CN219146038U - Composite multi-connected air conditioning system - Google Patents
Composite multi-connected air conditioning system Download PDFInfo
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- CN219146038U CN219146038U CN202223574147.0U CN202223574147U CN219146038U CN 219146038 U CN219146038 U CN 219146038U CN 202223574147 U CN202223574147 U CN 202223574147U CN 219146038 U CN219146038 U CN 219146038U
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Abstract
The application discloses compound multi-connected air conditioning system relates to air conditioning equipment technical field, including evaporation refrigeration module and compression refrigeration module, evaporation refrigeration module has first evaporation unit, and compression refrigeration module forms heat transfer with first evaporation unit through the gas divides stock solution unit and is connected, and the gas divides stock solution unit to include holding chamber and air suction channel, and the gaseous refrigerant that first evaporation unit refrigeration formed gets into compression refrigeration module through air suction channel and condenses into liquid refrigerant and get into the holding chamber after, is carried to the first evaporation unit in realizing refrigeration. According to the composite multi-connected air conditioning system, the compression refrigeration module is directly connected with the first evaporation unit through the gas separation liquid storage unit in a heat exchange mode, and gaseous refrigerant entering the gas separation liquid storage unit is directly sucked into the compression refrigeration module to be condensed, so that intermediate heat transfer can be reduced, the heat exchange efficiency is higher, and the refrigeration requirement of a data center can be better met.
Description
Technical Field
The application relates to the technical field of air conditioning equipment, in particular to a compound multi-connected air conditioning system.
Background
As is well known, the data center provides great convenience for the development of the modern society, and the power consumption of the data center is high. In order to reduce the energy consumption of the data center, social resources are reasonably configured, and the data center PUE (Power Usage Effectiveness is abbreviated as an index for evaluating the energy efficiency of the data center, which is the ratio of all energy consumed by the data center to the energy consumed by IT load) needs to be optimized. In the prior art, in order to realize the reduction of the PUE of the data center, the most direct and effective mode is to reduce the energy consumption of an air conditioning system of the data center, for example, fully utilize a natural cold source for cooling. However, in the process of implementing the present application, the inventor finds that at least the following problems exist in the prior art: the current air conditioning system often exchanges heat through the multi-pipeline heat exchanger, and because the multi-pipeline heat exchanger adopts a plurality of independent heat exchange pipelines, its heat exchange efficiency is lower, can not better satisfy data center's refrigeration demand. Therefore, it is necessary for those skilled in the art to provide a composite multi-connected air conditioning system with higher heat exchange efficiency.
Disclosure of Invention
The purpose of the application is to provide a compound multi-connected air conditioning system, which can provide an efficient heat exchange channel so as to meet the refrigeration requirement of a data center.
To achieve the above object, the present application provides a composite multi-connected air conditioning system, including:
an evaporation refrigeration module having a first evaporation unit;
the compression refrigeration module is in heat exchange connection with the first evaporation unit through the gas separation liquid storage unit so as to cool gaseous refrigerant formed by refrigerating the first evaporation unit, the gas separation liquid storage unit comprises a containing cavity and an air suction channel connected with the containing cavity, and the gaseous refrigerant formed by refrigerating the first evaporation unit enters the compression refrigeration module through the air suction channel to be condensed into liquid refrigerant and enters the containing cavity and then is conveyed into the first evaporation unit to realize refrigeration.
In some embodiments, the suction channel is a U-shaped conduit, the air inlet of the U-shaped conduit being located above the liquid level in the receiving chamber.
In some embodiments, a compression refrigeration module includes:
the air suction port of the compressor is connected with the air suction channel;
the inlet of the condenser is connected with the exhaust port of the compressor, and the outlet of the condenser is connected with the liquid inlet of the accommodating cavity;
the inlet of the expansion valve is connected with the outlet of the condenser, and the outlet of the expansion valve is connected with the liquid inlet of the accommodating cavity.
In some embodiments, further comprising a heat pipe module, the heat pipe module comprising:
the inlet of the first pump is connected with the liquid supply port of the accommodating cavity, and the outlet of the first pump is connected with the inlet of the first evaporation unit;
a heat pipe valve, an inlet of which is connected with an outlet of the first evaporation unit;
and the inlet of the cooling coil is connected with the outlet of the heat pipe valve, and the outlet of the cooling coil is connected with the air inlet of the air separation liquid storage unit.
In some embodiments, the heat pipe module further comprises a refrigeration valve, an inlet of the refrigeration valve is connected to an outlet of the first evaporation unit, and an outlet of the refrigeration valve is connected to an air inlet of the gas-dividing and liquid-storing unit.
