The present disclosure relates to an electrostatic precipitator, an indoor unit, and an air conditioner.
For example, Patent Document 1 discloses an air conditioner including a wall-mounted type indoor unit provided with an electrostatic precipitator. In Patent Document 1, a dust collection unit attachment frame for attaching a dust collection unit thereto is fixed on a front air passage of the indoor unit, and the electrostatic precipitator is detachably attached to the dust collection unit attachment frame.
The electrostatic precipitator includes a filter, and the filter needs to be cleaned. In the case of the wall-mounted type indoor unit of Patent Document 1, since an intake air passage is located in front of the indoor unit, the electrostatic precipitator is locked to the front surface of the indoor unit. Therefore, the electrostatic precipitator is stably supported and hardly fall during maintenance of the electrostatic precipitator such as filter cleaning. On the other hand, in the case of a ceiling-embedded type indoor unit, since the intake air passage is located on the lower surface of the indoor unit, the electrostatic precipitator disposed on the intake air passage is also provided on the lower surface of the indoor unit. Therefore, since the components of the electrostatic precipitator are more likely to fall off compared to the wall-mounted type indoor unit during installation or maintenance of the electrostatic precipitator, there was a problem in terms of attachment and detachment workability.
The present disclosure has been made in view of the above-described circumstances and an object thereof is to provide an electrostatic precipitator having a structure capable of improving the workability of attaching and detaching a device body to and from an indoor unit, an indoor unit including such an electrostatic precipitator, and an air conditioner including such an indoor unit.
An aspect of an electrostatic precipitator of the present disclosure is an electrostatic precipitator provided in an indoor unit of an air conditioner, including: a casing attached to a housing of the indoor unit; a fixing member attached to the casing; a supporter attached to the fixing member; a device body supported by the supporter and is detachably attached to the supporter; and a hook member supporting the device body, wherein the device body includes a handle protruding in a first direction and a pair of protrusions protruding from both end side surfaces of the delivery body in a second direction orthogonal to the first direction, the supporter includes a pair of first support portions respectively supporting the pair of protrusions by hooking the pair of protrusions, the hook member includes a hook portion supporting the handle, the handle includes a pair of extending portions which protrudes in the first direction and a grip portion which connects the extending portions, the hook portion supports the grip portion from below, and the hook member is attached to the supporter so as to be slidable in the first direction.
An aspect of an indoor unit of the present disclosure includes: a housing; a heat exchanger accommodated in the housing; an air supply mechanism accommodated in the housing; and the electrostatic precipitator which is attached to the housing.
An aspect of an air conditioner of the present disclosure includes: the outdoor unit; and an indoor unit connected to the outdoor unit by a circulation path portion through which a refrigerant circulates.
According to an aspect of the present disclosure, the workability of attaching and detaching the device body to and from the indoor unit in the electrostatic precipitator is capable of being improved.
In the following description, directions along the X, Y. and Z axes in the drawings are defined, and each part of an indoor unit 1 is described using each direction. A direction parallel to the X axis is called a “front and rear direction (first direction) X”. A direction parallel to the Y axis is called a “width direction (second direction) Y”. A direction parallel to the Z axis is called a “vertical direction (third direction) Z”. The front and rear direction X, the width direction Y, and the vertical direction Z are directions orthogonal to each other. In the embodiment, in the front and rear direction X, the side indicated by the arrow +X shown in the drawing is called the front side and the side indicated by the arrow −X is called the rear side. In the vertical direction Z, the side indicated by the arrow +Z shown in the drawing is called the upper side and the side indicated by the arrow −Z is called the lower side. The front and rear direction X, the width direction Y, and the vertical direction Z are simply names for describing the arrangement relationship of each part, and the actual arrangement relationship is not limited by these names.
The air conditioner 200 is capable of adjusting the temperature of the indoor air by exchanging heat between the refrigerant 131 flowing through the circulation path portion 130 and the air of the indoor in which the indoor unit 1 is disposed. As the refrigerant 131, for example, a fluorine-based refrigerant or a hydrocarbon-based refrigerant with a low global warming potential (GWP) can be used.
