CN114508798A - Radiator and air condensing units - Google Patents

Abstract

The application relates to the technical field of air conditioning, and discloses a radiator, includes: the base comprises a first surface and a second surface which are opposite, wherein the first surface is provided with a groove, and the second surface is provided with a fin group; the micro-groove flat heat pipe is arranged in the groove, the micro-groove flat heat pipe internally comprises a plurality of grooves, and heat transfer working mediums are filled in the grooves; the first surface of the base comprises a first side part and a second side part which are opposite, and the channel is obliquely arranged from the first side part to the second side part. The heat transfer working medium in the channel of the micro-groove flat heat pipe conducts heat in a phase change manner, the inclination angle of the channel ranges from 0 to 90 degrees, and the channel of the micro-groove flat heat pipe is arranged in an inclined manner, so that the heat transfer working medium can conveniently flow back, the heat transfer efficiency is accelerated, and the purpose of efficient phase change heat transfer of the micro-groove flat heat pipe is facilitated; the heat is transferred to the fin group through the base to be radiated and cooled, and the radiating efficiency of the radiator is improved. The application also discloses an air conditioner outdoor unit.

Description

Radiator and air condensing units

Technical Field

The present application relates to the field of air conditioning technologies, and for example, to a heat sink and an outdoor unit of an air conditioner.

Background

The frequency conversion power device is an important component in the frequency conversion air conditioner, and the higher the frequency of the compressor is, the more the heat productivity of the frequency conversion power device is. In addition, because the design of the frequency conversion power device is compact, the heat flow and the power density of the frequency conversion power device in the working process are continuously increased. Therefore, the cooling performance and reliability of the air conditioner under high-temperature working conditions are seriously affected by the heat dissipation problem of the variable-frequency power device.

For the multi-split air conditioner, the frequency conversion power device mainly adopts a multifunctional integrated high-power frequency conversion module. The frequency conversion module generally carries out heat dissipation and cooling in an air cooling aluminum fin mode. However, under the working condition of high ambient temperature, the temperature of the frequency conversion module is increased sharply because the high heat flux density and high power of the frequency conversion module cannot be effectively dissipated by using an aluminum fin radiator. In order to ensure the safety of the frequency conversion module and avoid the frequency conversion module from being burnt due to overheating, the frequency conversion module is generally prevented from being overhigh in temperature by adopting a compressor frequency reduction mode, but the refrigeration capacity of the air conditioner is greatly reduced in a high-temperature environment.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

the current radiator has insufficient heat dissipation capacity on the frequency conversion module under the high-temperature refrigeration working condition, so that the air conditioner greatly reduces the frequency, and the environment refrigeration effect in high-temperature days is poor.

Disclosure of Invention

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.

The embodiment of the disclosure provides a radiator and an air conditioner outdoor unit, so as to solve the problem that the radiating effect of the radiator is poor.

In some embodiments, the heat sink comprises: the base comprises a first surface and a second surface which are opposite, wherein the first surface is provided with a groove, and the second surface is provided with a fin group; the microgroove flat heat pipe is arranged in the groove, the microgroove flat heat pipe internally comprises a plurality of channels, and the channels are filled with heat transfer working mediums; wherein the first surface of the base includes opposing first and second sides, the channel being disposed obliquely from the first side to the second side.

In some embodiments, in a case where the base is vertically installed, the channel is disposed to be inclined in a bottom-up direction from the first side portion to the second side portion.

In some embodiments, the channel includes a first heat transfer area and a second heat transfer area disposed in sequence from the first side portion to the second side portion; the first surface of the base comprises a mounting area which is used for being in heat conduction connection with a frequency conversion module to be cooled; wherein the mounting area partially or completely overlaps the first heat transfer area.

In some embodiments, a plurality of micro fins are arranged on the side wall of the channel, and a capillary micro groove is formed between two adjacent micro fins.

In some embodiments, the channel comprises: a first sidewall flush with the first surface of the base; and the second side wall is opposite to the first side wall, wherein a plurality of micro fins are arranged on the first side wall and the second side wall.

In some embodiments, the channels of the micro-grooved flat plate heat pipe are perpendicular to the fins in the fin set.

