WO2024154353A1

WO2024154353A1 - Outdoor unit for air conditioner

Info

Publication number: WO2024154353A1
Application number: PCT/JP2023/001768
Authority: WO
Inventors: 将寛黒田; 崇仁大西; 和志壬生
Original assignee: 三菱電機株式会社
Priority date: 2023-01-20
Filing date: 2023-01-20
Publication date: 2024-07-25

Abstract

An outdoor unit (1) for an air conditioner comprises: a box-shaped housing; a divider (4) which divides the inside of the housing into a fan chamber (12) and a machinery chamber (13); a reactor box (90) which is mounted on the divider (4) so as to protrude from the divider (4) into the fan chamber (12) and which is in communication with the machinery chamber (13); and a reactor (91) which is accommodated inside the reactor box (90).

Description

Air conditioner outdoor unit

This disclosure relates to an outdoor unit of an air conditioner equipped with a reactor.

　Conventional outdoor units for air conditioners generally have a structure in which the inside of the housing is divided into a blower chamber and a machine chamber by a partition plate, with the blower, heat exchanger, etc. located in the blower chamber, and the compressor, reactor, electrical component unit, etc. located in the machine chamber. The electrical component unit has electrical components that control the operation of the blower and compressor.

In the outdoor unit of a conventional air conditioner, outside air is drawn into the blower room by driving the blower, and either the heat from the heat exchanger is discharged to the atmosphere by the drawn-in outside air, or the cool air in the blower room is discharged to the atmosphere. The blower room is a space exposed to outside air, so it is a space into which dust, water, etc. can easily enter. On the other hand, the machine room is a space that houses the compressor, reactor, and electrical parts of the electrical component unit, which are vulnerable to dust and water, so it is separated from the blower room by a partition plate, making it an enclosed space that is less susceptible to the entry of dust, water, etc.

When the air conditioner is operating, heat is generated from the compressor, reactor, and electrical components of the electrical component unit, causing the temperature in the machine room to rise. When the temperature in the machine room rises, problems arise in that elements such as resistors and capacitors are thermally affected and deteriorate. In particular, the reactor generates a large amount of heat, so it is necessary to cool the reactor. One method of cooling the reactor is to cool it using only natural air cooling, as described in Patent Document 1.

JP 2016-50726 A

However, as reactors have become larger in current in recent years, there is a problem that cooling the reactor by natural air cooling alone, as in Patent Document 1, is insufficient.

The present disclosure has been made in consideration of the above, and aims to provide an outdoor unit for an air conditioner that can improve the cooling performance for the reactor.

In order to solve the above problems and achieve the objectives, the outdoor unit of the air conditioner disclosed herein comprises a box-shaped housing, a partition plate that divides the inside of the housing into a blower chamber and a machine chamber, a reactor box that is attached to the partition plate while protruding from the partition plate into the blower chamber and communicates with the machine chamber, and a reactor housed inside the reactor box.

The outdoor unit of the air conditioner disclosed herein has the effect of improving the cooling performance of the reactor.

FIG. 1 is a front view showing the appearance of an outdoor unit of an air conditioner according to a first embodiment; FIG. 1 is a front view showing an internal structure of an outdoor unit of an air conditioner according to a first embodiment; 3 is a cross-sectional view taken along line III-III shown in FIG. 2 . FIG. 3 is a cross-sectional view showing an outdoor unit of an air conditioner according to a second embodiment, which corresponds to the cross-sectional view taken along line III-III shown in FIG. FIG. 5 is a view taken from the direction of the arrow B in FIG. 4 . FIG. 11 is a cross-sectional view showing an outdoor unit of an air conditioner according to a modified example of the second embodiment. FIG. 11 is a cross-sectional view showing an outdoor unit of an air conditioner according to a third embodiment, which corresponds to the cross-sectional view taken along line III-III shown in FIG. FIG. 11 is a cross-sectional view showing an outdoor unit of an air conditioner according to a fourth embodiment, which corresponds to the cross-sectional view taken along line III-III shown in FIG.

