Indoor units and air conditioners

Abstract

An indoor machine according to an aspect of the present disclosure is an indoor machine which is for an air conditioner and which comprises: an electric dust collector; and a support member to which the electric dust collector is fixed. The electric dust collector has an electric dust collector body having a dust collection part and a dust collection part cover that covers the dust collection part from a first side in a first direction. The electric dust collector body has a first claw. The support member has a first facing wall disposed so as to face the dust collection part cover in a second direction intersecting the first direction. The dust collection part cover has a second claw engaged with the first claw from a second side opposite to the first side, and a second facing wall disposed so as to face the first facing wall in the second direction. The second claw is inserted into the second side of the first claw from a side where the second facing wall is located in the second direction, to be engaged with the first claw. The distance between the first and second facing walls in the second direction is smaller than the engagement width between the first and second claws in the second direction.

Description

[Technical Field]

[0001] The present disclosure relates to an indoor unit and an air conditioner. [Background technology]

[0002] For example, Patent Document 1 describes an air conditioner equipped with an air purifying device that uses an electrostatic precipitator. The air conditioner in Patent Document 1 is provided with a protective cover that prevents fingers from being inserted into the corona discharge section. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2004-69212 Summary of the Invention [Problem to be solved by the invention]

[0004] In the air conditioner of Patent Document 1, the protective cover is attached in an easily detachable manner to improve maintainability. However, in this case, when an operator cleans the dust collection section, there is a risk that the operator may remove the protective cover in the wrong procedure or the protective cover may come off unintentionally.

[0005] The present disclosure has been made to solve the above-mentioned problems, and aims to provide an indoor unit having a structure that can prevent the dust collection section cover that covers the dust collection section of an electric dust collector from accidentally coming off, and an air conditioner equipped with such an indoor unit. [Means for solving the problem]

[0006] One aspect of an indoor unit according to the present disclosure is an indoor unit for an air conditioner, comprising: an electric dust collector; and a support member to which the electric dust collector is fixed; the electric dust collector comprises an electric dust collector body having a dust collecting unit; and a dust collecting unit cover covering the dust collecting unit from a first side in a first direction; the electric dust collector body has first claw portions; the support member has a first opposing wall portion disposed opposite the dust collecting unit cover in a second direction intersecting with the first direction; a second claw portion that engages with the first claw portion from a second side opposite the first side, and a second opposing wall portion that is arranged opposite the first opposing wall portion in the second direction, the second claw portion being inserted into the second side of the first claw portion from the side where the second opposing wall portion is located in the second direction and engaging with the first claw portion, and the distance in the second direction between the first opposing wall portion and the second opposing wall portion is smaller than the engagement width in the second direction between the first claw portion and the second claw portion.

[0007] One aspect of an air conditioner according to the present disclosure includes the above-described indoor unit and an outdoor unit. [Effects of the Invention]

[0008] According to the present disclosure, in an indoor unit of an air conditioner, it is possible to prevent a dust collection section cover that covers a dust collection section of an electric dust collector from accidentally coming off. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a schematic diagram showing a general configuration of an air conditioner according to an embodiment. [Figure 2] FIG. 2 is a perspective view showing the indoor unit according to the embodiment. [Figure 3] FIG. 2 is an exploded perspective view showing the indoor unit according to the embodiment. [Figure 4] 1 is a perspective view showing an air purification device according to an embodiment. [Figure 5] 5 is a cross-sectional view showing a part of the air purification device taken along the VV cross section of FIG. 4. FIG. [Figure 6] FIG. 2 is a diagram showing a part of the air purification device according to the embodiment as viewed from below. [Figure 7] FIG. 1 is an exploded perspective view showing an electric dust collector according to an embodiment. [Figure 8] FIG. 2 is an exploded perspective view showing an electric dust collector body and a dust collecting unit cover according to the embodiment. [Figure 9] 5A to 5C are partial cross-sectional views showing a part of a procedure for attaching the dust collection section cover to the electric dust collector body in the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. Note that the scope of the present disclosure is not limited to the following embodiments and can be modified as desired within the scope of the technical concept of the present disclosure. In addition, in the following drawings, the scale and number of each structure may differ from the scale and number of the actual structure in order to make each configuration easier to understand.

[0011] The drawings also show the X-axis, Y-axis, and Z-axis as appropriate. The X-axis indicates one of the horizontal directions. The Y-axis indicates the other of the horizontal directions. The Z-axis indicates the vertical direction. In the following description, the horizontal direction along the X-axis will be referred to as the "first horizontal direction X," the horizontal direction along the Y-axis will be referred to as the "second horizontal direction Y," and the vertical direction will be referred to as the "vertical direction Z." The first horizontal direction X, the second horizontal direction Y, and the vertical direction Z are perpendicular to each other. The side of the vertical direction Z toward which the Z-axis arrow points (+Z side) is the upper side, and the side of the vertical direction Z opposite to the side toward which the Z-axis arrow points (-Z side) is the lower side.

[0012] In the following description, the side of the first horizontal direction X toward which the X-axis arrow points (+X side) will be referred to as the "first horizontal direction one side," and the side of the first horizontal direction X opposite to the side toward which the X-axis arrow points (-X side) will be referred to as the "first horizontal direction other side." In addition, the side of the second horizontal direction Y toward which the Y-axis arrow points (+Y side) will be referred to as the "second horizontal direction one side," and the side of the second horizontal direction Y opposite to the side toward which the Y-axis arrow points (-Y side) will be referred to as the "second horizontal direction other side."

