CN204425887U - The server radiating system that liquid cooling apparatus and auxiliary radiating device combine - Google Patents

Abstract

The utility model discloses the server radiating system of a kind of liquid cooling apparatus and auxiliary radiating device combination, comprise liquid cooling server cabinet, described liquid cooling server cabinet comprises rack cabinet and is arranged at the multiple liquid cooling servers in rack cabinet, it is provided with liquid cooling apparatus and carries out direct liquid-cooling heat radiation to liquid cooling server, is also provided with auxiliary radiating device and carries out auxiliary heat dissipation.The utility model high density is freezed, heat exchange efficiency is high, energy consumption is low, can solve hot localised points, floor space is little, reliability is high, noise is little, the life-span is long.

Description

Server cooling system combining liquid cooling device and auxiliary cooling device

technical field

The utility model relates to a heat dissipation system for a server cabinet, in particular to a server heat dissipation system combining a liquid cooling device and an auxiliary heat dissipation device.

Background technique

With the continuous increase of high-density cabinets in the IDC Internet data center computer room, the integration of equipment is getting higher and higher, and the processing capacity is gradually increasing, but the power consumption of the equipment is also increasing, resulting in more heat generated by the equipment in the cabinet. According to statistics, at present, the cabinet servers in large-scale IDC computer rooms in China generate a lot of heat, and basically run 8760h throughout the year. It accounts for about 40%~50% of the overall energy consumption of the data center.

Traditional data room air supply methods include floor air duct air supply, hot and cold aisle isolation air supply, and whole room cooling air supply. Large size, high energy consumption of the air conditioner in the computer room, and high noise. At the same time, the precision air conditioner in the computer room needs repeated humidification and dehumidification operation or a special dehumidifier to control the air humidity and dew point in the computer room to ensure that there is no condensation inside the equipment, which will reduce the cooling efficiency and increase the energy consumption of the computer room air conditioning system. If the heat dissipation problem in the computer room is not solved properly, it will seriously threaten the safe operation of the equipment in the computer room. Therefore, how to effectively reduce the energy consumption of the air-conditioning system in the computer room while meeting the requirements for equipment use is an important issue faced by the air-conditioning industry and the data computer room operation industry.

From the perspective of energy saving, there is currently a scheme that directly introduces outdoor air into the room to cool down the computer room. The advantages are high cooling efficiency, low initial investment, and low energy consumption, but the disadvantage is that the indoor air cleanliness, Humidity is difficult to guarantee, which brings potential safety hazards, and the amount of operation and maintenance in the later period is relatively large. In addition, an air-air honeycomb heat exchanger is also used to indirectly exchange heat between the hot air of the heat pipe and the cold outdoor air, thereby reducing the temperature in the machine room; its advantage is that when using the outdoor cold source, it does not introduce outdoor air and does not affect the air in the machine room. The disadvantage is that the initial investment is relatively high, the structure of the heat exchanger is relatively complicated, it is easy to block, it needs to be cleaned regularly, and the maintenance workload is heavy.

Moreover, with the development of server technology, more and more servers with high power and high heat density are used, and it is an irreversible development trend. At present, the maximum operating power of a single cabinet of some industry users has reached about 10~15kW, but due to The limitation of the heat dissipation efficiency of the air cooling method makes it difficult for the application of high-power servers to exceed 15kW/cabinet.

Liquid cooling is the most efficient and advanced heat dissipation solution developed in recent years. Its principle is to directly pass the liquid heat exchange medium into the server with liquid cooling function, and take the heat generated by the main heating element - the chip (CPU) (accounting for 70-80% of the heat generated by the entire server), the liquid cooling solution is adopted, and in theory, the power of a unit cabinet can even exceed 50kW/above. However, at present, this cooling solution only exists in university laboratories and small-scale internal research in a very small number of enterprises, and has not been practically promoted and applied. One of the most important reasons is that the cabinets of this liquid-cooled server A built-in liquid-cooled water distribution system is required, which requires a special custom design for liquid-cooled server cabinets, and cabinet manufacturers generally produce standardized products. Supporting cabinet products with built-in liquid-cooled water distribution system are provided, especially for the upgrading and transformation of old computer rooms. If you want to change to a liquid-cooled heat dissipation solution, all server cabinets must be replaced with cabinets with a built-in liquid-cooled water distribution system. The cost and cost are very high, which greatly limits the development and popularization of liquid cooling technology. In addition, the liquid cooling system can only take away 70-80% of the heat generated by the server, but 20-30% of the heat still needs to be borne by the auxiliary cooling device. For high-density applications such as liquid-cooled servers with a single cabinet power of more than 50kW , each cabinet needs an auxiliary cooling device to handle more than 10~15kW of heat (20~30% of the total power). If the auxiliary cooling device still adopts the traditional air-cooled heat dissipation method, it is very easy to cause local hot spots in the cabinet, which will affect the performance of the server. Component life is also a problem that cannot be ignored in the promotion and application of high-density liquid-cooled servers.

The Chinese patent with the application number 201010261284.1 and the patent name "Server Cabinet and Its Liquid Cooling System" discloses a server cabinet, which includes a casing, a server inside the casing and a liquid cooling system. Close to the heat conduction plate of the server, the liquid cooling heat dissipation system includes a refrigerator arranged outside the casing and a pipeline thermally connecting the heat conduction plate and the refrigerator, and the heat generated by the server during operation is A heat flow is formed in the casing, and the heat flow is cooled at the heat conducting plate, and the pipelines extend out of the casing and communicate with opposite ends of the refrigerator respectively, so as to connect the heat conducting plate from the server The absorbed heat is transferred to the refrigerator for heat exchange. Although this patent also uses liquid cooling for heat dissipation, the heat of the server cannot be completely taken away by the liquid cooling heat dissipation system, so there will be problems such as local hot spots and short service life.

The Chinese patent with the application number 201210545675.5 and the patent name "A Server Cabinet Cooling System" discloses a server cabinet cooling system, including a liquid cooling box placed inside the server cabinet, a water cooling radiator in the server cabinet, and an air radiator in the cabinet , the first liquid storage tank and the outdoor external cooling system, the liquid cooling box includes a finned heat exchanger, a plate heat exchanger and the first water pump integrated in one box, the hot water side of the plate heat exchanger, the first water pump, The first liquid storage tank and the water-cooled radiator in the server cabinet are connected by pipes to form the first circulation loop, and the external cooling system, the air radiator in the cabinet, the fin heat exchanger and the cold water side of the plate heat exchanger are connected by pipes to form the second circulation loop. loop loop. This patent uses the second circulation loop to take away the heat of the first circulation loop, but the radiator of the first circulation loop conducts heat to the air inside the entire server cabinet, and does not directly conduct heat to the server heating element chip, which leads to heat dissipation in the patent. The efficiency is low and the effect is poor. In addition, the first circulation loop is equipped with the first water pump. The first water pump generates more heat when it is running. It is necessary to set up a special heat exchanger to transfer the heat accumulated by the first water pump. This will undoubtedly burden the system. Thereby further reducing the heat dissipation efficiency of the system.

The Chinese patent "A Control Method for Heat Pipe Secondary Refrigerant Loop Server Cabinet Cooling System" with application number 201410511550.X discloses a control method for the heat pipe secondary refrigerant loop server cabinet cooling system. The system includes a computer room unit, a refrigerant Water supply and return unit and control system, the refrigerant supply and return unit includes a cooling unit and a circulating power unit, the circulating power unit is connected to the machine room unit through the main water supply pipe/return water main pipe of the machine room, and the circulating power unit is connected through the outdoor air outlet The pipe/outdoor liquid return connection pipe is connected to the cooling unit; both the cooling unit and the cycle power unit are connected to the control system. The computer room unit includes a cabinet, more than one heat dissipation fan, multiple servers, multiple heat pipe radiators, and multiple heat pipe radiator heat exchange devices, and the heat dissipation fans, servers, heat pipe radiators, and heat pipe radiator heat exchange devices are all Installed in the cabinet, the heat pipe radiator is closely attached to the server, the heat pipe radiator heat exchange device is connected to the heat pipe radiator, the heat pipe radiator heat exchange device is connected to the main water supply pipe of the machine room through the water supply branch pipe, and the heat pipe radiator heat exchange device The heating device is connected to the return water main pipe of the machine room through the return water branch pipe. The heat pipe radiator of this patent is only attached to the server, and does not perform the most direct heat dissipation on the main heat-generating device. In addition, the system performs two-loop heat exchange through the intermediate heat exchanger, which is also It will inevitably lead to lower heat transfer efficiency than direct heat exchange. In addition, this patent only considers the heat dissipation solution of the main heating element (CPU) of the server, but does not consider the heat dissipation of other heating elements (memory hard disk, etc.), so the heat dissipation solution proposed in this patent is not perfect enough.

Contents of the invention

The purpose of the utility model is to overcome the deficiencies of the prior art, and provide a server cooling system with high cooling efficiency, no local hot spots, and no need to modify the cabinet, which combines a liquid cooling device and an auxiliary cooling device.

The above-mentioned purpose of the utility model is achieved through the following technical solutions:

A server heat dissipation system combining a liquid cooling device and an auxiliary heat dissipation device, including a liquid cooling server cabinet, the liquid cooling server cabinet includes a cabinet body and a plurality of liquid cooling servers arranged in the cabinet body, and a liquid cooling device is provided for The liquid-cooled server performs direct liquid-cooled heat dissipation, and an auxiliary heat dissipation device is also provided for auxiliary heat dissipation of the liquid-cooled server. The utility model adopts the liquid cooling heat dissipation technology for the main refrigeration, and the main and auxiliary refrigeration is combined. On the one hand, the cooling efficiency is high and the effect is good, and there will be no local hot spots. On the other hand, the solution provided by the utility model does not need to modify the cabinet. It provides the possibility of universal use for liquid cooling and heat dissipation.

One solution, the liquid cooling device includes a liquid cooling radiator, a distributor, a current collector and a primary heat exchange medium, the liquid cooling radiator is used to dissipate heat from the server chip, and the distributor is connected through multiple liquid inlets The branch pipe is connected to the liquid cooling radiator, and the liquid cooling radiator is connected to the collector through a plurality of liquid outlet connecting branch pipes. The primary heat exchange medium enters the liquid cooling radiator through the distributor and the liquid inlet connecting branch pipe, and then passes through The liquid outlet connection branch pipe flows out of the liquid cooling radiator and is collected by the collector. The primary heat exchange medium enters the liquid cooling radiator from the distributor through the liquid inlet connection branch pipe, and then enters the collector through the liquid outlet connection branch pipe to form a circulation to take away the heat from the liquid cooling server.

Further, the liquid cooling device is externally installed on the cabinet body. Use fixed or movable installation, preferably fixed installation.

The primary heat exchange medium is tap water, pure water, organic solution, inorganic solution or Freon. Preference is given to using purified water. The liquid inlet connection branch pipe and the liquid outlet connection branch pipe are hard pipes or soft pipes. Soft tubing is preferred.

The liquid cooling radiator is arranged near the server chip, or is in direct contact with the server chip.

The auxiliary heat dissipation device is a door-type cold water heat exchange device, and the door-type cold water heat exchange device includes a cold water heat exchanger, a connecting pipeline, and a secondary heat exchange medium. The cold water heat exchanger is arranged in a liquid-cooled server cabinet or On the liquid cooling device, and load the secondary heat exchange medium through the connecting pipeline. Specifically, the cold water heat exchanger is installed on the front door side or the back door side of the cabinet body, preferably on the back door side; an all-aluminum microchannel heat exchanger or an aluminum fin heat exchanger with a copper tube sleeve can be used, preferably Aluminum finned copper tube heat exchanger. In addition, the cold water heat exchanger can be opened by axial rotation, and the water inlet connecting pipe and the water outlet connecting pipe of the cold water heat exchanger both adopt flexible pipes.

Further, the door-type cold water heat exchange device also includes a fan installed on the air outlet side of the cold water heat exchanger. The fan can be centrifugal, axial flow, mixed flow, preferably axial flow fan.

Furthermore, the door-type cold water heat exchange device also includes a water chiller and a water pump, and the water chiller and water pump are arranged outside the machine room and connected to the cold water heat exchanger through a connecting pipeline.

The chiller sends the secondary heat exchange medium to the cold water heat exchanger through the water pump, and then the cold water heat exchanger flows back to the chiller to form a cycle to take away part of the heat. The secondary heat exchange medium is water or antifreeze solution.

When the system is running, the heat generated by the liquid-cooled server chip in the liquid-cooled server accounts for about 80% of the total heat generated. This part of the heat is absorbed by the liquid-cooled radiator and passed through the liquid-cooled radiator. °C primary heat exchange medium is taken away, so that the internal temperature of the liquid-cooled server chip is kept at 60-70 °C in normal operation. The flow distribution and collection of the primary heat exchange medium of the liquid cooling radiator inside each liquid cooling server is completed by the liquid cooling device: after the primary heat exchange medium with a temperature of about 35~45°C flows into the distributor from the main liquid supply pipe, It enters the liquid cooling radiator through the liquid inlet connection branch pipe, absorbs the heat of the liquid cooling server chip, and becomes a temperature state of 40~50°C, enters the collector through the liquid outlet connection branch pipe, and flows back to the liquid collection main pipe.

The calorific value of other components in the liquid-cooled server accounts for about 20% of the total calorific value. This part of the heat is taken away by the fan of the server itself or the fan of the door-type cold water heat exchange device. After the cold water heat exchanger, the heat of the air flow is absorbed by the secondary heat exchange medium at 15-20°C, so that the temperature of the air flow is re-cooled to about 20-25°C, and then flows into the server to take away the heat of the internal components of the server, and so on. The temperature of the secondary heat exchange medium at 12-15°C inside the cold water heat exchanger rises to 17-20°C after absorbing heat, and flows into the chiller under the action of the circulating power of the water pump. Flow back to the cold water heat exchanger, and so on.

One solution, the liquid cooling device includes a liquid cooling radiator, a distributor, a current collector and a primary heat exchange medium, the liquid cooling radiator is used to dissipate heat from the server chip, and the distributor is connected through multiple liquid inlets The branch pipe is connected to the liquid cooling radiator, and the liquid cooling radiator is connected to the collector through a plurality of liquid outlet connecting branch pipes. The primary heat exchange medium enters the liquid cooling radiator through the distributor and the liquid inlet connecting branch pipe, and then passes through The liquid outlet connection branch pipe flows out of the liquid cooling radiator and is collected by the collector. The primary heat exchange medium enters the liquid cooling radiator from the distributor through the liquid inlet connecting branch pipe, and then enters the collector through the liquid outlet connecting branch pipe to form a circulation to take away the main heat of the liquid cooling server.

