CN205783464U - A kind of heat dissipation system for computer room - Google Patents

Abstract

A heat dissipation system for a computer room, comprising: a heat dissipation unit arranged outside the top of the computer room, the heat dissipation unit includes a natural cooling source cooling module and a mechanical refrigeration module, and has an air inlet connected to the computer room and an air supply port connected to the computer room, And an outdoor air inlet and an outdoor air outlet connected to the outdoor environment; an indoor air flow path is formed in the heat dissipation unit between the air inlet and the air supply port, and an outdoor air flow is formed in the heat dissipation unit between the outdoor air inlet and the outdoor air outlet The outdoor air flow path and the indoor air flow path are isolated from each other, and the indoor air and the outdoor air perform heat exchange in the cooling unit. The utility model makes full use of the flow trend of cold and hot air, has small wind resistance, reduces the energy consumption of the fan, and does not occupy the internal space of the machine room, which is convenient for rapid parallel expansion according to the cooling needs, and meets various cooling needs.

Description

A machine room cooling system

technical field

The utility model relates to a heat dissipation system for a data computer room, in particular to a heat dissipation system for a computer room with a top-mounted unit.

Background technique

With the high-density integration of IT equipment in the computer room, the phenomenon that the heat dissipation of the equipment is getting higher and higher has attracted strong attention from all walks of life. According to the research, the current related carbon emissions in the IT/telecommunication field have become one of the largest sources of greenhouse gas emissions. According to statistics, the cooling energy consumption of the data center accounts for about 40% of the total power consumption of the computer room. At present, the cooling of the computer room mainly depends on the air conditioner, so reducing the power consumption of the computer room air conditioner is one of the means to effectively reduce the PUE value of the computer room. The PUE (Power Usage Effectiveness) value is the ratio of all the energy consumed by the data center to the energy consumed by the IT load, and is an internationally accepted measure of the power usage efficiency of the data center. At present, the PUE value of foreign advanced data center computer rooms is usually less than 2, while the PUE value of most data centers in my country is between 2-3. Therefore, while ensuring the safe and reliable operation of the data center, the energy consumption of the air conditioner can be reduced through reasonable design. It is urgent to reduce the PUE value of the computer room.

In order to solve the heat dissipation problem in the computer room, various computer room air supply systems have been designed in the industry to cooperate with the air duct in the computer room to dissipate heat from the internal environment of the computer room, such as the Chinese utility model patent with the patent number 201520050095.8, and the Chinese utility model patent with the patent number 201520049747.6 And the computer room air supply system or computer room disclosed by the Chinese utility model patent No. 201310084125.2, by setting air ducts and air conditioners in the computer room, the cold air produced by the air conditioner enters the static pressure box, and then enters the computer room through the air supply channel, The environment in the equipment room is cooled. The Chinese Utility Model Patent No. 201420713841.2 discloses an air supply system for a machine room. An air supply device is installed in the machine room, and a closed air supply channel is set on the floor of the machine room. The top plate of the air supply channel is the floor, and the top plate of the air supply channel The air outlet is set, and the cold air sent into the air supply channel by the air supply device is discharged from the air outlet, thereby cooling the environment in the machine room. In order to achieve a large cooling capacity, it means that the volume of the unit is also larger. When the air conditioning unit is installed in the machine room, it will take up more space in the machine room, and limited by the internal space of the machine room, the air conditioning unit has poor expandability and cannot cope with With higher heat dissipation requirements, the air conditioning unit can only run around the clock, which is not conducive to energy saving and consumption reduction.

