JP3894174B2 - Air conditioner electrical component box and air conditioner - Google Patents

Description

  The present invention relates to an electrical component box of an air conditioner and an air conditioner.

In general, an electrical component box of an air conditioner often has a control board on which control parts for controlling the air conditioner are mounted. The control board is not limited to a single board, and a plurality of control boards may be provided. For example, two control boards are provided in an electrical component box, one control board is disposed in parallel to the upper surface of the electrical component box, and the other control board is disposed in parallel to the rear surface of the electrical component box (Patent Literature). 1).
Japanese Patent Laid-Open No. 11-63574

  However, in such an electrical component box of an air conditioner including a plurality of control boards, it may be difficult to attach the control board to the electrical equipment box body. That is, there is a case where the control board to be attached first and the fixing structure thereof prevent the control board to be attached later from being attached.

  In addition, although it is desirable that the electrical component box of the air conditioner be downsized, it may be difficult to downsize the electrical component box depending on the arrangement of a plurality of control boards.

  An object of the present invention is to provide an electrical component box and an air conditioner of an air conditioner that can be easily attached to a control board and can be downsized.

An electrical component box for an air conditioner according to a first aspect includes an electrical component box body, a first control board, and a second control board. The electrical component box body is integrally molded and provided with an opening. The first control board is mounted in the electrical component box body through the opening and in parallel with the edge of the opening . The second control board is attached between the first control board and the opening through the opening substantially parallel to the first control board, and is larger than the first control board when viewed from the mounting direction of the first control board. Has a shape. The electrical component box body includes a first part that covers the periphery of the edge of the first control board and a second part that covers the periphery of the edge of the second control board and is located between the opening and the first part. Projecting from the inner wall of the first part and engaging with the edge of the first control board to fix the first control board, and projecting from the inner wall of the second part to the edge of the second control board. A second fixing portion that stops and fixes the second control board. The first fixing part and the second fixing part are arranged so as not to overlap each other when viewed from the opening.

  In the electrical component box of this air conditioner, the first control board and the second control board are attached in parallel, so that it is easy to place the first control board and the second control board close to each other, and the size is small. Is possible. In addition, the second control board having a larger shape when viewed from the mounting direction among the first control board and the second control board is located closer to the opening than the first control board. Therefore, compared with the case where the second control board having a large shape is located on the opposite side of the opening from the first control board, the first control board and the fixing structure thereof may hinder the mounting of the second control board. Less is. Thereby, in the electrical component box of the air conditioner, the control board can be easily attached and the size can be reduced.

In addition, a second fixing portion that locks the second control board is provided in the second portion that is located on the opening side of the first portion that covers the periphery of the edge of the first control board. The second control board has a larger shape than the first control board. Therefore, the first control board is relatively small compared to the shape of the second part. For this reason, when the first control board is attached through the opening and the second part, the second fixing part protruding from the inner wall of the second part is less likely to obstruct the attachment of the first control part.

The electrical component box main body has a shape in which the relatively large second part is located on the opening side and the relatively small first part is located on the opposite side of the opening with respect to the second part. . Therefore, it is possible to form the electrical component body using a relatively simple mold during integral molding.

  Further, the first fixing part protruding from the inner wall of the first part and the second fixing part protruding from the inner wall of the second part are arranged so as not to overlap each other when viewed from the opening. For this reason, it is easy to form the first fixing portion and the second fixing portion when the electrical component box body is integrally formed.

  An electrical component box for an air conditioner according to claim 2 is the electrical component box for an air conditioner according to claim 1, wherein the first control board and the second control board are first viewed from the mounting direction. The entire control board is arranged so as to overlap the second control board.

  In the electrical component box of the air conditioner, the entire first control board is disposed so as to overlap the second control board when viewed from the mounting direction. For this reason, there is less possibility that the first control board and the fixing structure thereof may hinder the attachment of the second control board. Thereby, in the outdoor unit of this air conditioner, the control board can be easily attached and can be downsized.

  The electrical component box of the air conditioner according to claim 3 is the electrical component box of the air conditioner according to claim 1 or 2, wherein the second fixing portion is formed on the first control board as viewed from the mounting direction. It is formed so as not to overlap the edge.

