CN204153902U - A kind of equipment cabinet server water loops heat pipe radiating system - Google Patents

Abstract

The utility model discloses a primary water loop heat pipe cooling system for a cabinet server, comprising a machine room unit, a cooling unit and a circulating power unit, the machine room unit is connected with the circulating power unit, the machine room unit is connected with the cooling unit, and the circulating power unit is connected with the cooling unit Connection; after the refrigerant water passes through the outdoor air natural cooling source of the cooling unit and the spray water evaporates to absorb heat and cool down, it is powered by the circulating power unit and enters the machine room unit to cool down the machine room unit. The utility model adopts the method of shortening the cold air delivery distance of the cabinet and precise air supply, on the basis of making full use of natural cooling energy and not increasing energy consumption, it solves the problem of local overheating of the server and the existence of hot spots; at the same time, the system does not introduce outdoor air, and does not It affects the cleanliness and humidity of the air in the computer room; the design of the whole system is simple, the investment is low, and the system operation room has the characteristics of no power demand and no noise in operation, which realizes the purpose of energy saving, efficiency improvement, safety and reliability of the data computer room.

Description

A primary water loop heat pipe cooling system for cabinet servers

technical field

The utility model relates to the technical field of heat dissipation for Internet data center cabinet services, in particular to a primary water loop heat pipe heat dissipation system for cabinet servers.

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 an increase in the heat generated by the equipment in the cabinet. According to statistics, at present, the cabinet servers in large-scale domestic IDC computer rooms generate a lot of heat, and basically run 8,760 hours a year. For computer rooms that do not use fresh air, cooling is required throughout the year, resulting in huge energy consumption for the air conditioning system. The energy consumption of air conditioners accounts for about 40% to 50% of the overall energy consumption of the data center.

Because the traditional computer room precision air conditioner needs to pass through the compression refrigeration cycle, and then cool the indoor air, and then send it into the computer room through the raised floor channel, but this mode has problems such as local overheating, large power consumption, high energy consumption of the computer room air conditioner, and loud noise , can no longer meet the cooling needs of high-density cabinets in modern computer rooms. Especially in large-scale Internet data centers, the heat source is the server placed in the cabinet. The air enters the cabinet through the bottom or front of the cabinet. The space environment of the computer room, if the cooling problem of 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, air honeycomb heat exchangers are also used to indirectly exchange heat between the hot air of the heat pipe and the outdoor cold air, thereby reducing the temperature in the machine room. The advantage is that when using the outdoor cold source, no outdoor air is introduced and the air in the machine room is not affected. 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.

Therefore, the prior art still needs to be improved and developed.

Contents of the invention

The purpose of this utility model is to provide a primary water loop heat pipe heat dissipation system for cabinet servers, aiming at solving the problems of local overheating and hot spots in the existing precision air conditioners in machine rooms, which cannot meet the use requirements.

The technical scheme of the utility model is as follows: a primary water loop heat pipe heat dissipation system for a cabinet server, which includes a machine room unit and a refrigerant supply and return unit, and the refrigerant supply and return unit includes a cooling unit and a circulating power unit, and the machine room unit The primary water ring water supply main pipe of the machine room is connected to the circulating power unit, the machine room unit is connected to the cooling unit through the primary water ring return water main pipe of the machine room, and the circulating power unit is connected to the cooling unit through the outdoor water supply connecting pipe;

The cooling unit includes a closed cooling tower, a water supply valve and a water return valve; the closed cooling tower includes a cooling tower shell, a cooling tower fan, a dehydration device, a spray water pump, a spray device and a heat exchange coil. The cooling tower fan, dehydration device, spray device and heat exchange coil are all arranged in the cooling tower shell, the cooling tower fan is arranged on the top of the cooling tower shell, the dehydration device is arranged under the cooling tower fan, and the heat exchange coil Set in the middle of the cooling tower shell, the spraying device is set between the dehydration device and the heat exchange coil; the spraying water pump is connected to the spraying device, and the spraying water pump transfers the cooling liquid stored in the water tank at the bottom of the cooling tower shell Pump to the spraying device to realize spraying; an air inlet is arranged on the side of the cooling tower shell, the air inlet is placed under the heat exchange coil, and an air inlet grill is arranged at the air inlet; the heat exchange plate The water outlet of the pipe is connected to the water supply valve through the refrigerant water supply pipe, and the return water port of the heat exchange coil is connected to the return water valve through the refrigerant water return pipe; the water supply valve is connected to the circulating power unit through the outdoor water supply connection pipe, and the return water valve is connected to the outdoor The return water connection pipe and the main water return pipe of the primary water loop in the machine room are connected to the machine room unit.