[0013] In the following embodiments, the vertical direction Z corresponds to the "first direction," and the first horizontal direction X corresponds to the "second direction" that intersects with the vertical direction Z. Furthermore, the upper side corresponds to the "first side," and the lower side corresponds to the "second side."

[0014] FIG. 1 is a schematic diagram showing the general configuration of an air conditioner 100 according to the present embodiment. The air conditioner 100 is capable of conditioning indoor air by utilizing a refrigeration cycle in which a refrigerant 33 circulates. As shown in FIG. 1, the air conditioner 100 comprises an indoor unit 10, an outdoor unit 20, and a circulation path section 30. The indoor unit 10 is disposed indoors. The outdoor unit 20 is disposed outdoors. The indoor unit 10 and the outdoor unit 20 are connected to each other by the circulation path section 30 in which the refrigerant 33 circulates. The circulation path section 30 has a gas refrigerant pipe 31 and a liquid refrigerant pipe 32. The gas refrigerant pipe 31 and the liquid refrigerant pipe 32 connect the indoor unit 10 and the outdoor unit 20, respectively.

[0015] The air conditioner 100 can adjust the temperature of the indoor air by exchanging heat between the refrigerant 33 flowing in the circulation path section 30 and the air in the room where the indoor unit 10 is placed. Examples of the refrigerant 33 include fluorine-based refrigerants and hydrocarbon-based refrigerants, which have a low global warming potential (GWP).

[0016] The outdoor unit 20 has a compressor 21, a four-way valve 22, an outdoor heat exchanger 23, and an expansion valve 24. The outdoor heat exchanger 23 exchanges heat between the refrigerant 33 and outdoor air. Although not shown, the outdoor unit 20 has a blower that sends outdoor air to the outdoor heat exchanger 23.

[0017] The compressor 21 compresses and discharges the drawn refrigerant 33. Note that the amount of refrigerant 33 discharged from the compressor 21 per unit time may be changed by, for example, arbitrarily changing the frequency of the current supplied to the compressor 21 using an inverter circuit or the like.

[0018] The four-way valve 22 is provided in a portion of the circulation path section 30 that is connected to the discharge side of the compressor 21. The four-way valve 22 can reverse the direction of the refrigerant 33 flowing through the circulation path section 30 by switching a portion of the path of the circulation path section 30. When the path connected by the four-way valve 22 is the path shown by the solid line on the four-way valve 22 in Fig. 1, the refrigerant 33 flows through the circulation path section 30 in the direction shown by the solid arrow in Fig. 1. On the other hand, when the path connected by the four-way valve 22 is the path shown by the dashed line on the four-way valve 22 in Fig. 1, the refrigerant 33 flows through the circulation path section 30 in the direction shown by the dashed arrow in Fig. 1.

[0019] The expansion valve 24 reduces the pressure of the refrigerant 33 to expand it. The expansion valve 24 is, for example, an electronic expansion valve. In this case, the opening degree of the expansion valve 24 is adjusted by a control device (not shown). By adjusting the opening degree of the expansion valve 24, the flow rate of the refrigerant 33 flowing through the circulation path portion 30 is adjusted.

[0020] The indoor unit 10 has an indoor heat exchanger 11. The indoor heat exchanger 11 exchanges heat, for example, between the air in the room to be air-conditioned and the refrigerant 33. Although not shown, the indoor unit 10 has a blower that sends the air in the room to the indoor heat exchanger 11. The indoor unit 10 is capable of cooling operation to cool the air in the room where the indoor unit 10 is located, and heating operation to warm the air in the room where the indoor unit 10 is located.

[0021] When the indoor unit 10 is in cooling operation, the refrigerant 33 flowing in the circulation path section 30 flows in the direction shown by the solid arrow in Fig. 1. In other words, when the indoor unit 10 is in cooling operation, the refrigerant 33 flowing in the circulation path section 30 circulates through the compressor 21, the outdoor heat exchanger 23, the expansion valve 24, and the indoor heat exchanger 11 in that order before returning to the compressor 21. In cooling operation, the outdoor heat exchanger 23 functions as a condenser, condensing and liquefying the refrigerant 33. In cooling operation, the indoor heat exchanger 11 functions as an evaporator, evaporating and vaporizing the refrigerant 33.

[0022] On the other hand, when the indoor unit 10 is in heating operation, the refrigerant 33 flowing in the circulation path portion 30 flows in the direction shown by the dashed line in Fig. 1. In other words, when the indoor unit 10 is in heating operation, the refrigerant 33 flowing in the circulation path portion 30 circulates through the compressor 21, indoor heat exchanger 11, expansion valve 24, and outdoor heat exchanger 23 in this order before returning to the compressor 21. In heating operation, the outdoor heat exchanger 23 functions as an evaporator, evaporating and vaporizing the refrigerant 33. In heating operation, the indoor heat exchanger 11 functions as a condenser, condensing and liquefying the refrigerant 33.

[0023] Next, the indoor unit 10 of this embodiment will be described in further detail. Figure 2 is a perspective view showing the indoor unit 10. Figure 3 is an exploded perspective view showing the indoor unit 10.

