Outdoor unit control box

Abstract

This outdoor unit control box comprises: a housing having a side wall portion; an electric component provided inside the housing; a ventilation opening which is provided in the side wall portion and which communicates with the outside of the housing; and a lid which is provided overlapping the ventilation opening and which has a plurality of first through-holes.

Description

[Technical Field]

[0001] The present disclosure relates to a control box for an outdoor unit. [Background technology]

[0002] In refrigeration cycle devices such as air conditioners, chillers, and water heaters, a control box containing a control board for controlling the compressor, motor, etc. of the refrigeration cycle device is provided inside the outdoor unit. For example, in the air conditioner described in Patent Document 1, an electrical component box equipped with a control board is provided in the outdoor unit. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2010-121857 Summary of the Invention [Problem to be solved by the invention]

[0004] Patent Document 1 discloses an insect-proof structure for preventing small animals such as insects and geckos from entering the interior of an electrical equipment box. Patent Document 1 proposes arranging elliptical air intakes in a straight line at predetermined intervals to prevent small animals from entering the interior of the electrical equipment box through the air intake and exhaust ports, and using the gap between the box body and the lid of the electrical equipment box as an exhaust port.

[0005] The air intake and exhaust ports of the electrical equipment box in Patent Document 1 correspond to ventilation ports for keeping the temperature inside the control box within a predetermined range. Depending on the configuration of the control box, it may be necessary to increase the opening area of ​​the ventilation port in order to keep the temperature of the electrical components stored in the control box within a guaranteed operating temperature range. However, increasing the opening area of ​​the ventilation port poses a problem in that small animals may enter the control box through the ventilation port.

[0006] The present disclosure has been made to solve the above-mentioned problems, and aims to provide a control box for an outdoor unit that can prevent small animals such as insects and geckos from entering the interior of the control box through the ventilation holes in the control box. [Means for solving the problem]

[0007] A control box for an outdoor unit according to the present disclosure includes a housing having a side wall portion, electrical components provided inside the housing, a ventilation port provided in the side wall portion and communicating with the outside of the housing, and a lid body provided over the ventilation port and having a plurality of first through holes, wherein the portion of the side wall portion where the ventilation port is provided has a double-wall structure of an outer side wall portion and an inner side wall portion, a space is provided between the outer side wall portion and the inner side wall portion, the ventilation port includes an outer ventilation port that penetrates the outer side wall portion, and an inner ventilation port that penetrates the inner side wall portion and is provided at a position that does not overlap with the outer side wall portion in the horizontal and vertical directions, the space between the outer ventilation port and the inner ventilation port is an air passage connecting the outside of the housing to the inside of the housing, and the lid body is provided over the inner ventilation port. The side wall portion is a metal plate, the outer side wall portion has a slit and a protrusion that protrudes outward from the housing by bending the metal plate adjacent to the slit, and the outer ventilation port is a gap formed between a lower end of the protrusion and the slit. . Further, a control box for an outdoor unit according to the present disclosure includes a housing having a side wall portion, electrical components provided inside the housing, a ventilation port provided in the side wall portion and communicating with the outside of the housing, and a cover provided on top of the ventilation port and having a plurality of first through holes, wherein the portion of the side wall portion where the ventilation port is provided has a double-wall structure of an outer side wall portion and an inner side wall portion, a space is provided between the outer side wall portion and the inner side wall portion, and the ventilation port includes an outer ventilation port penetrating the outer side wall portion and a cover provided on the outer side wall portion. The housing has an inner ventilation port that penetrates the inner side wall portion and is located at a position where the outer ventilation port and the inner ventilation port do not overlap in the horizontal and vertical directions, the space between the outer ventilation port and the inner ventilation port is an air passage that connects the outside of the housing to the inside of the housing, the lid body is located on top of the inner ventilation port, and the lid body has a handle that is formed by bending a part of the lid body and protruding from the end, and the lid body is located so that the handle protrudes toward the inside of the housing. [Effects of the Invention]