The primary water loop heat pipe heat dissipation system for the cabinet server, wherein, the side of the bottom water tank is provided with a drain pipe, a water replenishment pipe and an overflow pipe, and the drain pipe, water replenishment pipe and overflow pipe are connected to the outdoor.

The primary water loop heat pipe heat dissipation system for the cabinet server is characterized in that the heat exchange coil is a threaded or elliptical heat exchange coil made of copper pipe or stainless steel pipe or carbon steel pipe or aluminum pipe material .

The primary water loop heat pipe heat dissipation system for the cabinet server, wherein the circulating power unit includes a circulating water pump and a backup circulating water pump, and the circulating water pump and the standby circulating water pump are connected in parallel to the primary water loop water supply trunk of the machine room through a water pump connecting pipe. pipe and the outdoor water supply connection.

In the primary water loop heat pipe heat dissipation system for cabinet servers, the circulating power unit further includes an automatic water supply and constant pressure device installed on the suction side of the circulating water pump.

The primary water loop heat pipe heat dissipation system for the cabinet server, wherein the computer room unit includes no less than two cabinet server heat dissipation air circulation systems connected in parallel, and the cabinet server heat dissipation air circulation system includes server cabinets, heat pipes A heat exchanger, a server, and a cooling fan, the server cabinet adopts a structure of bottom air intake and top air outlet, the cooling fan is provided with no less than two cooling fans, and the cooling fan is arranged on the top of the server cabinet; the heat pipe heat exchanger Consistent with the number of servers, there are multiple sets; both the heat pipe heat exchanger and the servers are set in the server cabinet, and the heat pipe heat exchanger is installed under the server cabinet; the multiple heat pipe heat exchangers are connected in parallel with different processes One end of the heat pipe heat exchanger is connected to the main water supply main pipe of the primary water ring in the machine room through the primary water ring water supply branch pipe, and the other end of the heat pipe heat exchanger is connected to the primary water ring return water main pipe of the machine room through the primary water loop return water branch pipe.

The primary water loop heat pipe cooling system for the cabinet server, wherein the heat pipe heat exchanger is a finned heat pipe heat exchanger, a micro-channel heat pipe heat exchanger or a ceramic heat pipe heat exchanger.

Beneficial effects of the utility model: the utility model provides a primary water loop heat pipe heat dissipation system for cabinet servers. This system makes full use of the natural cold source of outdoor air and the evaporation and heat absorption of spray water. The heat exchange of the heat exchange tubes in the system The temperature difference is large and the heat exchange efficiency is high; at the same time, the heat exchange coil of the closed cooling tower is adopted, and no impurities enter the refrigerant water circulation system, which can ensure that the circulating water in the machine room is not polluted and prolongs the service life; the machine room does not introduce outdoor air, ensuring The cleanliness and humidity of the air in the computer room; the design of the whole system is simple, the investment is low, there is no power inside the system computer room, the operation is noiseless, safe and environmentally friendly, and it meets the requirements of energy saving, efficiency enhancement, safety and reliability in the data computer room.

Description of drawings

Fig. 1 is a structural schematic diagram of a primary water loop heat pipe heat dissipation system for a cabinet server in the present invention.

Fig. 2 is a structural schematic diagram of the refrigerant supply and return unit in the utility model.

Fig. 3 is a schematic diagram of the structure of the machine room unit in the utility model.

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model more clear and definite, the utility model will be further described in detail below with reference to the accompanying drawings and examples.

As shown in Figures 1-3, the primary water loop heat pipe heat dissipation system for cabinet servers includes a machine room unit 100, a refrigerant supply and return unit 400, and the refrigerant supply and return unit 400 includes a cooling unit 200 and a circulating power unit 300. The unit 100 is connected to the circulating power unit 300 through the primary water supply main pipe of the machine room, the machine room unit 100 is connected to the cooling unit 200 through the primary water return main pipe of the machine room, and the circulating power unit 300 is connected to the cooling unit 200 through the outdoor water supply connection pipe; heat dissipation After the refrigerant water in the system passes through the outdoor air natural cooling source of the cooling unit 200 and the spray water evaporates, absorbs heat and cools down, the circulating power unit 300 provides circulating power and enters the computer room unit 100 to cool the computer room unit 100.

