JP2008298345A - Electrical equipment unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily perform layout of outdoor-side refrigerant circuit components disposed in a machine chamber and electrical equipment on substrates, in an electrical equipment unit of an outdoor unit having a first substrate disposed in the machine chamber in a state of being opposed to a partitioning plate and a second substrate disposed in a facing state to the first substrate and a front face of a casing. <P>SOLUTION: This electric equipment unit 61 comprises the first and second substrates 71, 81 on which the electrical equipment is mounted, a unit frame 62, and a reactor 84. The unit body 62 has a first substrate mounting portion 63 disposed in the machine chamber S2 in a state of being opposed to the partitioning plate 56 to mount the first substrate 71, and a second substrate mounting portion 64 disposed in a state of being opposed to a front face of the unit casing 51 to mount the second substrate 81. The reactor 84 is disposed in a roughly triangular prism space S3 formed between the first substrate mounting portion 63 and the second substrate mounting portion 64, and mounted on the unit body 62. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an electrical component unit, in particular, an outdoor unit having a structure in which a blower chamber and a machine chamber are formed by dividing an inner space of a substantially rectangular parallelepiped box-shaped casing into left and right by a partition plate extending vertically. The present invention relates to an electrical component unit disposed inside.

As a conventional outdoor unit, there is one having a structure in which a blower chamber and a machine chamber are formed by dividing an inner space of a substantially rectangular parallelepiped box-shaped casing into left and right by a vertically extending partition plate. In the casing of such an outdoor unit, outdoor refrigerant circuit components such as a compressor, a heat exchanger, a valve and a refrigerant pipe, and an electrical component unit are arranged. Of the outdoor refrigerant circuit components, the parts excluding the heat exchanger are arranged in the space below the middle part in the vertical direction of the machine room. The electrical component unit mainly includes a first substrate disposed in the machine room in a state of facing the partition plate, and a second substrate disposed in a state of facing the front surface of the casing. It is arranged in the space above. On the first substrate, an inverter control element or the like that mainly generates a large amount of heat during operation is mounted. Moreover, the microcomputer etc. with a small emitted-heat amount during driving | operation are mainly mounted on the 2nd board | substrate (refer patent document 1).
Japanese Patent Laying-Open No. 2005-076925

  In such an outdoor unit, a reactor constituting a rectifier circuit of a motor that drives a compressor or the like is also arranged. Here, when a reactor is provided separately from the electrical component unit in the machine room, a space for mounting the reactor is required, and thus the layout of the outdoor refrigerant circuit components arranged in the machine room is restricted. When there is a problem and the reactor is provided in the electrical component unit, it is desirable to arrange the reactor together with the first substrate in consideration of the fact that the reactor is an electrical component that generates a large amount of heat during operation. If arranged together with the substrate, the number and types of electrical components that can be mounted on the first substrate are limited, or electrical components that can no longer be mounted on the first substrate must be mounted on the second substrate, etc. There is a problem that the layout of electrical components on the substrate is restricted.

  An object of the present invention is to provide an electrical component unit of an outdoor unit having a first substrate disposed in a machine room in a state facing a partition plate and a second substrate disposed in a state opposed to a front surface of a casing. It is to facilitate the layout of the outdoor refrigerant circuit components and the electrical components on the substrate.

  An electrical component unit according to a first aspect of the invention is an outdoor unit having a structure in which a blower chamber and a machine chamber are formed by dividing an inner space of a substantially rectangular parallelepiped casing into left and right by a partition plate extending vertically. It is an electrical component unit disposed inside, and includes first and second substrates on which electrical components are mounted, a unit housing, and a reactor. The unit housing is disposed in a state where the first substrate is mounted and the first substrate mounting portion is disposed in the machine room in a state of being opposed to the partition plate, and the second substrate is mounted and is opposed to the front surface of the casing. A second board mounting portion. The reactor is disposed in a substantially triangular prism-like space formed between the first substrate attachment portion and the second substrate attachment portion, and is attached to the unit housing.

  In this electrical component unit, the reactor is disposed in a substantially triangular prism-like space formed between the first substrate mounting portion and the second substrate mounting portion, and is attached to the unit housing to effectively use the space in the machine room. Therefore, unlike the case where the reactor is provided separately from the electrical component unit in the machine room, it is not necessary to secure a space for attaching the reactor separately. Thereby, it becomes difficult to produce the problem that the layout of the outdoor refrigerant circuit components arranged in the machine room is restricted.