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

Embodiment 1.
Fig. 1 is a front view showing the appearance of an outdoor unit 1 of an air conditioner according to the first embodiment. Fig. 2 is a front view showing the internal structure of the outdoor unit 1 of an air conditioner according to the first embodiment. As shown in Fig. 1, the outdoor unit 1 of the air conditioner includes a housing 2 and a wire grill 3. As shown in Fig. 2, the outdoor unit 1 of the air conditioner includes a partition plate 4, a blower 5, a heat exchanger 6, a compressor 7, an electric component unit 8, and a reactor unit 9. Hereinafter, the outdoor unit 1 of the air conditioner may be simply referred to as the outdoor unit 1.

When explaining the directions of each component of the outdoor unit 1 below, the depth direction of the outdoor unit 1 is defined as the X-axis direction, the height direction of the outdoor unit 1 as the Y-axis direction, and the width direction of the outdoor unit 1 as the Z-axis direction. Furthermore, the + direction in the X-axis direction is defined as the front, and the - direction in the X-axis direction is defined as the rear. The + direction in the X-axis direction is the direction from the - side to the + side of the X-axis, and the - direction in the X-axis direction is the direction from the + side to the - side of the X-axis. Furthermore, the + direction in the Y-axis direction is defined as the upward direction, and the - direction in the Y-axis direction is defined as the downward direction. The + direction in the Y-axis direction is the direction from the - side to the + side of the Y-axis, and the - direction in the Y-axis direction is the direction from the + side to the - side of the Y-axis. Furthermore, the + direction in the Z-axis direction is defined as the right, and the - direction in the Z-axis direction is defined as the left. The + direction in the Z-axis direction is the direction from the - side to the + side of the Z-axis, and the - direction in the Z-axis direction is the direction from the + side to the - side of the Z-axis. In this embodiment, the positive direction of the X-axis along which the airflow generated by the blower 5 of the outdoor unit 1 is discharged to the outside is the front, and the side opposite the front is the back.

As shown in Figures 1 and 2, the housing 2 is a box-shaped member that serves as the outer shell of the outdoor unit 1. The housing 2 is made of metal. As shown in Figure 2, an air intake port 2a is provided on the rear surface of the housing 2. The air intake port 2a is an opening for allowing air outside the housing 2 to flow into the blower chamber 12, which will be described later. As shown in Figure 1, an exhaust port 2b is provided on the front surface of the housing 2. The exhaust port 2b is an opening for discharging the airflow generated by the blower 5 to the outside of the blower chamber 12. The heat of the heat exchanger 6 or the cold air of the blower chamber 12 is discharged to the outside of the blower chamber 12 through the exhaust port 2b together with the airflow generated by the blower 5.

The wire grill 3 is a member that covers the air intake vent 2a to allow ventilation. The wire grill 3 is made of metal.

As shown in FIG. 2, the partition plate 4 is a member that divides the interior of the housing 2 into a blower chamber 12 and a machine chamber 13. The partition plate 4 is made of metal. The blower chamber 12 and the machine chamber 13 are formed side by side in the Z-axis direction. The partition plate 4 extends in the Y-axis direction from the floor surface to the ceiling surface of the housing 2. The partition plate 4 extends in the X-axis direction from the front to the back of the housing 2. The partition plate 4 has an opening 4a that connects the blower chamber 12 and the machine chamber 13.

The blower 5 is a device disposed in the blower chamber 12 and generates an air flow. The blower 5 is electrically connected to a mounting board 8b of the electrical component unit 8, which will be described later, via an electric wire (not shown). When the blower 5 is driven, the blower chamber 12 becomes negative pressure, and air outside the housing 2 flows into the blower chamber 12 from the air intake port 2a. The air that flows into the blower chamber 12 passes through the heat exchanger 6, becomes an air flow by the blower 5, and is exhausted to the outside of the blower chamber 12 from the exhaust port 2b shown in FIG. 1.

