CN213272936U - Radiator and air condensing units - Google Patents

Abstract

The application relates to the technical field of heat dissipation, discloses a radiator, includes: the first heat transfer plate comprises a first evaporation section and a first condensation section which are connected, and the first condensation section is bent relative to the first evaporation section; the second heat transfer plate comprises a second evaporation section and a second condensation section which are connected, and the second condensation section is bent relative to the second evaporation section; the first evaporation section and the second evaporation section are arranged side by side, and the first condensation section and the second condensation section extend oppositely to each other. The radiator conducts heat transfer by arranging the first heat transfer plate and the second heat transfer plate, the first evaporation section and the second evaporation section are arranged side by side, heat absorption can be conducted on the heating element together, and the heat exchange area of the radiator and the heating element is increased; the first condensation section and the second condensation section extend away from each other, and condensation heat dissipation can be carried out in different area spaces. The heat dissipation efficiency of the radiator can be improved, and therefore the heat dissipation effect of the heating element with high heat flux density 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 heat dissipation technologies, and for example, to a heat sink and an outdoor unit of an air conditioner.

Background

Heat dissipation is currently of critical importance in the operation of electrical equipment. When electrical equipment runs, some parts are easy to generate heat, such as components of capacitors, induction coils, transformers and the like. The reason why the components generate heat can be considered as that the resistors generate heat when the current passes through the resistors and work needs to be done. The degree of heating also depends on the amount of power dissipated by the resistor. Capacitors are also prone to heat generation due to leakage loss, dielectric loss, electrode contact loss, and the like. The induction coil and the transformer also generate heat due to magnetic loss, electric loss and the like. Overheating can lead to damage to the device, such as scorching, melting, etc. Especially, in high-temperature weather, if the heat of the components is not dissipated in time, the operation of the electrical equipment is easy to make mistakes, and the use experience of a user is influenced.

The frequency conversion chip of the frequency conversion air conditioner also has the problems of heating and heat dissipation. The inverter air conditioner is the mainstream of the air conditioning industry at present, but with the continuous appearance of high-temperature weather in recent years, the high temperature of 42 ℃ or even close to 50 ℃ in summer attacks all over the world. The air conditioner does not refrigerate, and the refrigerating capacity is reduced to become a new complaining point of users.

The frequency conversion chip mainly comprises: IPM, IGBT, diode, rectifier bridge, etc. With the improvement of semiconductor technology, the chip design is more compact, the heat flux density of the device is continuously increased, and the volume of the device tends to be miniaturized. Therefore, the working safety and the high-temperature refrigerating capacity of the air conditioner are severely restricted by the problems of high temperature, high heat flux density and high power of the frequency conversion chip, such as heat generation and heat dissipation.

It can be seen that some heating elements have large heat flux density, and heat sources are concentrated, so that efficient heat dissipation needs to be performed on electrical equipment. Some electrical equipment reduce the temperature of the parts that generate heat by setting up the aluminium heating panel and dispel the heat to the parts that easily generate heat.

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 heat sink has a poor heat dissipation effect on the heating element with a high heat flux density.

SUMMERY OF THE UTILITY MODEL

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 radiator has a poor radiating effect on a heating element with a high heat flux density.

In some embodiments, a heat sink comprises: the first heat transfer plate comprises a first evaporation section and a first condensation section which are connected, and the first condensation section is bent relative to the first evaporation section; the second heat transfer plate comprises a second evaporation section and a second condensation section which are connected, and the second condensation section is bent relative to the second evaporation section; the first evaporation section and the second evaporation section are arranged side by side, and the first condensation section and the second condensation section extend oppositely to each other.

In some embodiments, the first evaporation stage is in contact with the second evaporation stage.

In some embodiments, the first condensation section and the second condensation section are at the same height and higher than the first evaporation section and the second evaporation section.

In some embodiments, the joint of the first evaporation section and the first condensation section, and the joint of the second evaporation section and the second condensation section are in a rotary bending shape.

In some embodiments, the heat sink further comprises: and the radiating fins are arranged on the first condensation section and/or the second condensation section.

In some embodiments, the fins are folded multiple times.

In some embodiments, a micro-groove heat pipe is arranged in the first heat transfer plate and used for circulating the heat transfer medium, and the micro-groove heat pipe extends from one end of the first heat transfer plate to the other end of the first heat transfer plate.