  An electrical component unit according to a second aspect is the electrical component unit according to the first aspect, wherein the reactor is attached to the second substrate attachment portion.

  In this electrical component unit, by attaching the reactor to the second substrate mounting portion, it is not necessary to arrange the reactor on the first substrate mounting portion together with the first substrate. Therefore, even though the reactor is provided in the electrical component unit. In addition, the number and types of electrical components that can be mounted on the first substrate are limited, and electrical components that cannot be mounted on the first substrate have to be mounted on the second substrate. Thereby, the problem that the layout of other electrical components on the first substrate is restricted is less likely to occur. Moreover, the connection between the reactor and the first substrate is easy as in the case where the reactor is disposed together with the first substrate on the first substrate mounting portion.

  An electrical component unit according to a third aspect of the invention is the electrical component unit according to the second aspect of the invention, wherein the second board mounting portion includes a board mounting plate to which the second board is mounted, and a support plate that covers the back surface of the board mounting plate. have. The reactor is attached to the support plate, and the portion of the support plate to which the reactor is attached is disposed with a gap between the substrate attachment plate and the reactor.

  In this electrical component unit, the reactor is attached to the support plate constituting the back surface of the second substrate attachment portion, and a gap is provided between the portion of the support plate to which the reactor is attached and the substrate attachment plate to which the second substrate is attached. Thus, while avoiding thermal contact between the reactor and the second substrate, the first substrate mounting portion and the second substrate mounting portion are secured in a state in which a sufficient gap is secured with respect to the electrical component on the first substrate side that generates a large amount of heat. It can arrange | position in the space of substantially triangular prism shape formed between. Thereby, the cooling of the reactor can be promoted without causing a problem that the second substrate is damaged by the heat generated by the reactor.

  As described above, according to the present invention, the following effects can be obtained.

  In the first invention, the problem that the layout of the outdoor refrigerant circuit components arranged in the machine room is restricted is less likely to occur.

  In the second invention, the problem that the layout of other electrical components on the first substrate is restricted is less likely to occur. Moreover, it is easy to connect the reactor and the first substrate.

  In the third invention, the cooling of the reactor can be promoted without causing a problem that the second substrate is damaged by the heat generated by the reactor.

  Hereinafter, an embodiment of an electrical component unit according to the present invention will be described based on the drawings.

(1) Configuration of Outdoor Unit FIG. 1 is a perspective view showing an outdoor unit 2 in which an electrical component unit 61 according to an embodiment of the present invention is adopted (however, it is shown in a state excluding a right front plate). 2 is a perspective view showing the top plate 53, the left front plate 54, the right front plate, the left side plate, and the right side plate 55 from FIG. In the following description, “top”, “bottom”, “left”, “right”, “front”, “rear”, “front”, “back” are shown in FIG. 1 unless otherwise specified. The direction when the outdoor unit 2 to be viewed is viewed from the front side (or the front side) is meant.

  The outdoor unit 2 has a structure in which a blower chamber S1 and a machine chamber S2 are formed by dividing an internal space of a substantially rectangular parallelepiped box-shaped unit casing 51 into right and left by a vertically extending partition plate 56 (so-called trunk type structure). An electrical component unit mainly for controlling the operation of each unit constituting the unit casing 51, outdoor refrigerant circuit components (described later), outdoor fans 36 and 37, and the outdoor unit 2. 61.

  The unit casing 51 mainly includes a bottom plate 52, a top plate 53, a left front plate 54, a left side plate (not shown in FIG. 1), a right front plate (not shown in FIG. 1), and a right side plate 55. (Not shown in FIG. 1) and a partition plate 56.

  The bottom plate 52 is a horizontally long, substantially rectangular metal plate-like member that constitutes the bottom portion of the unit casing 51. The peripheral edge of the bottom plate 52 is bent upward. On the outer surface of the bottom plate 52, two fixed legs 57 fixed to the field installation surface are provided. The fixed leg 57 is a metal plate-like member having a substantially U shape in a front view of the unit casing 51 and extending from the front side to the rear side of the unit casing 51.

  The top plate 53 is a horizontally long, substantially rectangular metal plate-like member that constitutes the top surface portion of the outdoor unit 2.

  The left front plate 54 is a metal plate-like member that mainly constitutes the left front surface portion of the unit casing 51, and a lower portion thereof is fixed to the bottom plate 52 with screws or the like. The left front plate 54 is provided with air outlets 54a and 54b for blowing air taken in from the back side and left side of the unit casing 51 to the outside by the outdoor fans 36 and 37. In the present embodiment, two outlets 54a and 54b are provided side by side in the vertical direction. Further, fan grills 58a and 58b are provided at the air outlets 54a and 54b, respectively.