[0008] In the control box for an outdoor unit according to the present disclosure, the ventilation opening, which is provided in communication with the outside of the housing, is covered by a cover having a plurality of first through holes. The cover prevents small animals from easily entering the interior of the control box, thereby preventing small animals from entering the interior of the control box through the ventilation opening of the control box. This prevents small animals from coming into contact with electrical components provided in the control box and causing a ground fault. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 2 is a perspective view showing the inside of the outdoor unit according to the embodiment. [Figure 2] 4 is a view of a ventilation opening in a control box of an outdoor unit according to an embodiment, observed from outside the control box. FIG. [Figure 3] 4 is a view of a ventilation opening in a control box of an outdoor unit according to an embodiment, observed from inside the control box. FIG. [Figure 4] 10 is a diagram showing a state in which a cover is attached to a ventilation opening in a control box of an outdoor unit according to an embodiment. FIG. [Figure 5] 4 is an enlarged view of a ventilation opening in a control box of an outdoor unit according to an embodiment, observed from outside the control box. FIG. [Figure 6] 10 is a diagram showing a state in which a cover is not attached to a ventilation opening in the control box of the outdoor unit according to the embodiment. FIG. [Figure 7] FIG. 2 is a perspective view showing a lid according to the embodiment. [Figure 8] FIG. 2 is a side view showing the lid according to the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, an embodiment of a control box for an outdoor unit according to the present disclosure will be described with reference to the drawings. The present disclosure is not limited to the following embodiment, and various modifications are possible without departing from the spirit of the present disclosure. Furthermore, the present disclosure includes all possible combinations of the configurations shown in the following embodiment. In each drawing, the same reference numerals denote the same or equivalent components, and this applies throughout the entire specification. Note that the relative dimensional relationships or shapes of the components in each drawing may differ from those in reality.

[0011] Embodiment Fig. 1 is a perspective view showing the inside of an outdoor unit 100 according to an embodiment. As shown in Fig. 1, the outdoor unit 100 includes a control box 1, a compressor 102, and a transformer 103 inside a rectangular parallelepiped outdoor unit housing 101 that forms the outer shell. One of the plates that form the side of the outdoor unit housing 101 is configured to be removable, and Fig. 1 shows this plate removed.

[0012] The control box 1 houses the electric components 12. The electric components 12 include electronic components arranged on a control board. For example, the electric components 12 include a microcomputer that controls the compressor 102 and has a CPU, ROM, RAM, I / O ports, etc. The transformer 103 converts voltage. The current converted by the transformer 103 is used by the electric components 12 to drive the compressor 102, for example.

[0013] In addition to the control box 1, compressor 102, and transformer 103, the outdoor unit housing 101 also contains, although not shown, a heat exchanger for exchanging heat between the refrigerant and the air outside the outdoor unit housing 101, a flow path switching device for switching the flow of the refrigerant, a flow control device for reducing the pressure of the refrigerant, and an outdoor fan for sending air to the heat exchanger. The compressor 102, flow path switching device, flow control device, and heat exchanger are connected by refrigerant piping. The refrigerant piping is also not shown.

[0014] The outdoor unit 100 is used as part of a refrigeration cycle device. For example, the outdoor unit 100 can be used as a heat pump heat source unit of a heat pump water heater. When the outdoor unit 100 is used as a heat pump heat source unit, the outdoor unit 100 is connected to a hot water tank via a heat medium piping. The outdoor unit 100 can also be used as an outdoor unit of a direct expansion type air conditioner. When the outdoor unit 100 is used as an outdoor unit of a direct expansion type air conditioner, the outdoor unit 100 is connected to an indoor unit having a load-side heat exchanger via a refrigerant piping. The outdoor unit 100 may also be used as part of other refrigeration cycle devices such as a chiller, an indirect expansion type air conditioner, and a heat storage device.

[0015] Next, the control box 1 of the outdoor unit 100 will be described with reference to Figures 2 to 4. Figure 2 is a view of the ventilation opening 13 in the control box 1 of the outdoor unit 100 according to the embodiment, observed from outside the control box 1. Figure 3 is a view of the ventilation opening 13 in the control box 1 of the outdoor unit 100 according to the embodiment, observed from inside the control box 1. Figure 4 is a view showing a state in which a cover 20 is attached to the ventilation opening 13 in the control box 1 of the outdoor unit 100 according to the embodiment.