In some embodiments, a microchannel heat pipe comprises: a vacuum chamber for the flow of the heat transfer medium; and the capillary structure is arranged at the upper part and/or the lower part in the vacuum cavity.

In some embodiments, an outdoor unit of an air conditioner includes the heat sink as in any one of the previous embodiments.

In some embodiments, the outdoor unit of an air conditioner further includes: the base is detachably arranged on the first evaporation section and the second evaporation section; the electric control element is arranged on the base.

The radiator and the air conditioner outdoor unit provided by the embodiment of the disclosure can realize the following technical effects: the radiator conducts heat transfer by arranging the first heat transfer plate and the second heat transfer plate, wherein the first evaporation section of the first heat transfer plate and the second evaporation section of the second heat transfer plate are arranged side by side, so that heat absorption can be conducted on the heating element together, and the heat exchange area of the radiator and the heating element is increased; the first condensation section of the first heat transfer plate and the second condensation section of the second heat transfer plate extend away from each other, and condensation heat dissipation can be performed in different area spaces. Therefore, the heat dissipation efficiency of the radiator can be improved, and the heat dissipation effect of the heating element with high heat flux density is improved.

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 view of a heat sink structure provided by an embodiment of the present disclosure;

FIG. 2 is an exploded schematic view of FIG. 1;

FIG. 3 is a schematic cross-sectional view of a first heat transfer plate provided by embodiments of the present disclosure;

FIG. 4 is a cross-sectional view of a first heat transfer plate according to an embodiment of the present disclosure in a state of being filled with a heat transfer medium;

fig. 5 is a schematic view of an internal structure of an outdoor unit of an air conditioner according to an embodiment of the present disclosure;

fig. 6 is a schematic partial exploded view of an outdoor unit of an air conditioner according to an embodiment of the present disclosure;

fig. 7 is an exploded view of an electrically controlled component and an upper base provided in accordance with an embodiment of the present disclosure.

Reference numerals:

11. a first heat transfer plate; 110. a first evaporation section; 111. a first condensing section; 12. a second heat transfer plate; 120. a second evaporation section; 121. a second condensation section; 20. a micro-groove heat pipe; 21. a vacuum chamber; 22. a capillary structure; 30. a heat dissipating fin; 40. a base; 401. an upper base; 402. a lower base; 41. an electrical control element; 410. a circuit board; 420. a frequency conversion chip; 50. a fan bracket; 60. an electronic control box; 70. an axial flow fan.

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 cases, well-known structures and heat sinks may be shown for simplicity.

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 embodiments thereof, and are not intended to limit the indicated heat sinks, 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; either directly or indirectly through an intermediary, or internally between two heat sinks, 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.

As shown in connection with fig. 1-4, embodiments of the present disclosure provide a heat sink comprising a first heat transfer plate 11 and a second heat transfer plate 12; the first heat transfer plate 11 comprises a first evaporation section 110 and a first condensation section 111 which are connected, and the first condensation section 111 is bent relative to the first evaporation section 110; the second heat transfer plate 12 comprises a second evaporation section 120 and a second condensation section 121 which are connected, and the second condensation section 121 is bent relative to the second evaporation section 120; wherein the first evaporation stage 110 and the second evaporation stage 120 are arranged side by side, and the first condensation stage 111 and the second condensation stage 121 extend away from each other.

By the embodiment, the radiator conducts heat transfer by arranging the first heat transfer plate 11 and the second heat transfer plate 12, wherein the first evaporation section 110 of the first heat transfer plate 11 and the second evaporation section 120 of the second heat transfer plate 12 are arranged side by side, so that heat absorption can be conducted on the heating element together, and the heat exchange area between the radiator and the heating element is increased; the first condensation section 111 of the first heat transfer plate 11 and the second condensation section 121 of the second heat transfer plate 12 extend away from each other, and condensation heat dissipation can be performed in different area spaces. Like this, can promote the radiating efficiency of radiator to promote the radiating effect to the great heating element of heat flux density, can realize the quick heat dissipation to the great heating element of heat flux density.