  The left side plate (not shown in FIG. 1) is a metal plate-like member that mainly constitutes the left side surface portion of the unit casing 51, and its lower part is fixed to the bottom plate 52 with screws or the like. The left side plate can also function as a suction port for air sucked into the unit casing 51.

  The right front plate (not shown in FIG. 1) is a metal plate-like member that mainly constitutes the right front portion and the right front portion of the unit casing 51, and its lower portion is fixed to the bottom plate 52 with screws or the like. Has been. Further, the left side of the right front plate is fixed to the right side of the left front plate 54 with screws or the like.

  The right side plate 55 is a metal plate-like member that mainly constitutes the rear side portion of the right side surface of the unit casing 51 and the right side portion of the back surface, and the lower portion thereof is fixed to the bottom plate 52 with screws or the like.

  The partition plate 56 is a vertically extending metal plate-like member disposed on the bottom plate 52, and forms the blower chamber S1 and the machine chamber S2 by dividing the internal space of the unit casing 51 into left and right. . The lower part of the partition plate 56 is fixed to the bottom plate 52 with screws or the like. In the present embodiment, the partition plate 56 has a curved shape (hereinafter referred to as a curved surface) so as to protrude toward the blower chamber S1 in the plan view of the unit casing 51 in the present embodiment.

  As described above, the internal space of the unit casing 51 is divided into the blower chamber S <b> 1 and the machine chamber S <b> 2 by the partition plate 56. In the present embodiment, the blower chamber S <b> 1 is a space on the left side of the partition plate 56, and is formed by the bottom plate 52, the top plate 53, the left front plate 54, the left side plate, and the partition plate 56. The machine room S <b> 2 is a space on the right side of the partition plate 56, and is formed by the bottom plate 52, the top plate 53, the right front plate, the right side plate 55, and the partition plate 56. As will be described later, the outdoor heat exchanger 24 and the outdoor fans 36 and 37, which are one of the outdoor refrigerant circuit components, are arranged in the blower chamber S1, and the accumulator 21 and the compression are installed in the machine chamber S2. An outdoor refrigerant circuit component (including the outdoor heat exchanger 24) including members such as devices such as the machine 22, valves, and refrigerant pipes, and the electrical component unit 61 are disposed. In the unit casing 51, the left front plate 54 is disposed so as to face the blower chamber S1, the right front plate is disposed so as to face the machine chamber S2, and the machine room is removed by removing the right front plate. The inside of S2 can be seen. The right front plate may be a member integrated with the left front plate 54 (hereinafter referred to as a front plate). In this case, by removing the front plate, the inside of the blower chamber S1 and the machine chamber S2 is made. You will see. In the present embodiment, the blower room S1 is disposed on the left side and the machine room S2 is disposed on the right side when the outdoor unit 2 is viewed from the front, but the arrangement may be reversed left and right. Thus, the outdoor unit 2 of this embodiment has a structure in which at least a portion of the front plate facing the machine room S2 can be removed.

  The outdoor refrigerant circuit components mainly include an accumulator 21, a compressor 22, an outdoor heat exchanger 24, a first closing valve 26, and a second closing valve 27 (see FIGS. 1 and 2). Here, the outdoor heat exchanger 24 is disposed in the blower chamber S1, and outdoor refrigerant circuit components other than the outdoor heat exchanger 24 are disposed in the machine chamber S2.

  The accumulator 21 is a container for temporarily storing low-pressure refrigerant circulating in the refrigerant circuit 10 connected between the suction port of the compressor 22 and the four-way switching valve 23. In this embodiment, the accumulator 21 is a machine room. It is arranged at the right rear corner of S2 (see FIG. 2).

  The compressor 22 is a compressor having a function of sucking and compressing a low-pressure refrigerant and then discharging it into a high-pressure refrigerant. In this embodiment, other outdoor refrigerant circuit components such as the four-way switching valve 23 are used. In the state where the space for disposing the electrical component unit 61 is opened upward, it is disposed at the approximate center of the machine room S2 in plan view (see FIGS. 1 and 2). In the present embodiment, the compressor 22 is a hermetic compressor in which a compressor motor (not shown) is built in a housing (see FIGS. 1 and 2).