[0016] As shown in Figures 2 and 3, the control box 1 includes a housing 10 and a ventilation opening 13. The housing 10 has a side wall portion 11. The electrical components 12 are provided inside the housing 10. The ventilation opening 13 is provided in the side wall portion 11. The ventilation opening 13 penetrates the side wall portion 11, and the outside of the housing 10 communicates with the inside of the housing 10 via the ventilation opening 13.

[0017] The portion of the side wall 11 where the ventilation opening 13 is provided has a double structure made up of an outer side wall 11a shown in Fig. 2 and an inner side wall 11b shown in Fig. 3. The outer side wall 11a has a convex shape that faces outward from the housing 10. A space is provided between the outer side wall 11a and the inner side wall 11b.

[0018] The ventilation opening 13 has an outer ventilation opening 13a shown in FIG. 2 and an inner ventilation opening 13b shown in FIG. 3. The outer ventilation opening 13a penetrates the outer side wall portion 11a. The inner ventilation opening 13b penetrates the inner side wall portion 11b. The outer ventilation opening 13a and the inner ventilation opening 13b are in communication with each other through a space provided between the outer side wall portion 11a and the inner side wall portion 11b. The outside of the housing 10 is in communication with the inside of the housing 10 through the outer ventilation opening 13a and the inner ventilation opening 13b of the ventilation opening 13. The space provided between the outer side wall portion 11a and the inner side wall portion 11b forms an air passage 13c (see FIG. 3) of the ventilation opening 13. The outer side wall portion 11a and the outer ventilation opening 13a will be described in detail later with reference to FIG. 5. The inner side wall portion 11b and the inner ventilation opening 13b will be described in detail later with reference to FIG. 6.

[0019] As shown in FIG. 4, the control box 1 further includes a lid 20 disposed over the ventilation opening 13, and a sealant 15 disposed between the side wall 11 and the lid 20. The lid 20 is disposed so as to close the inner ventilation opening 13b of the ventilation opening 13 from the inside of the housing 10. The lid 20 is fastened to the inner side wall 11b by screws 18. The screws 18 are, for example, upset bolts having hexagonal heads. The screws 18 are fastened with a tool such as a wrench or ratchet wrench. The lid 20 has a plurality of first through holes 21 and a handle 23. Details of the lid 20 will be described later with reference to FIGS. 7 and 8.

[0020] The sealing material 15 is provided so as to prevent a gap from being formed between the side wall portion 11 and the lid body 20. The sealing material 15 is made of a material having elasticity and sealing properties. The sealing material 15 is, for example, a foam sealing material made of ethylene propylene rubber or the like.

[0021] Next, the outer side wall portion 11a and the outer ventilation opening 13a will be described with reference to Figure 5. Figure 5 is an enlarged view of the ventilation opening 13 in the control box 1 of the outdoor unit 100 according to the embodiment, observed from outside the control box 1. In Figure 5, four outer ventilation openings 13a are provided in the outer side wall portion 11a. However, the number of outer ventilation openings 13a may be one or more. Hereinafter, when referring to an "outer ventilation opening 13a," this includes both the singular and the plural.

[0022] The outer side wall 11a is a portion of the side wall 11 formed so as to protrude outward from the housing 10. For example, the outer side wall 11a is formed by pressing a portion of the side wall 11, which is a metal plate, to form a convex shape. Alternatively, an opening may be provided in the side wall 11, and a convex-shaped part may be attached as the outer side wall 11a to close the opening.