In some embodiments, the outdoor unit of an air conditioner includes: the heat sink provided in the foregoing embodiments.

In some embodiments, the first side and the second side of the first surface of the base are perpendicular to the top of the outdoor unit; and/or the included angle between the channel and the bottom of the air conditioner outdoor unit ranges from 0 degree to 90 degrees.

In some embodiments, the outdoor unit of an air conditioner further includes: the air conditioner comprises a fan arranged at the top of the air conditioner outdoor unit and a frequency conversion module vertically installed, wherein the frequency conversion module is in heat conduction connection with an installation area of the first surface of the base of the radiator.

In some embodiments, the fins in the fin group of the radiator are perpendicular to the top of the outdoor unit of the air conditioner.

The radiator and the air conditioner outdoor unit provided by the embodiment of the disclosure can realize the following technical effects:

the heat radiator provided by the embodiment of the disclosure comprises a base and a micro-groove flat heat pipe, wherein the heat transfer working medium in the channel of the micro-groove flat heat pipe is subjected to phase change heat transfer, and the channel of the micro-groove flat heat pipe is obliquely arranged, so that the heat transfer working medium can conveniently flow back, the heat transfer efficiency is accelerated, and the purpose of realizing the high-efficiency phase change heat transfer of the micro-groove flat heat pipe is facilitated; in addition, the temperature uniformity of the base after heat is transferred to the base and the overall temperature uniformity and heat dissipation efficiency of the heat radiator are improved. The heat is transmitted to the fin group through the base to be radiated and cooled, so that the high-efficiency radiation of the radiator to the frequency conversion module under the high-temperature working condition is realized, and the refrigeration effect of the air conditioner under the high-temperature working condition is guaranteed.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:

fig. 1 is a schematic structural diagram of a heat sink provided in an embodiment of the present disclosure;

FIG. 2 is a schematic cross-sectional view of a micro-grooved flat heat pipe provided by an embodiment of the present disclosure;

FIG. 3 is another schematic cross-sectional view of a micro-grooved flat plate heat pipe provided by an embodiment of the present disclosure;

FIG. 4 is a schematic view of another structure of a heat sink provided by the embodiment of the present disclosure;

fig. 5 is another schematic structural diagram of a heat sink provided in the embodiments of the present disclosure;

fig. 6 is a schematic partial structure diagram of an outdoor unit of an air conditioner according to an embodiment of the present disclosure.

Reference numerals:

10: a base; 101: a first surface; 1011: a first side portion; 1012: a second side portion; 1013: an installation area; 102: a second surface; 103: a groove; 20: a micro-groove flat heat pipe; 201: a channel; 202: a heat transfer working medium; 203: a micro fin; 204: a capillary micro-groove; 205: a first heat transfer area; 206: a second heat transfer area; 2011: a first side wall; 2012: a second side wall; 30: a fin set; 40: a fan; 50: a compressor; 100: an air outlet; 200: and an air inlet.

Detailed Description

So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.

The terms "first," "second," and the like in the description and in the claims, and the above-described drawings of embodiments of the present disclosure, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present disclosure described herein may be made. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.

In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the disclosed embodiments and their examples and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation. Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art as appropriate.

In addition, the terms "disposed," "connected," and "secured" are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. Specific meanings of the above terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art according to specific situations.

The term "plurality" means two or more unless otherwise specified.

In the embodiment of the present disclosure, the character "/" indicates that the preceding and following objects are in an or relationship. For example, A/B represents: a or B.

The term "and/or" is an associative relationship that describes objects, meaning that three relationships may exist. For example, a and/or B, represents: a or B, or A and B.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

With reference to fig. 1 to 5, an embodiment of the present disclosure provides a heat sink including: the heat pipe comprises a base 10 and a micro-groove flat heat pipe 20, wherein the base 10 comprises a first surface 101 and a second surface 102 which are opposite, the first surface 101 is provided with a groove 103, and the second surface 102 is provided with a fin group 30; the micro-groove flat heat pipe 20 is arranged in the groove 103, the interior of the micro-groove flat heat pipe 20 comprises a plurality of grooves 201, and heat transfer working media 202 are filled in the grooves 201; wherein the first surface 101 of the base 10 includes a first side 1011 and a second side 1012 opposite to each other, the channel 201 is disposed obliquely from the first side 1011 to the second side 1012.

