WO2021166256A1

WO2021166256A1 - Outdoor unit for air conditioner

Info

Publication number: WO2021166256A1
Application number: PCT/JP2020/007235
Authority: WO
Inventors: 雄平島田
Original assignee: 三菱電機株式会社
Priority date: 2020-02-21
Filing date: 2020-02-21
Publication date: 2021-08-26
Also published as: JPWO2021166256A1; JP7292490B2

Abstract

This outdoor unit (1) for an air conditioner is provided with a case (2), a partition panel (3), a blower (4), a heat exchanger, a compressor (6), a reactor (7), and an electrical equipment box (8). The case (2) is provided with an air supply port for allowing air from outside the case (2) to flow into a blowing chamber (9) and an exhaust port for allowing airflow produced by the blower (4) to be expelled outside the blower chamber (9). The partition panel (3) is provided with at least one heat-shielding section (11) that protrudes toward the interior of a mechanical chamber (10) and is disposed between the reactor (7) and the electrical equipment box (8). In the interior of the heat-shielding section (11), an air channel (12) is formed that is in communication with the blowing chamber (9) and through which a portion of the air can flow from the air supply port toward the exhaust port.

Description

Outdoor unit of air conditioner

This disclosure relates to an outdoor unit of an air conditioner provided with a heat shield.

As an outdoor unit of a conventional air conditioner, the inside of the housing is divided into a blower room and a machine room by a partition plate, and a blower, a heat exchanger, etc. are arranged in the blower room, and a compressor, a reactor, an electrical box, etc. Is known to be placed in the machine room. The reactor is located above the compressor. The electrical box is located above the compressor and reactor. Inside the electrical box, electrical components that control the drive of the blower and compressor are housed.

When operating the air conditioner, the compressor and reactor self-heat and become hot, generating hot air in the machine room. If this hot air stays around the reactor and the electrical box, there is a problem that the reactor and electrical components are thermally affected and deteriorated.

Therefore, a technology to solve such a problem has been developed. For example, in Patent Document 1, the upper part of the partition plate is bent toward the machine room to form a heat shield, a compressor and a reactor are arranged below the heat shield, and electrical equipment is provided above the heat shield. A technique for suppressing the retention of hot air around an electrical box by arranging the box is disclosed. Further, in Patent Document 1, by forming a ventilation path communicating the air blowing chamber and the machine room in the heat shield portion, the hot air in the machine room is discharged into the air blowing chamber, and the retention of hot air around the reactor is suppressed. The technology to do is disclosed.

Japanese Unexamined Patent Publication No. 9-229427

However, in the technique disclosed in Patent Document 1, since the blower chamber and the machine room are communicated with each other, small animals, dust, moisture, salt, etc. easily enter the machine room from the blower chamber, and a failure of electrical parts occurs. There is a problem that it is more likely to be done.

The present disclosure has been made in view of the above, and an outdoor unit of an air conditioner capable of suppressing the occurrence of failure of an electric component and mitigating the thermal influence on the reactor and the electric component. The purpose is to get.

In order to solve the above-mentioned problems and achieve the object, the outdoor unit of the air conditioner according to the present disclosure includes a box-shaped housing and a partition plate that divides the inside of the housing into a blower chamber and a machine room. , A blower arranged in the blower chamber to generate an air flow, and a heat exchanger arranged in the blower chamber through which air for taking into the blower passes. Further, the outdoor unit of the air conditioner is a compressor arranged in the machine room, a reactor arranged above the compressor in the machine room, and an electric component arranged above the compressor and the reactor in the machine room. It is equipped with an electrical box for accommodating. The housing is provided with an air supply port for allowing air outside the housing to flow into the blower chamber and an exhaust port for discharging the air flow generated by the blower to the outside of the blower chamber. The partition plate is provided with at least one heat shield that projects toward the machine interior and is arranged between the reactor and the electrical box. Inside the heat shield, an air passage is formed that communicates with the air vent and allows a part of the air from the air supply port to the exhaust port to pass through.

