JP2009186091A - Outdoor unit and air conditioning device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent water intrusion to a machine chamber while securing a wind passage of a heat exchanging chamber and the machine chamber. <P>SOLUTION: An electric component box supported by a partitioning plate partitioning the inside of a casing into the heat exchanging chamber and the machine chamber, has a body portion disposed in the machine chamber, and a heat sink disposed on the body portion in a projecting state, and the heat sink is inserted into an opening portion of the partitioning plate and faced to the heat exchanging chamber. The partitioning plate is provided with an extending portion extending to a side part toward the body portion at an upper side of the opening portion, and the body portion is provided with a water intrusion preventing plate separating upward from the extending portion and at least partially overlapped to the extending portion when observed from the above. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an outdoor unit and an air conditioner.

Conventionally, as an outdoor unit of an air conditioner, for example, as disclosed in Patent Document 1 below, a partition plate is disposed in a casing and is partitioned into a heat exchange chamber and a machine chamber is known. . In the outdoor unit disclosed in this patent document, a heat exchanger and a blower are disposed in the heat exchange chamber, and a compressor, an electrical component box, and the like are disposed in the machine room. This electrical component box is configured such that a power module is provided on one side and a heat sink is provided on the other side. Although the electrical component box is disposed in the machine room, the heat sink is disposed in the machine room so as to face the heat exchange chamber by inserting the heat sink into an opening provided in the partition plate.
Japanese Patent Laid-Open No. 10-26372

  The outdoor unit disclosed in Patent Document 1 has an advantage that the heat sink can be cooled by the air blown through the heat exchange chamber by the blower. However, since the partition plate has an opening, water such as rainwater is blown by the blower. There is a problem that the air is scattered with the rotation of the heat exchanger and is immersed in the machine room from the heat exchange chamber through the opening of the partition plate.

  Therefore, the present invention has been made in view of such points, and an object of the present invention is to prevent water from entering the machine room while ensuring a wind passage between the heat exchange room and the machine room. .

  In order to achieve the above object, the present invention is an outdoor unit comprising a partition plate that partitions a casing into a heat exchange chamber and a machine chamber, and an electrical component box supported by the partition plate. The product box has a main body disposed in the machine room and a heat sink protruding from the main body, and the heat sink is inserted into the opening of the partition plate and faces the heat exchange chamber. The partition plate is formed with an extension portion extending laterally toward the main body portion above the opening, and the main body portion is spaced apart upward from the extension portion and from above. The outdoor unit for an air conditioner is provided with a flood prevention plate so that at least a part thereof overlaps with the extension when viewed.

  In the present invention, since the extending portion extending from the partition plate toward the main body portion of the electrical component box and the infiltration prevention plate of the main body portion are arranged with a space in the vertical direction, at least through this gap, the heat exchange chamber and the machine The room is in communication. For this reason, the heat in the machine room can be radiated through the gap. On the other hand, when rainwater or the like in the heat exchange chamber tries to enter the machine room through this gap, the rainwater or the like is trapped by bending the airflow by the infiltration prevention plate that exists immediately above the extension. Therefore, it is possible to secure heat dissipation of the electrical component box by securing a wind path between the heat exchange chamber and the machine room, and to prevent water from entering the machine room.

  Here, the main body has a board support part for supporting the printed circuit board and an attachment member capable of attaching the board support part to the partition plate, and the water immersion prevention plate is provided on the attachment member. It is good also as a structure. In this aspect, since the infiltration prevention plate can be provided by using the attachment member for attaching the substrate support portion that supports the printed circuit board to the partition plate, the addition of a new member can be suppressed.

  In this aspect, when the heat sink protrudes from the substrate support portion, the attachment member is made of sheet metal, and an opening through which the heat sink can be inserted is provided, the water immersion prevention plate is attached to the attachment member. It is preferably formed by bending the edge of the opening.