By adopting the radiator provided by the embodiment of the disclosure, the heat transfer working medium 202 in the channel 201 of the micro-groove flat heat pipe 20 transfers heat in a phase change manner, and the channel 201 of the micro-groove flat heat pipe 20 is obliquely arranged, so that the heat transfer working medium 202 can conveniently flow back, the heat transfer efficiency is accelerated, and the purpose of realizing the high-efficiency phase change heat transfer of the micro-groove flat heat pipe 20 is facilitated; in addition, the temperature uniformity of the base 10 after the heat is transferred to the base 10, and the temperature uniformity and the heat dissipation efficiency of the whole heat sink are improved. The heat is transmitted to the fin group 30 through the base 10 to be radiated and cooled, so that the high-efficiency radiation of the radiator to the frequency conversion module under the high-temperature working condition is realized, and the refrigeration effect of the air conditioner under the high-temperature working condition is guaranteed.

The micro-groove flat plate heat pipe 20 may be welded to the base 10. Therefore, the micro-groove flat heat pipe 20 and the base 10 can be fixedly connected, and the bonding degree between the base 10 and the micro-groove flat heat pipe 20 is improved, so that the heat transfer efficiency between the base 10 and the micro-groove flat heat pipe 20 is improved. Optionally, the base 10 and the micro-groove flat heat pipe 20 are bonded by coating a heat conductive silicone. Optionally, a heat conducting sheet may be disposed between the base 10 and the micro-groove flat heat pipe 20. Optionally, the side of the micro-groove flat heat pipe 20 is attached to the inner side wall of the groove 103. This can improve the heat transfer efficiency between the susceptor 10 and the micro-groove flat heat pipe 20. Optionally, the material of the base 10 is aluminum.

Alternatively, the fin set 30 may be a folded fin or a finned heat sink. Wherein each fin of the fin set 30 is perpendicular to the second surface 102 of the base 10. The fin group 30 can quickly disperse the heat transferred by the base 10, thereby enlarging the heat dissipation area of the heat sink and improving the heat dissipation efficiency of the heat sink. Alternatively, the base 10 and the fin group 30 may be integrally formed. Such as an aluminum extrusion heat sink.

In practice, the channel 201 is inclined from the first side 1011 to the second side 1012 by the first surface 101 of the base 10 comprising opposite first 1011 and second 1012 sides, such that the liquid heat transfer medium in the channel 201 flows downwardly under the influence of gravity and accumulates in a relatively downward position. For ease of distinction and description herein, channel 201 is divided into a first channel and a second channel, wherein the first channel is lower than the second channel. The liquid heat transfer medium in the channel 201 is accumulated in the first channel, and the liquid heat transfer medium is heated, changed into the gaseous heat transfer medium, and moves upwards along the side wall of the channel 201, namely, towards the second channel. The gaseous heat transfer medium carries heat away from the first channel. Wherein, first channel can be connected with the higher frequency conversion module heat conduction of calorific capacity, like this, can dispel the heat fast to the higher frequency conversion module of calorific capacity, improves the temperature uniformity of base 10, and then improves the radiating efficiency of radiator. Alternatively, heat transfer fluid 202 may be acetone, ammonia, or a refrigerant.

Alternatively, in the case where the base 10 is vertically installed, the chute 201 is provided obliquely in a bottom-up direction from the first side 1011 to the second side 1012. That is, the channel 201 proximate the first side 1011 is lower than the channel 201 proximate the second side 1012. Optionally, the inclination angle of the channel ranges from 0 to 90 °. Thus, the liquid heat transfer medium in the channel 201 is accumulated in the channel 201 near the first side 1011 under the action of gravity. The liquid heat transfer medium is heated, the temperature is increased, the liquid heat transfer medium is vaporized to form the gaseous heat transfer medium, the gaseous heat transfer medium moves upwards, namely moves towards the channel 201 close to the second side portion 1012 to dissipate heat, and the gaseous heat transfer medium brings the heat away from the channel 201 close to the first side portion 1011. Gaseous heat transfer working medium in the channel 201 close to the second side portion 1012 is condensed to become liquid heat transfer working medium, and the liquid heat transfer working medium can quickly flow back to the channel 201 close to the first side portion 1011 under the action of gravity through the inclined arrangement of the channel 201 to perform the next heat cycle.

