Radiator, outdoor unit and air conditioner

Abstract

The utility model relates to a radiator, an outdoor unit and an air conditioner. The radiator comprises a base and a radiating pipe, the base is provided with a concave part, the radiating pipe is installed in the concave part, a phase-changeable radiating medium is arranged in the radiating pipe, the radiating pipe is provided with a volatilization end and a condensation end which are oppositely arranged, and the volatilization end is located below an electrical element. According to the technical scheme, the radiator can meet the heat dissipation requirement of the electrical element under the severe working condition or the extreme condition, the performance of the electrical element is guaranteed, and the service life of the electrical element is prolonged.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of air conditioners, and in particular to a radiator, an outdoor unit and an air conditioner. BACKGROUND

[0002] In the related art, in order to ensure the performance and reliability of the electrical control device of the air conditioner, a radiator is often used to dissipate heat for the electrical control box. However, the radiator cannot meet the heat dissipation requirements of the electrical elements of the electrical control box under harsh working conditions or extreme conditions, resulting in a decrease in the performance of the electrical control box or a reduction in the service life of the electrical elements. SUMMARY

[0003] To overcome the problems in the related art, the present disclosure provides a radiator, an outdoor unit and an air conditioner, which can meet the heat dissipation requirements of electrical elements under harsh working conditions or extreme conditions, ensure the performance of the electrical elements and improve the service life of the electrical elements.

[0004] To achieve the above-mentioned purpose, according to a first aspect of the present disclosure, a radiator is provided, comprising a base and a heat dissipation pipe, the base is provided with a recess, the heat dissipation pipe is installed in the recess, the heat dissipation pipe is provided with a phase-changeable heat dissipation medium, and has a relatively arranged volatilization end and condensation end, the volatilization end is located below the electrical element.

[0005] Optionally, the volatilization end is arranged in close contact with the electrical element.

[0006] Optionally, the base has a side surface, the recess extends to the side surface and forms a notch on the side surface, the condensation end is arranged in the notch and flush with the side surface.

[0007] Optionally, the recess has an end surface and the notch arranged oppositely, and the volatilization end abuts against the end surface.

[0008] Optionally, the recess is configured as an arc-shaped groove, and the heat dissipation pipe has an arc-shaped matching part to be in close contact with the arc-shaped groove in shape.

[0009] Optionally, the cross section of the arc-shaped groove is configured as a circular arc, and the central angle corresponding to the circular arc is greater than or equal to 180 degrees.

[0010] Optionally, the cross section of the heat dissipation pipe is a D-shaped pipe, and has a top wall surface connected with the arc-shaped matching part, the base has a top surface, and the top wall surface and the top surface are flush.

[0011] Optionally, the number of the heat dissipation pipes is at least two, and the at least two heat dissipation pipes are arranged in sequence along the length direction of the base.

[0012] Optionally, a capillary core is arranged in the heat dissipation pipe, and the capillary core is located between the condensation end and the evaporation end.

[0013] Optionally, the heat dissipation pipe has an inner wall surface, and the capillary core is arranged on the inner wall surface.

[0014] According to a second aspect of the present disclosure, an outdoor unit is provided, comprising an electric control box and the heat sink described above, and the evaporation end is attached to electrical elements of the electric control box.

[0015] According to a third aspect of the present disclosure, an air conditioner is provided, comprising the outdoor unit described above.

[0016] According to the technical solution described above, in the heat sink provided by the present disclosure, the liquid heat dissipation medium at the evaporation end can absorb the heat of the electrical elements to undergo phase change (e.g., vaporization), wherein, since the volume of the heat dissipation medium after phase change is larger than the volume of the heat dissipation medium before phase change, that is, the pressure at the evaporation end is greater than the pressure at the condensation end at this time, therefore, the heat dissipation medium after phase change can move from the evaporation end towards the condensation end, and release heat at the condensation end to undergo phase change (e.g., liquefaction). In summary, the heat sink can absorb the heat of the electrical elements through the heat dissipation medium in the heat dissipation pipe, to assist in dissipating the heat of the electrical elements, so that the heat dissipation requirements of the electrical elements under harsh or extreme conditions can be met, the performance of the electrical elements can be ensured, and the service life of the electrical elements can be improved.