The first heat transfer plate 11 and the second heat transfer plate 12 both include an evaporation section and a condensation section, which indicates that the first heat transfer plate 11 and the second heat transfer plate 12 both realize a heat transfer process by utilizing phase change and flow of a heat transfer working medium. The heat transfer working medium can flow, the heat absorbed by the heat transfer working medium can be evaporated to be in a gaseous state, and the heat released by the gaseous heat transfer working medium can be condensed to be in a liquid state. The phase change of the heat transfer working medium can generate a tiny pressure difference to promote the heat transfer working medium to flow. Optionally, the heat transfer medium is a refrigerant. Heat transfer may be performed by a refrigerant.

The first heat transfer plate 11 and the second heat transfer plate 12 are both plate-shaped, and the arrangement of the two plates side by side means that one side edge of the first heat transfer plate 11 is adjacent to one side edge of the second heat transfer plate 12, and the plate surfaces of the first heat transfer plate 11 and the second heat transfer plate 12 are located on the same plane. For example, the first heat transfer plate 11 is disposed horizontally, and the second heat transfer plate 12 is also disposed horizontally, and is adjacent to the first heat transfer plate 11 in the horizontal direction. Thus, when the first heat transfer plate 11 and the second heat transfer plate 12 are arranged side by side, the first evaporation section 110 and the second evaporation section 120 are located on the same plane, and in the plane, the heat exchange area of the radiator to the heating element is increased, and the heat radiation effect to the heating element is improved.

The first condensation section 111 of the first heat transfer plate 11 and the second condensation section 121 of the second heat transfer plate 12 extend away from each other, and the first condensation section 111 and the second condensation section 121 can dissipate heat in different space regions, so that mutual interference of heat released by the first condensation section 111 and the second condensation section 121 is avoided, and the heat dissipation effect is reduced. In practical applications, as shown in fig. 5, if the heat sink is disposed in an outdoor unit of an air conditioner, the first condensation section 111 of the first heat transfer plate 11 can be located on an airflow path of the axial flow fan 70 of the outdoor unit of the air conditioner, so that the airflow generated by the axial flow fan 70 dissipates heat of the first condensation section 111, and the heat dissipation effect of the first condensation section 111 can be greatly improved. Alternatively, the first condensation section 111 is located on the upper side of the axial fan 70 where the airflow disturbance is strong. Therefore, the airflow around the first condensation section 111 is smooth, the heat of the first condensation section 111 can be quickly dissipated to the surrounding environment, and the heat is blown to the outside by the axial fan 70 to perform air cooling enhanced heat exchange. And, the second condensation section 121 of the second heat transfer plate 12 extends away from the first condensation section 111, and can extend to another space region for heat dissipation, for example, to the upper side of the pressing cabin with low ring temperature. The compressor bin is a bin for placing a compressor, and airflow is smooth, so that heat can be quickly dissipated to the surrounding environment.

As shown in fig. 2, optionally, the first condensation section 111 is bent relative to the first evaporation section 110, an included angle between the bent first condensation section 111 and the first evaporation section 110 is 90 °, the second condensation section 121 is bent relative to the second evaporation section 120, an included angle between the bent second condensation section 121 and the second evaporation section 120 is 90 °, the first evaporation section 110 and the second evaporation section 120 are arranged in parallel, and the second condensation section 121 extends back to the first condensation section 111 and forms an included angle of 180 ° with the first condensation section 111. In this way, it is advantageous to keep the first condensation section 111 and the second condensation section 121 as far apart as possible. In the outdoor unit of the air conditioner, it is convenient for the first condensation section 111 to extend to the airflow path of the axial flow fan 70, and it is also convenient for the second condensation section 121 to extend to the upper side of the compressor housing.

Optionally, a circulation pipeline for circulating the heat transfer medium is arranged inside each of the first heat transfer plate 11 and the second heat transfer plate 12. In this way, heat transfer is achieved by the circulating flow of the heat transfer medium in the first heat transfer plate 11 and in the second heat transfer plate 12.

In some embodiments, the first evaporation stage 110 is in contact with the second evaporation stage 120. The first evaporation section 110 can contact with the second evaporation section 120 to form a larger heat absorption area, so that the heating element with higher heat flux density can be subjected to uniform temperature heat dissipation, and the local heating element is prevented from having too high temperature. The uniform temperature heat dissipation means that the temperature of each area of the heating element is kept the same or similar in the descending stage. In some embodiments, there is a gap between the first evaporation section 110 and the second evaporation section 120. In this way, heat can be radiated also to the heat generating element having a large heat flux density.

