Gas-liquid two-phase boiling heat exchange case

Abstract

The invention relates to the technical field of heat dissipation of electronic equipment, in particular to a gas-liquid two-phase boiling heat exchange case which comprises a square frame, a cabling rack, an adapter panel and a plurality of slots, and the square frame comprises a front panel, a rear panel, a left side plate and a right side plate; the front panel and the rear panel are internally provided with a main-branch-main flow channel and a left side plate liquid working medium flow channel, and the right side plate is internally provided with a gas working medium flow channel; the plurality of slots are arranged on the opposite surfaces of the front panel and the rear panel in a one-to-one correspondence manner; the wiring rack is arranged between opposite surfaces close to the bottoms of the front panel and the rear panel; and the adapter panel is arranged between the opposite surfaces close to the tops of the front panel and the rear panel. The heat exchanger adopts a gas-liquid two-phase heat dissipation mode, and has the characteristics of high heat exchange efficiency, large total heat exchange amount, low flow resistance, high universality and compact structure.

Description

Technical Field

[0001] The invention relates to the technical field of heat dissipation of electronic equipment, and in particular to a gas-liquid two-phase boiling heat exchange chassis. Background Art

[0002] Several electronic plug-in modules are installed in the electronic chassis in the form of plug-ins. As the electronic plug-in modules continue to develop towards integration, modularization and high performance, the heat consumption of electronic plug-ins and chassis is getting higher and higher. Traditional air cooling / liquid cooling can no longer meet the heat dissipation needs or requires large cooling resources and high heat dissipation costs. In order to solve the heat dissipation problem of high heat consumption electronic plug-ins, two-phase flow high-efficiency heat dissipation means are used to meet the heat dissipation needs.

[0003] At present, chassis generally adopt forced air cooling or single-phase liquid cooling. Chassis adopting air cooling can meet the heat dissipation requirements of a single plug-in with a maximum heat consumption of about 150W and a single chassis with a maximum heat consumption of about 800W under the premise of using a heat sink shell; chassis adopting single-phase liquid cooling can meet the heat dissipation requirements of a single plug-in with a maximum heat consumption of 200W and a single chassis with a maximum heat consumption of about 1500W. As the power of electronic plug-in boards increases, the heat consumption also increases. The heat consumption of a single module can reach 250~300W, and the heat consumption of the entire 6U chassis reaches more than 2500W. Air cooling and single-phase liquid cooling chassis can no longer meet the heat dissipation requirements.

[0004] Therefore, it is necessary to provide a gas-liquid two-phase boiling heat exchange chassis to solve the above problems. Summary of the invention

[0005] The invention provides a gas-liquid two-phase boiling heat exchange chassis to solve the existing problems.

[0006] A gas-liquid two-phase boiling heat exchange chassis of the present invention adopts the following technical solution, including: A square frame, comprising a front panel, a rear panel, a left panel and a right panel; the front panel and the rear panel are both provided with a total-divided-total flow channel, the total-divided-total flow channel is a lower liquid main flow channel and an upper gas main flow channel, the lower liquid main flow channel and the upper gas main flow channel are connected by a plurality of branch flow channels; a liquid working medium flow channel is provided in the left panel, the liquid working medium flow channel connects the lower liquid main flow channels of the front panel and the rear panel; a gas working medium flow channel is provided inside the right panel, the gas working medium flow channel connects the upper gas main flow channels of the front panel and the rear panel; wherein, two fluid connectors are further provided on the front panel, the fluid connectors are respectively connected with the inlet of the lower liquid main flow channel of the front panel and the outlet of the upper gas main flow channel, wherein, the lower liquid main flow channel and the branch flow channel are connected with liquid cooling working medium; A plurality of slots are arranged on opposite surfaces of the front panel and the rear panel in a one-to-one correspondence; A cable tray is disposed between opposite surfaces near the bottom of the front panel and the rear panel; and a transfer panel disposed between opposing surfaces near the top of the front panel and the rear panel.

[0007] Preferably, the two fluid connectors are arranged diagonally on the front panel, wherein the fluid connector connected to the inlet of the lower liquid main flow channel is lower than the fluid connector connected to the inlet of the upper liquid main flow channel.

