CN117881167A - Data center wind-liquid mixed cooling system based on active and passive heat dredging technology - Google Patents

Abstract

The invention belongs to the technical field of heat dissipation systems, and particularly relates to a data center wind-liquid mixed cooling system based on a main heat dispersion technology and a passive heat dispersion technology, which comprises a cabinet-level liquid cooling system and a I T equipment-level liquid cooling system, wherein the cabinet-level liquid cooling system comprises a cabinet-level pump heat-driving pipe system and a cabinet-level mechanical branch, the cabinet-level pump heat-driving pipe system dissipates heat of a cabinet by utilizing a refrigerating medium in a system pipeline, the cabinet-level natural cold source system condenses the refrigerating medium in the pipeline by utilizing a natural cold source, and the cabinet-level pump heat-driving pipe system and the cabinet-level mechanical branch are applicable to different natural temperatures; the I T equipment-level liquid cooling system is used for cooling I T equipment in a data cabinet, and the energy efficiency loss rate can be effectively reduced by adopting a cooling and heat dissipation mode of liquid cooling and natural cold source coupling, the natural cold source is utilized to the maximum extent, and meanwhile, the cabinet-level mechanical branch is used under the low-temperature condition of the natural environment, so that the system is in a low-energy consumption state mostly.

Description

Data center wind-liquid mixed cooling system based on active and passive heat dredging technology

Technical Field

The invention belongs to the technical field of heat dissipation systems, and particularly relates to a data center wind-liquid mixed cooling system based on active and passive heat dredging technology.

Background

A data center is a globally coordinated network of specific devices for delivering, accelerating, exposing, computing, and storing data information over an I nternet network infrastructure. In future developments, data centers may become an important asset for business competition and business models may change accordingly. With the widespread use of data centers, artificial intelligence, network security, etc. have continued to appear, and more users have been attracted to network and cell phone applications. With the increase of computers and data volume, people can also improve their own capacity through continuous learning accumulation, which is an important mark for the information age.

The energy-saving and emission-reducing work is an important way for coping with global climate warming. With the development of 5G technology and the coming of the information age, the service volume of the Internet is continuously increased, and the heating value of a server in a data cabinet is continuously increased, so that the server must be effectively cooled and radiated in order to ensure the safe and efficient operation of the server. However, the servers do not run at high power at all times, the load variation amplitude is very large, the heat productivity of the servers is increased during the network use peak period, the heat productivity of the servers is reduced during the valley period, but the heat dissipation system of the cabinet always maintains the same heat dissipation state, so that the mismatch of the heat dissipation capacity of the cabinet and the heat dissipation requirement of the servers is caused when the servers run at low load, the energy consumption of the heat dissipation system of the cabinet is increased, the energy utilization rate is reduced, and a large amount of electric energy is wasted meaningless.

According to the existing heat dissipation scheme of the data cabinet, the data cabinet with different working states and different heat dissipation requirements can be found, and the existing heat dissipation scheme cannot be well matched with the required refrigerating capacity, so that a large amount of resource waste is caused, and high heat dissipation efficiency and low heat dissipation energy consumption are difficult to consider at the same time. Accordingly, there is a need for a heat dissipation system with multi-mode power consumption for current data cabinets.

Disclosure of Invention

The invention aims to solve the technical problems, and provides a data center air-liquid mixed cooling system based on active and passive heat dredging technologies, so that the energy efficiency loss rate can be effectively reduced by adopting a cooling and air-cooling coupling cooling and heat dissipation mode, a natural cold source is utilized to the maximum extent, and meanwhile, the system uses a cabinet pump heat pipe system in a low-temperature environment.

In view of the above, the present invention provides a data center wind-liquid hybrid cooling system based on active and passive heat dredging technology, comprising:

the cabinet-level liquid cooling system is used for radiating a cabinet and comprises a cabinet-level composite liquid cooling system and a cabinet-level natural cold source system, the cabinet-level composite liquid cooling system comprises a cabinet-level pump heat-driving pipe system and a cabinet-level mechanical branch, the cabinet-level pump heat-driving pipe system radiates heat to the cabinet by utilizing a refrigerating medium in a system pipeline, the cabinet-level mechanical branch radiates heat by utilizing a compressor to compress the refrigerating medium, the cabinet-level natural cold source system is arranged on the cabinet-level composite liquid cooling system, the cabinet-level natural cold source system condenses the refrigerating medium in the pipeline by utilizing a natural cold source, and the cabinet-level pump heat-driving pipe system and the cabinet-level mechanical branch are applicable to different natural temperatures;