The Chinese Utility Model Patent No. 200920105584.3 discloses an air conditioner for a computer room. The air conditioner for a computer room includes an indoor air circulation duct arranged outside the computer room and connected to the inside of the computer room, and an air circulation duct arranged outside the computer room and connected with the indoor air circulation air duct. At least one outdoor heat exchanger that is connected to the air duct and uses outdoor natural energy to conduct non-contact heat exchange with the air in the indoor air circulation duct. The energy is used for cooling or heating, which reduces the space occupied in the machine room, facilitates the adjustment of the cooling or heating capacity of the air conditioner, and realizes the heat exchange between indoor air and outdoor air without ventilation. The Chinese utility model patent application with the application number 200910078498.2 discloses a heat dissipation system, which is arranged outside the machine room, and includes a wet film and a heat exchanger, and a fan is arranged in the air duct between the wet film and the heat exchanger. The humid air after the wet film is blown into the heat exchanger from the air inlet of the heat exchanger. The heat exchanger has an air inlet and outlet for entering/exiting humid air, and a hot air inlet and a cold air outlet connected to the machine room or equipment cabinet , the first air duct is formed between the air inlet and the air outlet, the second air duct is formed between the hot air inlet and the cold air outlet, and the first air duct is isolated from the second air duct. Although the above two heat dissipation systems solve the problem of the built-in unit occupying the space of the machine room, the cooling scheme of the existing heat dissipation system does not make full use of the favorable airflow organization of hot air rising and cold air falling, resulting in high fan power; and partial cooling In the scheme, the distance of sending and returning air is usually long, which will also cause additional wind resistance, resulting in high fan power.

Utility model content

The purpose of the utility model is to provide a cooling system for a machine room with a top-mounted unit, which can reasonably plan the airflow organization and reduce the energy consumption of the air conditioner.

In order to achieve the above object, the utility model takes the following technical solutions:

A heat dissipation system for a machine room, comprising: a heat dissipation unit arranged outside the top of the machine room, the heat dissipation unit includes a natural cooling source cooling module and a mechanical refrigeration module, and has an air inlet connected to the machine room and an air supply port connected to the machine room, And an outdoor air inlet and an outdoor air outlet connected to the outdoor environment; an indoor air flow path is formed in the heat dissipation unit between the air inlet and the air supply port, and an outdoor air flow is formed in the heat dissipation unit between the outdoor air inlet and the outdoor air outlet The outdoor air flow path and the indoor air flow path are isolated from each other, and the indoor air and the outdoor air perform heat exchange in the cooling unit.

Further, the machine room is provided with a closed hot aisle communicating with the air inlet of the cooling unit, or a closed cold aisle communicating with the air outlet of the cooling unit.

Further, the natural cooling source cooling module includes an indoor air filter, an evaporative cooling heat exchanger, and an outdoor circulation fan; the mechanical refrigeration module includes a condenser, an evaporator, a compressor, and an indoor circulation fan, and the condenser and The evaporator and the compressor are circulated and communicated through refrigerant pipelines; the indoor air flow channel has an indoor air inflow channel communicated with the indoor air inlet end of the evaporative cooling heat exchanger and communicated with the indoor air outlet end of the evaporative cooling heat exchanger an indoor air outflow channel, the outdoor air flow channel has an outdoor air inflow channel communicated with the outdoor air inlet end of the evaporative cooling heat exchanger and an outdoor air outflow channel communicated with the outdoor air outlet end of the evaporative cooling heat exchanger, Outdoor air and indoor air exchange heat at the evaporative cooling heat exchanger, which is located on the indoor air outflow channel.

Further, the heat dissipation unit includes a first modular cabinet and a second modular cabinet that are used in combination independently of each other; the cooling module of the natural cold source and the condenser in the mechanical refrigeration module are arranged in the first modular cabinet, and the The evaporator, compressor and indoor circulation fan in the mechanical refrigeration module are arranged in the second module cabinet.

Further, the indoor air filter is located behind the air inlet, the evaporative cooling heat exchanger is arranged behind the indoor air filter on the indoor air circulation path, and the outdoor circulating fan is located on the outdoor air flow path.

Further, the condenser is located on the outdoor air outflow channel, and the outdoor circulating fan is arranged at the outdoor air outlet.

Further, the indoor circulation fan is arranged at the air outlet.