[0023] The outermost protruding portion of the outer side wall 11a is flat. The outer ventilation opening 13a is provided in the outermost protruding flat portion of the outer side wall 11a. The outer side wall 11a has a protrusion 14 and a slit 16 in the outermost protruding flat portion of the outer side wall 11a. The protrusion 14 and the slit 16 are adjacent to each other. When the outer side wall 11a is viewed from the front, the lower end 14a of the protrusion 14 and the slit 16 overlap. The protrusion 14 is, for example, a portion of the outer side wall 11a formed by press working so as to protrude outside the housing 10. The lower end 14a of the protrusion 14 protrudes outside the housing 10 from the slit 16. As a result, a gap is formed between the protrusion 14 and the slit 16. This gap formed between the protrusion 14 and the slit 16 is the outer ventilation opening 13a.

[0024] Next, the inner sidewall portion 11b and the inner ventilation opening 13b will be described with reference to Figure 6. Figure 6 is a diagram showing a state in which the cover 20 is not attached to the ventilation opening 13 in the control box 1 of the outdoor unit 100 according to the embodiment. Like Figure 2, Figure 6 is a diagram showing the ventilation opening 13 observed from inside the control box 1. As shown in Figure 6, the inner ventilation opening 13b is provided at the top of the inner sidewall portion 11b. When the ventilation opening 13 is observed from inside the control box 1, the outer ventilation opening 13a provided in the outer sidewall portion 11a is not visible due to the inner sidewall portion 11b. The inner ventilation opening 13b and the outer ventilation opening 13a do not overlap in the horizontal or vertical directions.

[0025] The side wall 11 has an outer side wall 11a that protrudes outward from the housing 10. Therefore, a space is formed inside the outer side wall 11a. The inner side wall 11b is provided to separate the space formed inside the outer side wall 11a from the internal space of the housing 10. The space between the outer side wall 11a and the inner side wall 11b forms an air passage 13c between the outer ventilation opening 13a (see FIG. 5) and the inner ventilation opening 13b.

[0026] The inner ventilation opening 13b is provided so as to penetrate the inner sidewall portion 11b. Therefore, as shown in FIG. 6, a portion of the space formed inside the outer sidewall portion 11a can be seen from inside the housing 10. The inner sidewall portion 11b is only required to be provided so as to separate a portion of the space inside the outer sidewall portion 11a from the internal space of the housing 10. Therefore, the inner ventilation opening 13b does not need to be provided so as to penetrate the inner sidewall portion 11b. For example, the space inside the outer sidewall portion 11a may be separated from the internal space of the housing 10 by the inner sidewall portion 11b having a size that exposes a portion of the internal space of the outer sidewall portion 11a. In this case, the exposed portion of the outer sidewall portion 11a on the inside of the housing 10 is the inner ventilation opening 13b.

[0027] The inner side wall portion 11b has a screw hole 17. A screw 18 (see FIG. 4) for screwing the lid 20 is fixed in the screw hole 17. The screw hole 17 may have a burring shape formed by raising the periphery of the hole. A method for fixing the screw 18 in the screw hole 17 will be described later with reference to the lid 20 in FIG.

[0028] Further, fitting holes 19 are provided in the inner side wall portion 11b. In FIG. 6, two fitting holes 19 are provided with a screw hole 17 therebetween. There is no particular limitation on the number of fitting holes 19, as long as there is one or more fitting holes 19. A protrusion 24 provided on the lid body 20 is fitted into the fitting holes 19. The relationship between the protrusion 24 of the lid body 20 and the fitting holes 19 and the protrusion 24 of the lid body 20 will be described with reference to FIGS. 7 and 8.

[0029] Fig. 7 is a perspective view showing the lid 20 according to the embodiment. Fig. 8 is a side view showing the lid 20 according to the embodiment. The lid 20 has a second through hole 22. A screw 18 is inserted into the second through hole 22 and fixed to the screw hole 17. Therefore, the lid 20 is screwed to the inner side wall portion 11b.

[0030] The cover 20 is a metal plate and has a plurality of first through holes 21. The first through holes 21 are, for example, punch holes formed by perforating the metal plate of the cover 20. The plurality of first through holes 21 are provided to ensure ventilation and prevent the temperature inside the housing 10 from rising. However, the number of first through holes 21 is not particularly limited. Each of the plurality of first through holes 21 has a circular shape. The diameter of the circular shape is 3 mm or less. In FIG. 7, the diameter of the first through hole 21 is smaller than the diameter of the second through hole 22 into which the screw 18 is inserted. However, the diameter of the second through hole 22 may be smaller than the diameter of the first through hole 21.

