CN211792609U - Indirect evaporative cooling air conditioning unit for data center - Google Patents

Indirect evaporative cooling air conditioning unit for data center Download PDF

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Publication number
CN211792609U
CN211792609U CN202020293354.0U CN202020293354U CN211792609U CN 211792609 U CN211792609 U CN 211792609U CN 202020293354 U CN202020293354 U CN 202020293354U CN 211792609 U CN211792609 U CN 211792609U
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CN
China
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unit
air
evaporative cooling
indirect evaporative
water
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Expired - Fee Related
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CN202020293354.0U
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Chinese (zh)
Inventor
黄翔
金洋帆
陈梦
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Xian Polytechnic University
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Xian Polytechnic University
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Priority to CN202020293354.0U priority Critical patent/CN211792609U/en
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Expired - Fee Related legal-status Critical Current
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Abstract

The utility model discloses an indirect evaporative cooling air conditioning unit for a data center, which comprises a unit shell, wherein a primary air inlet and a primary air supply outlet are respectively arranged on two opposite side walls of the unit shell, and an air filter a, an indirect evaporative cooling section, an evaporator combined unit, a humidifying section, a water baffle b and a primary air blower are sequentially arranged in the unit shell according to the flowing direction after primary air enters; a secondary air outlet is arranged on the unit shell, and secondary air inlets are arranged on the side walls of the unit shell; a secondary air exhaust fan is arranged at the secondary air exhaust outlet, and a condenser combination unit is arranged between the secondary air exhaust fan and the indirect evaporative cooling section; also comprises an expansion valve and a compressor; the device also comprises a control unit which is respectively connected with the indirect evaporation cooling section, the evaporator combined unit, the humidifying section, the condenser combined unit and the primary air blower. The air conditioning unit can greatly reduce the energy consumption of the data center.

