Heating element cooling device

Abstract

Provided is a heating element cooling device that can prevent being easily damaged by an impact or the like. 【Solution means】The heating element cooling device includes a body portion including a hollow in which a working fluid circulates inside, the body portion including a wick portion disposed on at least a part of the inner wall of the body portion so that the working fluid flows as a heat source, a space portion formed to extend from both ends of the body portion and including a hollow, and a block portion inserted into the space portion and welded and joined.

Description

Technical Field

[0001] The present disclosure relates to a heating element cooling device.

Background Art

[0002] The content described in this part only provides background information related to the present disclosure and does not constitute prior art.

[0003] Electronic components constituting an electronic device generate heat during operation. Electronic devices such as computers, servers, and high-performance antenna devices include electronic components such as IC chips, CPUs, and transceiver elements. Such electronic components (hereinafter referred to as "heating elements") generate a large amount of heat during operation. If the heating element that generates heat is not cooled, its performance will be significantly degraded, or in some cases, it will be damaged and operation will become difficult. Therefore, the heating element must be cooled.

[0004] The fact is that in recent electronic devices, the spacing between components has become narrower due to slimming, high integration, and high performance, etc., and the heat generation load has increased. As a result, cooling of the heating element is almost essential, and most electronic devices are equipped with a cooling device for cooling the heating element.

[0005] A heat pipe type or vapor chamber type cooling device provided to circulate a predetermined refrigerant while undergoing a phase change due to a peripheral temperature difference is widely used.

[0006] A heat pipe type or vapor chamber type cooling device has a hollow (or internal space) formed, and a capillary wick portion (capillary core portion), which is a porous body, is manufactured by a sintering method inside a pipe-shaped (or panel) body tube (or body panel) made of a heat conductive material.

[0007] When an additional separate heat sink is attached outside a cooling device of a heat pipe type or a vapor chamber type, both ends of the cooling device protrude beyond the heat sink. At this time, since both ends of the cooling device do not include a wick portion or a separate support portion, there is a problem that both ends of the cooling device are easily damaged by an impact or the like.

Summary of the Invention

Problems to be Solved by the Invention

[0008] A heating element cooling device according to an embodiment couples separate block portions to both ends of a body portion.

[0009] The problems to be solved by the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those of ordinary skill in the art from the following description.

Means for Solving the Problems

[0010] According to an embodiment of the present disclosure, there is provided a heating element cooling device including a body portion including a hollow inside which a working fluid circulates, the body portion including a wick portion disposed on at least a part of an inner wall of the body portion so that the working fluid flows as a heat source, a space portion formed to extend from both ends of the body portion and including a hollow, and a block portion inserted into the space portion and welded and joined.

Effects of the Invention

[0011] According to an embodiment, the heating element cooling device can prevent both ends of the heating element cooling device from being easily damaged by an impact or the like by coupling separate block portions to both ends of the body portion.

Brief Description of the Drawings

[0012]

Figure 1

Figure 2

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Figure 5

Mode for Carrying Out the Invention

[0013] Hereinafter, some embodiments of the present disclosure will be described in detail through exemplary drawings. When adding reference signs to the components of each drawing, it should be noted that for the same components, as much as possible, the same signs are used even if they are shown in different drawings. In addition, when explaining the present disclosure, if it is determined that a specific description of a related known configuration or function obscures the gist of the present disclosure, the detailed description thereof will be omitted.

[0014] When explaining the components of the embodiments according to the present disclosure, signs such as first, second, i), ii), a), b), etc. may be used. Such signs are for distinguishing the components from other components, and the essence, order, sequence, etc. of the corresponding components are not limited by the signs. When a part of the specification says that a certain component "includes" or "comprises", this means that, unless explicitly stated to the contrary, it does not exclude other components, but may further include other components.

[0015] A heating element cooling device 1 according to an embodiment of the present disclosure is a heat dissipation component to which a heat dissipation method of a concept excluding induction of phase change of a refrigerant by a compressor can be applied. It is designed to cool a heating element that is electrically driven and generates heat by transferring heat while causing a phase change solely by heat supplied from the outside under atmospheric pressure without using a compressor, and is applicable to a vapor chamber, a heat pipe, a heat sink, and the like.

[0016] FIG. 1 is an assembled perspective view of a heating element cooling device according to an embodiment of the present disclosure.

[0017] Referring to FIG. 1, the heating element cooling device 1 of the present disclosure includes all or part of a body unit 10, a block unit 12, and a heat sink 13.