  In the present embodiment, the outdoor heat exchanger 24 is a heat exchanger that functions as a refrigerant cooler using outdoor air as a heat source during cooling, and functions as a refrigerant heater using outdoor air as a heat source during heating. In the present embodiment, the outdoor heat exchanger 24 is a cross fin type fin-and-tube heat exchanger configured by heat transfer tubes and a large number of fins, and is disposed in the blower chamber S1. The outdoor heat exchanger 24 has an L shape in plan view, and is arranged along the left side surface and the back surface of the unit casing 51 (see FIG. 2).

  The first and second closing valves 26 and 27 are valves provided at a connection portion between the refrigerant pipe on the outdoor unit 2 side and the refrigerant communication pipe (not shown). In the present embodiment, the machine chamber of the unit casing 51 is provided. In S2, it is arranged in front of the accumulator 21 and in the vicinity of the corner of the right front plate (see FIGS. 2 and 3).

  The outdoor fans 36 and 37 take in air into the blower chamber S <b> 1 through suction ports (not shown) formed on the left side surface and the back surface of the unit casing 51, pass the outdoor heat exchanger 24, and then the unit casing 51. It is the ventilation fan which functions so that it may blow off from the blower outlets 54a and 54b formed in the front surface of (refer FIG. 1, 2). In the present embodiment, each of the outdoor fans 36 and 37 is a propeller fan that is driven by the outdoor fan motors 36a and 37a, and is disposed on the front side of the outdoor heat exchanger 24 in the blower chamber S1 (FIGS. 1 and 2). reference). The outdoor fan 36 is disposed so as to face the air outlet 54a, and the outdoor fan 37 is disposed so as to face the air outlet 54b (see FIG. 1). That is, the outdoor fan 36 and the outdoor fan 37 are arranged side by side (see FIGS. 1 and 2). Note that the outdoor unit 2 of the present embodiment has a configuration having two outdoor fans 36 and 37, but is not limited to this. For example, as in the case of having one outdoor fan, 2 You may have the number of outdoor fans other than a stand.

  The electrical component unit 61 is disposed in the upper space of the machine room S2, and mainly includes electrical components such as an inverter control element for controlling the rotation speed of a compressor motor (not shown), outdoor fan motors 36a and 37a, and the like. A first board 71 on which a product is mounted, and a second board 81 on which an electrical component such as a microcomputer for performing operation control is mounted (see FIGS. 1 and 2).

(2) Configuration of the electrical component unit and its surroundings Next, the configuration of the electrical component unit 61 of the present embodiment and its surroundings will be described with reference to FIGS. Here, FIG. 3 is a perspective view showing the outdoor unit 2 viewed from the blower chamber S1 side (however, only the compressor 22, the bottom plate 52, the partition plate 56, the fixing leg 57, and the electrical component unit 61 are shown). FIG. 4 is a perspective view of the electrical component unit 61 in a state provided in the machine room S2 as viewed from the front side (further, the partition plate 56 is shown by a two-dot chain line). FIG. 5 is a perspective view of the electrical component unit 61 in a state provided in the machine room S2 as viewed from the right side (further, the partition plate 56 is shown by a two-dot chain line). 6 is a schematic cross-sectional view of the electrical component unit 61 and the partition plate 56 provided in the machine room S2 (however, the electrical components mounted on the first and second substrates 71 and 81, the reactor 84, and the heat sink). 74 is shown by a two-dot chain line). FIG. 7 is a view of the electrical component unit 61 in a state provided in the machine room S2 as viewed from the partition plate 56 side. FIG. 8 is a view of the electrical component unit 61 in a state before being provided in the machine room S2 as viewed from the heat sink 74 side.

  The electrical component unit 61 has a unit housing 62 to which the above-described first and second substrates 71 and 81 are attached. The unit housing 62 mainly has a first board mounting part 63, a second board mounting part 64, and a terminal block mounting part 65. The first substrate mounting portion 63 is mounted with the first substrate 71 and is disposed in the machine room S <b> 2 so as to face the partition plate 56. The second substrate attachment portion 64 is attached to the second substrate, and is disposed in the machine room S2 in a state of facing the front surface (here, the right front plate) of the unit casing 51. The terminal block attaching portion 65 includes a second terminal block 102 to which data transmission wiring and the like exchanged between the first terminal block 101 to which power supply wiring and the like are connected and an indoor unit (not shown) are connected. Is mounted and is disposed in the machine room S2 in a state of facing the front surface (here, the right front plate) of the unit casing 51.

