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CN-122028381-A - Liquid cooling heat dissipation piece and electronic equipment

CN122028381ACN 122028381 ACN122028381 ACN 122028381ACN-122028381-A

Abstract

The invention discloses a liquid cooling radiating piece and electronic equipment, and relates to the technical field of electronic equipment heat dissipation, wherein the liquid cooling radiating piece comprises a plate body and a jet impact part, a first flow passage and a spacing rib are formed in the plate body, the spacing rib cuts off the first flow passage, so that the first flow passage is provided with a first section and a second section which are positioned on two opposite sides of the cut off, the jet impact part is connected to the plate body and is arranged corresponding to the spacing rib, a second flow passage communicated with the first flow passage is formed in the jet impact part, so that the first section is communicated with the second section through the second flow passage, and one side of the jet impact part, which is away from the plate body, is used for being connected with a heat source. According to the liquid cooling heat dissipation part, the high-speed fluid vertically impacts the hot surface, so that the thermal boundary layer can be thinned and destroyed, and the high local convection heat exchange coefficient is generated in the jet stagnation area, so that the heat dissipation efficiency is improved.

Inventors

  • ZHAO TAOCHENG
  • LI KE
  • YU QUANYAO

Assignees

  • 歌尔科技有限公司

Dates

Publication Date
20260512
Application Date
20260331

Claims (12)

  1. 1. A liquid-cooled heat sink, the liquid-cooled heat sink comprising: a plate body part in which a first flow passage and a spacing rib are formed, the spacing rib separating the first flow passage so that the first flow passage has a first section and a second section on opposite sides of the separation, and The jet impact part is connected to the plate body part and is arranged corresponding to the spacing ribs, and a second flow passage communicated with the first flow passage is formed in the jet impact part so that the first section is communicated with the second section through the second flow passage; The side of the jet impact part, which is away from the plate body part, is used for being connected with a heat source.
  2. 2. The liquid-cooled heat sink of claim 1 wherein the first flow channel is an annular flow channel, wherein the first flow channel has a shape profile that is an annular flow channel, an elliptical annular flow channel, or a polygonal annular flow channel; and/or the projection area of the jet impact part along the thickness direction of the plate body is larger than or equal to the contact area of the heat source and the jet impact part.
  3. 3. The liquid cooled heat sink of claim 1 wherein the first flow channel has a square annular flow channel in shape profile, the first flow channel having a first flow channel section and a second flow channel section extending in a first direction, the spacer bars separating the first flow channel section in a second direction such that the first flow channel section has the first section and the second section on either side of the spacer bars in the first direction, the first direction being disposed at an angle to the second direction.
  4. 4. The liquid-cooled heat sink of claim 3 wherein said first flow passage includes a plurality of said first flow passage each having said first flow passage section and said second flow passage section extending in said first direction, said plurality of first flow passage sections and said plurality of second flow passage sections each being spaced apart in said second direction, said spacing rib separating said plurality of first flow passage sections in said second direction, each of said first sections communicating with a corresponding one of said second sections through said second flow passage; The first direction and the second direction are perpendicular to each other.
  5. 5. The liquid-cooled heat sink of claim 1 wherein the projection of the spacer ribs in a third direction is within the projection of the jet impingement portion in the third direction; wherein the third direction is the thickness direction of the plate body.
  6. 6. The liquid-cooled heat sink of claim 1 wherein a third flow channel is also formed in the plate body spaced from the first flow channel, the third flow channel being an annular flow channel.
  7. 7. The liquid-cooled heat sink of claim 1 wherein the plate body comprises a first support layer and cover plates disposed on opposite sides of the first support layer, the first support layer comprising a plurality of first support ribs and the spacer ribs connected to the plurality of first support ribs, the first flow channel being formed between two adjacent first support ribs; and a through hole is formed in the cover plate corresponding to the spacing rib, and the periphery of the jet impact part is connected to the periphery of the through hole so that the second flow passage is communicated with the first flow passage through the through hole.
  8. 8. The liquid-cooled heat sink of claim 7 wherein the jet impingement section comprises a base plate and a second support layer disposed on a side of the base plate facing the cover plate, the second support layer being provided with the second flow passage, the periphery of the base plate being connected to the periphery of the through hole.
  9. 9. The liquid-cooled heat sink of claim 8 wherein each of the first support ribs has at least a rib portion extending in a first direction, the spacer ribs extending in a second direction and connecting in sequence a plurality of the rib portions, the first direction being perpendicular to the second direction; The second supporting layer comprises a plurality of second supporting ribs which extend along the second direction and are distributed along the first direction at intervals, a flow dividing channel is formed between two adjacent second supporting ribs, a plurality of second supporting ribs are distributed along at least one end of the second direction and the side edge of the bottom plate extending along the first direction at intervals to form a converging channel, and the converging channel is communicated with the flow dividing channel to form the second channel.
  10. 10. The liquid cooling heat sink of claim 9 wherein the base plate and the cover plate are integrally formed or the base plate and the cover plate are welded or adhesively connected; and/or defining the distance between two adjacent first flow passages as the width of the first supporting ribs, wherein the width of the first supporting ribs is less than or equal to 1.8mm; and/or defining the distance between two adjacent first support ribs as the width of the first flow channel, wherein the width of the first flow channel is less than or equal to 2mm; and/or, two ends of the converging flow passage along the first direction are respectively positioned at two opposite sides of the spacing rib along the first direction; And/or defining the distance between two adjacent flow distribution channels as the width of the second supporting ribs, wherein the width of the second supporting ribs is less than or equal to 1.8mm; And/or defining the distance between two adjacent second support ribs as the width of the flow dividing flow passage, wherein the width of the flow dividing flow passage is less than or equal to 2mm; and/or, along a third direction, the spacing ribs and the second supporting ribs are in opposite connection or staggered arrangement, and the first direction, the second direction and the third direction are vertically arranged in pairs; And/or, along the third direction, at least part of the converging flow passage and the spacing ribs are positioned outside the heat source.
  11. 11. The liquid-cooled heat sink of any one of claims 1 to 10, further comprising: a working medium filled in the first flow passage and the second flow passage, and The micro pump is connected to the plate body, the plate body is provided with a first inlet and a first outlet which are communicated with the first runner, the micro pump is provided with a second inlet and a second outlet, the first inlet is communicated with the second outlet, and the first outlet is communicated with the second inlet.
  12. 12. An electronic device comprising the liquid-cooled heat sink according to any one of claims 1 to 11.