[0008] Preferably, the diameter of the fluid connector connected to the inlet of the upper liquid main flow channel is larger than the diameter of the fluid connector connected to the inlet of the lower liquid main flow channel.

[0009] Preferably, a plurality of spoiler columns are arranged in the flow branch channel.

[0010] Preferably, a plurality of spoiler columns are staggeredly arranged in each branch channel, and the spoiler columns are drop-shaped spoiler columns.

[0011] Preferably, the slot is divided into a 5HP plug-in insertion area, a 10HP plug-in insertion area, an electronic module direct mounting area and a connector transfer panel area according to function and board width.

[0012] Preferably, the upper liquid main flow channel and the gas working medium flow channel are both right-angled trapezoidal channels, and the right-angled sides of the right-angled trapezoidal channels are parallel to the bottom side of the front panel, wherein the small port of the right-angled trapezoidal channel of the right panel is connected to the large port of the right-angled trapezoidal channel of the rear panel; the large port of the right-angled trapezoidal channel of the right panel is connected to the large port of the right-angled trapezoidal channel of the front panel.

[0013] Preferably, a shock absorber is disposed at each of the four corners of the bottom of the square frame.

[0014] Preferably, O-rings are provided at the flow channel connection opening between the front panel and the left side panel, the flow channel connection opening between the left side panel and the rear panel, and the flow channel connection opening between the rear panel and the right side panel.

[0015] The beneficial effects of the present invention are: 1. The chassis of the present invention adopts gas-liquid phase change cooling technology, that is, the internal flow channels of the front side panels and the rear side panels are total-divided-total flow channels with low flow resistance. Water droplet spoiler columns are arranged in the diverter channels of the total-divided-total flow channels. The cooling medium is heated and vaporized after entering the front side panels. The phase change process utilizes the vaporization of the cooling medium to dissipate heat, with strong heat exchange capacity, small flow demand and better temperature uniformity. The heat dissipation capacity of the entire chassis can reach more than 3000W, and the heat dissipation capacity of each slot can reach 250W~300W.

[0016] 2. The internal flow channels of the front and rear side panels are total-divided-total flow channels with low flow resistance. Water droplet spoiler columns are set in the divided flow channels of the total-divided-total flow channels, which are conducive to the separation and rise of bubbles after the refrigerant phase change, and will not cause gas blockage; after the refrigerant phase change, the volume expands, and the area of ​​the upper gas total flow channel in the flow direction of the gas becomes larger. The diameter of the gas bayonet fluid connector is larger than that of the liquid bayonet fluid connector, which is conducive to gas flow. The internal flow channel of the entire chassis is simple and has low flow resistance 3. The front and rear side panels are provided with slots, which are divided into 5HP plug-in insertion area, 10HP plug-in insertion area, electronic module direct mounting area and connector transfer panel area according to function and board width. They can be used for installation of modules of different sizes and functions, with strong versatility. Secondly, a shock absorber is provided at the bottom of the square frame to meet various vibration usage environments and has good environmental adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of an embodiment of a gas-liquid two-phase boiling heat exchange chassis of the present invention; Figure 2 A gas-liquid two-phase fluid flow diagram inside a gas-liquid two-phase boiling heat exchange chassis of the present invention; Figure 3 A three-dimensional axonometric view of the front side panel of the present invention; Figure 4 This is a diagram of the internal flow passage of the front side plate of the present invention; Figure 5 It is a three-dimensional axonometric view of the rear side panel of the present invention; Figure 6 This is a diagram of the internal flow passage of the rear side plate of the present invention; Figure 7 It is a partial enlarged view of the water droplet spoiler column in the branch channel of the present invention; Figure 8 It is a three-dimensional axonometric view of the left side panel of the present invention; Fig. 9 This is a diagram of the internal flow channel of the left side plate of the present invention; Fig.10 It is a three-dimensional axonometric view of the right side panel of the present invention; Fig.11 This is a diagram of the internal flow channel of the right side plate of the present invention.

