CN217178752U - Outdoor unit of air conditioner - Google Patents

Abstract

The utility model discloses an outdoor unit of air-conditioner, include: the heat exchanger is cylindrical, the upper end and the lower end of the heat exchanger are both open, and an open hole is formed in the circumferential direction; the base is arranged at the lower end of the heat exchanger to plug the lower end of the heat exchanger; the compressor is arranged on the base and is positioned on the inner side of the heat exchanger; the fan is arranged above the compressor; the side plate is arranged at the opening, the side edge of the side plate is connected with the heat exchanger, and the side plate is provided with a mounting opening; the electrical apparatus box, the electrical apparatus box sets up in installing port department, and the electrical apparatus box of part stretches into the inboard of curb plate and is provided with the ventilation hole towards the below, and the ventilation hole is located the below of fan on the upper and lower direction. Through set up the ventilation hole on the electrical apparatus box for gas in the electrical apparatus box enters into the external world after passing the ventilation hole under the negative pressure effect of fan, thereby can bring the heat in the electrical apparatus box to the external world.

Description

Outdoor unit of air conditioner

Technical Field

The utility model belongs to the technical field of the outer machine technique of air-conditioner and specifically relates to an outer machine of air-conditioner is related to.

Background

No matter the air condensing units electrical apparatus box is transversely placed or vertically placed, the electrical apparatus box generally adopts open structure, and PCB board, components and parts inside the electrical apparatus box or a part are exposed in the air completely, or direct and external UNICOM promptly. Because the outdoor unit of the air conditioner is generally placed in an outdoor environment, small animals such as outdoor insects and geckos can penetrate into the electric appliance box, so that abnormal short circuit of the control panel is caused, and the outdoor unit cannot work.

In the related art, since the drum-shaped outdoor unit of the air conditioner is different from the ordinary outdoor unit, the installation modes and the positions of the electric appliance boxes are different, but the electric appliance boxes are usually fixed in a vertical mode, so that the waterproof, insect-proof and heat dissipation of the electric appliance boxes are greatly influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides an outdoor machine of air-conditioner through set up the ventilation hole on the electrical apparatus box for gas in the electrical apparatus box enters into the external world after passing the ventilation hole under the negative pressure effect of fan, thereby can take the heat in the electrical apparatus box to the external world.

According to the utility model discloses outdoor machine of air-conditioner, include: the heat exchanger is cylindrical, the upper end and the lower end of the heat exchanger are both open, and an open hole is formed in the circumferential direction; the base is arranged at the lower end of the heat exchanger to plug the lower end of the heat exchanger; the compressor is arranged on the base and is positioned on the inner side of the heat exchanger; the fan is arranged above the compressor; the side plate is arranged at the opening, the side edge of the side plate is connected with the heat exchanger, and the side plate is provided with a mounting opening; the electrical apparatus box, the electrical apparatus box set up in installing port department, part the electrical apparatus box stretch into extremely the inboard of curb plate just is provided with the ventilation hole towards the below.

According to the utility model discloses outer machine of air-conditioner is through setting up the ventilation hole on the electrical apparatus box for gas in the electrical apparatus box enters into the external world after passing the ventilation hole under the negative pressure effect of fan, thereby can take the heat in the electrical apparatus box to the external world.

According to some embodiments of the invention, the electrical box comprises: box body, lid and circuit board, the circuit board set up in the box body with between the lid, the box body with curb plate fixed connection, the box body is provided with towards the below the ventilation hole, the ventilation hole is located in the top and bottom direction the below of fan.

According to some embodiments of the invention, the cartridge body comprises: main part and arch, the arch set up in the main part just the arch stretches into to in the heat exchanger, bellied bottom is provided with the ventilation hole.

According to some embodiments of the invention, the protrusion comprises: the heat exchanger comprises a first inclined surface and a second inclined surface, one end of the first inclined surface is connected with the bottom of the protrusion, the first inclined surface inclines towards the direction far away from the heat exchanger in the upward direction, one end of the second inclined surface is connected with the first inclined surface, and the other end of the second inclined surface is connected with the main body.