[0024] As shown in Figures 2 and 3, in this embodiment, the indoor unit 10 is a ceiling-embedded indoor unit that is installed by being embedded in a ceiling. The indoor unit 10 includes an indoor unit main body 12, an air purification device 40 attached to the underside of the indoor unit main body 12, and a decorative panel 13 attached to the underside of the air purification device 40. The indoor unit main body 12 has a generally rectangular prism shape that is flattened in the vertical direction Z. The decorative panel 13 is disposed between the indoor unit main body 12 and the indoor unit main body 12 in the vertical direction Z, sandwiching the air purification device 40 therebetween. The decorative panel 13 is larger than the indoor unit main body 12 and the air purification device 40 when viewed in the vertical direction Z. The indoor unit main body 12 and the air purification device 40 are installed by being embedded in the ceiling of the room in which the indoor unit 10 is installed. The decorative panel 13 is exposed to the room in which the indoor unit 10 is installed.

[0025] The air purification device 40 is a device that removes dust from the air in a room where the indoor unit 10 is installed, and purifies the air in the room. The air purification device 40 is provided between the indoor unit main body 12 and the decorative panel 13 in the vertical direction Z. FIG. 4 is a perspective view showing the air purification device 40. As shown in FIG. 4, the air purification device 40 has a frame member 41, a support member 42, a control unit 43, and an electrostatic precipitator 50.

[0026] When viewed in the vertical direction Z, the frame member 41 has a substantially square frame shape with sides aligned with the first horizontal direction X and the second horizontal direction Y. When viewed in the vertical direction Z, the outer shape of the frame member 41 is the same as the outer shape of the indoor unit main body 12. The upper surface of the frame member 41 is fixed to the lower surface of the indoor unit main body 12.

[0027] The inside of the frame member 41 is an inlet 41a through which air from inside the room is drawn in. A plurality of outlets 41b are provided on the underside of the frame member 41. Two outlets 41b are provided on each of a pair of sides of the frame member 41 extending along the first horizontal direction X and a pair of sides extending along the second horizontal direction Y. The air drawn in from the inlet 41a is blown out from the outlets 41b toward the room. The inlet 41a and the outlet 41b open downward. A decorative panel 13 is disposed below the inlet 41a and the outlet 41b, and through-holes are provided in the decorative panel 13 in portions facing the inlet 41a and the outlet 41b to allow air to pass through.

[0028] The support member 42 is a metal plate member. The plate surface of the support member 42 faces the vertical direction Z. The support member 42 is composed of, for example, a plurality of members. When viewed in the vertical direction Z, the support member 42 has a generally rectangular shape that is long in the first horizontal direction X. The support member 42 is fixed to the frame member 41. Both end portions of the support member 42 in the first horizontal direction X are fixed to portions of the inner edge of the suction port 41a that are located on both sides in the first horizontal direction X. The support member 42 is provided with a through hole 42c that penetrates the support member 42 in the vertical direction Z.

[0029] Fig. 5 is a cross-sectional view showing a part of the air purification device 40 taken along the VV cross section of Fig. 4. Fig. 6 is a view of a part of the air purification device 40 as seen from below. As shown in Fig. 5, the support member 42 has a support wall portion 42a located on the other side (-X side) of the through-hole 42c in the first horizontal direction, and a first opposing wall portion 42b protruding upward from an end of the support wall portion 42a on one side (+X side) in the first horizontal direction. The support wall portion 42a is plate-shaped with its plate surface facing the vertical direction Z. The support wall portion 42a is provided with an engagement hole 42d penetrating the support wall portion 42a in the vertical direction Z.

[0030] The first opposing wall portion 42b protrudes upward from a portion of the inner edge of the through hole 42c that is located on the other side (-X side) in the first horizontal direction. The first opposing wall portion 42b is plate-shaped with its plate surface facing the first horizontal direction X. The first opposing wall portion 42b is arranged opposite a dust collection unit cover 80 (described later) in the first horizontal direction X that intersects with the vertical direction Z. The first opposing wall portion 42b is arranged opposite the other side of the dust collection unit cover 80 in the first horizontal direction, with a gap between them. The upper end of the first opposing wall portion 42b is located higher than the upper end of the dust collection unit cover 80 (described later).

[0031] 6, the support member 42 has a fixed wall portion 42e located on one side (+X side) of the through-hole 42c in the first horizontal direction. The fixed wall portion 42e is plate-shaped with its plate surface facing the vertical direction Z. The fixed wall portion 42e is provided with a plurality of female screw holes 42f arranged at intervals in the second horizontal direction Y.

[0032] The control unit 43 controls the electrostatic precipitator 50. As shown in Fig. 4, the control unit 43 is disposed inside the frame member 41, i.e., at the suction port 41a. The control unit 43 is fixed to the edge of the support member 42 on the other side (-Y side) in the second horizontal direction.

[0033] The electrostatic precipitator 50 is disposed inside the frame member 41, i.e., at the suction port 41a. The electrostatic precipitator 50 is fixed to the underside of the support member 42. In this embodiment, the electrostatic precipitator 50 is attached to the indoor unit body 12 via the support member 42 and the frame member 41. A plurality of electrostatic precipitators 50 is provided. In this embodiment, four electrostatic precipitators 50 are provided. The plurality of electrostatic precipitators 50 are disposed in a row along the second horizontal direction Y. Each of the plurality of electrostatic precipitators 50 extends in the first horizontal direction X. Each of the plurality of electrostatic precipitators 50 is disposed across the through hole 42c in the first horizontal direction X. The plurality of electrostatic precipitators 50 are of the same type and have similar configurations.

[0034] 7 is an exploded perspective view showing the electric precipitator 50. As shown in FIG. 7, the electric precipitator 50 has an electric precipitator main body 60, a power supply unit 70, a dust collection unit cover 80, and a fixing member 90.