  The first substrate mounting portion 63 mainly has a first substrate mounting plate 72 and a first support plate 73. In the present embodiment, the first substrate mounting plate 72 is a resin member, and is a first mounting plate body that forms a flat surface that is inclined with respect to the front surface (here, the right front plate) of the unit casing 51 and extends vertically. 72a and a first mounting plate frame 72b extending from the outer peripheral edge of the first mounting plate main body 72a toward the anti-blower chamber S1 side. And the 1st board | substrate 71 as an electrical component is attached to the surface by the side of the anti-blower chamber S1 of the 1st attachment plate main body 72a with a screw etc. in the state parallel to the flat surface of the 1st attachment plate main body 72a. Yes. That is, the substrate surface of the first substrate 71 is a flat surface that is inclined with respect to the front surface of the unit casing 51 and extends vertically, like the first attachment plate body 72a of the first substrate attachment plate 72. Become. Further, since the inverter control element and the like mounted on the first substrate 71 are electrical components that generate a large amount of heat during operation, the surface of the first mounting plate main body 72a on the side of the blower chamber S1 is connected to the first substrate 71. A heat sink 74 for cooling the mounted electrical component is attached. The heat sink 74 includes a flange portion 74a attached to the surface of the first mounting plate main body 72a on the fan chamber S1 side, and a plurality of cooling fins protruding from the surface of the flange portion 74a on the fan chamber S1 side toward the fan chamber S1 side. 74b. The first support plate 73 is disposed so as to cover the surface of the first mounting plate main body 72 a on the side of the blower chamber S <b> 1, and is fixed to the first substrate mounting plate 72. In the present embodiment, the first support plate 73 is a metal member, and in the state where the electrical component unit 61 is provided in the machine room S2, the surface of the first mounting plate main body 72a on the side of the blower chamber S1 is mainly used. A first support plate main body 73a in contact with the first support plate main body 73a, a front extending portion 73b extending forward from the front edge of the first support plate main body 73a along the curved surface of the partition plate 56, and a partition from the rear edge of the first support plate main body 73a. And a rear extension 73c extending rearward along the curved surface of the plate 56. Here, the first support plate main body 73a covers substantially the entire surface except the lower part of the first mounting plate main body 72a, and surrounds the outer periphery of the heat sink 74 protruding from the surface on the blower chamber S1 side of the first mounting plate main body 72a. A support plate opening 73d is formed. Thus, in a state where the first support plate 73 is fixed to the first substrate mounting plate 72, the plurality of cooling fins 74b of the heat sink 74 penetrate the support plate opening 73d and the blower chamber S1 of the first support plate main body 73a. Protrudes to the side. The first support plate 73 is fixed to the first substrate mounting plate 72, and the engaging claws and screws formed on the first support plate main body 73a, the front extension 73b, or the rear extension 73c. Etc., and is fixed to the partition plate 56. That is, the first support plate 73 is interposed between the first substrate mounting plate 72 and the partition plate 56, so that the first mounting plate main body 72a forming the flat surface of the first substrate mounting plate 72 is located in the machine room S2. The first substrate mounting plate 72 is supported by the partition plate 56 so as to be in a state of being positioned at and facing the curved surface of the partition plate 56. Here, a partition plate opening 56a is formed in the partition plate 56 so as to communicate the blower chamber S1 and the machine chamber S2. The partition plate opening 56a is formed to face the support plate opening 73d. The first support plate main body 73a extends upward from the upper edge of the partition plate opening 56a, and an upper extension 73e extending toward the partition plate 56 is formed on the upper edge of the first support plate main body 73a. Has been. Further, at the lower edge of the first support plate main body 73a, in a state in which the electrical component unit 61 is provided in the machine room S2, the lower extension extending toward the blower room S1 side and penetrating the partition plate opening 56a is provided. A tongue 73h having a portion 73f and a hanging portion 73g extending downward from the blower chamber S1 side end of the lower extension 73f is formed by bending or the like.

  As described above, the first substrate mounting portion 63 has a machine room such that the front edge and the rear edge thereof are in contact with the curved surface of the partition plate 56 by the front extension portion 73b and the rear extension portion 73c of the first support plate 73. Arranged in S2. The plurality of cooling fins 74b of the heat sink 74 protrude into the blower chamber S1 in a state where the electrical component unit 61 is provided in the machine room S2, and air passing through the blower chamber S1 is used as a cooling source. The electrical components mounted on the first substrate 71 can be cooled.