  In the electrical component box of this air conditioner, the second fixed portion is formed so as not to overlap the edge of the first control board as viewed from the mounting direction. For this reason, in this electrical component box of the air conditioner, the possibility that the second fixing portion hinders the attachment of the first control board is further reduced.

  The electrical component box for an air conditioner according to claim 4 is the electrical component box for an air conditioner according to any one of claims 1 to 3, wherein the first part is located at an edge of the first control board. Proximity and the second part are close to the edge of the second control board.

  In the electrical component box of the air conditioner, the first part and the second part are close to the edge of the first control board and the edge of the second control board, respectively. Therefore, the first part and the second part have shapes that match the shape of each control board, and the electrical component box can be further downsized.

  An electrical component box for an air conditioner according to claim 5 is the electrical component box for an air conditioner according to any one of claims 1 to 4, wherein the first control board and the second control board are non- The mounting surfaces are arranged to face each other.

  In the electrical component box of this air conditioner, the first control board and the second control board are arranged with their non-mounting surfaces facing each other, so the first control board and the second control board are arranged closer to each other. Is possible. For this reason, the electrical component box of the air conditioner can be further downsized.

  An air conditioner according to a sixth aspect includes an indoor unit and an outdoor unit having the electrical component box according to any one of the first to fifth aspects.

  In this air conditioner, since the first control board and the second control board are attached in parallel in the electrical component box, the electrical component box can be reduced in size. In addition, the second control board having a larger shape when viewed from the mounting direction among the first control board and the second control board is located closer to the opening than the first control board. Therefore, compared with the case where the second control board having a large shape is located on the opposite side of the opening from the first control board, the first control board and the fixing structure thereof may hinder the mounting of the second control board. Less is. Thereby, in this air conditioner, the mounting of the control board in the electrical component box is easy, and the electrical component box can be downsized.

  In the electrical component box of the air conditioner according to the first aspect, the control board can be easily attached and can be downsized.

  In the electrical equipment box of the air conditioner according to claim 2, since the first control board and its fixing structure are less likely to interfere with the mounting of the second control board, in the outdoor unit of this air conditioner, The control board can be easily attached and can be downsized.

  In the electrical component box of the air conditioner according to claim 3, the possibility that the second fixing portion hinders the attachment of the first control board is further reduced.

  In the electrical equipment box of the air conditioner according to claim 4, the first part and the second part have a shape that matches the shape of each control board, and the electrical equipment box can be further downsized. It is.

  In the electrical component box of the air conditioner according to the fifth aspect, since the first control board and the second control board can be arranged close to each other, the size can be further reduced.

  In the air conditioner according to the sixth aspect, the control board can be easily attached to the electrical component box, and the electrical component box can be downsized.

<Overall configuration of air conditioner>
FIG. 1 shows the appearance of an air conditioner 1 in which an embodiment of the present invention is adopted.

  The air conditioner 1 includes an indoor unit 2 attached to an indoor wall surface and the like, and an outdoor unit 3 installed outside the room.

An indoor heat exchanger 70 is accommodated in the indoor unit 2, and an outdoor heat exchanger 30 is accommodated in the outdoor unit 3, and each heat exchanger 30, 70 is connected by the refrigerant pipe 4 to thereby generate a refrigerant. The circuit is configured (see Fig. 2)
<Outline of configuration of refrigerant circuit of air conditioner>
The structure of the refrigerant circuit of the air conditioner 1 is shown in FIG. This refrigerant circuit mainly includes an indoor heat exchanger 70, an accumulator 31, a compressor 32, a four-way switching valve 33, an outdoor heat exchanger 30, and an electric expansion valve 34.

  The indoor heat exchanger 70 provided in the indoor unit 2 exchanges heat with the air that comes into contact therewith. Further, the indoor unit 2 is provided with a cross flow fan 71 for sucking indoor air, passing the air through the indoor heat exchanger 70, and discharging the air after being exchanged into the room. The cross flow fan 71 is formed in a long and thin cylindrical shape, and is arranged so that the central axis is parallel to the horizontal direction. The cross flow fan 71 is rotationally driven by an indoor fan motor 72 provided in the indoor unit 2.