According to the present disclosure, it is possible to suppress the occurrence of failure of electric parts and to mitigate the thermal influence on the reactor and electric parts.

Front view schematically showing the outdoor unit of the air conditioner according to the first embodiment. Top view schematically showing the outdoor unit of the air conditioner according to the first embodiment. Partially enlarged front view showing the heat shield and the periphery of the heat shield shown in FIG. A perspective view showing a partition plate, a heat shield, and a reactor of the outdoor unit of the air conditioner according to the first embodiment. Partial enlarged front view showing the heat shield portion of the outdoor unit of the air conditioner according to the second embodiment and the periphery of the heat shield portion. A perspective view showing a partition plate, a heat shield, and a reactor of the outdoor unit of the air conditioner according to the third embodiment. Partial enlarged front view showing the heat shield portion of the outdoor unit of the air conditioner according to the third embodiment and the periphery of the heat shield portion. Partial enlarged front view showing the heat shield portion of the outdoor unit of the air conditioner according to the fourth embodiment and the periphery of the heat shield portion.

The outdoor unit of the air conditioner according to the embodiment will be described in detail below based on the drawings.

Embodiment 1.
FIG. 1 is a front view schematically showing the outdoor unit 1 of the air conditioner according to the first embodiment. FIG. 2 is a plan view schematically showing the outdoor unit 1 of the air conditioner according to the first embodiment. As shown in FIGS. 1 and 2, the outdoor unit 1 of the air conditioner includes a box-shaped housing 2, a partition plate 3 that divides the inside of the housing 2 into a blower chamber 9 and a machine room 10, and a blower. It includes a blower 4 arranged in a chamber 9 to generate an air flow, and a heat exchanger 5 arranged in a blower chamber 9 through which air for taking into the blower 4 passes. Further, as shown in FIG. 1, the outdoor unit 1 of the air conditioner includes a compressor 6 arranged in the machine room 10, a reactor 7 arranged above the compressor 6 in the machine room 10, and a machine room 10. The compressor 6 and the electrical box 8 arranged above the reactor 7 and accommodating the electric component 14 are provided in the above. A part of the electrical box 8 is arranged in the blower chamber 9 beyond the upper end portion of the partition plate 3. In FIG. 2, the electrical box 8 is illustrated by a chain double-dashed line. In the following description, the outdoor unit 1 of the air conditioner may be simply referred to as the outdoor unit 1. Further, in the following description, the width direction of the outdoor unit 1 is defined as the X-axis direction. Further, the depth direction of the outdoor unit 1 is set to the Y-axis direction. Further, the height direction of the outdoor unit 1 is the Z-axis direction. Further, the Z-axis direction may be referred to as a vertical direction. Further, the direction in which air is discharged from the air blowing chamber 9 to the outside is the front, and the opposite side of the front is the rear. The arrow shown in FIG. 2 indicates the blowing direction of the air flowing in the blowing chamber 9.

As shown in FIGS. 1 and 2, the housing 2 is a member that serves as the outer shell of the outdoor unit 1. The housing 2 is formed in a hollow rectangular parallelepiped shape. The housing 2 has a bottom wall 21, a ceiling wall 22, a first side wall 23, a second side wall 24, a third side wall 25, and a fourth side wall 26. As shown in FIG. 1, the ceiling wall 22 is arranged above the bottom wall 21 and away from the bottom wall 21. As shown in FIG. 2, the first side wall 23, the second side wall 24, the third side wall 25, and the fourth side wall 26 rise from the peripheral edge of the bottom wall 21. An air supply port 27 is formed on the first side wall 23 located at the rear of the housing 2. The air supply port 27 is a portion for allowing air outside the housing 2 to flow into the air blowing chamber 9. Although not shown, an air supply port is also formed on the third side wall 25. A bell mouth-shaped exhaust port 28 is formed on the second side wall 24 located in the front of the housing 2. The exhaust port 28 is a portion for discharging the air flow generated by the blower 4 to the outside of the blower chamber 9.

