CN108692405B - Air conditioning apparatus and control method of air conditioning apparatus - Google Patents
Air conditioning apparatus and control method of air conditioning apparatus Download PDFInfo
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- CN108692405B CN108692405B CN201810570855.6A CN201810570855A CN108692405B CN 108692405 B CN108692405 B CN 108692405B CN 201810570855 A CN201810570855 A CN 201810570855A CN 108692405 B CN108692405 B CN 108692405B
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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
- F24F5/001—Compression cycle type
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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
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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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
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
- H05K7/208—Liquid cooling with phase change
- H05K7/20827—Liquid cooling with phase change within rooms for removing heat from cabinets, e.g. air conditioning devices
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/20—Humidity
- F24F2110/22—Humidity of the outside air
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Abstract
The invention provides an air conditioner and a control method of the air conditioner. The air conditioning apparatus includes: the indirect heat exchange core body is provided with a cavity around or inside; the first side ventilation valve is arranged on the front side of the cavity; the second bypass air valve is arranged on the front side of the indirect heat exchange core body; the outdoor sensor is arranged at an air inlet of the air conditioning equipment and used for acquiring the outdoor environment temperature and the outdoor environment humidity; and the controller is used for controlling the first bypass air valve and the second bypass air valve to be opened or closed according to the range of the outdoor environment temperature and/or the outdoor environment humidity, so that the air conditioning equipment enters different working modes. When the air conditioning equipment is in an indirect heat exchange refrigeration mode or a mechanical refrigeration mode, the opening and closing of the first bypass air valve and the second bypass air valve are controlled, so that whether indoor hot air enters the indirect heat exchange core body or not is flexibly controlled.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner and a control method of the air conditioner.
Background
Along with the advocated national energy conservation and emission reduction, the idea of suggesting a green data center is more and more emphasized, the evaporative cooling technology is also popularized and applied to the field of machine room air conditioners, and natural clean energy is fully utilized to cool the machine room. The existing indirect evaporative cooling and mechanical refrigeration are integrated, and the mechanical refrigeration is adopted under the condition that the indirect evaporative cooling does not meet the load, so that the cooling requirement can be met in the transition period and in the summer with high temperature. However, in the process of mechanical refrigeration, hot air returning from the machine room passes through the indirect heat exchange core body and then is cooled in the evaporator, and then the processed low-temperature air is sent to the machine room through the fan. The resistance of the air passing through the indirect heat exchange core body is relatively large, so that the power consumption of the fan is increased; meanwhile, the temperature of the outdoor air is high relative to the air returned by the machine room, so that the relatively low air returned by the machine room is heated, mechanical refrigeration of the compressor is not facilitated, and the refrigeration power consumption of the compressor is increased.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art or the related art.
To this end, a first aspect of the invention is directed to an air conditioning system.
A second aspect of the present invention is to provide a control method of an air conditioning apparatus.
In view of the above, according to one aspect of the present invention, there is provided an air conditioning apparatus including: the indirect heat exchange core body is provided with a cavity around or inside; the first side ventilation valve is arranged on the front side of the cavity; the second bypass air valve is arranged on the front side of the indirect heat exchange core body; the outdoor sensor is arranged at an air inlet of the air conditioning equipment and used for acquiring the outdoor environment temperature and the outdoor environment humidity; and the controller is used for controlling the first bypass air valve and the second bypass air valve to be opened or closed according to the range of the outdoor environment temperature and/or the outdoor environment humidity, so that the air conditioning equipment enters different working modes.
The air conditioning equipment provided by the invention is applied to closed rooms with dense equipment and large heat productivity, such as machine rooms, data centers and the like, is of an integral box structure and is provided with an indirect heat exchange core body, a cavity is arranged around or in the indirect heat exchange core body, and a first bypass air valve and a second bypass air valve are respectively arranged on the front side of the cavity and the front side of the indirect heat exchange core body and used for controlling whether indoor hot air enters the indirect heat exchange core body or not. The air conditioning equipment firstly obtains the outdoor environment temperature and the outdoor environment humidity, and controls the first bypass air valve and the second bypass air valve to be opened or closed according to the range of the outdoor environment temperature and/or the outdoor environment humidity, so that the air conditioning equipment enters different working modes. According to the technical scheme provided by the invention, the air conditioning equipment is controlled to enter different working modes by determining the range of the outdoor environment temperature and/or the outdoor environment humidity, and meanwhile, the opening or closing of the first bypass air valve and the second bypass air valve is controlled, so that whether indoor hot air enters the indirect heat exchange core body or not is flexibly controlled, and when the indoor hot air does not need to enter the indirect heat exchange core body, the indoor hot air directly enters other parts through a cavity around or inside the indirect heat exchange core body, so that the air resistance is reduced, and the operation energy consumption of the air conditioning equipment is reduced.
According to the air conditioning equipment, the following technical characteristics can be provided:
in the above technical solution, preferably, the air conditioning apparatus further includes: compressor, spray assembly, evaporimeter, the controller is specifically used for: when the outdoor environment temperature is higher than a first preset value, the first bypass air valve is controlled to be opened, the second bypass air valve and the spraying assembly are controlled to be closed, the compressor is controlled to be started, and indoor hot air returned by the air return opening of the air conditioning equipment enters the evaporator to be mechanically refrigerated after passing through the cavity.
