CN110730601A - A liquid immersion server cabinet and its cooling system - Google Patents

Abstract

The invention discloses a liquid immersion server cabinet and a cooling system thereof, including a liquid immersion cabinet, a server, a heat exchanger, a natural cooler, a refrigeration device, a solenoid valve, a liquid storage tank, a liquid pump, cooling oil, a cooling medium and Cooling medium piping. The cooling oil is contained in the liquid immersion cabinet, the server and the heat exchanger are immersed in the cooling oil, and the heat exchanger is placed between the two sets of servers. The system has two cooling modes: natural cooling and partial natural cooling. When the outdoor temperature is low, the natural cooling mode is operated; when the outdoor temperature is high, the partial natural cooling mode is operated. The two modes can be automatically adjusted according to the outdoor temperature and demand. switch. In the liquid immersion server cabinet and its cooling system, the cooling oil is in direct contact with the server for heat exchange, which improves the heat dissipation efficiency of the server; makes full use of the natural cold source, and combines cooling with the cooling device to reduce the energy consumption of the data center.

Description

A liquid immersion server cabinet and its cooling system

technical field

The invention relates to the field of server cabinets, in particular to a liquid immersion server cabinet.

Background technique

With the development of big data and cloud computing technology, more and more data centers are being built, and the power consumption of data centers is also increasing while outputting computing power. The heating temperature of the server can reach above 60°C, and it needs to be dissipated by auxiliary equipment. If the heat dissipation effect is not good, the server will easily go down due to local overheating, which will affect the normal operation of the data center. Therefore, server cooling is an important problem that data centers need to solve. Most traditional data centers use air-conditioning for air-cooled heat dissipation, which consumes a lot of energy and has low heat dissipation efficiency.

Liquid immersion cooling is to place the server directly in the cooling liquid for heat exchange and cooling, and the cooling liquid is in direct contact with the server for heat exchange, and the heat exchange efficiency is high. In addition, the temperature of the cooling liquid after heat exchange is high, so the natural cooling source can be fully utilized to cool the cooling liquid and reduce the energy consumption of the data center.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a liquid-immersed server cabinet and a cooling system thereof, which adopts natural cooling technology and makes full use of natural cooling sources to solve the problems of poor heat dissipation efficiency of servers and high energy consumption of data centers.

The present invention solves the technical problem by adopting the following technical solutions:

A liquid immersion server cabinet and a cooling system thereof, comprising a liquid immersion cabinet, a server, a heat exchanger, a natural cooler, a refrigeration device, a solenoid valve, cooling oil, a cooling medium and a cooling medium pipeline. The cooling oil is contained in a liquid immersion cabinet; the server is immersed in the cooling oil; the heat exchanger is immersed in the cooling oil and placed between the two groups of servers; the inlet of the natural cooler passes through the cooling medium The pipeline is connected with the outlet of the heat exchanger, the outlet of the natural cooler is connected with the inlet of the refrigeration device through the cooling medium pipeline, and the outlet of the refrigeration device is connected with the inlet of the heat exchanger through the cooling medium pipeline; the refrigeration device is connected in parallel with a solenoid valve; The cooling oil is non-conductive, non-volatile, non-flammable, non-corrosive electronic cooling liquid; the cooling medium is Freon.

Further, one group or two groups or more than two groups of servers are provided with one group of heat exchangers.

Further, the cooling medium pipes in the cabinet are arranged along the sides of the cabinet.

Further, the installation position of the free cooler is higher than the position of the heat exchanger.

Further, the installation position of the natural cooler is at the same height as the position of the heat exchanger or is lower than the position of the heat exchanger.

Further, a liquid storage tank is arranged at the outlet of the solenoid valve, and a liquid pump is arranged between the liquid storage tank and the inlet of the heat exchanger.

Further, one or two or more than two cabinets are provided with a set of natural coolers.

Further, the top of the cabinet is provided with a top cover, which is a glass cover.

Further, casters are provided at the bottom of the cabinet.

