ELECTRICAL DEVICE, INDOOR UNIT, AND AIR CONDITIONER

Abstract

An aspect of this electrical device includes: a body controller which controls the electrical device; a voltage generator which generates a voltage supplied to the electrical device; a wiring which connects the body controller to the voltage generator; and an electrical device casing which accommodates the body controller and the voltage generator, wherein the electrical device casing includes: a wiring chamber in which the wiring is arranged; a first chamber in which the body controller is accommodated; and a second chamber in which the voltage generator is accommodated, wherein an inside of the first chamber and an inside of the second chamber are connected to each other through the inside of the wiring chamber.

Description

CROSS REFERENCE TO RELATED APPLICATION

This application is a U.S. national stage application of International Application No. PCT/JP2021/013196, filed on Mar. 29, 2021, the contents of which are incorporated herein by reference.

TECHNICAL FIELD

The present disclosure relates to an electrical device, an indoor unit, and an air conditioner.

BACKGROUND

For example, Patent Document 1 discloses an air conditioner having a configuration in which a negative ion generation power supply unit board and a negative ion power supply unit are accommodated in a unit casing and the power supply unit and the like are covered with a support casing. There are cases that various electrical devices are attached to the above-described air conditioner in addition to a negative ion generator. Various electrical devices are respectively provided with connection wirings among the board, the power supply unit, and the device body.

[Patent Document]

[Patent Document 1]

• Japanese Unexamined Patent Application, First Publication No. 2002-71164

At the time of the installation or maintenance of an indoor unit, works that various electrical devices are attached to or detached from the indoor unit are performed. At this time, since it is necessary to prevent the connection wiring from contacting and damaging other components and to prevent incorrect wiring, it takes time for the attaching and detaching work.

[Summary]

The present disclosure has been made in view of the above-described circumstances and an object thereof is to provide an electrical device, an indoor unit, and an air conditioner capable of suppressing damage of wiring and incorrect wiring of the electrical device.

An aspect of an electrical device of the present disclosure is an electrical device provided in an indoor unit of an air conditioner, including: a body controller which controls the electrical device; a voltage generator which generates a voltage supplied to the electrical device; a wiring which connects the body controller to the voltage generator; and an electrical device casing which accommodates the body controller and the voltage generator, wherein the electrical device casing includes a wiring chamber in which the wiring is arranged; a first chamber in which the body controller is accommodated and a second chamber in which the voltage generator is accommodated, wherein an inside of the first chamber and an inside of the second chamber are connected to each other through the inside of the wiring chamber.

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 electrical device attached to the housing.

An aspect of an air conditioner of the present disclosure includes: the indoor unit; and an outdoor unit which is connected to the indoor unit by a circulation path portion through which a refrigerant circulates.

According to one aspect of the present disclosure, it is possible to suppress damage of wiring and incorrect wiring of the electrical device in the indoor unit of the air conditioner.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a schematic view showing a schematic configuration of an air conditioner according to an embodiment.

FIG. 2 is a perspective view showing a schematic configuration of an indoor unit according to the embodiment.

FIG. 3 is an exploded perspective view showing a schematic configuration of the indoor unit according to the embodiment.

FIG. 4 is an exploded perspective view showing a schematic configuration of an electrical device according to the embodiment.

FIG. 5 is a plan view showing a schematic configuration of the inside of the electrical device according to the embodiment.

FIG. 6 is a plan view of a cover member of the embodiment.

FIG. 7 is a perspective view showing the inside of the electrical device according to the embodiment.

DETAILED DESCRIPTION

Hereinafter, an electrical device, an indoor unit, and an air conditioner according to an embodiment will be described with reference to the drawings. The scope of the present disclosure is not limited to the following embodiments, and can be arbitrarily changed within the scope of the technical ideas of the present disclosure.

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 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.