Further, the liquid cooling device is installed externally on the cabinet body, which can be fixed or movable, preferably fixed.

The primary heat exchange medium is tap water, pure water, organic solution, inorganic solution or freon, preferably pure water.

The liquid cooling radiator is arranged near the server chip, or is in direct contact with the server chip.

The auxiliary heat dissipation device is a natural cooling water cooling device, and the natural cooling water cooling device includes a cold water heat exchanger, a water pump, an electric regulating water valve, a water ring natural cooling heat exchange device, a water chiller, and a connecting pipe arranged on the liquid cooling device. The water chiller and the chilled water heat exchanger are connected through a connecting pipeline to form a loop, and the secondary heat exchanging medium is loaded through the connecting pipeline. The secondary heat exchange medium enters the door-type cold water heat exchanger from the chiller through the water inlet connection pipe, and after absorbing heat, it flows into the water ring under the action of the circulating power of the water pump to naturally cool the chiller and the chiller to form a cycle. The secondary heat exchange medium is water or antifreeze solution.

Further, the water ring natural cooling heat exchange device includes an axial flow fan and a natural cooling heat exchange coil, and the natural cooling heat exchange coil is connected in series or in parallel on the connecting pipeline.

Specifically, in one case, the connecting pipeline includes a water inlet connecting pipe and a water outlet connecting pipe, and the water pump, the electric regulating water valve, and the water ring natural cooling heat exchange device are sequentially arranged on the water outlet connecting pipe in series, and the water ring The natural cooling heat exchange device includes an axial flow fan and a natural cooling heat exchange coil, and the natural cooling heat exchange coil is connected in series on the water outlet connection pipe. In another case, the water ring natural cooling heat exchange device includes an axial flow fan and a natural cooling heat exchange coil, one end of the natural cooling heat exchange coil is connected to the electric regulating water valve and the other end is connected to the water outlet connecting pipe in parallel At both ends of the chiller. The electric regulating water valve is arranged at the water outlet of the water ring natural cooling heat exchange device. Compared with the two schemes, it is preferable to use series connection, which can obtain longer natural cooling operation time and more significant energy saving effect.

Furthermore, the door-type cold water heat exchange device also includes a fan installed on the air outlet side of the cold water heat exchanger.

The door-type cold water heat exchanger of the natural cooling water cooling device is installed on the front door side or the back door side of the cabinet body, preferably on the back door side; the door type cold water heat exchanger of the natural cooling water cooling device can be axially Turn it on, and the water inlet and outlet pipes of the door-type cold water heat exchanger are made of flexible pipes.

The electric regulating water valve of the natural cooling chiller adopts a two-way valve or a three-way valve, preferably a three-way valve.

When the water ring natural cooling heat exchange device is connected in series on the connecting pipe, the operation method of the server heat dissipation system is as follows:

01) When the ambient temperature is above 20°C, the chiller is turned on, the water ring natural cooling heat exchange device stops operating, the bypass opening of the electric regulating water valve is 0%, and the secondary heat exchange medium does not flow through the water ring for natural cooling The heat exchange device and the axial flow fan are also in a stopped state, and all the cooling capacity of the secondary heat exchange medium is provided by the chiller;

02) When the ambient temperature is 0~20°C, both the chiller and the water ring natural cooling heat exchange device are turned on, the bypass opening of the electric regulating water valve is 100%, and all secondary heat exchange media flow through the water first. The ring natural cooling heat exchange device uses the axial flow fan and the forced convection heat exchange with the natural cooling heat exchange coil to perform heat dissipation and precooling on the secondary heat exchange medium, and the secondary heat exchange medium further flows through the chiller for compensatory cooling to achieve the desired temperature;

03) When the ambient temperature is below 0°C, the chiller stops running, the water ring natural cooling heat exchange device starts to operate, the bypass opening of the electric regulating water valve is kept at 100% first, and all the secondary heat exchange medium flows through The water ring naturally cools the heat exchange device, and adjusts the cooling capacity generated by natural cooling by adjusting the speed of the axial flow fan; the adjustment of the axial flow fan is as follows: when the outlet temperature of the secondary heat exchange medium reaches below 8°C, reduce The speed of the axial flow fan makes the outlet temperature of the secondary heat exchange medium rise; when the temperature of the secondary heat exchange medium outlet reaches 12°C, increase the speed of the axial flow fan to make the outlet temperature of the secondary heat exchange medium drop; If the outlet temperature of the secondary heat exchange medium is between 8 and 12°C, the speed of the axial flow fan remains unchanged; the outlet temperature of the secondary heat exchange medium is adjusted within an appropriate range through the axial flow fan, and the temperature between 8°C and 12°C is optimal;

04) When the ambient temperature is extremely low, the axial fan is at the lowest speed, and the cooling capacity generated by natural cooling is still too large, that is, the outlet temperature of the secondary heat exchange medium is below 12°C, keep the axial fan stable at the lowest speed operation, and control the cooling capacity generated by natural cooling by adjusting the bypass opening of the electric regulating water valve. The adjustment of the electric regulating water valve is as follows: Adjust the bypass opening of the water valve to increase the outlet temperature of the secondary heat exchange medium; The outlet temperature of the heat exchange medium drops; when the outlet temperature of the secondary heat exchange medium is between 8 and 12°C, the bypass opening of the electric regulating water valve remains unchanged. The outlet temperature of the secondary heat exchange medium is adjusted within an appropriate range through the electric regulating water valve, and the optimum range is between 8 and 12°C.

When the water ring natural cooling heat exchange device is connected in parallel to the connecting pipe, the operation method of the server heat dissipation system is as follows:

11) When the ambient temperature is above 0°C, the chiller is turned on, the water ring natural cooling heat exchange device stops operating, the bypass opening of the electric regulating water valve is 0%, and the secondary heat exchange medium does not flow through the water ring for natural cooling The heat exchange device and the axial flow fan are also in a stopped state, and all the cooling capacity of the secondary heat exchange medium is provided by the chiller;

12) When the ambient temperature is below 0°C, the chiller stops running, the water ring natural cooling heat exchange device starts to operate, the bypass opening of the electric regulating water valve is kept at 100% first, and all the secondary heat exchange medium flows through The water ring naturally cools the heat exchange device, and adjusts the cooling capacity generated by natural cooling by adjusting the speed of the axial flow fan; the adjustment of the axial flow fan is as follows: when the outlet temperature of the secondary heat exchange medium reaches below 8°C, reduce The speed of the axial flow fan makes the outlet temperature of the secondary heat exchange medium rise; when the temperature of the secondary heat exchange medium outlet reaches 12°C, increase the speed of the axial flow fan to make the outlet temperature of the secondary heat exchange medium drop; If the outlet temperature of the secondary heat exchange medium is between 8 and 12°C, the speed of the axial flow fan remains unchanged; the outlet temperature of the secondary heat exchange medium is adjusted within an appropriate range through the axial flow fan, and the temperature between 8°C and 12°C is optimal;

13) When the ambient temperature is extremely low, the axial fan is already at the lowest speed, and the cooling capacity generated by natural cooling is still too large, that is, the outlet temperature of the secondary heat exchange medium is below 12°C, keep the axial fan stable at the lowest speed operation, and control the cooling capacity generated by natural cooling by adjusting the bypass opening of the electric regulating water valve. The adjustment of the electric regulating water valve is as follows: Adjust the bypass opening of the water valve to increase the outlet temperature of the secondary heat exchange medium; The outlet temperature of the heat exchange medium drops; when the outlet temperature of the secondary heat exchange medium is between 8 and 12°C, the bypass opening of the electric regulating water valve remains unchanged. The outlet temperature of the secondary heat exchange medium is adjusted within an appropriate range through the electric regulating water valve, and the optimum range is between 8 and 12°C.

In one solution, the liquid cooling device includes a liquid cooling radiator, a distributor, a collector, and a liquid cooling heat exchange medium, the liquid cooling radiator is used to dissipate heat from the server chip, and the distributor enters the liquid through a plurality of The connecting branch pipe is connected to the liquid cooling radiator, and the liquid cooling radiator is connected to the collector through a plurality of liquid outlet connecting branch pipes, and the liquid cooling heat exchange medium enters the liquid cooling radiator through the distributor and the liquid inlet connecting branch pipe, Then flow out of the liquid-cooled radiator through the liquid outlet connection branch pipe and be collected by the collector. The liquid-cooled heat exchange medium enters the liquid-cooled radiator from the distributor through the liquid-inlet connecting branch pipe, and then enters the collector through the liquid-outlet connecting branch pipe to form a circulation to take away the main heat of the liquid-cooled server. The liquid cooling heat exchange medium is tap water, pure water, organic solution, inorganic solution or freon. Preference is given to using purified water.

Further, the liquid cooling radiator is arranged near the server chip, or is in direct contact with the server chip.

The auxiliary cooling device is a heat pipe air conditioner, the heat pipe air conditioner is an air-cooled natural cooling heat pipe air conditioner, and the air-cooled natural cooling heat pipe air conditioner includes an evaporator, a condenser, an air-cooled natural cooling heat exchange device, an electrically adjustable refrigerant valve, a cold water machine, connecting pipelines and internal and external circulation heat exchange medium, the evaporator and condenser are connected through connection pipelines to form an inner loop, and the internal circulation heat exchange medium is loaded through the connection pipeline of the inner loop, and the cold water The machine and the condenser are connected by a connecting pipeline to form an outer loop, and the external circulation heat exchange medium is loaded through the connecting pipeline of the outer loop. The liquid internal circulation heat exchange medium inside the evaporator absorbs heat and evaporates into a gaseous state, and flows into the condenser along the connecting air pipe under the power of the heat pipe cycle, and the heat is taken away by the low-temperature external circulation heat exchange medium provided by the water pump, and condenses into a liquid state After the working fluid flows back to the evaporator along the connecting liquid pipe to form a cycle. The internal circulation heat exchange medium is Freon, preferably R134a Freon with environmental protection and low operating pressure; the external circulation heat exchange medium is water or antifreeze solution, preferably ethylene glycol solution in areas where the lowest temperature will be below zero Antifreeze solution.

Further, the air-cooled natural cooling heat pipe air conditioner also includes a fan and a water pump, the fan is arranged on the air outlet side of the evaporator, and the water pump is arranged between the condenser and the chiller.

Furthermore, the water ring natural cooling heat exchange device includes an axial flow fan and a natural cooling heat exchange coil, and the natural cooling heat exchange coil is connected in series or parallel to the connecting pipeline of the inner loop.

Specifically, in one case, the connecting pipeline of the inner loop includes a connecting gas pipe and a connecting liquid pipe, and the evaporator and the condenser are respectively connected to form an inner loop through connecting the gas pipe and the connecting liquid pipe, and the connecting gas pipe is provided with An air-cooled natural cooling heat exchange device and an electric adjustable refrigerant valve, the electric adjustable refrigerant valve is arranged on the inlet or outlet pipeline of the air-cooled natural cooling heat exchange device, preferably installed on the outlet pipeline of the air-cooled natural cooling heat exchange device.

In another case, the connecting pipeline of the inner loop includes a connecting gas pipe and a connecting liquid pipe, the evaporator and the condenser are respectively connected to form an inner loop by connecting the gas pipe and the connecting liquid pipe, and the air-cooled natural cooling heat exchange device One end is set on the connecting air pipe, and the other end is set on the connecting liquid pipe. The electric adjustable refrigerant valve is set on the inlet or outlet pipeline of the air-cooled natural cooling heat exchange device, preferably installed on the outlet pipeline.

It is preferable to adopt the first case, which can obtain longer natural cooling operation time and more significant energy saving effect.

The liquid cooling device is installed externally on the cabinet body, and adopts fixed or movable installation, preferably fixed installation.

The liquid inlet connection branch pipe and the liquid inlet connection branch pipe of the liquid cooling device can use hard pipes or soft pipes, preferably soft pipes. The evaporator of the air-cooled natural cooling heat pipe air conditioner is installed on the front door side or the back door side of the cabinet body, preferably on the back door side; The connecting pipes are made of flexible pipes.

The electrically adjustable refrigerant valve of the air-cooled natural cooling heat pipe air conditioner adopts a two-way valve or a three-way valve, preferably a three-way valve.

When the water ring natural cooling heat exchange device is connected in series on the connecting pipeline of the inner loop, the operation method of the server heat dissipation system is as follows:

11) When the ambient temperature is above 20°C, the chiller is turned on, the air-cooled natural cooling heat exchange device stops operating, the bypass opening of the electrically adjustable refrigerant valve is 0%, and the internal circulation heat exchange medium does not flow through the air-cooled natural cooling The heat exchange device and the axial flow fan are also in a stopped state, and the cooling capacity required for the condensation of the internal circulation heat exchange medium is all provided by the condenser and the chiller through secondary heat exchange;

12) When the ambient temperature is 0~20°C, the water chiller and the air-cooled natural cooling heat exchange device are both turned on and operated, the bypass opening of the electrically adjustable refrigerant valve is 100%, and all the internal circulation heat exchange medium flows through the air first. The cold natural cooling heat exchange device uses the axial flow fan and the forced convection heat exchange with the natural cooling heat exchange coil to perform heat dissipation and precooling on the internal circulation heat exchange medium, and the internal circulation heat exchange medium further flows through the condenser, and the remaining condensation heat The low-temperature external circulation heat exchange medium provided by the chiller and water pump is taken away;

13) When the ambient temperature is below 0°C, the chiller stops running, the air-cooled natural cooling heat exchange device starts to operate, the bypass opening of the electrically adjustable refrigerant valve is kept at 100%, and all internal circulation heat exchange medium flows through The air-cooled natural cooling heat exchange device, and adjust the cooling capacity generated by natural cooling by adjusting the speed of the axial flow fan; the adjustment of the axial flow fan is as follows: when the outlet temperature of the internal circulation heat exchange medium reaches below 8°C, reduce The speed of the axial flow fan makes the temperature of the outlet of the internal circulation heat exchange medium rise; when the temperature of the outlet of the internal circulation heat exchange medium reaches above 12°C, the speed of the axial flow fan is increased to reduce the temperature of the outlet of the internal circulation heat exchange medium; If the outlet temperature of the internal circulation heat exchange medium is between 8 and 12°C, the speed of the axial flow fan remains unchanged; the outlet temperature of the internal circulation heat exchange medium is adjusted within an appropriate range through the axial flow fan, and the temperature between 8°C and 12°C is optimal;

14) When the ambient temperature is extremely low, the axial fan is already at the lowest speed, and the cooling capacity generated by natural cooling is still too large, that is, the outlet temperature of the internal circulation heat exchange medium is below 12°C, keep the axial fan stable at the lowest speed operation, and control the cooling capacity generated by natural cooling by adjusting the bypass opening of the electric adjustable refrigerant valve. The adjustment of the electric adjustable refrigerant valve is as follows: Adjust the bypass opening of the refrigerant valve to increase the outlet temperature of the heat exchange medium in the internal circulation; The outlet temperature of the heat exchange medium rises; when the outlet temperature of the internal circulation heat exchange medium is between 8°C and 12°C, the bypass opening of the electrically adjustable refrigerant valve remains unchanged. Adjust the outlet temperature of the internal circulation heat exchange medium within an appropriate range through the electric adjustment of the refrigerant valve, and the optimum range is between 8 and 12 °C.