[0035] The electrostatic precipitator main body 60 extends in the first horizontal direction X. The electrostatic precipitator main body 60 is disposed across the through-hole 42c in the first horizontal direction X. FIG. 8 is an exploded perspective view showing the electrostatic precipitator main body 60 and the dust collection unit cover 80. As shown in FIG. 8, the electrostatic precipitator main body 60 has a substantially rectangular parallelepiped box-shaped case 61 extending in the first horizontal direction X and a dust collection unit 62 housed in the case 61. The case 61 has a substantially rectangular parallelepiped box-shaped main body 61a, a first engagement portion 61c provided at an end of the main body 61a on the other side (-X side) in the first horizontal direction, and a second engagement portion 61g provided at an end of the main body 61a on one side (+X side) in the first horizontal direction. The end of the main body 61a on the one side in the first horizontal direction is a connected portion 61d that is fixed to the power supply unit 70.

[0036] The main body 61a has an opening 61f that opens upward. The opening 61f is located on the other side (-X side) in the first horizontal direction relative to the connected portion 61d. The opening 61f extends in the first horizontal direction X. Two openings 61f are provided side by side in the first horizontal direction X. As shown in FIG. 7, a plurality of ventilation holes 61e are provided in the wall portion on the lower side of the main body 61a. The size of the plurality of ventilation holes 61e is such that the fingers of a worker performing work on the indoor unit 10 cannot enter through them.

[0037] The first engagement portion 61c protrudes toward the other side in the first horizontal direction from an upper end of the end portion of the main body portion 61a on the other side in the first horizontal direction (-X side). The end portion of the first engagement portion 61c on the other side in the first horizontal direction is the end portion of the electric dust collector 50 on the other side in the first horizontal direction. As shown in FIG. 5 , the first engagement portion 61c is inserted into the engagement hole 42d from below and hooked from above on a portion of the upper surface of the support wall portion 42a that is located on the other side in the first horizontal direction of the engagement hole 42d. As a result, the end portion of the electric dust collector 50 on the other side in the first horizontal direction is hooked and held by the support member 42.

[0038] 8, the second engagement portion 61g protrudes toward one side in the first horizontal direction from the upper end of the end portion of the main body portion 61a on one side in the first horizontal direction (+X side). The end portion of the second engagement portion 61g on one side in the first horizontal direction is the end portion of the electric dust collector main body 60 on one side in the first horizontal direction.

[0039] Dust collection section 62 is exposed to the upper side of electrostatic precipitator main body 60 via two openings 61f. Part of the air passing through through-hole 42c can pass through dust collection section 62 in the vertical direction Z. Part of the air sucked into suction port 41a flows into the inside of case 61 through multiple ventilation holes 61e, passes through dust collection section 62 in the vertical direction Z, and is discharged to the outside of case 61 through openings 61f.

[0040] The dust collection unit 62 has a discharge unit (not shown) that generates a discharge using power from the power supply unit 70, and an electrode unit 62a that generates an electrostatic force using power from the power supply unit 70. The dust collection unit 62 charges dust in the air passing through the dust collection unit 62 by discharging the discharge unit. The dust collection unit 62 captures the dust in the air passing through the dust collection unit 62 by attaching the dust charged by the discharge to the electrode unit 62a using electrostatic force. Furthermore, the discharge generated in the discharge unit of the dust collection unit 62 can inactivate bacteria, viruses, and other contaminants contained in the air passing through the dust collection unit 62. As a result, the electrostatic precipitator 50 can purify the air passing through the dust collection unit 62. The electrode unit 62a is located above the discharge unit (not shown). The electrode unit 62a is exposed to the upper side of the case 61 through an opening 61f.

[0041] The electrostatic precipitator main body 60 has first claw portions 63. In this embodiment, the first claw portions 63 are provided on the case 61. The first claw portions 63 protrude upward from the main body portion 61a of the case 61. In this embodiment, a plurality of first claw portions 63 are provided. The plurality of first claw portions 63 include two first claw portions 63a and two first claw portions 63b.

[0042] The two first claws 63a are provided at an edge of the upper surface of the main body 61a on the other side in the second horizontal direction (-Y side) with a gap in the first horizontal direction X. The two first claws 63b are provided at an edge of the upper surface of the main body 61a on one side in the second horizontal direction (+Y side) with a gap in the first horizontal direction X. Each first claw 63a and each first claw 63b are arranged in opposing positions with the opening 61f sandwiched between them in the second horizontal direction Y. The first claws 63a and the first claws 63b have shapes symmetrical with respect to the second horizontal direction Y. Therefore, in the following description, the first claw 63a will be described as a representative, and a description of the first claw 63b may be omitted.

[0043] The first claw portion 63a has a base portion 63c and a claw main body portion 63d. The base portion 63c extends upward from the main body portion 61a of the case 61. The base portion 63c is plate-shaped with its plate surface facing the second horizontal direction Y. The claw main body portion 63d protrudes from the upper end of the base portion 63c in the second horizontal direction Y toward the side opposite to the side where the first claw portion 63b is located (the -Y side). The claw main body portion 63d is plate-shaped with its plate surface facing the vertical direction Z. As shown in FIG. 5, the claw main body portion 63d is provided in the center of the upper end of the base portion 63c in the first horizontal direction X. The dimension of the claw main body portion 63d in the first horizontal direction X is smaller than the dimension of the base portion 63c in the first horizontal direction X. The end of the lower surface of the claw main body portion 63d on the other side in the first horizontal direction (the -X side) forms an inclined surface 63g. The inclined surface 63g is positioned upward as it approaches the other side in the first horizontal direction.

