Patent Application
20250129731
The present utility model relates to the technical field of a gas exhausting equipment, in particular to a gas exhausting device and a gas water heater.
During the use of a gas water heater, air can be input into a burning structure through a gas inlet structure of the gas water heater, and the waste gas generated by burning will be exhausted through an exhaust structure. When a rich lean burning system is employed in a gas water heater, an optimal ignition and flame spreading interval of a gas burner will be narrow. In the process of air intake using a fan, especially when the speed of the fan exceeds or is lower than the optimal ignition and flame spreading interval of the gas water heater, the problem of screech resonance is prone to be produced when the waste gas is exhausted through the exhaust structure, resulting in the noise problems that reduce the user's experience.
Therefore, how to expand the ignition and flame spreading interval of the gas water heater to reduce the occurrence of the screech resonance problem has become an urgent technical problem to be solved at present.
To overcome the above-mentioned deficiency of the prior art, the technical problem to be solved by the embodiments of the present utility model is to provide a gas exhausting device and a gas water heater for expanding the ignition and flame spreading interval of the gas burner to reduce the occurrence of the screech resonance problem.
This object of the present utility model can be realized by adopting the following technical solutions. The present utility model provides a gas exhausting device, comprising:
In a preferred embodiment of the present utility model, the buffer structure includes an elastic element, and the elastic element forms the buffer cavity.
In a preferred embodiment of the present utility model, the gas exhausting device further comprises a mounting structure, the mounting structure is provided on the exhaust structure, and the buffer structure is in connected to the exhaust structure in a sealed manner by means of the mounting structure.
In a preferred embodiment of the present utility model, the mounting structure includes a mounting seat, the mounting seat is provided at a periphery of the communication port, and the elastic element is connected to the mounting seat.
In a preferred embodiment of the present utility model, the buffer structure further includes a cover body, the cover body is disposed on the elastic element in a covering manner, the cover body is connected to the mounting seat, and the cover body is provided to be spaced apart from at least part of the elastic element to form an adjustment gap.
In a preferred embodiment of the present utility model, the cover body presses the elastic element onto the mounting seat to form a sealed structure.
In a preferred embodiment of the present utility model, the cover body is detachably connected to the elastic element.
In a preferred embodiment of the present utility model, the elastic element is constructed into a sleeve shape, a side edge of the elastic element is provided with a first pressed edge, and the first pressed edge is provided with a protrusion;
In a preferred embodiment of the present utility model, the cover body is provided with at least one vent hole, and the vent hole connects the adjustment gap and external air.
In a preferred embodiment of the present utility model, the number of communication ports is one or more, and a ratio of a total area of the communication port(s) to a cross-sectional area of the exhaust structure is greater than a predetermined value.
In a preferred embodiment of the present utility model, the predetermined value is 1/54.
In a preferred embodiment of the present utility model, the exhaust structure further includes an exhaust seat and a connecting tube, the exhaust channel penetrates through the exhaust seat and the connecting tube, the exhaust port is located at a tail end of the connecting tube in a radial direction, and the communication port is provided on a side wall of the connecting tube.
In a preferred embodiment of the present utility model, the elastic element includes a rubber film.
The present utility model also provides a gas water heater comprising a burner and the gas exhausting device described above, the gas exhausting device being provided on an outer shell of the gas water heater for expelling flue gas generated the burning in the burner.