The outdoor unit 100 includes an outdoor unit housing 109, a compressor 112, a heat exchanger 115, a flow control valve 118, a fan 114, a four-way valve 116, and an electrical unit 117. The outdoor unit housing 109 constitutes the outer shell of the outdoor unit 100.
As shown in
The compressor 112 is capable of compressing the refrigerant 131 having flowed into the compressor 112. The compressor 112 may have any structure if the refrigerant 131 is capable of being compressed. The compressor 112 is, for example, a positive displacement rotary compressor. The refrigerant 131 circulates through the circulation path portion 130 by driving the compressor 112.
The heat exchanger 115 is capable of exchanging heat between the refrigerant 131 flowing through the circulation path portion 130 and the air inside the outdoor unit housing 109.
The flow control valve 118 is capable of adjusting the flow rate of the refrigerant 131 flowing through the circulation path portion 130. The flow control valve 118 is an expansion valve that decompresses the refrigerant 131 flowing through the circulation path portion 130. The flow control valve 118 is capable of adjusting the flow rate of the refrigerant 131 and the pressure of the refrigerant 131 by adjusting the opening degree using, for example, the electrical unit 117. The opening degree of the flow control valve 118 is capable of being adjusted in accordance with, for example, the operation state of the indoor unit 1.
The fan 114 is capable of blowing the air that have exchanged heat with the refrigerant 131 by the heat exchanger 115 to the outside of the outdoor unit 100. The fan 114 sucks air outside the outdoor unit 100 from an air inlet (not shown) provided in the outdoor unit housing 109 into the outdoor unit housing 109. The air sucked into the outdoor unit housing 109 passes through the heat exchanger 115 and is sucked into the fan 114. The fan 114 discharges the sucked air toward the air outlet and sends the air from the air outlet to the outside of the outdoor unit 100. The fan 114 may be any type of fan. The fan 114 is, for example, a propeller fan.
The four-way valve 116 is provided in a portion which is connected to the discharge side of the compressor 112 in the circulation path portion 130. The four-way valve 116 is capable of reversing a direction of the refrigerant 131 flowing through the circulation path portion 130 by switching a part of the circulation path portion 130. In a case that the path connected via the four-way valve 116 is the path indicated by the solid line in the four-way valve 116 of
The electrical unit 117 controls each part of the outdoor unit 100. The electrical unit 117 is, for example, a system control unit that controls the entire air conditioner 200. The electrical unit 117 includes a circuit board.
In the embodiment, the indoor unit 1 can perform a cooling operation of cooling the air of the indoor in which the indoor unit 1 is disposed and a heating operation of heating the air of the indoor in which the indoor unit 1 is disposed. As shown in
The heat exchanger 22 is provided in a portion, where is located inside the housing 21, in the circulation path portion 130. The heat exchanger 22 is exchangeable heat between the refrigerant 131 flowing through the circulation path portion 130 and the air inside the housing 21. The heat exchanger 22 may have any structure if the heat is capable of being exchanged between the refrigerant 131 and the air inside the housing 21. The structure of the heat exchanger 22 may be the same as the structure of the heat exchanger 115 of the outdoor unit 100 or may be different from the structure of the heat exchanger 115.
The indoor fan 23 is an air supply mechanism that is capable of blowing the air having exchanged heat with the refrigerant 131 in the heat exchanger 22 to the outside of the indoor unit 1. The indoor fan 23 sucks the indoor air into the housing 21 from an air inlet 21c (see
When the indoor unit 1 is in the cooling operation, the refrigerant 131 flowing through the circulation path portion 130 flows in the direction indicated by the solid arrow in
On the other hand, when the indoor unit 1 is in the heating operation, the refrigerant 131 flowing through the circulation path portion 130 flows in the direction indicated by the dashed line in
The indoor unit 1 includes an electrostatic precipitator 3 other than the heat exchanger 22 and the indoor fan 23. The electrostatic precipitator 3 is provided at a position overlapping apart of the air inlet 21c in the vertical direction Z. That is, the electrostatic precipitator 3 is provided on an intake air passage of the indoor unit 1. In this embodiment, the electrostatic precipitator 3 is provided below the air inlet 21c.