  The second substrate mounting portion 64 mainly has a second substrate mounting plate 82 and a second support plate 83. In the present embodiment, the second substrate mounting plate 82 is a resin member, and is a second mounting plate main body that forms a flat surface that extends parallel to and vertically with respect to the front surface of the unit casing 51 (here, the right front plate). 82a and a second mounting plate frame 82b extending from the outer peripheral edge of the second mounting plate main body 82a toward the front side of the unit casing 51 (hereinafter simply referred to as the front side). A second substrate 81 as an electrical component is placed on the front surface of the second mounting plate body 82a (hereinafter simply referred to as the front surface of the second mounting plate body 82a), and the flat surface of the second mounting plate body 82a. It is attached with screws or the like in a state parallel to. That is, the substrate surface of the second substrate 81 forms a flat surface extending in parallel and vertically to the front surface of the unit casing 51, like the second attachment plate body 82a of the second substrate attachment plate 82. Become. Further, the electrical component such as a microcomputer mounted on the second substrate 81 has a smaller amount of heat during operation than the inverter control element mounted on the first substrate 71. The second support plate 83 is disposed so as to cover the surface on the opposite side of the second mounting plate body 82a (hereinafter simply referred to as the back surface of the second mounting plate body 82a). It is fixed. In the present embodiment, the second support plate 83 is a metal member, and in the state where the electrical component unit 61 is provided in the machine room S2, the second support plate 83 mainly covers the back surface of the second mounting plate main body 82a. A plate body 83a, a left extension 83b extending forward from the left edge of the second support plate body 83a, and a lower extension 83c extending forward from the lower edge of the second support plate body 83a. Have. The second support plate 83 is fixed to the first support plate 73 via the first and second connecting members 66 and 67 while being fixed to the second substrate mounting plate 82. Here, the first connecting member 66 is a metal member in the present embodiment, and mainly the first connecting member main body 66a extending between the front end of the first support plate 73 and the left end of the second support plate 83. And a left extension 66b that extends from the left edge of the first connecting member main body 66a along the front extension 73b of the first support plate 73 and is fixed to the front extension 73b by an engaging claw, a screw, or the like. A right extending portion 66c extending from the right edge of the first connecting member main body 66a along the left extending portion 83b of the second support plate 83 and fixed to the left extending portion 83b by an engaging claw, a screw or the like. Have. The second connecting member 67 is a metal member in the present embodiment, and is arranged so as to be spanned between the upper end of the first support plate 73 and the upper end of the second support plate 83, One end thereof is fixed to the upper extending portion 73e of the first support plate 73 by screws or the like, and the other end is fixed to the upper end of the second support plate main body 83a of the second support plate 83 by screws or the like.

  As described above, the second substrate mounting portion 64 is fixed to the first substrate mounting portion 63 via the first and second connecting members 66 and 67. The first substrate mounting portion 63 to which the second substrate mounting portion 64 is fixed is fixed to the partition plate 56 in a state of being inclined with respect to the front surface of the unit casing 51, and the second substrate mounting portion 64 is a unit. Since the electrical component unit 61 is provided in the machine room S2 because it is disposed so as to face the front surface of the casing 51, it is between the first substrate mounting portion 63 and the second substrate mounting portion 64. A triangular column-shaped space S3 is formed.

  The terminal block attachment portion 65 mainly has a third support plate 103. In the present embodiment, the third support plate 103 is a metal member, and forms a flat surface extending in parallel and vertically to the front surface of the unit casing 51 (here, the right front plate). The upper end of the third support plate 103 is fixed to the lower extension 83c of the second support plate 83 with screws or the like. The first and second terminal blocks 101 and 102 are fixed to the third support plate 103 so as to face the front surface of the unit casing 51 and are arranged side by side.

  As described above, in the state where the electrical component unit 61 is provided in the machine room S2, the triangular column-shaped space S3 is provided between the first substrate mounting portion 63 and the second substrate mounting portion 64 constituting the unit housing 62. The first and second substrates 71 and 81 are attached to the first and second substrate attachment portions 63 and 64 that form the space S3.

  In the outdoor unit 2 in which the electrical component unit 61 having such a structure is arranged in the unit casing 51, the rectifier circuit of the outdoor fan motors 36a and 37a for driving the compressor 22, the outdoor fans 36 and 37, and the like are configured. A later-described reactor 84 is also arranged. Here, when the reactor 84 is provided separately from the electrical component unit 61 in the machine room S2, a space for mounting the reactor 84 is required. Therefore, the outdoor refrigerant circuit components arranged in the machine room S2 There is a problem that the layout of this is constrained.