i T equipment-level liquid cooling system, I T equipment-level liquid cooling system is used for cooling I T equipment in the data cabinet, I T equipment-level liquid cooling system includes I T equipment evaporimeter, I T equipment-level pump heat drive pipe system and I T equipment-level natural cold source system, I T equipment evaporimeter directly pastes with I T equipment, and I T equipment-level pump heat drive pipe system utilizes the refrigeration working medium in the system pipeline to dispel the heat to I T equipment, and I T equipment-level natural cold source system sets up on I T equipment-level pump heat drive pipe system, and I T equipment-level natural cold source system utilizes natural cold source to condense the refrigeration working medium in the pipeline.

In the technical scheme, the cooling and heat dissipation mode of liquid cooling and natural cold source coupling is adopted, so that the energy efficiency loss rate can be effectively reduced, the natural cold source is utilized to the maximum extent, and meanwhile, the system uses a cabinet mechanical branch under the condition of low temperature in the natural environment, so that the system is in a low energy consumption state in most of the time.

Further, cabinet level pump drives heat pipe system including the rack evaporator through the pipe connection, regenerator, power pump and solenoid valve, the rack evaporator sets up in data cabinet department, cabinet level mechanical type branch road is including parallelly connected first branch road on cabinet level pump drives heat pipe system pipeline and parallelly connected second branch road at power pump both ends, it has cooling refrigerant to lead to in the pipeline of cabinet level pump drives heat pipe system, be provided with the compressor on the first branch road, be provided with the choke valve on the second branch road, the solenoid valve is used for realizing the break-make of first branch road and second branch road.

In the technical scheme, the working process of the cabinet-level pump heat-driving pipe system is that after freon refrigerant is heated in a pipeline of the cabinet-level pump heat-driving pipe system by cabinet heat, the refrigerant is evaporated into gas after absorbing the heat, the vaporized saturated steam can flow to a natural cold source system along the pipeline to be condensed under the action of a power pump, and the power pump continuously drives the refrigerant to flow back to a cabinet evaporator in the cabinet, so that heat is dissipated circularly. The working process of the cabinet mechanical branch is that the Freon refrigerating working medium is heated in a pipeline of a cabinet pump heat-driving pipe system by the heat of the cabinet, compressed by a compressor and then flows to a natural cold source system for condensation, and then returns to a cabinet evaporator in the cabinet, so that heat is circularly dissipated.

The phase change technology is utilized to improve the heat transfer coefficient, fully reduce the heat transfer temperature difference of cold and hot sources, and the freon refrigerating working medium is adopted without leakage risk.

The heat pipe system is compact, the heat radiation efficiency is high, for the evaporator of the gravity heat pipe of the I T equipment-level liquid cooling system, the evaporator can take away the heat load of 300WI T equipment by controlling the wall superheat degree within 8 ℃ only by manufacturing the aluminum alloy with a shell with the thickness of 2 mm; by adopting independent I T equipment-level gravity heat pipes, even if the liquid cooling plate of a single gravity heat pipe fails, other normal work is not affected, and the running risk of the system is reduced; the gravity heat pipe is adopted to take away the heat of I T equipment, the temperature difference of the surface of I T equipment can be controlled to be less than +/-3 ℃, and the service life of I T equipment is greatly prolonged. The heat pipe is adopted for dividing wall type heat conduction, the environment in a machine room and the outdoor environment are isolated, the indoor humidity change is small, and the energy consumption of the precise air conditioner is reduced.

Further, the I T equipment-level pump heat-driving pipe system comprises a heat regenerator and a power pump which are arranged on a pipeline, a low-pressure refrigeration working medium is arranged in the pipeline, the power pump provides power for the flow of the low-pressure refrigeration working medium in the pipeline, the pipeline passes through the I T equipment-level natural cold source system, and the I T equipment-level natural cold source system can condense the high-temperature low-pressure refrigeration working medium in the pipeline.