  In this aspect, it is possible to form a water immersion prevention plate by leaving a portion of the sheet metal constituting the attachment member that is removed to form the opening through which the heat sink is inserted, and bending the portion. Therefore, the utilization efficiency of sheet metal can be improved. In addition, it is possible to dispose the flood prevention plate without welding another member to the sheet metal.

  Moreover, it is preferable that the said extension part is formed by bending the edge part of the opening part of the said partition plate. In this aspect, the part which is removed in order to form an opening part among the board | plate materials which comprise a partition plate is left, it can be bent and it can comprise as an extension part. Therefore, the utilization efficiency of the material can be improved. And an extension part can be constituted, without fixing another member to a board material.

  Moreover, it is preferable that the main body portion of the electrical component box is provided with an auxiliary prevention plate that is spaced apart upward from the flood prevention plate and extends sideways.

  In this aspect, when rainwater or the like is transported to the air flowing in from the heat exchange chamber and flows into the gap between the extension portion of the partition plate and the infiltration prevention plate, the rainwater or the like is caused by the presence of the infiltration prevention plate. It is prevented from scattering into the room. At this time, rainwater or the like may accumulate on the extension, and this rainwater or the like may scatter due to wind pressure or the like. However, there is an auxiliary prevention plate above the inundation prevention plate. Even if there is a possibility of accumulation of etc., it is possible to prevent the rainwater and the like from entering the machine room beyond the auxiliary prevention plate.

  Further, the casing has a communication hole that communicates the machine room with the outside of the casing at a position below the electrical component box, and air that has flowed into the machine room through the communication hole is transferred to the machine room. It is preferable that after flowing along the electrical component box from below to above, the heat exchange chamber can flow into the heat exchange chamber through a gap between the flood prevention plate and the extension portion.

  In this aspect, the electrical component box can be cooled by the outside air flowing into the machine room through the communication hole flowing along the electrical component box. This outside air enters the gap from the upper side of the infiltration prevention plate and is discharged to the heat exchange chamber through the opening of the partition plate. In other words, rainwater and the like that has entered through the opening of the partition plate from the heat exchange chamber is prevented from flowing by the flood prevention plate when splashing upward, and contributed to cooling the electrical component box in the heat exchange chamber. Air can be discharged through the gap.

  The present invention is an air conditioner including the outdoor unit for an air conditioner and an indoor unit.

  As described above, according to the present invention, it is possible to prevent water from entering the machine room while ensuring a wind path between the heat exchange chamber and the machine room.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 shows an external appearance of an air conditioner outdoor unit (hereinafter simply referred to as an outdoor unit) 10 according to the present embodiment. The outdoor unit 10 is connected to an indoor unit not shown via a refrigerant pipe (not shown), and the outdoor unit 10 and the indoor unit are combined to constitute an air conditioner.

  The outdoor unit 10 includes a rectangular parallelepiped casing 12 and is configured as a so-called trunk type outdoor unit 10. The outer plate 14 constituting the front surface of the casing 12 (the side surface on the left front side in FIG. 1) is formed with a blowout port on the left side portion, and a blowout grill 16 is covered on the blowout port. Further, a maintenance opening is provided in a right side portion of the outer plate 14, and a maintenance cover 18 is provided to close the opening.

  As shown in FIG. 2, the casing 12 is partitioned into a machine room S <b> 1 and a heat exchange room S <b> 2 by a partition plate 22. The partition plate 22 is provided so as to connect the outer plate 14 on the front surface side and the outer plate 15 on the rear surface side, and is formed in a curved shape in which the machine room side is concave when viewed from above. The machine room S1 is provided with a compressor 24, an accumulator 25, an electrical component box 26, and the like. The machine room S1 faces the opening for maintenance. On the other hand, a heat exchanger 28, a blower 30, and a bell mouth 32 are disposed in the heat exchange chamber S2, and the outlet is opened in the heat exchange chamber S2.

  The heat exchanger 28 is provided over the back surface of the casing 12 and one side surface connected to the back surface, and is formed in an L shape in plan view. The back surface of the casing 12 and the one side surface are configured as a suction port capable of sucking outside air.