According to the utility model discloses a some embodiments, the top of main part is provided with the roof, the week side of roof encloses and is equipped with the manger plate muscle, is close to heat exchanger one side the manger plate muscle with be provided with the strengthening rib that a plurality of intervals set up between the roof.

According to some embodiments of the present invention, the top plate is provided with a plurality of drainage holes, and the plurality of drainage holes are located in a plurality of the outer sides of the reinforcing ribs.

According to some embodiments of the utility model, the main part is provided with a plurality of breakwaters towards one side of curb plate, and is a plurality of the breakwater one-to-one set up in the below of wash port.

According to some embodiments of the utility model, the outdoor unit of air-conditioner still includes: the radiator is connected to the circuit board and extends into the heat exchanger, and the radiator is arranged on the upper portion of the box body.

According to some embodiments of the utility model, be provided with perforation and ventilation recess on the box body, the ventilation recess set up in the fenestrate top, the radiator passes the perforation just stretch into to in the heat exchanger.

According to the utility model discloses a some embodiments, be provided with first joint portion on the curb plate, the bottom of electrical apparatus box is provided with second joint portion, first joint portion is one kind in inserted block and the slot, second joint portion is another kind in inserted block and the slot, the inserted block is pegged graft in the slot.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of an outdoor unit for an air conditioner according to an embodiment of the present invention;

fig. 2 is a front view of an outdoor unit for an air conditioner according to an embodiment of the present invention;

fig. 3 is a sectional view of an outdoor unit for an air conditioner according to an embodiment of the present invention;

fig. 4 is a plan view of an outdoor unit for an air conditioner according to an embodiment of the present invention;

fig. 5 is an exploded view of an outdoor unit for an air conditioner according to an embodiment of the present invention;

fig. 6 is a schematic structural view of an electrical box and a heat exchanger according to an embodiment of the present invention;

fig. 7 is a schematic structural view of a cartridge at an angle according to an embodiment of the present invention;

fig. 8 is a schematic structural view of a cartridge body at another angle according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a box body at a further angle according to an embodiment of the present invention.

Reference numerals:

100. an air conditioner outdoor unit;

10. a heat exchanger;

20. a fan;

30. a side plate; 31. a first clamping part; 32. an installation port;

40. an electrical box; 41. a box body; 42. a box cover; 48. a circuit board; 43. a main body; 431. a top plate; 432. water retaining ribs; 433. reinforcing ribs; 434. a drain hole; 435. a water baffle; 436. perforating; 437. a ventilation groove; 438. a wire harness hole; 44. a protrusion; 441. a first inclined surface; 442. a second inclined surface; 45. a vent hole; 46. a second clamping part; 47. a handle part is buckled;

51. an air outlet grille; 52. a base; 53. a heat sink; 54. a compressor.

Detailed Description

Embodiments of the present invention are described in detail below, and the embodiments described with reference to the drawings are exemplary.

An outdoor unit 100 for an air conditioner according to an embodiment of the present invention will be described with reference to fig. 1 to 9.

The utility model discloses outdoor machine 100 of air-conditioner includes: the heat exchanger 10, the base 52, the compressor 54, the fan 20, the side panels 30, and the appliance box 40. The heat exchanger 10 is mounted on the base 20, the heat exchanger 10 is cylindrical as a whole, and both upper and lower ends of the heat exchanger 10 are open, and the heat exchanger 10 has an open opening in a circumferential direction. The compressor 54 is mounted on the base 20 and is located inside the heat exchanger 10. That is, the heat exchanger 10 and the base 20 form a certain inner space, and the compressor 54 is disposed in the inner space.

The fan 20 is disposed above the compressor 54, the fan 20 includes a fan and a motor, the motor provides a driving force for driving the fan to rotate, and specifically, the upper end of the heat exchanger 10 is an air outlet of the outdoor unit 100, so that air can be conveniently discharged from the outdoor unit 100, the installation of the outdoor unit 100 is less limited by the location, and the outdoor unit 100 is conveniently disposed.

