disclosure includes a housing assembly 10 as an installation base and a heating assembly 20 placed in the housing assembly 10. The heating assembly 20 may be an oil heater or a resistance heater. The housing assembly 10 includes installation housings 11 sequentially nested with each other along the height direction of the housing assembly 10. Therefore, the housing assembly 10 is retractable in the height direction. When the heater 100 is in use, the housing assembly 10 is extended to form a high tower structure, and the heat dissipation channel 12 similar to a chimney is formed inside the housing. The heating assembly 20 is provided inside the heat dissipation channel 12, which means that the heating assembly 20 is connected to one of the installation housings 11. Therefore, when the housing assembly 10 is extended, the heating assembly 20 rises to the corresponding height position along with the installation housing 11. For example, the heating assembly 20 can be connected to the installation housing 11 that is located in the highest level when stretching out, to enable the heating assembly 20 to rise to the upper portion of the heat dissipation channel 12 along with the installation housing 11. Or the heating assembly 20 may be connected to any installation housing 11 at the middle position when stretching out, or may be fixed on the bottom wall of the housing assembly 10, which will not be limited here. In this case, when the heating assembly 20 is in operation, the air in the heat dissipation channel 12 is heated up, and the gas expands to cause a decrease in density, then the hot gas will rise upwards and is discharged from the top heat dissipation port 111 to dissipate heat outwards. In addition, due to the reduction of the internal air pressure in the heat dissipation channel 12, the external cold air will enter the heat dissipation channel 12 from the bottom air inlet 112, to realize the gas exchange between the heat dissipation channel 12 and the external circumstances. In some embodiments, the heating assembly 20 is provided inside the installation housing 11 located at the bottom of the housing assembly, to avoid a too high temperature of the wind-blown from the top heat dissipation port 111 or a too high temperature at the top heat dissipation port 111. In this way, risks to burn users or risks of hidden safety hazards can be reduced.

When the heater 100 is not in use, the housing assembly 10 can be retracted to reduce the volume of the heater 100, to reduce the space occupied by the heater 100 and improving the storage portability of the heater 100.

It should be noted that, in this embodiment, the heat dissipation port 111 can be provided on the top wall of the installation housing 11 located at the top of the housing assembly, or can be provided on the side wall at a distance from the bottom wall. Likewise, the air inlet 112 can be provided on the bottom wall of the installation housing at the bottom of the housing assembly, or can be provided on the side wall at a distance from the bottom wall. When the air inlet 112 is provided on the bottom wall, the housing assembly 10 further includes a foot 17, to make the bottom of the housing assembly 10 suspended and form an air inlet gap.

Therefore, it can be understood that in the embodiment of the present disclosure, the housing of the heater 100 is retractable. When the heater 100 is in use, the housing assembly 10 is extended to form a high tower structure, and the heat dissipation channel 12 similar to a chimney is formed inside the housing. In this case, when the heating assembly 20 is in operation, the air in the heat dissipation channel 12 is heated up, and the gas will expand to cause a decrease in density, then the hot gas will rise upwards and will be discharged from the top heat dissipation port 111 to dissipate heat outwards. In addition, since the internal air pressure of the heat dissipation channel 12 decreases, external cold air will enter the heat dissipation channel 12 from the bottom air inlet 112, to realize the gas exchange between the heat dissipation channel 12 and the external circumstances. The heating assembly 20 is provided in the installation housing 11 located at the bottom of the housing assembly, which can avoid a too high temperature of the wind-blown from the top heat dissipation port 111 or a too high temperature at the top heat dissipation port 111. In this way, risks to burn users or risks of hidden safety hazards can be reduced.

When the heater 100 is not in use, the housing assembly 10 can be retracted to reduce the volume of the heater 100, to reduce the space occupied by the heater 100 and improving the storage portability of the heater 100.

As shown in FIG. 5 and FIG. 14, in some embodiments of the heater 100 of the present disclosure, the heating assembly 20 is provided around the circumference of the heat dissipation channel 12.

In this embodiment, the heating assembly 20 is provided around the circumference of the heat dissipation channel 12, to increase the contact area between the heat dissipation assembly and the gas in the heat dissipation channel and improve the heating efficiency of the heating assembly 20 on the gas. Besides, the heating assembly 20 surrounds the circumference of the heat dissipation channel 12. In this way, gas in the heat dissipation channel 12 can be heated uniformly to avoid the nonuniform temperature of the gas, and the heating efficiency of the heater 100 can be increased successively.

In some embodiments of the heater 100 of the present disclosure, the heating assembly 20 includes heating wires provided around the circumference of the heat dissipation channel 12.

In this embodiment, the heating wire is used as the heating assembly. The heating wire is generally the resistive heating wire, which will generate heat due to its high resistance and will convert electric energy into heat energy when being energized. The heating wire can be made of iron-chromium-aluminum, nickel-chromium electric heating alloy, and the like, which has high oxidation resistance and is not easy to damage. In this embodiment, the heating wire is provided around the circumference of the heat dissipation channel 12, which means that the heating wire surrounds the heat dissipation channel 12 at the same height, or the heating wire can be spirally wound in the heat dissipation channel 12. In the above two ways, gas in the heat dissipation channel 12 can be uniformly heated, and the heating efficiency of the heating assembly 20 can be improved.