As shown in fig. 5, 6 or 7, optionally, the heating element is a frequency conversion chip 420. The heat generated by the frequency conversion chip 420 is transferred to the first heat transfer plate 11 and the second heat transfer plate 12, the heat transfer working medium inside the first evaporation section 110 and the second evaporation section 120 is vaporized, and the gaseous heat transfer working medium rapidly brings the heat generated by the frequency conversion chip 420 to the first condensation section 111 and the second condensation section 121. Alternatively, the first condensation section 111 is located on the upper side of the axial fan 70 where the airflow disturbance is strong. Therefore, the airflow around the first condensation section 111 is smooth, the heat of the first condensation section 111 can be quickly dissipated to the surrounding environment, and the heat is blown to the outside by the axial fan 70 to perform air cooling enhanced heat exchange. Meanwhile, the vaporized heat transfer working medium is condensed, liquefied and refluxed to the first evaporation section 110.

As shown in connection with fig. 2, in some embodiments, the first condensation section 111 and the second condensation section 121 are at the same height and higher than the first evaporation section 110 and the second evaporation section 120. That is, the first condensation section 111 and the second condensation section 121 have a height higher than the first evaporation section 110 and higher than the second evaporation section 120. Therefore, the height difference exists between the condensation section and the evaporation section, and the height difference is favorable for the circulation flow of the heat transfer working medium. The heat is transferred from bottom to top, and the heat transfer working medium absorbs heat in the first evaporation section 110 and the second evaporation section 120 and turns into a gas state, and then tends to flow upwards and can flow to the first condensation section 111 and the second condensation section 121; after the heat transfer working medium is condensed into a liquid state in the first condensation section 111 and the second condensation section 121, the heat transfer working medium can flow to the first evaporation section 110 and the second evaporation section 120 which are positioned at lower positions under the action of gravity. The evaporation section and the condensation section form pressure difference and temperature difference to ensure that high-temperature steam continuously flows to the condensation section, and meanwhile, the heat transfer working medium liquefied in the condensation section flows back to the evaporation section through the lower side of the pipeline by means of self gravity, so that a heat circulation loop is formed. The provision of such a height difference between the evaporation section and the condensation section promotes the circulation of the heat transfer medium in the first heat transfer plate 11 and in the second heat transfer plate 12.

Optionally, the first evaporation stage 110 and the second evaporation stage 120 are the same height. The first evaporation section 110 and the second evaporation section 120 have the same height, which is convenient for the first evaporation section 110 and the second evaporation section 120 to perform uniform temperature heat dissipation on the heating element.

In some embodiments, as shown in fig. 2, the connection between the first evaporation stage 110 and the first condensation stage 111, and the connection between the second evaporation stage 120 and the second condensation stage 121 are in a rotating bend shape. The bending is to enable the first condensation section 111 and the second condensation section 121 to extend away from each other to other positions. The rotation is to connect the first evaporation section 110 and the first condensation section 111 at different heights, and to connect the second evaporation section 120 and the second condensation section 121 at different heights. The rotary bending type connection of the evaporation section and the condensation section is adopted, so that the evaporation section and the condensation section with height difference are prevented from being sharply twisted or bent when being connected, and heat transfer working media can smoothly and stably flow between the evaporation section and the condensation section.

As shown in fig. 2, in some embodiments, the heat sink further includes heat dissipation fins 30, and the heat dissipation fins 30 are disposed in the first condensation section 111 and/or the second condensation section 121. The heat dissipation fins 30 extend outward from the condensation section, increasing the contact area with the air and accelerating the heat release. Optionally, heat dissipating fins 30 extend downwardly from the condenser section. Thus, heat is released to the lower side of the condensation section through the heat radiating fins 30. Optionally, the first condensation section 111 is located on the airflow path of the axial fan 70. Thus, the airflow generated by the rotation of the cross flow fan passes through the first condensation section 111 and the heat dissipation fins 30, and the heat dissipation of the heat sink is accelerated. Alternatively, the first condensation section 111 is located at an upper side of the airflow path of the axial flow fan 70, and the heat dissipation fins 30 extend downward from the first condensation section 111. In this way, the airflow can be made to pass through the heat dissipating fins 30 as much as possible without affecting the air blowing by the axial flow fan 70, and the heat dissipation of the heat dissipating fins 30 can be accelerated.

