CN111396997A

CN111396997A - Outdoor machine of air conditioner

Info

Publication number: CN111396997A
Application number: CN202010334003.4A
Authority: CN
Inventors: 周学明
Original assignee: Hisense Guangdong Air Conditioning Co Ltd
Current assignee: Hisense Guangdong Air Conditioning Co Ltd
Priority date: 2020-04-24
Filing date: 2020-04-24
Publication date: 2020-07-10

Abstract

The invention discloses an air conditioner outdoor unit, which comprises: a housing; the control panel is arranged in the shell; the air duct cover plate is arranged in the shell and defines a heat dissipation air duct in the shell; the heat pipe is provided with an evaporation part and a condensation part, the evaporation part is in contact with the control board for heat conduction, and the condensation part is arranged in the heat dissipation air duct; and the air guide device is arranged in the heat dissipation air duct. The air conditioner outdoor unit provided by the embodiment of the invention has the advantages of good heat dissipation effect, low cost and the like.

Description

Outdoor machine of air conditioner

Technical Field

The invention relates to the technical field of air conditioners, in particular to an air conditioner outdoor unit.

Background

In the related art, the heating module of the control panel of the outdoor unit of the air conditioner generates a large amount of heat, and the control panel is usually cooled by natural cooling and refrigerant cooling. The natural heat dissipation effect is limited, the refrigerant heat dissipation structure is complex, the control logic is complex and the refrigerant heat dissipation structure has the ability to lose, and the overall cost is high.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide an outdoor unit of an air conditioner, which has the advantages of good heat dissipation effect, low cost, etc.

In order to achieve the above object, an outdoor unit of an air conditioner according to an embodiment of the present invention includes: a housing; the control panel is arranged in the shell; the air duct cover plate is arranged in the shell and defines a heat dissipation air duct in the shell; the heat pipe is provided with an evaporation part and a condensation part, the evaporation part is in contact with the control board for heat conduction, and the condensation part is arranged in the heat dissipation air duct; and the air guide device is arranged in the heat dissipation air duct.

The air conditioner outdoor unit provided by the embodiment of the invention has the advantages of good heat dissipation effect, low cost and the like.

According to some embodiments of the present invention, the air duct cover plate is provided with an air inlet and an air outlet, and the air guiding device is installed on the air duct cover plate and located at the air inlet.

According to some embodiments of the present invention, the air guiding device includes: the motor is arranged on the air duct cover plate through a bracket; the impeller is installed on the motor and located in the air duct cover plate, and the impeller is driven by the motor to rotate.

According to some embodiments of the present invention, the inner surface of the air duct cover plate is provided with a drainage ring disposed around the air inlet, the drainage ring surrounds a drainage cavity, and a cross-sectional area of the drainage cavity gradually increases toward an inside of the heat dissipation air duct.

According to some embodiments of the present invention, the outdoor unit of an air conditioner further includes: and the fins are arranged on the condensation part of the heat pipe and are positioned in the heat dissipation air duct.

According to some embodiments of the invention, the fin is provided with at least one heat dissipation window.

According to some embodiments of the present invention, the heat pipe includes a first heat pipe having a first evaporation portion and a first condensation portion, the first evaporation portion is U-shaped and is in contact with the control board for heat conduction, the first condensation portion is disposed in the heat dissipation duct, and a second heat pipe having a second evaporation portion and a second condensation portion, the second evaporation portion is L-shaped and is in contact with the control board for heat conduction, and the second condensation portion is disposed in the heat dissipation duct.

According to some embodiments of the present invention, the outdoor unit of an air conditioner further includes: a heat conducting mounting plate mounted to the control panel and configured with a pipe groove, the evaporation portion fitted in the pipe groove and the heat conducting mounting plate compressing the evaporation portion to the control panel.