  The outdoor unit 3 is connected to a compressor 32, a four-way switching valve 33 connected to the discharge side of the compressor 32, an accumulator 31 connected to the suction side of the compressor 32, and a four-way switching valve 33. An outdoor heat exchanger 30 and an electric expansion valve 34 connected to the outdoor heat exchanger 30 are provided. The electric expansion valve 34 is connected to the pipe 41 via the filter 35 and the liquid closing valve 36, and is connected to one end of the indoor heat exchanger 70 via the pipe 41. The four-way switching valve 33 is connected to the pipe 42 through the gas closing valve 37 and is connected to the other end of the indoor heat exchanger 70 through the pipe 42. The pipes 41 and 42 correspond to the refrigerant pipe 4 in FIG. Further, the outdoor unit 3 is provided with a blower fan 38 for discharging the air after heat exchange in the outdoor heat exchanger 30 to the outside. The blower fan 38 is rotationally driven by a fan motor 39.

  Hereinafter, the configuration of the outdoor unit will be described in detail.

<Configuration of outdoor unit>
As shown in FIG. 3, the outdoor unit 3 includes an outdoor unit casing 5 (see FIG. 1), a compressor 32, a four-way switching valve 33, an electric expansion valve 34 (see FIG. 2), closing valves 36 and 37, and a reactor 40. , An electrical component box 43, an outdoor heat exchanger 30, a blower fan 38, a fan motor 39, a fan motor base 44, a bell mouth 45, and the like.

  The outdoor unit casing 5 mainly includes a top plate 50, a bottom plate 51, a front plate 52, a left side plate 53, a right side plate 54, a closing valve cover 55, and a partition plate 56.

  The top plate 50 is disposed on the upper surface of the outdoor unit 3 and covers the upper surface of the internal space of the outdoor unit 3. The top plate 50 is made of sheet metal. Further, the edge of the top plate 50 is bent downward in the vertical direction, and a screw as a fixing means for fixing the front plate assembly 6 to be described later is attached to the top plate front portion 58 located on the front side among the bent portions. A hole is provided.

  The bottom plate 51 is disposed on the lower surface of the outdoor unit 3 and covers the lower part of the internal space of the outdoor unit 3. The bottom plate 51 is made of sheet metal. Further, the edge of the bottom plate 51 is bent upward in the vertical direction, and a screw hole is provided as a fixing means for fixing the front plate assembly 6 in the bottom plate front portion 57 located on the front side among the bent portions. It has been.

  The front plate 52 is made of a resin such as polypropylene and is provided on the front surface of the outdoor unit 3. The front plate 52 is disposed on the front side of the bell mouth 45 and the fan motor base 44, and the front plate 52, the fan motor base 44, the fan motor 39, the bell mouth 45, and the blower fan 38 are modularized. An assembly 6 is formed. Screw holes are provided in the upper end and the lower end of the front plate 52. When the front plate assembly 6 is fixed to the outdoor unit 3, the screw holes in the front plate 52, the top plate front portion 58, and the bottom plate are provided. A screw is passed through a screw hole provided in the front portion 57, and the front plate 52, the top plate 50, and the front plate 52 and the bottom plate 51 are screwed together. The front plate 52 is provided with a plurality of slit-shaped blowout holes 59. The air flow generated by the blower fan 38 and sucked into the ventilation chamber from the back surface of the outdoor unit 3 is discharged to the outside of the outdoor unit 3 through the blowout hole 59. Also, a circular solid portion 61 without the blow hole 59 is provided near the center of the portion where the blow hole 59 is provided, and this solid portion 61 overlaps the fan motor 39 in a front view. Placed in position.

  The left side plate 53 is disposed on the left side surface of the outdoor unit 3 and covers the left side of the internal space of the outdoor unit 3. The left side plate 53 is formed of sheet metal.

  The right side plate 54 covers the right side of the internal space of the outdoor unit 3. The right side plate 54 is made of sheet metal. Further, a resin-made closing valve cover 55 is attached to the right side of the right side plate 54, that is, on the outer side.