  The blower 30 is disposed in front of the rear side portion of the heat exchanger 28. An opening 22a (see FIG. 3) of the partition plate 22 is located just on the side of the blower 30 (right side in FIG. 2). The opening 22 a is set at a position slightly higher than the drive shaft of the blower 30.

  As shown in FIGS. 3 and 4, the electrical component box 26 includes a heat sink 34, and the heat sink 34 is attached to the partition plate 22 in a state of being inserted through the opening 22 a of the partition plate 22. More specifically, the electrical component box 26 includes a main body portion 36 disposed in the machine room S1 and a heat sink 34 protruding from the main body portion 36. The main body portion 36 includes a printed circuit board 38 (FIG. 5). And a mounting member 42 capable of mounting the substrate support 40 to the partition plate 22. A heat sink 34 projects from the substrate support unit 40.

  The substrate support portion 40 is made of a resin, is formed in a rectangular dish shape having a peripheral edge rising with respect to the bottom portion, and a printed circuit board 38 (see FIG. 5) is attached to the inside thereof. The heat sink 34 is attached to the outside of the bottom (the front side in FIG. 4).

  The attachment member 42 is made of sheet metal, and includes a flat plate-like base portion 44 and a wing portion 46 that is connected to the side end of the base portion 44 while being bent with respect to the base portion 44 along the partition plate 22. The wing portion 46 has a claw portion 46a for engaging with the engagement hole 22c of the partition plate 22, and an engagement hole 46b for engaging a claw portion (not shown) provided in the substrate support portion 40. , Is provided. On the other hand, the base 44 is formed with an opening 44 a through which the heat sink 34 can be inserted. When the substrate support portion 40 and the attachment member 42 are overlapped and attached to the partition plate 22, the heat sink 34 is inserted into the opening portion 44 a of the attachment member 42 and the opening portion 22 a of the partition plate 22, and the heat exchange chamber S <b> 2. Protrusively inside.

  Since the base portion 44 of the mounting member 42 is flat, the partition plate 22 has a curved shape with a concave on the mounting member 42 side, so the mounting member 42 and the partition plate 22 are not in close contact with each other, and there is no gap between them. Will exist. Therefore, a closing portion 48 is provided at the lower end portion of the attachment member 42 so as to close this gap. The closing portion 48 is formed by bending a portion extending from the base portion 44 to the partition plate side. The blocking portion 48 penetrates through the opening 22a of the partition plate 22 and enters the heat exchange chamber S2. Due to the presence of the blocking portion 48, it is possible to prevent rainwater or the like flowing in from the opening 22a from flowing into the machine room S1.

  On the other hand, the upper end portion 44b of the attachment member 42 is provided with a portion that is bent from the base portion 44 toward the partition plate and extends in a substantially horizontal direction. Unlike the closing portion 48, the bent portion of the upper end portion 44 b of the base portion 44 is set to a size that leaves a gap between the mounting member 42 and the partition plate 22 (see FIG. 5). This gap is provided to allow the heat in the machine room S1 to escape to the heat exchange room S2.

  The main body portion 36 is provided with a protective cover 50 and a terminal block 52. The protective cover 50 is a member for protecting the printed circuit board 38, and includes a vertical portion 50a extending in the vertical direction, a horizontal portion 50b extending in the horizontal direction from the upper end portion of the vertical portion 50a, and both left and right end portions of the vertical portion 50a. And a leg portion 50c extending laterally. The protective cover 50 is fixed to the attachment member 42 by fastening the lateral portion 50 b to the upper end portion 44 b of the attachment member 42 and fixing the leg portion 50 c to the wing portion 46 of the attachment member 42. A reactor 55 that is a heating element is fixed to the protective cover 50. The terminal block 52 is fixed to the protective cover 50 and the mounting member 42.

