Search

CN-122002766-A - Liquid runner structure based on immersed liquid cooling rack

CN122002766ACN 122002766 ACN122002766 ACN 122002766ACN-122002766-A

Abstract

The invention discloses a liquid flow passage structure based on an immersed liquid cooling cabinet, and aims to provide a liquid flow passage structure based on an immersed liquid cooling cabinet, which can effectively reduce the flow velocity difference of fluid flowing into the liquid cooling cavity of the cabinet so as to balance the flow velocity of ascending fluid at each part in the liquid cooling cavity, thereby effectively improving the problem of uneven temperature of the liquid cooling cavity on each same height layer and improving the heat dissipation uniformity. The liquid cooling device comprises a liquid cooling cavity, a liquid inlet cavity and a backflow cavity which are arranged in a cabinet, wherein the liquid inlet cavity and the backflow cavity are arranged on two opposite sides of the liquid cooling cavity, the liquid inlet cavity is arranged at the bottom of the cabinet, a liquid inlet is arranged at the bottom of the liquid inlet cavity, a liquid outlet is arranged at the backflow cavity, a lower overflow plate is arranged at the bottom of the liquid cooling cavity, a lower distribution cavity is formed between the lower overflow plate and the bottom surface of the backflow cavity, a plurality of communication ports are arranged between the liquid inlet cavity and the lower distribution cavity, a plurality of lower overflow holes distributed in an array are arranged on the lower overflow plate, and the backflow ports are communicated with the upper part of the liquid cooling cavity and the upper part of the backflow cavity.

Inventors

  • ZHANG KAILI

Assignees

  • 浙江先导热电科技股份有限公司

Dates

Publication Date
20260508
Application Date
20251209

Claims (10)

  1. 1. Liquid runner structure based on submergence formula liquid cooling rack, characterized by includes: The liquid cooling cavity, the liquid inlet cavity and the backflow cavity are arranged in the cabinet, the liquid inlet cavity and the backflow cavity are positioned at two opposite sides of the liquid cooling cavity, the liquid inlet cavity is positioned at the bottom of the cabinet, the liquid inlet is arranged at the bottom of the liquid inlet cavity, and the liquid outlet is arranged at the backflow cavity; the lower overflow plate is arranged at the bottom of the liquid cooling cavity, a lower distribution cavity is formed between the lower overflow plate and the bottom surface of the backflow cavity, a plurality of communication ports are arranged between the liquid inlet cavity and the lower distribution cavity, and a plurality of lower overflow holes distributed in an array are formed in the lower overflow plate; And the reflux port is communicated with the upper part of the liquid cooling cavity and the upper part of the reflux cavity.
  2. 2. The liquid flow channel structure based on the immersed liquid cooling cabinet as claimed in claim 1, wherein the lower overflow holes on the lower overflow plate are arranged in a plurality of rows from the liquid inlet cavity to the reflux cavity, the areas of the lower overflow holes in the same row are the same, and the areas of the lower overflow holes in each row from the liquid inlet cavity to the reflux cavity are gradually increased.
  3. 3. The liquid flow channel structure based on the immersed liquid cooling cabinet as claimed in claim 1, wherein the lower overflow holes on the lower overflow plate are arranged in a plurality of rows from the liquid inlet cavity to the reflux cavity, the areas of the lower overflow holes in the same row are the same, the flow channel lengths of the lower overflow holes in the same row are the same, and the flow channel lengths of the lower overflow holes in each row from the liquid inlet cavity to the reflux cavity are gradually reduced.
  4. 4. A liquid flow channel structure based on an immersed liquid cooling cabinet as claimed in claim 1,2 or 3, further comprising an upper overflow plate, wherein the upper overflow plate is arranged at the top of the liquid cooling cavity, the liquid cooling cavity above the upper overflow plate forms an upper distribution cavity, a plurality of upper overflow holes distributed in an array are arranged on the upper overflow plate, and the backflow port is communicated with the upper distribution cavity.
  5. 5. The liquid flow channel structure based on the immersed liquid cooling cabinet as claimed in claim 4, wherein the upper overflow holes on the upper overflow plate are arranged in a plurality of rows from the liquid inlet cavity to the reflux cavity, the areas of the upper overflow holes in the same row are the same, and the areas of the upper overflow holes in each row from the liquid inlet cavity to the reflux cavity are gradually reduced.
  6. 6. The liquid runner structure based on the immersed liquid cooling cabinet as claimed in claim 4, wherein the upper overflow holes on the upper overflow plate are arranged in a plurality of rows from the liquid inlet cavity to the reflux cavity, the areas of the upper overflow holes in the same row are the same, the runner lengths of the upper overflow holes in the same row are the same, and the runner lengths of the upper overflow holes in each row from the liquid inlet cavity to the reflux cavity are gradually increased.
  7. 7. A liquid flow passage structure based on an immersed liquid cooling cabinet as claimed in claim 1,2 or 3, wherein a plurality of annular partition plates are arranged in the lower distribution cavity to divide the lower distribution cavity into a plurality of distribution flow passages, and each annular partition plate is provided with a plurality of interaction ports which are communicated with two adjacent distribution flow passages.
  8. 8. A liquid flow path structure based on an immersed liquid cooling cabinet as claimed in claim 1,2 or 3, wherein the aperture of the lower overflow hole is 13-17mm, and the flow rate of the liquid flowing through the lower overflow hole is set to be 1.5-2m/s.
  9. 9. A liquid flow channel structure based on an immersed liquid cooling cabinet as claimed in claim 1, 2 or 3, wherein a filter screen or a filter material layer is arranged at the upper part of the reflux cavity.
  10. 10. The liquid runner structure based on immersed liquid cooling cabinet according to claim 1,2 or 3, further comprising a detection cavity arranged in the cabinet and above the liquid inlet cavity, wherein the detection cavity extends from bottom to top, a plurality of communication holes which are distributed from bottom to top in sequence are arranged between the detection cavity and the liquid cooling cavity, and a sensor for detecting the temperature of cooling liquid is arranged in the detection cavity.

