WO2019037392A1 - Radiator, outdoor unit, and air conditioner - Google Patents

Abstract

A radiator (10), an outdoor unit (1), and an air conditioner. The radiator (10) comprises a radiator substrate (100) and a heat pipe (300) in an annular structure; the heat pipe (300) comprises an evaporation section (301) and a condensation section (302); the evaporation section (301) is disposed on the radiator substrate (100). A refrigerant absorbs heat of the radiator substrate (100) at the evaporation section (301) of the heat pipe (300) where the heat changes from a liquid state to a gas state and enters the condensation section (302), and the refrigerant transfers the heat to the environment at the condensation section (302) where the heat changes from the gas state to the liquid state and flows back to the evaporation section (301); this is circularly repeated. Therefore, heat on the radiator substrate (100) can be effectively radiated into the environment.

Description

Radiator, outdoor unit and air conditioner

Related application

The present application claims priority to Chinese Patent Application Serial No. No. No. No. No. No. No. No. No. No. No. No.

Technical field

The present application relates to the field of air conditioning technology, and more particularly to a radiator, an outdoor unit, and an air conditioner.

Background technique

With the development of air-conditioning technology, air-conditioning continues to break through the cooling and heating technology in the extreme environment. In high-temperature cooling, it is necessary to reduce the temperature of the power unit of the air conditioner outdoor unit so that the air conditioner can operate reliably. To this end, the air conditioner outdoor unit power components have added heat sinks.

Please refer to FIG. 1. FIG. 1 is a schematic structural view of a heat sink provided by the prior art.

The heat sink includes a heat dissipation substrate 100 and heat dissipation fins 200 disposed on the heat dissipation substrate 100. In order to adapt to high-temperature refrigeration, it is necessary to improve the heat dissipation efficiency of the heat sink, and at present, the heat dissipation is enhanced mainly by changing the area and shape of the heat dissipation fins 200. However, the space of the outdoor unit of the air conditioner is limited, and the larger the area of the heat dissipating fin 200 is, the larger the temperature difference between the tip and the root of the root is, and the lower the heat dissipation efficiency is.

Therefore, how to improve the heat dissipation efficiency of the heat sink to lower the temperature of the power component has become a technical problem to be solved by those skilled in the art.

Application content

In view of this, the technical problem to be solved by the present application is how to improve the heat dissipation efficiency. To this end, the present application provides a radiator, an outdoor unit, and an air conditioner.

To achieve the above objective, the present application provides the following technical solutions:

A heat sink includes a heat dissipation substrate and a heat pipe in an annular structure, the heat pipe including an evaporation section and a condensation section, and the evaporation section is disposed on the heat dissipation substrate.

Preferably, in the above heat sink, the inside of the evaporation section is provided with a siphon structure.

Preferably, in the above heat sink, the siphon structure is a groove, a metal mesh or a metal powder layer.

Preferably, in the above heat sink, the evaporation section is disposed on the heat dissipation substrate in a vertical direction.

Preferably, in the above heat sink, the condensation section is a light pipe.

Preferably, in the above heat sink, the tube connecting the evaporation section and the condensation section is an adiabatic section, and the heat insulation section is provided with a heat insulation layer outside.

Preferably, in the above heat sink, the heat pipe is further provided with a charging port for pouring the refrigerant, and a plug for closing the charging port.

Preferably, in the above heat sink, the charging port is disposed on the insulating portion located at the upper portion.

Preferably, in the above heat sink, the heat pipe is a flat pipe, a round pipe or a square pipe.

Preferably, in the above heat sink, the heat pipe has a waist structure.

Preferably, in the above heat sink, the number of the heat pipes is plural.

Preferably, in the above heat sink, the distance between adjacent heat pipes is 5 mm to 30 mm.

Preferably, in the above heat sink, the heat sink further includes a plurality of heat dissipating fins disposed on the condensation section.

Preferably, in the above heat sink, the heat dissipating fin has a width of 5 mm to 100 mm.

Preferably, in the above heat sink, the distance between the adjacent heat dissipating fins is 2 mm to 10 mm.