Further, the system has two cooling modes: natural cooling and partial natural cooling. When the outdoor temperature is low, the natural cooling mode is operated; when the outdoor temperature is high, the partial natural cooling mode is operated. The two modes are based on the outdoor temperature and Requirements can be switched automatically.

The invention has the following beneficial effects: the liquid immersion server cabinet and its cooling system, the server is placed in the cooling oil, the cooling oil and the server are in direct contact for heat exchange, and the heat dissipation efficiency of the server is improved; the natural cooling technology is adopted, and the natural cooling source is fully utilized , combined with the refrigeration unit for cooling, reducing the energy consumption of the data center.

Description of drawings

The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

FIG. 1 is a schematic structural diagram of a first embodiment of a liquid immersion server cabinet and its cooling system.

FIG. 2 is a schematic structural diagram of a second embodiment of a liquid immersion server cabinet and its cooling system.

FIG. 3 is a schematic structural diagram of a third embodiment of a liquid immersion server cabinet and its cooling system.

FIG. 4 is a schematic structural diagram of a fourth embodiment of a liquid immersion server cabinet and its cooling system.

In the figure: (1) cabinet; (2) server; (3) heat exchanger; (4) natural cooler; (5) liquid storage tank; (6) liquid pump; (7) cooling oil (not marked in the figure) (8) Cooling medium (not marked in the figure); (9) Cooling medium pipeline; (10) Refrigeration device; (11) Solenoid valve.

Detailed ways

In order for those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only Embodiments of some, but not all, of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present invention.

The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

As shown in FIG. 1, it is a schematic structural diagram of the first embodiment of the liquid immersion server cabinet and its cooling system of the present invention, including a liquid immersion cabinet 1, a server 2, a heat exchanger 3, a natural cooler 4, a refrigeration device 10, Solenoid valve 11 , cooling oil 7 , cooling medium 8 and cooling medium pipeline 9 . The cooling oil 7 is contained in the liquid immersion cabinet 1; the server 2 is immersed in the cooling oil 7; the heat exchanger 3 is immersed in the cooling oil 7 and placed between the two groups of servers 2; the natural The inlet of the cooler 4 is connected with the outlet of the heat exchanger 3 through the cooling medium pipe 9, the outlet of the natural cooler 4 is connected with the inlet of the refrigeration device 10 through the cooling medium pipe 9, and the outlet of the refrigeration device 10 is connected with the heat exchanger through the cooling medium pipe 9. The inlets of the heater 3 are connected; the refrigeration device 10 is connected with a solenoid valve 11 in parallel.

The server 2 is immersed in the cooling oil 7 and is in direct contact with the cooling oil 7 , and the heat generated by the server 2 is directly dissipated into the cooling oil 7 , thereby improving the heat dissipation efficiency of the server 2 . After the cooling oil 7 exchanges heat with the server 2 , the temperature rises, and the heat exchanger 3 placed in the cabinet 1 exchanges heat to cool down, so as to continuously cool the server 2 .

The heat exchanger 3 is placed inside the cabinet 1 , directly immersed in the cooling oil 7 , and placed between the two groups of servers 2 . Each group of servers 2 is provided with a corresponding set of heat exchangers 3, or each two groups of servers 2 are provided with a corresponding set of heat exchangers 3, or each two or more sets of servers 2 are provided with a corresponding set of heat exchangers 3, or a mixed arrangement of heat exchangers device 3. The heat exchangers 3 are distributed in the cabinet 1, have a large contact area with the cooling oil 7, and are close to the server 2, so that the temperature of the cooling oil 7 can be uniform and the heat dissipation efficiency of the server 2 can be improved.