In this technical scheme, when outdoor ambient temperature is greater than first default, it is enough high to explain this moment outdoor ambient temperature, adopt indirect evaporation cooling mode and indirect air cooling mode all can't satisfy the computer lab, data center's cooling demand, need adopt inverter compressor cooling mode this moment, therefore, the control compressor is opened, control first by-pass air valve is opened, second by-pass air valve closes, the hot-air that then the computer lab came out passes through the return air inlet, directly pass through the cavity part of indirect heat exchange core through first by-pass air valve, do not pass through indirect heat exchange core, prevent on the one hand that the air that comes out from the computer lab is heated by the outdoor air of high temperature, on the other hand is owing to not passing through indirect heat exchange core air resistance and significantly reducing, air conditioning equipment's energy consumption has been reduced. On the other hand, because do not need in the inside evaporation of indirect heat transfer core, consequently close spray assembly, indoor hot-air gets into the evaporimeter behind the cavity, carries out compressor mechanical refrigeration, for computer lab, data center refrigerates fast, guarantees the normal work needs of equipment in computer lab, the data center.
In any of the above technical solutions, preferably, the controller is specifically configured to: when the outdoor environment temperature is less than or equal to the first preset value and more than or equal to the second preset value, and the outdoor environment humidity is less than or equal to the third preset value, the first bypass air valve is controlled to be closed, the second bypass air valve and the spraying assembly are controlled to be opened, and indoor hot air returned by the air return opening enters the indirect heat exchange core body to carry out indirect evaporation heat exchange refrigeration.
In the technical scheme, when the outdoor environment temperature is less than or equal to a first preset value and more than or equal to a second preset value, and the outdoor environment humidity is less than or equal to a third preset value, the indirect evaporation cooling mode is started. Specifically, open the second bypass blast gate, close first bypass valve, make indoor hot-air get into indirect heat transfer core, control spray set opens simultaneously, begins to spray to indirect heat transfer core, and a large amount of heats can be taken away to water when the evaporation, makes the temperature of indirect heat transfer core reduce, and indoor hot-air in the indirect heat transfer core carries out the heat exchange with the indirect heat transfer core after the cooling, insufflates afterwards indoorly, realizes the cooling. Simultaneously, outdoor cold air blows to indirect heat transfer core for the evaporation rate of the water on indirect heat transfer core surface, and then makes the more quick cooling of indirect heat transfer core, and simultaneously, outdoor cold air still can blow off the humid air that is mingled with vapor around the indirect heat transfer core from the air exit, avoids the interior humid air of air conditioning equipment to pile up, improves the efficiency and the stability of air conditioning equipment work. Meanwhile, because the compressor is not needed to work, the energy consumption of the air conditioning equipment can be reduced.
In any one of the above technical solutions, preferably, the first preset value is: a difference between the indoor target temperature of the air conditioning apparatus and the fourth preset value.
In this technical solution, the first preset value is: a difference between the indoor target temperature of the air conditioning apparatus and the fourth preset value. The fourth preset value can be specifically set according to the power consumption and heating conditions of equipment in a machine room and a data center. Through setting up appropriate fourth default for when indoor ambient temperature is greater than the difference of indoor set temperature such as computer lab, data center and fourth default, indirect evaporation cooling mode and indirect air cooling mode can't satisfy computer lab, data center's cooling demand, need open the compressor and carry out compressor cooling mode. When the outdoor environment temperature is less than or equal to the first preset value, indirect evaporation cooling or indirect air cooling can be adopted. The cooling system ensures that the running energy consumption of the air conditioning equipment is reduced on the premise of meeting the cooling requirements of a machine room and a data center.
In any of the above technical solutions, preferably, the controller is specifically configured to: when the outdoor environment temperature is lower than the second preset value, the first bypass air valve, the spraying assembly and the second bypass air valve are controlled to be closed, indoor hot air returned by the air return opening enters the indirect heat exchange core body, and indirect heat exchange refrigeration is carried out on the indoor hot air and outdoor air.
In the technical scheme, when the outdoor environment temperature is lower than the second preset value, the outdoor temperature is lower, and an indirect air cooling mode is adopted. Specifically, the first bypass vent valve is controlled to be closed, the second bypass air valve is controlled to be opened, outdoor low-temperature air and hot air from a machine room form vertical and horizontal cross flow through the indirect heat exchange core, and a good heat exchange effect can be obtained after heat exchange is strengthened; under the condition that the cooling capacity generated by air heat exchange cannot meet the cooling demands of a machine room and a data center, the variable frequency compressor can be started to supplement refrigeration, and the cooling demands of the machine room and the data center under different working conditions are met by adopting an indirect heat exchange refrigeration and mechanical refrigeration superposition combined operation mode. Because the outdoor temperature is very low, avoid spraying the in-process water and freeze, consequently spray set and circulating water pump do not work under this mode.
According to a second aspect of the present invention, there is provided a control method of an air conditioner, which is applied to the air conditioner of any one of the above technical solutions, the control method including: acquiring outdoor environment temperature and outdoor environment humidity; and controlling the opening or closing of the first bypass air valve and the second bypass air valve according to the range of the outdoor environment temperature and/or the outdoor environment humidity, so that the air conditioning equipment enters different working modes.
The control method of the air conditioning equipment provided by the invention comprises the steps of firstly obtaining the outdoor environment temperature and the outdoor environment humidity, and controlling the opening or closing of the first bypass air valve and the second bypass air valve according to the range of the outdoor environment temperature and/or the outdoor environment humidity, so that the air conditioning equipment enters different working modes. According to the technical scheme provided by the invention, the air conditioning equipment is controlled to enter different working modes by determining the range of the outdoor environment temperature and/or the outdoor environment humidity, and meanwhile, the opening or closing of the first bypass air valve and the second bypass air valve is controlled, so that whether indoor hot air enters the indirect heat exchange core body or not is flexibly controlled, and when the indoor hot air does not need to enter the indirect heat exchange core body, the indoor hot air directly enters other parts through a cavity around or inside the indirect heat exchange core body, so that the air resistance is reduced, and the operation energy consumption of the air conditioning equipment is reduced.