Further, the natural cooling source cooling module further includes a spraying device for spraying water to the evaporative cooling heat exchanger, and the spraying device is connected to a spraying water circulation system through a pipeline.

Further, the spraying device is arranged above the evaporative cooling heat exchanger, the condenser is arranged above the spraying device, and the outdoor circulating fan is located above the condenser.

Further, the indoor circulation fan is arranged at the lower part of the second modular cabinet.

It can be seen from the above technical solutions that, compared with the prior art, the heat dissipation system of the present invention puts the heat dissipation unit on top, making full use of the flow trend of cold and hot air flow, with small wind resistance and reduced fan energy consumption; at the same time, it saves the internal space of the machine room , the number of heat dissipation units can be set according to the cooling demand, it has good scalability, and the units can be flexibly arranged according to the external space restrictions. Furthermore, the use of modular cooling units can effectively utilize natural cooling sources, reduce energy consumption, and achieve an organic combination of space saving, rapid scalability, rational design of air supply and return, and energy-saving efficiency.

Description of drawings

In order to illustrate the embodiment of the utility model more clearly, the accompanying drawings that need to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the utility model , for those skilled in the art, other drawings can also be obtained according to these drawings on the premise of not paying creative work.

Fig. 1 is the structural representation of the utility model embodiment 1;

Fig. 2 is the top view of Fig. 1;

Fig. 3 is the structural representation of embodiment 1 cooling unit;

Fig. 4 is the top view of Fig. 3;

Fig. 5 is the structural representation of embodiment 1 evaporative cooling heat exchanger;

Fig. 6 is the structural representation of the utility model embodiment 2;

Fig. 7 is a schematic diagram of another combination mode of the cooling unit of the present invention;

Fig. 8 is a schematic structural diagram of the heat dissipation unit in Embodiment 3 of the present utility model.

detailed description

Example 1

As shown in Fig. 1 and Fig. 2, the heat dissipation system of the computer room in this embodiment includes multiple groups of cooling units 3 arranged outside the top of the computer room 4, and for the sake of simplicity, only one group of cooling units 3 is shown in Fig. 1 . The heat dissipation unit 3 has an air inlet connected to the machine room and an air supply port connected to the machine room. The air inlet and the air supply port are located at the bottom of the heat dissipation unit. The heat dissipation unit 3 also has an outdoor air inlet and an outdoor air outlet connected to the outdoor environment. An outdoor air flow channel is formed in the heat dissipation unit between the outdoor air inlet and the outdoor air outlet, and an indoor air flow channel is formed in the heat dissipation unit between the air inlet and the air supply port, and the outdoor air flow channel and the indoor air flow channel are isolated from each other.

The machine room of this embodiment is provided with a closed heat passage 1, and the air inlet of the heat dissipation unit is connected with the closed heat passage 1. The indoor hot air enters the heat dissipation unit from the air inlet at the bottom of the heat dissipation unit through the closed heat passage 1. The air outlets on both sides at the bottom of the unit blow back into the machine room 4 from the top of the machine room. When a closed hot aisle is provided in the machine room, cold aisles are formed in other spaces in the machine room except the closed hot aisle.

Referring to Fig. 3 and Fig. 4, the cooling unit 3 of the present embodiment includes an indoor air filter 3-1, an evaporative cooling heat exchanger 3-2, an outdoor circulating fan 3-3, a condenser 3-5, and an evaporator 3-6 , a compressor 3-7, an indoor circulating fan 3-8 and a cabinet 3-9, the cabinet 3-9 includes a first module cabinet 3-9a and a second module cabinet 3-9b. Among them, the indoor air filter 3-1, the evaporative cooling heat exchanger 3-2, and the outdoor circulating fan 3-3 form a natural cold source cooling module, the condenser 3-5, the evaporator 3-6, the compressor 3-7, The indoor circulating fans 3-8 form a mechanical refrigeration module. Using independent modular cabinets, different numbers and positions can be combined according to the cooling capacity requirements of the computer room, space requirements, and natural environment cold sources to form cooling units.

