Immersion liquid cooling edge server case

Abstract

The utility model relates to the technical field of servers, in particular to an immersion liquid cooling edge server case, which comprises an outer case and an inner case, the inner case is arranged inside the outer case, and an interval space exists between the outer wall of the inner case and the inner wall of the outer case; an edge server is mounted in the inner box; a liquid outlet is formed in the top of the inner box; the bottom of the inner box is connected with the top ends of a plurality of supporting columns, the bottom ends of the supporting columns are connected with the inner side of the bottom of the outer box, and a liquid inlet is formed in the bottom of the inner box; the liquid inlet, the interior of the inner box, the liquid outlet and the interval space form a circulation channel; a flow speed pump is arranged at the liquid inlet; and cooling liquid is loaded in the circulating channel. According to the utility model, the server loading box body and the cooling box body are integrated into one box body, so that the box body can adapt to flexible application scenes of edge servers.

Description

Technical Field

[0001] The utility model belongs to the technical field of servers, and in particular relates to an immersion liquid-cooled edge server chassis. Background Art

[0002] As the demand for IoT technology increases, more service applications have higher requirements for timeliness. Setting up servers on edge servers near the site can reduce latency and meet requirements faster, so real-time data computing will be transferred from data centers to edge servers. Server liquid cooling has been mass-produced and applied in data centers because of its lower power efficiency, lower noise, and stronger heat dissipation capacity than air cooling. The edge side has higher requirements for noise and power consumption, and low-noise and low-power immersion liquid-cooled edge servers are naturally suitable for some edge scenarios. Immersion liquid cooling is divided into single-phase immersion liquid cooling and phase change immersion liquid cooling. The liquid in single-phase immersion liquid cooling will remain in a liquid state, and the heat will be taken away as the liquid flows to achieve the purpose of heat exchange. The coolant in phase change immersion liquid cooling will vaporize and liquefy at a specific temperature to achieve the purpose of heat exchange.

[0003] The existing immersion liquid cooling server is loaded in a TANK box, and the TANK outputs the liquid to the external cooling tower (box) through a pipeline, and the liquid returns to the TANK box after being cooled. Due to the concentration of servers in the data center, the TANK and cooling tower are both large in size. Usually the TANK is placed indoors and the cooling tower is placed outdoors. The existing immersion liquid cooling liquid has a single thermal conductivity.

[0004] Existing liquid cooling devices are large in size and divided into indoor and outdoor parts, which cannot adapt to the flexible application scenarios of edge servers. Utility Model Content

[0005] In view of the above-mentioned deficiencies in the prior art, the utility model provides an immersion liquid-cooled edge server chassis to solve the above-mentioned technical problems.

[0006] The utility model provides an immersion liquid cooling edge server chassis, comprising:

[0007] An outer box and an inner box, wherein the inner box is placed inside the outer box and there is a spacing space between the outer wall of the inner box and the inner wall of the outer box; an edge server is installed inside the inner box; a liquid outlet is opened at the top of the inner box; the bottom of the inner box is connected to the tops of a plurality of support columns, the bottom ends of the plurality of support columns are connected to the inner side of the bottom of the outer box, and a liquid inlet is opened at the bottom of the inner box; the liquid inlet, the inside of the inner box, the liquid outlet and the spacing space form a circulation channel;

[0008] A flow rate pump is provided at the liquid inlet; and coolant is loaded in the circulation channel.

[0009] In an optional embodiment, a heat sink is attached to the outer wall of the outer box.

[0010] In an optional embodiment, a heat insulation layer is attached to the side wall of the inner box.

[0011] In an optional implementation, a temperature sensor is deployed on the edge server, the temperature sensor is connected to an input end of an analog-to-digital converter, an output end of the analog-to-digital converter is connected to a controller, and the controller is electrically connected to the flow pump.

[0012] In an optional embodiment, a pressure sensor is disposed in the upper region of the inner wall of the outer box, and the pressure sensor is connected to the controller via an analog-to-digital converter.

[0013] In an optional embodiment, the top of the inner box is an open structure.

[0014] In an optional embodiment, the bottom of the inner box is connected to four support columns, and the bottom of the inner box is an opening, a cross-shaped frame is provided at the bottom opening of the inner box, and the cross-shaped frame divides the bottom opening of the inner box into four liquid inlets, and a flow pump is installed at each liquid inlet.

[0015] In an optional embodiment, a filling hole with a sealing cover is provided on the top of the outer box, and the phase change coolant is filled through the filling hole; and a drain hole with a sealing cover is provided on the bottom of the outer box.

[0016] In an optional embodiment, a heat dissipation tower is installed on the top of the outer box, and the heat dissipation tower includes a cooling pipe and cooling fins; the cooling pipe is connected to the internal space of the outer box.

[0017] In an optional embodiment, a plurality of cooling fans are installed on the cooling tower.