In addition, the base 52 is disposed at the lower end of the heat exchanger 10, so that the base 52 closes the bottom of the heat exchanger 10, and thus when the blower 20 is operated, a negative pressure may be generated inside the heat exchanger 10, so that an air flow may enter the inside of the heat exchanger 10 through a gap on the heat exchanger 10, and then be discharged to the outside of the outdoor unit 100 from the air outlet by the fan, thereby achieving heat exchange between the heat exchanger 10 and the air flow. And, the compressor 54 is arranged at the inner side of the heat exchanger 10 and below the fan 20, and a connection pipeline for refrigerant to flow is provided between the compressor 54 and the heat exchanger 10, so that a shorter connection pipeline can be adopted, and the space of the outdoor unit 100 of the air conditioner can be reasonably utilized, so that the outdoor unit 100 of the air conditioner has a more compact structure and a smaller volume.

In addition, the side plate 30 is fixed on the side of the heat exchanger 10 having the open opening, and the side edge of the side plate 30 is fixedly connected with the heat exchanger 10, so that the open opening of the heat exchanger 10 can be closed on one hand, and the fixing of the side plate 30 is facilitated on the other hand.

And, the side plate 30 is provided with a mounting opening 32, and the electrical box 40 is arranged at the mounting opening 32, so that the electrical box 40 can be fixed.

In addition, the outdoor unit 100 of the air conditioner can be conveniently carried by providing the handle 47 at the outside of the electrical box 40.

Further, as shown in fig. 5, a part of the electrical box 40 protrudes to the inside of the heat exchanger 10, and the electrical box 40 is provided with a ventilation hole 45 facing downward. So set up, set up ventilation hole 45 in the bottom of electrical apparatus box 40 for fan 20 can be at the inside negative pressure that produces of heat exchanger 10 at the during operation, thereby can extract gas in the electrical apparatus box 40, can extract the external world with the high-temperature gas in the electrical apparatus box 40 like this, thereby make the heat dissipation to electrical apparatus box 40.

Therefore, the ventilation holes 45 are formed in the electrical box 40, so that air in the electrical box 40 enters the outside after passing through the ventilation holes 45 under the negative pressure action of the fan 20, and heat in the electrical box 40 can be brought to the outside.

As shown in fig. 4, the electrical box 40 includes: the fan comprises a box body 41, a box cover 42 and a circuit board 48, wherein the circuit board 48 is arranged between the box body 41 and the box cover 42, the box body 41 is fixedly connected with the side plate 30, the box body 41 is provided with a vent hole 45 facing downwards, and the vent hole 45 is positioned below the fan 20 in the up-down direction. That is, the electrical box 40 is fixedly connected to the side plate 30 through the box body 41, and the box body 41 is provided with the vent 45, that is, the box body 41 is provided with the vent 45 facing downward, so that air in the electrical box 40 is sucked into the space inside the heat exchanger 10 through the vent 45 under the negative pressure when the fan 20 operates, and thus the air volume of the heat exchanger 10 can be increased, and the heat of the electrical box 40 can be dissipated. The ventilation holes 45 are located below the fan 20 in the vertical direction, so that air in the electrical box 40 can be sucked into the inner space of the heat exchanger 10 quickly, and the heat dissipation efficiency is improved.

And, because the vent holes 45 are arranged on the box body 41, the box body 41 can be installed and fixed, and meanwhile, the gas exchange between the heat exchanger 10 and the electrical box 40 can be realized.

Moreover, the vent holes 45 are arranged downward, so that water can be prevented from entering the electrical box 40, and further, the normal operation of the electrical box 40 can be prevented from being influenced. Naturally, the ventilation holes 45 provided downward may also be protected against insects. Specifically, the circuit board 48 is provided with a plurality of electrical components, and heat generated by the electrical components during operation is extracted into the heat exchanger 10 by the negative pressure of the fan 20.

Further, the shape of the vent hole 45 is circular, and the circular vent hole 45 has good air flow passing performance, so that the air exchange rate between the electrical box 40 and the heat exchanger 10 can be improved. And, the aperture of ventilation hole 45 is 3mm, makes the size of ventilation hole 45 suitable like this, can avoid on the one hand water or mosquito to get into in the electrical apparatus box 40, and on the other hand can promote the speed that the gas passes through.