Preferably, in the heat sink, any one of the heat dissipating fins on each of the heat pipes and any one of the heat dissipating fins on the adjacent heat pipe are different heat dissipating fins; or

Any one of the heat dissipating fins on each of the heat pipes and the adjacent heat dissipating fins on the adjacent ones of the heat pipes are the same heat dissipating fins.

The present application also discloses an outdoor unit comprising the heat sink of any of the above.

The present application also discloses an air conditioner comprising the outdoor unit of any of the above.

It can be seen from the above technical solution that, by using the heat sink in the embodiment of the present application, the heat of the refrigerant absorbed in the evaporation section of the heat pipe from the liquid state to the gaseous state enters the condensation section, and the refrigerant transfers heat to the environment in the condensation section. From the gaseous state to the liquid reflux to the evaporation section, the cycle is repeated, so that the heat on the heat dissipation substrate can be effectively radiated to the environment. Compared with the prior art, the present application dissipates heat by the phase change of the refrigerant, and can significantly improve the heat dissipation efficiency.

DRAWINGS

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present application, and other drawings can be obtained according to the drawings without any creative work for those skilled in the art.

1 is a schematic structural view of a heat sink provided by the prior art;

2 is a front view of a heat sink according to an embodiment of the present application;

3 is a schematic left side view of a heat sink according to an embodiment of the present application;

4 is a schematic right side view of a heat sink according to an embodiment of the present application;

FIG. 5 is a schematic top plan view of a heat sink according to an embodiment of the present application; FIG.

FIG. 6 is a schematic front view of a heat pipe according to an embodiment of the present application; FIG.

7 is a schematic left side view of a heat pipe according to an embodiment of the present application;

8 is a schematic right side view of a heat pipe according to an embodiment of the present application;

9 is a schematic top plan view of a heat pipe according to an embodiment of the present application;

FIG. 10 is a schematic perspective structural view of an outdoor unit according to an embodiment of the present application.

1 is an outdoor unit, 10 is a heat exchanger, 100 is a heat sink substrate, 200 is a heat sink fin, 300 is a heat pipe, 301 is an evaporation section, 302 is a condensation section, 303 is a heat insulation section, and 304 is a charging port.

Detailed ways

The core of the application is to disclose a radiator, an outdoor unit and an air conditioner to improve heat dissipation efficiency.

Hereinafter, embodiments will be described with reference to the drawings. Furthermore, the embodiments shown below do not limit the application of the claims. Further, the entire contents of the configurations shown in the following embodiments are not necessarily limited to the solutions of the application described in the claims.

Referring to FIG. 2 to FIG. 10 , the heat sink 10 in the embodiment of the present application includes a heat dissipation substrate 100 and a heat pipe 300 having an annular structure. The heat pipe 300 includes an evaporation section 301 and a condensation section 302 , and the evaporation section 301 is disposed on the heat dissipation substrate 100 . on.

With the heat sink 10 in the embodiment of the present application, the heat of the refrigerant absorbing the heat-dissipating substrate 100 in the evaporation section 301 of the heat pipe 300 changes from a liquid state to a gas state to the condensation section 302, and the refrigerant transfers heat to the environment in the condensation section 302. The liquid is returned to the evaporation section 301 so as to reciprocate, so that the heat on the heat dissipation substrate 100 can be efficiently radiated to the environment. Compared with the prior art, the present application dissipates heat by the phase change of the refrigerant, and can significantly improve the heat dissipation efficiency.

In addition, the heat transfer of the heat pipe 300 is performed by the phase change of the refrigerant, and the temperature uniformity of the heat sink 10 is better than that of the heat sink 10 of the prior art.

It should be noted that the above-mentioned annular structure may be a ring structure, a waist structure, an elliptical ring structure, a rectangular ring structure or the like.

In the illustration, the positional relationship when the air conditioner is actually used, the evaporation section 301 of the heat pipe 300 may be disposed on the heat dissipation substrate 100 in any direction, for example, on the heat dissipation substrate 100 in the horizontal direction, or on the heat dissipation substrate in the vertical direction. 100 on.

