Outdoor unit for air conditioner

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

[0001] The present disclosure relates to an outdoor unit of an air conditioner that includes a reactor.

[0002] Conventional outdoor units for air conditioners typically have a structure in which the interior of the housing is divided into a fan compartment and a mechanical compartment by a partition plate, with the fan, heat exchanger, etc. located in the fan compartment and the compressor, reactor, electrical component unit, etc. located in the mechanical compartment. The electrical component unit contains electrical components that control the operation of the fan and compressor.

[0003] In the outdoor unit of a conventional air conditioner, driving the blower draws in outside air into the blower chamber, which either expels heat from the heat exchanger into the atmosphere or expels cool air from the blower chamber into the atmosphere. The blower chamber is a space exposed to the outside air, making it susceptible to the intrusion of dust, water, and other particles. On the other hand, the machinery chamber houses the compressor, reactor, and electrical components of the electrical component unit, which are vulnerable to dust and water, and is therefore separated from the blower chamber by a partition plate, making it an enclosed space that is less susceptible to the intrusion of dust, water, and other particles.

[0004] During operation of an air conditioner, heat is generated from the compressor, reactor, and electrical components of the electrical component unit, causing the temperature in the machine room to rise. This rise in the temperature in the machine room causes problems, such as thermal degradation of elements such as resistors and capacitors. The reactor generates a large amount of heat, so it is necessary to cool it. One method for cooling the reactor is to use natural air cooling alone, as described in Patent Document 1.

[0005] JP 2016-50726 A

[0006] However, due to the recent trend toward larger currents in reactors, there is a problem that cooling the reactor by natural air cooling alone as in Patent Document 1 is insufficient.

[0007] The present disclosure has been made in view of the above, and has an object to provide an outdoor unit for an air conditioner that can improve the cooling performance for a reactor.

[0008] In order to solve the above-mentioned problems and achieve the objectives, the outdoor unit of an air conditioner according to the present disclosure comprises a box-shaped housing, a partition plate that divides the interior of the housing into a blower chamber and a machine chamber, a reactor box that is attached to the partition plate in a state where it protrudes from the partition plate into the blower chamber and communicates with the machine chamber, and a reactor housed inside the reactor box.

[0009] The outdoor unit of an air conditioner according to the present disclosure has the effect of improving the cooling performance for the reactor.

[0010] 2 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 in FIG. 2; a view from the direction of arrow B in FIG. 4 is a cross-sectional view showing an outdoor unit of an air conditioner according to a modified example of the second embodiment; 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 in FIG. 2; 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 in FIG.

[0011] Hereinafter, an outdoor unit of an air conditioner according to an embodiment will be described in detail with reference to the drawings.

[0012] Embodiment 1. Fig. 1 is a front view showing the appearance of an outdoor unit 1 of an air conditioner according to Embodiment 1. Fig. 2 is a front view showing the internal structure of the outdoor unit 1 of the air conditioner according to Embodiment 1. 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 also 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 also be simply referred to as the outdoor unit 1.

[0013] Hereinafter, when describing the directions of each component of the outdoor unit 1, the depth direction of the outdoor unit 1 will be referred to 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. The + direction in the X-axis direction will be referred to as the forward direction, and the - direction in the X-axis direction will be referred to as the rearward direction. 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. The + direction in the Y-axis direction is referred to as the upward direction, and the - direction in the Y-axis direction is referred to 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. The + direction in the Z-axis direction is referred to as the rightward direction, and the - direction in the Z-axis direction is referred to as the leftward direction. 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 direction in 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.

[0014] As shown in FIGS. 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 FIG. 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 from outside the housing 2 to flow into the fan chamber 12, which will be described later. As shown in FIG. 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 fan 5 to the outside of the fan chamber 12. The heat from the heat exchanger 6 or the cool air from the fan chamber 12 is discharged to the outside of the fan chamber 12 through the exhaust port 2b together with the airflow generated by the fan 5.

[0015] The wire grill 3 is a member that covers the air inlet 2a to allow ventilation. The wire grill 3 is made of metal.

[0016] As shown in Figure 2, the partition plate 4 is a member that divides the interior of the housing 2 into a fan chamber 12 and a machine chamber 13. The partition plate 4 is made of metal. The fan 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. An opening 4a that connects the fan chamber 12 and the machine chamber 13 is formed in the partition plate 4.

[0017] The blower 5 is a device disposed in the blower chamber 12 and generates an airflow. The blower 5 is electrically connected to a mounting board 8b (described later) of the electric component unit 8 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 through the air intake port 2a. The air that has flowed into the blower chamber 12 passes through the heat exchanger 6, is formed into an airflow by the blower 5, and is discharged to the outside of the blower chamber 12 through the exhaust port 2b shown in FIG. 1.

