CN109357426B - Combined air conditioning system for machine room and control method thereof - Google Patents
Combined air conditioning system for machine room and control method thereof Download PDFInfo
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- CN109357426B CN109357426B CN201811132518.5A CN201811132518A CN109357426B CN 109357426 B CN109357426 B CN 109357426B CN 201811132518 A CN201811132518 A CN 201811132518A CN 109357426 B CN109357426 B CN 109357426B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B7/00—Compression machines, plants or systems, with cascade operation, i.e. with two or more circuits, the heat from the condenser of one circuit being absorbed by the evaporator of the next circuit
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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
- 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
- F24F5/0046—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 using natural energy, e.g. solar energy, energy from the ground
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
- F25B39/04—Condensers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/027—Condenser control arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/025—Compressor control by controlling speed
- F25B2600/0253—Compressor control by controlling speed with variable speed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/11—Fan speed control
- F25B2600/111—Fan speed control of condenser fans
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/13—Pump speed control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2513—Expansion valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2106—Temperatures of fresh outdoor air
Abstract
The invention discloses a combined air conditioning system for a machine room and a room, which comprises a machine room compressor, a refrigeration condenser, a machine room throttling device, an air distribution reservoir, a liquid pump, a machine room evaporator, a heat pipe valve, a heat pipe condenser, a refrigeration valve, a condensation evaporator, a room compressor, a four-way valve, an indoor heat exchanger, a first throttling device, a second throttling device, an outdoor heat exchanger and a bypass valve, wherein the inlet of the refrigeration condenser is communicated with the outlet of the machine room compressor; the outlet of the refrigeration condenser is communicated with the inlet of the machine room throttling device; the air distribution reservoir is respectively communicated with an inlet of the machine room compressor, an outlet of the heat pipe condenser, an outlet of the machine room throttling device and an inlet of the liquid pump. According to the invention, different working modes are switched according to the outdoor environment temperature, so that the high-efficiency refrigeration of the machine room and the annual high-energy heating of heat recovery of the machine room can be realized, the outdoor natural cold source and the heat of the machine room are fully utilized, and the energy-saving and emission-reducing effects are excellent.
Description
Technical Field
The invention relates to the technical field of air conditioners.
Background
The rapid development of information industry and digital construction promotes the number of machine rooms and base stations, the construction scale is rapidly increased, and the energy consumption of the air conditioners of the machine rooms and the base stations accounts for 40% -50% of the total energy consumption according to statistics. The sensible heat load ratio of machine room, base station is big, need continuous operation throughout the year, and in the season that indoor side settlement temperature is less than outdoor side temperature, conventional air conditioning system still need continue to operate compression refrigerating system, and refrigerating system work efficiency is low and easily breaks down, if can utilize indoor outer difference in temperature low-cost transport heat or for indoor side provides cold volume, will reduce air conditioning system's energy consumption and running cost greatly. The refrigerating system can be efficiently operated by utilizing the land cooling in high-temperature seasons such as summer and the like. And the energy efficiency of the system is greatly improved. The method of providing cold energy to indoor side by using outdoor low-temperature air has been paid attention by the researchers and the engineers in the industry, and the researches on engineering technology are developed in different forms, such as the currently adopted fresh air system, the air-air and air-water heat exchange systems in different forms, and the composite air conditioner applying the heat pipe technology.
Disclosure of Invention
The invention aims to provide a combined air conditioning system for a machine room and a control method thereof, which improve the operation efficiency of the system and realize energy conservation and emission reduction.
The technical scheme for realizing the purpose is as follows:
a combined air conditioning system for machine room and room comprises a machine room compressor, a refrigeration condenser, a machine room throttling device, an air-dividing liquid storage device, a liquid pump, a machine room evaporator, a hot pipe valve, a heat pipe condenser, a refrigeration valve, a condensation evaporator, a room compressor, a four-way valve, an indoor heat exchanger, a first throttling device, a second throttling device, an outdoor heat exchanger and a bypass valve, wherein,
the inlet of the refrigeration condenser is communicated with the outlet of the machine room compressor; the outlet of the refrigeration condenser is communicated with the inlet of the machine room throttling device;
the air distribution reservoir is respectively communicated with an inlet of the machine room compressor, an outlet of the heat pipe condenser, an outlet of the machine room throttling device and an inlet of the liquid pump;
the outlet of the liquid pump is communicated with the inlet of the machine room evaporator;
the first interface of the condensation evaporator is communicated with the outlet of the machine room evaporator through the heat pipe valve, the second interface is communicated with the inlet of the heat pipe condenser, the third interface is communicated with the first end of the outdoor heat exchanger through a second throttling device, and the fourth interface is communicated with the first end of the indoor heat exchanger through a first throttling device;
two ends of the refrigerating valve are respectively communicated with an outlet of the machine room evaporator and an outlet of the heat pipe condenser;
four ports of the four-way valve are respectively communicated with two ends of the room compressor, a second end of the outdoor heat exchanger and a second end of the indoor heat exchanger;
one end of the bypass valve is communicated with the first end of the outdoor heat exchanger, and the other end of the bypass valve passes through the fourth interface of the condensation evaporator.