In some embodiments, the heat dissipating fins 30 are folded multiple times. The heat dissipation fins 30 are folded for multiple times, so that the contact area between the heat dissipation fins 30 and the air can be increased as much as possible, and the heat dissipation effect is improved. Alternatively, the heat dissipating fins 30 are folded to form a folding angle of 90 °. The folding included angle of 90 degrees indicates that the heat dissipation fins 30 are vertically folded, so that the length of the heat dissipation fins 30 extending in the space can be prolonged in the limited area of the condensation section, the contact area of the heat dissipation fins 30 and the air is further increased, and the heat dissipation effect is improved. Alternatively, the heat dissipation fins 30 are fixed to the lower side of the condensation section by means of adhesion or welding. In this way, the connection of the heat radiating fins 30 with the condensing section is achieved. Alternatively, the heat dissipating fins 30 are continuous in a zigzag shape. Thus, the heat dissipation fins 30 can increase the contact area with the air, and improve the heat dissipation effect.

In some embodiments, as shown in fig. 2, 3 or 4, a micro-groove heat pipe 20 is disposed in the first heat transfer plate 11 for circulating the heat transfer medium, and the micro-groove heat pipe 20 extends from one end of the first heat transfer plate 11 to the other end.

The micro-groove heat pipe 20 extends from one end of the first heat transfer plate 11 to the other end, and the heat transfer working medium circulates in the micro-groove heat pipe 20 and also flows from one end of the first heat transfer plate 11 to the other end. The first heat transfer plate 11 has one end located at the evaporation section to absorb heat generated from the heating element and the other end located at the condensation section to release heat. Thus, the first heat transfer plate 11 can absorb heat from the heat generating element and transfer the heat to the condensation section for release. That is, the heat transfer medium absorbs heat from the evaporation section of the first heat transfer plate 11 to become gaseous, and then flows along the micro-groove heat pipe 20 to the condensation section of the first heat transfer plate 11 to release heat to become liquid. The heat transfer medium which has become liquid can flow back to the evaporation section of the first heat transfer plate 11.

The heat transfer is carried out by adopting the micro-groove heat pipe 20, and in macroscopic view, the heat transfer working medium only flows between two ends of the micro-groove heat pipe 20 to carry out heat transfer, and the micro-groove heat pipe 20 forms closed heat circulation inside.

Optionally, a micro-groove heat pipe 20 for circulating the heat transfer medium is arranged in the first heat transfer plate 11, the micro-groove heat pipe 20 extends from one end of the first heat transfer plate 11 to the other end, a micro-groove heat pipe 20 for circulating the heat transfer medium is arranged in the second heat transfer plate 12, and the micro-groove heat pipe 20 extends from one end of the second heat transfer plate 12 to the other end. The first and second heat transfer plates 12 both transfer heat through the micro-groove heat pipe 20, which can effectively improve the heat dissipation efficiency of the heating element.

As shown in connection with fig. 3 and 4, in some embodiments, the microchannel heat pipe 20 includes a vacuum cavity 21 and a capillary structure 22; wherein, the vacuum cavity 21 is used for the circulation of heat transfer working medium; the capillary structure 22 is provided at an upper portion and/or a lower portion within the vacuum chamber 21.

The heat transfer working medium flows in the vacuum cavity 21 for heat transfer, and the capillary structure 22 is utilized to promote the heat transfer working medium to circularly flow, so that closed circulation is realized. The structure of the micro-groove heat pipe 20 can realize closed circulation of the heat transfer working medium in the micro-groove heat pipe. The heat conductivity of the micro-groove heat pipe 20 is larger than 15000W/m.k, and the micro-groove heat pipe has the characteristics of high heat transfer capacity, high heat conductivity and light weight.

The vacuum cavity 21 is filled with heat transfer working medium and vacuum, the heat transfer working medium is heated and evaporated in the vacuum cavity 21 filled with vacuum, and latent heat of vaporization promotes heat transfer. The heat transfer working medium steam rises to contact the capillary structure 22 at the upper part of the vacuum cavity 21 and flows back to the condensation end along the capillary structure 22, and can be more quickly condensed into a liquid state after releasing heat of the heat transfer working medium. The liquid heat transfer working medium can flow to the evaporation end along the capillary structure 22 at the lower part of the vacuum cavity 21 by the liquid gravity to complete the circulation. The capillary structure 22 in the micro-groove heat pipe 20 can block the internal liquid and gaseous heat transfer working media from fast flowing back under the action of self gravity, and the capillary structure is favorable for the adhesion contact between the liquid and gaseous heat transfer working media and the pipe wall, namely the capillary structure increases the resistance of the heat transfer working media flowing under the action of gravity, and is favorable for the heat conduction and the temperature uniformity improvement of the micro-groove heat pipe.