The directions front and rear in the following descriptions are defined by the direction of air circulation. For example, when the air flows in the horizontal direction, the front and rear positions are also in the horizontal direction. When the air flows in the vertical direction, the front and rear positions are also in the horizontal direction. The position is correspondingly changed to the upper and lower positions in the vertical direction. In the drawings, hollow arrows indicate the direction of indoor air flow, and arrows filled with hatched lines indicate the direction of outdoor air flow. The indoor air filter 3-1 is arranged in the first module cabinet 3-9a, behind the air inlet of the heat dissipation unit, and the evaporative cooling heat exchanger 3-2 is located downstream of the indoor air filter 3-1, that is, the evaporative cooling heat exchange The device 3-2 is arranged behind the indoor air filter 3-1 on the indoor air circulation path. The indoor air flow channel has an indoor air inflow passage communicated with the indoor air inlet end of the evaporative cooling heat exchanger 3-2 and an indoor air outflow passage communicated with the indoor air outlet end of the evaporative cooling heat exchanger 3-2, and the outdoor air The flow channel has an outdoor air inflow channel communicated with the outdoor air inlet end of the evaporative cooling heat exchanger 3-2 and an outdoor air outflow channel communicated with the outdoor air outlet end of the evaporative cooling heat exchanger 3-2.

Fig. 5 is a schematic structural diagram of the evaporative cooling heat exchanger of this embodiment. The evaporative cooling heat exchanger includes several heat exchange tubes 3-2a arranged at intervals, and the heat exchange tubes 3-2a are arranged between a pair of end plates 3-2b. In between, the end plate 3-2b is connected to a pair of opposite side plates 3-2c. Indoor air enters the heat exchange tube 3-2a from one end of the evaporative cooling heat exchanger 3-2 through the indoor air inflow channel, circulates in the heat exchange tube 3-2a, and then flows from the other end of the evaporative cooling heat exchanger 3-2 Outflow, into the indoor air outflow channel; outdoor air enters the evaporative cooling heat exchanger 3-2 from the upper or lower side of the evaporative cooling heat exchanger 3-2 through the outdoor air inflow channel, and circulates outside the heat exchange tube 3-2a , and then flow out from the lower side or upper side of the evaporative cooling heat exchanger 3-2, and enter the outdoor air outflow channel. After the outdoor air and indoor air are heat-exchanged at the evaporative cooling heat exchanger 3-2, the cooled indoor air flows from the indoor air outflow channel through the air supply port of the cooling unit 3 into the air supply channel 2, and is sent into the machine room 4 , the outdoor air is discharged from the outdoor air outflow channel to the outdoor environment. The evaporative cooling heat exchanger of the heat dissipation unit of the utility model can also adopt the general heat exchanger sold on the market.

The condenser 3-5 is arranged in the first module cabinet 3-9a and is located on the outdoor air passage. The condenser 3-5 in this embodiment is located above the evaporative cooling heat exchanger 3-2, and the outdoor air outlet of the cooling unit Located above the condenser 3-5, the outdoor circulation fan 3-3 is arranged at the outdoor air outlet. The evaporator 3-6, the compressor 3-7, and the indoor circulation fan 3-8 are arranged in the second modular cabinet 3-9b. The compressor 3-7, the evaporator 3-6 and the condenser 3-5 are connected to each other through the refrigerant circulation pipeline. The evaporator 3-6 is located on the indoor air outflow channel. At the entrance of the outflow channel, the indoor circulation fan 3-8 is arranged at the air outlet at the bottom of the second module cabinet 3-9b, and the cooled air is sent out from the bottom of the cabinet.

