Gas-liquid phase change cooling assembly and inductor

Abstract

The utility model discloses a gas-liquid phase change cooling assembly and an inductor, the gas-liquid phase change cooling assembly comprises a shell and a cooling piece, a cavity used for accommodating a heating element is arranged in the shell, insulating cooling liquid is injected in the cavity, and the heating element is located in the insulating cooling liquid; the cooling part is arranged on the upper portion of the shell, a condensation part located in the cavity is arranged at the bottom end of the cooling part, a heat dissipation part is arranged on the upper portion of the cooling part, the insulating cooling liquid is gasified when the heating element is heated to the boiling point of the insulating cooling liquid, and the gasified insulating cooling liquid is liquefied after making contact with the condensation part and flows back into the cavity. The heat dissipation part can dissipate heat transferred when the insulating cooling liquid is gasified, the heating element is located in the insulating cooling liquid, so that the temperature of the heating element can be stabilized within the boiling point of the insulating cooling liquid, and in addition, the heat dissipation effect of the heating element can be effectively improved through the heat dissipation part.

Description

Technical Field

[0001] The utility model relates to the technical field of heat dissipation of electronic components, and particularly relates to a gas-liquid phase change cooling component and an inductor. Background Art

[0002] An inductor is an electronic component that can convert electrical energy into magnetic energy and store it. During the operation of the inductor, some heat will be generated. To ensure the working stability of the inductor, it is necessary to dissipate its heat.

[0003] The existing heat dissipation methods of inductors mainly rely on air-cooling, and usually use fans or natural wind to take away heat. Among them, using a fan for heat dissipation requires additional power consumption, and when using natural wind for heat dissipation, its reliability is poor. For power inductors, currently, potting thermal conductive glue is mainly used as a medium to achieve rapid heat conduction. However, due to the limitations of thermal conductive materials (such as low thermal conductivity, etc.) and the limitations of product manufacturing processes (potting thermal conductive glue requires solidification, etc.), high-power products to meet their reliable heat generation requirements will result in the product being too large in size and too high in cost.

[0004] Therefore, how to improve the heat dissipation effect of inductors is a technical problem that those skilled in the art need to solve currently. Summary of the Utility Model

[0005] One object of the utility model is to provide a gas-liquid phase change cooling component, which can effectively improve the heat dissipation effect of heat-generating components, and another object is to provide an inductor including the above gas-liquid phase change cooling component.

[0006] To achieve the above object, the utility model provides the following technical solutions:

[0007] A gas-liquid phase change cooling component, comprising:

[0008] A housing, a chamber for accommodating a heat-generating component is provided in the housing, an insulating cooling liquid is injected into the chamber, and the heat-generating component is in the insulating cooling liquid;

[0009] A cooling member, the cooling member is provided at the upper part of the housing, a condensation part located in the chamber is provided at the bottom end of the cooling member, a heat dissipation part is provided at the upper part of the cooling member, the insulating cooling liquid is used to vaporize when the heat-generating component is heated to the boiling point of the cooling liquid, liquefy after contacting the condensation part, and flow back into the chamber, and the heat dissipation part is used to dissipate the heat transferred when the insulating cooling liquid vaporizes.

[0010] In some embodiments, the cooling member includes a cover plate, the condensation part is a plurality of condensation fins arranged at the bottom of the cover plate, the heat dissipation part is a plurality of heat dissipation fins arranged at the upper part of the cover plate, and the cover plate is hermetically connected to the opening at the top of the housing.

[0011] In some embodiments, the housing includes a bottom shell and an upper shell, the chamber includes a first cavity arranged in the bottom shell and a second cavity arranged in the upper shell, the heating element is arranged in the first cavity, and the condensation fins are located in the second cavity.

[0012] In some embodiments, an insulating skeleton for supporting the heating element is arranged in the first cavity, and the insulating skeleton is used to separate the heating element from the inner wall of the first cavity.

[0013] In some embodiments, a sealing ring is arranged between the upper end surface of the upper shell and the lower end surface of the cover plate.

[0014] In some embodiments, a connecting portion extending toward the peripheral side is arranged at the bottom of the bottom shell, and a connecting hole is arranged on the connecting portion.

[0015] In some embodiments, a lead hole is arranged on the cover plate, and the lead hole is used for leading out the wire of the heating element from the chamber.

[0016] In some embodiments, a pressure relief valve is arranged on the cooling member, and the pressure relief valve is communicated with the chamber.

[0017] In some embodiments, the pressure relief valve includes a rubber plug and a valve body, a pressure relief hole is arranged on the cooling member, the valve body is connected to the pressure relief hole, and the rubber plug is detachably connected to the valve body.