The heat exchanger 6 is disposed in the blower chamber 12 and is a component for exchanging heat between the refrigerant and the outdoor air. Outdoor air to be taken in by the blower 5 passes through the heat exchanger 6. The heat exchanger 6 is made of metal.

The compressor 7 is disposed in the machine room 13 and is a device that compresses the refrigerant flowing through the heat exchanger 6. The compressor 7 is disposed in the lower space of the machine room 13. The compressor 7 is electrically connected to a mounting board 8b (described below) of the electrical component unit 8 via an electric wire (not shown). Although not shown, multiple refrigerant pipes through which the refrigerant flows are disposed in the machine room 13. The refrigerant pipes are connected to an indoor unit (not shown), the compressor 7, the heat exchanger 6, etc.

The electrical component unit 8 is disposed in the machine room 13. The electrical component unit 8 is disposed above and away from the compressor 7. The electrical component unit 8 has a storage box 8a.

FIG. 3 is a cross-sectional view taken along line III-III in FIG. 2. Arrow A in FIG. 3 indicates the direction of the airflow generated by the blower 5. Wavy arrows in FIG. 3 indicate the flow of heat. A dashed line in FIG. 3 indicates the boundary C between the blower chamber 12 and the machine chamber 13. In FIG. 3, the first electrical component 8e, the second electrical component 8f, the fins 10a, and the reactor 91 are not hatched for ease of understanding. As shown in FIG. 3, the electrical component unit 8 has a mounting board 8b that controls the operation of the outdoor unit 1. The mounting board 8b is housed inside the housing box 8a shown in FIG. 2.

The mounting board 8b is disposed in the machine room 13. The mounting board 8b has a mounting surface 8c facing the blower room 12 and a board surface 8d facing the opposite side to the mounting surface 8c. A first electrical component 8e and a second electrical component 8f are mounted on the mounting board 8b. The first electrical component 8e and the second electrical component 8f are fixed to the mounting board 8b by soldering. The first electrical component 8e is attached to the mounting surface 8c. The first electrical component 8e is, for example, a power semiconductor. The power semiconductor is, for example, an IGBT (Insulated Gate Bipolar Transistor), a diode, or an IPM (Intelligent Power Module). The second electrical component 8f is attached to the board surface 8d. The second electrical component 8f is, for example, a common mode coil.

A heat sink 10 is attached to a portion of the first electrical component 8e facing the blower chamber 12. The heat sink 10 serves to cool the first electrical component 8e. The heat sink 10 has a number of fins 10a extending toward the blower chamber 12. An opening 4a that connects the blower chamber 12 and the machine chamber 13 is formed in the portion of the partition plate 4 where the heat sink 10 and a reactor box 90 (described later) are arranged. The fins 10a of the heat sink 10 are arranged in the blower chamber 12 through the opening 4a of the partition plate 4. The fins 10a of the heat sink 10 are adapted to be exposed to the airflow generated by the blower 5. The heat sink 10 is cooled by the airflow generated by the blower 5.

The multiple fins 10a are arranged at intervals from one another in the X-axis direction. The fins 10a are plate-shaped members. The fins 10a are made of metal. The rear end, which is one end of the heat sink 10 in the X-axis direction, is fixed to the partition plate 4 with screws 11. The front end, which is the other end of the heat sink 10 in the X-axis direction, is fixed to the reactor base 92, which will be described later, with screws 11.

The reactor unit 9 is attached to the partition plate 4 while being placed in the blower chamber 12 through the opening 4a of the partition plate 4. The reactor unit 9 has a reactor box 90, a reactor 91, and a reactor stand 92.

