CN102833988A - Data center heat dissipation scheme - Google Patents

Abstract

The invention discloses a data center heat dissipation solution, comprising a case, the case includes front and rear walls parallel to each other, left and right side walls connecting the front and rear walls, upper and lower walls perpendicular to the cabinet, and parallel to the front and rear walls of the case. The backplane; the backplane divides the chassis into two spaces, the front and the back, which are respectively the first and second spaces; the first and second spaces inside the chassis are isolated from each other by several side-by-side heat exchangers. The cabinets are respectively the equipment placement area and the fan room; the server system is arranged in the equipment placement area; the cabinets near the two side walls in the chassis are fan rooms without backplanes, and the middle cabinet can be set according to the air volume requirements. fan room; the heat exchanger is an evaporator of a multi-stage heat pipe heat pump composite system; this data center heat dissipation scheme not only improves the cooling efficiency of air supply and reduces cooling energy consumption through the fusion of multi-stage heat pipe heat pump refrigeration devices, but also The impact of dust on the server system is avoided.

Description

A data center cooling solution

technical field

The invention relates to a data center, in particular to a data center heat dissipation scheme.

Background technique

With the rapid development of the Internet, the pace of enterprise informatization continues to accelerate. The application and management mode of IT resources is undergoing profound changes, and will gradually develop from independent and dispersed functional resources to service-oriented innovative resources with the data center as the carrying platform. The data center is a large-scale centralized computing facility, which undertakes functions such as computing, storage, and application. It will become a new hot spot and core content of informatization construction. With the advent of the era of data explosion, higher requirements are put forward for data centers. More server hardware needs to be stacked in a limited space, including a large number of servers. These servers are placed in racks. Since there are many server systems and all For data centers, the overall cooling solution of the data center becomes very important. For the traditional mechanical refrigeration scheme, adding coolers can ensure the safety of indoor space cooling, but high-heat-generating spaces need year-round cooling, and the energy consumption of air-conditioning is high, so it is impossible to fundamentally realize the cooling effect of air-conditioning. Running energy-saving, but also brought power and cost problems. IDC's research report pointed out that in the cost of hardware investment, power supply and cooling devices account for half of the cost, while data center cooling systems account for 40% of the total power consumption of data centers.

The physical environment of traditional domestic data centers often exists: the overall layout is unreasonable, and the cooling system cannot be allocated according to the needs of actual equipment, resulting in high overall energy waste and local overheating problems; in terms of IT equipment, IDC statistics show that, In the Asia-Pacific region, the power consumption of data center servers is increasing at a rate of 23% per year. Compared with the world average growth rate of 16% per year, the power consumption growth rate of data centers in the Asia-Pacific region far exceeds the world average.

This situation has always prompted companies to explore better heat dissipation methods, such as submerging all hardware in oil or liquid. Since the hardware is completely immersed in it, oil cooling can better dissipate heat from components and hardware facilities. Although oil cooling can provide higher heat dissipation efficiency and allow servers to run more quietly and intensively, there are also some problems: (1) The oil cooling method causes the weight of the hardware to be much larger than that of servers in ordinary data centers, And this requires that the floor can bear enough weight; (2) the initial cost of installing the water pump radiator and the necessary connecting pipes is very expensive; (3) being completely submerged in the oil cooling equipment means that the hardware equipment will be difficult to upgrade, which makes Additional technical training is required.

What's more, they use Peltier cooling (semiconductor cooling chips), and also use dry ice or liquid nitrogen to ensure that they don't need to worry about the hardware stopping due to overheating when they are overclocking at the extreme. In fact, sometimes the processor will stop working when the temperature is too low. For example, the Core 2 Extreme QX9650 will automatically power off when it is -60 degrees to -90 degrees.