  The partition plate 56 is provided perpendicular to the bottom plate 51. The partition plate 56 has a shape bent in a substantially L shape when viewed from above, and includes a first partition portion 56a substantially parallel to the front-rear direction of the outdoor unit 3, and a right side plate from the rear end of the first partition portion 56a. And a second partitioning portion 56 b extending toward 54. The first partition 56 a is a flat plate member that extends from the front surface to the back surface of the outdoor unit 3. As shown in FIG. 4, the front end of the first partition 56 a reaches the front surface of the outdoor unit 3, but the rear end does not reach the back surface of the outdoor unit 3 and is positioned in front of the back surface. The second partition portion 56b is a flat plate-like member that continuously extends from the rear end of the first partition portion 56a toward the right side plate 54. The second partition portion 56b is located in front of the back surface of the outdoor unit 3, and the left end thereof is continuous with the rear end of the first partition portion 56a, and the right end thereof reaches the rear portion of the right plate 54. . The partition plate 56 partitions the interior of the outdoor unit casing 5 into a machine room S1 and a ventilation room S2. The machine room S <b> 1 is a space surrounded by the partition plate 56, the right side plate 54, and a part of the right side of the front plate 52, and intrusion of rain and wind is suppressed. Therefore, as shown in FIGS. 4 and 5, the machine room S1 accommodates many machine parts that need to be protected from wind and rain such as the electrical component box 43 and the compressor 32. The other space of the outdoor unit casing 5 is a ventilation chamber S2 through which air taken in from the outside of the outdoor unit 3 and discharged to the outside through the outdoor heat exchanger 30 passes. As shown in FIG. 6, the ventilation chamber S2 has a first space S3 and a second space S4. From the first space S3 on the side of the machine room S1 to the second space S4 behind the machine room S1. It is provided over. The first space S3 is located on the left side of the first partition part 56a, and is surrounded by the front and back surfaces of the outdoor unit 3, the left side plate 53, and the first partition part 56a. The second space S4 is located behind the second partition 56b, and is surrounded by the second partition 56b, the back surface of the outdoor unit 3, and the right side plate 54. In addition, a heat radiating fin projecting hole 56c including an opening communicating from the machine chamber S1 to the second space S4 of the ventilation chamber S2 is provided on the upper portion of the second partition portion 56b (see FIG. 3).

  FIG. 4 is a schematic perspective view showing a part of the configuration of the outdoor unit 3. FIG. 5 is a front view showing a part of the configuration of the outdoor unit 3. FIG. 6 is a top view illustrating a part of the configuration of the outdoor unit 3. In FIG. 4, FIG. 5, and FIG. 6, some components are omitted for easy understanding.

  The compressor 32 is disposed in the machine room S <b> 1 and is fixed to the bottom plate 51. The four-way switching valve 33 is disposed on the side of the compressor 32. The electric expansion valve 34 (see FIG. 2) is disposed in the machine room S <b> 1 similarly to the compressor 32, and is disposed on the side of the compressor 32. The closing valves 36 and 37 are disposed below the right side plate 54. The reactor 40 is disposed on the side wall of the first partition 56a on the machine room S1 side.

  The electrical component box 43 is disposed in the upper part of the machine room S1. The electrical component box 43 includes a control circuit such as a microcomputer chip for controlling various devices, a memory for storing a control program, and other control components. The compressor 32, the four-way switching valve 33, The electric expansion valve 34 and the reactor 40 are connected by a harness or the like. The electrical component box 43 will be described in detail later.

  The outdoor heat exchanger 30 is disposed in the ventilation chamber S2 and exchanges heat with the air passing therethrough. The outdoor heat exchanger 30 is provided along the back surface and the left side plate 53 of the outdoor unit 3, and includes a first heat exchange unit 30 a substantially parallel to the back surface and a second heat exchange unit 30 b parallel to the left side plate 53. It has a substantially L-shaped shape. As shown in FIG. 6, the first heat exchanging part 30a is located in the rear space of the blower fan 38 in the first space S3 and the second space S4, and the right end of the first heat exchanging part 30a is the machine room. It reaches the vicinity of the right side plate 54 behind S1. That is, the 1st heat exchange part 30a is arrange | positioned over 1st space S3 and 2nd space S4. The second heat exchanging unit 30 b is located on the left side of the blower fan 38 in the first space S <b> 3 and is disposed in the vicinity of the left side plate 53.