Description

Indirect evaporative cooling air conditioning unit for data center
Technical Field
The utility model belongs to the technical field of air conditioning system equipment, concretely relates to data center is with indirect evaporative cooling air conditioning unit.
Background
With the social development, the data information amount is rapidly increasing, and the density of data centers is also increasing. Data center in the past presents decentralized, miniaturized overall arrangement, and following big data, cloud computing's the rise in future, large-scale data center can be more and more, and data processing computer lab's single rack density of generating heat also can be more and more high, in order to ensure data processing computer lab equipment's normal operating, need cool down the computer lab to satisfy the operation humiture demand of equipment. However, the cooling mode of the traditional data processing machine room is mechanical compression type refrigeration and needs cooling all the year round, so that the energy consumption of an air conditioning system of the data center is huge, and the continuous development of energy conservation and emission reduction in China is not met.
Aiming at the high energy consumption of the data center, the related data center design specifications improve the air supply temperature of the data processing machine room, which provides favorable conditions for the application of the evaporative cooling technology. The evaporative cooling technology uses water as a refrigeration medium, and is economical and environment-friendly. At present, the indirect evaporative cooling technology is popularized and applied in a large number in a data center, the indirect evaporative cooling technology can not only meet the cooling requirement of a data processing machine room, but also ensure the air cleanliness of the machine room, and simultaneously, the natural cooling technology is utilized to the maximum extent, so that the running time of the traditional mechanical refrigeration air conditioner is reduced, and the energy consumption of the data center is greatly reduced.
However, in the indirect evaporative cooling air conditioning unit adopted in the current data center, the resistance of the evaporator and the condenser of the mechanical refrigeration module in the whole indirect evaporative cooling air conditioning unit is large, the energy consumption of the unit transmission and distribution system is additionally increased, and the humidity control of the data processing machine room is not accurate enough.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a data center is with indirect evaporative cooling air conditioning unit adopts reasonable unit structural style can reduce the unit resistance, realizes the comparatively accurate humidification effect of unit simultaneously, improves the efficiency of whole unit, and then greatly reduced data center's energy consumption.
The technical scheme adopted by the utility model is that the indirect evaporative cooling air conditioning unit for the data center comprises a unit shell, wherein a primary air inlet and a primary air outlet are respectively arranged on two opposite side walls of the unit shell, and an air filter a, an indirect evaporative cooling section, an evaporator combined unit, a humidifying section, a water baffle b and a primary air blower are sequentially arranged in the unit shell according to the flowing direction of primary air after entering; a secondary air outlet is arranged on the unit shell corresponding to the top of the indirect evaporative cooling section, and secondary air inlets are arranged on two side walls of the unit shell corresponding to two opposite side surfaces of the indirect evaporative cooling section; a secondary air exhaust fan is arranged at the secondary air exhaust outlet, and a condenser combination unit is arranged between the secondary air exhaust fan and the indirect evaporative cooling section; the condenser combination unit, the expansion valve, the evaporator combination unit and the compressor are connected through refrigerant pipes in sequence to form a circulating closed loop; the control unit is arranged below the primary air blower and is respectively connected with the indirect evaporative cooling section, the evaporator combined unit, the humidifying section, the condenser combined unit, the secondary air exhaust fan and the primary air blower.
The utility model is also characterized in that,
and an air filter b is arranged at the position of the secondary air inlet.
The indirect evaporative cooling section comprises a water baffle a, a water distributor, an indirect evaporative cooling heat exchange core and a water collecting tank b which are sequentially arranged from top to bottom, and the water distributor is connected with the water collecting tank b through a water pipe b; the secondary air inlet is positioned on the corresponding side wall of the unit shell between the indirect evaporative cooling heat exchange core body and the water collecting tank b; the water pipe b is provided with a water pump b, and the water pump b is connected with the control unit.
The indirect evaporative cooling heat exchange core body consists of one of a plate-fin circular tube, a horizontal circular tube or a vertical circular tube.