According to some embodiments of the present invention, an electronic component is disposed on a surface of the control board facing away from the heat dissipation air duct, and the heat conduction mounting plate is mounted on the surface of the control board on which the electronic component is disposed, and presses the evaporation portion against the electronic component.

According to some embodiments of the present invention, the outdoor unit of an air conditioner further includes: the electronic control box is arranged in the shell, the control panel is arranged in the electronic control box, and the air duct cover plate is arranged in the electronic control box and is limited by the control panel together with the heat dissipation air duct.

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 of an air conditioner according to an embodiment of the present invention.

Fig. 2 is a schematic connection diagram of a duct cover plate, an electric control box and a control panel of an outdoor unit of an air conditioner according to an embodiment of the present invention.

Fig. 3 is an exploded view of a duct cover plate, an electric control box, and a control panel of an outdoor unit of an air conditioner according to an embodiment of the present invention.

Fig. 4 is a schematic view illustrating connection of fins, heat pipes and a heat conductive mounting plate of an outdoor unit of an air conditioner according to an embodiment of the present invention.

Fig. 5 is an exploded view of a fin, a heat pipe and a heat conductive mounting plate of an outdoor unit of an air conditioner according to an embodiment of the present invention.

Fig. 6 is a schematic view illustrating connection between a control panel and a heat conductive mounting plate of an outdoor unit of an air conditioner according to an embodiment of the present invention.

Fig. 7 is an exploded view of a control panel and a heat conductive mounting plate of an outdoor unit of an air conditioner according to an embodiment of the present invention.

Fig. 8 is a schematic structural view illustrating a duct cover plate of an outdoor unit of an air conditioner according to an embodiment of the present invention.

Reference numerals:

an outdoor unit of an air conditioner 1,

A casing 100, a first chamber 101, a second chamber 102, a heat exchanger 103, a compressor 104,

A control board 200, an electronic component 210,

The air duct cover plate 300, the heat dissipation air duct 310, the air inlet 320, the air outlet 330, the flow guiding ring 340, the first arc-shaped portion 341, the second arc-shaped portion 342, the upper straight portion 343, the lower straight portion 344, the flow guiding cavity 350,

A heat pipe 400, a first heat pipe 410, a first evaporation part 411, a first condensation part 412, a second heat pipe 420, a second evaporation part 421, a second condensation part 422, a plane 430,

Air guide device 500, motor 510, impeller 520, bracket 530, center portion 531, mounting arm 532, and a fan,

Fin 600, heat dissipation window 610, flanging hole 620,

A heat-conducting mounting plate 700, a pipe groove 710,

An electric control box 800,

A fan 900.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "central," "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 are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

In the description of the present invention, "a plurality" means two or more, and "several" means one or more.

An outdoor unit 1 of an air conditioner according to an embodiment of the present invention is described below with reference to the accompanying drawings.

As shown in fig. 1 to 3, 5 and 8, an outdoor unit 1 of an air conditioner according to an embodiment of the present invention includes a casing 100, a control panel 200, a duct cover 300, a heat pipe 400 and an air guide 500.

Control panel 200 locates in casing 100, and wind channel apron 300 locates casing 100 and inject heat dissipation wind channel 310 in casing 100, and heat pipe 400 has evaporation portion and condensation portion, the evaporation portion contacts heat conduction with control panel 200, the condensation portion is located in heat dissipation wind channel 310, and air ducting 500 installs in heat dissipation wind channel 310.

The heat radiating process of the control panel 200 of the outdoor unit 1 of the air conditioner according to the embodiment of the present invention will be described.

The heat generated by the control board 200 is conducted to the heat pipe 400, the medium in the heat pipe 400 absorbs the heat and then vaporizes to form the evaporation part, the vapor flows to the rest part of the heat pipe 400 under a small pressure difference, cold air with a lower temperature is introduced through the heat dissipation air duct 310 under the action of negative pressure generated by the air guide device 500, the vapor and the cold air exchange and release heat to liquefy, the heat is condensed into liquid again to form the condensation part, and the liquefied liquid flows back to the evaporation part through a porous material (a liquid absorption core) by virtue of capillary force. The heat is transferred from the evaporation part to the condensation part of the heat pipe 400 by such reciprocating circulation, and the heat of the control board 200 is continuously transferred, thereby achieving the purpose of cooling the control board 200.