  The printed circuit board 38 is disposed in a space between the protective cover 50 and the substrate support unit 40, and a capacitor 57 (see FIG. 5) that is a heating element is disposed on the printed circuit board 38. Since this space can be ventilated in the vertical direction, the condenser 57 is cooled by the air flowing in this space. For example, this air is introduced into the machine room S1 through a communication hole 59 (see FIG. 1) provided in the lower part of the casing on the machine room S1 side. Therefore, an air flow from the bottom to the top is obtained in the machine room S1.

  As shown in FIGS. 5 to 7, the partition plate 22 is provided with a flat plate-like extending portion 22 b extending in the horizontal direction. The extending part 22b is a part of the part that is removed to form the opening part 22a of the partition plate 22, and is bent toward the machine room S1 side. The upper edge of the opening part 22a Is provided. The extending portion 22 b has a shape that is long in the width direction of the partition plate 22, the width thereof is substantially constant, and a shape that follows the curved shape of the partition plate 22. A gap G1 is formed between the distal end portion of the extending portion 22b and the substrate support portion 40 (main body portion 36).

  On the other hand, the attachment member 42 is provided with a flat water-infiltration prevention plate 62 extending in the horizontal direction. The infiltration prevention plate 62 is formed by bending a part of the portion that is removed to form the opening 44a and bending it toward the partition plate 22, and the upper edge of the opening 44a of the mounting member 42. Is provided. The infiltration prevention plate 62 is provided at a position spaced upward from the extension portion 22b of the partition plate 22, and a part of the infiltration prevention plate 62, that is, the tip end portion overlaps with the extension portion 22b when viewed from above. It is formed in such a shape and size. A little gap G2 remains between the tip of the infiltration prevention plate 62 and the partition plate 22, but an extension 22b is present directly below the gap G2. And the infiltration prevention board 62 exists just above the gap | interval G1 between the front-end | tip part of the extension part 22b, and the attachment member 42. FIG. For this reason, even if rainwater or the like tries to enter the machine room S1 through the opening 22a of the partition plate 22, the intrusion of rainwater or the like is prevented by bending the airflow by the infiltration prevention plate 62 and the extension 22b. On the other hand, air can flow through the gap G2 and the gap G1. In other words, the infiltration prevention plate 62 cooperates with the extending part 22b of the partition plate 22 from the heat exchange chamber S2 to the machine chamber S1 while ensuring the air flow between the heat exchange chamber S2 and the machine chamber S1. Prevent flooding.

  As described above, the lateral portion 50b of the protective cover 50 is fastened in a state of being overlapped with the upper end portion 44b of the mounting member 42. This overlapped portion functions as an auxiliary prevention plate 64. The auxiliary prevention plate 64 is arranged above the infiltration prevention plate 62 and is arranged in parallel with the infiltration prevention plate 62, and the extension length of the auxiliary prevention plate 64 toward the partition plate 22 is the extension of the infiltration prevention plate 62. It is set smaller than the length. The auxiliary prevention plate 64 prevents scattering of water accumulated on the extending portion 22 b of the partition plate 22.

  In the outdoor unit 10 of the present embodiment, when the electrical component box 26 generates heat in the machine room S1, that is, when the reactor 55, the capacitor 57, etc. generate heat by driving, it is cooled by the air flowing in the machine room S1. This air is, for example, air introduced from the outside of the casing through the communication hole 59 provided in the lower part of the casing. This air flows through the space between the printed circuit board 38 and the protective cover 50 to cool the condenser 57 and the like, and flows outside the protective cover 50 to cool the reactor 55 and the like. As shown in FIG. 2, since the opening 22a of the partition plate 22 is located on the suction side of the blower 30, the opening 22a has an action of sucking from the machine room S1 as the blower 30 is driven. For this reason, it is possible to generate an air flow that cools the reactor 55 and the like by flowing outside air from a communication hole 59 provided in the lower part of the casing on the machine room S1 side. The air flows from above the auxiliary prevention plate 64 into the gap between the auxiliary prevention plate 64 and the partition plate 22, the gap G2 between the infiltration prevention plate 62 and the partition plate 22, the extension portion 22b, and the substrate support portion. It passes through the gap G1 between the main body 40 and the main body 36 in this order, and is guided to the heat exchange chamber S2 through the opening 22a of the partition plate 22.