As shown in FIG. 3 and FIG. 4, in some embodiments of the heater 100 of the present disclosure, the heating assembly 20 includes a heating tube 21 provided around the circumference of the heat dissipation channel 12.

In this embodiment, the heating assembly 20 includes a heating tube 21. The heating tube 21 can be an oil heating tube 21 or a resistance heating tube 21, which will not be limited here. The heating tube 21 is provided around the circumference of the heat dissipation channel 12, which enables gas passing through the heat dissipation channel 12 to be heated uniformly by the heating tube 21. Thus, the heating efficiency of the heater 100 will be improved.

As shown in FIG. 3, in some embodiments of the heater 100 of the present disclosure, the heating assembly 20 further includes heat dissipation plates 22 sequentially sleeved on the heating tube 21 along the circumference of the heat dissipation channel 12.

In this embodiment, the heating assembly 20 further includes heat dissipation plates 22 provided along the circumference of the heat dissipation channel 12 and sleeved on the heating tube 21. In this way, part heat generated by the heating tube 21 can be transferred to the heat dissipation plate 22 to heat the gas, and the contact area between the heating assembly 20 and the gas can be increased by setting the heat dissipation plate 22, to improve the heating efficiency of the heating assembly 20 on the gas. The heat dissipation plate 22 is generally made of materials with high heat conduction efficiency, such as aluminum, aluminum alloy, copper or copper alloy, and the like, which have high heat dissipation efficiency and can improve heat conduction efficiency. Therefore, the heating efficiency can be further improved.

In addition, each heat dissipation plate 22 is sleeved on the heating tube 21. In this case, the angle α between the plate surface of each heat dissipation plate 22 and the height direction of the heat dissipation channel 12 satisfies 0°≤α≤90°, which means that a channel for gas to flow can be formed between the surfaces of two adjacent heat dissipation plates 22. In this case, the gas can flow along the surface of the heat dissipation plate 22 to be fully heated by the heat dissipation plates 22, to improve the heating efficiency. In addition, the heat dissipation plate 22 is not placed across the heat dissipation channel 12, but is provided at an acute angle. Thus, the heat dissipation plate 22 will not hinder the flow of gas. In an embodiment, the plate surface of the heat dissipation plate 22 is parallel to the height direction of the heat dissipation channel 12 to minimize the influence of the arrangement of the heat dissipation plate 22 on the gas flow.

As shown in FIG. 4, in some embodiments of the heater 100 of the present disclosure, the surface of the heat dissipation plate 22 is parallel to the length direction of the heat dissipation channel 12.

In this embodiment, the plate surface of the heat dissipation plate 22 is parallel to the length direction of the heat dissipation channel 12. In this way, the influence of the arrangement of the heat dissipation plate 22 on the gas flow can be reduced to the greatest extent, and the heat dissipation plate 22 is prevented from hindering the gas flow, which can ensure the heat dissipation efficiency of the heater 100.

As shown in FIG. 3, in some embodiments of the heater 100 of the present disclosure, the heater 100 further includes a bracket 30, and the bracket 30 is horizontally provided inside the installation housing 11 located at the bottom of the housing assembly to divide the internal space of the housing assembly 10 into a heat dissipation channel 12 and an air intake space 32 distributed up and down. The bracket 30 is provided with a ventilation hole 31 communicating with the air intake space 32 and the heat dissipation channel 12.

The air inlet 112 communicates with the air intake space 32, and the heating assembly 20 is placed in the heat dissipation channel 12.

In this embodiment, the heater 100 further includes a bracket 30, which is used to support the heating assembly 20 and divide the inner space of the housing assembly 10 into an air intake space 32 and a heat dissipation channel 12. In this case, by setting the air intake space 32, it can be ensured that after entering the air intake space 32, the external airflow will pass through the ventilation hole 31 on the bracket 30, and then blows to the heating assembly 20 to improve the heating efficiency of the heating assembly 20 on the airflow.

As shown in FIG. 3, in some embodiments of the heater 100 of the present disclosure, the bracket 30 is provided with a support assembly 33 extending upwards along the height direction of the housing assembly 10, and the heating assembly 20 is supported by the support assembly 33.

In this embodiment, the bracket 30 is provided with a support assembly 33 extending upwards from the bracket 30, and the free end of the support assembly 33 is fixed to the heating tube 21. In this way, the heating tube 21 can be suspended to prevent other components from being burned due to a direct connection between the heating tube 21 and other components inside the heat dissipation 12, and use safety can be improved.

As shown in FIG. 4, in some embodiments of the heater 100 of the present disclosure, the support assembly 33 includes an extension section 331 and a connection section 332. The extension section 331 extends from the bracket 30 to a direction away from the bracket 30. The connection section 332 is shaped in an open ring, and the connection section 332 is sleeved on the heating tube 21.