The external air inlet of the casing 100 may be through an original external air inlet, or an independent external air inlet may be additionally provided, so as to introduce external air into the casing 100, thereby increasing the heat dissipation effect.

According to the air conditioner outdoor unit 1 of the embodiment of the present invention, by providing the heat pipe 400 and the air duct cover plate 300, the control panel 200 is continuously cooled by the cold air outside the heat pipe 400 and the cooling air duct 310, so that the heat dissipation effect is good, the temperature of the control panel 200 can be reliably controlled, and compared with a cooling medium cooling method in the related art, the structure and the control logic are simple, and the cost can be effectively reduced. In addition, the heat pipe 400 is a closed loop circulation system, which is not controlled by the air conditioning and refrigeration system, and forms an independent closed loop circulation system.

Moreover, the air guiding device 500 can increase the efficiency of actively introducing cold air into the heat dissipation air duct 310, increase the flow speed and air volume of the air flow on the surface of the heat pipe 400, increase the heat exchange efficiency of the heat pipe 400, and further increase the heat dissipation efficiency.

Therefore, the air conditioner outdoor unit provided by the embodiment of the invention has the advantages of good heat dissipation effect, low cost and the like.

According to some embodiments of the present invention, as shown in fig. 3 and 8, the duct cover 300 has an air inlet 320 and an air outlet 330, and the air guiding device 500 is installed on the duct cover 300 and located at the air inlet 320. By the arrangement of the air inlet 320 and the air outlet 330, the flow rate of air in the heat dissipation air duct 310 is further increased, and the heat exchange efficiency of the heat pipe 400 is increased. Further, since the air guide device 500 is attached to the air duct cover 300, the air duct cover 300 has a certain structural strength by itself, and thus, the attachment stability of the air guide device 500 can be increased. Moreover, the air guiding device 500 is located at the air inlet 320, so that the air guiding device 500 is conveniently contacted with the air outside the heat dissipation air duct 310, the working efficiency of the air guiding device 500 is increased, and the heat dissipation efficiency is further improved.

According to some embodiments of the present invention, as shown in fig. 1, 3 and 8, the air inlet 320 and the air outlet 330 are disposed opposite to each other and are located in the housing 100.

For example, the air inlet 320 may be circular, and the air outlet 330 may be an open opening of the air duct cover plate 300, so as to ensure the stability of the installation of the air guiding device 500, and save the production cost of the air duct cover plate 300. The air inlet 320 and the air outlet 330 are arranged oppositely, so that the resistance of air inlet circulation in the heat dissipation air duct 310 is reduced, the efficiency of air circulation in the heat dissipation air duct 310 is increased, and the heat dissipation efficiency is further improved. In addition, the air inlet 320 and the air outlet 330 are both located in the casing 100, so that the probability of dust and impurities entering the heat dissipation air duct 310 can be reduced, thereby playing a role of dust prevention and prolonging the service life of the electrical components of the outdoor unit 1 of the air conditioner.

According to some embodiments of the present invention, as shown in fig. 2-3, the wind guiding device 500 includes a motor 510 and an impeller 520. The motor 510 is mounted to the air duct cover 300 through the bracket 530, the impeller 520 is mounted to the motor 510 and located in the air duct cover 300, and the impeller 520 is driven by the motor 510 to rotate.

The motor 510 and the impeller 520 can be integrated, so that the installation steps are reduced, and the production efficiency is improved. The impeller 520 is disposed in the duct cover 300, so that the impeller 520 is prevented from colliding with other components of the outdoor unit 1 when the duct cover 300 is installed, and space is saved.