Further, the cabinet-level pump heat-driving pipe system and the I T equipment-level pump heat-driving pipe system are respectively provided with a liquid storage branch, the liquid storage branch comprises a liquid storage tank and a valve unit, the liquid storage branch is arranged on the pipelines of the cabinet-level pump heat-driving pipe system and the I T equipment-level pump heat-driving pipe system through the valve unit, and the controller can control the valve unit to be opened and closed so as to control the liquid storage tank to supplement or recycle refrigerating working media to the pipelines of the cabinet-level pump heat-driving pipe system and the I T equipment-level pump heat-driving pipe system.

In the technical scheme, in the cabinet-level pump heat-driving pipe system, less refrigeration working medium is needed in a compressor mode of a cabinet-level mechanical branch, and redundant refrigeration working medium is needed to be recovered from a main pipeline to a liquid storage tank; compared with the pump heat-driving pipe mode of the cabinet-level pump heat-driving pipe system, more refrigerant is needed, the refrigerant of the liquid storage tank needs to be supplemented to the main pipeline, and for the I T equipment-level liquid cooling system, the liquid storage tank can supplement the refrigerant to the main pipeline after the refrigerant in the pipeline is naturally lost.

Further, the liquid storage tank comprises a liquid storage tank body, a connecting port is arranged at the bottom of the liquid storage tank body, an elastic diaphragm is arranged in the liquid storage tank, the diaphragm divides the interior of the liquid storage tank into a liquid chamber and an air chamber, an air inlet nozzle is arranged in the air chamber, the air chamber is arranged on the upper portion of the liquid chamber, the liquid storage tank is further provided with a pressure gauge for displaying the pressure in the air chamber, and the pressure in the air chamber can be adjusted to adjust the pressure of refrigerating medium in the liquid chamber.

In the technical scheme, after the compressor mode is switched to the heat pipe mode, the pipeline pressure is lowered, the valve unit is opened at the moment, the refrigerating medium pressure in the liquid storage tank is regulated by accurately inflating the air chamber, and the high-pressure refrigerating medium in the liquid storage tank is automatically discharged into the main pipeline under the preset pressure difference to regulate the main pipeline pressure.

Furthermore, the liquid storage tank is also provided with a temperature regulating structure which is used for controlling the temperature of the refrigerating working medium.

In this technical scheme, the temperature that adjusts the temperature structure can further adjust the refrigerant, satisfies heat dissipation temperature, but also can not make the temperature too low and influence data center work.

Further, the temperature adjustment structure includes:

the cooling coil is arranged in the liquid storage tank liquid chamber and used for cooling the working medium in the liquid storage tank liquid chamber, and a cooling source of the cooling coil is a natural cooling source system;

the heating piece is arranged outside the liquid storage tank in a surrounding mode and is used for heating working media in the liquid storage tank.

Further, the natural cold source system comprises a condensing unit, a spraying assembly is arranged on the condensing unit, the condensing unit comprises a natural air inlet, an air outlet and a fan, a water pipe is arranged in the condensing unit and connected with the spraying assembly, and the spraying assembly and natural wind are both used for cooling water in the water pipe.

In the technical scheme, pipelines of the cabinet-level pump heat-driving pipe system and the I T equipment-level pump heat-driving pipe system can extend into the condensing unit, and cooling is carried out on the extending pipelines through the spraying assembly and natural wind so as to condense refrigerating working media in the pipelines.

Furthermore, the water pipe in the condensing unit is also connected with the cooling coil, and a valve is arranged at the water inlet of the cooling coil.

In the technical scheme, the water pipe in the condensing unit enters the cooling coil to cool the temperature in the liquid storage tank, so that the temperature of the refrigerating working medium is regulated, cold water does not need to enter a machine room and a cabinet, and a leakage-proof project is not required to be arranged; and no condensation risk is caused by small heat transfer temperature difference.

Further, the cabinet is also provided with an air supply structure for directly radiating the cabinet.

The beneficial effects of the invention are as follows:

1. the cooling and heat dissipation mode of liquid cooling and natural cold source coupling can effectively reduce the energy efficiency loss rate, the natural cold source is utilized to the maximum extent, and meanwhile, the system uses a cabinet mechanical branch under the condition of low temperature in the natural environment, so that the system is in a low energy consumption state in most of the time.

2. The phase change technology is utilized to improve the heat transfer coefficient, fully reduce the heat transfer temperature difference of cold and hot sources, and the freon refrigerating working medium is adopted without leakage risk.