  The blower fan 38 is a propeller fan having a plurality of wings, and is disposed in the first space S3 of the ventilation chamber S2. The blower fan 38 is located on the downstream side of the outdoor heat exchanger 30 in the first space S3 of the ventilation chamber S2, and is located in front of the first heat exchange unit 30a. As shown in FIG. 5, the blower fan 38 is disposed substantially at the center of the first space S3 of the ventilation chamber S2 and is located on the left side of the first partitioning portion 56a in the front view. Further, as shown in FIG. 4, a fan motor housing portion 62 is provided at the center of the blower fan 38. The fan motor housing portion 62 has a hollow cylindrical shape with one bottom surface opened. When the blower fan 38 is housed in the outdoor unit 3, the fan motor housing portion 62 is disposed so that the opening faces the front side, that is, the downstream side. Is done. A fan motor 39 is inserted and housed in the fan motor housing portion 62 from the front side. The blower fan 38 is fixed to the rotation shaft of the fan motor 39 and is driven to rotate about an axis parallel to the front-rear direction by the fan motor 39. The air flow generated by the blower fan 38 is taken into the ventilation chamber S2 from the back side of the outdoor unit 3, passes through the outdoor heat exchanger 30, the bell mouth 45, and the blowout holes 59 of the front plate 52, and then the outdoor unit 3. It is discharged outside.

  The bell mouth 45 is made of a resin such as polypropylene, and forms an air path that guides an air flow generated by the blower fan 38 and blown out of the room. The bell mouth 45 is fixed to the inner surface of the front plate 52 along the inner surface of the front plate 52 and is disposed so as to cover the periphery of the blower fan 38. The air flow generated by the blower fan 38 is taken from the outside through the back side of the outdoor unit 3 into the ventilation chamber S2, passes through the outdoor heat exchanger 30, passes through the opening of the bell mouth 45, and the blowout hole 59 of the front plate 52. It blows out to the exterior of the outdoor unit 3 through.

  The fan motor 39 is attached to the blower fan 38 from the front side. The fan motor 39 is disposed such that the rotation shaft is positioned in parallel with the front-rear direction of the outdoor unit 3. The rotation axis of the fan motor 39 is fixed to the rotation center of the blower fan 38, and the fan motor 39 rotates the blower fan 38.

  The fan motor base 44 is a member that supports the fan motor 39 to which the fan motor 39 is fixed, and is made of sheet metal. As shown in FIGS. 5 and 6, the fan motor base 44 is arranged on the front side of the blower fan 38, and is arranged on the front side of the fan motor 39 and on the front side of the bell mouth 45. The fan motor base 44 is disposed along the inner surface of the front plate 52 and is fixed to the inner surface of the front plate 52. Therefore, the fan motor base 44 is positioned with reference to the front plate 52. Further, the fan motor base 44 is positioned between the front plate 52 and the bell mouth 45 and inscribed in the front plate 52 and the bell mouth 45 in a state where the front plate assembly 6 is assembled.

<Configuration of electrical component box>
The electrical component box 43 is accommodated in the upper part of the machine room S1, as shown in FIGS. As shown in FIG. 7, the electrical component box 43 includes an electrical component box main body 81, a control board 82, and heat radiation fins 83.

[Electrical component box body]
The electrical component box main body 81 accommodates the control board 82 therein. The electrical component box body 81 has a box-like shape integrally molded from a resin material having elasticity, and a first opening 84 is provided on the front surface. The “front surface” in the description of the configuration of the electrical component box refers to the surface of the electrical component box body 81 located on the front side of the outdoor unit 3 in a state where the electrical component box 43 is attached to the machine room S1. The first opening 84 is provided over the entire front surface of the electrical component box body 81, and the control board 82 is attached to the inside of the electrical component box body 81 through the first opening 84. Moreover, the back part of the electrical component box main body 81 has a shape in which a part is raised rearward. That is, as shown in FIG. 8, the electrical component box body 81 has a shape that matches the shape of the first control board 85 and the second control board 86 housed therein, 2 parts 88. The first part 87 is a part that accommodates the first control board 85 therein, and is a part that protrudes rearwardly located on the back side of the electrical component box body 81. The second part 88 is a part that accommodates the second control board 86 therein, and is located between the first opening 84 and the first part 87 and is adjacent to the first opening 84. The “back side” here is the opposite side of the first opening 84 of the electrical component box body 81 and the back side of the electrical component box body 81. The first portion 87 is formed in a shape smaller than the second portion 88 when viewed from the first opening 84. Further, as shown in FIG. 7, a second opening 89 is provided on the back surface portion of the electrical component box body 81 adjacent to the first portion 87. The second opening 89 is provided on the back side of the electrical component box main body 81 so as to face the first opening 84, and as shown in FIG. Pass through. FIG. 8 is a top view of the electrical component box 43 in a state where it is attached to the outdoor unit 3.