The working principle of the heat dissipation system in this embodiment is: the hot air in the machine room enters the heat dissipation unit 3 through the closed heat channel 1, and the heat dissipation unit 3 is combined with two modules to realize the air processing function, and the indoor air first passes through the natural cooling source to cool the module Use the outside air for the first-stage treatment, use the natural cooling source as much as possible for cooling treatment, minimize energy consumption, and then conduct the second-stage treatment for the indoor air in the mechanical refrigeration module, and finally meet the use requirements.

The two modules of the cooling unit can be combined in different quantities and in different ways according to needs, and can be modularized and expanded in parallel as the heat dissipation of the data center increases. The two modules in the heat dissipation unit share the indoor circulation fan and the outdoor circulation fan. The natural cooling source cooling module can be a fresh air cooling system, a direct evaporative cooling system, an indirect evaporative cooling system, an air-to-air heat exchange cooling system, an ethylene glycol cooling system, or a heat pipe cooling system, etc. The machine can use fixed frequency or variable frequency compressor.

When the closed hot aisle is installed in the machine room, the hot return air in the machine room enters the heat dissipation unit on the top of the machine room through the closed hot aisle 1, making full use of the advantages of the hot fluid rising, the air path is close, the wind resistance is small, and the power consumption of the fan is saved. It can also reduce the heat transfer of the hot return air to other areas in the machine room, making the cooling more efficient; after being cooled by the cooling unit, the indoor return air is diffused downward from the air supply port of the cooling unit and sent into the machine room. At this time, the supply air temperature is low, The downward airflow organization makes full use of the advantage of the cold fluid descending, further saves the power consumption of the fan, and effectively reduces the PUE of the machine room. The design of no air duct not only reduces the initial investment, but also greatly reduces the wind resistance and energy consumption.

Example 2

As shown in FIG. 6 , the difference between this embodiment and Embodiment 1 is that this embodiment is a system in which the heat dissipation unit is applied to close a cold aisle, and Embodiment 1 is a system in which a heat dissipation unit is applied to a closed hot aisle. The indoor air cooled by the heat dissipation unit 3 is discharged into the closed cold aisle 2 from the air outlet at the bottom of the heat dissipation unit 3 . The cooling unit 3 can be arranged left and right (Fig. 4), and also can be arranged front and back (Fig. 7).

When the closed cold aisle is installed in the computer room, the air cooled by the heat dissipation unit enters the computer room from the air supply port of the heat dissipation unit through the closed cold aisle to cool down the server and other equipment; the hot return air generated by the equipment diffuses into the heat dissipation unit for cooling. Cool down. Similarly, the favorable airflow organization and the design of no duct can reduce the power of the fan and reduce the PUE of the equipment room.

Example 3

As shown in Figure 8, the difference between this embodiment and Embodiment 1 is that the natural cold source cooling module also includes a spray device 3-4, and the heat exchange and cooling effect is enhanced through the spray device. The spray device 3 of this embodiment -4 is arranged above the evaporative cooling heat exchanger 3-2, and the spraying device 3-4 is connected to the spraying water circulation system (not shown) through the pipeline, and the cooling water is provided to it by the spraying water circulation system, and the water is sprayed Drench on the evaporative cooling heat exchanger 3-2. The spray water circulation system includes a water pump connected by pipes, a water receiving tray and an external supply water source, and the water receiving tray is located below the evaporative cooling heat exchanger 3-2.

The heat dissipation system of the utility model can be applied to a data computer room with closed hot aisles and/or closed cold aisles, for example, the hot return air of every two rows of servers in the computer room can diffuse into the cooling unit, or enter the cooling unit through the closed hot channel, Multiple modules can share the air supply duct; or the air supply from the cooling unit can be diffused directly into the computer room, or can be sent into the closed cold aisle between two rows of servers. The utility model arranges the heat dissipation unit outside the top of the machine room without being limited by the space in the machine room, not only reduces the occupied space of the machine room, but also facilitates rapid parallel expansion according to cooling needs, and makes full use of the flow trend of cold and hot air flow, with small wind resistance , which reduces the energy consumption of the fan; at the same time, the modular heat dissipation unit is adopted, and the mechanical refrigeration module and the natural cooling source cooling module can be flexibly combined and placed according to the air duct layout requirements and external space conditions.