3. The heat pipe system is compact, the heat radiation efficiency is high, for the evaporator of the gravity heat pipe of the I T equipment-level liquid cooling system, the evaporator can take away the heat load of 300WI T equipment by controlling the wall superheat degree within 8 ℃ only by manufacturing the aluminum alloy with a shell with the thickness of 2 mm; by adopting independent I T equipment-level gravity heat pipes, even if the liquid cooling plate of a single gravity heat pipe fails, other normal work is not affected, and the running risk of the system is reduced; the gravity heat pipe is adopted to take away the heat of I T equipment, the temperature difference of the surface of I T equipment can be controlled to be less than +/-3 ℃, and the service life of I T equipment is greatly prolonged. The heat pipe is adopted for dividing wall type heat conduction, the environment in a machine room and the outdoor environment are isolated, the indoor humidity change is small, and the energy consumption of the precise air conditioner is reduced.

4. The water pipe in the condensing unit enters the cooling coil pipe to cool the temperature in the liquid storage tank, so that the temperature of the refrigerating working medium is adjusted, cold water does not need to enter a machine room and the inside of a cabinet, and a liquid leakage prevention project is not required to be arranged; and no condensation risk is caused by small heat transfer temperature difference.

Drawings

FIG. 1 is a system diagram of the present invention;

FIG. 2 is a perspective view of a reservoir;

FIG. 3 is a cross-sectional view of a reservoir;

fig. 4 is a I T unit configuration and power in an embodiment.

The label in the figure is:

1. a cabinet level liquid cooling system; 2. i T plant-level liquid cooling system; 3. a natural cold source system; 4. a cabinet composite liquid cooling system; 5. i T plant evaporator; 6. i T plant-level pump drive heat pipe system; 7. a cabinet evaporator; 8. a regenerator; 9. a power pump; 10. an electromagnetic valve; 11. a data cabinet; 12. a first branch; 13. a second branch; 14. a compressor; 15. a throttle valve; 16. a liquid storage branch; 17. a liquid storage tank; 18. a connection port; 19. a diaphragm; 20. a liquid chamber; 21. a gas chamber; 22. an air inlet nozzle; 23. a cooling coil; 24. a heating member; 25. a spray assembly; 26. an air outlet; 27. an air supply structure; 28. i T apparatus.

Detailed Description

Technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some of the embodiments of the present application, but not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application are within the scope of the protection of the present application.

In the description of the present application, it is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. For ease of description, the dimensions of the various features shown in the drawings are not drawn to actual scale. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present application are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type and not limited to the number of objects, e.g., the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

It should be noted that, in the description of the present application, the terms "front, rear, upper, lower, left, right", "horizontal, vertical, horizontal", and "top, bottom", etc. generally refer to an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, and merely for convenience of description of the present application and simplification of the description, the azimuth terms do not indicate and imply that the apparatus or element referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present application; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

It should be noted that, in this application, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

Example 1:

as shown in fig. 1, a data center wind-liquid mixed cooling system based on active and passive heat dredging technology comprises a cabinet-level liquid cooling system 1 and a I T equipment-level liquid cooling system 2. The cabinet-level liquid cooling system 1 is used for radiating heat of a cabinet, and the I T equipment-level liquid cooling system 2 is used for radiating heat and cooling I T equipment in the data cabinet 11.

The cabinet level liquid cooling system 1 comprises a cabinet compound liquid cooling system 4 and a cabinet level natural cold source system 3, wherein the cabinet compound liquid cooling system 4 comprises a cabinet level pump heat driving pipe system and a cabinet level mechanical branch which can be mutually switched, the cabinet level pump heat driving pipe system dissipates heat of a cabinet by utilizing a refrigerating medium in a system pipeline, and the cabinet level mechanical branch dissipates heat of the refrigerating medium by utilizing a compressor 14. The cabinet pump heat-driving pipe system and the cabinet mechanical branch are suitable for different natural temperatures. An air supply structure 27 is also provided on the cabinet for directly dissipating heat from the cabinet.

The cabinet pump heat-driving pipe system comprises a cabinet evaporator 7, a heat regenerator 8, a power pump 9 and an electromagnetic valve 10 which are connected through pipelines, wherein the cabinet evaporator 7 is arranged at a data cabinet 11.