As shown in FIG. 1, the partition plate 3 extends in the vertical direction from the bottom wall 21 to the electrical box 8. Further, as shown in FIG. 2, the partition plate 3 extends from the second side wall 24 to the heat exchanger 5 in the Y-axis direction. Specifically, the partition plate 3 extends linearly from the second side wall 24 along the Y-axis direction, and then extends in an inclined manner so as to be separated from the blower 4. The blower chamber 9 and the machine chamber 10 are formed side by side in the X-axis direction.

As shown in FIG. 1, the partition plate 3 is provided with a heat shield portion 11. The number of heat shields 11 is one in the present embodiment, but may be plural. That is, at least one heat shield 11 may be used. The heat shield portion 11 projects toward the inside of the machine room 10 and is arranged between the reactor 7 and the electrical box 8. The heat shield 11 serves to block the rise of hot air from the compressor 6 and the reactor 7 to the electrical box 8. The details of the heat shield 11 will be described later.

As shown in FIG. 2, the blower 4 is a device that rotates with the operation of the motor 13 to generate an air flow. As shown in FIG. 1, a part of the blower 4 is provided at the same height position as the heat shield portion 11.

As shown in FIG. 2, the heat exchanger 5 is a member that exchanges heat with the air taken into the blower 4 when the air conditioner is operating. Refrigerant is flowing in the heat exchanger 5. Heat exchange is performed between this refrigerant and the air taken into the blower 4. The heat exchanger 5 is formed in an L shape in a plan view. The heat exchanger 5 extends from the third side wall 25 along the first side wall 23. A portion of the heat exchanger 5 along the first side wall 23 is arranged behind the blower 4. A portion of the heat exchanger 5 along the third side wall 25 is arranged on the side of the blower 4.

As shown in FIG. 1, the compressor 6 is a device that compresses the refrigerant flowing in the heat exchanger 5. The compressor 6 is mounted on the bottom wall 21. The compressor 6 is fixed to the bottom wall 21 by bolts (not shown) or the like.

The reactor 7 is an electronic component that is a part of the inverter that controls the speed of the compressor 6. A part of the reactor 7 is arranged directly above the compressor 6, and the rest of the reactor 7 is arranged above the compressor 6 but outside the position directly above the compressor 6.

The electrical box 8 is a member that houses an electrical component 14 such as a control board necessary for operating the outdoor unit 1. The electrical box 8 is formed in a box shape that opens upward. The opening of the electrical box 8 is covered with a conductive electrical cover 15. A conductive ground plate (not shown) is attached to the electrical box 8. The ground plate electrically connects the partition plate 3 and the electrical box 8.

Here, the heat shield portion 11 will be described in detail with reference to FIGS. 3 and 4. FIG. 3 is a partially enlarged front view showing the heat shield portion 11 and the periphery of the heat shield portion 11 shown in FIG. FIG. 4 is a perspective view showing a partition plate 3, a heat shield portion 11, and a reactor 7 of the outdoor unit 1 of the air conditioner according to the first embodiment.

As shown in FIG. 3, the heat shield portion 11 extends horizontally. The horizontal dimension L1 of the heat shield portion 11 is larger than the horizontal dimension L2 of the reactor 7. The horizontal dimension L1 of the heat shield portion 11 is larger than the horizontal dimension L3 of the compressor 6. The heat shield portion 11 is arranged directly above the reactor 7 and the compressor 6. The heat shield portion 11 is arranged at a position where it overlaps with the reactor 7 and the compressor 6 in a plan view. In the present embodiment, the heat shield portion 11 is formed by bending a part of the partition plate 3 toward the machine room 10. Inside the heat shield portion 11, an air passage 12 is formed that communicates with the air vent chamber 9 and allows a part of the air from the air supply port 27 to the exhaust port 28 to pass through. The air passage 12 does not communicate with the machine room 10. The machine room 10 is a closed space. The reactor 7 and the electric component 14 are electrically connected to each other via the wiring 16. The wiring 16 is arranged so as to bypass the tip end portion of the heat shield portion 11.