The reactor box 90 is a box-shaped member with a hole 90a that opens toward the machine room 13. The inside of the reactor box 90 is in communication with the machine room 13 through the hole 90a. The reactor box 90 is made of metal. The reactor box 90 is attached to the partition plate 4 in a state where it protrudes from the partition plate 4 into the blower room 12. The reactor box 90 is arranged in a state where it protrudes into the blower room 12 through the opening 4a of the partition plate 4. The reactor box 90 is adapted to be exposed to the airflow generated by the blower 5. The reactor box 90 is cooled by the airflow generated by the blower 5.

The reactor box 90 is attached to the partition plate 4 so as to cover a portion of the opening 4a. The reactor box 90 and the heat sink 10 may cover the entire opening 4a. In this way, it is possible to prevent dust, water, etc. from entering the machine room 13 from the blower room 12 through the opening 4a.

As shown in FIG. 2, the reactor box 90 has a bottom surface 90b and a top surface 90c. As shown in FIG. 3, the reactor box 90 has a first surface 90d, a second surface 90e, and a third surface 90f.

As shown in FIG. 2, the bottom surface 90b extends horizontally as it moves away from the machine room 13 along the Z-axis direction, and then extends at an angle to be positioned upward. The top surface 90c is positioned above and away from the bottom surface 90b. The top surface 90c extends horizontally in the Z-axis direction.

The first surface 90d shown in FIG. 3 connects the rear end of the bottom surface 90b and the rear end of the top surface 90c shown in FIG. 2. The first surface 90d extends vertically in the Y-axis direction. The first surface 90d faces the rear surface of the housing 2. A first flange portion 90g is formed on the right end of the first surface 90d, extending rearward in the X-axis direction.

The second surface 90e connects the front end of the bottom surface 90b to the front end of the top surface 90c. The second surface 90e extends vertically in the Y-axis direction. The second surface 90e faces the front of the housing 2. A second flange portion 90h is formed on the right end of the second surface 90e, extending forward in the X-axis direction. The second flange portion 90h is fixed to the partition plate 4 by the screw 11. The second flange portion 90h is fixed to the edge of the opening 4a of the partition plate 4.

The third surface 90f connects the left end of the bottom surface 90b to the left end of the top surface 90c, and also connects the left end of the first surface 90d to the left end of the second surface 90e. The third surface 90f extends vertically in the Y-axis direction. The third surface 90f is located on the opposite side of the hole 90a across the reactor 91.

The reactor 91 is housed inside the reactor box 90. The reactor 91 is an electrical component that is part of the inverter that controls the speed of the compressor 7.

The reactor stand 92 is a fixing sheet metal that fixes the reactor box 90 and the reactor 91. The reactor stand 92 fixes the reactor box 90 and the heat sink 10. The reactor stand 92 is made of metal. The reactor stand 92 has an L-shape in plan view. The reactor stand 92 has a first fixing portion 92a and a second fixing portion 92b.

The first fixing portion 92a extends in the Z-axis direction inside the reactor box 90. The reactor 91 is fixed to the first fixing portion 92a by a screw 11. The reactor 91 is fixed to the surface of the first fixing portion 92a facing forward. The second fixing portion 92b extends in the X-axis direction from the right end of the first fixing portion 92a toward the rear. The first flange portion 90g of the reactor box 90 and the front end of the heat sink 10 are fixed to the second fixing portion 92b by a screw 11. The first flange portion 90g of the reactor box 90 and the front end of the heat sink 10 are fixed to the surface of the second fixing portion 92b facing the blower chamber 12. The first flange portion 90g of the reactor box 90 and the heat sink 10 are arranged side by side in the X-axis direction. The reactor box 90 is fixed to the partition plate 4 via the reactor stand 92 and the heat sink 10.

Next, the effects of the outdoor unit 1 according to the first embodiment will be explained.