In some embodiments, the refrigeration system further comprises a cold water refrigeration module, the evaporation refrigeration module is further provided with a second evaporation unit, and the cold water refrigeration module is in heat exchange connection with the second evaporation unit through the multi-channel heat exchanger so as to cool the refrigerant flowing through the multi-channel heat exchanger, so that the cooled refrigerant enters the second evaporation unit to realize refrigeration.
In some embodiments, a cold water refrigeration module includes:
the inlet of the water pump is connected with the cold water channel outlet of the multi-channel heat exchanger;
and the inlet of the cold water unit is connected with the outlet of the water pump, and the outlet of the cold water unit is connected with the cold water channel inlet of the multi-channel heat exchanger.
In some embodiments, the cold water chilling module further comprises:
the cold accumulation unit is connected between the outlet of the cold water unit and the cold water channel of the multi-channel heat exchanger;
the cold accumulation valve is connected between the outlet of the cold water unit and the cold water channel of the multi-channel heat exchanger, so that the multi-channel heat exchanger is cooled through the cold water unit when the cold accumulation valve is opened, and the multi-channel heat exchanger is cooled through the cold accumulation unit when the cold accumulation valve is closed.
In some embodiments, further comprising a refrigerant circuit, the refrigerant circuit comprising:
the inlet of the liquid storage device is connected with the refrigerant channel outlet of the multichannel heat exchanger;
the inlet of the second pump is connected with the outlet of the liquid storage device, and the outlet of the second pump is connected with the inlet of the second evaporation unit;
in the refrigerant circuit, the outlet of the second evaporation unit is connected with the refrigerant channel inlet of the multi-channel heat exchanger.
In some embodiments, the number of evaporative refrigeration modules is one or more, and the first evaporative unit is a coil evaporator; and/or the number of the compression refrigeration modules is one or more, and a plurality of the compression refrigeration modules are connected in parallel.
Compared with the background art, the compound multi-connected air conditioning system provided by the embodiment of the application comprises an evaporation refrigeration module and a compression refrigeration module, wherein the evaporation refrigeration module is provided with a first evaporation unit, and the first evaporation unit is used as the tail end of the air conditioning system and used for refrigerating a data center; the compression refrigeration module is in heat exchange connection with the first evaporation unit through the gas-separation liquid storage unit so as to cool gaseous refrigerant formed by refrigeration of the first evaporation unit, and specifically, the gas-separation liquid storage unit comprises a containing cavity and an air suction channel connected with the containing cavity, and the gaseous refrigerant formed by refrigeration of the first evaporation unit enters the compression refrigeration module through the air suction channel to be condensed into liquid refrigerant and enters the containing cavity, and then is conveyed into the first evaporation unit to realize refrigeration.
Compared with the traditional setting mode of adopting the multichannel heat exchanger, the compound multi-connected air conditioning system provided by the embodiment of the application has the advantages that the compression refrigeration module is directly connected with the first evaporation unit through the gas-separation liquid storage unit to form heat exchange, and gaseous refrigerant entering the gas-separation liquid storage unit is directly sucked into the compression refrigeration module to be condensed, so that the intermediate heat transfer can be reduced, the heat exchange efficiency is higher, and the refrigeration requirement of a data center can be better met.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present application, and that other drawings may be obtained according to the provided drawings without inventive effort to a person skilled in the art.
Fig. 1 is a schematic connection diagram of a composite multi-air conditioning system according to an embodiment of the present application.
Wherein:
10-an evaporation refrigeration module, 101-a first evaporation unit and 102-a second evaporation unit;
a 20-compression refrigeration module, 201-compressor, 202-condenser, 203-expansion valve;
30-gas-separating liquid storage unit, 301-air suction channel, 302-holding cavity;
40-cold water refrigerating module, 401-water pump, 402-cold water unit, 403-cold storage unit, 404-cold storage valve;
a 50-multichannel heat exchanger, 501-cold water channels, 502-refrigerant channels;
60-heat pipe module, 601-first pump, 602-heat pipe valve, 603-cooling coil, 604-refrigeration valve;
70-refrigerant circuit, 701-accumulator, 702-second pump.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
In order to better understand the aspects of the present application, a further detailed description of the present application will be provided below with reference to the accompanying drawings and detailed description.
Referring to fig. 1, fig. 1 is a schematic connection diagram of a composite multi-connected air conditioning system according to an embodiment of the present application.