[0018] The body unit 11 is of a flat type in which the length in the width direction (the y-axis direction in FIG. 1) is relatively long compared to the length in the thickness direction (the z-axis direction in FIG. 1). The body unit 11 includes a hollow filled with a refrigerant and allowing the refrigerant to move.

[0019] A wick portion 113 is formed on the inner wall of the body unit 11. The wick portion 113 is formed by applying heat to the inner wall of the body unit 11 using the high-intensity energy of a laser to scratch or damage the inner wall to a certain depth or more. The wick portion 113 is formed to cause a capillary phenomenon and allow a working fluid such as the refrigerant filled in the body unit 11 to flow. The wick portion 113 can allow the liquid-phase working fluid to flow from a condense unit to an evaporate unit. For example, when heat is transferred to the inside of the heating element cooling device 1, the working fluid filled inside undergoes a phase change due to the transferred heat. The working fluid that has undergone a phase change can dissipate heat to the outside by surface tension and capillary force by utilizing the wick portion 113.

[0020] The wick portion 113 is formed to be arranged in the longitudinal direction (the x-axis direction in FIG. 1) of the body unit 11. The wick portion 113 is formed to be arranged at a predetermined interval in the width direction of the body unit 11. The wick portion 113 is formed to protrude from the upper and lower inner walls in the thickness direction of the body unit 11.

[0021] The heat sink 13 is formed on at least a part of the outer wall of the body portion 11. The heat sink 13 is formed on the outer wall in the thickness direction of the body portion 11. The heat sinks 13 are formed so as to be arranged at a predetermined interval in the width direction of the body portion 11. The heating element cooling device 1 of the present disclosure has an effect that additional heat dissipation can be achieved together with the body portion 11 by forming the heat sink 13 on the outer wall of the body portion 11. The heating element cooling device 1 of the present disclosure is manufactured by an extrusion method, so that even if the heat sink 13 is formed on the body portion 11, the manufacturing becomes easy.

[0022] FIG. 2 is an exploded perspective view of a heating element cooling device according to an embodiment of the present disclosure.

[0023] FIG. 3 is a side cross-sectional view of a heating element cooling device according to an embodiment of the present disclosure.

[0024] Referring to FIGS. 2 and 3, the heating element cooling device 1 of the present disclosure further includes a space portion 111 and a bent portion 112.

[0025] The space portions 111 are formed at both longitudinal ends of the body portion 11. For example, the space portions 111 are formed to protrude in the longitudinal direction of the body portion 11 more than the heat sinks 13 formed on the outer wall of the body portion 11. By forming the space portions 111 at both ends of the body portion 11, the working fluid freely circulates inside the body portion 11. As a result, the fluidity of the working fluid increases, and the heat dissipation efficiency of the heating element cooling device 1 increases.

[0026] The space portions 111 extend from both longitudinal ends of the body portion 11 and are formed integrally with the body portion 11. The space portions 111 include a hollow 111a filled with a working fluid and movable. However, unlike the body portion 11, the space portions 111 are not formed with a wick portion 113 or a separate support portion on the inner wall. Therefore, when the space portions 111 are hermetically sealed as they are in a vacuum, there is a problem that both ends of the heating element cooling device 1 are easily damaged by an external impact or the like.

[0027] The block portion 12 of the heating element cooling device 1 of the present disclosure is inserted into the hollow 111a of the space portion 111. The block portion 12 is inserted into the space portion 111, and the block portion 12 and the space portion 111 are joined by welding. The block portion 12 has a shape corresponding to the width and length of the space portion 111.

[0028] The block portion 12 can be inserted into the space portion 111 and welded around the entire circumference. The entire finish surface can be welded by the wobble welding method. At this time, wobble welding refers to a method that progresses while drawing a certain pattern during welding. The welding conditions are as follows.

[0029] The continuous welding method is used when welding the block portion 12 and the space portion 111. At this time, the wavelength of the laser used is 1030 nm. Welding can be performed with a dual beam having two beam characteristics, and the output ratio of the CORE beam and the RING beam is 4:6. For example, when using a welding machine, the output of the core beam at 2KW output is 800W, and the output of the ring beam is 1.2KW. The size and frequency of the wobble are 0.15 mm and 200 Hz, respectively. The output of the laser is adjusted to 90% (1100W) - 10% (750W). That is, 90% of a certain length standard is welded at 1100W, and the last 10% is welded at 750W. However, the welding conditions of the block portion 12 and the space portion 111 of the present disclosure are not limited to this, and are designed variously as required.

[0030] The bent portion 112 is formed by bending at least a part of the longitudinal direction of the body portion 11. The bent portion 112 is bent at a predetermined angle within a range that does not prevent the movement of the working fluid in the body portion 11. The body portion 11 excluding the bent portion 112 is formed in parallel. However, the present disclosure is not limited to this, and the number, angle of the bent portion 112, and the shape of the body portion 11 are designed variously as required.