The control method of the air conditioning equipment according to the present invention may further have the following technical features:
in the foregoing technical solution, preferably, the opening or closing of the first bypass damper and the second bypass damper is controlled according to the range of the outdoor environment temperature and/or the outdoor environment humidity, so that the air conditioning equipment enters different operating modes, specifically including: when the outdoor environment temperature is higher than a first preset value, the first bypass air valve is controlled to be opened, the second bypass air valve and the spraying assembly of the air conditioning equipment are controlled to be closed, the compressor of the air conditioning equipment is controlled to be opened, and indoor hot air returned by the air return opening of the air conditioning equipment enters the evaporator to be mechanically refrigerated after passing through the cavity.
In this technical scheme, when outdoor ambient temperature is greater than first default, it is enough high to explain this moment outdoor ambient temperature, adopt indirect evaporation cooling mode and indirect air cooling mode all can't satisfy the computer lab, data center's cooling demand, need adopt inverter compressor cooling mode this moment, therefore, the control compressor is opened, control first by-pass air valve is opened, second by-pass air valve closes, the hot-air that then the computer lab came out passes through the return air inlet, directly pass through the cavity part of indirect heat exchange core through first by-pass air valve, do not pass through indirect heat exchange core, prevent on the one hand that the air that comes out from the computer lab is heated by the outdoor air of high temperature, on the other hand is owing to not passing through indirect heat exchange core air resistance and significantly reducing, air conditioning equipment's energy consumption has been reduced. On the other hand, because do not need in the inside evaporation of indirect heat transfer core, consequently close spray assembly, get into the evaporimeter behind the cavity through indoor hot-air, carry out compressor mechanical refrigeration, for computer lab, data center refrigerate fast, guarantee the normal work needs of equipment in computer lab, the data center.
In any of the above technical solutions, preferably, the opening or closing of the first bypass damper and the second bypass damper is controlled according to the range of the outdoor ambient temperature and/or the outdoor ambient humidity, so that the air conditioning equipment enters different operation modes, specifically including: when the outdoor environment temperature is less than or equal to the first preset value and more than or equal to the second preset value, and the outdoor environment humidity is less than or equal to the third preset value, the first bypass air valve is controlled to be closed, the second bypass air valve and the spraying assembly are controlled to be opened, and indoor hot air returned by the air return opening enters the indirect heat exchange core body to carry out indirect evaporation heat exchange refrigeration.
In the technical scheme, when the outdoor environment temperature is less than or equal to a first preset value and more than or equal to a second preset value, and the outdoor environment humidity is less than or equal to a third preset value, the indirect evaporation cooling mode is started. Specifically, open the second bypass blast gate, close first bypass valve, make indoor hot-air get into indirect heat transfer core, control spray set opens simultaneously, begins to spray to indirect heat transfer core, and a large amount of heats can be taken away to water when the evaporation, makes the temperature of indirect heat transfer core reduce, and indoor hot-air in the indirect heat transfer core carries out the heat exchange with the indirect heat transfer core after the cooling, insufflates afterwards indoorly, realizes the cooling. Simultaneously, outdoor cold air blows to indirect heat transfer core for the evaporation rate of the water on indirect heat transfer core surface, and then makes the more quick cooling of indirect heat transfer core, and simultaneously, outdoor cold air still can blow off the humid air that is mingled with vapor around the indirect heat transfer core from the air exit, avoids the interior humid air of air conditioning equipment to pile up, improves the efficiency and the stability of air conditioning equipment work. Meanwhile, because the compressor is not needed to work, the energy consumption of the air conditioning equipment can be reduced.
In any one of the above technical solutions, preferably, the first preset value is: a difference between the indoor target temperature of the air conditioning apparatus and the fourth preset value.
In this technical solution, the first preset value is: a difference between the indoor target temperature of the air conditioning apparatus and the fourth preset value. The fourth preset value can be specifically set according to the power consumption and heating conditions of equipment in a machine room and a data center. Through setting up appropriate fourth default for when indoor ambient temperature is greater than the difference of indoor set temperature such as computer lab, data center and fourth default, indirect evaporation cooling mode and indirect air cooling mode can't satisfy computer lab, data center's cooling demand, need open the compressor and carry out compressor cooling mode. When the outdoor environment temperature is less than or equal to the first preset value, indirect evaporation cooling or indirect air cooling can be adopted. The cooling system ensures that the running energy consumption of the air conditioning equipment is reduced on the premise of meeting the cooling requirements of a machine room and a data center.
In any of the above technical solutions, preferably, the opening or closing of the first bypass damper and the second bypass damper is controlled according to the range of the outdoor ambient temperature and/or the outdoor ambient humidity, so that the air conditioning equipment enters different operation modes, specifically including: when the outdoor environment temperature is lower than the second preset value, the first bypass air valve, the spraying assembly and the second bypass air valve are controlled to be closed, indoor hot air returned by the air return opening enters the indirect heat exchange core body, and indirect heat exchange refrigeration is carried out on the indoor hot air and outdoor air.