The cabinet level mechanical branch comprises a first branch 12 connected in parallel to the pipeline of the cabinet level pump heat-driving pipe system and a second branch 13 connected in parallel to the two ends of the power pump 9, a cooling refrigerant is introduced into the pipeline of the cabinet level pump heat-driving pipe system, a compressor 14 is arranged on the first branch 12, a throttle valve 15 is arranged on the second branch 13, and the electromagnetic valve 10 is used for realizing the on-off of the first branch 12 and the second branch 13.

The cabinet-level natural cold source system 3 is arranged on the cabinet composite liquid cooling system 4 system, and the cabinet-level natural cold source system 3 utilizes a natural cold source to condense the refrigerating medium in the pipeline. The natural cold source system 3 comprises a condensing unit, a spraying assembly 25 is arranged on the condensing unit, the condensing unit comprises a natural air inlet, an air outlet 26 and a fan, a water pipe is arranged in the condensing unit and connected with the spraying assembly 25, and the spraying assembly 25 and natural wind are both used for cooling water in the water pipe. Pipelines of the cabinet-level pump heat-driving pipe system and the I T equipment-level pump heat-driving pipe system 6 can extend into the condensing unit, and cooling is carried out on the extending pipelines through the spraying assembly 25 and natural wind so as to condense refrigerating media in the pipelines.

The cabinet-level liquid cooling system 1 realizes four working modes according to outdoor temperature change:

mode one: when the outdoor temperature is lower, the condensing unit spray assembly 25 is closed, the fan is started, air with low outdoor temperature enters the condensing unit to cool the refrigerating medium in the pipeline of the cabinet pump heat-driving pipe system, the refrigerating medium is condensed into liquid state from gas state, the power pump 9 is used for providing power to drive the refrigerating medium to enter the cabinet evaporator 7, the heat emitted by the cabinet server is absorbed in the cabinet evaporator 7, the refrigerating medium is changed into gas state from liquid state, then enters the heat exchanger to be subjected to heat recovery, and finally, the refrigerating medium is condensed by the condensing unit, and the process is circulated. This mode makes full use of the outdoor air for cooling.

Mode two: when the outdoor temperature rises, and the supplied refrigerating capacity of the mode I is insufficient, the spraying component 25 of the condensing unit can be opened on the basis of the mode I, and the refrigerating medium is condensed from a gas state to a liquid state. This mode makes full use of the outdoor air and cooling water for cooling. The water sprayed by the spraying assembly 25 covers the pipeline surface of the cabinet-level pump heat-driving pipe system, and the spraying water greatly improves the heat exchange efficiency by means of wind power.

Mode three: when the outdoor temperature continues to rise and the cooling capacity supplied by the mode two is insufficient, the condensing unit spray assembly 25 is turned off, and the fan, the compressor 14 and the throttle valve 15 are turned on. The refrigerant is compressed in the compressor 14, at which time the refrigerant temperature rises and the pressure rises. Then, the high-temperature high-pressure gaseous refrigerant is transmitted to a condensing unit through a pipeline, heat is released, gas-liquid phase change occurs, and the high-temperature high-pressure gaseous refrigerant becomes a high-pressure liquid refrigerant. Next, after being throttled by the throttle valve 15, the refrigerant becomes a low-pressure low-temperature liquid state or a gas-liquid two-phase state. Finally, the refrigerant enters the cabinet evaporator 7, the heat emitted by the cabinet server is absorbed in the cabinet evaporator 7, the refrigerant is changed from a liquid state to a gas state, and then the refrigerant enters the heat exchanger to perform heat recovery, and the process is circulated. The mode uses a compression refrigeration cycle and the condensing unit is in an air-cooled mode.

Mode four: when the outdoor temperature is higher, the condensing unit spray assembly 25 is started on the basis of the third mode, the refrigerating medium is cooled by cold air and spray water at the same time, and the rest processes are in the same mode.

Example 2:

as shown in fig. 1, the I T equipment-level liquid cooling system 2 comprises a I T equipment evaporator 5, a I T equipment-level pump heat-driving pipe system 6 and a I T equipment-level natural cooling source system 3, wherein the I T equipment evaporator 5 is directly attached to the I T equipment. I T equipment-level pump heat-driving pipe system 6 utilizes refrigerating working medium in a system pipeline to radiate heat of I T equipment 28I T, I T equipment-level natural cold source system 3 is arranged on I T equipment-level pump heat-driving pipe system 6, and I T equipment-level natural cold source system 3 utilizes a natural cold source to condense the refrigerating working medium in the pipeline.