Further, as shown in fig. 7 and 8, the case 41 includes: the heat exchanger comprises a main body 43 and a protrusion 44, wherein the protrusion 44 is arranged on the main body 43, the protrusion 44 extends into the heat exchanger 10, and the bottom of the protrusion 44 is provided with a vent hole 45. That is to say, divide into arch 44 and main part 43 with box body 41 to in arch 44 stretches into heat exchanger 10 relatively main part 43, on the one hand can be with the bottom of the arch 44 that ventilation hole 45 arranged, thereby realize the purpose that ventilation hole 45 set up downwards, on the other hand, stretch into in heat exchanger 10 with arch 44, can make things convenient for the gas exchange between heat exchanger 10 and the electrical apparatus box 40, promptly, can promote the radiating efficiency of electrical apparatus box 40 like this.

Further, as shown in fig. 7, the projection 44 includes: a first inclined surface 441 and a second inclined surface 442, one end of the first inclined surface 441 is connected to the bottom of the protrusion 44 and is inclined in an upward direction toward a direction away from the heat exchanger 10, one end of the second inclined surface 442 is connected to the first inclined surface 441, and the other end of the second inclined surface 442 is connected to the body 43. That is, the first inclined surface 441 and the second inclined surface 442 are disposed between the bottom of the protrusion 44 and the main body 43, and both the first inclined surface 441 and the second inclined surface 442 can perform a flow guiding function, that is, water dropping on the protrusion 44 can be quickly drained by the first inclined surface 441 and the second inclined surface 442, thereby preventing the water from entering the electrical box 40. Moreover, the first and second inclined surfaces 441, 442 may also function to direct the airflow such that it better passes through the protrusion 44.

Further, the inclination angles of the first inclined surface 441 and the second inclined surface 442 are different, and particularly, the inclination angle of the first inclined surface 441 is greater than that of the second inclined surface 442, so that the protrusion 44 inclined in a stepped manner can well guide the airflow when the airflow flows through the protrusion 44, thereby improving the heat dissipation efficiency of the electrical box 40.

As shown in fig. 6 to 8, a top plate 431 is provided on the top of the body 43, and a water blocking rib 432 is provided around the top plate 431. By providing the top plate 431 on the top of the main body 43 and providing the water blocking rib 432 on the peripheral side of the top plate 431, the waterproof performance of the electric box 40 can be improved.

Specifically, as shown in fig. 2 to 4, the outdoor unit 100 of the air conditioner further includes: the air outlet grille 51 and the air outlet grille 51 can be sleeved on the top of the electrical box 40, namely, sleeved on the top plate 431, and the water blocking rib 432 is arranged, so that the waterproof performance between the air outlet grille 51 and the electrical box 40 can be improved, and the use safety of the electrical box 40 can be improved.

Further, a plurality of ribs 433 are provided between the water blocking rib 432 and the top plate 431 on the side close to the heat exchanger 10. Specifically, the water blocking rib 432 near the side of the heat exchanger 10 is abutted against the side plate 30, so that the height of the water blocking rib 432 is higher than the water blocking ribs 432 at other positions, and thus the connection stability between the electrical box 40 and the side plate 30 can be improved. Therefore, in order to improve the structural strength of the water blocking rib 432 here, the rib 433 is reinforced between the water blocking rib 432 and the top plate 431, so that the structural strength of the top plate 431 is higher, and thus the service life of the electrical box 40 can be improved.

As shown in fig. 8, the top plate 431 is provided with a plurality of water discharge holes 434, and the plurality of water discharge holes 434 are located outside the plurality of ribs 433. That is, the outer side of the reinforcing rib 433 is further provided with the water discharge hole 434, so that even though water enters the top plate 431 through the air outlet grille 51 and the water blocking rib 432, the water can be discharged to the outer side of the electrical box 40 through the water discharge hole 434, thereby improving the safety of the electrical box 40. After the water is discharged from the water discharge hole 434, the water drops on the first inclined surface 441 and the second inclined surface 442, is guided by the first inclined surface 441 and the second inclined surface 442, and finally flows into the base 52. A drain hole 434 is uniformly formed in the base 52 to finally discharge water to the outside of the outdoor unit 100.