  The first portion 87 is provided with a first fixing portion 91. The first fixing portion 91 has a claw-like shape that protrudes from the inner wall of the first portion 87 that covers the left and right sides of the first control board 85, and is locked to the edge of the first control board 85 to be the first. The control board 85 is fixed. The first fixing portion 91 is provided so as to be engaged with either the left or right edge portion of the first control board 85 or both. The first part 87 has a shape along the edge of the first control board 85 and the control components mounted on the first control board 85, and the first control board 85 is attached to the electrical component box body 81. In this state, the first portion 87 covers the top, bottom, left, right, and back sides of the first control board 85 in the vicinity of the edge of the first control board 85 and in the vicinity of the control components of the first control board 85. Further, as shown in FIG. 9, the second portion 88 is provided with a second fixing portion 92. FIG. 9 is a front view of the electrical component box 43 in a state of being attached to the outdoor unit 3. The second fixing portion 92 has a claw-like shape protruding from the inner wall that covers the top and bottom of the second control board 86 of the second portion 88, and is locked to the edge of the second control board 86 to be second. The control board 86 is fixed. The second fixing portion 92 is provided so as to be engaged with one or both of the upper and lower edges of the second control board 86. The second part 88 has a shape along the edge of the second control board 86. When the second part 88 is attached to the electrical component box body 81, the second part 88 is the second control board. The top, bottom, left, and right sides of the second control board 86 are covered in the vicinity of the periphery of the edge of 86. The first fixing portion 91 and the second fixing portion 92 are arranged so as not to overlap each other when viewed from the first opening 84. The second fixing portion 92 is formed so as not to overlap the edge portion of the first control board 85 when viewed from the first opening 84.

  Furthermore, as shown in FIG. 7, a part of the electrical component box body 81 is a movable portion 93. The movable part 93 has a tongue-like shape separated from the other part of the electrical component box main body 81 except for a part, and the switch 94 is turned on when a force is applied from the outside of the electrical component box main body 81. It is configured to be movable to operate. As shown in FIGS. 9 and 10, a protrusion 95 that protrudes toward the inside of the electrical component box 43 is provided on the inner side of the distal end of the movable portion 93. By pushing the movable part 93 from the outside, the movable part 93 is elastically deformed, and the tip of the movable part 93 including the protrusion 95 moves to the inside of the electrical component box 43. The movable portion 93 is configured such that the projection 95 pushes a switch 94 (described later) provided on the second control board 86 by such an operation.

[Control board]
The control board 82 includes a first control board 85 and a second control board 86. As shown in FIG. 7 and FIG. 8, the non-mounting surfaces face each other and are arranged in parallel to each other. Is disposed on the back side of the electrical component box body 81 and the second control board 86 is disposed on the first opening 84 side of the electrical component box body 81.

  The first control board 85 is attached in the electrical component box body 81 through the first opening 84 and substantially parallel to the first opening 84. Therefore, the first control board 85 is attached in parallel to the vertical direction in a state of being attached to the electrical component box body 81 and is in a state of being parallel to the front surface of the outdoor unit 3. The mounting direction of the first control board 85 to the electrical component box body 81 is a direction perpendicular to the first control board 85, that is, a direction perpendicular to the first opening 84, and the electrical component is mounted with the mounting surface facing the back side. It is attached to the box body 81.