[0017] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the present disclosure and, together with the specification, serve to explain the principles of the present disclosure:

[0019] Figure 1 is a perspective view of the heat sink provided by the embodiments of the present disclosure;

[0020] Figure 2 is a top view of the heat sink provided by the embodiments of the present disclosure;

[0021] Figure 3 is a front view of the heat sink provided by the embodiments of the present disclosure, wherein the heat dissipation pipe is not shown;

[0022] Figure 4 is Figure 3 is an enlarged view of A in

[0023] Figure 5 is a front view of the heat sink provided by the embodiments of the present disclosure;

[0024] Figure 6 isFigure 5 is an enlarged view of B in FIG. 1;

[0025] Figure 7 is a perspective view of the heat sink provided by the embodiments of the present disclosure, wherein the heat pipe is not shown;

[0026] Figure 8 is a longitudinal sectional view of the heat pipe provided by the embodiments of the present disclosure;

[0027] Figure 9 is a transverse sectional view of the heat pipe provided by the embodiments of the present disclosure.

[0028] Legend of Reference Signs

[0029] 1, base; 11, recess; 111, arc-shaped groove; 112, stop; 1121, chamfer; 12, side surface; 121, notch; 13, end surface; 14, top surface; 2, heat pipe; 21, evaporation end; 22, condensation end; 23, arc-shaped matching part; 24, top wall surface; 25, capillary core; 3, electrical element; 4, fin. DETAILED DESCRIPTION

[0030] The exemplary embodiments will be described in detail herein with reference to the accompanying drawings. In the following description, the same numbers refer to the same elements or similar elements throughout the drawings, unless otherwise represented. The embodiments described in the following exemplary embodiments do not represent all the embodiments consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0031] In the present disclosure, unless otherwise stated, the orientation words such as "top, bottom" used in the present disclosure refer to the orientation of the heat sink in the Figure 1 , Figure 3 , Figure 5 and Figure 7 corresponding to "upper, lower", "inner, outer" with respect to the outline of the corresponding components. In addition, in the following description, when referring to the drawings, the same reference signs in different drawings represent the same or similar elements, unless otherwise explained. The above definitions are only used to explain and illustrate the present disclosure, and should not be understood as limiting the present disclosure.

[0032] According to a first aspect of the present disclosure, with reference to Figure 1 , Figure 2 and Figure 8 shown, a heat sink is provided, comprising a base 1 and a heat pipe 2, the base 1 is provided with a recess 11, the heat pipe 2 is installed in the recess 11, the heat pipe 2 is provided with a changeable heat dissipation medium, and has oppositely arranged evaporation end 21 and condensation end 22, the evaporation end 21 is located below the electrical element 3.

[0033] Through the technical scheme, in the heat sink provided by the present disclosure, the liquid heat dissipation medium at the evaporation end 21 can absorb the heat of the electrical element 3 to change phase (e.g., vaporization), wherein, since the volume of the heat dissipation medium after phase change is larger than that before phase change, that is, the pressure at the evaporation end 21 is greater than that at the condensation end 22 at this time, therefore, the heat dissipation medium after phase change can move from the evaporation end 21 to the condensation end 22, and release heat at the condensation end 22 to change phase (e.g., liquefaction). In summary, the heat sink can absorb the heat of the electrical element 3 through the heat dissipation medium in the heat dissipation pipe 2 to assist in dissipating heat of the electrical element 3, so that the heat dissipation requirement of the electrical element 3 under harsh or extreme conditions can be met, the performance of the electrical element 3 is ensured, and the service life of the electrical element 3 is improved.