As shown in Figure 2, the cooling unit 200 includes a closed cooling tower 210, a water supply valve 220 and a water return valve 230; Spray water pump 214, spray device 215 and heat exchange coil 216, described cooling tower fan 212, dehydration device 213, spray device 215 and heat exchange coil 216 are all arranged in the cooling tower shell 211, cooling tower fan 212 is set on the top of the cooling tower shell 211, the dehydration device 213 is set under the cooling tower fan 212, the heat exchange coil 216 is set in the middle of the cooling tower shell 211, and the spray device 215 is set on the dehydration device 213 and the heat exchange Between the coil pipes 216; the spray water pump 214 is connected with the spray device 215, and the spray water pump 214 pumps the cooling liquid stored in the water tank at the bottom of the cooling tower housing 211 to the spray device 215 to spray; in the cooling tower The side of the housing 211 is provided with an air inlet, the air inlet is placed under the heat exchange coil 216, and the air inlet is provided with an air inlet grille 217; the water outlet of the heat exchange coil 216 passes through the refrigerant water supply pipe It is connected to the water supply valve 220, and the return water port of the heat exchange coil 216 is connected to the return water valve 230 through the refrigerant water return pipe; the water supply valve 220 is connected to the circulating power unit 300 through the outdoor water supply connection pipe, and the return water valve 230 is connected to the outdoor return water The primary water loop return water main pipe of the pipe and the machine room is connected with the machine room unit 100 .

The heat exchange coil 216 adopts, but is not limited to, heat exchange coils of structural types such as threaded and elliptical structures made of copper pipes, stainless steel pipes, carbon steel pipes, aluminum pipes and the like.

In order to facilitate timely replacement of the cooling liquid in the water tank at the bottom of the cooling tower housing 211 and ensure the cooling effect, the side of the bottom water tank is provided with drain pipes, replenishment pipes and overflow pipes, and the drain pipes, replenishment pipes and overflow pipes are connected to the outdoor.

Cooling unit 200 is under the action of cooling tower fan 212 at the top of the cooling tower, outdoor dry and cold air enters cooling tower shell 211 through air intake grille 217, and passes through heat exchange coil 216 heat and moisture exchange from bottom to top, and dehydration device 213 becomes Saturated hot and humid air is discharged through the cooling tower fan 212; the circulating cooling water at the bottom of the cooling tower shell 211 is atomized or sprayed to the surface of the spraying device 215 by the spraying device 215 under the action of the spraying water pump 214, and The internal circulating refrigerant water exchanges heat indirectly, and the cooling water after heat absorption simultaneously exchanges heat and moisture with the dry and cold air entering the cooling tower shell 211 to complete the cooling water cycle in the cooling tower; when the outdoor dry and cold air temperature is low, the system automatically controls Stop the operation of the spray water pump 214, and only use outdoor dry and cold air to exchange heat indirectly with the heat exchange coil 216 to achieve water-saving effect; among them, the cooling water in the cooling tower shell 211 is automatically controlled and adjusted to supplement the cooling water. , free drainage through the drainage pipe and sewage and overflow pipe to ensure the safe and reliable operation of the closed cooling tower, and at the same time ensure that the circulating water in the machine room is not polluted, prolonging the service life of the equipment.

The cooling unit 200 uses the cooling tower fan 212 as power to introduce the natural cold source of outdoor air through the air inlet arranged on the side of the cooling tower shell 211 to cool the heat exchange coil 216; The cooling liquid in the water tank at the bottom of the cooling tower shell 211 is pumped to the spray device 215 for spraying, and the heat exchange coil 216 is sprayed with water to evaporate and absorb heat. The two cooling methods cool and absorb heat at the same time, and the heat exchange coil 216 The heat transfer temperature difference is large, and the heat transfer efficiency is high. Moreover, the cooling unit 200 also adopts a closed cooling tower heat exchange coil to prevent impurities from entering the refrigerant water circulation system, which can ensure that the circulating water in the machine room is not polluted and prolong the service life of the equipment in the machine room; at the same time, the machine room unit 100 does not introduce outdoor The air ensures the cleanliness and humidity of the air in the computer room.

The circulating power unit 300 includes a circulating water pump 310 and a backup circulating water pump 320, and the circulating water pump 310 and the standby circulating water pump 320 are connected in parallel between the primary water ring water supply main pipe of the machine room and the outdoor water supply connecting pipe through a water pump connecting pipe 330.