The patent application number 201210319421.1 applied by the applicant earlier proposed a multi-stage heat pipe heat pump composite system with simple structure, easy implementation, energy saving and emission reduction in order to solve the problem of large energy consumption in the heat pump system. Temperature and indoor load conditions, the unit selectively operates in multi-stage heat pump cycle or multi-stage heat pipe cycle mode, and achieves the goal of energy-saving operation on the premise of ensuring indoor cooling requirements. This multi-stage heat pipe heat pump composite system not only makes the heat pump cool The heat pipe heat transfer technology is integrated with each other. Compared with the existing various cooling schemes that require year-round cooling, the multi-stage heat pipe heat pump composite refrigeration technology has obvious superior performance (including energy saving rate and room temperature control quality), not only can realize heat pipe and heat pump refrigeration technology The advantages of each other are complementary, and the energy-saving technology of natural heat exchange can be fully utilized, and it can solve the problems of large heat exchange temperature difference loss and low total heat exchange efficiency of the existing single-stage heat pipe heat pump refrigeration device.

Therefore, it is imminent to find a cooling solution that can ensure effective heat dissipation under the premise of limited space and air-conditioning investment, so as to maximize the number of cabinets and the number of servers in the cabinet.

Contents of the invention

In order to solve the above technical problems, the present invention provides a cooling device that can provide uniformity of cold air, variability of cooling capacity and energy saving according to the cooling temperature of the server system in the cabinet, and also provides a data cooling device including the above cooling device. Central cooling scheme.

The present invention solves technical problem and adopts following technical scheme:

A heat dissipation solution for a data center, comprising a case, several server cabinets arranged in the case, a heat exchanger, a fan room, an air supply device, a humidifying device and circuit control components; the case includes front and rear walls parallel to each other, The left and right side walls connecting the front and rear walls, the upper and lower walls perpendicular to the chassis, and the backplane parallel to the front and rear walls of the chassis; the backplane divides the chassis into two spaces, the first and the second respectively. space; the first and second spaces inside the chassis are separated into several cabinets by several side-by-side heat exchangers, which are respectively equipment placement areas and fan rooms; the server system is arranged in the equipment placement areas; The air supply device and the air humidification device are placed in the fan room; each of the cabinets is provided with a door; the cabinets in the first and second spaces near the two side walls in the cabinet are fan rooms without backboards , which can not only supply air and humidify the server systems in the first and second spaces, but also guide the air flow in the first and second spaces; the intermediate server system area can be equipped with corresponding fan rooms according to the air volume requirements; the said The heat exchanger is the evaporator of the multi-stage heat pipe heat pump composite system, which is installed on the side wall of each group of server cabinets, dividing the first and second spaces into several server equipment placement areas and fan rooms; The fan room on the left side wall of the first space begins to follow the direction of the wind in the air duct. The heat exchanger on the left wall of the first group of server systems in the first space releases cold air into the server system, and the hot air generated by the server system enters into the server system. The heat exchanger on the right side wall is used for cooling, and the cooled air enters the next group of server systems, and then repeatedly flows down and circulates to the fan room on the right side wall of the first space, and then enters the fan room on the right side wall of the second space to carry out The refrigerating cycle of the second space is the same as the circulation mode of the first space, and finally the wind is sent into the fan room on the left side wall of the second space to exchange with the first space, and a closed internal cycle is completed.

The above-mentioned heat exchanger is an evaporator of a multi-stage heat pipe heat pump composite system, which is installed on the side wall of each group of server cabinets, and divides the first and second spaces into several server system areas and fan rooms; each of the A set of evaporators of a multi-stage heat pipe heat pump composite system is composed of no less than two evaporators of heat pipe heat pump composite units placed side by side, and the evaporators of each heat pipe heat pump composite unit have their own independent input and output terminals. The condensers of the corresponding heat pipe heat pump composite units are connected to form independent small circulation loops. They have independent compressors and circulation pumps, and their work and operation do not affect each other.