[0034] In addition, the evaporation end 21 can be arranged at the end of the axial direction of the heat dissipation pipe 2, that is, the evaporation end 21 is located at the position farthest from the condensation end 22 on the heat dissipation pipe 2, thereby ensuring the distance between the evaporation end 21 and the condensation end 22 to ensure that there is a temperature difference between the evaporation end 21 and the condensation end 22, and further ensure that the condensation end 22 can absorb the heat of the heat dissipation medium to change phase (e.g., liquefaction) of the heat dissipation medium.

[0035] In the heat sink provided by the present disclosure, as an exemplary embodiment, the evaporation end 21 can be arranged in close contact with the electrical element 3. In this way, it is beneficial for the evaporation end 21 to absorb the heat of the electrical element 3, and to ensure the heat dissipation effect of the heat dissipation pipe 2 on the electrical element 3.

[0036] In the heat sink provided by the present disclosure, the condensation end 22 can be arranged at any suitable position, as an exemplary embodiment, as shown in Figure 1 Figure 2 and Figure 7 , the base 1 can have a side surface 12, the recess 11 can extend to the side surface 12 and form a gap 121 on the side surface 12, and the condensation end 22 can be arranged in the gap 121 and flush with the side surface 12. That is, the condensation end 22 of the heat dissipation pipe 2 can penetrate through the base 1 to make the length of the heat dissipation pipe 2 as long as possible, so that the distance between the condensation end 22 and the evaporation end 21 is as large as possible, thereby making the temperature difference between the condensation end 22 and the evaporation end 21 as large as possible, and ensuring the heat absorption effect of the condensation end 22 on the heat dissipation medium, so that the heat dissipation medium can change phase (e.g., liquefaction) at the condensation end 22.

[0037] ​Wherein, as an exemplary embodiment, the heat dissipation pipe 2 can extend along the length direction, diagonal direction or any other suitable direction of the base 1, and the present disclosure does not make specific limitation thereto. As another exemplary embodiment, the heat dissipation device can be a fin type heat dissipation device, and the fins 4 of the heat dissipation device can be cooled by a heat dissipation fan, so that the condensing end 22 can be arranged on the base 1 at a position where the air flow is large. Since the heat dissipation effect of the fins 4 at the position where the air flow is large is better than that of the fins 4 at the position where the air flow is small, the above arrangement of the condensing end 22 ensures the heat absorption effect of the condensing end 22 on the heat dissipation medium. Wherein, the base 1 can have a first side and a second side arranged oppositely, the first side can be arranged with the fins 4, and the second side can be arranged with the heat dissipation pipe 2.

[0038] In the heat dissipation device provided by the present disclosure, the recess 11 can be configured in any suitable manner. As an exemplary embodiment, as shown in Figure 1 、 Figure 2 and Figure 7 , the recess 11 can have an end face 13 and a notch 121 arranged oppositely, and the volatilization end 21 can abut against the end face 13. In this way, the end face 13 can position the heat dissipation pipe 2 by limiting the position of the volatilization end 21, thereby facilitating the installation of the heat dissipation pipe 2.

[0039] In addition, as shown in Figure 1 and Figures 3 to 7 , the recess 11 can be configured as an arc-shaped groove 111, and the heat dissipation pipe 2 can have an arc-shaped matching portion 23 to fit the shape of the arc-shaped groove 111. In this way, the heat dissipation pipe 2 can be ensured to be in sufficient contact with the base 1 to realize heat exchange between the heat dissipation pipe 2 and the base 1, thereby transferring the heat absorbed by the condensing end 22 to the base 1 and dissipating the heat through the fins 4. Wherein, the heat dissipation pipe 2 can be configured as a metal pipe, such as a copper pipe. Considering that the processing technology of a circular copper pipe is relatively mature, the arc-shaped matching portion 23 of the heat dissipation pipe 2 can facilitate the processing and manufacturing of the heat dissipation pipe 2.