The power source water pump of the refrigerant water cycle adopts a scheme of one use and one standby (circulating water pump 310 and standby circulating water pump 320), and both water pumps adopt frequency conversion control technology. When the system runs, the circulating water pump 310 is started by default. When the circulating water pump 310 fails or is regularly overhauled, the system automatically switches to the standby circulating water pump 320; the low-temperature refrigerant water provided by the cooling unit 200 passes through the outdoor water supply connecting pipe, the standby circulating The water pump 320 and the water pump connection pipe enter the main water supply main pipe of the primary water ring in the computer room to continuously provide the low-temperature refrigerant water required for heat dissipation for the equipment in the server computer room.

In order to ensure the normal circulation of the cooling liquid in the system and ensure the cooling effect, the circulating power unit 300 also includes an automatic water supply and constant pressure device 340 , and the automatic water supply and constant pressure device 340 is installed on the suction side of the circulating water pump 310 . The automatic water supplement and constant pressure device 340 is installed between the suction port of the circulating water pump 310 and the outdoor water supply connecting pipe, which can remove excess gas in the refrigerant water circulation system, and at the same time accurately control the internal pressure of the refrigerant water system according to the pressure change caused by the temperature change of the circulating refrigerant water volume. pressure to keep the system pressure constant.

As shown in Figure 3, the computer room unit 100 includes no less than two cabinet server cooling air circulation systems 110 connected in parallel, and the cabinet server cooling air circulation system 110 includes server cabinets 111, heat pipe heat exchangers 112, server 113 and cooling fan 114, the server cabinet 111 adopts the structure of bottom air intake and top air outlet, the cooling fan 114 is provided with no less than two, and the cooling fan 114 is arranged on the top of the server cabinet 111; the heat pipe heat exchange The number of heat pipe heat exchangers 112 and servers 113 is the same, and multiple heat pipe heat exchangers 112 and servers 113 are arranged in the server cabinet 111, and the heat pipe heat exchanger 112 is installed under the server cabinet 111; The heaters 112 are connected in parallel with different paths. One end of the heat pipe heat exchanger 112 is connected to the main water supply main pipe of the primary water ring in the machine room through the primary water ring water supply branch pipe, and the other end of the heat pipe heat exchanger 112 is connected to the main water supply pipe through the primary water ring return water branch pipe. The primary water loop in the machine room is connected to the main water pipe.

The heat pipe heat exchanger 112 is installed under the server cabinet 111, and directly exchanges heat to cool the server 113, realizes short-distance cold air delivery and precise cooling, and solves the problem of local overheating and hot spots in the cabinet. The heat pipe heat exchanger 112 adopts, but is not limited to, a fin heat pipe heat exchanger, a microchannel heat pipe heat exchanger, a ceramic heat pipe heat exchanger, and the like.

Under the power of the built-in cooling fan 114 in the server cabinet 111, the hot air outside the cabinet enters the cabinet through the air inlet at the bottom of the cabinet, and the hot air first passes through the heat pipe heat exchanger 112 and exchanges heat with the low-temperature refrigerant water in the heat exchange tube to become a lower temperature The cold air is cooled by the server 113 to cool down the cabinet equipment to realize short-distance cold air delivery and precise air supply; The cooling fan 114 on the top of the cabinet discharges air, thereby completing the air circulation inside and outside the cabinet, and also completing the cooling process for the cabinet server.

The operation process of the primary water loop heat pipe heat dissipation system for the cabinet server is as follows: the low-temperature refrigerant water provided by the cooling unit 200 enters the computer room unit 100 along the primary water ring water supply main pipe of the computer room under the action of the circulating water pump 310, and is supplied with water through the primary water ring The branch pipes enter the server cabinet 111; the refrigerant water in each branch pipe enters the heat pipe heat exchanger 112 in the server cabinet 111 under the power of the water pump, and becomes high-temperature refrigerant water after indirect heat exchange with the hot air passing through the heat exchanger. The primary water loop returns to the branch pipe and then flows into the primary water loop return main pipe of the machine room and is collected, and then enters the closed cooling tower 210 through the outdoor return water connection pipe, return water valve 230, and refrigerant water return pipe; 216 indirect heat exchange with the spray water on the surface of the heat exchange coil 216 and the dry and cold air passing through the surface of the heat exchange coil 216 to become low-temperature refrigerant water; under the power of the circulating water pump 310, it passes through the refrigerant water supply pipe and water supply valve in sequence 220. The outdoor water supply connection pipe enters the circulating water pump 310 to complete the closed refrigerant water circulation of the primary water loop heat pipe cooling system for the cabinet server.

The primary water loop heat pipe heat dissipation system for the cabinet server adopts the method of shortening the cooling air transmission distance of the cabinet and precise air supply, and solves the problem of local overheating and hot spots of the server on the basis of making full use of natural cooling energy and not increasing energy consumption; At the same time, the system does not introduce outdoor air, and does not affect the cleanliness and humidity of the air in the computer room; the whole system is simple in design and low in investment. Efficient, safe and reliable purposes.