In the technical scheme, when the outdoor environment temperature is lower than the second preset value, the outdoor temperature is lower, and an indirect air cooling mode is adopted. Specifically, the first bypass vent valve is controlled to be closed, the second bypass air valve is controlled to be opened, outdoor low-temperature air and hot air from a machine room form vertical and horizontal cross flow through the indirect heat exchange core, and a good heat exchange effect can be obtained after heat exchange is strengthened; under the condition that the cooling capacity generated by air heat exchange cannot meet the cooling demands of a machine room and a data center, the variable frequency compressor can be started to supplement refrigeration, and the cooling demands of the machine room and the data center under different working conditions are met by adopting an indirect heat exchange refrigeration and mechanical refrigeration superposition combined operation mode. Because the outdoor temperature is very low, avoid spraying the in-process water and freeze, consequently spray set and circulating water pump do not work under this mode.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 illustrates a structural view of an air conditioner according to an embodiment of the present invention;
FIG. 2 shows a schematic cross-sectional view A-A of the air conditioning apparatus of FIG. 1 according to one embodiment of the invention;
FIG. 3 shows a schematic cross-sectional view at B-B of the air conditioning apparatus of FIG. 1 in accordance with one embodiment of the invention;
fig. 4 is a flowchart illustrating a control method of an air conditioner according to an embodiment of the present invention;
fig. 5 is a flowchart illustrating a control method of an air conditioner according to another embodiment of the present invention;
fig. 6 is a flowchart illustrating a control method of an air conditioner according to still another embodiment of the present invention;
fig. 7 shows a flowchart of a control method of an air conditioner according to still another embodiment of the present invention.
Wherein, the correspondence between the reference numbers and the component names in fig. 1 to 3 is:
the heat exchanger comprises an indirect heat exchange core body 1, a cavity 2, a first bypass vent valve 3, a second bypass vent valve 4, an outdoor temperature and humidity sensor 5, an air inlet 6, a compressor 7, a spray assembly 8, an evaporator 9, a return air inlet 10, a return air filter screen 11, a fan 12, a return air temperature and humidity sensor 13, a wet film humidifier 14, an air-cooled condenser 15, an axial flow fan 16, a spray circulating water pump 17, a water collecting tank 18, a humidification circulating water pump 19, a water replenishing electromagnetic valve 20, a water level switch 21 and an overflow pipe 22.
Detailed Description
So that the manner in which the above recited aspects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited to the specific embodiments disclosed below.
An air conditioner and a control method of the air conditioner according to some embodiments of the present invention are described below with reference to fig. 1 to 7.
As shown in fig. 1 to 3, in an embodiment of a first aspect of the present invention, there is provided an air conditioning apparatus including: the indirect heat exchange core body 1 is provided with a cavity 2 around or inside the indirect heat exchange core body 1; the first side vent valve 3 is arranged on the front side of the cavity 2; the second bypass air valve 4 is arranged on the front side of the indirect heat exchange core body 1; the outdoor temperature and humidity sensor 5 is arranged at an air inlet 6 of the air conditioning equipment and is used for acquiring outdoor environment temperature and outdoor environment humidity; and the controller (not shown in the figure) is used for controlling the first bypass air valve 3 and the second bypass air valve 4 to be opened or closed according to the range of the outdoor environment temperature and/or the outdoor environment humidity, so that the air conditioning equipment enters different working modes.
The air conditioning equipment provided by the invention is applied to closed rooms with dense equipment and large heat productivity, such as machine rooms, data centers and the like, is of an integral box structure and is provided with an indirect heat exchange core body 1, a cavity 2 is arranged around or in the indirect heat exchange core body 1, and a first bypass air valve 3 and a second bypass air valve 4 are respectively arranged on the front side of the cavity 2 and the front side of the indirect heat exchange core body 1 and are used for controlling whether indoor hot air enters the indirect heat exchange core body 1 or not. The air conditioning equipment firstly obtains the outdoor environment temperature and the outdoor environment humidity, and controls the first bypass air valve 3 and the second bypass air valve 4 to be opened or closed according to the range of the outdoor environment temperature and/or the outdoor environment humidity, so that the air conditioning equipment enters different working modes. According to the embodiment provided by the invention, the air conditioning equipment is controlled to enter different working modes by determining the range of the outdoor environment temperature and/or the outdoor environment humidity, and meanwhile, the first bypass air valve 3 and the second bypass air valve 4 are controlled to be opened or closed, so that whether indoor hot air enters the indirect heat exchange core 1 or not is flexibly controlled, when the indoor hot air does not need to enter the indirect heat exchange core 1, the indoor hot air directly enters other parts through the cavity 2 around or inside the indirect heat exchange core 1, the air resistance is reduced, and the operation energy consumption of the air conditioning equipment is reduced.
The number of the cavities 2 can be set to 2, and the cavities can be single or divided into a plurality of cavities, the positions of the cavities 2 can be arranged in the front and at the back of the indirect heat exchange core body 1, and can also be arranged in the middle of the indirect heat exchange core body 1, so that the indirect heat exchange core body 1 is divided into two parts.
In the above embodiment, preferably, the air conditioning apparatus further includes: compressor 7, spray assembly 8, evaporimeter 9, the controller is used for specifically: when the outdoor environment temperature is higher than the first preset value, the first bypass air valve 3 is controlled to be opened, the second bypass air valve 4 and the spraying assembly 8 are controlled to be closed, the compressor 7 is controlled to be opened, and indoor hot air returned by an air return opening 10 of the air conditioning equipment enters the evaporator 9 for mechanical refrigeration after passing through the cavity 2.
