CN113864932A - Air conditioner cooling system - Google Patents
Air conditioner cooling system Download PDFInfo
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- CN113864932A CN113864932A CN202111308388.8A CN202111308388A CN113864932A CN 113864932 A CN113864932 A CN 113864932A CN 202111308388 A CN202111308388 A CN 202111308388A CN 113864932 A CN113864932 A CN 113864932A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/0035—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using evaporation
Abstract
The application discloses air conditioner cooling system, this air conditioner cooling system includes indirect evaporative cooling device and liquid cooling device, indirect evaporative cooling device includes indirect heat transfer unit, spray assembly, air supply fan and exhaust fan, indirect heat transfer unit has independent and cross arrangement's primary air passageway and overgrate air passageway, be used for making indoor hot-air and outdoor cold air carry out the heat exchange, spray assembly is used for spraying the coolant liquid to indirect heat transfer unit, air supply fan is used for carrying the indoor cold air after the heat exchange to the computer lab in, the exhaust fan is used for the outdoor hot-air discharge after the heat exchange outdoor, the heat dissipation branch of liquid cooling device is located on primary air passageway, be used for carrying out the heat exchange with outdoor air in order to obtain the cooling medium. This application is through liquid cooling device cooling liquid cooling server, carries out the constant humidity cooling treatment through indirect evaporative cooling device to the computer lab environment, and entire system efficiency is high, and the structure is fairly simple, and is with low costs, and adaptability is wide.
Description
Technical Field
The application relates to the technical field of machine room air conditioner cooling, in particular to an air conditioner cooling system combining a liquid cooling device and an indirect evaporative cooling device.
Background
At present, for the heat dissipation and cooling of the server, not only an indirect evaporation cooling unit or a liquid cooling device can be independently adopted for cooling, but also the indirect evaporation cooling unit and the liquid cooling device can be combined for cooling. However, the existing scheme of cooling the server cabinet by combining the liquid cooling device with different cooling systems is complex, large in occupied space and high in cost.
For example, an existing air-conditioning cooling system for a data center based on the combination of liquid cooling and evaporative cooling technologies adopts an indirect evaporative cooling unit to cool air inside a machine room on one hand, and directly provides cooling water through an evaporative cooler to cool a server on the other hand, and the indirect evaporative cooling unit and the server are independent, large in occupied space and high in cost.
Disclosure of Invention
In order to overcome the problems in the prior art, the present application mainly aims to provide an air conditioning cooling system with simple structure, small occupied space and low cost.
In order to achieve the above purpose, the following technical solutions are specifically adopted in the present application:
the application provides an air conditioner cooling system, this air conditioner cooling system include indirect evaporative cooling device and liquid cooling device, indirect evaporative cooling device includes:
the indirect heat exchange unit is provided with a primary air channel and a secondary air channel which are independent and crossed, and is used for carrying out heat exchange on indoor hot air and outdoor cold air;
the spraying assembly is used for spraying cooling liquid to the indirect heat exchange unit;
the air supply fan is arranged on the secondary air channel and used for conveying the heat-exchanged indoor cold air into the machine room;
the exhaust fan is arranged on the primary air channel and used for exhausting the outdoor hot air after heat exchange to the outside;
the heat dissipation part of the liquid cooling device is arranged on the primary air channel and used for exchanging heat with outdoor air to obtain cooling working media, and the cooling working media are used for providing cold sources for the liquid cooling server.
In a particular embodiment, the indirect evaporative cooling apparatus further comprises an evaporative heat exchanger and a condensing heat exchanger;
the condensation heat exchanger is arranged at the air outlet of the primary air channel, and the evaporation heat exchanger is arranged at the air outlet of the secondary air channel.
In a specific implementation mode, the spraying assembly comprises a water collecting tank, a spraying part and a first circulating pump, the spraying part is arranged above the indirect heat exchange unit and used for spraying cooling liquid to the primary air channel, the water collecting tank is arranged below the indirect heat exchange unit and connected to the spraying part through a pipeline, and the first circulating pump is arranged on the pipeline.
In a specific embodiment, the spraying assembly further comprises a first filter, and the first filter is arranged on the pipeline at the liquid outlet end of the first circulating pump.
In a specific embodiment, the spray assembly further comprises a first valve, and the first valve is arranged on the pipeline at the liquid inlet end of the spray part.
In a specific embodiment, the liquid cooling device includes a CDU cooling module and the heat dissipation portion, the CDU cooling module is configured to cool the liquid cooling server, the heat dissipation portion is configured as the spray component, and the water collection tank is connected to the spray component via the CDU cooling module.