[0019] In the figure: 1. front side panel; 2. rear side panel; 3. left side panel; 4. right side panel, 5. O-ring; 6. shock absorber; 7. liquid bayonet fluid connector; 8. gas bayonet fluid connector; 9. handle; 10. wiring rack; 101. adapter panel; 11. first lower interface; 12. first slot; 13. first upper interface; 14. first lower liquid main flow channel; 15. first branch flow channel; 16. first upper gas main flow channel; 17. bubble; 18. spoiler column; 21. second lower interface; 22. second slot; 23. second upper interface; 24. second lower liquid main flow channel; 25. second branch flow channel; 26. second upper gas main flow channel; 31. liquid working fluid flow channel; 41. gas working fluid flow channel. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] An embodiment of a gas-liquid two-phase boiling heat exchange chassis of the present invention is as follows Figure 1 As shown, it includes: a square frame, a wiring rack 10, a transfer panel 101 and a plurality of slots, wherein the square frame includes a front panel 1, a rear panel 2, a left panel 3 and a right panel 4; the front panel 1 and the rear panel 2 are both provided with a total-divided-total flow channel, the total-divided-total flow channel is a lower liquid main flow channel and an upper gas main flow channel, and the lower liquid main flow channel and the upper gas main flow channel are connected by a plurality of branch flow channels; Figure 8 and Fig. 9 As shown, a liquid working medium flow channel 31 is provided in the left side panel 3, and the liquid working medium flow channel 31 connects the lower liquid main flow channel of the front panel 1 and the rear panel 2; Fig.10 and Fig.11 As shown, a gas working medium flow channel 41 is arranged inside the right side panel 4, and the gas working medium flow channel 41 connects the upper gas main flow channels of the front panel 1 and the rear panel 2; wherein, two fluid connectors are also arranged on the front panel 1, and the fluid connectors are respectively connected to the inlet of the lower liquid main flow channel and the outlet of the upper gas main flow channel of the front panel 1, wherein the lower liquid main flow channel and the branch flow channel are connected with cooling working medium, and the highest liquid level of the liquid cooling working medium is the connection end of the branch flow channel and the upper gas main flow channel, that is, the connection end of the branch flow channel and the upper gas main flow channel is below the liquid working medium immersion area, and the upper part is the upper gas main flow channel where the gas working medium gathers after the liquid is heated and undergoes phase change; a plurality of slots are arranged one by one on the opposite surfaces of the front panel 1 and the rear panel 2, as shown in FIG. Figure 3As shown, a first slot 12 is provided on the front panel 1, and a second slot 22 is provided on the rear panel 2. The slots are divided into a 5HP plug-in insertion area, a 10HP plug-in insertion area, an electronic module direct mounting area, and a connector transfer panel area according to function and board width; the wiring rack 10 is provided between opposite surfaces near the bottom of the front panel 1 and the rear panel 2; and the transfer panel 101 is provided between opposite surfaces near the top of the front panel 1 and the rear panel 2.

[0022] like Figure 3 As shown, in this embodiment, the lower liquid main flow channel of the front panel 1 is connected to the inlet of the liquid working medium flow channel 31 of the left panel 3 through the first lower interface 11, and the upper gas main flow channel of the front panel 1 is connected to the outlet of the gas working medium flow channel 41 of the right panel 4 through the first upper interface 13; Figure 5 As shown, the lower liquid main flow channel of the rear panel 2 is connected to the outlet of the liquid working medium flow channel 31 of the left panel 3 through the second lower interface 21, and the upper gas main flow channel of the rear panel 2 is connected to the inlet of the gas working medium flow channel 41 of the right panel 4 through the second upper interface 23.