The above-mentioned heat exchanger is the evaporator of the multi-stage heat pipe heat pump composite system, and the evaporator of each group of multi-stage heat pipe heat pump composite system is composed of no less than two evaporators of the heat pipe heat pump composite unit placed side by side. The condensers of their own corresponding heat pipe heat pump composite units are connected to each other to form an independent heat pipe heat pump composite system refrigeration small cycle, and each group of multi-stage heat pipe heat pump composite system can be selectively operated according to the heat dissipation needs of the server system Some of the small circulation units replace each other intermittently. Since the temperature of the fins of the evaporator of the multi-stage heat pipe heat pump composite system on the side wall of the cabinet is lower than the temperature of the flowing gas in the cabinet, the water vapor in the flowing gas will reach its dew point temperature after encountering the fins and condense into liquid water. , so that the humidity in the chassis can be reduced spontaneously.

The cabinets in the first and second spaces close to the left and right side walls in the above-mentioned case are set as four fan rooms separated by no backboard in the middle; the fan rooms are provided with air supply devices and humidification devices; The server system area can be equipped with corresponding fan rooms according to the air volume requirements, and the density of the fan rooms can be set according to the requirements of the server system.

The above-mentioned fan rooms are equipped with air supply devices. The number of air supply devices in each fan room and the size of the air supply volume are determined according to the requirements of the server system between the two fan rooms. For a server system, you can increase the number of air supply devices in the middle or speed up the speed of each air supply device, so that the cold air from the evaporator on the side wall of the farthest server system can be sent into the space where the server system is located.

A humidifying device is installed in the above-mentioned fan room, and the opening of the humidifying device and the amount of humidification are automatically adjusted according to the needs of each group of server systems through the information feedback of the corresponding detection device.

Each server in the above-mentioned server system should be placed along the wind direction of the entire space and cannot block the wind, that is, the cross-sectional area of the server should be parallel to the wind direction in the air duct, so that the cold air sent from the side wall evaporator can enter, The hot air from the server system enters the next set of evaporators along the wind direction for cooling.

Partial space is left on the top and bottom of the above-mentioned case for the placement of pipelines and lines such as delivery pipes, power lines, and signal lines for the refrigerant to enter and exit the evaporator.

The above-mentioned circuit control part controls the circuit logic operation and equipment operation switch of the whole device, mainly through some temperature detection equipment to monitor some temperature changes in high-temperature environment and low-temperature environment, and selectively operate multi-stage heat pump refrigeration working mode or multi-stage heat pump heat pipe cooling working mode, and can avoid the situation of "big horse and small cart" according to the needs, and choose to make some units in the heat pump cooling working mode or heat pipe cooling working mode replace the intermittent work, which also prolongs the entire system to a certain extent. System life.

Compared with the prior art, the present invention uses the evaporator of the multi-stage heat pipe heat pump composite system as the side wall of the cabinet in the cabinet, so that each server system in the cabinet has one that can provide different cooling air volumes according to heat dissipation requirements. The cooling air supply device and a device that absorbs the hot air emitted by the server system can provide uniform cooling air to the server system in the cabinet at fixed points, thus ensuring sufficient cooling air and suitable temperature in each cabinet, and eliminating external mixing gas interference. Multi-stage heat pipe heat pump composite refrigeration technology has obvious superior performance (including energy saving rate and room temperature control quality), not only can realize the complementary advantages of heat pipe and heat pump refrigeration technology, but also can realize two modes of heat pipe and heat pump refrigeration with the same set of equipment, not only can The energy-saving technology of natural heat exchange is fully utilized, and the problems of large heat exchange temperature difference loss and low total heat exchange efficiency of the existing single-stage heat pipe heat pump refrigeration device can be solved. When the outdoor temperature is low in winter, the composite system generally operates in the heat pipe mode, and the compressor is always in a shutdown state, and the energy saving effect is the best; The alternating operation mode of the heat pump and the heat pipe has a remarkable energy-saving effect; when the outdoor temperature is high in summer, the unit generally operates in the heat pump mode, but at night and in rainy weather, it will also operate in the alternate operation mode of the heat pump and the heat pipe, which still has good energy saving Effect. Therefore, this data center cooling solution improves the air supply cooling efficiency and reduces cooling energy consumption through the integration of multi-stage heat pipe heat pump refrigeration devices. It can not only meet the cooling needs of the data center, but also avoid the impact of dust on the server system. The whole scheme is simple and reasonable in design, small in floor area, high in utilization rate and convenient in use.