In a specific implementation manner, the pipelines include a first pipeline, a second pipeline and a third pipeline, the water collection tank is connected to the inlet of the CDU cooling module through the first pipeline, the outlet of the CDU cooling module is connected to the spray component through the second pipeline, two ends of the third pipeline are respectively connected to the first pipeline and the second pipeline, and the first circulation pump is disposed on the first pipeline between the water collection tank and the third pipeline.
In a specific embodiment, the spray assembly further comprises a second filter disposed in the third conduit.
In a specific implementation manner, the spray assembly further includes a second valve and a third valve, the second valve is disposed on the first pipeline between the inlet of the CDU cooling module and the third pipeline, and is configured to control on/off of the inlet pipeline of the CDU cooling module, and the third valve is disposed on the third pipeline, and is configured to control on/off of the third pipeline.
In a specific embodiment, the spraying part is arranged above the indirect heat exchange unit, and the water collecting tank is arranged below the indirect heat exchange unit;
the liquid cooling device comprises a CDU (refrigeration cycle unit) cooling module, a filler unit, a water collecting device, a second circulating pump and the heat radiating part, wherein the heat radiating part is arranged as an injection device, the filler unit and the indirect heat exchange unit are arranged side by side, the injection device is arranged above the filler unit, the water collecting device is arranged below the filler unit, the water collecting device is connected with the inlet of the CDU cooling module through a pipeline, the outlet of the CDU cooling module is connected with the injection device through a pipeline, and the second circulating pump is arranged on the pipeline between the inlet of the water collecting device and the inlet of the CDU cooling module.
In a specific embodiment, the liquid cooling apparatus further includes a fourth valve, and the fourth valve is disposed on the pipeline at the liquid inlet end of the injection device.
In a specific embodiment, the liquid cooling device further includes a third filter, and the third filter is disposed on the pipe at the liquid outlet end of the second circulation pump.
In a specific implementation mode, the liquid cooling device comprises a CDU cooling module, a third circulating pump and the heat dissipation part, the heat dissipation part is set as a dry cooling heat exchanger, the dry cooling heat exchanger is arranged at the outlet of a primary air channel of the indirect heat exchange unit, the outlet of the dry cooling heat exchanger is connected to the inlet of the CDU cooling module through a pipeline, the outlet of the CDU cooling module is connected to the inlet of the dry cooling heat exchanger through a pipeline, and the third circulating pump is arranged on the pipeline between the dry cooling heat exchanger and the CDU cooling module.
In a specific embodiment, the liquid cooling apparatus further includes a fourth filter, and the fourth filter is disposed on the pipeline of the CDU cooling module inlet.
Compared with the prior art, the air conditioner cooling system comprises an indirect evaporation cooling device and a liquid cooling device, wherein the indirect evaporation cooling device comprises an indirect heat exchange unit, a spraying assembly, an air supply fan and an exhaust fan, the indirect heat exchange unit is provided with a primary air channel and a secondary air channel which are independently and alternately arranged and used for enabling indoor hot air and outdoor cold air to exchange heat, the spraying assembly is used for spraying cooling liquid to the indirect heat exchange unit, the air supply fan is arranged on the secondary air channel and used for conveying the indoor cold air after heat exchange into a machine room so as to perform constant-humidity cooling treatment on the environment of the machine room, the exhaust fan is arranged on the primary air channel and used for exhausting the outdoor hot air after heat exchange out of the machine room, the heat dissipation of the liquid cooling device is distributed on the primary air channel and used for exchanging heat with the outdoor air to obtain a cooling working medium which is used for providing a cold source for a liquid cooling server, this application is located the cooling part of liquid cooling device on primary air passageway to acquire cooling working medium and be used for CDU cooling module, and then cooling liquid cooling server, and indirect evaporative cooling device is used for carrying out the constant humidity cooling to the computer lab environment and handles, and entire system efficiency is high, and the structure is fairly simple, and is with low costs, and adaptability is wide.
Drawings
Fig. 1 is a schematic structural diagram of an air conditioning cooling system according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of an air-conditioning cooling system according to another embodiment of the present application.
Fig. 3 is another perspective view of the air-conditioning cooling system in fig. 2.
Fig. 4 is a schematic structural diagram of an air-conditioning cooling system according to yet another embodiment of the present application.
The attached drawings are as follows:
1. an indirect heat exchange unit; 2. an evaporative heat exchanger; 3. a condensing heat exchanger; 4. an air supply fan; 5. an exhaust fan; 6. a spray assembly; 61. a water collection tank; 62. a spray component; 63. a first circulation pump; 64. a first filter; 65. a second filter; 66. a first valve; 67. a second valve; 68. a third valve; 601. a first pipeline; 602. a second pipeline; 603. a third pipeline; 7. a liquid cooling device; 71. a CDU cooling module; 72. a filler unit; 73. a water collection device; 74. an injection device; 75. a second circulation pump; 76. a fourth valve; 77. a third filter; 78. a dry-cold heat exchanger; 79. a third circulation pump; 70. a fourth filter; 100. an indirect evaporative cooling device; 200. liquid cooling server rack.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In the description of the present application, unless explicitly stated or limited otherwise, the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless specified or indicated otherwise; the terms "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, integrally connected, or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In the description of the present application, it should be understood that the terms "upper" and "lower" used in the description of the embodiments of the present application are used in a descriptive sense only and not for purposes of limitation. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element via an intermediate element.