According to some embodiments of the present invention, as shown in FIG. 2, the bracket 530 includes a central portion 531 and a plurality of mounting arms 532. The motor 510 is mounted to the center portion 531, one end of each mounting arm 532 is connected to the center portion 531 and the other end is connected to the air duct cover 300, and the plurality of mounting arms 532 are spaced apart from each other in the circumferential direction of the center portion 531. The bracket 530 may be welded or integrally formed with the air duct cover plate 300. This increases the stability of connection between the bracket 530 and the air duct cover 300, further improves the stability of installation of the air guide device 500, ensures the reliability of the outdoor unit 1, and has a small wind resistance.

According to some embodiments of the present invention, as shown in fig. 8, the inner surface of the air duct cover 300 is provided with a drainage ring 340 disposed around the air inlet 320, the drainage ring 340 surrounds a drainage cavity 350, and the cross-sectional area of the drainage cavity 350 gradually increases toward the inside of the heat dissipation air duct 310. Wherein, the flow guiding ring 340 extends from the air inlet 320 to the air outlet 330. Therefore, air can be smoothly fed, and the air inlet amount is increased.

According to some embodiments of the present invention, as shown in fig. 8, the flow guiding ring 340 includes a first arc portion 341, a second arc portion 342, an upper straight portion 343, and a lower straight portion 344.

The first arc portion 341 and the second arc portion 342 are spaced apart in the horizontal direction, both ends of the upper straight portion 343 are connected to the upper end of the first arc portion 341 and the upper end of the second arc portion 342, respectively, and both ends of the lower straight portion 344 are connected to the lower end of the second arc portion 342 and the lower end of the second arc portion 342, respectively.

Thus, the space required for installing the drainage ring 340 can be reduced, and the increase of the volume of the air duct cover plate 300 is avoided, thereby improving the space utilization rate of the outdoor unit 1 of the air conditioner. Also, the upper flat portion 343 and the lower flat portion 344 can be adapted to the height of the duct cover 300, reducing the size of the duct cover 300 in the height direction. Through the arrangement of the first arc-shaped part 341 and the second arc-shaped part 342, the air can be further smoothly supplied, and the air supply amount is increased.

According to some embodiments of the present invention, as shown in fig. 3 to 7, the outdoor unit 1 further includes at least one fin 600, and the fin 600 is disposed at the condensing portion of the heat pipe 400 and located in the heat dissipation air duct 310, so that the fin 600 can be used to improve the heat dissipation effect of the condensing portion.

Further, the plurality of fins 600 are provided, each fin 600 is provided with the flanging hole 620, the heat pipe 400 is arranged in the flanging holes 620 of the plurality of fins 600 in a penetrating manner, the plurality of fins 600 and the condensation portion are fixed, and the heat dissipation effect is further improved through the plurality of fins 600. The plurality of fins 600 are arranged at intervals along the length direction of the heat pipe 400, and the distance between the adjacent fins 600 is limited by the flanging of the flanging hole 620, so that the stability of the relative positions of the plurality of fins 600 is ensured.

In order to facilitate heat dissipation and improve heat dissipation efficiency, the distance between adjacent fins 600 is 1mm to 4 mm.

According to some embodiments of the present invention, as shown in fig. 4 and 5, the fin 600 is provided with at least one heat dissipation window 610. Therefore, the flowing speed of the airflow on the surface of the fin 600 can be increased, and the heat exchange area between the fin 600 and the airflow can be increased, so that the heat dissipation efficiency is further improved.

For example, the fin 600 is provided with a plurality of heat dissipation windows 610, each heat dissipation window 610 extends along the length direction of the fin 600, the plurality of heat dissipation windows 610 are arranged in a plurality of groups on the fin 600, the plurality of groups of heat dissipation windows 610 are respectively distributed in an array manner along the length direction and the width direction of the fin 600, the flow velocity of the airflow on the surface of the fin 600 and the heat exchange area between the fin 600 and the airflow are improved, and the heat dissipation effect is further improved.