[0018] The heat exchanger 6 is disposed in the blower chamber 12 and serves to exchange heat between the refrigerant and the outdoor air. The outdoor air to be taken into the blower 5 passes through the heat exchanger 6. The heat exchanger 6 is made of metal.

[0019] The compressor 7 is disposed in the machine chamber 13 and compresses the refrigerant flowing through the heat exchanger 6. The compressor 7 is disposed in a lower space within the machine chamber 13. The compressor 7 is electrically connected to a mounting board 8b (described later) of the electric component unit 8 via an electric wire (not shown). Although not shown, a plurality of refrigerant pipes through which the refrigerant flows are disposed in the machine chamber 13. The refrigerant pipes are connected to an indoor unit (not shown), the compressor 7, the heat exchanger 6, etc.

[0020] The electric part unit 8 is disposed in the machine room 13. The electric part unit 8 is disposed above the compressor 7 and spaced apart from the compressor 7. The electric part unit 8 has a housing box 8a.

[0021] FIG. 3 is a cross-sectional view taken along line III-III in FIG. 2. Arrow A in FIG. 3 indicates the direction of airflow generated by blower 5. Wavy arrows in FIG. 3 indicate heat flow. A chain line in FIG. 3 indicates a boundary C between blower chamber 12 and machine chamber 13. For ease of understanding, FIG. 3 does not include hatching on first electrical component 8e, second electrical component 8f, fins 10a, and reactor 91. As shown in FIG. 3, electrical component unit 8 has a mounting board 8b that controls operation of outdoor unit 1. Mounting board 8b is housed inside housing box 8a shown in FIG. 2.

[0022] The mounting board 8b is disposed in the machine chamber 13. The mounting board 8b has a mounting surface 8c facing toward the blower chamber 12 and a board surface 8d facing the opposite side of 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 insulated gate bipolar transistor (IGBT), a diode, or an intelligent power module (IPM). The second electrical component 8f is attached to the board surface 8d. The second electrical component 8f is, for example, a common mode coil.

[0023] A heat sink 10 is attached to a portion of the first electric component 8e facing the fan chamber 12. The heat sink 10 serves to cool the first electric component 8e. The heat sink 10 has a plurality of fins 10a extending toward the fan chamber 12. An opening 4a connecting the fan 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 disposed. The fins 10a of the heat sink 10 are disposed in the fan 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 fan 5. The heat sink 10 is cooled by the airflow generated by the fan 5.

[0024] 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. A rear end portion, which is one end portion of the heat sink 10 in the X-axis direction, is fixed to the partition plate 4 with screws 11. A front end portion, which is the other end portion of the heat sink 10 in the X-axis direction, is fixed to a reactor base 92 (described later) with screws 11.

[0025] The reactor unit 9 is attached to the partition plate 4 while being disposed in the fan chamber 12 through the opening 4a of the partition plate 4. The reactor unit 9 includes a reactor box 90, a reactor 91, and a reactor stand 92.

[0026] The reactor box 90 is a box-shaped member having a hole 90a formed therein that opens toward the machine room 13. The interior 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 disposed 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 exposed to the airflow generated by the blower 5. The reactor box 90 is cooled by the airflow generated by the blower 5.

[0027] The reactor box 90 is attached to the partition plate 4 so as to cover a portion of the opening 4a. The entire opening 4a may be covered by the reactor box 90 and the heat sink 10. In this way, it is possible to prevent dust, water, and the like from entering the machine room 13 from the blower room 12 through the opening 4a.

[0028] 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.

[0029] 2, the bottom surface 90b extends horizontally as it moves away from the machine chamber 13 along the Z-axis direction, and then extends at an angle upward. The top surface 90c is disposed above and spaced apart from the bottom surface 90b. The top surface 90c extends horizontally in the Z-axis direction.

[0030] 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 extending rearward in the X-axis direction is formed on the right end of the first surface 90d.

[0031] The second surface 90e connects the front end of the bottom surface 90b and 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 extending forward in the X-axis direction is formed at the right end of the second surface 90e. The second flange portion 90h is fixed to the partition plate 4 with screws 11. The second flange portion 90h is fixed to the edge of the opening 4a of the partition plate 4.

[0032] 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 reactor 91 from the hole 90a.

[0033] The reactor 91 is housed inside the reactor box 90. The reactor 91 is an electrical component that is part of an inverter that controls the speed of the compressor 7.

[0034] The reactor stand 92 is a fixing metal plate 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.

[0035] 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 with screws 11. The reactor 91 is fixed to the surface of the first fixing portion 92a facing forward. The second fixing portion 92b extends from the right end of the first fixing portion 92a toward the rear in the X-axis direction. 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 with screws 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 base 92 and the heat sink 10.