As shown in
As shown in
The device body 5 includes a handle 52. The handle 52 protrudes toward the front side (+X side) from the substantially center portion of the front surface 56 of the device housing 50 in the width direction Y. As shown in
The device body 5 includes a temporary fixing protrusion 53. The temporary fixing protrusion 53 protrudes toward the front side (+X side) from a portion located on the upper side in relation to the handle 52 in the front surface 56. More specifically, the temporary fixing protrusion 53 protrudes toward the front side from the center of the width direction Y at the upper end portion in the front surface 56. In the width direction Y, the temporary fixing protrusion 53 is located between the extending portions 522 of the handle 52. The front end portion of the temporary fixing protrusion 53 is located on the rear side (−X side) in relation to the grip portion 521. In this embodiment, the position of the temporary fixing protrusion 53 in the width direction Y is included in the position of the handle 52 in the width direction Y. More specifically, the position of the temporary fixing protrusion 53 in the width direction Y includes the position of the width direction Y at the center of the handle 52 in the width direction Y.
The supporter 7 includes a pair of wall portions 782 and 783 which faces both end portions of the device body 5 in the width direction Y. The pair of wall portions 782 and 783 is respectively provided at both end portions of the extending portion 79 in the width direction Y. The pair of wall portions 782 and 783 protrudes downward from the end portion of the extending portion 79 in the width direction Y. The wall portion 783 provided at the end portion on one side (+Y side) of the extending portion 79 in the width direction Y also serves as the side wall of the covering portion 781. The wall portion 782 provided on the other side (−Y side) of the extending portion 79 in the width direction Y is a plate-shaped wall that extends downward from the extending portion 79.
The supporter 7 includes a pair of first support portions 71 respectively provided in the pair of wall portions 782 and 783. Each first support portion 71 is provided on the surface facing the other wall portion in each of the pair of wall portions 782 and 783. The first support portion 71 protrudes in the width direction Y from the wall portions 782 and 783. The first support portion 71 has a substantially U shape that opens forward when viewed in the width direction Y.
As shown in
The supporter 7 includes a second support portion 77. The second support portion 77 supports the device body 5 by supporting the handle 52 via the hook member 9. As shown in
As shown in
The second support portion 77 includes a pair of protruding wall portions 76. The pair of protruding wall portions 76 is a wall protruding downward from the lower surface of the plate-shaped portion 77a. The pair of protruding wall portions 76 is provided at positions apart from each other in the width direction Y to be parallel to each other along the front and rear direction X. The pair of protruding wall portions 76 is disposed to sandwich the pair of slide guide portions 74 in the width direction Y. The pair of protruding wall portions 76 protrudes downward from the pair of slide guide portions 74. As shown in
As shown in
As described above, in the second support portion 77 of this embodiment, the fixing hole 75 is formed at the center portion of the plate-shaped portion 77a in the width direction Y and the second hole 73, the slide guide portion 74, and the protruding wall portion 76 are provided in this order from the fixing hole 75 toward the outside (both sides) of the width direction Y.
As shown in
As shown in
An opening 90a penetrating the wall portion in the front and rear direction X is formed in the wall portion located on the rear side (−X side) in the wall portion constituting the base portion 90. The opening 90a opens to be continuous to the hole portion 92a of the screw fixing portion 92. The wall portion located on the front side (+X side) in the wall portion constituting the base portion 90 is a hook handle 95. The hook handle 95 extends in the width direction Y. The hook handle 95 is a portion which is gripped by the operator who slides the hook member 9 in the front and rear direction X. The operator can grip the hook handle 95 by inserting a finger into the base portion 90 from below.
The hook portion 91 is connected to the lower side of the wall portion located on the rear side (−X side) in the wall portion constituting the base portion 90. The hook portion 91 includes a vertical wall portion 911 and a lower support portion 912. The vertical wall portion 911 extends downward from the wall portion located on the rear side in the wall portion constituting the base portion 90. The lower support portion 912 extends backward from the lower end portion of the vertical wall portion 911. As indicated by the dashed line in
The rear end portion of the lower support portion 912 is provided with a locking protrusion 914 which protrudes upward (+Z side). The upper end of the locking protrusion 914 is located above the lower end of the grip portion 521. The locking protrusion 914 is hooked by the lower end portion of the grip portion 521 from the rear side (−X side) in the regular fixed state. Accordingly, the locking protrusion 914 can suppress the grip portion 521 from moving backward with respect to the hook member 9.