[0018] An inductor includes an inductor body and also includes the gas-liquid phase change cooling assembly according to any one of the above, and the heating element is the inductor body.

[0019] Compared with the prior art, the above technical solution has the following advantages:

[0020] A gas-liquid phase change cooling component provided by the present utility model comprises: a housing and a cooling member. A chamber for accommodating a heating element is provided inside the housing, and an insulating coolant is filled in the chamber, and the heating element is in the insulating coolant; the cooling member is arranged at the upper part of the housing, a condensation part located in the chamber is provided at the bottom end of the cooling member, and a heat dissipation part is provided at the upper part of the cooling member. The insulating coolant is used for vaporizing when the heating element is heated to the boiling point of the insulating coolant. After vaporization, the insulating coolant contacts the condensation part and then liquefies, and flows back into the chamber, thereby realizing the recycling of the insulating coolant. The heat dissipation part can dissipate the heat transferred when the insulating coolant vaporizes. Since the heating element is located in the insulating coolant, the temperature of the heating element can be stabilized within the boiling point of the insulating coolant. In addition, the heat dissipation effect of the heating element can be effectively improved through the heat dissipation part.

[0021] An inductor provided by the present utility model also has the above beneficial effects because it includes the above gas-liquid phase change cooling component. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the following drawings are only the embodiments of the present utility model. For those of ordinary skill in the art, other drawings can also be obtained according to the provided drawings without creative efforts.

[0023] Figure 1 It is a schematic structural diagram of a gas-liquid phase change cooling component provided by a specific embodiment of the present utility model;

[0024] Figure 2 It is a schematic structural diagram of the housing of a gas-liquid phase change cooling component provided by a specific embodiment of the present utility model with an inductor body installed inside;

[0025] Figure 3 It is a schematic structural diagram of the housing of a gas-liquid phase change cooling component provided by a specific embodiment of the present utility model;

[0026] Figure 4 It is a schematic structural diagram of the cooling member of a gas-liquid phase change cooling component provided by a specific embodiment of the present utility model.

[0027] The reference numerals are as follows:

[0028] 10 - housing, 11 - bottom shell, 111 - first cavity, 112 - connecting part, 1121 - connecting hole, 12 - upper shell, 121 - second cavity, 13 - sealing ring;

[0029] 20 - Cooling element, 21 - Cover plate, 211 - Pressure relief hole, 212 - Lead hole, 22 - Condensing fin, 23 - Heat sink;

[0030] 30 - Pressure relief valve, 31 - Rubber plug, 32 - Clip;

[0031] 40 - Inductor body, 41 - Wire, 42 - Insulating skeleton;

[0032] 50 - Sealing plug;

[0033] 60 - Bolt. Specific embodiments

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] Please refer to Figures 1 - 4 A gas-liquid phase change cooling assembly provided by an embodiment of the present invention includes: a housing 10 and a cooling element 20. A chamber for accommodating a heating element is provided inside the housing 10, and an insulating coolant is filled in the chamber. The heating element is in the insulating coolant. The heating element can be an inductor, a transformer, a reactor, etc. When designing, the cross-sectional area of the coils of electronic components such as inductors and transformers can be reduced to increase the current density, reduce the volume of the magnetic core, thereby reducing the overall volume of the product, being beneficial to the miniaturization of the product, and being able to reduce the product cost; The cooling element 20 is provided at the upper part of the housing 10. A condensing part located in the chamber is provided at the bottom end of the cooling element 20, and a heat dissipation part is provided at the upper part of the cooling element 20. The insulating coolant is used to vaporize when the heating element heats up to the boiling point of the insulating coolant. After vaporization, the insulating coolant liquefies after contacting the condensing part and flows back into the chamber, thereby realizing the recycling of the insulating coolant. The heat dissipation part can dissipate the heat transferred when the insulating coolant vaporizes. Since the heating element is located in the insulating coolant, the temperature of the heating element can be stabilized within the boiling point of the insulating coolant. In addition, the heat dissipation effect of the heating element can be effectively improved through the heat dissipation part.