  Therefore, in the electrical component unit 61 of the present embodiment, the reactor 84 has a substantially triangular prism shape formed between the first substrate mounting portion 63 and the second substrate mounting portion 64 that constitute the unit housing 62 of the electrical component unit 61. It is arranged in the space S3 and is attached to the unit housing 62.

  Thereby, it becomes possible to effectively use the triangular columnar space S3 which is a part of the space in the machine room S2, and unlike the case where the reactor 84 is provided separately from the electrical component unit 61 in the machine room S2, Since it is not necessary to secure a space for attaching the reactor 84 separately, the problem that the layout of the outdoor refrigerant circuit components arranged in the machine room S2 is limited is less likely to occur.

  Here, as a member for attaching the reactor 84, the reactor 84 may be attached to any of the members constituting the unit housing 62 as long as the state where the reactor 84 is arranged in the space S3 can be secured. In consideration of the fact that the reactor 84 is an electrical component that generates a large amount of heat during operation, the number and types of electrical components that can be mounted on the first substrate 71 are limited. There is a problem that the layout of the electrical components on the substrates 71 and 81 is restricted, such as the electrical components that cannot be mounted on the 71 have to be mounted on the second substrate 81.

  Therefore, in the electrical component unit 61 of the present embodiment, the reactor 84 is attached to the second substrate attachment portion 64.

  Accordingly, it is not necessary to arrange the reactor 84 together with the first substrate 71 on the first substrate mounting portion 63, and the electrical equipment that can be mounted on the first substrate 71 despite the case where the reactor 84 is provided in the electrical component unit 61. Since the number and types of products are limited or electrical components that can no longer be mounted on the first substrate 71 have to be mounted on the second substrate 81, other problems on the first substrate 71 occur. The problem that the layout of the electrical components is restricted is less likely to occur. In addition, similarly to the case where the reactor 84 is disposed in the first substrate mounting portion 63 together with the first substrate 71, the connection between the reactor 84 and the first substrate 71 is easy.

  Moreover, in the electrical component unit 61 of the present embodiment, when the reactor 84 is attached to the second substrate attachment portion 64, it is attached to the second support plate 83 constituting the back surface of the second substrate attachment portion 64, A gap S4 is provided between the portion of the second support plate 83 to which the reactor 84 is attached and the back surface of the substrate attachment plate 82. More specifically, in the present embodiment, the second support plate 83 constitutes a second support plate main body 83a in contact with the back surface of the second substrate mounting plate 82, and a substantially central portion of the second support plate 83. A reactor mounting portion 83d disposed with a gap S4 between the rear substrate mounting plate 82 and the rear surface thereof. The reactor 84 is attached to the reactor attachment portion 83d. Further, the upper and lower portions of the gap S4 are opened to communicate with the outside of the gap S4 (here, the space S3).

  Thereby, while avoiding the thermal contact between the reactor 84 and the second substrate 81, the first substrate mounting portion 63 and the electrical component on the first substrate 71 side having a large calorific value are secured with a sufficient clearance. Since it can be arranged in a substantially triangular prism-shaped space S3 formed between the second substrate mounting portion 64 and the second substrate 81, the reactor 84 is not damaged due to the heat generated by the reactor 84. 84 cooling can be promoted. In the present embodiment, the hot air is less likely to stay in the gap S4 due to the openings above and below the gap S4, and air convection in the gap S4 can be promoted. The effect of avoiding thermal contact with 81 and the effect of promoting the cooling of the reactor 84 can be further enhanced. The reactor attachment portion 83d may be a separate member from the second support plate 83, but a part of the second support plate 83 that covers the back surface of the second substrate attachment plate 82 is used as in this embodiment. It is preferable to configure the reactor attachment portion 83d in that the effect of reducing the number of parts can be obtained.

  Further, in the conventional outdoor unit, another substrate is provided below the second substrate 81 in the present embodiment, and a part of the electrical components mounted on the second substrate 81 in the present embodiment, the second terminal block 102, and the like. In this embodiment, the reactor 84 is formed in a substantially triangular prism-shaped space S3 formed between the first substrate mounting portion 63 and the second substrate mounting portion 64. And mounting on the second substrate mounting portion 64 reduces the restrictions on the layout of the electrical components on the substrates 71 and 81, and thereby the electrical components provided on a separate substrate in the conventional outdoor unit. Can be provided on the second substrate 81, and the separate substrate provided on the lower side of the second substrate 81 in the conventional outdoor unit is deleted. Thus, in the present embodiment, the entire electrical component unit 61 is made compact.