[0031] The lid 20 has a handle 23. The handle 23 is formed by bending a portion of the lid 20, which is a metal plate. As shown in FIG. 7, the handle 23 protrudes perpendicularly from the end of the lid 20. The lid 20 is screwed to the inner side wall 11b so that the handle 23 protrudes toward the inside of the housing 10 (see FIG. 4).

[0032] The lid 20 also has protrusions 24. As shown in FIG. 8 , the protrusions 24 protrude from the flat surface of the lid 20 in the direction opposite the handle 23. The protrusions 24 are formed, for example, by pressing a portion of the lid 20 to protrude. The lid 20 is screwed to the inner side wall 11b with the protrusions 24 fitted into the fitting holes 19 in the inner side wall 11b. The protrusions 24 of the lid 20 and the fitting holes 19 in the inner side wall 11b are provided in pairs. Since one protrusion 24 of the lid 20 is paired with two fitting holes 19 in the inner side wall 11b, the number of protrusions 24 is equal to the number of fitting holes 19. The lid 20 is screwed to the inner side wall 11b by the pair of protrusions 24 and the fitting holes 19, firmly securing the lid 20 to the inner side wall 11b. Therefore, the lid 20 is unlikely to shift from its installed position.

[0033] 7 shows two protrusions 24 arranged on either side of the second through hole 22. Each of the two protrusions 24 shown in FIG. 7 is fitted into one of two fitting holes 19 arranged on either side of the screw hole 17 shown in FIG. 6. Therefore, two pairs of the two protrusions 24 and the two fitting holes 19 are formed. The lid 20 is fixed to the inner side wall portion 11b by the two pairs of the protrusions 24 and the fitting holes 19, and therefore is prevented from rotating in the screwed state.

[0034] The above describes the housing 10 in which the side wall 11 has a double structure including the outer side wall 11a and the inner side wall 11b. The double structure of the housing 10 allows the outer ventilation opening 13a and the inner ventilation opening 13b to be positioned so that they do not overlap in the horizontal and vertical directions. That is, the outer ventilation opening 13a and the inner ventilation opening 13b can be positioned so that they do not directly oppose each other, so that the interior of the control box 1 cannot be easily reached from the outer ventilation opening 13a through the inner ventilation opening 13b. Therefore, even if small animals, rainwater, snow, or the like enter the interior of the outdoor unit housing 101, the small animals, rainwater, snow, or the like can be prevented from further entering the interior of the control box 1.

[0035] As described above, the control box 1 of the outdoor unit 100 according to this embodiment comprises a housing 10 having a side wall portion 11, electrical components 12 provided inside the housing 10, a ventilation opening 13 provided in the side wall portion 11 and communicating with the outside of the housing 10, and a lid body 20 provided on top of the ventilation opening 13 and having a plurality of first through holes 21.

[0036] According to this configuration, the lid 20 is provided over the ventilation opening 13. The lid 20 has a plurality of first through holes 21, ensuring ventilation of the housing 10 of the control box 1. This prevents the temperature inside the housing 10 from rising to a level that would affect the operation of the electrical components 12. Furthermore, the lid 20 provided over the ventilation opening 13 makes it difficult for small animals such as insects and geckos to enter the housing 10 through the ventilation opening 13. That is, the lid 20 can prevent small animals from entering the control box 1 while ensuring ventilation of the control box 1. If a small animal does enter the control box 1, it may come into contact with the electrical components 12, causing a ground fault. However, in this embodiment, the lid 20 prevents small animals from entering the control box 1, thereby preventing a ground fault from occurring inside the control box 1.