The technical solutions of the present utility model have the following significantly advantageous effect:
In the use of the gas exhausting device according to the present utility model, the exhaust channel of the exhaust structure is connected to the flue gas channel of the gas water heater, so that the waste gas generated by the burning in the gas water heater can be discharged through the exhaust port of the exhaust structure. By providing the buffer structure on the exhaust structure, the buffer structure can be connected to the exhaust structure in a sealed manner through the communication port, so that the buffer cavity of the buffer structure is in communication with the exhaust channel. When the exhaust structure discharges the waste gas, the vibration of the waste gas will be transmitted to the exhaust structure through the exhaust channel, but the buffer cavity can absorb the vibration frequency and intensity of the waste gas by deformation to prevent the transmission of the waste gas vibration to the exhaust structure to cause the problem of screech resonance, and therefore, the use experience of the user is improved. In addition, due to the vibration damping effect of the buffer structure, the range of the ignition and flame spreading interval is expanded, so that the problem of screech resonance would not occur in the exhaust structure even if the fan is at a large speed of rotation, and accordingly, the debugging difficulty of the gas water heater is reduced, and the reliability of the gas water heater is improved.
In order to explain more clearly the technical solutions in the embodiments of the present utility model, the figures needed in the description of the embodiments will be introduced briefly. Obviously, the figures described below are only some embodiments of the present utility model, and for an ordinary person skilled in the art, other figures may also be obtained based on these figures without paying creative effort.
The figures described herein are for explanation purposes only and are not intended to limit the scope of disclosure contained in the present utility model in any way. Besides, the shapes, proportions and sizes of the parts in the figures are only schematic to help understanding the present utility model, and are not provided to specifically limit the shapes, proportions and sizes of the parts in the present utility model. A person skilled in the art, under the teaching of the present utility model, may select various possible shapes, proportions and sizes according to the specific situations to implement the present utility model.
Clear and comprehensive descriptions of the technical solutions in the embodiments of the present utility model will be given below in combination with the figures in the embodiments of the present utility model. Obviously, the embodiments described herein are only part of, rather than all of, the embodiments of the present utility model. Based on the embodiments in the present utility model, all other examples obtained by an ordinary person skilled in the art without paying creative effort should fall within the scope of protection of the present utility model.
Please refer to
Overall, when the gas exhausting device is in use, the exhaust channel 11 of the exhaust structure 1 is connected to a flue gas channel of a gas water heater 7, so that the waste gas generated by combustion in the gas water heater 7 can be discharged through the exhaust port of the exhaust structure 1.
By providing the buffer structure 3 on the exhaust structure 1, the buffer structure 3 can be connected to the exhaust structure 1 in a sealed manner through the communication port 4, so that the buffer cavity 31 of the buffer structure 3 is in communication with the exhaust channel 11. When the exhaust structure 1 discharges the waste gas, the vibration of the waste gas will be transmitted to the exhaust structure 1 through the exhaust channel 11, but the buffer cavity 31 can absorb the vibration frequency and intensity of the waste gas by deformation thereby preventing transmission of the waste gas vibration to the exhaust structure 1 to cause the problem of screech resonance, and therefore, the use experience of the user is improved.
Furthermore, due to the vibration damping effect of the buffer structure 3, the range of the ignition and flame spreading interval is expanded, so that the problem of screech resonance would not occur in the exhaust structure 1 even when the fan is at a large speed of rotation, and accordingly, the debugging difficulty of the gas water heater 7 is reduced, and the reliability of the gas water heater 7 is improved.
In the embodiments of the present utility model, such as the embodiments shown in
By providing the buffer cavity 31 in the elastic element 32, the buffer cavity 31 can be deformed under the action of air pressure, and thus the vibration of the waste gas can be absorbed by the deformation of the buffer cavity 31, so that the risk of occurrence of screech resonance in the exhaust structure 1 is reduced.
In a specific embodiment, the elastic element 32 is formed of an elastic material, and the buffer cavity 31 can be formed in the elastic element 32. A designer may adjust the specific material, e.g., a rubber material, of the elastic element 32 according to the use requirement, and no specific limitation will be given here.
In the embodiments of the present utility model, the gas exhausting device further comprises a mounting structure 2, the mounting structure 2 is provided on the exhaust structure 1, and the buffer structure 3 is connected to the exhaust structure 1 in a sealed manner by means of the mounting structure 2.