When the water ring natural cooling heat exchange device is connected in parallel to the connecting pipeline of the inner loop, the operation method of the server heat dissipation system is as follows:

21) When the ambient temperature is above 0°C, the chiller is turned on, the air-cooled natural cooling heat exchange device stops operating, the bypass opening of the electrically adjustable refrigerant valve is 0%, and the internal circulation heat exchange medium does not flow through the air-cooled natural cooling The heat exchange device and the axial flow fan are also in a stopped state, and the cooling capacity required for the condensation of the internal circulation heat exchange medium is all provided by the condenser and the chiller through secondary heat exchange;

22) When the ambient temperature is below 0°C, the chiller stops running, the air-cooled natural cooling heat exchange device starts to operate, the bypass opening of the electrically adjustable refrigerant valve is kept at 100%, and all the internal circulation heat exchange medium flows through The air-cooled natural cooling heat exchange device, and adjust the cooling capacity generated by natural cooling by adjusting the speed of the axial flow fan; the adjustment of the axial flow fan is as follows: when the outlet temperature of the internal circulation heat exchange medium reaches below 8°C, reduce The speed of the axial flow fan makes the temperature of the outlet of the internal circulation heat exchange medium rise; when the temperature of the outlet of the internal circulation heat exchange medium reaches above 12°C, the speed of the axial flow fan is increased to reduce the temperature of the outlet of the internal circulation heat exchange medium; If the outlet temperature of the internal circulation heat exchange medium is between 8 and 12°C, the speed of the axial flow fan remains unchanged; the outlet temperature of the internal circulation heat exchange medium is adjusted within an appropriate range through the axial flow fan, and the temperature between 8°C and 12°C is optimal;

23) When the ambient temperature is extremely low, the axial fan is already at the lowest speed, and the cooling capacity generated by natural cooling is still too large, that is, the outlet temperature of the internal circulation heat exchange medium is below 12°C, keep the axial fan stable at the lowest speed operation, and control the cooling capacity generated by natural cooling by adjusting the bypass opening of the electric adjustable refrigerant valve. The adjustment of the electric adjustable refrigerant valve is as follows: Adjust the bypass opening of the refrigerant valve to increase the outlet temperature of the heat exchange medium in the internal circulation; The outlet temperature of the heat exchange medium drops; when the outlet temperature of the internal circulation heat exchange medium is between 8°C and 12°C, the bypass opening of the electrically adjustable refrigerant valve remains unchanged. Adjust the outlet temperature of the internal circulation heat exchange medium within an appropriate range through the electric adjustment of the refrigerant valve, and the optimum range is between 8 and 12 °C.

One solution, the liquid cooling device includes a liquid cooling radiator, a distributor, a current collector and a primary heat exchange medium, the liquid cooling radiator is used to dissipate heat from the server chip, and the distributor is connected through multiple liquid inlets The branch pipe is connected to the liquid cooling radiator, and the liquid cooling radiator is connected to the collector through a plurality of liquid outlet connecting branch pipes. The primary heat exchange medium enters the liquid cooling radiator through the distributor and the liquid inlet connecting branch pipe, and then passes through The liquid outlet connection branch pipe flows out of the liquid cooling radiator and is collected by the collector. The primary heat exchange medium enters the liquid cooling radiator from the distributor through the liquid inlet connecting branch pipe, and then enters the collector through the liquid outlet connecting branch pipe to form a circulation to take away the main heat of the liquid cooling server. The primary heat exchange medium is tap water, pure water, organic solution, inorganic solution or Freon, preferably pure water.

Further, the liquid cooling device is externally installed on the cabinet body, and adopts fixed or movable installation, preferably fixed installation. The liquid cooling radiator is arranged near the server chip, or is in direct contact with the server chip.

The auxiliary cooling device is a heat pipe air conditioner, the heat pipe air conditioner is a door type heat pipe air conditioner, and the door type heat pipe air conditioner includes an evaporator, a condenser, a connecting pipe and a secondary heat exchange medium, and the evaporator and the condenser are connected through The pipelines are connected to form a loop, and the secondary heat exchange medium is loaded through the connecting pipelines.

Further, the door-type heat pipe air conditioner also includes a chiller and a water pump, and the chiller and the water pump are arranged outside the machine room and connected to the condenser through a connecting pipeline. The secondary heat exchange medium enters the evaporator from the chiller through the connecting liquid pipe, absorbs heat and evaporates into a gaseous state, flows into the condenser along the connecting gas pipe under the power of the heat pipe cycle and condenses into a liquid working medium, then flows back along the connecting liquid pipe to evaporate The device forms a cycle. The secondary heat exchange medium is Freon, preferably R134a Freon which is environmentally friendly and has low operating pressure.

Furthermore, the door type heat pipe air conditioner also includes a fan installed on the air outlet side of the evaporator.

The liquid inlet connection branch pipe and the liquid outlet connection branch pipe of the liquid cooling device adopt hard pipes or soft pipes, preferably soft pipes, and the connecting pipes of the evaporator all adopt soft pipes.

The fan adopts a centrifugal, axial flow or mixed flow fan, preferably an axial flow fan; the evaporator adopts an all-aluminum microchannel heat exchanger or an aluminum-fin heat exchanger with a copper tube sleeve, preferably an all-aluminum microchannel Heat exchanger; the evaporator is preferably installed on the side of the back door and can be opened by pivoting; the condenser adopts a plate heat exchanger, a shell-and-tube heat exchanger or a sleeve-and-tube heat exchanger, preferably a plate heat exchanger The chiller is an air-cooled chiller, a water-cooled chiller or an evaporative condensation chiller, preferably a plate heat exchanger.

When the server cabinet cooling system combined with door-type heat pipe air conditioner and liquid cooling device is running, the heat generated by the liquid-cooled server chip in the liquid-cooled server accounts for about 80% of the total heat generated. This part of the heat is absorbed by the liquid-cooled radiator and passed through The primary heat exchange medium with a temperature of about 35-45°C flowing through the liquid-cooled radiator is taken away, so that the internal temperature of the liquid-cooled server chip 3 is maintained at a normal operating state of 60-70°C. The flow distribution and collection of the primary heat exchange medium of the liquid cooling radiator inside each liquid cooling server 2 is completed by the liquid cooling device: the primary heat exchange medium with a temperature of about 35~45°C flows into the distributor from the main liquid supply pipe , enter the liquid cooling radiator through the liquid inlet connecting branch pipe, absorb the heat of the liquid cooling server chip, and become a temperature state of 40~50°C, enter the collector through the liquid outlet connecting branch pipe, and flow back to the liquid collecting main pipe.

The calorific value of other components in the liquid-cooled server accounts for about 20% of the total calorific value. This part of the heat is taken away by the server’s own fan or the air flow generated by the fan of the door-type heat pipe air conditioner. After passing through the evaporator of the door-type heat pipe air conditioner, The heat of the air flow is absorbed by the secondary heat exchange medium at 15~20°C, so that the temperature of the air flow is recooled to about 20~25°C, and then flows into the server to take away the heat of the internal components of the server, and so on. The liquid secondary heat exchange medium inside the evaporator absorbs heat and evaporates into a gaseous state. Under the power of the heat pipe cycle, it flows into the condenser along the connecting air pipe. The heat is taken away by the low-temperature frozen water provided by the chiller and the water pump, and condenses into a liquid working fluid. After that, it flows back to the evaporator along the connecting liquid pipe, and so on.

In one solution, the liquid cooling device includes a liquid cooling radiator, a distributor, a collector, and a liquid cooling heat exchange medium, the liquid cooling radiator is used to dissipate heat from the server chip, and the distributor enters the liquid through a plurality of The connecting branch pipe is connected to the liquid cooling radiator, and the liquid cooling radiator is connected to the collector through a plurality of liquid outlet connecting branch pipes, and the liquid cooling heat exchange medium enters the liquid cooling radiator through the distributor and the liquid inlet connecting branch pipe, Then flow out of the liquid-cooled radiator through the liquid outlet connection branch pipe and be collected by the collector. The liquid-cooled heat exchange medium enters the liquid-cooled radiator from the distributor through the liquid-inlet connecting branch pipe, and then enters the collector through the liquid-outlet connecting branch pipe to form a circulation to take away the main heat of the liquid-cooled server. The liquid-cooled heat exchange medium is tap water, pure water, organic solution, inorganic solution or freon, preferably pure water.

The liquid cooling radiator is arranged near the server chip, or is in direct contact with the server chip.

The auxiliary cooling device is a heat pipe air conditioner, the heat pipe air conditioner is a water ring natural cooling heat pipe air conditioner, and the water ring natural cooling heat pipe air conditioner includes an evaporator, a water ring natural cooling heat exchange device, an electrically adjustable refrigerant valve, a condenser, a cold water machine, connecting pipelines and internal and external circulation heat exchange medium, the evaporator and condenser are connected through connection pipelines to form an inner loop, and the internal circulation heat exchange medium is loaded through the connection pipeline of the inner loop, and the cold water The machine and the condenser are connected by a connecting pipeline to form an outer loop, and the external circulation heat exchange medium is loaded through the connecting pipeline of the outer loop.

Further, the water ring natural cooling heat pipe air conditioner also includes a fan and a water pump, the fan is arranged on the air outlet side of the evaporator, and the water pump is arranged between the condenser and the water chiller.

Furthermore, the water ring natural cooling heat exchange device includes an axial flow fan and a natural cooling heat exchange coil, the natural cooling heat exchange coil is connected in series or in parallel on the connecting pipeline of the outer loop, and the electric adjustment The refrigerant valve is arranged on the inlet or outlet pipeline of the water ring natural cooling heat exchange device.

Specifically, in one case, the connecting pipeline of the inner loop includes a connecting gas pipe and a connecting liquid pipe, and the evaporator and the condenser are respectively connected by connecting the gas pipe and the connecting liquid pipe to form an inner loop, and the connecting pipeline of the outer loop It includes a liquid inlet pipe and a liquid outlet pipe. The condenser and the chiller are respectively connected through the liquid inlet pipe and the liquid outlet pipe to form an outer loop. The water ring natural cooling heat exchange device is connected in series on the liquid inlet pipe. The electric The regulating refrigerant valve is arranged on the inlet or outlet pipeline of the air-cooled natural cooling heat exchange device, preferably installed on the outlet pipeline.

In another case, the connecting pipeline of the inner loop includes a connecting gas pipe and a connecting liquid pipe. Liquid pipe and liquid outlet pipe, the condenser and the chiller are respectively connected through the liquid inlet pipe and the liquid outlet pipe to form an outer loop, one end of the water ring natural cooling heat exchange device is connected to the liquid inlet pipe, and the other end is connected to the On the outlet pipe, the electric adjustable refrigerant valve is arranged on the inlet or outlet pipeline of the air-cooled natural cooling heat exchange device, preferably installed on the outlet pipeline.

It is preferable to adopt the first case, which can obtain longer natural cooling operation time and more significant energy saving effect.

The liquid internal circulation heat exchange medium inside the evaporator absorbs heat and evaporates into a gaseous state, and flows into the condenser along the connecting air pipe under the power of the heat pipe cycle, and the heat is taken away by the low-temperature external circulation heat exchange medium provided by the water pump, and condenses into a liquid state After the working fluid flows back to the evaporator along the connecting liquid pipe to form a cycle. The internal circulation heat exchange medium is Freon, preferably R134a Freon with environmental protection and low operating pressure; the external circulation heat exchange medium is water or antifreeze solution, preferably ethylene glycol solution in areas where the lowest temperature will be below zero Antifreeze solution.

The liquid cooling device is installed externally on the cabinet body, and adopts fixed or movable installation, preferably fixed installation.

The liquid inlet connection branch pipe and the liquid inlet connection branch pipe of the liquid cooling device can use hard pipes or soft pipes, preferably soft pipes. The evaporator of the air-cooled natural cooling heat pipe air conditioner is installed on the front door side or the back door side of the cabinet body, preferably on the back door side; The connecting pipes are made of flexible pipes.

The electrically adjustable refrigerant valve of the air-cooled natural cooling heat pipe air conditioner adopts a two-way valve or a three-way valve, preferably a three-way valve.

When the water ring natural cooling heat exchange device is connected in series on the connecting pipeline of the outer loop, the operation method of the server heat dissipation system is as follows:

31) When the ambient temperature is above 20°C, the chiller is turned on, the water ring natural cooling heat exchange device stops operating, the bypass opening of the electric regulating water valve is 0%, and the external circulation heat exchange medium does not flow through the water ring for natural cooling The heat exchange device and the axial flow fan are also in a stopped state, and all the cooling capacity of the external circulation heat exchange medium is provided by the chiller;

32) When the ambient temperature is 0~20°C, the chiller and the water ring natural cooling heat exchange device are both turned on and running, the bypass opening of the electric regulating water valve is 100%, and all the external circulation heat exchange medium flows through the water first. The ring natural cooling heat exchange device uses the axial flow fan and the forced convection heat exchange with the natural cooling heat exchange coil to perform heat dissipation and pre-cooling of the external circulation heat exchange medium, and the external circulation heat exchange medium further flows through the chiller for compensatory cooling to achieve the desired temperature. required temperature;

33) When the ambient temperature is below 0°C, the water machine stops running, the water ring natural cooling heat exchange device starts to operate, the bypass opening of the electric regulating water valve is kept at 100%, and all the external circulation heat exchange medium flows through The water ring naturally cools the heat exchange device, and adjusts the cooling capacity generated by natural cooling by adjusting the speed of the axial flow fan; The speed of the axial flow fan increases the outlet temperature of the heat transfer medium of the external circulation; when the temperature of the heat exchange medium outlet of the external circulation reaches above 12°C, the speed of the axial flow fan is increased to decrease the temperature of the heat exchange medium outlet of the external circulation; If the outlet temperature of the heat exchange medium in the external circulation is between 8 and 12°C, the speed of the axial flow fan remains unchanged; the temperature at the exit of the heat exchange medium in the external circulation is adjusted within an appropriate range through the axial flow fan, and the temperature between 8°C and 12°C is optimal;

34) When the ambient temperature is extremely low, the axial fan is already at the lowest speed, and the cooling capacity generated by natural cooling is still too large, that is, the outlet temperature of the heat exchange medium of the external circulation is below 12°C, keep the axial fan stable at the lowest speed and control the cooling capacity generated by natural cooling by adjusting the bypass opening of the electrically adjustable refrigerant valve. The adjustment of the electrically adjustable refrigerant valve is as follows: Adjust the bypass opening of the refrigerant valve to increase the outlet temperature of the heat exchange medium of the outer circulation; The outlet temperature of the heat exchange medium drops; when the outlet temperature of the heat exchange medium in the external circulation is between 8 and 12°C, the bypass opening of the electrically adjustable refrigerant valve remains unchanged. Adjust the outlet temperature of the external circulation heat exchange medium within an appropriate range through the electric adjustment of the refrigerant valve, and the optimum range is between 8 and 12 °C.