[0037] In addition, in this embodiment, the portion of the side wall portion 11 where the ventilation opening 13 is provided has a double-wall structure consisting of an outer side wall portion 11a and an inner side wall portion 11b, and a space is provided between the outer side wall portion 11a and the inner side wall portion 11b. The ventilation opening 13 has an outer ventilation opening 13a that penetrates the outer side wall portion 11a and an inner ventilation opening 13b that penetrates the inner side wall portion 11b, and the space between the outer ventilation opening 13a and the inner ventilation opening 13b is an air passage 13c that connects the outside of the housing 10 with the inside of the housing 10, and the lid body 20 is provided on top of the inner ventilation opening 13b.

[0038] According to this configuration, small animals that enter through outer ventilation opening 13a cannot enter the interior of housing 10 without passing through ventilation path 13c and inner ventilation opening 13b. Furthermore, to enter the interior of housing 10, small animals must pass through first through-hole 21 of lid 20, which is provided on top of inner ventilation opening 13b. Because the path from outer ventilation opening 13a to the interior of housing 10 is complicated, small animals can be further prevented from entering the interior of housing 10.

[0039] In addition, in this embodiment, the side wall portion 11 of the housing 10 is a metal plate, the outer side wall portion 11a has a slit 16 and a protrusion 14 that protrudes outside the housing 10 by bending the metal plate adjacent to the slit 16, and the outer ventilation opening 13a is a gap formed between the lower end 14a of the protrusion 14 and the slit 16.

[0040] According to this configuration, outer ventilation opening 13a is a gap formed between lower end 14a of protrusion 14 and slit 16. Therefore, when outer side wall 11a is viewed from the front, the opening of outer ventilation opening 13a is covered by protrusion 14. Small animals can only enter outer ventilation opening 13a from the side of lower end 14a of protrusion 14, which further prevents small animals from entering the interior of housing 10.

[0041] In this embodiment, the cover 20 is a metal plate, and each of the first through-holes 21 has a circular shape with a diameter of 3 mm or less. Therefore, small animals with a body length exceeding 3 mm cannot enter the interior of the housing 10. This further prevents small animals from entering the interior of the housing 10.

[0042] Furthermore, in this embodiment, lid 20 has handle 23, and lid 20 is provided so that handle 23 protrudes toward the inside of housing 10. That is, handle 23 makes it possible to identify the side of lid 20 that is to be placed on ventilation opening 13. This makes it possible to prevent lid 20 from being placed on ventilation opening 13 in the wrong orientation. Furthermore, because the orientation in which lid 20 is to be placed can be easily identified, when lid 20 needs to be replaced, the replacement work can be carried out quickly.

[0043] Furthermore, in this embodiment, the side wall 11 has a screw hole 17, the lid 20 has a second through hole 22, and the lid 20 is fastened to the screw hole 17 of the side wall 11 by a screw 18 inserted into the second through hole 22 of the lid 20. Therefore, the control box 1 can be manufactured without the lid 20 attached to the side wall 11, and the lid 20 can be attached after the control box 1 is attached to the outdoor unit 100. This allows flexibility in the manufacturing process and product configuration of the control box 1 and the outdoor unit 100. Furthermore, because the lid 20 is fixed with the screw 18, the lid 20 can be easily replaced by removing the screw 18 using a tool such as a wrench or ratchet wrench.

[0044] In this embodiment, the side wall 11 has a fitting hole 19, and the lid 20 has a protrusion 24 that fits into the fitting hole 19. Therefore, the lid 20 is screwed to the side wall 11 with the protrusion 24 fitted into the fitting hole 19. This prevents the lid 20 from shifting from its installed position. When screwing the lid 20 to the side wall 11, the protrusion 24 fits into the fitting hole 19 of the side wall 11, temporarily fastening the lid 20. This makes the screwing process easy. The protrusion 24 also makes it possible to identify the surface and vertical direction of the lid 20 that is to be placed on the side wall 11. This prevents the lid 20 from being placed on the ventilation opening 13 in the wrong orientation. Furthermore, because the orientation of the lid 20 can be easily identified, the replacement of the lid 20 can be quickly performed when it is necessary to replace it.