[0036] In some embodiments, such as Figure 4As shown, the cooling member 20 includes a cover plate 21. The condensation part is a plurality of condensation fins 22 arranged at the bottom of the cover plate 21. The plurality of condensation fins 22 preferably have the same thickness and are equally spaced, and are perpendicular to the plane where the cover plate 21 is located. The condensation fins 22 are preferably integrally formed on the cover plate 21. The heat dissipation part is a plurality of heat dissipation fins 23 arranged on the upper part of the cover plate 21. The plurality of heat dissipation fins 23 preferably have the same thickness and are equally spaced, and are perpendicular to the plane where the cover plate 21 is located. The heat dissipation fins 23 are preferably integrally formed on the cover plate 21. The cover plate 21 is hermetically connected to the opening at the top of the housing 10, where the cover plate 21 can be detachably connected to the housing 10 by bolts 60. The contact area between the vaporized insulating coolant and the condensation part can be increased through the plurality of condensation fins 22, thereby improving the condensation ability, and the heat dissipation effect can be improved through the plurality of heat dissipation fins 23.

[0037] In some embodiments, as Figure 2 and 3 shown, the housing 10 includes a bottom shell 11 and an upper shell 12. The bottom shell 11 and the upper shell 12 are preferably an integrally formed structure. The chamber includes a first cavity 111 provided in the bottom shell 11 and a second cavity 121 provided in the upper shell 12. The heating element is provided in the first cavity 111, and the condensation fins 22 are located in the second cavity 121. The materials of the bottom shell 11 and the upper shell 12 can be the same or different. The materials of the bottom shell 11 and the upper shell 12 can be metals, such as aluminum alloy or stainless steel, etc. The advantage is excellent thermal conductivity. When choosing a metal material, insulation treatment needs to be done with the heating element; the materials of the bottom shell 11 and the upper shell 12 can also be non-metals, such as ceramics, plastics, etc. The advantage is that no insulation treatment is required between the bottom shell 11 and the upper shell 12 and the heating element. In addition, the shape of the bottom shell 11 is preferably a cylindrical structure with a circular cross-section, and the shape of the upper shell 12 is preferably a cubic structure with a rectangular cross-section. The projection of the bottom shell 11 in the top view direction is within the projection of the upper shell 12 in the top view direction.

[0038] In some embodiments, when the housing 10 is made of a metal material, insulation treatment needs to be carried out between the housing 10 and the heating element, as Figure 2 shown, an insulating skeleton 42 for supporting the heating element is provided in the first cavity 111. The insulating skeleton 42 is used to isolate the heating element from the inner wall of the first cavity 111, that is, the insulating skeleton 42 can prevent the heating element from contacting the housing 10. The insulating skeleton 42 can be made of insulating materials such as plastics and ceramics.

[0039] In some embodiments, as Figure 2 and 3As shown, a sealing ring 13 is provided between the upper end surface of the upper shell 12 and the lower end surface of the cover plate 21. The sealing performance between the upper shell 12 and the cover plate 21 can be improved through the sealing ring 13. An annular groove can be provided on the upper end surface of the upper shell 12, and the sealing ring 13 is placed in the annular groove. When the opening of the upper shell 12 is a rectangular opening, the annular groove is correspondingly a rectangular frame, and the rectangular frame is provided around the rectangular opening. The cover plate 21 and the upper shell 12 can be fixed through bolts 60. A flange extending outward can be provided at the edge of the upper shell 12, and bolt holes 60 for the bolts 60 to pass through are respectively provided at the four corners of the flange and the cover plate 21.

[0040] In some embodiments, such as Figure 2 and Figure 3 As shown, a connecting portion 112 extending toward the peripheral side is provided at the bottom of the bottom shell 11, and a connecting hole 1121 is provided on the connecting portion 112. For example, when the bottom shell 11 is a cylindrical structure, the projection of the connecting portion 112 in the top view direction can be circular or square, or other shapes, which can be preset according to the actual installation position. A plurality of connecting holes 1121 can be provided on the connecting portion 112 to improve the connection stability.

[0041] In some embodiments, such as Figure 1 and Figure 4 As shown, a lead hole 212 is provided on the cover plate 21. The lead hole 212 is used for the wire 41 of the heating element to lead out from the chamber, so as to facilitate the connection of the heating element with other electronic components. A sealing plug 50 can be provided at the lead hole 212, and the wire 41 passes through the sealing plug 50. The sealing plug 50 is in close contact with the outer side wall of the wire 41 and the inner side wall of the lead hole 212. Through the sealing plug 50, the sealing performance of the chamber inside the housing 10 can be ensured, and thus it is convenient for the insulating coolant to circulate and dissipate heat better. It should be noted that providing the lead hole 212 on the cover plate 21 is just a way to facilitate conductive connection. An external terminal block structure can also be provided on the cover plate 21. In this case, there is no need for the wire 41 to lead out from the chamber. One end of the external terminal block structure located inside the chamber is connected to the wire 41 of the heating element, and the end of the external terminal block structure located outside the cover plate 21 can be connected to other electronic components.