The cooling system combining the existing liquid cooling device and the evaporative cooling technology or the system combining other air conditioning systems and the liquid cooling device generally has the following problems:
1. the liquid cooling device and the evaporative cooling are actually mutually independent, and the system is not simple enough, so that the whole medium system is complex, large in occupied space and high in cost.
2. The existing heat pipe air conditioner or direct evaporative condenser and a water cooling tower need to be assembled on site, the occupied area is large, and the construction cost is high.
3. Adopt direct evaporative condenser, directly spray or spray on the heat exchanger surface, scale deposit and corruption easily, influence heat transfer performance after the scale deposit on the one hand, on the other hand corrodes not only shortening equipment life, in case reveal, the unable guarantee of computer lab security, promptly, security and poor stability.
4. The water consumption rate is high, the water floating rate of the existing cooling tower liquid cooling device is high, the concentration rate of a direct evaporation cooler is required to be low, otherwise, the cooler is easy to scale and corrode.
5. The maintenance rate is high, the condenser is directly evaporated, and the high-pressure spraying is easy to block, the maintenance frequency is high, and the failure rate is high.
6. The requirement on water quality is high, and the water is directly sprayed or sprayed on an evaporative cooler and is easy to scale and corrode.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an air-conditioning cooling system according to an embodiment of the present application. This air conditioner cooling system includes indirect evaporative cooling device and liquid cooling device, and indirect evaporative cooling device 100 includes indirect heat transfer unit 1, air supply fan 4, exhaust fan 5 and spray set 6, and indirect heat transfer unit 1 has independent and cross arrangement's primary air passageway and secondary air passageway for make indoor hot-air and outdoor cold air carry out the heat exchange, and spray set 6 is used for spraying the coolant liquid to indirect heat transfer unit 1. The air supply fan 4 is arranged on a secondary air channel of the indirect heat exchange unit 1 and used for conveying indoor cold air subjected to heat exchange to the machine room so as to perform constant-humidity cooling treatment on the machine room environment. The exhaust fan 5 is disposed on the primary air channel of the indirect heat exchange unit 1, and is configured to exhaust the outdoor hot air after heat exchange to the outside. The heat dissipation part of the liquid cooling device 7 is arranged on the primary air channel of the indirect heat exchange unit 1 and is used for exchanging heat with outdoor air to obtain a cooling working medium, and the cooling working medium is used for providing a cold source for the liquid cooling server in the liquid cooling server cabinet 200.
In this embodiment, the air supply fan 4 is disposed at the air outlet of the secondary air channel of the indirect heat exchange unit 1, and the exhaust fan 5 is disposed at the air outlet of the primary air channel of the indirect heat exchange unit 1. It is understood that in other embodiments, the air supply fan 4 may be disposed in the air inlet or the secondary air channel of the indirect heat exchange unit 1, and the air exhaust fan 5 may be disposed in the air inlet or the primary air channel of the indirect heat exchange unit 1.
Specifically, the indirect evaporative cooling device 100 further includes an evaporative heat exchanger 2 and a condensing heat exchanger 3, an air inlet of the primary air channel is located at the bottom of the indirect heat exchange unit 1, an air outlet of the primary air channel is located at the top of the indirect heat exchange unit 1, and an air inlet and an air outlet of the secondary air channel are located at two opposite side portions of the indirect heat exchange unit 1, respectively. The evaporating heat exchanger 2 is arranged at an air outlet of the secondary air channel, and the air supply fan 4 is connected to an air outlet end of the evaporating heat exchanger 2. The condensation heat exchanger 3 is arranged at an air outlet of the primary air channel, and the exhaust fan 5 is connected to an air outlet end of the condensation heat exchanger 3.