As shown in fig. 1, the compound multi-connected air conditioning system provided in the embodiment of the present application includes an evaporation refrigeration module 10 and a compression refrigeration module 20, where the evaporation refrigeration module 10 has a first evaporation unit 101, and the first evaporation unit 101 is used as an end of the air conditioning system for refrigerating a data center; the compression refrigeration module 20 is in heat exchange connection with the first evaporation unit 101 through the gas separation liquid storage unit 30 to cool the gaseous refrigerant formed by refrigerating the first evaporation unit 101, specifically, the gas separation liquid storage unit 30 includes a containing cavity 302 and an air suction channel 301 connected with the containing cavity 302, the gaseous refrigerant formed by refrigerating the first evaporation unit 101 enters the compression refrigeration module 20 through the air suction channel 301 to be condensed into liquid refrigerant and enters the containing cavity 302, and then is conveyed into the first evaporation unit 101 to realize refrigeration.
The suction channel 301 of the gas-separating and liquid-storing unit 30 is also referred to as an evaporation channel, and the suction port of the suction channel 301 is disposed in the accommodating cavity 302 and is located above the liquid level in the accommodating cavity 302, and the suction channel 301 is used for connecting with the air inlet of the compressor 201 of the compression refrigeration module 20 to suck the gaseous refrigerant into the compression refrigeration module 20 to realize compression condensation.
In this way, when the outdoor temperature reaches above 25 ℃, the cold energy is transferred to the gaseous refrigerant formed by the refrigeration of the first evaporation unit 101 through the compression refrigeration module 20, so that the gaseous refrigerant is condensed into liquid refrigerant, specifically, the gaseous refrigerant enters the compression refrigeration module 20 through the suction channel 301 to be condensed into liquid refrigerant and enters the accommodating cavity 302, and then is transferred to the first evaporation unit 101 to realize refrigeration; when the outdoor temperature is between 10 ℃ and 25 ℃, the compression refrigeration module 20 runs under partial load, and when the heat pipe module 60 where the first evaporation unit 101 is positioned is insufficient in refrigeration, the compression refrigeration module 20 is used for properly compensating the cold, specifically, the gaseous refrigerant which is not fully condensed enters the compression refrigeration module 20 through the suction channel 301 to be condensed into liquid refrigerant and enters the accommodating cavity 302, and is further conveyed into the first evaporation unit 101 to realize refrigeration.
Compared with the traditional arrangement mode of adopting the multichannel heat exchanger, the compound multi-connected air conditioning system provided by the embodiment of the application has the advantages that the compression refrigeration module 20 is directly connected with the first evaporation unit 101 through the air separation liquid storage unit 30 to form heat exchange connection, the gaseous refrigerant entering the air separation liquid storage unit 30 is directly sucked into the compression refrigeration module 20 to be condensed, the middle heat transfer can be reduced, the heat exchange efficiency is higher, the refrigeration requirement of a data center under multiple working conditions can be met, and the low-PUE and high-reliability operation of the data center can be realized.
In some embodiments, the suction channel 301 is a U-shaped tube, and the air inlet of the U-shaped tube is located above the liquid level in the accommodating cavity 302, and the air suction port is connected to the air inlet of the compressor 201 of the compression refrigeration module 20, so as to suck the air-state refrigerant into the compression refrigeration module 20 to realize compression condensation.
In some embodiments, the compression refrigeration module 20 includes a compressor 201, a condenser 202, and an expansion valve 203.
The air suction channel 301 of the air-separating and storing unit 30 is connected to an air suction port of the compressor 201, an air discharge port of the compressor 201 is connected to an inlet of the condenser 202, an outlet of the condenser 202 is connected to an inlet of the expansion valve 203, and an outlet of the expansion valve 203 is connected to an inlet of the accommodating cavity 302 of the air-separating and storing unit 30.
In this way, the gaseous refrigerant is sucked by the compressor 201 and condensed in the condenser 202, throttled by the expansion valve 203, re-enters the accommodating chamber 302 of the gas-separating and storing unit 30 through the liquid inlet, and then the liquid refrigerant is again conveyed to the first evaporating unit 101 for refrigeration, thereby realizing heat dissipation.
In some embodiments, the number of compression refrigeration modules 20 is one or more, and a plurality of compression refrigeration modules 20 are connected in parallel.
In some embodiments, the composite multi-air conditioning system further comprises a heat pipe module 60, wherein the heat pipe module 60 comprises a first evaporation unit 101, a gas-separation liquid storage unit 30, a first pump 601, a heat pipe valve 602 and a cooling coil 603, wherein a liquid supply port of the accommodating cavity 302 of the gas-separation liquid storage unit 30 is connected with an inlet of the first pump 601, an outlet of the first pump 601 is connected with an inlet of the first evaporation unit 101, an outlet of the first evaporation unit 101 is connected with an inlet of the heat pipe valve 602, an outlet of the heat pipe valve 602 is connected with an inlet of the cooling coil 603, and an outlet of the cooling coil 603 is connected with an air inlet of the gas-separation liquid storage unit 30.