When the water ring natural cooling heat exchange device is connected in parallel on the connecting pipeline of the outer loop, the operation method of the server heat dissipation system is as follows:

41) When the ambient temperature is above 0°C, the chiller is turned on, the water ring natural cooling heat exchange device stops operating, the bypass opening of the electric regulating water valve is 0%, and the external circulation heat exchange medium does not flow through the water ring for natural cooling The heat exchange device and the axial flow fan are also in a stopped state, and all the cooling capacity of the external circulation heat exchange medium is provided by the chiller;

42) When the ambient temperature is below 0°C, the chiller stops running, the water ring natural cooling heat exchange device starts to operate, the bypass opening of the electric regulating water valve is kept at 100%, and all the external circulation heat exchange medium flows through The water ring naturally cools the heat exchange device, and adjusts the cooling capacity generated by natural cooling by adjusting the speed of the axial flow fan; The speed of the axial flow fan increases the outlet temperature of the heat transfer medium of the external circulation; when the temperature of the heat exchange medium outlet of the external circulation reaches above 12°C, the speed of the axial flow fan is increased to decrease the temperature of the heat exchange medium outlet of the external circulation; If the outlet temperature of the heat exchange medium in the external circulation is between 8 and 12°C, the speed of the axial flow fan remains unchanged; the temperature at the exit of the heat exchange medium in the external circulation is adjusted within an appropriate range through the axial flow fan, and the temperature between 8°C and 12°C is optimal;

43) When the ambient temperature is extremely low, the axial fan is already at the lowest speed, and the cooling capacity generated by natural cooling is still too large, that is, the outlet temperature of the heat exchange medium of the external circulation is below 12°C, keep the axial fan stable at the lowest speed and control the cooling capacity generated by natural cooling by adjusting the bypass opening of the electrically adjustable refrigerant valve. The adjustment of the electrically adjustable refrigerant valve is as follows: Adjust the bypass opening of the refrigerant valve to increase the outlet temperature of the heat exchange medium of the outer circulation; The outlet temperature of the heat exchange medium drops; when the outlet temperature of the heat exchange medium in the external circulation is between 8 and 12°C, the bypass opening of the electrically adjustable refrigerant valve remains unchanged. Adjust the outlet temperature of the heat exchange medium of the external circulation in an appropriate range through the electric adjustment of the refrigerant valve, and it is optimal between 8 and 12°C;

In one solution, the liquid cooling device includes an internal circulation system and an external circulation system, and the internal circulation system includes a liquid heat transfer pipe arranged inside the server, an intermediate heat exchanger, an internal circulation liquid inlet pipe, and an internal circulation liquid outlet pipe, The intermediate heat exchanger is connected to the liquid heat pipe through the inner circulation liquid inlet pipe and the inner circulation liquid outlet pipe to form a loop, and the inner circulation liquid inlet pipe is also provided with a pressure replenishment device and a first circulating liquid pump; The external circulation system is a loop formed by sequentially connecting the cooling tower, the liquid tank, the second circulating liquid pump, and the intermediate heat exchanger. The internal and external circulation systems realize heat transfer through the intermediate heat exchanger. Furthermore, water is used as the refrigerant in both the inner and outer circulation systems and the inner and outer loops of the outer circulation system.

The liquid heat pipe is a heat pipe part, one end of which is directly in contact with the server chip for heat transfer, and the other end is connected to the internal circulation system for heat exchange. The multiple liquid heat pipes are connected in parallel to the internal circulation system. The server liquid heat pipe is filled with refrigerant, which is a gas at normal temperature and pressure. One end directly contacts the server chip for heat transfer, and the other end exchanges heat with the liquid refrigerant in the internal circulation system. Since various Electronic components, in order to prevent the circulation system liquid from leaking to the electronic components, a liquid-proof partition is installed in the server cabinet to protect and isolate the two ends of the liquid heat pipes of each server. During operation, natural convection heat exchange is performed through the circulation of the refrigerant in the inner circulation loop, and the heat generated by the server chip is continuously dissipated into the environment. The heat pipe heat exchange component is used for indirect cooling between the server chip and the external liquid cooling device, which can prevent the liquid from entering the server directly and reduce the chance of server damage caused by liquid system leakage.

During operation, the internal circulation system takes away the heat transferred from the server chip to the liquid heat pipe, and the heat absorbed by the external circulation system is carried away by the external circulation system.

Furthermore, the auxiliary cooling device is more than one air-cooled inter-row air conditioner, which is installed side by side with the server cabinet. The plurality of servers are installed side by side in server cabinets, and adjacent server cabinets are installed opposite to each other to form alternate cold aisles and hot aisles. The air-cooled inter-row air conditioner supplies air from the cold aisle and returns air from the hot aisle. The inter-row air conditioner cools the air, and then the low-temperature air takes away the remaining heat of the server; the heating and humidifying functions of the air-cooled inter-row air conditioner can adjust the humidity of the computer room.

The first or second circulating liquid pump is a variable frequency liquid pump or a fixed frequency liquid pump. The first or second circulating liquid pump provides power to drive the fluid flow in the pipeline. The intermediate heat exchanger is a plate heat exchanger.

Compared with the prior art, the beneficial effects of the utility model are as follows:

(1) Realize the separate design of the server cabinet and the liquid cooling water distribution device. The cabinet does not need to be customized. A liquid cooling device with a water distribution system can be independently installed on the standard cabinet body to make it capable of providing liquid for the liquid cooling server. The distribution and collection functions of the cold heat exchange medium are conducive to the practical promotion of liquid cooling and heat dissipation technology.

(2) Liquid cooling technology is used for main refrigeration to achieve ultra-high-density refrigeration and ultra-high energy-saving operation. It only needs to provide 35~45℃ heat exchange medium (such as pure water) to complete, without any compressor refrigeration or other Mechanical refrigeration devices or systems.

(3) Auxiliary cooling, completely dry operation, no condensed water generation, avoiding the loss of dehumidification and humidification, short air supply distance, high-efficiency operation of the fan, and even fanless operation (heat dissipation through the server's own fan), and Effectively solve the problem of local overheating and hot spots in the server cabinet.

(4) Applying natural cooling technology, making full use of natural cooling sources in transitional seasons and winters to provide cooling capacity to the auxiliary heat dissipation system, the energy saving effect is very significant.

(5) The design of the whole system is simple, the investment is low, and it hardly occupies any space in the computer room, which improves the utilization rate of the computer room.

(6) The system does not need a power device inside the computer room, runs without noise, is safe and environmentally friendly, and realizes the purpose of high efficiency, energy saving, safe and reliable operation of the data computer room.

Description of drawings

Fig. 1 is the structure and schematic diagram of principle of embodiment 1;

Among them, 1. Cabinet body; 2. Liquid-cooled server; 3. Liquid-cooled server chip; 4. Liquid-cooled radiator; 5. Current collector; 6. Distributor; Heater; 9. Fan; 13. Water pump; 14. Chiller; 15. Primary heat exchange medium; 16. Secondary heat exchange medium; 17. Outlet connection branch pipe; Ⅰ. Liquid-cooled server cabinet; Ⅱ. Liquid-cooled device ; Ⅲ, door cold water heat exchange device.

Fig. 2 is the structure and schematic diagram of principle of embodiment 2;

Among them, 1. Cabinet body; 2. Liquid-cooled server; 3. Liquid-cooled server chip; 4. Liquid-cooled radiator; 5. Current collector; 6. Distributor; Heater; 9. Fan; 11. Outlet connection pipe; 12. Inlet connection pipe; 13. Water pump; 14. Chiller; 15. Primary heat exchange medium; 16. Secondary heat exchange medium; 17. Outlet connection branch pipe ;18. Water ring natural cooling heat exchange device; 19. Axial fan; 20. Natural cooling heat exchange coil; 21. Electric regulating water valve; Ⅰ. Liquid cooling server cabinet; Ⅱ. Liquid cooling device; Ⅶ. Natural cooling Chiller.

Fig. 3 is the structure and schematic diagram of principle of embodiment 3;

Among them, 1. Cabinet body; 2. Liquid-cooled server; 3. Liquid-cooled server chip; 4. Liquid-cooled radiator; 5. Current collector; 6. Distributor; Heater; 9. Fan; 11. Water outlet connection pipe; 12. Water inlet connection pipe; 13. Water pump; 14. Chiller; 15. Liquid-cooled heat exchange medium; 16. Secondary heat exchange medium; 17. Liquid outlet connection Branch pipe; 18. Water ring natural cooling heat exchange device; 19. Axial fan; 20. Natural cooling heat exchange coil; 21. Electric regulating water valve; Ⅰ. Liquid-cooled server cabinet; Ⅱ. Liquid cooling device; Ⅶ. Natural Chill the chiller.

Fig. 4 is the structure and schematic diagram of principle of embodiment 4;

Among them, 1. Cabinet body; 2. Liquid-cooled server; 3. Liquid-cooled server chip; 4. Liquid-cooled radiator; 5. Current collector; 6. Distributor; 7. Inlet connection branch pipe; 9. Fan; 10. Condenser; 13. Water pump; 14. Chiller; 15. Primary heat exchange medium; 16. Secondary heat exchange medium; 17. Outlet connection branch pipe; 25. Evaporator; 26. Connecting liquid pipe; 27. Connection Air pipe; Ⅰ. Liquid-cooled server cabinet; Ⅱ. Liquid-cooled device; Ⅳ. Door type heat pipe air conditioner.

Fig. 5 is the structure and schematic diagram of principle of embodiment 5;

Among them, 1. Cabinet body; 2. Liquid-cooled server; 3. Liquid-cooled server chip; 4. Liquid-cooled radiator; 5. Current collector; 6. Distributor; 10. Condenser; 13. Water pump; 14. Chiller; 17. Outlet connection branch pipe; 18. Air-cooled natural cooling heat exchange device; 19. Axial fan; 20. Natural cooling heat exchange coil; 21. Electric adjustment Refrigerant valve; 22. External circulation heat exchange medium; 23. Liquid cooling heat exchange medium; 24. Internal circulation heat exchange medium; 25. Evaporator; 26 Connecting liquid pipe; 27. Connecting gas pipe; Ⅰ. .Liquid cooling device; Ⅴ. Air-cooled natural cooling heat pipe air conditioner.

Fig. 6 is the structure and schematic diagram of principle of embodiment 6;

Among them, 1. Cabinet body; 2. Liquid-cooled server; 3. Liquid-cooled server chip; 4. Liquid-cooled radiator; 5. Current collector; 6. Distributor; 10. Condenser; 13. Water pump; 14. Chiller; 15. Liquid-cooled heat exchange medium; 17. Outlet connection branch pipe; 18. Air-cooled natural cooling heat exchange device; 19. Axial fan; 20. Natural cooling exchange Heat coil; 21. Electric adjustable refrigerant valve; 22. External circulation heat exchange medium; 23. Liquid cooling heat exchange medium; 24. Internal circulation heat exchange medium; 25. Evaporator; 26 Connect liquid pipe; 27. Connect gas pipe; Ⅰ. Liquid-cooled server cabinet; Ⅱ. Liquid-cooled device; Ⅴ. Air-cooled natural cooling heat pipe air conditioner.

The structure and principle schematic diagram of Fig. 7 embodiment 7;

Among them, 1. Cabinet body; 2. Liquid-cooled server; 3. Liquid-cooled server chip; 4. Liquid-cooled radiator; 5. Current collector; 6. Distributor; 10. Condenser; 13. Water pump; 14. Chiller; 17. Outlet connection branch pipe; 19. Axial fan; 20. Natural cooling heat exchange coil; 21. Electric regulating water valve; 22. External circulation heat exchange medium ;23. Liquid-cooled heat exchange medium; 24. Internal circulation heat exchange medium; 25. Evaporator; 26 Connect liquid pipe; 27. Connect air pipe; 28. Liquid inlet pipe; Heat exchange device; Ⅰ. Liquid cooling server cabinet; Ⅱ. Liquid cooling device; Ⅵ. Water ring natural cooling heat pipe air conditioner.

Fig. 8 is the structure and schematic diagram of principle of embodiment 8;

Among them, 1. Cabinet body; 2. Liquid-cooled server; 3. Liquid-cooled server chip; 4. Liquid-cooled radiator; 5. Current collector; 6. Distributor; ;10. Condenser; 13. Water pump; 14. Chiller; 17. Outlet connection branch pipe; 19. Axial flow fan; 20. Natural cooling heat exchange coil; 21. Electric regulating water valve; Medium; 23. Liquid cooling heat exchange medium; 24. Internal circulation heat exchange medium; 25. Evaporator; 26. Connecting liquid pipe; 27. Connecting gas pipe; 28. Liquid inlet pipe; 29. Liquid outlet pipe; 30. Water ring Natural cooling heat exchange device; Ⅰ. Liquid cooling server cabinet; Ⅱ. Liquid cooling device; Ⅵ. Water ring natural cooling heat pipe air conditioner.

Figure 9 is a schematic diagram of the liquid cooling system of Embodiments 9 and 10;

Fig. 10 is the top view of embodiment 9;

Figure 11 is a top view of Embodiment 10; among them, 000, liquid cooling device; 001, internal circulation liquid outlet pipe; 002, first circulating liquid pump; 003, constant pressure liquid replenishment device; 004, plate heat exchanger; Second circulation liquid pump; 006, liquid tank; 007, cooling tower; 008, air-cooled inter-row air conditioner; 009, internal circulation liquid inlet pipe; 100, server cabinet; 110, cabinet partition; 101, liquid heat pipe; 111 ,server.

Detailed ways

The utility model will be further elaborated below in conjunction with the accompanying drawings and specific embodiments, but the embodiments do not limit the utility model in any form.