As shown in FIG. 4, the heat shield portion 11 is formed with a first communication port 11a, a second communication port 11b, and an opening 11c. In FIG. 4, the first communication port 11a, the second communication port 11b, and the opening 11c are hatched to clarify their respective regions. The first communication port 11a and the second communication port 11b are openings that communicate the air blowing chamber 9 and the air passage 12. The first communication port 11a faces the portion of the heat exchanger 5 shown in FIG. 2 along the first side wall 23. The second communication port 11b faces the blower 4 shown in FIG. The opening 11c faces forward. The opening 11c is closed by the second side wall 24 shown in FIG. The air passage 12 extends along the air blowing direction of the air from the air supply port 27 toward the exhaust port 28.

Next, the effect of the outdoor unit 1 will be described.

As shown in FIG. 2, when the motor 13 rotates and the blower 4 is driven, the pressure inside the blower chamber 9 becomes negative, so that the air outside the outdoor unit 1 flows into the blower chamber 9 from the air supply port 27. do. The air that has flowed into the blower chamber 9 passes through the heat exchanger 5, becomes an air flow by the blower 4, and is discharged from the exhaust port 28 to the outside of the blower chamber 9. Further, a part of the air that has flowed into the blower chamber 9 passes through the air passage 12 of the heat shield portion 11 from the heat exchanger 5 and is discharged from the exhaust port 28 to the outside of the blower chamber 9.

In the present embodiment, as shown in FIG. 1, the partition plate 3 is provided with a heat shield portion 11 that projects toward the inside of the machine room 10 and is arranged between the reactor 7 and the electrical box 8. .. As a result, the rise of hot air from the compressor 6 and the reactor 7 to the electrical box 8 can be blocked, so that the thermal effect on the electric component 14 can be mitigated.

In the present embodiment, as shown in FIG. 1, an air passage that communicates with the air vent chamber 9 and allows a part of the air from the air supply port 27 to the exhaust port 28 to pass through the inside of the heat shield portion 11. Since the 12 is formed, air flows in the air passage 12 of the heat shield portion 11 as the blower operates the blower 4. The heat shield 11 can be forcibly air-cooled by the air flowing through the air passage 12 of the heat shield 11. As a result, the hot air in the machine room 10 can be dissipated to the heat shield portion 11, so that the internal temperature of the machine room 10 can be lowered to mitigate the thermal influence on the reactor 7 and the electric component 14. Therefore, in the present embodiment, the thermal influence on the reactor 7 and the electric component 14 can be mitigated by the synergistic effect of the heat shield of the hot air by the heat shield portion 11 and the forced air cooling on the heat shield portion 11.

In the present embodiment, the air passage 12 of the heat shield 11 can communicate with only the blower chamber 9, and the hot air in the machine room 10 can be dissipated to the heat shield 11. As a result, since the machine room 10 can be made into a closed space, it is possible to suppress the invasion of small animals, dust, moisture, salt and the like from the blower room 9 into the machine room 10, and the failure of the electric component 14 is less likely to occur.

As a method of suppressing deterioration of the reactor 7 and the electric component 14 due to the thermal influence, it is conceivable to use the reactor 7 and the electric component 14 having a high temperature rating and low loss characteristics. However, in such a method, since the sizes of the reactor 7 and the electric component 14 are increased, it is difficult to attach the reactor 7 and the electric component 14 to the housing 2, and the manufacturing cost of the reactor 7 and the electric component 14 is increased. Problems occur. On the other hand, in the present embodiment, deterioration of the reactor 7 and the electric component 14 due to the thermal effect can be suppressed by mitigating the thermal influence on the reactor 7 and the electric component 14. Therefore, since it is not necessary to use the reactor 7 and the electric component 14 having a high temperature rating and low loss characteristics, the occurrence of the above problem can be suppressed.