Preferably, the refrigeration condenser is a water-cooled condenser, an air-cooled condenser or an evaporative condenser.
A control method for a combined air conditioning system of a machine room and a room,
when the outdoor temperature T0 is higher than the set temperature T2, the machine room air conditioner needs to supply cold, the room air conditioning system needs to supply cold, namely the machine room air conditioning system operates in a refrigeration mode, the refrigeration valve is opened at the moment, the heat pipe valve is closed, the machine room throttling device is opened, the bypass valve is opened, and the machine room air conditioning system forms a loop by a machine room compressor, a refrigeration condenser, a machine room throttling device, an air distribution liquid storage device, a liquid pump and a machine room evaporator; the room air-conditioning system comprises a room compressor, a four-way valve, an indoor heat exchanger, a first throttling device, a bypass valve and an outdoor heat exchanger to form a refrigeration loop;
when the outdoor temperature T0 is greater than the set temperature T1 and less than or equal to the set temperature T2, the room needs to supply heat, and the machine room air conditioner needs to supply cold, namely, the room air conditioning system needs to operate a heating mode, the machine room air conditioning system needs to perform a coupling mode, at the moment, the cooling valve is closed, the heat pipe valve is opened, the machine room throttling device is opened, the bypass valve is closed, and the machine room air conditioning system forms a loop by a machine room compressor, a cooling condenser, a machine room throttling device, an air distribution liquid storage device, a liquid pump, a machine room evaporator, a condensation evaporator and a heat; the room air-conditioning system comprises a room compressor, a four-way valve, an outdoor heat exchanger, a second throttling device, a condensing evaporator, a first throttling device and an indoor heat exchanger to form a heating loop;
when the outdoor temperature T0 is greater than the set temperature T1 and less than or equal to the set temperature T2, the room does not need to supply heat, the machine room air conditioner needs to supply cold, namely, the room air conditioning system does not run, the machine room air conditioner needs to perform a coupling mode, at the moment, the refrigerating valve is closed, the heat pipe valve is opened, the machine room throttling device is opened, the bypass valve is closed, and the machine room air conditioning system forms a loop by a machine room compressor, a refrigerating condenser, a machine room throttling device, an air distribution liquid storage device, a liquid pump, a machine room evaporator, a condensing evaporator and a;
when the outdoor temperature T0 is less than or equal to the set temperature T1, the room needs to be heated, and the machine room air conditioner needs to be cooled, namely the room air conditioning system needs to operate a heating mode, the machine room air conditioner needs to perform a liquid phase heat pipe mode, at the moment, the refrigerating valve is closed, the heat pipe valve is opened, the bypass valve is closed, and the machine room air conditioning system forms a loop by the air-separating liquid reservoir, the liquid pump, the machine room evaporator, the condensing evaporator and the heat pipe condenser; the room air conditioning system comprises a room compressor, a four-way valve, an indoor heat exchanger, a first throttling device, a condensing evaporator, a second throttling device and an outdoor heat exchanger to form a hot water loop.
The invention has the beneficial effects that: according to the invention, the room air conditioning system and the machine room air conditioning system are integrated, different working modes can be switched and operated according to the outdoor environment temperature, the machine room can be efficiently refrigerated, the machine room heat recovery can be efficiently heated all the year round, the outdoor natural cold source and the machine room heat are fully utilized, and the energy-saving and emission-reducing effects are excellent.
Drawings
Fig. 1 is a structural view of a combined air conditioning system for a machine room and a room of the present invention;
FIG. 2 is a schematic view of the cycle of the cooling + cooling mode of the present invention;
FIG. 3 is a schematic diagram of the cycle of the coupled + heating mode of the present invention;
FIG. 4 is a schematic diagram of the coupling + off mode cycle of the present invention;
fig. 5 is a cycle structure diagram of the heat pipe + heating mode in the present invention.
Detailed Description
The invention will be further explained with reference to the drawings.
Referring to fig. 1, the combined air conditioning system for a machine room and a room of the present invention includes a machine room compressor 1, a refrigeration condenser 2, a machine room throttling device 3, an air-separating reservoir 4, a liquid pump 5, a machine room evaporator 6, a heat pipe valve 7, a heat pipe condenser 8, a refrigeration valve 9, a condensation evaporator 10, a room compressor 11, a four-way valve 12, an indoor heat exchanger 13, a first throttling device 14, a second throttling device 15, an outdoor heat exchanger 16, and a bypass valve 17.
The inlet of the refrigeration condenser 2 is communicated with the outlet of the machine room compressor 1; the outlet of the refrigeration condenser 2 is communicated with the inlet of the machine room throttling device 3; the air distribution liquid storage device 4 is respectively communicated with the inlet of the machine room compressor 1, the outlet of the heat pipe condenser 8, the outlet of the machine room throttling device 3 and the inlet of the liquid pump 5.