By providing the mounting structure 2 on the exhaust structure 1, the buffer structure 3 can be quickly connected to the exhaust structure 1 in a sealed manner by means of the mounting structure 2, and the buffer cavity 31 of the buffer structure 3 is in communication with the exhaust channel 11.
In a feasible embodiment of the present utility model, such as the embodiments shown in
By providing the mounting seat 21 on a side wall of the exhaust structure 1, it facilitates to directly mount the buffer structure 3 on the exhaust structure 1, which produces better mounting efficiency. The designer may adjust the specific construction of the mounting seat 21 according to the use requirement, and no specific limitation will be given here.
In the embodiments of the present utility model, such as the embodiments shown in
With the adjustment gap, the cover body 6 is prevented from restricting the amount of deformation of the elastic element 32. When the exhaust structure 1 discharges the waste gas, the elastic element 32 can compress air in the adjustment gas to produce deformation, so that the elastic element 32 can absorb the vibration frequency and intensity of the waste gas through deformation to prevent the problem of screech resonance
In a specific embodiment, the cover body 6 presses the elastic element 32 onto the mounting seat 21 to form a sealed structure. By providing the cover body 6 on the elastic element 32 in a covering manner, on the one hand, the cover body 6 can protect the elastic element 32 to reduce the risk of the elastic element 32 being damaged by external force, and on the other hand, the cover body 6 is connected to the mounting seat 21 in a sealed manner so that the cover body 6 can exert a sealing function, so even if the elastic element 32 is damaged, the waste gas would not leak, and therefore the use safety is improved.
Further, the cover body 6 is detachably connected to the elastic element 32. The detachable connection between the cover body 6 and the elastic element 32 facilitates the positioning and installation, as well as detachment and replacement, of the elastic element 32, and therefore, the positioning effect and replacement efficiency are improved.
In the embodiments of the present utility model, the elastic element 32 is constructed into a sleeve shape, a side edge of the elastic element 32 is provided with a first pressed edge 321, and the first pressed edge 321 is provided with a protrusion 322.
To be specific, the cover body 6 is provided in a radial direction of the exhaust channel 11 and is disposed on the elastic element 32 in a covering manner. Of course, the designer may adjust the specific construction and setting of the cover body 6 according to the use requirement, and no specific limitation will be given here.
Further, the cover body 6 is constructed into a sleeve shape, a side edge of the cover body 6 is provided with a second pressed edge 61, the second pressed edge 61 is provided with a groove 62, the protrusion 322 can be engaged in the groove 62, the second pressed edge 61 can press the first pressed edge 321 onto the mounting seat 21 to form a sealed structure, and the second pressed edge 61 is detachably connected to the mounting seat 21.
The protrusion 322 is annularly provided on the first pressed edge 321 and is provided on an end surface of a side of the first pressed edge 321 facing away from the mounting seat 21. The groove 62 is annularly provided on the second pressed edge 61 and is provided on an end surface of a side of the second pressed edge 61 facing the mounting seat 21.
By engaging the protrusion 322 in the groove 62, the positioning and installation operations of the elastic element 32 and the cover body 6 are realized. In addition, the engagement of the protrusion 322 with the groove 62 also produces a sealing effect that prevents the waste gas from leaking along a gap between the protrusion 322 and the groove 62 after the elastic element 32 is damaged.
Further, the second pressed edge 61 is provided with a plurality of bolt holes to form a flange structure, the mounting seat 21 is also correspondingly provided with a plurality of bolt holes, and the second pressed edge 61 and the mounting seat 21 can be connected by means of bolts, which produces higher mounting efficiency.
In addition, by using the second pressed edge 61, the first pressed edge 321 can also be pressed onto the mounting seat 21 to exert a sealing effect, which can prevent the waste gas from leaking along a gap between the first pressed edge 321 and the mounting seat 21.
Of course, in other specific embodiments, the designer may adjust the connection manner between the second pressed edge 61 and the mounting seat 21 according to the use requirement, for example, the second pressed edge 61 may engage with the mounting seat 21 by an engaging structure, and no specific limitation will be given here.