Each part in this specification is described in a progressive manner, and each part focuses on the difference from other parts, and the same or similar parts of each part can be referred to each other. The combination relationship between these components is not just the form disclosed in the embodiment, the above description of the disclosed embodiment enables those skilled in the art to realize or use the utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. a heat dissipation system for computer room, it is characterised in that including: the heat radiation machine being arranged at outside machine room top Group, described heat radiation unit includes natural cooling source refrigerating module and mechanical refrigeration module, and has and connect in machine room Logical air inlet and with the air outlet connected in machine room, and the outdoor air inlet that connects with outdoor environment and room Outer air outlet；Between described air inlet and air outlet in heat radiation unit air flow channel, described room in forming chamber Between external air inlet mouth and outdoor air outlet in heat radiation unit forming chamber outer air runner, outdoor air runner and Room air runner is mutually isolated, and room air and outdoor air carry out heat exchange in heat radiation unit.

Heat dissipation system for computer room the most according to claim 1, it is characterised in that: arrange in described machine room Have and the closing passage of heat that connects of air inlet of heat radiation unit, or be provided with the air outlet with the unit that dispels the heat and connect The cold passage of closing.

Heat dissipation system for computer room the most according to claim 1 and 2, it is characterised in that: described the coldest Source refrigerating module includes indoor air filter, evaporation cooling heat exchanger and outdoor circulating wind machine；Described machinery Refrigeration module includes condenser, vaporizer, compressor and indoor circulation blower fan, described condenser and evaporation Device, compressor are by refrigerant tubing circulation connection；

Described room air runner has the Interior Space that the room air inlet end with evaporation cooling heat exchanger connects Gas flow channel and the room air connected with the room air outlet side of evaporation cooling heat exchanger flow out logical Road, described flow of outside air road has the outdoor sky connected with the outdoor air inlet end of evaporation cooling heat exchanger Gas flow channel and the outdoor air connected with the outdoor air outlet side of evaporation cooling heat exchanger flow out logical Road, outdoor air and room air carry out heat exchange at evaporation cooling heat exchanger, and described vaporizer is positioned at room On interior air flow pass.

Heat dissipation system for computer room the most according to claim 3, it is characterised in that: described heat radiation unit bag Include separate the first module cabinet being applied in combination and the second module cabinet；Described natural cooling source refrigerating module and institute State the condenser in mechanical refrigeration module to be arranged in the first module cabinet, the evaporation in described mechanical refrigeration module Device, compressor and indoor circulation blower fan are arranged in the second module cabinet.

Heat dissipation system for computer room the most according to claim 4, it is characterised in that: described room air mistake After filter is positioned at air inlet, described evaporation cooling heat exchanger is arranged at Interior Space on room air circulation path After air filter, described outdoor circulating wind machine is positioned on outdoor air runner.

Heat dissipation system for computer room the most according to claim 3, it is characterised in that: described condenser is positioned at Outdoor air flows out on passage, and described outdoor circulating wind machine is arranged at outdoor air outlet.

Heat dissipation system for computer room the most according to claim 3, it is characterised in that: described indoor circulation wind Machine is arranged at air outlet.

Heat dissipation system for computer room the most according to claim 3, it is characterised in that: described natural cooling source is cold But module also includes the spray equipment to described evaporation cooling heat exchanger water spray, and described spray equipment passes through pipeline It is connected with water spray circulation system.

Heat dissipation system for computer room the most according to claim 8, it is characterised in that: described spray equipment sets Being placed in the top of described evaporation cooling heat exchanger, described condenser is arranged at above described spray equipment, described Outdoor circulating wind machine is positioned at above described condenser.

Heat dissipation system for computer room the most according to claim 4, it is characterised in that: described indoor circulation wind Machine is arranged at the bottom of the second module cabinet.