Description of drawings

FIG. 1 is a schematic diagram of the internal space division of the chassis of the data center heat dissipation solution of the present invention.

Figure 2 is a three-dimensional view of the internal structure of the chassis.

Figure 3 is a three-dimensional curved plan view of the internal structure of the chassis.

Fig. 4 is a cabinet implementation diagram of the heat dissipation solution for this data center.

Figure 5 is a link diagram of heat exchangers inside and outside a single cabinet in this chassis.

In the figure: (1) chassis; (2) backplane; (3) first space; (4) second space; (5) evaporator of multi-stage heat pipe heat pump composite system; (6) fan room; (7) Equipment room; (8) Air supply device; (9) Humidification device; (10) Cabinet door.

Specific implementation methods :

The technical scheme of the present invention is described in detail below in conjunction with accompanying drawing and embodiment:

A data center heat dissipation solution, including a chassis (1), a backplane (2), a first space (3), a second space (4), an evaporator (5) of a multi-stage heat pipe heat pump composite system, and a fan room (6 ), equipment room (7), air supply device (8), humidification device (9), cabinet door (10) and circuit control components, the whole system can be made into a chassis containing N cabinets according to needs;

FIG. 1 is a schematic diagram of the internal space division of the chassis of the data center heat dissipation solution of the present invention. The chassis (1) includes front and rear walls parallel to each other, left and right side walls connecting the front and rear walls, upper and lower walls perpendicular to the chassis, and a backplane (2) parallel to the front and rear walls of the chassis; the backplane (2) The chassis (1) is divided into two spaces, the first space (3) and the second space (4), respectively, and a channel is left between the backplane (2) and the left and right side walls of the chassis for the first The conduction area between the space (3) and the second space (4); in this way, the air inside the entire chassis circulates around the backplane (2) in a cycle.

Figure 2 is a three-dimensional view of the internal structure of the chassis. On the basis of Figure 1, the first space (3) and the second space (4) inside the chassis are separated into several cabinets by several side-by-side heat exchangers (5), which are respectively the equipment placement area (7) and Fan room (6); this heat exchanger (5) is the evaporator of the multi-stage heat pipe heat pump compound system, and some units in the heat pump cooling mode or heat pipe cooling mode can be selected to replace intermittent work according to the load demand , which can prolong the service life of the heat exchanger and improve the overall cooling efficiency. The server system is set in the equipment placement area (7), the air supply device (8) and the air humidification device (9) are placed in the fan room (6), and each cabinet is provided with a door (10), requiring The first and second spaces (3; 4) close to the two side walls have four fan chambers for the cabinet without a backplane, and the middle server system area in the chassis can be equipped with corresponding fan chambers (6) according to the air volume requirements, so as to ensure that each The server system area in a cabinet has a sufficient amount of air volume.

Fig. 4 is a cabinet implementation diagram of the heat dissipation solution for this data center. When this data center line heat dissipation scheme is working, the multi-stage heat pipe heat pump composite system can selectively operate the multi-stage heat pump cooling mode or the multi-stage heat pipe cooling mode according to the difference between the required indoor temperature and the outdoor temperature. The heat dissipation principle and air flow direction inside the chassis are the same. For the internal circulation in Figure 4, as shown in the figure, starting from the fan room on the left side wall of the first space of the chassis, along the direction of the wind in the air duct, the heat exchanger on the left side wall of the first group of server systems in the first space The released cold air enters the server system, and the hot air generated by the server system enters the heat exchanger on the right side wall for cooling, and the cooled air enters the next group of server systems, and flows repeatedly to the right side wall of the first space The fan room then enters the fan room on the right side wall of the second space to carry out the refrigeration cycle of the second space, which is the same as the circulation mode of the first space, and finally the wind is sent into the fan room on the left side wall of the second space, which is different from the exchange, a closed inner loop is completed.