  On the other hand, when the blower 30 is stopped and receives strong wind to rotate the blower 30, rainwater or the like scattered from the blower 30 enters the machine room S 1 through the opening 22 a of the partition plate 22. There is a case to try. However, even in this case, rainwater or the like is rebounded by the infiltration prevention plate 62, so that it is suppressed from scattering upward from the infiltration prevention plate 62. Rainwater or the like bounced off by the infiltration prevention plate 62 may accumulate on the extension 22b, and this rainwater or the like may be scattered by the airflow flowing from the heat exchange chamber S2 toward the machine chamber S1, but in that case However, the gap G2 between the infiltration prevention plate 62 and the partition plate 22 is narrow, and the presence of the auxiliary prevention plate 64 prevents rainwater or the like from entering the machine room S1.

  As described above, according to the present embodiment, the extended portion 22b extending from the partition plate 22 toward the mounting member 42 of the electrical component box 26 and the infiltration prevention plate 62 are arranged at an interval in the vertical direction. Therefore, the heat exchange chamber S2 and the machine chamber S1 communicate with each other through at least the gap between them. For this reason, the heat in the machine room S1 can be radiated through this gap. On the other hand, when rainwater or the like in the heat exchange chamber S2 tries to enter the machine chamber S1 through this gap, the rainwater or the like is trapped by the airflow being bent by the infiltration prevention plate 62 that exists immediately above the extension 22b. Will be. Therefore, it is possible to secure heat radiation of the electrical component box 26 by securing the air passage between the heat exchange chamber S2 and the machine room S1, and to prevent water from entering the machine room S1.

  In the present embodiment, the attachment member 42 is provided with a flood prevention plate 62. That is, since the infiltration prevention plate 62 can be provided by using the attachment member 42 for attaching the substrate support portion 40 that supports the printed circuit board 38 to the partition plate 22, the addition of a new member can be suppressed.

  Further, in this embodiment, since the inundation prevention plate 62 is formed by bending the edge of the opening 44a of the mounting member 42, the opening 44a through which the heat sink 34 is inserted is formed in the sheet metal constituting the mounting member 42. The portion that is removed for formation can be left, and it can be folded to form the infiltration prevention plate 62. Therefore, the utilization efficiency of sheet metal can be improved. In addition, it is possible to dispose the flood preventing plate 62 without welding another member to the sheet metal.

  Moreover, in this embodiment, since the extension part 22b of the partition plate 22 is formed by bending the edge part of the opening part 22a of the partition plate 22, the opening part 22a is comprised among the board | plate materials which comprise the partition plate 22. FIG. A portion that is removed for formation can be left and bent to form an extension 22b. Therefore, the utilization efficiency of the material can be improved. In addition, the extending portion 22b can be configured without fixing another member to the plate material.

  In the present embodiment, since the auxiliary prevention plate 64 is further provided above the infiltration prevention plate 62, it is possible to prevent rainwater or the like accumulated in the extending portion 22b from entering the machine room S1. In other words, when rainwater or the like is transferred to the air flowing in from the heat exchange chamber S2 and flows into the gap between the extension 22b of the partition plate 22 and the infiltration prevention plate 62, the rainwater or the like flows into the infiltration prevention plate 62. It is prevented from being scattered in the machine room S1 due to the presence. At this time, rainwater or the like may accumulate on the extension portion 22b, and this rainwater or the like may scatter due to wind pressure or the like. However, since the auxiliary prevention plate 64 exists above the infiltration prevention plate 62, the extension portion Even if rainwater or the like may accumulate on 22b, this rainwater or the like can be prevented from entering the machine room S1 beyond the auxiliary prevention plate 64.