In this embodiment, the support assembly 33 is connected to the heating tube 21 through the connection section 332, and the connection section 332 is shaped in an open ring with partial opening. In some embodiments, the heating assembly 20 includes the heating tube 21. In this case, the support assembly 33 can be connected to the heating tube 21 by buckling the connection section 332 on the heating tube 21. The structure is simple, and the installation is easy.

In some embodiments, the heater 100 can include support assemblies 33 sequentially provided along the circumference of the heat dissipation channel 12. Therefore, the heating tube 21 can be fixed and supported more stably, and the overall structural stability can be improved.

As shown in FIG. 3 and FIG. 12, in some embodiments, when the housing assembly 10 includes three or more installation housings 11, the height of the plurality of installation housings 11 will gradually decrease. In this case, to maintain the top flatness of the housing assembly 10 after the housing assembly 10 retracts, a riser 138 will be provided at the installation housing 11 with a small height. The riser 118 protrudes from the bottom of the installation housing 11, to ensure the top flatness of the housing assembly 10 after the housing assembly 10 retracts.

As shown in FIG. 6, in some embodiments of the heater 100 of the present disclosure, the air inlet 112 is provided on the side wall of the installation housing 11 to form a side air inlet 112a.

In this embodiment, the air inlet 112 is provided on the side wall of the installation housing 11 located at the bottom of the housing assembly. In this way, the air inlet 112 will not be blocked to allow an unobstructed air inlet channel for the housing assembly 10, and the heat dissipation efficiency will not be affected.

As shown in FIG. 5, in some embodiments of the heater 100 of the present disclosure, the heater 100 further includes a base plate for covering the bottom of the housing. The base plate is provided with an air inlet 112 communicating with the outside. In this case, the outside cold air will directly enter the heat dissipation channel 12 through the bottom air inlet 112b, and will rise up. The gas flows from bottom towards top of the heat dissipation channel 12.

As shown in FIG. 6, in some embodiments of the heater 100 of the present disclosure, the heater 100 includes side air inlets 112a distributed along at least part of the circumference of the installation housing 11.

In this embodiment, side air inlets 112a are provided on the installation housing 11 located at the bottom of the housing assembly, and the plurality of side air inlets 112a are distributed at intervals along at least part of the circumference of the installation housing 11. In this way, not only the air intake area of the housing can be increased, but also the single air intake volume can be increased to ensure that the air intake volume can meet the heat dissipation efficiency requirements of the heater 100. Thus, the impact on the heat dissipation efficiency of the heater 100 caused by insufficient air intake volume can be avoided.

As shown in FIG. 6, in some embodiments of the heater 100 of the present disclosure, the installation housing 11 is provided with at least two rows of side air inlets 112a along a height direction thereof, and each row of side air inlets 112a includes side air inlets 112a distributed at intervals along the circumference of the installation housing 11. Two adjacent rows of side air inlets 112a are staggered.

In this embodiment, rows of side air inlets 112a are provided at the installation housing 11, and each row of side air inlets 112a includes side air inlets 112a distributed at intervals along the circumference of the installation housing 11 to increase the supply air rate of the heater 100. In addition, any two rows of side air inlets 112a are staggered, which can avoid stress concentration and can enhance the structural strength of the housing.

As shown in FIG. 5, in some embodiments of the heater 100 of the present disclosure, the installation housing 11 is a cylindrical body with two ends communicated with each other. The heat dissipation port 111 is formed at a top opening of the installation housing 11 located at the top of the housing assembly, and an air inlet 112 is formed at a bottom opening of the installation housing 11 located at the bottom of the housing assembly.

In this embodiment, the installation housing 11 is a cylinder structure with two ends communicated with each other. In this way, when the plurality of installation housings 11 are nested with each other successively, the internal spaces of the plurality of installation housings 11 naturally communicate with each other. In addition, the heat dissipation port 111 is formed at the top opening of the installation housing 11 located at the top of the housing assembly, and the bottom air inlet 112b is formed at the bottom opening of the installation housing 11 located at the bottom of the housing assembly. In this way, the structure is simple, and a chimney structure extending along the height direction can be formed, which is conducive to improving the heat dissipation efficiency of the heater 100.

It should be noted that, in this embodiment, the feet 17 can be provided at the bottom of the housing structure to suspend the bottom air inlet 112b. Or the heater 100 can be installed in a hanging manner, or the bottom air inlet 112b can be suspended, to avoid affecting the air intake of the heater 100.

As shown in FIG. 5, in some embodiments of the heater 100 of the present disclosure, the housing assembly 10 further includes a top grid cover 14 for covering the heat dissipation port 111.

In this embodiment, the housing assembly 10 further includes a top grid cover 14 for covering the heat dissipation port 111, which can prevent external debris from entering the heat dissipation channel 12 through the heat dissipation port 111, and can also prevent users from reaching into the heat dissipation channel 12 and being scalded by the heating assembly 20. In addition, by setting the top grid cover 14, the draft direction of the heater 100 can be controlled and the use convenience can be improved. In some embodiments, a handle 16 is provided at the top grid cover 14 to facilitate the user to hold the heater 100.

