WO2018072369A1

WO2018072369A1 - Liquid distribution system for direct-contact type cooling cabinet

Info

Publication number: WO2018072369A1
Application number: PCT/CN2017/074709
Authority: WO
Inventors: 王伟
Original assignee: 广东合一新材料研究院有限公司
Priority date: 2016-10-17
Filing date: 2017-02-24
Publication date: 2018-04-26
Also published as: CN106455433A; CN106455433B

Abstract

The present invention provides a liquid distribution system for a direct-contact type cooling cabinet. The system comprises: a plurality of liquid distribution sprinkler boards. The liquid-distribution sprinkler boards are sequentially arranged, in parallel and at intervals from top to bottom, in a cabinet main body. A liquid storage tank is mounted at a bottom portion of the cabinet main body, and a heat dissipation member is mounted inside of the cabinet main body or outside of a control room. The liquid storage tank is connected to the heat dissipation member via a pump and a connecting pipeline, and each of the liquid-distribution sprinkler boards is connected to the connecting pipeline via a pipe. A filter is mounted on a pipe to which the pump and the liquid storage tank are connected. A dryer is mounted at an inlet to which the heat dissipation member and the connecting pipeline are connected. A top portion of the heat dissipation member has mounted thereon a fan used for dissipating heat via thermal convection. The liquid-distribution system for a direct-contact type cooling cabinet can be used to directly sprinkle a working fluid onto a surface of a heat-generating element, and effectively remove the heat of a server via direct contact, thus significantly increasing the heat dissipation efficiency; a manner of cooling by sprinkling is also used, which requires less working fluid in comparison with cooling by direct immersion, thus reducing the weight of the cabinet and facilitating the installation and transportation thereof.

Description

Liquid distribution system for direct contact cooling cabinet

Technical field

The invention belongs to the technical field of heat exchange equipment, and in particular relates to a liquid distribution system of a direct contact type cooling cabinet.

Background technique

Today's servers are basically designed based on air cooling. These servers usually use a front and rear air venting case to house components such as the motherboard, CPU, memory, hard disk, network hardware, etc., driven by one or more fans. Air around the server enters the interior of the housing to dissipate heat. In order to effectively dissipate the server, the temperature of the high-density server room needs to be very low. Therefore, the cooling power consumption of the data center computer room accounts for more than 50% of the total power consumption of the computer room. The energy consumption is extremely high, and it has become increasingly inconsistent with the current energy-saving emission reduction. Development requirements.

In order to more effectively dissipate the server, the traditional direct contact cooling technology uses the whole server to be immersed in mineral oil with low activity and non-conduction. Through the absorption and transmission of mineral oil, the heat is continued through the oil cooling system. Efficient method of dissipating. However, since the server needs to be immersed in mineral oil as a whole, the amount of mineral oil required is large, the overall weight of the cabinet is heavy, and the installation and transportation costs are increased, and the system structure of direct contact cooling needs to be further improved.

Summary of the invention

The invention solves the deficiencies of the prior art, and proposes a liquid distribution system of a direct contact cooling cabinet. The liquid distribution system of the direct contact cooling cabinet can directly spray the liquid working medium onto the surface of the heating element, and is effective through direct contact. The heat of the server is taken away, which significantly improves the heat dissipation efficiency. At the same time, the spray cooling method is adopted, which requires less liquid quality than the direct immersion cooling, the cabinet weight is reduced, the installation and transportation are convenient, and the liquid spray system can be conveniently used. Perform installation and repair.

To achieve the above solution, the present invention provides a liquid contact system for a direct contact cooling cabinet, comprising: a cloth spray plate, a liquid storage tank, a pump, a connecting pipe, a filter, a dryer, a radiator, and a cabinet body. The plurality of liquid spray panels are installed in the cabinet body at a time interval from top to bottom, and the liquid storage tank is installed at the bottom of the cabinet body, and the heat sink is installed in the cabinet body to be separately cooled or installed outside the machine room for centralized heat dissipation. The liquid storage tank is connected to the radiator through the pump and the connecting pipeline, and each of the liquid spray panels is connected to the connecting pipeline through the pipeline, the filter is installed on the pipeline connecting the pump and the liquid storage tank, and the dryer is installed on the radiator. At the inlet connected to the connecting pipe, the liquid discharging plate comprises a shower plate body, a working fluid inlet pipe and a cloth liquid spray hole, wherein the spray plate body is a hollow sealing plate, one or more working fluid inlet pipes are installed at a side end of the spray plate body, and a plurality of cloth liquid spray holes are disposed at the spray On the bottom plate of the shower body, a fan for convection heat is mounted on the top of the heat sink.