As shown in FIG. 2, when the blower 5 is driven, the blower chamber 12 becomes negative pressure, and air outside the housing 2 flows into the blower chamber 12 through the air intake 2a. The air that flows into the blower chamber 12 passes through the heat exchanger 6, becomes an air flow by the blower 5, and is exhausted to the outside of the blower chamber 12 through the exhaust 2b shown in FIG. 1.

When the blower 5 is driven, the first electrical component 8e, the second electrical component 8f, and the reactor 91 shown in FIG. 3 generate heat. The heat generated from the first electrical component 8e is transferred to the heat sink 10 and dissipated from the heat sink 10 into the air in the blower chamber 12, so that the first electrical component 8e can be cooled by natural air cooling. In addition, the airflow generated by the blower 5 hits the heat sink 10, so that the heat sink 10 can be cooled by forced air cooling. In this way, the heat generated from the first electrical component 8e can be efficiently dissipated by natural air cooling and forced air cooling.

The heat generated from the second electrical component 8f is dissipated into the air in the machine room 13, so that the second electrical component 8f can be cooled by natural air cooling. A heat conductive insulating member (not shown) may be sandwiched and disposed between the mounting surface 8c of the mounting board 8b and the second fixing portion 92b of the reactor stand 92, and may be attached to the mounting board 8b near the second electrical component 8f. In this way, the heat generated from the second electrical component 8f is transmitted in the order of the mounting board 8b, the heat conductive insulating member, and the reactor stand 92, and then from the reactor stand 92 to the heat sink 10 and the reactor box 90. Then, the airflow generated by the blower 5 hits the heat sink 10 and the reactor box 90, so that the heat sink 10 and the reactor box 90 can be cooled by forced air cooling. In this way, the heat generated from the second electrical component 8f can be efficiently dissipated by natural air cooling and forced air cooling.

The heat generated from the reactor 91 is transferred to the reactor box 90 through the reactor stand 92, or into the air inside the reactor box 90. In this embodiment, the reactor box 90 is attached to the partition plate 4 in a state where it protrudes from the partition plate 4 into the blower room 12, so that the airflow generated by the blower 5 hits the reactor box 90, and the reactor box 90 can be cooled by forced air cooling. In this way, the heat generated from the reactor 91 can be efficiently dissipated by forced air cooling, so the cooling performance for the reactor 91 can be improved compared to when the heat generated from the reactor 91 is dissipated only by natural air cooling. Therefore, the temperature rise in the machine room 13 can be suppressed, and the thermal effects on elements such as resistors and capacitors can be mitigated.

In this embodiment, the outdoor unit 1 is provided with a reactor stand 92 that fixes the reactor box 90 and the reactor 91, making it easier for heat generated from the reactor 91 to be transferred to the reactor box 90.

In this embodiment, an opening 4a that connects the blower chamber 12 and the machine chamber 13 is formed in the portion of the partition plate 4 where the reactor box 90 is arranged, and heat generated in the machine chamber 13 is dissipated into the air in the blower chamber 12 through the opening 4a. This makes it possible to suppress the rise in temperature in the machine chamber 13 and mitigate the thermal effects on elements such as resistors and capacitors. It is not necessary to provide the opening 4a in the partition plate 4.

Embodiment 2.
Next, an outdoor unit 1A of an air conditioner according to a second embodiment will be described with reference to Figures 4 and 5. Figure 4 is a cross-sectional view showing an outdoor unit 1A of an air conditioner according to a second embodiment, and corresponds to the cross-sectional view taken along line III-III shown in Figure 2. Figure 5 is a view seen from the direction of arrow B shown in Figure 4. This embodiment differs from the first embodiment in that a slit 90i is provided in the reactor box 90. In the second embodiment, parts that overlap with those in the first embodiment are given the same reference numerals and will not be described.