Since the heat pipe 300 has an annular structure, in order to further increase the heat dissipation efficiency, the condensation section 302 and the evaporation section 301 are disposed opposite to each other in the embodiment of the present application. When the evaporation section 301 is disposed on the heat dissipation substrate 100 in the horizontal direction, the condensation section 302 is also arranged in the horizontal direction; when the evaporation section 301 is disposed on the heat dissipation substrate 100 in the vertical direction, the condensation section 302 is also arranged in the vertical direction.

In order to reduce the resistance during the refrigerant circulation and to improve the uniformity of the distribution of the refrigerant in the evaporation section 301, the inside of the evaporation section 301 is provided with a siphon structure. The siphon structure is a groove, a metal mesh or a metal powder layer. As long as the structure capable of siphoning is within the protection scope of the embodiments of the present application. Under the action of the siphon structure, when the refrigerant returning from the condensation section 302 passes through the siphon structure, the refrigerant can be sucked into the evaporation section 301 by the action of the siphon principle.

In Fig. 2-10, the heat pipe 300 is a waist structure, wherein one of the two straight pipe sections is the evaporation section 301, the other is the condensation section 302, and the pipe between the evaporation section 301 and the condensation section 302 is the heat insulation section 303. The evaporation section 301 and the condensation section 302 are both arranged in a vertical direction, wherein the evaporation section 301 is internally provided with a siphon structure, and the condensation section 302 is a light pipe.

The heat of the refrigerant absorbing the heat-dissipating substrate 100 in the evaporation section 301 of the heat pipe 300 changes from a liquid state to a gas state, and then enters the condensing section 302 through the insulating section 303 located at the upper portion, and the refrigerant transfers heat to the environment in the condensing section 302 to change from a gaseous state to a liquid state. The refrigerant is returned to the evaporation section 301 through the thermal insulation section 303 located under the action of its own gravity. Under the action of the siphon structure of the evaporation section 301, the liquid refrigerant continuously flows upward against the gravity source, so that the cycle can be effective. The heat on the heat dissipation substrate 100 is radiated to the environment.

In the embodiment of the present application, the heat pipe 300 has an annular structure, and the portions connecting the evaporation section 301 and the two ends of the condensation section 302 are both the heat insulation sections 303. In order to reduce the heat loss, the heat insulation section 303 is provided with a heat insulation layer outside.

The heat pipe 300 is further provided with a charging port 304 for injecting the refrigerant, and a plug for closing the charging port 304. The refrigerant is evacuated and filled with the refrigerant through the refrigerant port, and after the completion of the filling, the charging port 304 is sealed by the plug to prevent the refrigerant from leaking. Preferably, the charging port 304 is disposed on the upper heat insulating tube 303.

It should be noted that the shape of the heat pipe may be any shape, for example, the heat pipe 300 is a flat pipe, a round pipe or a square pipe. The heat dissipation substrate 100 may be copper, aluminum or other metal material having good thermal conductivity. It should be noted that the type of refrigerant in the heat pipe heat exchanger is not limited, and the refrigerant may be a common refrigerant such as R410A or R134a, and other refrigerants may be selected according to actual use conditions.

The number of the heat pipes 300 is plural, and the number of the heat pipes 300 in the figure is three, which occupies less space. There is a certain gap between the different heat pipes 300, which can shorten the air flow path and reduce the flow resistance. The effect between the adjacent heat pipes 300 is between 5 mm and 30 mm.

The heat sink 10 also includes a plurality of heat dissipating fins 200 disposed on the condensation section 302.

It should be noted that the size of the heat pipe 300 and the heat dissipating fins 200 may be determined according to specific conditions, as long as the above structures are within the protection scope of the embodiments of the present application. Preferably, the heat dissipating fins 200 have a width of 5 mm to 100 mm. The effect between the adjacent heat dissipating fins 200 is between 2 mm and 10 mm.