Further, the heat pipe module 60 further includes a refrigeration valve 604, wherein an inlet of the refrigeration valve 604 is connected to an outlet of the first evaporation unit 101, and an outlet of the refrigeration valve 604 is connected to an air inlet of the gas-dividing and liquid-storing unit 30.
That is, the outlet of the first evaporation unit 101 is connected to the inlet of the heat pipe valve 602 and the inlet of the refrigerant valve 604, respectively. Wherein both heat pipe valve 602 and refrigeration valve 604 may be provided as solenoid valves.
In this way, the compression refrigeration module 20 and the heat pipe module 60 are combined by the air separation liquid storage unit 30 to form a heat dissipation connection, and the two solenoid valves of the heat pipe valve 602 and the refrigeration valve 604 respectively operate in a refrigeration mode, a heat pipe mode and a combined mode.
In some embodiments, the composite multi-air conditioning system further includes an external fan disposed toward the cooling coil 603 to increase the condensing efficiency of the cooling coil 603.
It should be noted that, the rest parts except the first evaporation unit 101 in the compression refrigeration module 20, the air separation liquid storage unit 30 and the heat pipe module 60 may form a multi-connected host, and the multi-connected host may be independently operated to improve the refrigeration efficiency, and when the multi-connected host fails, the cold water refrigeration module 40 may be also used to improve the refrigeration efficiency.
In some embodiments, the evaporative cooling module 10 also has a second evaporation unit 102, the second evaporation unit 102 and the first evaporation unit 101 being the ends of the air conditioning system for cooling the data center.
In addition, the composite multi-connected air conditioning system further comprises a cold water refrigerating module 40, and the cold water refrigerating module 40 is in heat exchange connection with the second evaporation unit 102 through the multi-channel heat exchanger 50 so as to cool the refrigerant flowing through the multi-channel heat exchanger 50, so that the cooled refrigerant enters the second evaporation unit 102 to realize refrigeration.
Further, the cold water channel 501 of the multi-channel heat exchanger 50 and the cold water refrigeration module 40 form a cold water loop, the cold water refrigeration module 40 comprises a water pump 401, a cold water unit 402 (also called a cold water host), a cold storage unit 403 and a cold storage valve 404, wherein an inlet of the water pump 401 is connected with an outlet of the multi-channel heat exchanger 50, an inlet of the cold water unit 402 is connected with an outlet of the water pump 401, an outlet of the cold water unit 402 is connected with an inlet of the cold water channel 501 of the multi-channel heat exchanger 50, the cold storage unit 403 is connected between the outlet of the cold water unit 402 and the cold water channel 501 of the multi-channel heat exchanger 50, and the cold storage valve 404 is connected between the outlet of the cold water unit 402 and the cold water channel 501 of the multi-channel heat exchanger 50, so that when the cold storage valve 404 is opened, the cold storage unit 402 supplies cold to the multi-channel heat exchanger 50, and when the cold storage valve 404 is closed.
It should be noted that the multi-channel heat exchanger 50 is also called a water-fluorine conversion heat exchanger, and has a refrigerant channel 502 and a cold water channel 501, wherein cold energy of the cold water channel 501 can be transferred to the refrigerant channel 502, so that the refrigerant in the refrigerant channel 502 is condensed after being cooled, and the refrigerant channel 502 and the second evaporation unit 102 form the refrigerant circuit 70.
It can be appreciated that the composite multi-connected air conditioning system provided in the embodiment of the present application may realize heat exchange by switching between the compression refrigeration module 20 and the cold water refrigeration module 40 to the evaporation refrigeration module 10:
when the outdoor temperature reaches above 25 ℃, the cold energy is transmitted to the gaseous refrigerant formed by the first evaporation unit 101 through the compression refrigeration module 20 to condense the gaseous refrigerant into liquid refrigerant, specifically, the gaseous refrigerant enters the compression refrigeration module 20 through the suction channel 301 to be condensed into liquid refrigerant and enters the accommodating cavity 302, and then is transmitted to the first evaporation unit 101 to realize refrigeration;
when the outdoor temperature is between 10 ℃ and 25 ℃, the compression refrigeration module 20 runs under partial load, and when the heat pipe module 60 where the first evaporation unit 101 is positioned is insufficient in refrigeration, the compression refrigeration module 20 is used for properly compensating the cold, specifically, the gaseous refrigerant which is not fully condensed enters the compression refrigeration module 20 through the air suction channel 301 to be condensed into liquid refrigerant and enters the accommodating cavity 302, and is further conveyed into the first evaporation unit 101 to realize refrigeration;
when the compression refrigeration module 20 fails, cold water is provided by the cold water refrigeration module 40 and the cold energy is transferred to the refrigerant flowing through the multi-channel heat exchanger 50 to cool (condense) the refrigerant and allow the cooled refrigerant to enter the second evaporation unit 102 for further refrigeration, during which time the failed module may be serviced.