FIG. 1 is a schematic view showing a schematic configuration of an air conditioner 200 according to an embodiment. The air conditioner 200 is a device utilizing a refrigeration cycle in which a refrigerant 131 circulates. As shown in FIG. 1, the air conditioner 200 includes an outdoor unit 100, the indoor unit 1, and a circulation path portion 130. The outdoor unit 100 is disposed outdoors. The indoor unit 1 is disposed indoors. The outdoor unit 100 and the indoor unit 1 are connected to each other by the circulation path portion 130. The circulation path portion 130 includes a conduit through which the refrigerant 131 flows between the outdoor unit 100 and the indoor unit 1.

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 FIG. 1, the compressor 112, the heat exchanger 115, the flow control valve 118, the fan 114, the four-way valve 116, and the electrical unit 117 are accommodated in the outdoor unit housing 109. The compressor 112, the heat exchanger 115, the flow control valve 118, and the four-way valve 116 are provided in a portion located inside the outdoor unit housing 109 in the circulation path portion 130. The compressor 112, the heat exchanger 115, the flow control valve 118, and the four-way valve 116 are connected to each other by a portion located inside the outdoor unit housing 109 in the circulation path portion 130.

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 FIG. 1, the refrigerant 131 flows through the circulation path portion 130 in the direction indicated by the solid arrow in FIG. 1. On the other hand, in a case that the path connected via the four-way valve 116 is the path indicated by the dashed line in the four-way valve 116 of FIG. 1, the refrigerant 131 flows through the circulation path portion 130 in the direction indicated by the dashed arrow in FIG. 1.

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 FIG. 1, the indoor unit 1 includes a housing 21, a heat exchanger 22, and an indoor fan (air supply mechanism) 23. The heat exchanger 22 and the indoor fan 23 are accommodated in the housing 21.

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 FIG. 2) provided in the housing 21. The air sucked into the housing 21 passes through, for example, the heat exchanger 22 and is sucked into the indoor fan 23.

The indoor fan 23 discharges the sucked air toward an air outlet 21d (see FIG. 2) provided in the housing 21 and sends the air from the air outlet 21d to the outside of the indoor unit 1. Accordingly, the air having exchanged heat with the refrigerant 131 by the heat exchanger 22 is blown into the room from the air outlet 21d. The indoor fan 23 may be any type of blower. The indoor fan 23 may be the same kind of fan as the fan 114 of the outdoor unit 100 or may be the different kind of fan from the fan 114. The indoor fan 23 is, for example, a cross flow fan.

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 FIG. 1. That is, when the indoor unit 1 is in the cooling operation, the refrigerant 131 flowing through the circulation path portion 130 flows in the direction to pass through the compressor 112, the heat exchanger 115 of the outdoor unit 100, the flow control valve 118, and the heat exchanger 22 of the indoor unit 1 in this order and to return to the compressor 112. In the cooling operation, the heat exchanger 115 in the outdoor unit 100 functions as a condenser and the heat exchanger 22 in the indoor unit 1 functions as an evaporator.

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 FIG. 1. That is, when the indoor unit 1 is in the heating operation, the refrigerant 131 flowing through the circulation path portion 130 circulates in the direction to pass through the compressor 112, the heat exchanger 22 of the indoor unit 1, the flow control valve 118, and the heat exchanger 115 of the outdoor unit 100 in this order and to return to the compressor 112. In the heating operation, the heat exchanger 115 in the outdoor unit 100 functions as an evaporator and the heat exchanger 22 in the indoor unit 1 functions as a condenser.

FIG. 2 is a perspective view showing a part of the indoor unit 1 of the embodiment. FIG. 3 is an exploded perspective view of the indoor unit 1 according to the embodiment. FIG. 4 is an exploded perspective view of an electrical device 3 according to the embodiment. FIG. 5 is a plan view showing the inside of the electrical device 3. In FIG. 2, a decorative panel 24 to be described later is omitted. In FIG. 5, an upper wall portion of a casing body 31 to be described later is omitted. FIG. 6 is a plan view of a portion in which a voltage generator 14 is disposed in a cover member 70.