In this embodiment, when the outdoor ambient temperature To is greater than the first preset value (Ts ℃ -Ta ℃), it indicates that the outdoor ambient temperature is high enough at this time, the cooling requirements of the machine room and the data center cannot be met by adopting the indirect evaporation cooling mode and the indirect air cooling mode, and at this time, the cooling mode of the inverter compressor 7 needs To be adopted, so that the compressor 7 is controlled To be turned on, the first bypass air valve 3 is controlled To be turned on, and the second bypass air valve 4 is controlled To be turned off, specifically, hot air coming out from the machine room passes through the air return opening 10, is filtered by the air return filter screen 11, passes through the second bypass air valve 4, directly passes through the cavity 2 part of the indirect heat exchange core 1, is cooled by the evaporator 9, and is pressurized and conveyed To the machine room. By controlling the first bypass air valve 3 to be fully opened and the second bypass air valve 4 to be fully closed, on one hand, the air coming out of the machine room is prevented from being heated by high-temperature outdoor air, and on the other hand, the power consumption of the fan 12 is also reduced because the air resistance is greatly reduced without passing through the indirect heat exchange core body 1. Meanwhile, the unit detects the temperature and humidity value of the return air in real time through the return air temperature and humidity sensor 13, compares the temperature and humidity value with the set return air temperature Ts and humidity Hs, and adjusts the operating frequency of the compressor 7 according to the temperature requirement, so that the return air temperature is controlled within the set range; and controlling the wet film humidifier 14 to perform humidification processing and the evaporator 9 to perform dehumidification processing according to the humidity requirement, so as to control the return air humidity within the set range. The compressor 7 is used for mechanical refrigeration, so that the machine room and the data center can be rapidly refrigerated, and the normal working requirements of equipment in the machine room and the data center can be met.
In any of the above embodiments, preferably, the controller is specifically configured to: when the outdoor environment temperature is less than or equal to the first preset value and more than or equal to the second preset value, and the outdoor environment humidity is less than or equal to the third preset value, the first bypass air valve 3 is controlled to be closed, the second bypass air valve 4 and the spraying assembly 8 are controlled to be opened, and the indoor hot air returned by the air return opening 10 enters the indirect heat exchange core 1 to carry out indirect evaporation heat exchange refrigeration.
In this embodiment, when the outdoor ambient temperature To is less than or equal To the first preset value Tb and greater than or equal To the second preset value Tb, and the outdoor ambient humidity Ho is less than or equal To the third preset value Ha, the indirect evaporative cooling mode is started. Specifically, a second bypass air valve 4 is opened, a first bypass vent valve 3 is closed, hot air coming out of the machine room passes through a return air inlet 10, is filtered by a return air filter screen 11, enters the indirect heat exchange core body 1 through the second bypass air valve 4 to exchange heat with evaporative cooling to be changed into cold air, is humidified through a wet film humidifier 14, and is supplied with constant-temperature and constant-humidity air to the machine room through a fan 12; outdoor cold air is evaporated through the indirect heat exchange core 1 to form saturated water vapor, so that evaporative cooling is formed, the saturated water vapor is pumped to the atmosphere from the top through the air-cooled condenser 15 by the axial flow fan 16, at the moment, the second bypass air valve 4 is completely opened, so that hot air returning from a machine room only passes through the indirect heat exchange core 1, and the first bypass air valve 3 is completely closed. The spraying circulating water pump 17 works at the moment, and pressurizes and conveys the cold water in the water collecting tank 18 to the spraying assembly 8, and the cold water is uniformly sprayed on the outer surface of the indirect heat exchange core body 1. The unit detects the temperature and humidity value of return air in real time through a return air temperature and humidity sensor 13, compares the temperature and humidity value with set return air temperature Ts and humidity Hs, automatically controls the rotating speed of an axial flow fan 16 according to temperature requirements, and controls the temperature of the return air within a set range by adjusting the air quantity of outdoor cold air; and controlling the wet film humidifier 14 to perform humidification processing according to the humidity requirement, and controlling the evaporator 9 to perform dehumidification processing, so that the return air humidity is controlled within a set range. Since the compressor 7 is not required to operate, the reduction of the energy consumption of the air conditioning equipment can be realized.
In any of the above embodiments, preferably, the first preset value is: a difference between the indoor target temperature of the air conditioning apparatus and the fourth preset value.
In this embodiment, the first preset value is: a difference between the indoor target temperature of the air conditioning apparatus and the fourth preset value. The fourth preset value can be specifically set according to the power consumption and heating conditions of equipment in a machine room and a data center. Through setting up appropriate fourth default for when indoor ambient temperature is greater than the difference of indoor set temperature and fourth default such as computer lab, data center, indirect evaporation cooling mode and indirect air cooling mode can't satisfy computer lab, data center's cooling demand, need open compressor 7 and carry out compressor 7 cooling mode. When the outdoor environment temperature is less than or equal to the first preset value, indirect evaporation cooling or indirect air cooling can be adopted. The cooling system ensures that the running energy consumption of the air conditioning equipment is reduced on the premise of meeting the cooling requirements of a machine room and a data center.
In any of the above embodiments, preferably, the controller is specifically configured to: when the outdoor environment temperature is lower than the second preset value, the first bypass air valve 3, the spraying assembly 8 and the second bypass air valve 4 are controlled to be closed, and the indoor hot air returned by the air return opening 10 enters the indirect heat exchange core body 1 to perform indirect heat exchange refrigeration with the outdoor air.