[0042] In some embodiments, such as Figure 1 As shown, a pressure relief valve 30 is provided on the cooling member 20, and the pressure relief valve 30 is communicated with the chamber. Since the pressure inside the chamber will increase when the insulating coolant vaporizes, when the pressure inside the chamber is greater than the preset threshold, the pressure relief valve 30 can automatically open for exhaust to ensure its safety.

[0043] In some embodiments, the pressure relief valve 30 includes a rubber plug 31 and a valve body. A pressure relief hole 211 is provided on the cooling member 20, and the valve body is connected to the pressure relief hole 211. The rubber plug 31 is detachably connected to the valve body. The rubber plug 31 can be connected to the valve body through a clip 32. During use, the amount of the insulating coolant in the chamber can be regularly checked. When the insulating coolant in the housing 10 decreases, the rubber plug 31 can be opened to supplement the insulating coolant.

[0044] An embodiment of the present utility model further provides an inductor, which includes an inductor body 40 and the gas-liquid phase change cooling assembly provided in any one of the above embodiments. The heating element is the inductor body 40. The inductor body 40 is disposed in the chamber of the housing 10 and is immersed in the insulating coolant. For the beneficial effects of the inductor, reference can be made to the above gas-liquid phase change cooling assembly, which will not be elaborated herein.

[0045] It should be noted that in this specification, relational terms such as first and second are only used to distinguish one entity from several other entities, and do not necessarily require or imply any actual relationship or order between these entities.

[0046] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other.

[0047] The above has introduced in detail a gas-liquid phase change cooling assembly and an inductor provided by the present utility model. Specific examples are used herein to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the core idea of the present utility model. It should be pointed out that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and modifications can be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. A gas-liquid phase change cooling component, characterized in that Comprising: A housing (10), within which there is a chamber for accommodating a heating element, the chamber being filled with an insulating coolant, and the heating element being immersed in the insulating coolant; A cooling member (20), which is disposed at the upper part of the housing (10), the bottom end of the cooling member (20) having a condensation portion located within the chamber, and the upper part of the cooling member (20) having a heat dissipation portion. The insulating coolant is configured to vaporize when the heating element is heated to the boiling point of the coolant, liquefy after contacting the condensation portion, and then flow back into the chamber. The heat dissipation portion is used to dissipate the heat transferred when the insulating coolant vaporizes.

2. The gas-liquid phase change cooling component according to claim 1, wherein The cooling member (20) includes a cover plate (21), the condensation portion being a plurality of condensation fins (22) provided at the bottom of the cover plate (21), and the heat dissipation portion being a plurality of heat dissipation fins (23) provided at the upper part of the cover plate (21). The cover plate (21) is sealingly connected to the opening at the top of the housing (10).

3. The gas-liquid phase change cooling component according to claim 2, wherein The housing (10) includes a bottom shell (11) and an upper shell (12), the chamber including a first cavity (111) provided within the bottom shell (11) and a second cavity (121) provided within the upper shell (12). The heating element is disposed within the first cavity (111), and the condensation fins (22) are located within the second cavity (121).

4. The gas-liquid phase change cooling component according to claim 3, characterized in that An insulating skeleton (42) for supporting the heating element is provided within the first cavity (111), and the insulating skeleton (42) is used to separate the heating element from the inner wall of the first cavity (111).

5. The gas-liquid phase change cooling component according to claim 3, characterized in that A sealing ring (13) is provided between the upper end face of the upper shell (12) and the lower end face of the cover plate (21).

6. The gas-liquid phase change cooling component according to claim 3, characterized in that The bottom of the bottom shell (11) is provided with a connecting portion (112) extending towards the periphery, and a connecting hole (1121) is provided on the connecting portion (112).

7. The gas-liquid phase change cooling component according to claim 2, characterized in that, A lead hole (212) is provided on the cover plate (21), and the lead hole (212) is used for the wire (41) of the heating element to extend out of the chamber.

8. The gas-liquid phase change cooling assembly according to any one of claims 1 to 7, characterized in that, A pressure relief valve (30) is provided on the cooling member (20), and the pressure relief valve (30) is in communication with the chamber.

9. The gas-liquid phase change cooling component according to claim 8, wherein, The pressure relief valve (30) includes a rubber plug (31) and a valve body. A pressure relief hole (211) is provided on the cooling member (20), the valve body is connected to the pressure relief hole (211), and the rubber plug (31) is detachably connected to the valve body.

10. An inductor, comprising an inductance body (40), characterized in that, Also included is the gas-liquid phase change cooling assembly according to any one of claims 1 to 9, wherein the heating element is the inductor body (40).

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