CN106659083A - Cooling system for liquid-cooled server - Google Patents

Abstract

The invention discloses a liquid-cooled server cooling system, which belongs to the field of server refrigeration. The technical problem to be solved is how to effectively cool down the liquid-cooled server and quickly cool the refrigerant; the structure includes a cabinet, a spray device inside the cabinet and a The heat exchanger and cold storage device outside the cabinet, the above-mentioned spraying device, cabinet, heat exchanger, pipeline I and pipeline II form a refrigeration circulation circuit in the cabinet, and insulating refrigerant flows in the refrigeration circulation circuit in the cabinet; The liquid inlet II, the cold accumulator and the liquid outlet II of the heat exchanger are connected in turn through pipes to form a refrigeration circulation circuit outside the cabinet. Refrigerant flows in the refrigeration circulation circuit outside the cabinet; there is a refrigeration circuit connected between the heat exchanger and the spraying device. A liquid pump, a refrigerant pump is connected between the heat exchanger and the cold storage. The invention provides a fast and energy-saving cooling liquid cooling server.

Description

A liquid-cooled server cooling system

technical field

The invention relates to the field of server refrigeration, in particular to a liquid-cooled server cooling system.

Background technique

With the rapid development of mobile data, cloud computing, and big data services, the scale of data center construction is getting larger and larger, and the demands of data center owners for energy saving in data centers have gradually become prominent. In recent years, many new energy-saving technologies for data centers have emerged. The emergence of direct immersion liquid-cooled servers using electronic refrigerant technology, with its advantages of high availability, high density, and ultra-low PUE, is bound to shake the industry's energy-saving and consumption-reducing technologies for data centers. cognition.

The direct immersion liquid-cooled server is completely submerged in the refrigerant, and the server is cooled by evaporative cooling of the refrigerant, which is much more efficient than the air-cooled mode of indirect cooling, because evaporative cooling uses the latent heat of vaporization when the liquid boils to bring Since the latent heat of vaporization of a liquid is much greater than its specific heat, evaporative cooling, an efficient cooling method, is gradually being applied to computers. It is very important that the liquid can be cooled quickly. Based on this, how to quickly and energy-savingly cool down the liquid-cooled server and rapidly cool the refrigerant is a technical problem that needs to be solved.

Contents of the invention

The technical task of the present invention is to provide a liquid-cooled server cooling system to solve the problem of how to effectively cool down the liquid-cooled server and rapidly cool the refrigerant.

Technical task of the present invention is realized in the following manner:

A cooling system for a liquid-cooled server, including a cabinet, a spray device inside the cabinet, a heat exchanger and a cold storage device outside the cabinet, the heat exchanger includes a liquid inlet I, a liquid outlet I, a liquid inlet II and an outlet The liquid port II, the liquid outlet I of the heat exchanger is connected to the pipe I, and the pipe I passes through the side wall of the cabinet to connect to the spray device, and the liquid inlet I of the heat exchanger is connected to the pipe II, and the pipe II passes through The side wall of the cabinet is connected to the inner cavity of the cabinet, and the above-mentioned spraying device, cabinet, heat exchanger, pipeline I and pipeline II form a refrigeration circulation circuit in the cabinet, and insulating refrigerant flows in the refrigeration circulation circuit in the cabinet; the heat exchanger The liquid inlet II of the cold accumulator and the liquid outlet II of the heat exchanger are connected through pipelines in turn to form a refrigeration cycle outside the cabinet. Refrigerant flows in the refrigeration cycle outside the cabinet; there is a connection between the heat exchanger and the spraying device. The refrigerant pump is connected with the refrigerant pump between the heat exchanger and the cool accumulator. The liquid-cooled server is immersed in the cooling liquid in the cabinet. The cooling liquid absorbs the heat dissipated by the liquid-cooling server. The heated cooling liquid exchanges heat with the refrigerant in the heat exchanger, and the cooled cooling liquid circulates to the spray device. , to provide recooling for the liquid-cooled server. At the same time, the heated refrigerant exchanges heat with the external cold air in the cold storage, and the cooled refrigerant circulates into the heat exchanger to cool the refrigerant.