In practical application, the frequency conversion module with higher calorific value is in heat conduction connection with the channel 201 close to the first side 1011, so that the liquid heat transfer working medium accumulated in the channel 201 close to the first side 1011 exchanges heat with the frequency conversion module with higher calorific value, the liquid heat transfer working medium is heated, the temperature is increased, the liquid heat transfer working medium is vaporized to form a gaseous heat transfer working medium, the gaseous heat transfer working medium moves upwards, namely moves towards the channel 201 close to the second side 1012 to dissipate heat, and the heat is carried away from the channel 201 close to the first side 1011; the frequency conversion module is beneficial to fast heat dissipation and cooling, and the frequency conversion module is prevented from being burnt out due to overhigh temperature.

In addition, under the condition that base 10 is vertically installed, if base 10 slope installation, then the mode that accessible channel 201 slope set up is adjusted, prevents that the radiator from because of base 10 slope installation or radiator place unstability, and the radiating efficiency that causes is low and the poor problem of radiating effect.

Optionally, as shown in fig. 1 and 4, the channel 201 includes a first heat transfer area 205 and a second heat transfer area 206 arranged in sequence from the first side 1011 to the second side 1012; the first surface 101 of the base 10 comprises a mounting area 1013 for thermally conductive connection with a frequency conversion module to be cooled; wherein the mounting area 1013 overlaps partially or completely with the first heat transfer area 205.

With the above embodiment, the channel 201 is inclined from the first side 1011 to the second side 1012 in the bottom-up direction. Thus, the first heat transfer area 205 is lower than the second heat transfer area 206. The liquid heat transfer medium in channel 201 accumulates in first heat transfer area 205. It will be appreciated that liquid heat transfer medium is located in mounting area 1013 and gaseous heat transfer medium is located in second heat transfer area 206, wherein the temperature of second heat transfer area 206 is higher than the temperature of first heat transfer area 205. The frequency conversion module to be cooled, which is in heat-conducting connection with the installation area 1013 of the base 10, performs heat exchange with a liquid heat transfer working medium, so that the frequency conversion module not only can quickly dissipate heat and cool, avoid over-high temperature and burnout, but also can improve the temperature uniformity of the base 10.

In the case where the installation area 1013 partially overlaps the first heat transfer area 205, a portion of the inverter module to be cooled, where the amount of heat generation is high, is located in the installation area 1013. Therefore, heat exchange is carried out between the variable frequency module and the liquid heat transfer working medium, and the heat dissipation efficiency of the variable frequency module to be cooled can be improved.

Optionally, a plurality of micro fins 203 are disposed on the side wall of the channel 201, and a capillary micro groove 204 is formed between two adjacent micro fins 203.

The groove 201 of the micro-groove flat plate heat pipe 20 is vacuumized and is a vacuum chamber with two closed ends. Wherein, a plurality of channels 201 of the micro-groove flat plate heat pipe 20 are arranged in parallel, and each channel 201 is filled with a heat transfer working medium 202. A plurality of micro fins 203 are arranged on the side wall of the channel 201, wherein the micro fins 203 are arranged at even intervals. In actual use, the micro-fins 203 are horizontal. The plurality of micro fins 203 on the same side wall in the channel 201 are stacked, which is beneficial to enabling the heated liquid heat transfer working medium to move upwards along the micro fins 203 under the driving of the gaseous heat transfer working medium, so as to play a role of gravity prevention for the heat transfer working medium 202. When heat transfer medium 202 is in a liquid state, the volume of heat transfer medium 202 in channel 201 is less than the volume of channel 201. The liquid heat transfer working medium is heated, the temperature is increased, the liquid heat transfer working medium is vaporized to form the gaseous heat transfer working medium, the gaseous heat transfer working medium moves upwards, part of the gaseous heat transfer working medium moves to the upper surface of the micro fins 203 and then is blocked by the micro fins 203 above and cannot move upwards, the gaseous heat transfer working medium is stored in the capillary channels 201 of the adjacent micro fins 203, and after the gaseous heat transfer working medium exchanges heat with the base 10 and the fin group 30 dissipates heat and cools, the temperature is reduced and condensed into the liquid heat transfer working medium.