[0044] Like the first claw portion 63a, the first claw portion 63b has a base portion 63c and a claw main body portion 63d. The claw main body portion 63d of the first claw portion 63b protrudes from the upper end of the base portion 63c toward the side opposite to the side where the first claw portion 63a is located (the +Y side) in the second horizontal direction Y. In other words, the claw main body portion 63d of the first claw portion 63a and the claw main body portion 63d of the first claw portion 63b protrude in directions away from each other.

[0045] 6 and 7, the power supply unit 70 is connected to an end of the electrostatic precipitator body 60 on one side in the first horizontal direction (+X side). The power supply unit 70 extends further toward the one side in the first horizontal direction than the electrostatic precipitator body 60. The end of the power supply unit 70 on one side in the first horizontal direction is the end of the electrostatic precipitator 50 on one side in the first horizontal direction. The power supply unit 70 has a power supply unit body 71 extending in the first horizontal direction X, and a connecting portion 72 protruding from the end of the power supply unit body 71 on the other side in the first horizontal direction (-X side) to the other side in the second horizontal direction (-Y side). A connected portion 61d of the electrostatic precipitator body 60 is connected to the connecting portion 72 from below.

[0046] 6, the power supply unit 70 is fixed to the fixed wall portion 42e of the support member 42 by two bolts 92, 93. The bolt 92, together with a fixing member main body 91 described below, fixes the connection portion 72 to the fixed wall portion 42e. The bolt 93 fixes the end of the power supply unit main body 71 on one side (+X side) in the first horizontal direction to the fixed wall portion 42e. The power supply unit 70 supplies power to a discharge unit (not shown) of the electrostatic precipitator main body 60 based on a signal from the control unit 43.

[0047] As shown in FIG. 8, the dust collection unit cover 80 covers the dust collection unit 62 exposed from the case 61 through the opening 61f from above. More specifically, the dust collection unit cover 80 covers the electrode unit 62a from above. The dust collection unit cover 80 has a generally rectangular parallelepiped box shape that opens downward. The dust collection unit cover 80 extends in the first horizontal direction X. As shown in FIG. 5, the dust collection unit cover 80 is inserted into the through-hole 42c of the support member 42 from below. The dust collection unit cover 80 is made of, for example, resin. As shown in FIG. 8, the dust collection unit cover 80 has a generally rectangular parallelepiped box-shaped cover main body 81 that opens downward, and second claw portions 83 that protrude from the cover main body 81.

[0048] A plurality of ventilation holes 82a are provided in a top wall portion 81a located on the upper side of the wall portions constituting the cover main body 81. The size of the plurality of ventilation holes 82a is such that the fingers of a worker performing work on the indoor unit 10 cannot fit through the ventilation holes. Air that passes through the dust collection portion 62 from the lower side to the upper side flows to the upper side of the dust collection portion cover 80 via the plurality of ventilation holes 82a. The plurality of ventilation holes 82a include a ventilation hole 82b provided in an edge portion of the cover main body 81 on the other side in the second horizontal direction (-Y side) and a ventilation hole 82c provided in an edge portion of the cover main body 81 on one side in the second horizontal direction (+Y side). The ventilation hole 82b is provided across the top wall portion 81a and a side wall portion 81b located on the other side in the second horizontal direction of the wall portions constituting the cover main body 81. The ventilation holes 82c are provided across the top wall 81a and a side wall 81c located on one side in the second horizontal direction among the wall portions constituting the cover main body 81. Two ventilation holes 82b and two ventilation holes 82c are provided at an interval in the first horizontal direction X.

[0049] 5, among the walls constituting the cover main body 81, the wall located on the other side in the first horizontal direction (-X side) is a second opposing wall 81d arranged opposite the first opposing wall 42b in the first horizontal direction X. In the present embodiment, the second opposing wall 81d is plate-shaped with its plate surface facing the first horizontal direction X. The second opposing wall 81d is arranged opposite one side in the first horizontal direction (+X side) of the first opposing wall 42b with a gap therebetween. The upper end of the second opposing wall 81d is located lower than the upper end of the first opposing wall 42b.

[0050] The second claws 83 are claws that engage with the first claws 63 from below. The second claws 83 are provided on the inner surface of the cover main body 81 facing the second horizontal direction Y. As shown in FIG. 8 , in this embodiment, a plurality of second claws 83 are provided. The plurality of second claws 83 include two second claws 83a and two second claws 83b. Each second claw 83a is provided on the inner surface of the side wall 81b, i.e., on one side (+Y side) in the second horizontal direction, at an edge portion on the other side (-X side) in the first horizontal direction of each ventilation hole 82b. Each second claw 83b is provided on the inner surface of the side wall 81c, i.e., on the other side (-Y side) in the second horizontal direction, at an edge portion on the other side (-Y side) in the first horizontal direction of each ventilation hole 82c. The second claws 83a and 83b protrude in the second horizontal direction Y from the inner surfaces of the side walls 81b and 81c, respectively.