In the present embodiment, a part of the partition plate 3 is bent to form the heat shield portion 11, but the heat shield portion 11 may be formed separately from the partition plate 3. In such a configuration, an opening may be formed in the partition plate 3, and the heat shield portion 11 may be welded to the partition plate 3 and fixed to the partition plate 3 with bolts or the like so as to communicate with the air blowing chamber 9 through the opening. Further, the shapes of the heat shield portion 11 and the air passage 12 are not limited to the illustrated shapes. Further, the heat shield portion 11 may have an uneven structure. In this way, the surface area of the heat shield portion 11 increases, and the contact area between the heat shield portion 11 and the hot air increases, so that the hot air in the machine room 10 can be further dissipated by the heat shield portion 11. Further, a fin material formed of a material having high thermal conductivity may be inserted into the air passage 12 of the heat shield portion 11. In this way, the hot air in the machine room 10 can be efficiently dissipated into the air flowing through the air passage 12 of the heat shield portion 11. Further, since the mechanical strength of the heat shield portion 11 can be increased by the fin material, the deformation of the heat shield portion 11 and the partition plate 3 due to the vibration generated when the compressor 6 is driven can be suppressed.

Embodiment 2.
Next, the outdoor unit 1A of the air conditioner according to the second embodiment will be described with reference to FIG. FIG. 5 is a partially enlarged front view showing the periphery of the heat shield portion 11A and the heat shield portion 11A of the outdoor unit 1A of the air conditioner according to the second embodiment. The present embodiment is different from the above-described first embodiment in that a plurality of heat shields 11A are provided. In the second embodiment, the same reference numerals are given to the parts that overlap with the first embodiment, and the description thereof will be omitted.

As shown in FIG. 5, a plurality of heat shield portions 11A are provided at intervals in the vertical direction. The number of heat shields 11A is three in the present embodiment, but may be two or four or more. The horizontal dimensions L1 of each of the plurality of heat shields 11A are the same in the present embodiment, but may be different. If at least one of the plurality of heat shields 11A is made larger than the horizontal dimension L2 of the reactor 7 or the horizontal dimension L3 of the compressor 6, the horizontal dimension L1 of the rest of the plurality of heat shields 11A can be freely set. You can. An air passage 12A is formed inside each of the plurality of heat shield portions 11A.

In the present embodiment, the same effect as that of the above-described first embodiment can be obtained. Further, in the present embodiment, since a plurality of heat shield portions 11A are provided at intervals in the vertical direction, the amount of heat radiated from the hot air in the machine room 10 to the heat shield portion 11A can be increased. , The thermal effect on the reactor 7 and the electrical component 14 can be further mitigated.

Note that all or part of the plurality of heat shields 11A may have an uneven structure. Further, a fin material formed of a material having a high thermal conductivity may be inserted into the air passage 12A of all or a part of the plurality of heat shield portions 11A.

Embodiment 3.
Next, the outdoor unit 1B of the air conditioner according to the third embodiment will be described with reference to FIGS. 6 and 7. FIG. 6 is a perspective view showing a partition plate 3A, a heat shield portion 11 and a reactor 7 of the outdoor unit 1B of the air conditioner according to the third embodiment. FIG. 7 is a partially enlarged front view showing the heat shield portion 11 and the periphery of the heat shield portion 11 of the outdoor unit 1B of the air conditioner according to the third embodiment. In the present embodiment, the point that the opening 17 that communicates the blower chamber 9 and the machine room 10 is formed in the partition plate 3A and the point that the protrusion 18 is provided in the partition plate 3A are the same as those in the above-described first embodiment. It is different. In the third embodiment, the same reference numerals are given to the parts that overlap with the first embodiment, and the description thereof will be omitted. In FIG. 6, the protrusion 18 is omitted.