Description

Liquid runner structure based on immersed liquid cooling rack Technical Field The invention relates to the technical field of immersed liquid cooling, in particular to a liquid flow channel structure based on an immersed liquid cooling cabinet. Background The liquid inlet and outlet in the flow channel design of the traditional immersed liquid cooling cabinet are consistent in height, or one side is provided with a liquid inlet and a liquid outlet, and the other side is provided with a liquid outlet, so that the problem of uneven temperature of each part of the whole cavity is often caused. For example, chinese patent publication No. CN116666826a, the name of the invention is an immersed liquid-cooled battery pack structure, which includes a housing, a battery cell busbar, an end plate, an inlet pipe, an outlet pipe, an upper cover, a cooling liquid splitting plate, an inlet bus plate, and an outlet bus plate, wherein an insulating cooling liquid enters the inlet bus plate from the inlet pipe to reach the inlet cavity, enters the cooling liquid splitting plate after being buffered by the bus, enters a first flow channel formed by a gap of the battery cell through an opening of the cooling liquid splitting plate, flows through a second flow channel, a third flow channel, and a fourth flow channel, finally flows together to the outlet bus plate, flows into the outlet cavity through an outlet hole on the outlet bus plate, and flows out through the outlet pipe. The immersed liquid cooling battery pack structure of the application has the problem that the flow velocity of the cooling liquid in the cavity is uneven, so that the temperature of each part of the whole cavity is uneven. Furthermore, the flow channel design of some existing immersed liquid cooling cabinets optimizes the fluid direction, adopts a low-inlet and high-outlet mode, so that heat generated by a load can be sequentially carried out by fluid from bottom to top, and a good heat dissipation effect is achieved. The heat dissipation power is improved to mean that the capacity of the liquid cooling equipment is increased, the capacity of the immersed liquid cooling equipment cabinet is gradually increased, the transverse length of the cabinet cavity is increased, the transverse distance of the liquid inlet and the liquid outlet is increased, the flow velocity of fluid flowing into the cabinet cavity is uneven in the transverse direction, the flow velocity of ascending fluid of each part of the whole cavity in the transverse direction is uneven, and the problem of uneven temperature of the whole cavity on each same height layer is caused. Disclosure of Invention The invention aims to provide a liquid flow channel structure based on an immersed liquid cooling cabinet, which can effectively reduce the flow velocity difference of fluid flowing into the liquid cooling cavity of the cabinet so as to balance the flow velocity of rising fluid at each part in the liquid cooling cavity, thereby effectively improving the problem of uneven temperature of the liquid cooling cavity on each same height layer and improving the heat dissipation uniformity. The technical scheme of the invention is as follows: A liquid flow path structure based on an immersed liquid cooled cabinet, comprising: The liquid cooling cavity, the liquid inlet cavity and the backflow cavity are arranged in the cabinet, the liquid inlet cavity and the backflow cavity are positioned at two opposite sides of the liquid cooling cavity, the liquid inlet cavity is positioned at the bottom of the cabinet, the liquid inlet is arranged at the bottom of the liquid inlet cavity, and the liquid outlet is arranged at the backflow cavity; the lower overflow plate is arranged at the bottom of the liquid cooling cavity, a lower distribution cavity is formed between the lower overflow plate and the bottom surface of the backflow cavity, a plurality of communication ports are arranged between the liquid inlet cavity and the lower distribution cavity, and a plurality of lower overflow holes distributed in an array are formed in the lower overflow plate; And the reflux port is communicated with the upper part of the liquid cooling cavity and the upper part of the reflux cavity. The liquid flow passage structure based on the immersed liquid cooling cabinet has the following specific work, Firstly, the cooling liquid flows into the liquid inlet cavity from the liquid inlet, and the cooling liquid flows in the liquid inlet cavity for one-time distribution, so that the cooling liquid can flow into the lower distribution cavity more uniformly through the communication ports. Then, the cooling liquid in the liquid inlet cavity flows into the lower distribution cavity through the communication ports, the cooling liquid flows in the space of the lower distribution cavity for secondary distribution, and after the cooling liquid fills the lower distribution cavity, the cooling liquid starts to flow into the liquid cooli