In the above technical solution, the cloth liquid system relies on the traditional sealed cabinet, and the liquid working medium is directly contacted with the heating elements and equipment inside the cabinet by spraying, and the heat inside the cabinet is directly taken out by the liquid working medium to realize cooling and cooling. the goal of. When the system works, the liquid working fluid is first added to the liquid storage tank, pumped into the connecting pipeline through the pressure of the pump, and then flows out through the bottom pore of the cloth spray plate to directly contact the heating element; the liquid worker heated by the heating element The quality is gathered to a certain extent on the server, and then passed through the cloth spray plate, and finally concentrated to the liquid storage tank at the bottom of the cabinet; after filtering through the filter, the liquid in the liquid storage tank is pumped into the radiator again to cool down, and then enters the spray. The leaching pipeline cools the heating element, so that the convection heat dissipation of the fan can accelerate the heat dissipation speed of the liquid working fluid in the radiator, thereby achieving rapid cooling of the liquid working medium.

Preferably, the cloth spray plate comprises a shower plate body, a working medium inlet pipe and a cloth liquid spray hole, wherein the spray plate body is a hollow sealing plate, and one or more working fluid inlet pipes are installed in the spray. A side end of the plate body, a plurality of cloth liquid spray holes are disposed on the bottom plate of the shower plate body.

Preferably, a spray head is mounted on the partial liquid spray nozzle.

Preferably, the top plate of the shower plate body is provided with a recovery tank, and the recovery tank is connected to the liquid storage tank. The liquid working fluid sprayed on the upper layer can be recovered into the liquid storage tank through the recovery tank provided on the top plate of the lower spray plate body to realize the circulation of the liquid working medium.

Preferably, the diameters of the cloth liquid spray holes installed on the bottom plate of the shower plate body are not completely the same, and the diameter of the cloth liquid spray holes is between 1 mm and 5 mm. The liquid spray holes of different apertures are beneficial for spraying different amounts of liquid working medium for different heating elements to achieve targeted spraying.

Preferably, the spray shapes of the spray heads mounted on the bottom plate of the shower plate body are not completely the same, and the spray shapes of the spray heads are fan-shaped, tapered, square or column-shaped.

In the above technical solution, when the heat generated by the heating element inside the cabinet is uniform, the liquid spray hole is directly sprayed; when the heat generated by the heat generating element is relatively concentrated, the nozzle is installed in the spray hole above the heat generating element, Adjusting the shape of the spray to dissipate heat from the heating element, so as to effectively carry away the heat, and the rest of the part is still sprayed by the spray hole; when the overall pressure of the heating element is small, the spray head can be completely installed to realize the flexible spray.

Preferably, the liquid storage tank is a square metal or plastic container with an open upper end.

The beneficial effects of the technical solution of the present invention are as follows:

1) Through the liquid-discharging system of the direct contact cooling cabinet, the heat transfer medium is sprayed onto the surface of the heating element or equipment, and directly contacts with the heating element, which can reduce the multi-layer thermal resistance in the middle, and the heat transfer efficiency is obviously improved. Compared with the traditional liquid working medium soaking heat transfer, the amount of liquid used for spray heat dissipation is greatly reduced, the weight of the cabinet is reduced, and the installation and transportation are convenient;

2) The liquid distribution system of the direct contact cooling cabinet realizes the recycling of the spray liquid working medium and reduces the operation cost;

3) The liquid distribution system of the direct contact cooling cabinet is used in the cabinet and the machine room, and the temperature requirement of the equipment room is reduced, which greatly reduces the utilization rate of the air conditioner in the equipment room, and helps to improve the comprehensive energy consumption ratio of the equipment room.