Under normal working conditions, the cold water unit 402 is opened, the cold storage valve 404 is closed, and cold energy is continuously conveyed to the cold storage unit 403, so that the cold storage unit 403 stores enough cold energy;
when the cold water unit 402 fails, the cold storage valve 404 is closed, the cold storage unit 403 is utilized to continuously supply cold to the multi-channel heat exchanger 50, the safe and reliable operation of the data center is ensured, and when the cold storage unit 403 is configured to be large enough, the energy-saving operation of the air conditioning system can be realized through the peak shifting and storage regulating function.
The compound multi-connected air conditioning system arranged in this way has the following beneficial effects:
firstly, the compression refrigeration module 20 and the cold water refrigeration module 40 are switched to the evaporation refrigeration module 10 for heat exchange, so that different refrigeration modes can be switched according to refrigeration requirements, meanwhile, continuous high-efficiency energy-saving refrigeration in multiple modes can be realized, energy is greatly saved, low PUE is realized, the refrigeration requirements of a data center under multiple seasons and multiple working conditions can be met, and the low PUE and high-reliability operation of the data center can be realized.
Secondly, the compression refrigeration module 20 is directly connected with the first evaporation unit 101 through the gas-separation liquid storage unit 30 in a heat exchange mode, and gaseous refrigerant entering the gas-separation liquid storage unit 30 is directly sucked into the compression refrigeration module 20 to be condensed, so that the system is simpler, the cost is lower, the intermediate heat transfer can be reduced, and the efficiency is higher.
Thirdly, a cold accumulation unit 403 is arranged in the cold water refrigerating module 40, namely, the cold accumulation unit 403 is fused with the cold water unit 402, when the cold water unit 402 fails, cold supply is continued through the cold accumulation unit 403, and the running safety and reliability of the data center are ensured.
In some embodiments, the compound multi-air conditioning system further comprises a refrigerant circuit 70, the refrigerant circuit 70 comprising the second evaporation unit 102, the refrigerant channels 502 of the multi-channel heat exchanger 50, the accumulator 701, and the second pump 702, wherein an outlet of the refrigerant channels 502 of the multi-channel heat exchanger 50 is connected to an inlet of the accumulator 701, an outlet of the accumulator 701 is connected to an inlet of the second pump 702, an outlet of the second pump 702 is connected to an inlet of the second evaporation unit 102, and an outlet of the second evaporation unit 102 is connected to an inlet of the refrigerant channels 502 of the multi-channel heat exchanger 50.
Of course, the first pump 601 and the second pump 702 are preferably fluorine pumps according to actual needs. The end of the air conditioning system can be oilless by adopting the fluorine pump for driving.
In some embodiments, the number of the evaporation refrigeration modules 10 is one or more, and the first evaporation unit 101 and the second evaporation unit 102 are coil evaporators.
Preferably, as shown in fig. 1, the number of the evaporation refrigeration modules 10 may be two, forming a multi-connected structure.
In summary, the compound multi-connected air conditioning system provided by the embodiment of the application can operate a refrigeration mode, a compound mode and a heat pipe mode according to outdoor temperature or indoor load, and also can operate a cold water refrigeration module 40+a fluorine pump heat pipe mode under the fault of a multi-connected host. Wherein, under the refrigeration mode: the refrigeration valve 604 is opened, the heat pipe valve 602 is closed, the heat pipe module 60 is provided with cold energy through the compression refrigeration module 20, and the heat pipe module 60 conveys the cold energy to the first evaporation unit 101 for refrigerating the data center; the composite mode is as follows: the heat pipe valve 602 is opened, the refrigeration valve 604 is closed, and the refrigerant (or refrigerant) coming out of the first evaporation unit 101 is preferentially cooled in the cooling coil 603, and the defect is compensated by opening the compression refrigeration module 20; the heat pipe mode is as follows: the heat pipe valve 602 is open and the refrigeration valve 604 is closed, completely relying on the cooling coil 603 to cool the data center. When the multi-connected host fails, in order to ensure uninterrupted refrigeration of the data center, the cold water refrigeration module 40 is started, cold water is provided by the cold water unit 402 to condense gaseous refrigerant in the water-fluorine conversion heat exchanger, and the condensed refrigerant is conveyed to the second evaporation unit 102 under the power action of the second pump 702, so that continuous refrigeration of the data center is maintained.