As shown in FIGS. 2 and 3, in the embodiment, the indoor unit 1 is a ceiling-embedded type indoor unit 1 that is capable of being embedded in the indoor ceiling. The lower portion of the indoor unit 1 is arranged along the indoor ceiling and the upper portion of the indoor unit 1 is embedded in the ceiling and fixed to the ceiling. The housing 21 of the indoor unit 1 includes a body portion 21a and a casing 21b, the body portion 21a is fixed to the ceiling, and the casing 21b has a frame-shape and is fixed below the body portion 21a. The housing 21 has a substantially prismatic outer shape. The bottom surface of the casing 21b has a substantially octagonal shape with inclined sides at the four corners of the quadrangle in a plan view. The air outlet 21d is formed on the bottom surface of the casing 21b along four main sides extending in the front and rear direction X and the width direction Y. The air inlet 21c is formed at the center portion of the casing 21b in a plan view. The air outlet 21d and the air inlet 21c open to the interior. The decorative panel 24 is detachably provided on the bottom surface of the casing 21b. The bottom portion of the indoor unit 1 is covered with the decorative panel 24 allow ventilation and to hide the inside of the housing 21 from being seen.

The indoor unit 1 includes the electrical device 3 other than the heat exchanger 22 and the indoor fan 23. The electrical device 3 is fixed to a support plate 10 which is installed so as to cross the air inlet 21c of the casing 21b. The electrical device 3 is provided at a position overlapping a part of the air inlet 21c in the vertical direction Z. That is, the electrical device 3 is provided on an intake air passage of the indoor unit 1. In the embodiment, the electrical device 3 is provided below the air inlet 21c. The electrical device 3 is, for example, an electrostatic precipitator or a negative ion generator. In the embodiment, the electrical device 3 is an electrostatic precipitator.

As shown in FIGS. 2 to 4, the electrical device 3 includes an electrical device casing 30 which is attached to the housing 21 of the indoor unit 1. As shown in FIGS. 4 and 5, the electrical device 3 includes a body controller 13, a voltage generator 14, a wiring 12, and a filter unit 40. As shown in FIG. 4, the electrical device casing 30 includes a casing body 31, a cover member 70, and a board cover 32. In the embodiment, the cover member 70 is made of resin and the board cover 32 is made of metal.

The casing body 31 is fixed to the housing 21 of the indoor unit 1 via the support plate 10. The body controller 13 and the voltage generator 14 are attached to the casing body 31. The casing body 31 includes a first attachment portion (accommodating portion) 33 to which the body controller 13 is attached and a second attachment portion 34 to which the voltage generator 14 is attached. The first attachment portion 33 has a rectangular box shape and is opened downward. The body controller 13 is fixed to the wall portion located on the upper side (+Z side) in the first attachment portion 33. The body controller 13 includes a control board controlling the operation of the electrical device 3. In the embodiment, the first attachment portion 33 is an accommodating portion which accommodates the body controller 13.

As shown in FIG. 5, the second attachment portion 34 is located on the front side (+X side) of the first attachment portion 33. The second attachment portion 34 extends in the width direction Y. The second attachment portion 34 protrudes toward one side (+Y side) of the width direction Yin relation to the first attachment portion 33. The voltage generator 14 and the transforming unit 15 are arranged side by side in the width direction Y at a portion protruding toward one side of the width direction Yin relation to the first attachment portion 33 in the second attachment portion 34. The transforming unit 15 is disposed side by side on the other side (−Y side) of the width direction Y of the voltage generator 14.

As shown in FIG. 4, the cover member 70 extends in the width direction Y.

The cover member 70 is attached below the second attachment portion 34. The cover member 70 includes a covering portion 71 which covers the voltage generator 14 from below. In the embodiment, the covering portion 71 has a container shape opening upward and accommodates the voltage generator 14 therein. The cover member 70 includes an extending portion 72 which extends from the covering portion 71 toward one side (+Y side) of the width direction Y. The extending portion 72 is attached below a portion that is disposed side by side on the front side (+X side) of the first attachment portion 33 in the second attachment portion 34. A through-hole 72a is formed in the extending portion 72 to penetrate the extending portion 72 in the vertical direction Z.