As shown in FIG. 5, in some embodiments of the heater 100 of the present disclosure, the housing assembly 10 further includes a bottom grid cover 15 for covering the air inlet 112.

In this embodiment, the heater 100 further includes a bottom grid cover 15 for covering the air inlet 112. By setting the bottom grid cover 15, external debris can be prevented from entering the heat dissipation channel 12 through the air inlet 112.

As shown in FIG. 5, in some embodiments of the heater 100 of the present disclosure, the two installation housings 11 nested with each other are defined as a first installation housing and a second installation housing, and the second installation housing is provided inside the first installation housing.

A guiding rail 13 is provided between the first installation housing and the second installation housing. The guiding rail 13 extends along a height direction of the first installation housing, and the second installation housing slides along the guiding rail 13 to pass in and out from a top opening of the first installation housing to the first installation housing.

In this embodiment, any two adjacent installation housings 11 are defined as the first installation housing and the second installation housing. The second installation housing is provided inside the first installation housing, and is slidably connected to the first installation housing through the guiding rail 13. In this case, the second installation housing can pass in and out from the top opening of the first installation housing to the first installation housing along the length direction of the guiding rail 13, to allow the first installation housing and the second installation housing to stretch out and draw back. It can be understood that, the guiding rail 13 can be provided on the inner wall of the first installation housing or the outer wall of the second installation housing. For example, the guiding rail 13 is provided on the inner wall of the first installation housing. In this case, the second installation housing is slidably connected to the guiding rail 13. Or, the guiding rail 13 is provided on the outer wall of the second installation housing to make the guiding rail 13 slidably connected to the first installation housing, and the guiding rail 13 slides up and down along with the second installation housing. By setting the guiding rail 13, the stability for the second installation housing to stretch out and draw back can be improved. In some embodiments, the inner wall of the first installation housing is provided with guiding rails 13, and the plurality of guiding rails 13 are distributed at intervals along the circumference of the first installation housing, to further improve the guiding effect on the second installation housing and improve the stability in the movement process.

In some embodiments, the housing assembly 100 further includes a guiding rail fixing member 137, which is placed at the first installation housing or the second installation housing, and is used for supporting and fixing the guiding rail 13.

As shown in FIG. 5 to FIG. 8, in some embodiments of the heater 100 of the present disclosure, a limiting portion 113 protrudes from the inner edge of the top opening of the first installation housing, and a stopper portion 114 protrudes from a bottom outer wall of the second installation housing. The stopper portion 114 is opposite to the limiting portion 113.

In this embodiment, the limiting portion 113 protrudes from the inner side of the top opening of the first installation housing, and the stopper portion 114 protrudes from a bottom outer wall of the second installation housing. The stopper portion 114 is opposite to the limiting portion 113 along the height direction of the housing assembly 10. In this way, when the second installation housing is extended to the limiting position along the guiding rail 13, the stopper portion 114 abuts against the limiting portion 113 to limit the second installation housing to continue to stretch out. Therefore, it can be avoided that the first installation housing and the second installation housing are separated from each other, to ensure the stability of the overall structure.

In some embodiments, both the stopper portion 114 and the limiting portion 113 are provided around the circumference of the housing assembly 10 to further improve the limiting strength and accuracy.

As shown in FIG. 6 and FIG. 8, in some embodiments of the heater 100 of the present disclosure, a guiding groove 115 is formed at the stopper portion 114, and the guiding rail 13 is placed in the guiding groove 115.

In this embodiment, the guiding rail 13 is provided on the inner wall of the first installation housing, and a guiding groove 115 is provided at the stopper portion 114 of the second installation housing. The guiding rail 13 is provided inside the guiding groove 115, to make the second installation housing slidably connected to the guiding rail 13. In this way, the second installation housing can slide in the guiding rail 13 within a limited range, and the stability of the sliding process can be improved.

In some embodiments of the heater 100 of the present disclosure, the housing assembly 10 further includes a locking and releasing structure provided between the first installation housing and the second installation housing. In this way, when the second installation housing is extended, the second installation housing can be locked to prevent the second installation housing from falling back.

In this embodiment, a locking and releasing structure is provided between the first installation housing and the second installation housing to limit and lock the second installation housing when the second installation housing is extended in place, to maintain the structural stability of the housing assembly when the second installation housing is in the stretched state. The locking and releasing structure may be a magnetic attraction structure, a buckle structure or a screw connection structure, which will not be limited here.

As shown in FIG. 13 to FIG. 17, in some embodiments of the heater 100 of the present disclosure, the locking and releasing structure includes a first elastic protrusion 131 and a clamping hole 116a. The first elastic protrusion 131 and the clamping hole 116a are respectively provided on the guiding rail 13 and the surface opposite to the guiding rail 13.

When the second installation housing is extended in place, the first elastic protrusion 131 is inserted into the clamping hole 116a to lock the second installation housing.