Further, the upper part of the side wall of the cabinet is provided with a pipe routing hole I through which the pipe I passes, and the bottom end of the side wall of the cabinet is provided with a pipe routing hole II through which the pipe II passes.

Further, the spray device is located at the upper part of the inner cavity of the cabinet. The spraying device is arranged on the upper part of the inner cavity of the cabinet, so that the refrigerant is sprayed onto the liquid-cooled server.

Further, the cold accumulator is a dry cooler or a cooling tower. The cold accumulator is used to realize the heat exchange between the refrigerant in it and the cold air outside.

Further, the cooling liquid pump is a circulating pump, and the cooling liquid pump is connected to the pipeline I or the pipeline II. The refrigerant pump realizes the circulating flow of the refrigerant in the refrigeration cycle in the cabinet.

Further, the refrigerant pump is a circulation pump, and the refrigerant pump is connected to the pipe between the liquid inlet II of the heat exchanger and the cold storage, or the refrigerant pump is connected to the liquid outlet II of the cold storage and the heat exchanger. between the pipes. The refrigerant pump realizes the circulating flow of the refrigerant in the refrigeration cycle outside the cabinet.

A liquid-cooled server cooling system of the present invention has the following advantages:

1. In the present invention, high-density server equipment is placed in the cabinet, and the server is immersed in the liquid insulating cooling liquid in the cabinet. The cooling liquid continuously absorbs the heat emitted by the server, and the server equipment is cooled in real time through the process of transferring heat through the cooling liquid. Compared with cooling methods such as cold air, the cooling efficiency is improved. The heated refrigerant exchanges heat with the refrigerant in the heat exchanger, and the cooled refrigerant continues to cool the server again through the spray device, which improves the heat exchange efficiency. , which is beneficial to the cooling of server equipment;

2. The present invention has high availability, high density, and low PUE (full name in English: Power Usage Effectiveness, Chinese translation is: an index for evaluating the energy efficiency of data centers, and the calculation method is: total equipment energy consumption of data centers/IT equipment energy consumption) , The advantages of energy saving and consumption reduction.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings.

Accompanying drawing 1 is a structural schematic diagram of a liquid-cooled server cooling system;

In the figure: 1. Cabinet, 2. Spraying device, 3. Pipe hole Ⅰ, 4. Pipe Ⅰ, 5. Heat exchanger, 6. Refrigerant pump, 7. Cooler, 8. Pipeline, 9. Pipeline Ⅱ , 10, refrigerant pump, 11, pipe hole II, 12, refrigerant, 13, liquid-cooled server.

detailed description

A liquid-cooled server cooling system of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Example:

As shown in Figure 1, a liquid-cooled server cooling system of the present invention includes a cabinet 1, a spray device 2 located inside the cabinet 1, a heat exchanger 5 and a cold storage device 7 located outside the cabinet 1, and the side of the cabinet 1 The upper part of the wall is provided with a pipe hole I3, the bottom end of the side wall of the cabinet 1 is provided with a pipe hole II11, and the heat exchanger 5 includes a liquid inlet I, a liquid outlet I, a liquid inlet II and a liquid outlet II , one nozzle of the pipe I4 communicates with the liquid outlet I of the heat exchanger 5, the other nozzle of the pipe I4 passes through the pipe hole I3 and communicates with the spray device 2, and one nozzle of the pipe II9 communicates with the heat exchanger 5 The liquid inlet I of the pipe is connected, and the other nozzle of the pipe II9 is connected to the inner cavity of the cabinet 1 through the pipe hole II11. The above-mentioned spray device 2, cabinet 1, heat exchanger 5, pipe I4 and pipe II9 form the inside of the cabinet Refrigeration cycle circuit, insulated refrigeration liquid 12 flows in the refrigeration cycle circuit in the cabinet; the liquid inlet II of the heat exchanger 5, the cold storage device 7 and the liquid outlet II of the heat exchanger 5 are sequentially connected through the pipeline 8 to form an external refrigeration system. Circulation loop, refrigerant flows in the refrigerating circulation loop outside the cabinet. Wherein, the refrigerant pump 10 is communicated with the pipeline II9, and the refrigerant pump 6 is communicated between the liquid inlet II of the heat exchanger 5 and the regenerator 7, and both the refrigerant pump 10 and the refrigerant pump 6 are circulation pumps.