During heat exchange, outdoor cold air flows into the primary air channel from the air inlet of the primary air channel, indoor hot air flows into the secondary air channel from the air inlet of the secondary air channel, so that the outdoor cold air and the indoor hot air exchange heat in the indirect heat exchange unit 1, the temperature of the indoor hot air is reduced, and the temperature of the outdoor cold air is increased. When the outdoor cold air and the indoor hot air carry out the in-process of heat exchange in indirect heat transfer unit 1, spray assembly 6 still is used for spraying the coolant to indirect heat transfer unit 1 to carry out the humidification cooling to outdoor air continuously, make indoor hot air temperature reduction after the heat transfer, for the computer lab provides cold air, reduce computer lab air temperature. If the temperature of the indoor air after the initial heat exchange of the indirect heat exchange unit 1 still does not meet the temperature requirement of the machine room, the indoor air after the initial heat exchange of the indirect heat exchange unit 1 enters the evaporation heat exchanger 2, the outdoor air after the initial heat exchange of the indirect heat exchange unit 1 enters the condensation heat exchanger 3, the outdoor air exchanges heat with the heat exchange working medium in the condensation heat exchanger 3, the temperature of the outdoor air is further increased and is discharged outdoors by the exhaust fan 5, the temperature of the heat exchange working medium is reduced and is in the evaporation heat exchanger 2, the indoor air exchanges heat with the heat exchange working medium, the temperature of the heat exchange working medium is increased, the temperature of the indoor air is further reduced, the temperature of the indoor air meets the requirement of the machine room, and the indoor air is conveyed into the machine room by the air supply fan 4.
The spraying component 6 comprises a water collecting tank 61, a spraying part 62 and a first circulating pump 63, wherein the spraying part 62 is arranged above the indirect heat exchange unit 1 and positioned between the indirect heat exchange unit 1 and the condensing heat exchanger 3 and is used for spraying cooling liquid to the primary air channel. The water collection tank 61 is provided below the indirect heat exchange unit 1, and the coolant sprayed by the spray member 62 can be collected by the water collection tank 61. The water collection tank 61 is connected to the shower unit 62 through a pipe, and the first circulation pump 63 is provided on the pipe.
Further, the liquid cooling device 7 includes a CDU cooling module 71 and a heat dissipation portion, the CDU cooling module 71 is used for cooling the liquid cooling servers in the liquid cooling server cabinet 200, and the heat dissipation portion is the spraying component 62, that is, the heat dissipation portion of the liquid cooling device 7 shares the spraying component 62. The header tank 61 is connected to the shower part 62 via the CDU cooling module 71. The CDU is a liquid cooling distribution device, and equipment such as a water pump, a constant pressure tank and a heat exchanger are integrated in the CDU, so that on one hand, power is provided for liquid to circulate in a system, and on the other hand, heat of a liquid cooling server is conveyed to an outdoor environment through the heat exchanger in a heat exchange mode.
In this embodiment, a part of the cooling liquid of the indirect evaporative cooling device is directly used for heat exchange with the CDU cooling module 71 to prepare the cooling medium with the required temperature, and the cooling medium is sent to the liquid cooling server cabinet 200 to cool the liquid cooling server. Most coolant liquid mixes with the return water behind the CDU cooling module 71 heat transfer simultaneously, evenly spray on indirect heat exchange unit 1, spray the liquid on indirect heat exchange unit 1 through outdoor cold air cooling, in order to obtain the cooling working medium and be used for CDU cooling module, and carry out the heat exchange through making outdoor cold air and indoor hot-air, carry out primary cooling to indoor hot-air, indoor air carries out the secondary cooling through evaporating heat exchanger 2 again, obtain required indoor cooling air, provide the cold air for the computer lab. The air conditioner cooling system can provide a cold source for the liquid cooling server cabinet, can cool the air environment inside the machine room, and is high in energy efficiency, compact in structure, low in cost and wide in adaptability.
Further, the spray assembly 6 further comprises a first pipe 601, a second pipe 602, a third pipe 603, a first filter 64, a second filter 65, a first valve 66, a second valve 67 and a third valve 68. The water collecting tank 61 is connected to an inlet of the CDU cooling module 71 through a first pipeline 601, an outlet of the CDU cooling module 71 is connected to the spray part 62 through a second pipeline 602, and both ends of a third pipeline 603 are connected to the first pipeline 601 and the second pipeline 602, respectively. The first circulating pump 63 is arranged on a first pipeline 601 between the water collecting tank 61 and the third pipeline 603, and the first valve 66 is arranged on a pipeline at the liquid inlet end of the spraying part 62 and is used for controlling the on-off of the pipeline at the liquid inlet end of the spraying part 62. The second valve 67 is disposed on the first pipeline 601 between the inlet of the CDU cooling module 71 and the third pipeline 603, and is used for controlling on/off of the inlet pipeline of the CDU cooling module 71. A third valve 68 is disposed in the third pipeline 603 for controlling the opening and closing of the third pipeline 603. The first filter 64 is disposed on the pipe at the liquid outlet end of the first circulating pump 63, and is used for filtering the cooling water flowing out of the first circulating pump 63. The second filter 65 is provided to the third line 603, and filters the coolant flowing through the third line 603.