According to some embodiments of the present invention, as shown in fig. 4 and 5, the heat pipe 400 includes a first heat pipe 410 and a second heat pipe 420, the first heat pipe 410 has a first evaporation portion 411 and a first condensation portion 412, the first evaporation portion 411 is configured in a U shape and is in contact with the control board 200 for heat conduction, the first condensation portion 412 is disposed in the heat-dissipating air duct 310, the second heat pipe 420 has a second evaporation portion 421 and a second condensation portion 422, the second evaporation portion 421 is configured in a L shape and is in contact with the control board 200 for heat conduction, and the second condensation portion 422 is disposed in the heat-dissipating air duct 310.

Wherein, the outer diameter of the first heat pipe 410 may be 8mm, and the outer diameter of the second heat pipe 420 may be 6 mm.

By configuring the first evaporation part 411 of the first heat pipe 410 in a U-shape, heat is conducted in contact with the control board 200 using the U-shaped first evaporation part 411, whereby a heat conduction area can be increased, and heat dissipation efficiency to the control board 200 is improved. The second heat pipe 420 is arranged to dissipate heat of the control board 200, so as to further improve the heat dissipation effect.

Also, the first evaporation portion 411 of the first heat pipe 410 is formed in a U shape, has a large heat transfer area with the control board 200, and can be disposed at a position on the control board 200 where a space is relatively large, and the second evaporation portion 421 of the second heat pipe 420 is formed in a L shape, and can be disposed at a position on the control board 200 where a space is relatively small, thereby performing overall heat dissipation on the control board 200.

Specifically, the first evaporation portion 411 is located at the middle portion of the first heat pipe 410 in the longitudinal direction, and the first condensation portion 412 is located at both end portions of the first heat pipe 410 in the longitudinal direction. The second evaporation portion 421 is located at one end portion of the second heat pipe 420 in the longitudinal direction, and the second condensation portion 422 is located at the other end portion of the second heat pipe 420 in the longitudinal direction. Accordingly, the first heat pipe 410 and the second heat pipe 420 radiate heat efficiently by making full use of their high conductivity and structure at different positions of the control board 200.

According to some embodiments of the present invention, as shown in fig. 4 to 7, the outdoor unit 1 further includes a heat-conductive mounting plate 700, the heat-conductive mounting plate 700 is mounted to the control panel 200 and is configured with a duct 710, the duct 710 includes a U-shaped duct and an L-shaped duct, the evaporation part is fitted into the duct 710, and the heat-conductive mounting plate 700 presses the evaporation part against the control panel 200.

The first evaporation part 411 is fitted in the U-shaped tube groove, the second evaporation part 421 is fitted in the L-shaped tube groove, and the heat conduction mounting plate 700 presses the first evaporation part 411 and the second evaporation part 421 against the control plate 200. the heat conduction mounting plate 700 may be an aluminum alloy plate, and the U-shaped tube groove and the L-shaped tube groove may be formed by an extrusion process.

Through setting up heat conduction mounting panel 700, not only can fix first evaporation portion 411 and second evaporation portion 421, make first evaporation portion 411 and second evaporation portion 421 reliably laminate with control panel 200, heat conduction mounting panel 700 has the heat conductivity moreover, can make full use of the surface area of first evaporation portion 411 and second evaporation portion 421 like this, the heat with control panel 200 fully conducts to first evaporation portion 411 and second evaporation portion 421 circumference everywhere, and then improves heat-conducting efficiency.