In some embodiments, the number of the micro-groove heat pipes 20 is multiple and arranged side by side. The plurality of micro-groove heat pipes 20 are arranged, so that the heat dissipation efficiency can be further improved. The plurality of micro-groove heat pipes 20 are arranged side by side, and circularly flow in each micro-groove heat pipe 20 through the phase change of the heat transfer working medium, so that a better uniform temperature heat transfer effect is achieved for a concentrated heat source, the local overheating phenomenon can be eliminated to the maximum extent, and the heat dissipation efficiency is improved. In practical applications, the first evaporation section 110 and the second evaporation section 120 are close to or in contact with the heating element, and the plurality of micro-groove heat pipes 20 can absorb heat of the heating element more uniformly, thereby avoiding local overheating of the heating element and improving heat dissipation efficiency. For the heating element with higher heat flux density, the heat transfer plate is internally provided with a plurality of parallel microgroove heat pipes 20, so that the heat transfer plate has better uniform temperature heat transfer effect on a concentrated heat source, can eliminate the local overheating phenomenon to the maximum extent, and improves the heat dissipation efficiency.

The embodiment of the disclosure also provides an outdoor unit of an air conditioner, which comprises the radiator provided by any one of the embodiments. The air conditioner outdoor unit can quickly radiate heat of the heating element with high heat flux density through the radiator, and avoids faults caused by poor heat radiation of the air conditioner outdoor unit.

As shown in fig. 5, 6 or 7, in some embodiments, the outdoor unit of the air conditioner further includes a base 40 and an electric control element 41, wherein the base 40 is detachably disposed on the first evaporation section 110 and the second evaporation section 120; the electric control element 41 is disposed on the base 40.

The base 40 is removable to facilitate mounting and removal on the heat sink. The base 40 is detachably disposed at the first evaporation stage 110 and the second evaporation stage 120, and the first evaporation stage 110 and the second evaporation stage 120 can absorb heat of the base 40. The electric control element 41 is disposed on the base 40, and heat is first transferred to the base 40 when the electric control element 41 generates heat. The electrical control element 41 may be removably connected to the base 40. When the heat sink is applied to an outdoor unit of an air conditioner, the electric control unit 41 may be fixed to the base 40, and then the base 40 may be connected to the first evaporation section 110 and the second evaporation section 120.

The electric control element 41 has high heat flow density and concentrated heat source, and needs to perform efficient heat dissipation. The electric control element 41 is disposed on the base 40, and heat is transferred to the base 40 when the electric control element 41 generates heat, and the heat is transferred to the heat sink through the base 40. By providing the base 40, the fixing between the electric control element 41 and the heat sink is achieved, and the heat generated by the electric control element 41 is collected.

Optionally, the electronic control element 41 includes a circuit board 410 and a frequency conversion chip 420 on the circuit board 410. The inverter chip 420 is an important component in the inverter air conditioner, and determines the operating frequency of the compressor. The frequency conversion chip 420 mainly includes: IPM, IGBT, diode, rectifier bridge, etc. The frequency conversion chip 420 has high heat flux density and concentrated heat source. The inverter chip 420 may be fixed to the base 40 so that heat of the inverter chip 420 can be transferred to the base 40 and the heat of the base 40 can be absorbed by the heat sink.

As shown in fig. 5, 6 or 7, in some embodiments, the base 40 includes a lower base 402 and an upper base 401, the lower base 402 is provided with a slot for the first evaporation section 110 and the second evaporation section 120 to be inserted into; the upper base 401 is detachably connected with the lower base 402; the electric control element 41 is disposed on the upper base 401.

The upper base 401 is in close contact with the frequency conversion chip 420 for heat transfer, the first evaporation section 110 and the second evaporation section 120 are clamped in the clamping groove of the lower base 402, and the heat transfer plate is clamped and fixed by the upper base 402 and the lower base 402. Optionally, the lower base 402 is provided with two slots arranged side by side for the first evaporation section 110 and the second evaporation section 120 to be inserted into. The first evaporation section 110 and the second evaporation section 120 may extend into the card slot from the side of the lower base 402, so as to be fixed with the lower base 402.