The evaporator combined unit comprises two evaporators which are arranged in a V shape and are connected in parallel, and an electric air valve b is arranged between the two evaporators; the condenser combination unit comprises two condensers which are arranged in a V shape and are connected in parallel, an electric air valve a is arranged between the two condensers, and the two condensers, a compressor, two evaporators and an expansion valve which are connected in parallel are sequentially connected through a refrigerant pipe to form a closed circulation loop; the electric air valve b and the electric air valve a are respectively connected with the control unit.
The humidifying section comprises a high-pressure spraying water distributor vertically arranged in the unit shell, the nozzle direction of the high-pressure spraying water distributor faces a water baffle b, a water collecting tank a is arranged below the high-pressure spraying water distributor, the high-pressure spraying water distributor is connected with the water collecting tank a through a water pipe a, a water pump a is further arranged on the water pipe a, and the water pump a is connected with the control unit.
The secondary air exhaust fan is an axial flow fan.
The primary air blower is a centrifugal fan.
The utility model has the advantages that:
(1) the utility model relates to a data center is with indirect evaporative cooling air conditioning unit, the blast gate of condenser combination unit and evaporator combination unit is electronic, can change according to outdoor meteorological parameter, switch the mode of operation and control opening or closing of electronic blast gate, the resistance of forced draught blower and secondary exhaust fan can be reduced to this kind of design, reduce air conditioning unit's energy consumption, make its system energy-efficient, and also be a protection to condenser and evaporimeter, prevent to erode for a long time and cause the destruction.
(2) The utility model relates to a data center is with indirect evaporative cooling air conditioning unit, the change can be dismantled to the indirect evaporative cooling heat transfer core in the indirect evaporative cooling section, can change according to operating condition's needs like plate-fin type, horizontal pipe and vertical pipe to be suitable for more actual engineering, make the application range of unit more extensive, more nimble.
(3) The utility model relates to a data center is with indirect evaporative cooling air conditioning unit, humidification device adopt the mode of high-pressure spraying humidification, have avoided the delay and the secondary pollution of wet membrane humidification, have compared in the better accurate control of wet membrane humidification to set up the breakwater, prevented that the drop of water from getting into the data processing computer lab, cause the destruction to the server.
(4) The utility model relates to a data center is with indirect evaporative cooling air conditioning unit utilizes indirect evaporative cooling principle, does not have the mixing with the ambient air when guaranteeing computer lab humiture scope, has ensured the requirement of computer lab to the air quality to furthest utilizes the refrigerated mode of nature cold source to reduce the operating duration of traditional mechanical refrigeration air conditioner, not only economy but also environmental protection.
(5) The utility model relates to a data center is with indirect evaporative cooling air conditioning unit can carry out the mode switch according to the meteorological parameter of reality, makes it can both operate with energy-conserving operating mode throughout the year, has reduced air conditioning unit's energy consumption, has reached data center energy saving and emission reduction's purpose.
Drawings
Fig. 1 is a schematic structural diagram of an indirect evaporative cooling air conditioning unit for a data center.
In the figure, 1, a primary air inlet, 2, an air filter a, 3, an indirect evaporative cooling heat exchange core, 4, a water distributor, 5, a water baffle a, 6, a condenser, 7, an electric air valve a, 8, a secondary air exhaust fan, 9, a secondary air exhaust outlet, 10, an expansion valve, 11, an evaporator, 12, an electric air valve b, 13, a high-pressure spray water distributor, 14, a water baffle b, 15, a primary air blower, 16, a primary air supply outlet, 17, a control unit, 18, a water collecting tank a, 19, a water pipe a, 20, a water pump a, 21, a compressor, 22, a refrigerant pipe, 23, a water pump b, 24, a water pipe b, 25, a water collecting tank b, 26, an air filter b, 27 and a secondary air inlet are arranged.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The utility model relates to an indirect evaporative cooling air conditioning unit for a data center, as shown in figure 1, which comprises a unit shell, wherein two opposite side walls of the unit shell are respectively provided with a primary air inlet 1 and a primary air supply outlet 16, and the unit shell is internally provided with an air filter a2, an indirect evaporative cooling section, an evaporator combined unit, a humidifying section, a water baffle b14 and a primary air blower 15 in sequence according to the flowing direction after primary air enters; a secondary air outlet 9 is arranged on the unit shell corresponding to the top of the indirect evaporative cooling section, and secondary air inlets 27 are arranged on two side walls of the unit shell corresponding to two opposite side surfaces of the indirect evaporative cooling section; a secondary air exhaust fan 8 is arranged at the secondary air exhaust outlet 9, and a condenser combination unit is arranged between the secondary air exhaust fan 8 and the indirect evaporative cooling section; the condenser combination unit, the expansion valve 10, the evaporator combination unit and the compressor 21 are connected in sequence through a refrigerant pipe 22 to form a circulating closed loop; a control unit 17 is arranged below the primary air blower 15, and the control unit 17 is respectively connected with the indirect evaporative cooling section, the evaporator combined unit, the humidifying section, the condenser combined unit, the secondary air exhaust fan 8 and the primary air blower 15.