It should be understood that the application of the present utility model is not limited to the above examples, and those skilled in the art can improve or change according to the above description, and all these improvements and changes should belong to the protection of the appended claims of the present utility model scope.

Claims (7)

1. A primary water loop heat pipe heat dissipation system for a cabinet server, characterized in that it includes a machine room unit and a refrigerant supply and return unit, the refrigerant supply and return unit includes a cooling unit and a circulating power unit, and the machine room unit passes through the primary water of the machine room The ring water supply main pipe is connected to the circulating power unit, the machine room unit is connected to the cooling unit through the primary water return water main pipe of the machine room, and the circulating power unit is connected to the cooling unit through the outdoor water supply connecting pipe; The cooling unit includes a closed cooling tower, a water supply valve and a water return valve; the closed cooling tower includes a cooling tower shell, a cooling tower fan, a dehydration device, a spray water pump, a spray device and a heat exchange coil. The cooling tower fan, dehydration device, spray device and heat exchange coil are all arranged in the cooling tower shell, the cooling tower fan is arranged on the top of the cooling tower shell, the dehydration device is arranged under the cooling tower fan, and the heat exchange coil Set in the middle of the cooling tower shell, the spraying device is set between the dehydration device and the heat exchange coil; the spraying water pump is connected to the spraying device, and the spraying water pump transfers the cooling liquid stored in the water tank at the bottom of the cooling tower shell Pump to the spraying device to realize spraying; an air inlet is arranged on the side of the cooling tower shell, the air inlet is placed under the heat exchange coil, and an air inlet grill is arranged at the air inlet; the heat exchange plate The water outlet of the pipe is connected to the water supply valve through the refrigerant water supply pipe, and the return water port of the heat exchange coil is connected to the return water valve through the refrigerant water return pipe; the water supply valve is connected to the circulating power unit through the outdoor water supply connection pipe, and the return water valve is connected to the outdoor The return water connection pipe and the main water return pipe of the primary water loop in the machine room are connected to the machine room unit. 2. The primary water loop heat pipe heat dissipation system for cabinet servers according to claim 1, characterized in that, the side of the bottom water tank is provided with drain pipes, replenishment pipes and overflow pipes, and the drain pipes, replenishment pipes and overflow pipes The water pipe connects to the outside. 3. The primary water loop heat pipe heat dissipation system for cabinet servers according to claim 2, wherein the heat exchange coils are threaded or elliptical tubes made of copper tubes, stainless steel tubes, carbon steel tubes or aluminum tubes. Structural heat exchange coils. 4. The primary water loop heat pipe heat dissipation system for cabinet servers according to any one of claims 1-3, wherein the circulating power unit includes a circulating water pump and a standby circulating water pump, and the circulating water pump and the standby circulating water pump Through the water pump connecting pipe, it is connected in parallel between the primary water ring water supply main pipe of the machine room and the outdoor water supply connecting pipe. 5. The primary water loop heat pipe cooling system for cabinet servers according to claim 4, wherein the circulating power unit further includes an automatic water supply and constant pressure device, and the automatic water supply and constant pressure device is installed on the suction side of the circulating water pump. oral side. 6. The primary water loop heat pipe cooling system for cabinet servers according to any one of claims 1-3, wherein the computer room unit includes no less than two cabinet server cooling air circulation systems connected in parallel, The cooling air circulation system of the cabinet server includes a server cabinet, a heat pipe heat exchanger, a server, and a cooling fan. The heat pipe heat exchanger is arranged on the top of the server cabinet; the number of the heat pipe heat exchanger is the same as that of the server, and there are multiple sets; the heat pipe heat exchanger and the server are both arranged in the server cabinet, and the heat pipe heat exchanger is installed under the server cabinet; The above-mentioned multiple heat pipe heat exchangers are connected in different ways in parallel. One end of the heat pipe heat exchanger is connected to the main water supply main pipe of the primary water ring in the machine room through the primary water ring water supply branch pipe, and the other end of the heat pipe heat exchanger is returned to the water through the primary water ring. The branch pipe is connected with the main water return pipe of the primary water loop in the machine room. 7. The primary water loop heat pipe heat dissipation system for cabinet servers according to claim 6, wherein the heat pipe heat exchanger is a finned heat pipe heat exchanger or a microchannel heat pipe heat exchanger or a ceramic heat pipe heat exchanger. heater.