The I T equipment-level pump heat-driving pipe system 6 comprises a heat regenerator 8 arranged on a pipeline, a power pump 9, a low-pressure refrigeration working medium is arranged in the pipeline, the power pump 9 provides power for the flow of the low-pressure refrigeration working medium in the pipeline, the pipeline passes through the I T equipment-level natural cold source system 3, and the IT equipment-level natural cold source system 3 can condense the high-temperature low-pressure refrigeration working medium in the pipeline.

I T the equipment-level liquid cooling system 2 realizes two working modes according to outdoor temperature change:

mode one: when the outdoor temperature is lower, the condensing unit spray assembly 25 is closed, a fan is started, air with low outdoor temperature enters the condensing unit to cool the refrigerating medium in a pipeline of the I T equipment-level liquid cooling system 2, the refrigerating medium is condensed from a gaseous state to a liquid state, the power pump 9 is used for providing power to drive the refrigerating medium to enter the I T equipment evaporator 5, the I T equipment evaporator 5 absorbs heat emitted by I T equipment, the refrigerating medium is changed from the liquid state to the gaseous state, then the liquid state enters the heat exchanger to perform heat recovery, and finally the refrigerating medium is condensed by the condensing unit to circulate the process. This mode makes full use of the outdoor air for cooling.

Mode two: when the outdoor temperature rises, and the supplied refrigerating capacity of the mode I is insufficient, the spraying component 25 of the condensing unit can be opened on the basis of the mode I, and the refrigerating medium is condensed from a gas state to a liquid state. This mode makes full use of the outdoor air and cooling water for cooling. The water sprayed by the spraying assembly 25 is covered on the surface of the pipeline of the I T equipment-level liquid cooling system 2, and the spraying water greatly improves the heat exchange efficiency by means of wind power.

The cooling and heat dissipation mode of liquid cooling and natural cold source coupling can effectively reduce the energy efficiency loss rate, the natural cold source is utilized to the maximum extent, and meanwhile, the system uses a cabinet mechanical branch under the condition of low temperature in the natural environment, so that the system is in a low energy consumption state in most of the time. The phase change technology is utilized to improve the heat transfer coefficient, fully reduce the heat transfer temperature difference of cold and hot sources, and the freon refrigerating working medium is adopted without leakage risk. Cold water does not need to enter the machine room and the machine cabinet, and a leakage-proof project is not required to be arranged; and no condensation risk is caused by small heat transfer temperature difference.

Example 3:

as shown in fig. 2-3, the tank-level pump heat-driving pipe system and the I T equipment-level pump heat-driving pipe system 6 are respectively provided with a liquid storage branch 16, the liquid storage branch 16 comprises a liquid storage tank 17 and a valve unit, the liquid storage branch 16 is arranged on the tank-level pump heat-driving pipe system and the I T equipment-level pump heat-driving pipe system 6 through the valve unit, and the controller can control the valve unit to be opened and closed so as to control the liquid storage tank 17 to supplement or recycle the refrigerating medium to the tank-level pump heat-driving pipe system and the I T equipment-level pump heat-driving pipe system 6.

In the cabinet pump heat-driving pipe system, less refrigerant is needed in the mode of the compressor 14 of the cabinet mechanical branch, and redundant refrigerant needs to be recovered from the main pipeline to the liquid storage tank 17; compared with the pump heat-driving pipe mode of the cabinet-level pump heat-driving pipe system, more refrigerant is needed, the refrigerant of the liquid storage tank 17 needs to be supplemented to the main pipeline, and for the I T equipment-level liquid cooling system 2, the refrigerant of the liquid storage tank 17 can be supplemented to the main pipeline after being naturally lost in the pipeline.

The liquid storage tank 17 comprises a liquid storage tank 17 body, a connecting port 18 is arranged at the bottom of the liquid storage tank 17 body, an elastic diaphragm 19 is arranged in the liquid storage tank 17, the diaphragm 19 divides the interior of the liquid storage tank 17 into a liquid chamber 20 and an air chamber 21, an air inlet nozzle 22 is arranged in the air chamber 21, the air chamber 21 is positioned at the upper part of the liquid chamber 20, a pressure gauge is further arranged on the liquid storage tank 17 and used for displaying the pressure in the air chamber 21, and the pressure in the air chamber 21 can be regulated to regulate the pressure of refrigerating working media in the liquid chamber 20. After the compressor mode is switched to the heat pipe mode, the pipeline pressure becomes low, at this time, the valve unit is opened, the refrigerant pressure in the liquid storage tank 17 is adjusted by accurately inflating the air chamber 21, and the high-pressure refrigerant in the liquid storage tank 17 is automatically discharged into the main pipeline under a predetermined pressure difference, so that the main pipeline pressure is adjusted.