As shown in fig. 7 and 9, a plurality of water baffles 435 are disposed on a side of the main body 43 facing the side plate 30, and the plurality of water baffles 435 are disposed below the water discharge holes 434 in a one-to-one correspondence. The water guard 435 disposed below the water drain hole 434 may be used to prevent rainwater from entering the top plate 431 through the water drain hole 434 and then flowing into the electrical box 40 through the water guard rib 432 when the fan 20 is operated at a high speed, that is, it may improve the safety of the electrical box 40.

Specifically, the shape of the water baffle 435 is triangular, on one hand, the triangular structure is relatively stable, when the water baffle 435 is fixed on the main body 43, the structural strength of the main body 43 can be improved, and on the other hand, the triangular structure does not influence the normal passing of the air flow, that is, the air output of the fan 20 can be improved.

As shown in fig. 8, the top plate 431 is further provided with a wire harness hole 438, and the wire harness hole 438 and the water discharge hole 434 are spaced apart from each other, and the wire harness hole 438 functions as a wire harness.

In addition, as shown in fig. 3, 5 and 6, the outdoor unit 100 of the air conditioner further includes: a heat sink 53, wherein the heat sink 53 is connected to the circuit board 48, the heat sink 53 extends into the heat exchanger 10, and the heat sink 53 is disposed on the upper portion of the case 41. Among them, the heat sink 53 may include: a heat dissipating substrate in contact with a portion of the circuit board 48, and heat dissipating fins. Specifically, the heat dissipation substrate is attached to a control module on the circuit board 48, and the control module is a main heat source of the circuit board 48. The heat dissipation substrate is attached to the control module on the circuit board 48, the heat of the circuit board 48 can enter the heat dissipation fins through the heat dissipation substrate, and the wind generated by the fan 20 can pass through the heat dissipation fins through the diversion of the first inclined surface 441 and the second inclined surface 442, so that the heat on the heat dissipation fins can be brought to the air outlet grille 51 and then blown to the outside, and thus the heat on the heat sink 53 can be brought to the outside.

Further, the heat sink 53 is fixed to the case 41 by screws.

Further, the case body 41 is provided with a penetration hole 436 and a ventilation groove 437, the ventilation groove 437 is provided above the penetration hole 436, the heat sink 53 passes through the penetration hole 436, and the heat sink 53 is protruded into the heat exchanger 10. That is, a penetration hole 436 and a ventilation groove 437 are provided on the main body 43, wherein the penetration hole 436 is used to mount the heat sink 53, that is, the heat sink 53 can be mounted on the electric controller through the penetration hole 436. And, a ventilation groove 437 is disposed above the through hole 436, and the ventilation groove 437 can function as a bypass, so that the air flow can rapidly pass through the heat exchanger 10, thereby improving the heat exchange efficiency of the heat exchanger 10.

In addition, the ventilation groove 437 enables the bottom surface of the electrical box 40 to be flush with the root of the heat sink 53, so that the contact surface of the heat sink 53 with air is increased, and the heat dissipation effect is improved. Moreover, since the inside of the electrical box 40 is communicated with the outside, when the heat sink 53 is disposed on the electrical box 40, the heat sink base plate can close the through hole 436, which can improve the sealing performance of the electrical box 40.

Therefore, the electrical box 40 has two heat dissipation paths, on one hand, the electrical box 40 is provided with the vent holes 45, the fan 20 can generate negative pressure when in operation, and then the fan 20 extracts gas in the electrical box 40 through the negative pressure, so that high-temperature gas in the electrical box 40 can be extracted, and heat dissipation of the electrical box 40 is further realized; on the other hand, the circuit board 48 is further provided with a heat radiator 53, the heat radiator 53 is arranged in the heat exchanger 10, and when the fan 20 operates, the airflow continuously flows through the heat radiator 53, so that heat generated by the heat radiator 53 can be taken away, and heat dissipation of the electrical box 40 is realized.