It can be understood that, the first installation housing is slidably connected to the second installation housing through the guiding rail 13, and the guiding rail 13 can be provided on the inner wall of the first installation housing or can be provided on the outer wall of the second installation housing. In this embodiment, the locking and releasing structure is similar to a buckle structure. In one embodiment, the locking and releasing structure includes a first clastic protrusion 131 and a clamping hole 116a. The first elastic protrusion 131 and the clamping hole 116a are respectively provided on the guiding rail 13 and the surface opposite to the guiding rail 13. For example, when the guiding rail 13 is provided on the inner wall of the first installation housing, the outer wall of the second installation housing is opposite to the guiding rail 13. In this case, the first elastic protrusion 131 or the clamping hole 116a can be provided at the guiding rail 13, and the outer wall of the second installation housing is correspondingly provided with the clamping hole 116a or the first elastic protrusion 131. Or when the guiding rail 13 is provided at the outer wall of the second installation housing, the inner wall of the first installation housing is opposite to the guiding rail 13. In this case, the first elastic protrusion 131 or the clamping hole 116a can be provided at the guiding rail 13, and the inner wall of the first installation housing can be correspondingly provided with the clamping hole 116a or the first elastic protrusion 131. When the second installation housing slides along the guiding rail 13, the first clastic protrusion 131 is pressed and retracted until the first elastic protrusion 131 is opposite to the clamping hole 116a. In this case, the first elastic protrusion 131 is no longer pressed and will stretch out to be inserted in the clamping hole 116a. The second installation housing will stretch out in place and then will be locked, to maintain the stability of the housing structure when the second installation housing is in the stretched state.

In some embodiments, when the clamping hole 116a is provided on the surface opposite to the guiding rail 13, to prevent the clamping hole 116a from affecting the airtightness of the heat dissipation channel 12, the clamping portion 116 can be fixed on the inner wall of the first installation housing or the outer wall of the second installation housing for forming a clamping hole 116a. In this way, warm air can be prevented from flowing out from the installation hole on the side wall of the heat dissipation channel 12.

As shown in FIG. 17 and FIG. 18, in some embodiments of the heater 100 of the present disclosure, the locking and releasing structure further includes a second elastic protrusion 132. The second elastic protrusion 132 and the first elastic protrusion 131 are distributed at intervals along the height direction of the guiding rail 13.

When the second installation housing is stored in the first installation housing, the second elastic protrusion 132 is inserted into the clamping hole 116a to lock the second installation housing.

In this embodiment, two elastic protrusions are provided at the guiding rail 13, and the two elastic protrusions are distributed at intervals along the length direction of the guiding rail 13 to respectively form the first elastic protrusion 131 and the second elastic protrusion 132, respectively corresponding to the stretched state and the retracted state of the second installation housing. When the second installation housing is retracted, the second elastic protrusion 132 is inserted in the clamping hole 116a to limit the second installation housing and maintain the stable housing structure in the storage state.

As shown in FIG. 19 to FIG. 25, in some embodiments of the heater 100 of the present disclosure, the locking and releasing structure includes an elastic arm 133 provided on the surface of the guiding rail 13, and the elastic arm 133 extends from bottom to top.

When the second installation housing is extended in place, the free end of the elastic arm 133 supports the second installation housing to prevent the second installation housing from falling back.

In this embodiment, the locking and releasing structure includes an elastic arm 133 provided on the surface of the guiding rail 13 facing the second installation housing, and the free end of the elastic arm 133 extends upwards. When the second installation housing slides along the guiding rail 13, the elastic arm 133 is pressed and will move closer to one side of the guiding rail 13. When the stopper portion 114 passes the elastic cantilever, since the elastic arm 133 is no longer under pressure, the elastic arm 133 will pop out towards a side of the second installation housing to abut against and support the stopper portion 114. In this way, the second installation housing can be prevented from retracting downwards, and the stability of the stretched state of the housing assembly 10 can be maintained.

As shown in FIG. 24, in some embodiments of the heater 100 of the present disclosure, a limiting protrusion 133a protrudes from the free end of the elastic arm 133 towards the second installation housing, and the guiding slope 133b is formed at the lower surface of the limiting protrusion 133a.

When stretching out, the second installation housing will move along the guiding slope 133b to retract the elastic arm 133 until the second installation housing passes the elastic arm 133 and is supported by the free end of the elastic arm 133.

In this embodiment, the limiting protrusion 133a protrudes from the free end of the elastic cantilever towards the side of the second installation housing, and a guiding slope 133b is formed at the lower surface of the limiting protrusion 133a. In this way, when the second installation housing rises, the stopper portion 114 can abut against the guiding slope 133b and move along the guiding slope 133b, to press the elastic cantilever to one side of the guiding rail 13. In this case, the stopper portion 114 can pass through the elastic cantilever, and the smoothness of the stretched process of the second installation housing can be improved, to improve the user convenience.

In some embodiments, the lower end of the guiding rail 13 is provided with a support arm 138, and a support protrusion protrudes from the support arm 138 towards the second installation housing. When the housing assembly 10 is in the retracted state, the second installation housing is supported by the support protrusion.