In this embodiment, when the outdoor ambient temperature To is less than the second preset value Tb, which indicates that the outdoor temperature is lower, the indirect air cooling mode is adopted. Specifically, the first bypass air valve 3 is controlled to be closed, the second bypass air valve 4 is controlled to be opened, hot air coming out of the machine room passes through the air return opening 10, is filtered by the air return filter screen 11, enters the indirect heat exchange core body 1 through the second bypass air valve 4 to indirectly exchange heat between the hot air and outdoor low-temperature air to form cold air, is humidified by the wet film humidifier 14, and is supplied with constant-temperature and constant-humidity air to the machine room by the fan 12. Outdoor low-temperature air forms vertical and horizontal cross flow with hot air from a machine room through the indirect heat exchange core body 1, and is pumped and exhausted to the atmosphere from the top through the axial flow fan 16 after the heat exchange is strengthened through the air-cooled condenser 15. Because the outdoor temperature is very low, indirect air-air cooling can meet the heat exchange requirement, and water is prevented from freezing in the spraying process, so the spraying circulating water pump 17 does not work in the mode. The return air temperature and humidity value is detected in real time through a return air temperature and humidity sensor 13, the return air temperature and humidity value is compared with the set return air temperature Ts and humidity Hs, the rotating speed of the axial flow fan 16 is automatically controlled according to the temperature requirement, and the return air temperature is controlled within the set range by adjusting the air quantity of outdoor cold air; and controlling the wet film humidifier 14 to perform humidification processing according to the humidity requirement, and controlling the evaporator 9 to perform dehumidification processing, so that the return air humidity is controlled within a set range. Under the condition that the cooling capacity generated by air heat exchange cannot meet the cooling demands of a machine room and a data center, the variable frequency compressor 7 can be started to supplement refrigeration, and the cooling demands of the machine room and the data center under different working conditions are met by adopting an indirect heat exchange refrigeration and mechanical refrigeration superposition combined operation mode.
Wherein, air conditioning equipment still includes: the inlet of the humidifying circulating water pump 19 is also connected with the water collecting tank 18, the outlet of the humidifying circulating water pump is connected with the wet film humidifier 14, and water drops flow down from the surface of the wet film humidifier 14 during humidifying and are finally guided to the water collecting tank 18 for circulating operation; the water collecting tank 18 is provided with a water replenishing electromagnetic valve 20 which can replenish consumed water in time, a water level switch 21 is arranged in the water collecting tank 18, when the water level is low, the water level switch 21 sends a signal to the water replenishing electromagnetic valve 20 to replenish water in time, and when the water level reaches the required water level, the water replenishing is automatically closed; the upper part of the water collecting tank 18 is provided with an overflow pipe 22, and when the water level is too high, the overflow pipe 22 can drain water in time to prevent the water level from overflowing.
In an embodiment of the second aspect of the present invention, a control method for an air conditioner is provided, which is applied to the air conditioner of any of the above embodiments, and fig. 4 shows a flowchart of the control method for the air conditioner according to an embodiment of the present invention. As shown in fig. 1 to 4, the control method includes:
and step 404, controlling the first bypass air valve and the second bypass air valve to be opened or closed according to the range of the outdoor environment temperature and/or the outdoor environment humidity, so that the air conditioning equipment enters different working modes.
The control method of the air conditioning equipment provided by the invention comprises the steps of firstly obtaining the outdoor environment temperature and the outdoor environment humidity, and controlling the opening or closing of the first bypass air valve 3 and the second bypass air valve 4 according to the range of the outdoor environment temperature and/or the outdoor environment humidity, so that the air conditioning equipment enters different working modes. According to the embodiment provided by the invention, the air conditioning equipment is controlled to enter different working modes by determining the range of the outdoor environment temperature and/or the outdoor environment humidity, and meanwhile, the first bypass air valve 3 and the second bypass air valve 4 are controlled to be opened or closed, so that whether indoor hot air enters the indirect heat exchange core 1 or not is flexibly controlled, when the indoor hot air does not need to enter the indirect heat exchange core 1, the indoor hot air directly enters other parts through the cavity 2 around or inside the indirect heat exchange core 1, the air resistance is reduced, and the operation energy consumption of the air conditioning equipment is reduced.
Fig. 5 is a flowchart illustrating a control method of an air conditioner according to another embodiment of the present invention. As shown in fig. 1 to 3 and 5, the method includes:
and step 504, when the outdoor environment temperature is higher than a first preset value, controlling the first bypass air valve to be opened, the second bypass air valve and the spray assembly of the air conditioning equipment to be closed, and the compressor of the air conditioning equipment to be opened, wherein indoor hot air returned by the air return opening of the air conditioning equipment enters the evaporator to be mechanically refrigerated after passing through the cavity.
In this embodiment, when the outdoor ambient temperature is greater than the first preset value, it is described that the outdoor ambient temperature is high enough at this moment, the machine room cannot be satisfied by the indirect evaporation cooling mode and the indirect air cooling mode, the cooling demand of the data center is satisfied, at this moment, the frequency conversion compressor 7 cooling mode needs to be adopted, therefore, the compressor 7 is controlled to be opened, the first bypass air valve 3 is controlled to be opened, the second bypass air valve 4 is controlled to be closed, then, the hot air coming out of the machine room passes through the air return opening 10, directly passes through the cavity 2 part of the indirect heat exchange core 1 through the first bypass air valve 3, and does not pass through the indirect heat exchange core 1, on the one hand, the air coming out of the machine room is prevented from being heated by the high-temperature outdoor air, on the other hand. On the other hand, because do not need in the inside evaporation of indirect heat transfer core 1, consequently close spray set 8, through indoor hot-air entering evaporimeter 9 behind cavity 2, carry out compressor 7 mechanical refrigeration, for computer lab, data center quick refrigeration, guarantee the normal work needs of equipment in computer lab, the data center.