Example 4:

as shown in fig. 3, the liquid storage tank 17 is further provided with a temperature adjusting structure, and the temperature adjusting structure is used for controlling the temperature of the refrigerating medium. The temperature adjusting structure can further adjust the temperature of the refrigerating working medium to meet the heat dissipation temperature, but the temperature cannot be too low to influence the work of the data center. The temperature regulating structure comprises a cooling coil 23 and a heating element 24. The cooling coil 23 is arranged in the liquid chamber 20 of the liquid storage tank 17 and is used for cooling the liquid storage tank 17, and a cooling source of the cooling coil 23 is a natural cooling source system 3; the heating element 24 is arranged outside the liquid storage tank 17 in a surrounding manner and is used for heating the liquid chamber 20 of the liquid storage tank 17. The water pipe in the condensing unit is also connected with the cooling coil 23, and a valve is arranged at the water inlet of the cooling coil 23.

The temperature sensor is arranged on the pipeline, when the temperature sensor senses that the temperature of the refrigerant after condensation is higher than a preset value, the refrigerant can enter the cooling coil 23 in the liquid storage tank 17 through the water pipe in the condensing unit to cool the temperature inside the liquid storage tank 17, so that the temperature of the refrigerant is reduced, the pressure of the refrigerant in the liquid storage tank 17 is increased, the refrigerant is supplemented into the pipeline, and the temperature is cooled better. When the temperature sensor senses that the temperature of the condensed refrigerant is lower than a preset value, the temperature inside the liquid storage tank 17 is increased by heating the heating element 24, so that the temperature of the refrigerant is increased, the pressure of the refrigerant inside the liquid storage tank 17 is reduced, the refrigerant is recycled into the liquid storage tank 17, and the phenomenon that the working of a data center is influenced due to the fact that the temperature of the refrigerant is too low is avoided.

The embodiments of the present application and the features of the embodiments may be combined without conflict, and the present application is not limited to the specific embodiments described above, which are merely illustrative, not restrictive, and many forms may be made by those of ordinary skill in the art, without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.

Claims (10)

1. A data center wind-liquid mixed cooling system based on active and passive heat dredging technology, which is characterized by comprising:

the cabinet-level liquid cooling system (1), the cabinet-level liquid cooling system (1) is used for radiating a cabinet, the cabinet-level liquid cooling system (1) comprises a cabinet composite liquid cooling system (4) and a cabinet-level natural cold source system (3), the cabinet composite liquid cooling system (4) comprises a cabinet-level pump heat-driving pipe system and a cabinet-level mechanical branch which can be mutually switched, the cabinet-level pump heat-driving pipe system radiates heat to the cabinet by utilizing a refrigerating medium in a system pipeline, the cabinet-level mechanical branch radiates heat by utilizing a compressor (14) to compress the refrigerating medium, the cabinet-level natural cold source system (3) is arranged on the cabinet composite liquid cooling system (4), the cabinet-level natural cold source system (3) condenses the refrigerating medium in the pipeline by utilizing a natural cold source, and the cabinet-level pump heat-driving pipe system and the cabinet-level mechanical branch are applicable to different natural temperatures;

the IT device level liquid cooling system (2), IT device level liquid cooling system (2) are used for cooling IT device in the data cabinet (11), IT device level liquid cooling system (2) include IT device evaporimeter (5), IT device level pump drive heat pipe system (6) and I T equipment level natural cold source system (3), I T equipment evaporimeter (5) directly paste with IT device, and IT device level pump drive heat pipe system (6) utilize the refrigerating medium in the system pipeline to dispel the heat to IT device (28 IT), and IT device level natural cold source system (3) set up on IT device level pump drive heat pipe system (6), and IT device level natural cold source system (3) utilize natural cold source to condense the refrigerating medium in the pipeline.