In specific implementation, after the low-temperature coolant in the water collection tank 61 passes through the first circulating pump 63, a part of the low-temperature coolant passes through the first valve 66 and is filtered by the first filter 64, and then flows into the CDU cooling module 71 for indirect heat exchange. The high-temperature cooling liquid after heat exchange flows out from the CDU cooling module 71 and is mixed with most of the low-temperature cooling liquid flowing through the third valve 68 and the second filter 65 to form medium-temperature cooling liquid. After flowing through the first valve 66, the medium temperature coolant is uniformly sprayed on the indirect heat exchange unit 1 through the spraying part 62, and is directly evaporated and cooled with outdoor air to obtain low temperature coolant, and the low temperature coolant is collected in the water collection tank 61 again. And meanwhile, the humidified and cooled outdoor air and the indoor hot air exchange heat indirectly to obtain primary cooling indoor air. If the primary cooling indoor air does not meet the designed air supply working condition, the primary cooling indoor air further exchanges heat with the evaporative heat exchanger 2 to obtain cooled air under the designed working condition, and the cooled air is sent into the machine room through the air supply fan 4. The secondary outdoor air after the heat exchange of the indirect heat exchange unit 1 continuously exchanges heat with the condensing heat exchanger 3 to provide a liquid refrigerant for evaporating and absorbing heat for the evaporating heat exchanger 2. The high temperature outdoor air after heat exchange is exhausted to the outside through the exhaust fan 5, thereby circulating. The air conditioner cooling system of indirect evaporative cooling device combination liquid cooling device 7 of this application can enough provide the cold source for liquid cooling server rack 200, can carry out the constant humidity cooling to the inside air circumstance of computer lab again and handle. When the liquid cooling device 7 breaks down, the second valve 67 is closed, and the third valve 68 is completely opened, so that the low-temperature cooling liquid is fully sprayed onto the indirect heat exchange unit 1, the influence of the high-temperature cooling water and the low-temperature cooling water of part of the liquid cooling on the indirect heat exchange unit 1 caused by the rising of the water temperature is eliminated, and the purpose of increasing the indirect evaporative cooling heat exchange capacity can be realized.
In the existing liquid cooling device 7, the temperature of the supplied water is about 40 ℃, the temperature of the returned water is about 45 ℃, and the temperature of the cooling water flowing through the indirect heat exchange unit 1 is close to the temperature of the local wet bulb, so that the low-temperature cooling liquid flowing through the indirect heat exchange unit 1 can be directly utilized to cool the liquid cooling server through the CDU cooling module 71.
The air conditioner cooling system of the embodiment omits a direct evaporation heat exchanger, a cooling fan and a circulating pump of the liquid cooling device 7, and has the advantages of simple and compact structure, low water consumption, good energy efficiency and wide adaptability.
Based on the above embodiment, the present application further discloses another specific implementation manner, and the present embodiment is different from the above embodiment in that, referring to fig. 2 and fig. 3, in the present embodiment, the spraying assembly 6 includes a water collecting tank 61, a spraying part 62, a first circulating pump 63, a first filter 64, and a first valve 66. The spray part 62 is disposed above the indirect heat exchange unit 1, the water collection tank 61 is disposed below the indirect heat exchange unit 1, and the water collection tank 61 is connected to the spray part 62 through a pipeline. The first circulation pump 63 is provided on a pipe between the water collection tank 61 and the shower part 62. The first valve 66 is arranged on the pipeline at the liquid inlet end of the spray component 62 and is used for controlling the on-off of the pipeline at the liquid inlet end of the spray component 62. The first filter 64 is disposed on the pipeline at the liquid outlet end of the first circulating pump 63, and is used for filtering the cooling water flowing out through the first circulating pump 63.
The liquid cooling apparatus 7 includes a CDU cooling module 71, a filler unit 72, a water collecting device 73, a second circulation pump 75, and a heat radiating portion, which is a spray device 74. The packing unit 72 is arranged side by side with the indirect heat exchange unit 1, the spraying device 74 is arranged above the packing unit 72, the water collecting device 73 is arranged below the packing unit 72, the water collecting device 73 is connected with the inlet of the CDU cooling module 71 through a pipeline, and the outlet of the CDU cooling module 71 is connected with the spraying device 74 through a pipeline. A second circulation pump 75 is provided on the line between the water collection device 73 and the outlet of the CDU cooling module 71. Further, the liquid cooling apparatus 7 further includes a fourth valve 76 and a third filter 77, wherein the fourth valve 76 is disposed on the liquid inlet end of the injection device 74 for controlling the on-off of the liquid inlet pipe of the injection device 74. The third filter 77 is disposed on the pipe at the liquid outlet end of the second circulation pump 75 for filtering the cooling liquid flowing out from the second circulation pump 75.