As shown in FIG. 6, an opening 17 for communicating the blower chamber 9 and the machine chamber 10 is formed in a portion of the partition plate 3A located between the heat shield portion 11 and the reactor 7. The shape of the opening 17 is not particularly limited, but is rectangular in the present embodiment. The opening area of the opening 17 is not limited to the illustrated example, and may be changed as appropriate. The opening 17 and the reactor 7 are arranged so that the position of the opening 17 in the vertical direction is above the position of the reactor 7 in the vertical direction. Although the opening 17 and the reactor 7 are arranged at positions that coincide with each other in the Y-axis direction in the present embodiment, they may be arranged at positions that are deviated from each other in the Y-axis direction.

As shown in FIG. 7, the partition plate 3A is provided with a protrusion 18. The protrusion 18 extends from the edge of the opening 17 of the partition plate 3A toward the inside of the machine room 10, and is arranged in front of the opening 17 with a gap from the opening 17. In the present embodiment, the protrusion 18 extends obliquely upward from the lower edge of the opening 17 of the partition plate 3A toward the inside of the machine room 10. The protrusion 18 is inclined so as to move away from the opening 17 as it goes upward. Although the protrusion 18 is formed separately from the partition plate 3 in the present embodiment, it may be formed integrally with the partition plate 3. The protrusion 18 is preferably provided over the entire length of the edge of the opening 17, but may be provided on a part of the edge of the opening 17, or may be provided at a space along the edge of the opening 17. A plurality may be provided. The protrusion 18 may extend diagonally downward from the upper edge of the opening 17 of the partition plate 3A toward the inside of the machine room 10. Further, the protrusion 18 may extend from each of the upper edge and the lower edge of the opening 17 of the partition plate 3A toward the inside of the machine room 10.

In the present embodiment, the same effect as that of the above-described first embodiment can be obtained. Further, in the present embodiment, an opening 17 for communicating the blower chamber 9 and the machine chamber 10 is formed in a portion of the partition plate 3A located between the heat shield portion 11 and the reactor 7. As a result, the hot air in the machine room 10 can be directly discharged into the air blowing chamber 9 through the opening 17. In the present embodiment, the thermal effect on the reactor 7 and the electric component 14 is exerted by the synergistic effect of the heat shield of the hot air by the heat shield portion 11, the forced air cooling to the heat shield portion 11, and the release of the hot air through the opening 17. It can be further relaxed.

In the present embodiment, the partition plate 3A is provided with a protrusion 18 extending from the edge of the opening 17 toward the inside of the machine room 10 and arranged in front of the opening 17 with a gap from the opening 17. Has been done. As a result, while allowing the release of hot air into the ventilation chamber 9 through the opening 17, it is possible to suppress the invasion of small animals, dust, moisture, salt, etc. into the machine room 10 through the opening 17, and the electrical component 14 Failure is less likely to occur.

Embodiment 4.
Next, the outdoor unit 1C of the air conditioner according to the fourth embodiment will be described with reference to FIG. FIG. 8 is a partially enlarged front view showing the periphery of the heat shield portion 11B and the heat shield portion 11B of the outdoor unit 1C of the air conditioner according to the fourth embodiment. The present embodiment is different from the above-described third embodiment in that the heat shield portion 11B is tilted with respect to the horizontal axis H. In the fourth embodiment, the same reference numerals are given to the parts that overlap with the third embodiment, and the description thereof will be omitted.

As shown in FIG. 8, the heat shield portion 11B is inclined downward by an angle θ with respect to the horizontal axis H. The angle θ may be appropriately set so as to reduce the air resistance of the air flowing through the air passage 12B of the heat shield portion 11B and not to come into contact with the reactor 7. The horizontal dimension L1 of the heat shield portion 11B is larger than the horizontal dimension L2 of the reactor 7. The horizontal dimension L1 of the heat shield portion 11B is larger than the horizontal dimension L3 of the compressor 6. The heat shield 11B is arranged directly above the reactor 7 and the compressor 6. The heat shield portion 11B is arranged from directly above the protrusion 18 to the side. The heat shield portion 11B is arranged with a gap from the tip end portion of the protrusion 18. The wiring 16 is arranged so as to bypass the tip end portion of the heat shield portion 11B. The heat shield portion 11B may be inclined upward with respect to the horizontal axis H. When the heat shield 11B is tilted upward, the angle of the heat shield 11B is set so that the air resistance of the air flowing through the air passage 12B of the heat shield 11B is reduced, and the electrical box 8 is used. The angle may be set appropriately so that it does not come into contact with.