[0031] FIG. 4 is an enlarged view of a cross section of the body portion and the block portion of the heating element cooling device according to an embodiment of the present disclosure.

[0032] FIG. 5 is a diagram showing a block portion of a heating element cooling device according to an embodiment of the present disclosure.

[0033] Referring to FIGS. 4 and 5, the block portion 12 of the heating element cooling device 1 of the present disclosure includes a support portion 121 and a body 122.

[0034] The support portions 121 are arranged at a predetermined interval in the width direction of the block portion 12. The support portions 121 are arranged at a predetermined interval and aligned so as to be aligned with the wick portions 113 formed on the inner wall of the body portion 11. By arranging the support portions 121 so as to be aligned with the wick portions 113, the working fluid can be smoothly circulated through the body portion 11 and the space portion 111.

[0035] When the block portion 12 is inserted into the space portion 111, the body 122 closes the hollow 111a of the space portion 111, and the block portion 12 and the space portion 111 are welded, so that the space portion 111 can be hermetically sealed in a vacuum. At this time, the shape of the body 122 corresponds to the shape of the hollow 111a of the space portion 111.

[0036] The support portion 121 further includes one or more grooves 121a through which the working fluid can circulate. By including one or more circular grooves 121a in the support portion 121, the working fluid can be smoothly circulated through the body portion 11 and the space portion 111. The grooves 121a formed in each support portion 121 are formed so as to correspond to the grooves 121a formed in the adjacent support portions 121. However, the shapes and numbers of the support portions 121 and the grooves 121a are not limited thereto, and various designs can be made as necessary.

[0037] The block portion 12 has a shape corresponding to the width and length of the space portion 111. The body 122 has a shape corresponding to the hollow 111a of the space portion 111. The thicknesses of the body 122 and the support portion 121 correspond to the thickness of the hollow 111a of the space portion 111. The length of the block portion 12 corresponds to the length of the space portion 111. Therefore, the block portion 12 can support the space portion 111 in which no wick portion 113 or separate support portion is formed on the inner wall.

[0038] The block part 12 is inserted into the space part 111, and the block part 12 and the space part 111 are joined by welding. Therefore, when the space part 111 is sealed in a vacuum as it is, since the block part 12 can support the space part 111, it is possible to prevent both ends of the heating element cooling device 1 from being easily damaged by an external impact or the like.

[0039] The above description merely exemplarily explains the technical idea of this embodiment. For those having ordinary knowledge in the technical field to which this embodiment belongs, various modifications and variations are possible without departing from the essential characteristics of this embodiment. Therefore, this embodiment is not intended to limit the technical idea of this embodiment but to explain it, and the scope of the technical idea of this embodiment is not limited by such an embodiment. The protection scope of this embodiment should be interpreted by the scope of the claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of rights of this embodiment.

[0040] [CROSS-REFERENCE TO RELATED APPLICATION] This patent application claims priority to Patent Application No. 10-2022-0087358, filed in Korea on July 15, 2022, which is incorporated herein by reference in its entirety.

Description of Reference Numerals

[0041] 1 Heating element cooling device 11 Body part 12 Block part 13 Heat sink

Claims

1. A body portion including a hollow in which a working fluid circulates, the body portion including a wick portion disposed on at least a part of the inner wall of the body portion, the wick portion being configured to allow the working fluid to flow as a heat source; A space portion extending from both ends of the body portion and including a hollow; A block portion inserted into the space portion and welded thereto, the heating element cooling device comprising the same.

2. The heating element cooling device according to claim 1, wherein a wick portion is not disposed on the inner wall of the space portion.

3. The heating element cooling device according to claim 1, wherein the wick portion is disposed at a predetermined interval in the width direction of the body portion and in the longitudinal direction of the body portion.

4. The heating element cooling device according to claim 1, wherein the block portion further includes a support portion disposed at a predetermined interval in the width direction of the block portion.

5. The heating element cooling device according to claim 4, wherein the support portion further includes one or more grooves through which the working fluid can circulate.

6. The heating element cooling device according to claim 4, wherein the support portion is arranged to be aligned with the wick portion.

7. The heating element cooling device according to claim 1, wherein the body portion further includes a bent portion at least a part of which is bent.

8. The heating element cooling device according to claim 1, wherein the block portion has a shape corresponding to the width and length of the space portion.

9. The heating element cooling device according to claim 1, further including a heat sink disposed on at least a part of the outer wall of the body portion.

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