As shown in FIG. 6, the covering portion 71 of the cover member 70 includes: an accommodating portion 74 which accommodates the voltage generator 14; and a path portion 78 having a groove shape and opens toward the casing body 31. The accommodating portion 74 has a container shape and opens downward. In the embodiment, the path portion 78 opens upward. The path portion 78 is located around the accommodating portion 74. The path portion 78 has a substantially L shape in a plan view. The path portion 78 includes a first path portion 78a, a second path portion 78b, and a third path portion 78c.

The first path portion 78a is located on the rear side (−X side) of the accommodating portion 74. The first path portion 78a extends in the width direction Y. An end portion on the other side (−Y side) of the width direction Yin the first path portion 78a is located on the other side of the width direction Yin relation to the accommodating portion 74. An end portion on one side (+Y side) of the width direction Yin the first path portion 78a is located on one side of the width direction Yin relation to the accommodating portion 74.

As shown in FIG. 7, an end portion on the other side of the width direction Y of the first path portion 78a protrudes toward the other side of the width direction Y and is inserted into an opening portion 33b formed in a side wall portion 33a of the first attachment portion 33. That is, the opening portion 33b is formed along the vertical direction Z and opens to the lower end of the side wall portion 33a. The side wall portion 33a is a wall portion which is located on one side (+Y side) of the width direction Y in the wall portion constituting the first attachment portion 33. An end portion on the other side of the width direction Yin the first path portion 78a is a first opening portion 75a which opens to the inside of the first attachment portion 33.

The second path portion 78b extends from an end portion on one side (+Y side) of the width direction Yin the first path portion 78a to the front side (+X side). An end portion on the front side of the second path portion 78b is located on the front side in relation to the accommodating portion 74. The third path portion 78c extends from an end portion on the front side of the second path portion 78b toward the other side (−Y side) of the width direction Y. An end portion on the other side (−Y side) of the width direction Yin the third path portion 78c is connected to the front wall portion of the accommodating portion 74. An end portion on the other side (−Y side) of the width direction Y in the third path portion 78c is a second opening portion 75b which opens to the inside of the accommodating portion 74. The dimension of the third path portion 78c in the width direction Y is smaller than the dimension of the first path portion 78a in the width direction Y.

The voltage generator 14 includes a transforming unit 15 and is configured to boost the electric power supplied from the body controller 13 by the transforming unit 15 and generate the voltage required to operate the electrical device 3. The voltage generator 14 is configured to adjust the voltage value of a DC voltage in accordance with the operating status of the electrical device 3. The voltage generator 14 is connected to the body controller 13 by the wiring 12.

The wiring 12 is a bundle wiring including a control wiring connecting the voltage generator 14 and the body controller 13 and a power supply wiring connecting the voltage generator 14 and the body controller 13. The wiring 12 may be composed of a plurality of unbundled wirings or may be composed of only one wiring.

The filter unit 40 extends in the width direction Y The filter unit 40 is attached below the cover member 70. The filter unit 40 is detachably provided in the cover member 70. In the embodiment, the filter unit 40 is attached to the cover member 70 by the support member 50. The support member 50 is fixed to the cover member 70 and supports the filter unit 40 from below. The filter unit 40 includes a filter holding portion 41, a filter 42, and a dust collecting electrode (not shown). The filter holding portion 41 is a frame which opens toward both sides of the vertical direction Z. The filter 42 is held inside the filter holding portion 41.

For example, a part of the electric power supplied to the indoor unit 1 is supplied to the electrical device 3. The electric power supplied to the electrical device 3 passes through the body controller 13, the wiring 12, the voltage generator 14, and the transforming unit 15 in this order and is supplied to a connection terminal (not shown) of the filter unit 40. Accordingly, the electrical device 3 is operated.