Example 1

Example 1

As shown in Figure 1, a server cabinet heat dissipation system combining a door-type cold water heat exchange device and a liquid cooling device includes a liquid-cooled server cabinet I, a liquid cooling device II, and a door-type cold water heat exchange device III. The liquid-cooled server cabinet I includes a cabinet body 1 and a liquid-cooled server 2, and the liquid-cooled server 2 has a liquid-cooled server chip 3 and a liquid-cooled radiator 4 inside. The liquid cooling device II includes a distributor 6 , a collector 5 and connecting branch pipes 7 . The door-type cold water heat exchange device III includes a cold water heat exchanger 8 , a fan 9 , a water pump 13 and a chiller 14 . The distributor 6 and the collector 5 of the liquid cooling device II are respectively connected to the liquid cooling server 2 through the liquid inlet connection branch pipe 7 and the liquid inlet connection branch pipe 17, and the cold water heat exchanger 8 of the door type cold water heat exchange device III Installed on the liquid cooling unit II.

The liquid cooling device II is externally installed on the cabinet body 1, and can be fixed or movable, preferably fixed.

The connecting branch pipe 7 of the liquid cooling device II can be a hard pipe or a soft pipe, preferably a soft pipe. It is tightly connected with the current collector 5.

The cold water heat exchanger 8 of the door type cold water heat exchange device III can be installed on the front door side or the back door side of the cabinet body 1, preferably on the back door side; the cold water heat exchanger 8 of the door type cold water heat exchange device III 8 can be opened by pivoting, and the water inlet connecting pipe and the water outlet connecting pipe of the cold water heat exchanger 8 all adopt flexible pipes.

The fan 9 of the door-type cold water heat exchange device III is installed on the air outlet side of the cold water heat exchanger 8, and the fan 9 can be of centrifugal type, axial flow type, mixed flow type, preferably an axial flow fan; 14. Air-cooled chillers, water-cooled chillers or evaporative condensation chillers can be used, preferably air-cooled chillers.

The primary heat exchange medium 15 of the liquid cooling device II and the liquid cooling server 2 can be tap water, pure water, organic solution, inorganic solution, Freon, preferably pure water.

The secondary heat exchange medium 16 of the door-type cold water heat exchange device III is high-temperature cold water above 12°C.

The cold water heat exchanger 8 of the door-type cold water heat exchange device III can be an all-aluminum microchannel heat exchanger or an aluminum-fin heat exchanger with copper tubes, preferably an aluminum-fin heat exchanger with copper tubes.

When the system is running, the heat generated by the liquid-cooled server chip 3 in the liquid-cooled server 2 accounts for about 80% of the total heat generated. This part of the heat is absorbed by the liquid-cooled radiator 4 and passed through the liquid-cooled radiator. The primary heat exchange medium 15 at about 35-45°C is taken away, so that the internal temperature of the liquid-cooled server chip 3 is maintained at a normal operating state of 60-70°C. The flow distribution and collection of the primary heat exchange medium 15 of the liquid cooling radiator 4 inside each liquid cooling server 2 is completed by the liquid cooling device II: the primary heat exchange medium 15 with a temperature of about 35~45°C flows from the main liquid supply pipeline After flowing into the distributor 6, it enters the liquid cooling radiator 4 through the liquid inlet connecting branch pipe 7, and after absorbing the heat of the liquid cooling server chip 3, it becomes in a temperature state of 40~50°C, and enters the current collector 5 through the liquid outlet connecting branch pipe 17. Flow back to the liquid collection main.

The calorific value of other components in the liquid-cooled server 2 accounts for about 20% of the total calorific value. This part of the heat is taken away by the server’s own fan or the air flow generated by the fan 9 of the door-type cold water heat exchange device III. After the cold water heat exchanger 8 of the heating device III, the heat of the air flow is absorbed by the secondary heat exchange medium 16 at 15-20°C, so that the temperature of the air flow is re-cooled to about 20-25°C, and flows into the server again to take away the internal components of the server heat, and so on. The secondary heat exchange medium 16 at 12-15°C inside the cold water heat exchanger 8 absorbs heat, and the temperature rises to 17-20°C, and flows into the chiller 14 under the action of the circulating power of the water pump 13 to cool down again to a low temperature of 12-15°C After the working medium, it flows back to the cold water heat exchanger 8, and so circulates.

Example 2

As shown in Figure 2, a server heat dissipation system combining a liquid cooling device and an auxiliary heat dissipation device includes a liquid cooling server cabinet I, a liquid cooling device II and a natural cooling water cooling device VII. The liquid-cooled server cabinet I includes a cabinet body 1 and a plurality of liquid-cooled servers 2 arranged in the cabinet body, the liquid-cooled server 2 is provided with a liquid-cooled server chip 3, and the liquid-cooled device II includes a liquid-cooled heat dissipation 4, a distributor 6 and a collector 5, the distributor 6 and the collector 5 are respectively connected to the liquid cooling radiator 4 arranged in the liquid cooling server through a plurality of liquid inlet connecting branch pipes 7 and liquid outlet connecting branch pipes 17 Connected one by one, the liquid cooling radiator 4 is in contact with the liquid cooling server chip 3 or is arranged near the chip 3; the natural cooling water cooling device VII includes a door type cold water heat exchanger 8 arranged on the liquid cooling device, installed on the The fan 9 on the air outlet side of the cold water heat exchanger 8, the water inlet connection pipe, the water outlet connection pipe, the water pump 13, the electric regulating water valve 21, the water ring natural cooling heat exchange device 18 and the chiller 14, the chiller 14 and the chiller The heat exchanger 8 is respectively connected to form a loop through the water inlet connecting pipe 11 and the water outlet connecting pipe 12. The water pump 13, the electric regulating water valve 21, and the water ring natural cooling heat exchange device 18 are sequentially arranged on the water outlet connecting pipe 12 in series. The water ring natural cooling heat exchange device 18 includes an axial flow fan 19 and a natural cooling heat exchange coil 20 , and the natural cooling heat exchange coil 20 is connected in series to the water outlet connecting pipe 11 . The cold water heat exchanger 8 is a door type cold water heat exchanger.

The liquid cooling device II is externally installed on the cabinet body 1, and can be fixed or movable, preferably fixed. The door-type cold water heat exchanger 8 of the natural cooling chiller VII is installed on the liquid cooling II.

The liquid inlet connection branch pipe 7 of the liquid cooling device II can adopt a hard pipe or a soft pipe, preferably a soft pipe,

The door-type cold water heat exchanger 8 of the natural cooling chiller VII can be installed on the front door side or the back door side of the cabinet body 1, preferably on the back door side; the door-type cold water heat exchanger of the natural cooling chiller VII 8 can be opened by pivoting, and the water inlet connecting pipe 11 and the water outlet connecting pipe 12 of the door type cold water heat exchanger 8 all adopt flexible pipes.

The electric regulating water valve 21 of the natural cooling chiller VII can be a two-way valve or a three-way valve, preferably a three-way valve. The electric regulating water valve 21 can be installed on the inlet or outlet pipeline of the water ring natural cooling heat exchange device 18, preferably on the outlet pipeline.

The primary heat exchange medium 15 of the liquid cooling device II and the liquid cooling server 2 can be tap water, pure water, organic solution, inorganic solution, Freon, preferably pure water.

The secondary heat exchange medium 16 of the natural cooling chiller VII is water or antifreeze solution.

When the system is running, the heat generated by the liquid-cooled server chip 3 in the liquid-cooled server 2 accounts for about 80% of the total heat generated. This part of the heat is absorbed by the liquid-cooled radiator 4 and passed through the liquid-cooled radiator. The liquid-cooled heat exchange medium 15 at about 35-45° C. is taken away, so that the internal temperature of the liquid-cooled server chip 3 is maintained at a normal operating state of 60-70° C. The flow distribution and collection of the liquid-cooled heat-exchange medium 15 of the liquid-cooled radiator 4 inside each liquid-cooled server 2 is completed by the liquid-cooled device II: the liquid-cooled heat-exchange medium 15 with a temperature of about After the main pipeline flows into the distributor 6, it enters the liquid cooling radiator 4 through the liquid inlet connecting branch pipe 7, and after absorbing the heat of the liquid cooling server chip 3, it becomes a temperature state of 40~50°C, and enters the collector through the liquid outlet connecting branch pipe 17 5. Flow back to the liquid collecting main pipeline.

The calorific value of other components in the liquid-cooled server 2 accounts for about 20% of the total calorific value. This part of the heat is taken away by the server's own fan or the air flow generated by the fan 9 of the natural cooling water cooling device VII, and flows through the natural cooling water cooling device VII. After the door-type cold water heat exchanger 8, the heat of the air flow is absorbed by the secondary heat exchange medium 16 at 15-20°C, so that the temperature of the air flow is re-cooled to about 20-25°C, and reflows into the server to take away the heat of the internal components of the server. So cycle.

In the circulation of the natural cooling chiller VII, the temperature of the secondary heat exchange medium 16 inside the door-type cold water heat exchanger 8 rises from 12-15°C to 17-20°C after absorbing heat, and flows into it under the action of the circulating power of the water pump 13 The water chiller 14 and the water ring natural cooling chiller 18 are re-cooled to 12-17°C, and then flow back to the door-type cold water heat exchanger 8, and so on.

In the external circulation of the natural cooling chiller VII, there are three operating modes according to the ambient temperature:

1) Complete mechanical refrigeration operation mode: when the ambient temperature is relatively high (such as above 20°C), the chiller 14 is turned on, the water ring natural cooling heat exchange device 18 is stopped, and the bypass opening of the electric regulating water valve 21 is 0%, The secondary heat exchange medium 16 does not flow through the water ring natural cooling heat exchange device 18 , the axial flow fan 19 is also in a stopped state, and all the cooling capacity of the secondary heat exchange medium 16 is provided by the chiller 14 .

2) Mixed refrigeration operation mode: when the ambient temperature is low (such as 0~20°C), the chiller 14 and the water ring natural cooling heat exchange device 18 are both turned on and running, and the bypass opening of the electric regulating water valve 21 is 100%, All the secondary heat exchange medium 16 first flows through the water ring natural cooling heat exchange device 18, and uses the axial flow fan 19 and the forced convection heat exchange with the natural cooling heat exchange coil 20 to perform heat dissipation and precooling on the secondary heat exchange medium 16 , the secondary heat exchange medium 16 further flows through the chiller 14 to perform compensatory cooling to reach the required temperature.

3) Complete natural cooling operation mode: when the ambient temperature is low (such as below 0°C), the chiller 14 stops running, the water ring natural cooling heat exchange device 18 starts running, and the bypass opening of the electric regulating water valve 21 is kept at 100%, all the secondary heat exchange medium 16 flows through the water ring natural cooling heat exchange device 18, and the cooling capacity generated by natural cooling is adjusted by adjusting the speed of the axial flow fan 19; if the ambient temperature is extremely low, the axial flow fan 19 Already at the lowest speed (generally 10~30%), the cooling capacity generated by natural cooling is still too large (shown in the low temperature of the secondary heat exchange medium 16), then keep the axial flow fan 19 running stably at the lowest speed, and The cooling capacity generated by natural cooling is controlled by adjusting the bypass opening degree of the electric regulating water valve 21 .

Example 3

As shown in Figure 3, a server heat dissipation system combining a liquid cooling device and an auxiliary heat dissipation device includes a liquid cooling server cabinet I, a liquid cooling device II and a natural cooling water cooling device VII. The liquid-cooled server cabinet I includes a cabinet body 1 and a plurality of liquid-cooled servers 2 arranged in the cabinet body, the liquid-cooled server 2 is provided with a liquid-cooled server chip 3, and the liquid-cooled device II includes a liquid-cooled heat sink 4, a distributor 6 and a collector 5, the distributor 6 and the collector 5 are respectively connected to the liquid cooling radiator 4 arranged in the liquid cooling server through a plurality of liquid inlet connecting branch pipes 7 and liquid outlet connecting branch pipes 17 Connected one by one, the liquid cooling radiator 4 is in contact with the liquid cooling server chip 3 or is arranged near the chip 3; the natural cooling water cooling device VII includes a door type cold water heat exchanger 8 arranged on the liquid cooling device, installed on the The fan 9 on the air outlet side of the cold water heat exchanger 8, the water inlet connecting pipe 12, the water outlet connecting pipe 11, the water pump 13, the electric regulating water valve 21, the water ring natural cooling heat exchange device 18 and the chiller 14, the chiller 14 It is connected to the cold water heat exchanger 8 through the water inlet connecting pipe 12 and the water outlet connecting pipe 11 respectively to form a loop. The water ring natural cooling heat exchange device 18 includes an axial flow fan 19 and a natural cooling heat exchange coil 20. One end of the natural cooling heat exchange coil 20 is connected to the electric regulating water valve 21 and the other end is connected to the water outlet connecting pipe 11 in parallel with the two ends of the chiller 14 . The cold water heat exchanger 8 is a door type cold water heat exchanger.

The liquid cooling device II is externally installed on the cabinet body 1, and can be fixed or movable, preferably fixed. The door-type cold water heat exchanger 8 of the natural cooling chiller VII is installed on the liquid cooling II.

The liquid inlet connection branch pipe 7 of the liquid cooling device II can adopt a hard pipe or a soft pipe, preferably a soft pipe,

The door-type cold water heat exchanger 8 of the natural cooling chiller VII can be installed on the front door side or the back door side of the cabinet body 1, preferably on the back door side; the door-type cold water heat exchanger of the natural cooling chiller VII 8 can be opened by pivoting, and the water inlet connecting pipe 12 and the water outlet connecting pipe 11 of the door type cold water heat exchanger 8 all adopt flexible pipes.

The electric regulating water valve 21 of the natural cooling chiller VII can be a two-way valve or a three-way valve, preferably a three-way valve. The electric regulating water valve 21 can be installed on the inlet or outlet pipeline of the water ring natural cooling heat exchange device 18, preferably on the outlet pipeline.

The primary heat exchange medium 15 of the liquid cooling device II and the liquid cooling server 2 can be tap water, pure water, organic solution, inorganic solution, Freon, preferably pure water.

The secondary heat exchange medium 16 of the natural cooling chiller VII is water or antifreeze solution.

When the system is running, the heat generated by the liquid-cooled server chip 3 in the liquid-cooled server 2 accounts for about 80% of the total heat generated. This part of the heat is absorbed by the liquid-cooled radiator 4 and passed through the liquid-cooled radiator. The liquid-cooled heat exchange medium 15 at about 35-45° C. is taken away, so that the internal temperature of the liquid-cooled server chip 3 is maintained at a normal operating state of 60-70° C. The flow distribution and collection of the liquid-cooled heat-exchange medium 15 of the liquid-cooled radiator 4 inside each liquid-cooled server 2 is completed by the liquid-cooled device II: the liquid-cooled heat-exchange medium 15 with a temperature of about After the main pipeline flows into the distributor 6, it enters the liquid cooling radiator 4 through the liquid inlet connecting branch pipe 7, and after absorbing the heat of the liquid cooling server chip 3, it becomes a temperature state of 40~50°C, and enters the collector through the liquid outlet connecting branch pipe 17 5. Flow back to the liquid collecting main pipeline.