The shower device 2 is located at the upper part of the inner cavity of the cabinet 1 . The spray head in the spray device 2 is arranged above the liquid-cooled server 13 to facilitate spraying the cooling liquid 12 onto the liquid-cooled server 13 .

The cold accumulator 7 is a dry cooler, and the refrigerant exchanges heat with the external cold air in the dry cooler. In the heat exchanger, the refrigerant cools the refrigerant 12, and the heated refrigerant flows into the dry cooler, and the cold air in the dry cooler The refrigerant cools after exchanging heat with the external cold air, and the cooled refrigerant circulates in the heat exchanger to continue cooling the refrigerant 12. The dry cooler is only an option for the cold storage 7, and a cooling tower can also be used as the cold storage 7, and the refrigerant in the cooling tower exchanges heat with the external cold air.

A method of using the liquid-cooled server cooling system of the present invention is as follows: the liquid-cooled server 13 is arranged in the cabinet 1, and is located below the spraying device; The heat of the liquid-cooled server 13, the heated refrigerant 12 flows into the heat exchanger to exchange heat with the refrigerant, the cooled refrigerant 12 circulates to the spray device 2, and is sprayed by the spray device 2 to the liquid-cooled On the server 13, the liquid-cooled server 13 is cooled again; at the same time, the refrigerant that cools the freezing liquid 12 in the heat exchanger flows into the dry cooler, and the refrigerant in the dry cooler exchanges heat with the external cold air, and the cooled The refrigerant circulates into the heat exchanger to lower the temperature of the refrigerant liquid 12 again.

Through the above specific implementation manners, those skilled in the technical field can easily realize the present invention. However, it should be understood that the present invention is not limited to the specific embodiments disclosed above. On the basis of the disclosed embodiments, those skilled in the art can arbitrarily combine different technical features, so as to realize different technical solutions.

Except for the technical features described in the instructions, all are known technologies by those skilled in the art.

Claims (6)

1. a kind of liquid-cooled suit is engaged in device cooling system, it is characterised in that including rack, the spray equipment in rack and be located at Heat exchanger and regenerator outside rack, heat exchanger includes inlet I, liquid outlet I, inlet II and liquid outlet II, heat exchanger Pipeline I is communicated with liquid outlet I, pipeline I is communicated to spray equipment through the side wall of rack, connects on the inlet I of heat exchanger There is pipeline II, pipeline II is communicated to the inner chamber of rack, above-mentioned spray equipment, rack, heat exchanger, pipeline I through the side wall of rack With refrigeration cycle in the composition cabinet of pipeline II, flowing has the freezing liquid of insulation in refrigeration cycle in cabinet；

The inlet II, regenerator of heat exchanger and the liquid outlet II of heat exchanger are sequentially communicated the outer kind of refrigeration cycle of composition cabinet by pipeline Loop, flowing in the outer refrigeration cycle of cabinet has cold-producing medium；

Freezing liquid pump is communicated between heat exchanger and spray equipment, refrigerated medium pump is communicated between heat exchanger and regenerator.

2. a kind of liquid-cooled suit according to claim 1 is engaged in device cooling system, it is characterised in that opened on the top of the side wall of rack Having walk pore I for what pipeline I was passed through, and the bottom of the side wall of rack to be provided with and walk pore II for what pipeline II was passed through.

3. a kind of liquid-cooled suit according to claim 1 and 2 is engaged in device cooling system, it is characterised in that spray equipment is located at rack Inner chamber top.

4. a kind of liquid-cooled suit according to claim 1 is engaged in device cooling system, it is characterised in that regenerator is dry and cold device or cold But tower.

5. a kind of liquid-cooled suit according to claim 1 is engaged in device cooling system, its feature be freezing liquid pump be circulating pump, Freezing liquid pump is connected on pipeline I or pipeline II.

6. a kind of liquid-cooled suit according to claim 1 is engaged in device cooling system, it is characterised in that refrigerated medium pump is circulating pump, system Cryogenic fluid pump is connected on pipeline between the inlet II and regenerator of heat exchanger, or, refrigerated medium pump connection in regenerator and On pipeline between the liquid outlet II of heat exchanger.