[0051] As shown in FIG. 5, the second claw portion 83a has a base portion 83c and a claw main body portion 83d. The base portion 83c extends in the vertical direction Z. The base portion 83c is plate-shaped with its plate surface facing the first horizontal direction X. The base portion 83c is located on the side closer to the second opposing wall portion 81d with respect to the claw main body portion 63d of the first claw portion 63a, i.e., on the other side (-X side) in the first horizontal direction. In other words, the base portion 83c is located on the side (-X side) where the second opposing wall portion 81d is located with respect to the first claw portion 63a in the first horizontal direction X. The lower end portion of the base portion 83c is located lower than the claw main body portion 63d of the first claw portion 63a.

[0052] The claw main body 83d protrudes from the lower end of the base 83c toward the side opposite to the side where the second opposing wall 81d is located, i.e., toward one side in the first horizontal direction (+X side). The claw main body 83d engages with the claw main body 63d of the first claw portion 63a from below. As a result, the two second claw portions 83a engage with the two first claw portions 63a from below. The claw main body 83d of the second claw portion 83a is inserted below the claw main body 63d of the first claw portion 63a from the side where the second opposing wall 81d is located in the first horizontal direction X (-X side) and engages with the claw main body 63d from below. In other words, the second claw portion 83a is inserted below the first claw portion 63a from the side where the second opposing wall 81d is located in the first horizontal direction X and engages with the first claw portion 63a. The end of the upper surface of the hook main body 83d on one side in the first horizontal direction (+X side) is an inclined surface 83g. The inclined surface 83g is positioned downward as it approaches one side in the first horizontal direction.

[0053] A distance L2 in the first horizontal direction X between the first opposing wall portion 42b of the support member 42 and the second opposing wall portion 81d of the dust-collection unit cover 80 is smaller than an engagement width L1 in the first horizontal direction X between the first claw portion 63a and the second claw portion 83a. The engagement width L1 is the dimension in the first horizontal direction X of the portion where the claw main body portion 63d of the first claw portion 63a and the claw main body portion 83d of the second claw portion 83a overlap, as viewed in the vertical direction Z.

[0054] The second claws 83b are similar to the second claws 83a, except that they are provided on the side wall 81c. Similar to the two second claws 83a, the two second claws 83b engage with the two first claws 63b from below, respectively.

[0055] The first claws 63a, 63b and the second claws 83a, 83b engage with each other, thereby engaging and attaching the dust collection section cover 80 to the electric dust collector body 60. The dust collection section cover 80 is slidable in the first horizontal direction X relative to the electric dust collector body 60.

[0056] 6 and 7, the fixing member 90 fixes the end of the electric precipitator body 60 on one side (+X side) in the first horizontal direction to the power supply unit 70, thereby fixing the electric precipitator body 60 to the support member 42. In other words, the electric precipitator body 60 is fixed to the support member 42 by the fixing member 90 at a portion of the electric precipitator body 60 opposite the side (-X side) on which the first opposing wall portion 42b is located with respect to the second opposing wall portion 81d. The fixing member 90 fixes the electric precipitator body 60 to the support member 42 from below.

[0057] The fixing member 90 includes a fixing member main body 91 and a bolt 92. The fixing member main body 91 is made of, for example, resin. The fixing member main body 91 is fixed to the connection portion 72 of the power supply unit 70 from below with the bolt 92. The fixing member main body 91 has an elongated hole 91a through which the bolt 92 is passed. The elongated hole 91a extends in the first horizontal direction X. The fixing member main body 91 has a pressing portion 91b that protrudes toward the other side (-X side) in the first horizontal direction. As shown in FIG. 6 , the pressing portion 91b presses the second engagement portion 61g of the electric dust collector main body 60 from below. In other words, the second engagement portion 61g engages with the pressing portion 91b from above. As a result, the end of the electric dust collector main body 60 on one side (+X side) in the first horizontal direction is fixed to the support member 42 via the fixing member main body 91. In this way, the fixing member main body 91 presses and fixes the electric dust collector main body 60 to the power supply unit 70 from below.

[0058] The bolt 92 is passed from below through an elongated hole 91a provided in the fixing member main body 91, passes through the connection portion 72 of the power supply unit 70 in the vertical direction Z, and is fastened into an internally threaded hole 42f provided in the fixing wall portion 42e of the support member 42. In this way, the bolt 92 fixes the fixing member main body 91 to the power supply unit 70, and also fixes the fixing member main body 91 and the power supply unit 70 to the support member 42.

[0059] With the bolt 92 loosened, the fixing member body 91 is movable in the first horizontal direction X within the range in which the bolt 92 can move relative to the oblong hole 91a. When the bolt 92 is loosened and the fixing member body 91 is moved to one side in the first horizontal direction (the +X side) from the position shown in FIG. 6, the pressing portion 91b disengages from the second engagement portion 61g. This makes it possible to remove the electric dust collector body 60 from the support member 42. In this way, in this embodiment, each electric dust collector body 60 of the multiple electric dust collectors 50 is individually and detachably attached to the support member 42.

[0060] 9 is a partial cross-sectional view showing a part of the procedure for attaching the dust collecting section cover 80 to the electrostatic precipitator main body 60. As shown in FIG. 9, when the electrostatic precipitator 50 is not attached to the support member 42, the worker attaching the dust collecting section cover 80 places the dust collecting section cover 80 over the upper side of the electrostatic precipitator main body 60 and slides it to one side (+X side) in the first horizontal direction. As a result, the claw main body portions 83d of each second claw portion 83 are inserted into the lower sides of the claw main body portions 63d of each first claw portion 63, and each second claw portion 83 is engaged with each first claw portion 63. As a result, the dust collecting section cover 80 is attached to the electrostatic precipitator main body 60.