As shown in FIG. 6 to FIG. 10, in some embodiments of the heater 100 of the present disclosure, the locking and releasing structure is a support pad 134 provided at the top of the guiding rail 13, and the second installation housing can rotate relative to the first installation housing.

When the second installation housing is extended in place, the second installation housing will rotate relative to the first installation housing, to enable the stopper portion 114 outside the guiding groove 115 to be supported by the support pad 134.

In this embodiment, the second installation housing can rotate relative to the first installation housing. In this way, when the second installation housing slides along the guiding rail 13 and is extended, the stopper portion 114 will pass the support pad 134 at the top of the guiding rail 13. In this case, the second installation housing will rotate to make the stopper portion 114 supported by the support pad 134. Therefore, the second installation housing can be prevented from retracting downwards, and the stability of the stretched state of the housing assembly 10 can be maintained.

As shown in FIG. 10 and FIG. 11, in some embodiments of the heater 100 of the present disclosure, a limiting groove 134a is formed at the surface of the support pad 134 away from the guiding rail 13, and a positioning portion 117a protrudes from the lower surface of the stopper portion 114.

When the stopper portion 114 is supported by the support pad 134, the positioning portion 117a is placed in the limiting groove 134a.

In this embodiment, a limiting groove 134a is formed at the surface of the cushion section away from the guiding rail 13, and a positioning portion 117a protrudes from the lower surface of the stopper portion 114. By setting the limiting groove 134a and the positioning portion 117a, the stopper portion 114 can be limited when the stopper portion 114 is supported by the support pad 134. In an embodiment, when the support portion is supported by the support pad 134, the positioning portion 117a is clamped in the limiting groove 134a, to prevent the stopper portion 114 from sliding from the support pad 134. In this way, the positional stability of the second installation housing in the stretched state can be ensured, and the structural stability of the housing assembly 10 can be maintained.

As shown in FIG. 10, in some embodiments of the heater 100 of the present disclosure, a blocking portion 134b protrudes from the surface of the support pad 134 away from the guiding rail 13, to limit the rotation angle of the second installation housing.

In this embodiment, the blocking portion 134b protrudes from the surface of the support pad 134 away from the connection section 332, and the blocking portion 134b is located at one side surface of the support pad 134. In some embodiments, the second installation housing can rotate relative to the first installation housing, and when the second installation housing is extended in place, the second installation housing can rotate to enable the stopper portion 114 on the edge of the guiding groove 115 to be support by the top of the guiding rail 13, to prevent the second installation housing from falling back. In this embodiment, when the second installation housing is extended in place, the stopper portion 114 is supported by the support pad 134. By setting the stopper portion 134b, the second installation housing can be limited when the second installation housing rotates, and the stopper portion 114 is accurately supported by the support pad 134 to support the second installation housing.

As shown in FIG. 8 and FIG. 9, in some embodiments of the heater 100 of the present disclosure, the housing assembly 10 further includes a protective pad 117 for covering the edge of the guiding groove 115.

In this embodiment, the edge of the guiding groove 115 of the stopper portion 114 is covered with a protective pad 117, and the protective pad 117 is usually made of elastic cushion materials. The guiding rail 13 is placed in the guiding groove 115, which can avoid mutual wear caused by the direct contact between the guiding rail 13 and the guiding groove 115. The protective pad 117 can play a protective and cushion role in reducing wear and improving the stability of the stretched and retracted process, to ensure the service life of the guiding rail 13.

As shown in FIG. 16, in some embodiments of the heater 100 of the present disclosure, the housing assembly 10 further includes a guiding rail cushion pad 135 provided at the end of the guiding rail 13.

In this embodiment, the housing assembly 10 further includes a guiding rail cushion pad 135 provided at the end of the guiding rail 13. It can be understood that, when the second installation housing slides relative to the first installation housing, the friction and impact will inevitably exist between the second installation housing and the first installation housing, and the force between the first installation housing and the second installation housing will be transmitted to the guiding rail 13. By setting the guiding rail cushion pad 135, external force on the guiding rail 13 can be cushioned. In this way, the guiding rail 13 can be prevented from being loosened or damaged, and the use safety can be improved.

As shown in FIG. 16, in some embodiments of the heater 100 of the present disclosure, an insertion hole protrudes from the end of the guiding rail 13, and an insertion portion 135a protrudes from a side of the guiding rail cushion pad 135 towards the guiding rail 13. The insertion portion 135a is inserted into the insertion hole.

In this embodiment, the guiding rail cushion pad 135 includes a cushion portion and an insertion portion 135a, and the end of the guiding rail 13 is provided with an insertion hole. In addition, the insertion portion 135a is inserted in the insertion hole, and the cushion portion covers the insertion hole and the end face of the guiding rail 13. In this way, when the guiding rail 13 is under stress, the cushion portion can provide cushion to prevent the guiding rail 13 from being damaged or loosened. The guiding rail cushion pad 135 is connected to the guiding rail 13 by a plug-in manner, which can not only improve the connection strength between the guiding rail cushion pad 135 and the guiding rail 13, but also can prevent the guiding rail cushion pad 135 from falling off from the guiding rail 13.