Meanwhile, under normal working conditions, the cold water unit 402 is opened, the cold storage valve 404 is closed, and cold energy is continuously conveyed to the cold storage unit 403, so that the cold storage unit 403 stores enough cold energy.
In this way, when the multi-connected main unit fails, in order to ensure uninterrupted cooling of the data center, the cold water unit 402 is turned on, the cold storage valve 404 is turned on, cold water is provided by the cold water unit 402 to condense the gaseous refrigerant in the multi-channel heat exchanger 50, and the liquid refrigerant is delivered to the second evaporation unit 102 by the power action of the second pump 702, so as to maintain continuous cooling of the data center.
When the cold water unit 402 fails, the cold storage valve 404 is closed, and the cold storage unit 403 is utilized to continuously supply cold to the multi-channel heat exchanger 50, so that the safety and reliability of the data center are ensured.
When the configuration of the cold accumulation unit 403 is sufficiently large, energy-saving operation can also be realized by the peak shifting and regulating function.
More specifically:
1. when the outdoor temperature is higher than 25 ℃, the multi-unit host operates in a cooling mode, at this time, the compressor 201 operates, the compression cooling module 20 transfers the cooling capacity to the refrigerant in the heat pipe module 60, that is, the refrigerant in the first evaporation unit 101 completes the cooling in the data center, becomes the superheated gaseous refrigerant, and enters the accommodating cavity 302 of the gas-separation liquid storage unit 30 through the cooling valve 604, the gaseous refrigerant is sucked by the compressor 201 and condensed in the condenser 202, throttled by the expansion valve 203, and enters the accommodating cavity 302 of the gas-separation liquid storage unit 30 again through the liquid inlet, wherein the liquid refrigerant is conveyed to the first evaporation unit 101 again by the first pump 601 for cooling, thereby realizing heat dissipation.
When the compound multi-unit host fails, at this time, the multi-unit host is closed, the cold water unit 402 is opened, the cold storage valve 404 is opened, the cold water unit 402 can provide 15 ℃ cold water into the cold water channel 501 of the multi-channel heat exchanger 50, the refrigerant flowing through the refrigerant channel 502 of the multi-channel heat exchanger 50 is condensed, and the condensed refrigerant is conveyed to the second evaporation unit 102 through the second pump 702 for continuous refrigeration, and during this time, the compound multi-unit host can be maintained.
When the cold water unit 402 fails, the cold storage valve 404 is closed, the cold storage unit 403 is utilized to continuously supply cold to the multi-channel heat exchanger 50, the safe and reliable operation of the data center is ensured, and when the cold storage unit 403 is configured to be large enough, the energy-saving operation of the air conditioning system can be realized through the peak shifting and storage regulating function.
2. When the outdoor temperature is between 10 ℃ and 25 ℃, the multi-connected host machine operates in a compound mode, at the moment, the compressor 201 operates under partial load, the heat pipe module 60 operates under full load, the refrigerant in the first evaporation unit 101 completes refrigeration in the data center and becomes overheated gaseous refrigerant, the overheated gaseous refrigerant enters the cooling coil 603 for heat dissipation and condensation through the heat pipe valve 602, then the deficiency is properly compensated through the compression refrigeration module 20, namely, the refrigerant which is not completely condensed and cooled and comes out of the cooling coil 603 enters the accommodating cavity 302 of the gas-division liquid storage unit 30 again, the gaseous refrigerant is sucked by the compressor 201 and condensed in the condenser 202, is throttled by the expansion valve 203, and enters the accommodating cavity 302 of the gas-division liquid storage unit 30 again through the liquid inlet, and the liquid refrigerant in the accommodating cavity 302 is conveyed to the first evaporation unit 101 again for refrigeration by the first pump 601, so that heat dissipation is realized.
When the compound multi-unit host fails, at this time, the multi-unit host is closed, the cold water unit 402 is opened, the cold storage valve 404 is opened, the cold water unit 402 can provide 15 ℃ cold water into the cold water channel 501 of the multi-channel heat exchanger 50, the refrigerant flowing through the refrigerant channel 502 of the multi-channel heat exchanger 50 is condensed, and the condensed refrigerant is conveyed to the second evaporation unit 102 through the second pump 702 for continuous refrigeration, and during this time, the compound multi-unit host can be maintained.