DRAWINGS

Figure 1 is a schematic view showing the structure of the system of the present invention.

Figure 2 is a schematic view showing the structure connection of the cloth liquid spray plate, the liquid storage tank, the pump and the connecting pipe in the present invention;

Fig. 3 is a schematic view showing the structure of a cloth spray plate in the present invention.

Figure 4 is a schematic view showing the structure of a head according to an embodiment of the present invention.

In the figure: 1, cloth spray plate; 2, liquid storage tank; 3, pump; 4, connecting pipeline; 5, filter; 6, dryer; 7, fan; 8, radiator; 9, cabinet body ; 11, working fluid inlet pipe; 12, cloth liquid spray hole; 13, nozzle; 14, spray plate body.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art without creative efforts are within the scope of the present invention.

Embodiment: A liquid distribution system for a direct contact cooling cabinet.

As shown in FIG. 1 to FIG. 3, a liquid distribution system of a direct contact cooling cabinet includes: a liquid spray panel 1, a liquid storage tank 2, a pump 3, a connecting pipeline 4, a filter 5, and a dryer 6 , radiator 8 and cabinet body 9; multiple pieces of liquid spray board 1 The liquid storage tank 2 is installed in the cabinet body 9 at the bottom of the cabinet body 9 from the top to the bottom. The liquid storage tank 2 is installed in the bottom of the cabinet body 9 to be separately dissipated or installed outside the equipment room for centralized heat dissipation. The system includes a plurality of cabinet bodies 9, and the radiators 8 can also be installed between the plurality of cabinet bodies 9 for concentrated heat dissipation. The liquid storage tanks 2 are connected to the radiators 8 through the pump 3 and the connecting lines 4, and each of the liquids is disposed. The shower plates 1 are each connected to a connecting line 4 through a pipe, the filter 5 is installed in a pipe to which the pump 3 is connected to the liquid storage tank 2, and the dryer 6 is installed at an inlet where the radiator 8 and the connecting pipe 4 are connected.

The working principle of the liquid-discharging system of the direct contact cooling cabinet is: relying on the traditional sealed cabinet, the liquid working medium is directly contacted with the heating elements and equipment inside the cabinet through the spray, and the internal heat of the cabinet is directly brought by the liquid working medium. Out, to achieve the purpose of cooling and cooling. The spray liquid working medium in the system is required to have higher specific heat, lower viscosity coefficient, good electrical insulation performance and stable chemical property, so it is preferably dimethicone or benzyl silicone oil. When the system is working, the liquid working medium is first added to the liquid storage tank 2, pumped into the connecting line 4 by the pressure of the pump 3, and then flows out through the bottom pores of the liquid discharging plate 1, and is in direct contact with the heating element; After the liquid working medium is collected to a certain extent on the server, the liquid spray plate 1 is finally concentrated to the liquid storage tank 2 at the bottom of the cabinet; after being filtered by the filter 5, the liquid in the liquid storage tank 2 is pumped into the radiator again. 8 to cool down, and then enter the spray line to cool the heating element, and so on.

Referring to FIG. 2 to FIG. 4 , in order to better ensure the uniformity of the spray, the following liquid spray panel 1 is adopted, and the liquid spray panel 1 includes a shower plate body 14 and a working fluid inlet pipe 11 . The liquid spray hole 12 and the spray head 13 are hollow sealing plates, and one or more working fluid inlet pipes 11 are installed at the side ends of the shower plate body 14, and a plurality of liquid spray holes 12 is disposed on the bottom plate of the shower plate body 14, the diameter of the cloth liquid spray hole 12 is not completely the same, and the diameter of the cloth liquid spray hole 12 is set between 1 mm and 5 mm, due to the liquid spray of different apertures. The hole is beneficial for spraying different amounts of liquid working medium for different heating elements, and can achieve targeted spraying. At the same time, the spray heads 13 are mounted on the partial liquid spray holes 12, and the spray shapes of the spray heads 13 are not completely the same, and the shape is a fan shape, a cone shape, a square shape or a column flow shape. Through the above-mentioned cloth liquid spray panel 1, when the heat generation element inside the cabinet main body 9 generates heat uniformly, the cloth liquid spray hole 12 is directly sprayed; when the heat generation element is relatively concentrated, the spray on the heat generating element is sprayed. The nozzle 12 is installed in the hole 12, and the heat-generating component is concentratedly dissipated by adjusting the shape of the spray, thereby effectively carrying away the heat, and the rest of the portion is still sprayed by the cloth liquid spray hole 12; when the whole heat-generating component is under a small pressure, it can be all The spray nozzle 13 is installed to achieve a flexible spray and a different spray shape is selected to better achieve a targeted spray.