In specific implementation, the first valve 66 and the fourth valve 76 are opened, cooling high-temperature return water of the liquid cooling device 7 is uniformly sprayed on the filler unit 72 through the spraying device 74, is directly evaporated and cooled with outdoor air, and the obtained cooling liquid is stored in the water collecting device 73 and is sent to the CDU cooling module 71 through the second circulating pump 75 to indirectly exchange heat with the high-temperature liquid coolant, so that heat of the liquid cooling server is taken away. Meanwhile, the cooling liquid stored in the water collecting tank 61 is filtered by the first circulating pump 63 through the first filter 64, and is sent to the spraying part 62 to be uniformly sprayed on the indirect heat exchange unit 1, so as to humidify and cool the outdoor air, and the humidified and cooled outdoor cold air is subjected to indirect heat exchange with the indoor hot air in the indirect heat exchange unit 1, so as to obtain primary indoor cooling air. If the primary indoor cooling air does not meet the designed air supply working condition, the primary indoor cooling air and the evaporative heat exchanger 2 exchange heat further to obtain the indoor cooling air under the designed working condition, and the indoor cooling air is sent into the machine room through the air supply fan 4. The secondary outdoor air after the heat exchange of the indirect heat exchange unit 1 continuously exchanges heat with the condensing heat exchanger 3 to provide a liquid refrigerant for evaporating and absorbing heat for the evaporating heat exchanger 2. The high-temperature outdoor air after heat exchange is exhausted to the outside through the outdoor exhaust fan 5. From this circulation, the air conditioner cooling system of this application combines to have indirect evaporative cooling device and liquid cooling device 7, both for liquid cooling server rack provides the source cooling, carries out cooling treatment to the inside air of computer lab again.
Because the temperature of the circulating cooling water of the liquid cooling device 7 is high, the circulating cooling water is mixed with the indirect evaporative cooling water and then directly sprayed on the indirect heat exchange unit 1, and the heat exchange performance of the indirect heat exchange unit 1 can be attenuated to a certain extent. The embodiment makes the recirculating cooling water system of the liquid cooling device 7 and the recirculating cooling water system of the indirect evaporative cooling device independent respectively, and shares the outdoor exhaust cooling system, the system structure is compact, the condition that the high-temperature cooling water after the heat exchange of the CDU cooling module 71 is mixed with the cooling water of the indirect evaporative cooling device is avoided, and the heat exchange efficiency of the indirect evaporative cooling device is improved. In a low-temperature area, the spraying system is independent, so that the spraying system of the indirect evaporative cooling device can be stopped, the anti-freezing risk in winter is low, and the adaptability is improved.
Based on the above embodiment, the present application further discloses another specific implementation manner, and as shown in fig. 4, the present embodiment is different from the above embodiment in that, in the present embodiment, the spraying assembly 6 includes a water collecting tank 61, a spraying part 62, a first circulating pump 63, a first filter 64, and a first valve 66. The spray part 62 is disposed above the indirect heat exchange unit 1, the water collection tank 61 is disposed below the indirect heat exchange unit 1, and the water collection tank 61 is connected to the spray part 62 through a pipeline. The first circulation pump 63 is provided on a pipe between the water collection tank 61 and the shower part 62. The first valve 66 is arranged on the pipeline at the liquid inlet end of the spray component 62 and is used for controlling the on-off of the pipeline at the liquid inlet end of the spray component 62. The first filter 64 is disposed on the pipeline at the liquid outlet end of the first circulating pump 63, and is used for filtering the cooling liquid flowing out through the first circulating pump 63.
The liquid cooling device 7 comprises a CDU cooling module 71, a third circulating pump 79 and a heat dissipation part, the heat dissipation part is a dry cooling heat exchanger 78, the dry cooling heat exchanger 78 is arranged at the outlet of a primary air channel of the indirect heat exchange unit 1, the outlet of the dry cooling heat exchanger 78 is connected to the inlet of the CDU cooling module 71 through a pipeline, the outlet of the CDU cooling module 71 is connected to the outlet of the dry cooling heat exchanger 78 through a pipeline, and the third circulating pump 79 is arranged on the pipeline between the dry cooling heat exchanger 78 and the CDU cooling module 71.
Further, the liquid cooling device 7 further includes a fourth filter 70, and the fourth filter 70 is disposed on the pipeline of the CDU cooling module 71 inlet and is used for filtering the cooling water flowing out from the third circulating pump 79.