[0023] like Figure 4 As shown, in this embodiment, the total-divided-total flow channel of the front panel 1 includes a first lower liquid main flow channel 14, a plurality of first branch flow channels 15 and a first upper gas main flow channel 16. The first lower liquid main flow channel 14 is horizontally arranged inside the front panel 1 near the lower end, and the first upper gas main flow channel 16 is arranged inside the front panel 1 near the upper end. The first upper gas main flow channel 16 and the first lower liquid main flow channel 14 are connected through a plurality of first branch flow channels 15 arranged vertically; Figure 6 As shown, in this embodiment, the total-divided-total flow channel of the rear panel 2 includes a second lower liquid main flow channel 24, a plurality of second branch flow channels 25 and a second upper gas main flow channel 26. The second lower liquid main flow channel 24 is horizontally arranged inside the rear panel 2 near the lower end, and the second upper gas main flow channel 26 is arranged inside the rear panel 2 near the upper end. The second upper gas main flow channel 26 and the second lower liquid main flow channel 24 are connected by a plurality of second branch flow channels 25 arranged vertically.

[0024] like Figure 1 As shown, the two fluid connectors are a liquid bayonet fluid connector 7 and a gas bayonet fluid connector 8, which are diagonally arranged on the front panel 1, the liquid bayonet fluid connector 7 is connected to the lower liquid total flow of the front panel 1, and the gas bayonet fluid connector 8 is connected to the upper liquid total flow of the front panel 1, wherein the liquid bayonet fluid connector 7 is lower than the gas bayonet fluid connector 8, and the diameter of the gas bayonet fluid connector 8 is larger than the diameter of the liquid bayonet fluid connector 7.

[0025] like Figure 6 and Figure 7 As shown, a plurality of spoiler columns 18 are arranged in the branch channel, and the plurality of spoiler columns 18 are staggered in each branch channel. In this embodiment, the spoiler columns 18 are teardrop-shaped spoiler columns, which are beneficial to the separation of bubbles 17 after the phase change of the liquid working medium and reduce the rising resistance.

[0026] like Figure 4 , Figure 6 and Fig.11 As shown, the upper liquid main flow channel and the gas working medium flow channel 41 are both right-angled trapezoidal channels, and the right-angled sides of the right-angled trapezoidal channels are parallel to the bottom side of the front panel 1, wherein the small port of the right-angled trapezoidal channel of the right side panel 4 is connected to the large port of the right-angled trapezoidal channel of the rear panel 2; the large port of the right-angled trapezoidal channel of the right side panel 4 is connected to the large port of the right-angled trapezoidal channel of the front panel 1, that is, the upper gas main flow channel in this embodiment adopts a right-angled trapezoidal channel, that is, the area of ​​the flow channel gradually increases, which is conducive to gas flow, and secondly, as Figure 4 and Figure 6 As shown, the first upper gas main flow channel 16 in the front panel 1 is higher than the second upper gas main flow channel 26 in the rear panel 2, that is, the highest liquid level line of the working fluid is the top of the branch channel of the front panel 1, and the lowest liquid level line of the working fluid is the top of the branch channel of the rear panel 1.

[0027] like Figure 1 As shown, a shock absorber 6 is disposed at each of the four corners of the bottom of the square frame, and also includes a handle 9, wherein one handle 9 is disposed on the right side plate 4 and one handle 9 is disposed on the left side plate 3.

[0028] like Figure 8 , Fig. 9 , Fig.10 and Fig.11 As shown, the flow channel connection port between the front panel 1 and the left side panel 3, the flow channel connection port between the left side panel 3 and the rear panel 2, and the flow channel connection port between the rear panel 2 and the right side panel 4 are all provided with installation grooves for O-rings 5, and the O-rings 5 ​​are arranged in the installation grooves.