In the present embodiment, the same effect as that of the above-described third embodiment can be obtained. Further, in the present embodiment, since the heat shield portion 11B can be tilted at an angle at which the air resistance of the air flowing through the air passage 12B of the heat shield portion 11B is reduced, the heat shield portion 11B flows through the air passage 12B of the heat shield portion 11B. The flow rate of air can be increased. As a result, the hot air in the machine room 10 can be further dissipated by the heat shield portion 11B, so that the thermal influence on the reactor 7 and the electric component 14 can be further mitigated.

In the present embodiment, since the heat shield portion 11B is inclined downward by an angle θ with respect to the horizontal axis H, the heat shield portion 11B and the heat shield portion 11B are tilted downward as compared with the case where the heat shield portion 11B is tilted horizontally or upward. The distance from the protrusion 18 can be narrowed. As a result, while allowing the release of hot air into the ventilation chamber 9 through the opening 17, it is possible to suppress the invasion of small animals, dust, moisture, salt, etc. into the machine room 10 through the opening 17, and the electrical component 14 Failure is less likely to occur.

The configuration shown in the above embodiments is an example, and can be combined with another known technique, can be combined with each other, and does not deviate from the gist. It is also possible to omit or change a part of the configuration.

1,1A, 1B, 1C Air conditioner outdoor unit, 2 enclosure, 3,3A partition plate, 4 blower, 5 heat exchanger, 6 compressor, 7 reactor, 8 electrical box, 9 blower room, 10 machine room , 11, 11A, 11B heat shield, 11a first communication port, 11b second communication port, 11c opening, 12, 12A, 12B air passage, 13 motor, 14 electrical parts, 15 electrical cover, 16 wiring, 17 Opening, 18 protrusions, 21 bottom wall, 22 ceiling wall, 23 first side wall, 24 second side wall, 25 third side wall, 26 fourth side wall, 27 air supply port, 28 exhaust port.

Claims

With a box-shaped housing
A partition plate that divides the inside of the housing into a blower chamber and a machine room,
A blower arranged in the blower chamber to generate an air flow and
A heat exchanger that is arranged in the blower chamber and through which air for taking into the blower passes.
The compressor placed in the machine room and
A reactor placed above the compressor in the machine room,
In the machine room, the compressor and an electrical box arranged above the reactor and accommodating electrical components are provided.
The housing has an air supply port for allowing air outside the housing to flow into the blower chamber, and an exhaust port for discharging the air flow generated by the blower to the outside of the blower chamber. Is provided,
The partition plate is provided with at least one heat shield that projects toward the machine chamber and is arranged between the reactor and the electrical box.
An outdoor unit of an air conditioner in which an air passage is formed inside the heat shield portion so as to communicate with the air vent and allow a part of the air from the air supply port to the exhaust port to pass through.
The outdoor unit of the air conditioner according to claim 1, wherein a plurality of the heat shields are provided at intervals in the vertical direction.
An opening for communicating the blower chamber and the machine chamber is formed in a portion of the partition plate located between the heat shield and the reactor.
The outdoor of the air conditioner according to claim 1 or 2, wherein the partition plate is provided with a protrusion extending from the edge of the opening toward the machine room and arranged in front of the opening. Machine.
The outdoor unit of the air conditioner according to any one of claims 1 to 3, wherein the heat shield is inclined upward or downward with respect to the horizontal axis.