In specific implementation, the first valve 66 is opened, a high-temperature heat exchange working medium (the heat exchange working medium can be freon, ethylene glycol, water and the like) in the liquid cooling device 7 flows into the dry-cold heat exchanger 78 to exchange heat with outdoor air, and a low-temperature heat exchange working medium obtained after heat exchange is sent to the CDU cooling module 71 to indirectly exchange heat with a high-temperature liquid coolant, so that heat of the liquid cooling server is taken away. Meanwhile, the coolant stored in the header tank 61 is filtered by the first circulation pump 63 through the first filter 64, and is supplied to the spray part 62 to be uniformly sprayed on the indirect heat exchange unit 1, thereby humidifying and cooling the outdoor air, and the humidified and cooled outdoor air is subjected to indirect heat exchange with the indoor air in the indirect heat exchange unit 1 to obtain primary indoor cooling air. If the primary indoor cooling air does not meet the designed air supply working condition, the primary indoor cooling air exchanges heat with the evaporative heat exchanger 2 and further to obtain the indoor cooling air under the designed working condition, and the indoor cooling air is sent into the machine room through the air supply fan 4. The secondary outdoor air after heat exchange in the indirect heat exchange unit 1 continuously exchanges heat with the condensing heat exchanger 3 to provide a liquid refrigerant for evaporation and heat absorption for the evaporation heat exchanger 2 or the dry cooling heat exchanger 78. The high-temperature outdoor air after heat exchange is exhausted to the outside through the outdoor exhaust fan 5.
In the embodiment, after the outdoor air is sprayed, humidified and cooled, the temperature of the secondary outdoor air is close to the local wet bulb temperature, while the cooling return water temperature of the conventional liquid cooling device 7 is about 45 ℃, and the water supply temperature is about 40 ℃. Therefore, the condensing heat exchanger 3 can be arranged above the indirect heat exchange unit 1, and meanwhile, the dry-cold heat exchanger 78 is also arranged, a cold source is provided for the liquid-cold server by the dry-cold heat exchanger 78, and the condition that the indirect evaporation heat exchange efficiency is reduced is avoided. Because this liquid cooling device 7 is the complete closed system, operation security and stability are higher. In low-temperature areas, after spraying is stopped in winter, outdoor dry air can be directly used for cooling, the anti-freezing risk is low, and the adaptability is wider.
The application has the following beneficial effects:
1. compared with the prior liquid cooling device combined with an evaporative cooling system, the liquid cooling device has the advantages that a precooling module and an air exhaust fan of the liquid cooling device are omitted, and a low-temperature side circulating pump of the liquid cooling device is adopted, so that the structure is more compact, and the integrated design is convenient.
2. Compared with the existing liquid cooling device combined with an evaporative cooling system, the liquid-liquid heat exchange unit or the phase change heat exchange unit is adopted, so that the efficiency is higher, the size is small, and the occupied space is small.
3. Compared with the existing liquid cooling device combined with an evaporative cooling system, the liquid cooling device has lower requirement on water quality and higher return water temperature, is directly used for spraying or spraying on a heat exchanger, and is easy to scale and corrode.
4. Compared with the existing liquid cooling device combined with an evaporative cooling system, the liquid cooling device has higher safety and stability.
5. Compare in current cooling tower cooling water cooling plant to and dry cooler spraying or spray liquid cooling device, save cooling tower, drainage fan, circulating pump, dry cooler to and the engineering is connected, reduce the construction cost greatly.
6. The water consumption is low, and compared with a cooling water cooling device of a water cooling tower, the water bleaching rate is low. Compared with a spray or spray liquid cooling device of a dry cooler and a heat exchanger in a closed flowing liquid, the heat exchanger is less prone to scaling, and circulating water with a larger concentration ratio can be used.
The above description is only for the preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (14)
1. The utility model provides an air conditioner cooling system which characterized in that, includes indirect evaporative cooling device and liquid cooling device, indirect evaporative cooling device includes:
the indirect heat exchange unit is provided with a primary air channel and a secondary air channel which are independent and crossed, and is used for carrying out heat exchange on indoor hot air and outdoor cold air;
the spraying assembly is used for spraying cooling liquid to the indirect heat exchange unit;
the air supply fan is arranged on the secondary air channel and used for conveying the heat-exchanged indoor cold air into the machine room;
the exhaust fan is arranged on the primary air channel and used for exhausting the outdoor hot air after heat exchange to the outside;
the heat dissipation part of the liquid cooling device is arranged on the primary air channel and used for exchanging heat with outdoor air to obtain cooling working media, and the cooling working media are used for providing cold sources for the liquid cooling server.
2. An air conditioning cooling system as set forth in claim 1 wherein said indirect evaporative cooling apparatus further comprises an evaporative heat exchanger and a condensing heat exchanger;
the condensation heat exchanger is arranged at the air outlet of the primary air channel, and the evaporation heat exchanger is arranged at the air outlet of the secondary air channel.
