Heat-generating 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 that make up 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 reality is that in recent electronic devices, due to slimming, high integration, and high performance, the space between components has become narrower 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】 Many heat pipe type or vapor chamber type cooling devices are widely used, which are provided so that a predetermined refrigerant circulates while undergoing a phase change due to the temperature difference in the surroundings. 【0006】 The heat pipe type or vapor chamber type cooling device has a hollow (or internal space) formed, and a capillary wick part (capillary core part), 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 a separate heat sink is attached to the outside of a heat pipe type or vapor chamber type cooling device, both ends of the cooling device protrude beyond the heat sink. In this case, since the ends of the cooling device do not include a wick or separate support, there is a problem that both ends of the cooling device are easily damaged by impact or other forces. [Overview of the project] [Problems that the invention aims to solve] 【0008】 In one embodiment, the heating element cooling device has separate block sections attached to both ends of the body section. 【0009】 The problems that this invention aims to solve are not limited to those mentioned above, and other problems not mentioned will be clearly understood by an ordinary person of the art from the following description. [Means for solving the problem] 【0010】 According to one embodiment of the present disclosure, a heating element cooling device is provided, comprising: a body portion including a hollow inside which a working fluid circulates, a body portion including a wick portion disposed on at least a part of the inner wall of the body portion 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 space portion, and a block portion inserted into the space portion and welded together. [Effects of the Invention] 【0011】 According to one embodiment, the heating element cooling device can be prevented from being easily damaged at both ends by impact or the like by attaching separate block sections to both ends of the body section. [Brief explanation of the drawing] 【0012】 [Figure 1] This is a coupled perspective view of a heating element cooling device according to one embodiment of the present disclosure. [Figure 2] This is an exploded perspective view of a heating element cooling device according to one embodiment of the present disclosure. [Figure 3] This is a side cross-sectional view of a heating element cooling device according to one embodiment of the present disclosure. [Figure 4] This is an enlarged cross-sectional view of the body and block portions of a heating element cooling device according to one embodiment of the present disclosure. [Figure 5] This figure shows the block portion of a heating element cooling device according to one embodiment of the present disclosure. [Modes for carrying out the invention] 【0013】 Some embodiments of this disclosure will be described in detail below through illustrative drawings. Note that, in assigning reference numerals to the components in each drawing, the same component will, to the greatest extent possible, have the same reference numeral even if shown in different drawings. Furthermore, in describing this disclosure, if a specific description of a related known configuration or function is deemed to obscure the gist of this disclosure, such detailed description will be omitted. 【0014】 In describing the components of the embodiments relating to this disclosure, reference numerals such as 1st, 2nd, i), ii), a), b), etc., may be used. Such reference numerals are used to distinguish a component from other components, and do not limit the nature, order, or sequence of the component in question. When a part of the specification is said to "include" or "compile" a component, this means that it may include other components, rather than excluding them, unless explicitly stated otherwise. 【0015】 A heat-generating element cooling device 1 according to one embodiment of the present disclosure is a heat dissipation component to which a heat dissipation method that excludes the induction of phase change of a refrigerant by a compressor can be applied. It is designed to cool a heat-generating element that is electrically driven and generates heat by transferring heat while undergoing a phase change solely by heat supplied from an external source under atmospheric pressure without using a compressor, and is applicable to vapor chambers, heat pipes, and heat sinks. 【0016】 Figure 1 is a coupled perspective view of a heating element cooling device according to one embodiment of the present disclosure. 【0017】 Referring to Figure 1, the heat-generating element cooling device 1 of this disclosure includes all or part of a body unit 10, a block unit 12, and a heat sink 13. 【0018】 The body portion 11 is a flat type in which the length in the width direction (y-axis direction in Figure 1) is relatively longer than the length in the thickness direction (z-axis direction in Figure 1). The body portion 11 includes a hollow space that is filled with refrigerant and is movable. 【0019】 A wick portion 113 is formed on the inner wall of the body portion 11. The wick portion 113 is formed by applying heat to the inner wall of the body portion 11 using the high concentrated energy of a laser, creating scratches or scratches to a certain depth or deeper. The wick portion 113 is formed to cause the working fluid, such as a refrigerant filled in the body portion 11, to flow through capillary action. The wick portion 113 can cause the liquid phase working fluid to flow from the condense unit to the evaporate unit. For example, when heat is transferred to the inside of the heat-generating element cooling device 1, the working fluid filled inside undergoes a phase change due to the transferred heat. The working fluid that has undergone the phase change can dissipate heat to the outside by surface tension and capillary force by utilizing the wick portion 113. 【0020】 The wick portions 113 are formed to be aligned along the longitudinal direction of the body portion 11 (the x-axis direction in Figure 1). The wick portions 113 are formed to be aligned at predetermined intervals in the width direction of the body portion 11. The wick portions 113 are formed to protrude from the lower inner wall in the thickness direction of the body portion 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. By forming the heat sink 13 on the outer wall of the body portion 11, the heat generating element cooling device 1 of the present disclosure has an effect of additionally dissipating heat together with the body portion 11. By manufacturing the heat generating element cooling device 1 of the present disclosure by an extrusion method, 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 heat generating element cooling device according to an embodiment of the present disclosure. 