As shown in FIG. 15 to FIG. 18, in some embodiments of the heater 100 of the present disclosure, the insertion portion 135a is provided with a hook 135b, and the hole wall of the insertion hole is provided with a clamping port 136. The hook 135b is hooked in the clamping port 136.

In this embodiment, the connection section 332 is provided with a hook 135b. When the insertion portion 135a is inserted into the insertion hole, the hook 135b is hooked in the clamping port 136 to prevent the insertion portion 135a from falling off from the insertion hole. In this way, the comfort level of the guiding rail cushion pad 135 can be improved, and the overall structural stability can be improved.

As shown in FIG. 18, in some embodiments of the heater 100 of the present disclosure, the insertion portion 135a is provided with two hooks 135b placed in a back-to-back manner. The opposite sidewalls of the insertion hole are provided with the clamping port 136, and each hook 135b is hooked in one of the clamping port 136.

In this embodiment, the aforementioned insertion portion 135a is formed by two hooks 135b placed in the back-to-back manner, and each hook 135b is hooked in a clamping port 136 on the hole wall of the insertion hole. In this way, the connection strength between the insertion portion 135a and the guiding rail 13 can be further improved.

When the insertion portion 135a shakes in the insertion hole, since the orientations of two hooks 135b are opposite, there will always be only one of the hooks 135b breaking away from the clamping port 136, and there will not be two hooks 135b breaking away from the clamping port 136 and causing the insertion portion 135a breaking away from the insertion hole, which improves the connection stability.

As shown in FIG. 27 to FIG. 28, in some embodiments of the heater 100 of the present disclosure, the heater 100 is further provided with a control switch 50 provided at the outer wall of the installation housing 11 located at the bottom of the housing assembly.

In this way, the control switch 50 will not be covered no matter whether the heater 100 is in the storage state or in the stretched state, and the control switch 50 will not be repeatedly moved to cause the internal circuit to be involved.

In some embodiments, the inner wall of the installation housing 11 is provided with a wire fixer 119, which is used to fix the internal circuit of the heater 100, such as the connection wire of the heating assembly 20, the connection wire of the control switch 50, and prevent the connection wire from being involved and damaged in the retracted process of the housing assembly 10.

As shown in FIG. 26, in some embodiments of the heater 100 of the present disclosure, the heater 100 further includes an air supply assembly 40 provided inside the installation housing 11 located at the bottom of the housing assembly. In this case, the hot air in the heat dissipation 12 can be blown out from the heat dissipation port 111, and the outside air can enter the heat dissipation channel 12 from the air inlet 112 for gas circulation.

In this embodiment, the heater 100 further includes an air supply assembly 40 provided in the housing assembly 10. By setting the air supply assembly 40, the gas circulation speed between the heat dissipation channel 12 and the external circumstances can be accelerated, and the heat dissipation efficiency of the heater 100 can be improved. In addition, in some embodiments, the air supply assembly 40 is provided under the heating assembly 20, and is isolated from each other by the bracket 30. In this way, the heat exchange efficiency between the heating assembly 20 and the air can be improved, and the air supply assembly 40 can be prevented from being always in the hot air circumstances to cause damage to the air supply assembly 40, to ensure the service life and performance stability of the air supply assembly 40.

The above-mentioned embodiments are only some embodiments of the present disclosure, and are not intended to limit the scope of the present disclosure. Any equivalent structure conversion made with reference to the description and the accompanying drawings of the present disclosure, directly or indirectly applied in other related fields, should all fall in the scope of the present disclosure.

Claims

1. A heater, comprising: a housing assembly comprising at least two installation housings nested with each other to make the housing assembly retractable, wherein when the housing assembly is extended, interiors of the housing assemblies communicate with each other to form a heat dissipation channel, the installation housing located at a bottom of the housing assembly is provided with an air inlet, and the installation housing located at a top of the housing assembly is provided with a heat dissipation port; anda heating assembly provided inside the heat dissipation channel.

2. The heater of claim 1, wherein the heating assembly is provided around a circumference of the heat dissipation channel.

3. The heater of claim 2, wherein the heating assembly is a heating wire provided around the circumference of the heat dissipation channel.

4. The heater of claim 2, wherein the heating assembly comprises a heating tube provided around the circumference of the heat dissipation channel.

5. The heater of claim 4, wherein the heating assembly further comprises a plurality of heat dissipation plates sequentially sleeved on the heating tube along the circumference of the heat dissipation channel.

6. The heater of claim 5, wherein a surface of the heat dissipation plate is parallel to a length direction of the heat dissipation channel.

7. The heater of claim 1, wherein: the heater further comprises a bracket, the bracket is horizontally provided inside the installation housing located at the bottom of the housing assembly to divide an inner space of the housing assembly into a heat dissipation channel and an air intake space distributed up and down, and the bracket is provided with a ventilation hole communicating with the air intake space and the heat dissipation channel; andthe air inlet communicates with the air intake space, and the heating assembly is provided inside the heat dissipation channel.