Optionally, the channel 201 includes a first sidewall 2011 and a second sidewall 2012, the first sidewall 2011 being flush with the first surface 101 of the base 10; the second sidewall 2012 is opposite to the first sidewall 2011, wherein the first sidewall 2011 and the second sidewall 2012 are each provided with a plurality of micro-fins 203. The "first sidewall 2011 is flush with the first surface 101 of the base 10" may be understood as: the first side wall 2011 is located on the same plane as the first surface 101 of the base 10, or the first side wall 2011 is located on a plane parallel to the first surface 101 of the base 10.

In this way, the first side wall 2011 of the channel 201 is flush with the first surface 101 of the base 10, which helps to view the base 10 and the micro-groove flat heat pipe 20 as a single unit after the micro-groove flat heat pipe 20 is assembled with the base 10. Under the installation condition of base 10 and frequency conversion module, first lateral wall 2011 and the first surface 101 of base 10 parallel and level of channel 201 help improving the temperature uniformity of microgroove flat plate heat pipe 20 and frequency conversion module in carrying out the heat exchange process, have effectively reduced the temperature difference everywhere of base 10 first surface 101. In addition, the heat dissipation area of the micro-groove flat heat pipe 20 can be increased by the plurality of micro-fins 203 on the first side wall 2011, so that the heat conduction efficiency between the micro-groove flat heat pipe 20 and the frequency conversion module is increased. In practical application, the heat of the frequency conversion module is transferred to the heat transfer working medium 202 in contact with the micro fin 203 of the first side wall 2011 through the micro fin 203 of the first side wall 2011, the heat transfer working medium 202 is heated to change phase, the carried heat is transferred to the micro fin 203 of the second side wall 2012, the micro fin 203 of the second side wall 2012 transfers the heat to the base 10, the base 10 transfers the heat to the fin group 30 for heat dissipation and cooling, and the heat dissipation efficiency of the heat sink to the frequency conversion module is improved.

Alternatively, the plurality of micro fins 203 on the first side wall 2011 are arranged at even intervals. Optionally, the plurality of micro fins 203 on the second sidewall 2012 are evenly spaced. Thus, the heat distribution in the micro-groove flat heat pipe 20 is uniform, and the temperature uniformity of the micro-groove flat heat pipe 20 is improved. Optionally, the plurality of micro-fins 203 on the first sidewall 2011 are aligned with the plurality of micro-fins 203 on the second sidewall 2012, respectively. In this way, in the case that the first side wall 2011 and the second side wall 2012 are integrally formed, the alignment of the plurality of micro fins 203 on the first side wall 2011 and the plurality of micro fins 203 on the second side wall 2012 are respectively beneficial to processing and manufacturing. Optionally, the plurality of micro-fins 203 on the first sidewall 2011 are staggered from the plurality of micro-fins 203 on the second sidewall 2012. Like this, set up through a plurality of micropins 203 on first lateral wall 2011 and a plurality of micropins 203 on second lateral wall 2012 crisscross, can make the heat of a plurality of micropins 203 on first lateral wall 2011 and the heat of a plurality of micropins 203 on second lateral wall 2012 intersect, avoid the heat of the flat heat pipe 20 of microgroove same cross section department too high, reduced the surface temperature difference of the flat heat pipe 20 of microgroove, improved the temperature uniformity nature of the flat heat pipe 20 of microgroove.

Alternatively, the first side wall 2011 and the micro fin 203 provided to the first side wall 2011 are integrally formed. In this way, the efficiency of heat conduction between the first side wall 2011 and the micro fins 203 is improved. Optionally, the second sidewall 2012 is integrally formed with the micro-fins 203 disposed on the second sidewall 2012. In this way, the efficiency of heat conduction between the second sidewall 2012 and the micro-fins 203 is facilitated to be improved.