  In the present embodiment, a communication hole 59 is formed in the casing 12 at a position below the electrical component box 26 so that the machine room S1 communicates with the outside of the casing. Air that has flowed into the machine room S1 through the communication hole 59 is formed. However, since it flows along the electrical component box 26 from the bottom to the top in the machine room S1, the electrical component box 26 can be cooled by this airflow. This outside air enters the gap between the flood prevention plate 62 and the extension 22b from the upper side of the flood prevention plate 62, and is discharged to the heat exchange chamber S2 through the opening 22a of the partition plate 22. That is, the rainwater or the like that has entered from the heat exchange chamber S2 through the opening 22a of the partition plate 22 is prevented from flowing by the infiltration prevention plate 62 when it is scattered upward, while the electrical components in the heat exchange chamber S2 The air that contributed to the cooling of the box 26 can be discharged through the gap.

  Note that the present invention is not limited to the above-described embodiment, and various modifications and improvements can be made without departing from the spirit of the present invention. For example, in the above-described embodiment, the flood prevention plate 62 is formed by the sheet metal constituting the attachment member 42, but the flood prevention plate 62 may be formed integrally with the substrate support portion 40.

It is a perspective view of the outdoor unit which concerns on embodiment of this invention. It is a figure which shows the structure inside the said outdoor unit. It is a fragmentary perspective view which shows the state by which the electrical component box was attached to the partition plate. It is a perspective view shown in the state which separated a partition plate, an attachment member, a substrate support part, and a protection cover for every member. It is a fragmentary longitudinal cross-sectional view of the electrical component box assembled | attached to the partition plate and the partition plate. It is sectional drawing in the VI-VI line of FIG. It is sectional drawing in the VII-VII line of FIG.

Explanation of symbols

S1 Machine room S2 Heat exchange room 10 Outdoor unit 12 Casing 22 Partition plate 22a Opening part 22b Extension part 26 Electrical component box 36 Main body part 38 Printed circuit board 40 Substrate support part 42 Mounting member 44a Opening part 59 Communication hole 62 Submersion prevention plate 64 Auxiliary prevention plate

Claims (7)

An outdoor unit comprising a partition plate for partitioning the inside of the casing into a heat exchange chamber and a machine room, and an electrical component box supported by the partition plate,
The electrical component box has a main body disposed in the machine room and a heat sink projecting from the main body, and the heat sink is inserted into the opening of the partition plate and faces the heat exchange chamber. And
The partition plate is formed with an extension portion extending laterally toward the main body portion above the opening portion,
The outdoor unit for an air conditioner, wherein the main body portion is provided with a water-prevention plate so that the main body portion is spaced upward from the extension portion and at least partially overlaps the extension portion when viewed from above.   The said main-body part has the board | substrate support part which supports a printed circuit board, and the attachment member which can attach this board | substrate support part to the said partition plate, The said flooding prevention board is provided in this attachment member. An outdoor unit for an air conditioner described in 1. The heat sink protrudes from the substrate support part,
The mounting member is made of sheet metal and provided with an opening through which the heat sink can be inserted.
The outdoor unit for an air conditioner according to claim 2, wherein the flood prevention plate is formed by bending an edge of an opening of the mounting member.   The outdoor unit for an air conditioner according to any one of claims 1 to 3, wherein the extension part is formed by bending an edge part of the opening part of the partition plate.   The air conditioning according to any one of claims 1 to 4, wherein the main body portion of the electrical component box is provided with an auxiliary prevention plate that is spaced apart from the flood prevention plate and extends laterally. Equipment outdoor unit. In the casing, a communication hole that communicates the machine room with the outside of the casing is formed at a position below the electrical component box,
After the air flowing into the machine room through the communication hole flows along the electrical component box from the bottom to the top in the machine room, the heat is passed through the gap between the flood prevention plate and the extension part. The outdoor unit for an air conditioner according to any one of claims 1 to 5, wherein the outdoor unit can flow into the exchange chamber.   The air conditioning apparatus provided with the outdoor unit for air conditioning apparatuses of any one of Claim 1 to 6, and an indoor unit.

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