A contact portion 915 is formed on the surface on the rear side (−X side) of the hook portion 91. The contact portion 915 faces the surface on the front side (+X side) of the grip portion 521 in the front and rear direction X. The contact portion 915 has a shape along the front surface of the grip portion 521. The contact portion 915 contacts the front surface of the grip portion 521 in the regular fixed state.
As shown in
The pair of claw portions 94 is respectively provided in the pair of protrusions 93. Each claw portion 94 is formed to protrude upward (+Z side) from the rear end portion in the upper surface 932 of each protrusion 93. As shown in
Although not shown in the drawings, the electrostatic precipitator 3 includes a dust collection mechanism having a dust collection electrode, a power supply terminal, a power reception terminal, and the like. When the air conditioner 200 is operated, a high voltage is applied from the voltage generator 14 to the dust collection electrode via the power supply terminal and the power reception terminal. Accordingly, the electrostatic precipitator 3 is operated to collect air dust and the like sucked into the housing 21 of the indoor unit 1.
Next, the attachment structure of the electrostatic precipitator 3 will be described in more detail.
The hook member 9 is attached to the fixing member 8 together with the supporter 7 while the pair of protrusions 93 is supported from below by the pair of slide guide portions 74. At this time, the claw portion 94 of the hook member 9 passes through the first hole 81 of the fixing member 8 from below. When the pair of protrusions 93 of the hook member 9 slides on the pair of slide guide portions 74 in the front and rear direction X, the claw portion 94 also slides in the front and rear direction X inside the first hole 81 and the second hole 73.
In a state that the hook member 9 is locked to the slide guide portion 74, the screw 10 is inserted into the base portion 90 from below, passes through the hole portion 92a of the screw fixing portion 92 of the hook member 9 and the fixing hole 75 of the second support portion 77, and the screw 10 is threaded into the screw fixing hole 86 of the fixing member 8. In the case of the temporarily fixed state, the screw 10 is not fully tightened and is loosened to the extent that the screw does not fall off. In this state, the hook member 9 is attached to the supporter 7 while being slidable in the front and rear direction X with respect to the supporter 7. When the hook member 9 moves in the front and rear direction X, the screw head portion of the screw 10 can pass through the wall portion on the rear side (−X side) of the base portion 90 in the front and rear direction X, for example, through the opening 90a.
As shown in
The operator who maintains the device body 5 temporarily fixes the device body 5 to the supporter 7 while the hook member 9 is slidable in the front and rear direction X. Specifically, the operator brings the device body 5 close to the supporter 7 from below, arranges the guided surfaces 511 of the pair of protrusions 51 on the pair of first support portions 71, and supports the pair of protrusions 51 from below by the pair of first support portions 71. Further, the operator inserts the temporary fixing protrusion 53 of the device housing 50 into the temporary fixing portion 72 of the supporter 7 from the rear side toward the front side, and supports the temporary fixing protrusion 53 to the temporary fixing portion 72 from below. Accordingly, the device body 5 is supported by the supporter 7 from below, and the device body 5 is temporarily fixed to the supporter 7. At this time, as shown in
When the device body 5 is temporarily fixed to the supporter 7, the device body 5 is held while being attached to the supporter 7 even when the operator releases hands from the device body 5. In this state, the operator grips the hook handle 95, slides the hook member 9 toward the rear side (−X side), and supports the grip portion 521 of the handle 52 from below by the lower support portion 912 of the hook portion 91. The operator fully tightens the screw 10 while supporting the grip portion 521 from below by the hook portion 91. Accordingly, the hook member 9 is fixed to the supporter 7 and the fixing member 8 not to be slidable in the front and rear direction X. Therefore, the handle 52 of the device body 5 is capable of being preferably held while being supported from below by the hook member 9 and the device body 5 is capable of being regularly fixed to the supporter 7 and the fixing member 8. Additionally, in this embodiment, the hook member 9 and the supporter 7 are jointly fastened to the fixing member 8 by the screw 10.