[0018] The beneficial effect of the utility model is that the immersion liquid cooling edge server chassis provided by the utility model integrates the loading server box and the cooling box into one box. The reduced volume is more suitable for edge immersion liquid cooling environment. When using immersion liquid, the thermal conductivity of the liquid is large at high temperature and becomes low at low temperature, so the operating temperature range of the immersion liquid cooling server is larger.

[0019] In addition, the utility model has a reliable design principle, a simple structure and a very broad application prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a first schematic structural diagram of an immersion liquid-cooled edge server chassis according to an embodiment of the utility model.

[0022] Figure 2 This is a second schematic structural diagram of an immersion liquid-cooled edge server chassis according to an embodiment of the utility model.

[0023] Figure 3 This is a third schematic structural diagram of an immersion liquid-cooled edge server chassis according to an embodiment of the utility model.

[0024] Figure 4 It is an operation flow chart of an immersion liquid-cooled edge server chassis according to an embodiment of the utility model.

[0025] Among them, 1. outer box; 2. inner box; 3. flow pump; 4. edge server; 5. heat sink; 6. heat tower; 7. cooling fan. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the technical solutions in the present invention, 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 them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0028] For details, please refer to Figure 1 , the Immersion Liquid Cooled Edge Server 4 chassis includes:

[0029] An outer box 1 and an inner box 2, the inner box 2 is placed inside the outer box 1 and there is a spacing space between the outer wall of the inner box 2 and the inner wall of the outer box 1; an edge server 4 is installed inside the inner box 2; a liquid outlet is provided at the top of the inner box 2; the bottom of the inner box 2 is connected to the top ends of a plurality of support columns, the bottom ends of the plurality of support columns are connected to the inner side of the bottom of the outer box 1, and a liquid inlet is provided at the bottom of the inner box 2; the liquid inlet, the inside of the inner box 2, the liquid outlet and the spacing space form a circulation channel; a flow rate pump 3 is provided at the liquid inlet; and the circulation channel is loaded with coolant.

[0030] The chassis is loaded with coolant, servers and flow pump 3. The server can be inserted from the top of the chassis for installation. The dashed arrows show the direction of liquid flow.

[0031] The outer box 1 is provided with heat sinks 5 to accelerate heat dissipation of the coolant in contact therewith. Specifically, the outer side walls and the outer side top surfaces of the outer box 1 are both provided with heat sinks 5 .

[0032] The inner and outer boxes 1 only have through holes at the bottom and top parts for liquid to flow through. Specifically, the top of the inner box 2 is an open structure. The bottom of the inner box 2 is connected to four support columns, and the bottom of the inner box 2 is an opening. A cross-shaped frame is provided at the bottom opening of the inner box 2. The cross-shaped frame divides the bottom opening of the inner box 2 into four liquid inlets, and a flow rate pump 3 is installed at each liquid inlet. A filling hole with a sealing cover is provided at the top of the outer box 1, and the phase change coolant is filled through the filling hole; a discharge hole with a sealing cover is provided at the bottom of the outer box 1.

[0033] There is no opening in the side wall of the inner box 2, so liquid cannot flow through. The side wall of the inner box 2 is thicker and insulated, or an insulating layer is attached to the side wall of the inner box 2 to avoid heat exchange.

[0034] In addition, a temperature sensor is deployed on the edge server 4, the temperature sensor is connected to the input end of the analog-to-digital converter, the output end of the analog-to-digital converter is connected to the controller, and the controller is electrically connected to the flow pump 3. When working, when the temperature sensor built into the core area of ​​the edge server 4 detects that the temperature reaches the set temperature, the flow pump 3 is controlled to accelerate the work in a corresponding proportion according to the threshold temperature reached by the detected temperature. The liquid flows upward in the inner box 2 through the flow pump 3, and circulates downward between the inner and outer boxes 1. The liquid cools the server in the inner box 2, takes away the heat and flows upward to the side wall of the outer box 1, cools down through the heat sink 5 on the side wall of the outer box 1, and returns to the flow pump 3 downward.

[0035] Since the coolant is a phase-change coolant, i.e., a liquid with a variable thermal conductivity, the amount of coolant in the chassis needs to be controlled, so a pressure sensor is deployed in the upper area of ​​the inner wall of the outer box 1, and the pressure sensor is connected to the controller via an analog-to-digital converter. By detecting the pressure of the coolant on the inner wall of the outer box 1, the detected pressure is compared with a preset standard pressure range, and the amount of coolant is controlled within the standard range by controlling the pressure.