As shown in FIG. 4, the reactor box 90 is provided with slits 90i that connect the inside and outside of the reactor box 90. The slits 90i are located in the blower chamber 12. The number of slits 90i is six in this embodiment, but at least one slit is sufficient. The slits 90i are provided on both the first surface 90d and the second surface 90e in this embodiment, but they may be provided on at least one of the first surface 90d and the second surface 90e. In this embodiment, three slits 90i are provided on each of the first surface 90d and the second surface 90e.

As shown in FIG. 5, the three slits 90i provided on the second surface 90e are arranged at intervals from each other in the Z-axis direction. In this embodiment, the shape of the slits 90i when viewed along the penetrating direction of the slits 90i is approximately triangular. The shape of the slits 90i when viewed along the penetrating direction of the slits 90i is not particularly limited as long as it is a shape that allows the air flow generated by the blower 5 to pass through. The extension direction of the slits 90i is the vertical direction along the Y-axis direction in this embodiment, but it may be the horizontal direction along the Z-axis direction or a direction oblique to the vertical and horizontal directions. Although not shown, the arrangement, shape, and extension direction of the slits 90i provided on the first surface 90d may be the same as or different from the arrangement, shape, and extension direction of the slits 90i provided on the second surface 90e.

In this embodiment, as shown in Figures 4 and 5, the reactor box 90 is provided with at least one slit 90i that connects the inside and outside of the reactor box 90, so that the airflow generated by the blower 5 flows inside the reactor box 90. As a result, the airflow hits the reactor 91, so that the reactor 91 can be cooled by forced air cooling. In this way, the forced air cooling can dissipate the heat generated by the reactor 91 more efficiently, so that the cooling performance for the reactor 91 can be further improved. Therefore, the temperature rise of the machine room 13 can be suppressed, and the thermal effects on elements such as resistors and capacitors can be further mitigated.

In this embodiment, as shown in FIG. 4, the reactor box 90 has a first surface 90d facing the rear surface of the housing 2 and a second surface 90e facing the front surface of the housing 2, and the slits 90i are provided on both the first surface 90d and the second surface 90e. With this configuration, the air flow flows into the inside of the reactor box 90 from the slits 90i provided on the first surface 90d and is discharged to the outside of the reactor box 90 from the slits 90i provided on the second surface 90e. Therefore, the heat generated from the reactor 91 is discharged to the outside of the reactor box 90 from the slits 90i provided on the second surface 90e together with the air flow. By discharging the heat generated from the reactor 91 to the outside of the reactor box 90 in this way, the heat generated from the reactor 91 can be dissipated more efficiently, and the cooling performance for the reactor 91 can be further improved. Therefore, the temperature rise in the machine room 13 can be suppressed, and the thermal effects on elements such as resistors and capacitors can be further mitigated. The slits 90i may be provided in one or more of the bottom surface 90b, the top surface 90c, the first surface 90d, the second surface 90e, and the third surface 90f, or the slits 90i may not be provided in the reactor box 90.

FIG. 6 is a cross-sectional view showing an outdoor unit 1A of an air conditioner according to a modified example of the second embodiment. In FIG. 6, the reactor 91 is not hatched for ease of understanding. As shown in FIG. 6, the reactor box 90 may be provided with a shielding portion 90j that extends downward from the upper edge of the slit 90i and is positioned in front of the slit 90i. The shielding portion 90j serves to prevent water from entering the inside of the reactor box 90 while ensuring ventilation between the blower chamber 12 and the inside of the reactor box 90.

The shielding portion 90j is a plate-shaped portion. The shielding portion 90j is made of metal. The shielding portion 90j is disposed in front of the slit 90i with a gap therebetween. In this embodiment, the side shape of the shielding portion 90j is a curved shape that extends downward from the upper edge of the slit 90i, away from the slit 90i, and then extends toward the slit 90i, but is not particularly limited. The shielding portion 90j may be formed separately from the reactor box 90, or may be formed integrally with the reactor box 90. In this modified example, the shielding portion 90j is provided only at a position corresponding to the slit 90i on the second surface 90e, but the shielding portion 90j may be provided at a position corresponding to the slit 90i on the first surface 90d.