The calorific value of other components in the liquid-cooled server 2 accounts for about 20% of the total calorific value. This part of the heat is taken away by the server's own fan or the air flow generated by the fan 9 of the natural cooling water cooling device VII, and flows through the natural cooling water cooling device VII. After the door-type cold water heat exchanger 8, the heat of the air flow is absorbed by the secondary heat exchange medium 16 at 15-20°C, so that the temperature of the air flow is re-cooled to about 20-25°C, and reflows into the server to take away the heat of the internal components of the server. So cycle.

In the circulation of the natural cooling chiller VII, the temperature of the secondary heat exchange medium 16 inside the door-type cold water heat exchanger 8 rises from 12-15°C to 17-20°C after absorbing heat, and flows into it under the action of the circulating power of the water pump 13 The water chiller 14 and the water ring natural cooling chiller 18 are re-cooled to 12-17°C, and then flow back to the door-type cold water heat exchanger 8, and so on.

In the external circulation of the natural cooling chiller VII, there are two operating modes according to the ambient temperature:

1) Mechanical refrigeration operation mode: when the ambient temperature is relatively high (such as above 0°C), the chiller 14 is turned on, the water ring natural cooling heat exchange device 18 is stopped, and the bypass opening of the electric regulating water valve 21 is 0%. The secondary heat exchange medium 16 does not flow through the water ring natural cooling heat exchange device 18 , the axial flow fan 19 is also in a stopped state, and all the cooling capacity of the secondary heat exchange medium 16 is provided by the chiller 14 .

2) Natural cooling operation mode: when the ambient temperature is low (such as below 0°C), the chiller 14 stops running, the water ring natural cooling heat exchange device 18 starts running, and the bypass opening of the electric regulating water valve 21 is kept at 100 %, all the secondary heat exchange medium 16 flows through the water ring natural cooling heat exchange device 18, and the cooling capacity produced by natural cooling is adjusted by adjusting the rotating speed of the axial flow fan 19; if the ambient temperature is extremely low, the axial flow fan 19 has already At the lowest speed (generally 10~30%), the cooling capacity generated by natural cooling is still too large (expressed in the low temperature of the secondary heat exchange medium 16), then keep the axial flow fan 19 running stably at the lowest speed, and pass Adjust the bypass opening degree of the electric regulating water valve 21 to control the cooling capacity produced by natural cooling.

Example 4

As shown in Figure 4, a server heat dissipation system combining a natural cooling water chiller and a liquid cooling device includes a liquid cooling server cabinet I, a liquid cooling device II, and a door-type heat pipe air conditioner IV. The liquid-cooled server cabinet I includes a cabinet body 1 and a plurality of liquid-cooled servers 2 arranged in the cabinet body, the liquid-cooled server 2 is provided with a liquid-cooled server chip 3, and the liquid-cooled device II includes a liquid-cooled heat sink 4, a distributor 6 and a collector 5, the distributor 6 and the collector 5 are respectively connected to the liquid cooling radiator 4 arranged in the liquid cooling server through a plurality of liquid inlet connecting branch pipes 7 and liquid outlet connecting branch pipes 17 Connected one by one, the liquid cooling radiator 4 is in contact with the chip 3 of the liquid cooling server or is arranged near the chip 3; The fan 9 on the air outlet side of the evaporator 25, the connecting air pipe 27, the connecting liquid pipe 26, the water pump 13, the condenser 10 and the water chiller 14, the evaporator 25 and the condenser 10 are respectively connected by connecting the air pipe 27 and the connecting liquid pipe 26. The connection forms an inner loop, the condenser 10 and the chiller 14 are connected to form an outer loop, and a water pump is arranged between the condenser 10 and the chiller 14 .

The liquid cooling device II is externally installed on the cabinet body 1 and adopts a fixed installation.

The liquid inlet connecting branch pipe 7 and the liquid outlet connecting branch pipe 17 of the liquid cooling device II, the connecting gas pipe 27 and the connecting liquid pipe 26 of the evaporator 25 all adopt flexible pipes.

The fan 9 adopts an axial flow fan; the evaporator 25 adopts an all-aluminum microchannel heat exchanger; the evaporator 25 is installed on the side of the back door and can be opened by axial rotation; the condenser 10 adopts a plate heat exchanger device; the chiller 14 uses a plate heat exchanger.

When the system is running, the heat generated by the liquid-cooled server chip 3 in the liquid-cooled server 2 accounts for about 80% of the total heat generated. This part of the heat is absorbed by the liquid-cooled radiator 4 and passed through the liquid-cooled radiator. The primary heat exchange medium 15 at about 35-45°C is taken away, so that the internal temperature of the liquid-cooled server chip 3 is maintained at a normal operating state of 60-70°C. The flow distribution and collection of the primary heat exchange medium 15 of the liquid cooling radiator 4 inside each liquid cooling server 2 is completed by the liquid cooling device II: the primary heat exchange medium 15 with a temperature of about 35~45°C flows from the main liquid supply pipeline After flowing into the distributor 6, it enters the liquid cooling radiator 4 through the liquid inlet connecting branch pipe 7, and after absorbing the heat of the liquid cooling server chip 3, it becomes in a temperature state of 40~50°C, and enters the current collector 5 through the liquid outlet connecting branch pipe 17. Flow back to the liquid collection main.

The calorific value of other components in the liquid-cooled server 2 accounts for about 20% of the total calorific value. This part of the heat is taken away by the fan 9 of the server itself or the fan 9 of the door-type heat pipe air conditioner IV, and flows through the air of the door-type heat pipe air conditioner IV After the evaporator 25, the heat of the air flow is absorbed by the secondary heat exchange medium 16 at 15-20°C, so that the temperature of the air flow is recooled to about 20-25°C, and flows into the server again to take away the heat of the internal components of the server, and so on. The liquid secondary heat exchange medium 16 inside the evaporator 25 absorbs heat and evaporates into a gaseous state, and flows into the condenser 9 along the connecting air pipe 27 under the power of the heat pipe cycle, and the heat is taken away by the low-temperature chilled water provided by the chiller 14 and the water pump 13 , after being condensed into a liquid working substance, it flows back to the evaporator 25 along the connecting liquid pipe 26, and circulates like this.

Example 5

As shown in Figure 5, a server heat dissipation system combining a natural cooling chiller and a liquid cooling device includes a liquid cooling server cabinet I, a liquid cooling device II, and an air-cooling natural cooling heat pipe air conditioner V. The liquid-cooled server cabinet I includes a cabinet body 1 and a plurality of liquid-cooled servers 2 arranged in the cabinet body, the liquid-cooled server 2 is provided with a liquid-cooled server chip 3, and the liquid-cooled device II includes a liquid-cooled heat dissipation 4, a distributor 6 and a collector 5, the distributor 6 and the collector 5 are respectively connected to the liquid cooling radiator 4 arranged in the liquid cooling server through a plurality of liquid inlet connecting branch pipes 7 and liquid outlet connecting branch pipes 17 Connected one by one, the liquid-cooled radiator 4 is in contact with the liquid-cooled server chip 3 or is arranged near the chip 3; the air-cooled natural cooling heat pipe air conditioner V includes an evaporator 25 arranged on the back door side of the cabinet body 1, an installation The fan 9 on the air outlet side of the evaporator 8, the connecting air pipe 27, the connecting liquid pipe 26, the air-cooled natural cooling heat exchange device 18, the electric regulating refrigerant valve 21, the water pump 13, the condenser 10 and the chiller 14, the evaporator 25 and the condenser 10 are respectively connected to form an inner loop through the connecting air pipe 27 and the connecting liquid pipe 26. The connecting air pipe 27 is provided with an air-cooled natural cooling heat exchange device 18 and an electric regulating refrigerant valve 21. The electric regulating refrigerant valve 21 is installed on the outlet pipeline of the air-cooled natural cooling heat exchange device 18; the condenser 10 is connected with the chiller 14 to form an outer loop, and a water pump 13 is also provided between the condenser 10 and the chiller 14.

Further, the water ring natural cooling heat exchange device 18 includes an axial flow fan 19 and a natural cooling heat exchange coil 18, one end of the natural cooling heat exchange coil 18 is arranged on the connecting air pipe 27 and the other end is connected with the electrically regulated refrigerant Valve 21 is connected. The electrically adjustable refrigerant valve 21 is a two-way valve or a three-way valve, preferably a three-way valve.

The liquid inlet connecting branch pipe 7 and the liquid outlet connecting branch pipe 17 of the liquid cooling device II, the connecting gas pipe 27 and the connecting liquid pipe 26 of the evaporator 25 all adopt flexible pipes. The liquid cooling device II is externally installed on the cabinet body 1 and adopts a fixed installation. The evaporator 25 can be pivoted open.

The liquid cooling heat exchange medium 23 of the liquid cooling device II and the liquid cooling server 2 uses pure water; the internal circulation heat exchange medium 24 of the air-cooled natural cooling heat pipe air conditioner V is R134a freon; the external circulation The heat exchange medium 22 is water, and antifreeze solutions such as ethylene glycol solution are preferred in areas where the lowest temperature is below zero.

When the system is running, the heat generated by the liquid-cooled server chip 3 in the liquid-cooled server 2 accounts for about 80% of the total heat generated. This part of the heat is absorbed by the liquid-cooled radiator 4 and passed through the liquid-cooled radiator. The liquid-cooled heat exchange medium 23 at about 35-45°C is taken away, so that the internal temperature of the liquid-cooled server chip 3 is maintained at a normal operating state of 60-70°C. The flow distribution and collection of the liquid-cooled heat-exchange medium 23 of the liquid-cooled radiator 4 inside each liquid-cooled server 2 is completed by the liquid-cooled device II: the liquid-cooled heat-exchange medium 23 with a temperature of about 35-45°C flows from the liquid After the main pipeline flows into the distributor 6, it enters the liquid cooling radiator 4 through the liquid inlet connecting branch pipe 7, and after absorbing the heat of the liquid cooling server chip 3, it becomes a temperature state of 40~50°C, and enters the collector through the liquid outlet connecting branch pipe 17 5. Flow back to the liquid collecting main pipeline.

The calorific value of other components in the liquid-cooled server 2 accounts for about 20% of the total calorific value. This part of the heat is taken away by the server’s own fan or the air flow generated by the fan 9 of the air-cooled natural cooling heat pipe air conditioner V, and flows through the air-cooled natural cooling. After the evaporator 25 of the heat pipe air conditioner V, the heat of the air flow is absorbed by the internal circulation heat exchange medium 24 at 15-20°C, so that the temperature of the air flow is re-cooled to about 20-25°C, and reflows into the server to take away the heat of the internal components of the server. So cycle.

In the internal circulation of the air-cooled natural cooling heat pipe air conditioner V, the liquid internal circulation heat exchange medium 24 inside the evaporator 25 absorbs heat and evaporates into a gaseous state, and flows into the condenser 9 along the connecting air pipe 27 under the power of the heat pipe cycle, and the heat is pumped by the water pump The low-temperature external circulation heat exchange medium 22 provided by 13 is taken away, and after being condensed into a liquid working fluid, it flows back to the evaporator 8 along the connecting liquid pipe 26, and so on.

In the air-cooled natural cooling heat pipe air conditioner V, there are three operating modes according to the ambient temperature:

1) Complete mechanical refrigeration operation mode: when the ambient temperature is relatively high (such as above 20°C), the chiller 14 is turned on, the air-cooled natural cooling heat exchange device 18 is stopped, and the bypass opening of the electrically adjustable refrigerant valve 21 is 0%, The internal circulation heat exchange medium 24 does not flow through the air-cooled natural cooling heat exchange device 18, and the axial flow fan 19 is also in a stopped state. The cooling capacity required for condensation of the internal circulation heat exchange medium 24 is all passed by the condenser 10 and the chiller 14. Secondary heat exchange is provided.

2) Mixed refrigeration operation mode: when the ambient temperature is low (such as 0~20°C), the chiller 14 and the air-cooled natural cooling heat exchange device 18 are both turned on and running, and the bypass opening of the electrically adjustable refrigerant valve 21 is 100%. All the internal circulation heat exchange medium 24 first flows through the air-cooled natural cooling heat exchange device 18, and utilizes the axial flow fan 19 and the forced convection heat exchange with the natural cooling heat exchange coil 20 to perform heat dissipation and precooling on the internal circulation heat exchange medium 24 (partial condensation), the internal circulation heat exchange medium 24 further flows through the condenser 10, and the remaining condensation heat is taken away by the low-temperature external circulation heat exchange medium 22 provided by the chiller 14 and the water pump 13.

3) Complete natural cooling operation mode: when the ambient temperature is low (such as below 0°C), the chiller 14 stops running, the air-cooled natural cooling heat exchange device 18 starts running, and the bypass opening of the electrically adjustable refrigerant valve 21 is kept at 100%, all the internal circulation heat exchange medium 24 flows through the air-cooled natural cooling heat exchange device 18, and the cooling capacity generated by natural cooling is adjusted by adjusting the speed of the axial flow fan 19; if the ambient temperature is extremely low, the axial flow fan 19 Already at the lowest speed (generally 10~30%), the cooling capacity generated by natural cooling is still too large (expressed in the low temperature and pressure of the internal circulation heat exchange medium 24), then keep the axial flow fan 19 running stably at the lowest speed , and by adjusting the bypass opening of the electrically adjustable refrigerant valve 21 to control the cooling capacity generated by natural cooling.

Embodiment 6:

As shown in Figure 6, a server heat dissipation system combining a natural cooling chiller and a liquid cooling device includes a liquid cooling server cabinet I, a liquid cooling device II, and an air-cooling natural cooling heat pipe air conditioner V. The liquid-cooled server cabinet I includes a cabinet body 1 and a plurality of liquid-cooled servers 2 arranged in the cabinet body, the liquid-cooled server 2 is provided with a liquid-cooled server chip 3, and the liquid-cooled device II includes a liquid-cooled heat dissipation 4, a distributor 6 and a collector 5, the distributor 6 and the collector 5 are respectively connected to the liquid cooling radiator 4 arranged in the liquid cooling server through a plurality of liquid inlet connecting branch pipes 7 and liquid outlet connecting branch pipes 17 One by one connection, the liquid cooling radiator 4 is in contact with the liquid cooling server chip 3 or is arranged near the chip 3; The fan 9 on the air outlet side of the evaporator 25, the connecting air pipe 27, the connecting liquid pipe 26, the air-cooled natural cooling heat exchange device 18, the electrically adjustable refrigerant valve 21, the water pump 13, the condenser 10 and the chiller 14, the evaporator 25 It is connected with the condenser 10 through the connecting air pipe 27 and the connecting liquid pipe 26 to form an inner loop respectively. One end of the air-cooled natural cooling heat exchange device 18 is arranged on the connecting air pipe 27 and the other end is arranged on the connecting liquid pipe 26. An electric adjustable refrigerant valve 21 is provided on the outlet pipeline of the cold natural cooling heat exchange device 18; the condenser 10 is connected with the chiller 14 to form an outer loop, and a water pump 13 is provided between the condenser 10 and the chiller 14.