Optionally, the channels 201 of the micro-grooved flat plate heat pipe 20 are perpendicular to the fins in the fin group 30. In this way, the heat dissipation area of the heat sink is enlarged by the fins in the fin group 30, the heat of the micro-groove flat heat pipe 20 is transferred to the fin group 30 through the base 10, and the channel 201 of the micro-groove flat heat pipe 20 is perpendicular to the fins in the fin group 30, so that the heat can be rapidly transferred to each fin in the fin group 30 and is uniformly distributed.

The embodiment of the disclosure provides an air conditioner outdoor unit, which comprises the radiator provided in the embodiment.

The microgroove flat heat pipe 20 embedded in the base 10 exchanges heat with the frequency conversion module, heat is transmitted to the fin group 30 through the frequency conversion module, the microgroove flat heat pipe 20 and the base 10 in sequence, and heat is dissipated through the fin group 30, so that the heat dissipation efficiency of the radiator is improved. The radiator adopts the micro-groove flat plate heat pipe 20 to improve the temperature uniformity of the radiator base 10 and ensure the refrigeration effect of the outdoor unit of the air conditioner under the high-temperature working condition. Referring to fig. 2 and 6, fig. 2 is a vertical sectional view of the micro-groove flat heat pipe 20 in the base 10 in the mounting state of the heat sink in the outdoor unit of the air conditioner. In the use condition of the heat sink, the base 10 is vertically installed, and the micro fins 203 of the micro-groove flat heat pipe 20 are horizontally arranged. The liquid heat transfer working medium is driven by the gaseous heat transfer working medium, and the liquid heat transfer working medium moves upwards along the micro fins 203 to play a role of gravity prevention for the heat transfer working medium 202.

Alternatively, the first side 1011 and the second side 1012 of the first surface 101 of the base 10 are both perpendicular to the top of the outdoor unit of the air conditioner; and/or the included angle range of the channel and the bottom of the air conditioner outdoor unit is 0-90 degrees. Thus, after the micro-groove flat heat pipe 20 is assembled with the base 10, the groove 201 in the micro-groove flat heat pipe 20 is inclined in the use state. The liquid heat transfer medium in the channel 201 is accumulated in the channel 201 near the first side 1011 under the action of gravity. The liquid heat transfer medium is heated, the temperature is increased, the liquid heat transfer medium is vaporized to form the gaseous heat transfer medium, the gaseous heat transfer medium moves upwards, namely moves towards the channel 201 close to the second side portion 1012 to dissipate heat, and the gaseous heat transfer medium brings the heat away from the channel 201 close to the first side portion 1011. Gaseous heat transfer working medium in the channel 201 close to the second side portion 1012 is condensed to become liquid heat transfer working medium, and the liquid heat transfer working medium can quickly flow back to the channel 201 close to the first side portion 1011 under the action of gravity through the inclined arrangement of the channel 201 to perform the next heat cycle.

The included angle between the channel and the bottom of the air conditioner outdoor unit ranges from 0 degree to 90 degrees, and the included angle between the channel and the placing surface of the air conditioner outdoor unit ranges from 0 degree to 90 degrees. In the case that the outdoor unit is installed, the placing surface of the outdoor unit cannot be guaranteed to be a horizontal surface, and in this case, if the outdoor unit is inclined due to the uneven placing surface, the channel is inclined due to the inclination of the outdoor unit in the case that the channel is horizontally disposed. If the frequency conversion module with high heat productivity is positioned at the upper part of the inclined channel, the liquid heat transfer working medium cannot flow back to the part, so that the heat transfer efficiency of the heat transfer working medium and the frequency conversion module can be reduced, and the heat dissipation efficiency of the frequency conversion module is further reduced. By adopting the air conditioner outdoor unit provided by the embodiment of the disclosure, no matter whether the placing surface of the air conditioner outdoor unit is flat or not, the problems of low heat dissipation efficiency and poor heat dissipation effect caused by uneven placing surface of the air conditioner outdoor unit can be reduced by the way that the obliquely arranged channel and the frequency conversion module are in heat conduction connection with the first heat conduction area of the channel; the requirement on the flatness of the placing surface of the air conditioner outdoor unit in the prior art is overcome, and the application occasions of the air conditioner outdoor unit are expanded. In practical application, under the condition that the included angle between the channel and the placing surface of the air conditioner outdoor unit is not zero, the heat transfer wages in the channel can quickly flow back under the action of gravity, and the heat transfer and heat dissipation rates are accelerated. Experiments prove that the temperature of the frequency conversion module can be reduced by 5 ℃ more by the inclined arrangement. The effect is obvious. The "included angle between the channel and the bottom of the outdoor unit of the air conditioner" can be understood as follows: the channel is obliquely arranged relative to the bottom of the air conditioner outdoor unit, and the included angle between the central line of the channel and the bottom of the air conditioner outdoor unit is formed along the length direction of the channel. In practical applications, in the case that the base is vertically installed, and the first side 1011 and the second side 1012 of the first surface 101 of the base 10 are both perpendicular to the top of the outdoor unit of the air conditioner, the channel is obliquely arranged, and the oblique angle of the channel can be understood as an included angle between the channel and the bottom of the outdoor unit of the air conditioner, and can also be understood as an included angle between the channel and the bottom surface of the base.