3. The air-conditioning cooling system according to claim 1, wherein the spray assembly includes a water collection tank, a spray part, and a first circulation pump, the spray part is disposed above the indirect heat exchange unit for spraying the cooling liquid to the primary air passage, the water collection tank is disposed below the indirect heat exchange unit, the water collection tank is connected to the spray part through a pipe, and the first circulation pump is disposed on the pipe.
4. The air conditioner cooling system of claim 3, wherein the spray assembly further comprises a first filter disposed on the pipe at the outlet end of the first circulation pump.
5. An air conditioner cooling system as set forth in claim 3 wherein said spray assembly includes a first valve disposed in said conduit at said spray inlet end.
6. An air-conditioning cooling system according to any one of claims 3 to 5, wherein the liquid cooling device comprises a CDU cooling module and the heat dissipation portion, the CDU cooling module is used for cooling the liquid cooling server, the heat dissipation portion is the spray component, and the water collection tank is connected to the spray component through the CDU cooling module.
7. An air-conditioning cooling system according to claim 6, wherein the pipeline comprises a first pipeline, a second pipeline and a third pipeline, the water collecting tank is connected to the inlet of the CDU cooling module through the first pipeline, the outlet of the CDU cooling module is connected to the spray part through the second pipeline, two ends of the third pipeline are respectively connected with the first pipeline and the second pipeline, and the first circulating pump is arranged on the first pipeline between the water collecting tank and the third pipeline.
8. An air conditioning cooling system as claimed in claim 7, wherein the spray assembly further comprises a second filter disposed in the third conduit.
9. An air conditioning cooling system according to claim 7, wherein the spray assembly further comprises a second valve and a third valve, the second valve is disposed on the first pipeline between the inlet of the CDU cooling module and the third pipeline for controlling the on/off of the CDU cooling module inlet pipeline, and the third valve is disposed on the third pipeline for controlling the on/off of the third pipeline.
10. An air conditioner cooling system according to any one of claims 3 to 5, wherein the spray part is arranged above the indirect heat exchange unit, and the water collection tank is arranged below the indirect heat exchange unit;
the liquid cooling device comprises a CDU (refrigeration cycle) cooling module, a filler unit, a water collecting device, a second circulating pump and a heat radiating part, wherein the heat radiating part is an injection device, the filler unit and the indirect heat exchange unit are arranged side by side, the injection device is arranged above the filler unit, the water collecting device is arranged below the filler unit, the water collecting device is connected with the inlet of the CDU cooling module through a pipeline, the outlet of the CDU cooling module is connected with the injection device through a pipeline, and the second circulating pump is arranged on the pipeline between the water collecting device and the inlet of the CDU cooling module.
11. An air conditioning cooling system as claimed in claim 10, wherein said liquid cooling means further comprises a fourth valve, said fourth valve being disposed in said conduit at the inlet end of said ejector member.
12. The air conditioner cooling system of claim 10, wherein the liquid cooling device further comprises a third filter, and the third filter is disposed on the pipe of the liquid outlet end of the second circulation pump.
13. An air conditioner cooling system as claimed in any one of claims 3 to 5, wherein the liquid cooling device includes a CDU cooling module, a third circulation pump and the heat dissipation portion, the heat dissipation portion is a dry cooling heat exchanger, the dry cooling heat exchanger is disposed at an outlet of a primary air channel of the indirect heat exchange unit, an outlet of the dry cooling heat exchanger is connected to an inlet of the CDU cooling module through a pipeline, an outlet of the CDU cooling module is connected to an inlet of the dry cooling heat exchanger through a pipeline, and the third circulation pump is disposed on a pipeline between the dry cooling heat exchanger and the CDU cooling module.
14. An air conditioning cooling system as claimed in claim 13, wherein said liquid cooling means further comprises a fourth filter disposed in said CDU cooling module inlet line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111308388.8A CN113864932A (en) | 2021-11-05 | 2021-11-05 | Air conditioner cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111308388.8A CN113864932A (en) | 2021-11-05 | 2021-11-05 | Air conditioner cooling system |
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| Publication Number | Publication Date |
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| CN113864932A true CN113864932A (en) | 2021-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111308388.8A Pending CN113864932A (en) | 2021-11-05 | 2021-11-05 | Air conditioner cooling system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115175521A (en) * | 2022-06-30 | 2022-10-11 | 阿里巴巴（中国）有限公司 | Dry cooler, control method of dry cooler, electronic device and storage medium |
-
2021
- 2021-11-05 CN CN202111308388.8A patent/CN113864932A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115175521A (en) * | 2022-06-30 | 2022-10-11 | 阿里巴巴（中国）有限公司 | Dry cooler, control method of dry cooler, electronic device and storage medium |
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