According to some embodiments of the present invention, as shown in fig. 7, an electronic component 210 is disposed on a surface of the control board 200, which is opposite to the heat dissipation air duct 310, where the electronic component 210 includes, but is not limited to, an IPM (intelligent power module), an IGBT (insulated gate bipolar transistor), a diode, a silicon bridge, and the like, a heat conduction mounting plate 700 is mounted on the surface of the control board 200, where the electronic component 210 is disposed, the heat conduction mounting plate 700 tightly presses the first evaporation portion 411 and the second evaporation portion 421 against the electronic component 210, heat conduction silicone may be coated between the electronic component 210 and the first evaporation portion 411 and between the electronic component 210 and the second evaporation portion 421, and heat generated by the electronic component 210 can be timely conducted to the first evaporation portion 411 and the second evaporation portion 421.

Moreover, the electronic component 210 is arranged on the surface of the control board 200, which is opposite to the heat dissipation air duct 310, so that dust, impurities and the like in the air flow in the heat dissipation air duct 310 can be prevented from being accumulated on the surface of the control board 200 to contaminate the electronic component 210, thereby playing a dustproof role and prolonging the service life of the electronic component 210.

The surface of the first evaporation part 411 facing the control plate 200 and the surface of the second evaporation part 421 facing the control plate 200 are configured into a plane 430, so that the adhesion degree of the first evaporation part 411 and the second evaporation part 421 with the electronic component 210 is ensured, and the heat exchange area is increased. The surface of the first evaporation part 411 facing away from the control plate 200 and the surface of the second evaporation part 421 facing away from the control plate 200 may be configured as arc-shaped surfaces that are fitted with the pipe grooves 710.

According to some embodiments of the present invention, as shown in fig. 1 to fig. 3, the outdoor unit 1 of the air conditioner further includes an electric control box 800, the electric control box 800 is disposed in the casing 100, the control board 200 is mounted in the electric control box 800 to protect the control board 200 by using the electric control box 800, the air duct cover plate 300 is mounted in the electric control box 800 and defines the heat dissipation air duct 310 together with the control board 200, so that the electric control box 800 provides a mounting carrier for the air duct cover plate 300, and a side surface of the control board 200, on which the electronic component 210 is not disposed, is located in the heat dissipation air duct 310, thereby further improving a heat dissipation effect of the control board.

According to some embodiments of the present invention, as shown in fig. 1, the outdoor unit 1 further includes a fan 900, and the fan 900 is installed in the casing 100 and located outside the heat dissipation air duct 310.

As can be understood by those skilled in the art, the outdoor unit 1 of the air conditioner according to the embodiment of the present invention further includes a heat exchanger 103, a compressor 104, and other components, which are not described herein again.

For example, fig. 1 shows an example of an arrangement of these components, the housing 100 may have a first chamber 101 and a second chamber 102 therein, the heat exchanger 103 spans the first chamber 101 and the second chamber 102, the blower 900 is disposed in the first chamber 101, the compressor 104, the control plate 200, the duct cover 300, the air guide 600, the heat pipe 400, and the fin 600 are disposed in the second chamber 102, and these components of the control plate 200, the duct cover 300, the air guide 600, the heat pipe 400, and the fin 600 may be located above the compressor 104.

The fan 900 is configured to accelerate the flow rate of air in the first chamber 101 of the outdoor unit 1, so as to increase the heat exchange efficiency of the heat exchanger 103. Moreover, the heat dissipation air duct 310 is communicated with the first chamber 101, and the air flow rate in the first chamber 101 is increased, so that the air flow rate of the heat dissipation air duct 310 is increased, and the heat dissipation efficiency of the heat pipe 400 is also increased.

The assembling process of the heat radiating portion of the outdoor unit 1 of the air conditioner according to the embodiment of the present invention will be described below by way of example.

First, the first heat pipe 410 and the second heat pipe 420 are pressed into the U-shaped groove and the L-shaped groove of the heat conductive mounting plate 700, respectively, using an extrusion process, and then a flash process is performed to increase the contact area between the first heat pipe 410 and the second heat pipe 420, and then the fins 600 are moved up and tightened to ensure good contact.