In the embodiments of the present utility model, such as the embodiments shown in
By providing the vent hole 63 on the cover body 6, the adjustment gap and the external space can be communicated through the vent hole, thereby reducing the resistance of deformation of the elastic element 32.
The designer may adjust the set number and position of the vent hole 63 according to the use requirement, and no specific limitation will be given here. Preferably, a plurality of vent holes 63 are provided, and the plurality of vent holes 63 are disposed at the other end of the cover body 6 with respect to the second pressed edge 61.
In a feasible embodiment of the present utility model, the number of communication port is one, and a ratio of a total area of the communication port 4 to a cross-sectional area of the exhaust structure 1 is greater than a predetermined value.
By controlling a ratio of a total area of the communication port 4 to a cross-sectional area of a first gas channel of the exhaust structure 1, it is convenient to control the flow capacity of the communication port 4 and thus adjust the buffer ability of the buffer cavity 31 to enable the buffer cavity 31 to better absorb the vibration of the waste gas, thereby preventing the occurrence of the screech resonance problem in the exhaust structure 1 under the influence of the waste gas.
In another feasible embodiment of the present utility model, there is a plurality of communication ports 4, and a ratio of a total area of the communication ports 4 to a cross-sectional area of the exhaust structure 1 is greater than a predetermined value, wherein “a plurality of” means a number of two or more.
In a specific embodiment, the plurality of communication ports 4 are of the same size and are arranged at intervals. By controlling a ratio of a total area of the communication ports 4 to a cross-sectional area of a first gas channel of the exhaust structure 1, it is convenient to control the flow capacity of each communication port 4 and thus adjust the buffer ability of the buffer cavity 31.
In another specific embodiment, at least one of the communication ports 4 is of a different size than the other ones.
The designer may adjust the size, the set number and the arranged position of the communication ports 4 according to the use requirement, and no specific limitation will be given here.
Preferably, the predetermined value is 1/54. By adopting a ratio of a total area of the communication ports 4 to a cross-sectional area of a first gas channel of the exhaust structure 1 that is greater than 1/54, the flow capacity of the communication ports 4 is ensured, and the buffer cavity 31 can better absorb the vibration of the waste gas.
Of course, in other specific embodiments, the designer may adjust the predetermined value according to the use requirement, and no specific limitation on the value will be given here.
In the embodiments of the present utility model, the exhaust structure 1 further includes an exhaust seat 51 and a connecting tube 5, the exhaust channel 11 penetrates through the exhaust seat 51 and the connecting tube 5, the exhaust port is located at a tail end of the connecting tube 5 in a radial direction, and the communication port 4 is provided on a side wall of the connecting tube 5.
In a specific embodiment, the exhaust seat 51 is connected to an end of the connecting tube 5, the connecting tube 5 is connected to the exhaust structure 1 by means of the exhaust seat 51, such that the exhaust channel 11 penetrates through the exhaust seat 51 and the connecting tube 5.
An externally attached structure can be formed by using the exhaust seat 51 and the connecting tube 5. The use of the external connecting tube 5 as the installation basis of the buffer structure 3 avoids destroying the integrity of the exhaust structure 1 and facilitates the retrofitting of the existing exhaust structure 1, and thus has better applicability.
In addition, providing the mounting seat 21 on a side wall of the connecting tube 5 facilitates fast installation of the buffer structure 3 on the connecting tube 5, and thus produces higher installation efficiency.
Further, the connecting tube 5 is detachably connected to the exhaust structure 1 by means of the exhaust seat 5. The detachable connection between the connecting tube 5 and the exhaust structure 1 facilitates the installation and detachment of the connecting tube 5, thereby improving the installation and maintenance efficiency.