Further, the water ring natural cooling heat exchange device 18 includes an axial flow fan 19 and a natural cooling heat exchange coil 18, one end of the natural cooling heat exchange coil 18 is arranged on the connecting air pipe 27 and the other end is connected with the electrically regulated refrigerant Valve 21 is connected. The electrically adjustable refrigerant valve 21 adopts a three-way valve.

The liquid inlet connecting branch pipe 7 and the liquid outlet connecting branch pipe 17 of the liquid cooling device II, the connecting gas pipe 27 and the connecting liquid pipe 26 of the evaporator 25 all adopt flexible pipes. The liquid cooling device II is externally installed on the cabinet body 1 and adopts a fixed installation. The evaporator 25 can be pivoted open.

The liquid cooling heat exchange medium 23 of the liquid cooling device II and the liquid cooling server 2 uses pure water; the internal circulation heat exchange medium 24 of the air-cooled natural cooling heat pipe air conditioner V is R134a freon; the external circulation The heat exchange medium 22 is water, and antifreeze solutions such as ethylene glycol solution are preferred in areas where the lowest temperature is below zero.

When the system is running, the heat generated by the liquid-cooled server chip 3 in the liquid-cooled server 2 accounts for about 80% of the total heat generated. This part of the heat is absorbed by the liquid-cooled radiator 4 and passed through the liquid-cooled radiator. The liquid-cooled heat exchange medium 23 at about 35-45°C is taken away, so that the internal temperature of the liquid-cooled server chip 3 is maintained at a normal operating state of 60-70°C. The flow distribution and collection of the liquid-cooled heat-exchange medium 23 of the liquid-cooled radiator 4 inside each liquid-cooled server 2 is completed by the liquid-cooled device II: the liquid-cooled heat-exchange medium 23 with a temperature of about 35-45°C flows from the liquid After the main pipeline flows into the distributor 6, it enters the liquid cooling radiator 4 through the liquid inlet connecting branch pipe 7, and after absorbing the heat of the liquid cooling server chip 3, it becomes a temperature state of 40~50°C, and enters the collector through the liquid outlet connecting branch pipe 17 5. Flow back to the liquid collecting main pipeline.

The calorific value of other components in the liquid-cooled server 2 accounts for about 20% of the total calorific value. This part of the heat is taken away by the server’s own fan or the air flow generated by the fan 9 of the air-cooled natural cooling heat pipe air conditioner V, and flows through the air-cooled natural cooling. After the evaporator 25 of the heat pipe air conditioner V, the heat of the air flow is absorbed by the internal circulation heat exchange medium 24 at 15-20°C, so that the temperature of the air flow is re-cooled to about 20-25°C, and reflows into the server to take away the heat of the internal components of the server. So cycle.

In the internal circulation of the air-cooled natural cooling heat pipe air conditioner V, the liquid internal circulation heat exchange medium 24 inside the evaporator 25 absorbs heat and evaporates into a gaseous state, and flows into the condenser 9 along the connecting air pipe 27 under the power of the heat pipe cycle, and the heat is pumped by the water pump The low-temperature external circulation heat exchange medium 22 provided by 13 is taken away, and after being condensed into a liquid working fluid, it flows back to the evaporator 8 along the connecting liquid pipe 26, and so on.

In the air-cooled natural cooling heat pipe air conditioner V, there are two operating modes according to the ambient temperature:

1) Mechanical refrigeration operation mode: when the ambient temperature is relatively high (such as above 0°C), the chiller 14 is turned on, the air-cooled natural cooling heat exchange device 18 is stopped, and the bypass opening of the refrigerant valve 21 is electrically adjusted to 0%. The circulating heat exchange medium 24 does not flow through the air-cooled natural cooling heat exchange device 18, and the axial flow fan 19 is also in a stopped state. Secondary heat exchange is provided.

2) Natural cooling operation mode: when the ambient temperature is low (such as below 0°C), the chiller 14 stops running, the air-cooled natural cooling heat exchange device 18 starts running, and the bypass opening of the electrically adjustable refrigerant valve 21 is kept at 100 %, all the internal circulation heat exchange medium 24 flows through the air-cooled natural cooling heat exchange device 18, and the cooling capacity produced by natural cooling is adjusted by adjusting the rotating speed of the axial flow fan 19; if the ambient temperature is extremely low, the axial flow fan 19 has already At the lowest speed (generally 10~30%), the cooling capacity generated by natural cooling is still relatively large (reflected by the low temperature and pressure of the internal circulation heat exchange medium 24), then keep the axial flow fan 19 running stably at the lowest speed, And by adjusting the bypass opening degree of the electrically adjustable refrigerant valve 21 to control the cooling capacity generated by natural cooling.

Example 7

As shown in Figure 7, a server heat dissipation system combining a water ring natural cooling heat pipe air conditioner and a liquid cooling device includes a liquid cooling server cabinet I, a liquid cooling device II and a water ring natural cooling heat pipe air conditioner VI. The liquid-cooled server cabinet I includes a cabinet body 1 and a plurality of liquid-cooled servers 2 arranged in the cabinet body, the liquid-cooled server 2 is provided with a liquid-cooled server chip 3, and the liquid-cooled device II includes a liquid-cooled heat sink 4, a distributor 6 and a collector 5, the distributor 6 and the collector 5 are respectively connected to the liquid cooling radiator 4 arranged in the liquid cooling server through a plurality of liquid inlet connecting branch pipes 7 and liquid outlet connecting branch pipes 17 One by one connection, the liquid cooling radiator 4 is in contact with the liquid cooling server chip 3 or is arranged near the chip 3; the water ring natural cooling heat pipe air conditioner VI includes an evaporator arranged on the front door side or the back door side of the cabinet body 1 25. The fan 9 installed on the air outlet side of the evaporator 25, the connecting air pipe 27, the connecting liquid pipe 26, the liquid inlet pipe 28, the liquid outlet pipe 29, the water ring natural cooling heat exchange device 30, the electric regulating refrigerant valve 21, and the water pump 13 , the condenser 10 and the chiller 14, the evaporator 25 and the condenser 10 are respectively connected to form an inner loop through a connecting gas pipe 27 and a connecting liquid pipe 26; the condenser 10 and the chiller 14 are connected through a liquid inlet pipe 28 and an outlet pipe The liquid pipes 29 are respectively connected to form an outer loop, and the liquid inlet pipe 28 is connected in series with a water pump 13 and a water ring natural cooling heat exchange device 30, and the inlet or outlet pipeline of the water ring natural cooling heat exchange device 30 is equipped with an electric Adjust the refrigerant valve 21.

Further, the water ring natural cooling heat exchange device 30 includes an axial flow fan 19 and a natural cooling heat exchange coil 20, one end of the natural cooling heat exchange coil 20 is arranged on the connecting air pipe 27 and the other end is connected with the electrically regulated refrigerant Valve 21 is connected. The electrically adjustable refrigerant valve 21 adopts a three-way valve.

The liquid inlet connecting branch pipe 7 and the liquid outlet connecting branch pipe 17 of the liquid cooling device II, the connecting gas pipe 27 and the connecting liquid pipe 26 of the evaporator 25 all adopt flexible pipes. The liquid cooling device II is externally installed on the cabinet body 1 and adopts a fixed installation. The evaporator 25 can be pivoted open.

The liquid cooling heat exchange medium 23 of the liquid cooling device II and the liquid cooling server 2 uses pure water; the internal circulation heat exchange medium 24 of the air-cooled natural cooling heat pipe air conditioner VI is R134a freon; the external circulation The heat exchange medium 22 is water, and antifreeze solutions such as ethylene glycol solution are preferred in areas where the lowest temperature is below zero.

When the system is running, the heat generated by the liquid-cooled server chip 3 in the liquid-cooled server 2 accounts for about 80% of the total heat generated. This part of the heat is absorbed by the liquid-cooled radiator 4 and passed through the liquid-cooled radiator. The liquid-cooled heat exchange medium 23 at about 35-45°C is taken away, so that the internal temperature of the liquid-cooled server chip 3 is maintained at a normal operating state of 60-70°C. The flow distribution and collection of the liquid-cooled heat-exchange medium 23 of the liquid-cooled radiator 4 inside each liquid-cooled server 2 is completed by the liquid-cooled device II: the liquid-cooled heat-exchange medium 23 with a temperature of about 35-45°C flows from the liquid After the main pipeline flows into the distributor 6, it enters the liquid cooling radiator 4 through the liquid inlet connecting branch pipe 7, and after absorbing the heat of the liquid cooling server chip 3, it becomes a temperature state of 40~50°C, and enters the collector through the liquid outlet connecting branch pipe 17 5. Flow back to the liquid collecting main pipeline.

The calorific value of other components in the liquid-cooled server 2 accounts for about 20% of the total calorific value. This part of the heat is taken away by the server’s own fan or the air flow generated by the fan 9 of the water ring natural cooling heat pipe air conditioner VI, and flows through the water ring for natural cooling. After the evaporator 25 of the heat pipe air conditioner VI, the heat of the air flow is absorbed by the internal circulation heat exchange medium 24 at 15-20°C, so that the temperature of the air flow is re-cooled to about 20-25°C, and reflows into the server to take away the heat of the internal components of the server. So cycle.

In the internal circulation of the water ring natural cooling heat pipe air conditioner VI, the liquid internal circulation heat exchange medium 24 inside the evaporator 25 absorbs heat and evaporates into a gaseous state, and flows into the condenser 9 along the connecting air pipe 27 under the power of the heat pipe cycle, and the heat is pumped by the water pump The low-temperature external circulation heat exchange medium 22 provided by 13 is taken away, and after being condensed into a liquid working fluid, it flows back to the evaporator 25 along the connecting liquid pipe 26, and so on.

In the external circulation of the water ring natural cooling heat pipe air conditioner VI, there are three operating modes according to the different ambient temperatures:

1) Complete mechanical refrigeration operation mode: when the ambient temperature is relatively high (such as above 20°C), the chiller 14 is turned on, the water ring natural cooling heat exchange device 30 is stopped, and the bypass opening of the electric regulating water valve 21 is 0%, The external circulation heat exchange medium 22 does not flow through the water ring natural cooling heat exchange device 30 , the axial flow fan 19 is also in a stopped state, and all the cooling capacity of the external circulation heat exchange medium 22 is provided by the chiller 14 .

2) Mixed refrigeration operation mode: when the ambient temperature is low (such as 0~20°C), the chiller 14 and the water ring natural cooling heat exchange device 30 are both turned on and running, and the bypass opening of the electric regulating water valve 21 is 100%, All the external circulation heat exchange medium 22 first flows through the water ring natural cooling heat exchange device 30, and uses the forced convection heat exchange of the axial flow fan 19 and the natural cooling heat exchange coil 20 to perform heat dissipation and precooling on the external circulation heat exchange medium 22, The externally circulated heat exchange medium 22 further flows through the chiller 14 to perform compensatory cooling to reach the required temperature.

3) Complete natural cooling operation mode: when the ambient temperature is low (such as below 0°C), the chiller 14 stops running, the water ring natural cooling heat exchange device 30 starts running, and the bypass opening of the electric regulating water valve 21 is kept at 100%, all the external circulation heat exchange medium 22 flows through the water ring natural cooling heat exchange device 18, and the cooling capacity generated by natural cooling is adjusted by adjusting the speed of the axial flow fan 19; if the ambient temperature is extremely low, the axial flow fan 19 Already at the lowest speed (generally 10~30%), the cooling capacity generated by natural cooling is still too large (expressed in the low temperature of the external circulation heat exchange medium 22), then keep the axial flow fan 19 running stably at the lowest speed, and pass Adjust the bypass opening degree of the electric regulating water valve 21 to control the cooling capacity produced by natural cooling.

Example 8

As shown in Figure 8, a server heat dissipation system combining a water ring natural cooling heat pipe air conditioner and a liquid cooling device includes a liquid cooling server cabinet I, a liquid cooling device II and a water ring natural cooling heat pipe air conditioner VI. The liquid-cooled server cabinet I includes a cabinet body 1 and a plurality of liquid-cooled servers 2 arranged in the cabinet body, the liquid-cooled server 2 is provided with a liquid-cooled server chip 3, and the liquid-cooled device II includes a liquid-cooled heat dissipation 4, a distributor 6 and a collector 5, the distributor 6 and the collector 5 are respectively connected to the liquid cooling radiator 4 arranged in the liquid cooling server through a plurality of liquid inlet connecting branch pipes 7 and liquid outlet connecting branch pipes 17 Connected one by one, the liquid cooling radiator 4 is in contact with the chip 3 of the liquid cooling server or is arranged near the chip 3; the water ring natural cooling heat pipe air conditioner VI includes an evaporator 25 arranged on the back door side of the cabinet 1, an installation The fan 9 on the air outlet side of the evaporator 25, the connecting air pipe 27, the connecting liquid pipe 26, the liquid inlet pipe 28, the liquid outlet pipe 29, the water ring natural cooling heat exchange device 30, the electrically adjustable refrigerant valve 21, the water pump 13, and the condenser 10 and the chiller 14, the evaporator 25 and the condenser 10 are respectively connected to form an inner loop through a connecting gas pipe 27 and a connecting liquid pipe 26, and the condenser 10 and the chiller 14 are connected through a liquid inlet pipe 28 and a liquid outlet pipe 29 Connect respectively to form an outer loop, one end of the water ring natural cooling heat exchange device 30 is arranged on the liquid inlet pipe 28 and the other end is arranged on the liquid outlet pipe 29, and the outlet pipeline of the water ring natural cooling heat exchange device 30 is provided with There is an electrically adjustable refrigerant valve 21; a water pump 13 is also provided on the inlet pipeline of the water ring natural cooling heat exchange device 30.

Further, the water ring natural cooling heat exchange device 30 includes an axial flow fan 19 and a natural cooling heat exchange coil 20, one end of the natural cooling heat exchange coil 20 is arranged on the connecting air pipe 27 and the other end is connected with the electrically regulated refrigerant Valve 21 is connected. The electrically adjustable refrigerant valve 21 adopts a three-way valve.