Figure 5 is a link diagram of heat exchangers inside and outside a single cabinet in this chassis. When the whole system is working, the evaporator (5) inside the chassis is in contact with the high-temperature heat source emitted by the server system, and the liquid working medium is heated by the high-temperature heat source in the evaporator to evaporate into gas, absorb heat, and evaporate the formed gas and Part of the liquid intermediate medium that has not evaporated is mixed with each other in high-speed flow to form a gas-liquid two-phase fluid. They are output from the evaporator (5) and enter the condenser (11) through the intermediate equipment. The condenser (11) is in contact with a low-temperature heat source, and the gaseous state The working medium in the condenser is cooled by a low-temperature heat source to condense into a liquid and release heat. The liquid working medium formed by condensation enters the evaporator (11) through the intermediate equipment at the output end of the condenser and the input end of the evaporator for the next cycle. The entire heat exchange system has been circulating.

In this way, this multi-stage heat pipe heat pump composite refrigeration technology has obvious superior performance (including energy saving rate and room temperature control quality), not only can realize the complementary advantages of heat pipe and heat pump refrigeration technology, but also can realize heat pipe and heat pump refrigeration with the same set of equipment , not only can make full use of the energy-saving technology of natural heat exchange, but also can solve the problems of large heat exchange temperature difference loss and low total heat exchange efficiency of the existing single-stage heat pipe heat pump refrigeration device; this system can set the temperature according to the indoor temperature and the outdoor temperature difference, selectively operate the multi-stage heat pump cooling mode or the multi-stage heat pipe cooling mode, and achieve energy-saving operation under the premise of ensuring indoor cooling requirements; when the outdoor temperature is high or the indoor load is too large, the multi-stage heat pipe heat pump composite system Running the heat pump cooling mode, the working principle is the same as that of general inverter or non-inverter air conditioners. The indoor heat is dissipated to the outdoor space through the vapor compression refrigeration cycle to achieve the cooling effect of the indoor space; when the outdoor temperature is lower than a certain value of the indoor temperature, the compression When the unit is turned off, the unit automatically enters the heat pipe cooling mode. The gaseous refrigerant is brought to the condenser through the heat pipe energy-saving module to condense and release heat, and finally becomes condensate. The condensate flows to the evaporator to absorb heat under the action of the heat pipe energy-saving module. The entire system The indoor heat is transferred to the outdoor through the heat pipe energy-saving module.

Claims (7)

1. data center's heat sink conception comprises a cabinet (1), is arranged at some server cabinets and a heat abstractor in this casing, it is characterized in that, also comprises heat exchanger (5) and fan room (6); Said cabinet comprises the front and rear wall that is parallel to each other, the left and right sides wall that connects front and rear wall, the last lower wall of vertical said cabinet, the backboard (2) parallel with said cabinet front and rear wall; Said backboard is partitioned into former and later two spaces with said cabinet, is respectively first space (3) and second space (4); First space (3), second space (4) of said cabinet inside are isolated into some racks each other by some heat exchangers that are arranged side by side (5), are respectively equipment rest area (7) and fan room (6); Said server system is arranged in the said equipment rest area (7); Said air-supply arrangement (8) and air humidifying device (9) are placed on said fan room (6); Said each rack all is provided with Yishanmen (10); Interior first, second space (3 of said cabinet near the two side; 4) rack is the fan room that does not have backboard, both can be the server system air-supply and the humidification in first, second space, air flow that again can first, second space of conducting; Said intermediate server system area can be provided with corresponding fan room (6) according to the air quantity demand; Said heat exchanger (5) is the evaporator of multistage heat pipe hot pump hybrid system, and it is installed in side-walls of each group server cabinet, first, second space (3; 4) be divided into some server apparatus rest areas (7) and fan room (6); Begin the direction of wind in the air channel like this from the left side wall fan room in first space of cabinet; The heat exchanger of the left side wall of first group the server system in first space discharges cold air and gets into server system; The air of the heat that server system produces gets into its right side wall heat exchanger and cools off, and the air of cooling gets into next group server system, and repeating successively flows down is circulated to the right side wall fan room in first space; Get into the second space right side wall fan room then; Carry out the kind of refrigeration cycle in second space, it is identical with the first space circulation pattern, and after wind is admitted to the left side wall fan room in second space; With first space exchange, then just accomplished the inner loop of a sealing.