After the cooling oil 7 exchanges heat with the server 2 , the temperature rises, and the cooling medium 8 in the heat exchanger 3 cools the cooling oil 7 . When the outdoor temperature is low, the solenoid valve 11 is opened, the refrigeration device 10 stops working, the cooling medium 8 evaporates into gas in the heat exchanger 3 and enters the natural cooler 4, and the cooling medium 8 directly dissipates heat to the environment through the natural cooler 4, Cooling and cooling, cooling into liquid in natural cooler 4; the installation position of natural cooler 4 is higher than the position of heat exchanger 3, under the action of gravity, the liquid cooling medium 8 returns to heat exchanger 3 for the next cycle , in this mode, the natural cooler 4 provides all the cooling capacity, which is the natural cooling mode. When the outdoor temperature is high, the solenoid valve 11 is closed, the refrigeration device 10 works, the cooling medium 8 is cooled by the natural cooler 4, and then enters the refrigeration device 10 for further cooling, and then sent to the heat exchanger 3 for the next cycle , in this mode, the natural cooler 4 provides part of the cooling capacity, and the refrigeration device 10 supplements and provides part of the cooling capacity, which is a part of the natural cooling mode. The two modes can be switched automatically according to the outdoor temperature and demand.

As shown in FIG. 2 , it is a schematic structural diagram of the second embodiment of the liquid immersion server cabinet and its cooling system of the present invention. On the basis of the first embodiment, two or more liquid immersion cabinets 1 are provided with a set of natural The cooler 4 and the cooling medium 8 evaporate into gas in the heat exchanger 3 of each cabinet 1, and enter the natural cooler 4 for cooling after the cooling medium pipes 9 converge. When the outdoor temperature is low, the solenoid valve 11 is opened, the refrigeration device 10 stops working, and the cooling medium 8 cooled to liquid is returned to the heat exchanger 3 of each cabinet 1 under the action of gravity. When the outdoor temperature is high, the solenoid valve 11 is closed, the refrigeration device 10 works, and the cooling medium 8 enters the refrigeration device 10 after being cooled by the natural cooler 4 for further cooling, and then is sent to the heat exchanger 3 of each cabinet 1 .

As shown in FIG. 3 , which is a schematic structural diagram of the third embodiment of the liquid immersion server cabinet and its cooling system of the present invention, the installation position of the natural cooler 4 can be arbitrarily arranged, which is higher than the position of the heat exchanger 3 or similar to that of the heat exchanger 3 . The height of the heat exchanger 3 is the same or lower than that of the heat exchanger 3 , a liquid storage tank 5 is arranged at the outlet of the solenoid valve 11 , and a liquid pump 6 is arranged between the liquid storage tank 5 and the inlet of the heat exchanger 3 . When the outdoor temperature is low, the solenoid valve 11 is opened, the refrigeration device 10 stops working, the cooling medium 8 evaporates into a gas in the heat exchanger 3, enters the natural cooler 4, and after being cooled into a liquid in the natural cooler 4, enters the storage The liquid tank 5 is then transported to the heat exchanger 3 under the pulling force of the liquid pump 6. In this mode, the natural cooler 4 provides all the cooling capacity, which is the natural cooling mode. When the outdoor temperature is high, the solenoid valve 11 is closed, and the refrigeration device 10 works. After the cooling medium 8 is cooled by the natural cooler 4, it enters the refrigeration device 10 for further cooling, and is then sent to the heat exchanger 3. In this mode, The natural cooler 4 provides part of the cooling capacity, and the refrigeration device 10 supplements and provides part of the cooling capacity, which is a part of the natural cooling mode. The two modes can be switched automatically according to the outdoor temperature and demand.

As shown in FIG. 4, it is a schematic structural diagram of the fourth embodiment of the liquid immersion server cabinet and its cooling system of the present invention. On the basis of the third embodiment, two or more liquid immersion cabinets 1 are provided with a set of natural Cooler 4. The cooling medium 8 is evaporated into gas in the heat exchangers 3 of each cabinet 1, and enters the natural cooler 4 for cooling after the cooling medium pipes 9 converge. When the outdoor temperature is low, the solenoid valve 11 is opened, and the refrigeration device 10 stops working. After the cooling medium 8 is cooled into liquid by the natural cooler 4, it enters the liquid storage tank 5, and is transported to the various in the heat exchanger 3 of the cabinet 1. When the outdoor temperature is high, the solenoid valve 11 is closed, the refrigeration device 10 works, and the cooling medium 8 enters the refrigeration device 10 after being cooled by the natural cooler 4 for further cooling, and then is sent to the heat exchanger 3 of each cabinet 1 .