As shown in FIG. 5, the electrical device casing 30 includes a first chamber 61 in which the body controller 13 is accommodated, a second chamber 62 in which the voltage generator 14 is accommodated, and a wiring chamber 63 in which the wiring 12 is arranged. In the embodiment, the first chamber 61 is formed by the casing body 31 and the board cover 32. More specifically, the first chamber 61 is formed by closing the opening of the first attachment portion 33 having a box shape opening downward in the casing body 31 with the board cover 32.

In the embodiment, the second chamber 62 is formed by the casing body 31 and the cover member 70. More specifically, the second chamber 62 is formed by closing the opening of the covering portion 71 having a container shape opening upward in the cover member 70 with the second attachment portion 34 of the casing body 31. The inside of the first chamber 61 and the inside of the second chamber 62 are connected to each other through the inside of the wiring chamber 63.

In the embodiment, the wiring chamber 63 is formed by the casing body 31 and the cover member 70. More specifically, the wiring chamber 63 is formed by closing the upper opening of the path portion 78 having a groove shape with the second attachment portion 34 of the casing body 31. The wiring chamber 63 is formed in a duct shape extending along the wiring the direction of the wiring 12. That is, the wiring chamber 63 is formed along the path of the wiring 12 to surround the wiring 12. The shape of the wiring chamber 63 in a plan view is the same as the shape of the path portion 78 in a plan view. In the embodiment, the shape of the wiring chamber 63 in a plan view is a substantially L shape. In the embodiment, the first opening portion 75a of the path portion 78 is an opening portion that opens to the first chamber 61 in the wiring chamber 63. The second opening portion 75b of the path portion 78 is an opening portion that opens to the second chamber 62 in the wiring chamber 63.

As shown in FIG. 6, the inner wall of the wiring chamber 63 is provided with at least one rib 76 that protrudes into the wiring chamber 63. In the embodiment, the rib 76 is provided in a wall portion that faces a direction orthogonal to the vertical direction Z in the inner wall of the wiring chamber 63. More specifically, the rib 76 is provided in the inner wall located in the front and rear direction X of the first path portion 78a of the cover member 70. In the embodiment, the rib 76 protrudes in a direction intersecting the extension direction of the wiring chamber 63.

In the embodiment, the rib 76 includes a first rib 76a and a second rib 76b. The first rib 76a protrudes toward the front side (+X side) from the inner wall 73a located on the rear side (−X side) in the first path portion 78a. The second rib 76b protrudes toward the rear side (−X side) from the inner wall 73b located on the front side in the first path portion 78a. The second rib 76b is located on one side (+Y side) of the width direction Y in relation to the first rib 76a.

A gap through which the wiring 12 is capable of being inserted is formed between the protruding end of each rib 76 in the front and rear direction X and the inner walls 73a and 73b. The first rib 76a faces the inner wall 73b in the front and rear direction X with a gap therebetween. The second rib 76b faces the inner wall 73a in the front and rear direction X with a gap therebetween. The wiring 12 passes through the gap between the first rib 76a and the inner wall 73b and the gap between the second rib 76b and the inner wall 73a.

According to the above-described embodiment, the electrical device casing 30 includes the wiring chamber 63 in which the wiring 12 is arranged. Therefore, the wiring 12 disposed in the wiring chamber 63 is capable of being covered with the electrical device casing 30 and exposure of the wiring 12 to the outside of the electrical device 3 can be suppressed. Accordingly, damage of the wiring 12 is capable of being suppressed. Since the body controller 13 and the voltage generator 14 is capable of being connected via the wiring 12 inside the electrical device casing 30, there is no need to connect the wiring 12 when attaching the electrical device 3 to the housing 21 of the indoor unit 1. Accordingly, incorrect wiring such as routing of the wiring 12 along an incorrect path does not occur when the electrical device 3 is attached. As described above, according to the embodiment, damage and incorrect wiring of the wiring 12 of the electrical device 3 can be suppressed. Therefore, the electrical device 3 can be easily attached to and detached from the housing 21. As a result, the installation work and maintenance work of the electrical device 3 can be made more efficient. Since the wiring 12 is accommodated in the wiring chamber 63, the wiring 12 is not exposed to the outside when the decorative panel 24 is detached. As a result, for example, when cleaning, the wiring 12 is protected and is prevented from contacting other components and the damage of the wiring 12 is prevented.