(3) Other Embodiments Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to these embodiments and can be changed without departing from the scope of the invention. It is.

(A)
In the above-described embodiment, the first and second connection members 66 and 67 are separate members from the first to third support plates 73, 83, and 103, but for example, the second support plate 83 and the first connection member The first and second connecting members 66 and 67, and the first to third supports, such as making the member 66 an integral member, or making the second support plate 83 and the third support plate 103 an integral member, etc. The plates 73, 83, and 103 may be configured as an integral member.

(B)
In the above-described embodiment, the reactor mounting portion 83d is formed so that the upper and lower sides of the gap S4 open into the space S3. However, the reactor mounting portion 83d is formed so that both sides of the gap S4 open into the space S3. Alternatively, the reactor attachment portion 83d may be formed so that only one of the upper side, the lower side, and the side of the gap S4 opens into the space S3. However, in the sense that hot air is less likely to stay in the gap S4, it is preferable that the upper portion of the gap S4 is open as in the above-described embodiment, and in the sense of promoting air convection in the gap S4, Like the above-mentioned embodiment, it is preferable that the clearance gap S4 is opened two or more places in space S3.

  If the present invention is used, an electrical component unit of an outdoor unit having a first substrate disposed in a machine room in a state of facing a partition plate and a second substrate disposed in a state of facing a front surface of a casing. It is possible to facilitate the layout of the outdoor refrigerant circuit components arranged in the room and the electrical components on the substrate.

It is a perspective view (however, it shows in a state except a right front board) which shows an outdoor unit with which an electrical equipment unit concerning one embodiment of the present invention was adopted. FIG. 2 is a perspective view of FIG. 1 excluding a top plate, a left front plate, a right front plate, a left side plate, and a right side plate. It is a perspective view (however, only a compressor, a baseplate, a partition plate, a fixed leg, and an electrical component unit are shown in figure) which shows the outdoor unit seen from the air blower room side. It is the perspective view which looked at the electrical equipment unit of the state provided in the machine room from the front side (further, a partition plate is shown with a dashed-two dotted line). FIG. 2 is a perspective view of the electrical component unit provided in the machine room as viewed from the right side surface (further, the partition plate is shown by a two-dot chain line). FIG. 2 is a schematic cross-sectional view of an electrical component unit and a partition plate provided in a machine room (however, electrical components mounted on first and second substrates, a reactor, and a heat sink are shown by two-dot chain lines). It is the figure which looked at the electrical equipment unit of the state provided in the machine room from the partition plate side. It is the figure which looked at the electrical equipment unit of the state before being provided in a machine room from the heat sink side.

Explanation of symbols

2 Unit casing (casing)
56 partition plate 61 electrical component unit 62 unit housing 63 first substrate mounting portion 64 second substrate mounting portion 71 first substrate 81 second substrate 82 substrate mounting plate 83 support plate 84 reactor S1 blower chamber S2 machine chamber S3 space S4 gap

Claims (3)

In the outdoor unit having a structure in which the blower chamber (S1) and the machine chamber (S2) are formed by dividing the inner space of the substantially rectangular parallelepiped casing (51) into left and right by a partition plate (56) extending vertically. An electrical component unit disposed in the casing,
First and second boards (71, 81) on which electrical components are mounted;
A first substrate mounting portion (63) disposed in the machine chamber in a state of being opposed to the partition plate, to which the first substrate is mounted, and a front surface of the casing, the second substrate being mounted. A unit housing (62) having a second substrate mounting portion (64) arranged in a state;
A reactor (84) disposed in a substantially triangular prism-shaped space (S3) formed between the first substrate mounting portion and the second substrate mounting portion, and mounted on the unit housing;
An electrical component unit (61).   The electrical component unit (61) according to claim 1, wherein the reactor (84) is attached to the second substrate attachment portion (64). The second substrate mounting portion (64) includes a substrate mounting plate (82) to which the second substrate (81) is mounted, and a support plate (83) that covers the back surface of the substrate mounting plate.
The reactor (84) is attached to the support plate;
The portion of the support plate to which the reactor is attached is disposed with a gap (S4) between the support plate and the substrate attachment plate.
The electrical component unit (61) according to claim 2.

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