[0040] In the heat dissipation device provided by the present disclosure, the arc-shaped groove 111 can be configured in any suitable manner. As an exemplary embodiment, as shown in Figures 3 to 4As shown, the cross-section of the arc-shaped groove 111 can be constructed as an arc, and the central angle corresponding to the arc can be greater than or equal to 180 degrees. That is, the width of the top opening of the arc-shaped groove 111 is less than or equal to the diameter of the arc-shaped groove 111. In this way, when the width of the top opening of the arc-shaped groove 111 is less than the diameter of the arc-shaped groove 111, a stop portion 112 can be formed at both ends of the arc-shaped groove 111 to restrict the heat sink 2 from coming out of the recess 11. The stop portion 112 can have a chamfer 1121 to avoid accidentally scratching the heat sink 2 during the installation of the heat sink 2; when the width of the top opening of the arc-shaped groove 111 is equal to the diameter of the arc-shaped groove 111, it is beneficial to install the heat sink 2 into the arc-shaped groove 111.

[0041] Furthermore, in this embodiment, the heat sink 2 and the recess 11 can be interference-fitted. This not only ensures the reliability of the connection between the heat sink 2 and the recess 11, but also eliminates the need for a connection structure between the heat sink 2 and the recess 11, thereby simplifying the manufacturing process and saving costs. In other embodiments, the heat sink 2 and the recess 11 can also be connected by other suitable methods, such as bonding, etc., and this disclosure does not impose specific limitations on this.

[0042] In the heat sink provided in this disclosure, the heat pipe 2 can be constructed in any suitable manner. As an exemplary embodiment, refer to... Figure 1 , Figure 5 and Figure 6 As shown, the heat dissipation pipe 2 can have a D-shaped cross-section and a top wall surface 24 connected to the arc-shaped fitting part 23. The base 1 can have a top surface 14, and the top wall surface 24 can be flush with the top surface 14. In this way, the heat dissipation pipe 2 and the base 1 can be simultaneously attached to the device to be cooled, so as to ensure the heat exchange area between the radiator and the device to be cooled, thereby ensuring the heat dissipation effect of the radiator on the device to be cooled. The heat dissipation pipe 2 can be installed on the base 1 in any suitable manner. As an exemplary embodiment, the heat dissipation pipe 2 can be pressed down into the arc-shaped groove 111 through the top opening of the arc-shaped groove 111 by a press-fitting structure. In this way, it can be ensured that after installation, the top wall surface 24 of the heat dissipation pipe 2 is flush with the top surface 14 of the base 1.

[0043] In the heat sink provided in this disclosure, as an exemplary embodiment, reference is made to... Figures 1 to 2 As shown, the number of heat dissipation pipes 2 can be at least two, and the at least two heat dissipation pipes 2 can be arranged sequentially along the length direction of the base 1. Each heat dissipation pipe 2 can be used to dissipate heat for a corresponding electrical component 3, so that each electrical component 3 can be cooled by its corresponding heat dissipation pipe 2, thus meeting the heat dissipation requirements of each electrical component 3 under harsh or extreme conditions. In other embodiments, other suitable numbers of heat dissipation pipes 2 can be selected, and this disclosure does not impose specific limitations on this.

[0044] In the heat sink provided by the present disclosure, as an exemplary embodiment, refer to Figure 8 and Figure 9 As shown, a capillary core 25 can be arranged in the heat dissipation pipe 2, and the capillary core 25 can be located between the condensation end 22 and the evaporation end 21. The capillary core 25 can have capillary channels to facilitate the capillary phenomenon in the capillary channels to transport the liquid heat dissipation medium from the condensation end 22 to the evaporation end 21. In addition, the capillary phenomenon of the capillary core 25 is well known to those skilled in the art, and the present disclosure will not be repeated here.