2. The data center wind-liquid mixed cooling system based on the active and passive heat dredging technology according to claim 1, wherein the cabinet pump heat driving pipe system comprises a cabinet evaporator (7), a heat regenerator (8), a power pump (9) and an electromagnetic valve (10) which are connected through pipelines, the cabinet evaporator (7) is arranged at a data cabinet (11), the cabinet mechanical branch comprises a first branch (12) connected in parallel with the pipeline of the cabinet pump heat driving pipe system and a second branch (13) connected in parallel with two ends of the power pump (9), cooling refrigerating working media are communicated in the pipeline of the cabinet pump heat driving pipe system, a compressor (14) is arranged on the first branch (12), a throttle valve (15) is arranged on the second branch (13), and the electromagnetic valve (10) is used for realizing on-off of the first branch (12) and the second branch (13).

3. The data center wind-liquid mixed cooling system based on the active and passive heat dredging technology according to claim 2, wherein the IT equipment level pump heat driving pipe system (6) comprises a heat regenerator (8) and a power pump (9) which are arranged on a pipeline, a low-pressure refrigeration working medium is arranged in the pipeline, the power pump (9) provides power for the flow of the low-pressure refrigeration working medium in the pipeline, the pipeline passes through the IT equipment level natural cold source system (3), and the IT equipment level natural cold source system (3) can condense the high-temperature low-pressure refrigeration working medium in the pipeline.

4. A data center wind-liquid mixed cooling system based on active and passive heat dredging technology according to claim 3, wherein the tank-level pump heat driving pipe system and the IT equipment-level pump heat driving pipe system (6) are respectively provided with a liquid storage branch (16), the liquid storage branch (16) comprises a liquid storage tank (17) and a valve unit, the liquid storage branch (16) is arranged on the tank-level pump heat driving pipe system and the IT equipment-level pump heat driving pipe system (6) through the valve unit, and the controller can control the valve unit to be opened and closed so as to control the liquid storage tank (17) to supplement or recycle refrigerating working media to the tank-level pump heat driving pipe system and the IT equipment-level pump heat driving pipe system (6).

5. The data center wind-liquid mixing cooling system based on the active and passive heat dredging technology according to claim 4, wherein the liquid storage tank (17) comprises a liquid storage tank (17), a connecting port (18) is arranged at the bottom of the liquid storage tank (17), an elastic diaphragm (19) is arranged in the liquid storage tank (17), the diaphragm (19) divides the interior of the liquid storage tank (17) into a liquid chamber (20) and a gas chamber (21), an air inlet nozzle (22) is arranged in the gas chamber (21), the gas chamber (21) is arranged at the upper part of the liquid chamber (20), a pressure gauge is further arranged on the liquid storage tank (17) and used for displaying the pressure in the gas chamber (21), and the pressure in the gas chamber (21) can be adjusted to adjust the pressure of refrigerating media in the liquid chamber (20).

6. The data center wind-liquid mixed cooling system based on the active and passive heat dredging technology according to claim 5, wherein the liquid storage tank (17) is further provided with a temperature regulating structure for controlling the temperature of the refrigerating medium.

7. The data center wind-liquid hybrid cooling system based on active and passive heat dredging technology according to claim 6, wherein the temperature regulating structure comprises:

the cooling coil (23) is arranged in the liquid chamber (20) of the liquid storage tank (17) and used for cooling working media in the liquid chamber (20) of the liquid storage tank (17), and a cooling source of the cooling coil (23) is a natural cooling source system (3);

the heating piece (24), heating piece (24) enclose and establish in the outside of reservoir (17), be used for the interior working medium heating of liquid chamber (20) of reservoir (17).

8. The data center wind-liquid mixed cooling system based on the active and passive heat dredging technology according to claim 7, wherein the natural cooling source system (3) comprises a condensing unit, a spraying assembly (25) is arranged on the condensing unit, the condensing unit comprises a natural air inlet, an air outlet (26) and a fan, a water pipe is arranged in the condensing unit and is connected with the spraying assembly (25), and the spraying assembly (25) and the natural wind are both used for cooling water in the water pipe.

9. The system for cooling the air-liquid mixture of the data center based on the active and passive heat dredging technology according to claim 8, wherein the water pipe in the condensing unit is also connected with the cooling coil (23), and a valve is arranged at the water inlet of the cooling coil (23).

10. A data center wind-liquid mixing cooling system based on active and passive heat dredging technique as claimed in claim 1, wherein the cabinet is further provided with a wind supply structure (27) for directly radiating heat to the cabinet.