Any one of the heat dissipating fins 200 on each of the heat pipes 300 and the heat dissipating fins 200 of any one of the adjacent heat pipes 300 are different heat dissipating fins 200. That is, each of the heat pipes 300 corresponds to the independent heat radiating fins 200; or any one of the heat radiating fins 200 of each heat pipe 300 and the adjacent heat radiating fins 200 of the adjacent heat pipes 300 are the same heat radiating fins 200. All of the heat pipes 300 share a set of heat dissipating fins 200, that is, each of the heat dissipating fins 200 is disposed on all of the heat pipes 300.

Preferably, in the embodiment of the present application, the heat dissipating fins 200 of each heat pipe 300 are separately separated. Compared with the heat dissipating fins 200 connected together, the heat dissipating fins 200 are more simple to process and easier to wear. It is suitable for machining, and each heat pipe 300 can be mounted on the heat dissipation substrate 100 after the heat dissipation fins 200 are worn.

The present application also discloses an outdoor unit 1 comprising the heat sink 10 of any of the above. Since the above-described heat sink 10 has the above-described advantageous effects, the outdoor unit 1 including the heat sink 10 has a corresponding effect, and details are not described herein again.

The present application also discloses an air conditioner comprising the outdoor unit 1 of any of the above. Since the outdoor unit 1 described above has the above-described advantageous effects, the air conditioner including the outdoor unit 1 has a corresponding effect, and details are not described herein again.

According to the test on our existing machine, the IPM, rectifier bridge, diode, IGBT and other power components can be reduced by 2~10 °C on the existing basis (as shown in Table 1 below).

Table 1: Comparison of temperature of power components in the embodiments of the present application and prior art

The above description of the disclosed embodiments enables those skilled in the art to make or use the application. Various modifications to these embodiments are obvious to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the application. Therefore, the application is not limited to the embodiments shown herein, but is to be accorded the broadest scope of the principles and novel features disclosed herein.

Claims (18)

A heat sink comprising a heat dissipating substrate (100), characterized in that the heat sink further comprises a heat pipe (300) in an annular structure, the heat pipe (300) comprising an evaporation section (301) and a condensation section (302) The evaporation section (301) is disposed on the heat dissipation substrate (100). The heat sink according to claim 1, wherein the interior of the evaporation section (301) is provided with a siphon structure. The heat sink according to claim 2, wherein the siphon structure is a groove, a metal mesh or a metal powder layer. The heat sink according to claim 2, characterized in that the evaporation section (301) is arranged on the heat dissipation substrate (100) in a vertical direction. The heat sink of claim 1 wherein said condensation section (302) is a light pipe. The heat sink according to claim 1, wherein the tube connecting the evaporation section (301) and the condensation section (302) is a heat insulating section (303), and the heat insulating section (303) is provided with a partition outside. Hot layer. The heat sink according to claim 6, wherein the heat pipe (300) is further provided with a charging port (304) for filling the refrigerant, and a plug for closing the charging port (304). The heat sink according to claim 7, wherein said charging port (304) is disposed on the upper heat insulating section (303). The heat sink according to claim 1, wherein the heat pipe (300) is a flat pipe, a circular pipe or a square pipe. The heat sink according to claim 1, wherein said heat pipe (300) has a waist structure. The heat sink according to claim 1, wherein the number of the heat pipes (300) is plural. The heat sink according to claim 11, wherein a distance between adjacent heat pipes (300) is 5 mm to 30 mm. The heat sink of claim 11 wherein said heat sink further comprises a plurality of heat dissipating fins (200) disposed on said condensation section (302). The heat sink according to claim 13, wherein said heat dissipating fins (200) have a width of 5 mm to 100 mm. The heat sink according to claim 13, wherein a distance between adjacent ones of said heat dissipating fins (200) is from 2 mm to 10 mm. The heat sink according to claim 13, wherein any one of said heat dissipating fins (200) on each of said heat pipes (300) and said one of said adjacent heat pipes (300) The fins (200) are different heat dissipating fins (200); or Any one of the heat dissipating fins (200) on each of the heat pipes (300) and the heat dissipating fins (200) adjacent to the adjacent ones of the heat pipes (300) are the same heat dissipating fins (200) ). An outdoor unit characterized by comprising the heat sink according to any one of claims 1 to 16. An air conditioner comprising the outdoor unit according to claim 17.

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