When the cold water unit 402 fails, the cold storage valve 404 is closed, the cold storage unit 403 is utilized to continuously supply cold to the multi-channel heat exchanger 50, the safe and reliable operation of the data center is ensured, and when the cold storage unit 403 is configured to be large enough, the energy-saving operation of the air conditioning system can be realized through the peak shifting and storage regulating function.
3. When the outdoor temperature is lower than 10 ℃, the multi-connected host operates in a heat pipe mode, at the moment, the compressor 201 is closed, the heat pipe module 60 operates, the refrigerant in the first evaporation unit 101 completes refrigeration in the data center and becomes overheated gaseous refrigerant, the overheated gaseous refrigerant enters the cooling coil 603 through the heat pipe valve 602 to dissipate heat and condense, the condensation reaches the aim by controlling the heat exchange capacity of the external fan, the liquid refrigerant enters the gas-separation liquid storage unit 30, and the liquid refrigerant is conveyed to the first evaporation unit 101 again by the first pump 601 to perform refrigeration, so that heat dissipation is realized.
When the compound multi-unit host fails, at this time, the multi-unit host is closed, the cold water unit 402 is opened, the cold storage valve 404 is opened, the cold water unit 402 can provide 15 ℃ cold water into the cold water channel 501 of the multi-channel heat exchanger 50, the refrigerant flowing through the refrigerant channel 502 of the multi-channel heat exchanger 50 is condensed, and the condensed refrigerant is conveyed to the second evaporation unit 102 through the second pump 702 for continuous refrigeration, and during this time, the compound multi-unit host can be maintained.
When the cold water unit 402 fails, the cold storage valve 404 is closed, the cold storage unit 403 is utilized to continuously supply cold to the multi-channel heat exchanger 50, the safe and reliable operation of the data center is ensured, and when the cold storage unit 403 is configured to be large enough, the energy-saving operation of the air conditioning system can be realized through the peak shifting and storage regulating function.
In this way, in the composite multi-connected air conditioning system provided by the embodiment of the application, the fluorine pump multi-connected heat pipe and the compression refrigeration technology are integrated, and the refrigeration mode, the composite mode and the heat pipe mode can be switched according to the outdoor temperature respectively, so that energy is saved greatly, and the low PUE is realized; meanwhile, the cold water refrigerating module 40+fluorine pump power multi-connected heat pipe is used as a refrigerating backup to be fused inside the evaporation refrigerating module 10 (evaporator) of the tail end backboard (between columns), when the multi-connected host computer fails, the multi-connected host computer is immediately switched to the cold water refrigerating module 40 to operate, so that continuous refrigeration of the data center is ensured, the multi-connected host computer can be maintained on line, high-efficiency energy-saving operation of the unit is realized, and uninterrupted refrigeration is realized.
Further, the compression refrigeration module 20 and the heat pipe module 60 are directly integrated through the air separation liquid storage unit 30, so that the system is simpler, the cost is lower, the intermediate heat transfer can be reduced, and the efficiency is higher.
In addition, a cold storage unit 403 is arranged in the cold water refrigerating module 40, namely, the cold storage unit 403 is fused with the cold water unit 402, so that when the cold water unit 402 fails, cold supply is continued through the cold storage unit 403, and the running safety and reliability of the data center are ensured.
It should be noted that in this specification relational terms such as first and second are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
The composite multi-connected air conditioning system provided by the application is described in detail above. Specific examples are employed herein to illustrate the principles and embodiments of the present application, and the above examples are provided only to assist in understanding the aspects of the present application and their core ideas. It should be noted that it would be obvious to those skilled in the art that various improvements and modifications can be made to the present application without departing from the principles of the present application, and such improvements and modifications fall within the scope of the claims of the present application.
Claims (10)
1. A composite multi-air conditioning system, comprising:
an evaporation refrigeration module (10), the evaporation refrigeration module (10) having a first evaporation unit (101);
the compression refrigeration module (20), compression refrigeration module (20) form heat transfer through gas divide liquid storage unit (30) with first evaporation unit (101) and connect, in order to right gaseous refrigerant that first evaporation unit (101) refrigerate and form cools down, gas divide liquid storage unit (30) include holding chamber (302) and with holding chamber (302) continuous suction channel (301), gaseous refrigerant that first evaporation unit (101) refrigerate and form get into compression refrigeration module (20) are through suction channel (301) are condensed into liquid refrigerant and get into behind holding chamber (302), are carried to in first evaporation unit (101) realize the refrigeration.
2. The compound multi-air conditioning system according to claim 1, characterized in that the suction channel (301) is a U-shaped duct, the air inlet of which is located above the liquid level in the accommodation chamber (302).