In this modified example, the reactor box 90 is provided with a shielding portion 90j that extends downward from the upper edge of the slit 90i and is positioned in front of the slit 90i. This makes it possible to prevent water from entering the inside of the reactor box 90 through the slit 90i when water adhering to the outer surface of the reactor box 90 flows down.

Embodiment 3.
Next, an outdoor unit 1B of an air conditioner according to a third embodiment will be described with reference to Fig. 7. Fig. 7 is a cross-sectional view showing an outdoor unit 1B of an air conditioner according to a third embodiment, and corresponds to the cross-sectional view taken along line III-III shown in Fig. 2. This embodiment differs from the first embodiment in that the reactor base 92 has a plurality of fins 92c. In the third embodiment, parts that overlap with those in the first embodiment are given the same reference numerals and will not be described.

The reactor stand 92 has a plurality of fins 92c. The plurality of fins 92c are provided on the surface of the first fixing part 92a opposite to the surface to which the reactor 91 is fixed. The plurality of fins 92c are provided on the surface of the first fixing part 92a facing rearward. The plurality of fins 92c are arranged facing the first surface 90d. The plurality of fins 92c are arranged at intervals from one another in the Z-axis direction. The fins 92c are plate-shaped members. The fins 92c are made of metal.

In this embodiment, the reactor stand 92 has multiple fins 92c, so that heat transferred from the reactor 91 to the reactor stand 92 is dissipated from the fins 92c of the reactor stand 92 into the air inside the reactor box 90, allowing the reactor 91 to be cooled by natural air cooling. In this way, natural air cooling using the fins 92c allows the heat generated by the reactor 91 to be efficiently dissipated, further improving the cooling performance for the reactor 91. This suppresses the rise in temperature of the machine room 13, and further mitigates the thermal effects on elements such as resistors and capacitors.

Embodiment 4.
Next, an outdoor unit 1C of an air conditioner according to a fourth embodiment will be described with reference to Fig. 8. Fig. 8 is a cross-sectional view showing an outdoor unit 1C of an air conditioner according to a fourth embodiment, and corresponds to the cross-sectional view taken along line III-III shown in Fig. 2. This embodiment differs from the first embodiment in that the partition plate 4 does not have an opening 4a. In the fourth embodiment, parts that overlap with those in the first embodiment are given the same reference numerals and descriptions thereof will be omitted.

The partition plate 4 does not have an opening 4a between the blower chamber 12 and the machine chamber 13. No opening 4a is formed in the portion of the partition plate 4 where the reactor box 90 is arranged. The reactor box 90 is fixed to the surface of the partition plate 4 facing the blower chamber 12, and is arranged in a state where it protrudes into the blower chamber 12. The front and rear ends of the heat sink 10 are fixed to the partition plate 4 by screws 11. The heat sink 10 is fixed to the partition plate 4 by fastening the front and rear ends of the heat sink 10 to the partition plate 4 with screws 11. The front and rear ends of the heat sink 10 are fixed to the partition plate 4 by fastening the front and rear ends of the heat sink 10 to the partition plate 4 by screws 11. The front and rear ends of the heat sink 10 are fixed to the surface of the partition plate 4 facing the blower chamber 12. The first flange portion 90g and the second flange portion 90h of the reactor box 90 are fixed to the partition plate 4 by screws 11. The reactor box 90 is fixed to the partition plate 4 by fastening the first flange portion 90g and the second flange portion 90h to the partition plate 4 with screws 11. The first flange portion 90g and the second flange portion 90h are fixed to the surface of the partition plate 4 facing the blower chamber 12. The reactor stand 92 fixes the reactor 91 to the partition plate 4. The second fixing portion 92d of the reactor stand 92 extends forward in the X-axis direction from the right end of the first fixing portion 92a. The second fixing portion 92b is fixed to the partition plate 4 with screws 11. The reactor stand 92 is fixed to the partition plate 4 by fastening the second fixing portion 92b to the partition plate 4 with screws 11. The second fixing portion 92b is fixed to the partition plate 4. The second fixing portion 92b is fixed to the surface of the partition plate 4 facing the blower chamber 12.