8. The heater of claim 7, wherein the bracket is provided with a support assembly extending upwards along a height direction of the housing assembly, and the heating assembly is supported by the support assembly.

9. The heater of claim 1, wherein: the air inlet is provided on a side wall of the installation housing to form a side air inlet; andthe heater comprises a plurality of side air inlets distributed at intervals along a circumference of the installation housing.

10. The heater of claim 9, wherein the installation housing is provided with at least two rows of side air inlets along a height direction of the installation housing, each row of side air inlets comprises the plurality of side air inlets distributed at intervals along the circumference of the installation housing, and two adjacent rows of side air inlets are staggered.

11. The heater of claim 1, wherein the installation housing is a cylindrical body with two ends communicated with each other, the heat dissipation port is formed at a top opening of the installation housing located at the top of the housing assembly, and the air inlet is formed at a bottom opening of the installation housing located at the bottom of the housing assembly, wherein: the housing assembly further comprises a top grid cover for covering the heat dissipation port; and/orthe housing assembly further comprises a bottom grid cover for covering the air inlet.

12. The heater of claim 1, wherein: the two installation housings nested with each other are respectively a first installation housing and a second installation housing, and the second installation housing is provided inside the first installation housing; anda guiding rail is provided between the first installation housing and the second installation housing, the guiding rail extends along a height direction of the first installation housing, and the second installation housing slides along the guiding rail to pass in and out from the top opening of the first installation housing to the first installation housing.

13. The heater of claim 12, wherein a limiting portion protrudes from a top inner wall of the first installation housing, a stopper portion protrudes from a bottom outer wall of the second installation housing, and the stopper portion is opposite to the limiting portion, wherein a guiding groove is formed at the stopper portion, and the guiding rail is provided inside the guiding groove,wherein the housing assembly further comprises a locking and releasing structure provided between the first installation housing and the second installation housing to lock the second installation housing and prevent the second installation housing from falling back when the second installation housing is extended, wherein:the locking and releasing structure is a support pad provided at a top of the guiding rail, and the second installation housing is configured to rotate relative to the first installation housing; andwhen the second installation housing is extended in place, the second installation housing rotates relative to the first installation housing to allow the support pad to support the stopper portion outside the guiding groove, wherein:a surface of the support pad away from the guiding rail is provided with a limiting groove, and a positioning portion protrudes from a lower surface of the stopper portion;when the stopper portion is supported by the support pad, the positioning portion is provided in the limiting groove; and/ora blocking portion protrudes from the surface of the support pad away from the guiding rail to limit a rotation angle of the second installation housing.

14. The heater of claim 13, wherein: the locking and releasing structure comprises a first elastic protrusion and a clamping hole;the first elastic protrusion and the clamping hole are respectively provided at the guiding rail and a surface opposite to the guiding rail; andwhen the second installation housing is extended in place, the first elastic protrusion is inserted into the clamping hole to lock the second installation housing, wherein:the locking and releasing structure further comprises a second elastic protrusion, the second elastic protrusion and the first elastic protrusion are distributed at intervals along a height direction of the guiding rail; andwhen the second installation housing is stored in the first installation housing, the second elastic protrusion is inserted into the clamping hole to lock the second installation housing.

15. The heater of claim 13, wherein: the locking and releasing structure comprises an elastic arm provided at a surface of the guiding rail, and the elastic arm extends upward along a vertical direction; andwhen the second installation housing is extended in place, a free end of the elastic arm supports the second installation housing to prevent the second installation housing from falling back.

16. The heater of claim 14, wherein: a limiting protrusion protrudes from a free end of an elastic arm towards the second installation housing, a guiding slope is formed at a lower surface of the limiting protrusion; andwhen the second installation housing is extended, the second installation housing moves along the guiding slope to make the elastic arm retract until the second installation housing passes the elastic arm and is supported by the free end of the elastic arm.

17. The heater of claim 13, wherein the housing assembly further comprises a protective pad for covering an edge of the guiding groove.

18. The heater of claim 13, wherein the housing assembly further comprises a guiding rail cushion pad provided at an end of the guiding rail.

19. The heater of claim 18, wherein an insertion hole protrudes from the end of the guiding rail, an insertion portion protrudes from a side of the guiding rail cushion pad towards the guiding rail, and the insertion portion is inserted into the insertion hole, wherein the insertion portion is provided with a hook, a clamping port is formed at a hole wall of the insertion hole, and the hook is hooked in the clamping port.

20. The heater of claim 1, wherein: the heater is further provided with a control switch provided on an outer wall of the installation housing located at the bottom of the housing assembly and is electrically connected to the heater assembly; and/orthe heater further comprises an air supply assembly provided inside the installation housing located at the bottom of the housing assembly, to make hot air in the heat dissipation channel blown out from the heat dissipation port, and allow outside air to enter the heat dissipation channel from the air inlet for gas circulation.