The cooling oil 7 is a non-conductive, non-volatile, non-flammable and non-corrosive electronic cooling liquid, and only circulates inside the liquid immersion cabinet 1, which reduces the usage of the cooling oil 7 and not only reduces the consumption of the liquid immersion cabinet 1. weight, and the use cost of cooling oil 7 is saved.

The top of the cabinet 1 is provided with a top cover, which is a glass cover; when the server 2 is working, the working state of the server 2 can be observed through the glass cover. The server 2 needs to be put in or taken out from the top of the cabinet 1 , and the cooling medium pipes 9 in the cabinet 1 are arranged along the side of the cabinet 1 , which does not affect the putting in or taking out of the server 2 . Casters are installed at the bottom of the cabinet 1 to facilitate the movement of the cabinet 1.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. A liquid immersion type server cabinet and a cooling system thereof are characterized by comprising a liquid immersion cabinet, a server, a heat exchanger, a natural cooler, a refrigerating device, an electromagnetic valve, cooling oil, a cooling medium and a cooling medium pipeline; the cooling oil is contained in the liquid immersion cabinet; the server is immersed in cooling oil; the heat exchanger is immersed in the cooling oil and is placed between the two groups of servers; the inlet of the natural cooler is connected with the outlet of the heat exchanger through a cooling medium pipeline, the outlet of the natural cooler is connected with the inlet of the refrigerating device through a cooling medium pipeline, and the outlet of the refrigerating device is connected with the inlet of the heat exchanger through a cooling medium pipeline; the refrigerating device is connected with an electromagnetic valve in parallel; the cooling oil is non-conductive, non-volatile, non-flammable and non-corrosive electronic cooling liquid; the cooling medium is freon.

2. The cabinet for liquid-immersed servers and the cooling system thereof as claimed in claim 1, further characterized in that: one or two or more groups of servers are provided with one group of heat exchangers.

3. The cabinet for liquid-immersed servers and the cooling system thereof as claimed in claim 1, further characterized in that: the cooling medium ducts in the cabinet are arranged along the sides of the cabinet.

4. The cabinet for liquid-immersed servers and the cooling system thereof as claimed in claim 1, further characterized in that: the natural cooler is installed at a position higher than that of the heat exchanger.

5. The cabinet for liquid-immersed servers and the cooling system thereof as claimed in claim 1, further characterized in that: the natural cooler is installed at the same height as or lower than the heat exchanger.

6. The cabinet for liquid-immersed servers and the cooling system thereof as claimed in claim 1 or 5, further characterized in that: a liquid storage tank is arranged at the outlet of the electromagnetic valve, and a liquid pump is arranged between the liquid storage tank and the inlet of the heat exchanger.

7. The cabinet for liquid-immersed servers and the cooling system thereof as claimed in claim 1, further characterized in that: one or two or more cabinets are provided with a set of natural coolers.

8. The cabinet for liquid-immersed servers and the cooling system thereof as claimed in claim 1, further characterized in that: the top of the cabinet is provided with a top cover plate which is a glass cover plate.

9. The cabinet for liquid-immersed servers and the cooling system thereof as claimed in claim 1, further characterized in that: the bottom of the cabinet is provided with casters.

10. The cabinet for liquid-immersed servers and the cooling system thereof as claimed in claim 1, further characterized in that: the system has two cooling modes of natural cooling and partial natural cooling, and when the outdoor temperature is lower, the system runs the natural cooling mode; when the outdoor temperature is high, a partial natural cooling mode is operated, and the two modes are automatically switched according to the outdoor temperature and the requirement.

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