In this embodiment, since the partition plate 4 does not have an opening 4a between the blower chamber 12 and the machine chamber 13, the heat transferred from the reactor 91 to the reactor stand 92 is not dissipated to the machine chamber 13, so that the temperature rise of the machine chamber 13 can be suppressed. In addition, the intrusion of dust, water, etc. from the blower chamber 12 to the machine chamber 13 can be prevented, and the compressor 7, the first electrical component 8e of the electrical component unit 8, the second electrical component 8f, etc. can be protected. Therefore, while suppressing the rise in temperature of the machine chamber 13, elements such as resistors and capacitors can be protected from failure. This effect can be achieved even if the opening 4a is formed in the part of the partition plate 4 where the heat sink 10 is arranged, as long as the opening 4a is not formed in the part of the partition plate 4 where the reactor box 90 is arranged. Furthermore, even if an opening 4a is formed in the portion of the partition plate 4 where the heat sink 10 is placed, if the entire opening 4a is covered by the heat sink 10, it is possible to further prevent dust, water, etc. from entering the machine room 13 from the blower room 12, and to further protect elements such as resistors and capacitors from failure.

The configurations shown in the above embodiments are merely examples, and may be combined with other known technologies, or the embodiments may be combined with each other. In addition, parts of the configurations may be omitted or modified without departing from the spirit of the invention.

1, 1A, 1B, 1C: outdoor unit of air conditioner, 2: housing, 2a: air intake, 2b: exhaust, 3: wire grill, 4: partition plate, 4a: opening, 5: blower, 6: heat exchanger, 7: compressor, 8: electrical component unit, 8a: storage box, 8b: mounting board, 8c: mounting surface, 8d: board surface, 8e: first electrical component, 8f: second electrical component, 9: reactor unit, 10: heat sink, 10a , 92c fin, 11 screw, 12 blower room, 13 machine room, 90 reactor box, 90a hole, 90b bottom surface, 90c top surface, 90d first surface, 90e second surface, 90f third surface, 90g first flange portion, 90h second flange portion, 90i slit, 90j shielding portion, 91 reactor, 92 reactor stand, 92a first fixing portion, 92b second fixing portion.

Claims

A box-shaped housing;
A partition plate that divides the inside of the housing into a blower chamber and a machine chamber;
a reactor box attached to the partition plate in a state where the reactor box protrudes from the partition plate into the blower chamber and communicates with the machine chamber;
a reactor housed inside the reactor box;
An outdoor unit of an air conditioner equipped with the above.
The outdoor unit of an air conditioner according to claim 1, wherein the reactor box has at least one slit that connects the inside and outside of the reactor box.
the reactor box has a first surface facing toward a rear surface of the housing and a second surface facing toward a front surface of the housing;
The outdoor unit for an air conditioner according to claim 2 , wherein the slit is provided in at least one of the first surface and the second surface.
The outdoor unit of an air conditioner according to claim 2 or 3, wherein the reactor box is provided with a shielding portion that extends downward from the upper edge of the slit and is positioned in front of the slit.
An outdoor unit for an air conditioner according to any one of claims 1 to 4, comprising a fixing metal plate for fixing the reactor box and the reactor.
The outdoor unit of an air conditioner according to claim 5, wherein the fixing metal plate has a plurality of fins.
an opening portion that communicates between the blower chamber and the machine chamber is formed in a portion of the partition plate where the reactor box is disposed;
The outdoor unit for an air conditioner according to any one of claims 1 to 6, wherein the reactor box is arranged in a state of protruding into the blower chamber through the opening.