Optionally, the outdoor unit further includes a fan 40 disposed at the top of the outdoor unit and a vertically installed inverter module, wherein the inverter module is thermally connected to the installation area 1013 of the first surface 101 of the base 10 of the heat sink.

The radiator is connected with frequency conversion module heat conduction, and be located the air inlet side of fan 40, frequency conversion module carries out the heat exchange with the base 10 of radiator, frequency conversion module's heat transmits the fin group 30 to the radiator through base 10, fin group 30 is located the air inlet wind path of fan 40, the air current acts on fin group 30, carry out the air-cooled heat dissipation to the fin in the fin group 30, the air current blows off the heat that fin group 30 carried away from the radiator, the radiating efficiency of radiator has been improved, and then the radiating effect of radiator to frequency conversion module has been promoted. Optionally, the outdoor unit of the air conditioner includes an air outlet 100 at the top and an air inlet 200 disposed circumferentially. In practical application, air is discharged from the top of the air conditioner outdoor unit, and air is circumferentially supplied. As shown in fig. 6, the air inlet 200 is disposed on a side wall of a casing of the outdoor unit, and an air flow enters from a side of the outdoor unit under a suction action of the fan 40, then flows upward, passes through the fan 40, and is discharged from the air outlet 100. Wherein, the air inlet direction of the air inlet 200 is crossed or vertical to the air outlet direction of the air outlet 100.

As shown in fig. 1 and 4, the dashed box shown in fig. 1 and 4 is the installation area 1013 of the frequency conversion module on the first surface 101 of the base 10.

The vertically mounted frequency conversion module is located on the air inlet side of the fan 40. The radiator in heat conduction connection with the frequency conversion module is located on the air inlet side of the fan 40 and in the air inlet path of the fan 40. The air current flows through the frequency conversion module and the radiator, not only can carry out air cooling heat dissipation on the fin group 30 of the radiator, but also can blow away part of heat generated by the work of the frequency conversion module from the frequency conversion module, and achieves the purpose of heat dissipation and cooling of the frequency conversion module.

In practical application, the base 10 and the frequency conversion module can be connected by screws or bolts, can be welded, and can be bonded by heat-conducting silica gel. Thus, the base 10 is favorably and closely attached to the frequency conversion module, and the heat exchange efficiency is improved. In addition, optionally, the outdoor unit of the air conditioner further includes a frequency conversion module mounting portion for mounting the frequency conversion module, and the base is in heat conduction connection with the frequency conversion module mounting portion. The frequency conversion module is arranged on the back of the frequency conversion module mounting part, and the base is connected with the back of the frequency conversion module mounting part in a heat conduction mode. The base and the frequency conversion module are respectively positioned on two sides of the same position on the back of the frequency conversion module mounting part. Can play the effect of protection frequency conversion module through frequency conversion module installation department, help reducing or avoid the adverse effect of surrounding environment to frequency conversion module, for example, rainwater, dust etc..

Alternatively, the fins in the fin group 30 of the radiator are perpendicular to the top of the outdoor unit of the air conditioner.