In the embodiments of the present utility model, such as the embodiments shown in
When the exhaust structure 1 discharges waste gas, the rubber film will unfold under the influence of the pressure of the waste gas to form a sleeve shape. When the exhaust structure 1 does not discharge waste gas, the rubber film will contract by its own elasticity to form a corrugated plate shape, and the rubber film in the corrugated plate shape has better deformation ability.
By adopting a rubber material, the rubber film has good deformation ability and therefore can sufficiently absorb the vibration of the waste gas to prevent the occurrence of the screech resonance problem in the exhaust structure 1.
Of course, the designer may also use other materials to form the elastic element 32, such as plastic materials, etc., and no specific limitation will be given here.
In other feasible embodiments, the rubber film may also be made directly into a sleeve shape, and no specific limitation will be given here.
The designer may adjust the way of installation between the exhaust seat 51 and the exhaust structure 1 according to the use requirement. For example, the exhaust seat 51 may be connected with the exhaust structure 1 by thread, or the exhaust seat 51 may detachably engage with the exhaust structure 1 by an engaging structure, and no specific limitation will be given here.
Of course, in other embodiments, the exhaust seat 51 and the exhaust structure 1 may be fixedly connected. For example, the exhaust seat 51 and the exhaust structure 1 may be connected by welding, or the exhaust seat 51 and the exhaust structure 1 may be bonded by glue, and no specific limitation will be given here.
Please refer to
The specific structure, working principle and advantageous effect of the gas exhausting device are the same as those described in Embodiment 1, and will not be described redundantly here. By using the gas exhausting device in Embodiment 1 in the gas water heater 7, when the exhaust structure 1 discharges waste gas, the vibration frequency and intensity of the waste gas can be absorbed by the buffer cavity 31 so that the vibration of the waste gas is prevented from being transmitted to the exhaust structure 1 to cause the problem of screech resonance, and in this way, the problem of screech resonance would not occur in the exhaust structure 1 even if the fan is at a larger or a smaller speed of rotation, and accordingly, the ignition and flame spreading interval is enlarged, the debugging difficulty of the gas water heater 7 is reduced, and the reliability of the gas water heater 7 is improved.
For example, when the initial optimal ignition and flame spreading interval of the gas water heater 7 is in the range from 3400r/min to 3800r/min, the optimal ignition and flame spreading interval of the gas water heater 7 can be adjusted to the range from 3000r/min to 4000r/min by using the gas exhausting device. In this way, the ignition and flame spreading interval of the gas water heater 7 is enlarged, so the debugging difficulty of the gas water heater 7 is reduced, the occurrence of the screech resonance problem is reduced, and the reliability of the gas water heater 7 is improved.
The disclosures of all articles and references, including patent applications and publications, are incorporated therein by reference for all purposes. The term “substantially consists of . . . ” which describes a combination should include the determined elements, components, parts or steps, as well as other elements, components, parts or steps that in substance do not affect the basic novel features of the combination. The use of the terms “contain/containing” or “comprise/comprising” to describe the combination of the elements, components, parts or steps therein also take into account the embodiments substantially constructed by these elements, components, parts or steps. Here, by using the term “can/may”, it is intended to explain that any described attribute that “can/may” be included is selectable. Multiple elements, components, parts or steps can be provided by a single integral element, component, part or step. Alternatively, a single integral element, component, part or step can be divided into a plurality of separated elements, components, parts or steps. The terms “a” or “one” used to describe the elements, components, parts or steps are not intended to exclude other elements, components, parts or steps.
The embodiments in this Description are described in a progressive manner, the emphasis of each embodiment is explained, which is different from that of the other embodiments, and reference can be made to each other for the identical or similar parts of the embodiments. The above embodiments are intended only for explaining the technical conception and features of the present utility model, with the purpose of enabling the persons who are familiar with this technology to comprehend and implement the content of the utility model, and thus cannot limit the scope of protection of the present utility model. Any equivalent variation or modification made in accordance with the spirit and substance of the present utility model should be within the scope of protection of the present utility model.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202322851526.8 | Oct 2023 | CN | national |