3. The compound multi-air conditioning system according to claim 1, wherein the compression refrigeration module (20) comprises:
a compressor (201), wherein an air suction port of the compressor (201) is connected with the air suction channel (301);
the inlet of the condenser (202) is connected with the exhaust port of the compressor (201), and the outlet of the condenser (202) is connected with the liquid inlet of the accommodating cavity (302);
the inlet of the expansion valve (203) is connected with the outlet of the condenser (202), and the outlet of the expansion valve (203) is connected with the liquid inlet of the accommodating cavity (302).
4. The composite multi-air conditioning system of claim 1, further comprising a heat pipe module (60), the heat pipe module (60) comprising:
a first pump (601), wherein an inlet of the first pump (601) is connected with a liquid supply port of the accommodating cavity (302), and an outlet of the first pump (601) is connected with an inlet of the first evaporation unit (101);
-a heat pipe valve (602), an inlet of the heat pipe valve (602) being connected to an outlet of the first evaporation unit (101);
and the inlet of the cooling coil (603) is connected with the outlet of the heat pipe valve (602), and the outlet of the cooling coil (603) is connected with the air inlet of the gas separation liquid storage unit (30).
5. The composite multi-air conditioning system according to claim 4, wherein the heat pipe module (60) further comprises a refrigeration valve (604), an inlet of the refrigeration valve (604) is connected to an outlet of the first evaporation unit (101), and an outlet of the refrigeration valve (604) is connected to an air inlet of the gas-separation liquid-storage unit (30).
6. The multiple air conditioning system according to any of claims 1 to 5, further comprising a cold water refrigeration module (40), wherein the evaporation refrigeration module (10) further has a second evaporation unit (102), and the cold water refrigeration module (40) is in heat exchange connection with the second evaporation unit (102) through a multi-channel heat exchanger (50) to cool the refrigerant flowing through the multi-channel heat exchanger (50), so that the cooled refrigerant enters the second evaporation unit (102) to realize refrigeration.
7. The compound multi-air conditioning system as set forth in claim 6, wherein the cold water chilling module (40) includes:
a water pump (401), wherein an inlet of the water pump (401) is connected with an outlet of a cold water channel (501) of the multi-channel heat exchanger (50);
the inlet of the cold water unit (402) is connected with the outlet of the water pump (401), and the outlet of the cold water unit (402) is connected with the inlet of the cold water channel (501) of the multi-channel heat exchanger (50).
8. The compound multi-air conditioning system as set forth in claim 7, wherein the cold water chilling module (40) further includes:
a cold storage unit (403), the cold storage unit (403) being connected between an outlet of the cold water unit (402) and a cold water channel (501) of the multi-channel heat exchanger (50);
a cold accumulation valve (404), wherein the cold accumulation valve (404) is connected between an outlet of the cold water unit (402) and a cold water channel (501) of the multi-channel heat exchanger (50) so as to realize cooling of the multi-channel heat exchanger (50) through the cold water unit (402) when the cold accumulation valve (404) is opened and cooling of the multi-channel heat exchanger (50) through the cold accumulation unit (403) when the cold accumulation valve (404) is closed.
9. The compound multi-air conditioning system as set forth in claim 6, further comprising a refrigerant circuit (70), said refrigerant circuit (70) comprising:
-an accumulator (701), an inlet of the accumulator (701) being connected to an outlet of a refrigerant channel (502) of the multi-channel heat exchanger (50);
-a second pump (702), an inlet of the second pump (702) being connected to an outlet of the reservoir (701), an outlet of the second pump (702) being connected to an inlet of the second evaporation unit (102);
in the refrigerant circuit (70), an outlet of the second evaporation unit (102) is connected to an inlet of a refrigerant channel (502) of the multi-channel heat exchanger (50).
10. The compound multi-air conditioning system according to claim 1, wherein the number of the evaporation refrigeration modules (10) is one or more, and the first evaporation unit (101) is a coil evaporator; and/or the number of the compression refrigeration modules (20) is one or more, and a plurality of the compression refrigeration modules (20) are connected in parallel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202223574147.0U CN219146038U (en) | 2022-12-30 | 2022-12-30 | Composite multi-connected air conditioning system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223574147.0U CN219146038U (en) | 2022-12-30 | 2022-12-30 | Composite multi-connected air conditioning system |
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| CN219146038U true CN219146038U (en) | 2023-06-06 |
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| CN202223574147.0U Active CN219146038U (en) | 2022-12-30 | 2022-12-30 | Composite multi-connected air conditioning system |
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