The liquid inlet connecting branch pipe 7 and the liquid outlet connecting branch pipe 17 of the liquid cooling device II, the connecting gas pipe 27 and the connecting liquid pipe 26 of the evaporator 25 all adopt flexible pipes. The liquid cooling device II is externally installed on the cabinet body 1 and adopts a fixed installation. The evaporator 25 can be pivoted open.

The liquid cooling heat exchange medium 23 of the liquid cooling device II and the liquid cooling server 2 uses purified water; the internal circulation heat exchange medium 24 of the air-cooled natural cooling heat pipe air conditioner III is R134a freon; the external circulation exchange The heat medium 22 is water, and antifreeze solutions such as ethylene glycol solution are preferred in areas where the lowest temperature is below zero.

When the system is running, the heat generated by the liquid-cooled server chip 3 in the liquid-cooled server 2 accounts for about 80% of the total heat generated. This part of the heat is absorbed by the liquid-cooled radiator 4 and passed through the liquid-cooled radiator. The liquid-cooled heat exchange medium 23 at about 35-45°C is taken away, so that the internal temperature of the liquid-cooled server chip 3 is maintained at a normal operating state of 60-70°C. The flow distribution and collection of the liquid-cooled heat-exchange medium 23 of the liquid-cooled radiator 4 inside each liquid-cooled server 2 is completed by the liquid-cooled device II: the liquid-cooled heat-exchange medium 23 with a temperature of about 35-45°C flows from the liquid After the main pipeline flows into the distributor 6, it enters the liquid cooling radiator 4 through the liquid inlet connecting branch pipe 7, and after absorbing the heat of the liquid cooling server chip 3, it becomes a temperature state of 40~50°C, and enters the collector through the liquid outlet connecting branch pipe 17 5. Flow back to the liquid collecting main pipeline.

The calorific value of other components in the liquid-cooled server 2 accounts for about 20% of the total calorific value. This part of the heat is taken away by the server’s own fan or the air flow generated by the fan 9 of the water ring natural cooling heat pipe air conditioner VI, and flows through the water ring for natural cooling. After the evaporator 25 of the heat pipe air conditioner VI, the heat of the air flow is absorbed by the internal circulation heat exchange medium 24 at 15-20°C, so that the temperature of the air flow is re-cooled to about 20-25°C, and reflows into the server to take away the heat of the internal components of the server. So cycle.

In the internal circulation of the water ring natural cooling heat pipe air conditioner VI, the liquid internal circulation heat exchange medium 24 inside the evaporator 25 absorbs heat and evaporates into a gaseous state, and flows into the condenser 9 along the connecting air pipe 27 under the power of the heat pipe cycle, and the heat is pumped by the water pump The low-temperature external circulation heat exchange medium 22 provided by 13 is taken away, and after being condensed into a liquid working fluid, it flows back to the evaporator 25 along the connecting liquid pipe 26, and so on.

In the external circulation of the water ring natural cooling heat pipe air conditioner VI, there are two operating modes according to the ambient temperature:

1) Mechanical refrigeration operation mode: when the ambient temperature is relatively high (such as above 0°C), the chiller 14 is turned on, the water ring natural cooling heat exchange device 30 is stopped, and the bypass opening of the electric regulating water valve 21 is 0%. The circulating heat exchange medium 22 does not flow through the water ring natural cooling heat exchange device 30 , the axial flow fan 19 is also in a stopped state, and all the cooling capacity of the externally circulated heat exchange medium 22 is provided by the chiller 14 .

2) Natural cooling operation mode: when the ambient temperature is low (such as below 0°C), the chiller 14 stops running, the water ring natural cooling heat exchange device 30 starts running, and the bypass opening of the electric regulating water valve 21 is kept at 100° %, all the external circulation heat exchange medium 22 flows through the water ring natural cooling heat exchange device 30, and the cooling capacity generated by natural cooling is adjusted by adjusting the rotating speed of the axial flow fan 19; if the ambient temperature is extremely low, the axial flow fan 19 has already At the lowest speed (generally 10~30%), the cooling capacity generated by natural cooling is still too large (expressed in the low temperature of the external circulation heat exchange medium 22), then keep the axial flow fan 19 running stably at the lowest speed, and through the adjustment The bypass opening of the water valve 21 is electrically adjusted to control the cooling capacity generated by natural cooling.

Example 9

As shown in Figure 9, a server cabinet heat dissipation system combining an air-cooled inter-row air conditioner and a liquid cooling device includes a server cabinet 100, the server cabinet 100 includes a cabinet body and a plurality of servers arranged in the cabinet body, the The server is equipped with a server chip, a liquid cooling device 000 for direct liquid cooling and heat dissipation of the server, and an air-cooled inter-column air conditioner 008 for auxiliary heat dissipation.

Further, the liquid cooling device 000 includes an internal circulation system and an external circulation system, and the internal circulation system includes a liquid heat pipe 101 inside the server, a plate heat exchanger 004, an internal circulation liquid inlet pipe 009 and an internal circulation outlet pipe. The liquid pipe 001, the plate heat exchanger 004 is connected to the liquid heat pipe 101 through the internal circulation liquid inlet pipe 009 and the internal circulation liquid outlet pipe 001 to form a loop, and the internal circulation liquid inlet pipe 009 is also equipped with a pressure replenishment device 003 and the first circulating liquid pump 002; the external circulation system is a loop formed by sequentially connecting the cooling liquid tower 007, the liquid tank 006, the second circulating liquid pump 005, and the plate heat exchanger 004.

The liquid heat pipe 101 is a heat pipe component, one end is directly in contact with the server chip for heat transfer, and the other end is connected to the internal circulation system for heat exchange. The plurality of liquid heat pipes 101 are connected in parallel to the internal circulation system. The server liquid heat pipe is filled with refrigerant, which is in a gas-liquid two-phase state at normal temperature and pressure. One end directly contacts the server chip for heat transfer, and the other end exchanges heat with the liquid refrigerant in the internal circulation system. Various electronic components are installed, and in order to prevent liquid from the circulation system from leaking to the electronic components, a liquid-proof partition 110 is provided in the server cabinet 100 to protect and isolate the two ends of the liquid heat pipes 101 of each server. During operation, natural convection heat exchange is performed through the circulation of the refrigerant in the inner circulation loop, and the heat generated by the server chip is continuously dissipated into the environment. The heat pipe heat exchange component is used for indirect cooling between the server chip and the external liquid cooling device, which can prevent the liquid from entering the server directly and reduce the chance of server damage caused by liquid leakage.

The first or second circulating fluid pumps 002 and 005 are variable frequency fluid pumps. The first or second circulating liquid pump 002, 005 provides power to drive the fluid flow in the pipeline.

During operation, the internal circulation system takes away the heat transferred from the server chip to the liquid heat pipe 101, and the heat absorbed by the external circulation system is carried away by the external circulation system.

As shown in FIG. 10 , there are two air-cooled inter-row air conditioners 008 installed side by side with the server cabinet 100 . The plurality of servers 111 are installed side by side in the server cabinet 100, and the two server cabinets 100 are installed opposite to each other to form a cold aisle in the middle. Air conditioner 008 supplies air from the cold aisle and returns air from the hot aisle. The inter-column air conditioner 008 cools the air, and the low-temperature air takes away the remaining heat of the server 111; the air-cooled inter-column air conditioner 008 has heating and humidifying functions to adjust the humidity of the computer room.

Example 10

As shown in Figure 9, a server cabinet heat dissipation system combining an air-cooled inter-row air conditioner and a liquid cooling device includes a server cabinet 100, the server cabinet 100 includes a cabinet body and a plurality of servers arranged in the cabinet body, the The server is equipped with a server chip, a liquid cooling device 000 for direct liquid cooling and heat dissipation of the server, and an air-cooled inter-column air conditioner 008 for auxiliary heat dissipation.

Further, the liquid cooling device 000 includes an internal circulation system and an external circulation system, and the internal circulation system includes a liquid heat pipe 101 inside the server, a plate heat exchanger 004, an internal circulation liquid inlet pipe 009 and an internal circulation outlet pipe. The liquid pipe 001, the plate heat exchanger 004 is connected to the liquid heat pipe 101 through the internal circulation liquid inlet pipe 009 and the internal circulation liquid outlet pipe 001 to form a loop, and the internal circulation liquid inlet pipe 009 is also equipped with a pressure replenishment device 003 and the first circulating liquid pump 002; the external circulation system is a loop formed by sequentially connecting the cooling liquid tower 007, the liquid tank 006, the second circulating liquid pump 005, and the plate heat exchanger 004.

The liquid heat pipe 101 is a heat pipe component, one end is directly in contact with the server chip for heat transfer, and the other end is connected to the internal circulation system for heat exchange. The plurality of liquid heat pipes 101 are connected in parallel to the internal circulation system. The server liquid heat pipe is filled with refrigerant, which is a gas at normal temperature and pressure. One end directly contacts the server chip for heat transfer, and the other end exchanges heat with the liquid refrigerant in the internal circulation system. Since various For electronic components, in order to prevent the circulation system liquid from leaking to the electronic components, a liquid-proof partition 110 is provided in the server cabinet 100 to protect and isolate the two ends of each server liquid heat pipe 101 . During operation, natural convection heat exchange is performed through the circulation of the refrigerant in the inner circulation loop, and the heat generated by the server chip is continuously dissipated into the environment. The heat pipe heat exchange component is used for indirect cooling between the server chip and the external liquid cooling device, which can prevent the liquid from entering the server directly and reduce the chance of server damage caused by liquid leakage.

The first or second circulating fluid pumps 002 and 005 are variable frequency water pumps. The first or second circulating liquid pump 002, 005 provides power to drive the fluid flow in the pipeline.

During operation, the internal circulation system takes away the heat transferred from the server chip to the liquid heat pipe 101, and the heat absorbed by the external circulation system is carried away by the external circulation system.

As shown in FIG. 11 , there are two air-cooled inter-row air conditioners 008 , which are installed side by side with the server cabinet 100 . The plurality of servers 111 are installed side by side in the server cabinet 100, and the two server cabinets 100 are installed opposite to each other to form a hot aisle in the middle. Air conditioner 008 supplies air from the cold aisle and returns air from the hot aisle. The inter-column air conditioner 008 cools the air, and the low-temperature air takes away the remaining heat of the server 111; the air-cooled inter-column air conditioner 008 has heating and humidifying functions to adjust the humidity of the computer room.

Claims (10)

1. the server radiating system of a liquid cooling apparatus and auxiliary radiating device combination, comprise liquid cooling server cabinet, described liquid cooling server cabinet comprises rack cabinet and is arranged at the multiple liquid cooling servers in rack cabinet, it is characterized in that, be provided with liquid cooling apparatus and direct liquid-cooling heat radiation is carried out to liquid cooling server, be also provided with auxiliary radiating device and auxiliary heat dissipation is carried out to liquid cooling server.

2. the server radiating system of liquid cooling apparatus and auxiliary radiating device combination according to claim 1, it is characterized in that, described liquid cooling apparatus comprises liquid cooling heat radiator, distributor, current collector and a heat transferring medium, described liquid cooling heat radiator is used for dispelling the heat to server chips, described distributor is connected with liquid cooling heat radiator by many feed liquor connecting branches, liquid cooling heat radiator is connected with described current collector by many fluid connecting branches again, a described heat transferring medium enters liquid cooling heat radiator by distributor and feed liquor connecting branch, collected by current collector by fluid connecting branch efflux cold heat sink again.

3. the server radiating system of liquid cooling apparatus and auxiliary radiating device combination according to claim 1, it is characterized in that, described liquid cooling apparatus comprises internal circulation system and external circulating system, described internal circulation system comprises liquid heat pipe, Intermediate Heat Exchanger, Inner eycle feed tube and the Inner eycle drain pipe of being located at server internal, and described Intermediate Heat Exchanger is connected to form loop by Inner eycle feed tube and Inner eycle drain pipe and liquid heat pipe; Described external circulating system is the loop be in turn connected to form by cold liquid tower, liquid case, the second recycle liquid pump, Intermediate Heat Exchanger, and the described inside and outside circulatory system realizes the transmission of heat by Intermediate Heat Exchanger.

4. the server radiating system of liquid cooling apparatus and auxiliary radiating device combination according to claim 2, it is characterized in that, described liquid cooling heat radiator is located near server chips, or directly contacts with server chips.

5. the server radiating system of liquid cooling apparatus and auxiliary radiating device combination according to claim 1, it is characterized in that, described auxiliary radiating device is gate-type cold water heat-exchanger rig, described gate-type cold water heat-exchanger rig comprises cold-water heat exchanger, connecting line and secondary heat exchange medium, described cold-water heat exchanger is arranged on liquid cooling server cabinet or liquid cooling apparatus, and loads secondary heat exchange medium by connecting line.

6. the server radiating system of liquid cooling apparatus and auxiliary radiating device combination according to claim 5, it is characterized in that, described gate-type cold water heat-exchanger rig also comprises cooling-water machine, water pump and blower fan, described cooling-water machine and water pump are located at outside machine room, and be connected with cold-water heat exchanger by connecting line, described assembling is in the air side of cold-water heat exchanger.

7. the server radiating system of liquid cooling apparatus and auxiliary radiating device combination according to claim 1, it is characterized in that, described auxiliary radiating device is heat pipe air conditioner, described heat pipe air conditioner comprises evaporator, condenser, connecting tube and secondary heat exchange medium, described evaporator and condenser are connected to form loop by connecting line, and load secondary heat exchange medium by connecting line.

8. the server radiating system of liquid cooling apparatus and auxiliary radiating device combination according to claim 7, it is characterized in that, described heat pipe air conditioner also comprises the cooling-water machine be located at outside rack, and described cooling-water machine and condenser are connected to form loop by circulation line, and described circulation line is provided with water pump.

9. the server radiating system that liquid cooling apparatus and auxiliary radiating device combine according to claim 6 or 8, it is characterized in that, described connecting line or circulation line are provided with water ring natural cooling heat exchange device and motorized adjustment water valve, described water ring natural cooling heat exchange device comprises axial flow blower and natural cooling heat exchange coil pipe, described natural cooling heat exchange coil pipe serial or parallel connection is on connecting line or circulation line, and the water outlet of water ring natural cooling heat exchange device is located at by described motorized adjustment water valve.

10. the server radiating system of liquid cooling apparatus and auxiliary radiating device combination according to claim 1, is characterized in that, described auxiliary radiating device is air-conditioning between more than one Wind-cooling type row, and installs side by side with server cabinet; Multiple server is installed on server cabinet side by side, and adjacent server cabinet is mounted opposite and forms alternate cold passage and the passage of heat, and between described Wind-cooling type row, air-conditioning is blown again by passage of heat return air from cold passage.