2. a kind of data center according to claim 1 heat sink conception; It is characterized in that; Said heat exchanger (5) is the evaporator of multi-stage heat pipe heat pump hybrid system; The side-walls that it is installed in each group server cabinet is slit into some server systems district and fan room to first, second spatial; The evaporator of said each group multi-stage heat pipe heat pump hybrid system is arranged side by side by the evaporator that is no less than two heat pipe hot pump recombiner units and constitutes; And the evaporator of each grade heat pipe hot pump recombiner unit has the independent input/output terminal of oneself respectively; The condenser of the heat pipe hot pump recombiner unit corresponding with it is connected; Form one by one independently partial circulating loop, they have independent compressed machine and circulating pump, are independent of each other mutually during its work operation.

3. according to claim 1 and 2 described a kind of data center heat sink conceptions; It is characterized in that; Said heat exchanger (5) is the evaporator of multi-stage heat pipe heat pump hybrid system; And the evaporator of the multi-stage heat pipe heat pump hybrid system of each group is arranged side by side by the evaporator that is no less than two heat pipe hot pump recombiner units and constitutes, and it has the condenser of the heat pipe hot pump recombiner unit of own correspondence to be connected respectively, forms one by one independently heat pipe hot pump hybrid system refrigeration partial circulating; The combination that can optionally move arbitrarily small cycling element in each group multi-stage heat pipe heat pump hybrid system like this according to the heat radiation needs of server system comes work.

4. a kind of data center according to claim 1 heat sink conception is characterized in that, is four fan room that do not have backboard to separate in the middle of being set near the rack in first, second space of left and right sides wall in the said cabinet; Said fan room is provided with air-supply arrangement and damping device; Said intermediate server system area can be provided with corresponding fan room according to the air quantity demand, and the dense degree of its fan room is set according to the demand of server system.

5. according to claim 1 and 4 described a kind of data center heat sink conceptions; It is characterized in that; Be provided with air-supply arrangement (8) in the said fan room; The number of the air-supply arrangement in each fan room and the size of air output are decided according to the demand of the server system between two fan room; If a plurality of server systems are arranged between the fan room, then can increase the number of air-supply arrangement in the centre or accelerate the rotating speed of each air-supply arrangement, the cold air of the evaporator of farthest server system sidewall is sent in the space, server system place.

6. according to claim 1 and 4 described a kind of data center heat sink conceptions; It is characterized in that; Be provided with damping device (9) in the said fan room, the size of the unlatching of damping device and humidification amount is regulated through the feedback information of corresponding sniffer according to the demand of the server system of each group automatically.

7. a kind of data center according to claim 1 heat sink conception; It is characterized in that; The placement of each server will be in the minimum state that keeps out the wind in the said server system; The largest face of cross-sectional area that is server is parallel with the wind direction in the air channel, and the cold air of sending into from the sidewall evaporator is got into, and the hot-air that server system sheds gets into next group evaporator along wind direction and cools off.

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