Fig. 6 is a flowchart illustrating a control method of an air conditioner according to still another embodiment of the present invention. As shown in fig. 1 to 3 and 6, the method includes:
and step 604, when the outdoor environment temperature is less than or equal to a first preset value and greater than or equal to a second preset value, and the outdoor environment humidity is less than or equal to a third preset value, controlling the first bypass air valve to be closed, the second bypass air valve and the spraying assembly to be opened, and allowing the indoor hot air returned from the air return inlet to enter the indirect heat exchange core body for indirect evaporation heat exchange refrigeration.
In this embodiment, when the outdoor ambient temperature is less than or equal to the first preset value and greater than or equal to the second preset value, and the outdoor ambient humidity is less than or equal to the third preset value, the indirect evaporation cooling mode is started. Specifically, open second bypass blast gate 4, close first bypass valve 3, make indoor hot-air get into indirect heat transfer core 1, control spray assembly 8 simultaneously opens, begin to spray to indirect heat transfer core 1, a large amount of heats can be taken away to water when the evaporation, make the temperature of indirect heat transfer core 1 reduce, indoor hot-air in the indirect heat transfer core 1 carries out the heat exchange with indirect heat transfer core 1 after the cooling, insufflate afterwards indoorly, realize the cooling. Simultaneously, outdoor cold air blows to indirect heat transfer core 1 for the evaporation rate of the water on indirect heat transfer core 1 surface, and then makes the cooling that indirect heat transfer core 1 is faster, and simultaneously, outdoor cold air still can blow off the humid air that is mingled with vapor around indirect heat transfer core 1 from the air exit, avoids the interior humid air of air conditioning equipment to pile up, improves the efficiency and the stability of air conditioning equipment work. Meanwhile, the compressor 7 is not needed to work, so that the energy consumption of the air conditioning equipment can be reduced.
In any of the above embodiments, preferably, the first preset value is: a difference between the indoor target temperature of the air conditioning apparatus and the fourth preset value.
In this embodiment, the first preset value is: a difference between the indoor target temperature of the air conditioning apparatus and the fourth preset value. The fourth preset value can be specifically set according to the power consumption and heating conditions of equipment in a machine room and a data center. Through setting up appropriate fourth default for when indoor ambient temperature is greater than the difference of indoor set temperature and fourth default such as computer lab, data center, indirect evaporation cooling mode and indirect air cooling mode can't satisfy computer lab, data center's cooling demand, need open compressor 7 and carry out compressor 7 cooling mode. When the outdoor environment temperature is less than or equal to the first preset value, indirect evaporation cooling or indirect air cooling can be adopted. The cooling system ensures that the running energy consumption of the air conditioning equipment is reduced on the premise of meeting the cooling requirements of a machine room and a data center.
Fig. 7 is a flowchart illustrating a control method of an air conditioner according to still another embodiment of the present invention. As shown in fig. 1 to 3 and 7, the method includes:
and 704, when the outdoor environment temperature is lower than a second preset value, controlling the first bypass air valve, the spraying assembly to be closed and the second bypass air valve to be opened, and allowing the indoor hot air returned from the air return opening to enter the indirect heat exchange core body to perform indirect heat exchange refrigeration with the outdoor air.
In this embodiment, when the outdoor ambient temperature is less than the second preset value, which indicates that the outdoor temperature is lower, the indirect air cooling mode is adopted. Specifically, the first bypass vent valve 3 is controlled to be closed, the second bypass air valve 4 is controlled to be opened, outdoor low-temperature air forms vertical and horizontal cross flow with hot air from a machine room through the indirect heat exchange core body 1, and a good heat exchange effect can be obtained after heat exchange is strengthened; under the condition that the cooling capacity generated by air heat exchange cannot meet the cooling demands of a machine room and a data center, the variable frequency compressor 7 can be started to supplement refrigeration, and the cooling demands of the machine room and the data center under different working conditions are met by adopting an indirect heat exchange refrigeration and mechanical refrigeration superposition combined operation mode. Since the outdoor temperature is low, freezing of water during spraying is avoided, and therefore the spray assembly 8 and the circulating water pump do not work in this mode.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. An air conditioning apparatus, characterized by comprising:
the indirect heat exchange core body is provided with a cavity around or inside;
the first side ventilation valve is arranged on the front side of the cavity;
the second bypass air valve is arranged on the front side of the indirect heat exchange core body;
the outdoor sensor is arranged at an air inlet of the air conditioning equipment and used for acquiring outdoor environment temperature and outdoor environment humidity;
the controller is used for controlling the first bypass air valve and the second bypass air valve to be opened or closed according to the range of the outdoor environment temperature and/or the outdoor environment humidity, so that the air conditioning equipment enters different working modes;
the air conditioning apparatus further includes: compressor, spray assembly, evaporimeter, the controller is specifically used for:
and when the outdoor environment temperature is higher than a first preset value, the first bypass air valve is controlled to be opened, the second bypass air valve and the spraying assembly are controlled to be closed, the compressor is controlled to be opened, and indoor hot air returned by an air return inlet of the air conditioning equipment enters the evaporator to be mechanically refrigerated after passing through the cavity.