[0045] In the present disclosure, the liquid heat dissipation medium absorbs heat at the evaporation end 21 to convert into gaseous heat dissipation medium, then the gaseous heat dissipation medium flows from the evaporation end 21 to the condensation end 22 and releases heat at the condensation end 22 to convert into liquid heat dissipation medium, and then the liquid heat dissipation medium flows back to the evaporation end 21 through the capillary core 25 for the next heat absorption and vaporization, thereby realizing the circulation of the heat dissipation medium in the heat dissipation pipe 2 to continuously dissipate heat from the electrical element 3 by the heat dissipation medium.

[0046] In the heat sink provided by the present disclosure, the capillary core 25 can be arranged at any suitable position, as an exemplary embodiment, refer to Figure 9 As shown, the heat dissipation pipe 2 can have an inner wall surface, and the capillary core 25 can be arranged around the inner wall surface. That is, the inner wall surface of the heat dissipation pipe 2 is provided with the capillary core 25 around the entire circumference, so that not only the uniform guidance of the liquid heat dissipation medium by the capillary core 25 can be realized, but also as many capillary channels as possible can be arranged in the heat dissipation pipe 2 to ensure the guiding ability of the capillary core 25 to the liquid heat dissipation medium.

[0047] The capillary core 25 can include a plurality of capillary layers, the plurality of capillary layers are arranged in a radial direction of the heat dissipation pipe 2, and each capillary layer includes a plurality of capillary channels arranged in a circumferential direction of the heat dissipation pipe 2.

[0048] The capillary core 25 can be constructed in any suitable manner, as an exemplary embodiment, the capillary core 25 can be constructed by copper wires, so that the capillary channels for the flow of the liquid heat dissipation medium can be formed between adjacent two copper wires, and in addition, the copper wires have the same material as the copper pipe, so that not only the capillary core 25 and the heat dissipation pipe 2 can be easily connected, but also the reaction between the capillary core 25 and the heat dissipation pipe 2 can be avoided. In other embodiments, the capillary core can also be constructed in other suitable manners, such as arranging copper powder on the inner wall surface of the heat dissipation pipe 2 to construct the capillary core 25, or the capillary core 25 can be constructed as a mesh channel, and the present disclosure does not make specific limitations thereto.

[0049] According to a second aspect of the present disclosure, an outdoor unit is provided, comprising the electric control box and the heat sink. The evaporation end 21 can be attached to the electrical element 3 of the electric control box. Therefore, the outdoor unit has all the advantages of the heat sink, which will not be repeated here.

[0050] The electrical element 3 can be a chip. In this way, the thermal safety of the chip can be ensured to ensure the reliable operation of the air conditioner. In an exemplary embodiment, the electrical element 3 can be attached to the top surface of the heat dissipation pipe 2 and the base 1. In this way, the base 1 and the heat dissipation pipe 2 can simultaneously dissipate heat for the electrical element 3. Specifically, when the temperature of the electrical element 3 is high, the liquid heat dissipation medium can evaporate to absorb heat to reduce the temperature of the electrical element 3. The fins 4 can dissipate heat through the heat dissipation fan to reduce the temperature of the electrical element 3. That is, the heat sink can adopt a combination of air cooling and liquid cooling to dissipate heat, and the heat dissipation effect is good. In this way, not only can the heat dissipation effect be ensured to improve the overall performance of the outdoor unit, but also the volume of the heat dissipation pipe 2 can be reduced to save the manufacturing cost of the heat dissipation pipe 2. In other embodiments, the electrical element 3 can be arranged only by attaching the heat dissipation pipe 2. The worker can make appropriate design according to the actual heat dissipation requirement of the electrical element 3, and the present disclosure does not make specific limitation.