The secondary air inlet 27 is provided with an air filter b 26.
The indirect evaporative cooling section comprises a water baffle a5, a water distributor 4, an indirect evaporative cooling heat exchange core body 3 and a water collecting tank b25 which are sequentially arranged from top to bottom, and the water distributor 4 is connected with the water collecting tank b25 through a water pipe b 24; the secondary air inlet 27 is positioned on the corresponding side wall of the unit shell between the indirect evaporative cooling heat exchange core body 3 and the water collecting tank b 25; the water pipe b24 is provided with a water pump b23, and the water pump b23 is connected with the control unit 17.
The indirect evaporative cooling heat exchange core body 3 is composed of one of a plate-fin circular tube, a horizontal circular tube or a vertical circular tube, and can be replaced according to the requirement of actual working conditions; the indoor primary air passes through the dry channel, the outdoor secondary air passes through the wet channel, and heat exchange is carried out through the indirect evaporative cooling heat exchange core body 3;
the evaporator combined unit comprises two evaporators 11 which are arranged in a V shape and are connected in parallel, an electric air valve b12 is arranged between the two evaporators 11, and the electric air valve b12 is used for controlling primary air passing through the evaporators 11; the condenser combination unit comprises two condensers 6 which are arranged in a V shape and are connected in parallel, an electric air valve a7 is arranged between the two condensers 6, the electric air valve a7 is used for controlling secondary air passing through the condensers 6, and the condensers 6 are in an air cooling mode; the two condensers 6, the compressors 21, the two evaporators 11 and the expansion valves 10 which are connected in parallel are connected in turn through the refrigerant pipes 22 to form a closed circulation loop; the electric air valve b12 and the electric air valve a7 are connected to the control unit 17.
The two condensers 6 and the evaporator 11 are respectively connected in parallel, and when one of the condensers breaks down, the safe and reliable operation of the unit can be ensured; the air valves a7 and b12 of the condenser section and the evaporator section are electric and can be opened or closed according to the switching of the operation modes;
the humidifying section comprises a high-pressure spraying water distributor 13 vertically arranged in the unit shell, the nozzle direction of the high-pressure spraying water distributor 13 faces a water baffle b14, a water collecting tank a18 is arranged below the high-pressure spraying water distributor 13, the high-pressure spraying water distributor 13 is connected with a water collecting tank a18 through a water pipe a19, a water pump a20 is further arranged on the water pipe a19, and the water pump a20 is connected with a control unit 17.
The secondary air exhaust fan 8 is an axial flow fan.
The primary air blower 15 is a centrifugal fan.
The utility model relates to a data center is with indirect evaporative cooling air conditioning unit, the working process specifically as follows:
according to the working process of primary air in a data processing machine room: indoor return air is purified and filtered from a primary air inlet 1 through an air filter a2 and then flows through a dry channel of an indirect evaporative cooling heat exchange core body 3, the indoor return air transfers heat to secondary air on the side of a wet channel, the primary air of the indoor return air is cooled and cooled, and then secondary cooling is carried out through an evaporator 11, finally humidification is carried out at a humidification section, power is provided by a primary air blower 15, finally, the primary air which is cooled and humidified is sent into a data processing machine room from a primary air supply outlet 16, and the primary air circulates like this, so that the cooling effect of the data processing machine room is achieved.
According to the working process of outdoor secondary air: outdoor air is purified and filtered through an air filter b26 through a secondary air inlet 27, flows to a wet channel of the indirect evaporative cooling heat exchange core body 3 to exchange heat, is cooled by power provided by a secondary air exhaust fan 8, and finally carries heat secondary air to be exhausted from a secondary air exhaust outlet 9, so that the energy efficiency of the unit is greatly improved.