The inlet airflow of the outdoor unit of the air conditioner enters from the bottom of the gap between adjacent fins of the fin group 30, flows through the surface of the fins and then flows out from the top of the gap, blows heat away from the fin group 30, and performs air cooling on the fins in the fin group 30. The fins in the fin group 30 of the heat sink are perpendicular to the top of the outdoor unit of the air conditioner, that is, the fins are perpendicular to the plane where the fan 40 is located, so that the air flow flows through the fin group 30 of the heat sink under the action of the fan 40 and fully contacts the surface of each fin in the fin group 30, thereby improving the heat dissipation efficiency of the fin group 30.

Optionally, the fin set 30 of the heat sink is located directly below the fan 40. Therefore, the air-cooled radiating effect of the airflow on the fin group 30 can be improved, the radiating efficiency of the radiator is improved, and the radiating effect of the radiator on the frequency conversion module is further improved.

Alternatively, referring to fig. 6, the outdoor unit is a multi-split outdoor unit, and fig. 6 shows a partial structure of the outdoor unit in a rear view projection. The top of the air conditioner outdoor unit is used for air outlet, and the circumferential direction of the air conditioner outdoor unit is used for air inlet. And the airflow entering from the circumferential direction of the air conditioner outdoor unit flows through the frequency conversion module and the radiator in heat conduction connection with the frequency conversion module to dissipate heat and cool the frequency conversion module and the radiator.

Optionally, the outdoor unit of the multi-split air conditioner includes two radiators arranged laterally side by side.

Through setting up two radiators, be favorable to further improvement to frequency conversion module's radiating efficiency. The high-efficiency phase-change heat transfer of the micro-groove flat heat pipe 20 of the radiator improves the temperature uniformity of the base 10 of the radiator, thereby improving the temperature uniformity and the radiating efficiency of the whole radiator. Under the high temperature operating mode, carry out high-efficient heat dissipation to the frequency conversion module, prevent the problem that refrigerating capacity attenuates and compressor 50 shut down under the air conditioner high temperature environment.

In addition, two radiators that transversely set up side by side are mutually noninterfered at the radiating process, cool down the frequency conversion module that dispels the heat simultaneously, have improved the radiating efficiency to frequency conversion module once more, have promoted frequency conversion module's radiating effect.

The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (10)

1. A heat sink, comprising:

the base comprises a first surface and a second surface which are opposite, wherein the first surface is provided with a groove, and the second surface is provided with a fin group; and the combination of (a) and (b),

the micro-groove flat heat pipe is arranged in the groove, the micro-groove flat heat pipe internally comprises a plurality of grooves, and heat transfer working mediums are filled in the grooves;

wherein the first surface of the base includes opposing first and second sides, the channel being disposed obliquely from the first side to the second side.

2. The heat sink of claim 1,

when the base is vertically installed, the channel is obliquely arranged from the first side part to the second side part along the direction from bottom to top.

3. The heat sink of claim 1,

the channel comprises a first heat conduction area and a second heat conduction area which are sequentially arranged from the first side part to the second side part;

the first surface of the base comprises a mounting area which is used for being in heat conduction connection with a frequency conversion module to be cooled;

wherein the mounting area partially or completely overlaps the first heat transfer area.

4. The heat sink of claim 1,

the side wall of the channel is provided with a plurality of micro fins, and a capillary micro groove is formed between every two adjacent micro fins.

5. The heat sink of claim 1, wherein the channel comprises:

a first sidewall flush with the first surface of the base; and the combination of (a) and (b),

a second sidewall opposite the first sidewall,

wherein, all be provided with a plurality of micro-fins on first lateral wall and the second lateral wall.

6. The heat sink of claim 1,

the channel of the micro-groove flat heat pipe is vertical to the fins in the fin group.

7. An outdoor unit of an air conditioner, comprising the heat sink of any one of claims 1 to 6.

8. The outdoor unit of claim 7, wherein,

the first side part and the second side part of the first surface of the base are both vertical to the top of the air conditioner outdoor unit; and/or the presence of a gas in the gas,

the channel with the air condensing units bottom's contained angle scope is 0 ~ 90.

9. The outdoor unit of claim 7, further comprising:

a fan arranged on the top of the air-conditioning outdoor unit and a frequency conversion module vertically arranged,

wherein the inverter module is thermally coupled to the mounting region of the first surface of the base of the heat sink.

10. The outdoor unit of claim 7, wherein the fins of the fin group of the radiator are perpendicular to the top of the outdoor unit.

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