Then, the heat conducting mounting plate 700 is mounted to the control board 200 by screws, and then the assembled whole components are placed inside the electronic control box 800 and fixed by screws after being mounted in place.

Finally, the air duct cover plate 300 is covered and fixed at the corresponding position.

Other configurations of the outdoor unit 1 according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail herein.

For example, an air conditioner including an air conditioner outdoor unit of the present application performs a refrigeration cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the air that has been conditioned and heat-exchanged.

The compressor compresses a refrigerant gas in a high-temperature and high-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.

The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a cooling effect by heat-exchanging with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioner can adjust the temperature of the indoor space throughout the cycle.

The outdoor unit of the air conditioner refers to a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, the indoor unit of the air conditioner includes an indoor heat exchanger, and an expansion valve may be provided in the indoor unit of the air conditioner or the outdoor unit of the air conditioner.

The indoor heat exchanger and the outdoor heat exchanger serve as a condenser or an evaporator. When the indoor heat exchanger is used as a condenser, the air conditioner is used as a heater in a heating mode, and when the indoor heat exchanger is used as an evaporator, the air conditioner is used as a cooler in a cooling mode.

In the description herein, references to the description of "a particular embodiment," "a particular example," etc., 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 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 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

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

a housing;

the control panel is arranged in the shell;

the air duct cover plate is arranged in the shell and defines a heat dissipation air duct in the shell;

the heat pipe is provided with an evaporation part and a condensation part, the evaporation part is in contact with the control board for heat conduction, and the condensation part is arranged in the heat dissipation air duct;

and the air guide device is arranged in the heat dissipation air duct.

2. The outdoor unit of claim 1, wherein the duct cover plate has an air inlet and an air outlet, and the air guide device is installed on the duct cover plate at the air inlet.

3. The outdoor unit of claim 2, wherein the air guide device comprises:

the motor is arranged on the air duct cover plate through a bracket;

the impeller is installed on the motor and located in the air duct cover plate, and the impeller is driven by the motor to rotate.

4. The outdoor unit of claim 2, wherein the inner surface of the duct cover plate is provided with a flow guiding ring around the air inlet, the flow guiding ring surrounds a flow guiding cavity, and the cross-sectional area of the flow guiding cavity gradually increases toward the inside of the heat dissipation duct.

5. The outdoor unit of an air conditioner according to any one of claims 1 to 4, further comprising:

and the fins are arranged on the condensation part of the heat pipe and are positioned in the heat dissipation air duct.

6. The outdoor unit of claim 5, wherein the fin has at least one heat dissipation window formed therein.

7. The outdoor unit of any one of claims 1 to 4, wherein the heat pipe comprises:

the first heat pipe is provided with a first evaporation part and a first condensation part, the first evaporation part is in a U shape and is in contact with the control plate for heat conduction, and the first condensation part is arranged in the heat dissipation air duct;

the second heat pipe is provided with a second evaporation part and a second condensation part, the second evaporation part is L-shaped and is in contact heat conduction with the control board, and the second condensation part is arranged in the heat dissipation air duct.

8. The outdoor unit of an air conditioner according to any one of claims 1 to 4, further comprising:

a heat conducting mounting plate mounted to the control panel and configured with a pipe groove, the evaporation portion fitted in the pipe groove and the heat conducting mounting plate compressing the evaporation portion to the control panel.

9. The outdoor unit of claim 8, wherein the control panel has electronic components on a surface thereof facing away from the heat dissipation duct, and the heat conduction mounting plate is mounted on the surface of the control panel on which the electronic components are provided, and presses the evaporation unit against the electronic components.

10. The outdoor unit of an air conditioner according to any one of claims 1 to 4, further comprising:

the electronic control box is arranged in the shell, the control panel is arranged in the electronic control box, and the air duct cover plate is arranged in the electronic control box and is limited by the control panel together with the heat dissipation air duct.