According to the embodiment, the wiring chamber 63 is formed by the casing body 31 and the cover member 70. The wiring 12 can be protected inside the wiring chamber 63 by forming the wiring chamber 63 in such a manner that the body controller 13 and the voltage generator 14 are connected by the wiring 12 and then the cover member 70 is attached to the casing body 31. In the embodiment, the cover member 70 covers the voltage generator 14 from below. Therefore, the voltage generator 14 can be protected. These wiring 12 and the voltage generator 14 are capable of being protected from dust and the like. By detachably attaching the cover member 70 to the casing body 31, the wiring 12, and the voltage generator 14 is easily exposed. Therefore, the maintenance works of the wiring 12 and the voltage generator 14 are easily performed.

According to the embodiment, the cover member 70 includes the path portion 78 having a groove shape and opens toward the casing body 31. The wiring chamber 63 is formed by closing the opening of the path portion 78 by the casing body 31. Therefore, when the indoor unit 1 is attached to the ceiling as in the embodiment, the wiring 12 that hangs downward due to gravity can be received by the path portion 78 having a groove shape and opens upward. Accordingly, for example, when the cover member 70 is detached and attached again for maintenance or the like, the cover member 70 can be attached to the casing body 31 while the wiring 12 is received from below by the path portion 78 provided in the cover member 70. Thus, the cover member 70 can be easily attached to the casing body 31 while the wiring 12 is accommodated in the wiring chamber 63.

According to the embodiment, the casing body 31 includes the first attachment portion 33 which is an accommodating portion accommodating the body controller 13. The opening portion 33b is provided in the side wall portion 33a constituting the first attachment portion 33. One end portion of the path portion 78 is inserted into the opening portion 33b. Therefore, the wiring 12 is capable of being drawn out directly from the inside of the path portion 78 to the inside of the first attachment portion 33. Accordingly, interfering with other components by a portion of the wiring 12 routed between the wiring chamber 63 and the first chamber 61 is capable of being suppressed. Therefore, damage to the wiring 12 is capable of being further suppressed.

Since the opening portion 33b is provided in the side wall portion 33a, the wiring 12 is capable of being connected to the body controller 13 without bypassing the side wall portion 33a. The opening portion 33b has a shape which is notched in the vertical direction Z from the lower end of the side wall portion 33a. Therefore, the cover member 70 is capable of being attached and detached by an operation of moving the cover member 70 in the vertical direction Z without any interference between the wiring chamber 63 and the side wall portion 33a when the cover member 70 is attached or detached. As a result, tension is less likely to be applied to the wiring 12 when the cover member 70 is attached or detached.

According to the embodiment, at least one rib 76 protruding into the wiring chamber 63 is provided on the inner walls 73a and 73b of the wiring chamber 63. Therefore, for example, when an unexpected force is applied to the wiring 12, the force is likely to be received by the rib 76. Accordingly, tension is not likely to be applied to a connection portion between the body controller 13 and the wiring 12 and a connection portion between the voltage generator 14 and the wiring 12. Thus, detachment of the wiring 12 from each of the body controller 13 and the voltage generator 14 is capable of being suppressed. Since the rib 76 receives a part of the force applied to the wiring 12, locally excessive tension is not likely to be applied to the wiring 12. Therefore, disconnection of the wiring 12 is capable of being suppressed.

When the plurality of ribs 76 are provided as in the embodiment, if the ribs are formed to be separated from each other in the extension direction of the wiring chamber 63 and to alternately protrude from the pair of inner walls facing each other in a direction orthogonal to the extension direction of the wiring chamber 63, application of excessive tension on the wiring 12 is capable of being suppressed. Additionally, the rib 76 is not an essential component and the rib 76 may not be provided inside the wiring chamber 63. The number or position of the rib 76 is not limited to the example shown in the drawings. For example, the rib 76 may be provided to protrude in the vertical direction Z from the upper wall portion of the casing body 31 and the cover member 70. For example, the rib 76 may be provided to protrude in the width direction Y from the inner wall of the second path portion 78b.