According to this embodiment, the device body 5 includes the handle 52 protruding in the front and rear direction X and a pair of protrusions 51 protruding from both end side surfaces of the width direction Y orthogonal to the front and rear direction X. The supporter 7 includes a pair of first support portions 71 which is used to hook the pair of protrusions 51 thereto and respectively supports the pair of protrusions 51. The hook member 9 includes a hook portion 91 which supports the handle. Therefore, the device body 5 is capable of being temporarily fixed to the supporter 7 by hooking the pair of protrusions 51 to the pair of first support portions 71, and in this state, the device body 5 is capable of being regularly fixed to the supporter 7 in a stable manner by supporting the handle 52 in such a manner that the hook portion 91 is fixed. Accordingly, for example, even when the support of the device body 5 by the hook member 9 is released when detaching the device body 5 for maintenance or the like, a state in which the device body 5 is temporarily fixed by the pair of protrusions 51 is capable of being maintained and the device body 5 is preferably suppressed from falling off. The device body 5 is capable of being stably fixed to the supporter 7 in the regular fixed state in which the device body 5 is supported by the hook member 9. Therefore, the regular fixed device body 5 is preferably suppressed from falling off. As described above, according to this embodiment, the workability of attaching and detaching the device body 5 to and from the indoor unit 1 is possible to be improved.
According to this embodiment, the handle 52 includes a pair of extending portions 522 protruding in the front and rear direction X and a grip portion 521 which connects each of the extending portions 522. The hook portion 91 supports the grip portion 521 from below. Therefore, the device body 5 can be more stably supported by the hook portion 91 and the device body 5 which is regularly fixed is more preferably suppressed from coming off.
According to this embodiment, the hook member 9 is attached to the supporter 7 to be slidable in the front and rear direction X. Therefore, when the hook member 9 is moved in the front and rear direction X as described above, it is possible to switch between a state in which the hook member 9 supports the handle 52 of the device body 5 and a state in which the hook member 9 does not support the handle 52 of the device body 5. Accordingly, it is possible to easily switch between a state in which the device body 5 is temporarily fixed and a state in which the device body 5 is regularly fixed.
According to this embodiment, the supporter 7 includes the second support portion 77 which supports the hook member 9. The hook member 9 includes the pair of protrusions 93 which respectively protrudes from both sides of the width direction Y. The second support portion 77 includes the pair of slide guide portions 74 which respectively supports the pair of protrusions 93 from below to be slidable in the front and rear direction X. Therefore, the hook member 9 is capable of being fixed to the supporter 7 to be movable in the front and rear direction X in a more stable state. Accordingly, the hook member 9 slides easily in the front and rear direction X and the workability of attaching and detaching the device body 5 to and from the indoor unit 1 is further improved.
According to this embodiment, the second support portion 77 is disposed to face the lower side of the fixing member 8. The fixing member 8 is provided with the first hole 81 which extends in the front and rear direction X. The second support portion 77 is provided with the second hole 73 which extends in the front and rear direction X to face the first hole 81. The hook member 9 includes the claw portion 94 which protrudes upward from the protrusion 93. The claw portion 94 is located on the slide guide portion 74 while passing through the first hole 81 and the second hole 73 and contacting the edge portion on the front side of the first hole 81 (one side of the first direction). Therefore, as described above, the claw portion 94 is capable of being suppressed from being hooked to the front edge of the first hole 81 so that the hook member 9 is disengaged from the supporter 7 toward the front side. Accordingly, the hook member 9 is capable of being suppressed from falling off from the supporter 7 and the hook member 9 slides more preferably in the front and rear direction X. Thus, the workability of attaching and detaching the device body 5 to and from the indoor unit 1 is further improved.
According to this embodiment, the hook member 9 includes the screw fixing portion 92 which is fixed to the supporter 7 by the screw 10. The hook member 9 is slidable with respect to the supporter 7 while the fixing of the screw fixing portion 92 using the screw 10 is released. Therefore, the hook member 9 can be made slidable in the front and rear direction X by loosening the screw 10 and the hook member 9 can be made non-slidable in the front and rear direction X by tightening the screw 10. Accordingly, it is possible to more easily switch between a state in which the hook member 9 is movable in the front and rear direction X and a state in which the hook member 9 is fixed to the supporter 7 and the fixing member 8 and is not movable in the front and rear direction X. Further, the hook member 9 can be firmly fixed by the screw 10.