2. The air conditioning apparatus of claim 1, wherein the controller is specifically configured to:
when the outdoor environment temperature is less than or equal to the first preset value and more than or equal to the second preset value, and the outdoor environment humidity is less than or equal to the third preset value, the first bypass air valve is controlled to be closed, the second bypass air valve and the spraying assembly are controlled to be opened, and indoor hot air returned by the air return opening enters the indirect heat exchange core body to carry out indirect evaporation heat exchange refrigeration.
3. Air conditioning apparatus as claimed in claim 1 or 2, characterized in that said first preset value is: and the difference value between the indoor target temperature of the air conditioning equipment and a fourth preset value.
4. The air conditioning apparatus of claim 2, wherein the controller is specifically configured to:
when the outdoor environment temperature is lower than the second preset value, the first bypass air valve, the spraying assembly and the second bypass air valve are controlled to be closed, and indoor hot air returned by the air return opening enters the indirect heat exchange core body to perform indirect heat exchange refrigeration with outdoor air.
5. A control method of an air conditioner for controlling the air conditioner according to any one of claims 1 to 4, the control method comprising:
acquiring outdoor environment temperature and outdoor environment humidity;
controlling the first bypass air valve and the second bypass air valve to be opened or closed according to the range of the outdoor environment temperature and/or the outdoor environment humidity, so that the air conditioning equipment enters different working modes;
according to the range of the outdoor environment temperature and/or the outdoor environment humidity, the opening or closing of the first bypass air valve and the second bypass air valve is controlled, so that the air conditioning equipment enters different working modes, and the method specifically comprises the following steps:
and when the outdoor environment temperature is higher than a first preset value, controlling the first bypass air valve to be opened, the second bypass air valve and the spraying assembly of the air conditioning equipment to be closed, and the compressor of the air conditioning equipment to be opened, wherein indoor hot air returned by the air return opening of the air conditioning equipment enters the evaporator to be mechanically refrigerated after passing through the cavity.
6. The method for controlling the air conditioning equipment according to claim 5, wherein the opening or closing of the first bypass damper and the second bypass damper is controlled according to the range of the outdoor ambient temperature and/or the outdoor ambient humidity, so that the air conditioning equipment enters different operation modes, specifically comprising:
when the outdoor environment temperature is less than or equal to the first preset value and more than or equal to the second preset value, and the outdoor environment humidity is less than or equal to the third preset value, the first bypass air valve is controlled to be closed, the second bypass air valve and the spraying assembly are controlled to be opened, and indoor hot air returned by the air return opening enters the indirect heat exchange core body to carry out indirect evaporation heat exchange refrigeration.
7. The control method of an air conditioning apparatus according to claim 5 or 6, wherein the first preset value is: and the difference value between the indoor target temperature of the air conditioning equipment and a fourth preset value.
8. The method for controlling the air conditioning equipment according to claim 6, wherein the opening or closing of the first bypass damper and the second bypass damper is controlled according to the range of the outdoor ambient temperature and/or the outdoor ambient humidity, so that the air conditioning equipment enters different operation modes, specifically comprising:
when the outdoor environment temperature is lower than the second preset value, the first bypass air valve, the spraying assembly and the second bypass air valve are controlled to be closed, and indoor hot air returned by the air return opening enters the indirect heat exchange core body to perform indirect heat exchange refrigeration with outdoor air.
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| CN109631164B (en) * | 2018-12-14 | 2020-09-25 | 奥克斯空调股份有限公司 | Control method of air conditioning unit |
| CN111520794A (en) * | 2019-02-01 | 2020-08-11 | 北京京东尚科信息技术有限公司 | Heat recovery heating system |
| CN111397034A (en) * | 2020-02-27 | 2020-07-10 | 华为技术有限公司 | Refrigeration device, control method for refrigeration device, control device, and refrigeration system |
| CN111417283A (en) * | 2020-03-13 | 2020-07-14 | 苏州浪潮智能科技有限公司 | Fresh air type heat recovery data center cooling system |
| CN114370718B (en) * | 2020-10-15 | 2024-01-30 | 深圳航羿知识产权服务有限公司 | Indirect evaporation refrigeration control system and control method |
| CN114576743A (en) * | 2020-11-30 | 2022-06-03 | 南京佳力图机房环境技术股份有限公司 | Indirect evaporation cooling unit suitable for high-heat weather |
| CN112413755B (en) * | 2020-12-14 | 2024-05-03 | 珠海格力电器股份有限公司 | Precooling and dehumidifying device, precooling and dehumidifying method, precooling and dehumidifying system and air conditioning equipment |
| CN113108386B (en) * | 2021-04-30 | 2022-08-16 | 西藏宁算科技集团有限公司 | Air conditioning unit with wet film humidification function |
| CN114188859A (en) * | 2021-12-07 | 2022-03-15 | 山东电工电气集团智能电气有限公司 | Adjusting device and adjusting method for box-type substation |
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| KR101478345B1 (en) * | 2013-04-24 | 2014-12-31 | 황익현 | Air-conditioner and heater using evaporation of water electric vent type |
| CN104848452B (en) * | 2015-05-18 | 2017-05-17 | 武汉科技大学 | Efficient data room cooling temperature and humidity regulating device |
| CN105120637B (en) * | 2015-09-15 | 2017-12-22 | 西安工程大学 | Data center's evaporation cold compound cooling system of cooling water cold wind |
| CN106642445A (en) * | 2016-09-22 | 2017-05-10 | 新疆绿色使者干空气能源有限公司 | Dry indirect evaporation refrigeration and mechanical refrigeration combined cooling device and air conditioner cooling method thereof |
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