[0051] According to a third aspect of the present disclosure, an air conditioner is provided, comprising the above-mentioned outdoor unit. Therefore, the air conditioner has all the advantages of the heat sink, which will not be repeated here. The number of electrical elements 3 can be one or more for different types of air conditioners. Each electrical element 3 is provided with a heat dissipation pipe 2, and the evaporation end 21 of each heat dissipation pipe 2 is attached to the corresponding electrical element 3. In this way, not only can the heat dissipation effect of the heat dissipation pipe 2 on the corresponding electrical element 3 be ensured, but also the heat released by the electrical element 3 with high temperature can be avoided to affect the heat dissipation effect of the electrical element 3 with low temperature. For example, as shown in FIG. 1, when the number of electrical elements 3 is two, the two heat dissipation pipes 2 can be arranged along the length direction of the base 1. In this way, the length of the heat dissipation pipe 2 can be increased to strengthen the heat dissipation effect. The axes of the two heat dissipation pipes 2 can coincide or be parallel. In this way, the two heat dissipation pipes 2 can be arranged along the length direction of the base 1 to dissipate heat for the two electrical elements 3 at the same time. Figures 1 to 2

[0052] ​The heat dissipator provided by the present disclosure can absorb the heat of the electrical element 3 and vaporize when the liquid heat dissipation medium at the volatilization end 21 is in liquid state, so as to dissipate the heat of the electrical element 3. When the amount of the vapor at the volatilization end 21 gradually increases, the vapor at the volatilization end 21 flows towards the condensation end 22 and releases heat at the condensation end 22 to liquefy the liquid heat dissipation medium. Then, the liquid heat dissipation medium moves towards the volatilization end 21 through the capillary core 25 to continue to absorb the heat of the electrical element 3. Thus, the heat dissipation pipe 2 can continuously dissipate the heat of the electrical element 3 through the above-mentioned circulation.

[0053] The preferred embodiments of the present disclosure are described in detail above with reference to the drawings, but the present disclosure is not limited to the specific details in the above-described embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

[0054] In addition, it should be noted that each specific technical feature described in the above-described specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0055] In addition, various different embodiments of the present disclosure can also be combined in any appropriate manner, as long as they do not deviate from the idea of the present disclosure, and they should also be considered as disclosed by the present disclosure.

Claims

1. A heat sink, characterized by, The heat sink comprises a base and a heat pipe, the base is provided with a recess, the heat pipe is installed in the recess, the heat pipe is provided with a phase-changeable heat medium, and has a relatively arranged volatilization end and condensation end, and the volatilization end is located below the electrical element.

2. The heat spreader of claim 1, wherein, The volatilization end is arranged in close contact with the electrical element.

3. The heat spreader of claim 1, wherein, The base has a side surface, the recess extends to the side surface, forms a notch on the side surface, and the condensation end is arranged in the notch and flush with the side surface.

4. The heat sink of claim 3, wherein, The recess has opposite end surfaces and the notch, and the volatilization end abuts against the end surfaces.

5. The heat spreader of claim 1, wherein, The recess is configured as an arc-shaped groove, and the heat pipe has an arc-shaped matching part to be in close contact with the arc-shaped groove in a shape matching manner.

6. The heat sink of claim 5, wherein, The cross section of the arc-shaped groove is configured as a circular arc, and the corresponding central angle of the circular arc is greater than or equal to 180 degrees.

7. The heat sink of claim 5, wherein, The cross section of the heat pipe is a D-shaped tube, and has a top wall surface connected with the arc-shaped matching part, and the base has a top surface, and the top wall surface is flush with the top surface.

8. The heat spreader of claim 1, wherein, The number of the heat pipes is at least two, and the at least two heat pipes are arranged in sequence along the length direction of the base.

9. The heat spreader of claim 1, wherein, The heat pipe is provided with a capillary core between the condensation end and the volatilization end.

10. The heat sink of claim 9, wherein, The heat pipe has an inner wall surface, and the capillary core is annularly arranged on the inner wall surface.

11. An outdoor unit characterized by comprising: The heat sink comprises an electric control box and the heat sink of any one of claims 1-10, and the volatilization end is in close contact with the electrical element of the electric control box.

12. An air conditioner characterized by comprising: The outdoor unit comprises the electric control box and the heat sink of any one of claims 1-10, and the volatilization end is in close contact with the electrical element of the electric control box.

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