Description

Liquid cooling heat dissipation piece and electronic equipment Technical Field The present invention relates to electronic devices, and particularly to a liquid cooling device and an electronic device using the same. Background With the development of AI technology, the power consumption of a chip is continuously increased, and the heat dissipation efficiency has become a core bottleneck for restricting the release of hardware performance. For the consumer electronics field with a small space, active heat dissipation has become the evolution direction of the next generation heat dissipation technology, so that the liquid cooling module has been generated. However, the cooling plates of the traditional liquid cooling modules are designed to have uniform thickness, the flow channels are distributed uniformly, the flow velocity and flow distribution of the cooling liquid in the cooling plates are relatively uniform, the enhanced cooling effect cannot be formed for the heat source concentrated area, and the uniform cooling mode is difficult to quickly lead out a large amount of heat in the core area, so that the local hot spot temperature is easily too high. Therefore, development of a cooling structure capable of further improving the local heat exchange strength is desired. Disclosure of Invention The invention mainly aims to provide a liquid cooling radiating piece and electronic equipment, and aims to solve the problem that the heat exchange coefficient of the existing liquid cooling module is limited. In order to achieve the above object, the present invention provides a liquid cooling heat sink, including: a plate body part in which a first flow passage and a spacing rib are formed, the spacing rib separating the first flow passage so that the first flow passage has a first section and a second section on opposite sides of the separation, and The jet impact part is connected to the plate body part and is arranged corresponding to the spacing ribs, and a second flow passage communicated with the first flow passage is formed in the jet impact part so that the first section is communicated with the second section through the second flow passage; The side of the jet impact part, which is away from the plate body part, is used for being connected with a heat source. In one embodiment, the first flow passage is an annular flow passage, wherein the shape contour of the first flow passage is a circular flow passage, an elliptical flow passage or a polygonal flow passage; and/or the projection area of the jet impact part along the thickness direction of the plate body is larger than or equal to the contact area of the heat source and the jet impact part. In an embodiment, the shape profile of the first flow channel is a square annular flow channel, the first flow channel is provided with a first flow channel section and a second flow channel section which extend along a first direction, the first flow channel section is partitioned along a second direction by the spacing rib, so that the first flow channel section is provided with the first section and the second section which are positioned on two sides of the spacing rib along the first direction, and the first direction and the second direction form an included angle. In an embodiment, the first flow channel includes a plurality of first flow channels, each of the plurality of first flow channels has a first flow channel section and a second flow channel section extending along the first direction, each of the plurality of first flow channel sections and the plurality of second flow channel sections are arranged at intervals along the second direction, the spacing rib cuts off the plurality of first flow channel sections along the second direction, and each of the first sections communicates with the corresponding second section through the second flow channel; The first direction and the second direction are perpendicular to each other. In an embodiment, the projection of the spacing rib along the third direction is located in the projection range of the jet impact part along the third direction; wherein the third direction is the thickness direction of the plate body. In an embodiment, a third flow passage is further formed in the plate body and spaced from the first flow passage, and the third flow passage is an annular flow passage. In an embodiment, the plate body includes a first supporting layer and cover plates disposed on two opposite sides of the first supporting layer, where the first supporting layer includes a plurality of first supporting ribs and the spacer ribs connected to the plurality of first supporting ribs, and the first flow channel is formed between two adjacent first supporting ribs; and a through hole is formed in the cover plate corresponding to the spacing rib, and the periphery of the jet impact part is connected to the periphery of the through hole so that the second flow passage is communicated with the first flow passage through