According to this embodiment, the device body 5 includes the temporary fixing protrusion 53. The supporter 7 includes the temporary fixing portion 72 to which the temporary fixing protrusion 53 is locked. The position of the temporary fixing protrusion 53 in the width direction Y is included in the position of the handle 52 in the width direction Y. Therefore, when the device body 5 is temporarily fixed to the supporter 7, the temporary fixing protrusion 53 is capable of being supported even by the temporary fixing portion 72 in addition to the support of the pair of protrusions 51 by the pair of first support portions 71. Further, since the position of the temporary fixing protrusion 53 in the width direction Y is included in the position of the handle 52 in the width direction Y, the device body 5 is capable of being stably supported in the width direction Y in a balanced manner by supporting the pair of protrusions 51 and the temporary fixing protrusion 53. Accordingly, the device body 5 is capable of being temporarily fixed more stably. Thus, the device body 5 is capable of being more stably suppressed from falling off during maintenance or the like.
According to this embodiment, the electrostatic precipitator, the indoor unit, and the air conditioner having excellent attachment and detachment workability is capable of being provided.
According to this embodiment, the hook member 9 is slidable with respect to the supporter 7 while the fixing of the hook member 9 at the screw fixing portion using the screw 10 is released and the hook member 9 fixes the engagement position of the device body 5 with respect to the supporter 7 while being fixed by the screw 10. Thus, the state in which the hook member 9 is slidable or fixed is switched only by the operation of turning the screw 10. Since the hook member 9 is fixed to the supporter by the screw, the hook member is slidable when the screw 10 is loosened. Thus, since it is not necessary to detach the screw 10 during maintenance, the workability is excellent.
According to the embodiment, a screw hole is formed in the thickness direction to penetrate each of the fixing plate, the second support portion, and the screw fixing portion, the screw 10 is inserted into each screw hole from below, and the hook member and the supporter are threaded to the fixing member. That is, the device body and the supporter are fixed to the fixing plate at the same position by the screw. Therefore, the device body is stably supported without being displaced from the supporter in the regular fixed state in which the device body which is attached to the fixing plate, the second support portion, the hook member, and the hook member are regularly fixed by the screw 10. As a result, effects such as maintaining the energized state of the device body and preventing vibration are obtained. In addition, since a fixing operation or a fixing release operation of the device body and the supporter with respect to the fixing plate is capable of performing by operating the screw 10, the convenience in operation is high.
According to this embodiment, since the indoor unit includes the device body 5 that prevents the device body from falling off during installation or maintenance and is easily fixed temporarily or regularly, a highly convenient indoor unit is capable of being provided.
Although the embodiment in the present disclosure has been described above, the present disclosure is not limited only to the configuration of the above-described embodiment and the following configuration and method can be also employed. In the embodiment, an example is shown in which the pair of wall portions 782 and 783 protrudes from the facing surfaces to form the first support portion 71, and the first support portion 71 supports the guided surface 511 of the protrusion 51 of the device body 5 from below, but the configuration in which the first support portion supports the device body is not limited thereto. For example, a protrusion may be provided at the lower end portion of the device body, a receiving portion supporting the lower end portions at both ends of the device body in the width direction Y may be formed on an inner wall, and both end portions of the device body in the width direction Y may be supported from below.
In this embodiment, an example is shown in which the second hole 73 of the second support portion 77 is configured as a pair of elongated holes formed to be apart from each other in the width direction Y, the second hole is not limited to this form. The second hole may have a shape in which at least a part of the opening edge extends linearly in the front and rear direction X so that the second hole can guide the hook member 9 to be slidable in the front and rear direction X. The second hole may guide the hook member 9 to be slidable in the front and rear direction X and the second hole may be formed at one position of the second support portion 77.
In the embodiment, an example has been shown in which the supporter 7 and the hook member 9 are different components, but the supporter may be provided with the hook portion. For example, the supporter and the hook portion may be integrally formed with each other.
As described above, each configuration and each method described in this specification can be appropriately combined as long as they do not contradict each other.
This application is a U.S. national stage application of International Application No. PCT/JP2021/014312, filed on Apr. 2, 2021, the contents of which are incorporated herein by reference.
Filing Document | Filing Date | Country | Kind |
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PCT/JP2021/014312 | 4/2/2021 | WO |