In the embodiment, the top plate of the shower plate body 14 is provided with a recovery tank, and the recovery tank is connected to the liquid storage tank 2. The liquid working medium sprayed on the upper layer can be recovered into the liquid storage tank 2 through the recovery tank provided on the top plate of the lower spray plate body 14 to realize the recycling of the liquid working medium.

Referring to Fig. 1, a fan 7 for convection heat dissipation is mounted on the top of the heat sink 8. Convection through fan 7 The heat dissipation function can accelerate the heat dissipation speed of the liquid working medium in the radiator 8 and realize the rapid cooling of the liquid working medium.

In this embodiment, the liquid storage tank 2 is a square metal container having an open upper end. The square metal container is easy to process and easy to install.

Compared with the conventional air heat dissipation, since the specific heat and density of the liquid working medium are higher than the air, when the direct contact with the heat dissipating component, the volume of liquid required to dissipate the same heat is much smaller than the amount of air required. For this direct contact cooling cabinet, the energy consumption is only concentrated on the liquid pump and the cooling fan. Compared with the computer room air conditioner required for the air cooling mode, the power consumption is greatly reduced, and the comprehensive energy consumption ratio is greatly improved. Compared with direct immersion cooling of liquid working fluid, spray cooling can reduce the amount of liquid working fluid, reduce the weight of the cabinet, and facilitate installation and transportation.

The above is a preferred embodiment of the present invention, but the present invention is not limited to the contents disclosed in the embodiment and the drawings, and therefore, equivalents or modifications made without departing from the spirit of the disclosure of the present invention are It falls within the scope of protection of the present invention.

Claims

A liquid contact system for a direct contact cooling cabinet, characterized by: a cloth liquid spray plate, a liquid storage tank, a pump, a connecting pipe, a filter, a dryer, a radiator and a cabinet main body; The drip plate is installed in the cabinet main body at a time interval from top to bottom. The liquid storage tank is installed at the bottom of the cabinet main body, and the radiator is installed inside the cabinet main body or outside the equipment room. The liquid storage tank is connected to the radiator through the pump and the connecting pipeline. Each of the cloth spray panels is connected to the connecting pipe through a pipe, the filter is installed on the pipe connected to the pump and the liquid storage tank, and the dryer is installed at the inlet of the radiator and the connecting pipe; the cloth liquid The spray plate comprises a spray plate body, a working medium inlet pipe and a cloth liquid spray hole, wherein the spray plate body is a hollow sealing plate, and one or more working fluid inlet pipes are installed at a side end of the spray plate body, A cloth liquid spray hole is disposed on the bottom plate of the shower plate body, and a fan for convection heat is mounted on the top of the heat sink.
The liquid distribution system of a direct contact type cooling cabinet according to claim 1, wherein a nozzle is mounted on the portion of the liquid spray nozzle.
The liquid distribution system of a direct contact type cooling cabinet according to claim 1, wherein a collecting tank is disposed on the top plate of the shower plate body, and the collecting tank is connected to the liquid storage tank.
The liquid distribution system of a direct contact type cooling cabinet according to claim 1, wherein the diameter of the liquid spray nozzles mounted on the bottom plate of the spray plate body is not completely the same, and the liquid discharge holes of the cloth are provided. The diameter is between 1mm and 5mm.
The liquid distribution system of a direct contact type cooling cabinet according to claim 1, wherein the spray shape of the spray head mounted on the liquid spray nozzle is not completely the same, and the spray shape of the spray head is a fan shape and a cone shape. Shape, square or column flow.
The liquid distribution system of a direct contact cooling cabinet according to claim 1, wherein the liquid storage tank is a square metal or plastic container with an open upper end.