According to the embodiment, the electrical device casing 30 includes the first chamber 61 in which the body controller 13 is accommodated and the second chamber 62 in which the voltage generator 14 is accommodated. The inside of the first chamber 61 and the inside of the second chamber 62 are connected to each other through the inside of the wiring chamber 63. Therefore, interference with other components by the wiring 12 routed from the body controller 13 to the voltage generator 14 is capable of being suppressed. Thus, damage of the wiring 12 is capable of being further suppressed.

Although the embodiments in the present disclosure have been described above, the present disclosure is not limited to the configurations of the embodiments described above, and the following configurations and methods can also be adopted. In the following description of other embodiments, the same configurations as those of the above-described embodiments may be omitted by appropriately assigning the same reference numerals.

In the embodiment, an example of a dust collector is shown as an electrical device, but the electrical device is not limited to the dust collector. For example, the electrical device may be a negative ion generator. When the electrical device is the negative ion generator, a negative ion unit is provided instead of the filter unit 40 of the above-described embodiment and the body controller 13 and the voltage generator 14 are attached to the casing body 31 as in the above-described embodiment. The negative ion generator is provided with a negative ion generation needle. The electric power supplied from the power supplier passes through the body controller 13, the wiring 12, the voltage generator 14, and the transforming unit 15 in this order and is supplied to a connection terminal (not shown) of the negative ion generator and a high voltage is supplied to the negative ion generation needle to generate negative ions. Even in the negative ion generator, since the wiring 12 is accommodated in the wiring chamber, the wiring 12 is not exposed to the outside when the decorative panel 24 is detached. As a result, for example, when cleaning, the wiring 12 is protected and is capable of being prevented from contacting other components and the damage of the wiring 12 is capable of being prevented.

The shape of the electrical device casing is not limited to the shape of the above-described example. The electrical device casing may be provided with the wiring chamber accommodating the wiring connecting the body controller and the voltage generator and can be appropriately changed in accordance with the shape and arrangement of the body controller and the voltage generator.

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.

Claims

1. An electrical device provided in an indoor unit of an air conditioner, comprising:

a body controller which controls the electrical device;

a voltage generator which generates a voltage supplied to the electrical device;

a wiring which connects the body controller to the voltage generator; and

an electrical device casing which accommodates the body controller and the voltage generator,

wherein the electrical device casing includes:

a wiring chamber in which the wiring is arranged;

a first chamber in which the body controller is accommodated; and

a second chamber in which the voltage generator is accommodated,

wherein an inside of the first chamber and an inside of the second chamber are connected to each other through the inside of the wiring chamber.

2. The electrical device according to claim 1,

wherein the electrical device casing includes: a casing body to which the body controller and the voltage generator are attached; and a cover member which is arranged to face the casing body, and

wherein the wiring chamber is formed by the casing body and the cover member.

3. The electrical device according to claim 2,

wherein the cover member includes a path portion having groove-shape and opens toward the casing body, and

wherein the wiring chamber is formed by closing an opening of the path portion with the casing body.

4. The electrical device according to claim 3,

wherein the casing body includes an accommodating portion which accommodates the body controller,

wherein an opening portion is provided in a side wall portion constituting the accommodating portion, and

wherein one end portion of the path portion is inserted into the opening portion.

5. The electrical device according to claim 1,

wherein an inner wall of the wiring chamber is provided with at least one rib that protrudes into the wiring chamber.

6. (canceled)

7. The electrical device according to claim 1,

wherein the electrical device is any one of an electrostatic precipitator and an ion generator.

8. An indoor unit comprising:

a housing;

a heat exchanger which is accommodated in the housing;

an air supply mechanism which is accommodated in the housing; and

the electrical device according to claim 1 attached to the housing.

9. An air conditioner comprising:

the indoor unit according to claim 8; and

an outdoor unit which is connected to the indoor unit by a circulation path portion through which a refrigerant circulates.