[0036] Next, the effects of the outdoor unit 1 according to the first embodiment will be described.

[0037] 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 port 2a. The air that has flowed into the blower chamber 12 passes through the heat exchanger 6, is formed into an air flow by the blower 5, and is discharged to the outside of the blower chamber 12 through the exhaust port 2b shown in FIG.

[0038] When the blower 5 is driven, the first electric component 8e, the second electric component 8f, and the reactor 91 shown in Fig. 3 generate heat. The heat generated from the first electric 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 electric component 8e can be cooled by natural air cooling. Furthermore, 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 electric component 8e can be efficiently dissipated by natural air cooling and forced air cooling.

[0039] Heat generated from the second electrical component 8f is dissipated into the air in the machine chamber 13, allowing the second electrical component 8f to be cooled by natural air cooling. A thermally conductive insulating member (not shown) may be sandwiched between the mounting surface 8c of the mounting board 8b and the second fixing portion 92b of the reactor base 92 and attached to the mounting board 8b near the second electrical component 8f. In this configuration, heat generated from the second electrical component 8f is transferred in the order of the mounting board 8b, the thermally conductive insulating member, and the reactor base 92, and then from the reactor base 92 to the heat sink 10 and the reactor box 90. The airflow generated by the blower 5 then hits the heat sink 10 and the reactor box 90, allowing the heat sink 10 and the reactor box 90 to be cooled by forced air cooling. In this configuration, heat generated from the second electrical component 8f can be efficiently dissipated by natural air cooling and forced air cooling.

[0040] 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 while protruding from the partition plate 4 into the blower chamber 12, so that the airflow generated by the blower 5 hits the reactor box 90, allowing the reactor box 90 to be cooled by forced air cooling. In this way, the forced air cooling allows the heat generated from the reactor 91 to be efficiently dissipated, thereby improving the cooling performance for the reactor 91 compared to when the heat generated from the reactor 91 is dissipated by natural air cooling alone. Therefore, the temperature rise in the machine chamber 13 can be suppressed, and the thermal effects on elements such as resistors and capacitors can be mitigated.

[0041] In this embodiment, the outdoor unit 1 is provided with a reactor stand 92 that fixes the reactor box 90 and the reactor 91 , so that heat generated from the reactor 91 is easily transferred to the reactor box 90 .

[0042] In this embodiment, an opening 4a that connects the fan chamber 12 and the machine chamber 13 is formed in the portion of the partition plate 4 where the reactor box 90 is disposed, and heat generated in the machine chamber 13 is dissipated into the air in the fan chamber 12 through the opening 4a. This makes it possible to suppress a rise in the temperature of the machine chamber 13 and mitigate the thermal effects on elements such as resistors and capacitors. Note that the opening 4a does not necessarily have to be provided in the partition plate 4.

[0043] Second Embodiment 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 the outdoor unit 1A of an air conditioner according to the second embodiment, and corresponds to the cross-sectional view taken along line III-III in Figure 2. Figure 5 is a view seen from the direction of arrow B 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 designated by the same reference numerals, and description thereof will be omitted.

[0044] As shown in FIG. 4 , the reactor box 90 is provided with slits 90i that communicate between the inside and outside of the reactor box 90. The slits 90i are located in the blower chamber 12. In this embodiment, the number of slits 90i is six, but at least one slit is sufficient. In this embodiment, the slits 90i are provided on both the first surface 90d and the second surface 90e, 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.

[0045] As shown in FIG. 5 , the three slits 90i on the second surface 90e are spaced apart from one another in the Z-axis direction. In this embodiment, the shape of the slits 90i when viewed along the penetration direction of the slits 90i is generally triangular. The shape of the slits 90i when viewed along the penetration direction of the slits 90i is not particularly limited as long as it allows the airflow generated by the blower 5 to pass through. In this embodiment, the extension direction of the slits 90i is the vertical direction along the Y-axis direction, but it may also 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 on the first surface 90d may be the same as or different from the arrangement, shape, and extension direction of the slits 90i on the second surface 90e.

[0046] 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, allowing the airflow generated by the blower 5 to flow through the inside of the reactor box 90. As a result, the airflow hits the reactor 91, allowing the reactor 91 to be cooled by forced air cooling. In this way, the forced air cooling allows the heat generated by the reactor 91 to be dissipated more efficiently, thereby further improving the cooling performance for the reactor 91. 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.