[0036] In order to improve the heat dissipation efficiency, different specifications of heat dissipation components can be set according to the ambient temperature to accelerate the liquid heat exchange. Figure 2 A heat dissipation tower 6 is installed on the top of the outer box 1. The heat dissipation tower 6 includes a cooling pipe and a heat dissipation fin; the cooling pipe is connected to the internal space of the outer box 1. The cooling pipe is coiled in the heat dissipation tower 6, and the coolant inside the chassis can enter the heat dissipation tower 6 through the cooling pipe, fully exchange heat with the heat dissipation fins, increase the heat dissipation area, and improve the heat dissipation efficiency.

[0037] Please refer to Figure 3 , multiple cooling fans 7 are installed on the cooling tower 6. When the cooling demand is high, the cooling fans 7 are started to improve the cooling efficiency.

[0038] The flow rate of the flow pump is controlled by the controller based on the temperature collected by the temperature sensor. The specific control process is as follows: Figure 4 As shown:

[0039] Three thresholds are preset: threshold 1 < threshold 2 < threshold 3, and the speed 1 (30%) of the flow pump corresponding to threshold 1 is set, and the speed 2 (60%) of the flow pump corresponding to threshold 2 is set.

[0040] The detected actual temperature of the edge server is compared with threshold 1, threshold 2, and threshold 3;

[0041] If the actual temperature does not reach threshold 1, the flow rate pump will not be started;

[0042] If the actual temperature reaches threshold 1 and does not reach threshold 2, the flow rate pump is controlled to rotate at 30% of the maximum speed;

[0043] If the actual temperature reaches threshold 2 and does not reach threshold 3, the flow rate pump is controlled to rotate at 60% of the maximum speed;

[0044] If the actual temperature reaches threshold 3, the flow rate pump is controlled to rotate at the maximum speed.

[0045] In standby or low power consumption situations, if the temperature does not reach the threshold, there is no need to work. When the corresponding temperature threshold is reached, the flow pump works according to the set temperature to accelerate the circulation and heat dissipation.

[0046] Although the present invention is described in detail by referring to the accompanying drawings and in combination with the preferred embodiments, the present invention is not limited thereto. Without departing from the spirit and essence of the present invention, a person skilled in the art may make various equivalent modifications or substitutions to the embodiments of the present invention, and these modifications or substitutions shall be within the scope of the present invention. Any person skilled in the art who is familiar with the present technical field may easily think of changes or substitutions within the technical scope disclosed in the present invention, and these shall be within the scope of protection of the present invention.

Claims

1. An immersion liquid-cooled edge server chassis, characterized in that: include: An outer box and an inner box, wherein the inner box is placed inside the outer box and there is a spacing space between the outer wall of the inner box and the inner wall of the outer box; an edge server is installed inside the inner box; a liquid outlet is opened at the top of the inner box; the bottom of the inner box is connected to the tops of a plurality of support columns, the bottom ends of the plurality of support columns are connected to the inner side of the bottom of the outer box, and a liquid inlet is opened at the bottom of the inner box; the liquid inlet, the inside of the inner box, the liquid outlet and the spacing space form a circulation channel; A flow rate pump is provided at the liquid inlet; and coolant is loaded in the circulation channel.

2. The immersion liquid-cooled edge server chassis according to claim 1, characterized in that: The outer wall of the outer box is provided with a heat sink.

3. The immersion liquid-cooled edge server chassis according to claim 1, characterized in that: A heat insulation layer is attached to the side wall of the inner box.

4. The immersion liquid-cooled edge server chassis according to claim 1, characterized in that: A temperature sensor is deployed on the edge server, the temperature sensor is connected to the input end of an analog-to-digital converter, the output end of the analog-to-digital converter is connected to a controller, and the controller is electrically connected to the flow pump.

5. The immersion liquid-cooled edge server chassis according to claim 4, characterized in that: A pressure sensor is disposed in the upper region of the inner wall of the outer box, and the pressure sensor is connected to the controller via an analog-to-digital converter.

6. The immersion liquid-cooled edge server chassis according to claim 1, characterized in that: The top of the inner box is an open structure.

7. The immersion liquid-cooled edge server chassis according to claim 1, characterized in that: The bottom of the inner box is connected to four support columns, and the bottom of the inner box is an opening. A cross-shaped frame is provided at the bottom opening of the inner box. The cross-shaped frame divides the bottom opening of the inner box into four liquid inlets, and a flow rate pump is installed at each liquid inlet.

8. The immersion liquid-cooled edge server chassis according to claim 1, characterized in that: The top of the outer box is provided with a filling hole with a sealing cover, through which the phase change coolant is filled; the bottom of the outer box is provided with a drain hole with a sealing cover.

9. The immersion liquid-cooled edge server chassis according to claim 1, characterized in that: A heat dissipation tower is installed on the top of the outer box, and the heat dissipation tower includes a cooling pipe and cooling fins; the cooling pipe is connected to the inner space of the outer box.

10. The immersion liquid-cooled edge server chassis according to claim 9, characterized in that: A plurality of cooling fans are installed on the cooling tower.

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