  The second control board 86 is attached substantially in parallel to the first control board 85 between the first control board 85 and the first opening 84 through the first opening 84. Therefore, the second control board 86 is attached in parallel to the vertical direction and is in a state parallel to the front surface of the outdoor unit 3. The mounting direction of the second control board 86 to the electrical component box body 81 is also a direction perpendicular to the first control board 85, that is, a direction perpendicular to the second control board 86, and the mounting surface is on the front side, that is, the first opening 84 side. Attached facing. The second control board 86 has a shape larger than that of the first control board 85 when viewed from the mounting direction of the first control board 85, that is, the first opening 84. The board 86 is disposed so that the entire first control board 85 overlaps the second control board 86 when viewed from the first opening 84 (see FIG. 9). A push button type switch 94 is mounted on the second control board 86. The switch 94 is disposed in the vicinity of the edge of the second control board 86, and is disposed opposite to the protrusion 95 at a position close to the protrusion 95 of the movable portion 93, as shown in FIG. The switch 94 is a forced operation switch for the outdoor unit 3 of the air conditioner 1, and the operator of the air conditioner 1 can perform a test operation of the air conditioner 1 by pressing the switch 94. FIG. 11 is a cross-sectional view taken along the line AA in FIG.

[Heat radiation fins]
As shown in FIG. 8, the heat radiating fins 83 are provided in contact with the heat generating components mounted on the first control board 86. The tips of the radiation fins 83 protrude from the second opening 89 of the electrical component box body 81. In the state where the electrical component box 43 is attached to the machine room S1, the heat radiating fins 83 pass through the heat radiating fin protruding holes 56c (see FIG. 3) of the partition plate 56 as shown in FIGS. Protrudes into the second space S4 of the ventilation chamber S2. The tips of the radiating fins 83 are opposed to the first heat exchanging portion 30a of the outdoor heat exchanger 30 in the second space S4, and the radiating fins 83 are located at the endmost position on the blower fan 38 side of the partition plate 56, that is, from the left end. It is arranged on the machine room S1 side. Therefore, in the state where the electrical component box 43 is attached to the machine room S1, the radiating fins 83 do not protrude into the space immediately above the blower fan 38 and the space immediately above the blower fan 38, and in the vicinity of the blower fan 38. Arranged so as not to obstruct the air flow.

<Features>
(1)
In this air conditioner 1, the heat radiating fins 83 of the electrical component box 43 are disposed so as to protrude into the second space S4 of the ventilation chamber S2 and face the outdoor heat exchanger 30. That is, since the radiation fins 83 are placed in the air flowing through the ventilation chamber S2, a high heat radiation effect can be obtained. Moreover, since the radiation fin 83 is disposed so as not to interfere with the air flow in the vicinity of the blower fan 38 as described above, it is possible to suppress the generation of noise due to the turbulence of the air flow.

  Moreover, since the radiation fin 83 protrudes from the radiation fin protrusion hole 56c provided in the partition plate 56, only the radiation fin 83 is placed in the ventilation chamber S2 in a state where the electrical component box 43 is accommodated in the machine room S1. be able to. Therefore, compared with the case where the electrical component box 43 is disposed across the machine room S1 and the ventilation chamber S2, the risk of moisture entering the electrical component box 43 is reduced.

(2)
In the air conditioner 1, the switch 94 accommodated inside the electrical component box 43 can be operated by pushing the movable portion 93 of the electrical component box body 81 from the outside of the electrical component box 43. Therefore, the switch 94 can be operated from the outside of the electrical component box 43 via the movable portion 93 without putting a finger inside the electrical component box main body 81 or touching the control board 82 with a finger. . Accordingly, the finger is prevented from coming into contact with a charging component such as a capacitor when the switch 94 is operated, and the safety in the operation of the switch 94 is improved.

  The operation of the movable portion 93 for pressing the switch 94 can be realized with a simple configuration in which a part of the electrical component box body 81 is formed to be elastically deformable. Therefore, the movable part 93 can be easily formed when the electrical component box body 81 is integrally molded from a resin material.

(3)
In this air conditioner 1, a relatively small first control board 85 is disposed on the back side (back side) of the electrical component box body 81, and a relatively large second control board 86 is disposed on the first opening 84 side (front side). Is placed. Therefore, it is easy to arrange the second fixing portion 92 for fixing the second control board 86 at a position that does not hinder the attachment of the first control board 85. Therefore, the control board 82 can be easily attached.