[0047] 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, airflow flows into the reactor box 90 through the slits 90i provided on the first surface 90d and is discharged to the outside of the reactor box 90 through the slits 90i provided on the second surface 90e. Therefore, heat generated from the reactor 91 is discharged to the outside of the reactor box 90 together with the airflow through the slits 90i provided on the second surface 90e. By discharging the heat generated from the reactor 91 to the outside of the reactor box 90 in this manner, the heat generated from the reactor 91 can be dissipated more efficiently, thereby further improving the cooling performance for the reactor 91. Therefore, it is possible to suppress the temperature rise in the machine chamber 13 and further mitigate the thermal effects on elements such as resistors and capacitors. Note that 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.

[0048] 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 reactor box 90 while ensuring ventilation between the blower chamber 12 and the interior of the reactor box 90.

[0049] 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, first away from the slit 90i, and then toward the slit 90i, but is not particularly limited thereto. The shielding portion 90j may be formed separately from the reactor box 90 or 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. However, the shielding portion 90j may also be provided at a position corresponding to the slit 90i on the first surface 90d.

[0050] In this modification, 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, thereby preventing water from entering the reactor box 90 through the slit 90i when water adhering to the outer surface of the reactor box 90 flows down.

[0051] Third Embodiment 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 the 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 designated by the same reference numerals, and description thereof will be omitted.

[0052] The reactor base 92 has a plurality of fins 92c. The plurality of fins 92c are provided on a surface of the first fixing portion 92a opposite to the surface to which the reactor 91 is fixed. The plurality of fins 92c are provided on a surface of the first fixing portion 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.

[0053] In this embodiment, the reactor table 92 has a plurality of fins 92c, so that heat transferred from the reactor 91 to the reactor table 92 is dissipated from the fins 92c of the reactor table 92 into the air inside the reactor box 90, thereby cooling the reactor 91 by natural air cooling. In this way, natural air cooling using the fins 92c can efficiently dissipate heat generated from the reactor 91, thereby further improving the cooling performance for the reactor 91. 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 alleviated.

[0054] Fourth Embodiment 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 the fourth embodiment, and corresponds to the cross-sectional view taken along line III-III 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 designated by the same reference numerals, and description thereof will be omitted.

[0055] The partition plate 4 does not have an opening 4a between the blower chamber 12 and the machine chamber 13. The partition plate 4 does not have an opening 4a in a portion where the reactor box 90 is disposed. The reactor box 90 is fixed to the surface of the partition plate 4 facing the blower chamber 12 and is disposed 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 with 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 the 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 with 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 fan chamber 12. The reactor base 92 fixes the reactor 91 to the partition plate 4. The second fixing portion 92d of the reactor base 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 base 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 surface of the partition plate 4 facing the fan chamber 12.

[0056] In this embodiment, the partition plate 4 does not have an opening 4a between the blower chamber 12 and the machinery chamber 13. This prevents heat transferred from the reactor 91 to the reactor base 92 from being dissipated to the machinery chamber 13, thereby suppressing a rise in temperature in the machinery chamber 13. This also prevents dust, water, and the like from entering the machinery chamber 13 from the blower chamber 12, protecting the compressor 7, the first electrical component 8e, the second electrical component 8f, and the like of the electrical component unit 8. This prevents a rise in temperature in the machinery chamber 13 while protecting elements such as resistors and capacitors from failure. This effect can be achieved even if the opening 4a is formed in the portion of the partition plate 4 where the heat sink 10 is disposed, as long as the opening 4a is not formed in the portion of the partition plate 4 where the reactor box 90 is disposed. Furthermore, even if an opening 4a is formed in the part 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.

[0057] The configurations shown in the above embodiments are merely examples, and may be combined with other known technologies, or different embodiments may be combined with each other. It is also possible to omit or modify parts of the configurations as long as they do not deviate from the gist of the invention.

[0058] REFERENCE SIGNS LIST 1, 1A, 1B, 1C Outdoor unit of air conditioner, 2 Housing, 2a Air intake port, 2b Exhaust port, 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 chamber, 13 Machine chamber, 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 base, 92a first fixture, 92b second fixture.

Claims

1. 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; a fixing metal plate for fixing the reactor box and the reactor; A heat sink disposed on the partition plate; Equipped with The reactor box is fixed to the partition plate via the fixing metal plate and the heat sink.

2. An outdoor unit of an air conditioner as described in claim 1, including electrical components attached to the heat sink.

3. 2. The outdoor unit of an air conditioner according to claim 1, wherein the reactor box is provided with at least one slit that connects the inside and the outside of the reactor box.

4. 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 3 , wherein the slit is provided in at least one of the first surface and the second surface.

5. The outdoor unit for an air conditioner according to claim 3 , wherein the reactor box is provided with a shielding portion that extends downward from an upper edge of the slit and is disposed in front of the slit.

6. 2. The outdoor unit of an air conditioner according to claim 1, wherein the fixing metal plate has a plurality of fins.

7. 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.