[0029] How it works When using, Figure 2 , Figure 4 and Figure 6As shown, in this embodiment, the liquid cooling working medium adopts R134a refrigerant. It should be noted that the working medium is stored in a high-pressure tank in a liquid state, and is connected to the liquid bayonet fluid connector 7 through the outlet tank of the high-pressure tank, that is, the working medium enters the chassis from the liquid bayonet fluid connector 7, one way enters the lower liquid main channel of the front panel 1 and enters the branch channel, and absorbs heat inside the branch channel to undergo phase change and gasification, and the other way enters the lower liquid main channel of the rear panel 2 through the liquid working medium flow channel 31 of the left panel 3 and enters the branch channel. The liquid working medium absorbs heat and vaporizes to generate bubbles 17, and the bubbles 17 enter the upper gas main channel from the branch channel, and then, the bubbles 17 in the upper gas main channel of the rear panel 2 flow out from the gas bayonet fluid connector 8 through the gas working medium flow channel 41 of the right panel 4, and the bubbles 17 in the upper gas main channel of the front panel 1 flow out of the chassis through the gas bayonet fluid connector 8, thereby realizing heat exchange.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A gas-liquid two-phase boiling heat exchange chassis, characterized in that: include: A square frame, comprising a front panel (1), a rear panel (2), a left side panel (3) and a right side panel (4); the front panel (1) and the rear panel (2) are both provided with a total-divided-total flow channel, the total-divided-total flow channel being a lower liquid total flow channel and an upper gas total flow channel, the lower liquid total flow channel and the upper gas total flow channel being connected via a plurality of branch flow channels; the left side panel (3) is provided with a liquid working medium flow channel (31), the liquid working medium flow channel (31) connecting the front panel (1) and the rear panel (2) The right side panel (4) is provided with a gas working medium flow channel (41) inside, and the gas working medium flow channel (41) is connected to the upper gas main flow channels of the front panel (1) and the rear panel (2); wherein the front panel (1) is also provided with two fluid connectors, and the fluid connectors are respectively connected to the inlet of the lower liquid main flow channel and the outlet of the upper gas main flow channel of the front panel (1), wherein the lower liquid main flow channel and the branch flow channel are connected with liquid cooling medium; A plurality of slots are arranged one by one on opposite surfaces of the front panel (1) and the rear panel (2); A wiring rack (10) is arranged between opposite surfaces close to the bottom of the front panel (1) and the rear panel (2); and a transfer panel (101) disposed between opposite surfaces close to the top of the front panel (1) and the rear panel (2).

2. A gas-liquid two-phase boiling heat exchange chassis according to claim 1, characterized in that: The two fluid connectors are arranged diagonally on the front panel (1), wherein the fluid connector connected to the inlet of the lower liquid main flow channel is lower than the fluid connector connected to the inlet of the upper liquid main flow channel.

3. A gas-liquid two-phase boiling heat exchange chassis according to claim 2, characterized in that: The diameter of the fluid connector connected to the inlet of the upper liquid main flow channel is larger than the diameter of the fluid connector connected to the inlet of the lower liquid main flow channel.

4. A gas-liquid two-phase boiling heat exchange chassis according to claim 1, characterized in that: A plurality of flow-disturbing columns (18) are arranged in the flow branch channel.

5. A gas-liquid two-phase boiling heat exchange chassis according to claim 4, characterized in that: A plurality of spoiler columns (18) are arranged alternately in each branch flow channel, and the spoiler columns (18) are water drop-shaped spoiler columns.

6. The gas-liquid two-phase boiling heat exchange chassis according to claim 1, characterized in that: The slots are divided into 5HP plug-in insertion area, 10HP plug-in insertion area, electronic module direct mounting area and connector transfer panel area according to function and board width.

7. The gas-liquid two-phase boiling heat exchange chassis according to claim 1, characterized in that: The upper liquid main flow channel and the gas working medium flow channel (41) are both right-angled trapezoidal channels, and the right-angled sides of the right-angled trapezoidal channels are parallel to the bottom side of the front panel (1), wherein the small port of the right-angled trapezoidal channel of the right panel (4) is connected to the large port of the right-angled trapezoidal channel of the rear panel (2); and the large port of the right-angled trapezoidal channel of the right panel (4) is connected to the large port of the right-angled trapezoidal channel of the front panel (1).

8. The gas-liquid two-phase boiling heat exchange chassis according to claim 1, characterized in that: A vibration damper (6) is provided at each of the four corners of the bottom of the square frame.

9. The gas-liquid two-phase boiling heat exchange chassis according to claim 1, characterized in that: O-shaped sealing rings (5) are provided at the flow channel connection opening between the front panel (1) and the left side panel (3), the flow channel connection opening between the left side panel (3) and the rear panel (2), and the flow channel connection opening between the rear panel (2) and the right side panel (4).

10. The gas-liquid two-phase boiling heat exchange chassis according to claim 1, characterized in that: The liquid cooling medium adopts 134a refrigerant.

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