[0045] Furthermore, the control box 1 of the outdoor unit 100 according to this embodiment is provided with a sealant 15 provided between the side wall 11 and the lid 20. With this configuration, the sealant 15 prevents a gap from forming between the side wall 11 and the lid 20. Therefore, there is no risk of small animals getting in between the side wall 11 and the lid 20. Furthermore, because no gap forms between the side wall 11 and the lid 20, the side wall 11 and the lid 20 do not rub against each other due to vibration. This prevents noise from being generated by rubbing between the side wall 11 and the lid 20. [Explanation of symbols]

[0046] 1 control box, 10 housing, 11 side wall portion, 11a outer side wall portion, 11b inner side wall portion, 12 electrical components, 13 ventilation opening, 13a outer ventilation opening, 13b inner ventilation opening, 13c ventilation path, 14 convex portion, 14a lower end, 15 sealing material, 16 slit, 17 screw hole, 18 screw, 19 fitting hole, 20 cover body, 21 first through hole, 22 second through hole, 23 handle, 24 protrusion, 100 outdoor unit, 101 outdoor unit housing, 102 compressor, 103 transformer.

Claims

1. a housing having a side wall; an electrical component provided inside the housing; a ventilation hole provided in the side wall portion and communicating with the outside of the housing; a cover provided on the ventilation opening and having a plurality of first through holes; Equipped with The portion of the side wall where the ventilation opening is provided has a double-wall structure of an outer side wall and an inner side wall, a space is provided between the outer side wall portion and the inner side wall portion, The ventilation opening is an outer ventilation port penetrating the outer side wall portion; an inner ventilation port penetrating the inner side wall portion and provided at a position where the outer side wall portion does not overlap with the inner side wall portion in the horizontal direction and the vertical direction; and the space between the outer ventilation port and the inner ventilation port is an air passage connecting the outside of the housing and the inside of the housing, The cover is provided over the inner ventilation port, the side wall portion is a metal plate, The outer side wall portion is Slits and a protrusion formed by bending the metal plate adjacent to the slit and protruding outward from the housing; and The control box of the outdoor unit, wherein the outer ventilation opening is a gap formed between the lower end of the convex portion and the slit.

2. a housing having a side wall; an electrical component provided inside the housing; a ventilation hole provided in the side wall portion and communicating with the outside of the housing; a cover provided on the ventilation opening and having a plurality of first through holes; Equipped with The portion of the side wall where the ventilation opening is provided has a double-wall structure of an outer side wall and an inner side wall, a space is provided between the outer side wall portion and the inner side wall portion, The ventilation opening is an outer ventilation port penetrating the outer side wall portion; an inner ventilation port penetrating the inner side wall portion and provided at a position where the outer side wall portion does not overlap with the inner side wall portion in the horizontal direction and the vertical direction; and the space between the outer ventilation port and the inner ventilation port is an air passage connecting the outside of the housing and the inside of the housing, The cover is provided over the inner ventilation port, The lid has a handle formed by bending a part of the lid and protruding from an end portion thereof, The cover body is a control box for an outdoor unit, wherein the handle is provided so as to protrude toward the inside of the housing.

3. the side wall portion is a metal plate, The outer side wall portion is Slit and a protrusion formed by bending the metal plate adjacent to the slit and protruding outward from the housing; and The outer ventilation port is a gap formed between the lower end of the protrusion and the slit. The control box for the outdoor unit according to claim 2.

4. the lid is a metal plate, Each of the plurality of first through holes has a circular shape with a diameter of 3 mm or less. The control box for the outdoor unit according to any one of claims 1 to 3.

5. The side wall portion has a screw hole, the lid has a second through hole, The lid body is screwed into the screw hole of the side wall portion by a screw inserted into the second through hole of the lid body. The control box for the outdoor unit according to any one of claims 1 to 3.

6. The side wall portion has a fitting hole, The cover has a protrusion that fits into the fitting hole. The control box for the outdoor unit according to claim 5.

7. A sealant is provided between the side wall and the lid. The control box for the outdoor unit according to any one of claims 1 to 3.

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