【0023】 FIG. 3 is a side sectional view of a heat generating element cooling device according to an embodiment of the present disclosure. 【0024】 Referring to FIGS. 2 and 3, the heat generating 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 circulates freely inside the body portion 11. As a result, the fluidity of the working fluid increases, and the heat dissipation efficiency of the heat generating 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 inner wall of the space portion 111 is not formed with a wick portion 113 or a separate support portion. Therefore, when the space portion 111 is hermetically sealed in a vacuum as it is, there is a problem that both ends of the heat generating element cooling device 1 are easily damaged by an external impact or the like. 【0027】 The block portion 12 of the heat-generating element cooling device 1 of this 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 section 12 can be inserted into the space section 111 and welded all around. The entire finished surface can be welded using the wobble welding method. Wobble welding is a method in which welding progresses in a specific pattern. The welding conditions are as follows. 【0029】 A continuous welding method is used when welding the block section 12 and the space section 111. The wavelength of the laser used is 1030 nm. Welding can be performed with a dual beam having two beam characteristics, and the power ratio of the core beam and ring beam is 4:6. For example, when using a welding machine with a power output of 2 kW, the power output of the core beam is 800 W and the power output of the ring beam is 1.2 kW. The wobble size and frequency are 0.15 mm and 200 Hz, respectively. The laser power is adjusted to 90% (1100 W) - 10% (750 W). That is, 90% of a certain length is welded at 1100 W, and the last 10% is welded at 750 W. However, the welding conditions for the block section 12 and the space section 111 in this disclosure are not limited to this and can be designed in various ways as needed. 【0030】 The bent portion 112 is formed by bending at least a portion of the longitudinal direction of the body portion 11. The bent portion 112 is bent at a predetermined angle to the extent that it does not obstruct the movement of the working fluid within the body portion 11. The body portion 11, excluding the bent portion 112, is formed parallel. However, the disclosure is not limited thereto, and the number, angle, and shape of the bent portion 112 and the body portion 11 can be designed in various ways as needed. 【0031】 Figure 4 is an enlarged view of the cross-sections of the body and block portions of a heating element cooling device according to one embodiment of the present disclosure. 【0032】 Figure 5 shows a block section of a heating element cooling device according to one embodiment of the present disclosure. 【0033】 Referring to Figures 4 and 5, the block portion 12 of the heat-generating element cooling device 1 of this disclosure includes a support portion 121 and a body 122. 【0034】 The support portions 121 are arranged at predetermined intervals in the width direction of the block portion 12. The support portions 121 are arranged at predetermined intervals and aligned with the wick portion 113 formed on the inner wall of the body portion 11. By aligning the support portions 121 with the wick portion 113, the working fluid can circulate smoothly 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 together, thereby sealing the space portion 111 under 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. The inclusion of one or more circular grooves 121a in the support portion 121 facilitates the smooth circulation of the working fluid through the body portion 11 and the space portion 111. The grooves 121a formed in each support portion 121 are formed to correspond to the grooves 121a formed in adjacent support portions 121. However, the shape and number of the support portions 121 and grooves 121a are not limited thereto and can be designed in various ways as needed. 【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 thickness of the body 122 and the support portion 121 corresponds 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 the wick portion 113 or a separate support portion is not formed on the inner wall. 【0038】 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. Therefore, when the space portion 111 is sealed in a vacuum, the block portion 12 can support the space portion 111, thus preventing both ends of the heating element cooling device 1 from being easily damaged by external impacts or the like. 【0039】 The above description is merely illustrative of the technical concept of this embodiment, and any person with ordinary skill in the art to which this embodiment belongs will be able to make various modifications and variations without departing from the essential characteristics of this embodiment. Therefore, this embodiment is for illustrative purposes only and not to limit the technical concept of this embodiment, and the scope of the technical concept of this embodiment is not limited by such embodiment. The scope of protection of this embodiment should be interpreted by the claims, and all technical concepts within an 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 15 July 2022, which is included herein by reference in its entirety. [Explanation of symbols] 【0041】 1. Cooling device for heat-generating element 11 Body 12 Block Sections 13 Heatsink

Claims

[Claim 1] A body portion including a first internal space 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, which allows the working fluid to flow as a heat transfer medium, A space-forming portion extending from both ends of the body portion and including a second internal space, It includes a block portion that is inserted into the space forming portion and welded together, The block portion includes support portions arranged at predetermined intervals in the width direction of the block portion, A cooling device for a heat-generating element, wherein the support portion includes one or more grooves that allow the working fluid to pass through in the width direction, thereby enabling the circulation of the working fluid. [Claim 2] The heating element cooling device according to claim 1, wherein the wick portion is not arranged on the inner wall of the space forming portion. [Claim 3] The heating element cooling device according to claim 1, wherein the wick portions are arranged in the longitudinal direction of the body portion at predetermined intervals in the width direction of the body portion. [Claim 4] The heat-generating element cooling device according to claim 1, wherein the support portion is arranged in alignment with the wick portion. [Claim 5] The heating element cooling device according to claim 1, wherein the body portion further includes a bent portion in which at least a part is folded. [Claim 6] 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 forming portion. [Claim 7] Furthermore, the heat-generating element cooling device according to claim 1 includes a heat sink disposed on at least a portion of the outer wall of the body portion.

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