[0061] When the blower (not shown) of the indoor unit 10 is driven, indoor air is drawn into the intake port 41a from below. The air drawn into the intake port 41a passes through the air purification device 40 and is drawn into the interior of the indoor unit body 12. The air drawn into the interior of the indoor unit body 12 passes through the indoor heat exchanger 11 and is discharged to the outside of the indoor unit body 12 and is blown out into the room from the outlet port 41b. Here, the air drawn in through the intake port 41a passes through the electrostatic precipitator 50 of the air purification device 40, and after dust has been removed and purified, is blown out into the room from the outlet port 41b. Therefore, by continuing to operate the blower of the indoor unit 10, the air in the room can be purified.

[0062] According to this embodiment, the electrostatic precipitator 50 includes an electrostatic precipitator main body 60 having a dust collecting unit 62, and a dust collecting unit cover 80 that covers the dust collecting unit 62 from above in the vertical direction Z. The electrostatic precipitator main body 60 has first claws 63. The support member 42 to which the electrostatic precipitator 50 is fixed has a first opposing wall 42b disposed opposite the dust collecting unit cover 80 in a first horizontal direction X that intersects with the vertical direction Z. The dust collecting unit cover 80 has second claws 83 that engage with the first claws 63 from below, opposite the above, and a second opposing wall 81d disposed opposite the first opposing wall 42b in the first horizontal direction X. The second claws 83 are inserted below the first claws 63 from the side where the second opposing wall 81d is located in the first horizontal direction X, and are engaged with the first claws 63. A distance L2 in the first horizontal direction X between the first opposing wall portion 42b and the second opposing wall portion 81d is smaller than an engagement width L1 in the first horizontal direction X between the first claw portion 63 and the second claw portion 83.

[0063] Therefore, even if the dust collection unit cover 80 is moved in a direction (-X direction) toward the first opposing wall portion 42b relative to the electrostatic precipitator main body 60, the second opposing wall portion 81d comes into contact with the first opposing wall portion 42b before the first claw portions 63 and the second claw portions 83 disengage. Therefore, the movement of the dust collection unit cover 80 is blocked by the first opposing wall portion 42b, and the disengagement between the first claw portions 63 and the second claw portions 83 is inhibited. This prevents the dust collection unit cover 80 from coming off the electrostatic precipitator main body 60 when the electrostatic precipitator 50 is fixed to the support member 42. Therefore, the dust collection unit cover 80, which covers the dust collection unit 62 of the electrostatic precipitator 50, from accidentally coming off when performing maintenance work such as cleaning the electrostatic precipitator 50. Therefore, the dust collection unit cover 80 can effectively prevent an operator from touching the dust collection unit 62 when the electrostatic precipitator main body 60 is connected to the power supply unit 70.

[0064] After the electrostatic precipitator body 60 has been removed from the support member 42, the engagement between the first claws 63 and the second claws 83 can be easily released by sliding the dust collection unit cover 80 toward the other side in the first horizontal direction (the -X side) relative to the electrostatic precipitator body 60 in the reverse order of the procedure shown in Fig. 9. Therefore, after the electrostatic precipitator body 60 has been removed from the support member 42, the dust collection unit cover 80 can be easily removed from the electrostatic precipitator body 60. By removing the dust collection unit cover 80, the worker can easily remove dust adhering to the electrode portion 62a of the dust collection unit 62 exposed through the opening 61f.

[0065] Furthermore, according to this embodiment, the second claw portion 83 has a base portion 83c arranged on the side of the first claw portion 63 where the second opposing wall portion 81d is located in the first horizontal direction X, and a claw main body portion 83d protruding from the base portion 83c and engaged with the first claw portion 63. Therefore, even if an attempt is made to move the dust collection unit cover 80 in a direction away from the first opposing wall portion 42b (+X direction) relative to the electrostatic precipitator body 60, the base portion 83c gets caught on the first claw portion 63, and movement of the dust collection unit cover 80 is hindered. This further prevents the engagement between the first claw portion 63 and the second claw portion 83 from being released. Therefore, it is possible to further prevent the dust collection unit cover 80 from being accidentally removed.

[0066] Furthermore, according to this embodiment, the electric dust collector body 60 is detachably fixed to the support member 42 by the fixing members 90. Therefore, the structure is such that the electric dust collector body 60 cannot be removed without using a tool to release the fixation by the fixing members 90. This makes it possible to preferably prevent the electric dust collector body 60 from being unintentionally detached. On the other hand, if the fixation by the fixing members 90 is released using a tool, the electric dust collector body 60 can be easily removed.

[0067] Specifically, in this embodiment, the fixing member 90 includes a fixing member main body 91 that presses and fixes the electrostatic precipitator main body 60 to the power supply unit 70 from below, and a bolt 92 that fixes the fixing member main body 91 to the power supply unit 70. Therefore, the electrostatic precipitator main body 60 can be easily removed by loosening the bolt 92 with a tool such as a screwdriver to release the pressure exerted by the fixing member main body 91. In this embodiment, the electrostatic precipitator main body 60 can be easily removed from the support member 42 by sliding the fixing member main body 91 after loosening the bolt 92. In particular, in this embodiment, the end of the electrostatic precipitator main body 60 opposite the end fixed by the fixing member 90 is not fixed by a bolt or the like, but is instead hooked into the engagement hole 42d and held to the support member 42. Therefore, once the fixation by the fixing member 90 is released with a tool, the electrostatic precipitator main body 60 can be easily removed manually.