According to the working process of the water distribution system: the water distribution system of the indirect evaporative cooling section comprises a water pump b23, a water collecting tank b25 and a water distributor 4, the water distributor 4 is arranged at the upper part of the indirect evaporative cooling heat exchange core body 3, and water in the water collecting tank b25 is conveyed to the water distributor 4 through a pipeline b24 to be distributed by power provided by the water pump b 23; the water distribution system of the humidifying section comprises a high-pressure spray water distributor 13, a water pump a20 and a water collecting tank a18 which are connected with each other through a pipeline a19 in sequence, the water pump a20 provides power to convey water in the water collecting tank a18 to the high-pressure spray water distributor 13, primary air of return air of a data processing machine room is humidified, and the humidifying section is opened according to the humidity requirement.
The utility model relates to a data center has three kinds of mode with indirect evaporative cooling air conditioning unit, and the working process specifically as follows:
(1) dry mode: in winter, when the external environment temperature is lower, the unit operates in a dry mode. At the moment, the spray evaporation system and the mechanical refrigeration system are not operated, and the electric air valve a7 and the electric air valve b12 are all opened. The outdoor low-temperature air enters from the secondary air inlet 27 of the unit and enters the wet channel of the indirect evaporative cooling heat exchange core body 3 for heat exchange, and at the moment, the electric air valve a7 is opened, does not pass through the condenser 6 and is directly discharged to the outdoor through the secondary air exhaust fan 8; the return air with higher temperature in the data processing machine room firstly enters the unit through the primary air inlet 1, is filtered by the air filter a2, flows through the indirect evaporative cooling heat exchange core body 3 dry channel and is directly cooled by outdoor low-temperature air, and then the electric air valve b12 is opened, does not pass through the evaporator 11 and is directly sent into the data processing machine room through the primary air blower 15 and the primary air supply outlet 16.
(2) Wet mode: in the transition season, when the external environment temperature is relatively mild, the unit operates in a wet mode. At this time, the spray evaporation system is operated, the mechanical refrigeration system is still not operated, and the electric air valve a7 and the electric air valve b12 are all opened. The water distributor 4 of the spraying evaporation system sprays circulating water to the indirect evaporation cooling heat exchange core 3, outdoor low-temperature air enters from a secondary air inlet 27 of the unit, is filtered by an air filter b26 and enters a wet channel of the indirect evaporation cooling heat exchange core 3 for heat exchange, at the moment, an electric air valve a7 is opened, and the outdoor secondary air is directly exhausted to the outdoor through a secondary air exhaust fan 8 without passing through a condenser 6; the return air with higher temperature in the data processing machine room firstly enters the unit through the primary air inlet 1, is filtered by the air filter a2, flows through the dry channel of the indirect evaporative cooling heat exchange core body 3 and is subjected to equal humidity cooling, and at the moment, the electric air valve b12 is opened, does not pass through the evaporator 11, and is directly sent into the data processing machine room through the primary air supply opening 16 by the primary air blower 15. According to the humidity requirement of the data center, the high-pressure spray water distributor 13 is opened adjustably to humidify the data processing machine room.
(3) Mixed mode: in hot summer, when the outdoor temperature is high and the wet bulb temperature is also high, the unit operates in a mixed mode. At the moment, the spraying evaporation system and the mechanical refrigeration system run simultaneously, and the electric air valve a7 and the electric air valve b12 are fully closed to jointly achieve the required refrigeration capacity. The water distributor 4 of the spraying evaporation system sprays circulating water to the indirect evaporation cooling heat exchange core 3, outdoor low-temperature air enters from a secondary air inlet 27 of the unit, is filtered by an air filter b26 and enters a wet channel of the indirect evaporation cooling heat exchange core 3 for heat exchange, at the moment, an electric air valve a7 is closed, the outdoor secondary air after heat exchange absorbs condensation heat through a condenser 6, and is finally discharged to the outside through a secondary air exhaust fan 8; the return air with higher temperature in the data processing machine room firstly enters the machine set through the primary air inlet 1, is filtered by the air filter a2, flows through the dry channel of the indirect evaporative cooling heat exchange core body 3 and is cooled by constant humidity, at the moment, the electric air valve b12 is closed, the cooled primary air is cooled by the evaporator 11, and finally the primary air blower 15 sends the cooled primary air into the data processing machine room through the primary air supply outlet 16 to cool the server, so that the requirements of the temperature and the humidity of the data processing machine room are met, and circulation is formed.