Optionally, the upper base 401 and the frequency conversion chip 420 are fixed by bolts. In this way, the connection of the frequency conversion chip 420 and the upper base 401 is realized. Optionally, the thickness of the upper base 401 is greater than or equal to 8 mm. Thus, the bolt can be prevented from breaking through the upper base 401 and contacting with the first evaporation section 110 or the second evaporation section 120, the effective depth of screw fixation is increased, and the reliability of fixation is improved. Lower base 402 and upper base 401 are closely laminated fixedly, and upper and lower base 402 plays the fixed and heat accumulation radiating effect of centre gripping, can ensure that the quick heat accumulation radiating effect before the start of phase transition heat transfer of microgroove heat pipe 20 when frequency conversion chip 420 begins to work, can also satisfy frequency conversion chip 420's partial heat dissipation demand when the trouble such as heat transfer working medium leakage appears in the radiator can not in time dispel the heat simultaneously, prevents that frequency conversion chip 420 from being burnt out.

Optionally, the outdoor unit of the air conditioner further includes a fan bracket 50, and the first condensing section 111 of the heat sink is fixed to the fan bracket 50. Thus, the first condensation section 111 of the radiator is fixed, and the radiator is prevented from deforming. Besides, the airflow near the first condensation section 111 circulates smoothly, the heat of the first condensation section 111 can be dissipated to the surrounding environment quickly, and the heat is blown to the outside by the axial fan 70 to perform air cooling enhanced heat exchange.

Optionally, the outdoor unit of the air conditioner further includes a press cabin, and the second condensing section 121 of the heat sink is fixed to a sidewall of the press cabin. Thus, the second condensation section 121 of the radiator can be fixed, and the radiator can be prevented from being deformed. And, the circulation of the air current near the press storehouse is smooth, is favorable to dissipating the heat to the surrounding environment fast.

Optionally, the outdoor unit of the air conditioner further includes an electrical control box 60, an opening is formed in a bottom of the electrical control box 60, the first evaporation section 110 and the second evaporation section 120 are exposed from the opening, the upper base 401 and the electrical control element 41 are located inside the electrical control box 60, the lower base 402 is located outside the electrical control box 60, and the upper base 401 and the lower base 402 clamp and fix the heat transfer plate. In this way, heat dissipation of the electric control element 41 is achieved, and the first evaporation section 110, the second evaporation section 120 and the base 40 are fixed.

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 first heat transfer plate comprises a first evaporation section and a first condensation section which are connected, and the first condensation section is bent relative to the first evaporation section;

the second heat transfer plate comprises a second evaporation section and a second condensation section which are connected, and the second condensation section is bent relative to the second evaporation section;

wherein the first evaporation section and the second evaporation section are arranged side by side, and the first condensation section and the second condensation section extend away from each other.

2. The heat sink of claim 1, wherein the first evaporation section is in contact with the second evaporation section.

3. The heat sink as recited in claim 1, wherein the first condensation section and the second condensation section have the same height and are higher than the first evaporation section and the second evaporation section.

4. The heat sink according to claim 3, wherein a junction between the first evaporation section and the first condensation section, and a junction between the second evaporation section and the second condensation section are rotationally bent.

5. The heat sink of claim 1, further comprising:

and the heat radiating fins are arranged on the first condensation section and/or the second condensation section.

6. The heat sink as claimed in claim 5, wherein the heat dissipating fins are folded in a plurality of times.

7. The heat sink according to any one of claims 1 to 6, wherein a micro-groove heat pipe for circulating a heat transfer medium is provided in the first heat transfer plate, and the micro-groove heat pipe extends from one end of the first heat transfer plate to the other end.

8. The heat sink of claim 7, wherein the micro-grooved heat pipe comprises:

the vacuum cavity is used for the circulation of the heat transfer medium;

and the capillary structure is arranged at the upper part and/or the lower part in the vacuum cavity.

9. An outdoor unit of an air conditioner, comprising the heat sink of any one of claims 1 to 8.

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

the base is detachably arranged on the first evaporation section and the second evaporation section;

and the electric control element is arranged on the base.

Images