As shown in fig. 5 and 7, the side plate 30 is provided with a first clamping portion 31, the bottom of the electrical box 40 is provided with a second clamping portion 46, the first clamping portion 31 is one of an insertion block and a slot, the second clamping portion 46 is the other of the insertion block and the slot, and the insertion block is inserted into the slot. That is to say, electrical apparatus box 40 can be fixed on curb plate 30 through the mode of joint, specifically, electrical apparatus box 40's bottom is provided with second joint portion 46, and curb plate 30 corresponds position department and is provided with second joint portion 46, and first joint portion 31 and the mutual joint cooperation of second joint portion 46 can fix electrical apparatus box 40 on curb plate 30 like this.

Further, the bottom of the box body 41 is provided with an insertion block, the corresponding position of the side plate 30 is provided with a slot, and the box body 41 and the side plate 30 are in clamping fit through the insertion block and the slot.

Of course, referring to fig. 5, the electrical box 40 and the side plate 30 are fixedly connected by screws. Specifically, the electrical box 40 is provided with a through hole 436, the side plate 30 is provided with a screw hole, and a screw passes through the through hole 436 and is in threaded fit with the screw hole, so that the electrical box 40 and the side plate 30 can be fixed together.

So, not only can fix through the joint between electrical apparatus box 40 and the curb plate 30, can also fix through the screw, make electrical apparatus box 40's fixed strength higher like this, avoid the outdoor machine 100 of air-conditioner to take place tremble in electrical apparatus box 40 when the operation.

Further, referring to fig. 5, the box cover 42 is fixed to the side plate 30 by screws, and the side plate 30 is fixed to the heat exchanger 10 by screws.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. An outdoor unit for an air conditioner, comprising:

the heat exchanger is cylindrical, the upper end and the lower end of the heat exchanger are both open, and an open hole is formed in the circumferential direction;

the base is arranged at the lower end of the heat exchanger to plug the lower end of the heat exchanger;

the compressor is arranged on the base and is positioned on the inner side of the heat exchanger;

the fan is arranged above the compressor;

the side plate is arranged at the opening, the side edge of the side plate is connected with the heat exchanger, and the side plate is provided with a mounting opening;

the electrical apparatus box, the electrical apparatus box set up in installing port department, part the electrical apparatus box stretch into extremely the inboard of curb plate just is provided with the ventilation hole towards the below.

2. The outdoor unit of claim 1, wherein the electric box comprises: box body, lid and circuit board, the circuit board set up in the box body with between the lid, the box body with curb plate fixed connection, the box body is provided with towards the below the ventilation hole, the ventilation hole is located in the top and bottom direction the below of fan.

3. The outdoor unit of claim 2, wherein the casing comprises: main part and arch, the arch set up in the main part just the arch stretches into to in the heat exchanger, bellied bottom is provided with the ventilation hole.

4. The outdoor unit of claim 3, wherein the projection comprises: the heat exchanger comprises a first inclined surface and a second inclined surface, one end of the first inclined surface is connected with the bottom of the protrusion, the first inclined surface inclines towards the direction far away from the heat exchanger in the upward direction, one end of the second inclined surface is connected with the first inclined surface, and the other end of the second inclined surface is connected with the main body.

5. The outdoor unit of claim 3, wherein a top plate is disposed on a top portion of the main body, a water blocking rib is disposed around a periphery of the top plate, and a plurality of reinforcing ribs are disposed between the water blocking rib and the top plate on a side close to the heat exchanger.

6. The outdoor unit of claim 5, wherein a plurality of drainage holes are formed in the top plate, and the plurality of drainage holes are formed at an outer side of the plurality of ribs.

7. The outdoor unit of claim 6, wherein a plurality of water guards are provided on a side of the main body facing the side plate, and the plurality of water guards are provided under the drain hole in one-to-one correspondence.

8. The outdoor unit of claim 2, further comprising: the radiator is connected to the circuit board and extends into the heat exchanger, and the radiator is arranged on the upper portion of the box body.

9. The outdoor unit of claim 8, wherein the casing has a hole and a ventilation groove formed thereon, the ventilation groove being formed above the hole, and the heat sink passes through the hole and extends into the heat exchanger.

10. The outdoor unit of claim 1, wherein a first engaging portion is formed on the side plate, and a second engaging portion is formed on the bottom of the electric box, the first engaging portion being one of an insert block and a slot, the second engaging portion being the other of the insert block and the slot, and the insert block being inserted into the slot.

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