[0068] Furthermore, according to this embodiment, the electric dust collector body 60 is fixed to the support member 42 by the fixing member 90 at a portion of the electric dust collector body 60 opposite the side where the first opposing wall portion 42b is located with respect to the second opposing wall portion 81d. Therefore, the portion of the electric dust collector body 60 on the side where the second opposing wall portion 81d is located can be first supported by the support member 42, and then the electric dust collector body 60 can be fixed by the fixing member 90 in a state where the second opposing wall portion 81d is opposed to the first opposing wall portion 42b. This makes it possible to suitably prevent the dust collector cover 80 from coming off the electric dust collector body 60 when fixing the electric dust collector body 60 to the support member 42.

[0069] Furthermore, according to this embodiment, the fixing member 90 fixes the electric precipitator body 60 to the support member 42 from below. That is, the electric precipitator body 60 is fixed by the fixing member 90 from the side opposite to the side where the dust collection unit cover 80 covers the dust collection unit 62 of the electric precipitator body 60. This makes it easy to fix the electric precipitator body 60 with the fixing member 90 while the second opposing wall portion 81d of the dust collection unit cover 80 faces the first opposing wall portion 42b. Furthermore, when releasing the electric precipitator body 60 fixed by the fixing member 90, it is possible to prevent an operator from touching the dust collection unit cover 80. This prevents an operator from unintentionally impacting the dust collection unit cover 80 when removing the electric precipitator body 60, and thus prevents damage such as breaking of at least one of the first claw portion 63 and the second claw portion 83. Furthermore, even if the dust collection section cover 80 has come off the electric dust collector body 60, the worker can be prevented from touching the dust collection section 62 when removing the electric dust collector body 60.

[0070] Furthermore, according to the present embodiment, a plurality of first claws 63 and a plurality of second claws 83 are provided. Therefore, the dust collecting section cover 80 can be attached to the electric dust collector body 60 more stably.

[0071] Although the embodiments of the present disclosure have been described above, the present disclosure is not limited to the configurations of the above-described embodiments, and the following configurations and methods may also be adopted.

[0072] The number of electric precipitators is not particularly limited. The electric precipitator may be any type of electric precipitator. The electric precipitator body may be fixed to the support member in any manner. The first claw portion and the second claw portion may have any shape as long as they can engage with each other in the first direction. The first direction is not particularly limited and may be a direction other than the vertical direction. The second direction is not particularly limited as long as it is a direction intersecting the first direction. The number of first claw portions and the number of second claw portions are not particularly limited. The indoor unit of the present disclosure may be applied to any type of indoor unit.

[0073] The configurations and methods described in this specification can be combined as appropriate within the scope of not contradicting each other. [Explanation of symbols]

[0074] 10... Indoor unit, 20... Outdoor unit, 42... Support member, 42b... First opposing wall portion, 50... Electrostatic precipitator, 60... Electrostatic precipitator body, 62... Dust collection unit, 63, 63a, 63b... First claw portion, 83c... Base portion, 83d... Claw body portion, 70... Power supply unit, 80... Dust collection unit cover, 81d... Second opposing wall portion, 83, 83a, 83b... Second claw portion, 90... Fixing member, 91... Fixing member body, 92... Bolt, 100... Air conditioner, L1... Engagement width, L2... Distance, X... First horizontal direction (second direction), Z... Vertical direction (first direction)

Claims

1. An indoor unit of an air conditioner, An electrostatic precipitator, a support member to which the electrostatic precipitator is fixed; Equipped with The electrostatic precipitator comprises: an electric dust collector body having a dust collecting section; a dust collection unit cover that covers the dust collection unit from a first side in a first direction; and The electric dust collector body has a first claw portion, the support member has a first opposing wall portion disposed opposite the dust collection unit cover in a second direction intersecting the first direction, The dust collection unit cover is a second claw portion that engages with the first claw portion from a second side opposite to the first side; a second opposing wall portion disposed opposite the first opposing wall portion in the second direction; and the second claw portion is inserted into the second side of the first claw portion from a side where the second opposing wall portion is located in the second direction and engaged with the first claw portion, an indoor unit, wherein a distance in the second direction between the first opposing wall portion and the second opposing wall portion is smaller than an engagement width in the second direction between the first claw portion and the second claw portion.

2. The second claw portion is a base portion disposed on a side of the first claw portion where the second opposing wall portion is located in the second direction; a claw body portion protruding from the base portion and engaged with the first claw portion; The indoor unit according to claim 1 ,

3. The indoor unit according to claim 1 or 2, wherein the electric dust collector body is detachably fixed to the support member by a fixing member.

4. the electric dust collector has a power supply unit fixed to the support member, The fixing member is a fixing member main body that presses and fixes the electric dust collector main body to the power supply unit from the second side; a bolt for fixing the fixing member body to the power supply unit; The indoor unit according to claim 3 ,

5. 5. The indoor unit according to claim 3, wherein the electric dust collector body is fixed to the support member by the fixing member at a portion of the second opposing wall portion opposite to a side on which the first opposing wall portion is located.

6. The indoor unit according to claim 3 , wherein the fixing member fixes the electric dust collector body to the support member from the second side.

7. The indoor unit according to claim 1 , wherein a plurality of the first claws and a plurality of the second claws are provided.

8. An indoor unit according to any one of claims 1 to 7; The outdoor unit and An air conditioner comprising:

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