  Further, since the first control board 85 and the second control board 86 are arranged in parallel so that the non-mounting surfaces face each other, the first control board 85 and the second control board 86 are arranged close to each other. Is easy. Further, the electrical component box body 81 has a shape along the control board 82 to be accommodated and the control components to be mounted. For this reason, the electrical component box 43 can be reduced in size. Furthermore, the electrical component box main body 81 has a shape that is large on the first opening 84 side and small on the back side, and thus has a shape that can be easily integrally molded with a mold. Further, since the first fixing portion 91 and the second fixing portion 92 are arranged so as not to overlap each other when viewed from the first opening 84, the first fixing portion 91 and the second fixing portion 92 can be easily molded. Thus, the electrical component box 43 of the air conditioner 1 has a miniaturized shape and a shape that can be easily integrally molded.

<Other embodiments>
(1)
In the above embodiment, a part of the electrical component box main body 81 is used as the movable portion 93, but a movable portion 93 provided separately from the electrical component box main body 81 may be provided. Also in this case, the safety in the switch operation can be improved. However, from the viewpoint of easily forming the movable portion 93, it is desirable to use a part of the electrical component box body 81 as described above.

(2)
In the above embodiment, the switch 94 is a push button type switch, but other types of switches such as a slide type switch may be provided.

(3)
In the above-described embodiment, the switch 94 is mounted on the surface of the second control board 86 on the first opening 84 side so that the switch 94 can be touched through the first opening 84. However, the switch 94 may be accommodated in the electrical component box main body 81 so that it cannot be operated from the outside except for the movable portion 93. For example, the first opening 84 of the electrical component box body 81 may be configured to be closed by a separate member, or the switch 94 may be mounted on the first control board 85 so that it cannot be operated from the outside. Thereby, the safety | security by switch operation further improves.

  The present invention has an effect that the control board can be easily attached to the electrical component box and the electrical component box can be miniaturized, and is useful as an electrical component box and an air conditioner for an air conditioner.

The external view of an air conditioner. The block diagram of a refrigerant circuit. The exploded perspective view of an outdoor unit. The perspective view which shows a part of structure of an outdoor unit. The front view which shows a part of structure of an outdoor unit. The top view which shows a part of structure of an outdoor unit. The exploded perspective view of an electrical component box. The top view of an electrical component box. The front view of an electrical component box. The external appearance perspective view of an electrical component box. AA sectional drawing in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Air conditioner 2 Indoor unit 3 Outdoor unit 43 Electrical component box 81 Electrical component box main body 84 1st opening (opening)
85 First control board 86 Second control board 87 First part 88 Second part 91 First fixing part 92 Second fixing part

Claims (6)

An electrical component box body (81) integrally molded and provided with an opening (84);
A first control board (85) mounted in the electrical component box body (81) in a state parallel to the edge of the opening (84) through the opening (84) ;
The first control board (85) is mounted substantially parallel to the first control board (85) between the first control board (85) and the opening (84) through the opening (84). ) And a second control board (86) having a shape larger than that of the first control board (85) when viewed from the mounting direction;
With
The electrical component box body (81)
A first part (87) covering the periphery of the edge of the first control board (85);
A second part (88) covering the periphery of the edge of the second control board (86) and positioned between the opening (84) and the first part (87);
A first fixing portion (91) that protrudes from an inner wall of the first portion (87) and engages with an edge of the first control substrate (85) to fix the first control substrate (85);
A second fixing portion (92) that protrudes from the inner wall of the second portion (88) and engages with an edge of the second control substrate (86) to fix the second control substrate (86);
Have
The first fixing portion (91) and the second fixing portion (92) are arranged so as not to overlap each other when viewed from the opening (84).
The electrical component box (43) of the air conditioner (1). The first control board (85) and the second control board (86) are arranged such that the entire first control board (85) overlaps the second control board (86) when viewed from the mounting direction. The
The electrical component box (43) of the air conditioner (1) according to claim 1. The second fixing portion (92) is formed so as not to overlap an edge portion of the first control board (85) when viewed from the mounting direction.
The electrical component box (43) of the air conditioner (1) according to claim 1 or 2. The first part (87) is close to an edge of the first control board (85),
The second part (88) is close to the edge of the second control board (86),
The electrical component box (43) of the air conditioner (1) according to any one of claims 1 to 3. The first control board (85) and the second control board (86) are arranged with their non-mounting surfaces facing each other.
The electrical component box (43) of the air conditioner (1) according to any one of claims 1 to 4. Indoor unit (2),
An outdoor unit (3) having the electrical component box (43) according to any one of claims 1 to 5,
An air conditioner (1) comprising:

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