Claims (8)

1. An indirect evaporative cooling air conditioning unit for a data center is characterized by comprising a unit shell, wherein a primary air inlet (1) and a primary air supply outlet (16) are respectively arranged on two opposite side walls of the unit shell, and an air filter a (2), an indirect evaporative cooling section, an evaporator combined unit, a humidifying section, a water baffle b (14) and a primary air blower (15) are sequentially arranged in the unit shell according to the flowing direction of primary air after entering; a secondary air outlet (9) is arranged on the unit shell corresponding to the top of the indirect evaporative cooling section, and secondary air inlets (27) are arranged on two side walls of the unit shell corresponding to two opposite side surfaces of the indirect evaporative cooling section; a secondary air exhaust fan (8) is arranged at the secondary air exhaust outlet (9), and a condenser combination unit is arranged between the secondary air exhaust fan (8) and the indirect evaporative cooling section; the condenser combined unit, the expansion valve (10), the evaporator combined unit and the compressor (21) are sequentially connected through a refrigerant pipe (22) to form a circulating closed loop; a control unit (17) is arranged below the primary air blower (15), and the control unit (17) is respectively connected with the indirect evaporative cooling section, the evaporator combined unit, the humidifying section, the condenser combined unit, the secondary air exhaust fan (8) and the primary air blower (15).
2. The indirect evaporative cooling air conditioning unit for data centers as set forth in claim 1, wherein an air filter b (26) is provided at said secondary air inlet (27).
3. The indirect evaporative cooling air conditioning unit for the data center according to claim 1, wherein the indirect evaporative cooling section comprises a water baffle a (5), a water distributor (4), an indirect evaporative cooling heat exchange core (3) and a water collecting tank b (25) which are arranged from top to bottom in sequence, and the water distributor (4) is connected with the water collecting tank b (25) through a water pipe b (24); the secondary air inlet (27) is positioned on the corresponding side wall of the unit shell between the indirect evaporative cooling heat exchange core body (3) and the water collecting tank b (25); and a water pump b (23) is arranged on the water pipe b (24), and the water pump b (23) is connected with the control unit (17).
4. The indirect evaporative cooling air conditioning unit for the data center according to claim 3, wherein the indirect evaporative cooling heat exchange core (3) is composed of one of a plate-fin round tube, a horizontal round tube or a vertical round tube.
5. The indirect evaporative cooling air conditioning unit for the data center according to claim 1, wherein the evaporator combination unit comprises two evaporators (11) which are arranged in a V shape and are connected in parallel, and an electric air valve b (12) is arranged between the two evaporators (11); the condenser combination unit comprises two condensers (6) which are arranged in a V shape and are connected in parallel, an electric air valve a (7) is arranged between the two condensers (6), and the two condensers (6) which are connected in parallel, a compressor (21), two evaporators (11) which are connected in parallel and an expansion valve (10) are sequentially connected through a refrigerant pipe (22) to form a closed circulation loop; the electric air valve b (12) and the electric air valve a (7) are respectively connected with a control unit (17).
6. The indirect evaporative cooling air conditioning unit for the data center according to claim 1, wherein the humidification section comprises a high-pressure spray water distributor (13) vertically arranged in a unit housing, a nozzle of the high-pressure spray water distributor (13) faces a water baffle b (14), a water collection tank a (18) is arranged below the high-pressure spray water distributor (13), the high-pressure spray water distributor (13) is connected with the water collection tank a (18) through a water pipe a (19), a water pump a (20) is further arranged on the water pipe a (19), and the water pump a (20) is connected with the control unit (17).
7. The indirect evaporative cooling air conditioning unit for data centers as set forth in claim 1, wherein said secondary air blower (8) is an axial fan.
8. An indirect evaporative cooling air conditioning unit for a data center as set forth in claim 1 wherein the primary air blower (15) is a centrifugal fan.
CN202020293354.0U 2020-03-11 2020-03-11 Indirect evaporative cooling air conditioning unit for data center Expired - Fee Related CN211792609U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202020293354.0U CN211792609U (en) 2020-03-11 2020-03-11 Indirect evaporative cooling air conditioning unit for data center

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202020293354.0U CN211792609U (en) 2020-03-11 2020-03-11 Indirect evaporative cooling air conditioning unit for data center

Publications (1)

Publication Number Publication Date
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114183863A (en) * 2022-02-14 2022-03-15 江苏优珂汽车配件有限公司 Air conditioning equipment capable of indirectly exchanging heat core body

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114183863A (en) * 2022-02-14 2022-03-15 江苏优珂汽车配件有限公司 Air conditioning equipment capable of indirectly exchanging heat core body

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