The outlet of the liquid pump 5 is communicated with the inlet of the machine room evaporator 6; a first interface of the condensation evaporator 10 is communicated with an outlet of the machine room evaporator 6 through the heat pipe valve 7, a second interface is communicated with an inlet of the heat pipe condenser 8, a third interface is communicated with a first end of the outdoor heat exchanger 16 through a second throttling device 15, and a fourth interface is communicated with a first end of the indoor heat exchanger 13 through a first throttling device 14;
two ends of the refrigerating valve 9 are respectively communicated with an outlet of the machine room evaporator 6 and an outlet of the heat pipe condenser 8; four ports of the four-way valve 12 are respectively communicated with two ends of the room compressor 11, a second end of the outdoor heat exchanger 16 and a second end of the indoor heat exchanger 13; one end of the bypass valve 17 is communicated with the first end of the outdoor heat exchanger 16, and the other end of the bypass valve passes through the fourth port of the condensing evaporator 10.
The refrigeration condenser 2 is a water-cooled condenser, an air-cooled condenser or an evaporative condenser.
The control method of the combined air conditioning system for the machine room and the room respectively switches different loops to operate different working modes according to different outdoor environment temperatures, different seasons, cold supply requirements and heat supply requirements.
When the outdoor temperature is summer (the outdoor temperature T0 is more than the set temperature T2), the machine room air conditioner needs cooling, the room air conditioning system needs cooling, namely the machine room air conditioning system operates in a refrigeration mode, and the room air conditioning system operates in a refrigeration mode, as shown in FIG. 2, at the moment, a refrigeration valve 9 is opened, a heat pipe valve 7 is closed, a machine room throttling device 3 is opened, a bypass valve 17 is opened, and the machine room air conditioning system is formed into a loop by a machine room compressor 1, a refrigeration condenser 2, a machine room throttling device 3, an air distribution liquid storage device 4, a liquid pump 5 and a machine room evaporator 6; and the rotating speed of the compressor, the opening of the expansion valve and the rotating speed of the condenser fan are determined according to the indoor load and the outdoor temperature, so that the cold quantity regulation is realized. The room air conditioning system is a refrigeration circuit composed of a room compressor 11, a four-way valve 12, an indoor heat exchanger 13, a first throttle device 14, a bypass valve 17, and an outdoor heat exchanger 16. At the moment, the room air conditioning system and the machine room air conditioning system work and refrigerate independently.
When in spring and autumn transition outdoors (the outdoor temperature T0 is greater than the set temperature T1 and less than or equal to the set temperature T2), the room needs to supply heat, the machine room air conditioner needs to supply cold, namely, the room air conditioning system needs to operate a heating mode, and the machine room air conditioning system needs to perform a coupling mode, as shown in FIG. 3, at this time, the cooling valve 9 is closed, the heat pipe valve 7 is opened, the machine room throttling device 3 is opened, the bypass valve 17 is closed, and the machine room air conditioning system forms a loop by the machine room compressor 1, the cooling condenser 2, the machine room throttling device 3, the air distribution liquid reservoir 4, the liquid pump 5, the machine room evaporator 6, the condensation evaporator 10 and the heat; the refrigerant in the machine room is preferentially condensed by utilizing the room heating principle, and then the heat pipe condenser is used for dissipating heat, so that the defects are compensated by the compressor; and the rotating speed of the compressor and the rotating speed of the condenser fan are determined according to the indoor load and the outdoor temperature, so that the accurate adjustment of the cooling capacity is realized. The room air conditioning system comprises a room compressor (11), a four-way valve (12), an outdoor heat exchanger (16), a second throttling device (15), a condensing evaporator (10), a first throttling device (14) and an indoor heat exchanger (13) to form a heating loop; the room is heated by the heat of the machine room preferentially, and the room is heated by the operation heating mode when the room is insufficient.
When the outdoor is in spring and autumn transition (the outdoor temperature T0 is greater than the set temperature T1 and less than or equal to the set temperature T2), the room does not need to supply heat, the machine room air conditioner needs to supply cold, namely, the room air conditioning system does not operate, and the machine room air conditioner needs to perform a coupling mode, as shown in fig. 4, at this time, the refrigeration valve 9 is closed, the heat pipe valve 7 is opened, the machine room throttling device 3 is opened, the bypass valve 17 is closed, and the machine room air conditioning system is formed into a loop by the machine room compressor 1, the refrigeration condenser 2, the machine room throttling device 3, the air distribution liquid reservoir 4, the liquid pump 5, the machine room evaporator 6, the. And the rotating speed of the compressor and the rotating speed of the condenser fan are determined according to the indoor load and the outdoor temperature, so that the accurate adjustment of the cooling capacity is realized.
When the outdoor temperature is not higher than the set temperature T1 in winter (the outdoor temperature T0 is not higher than the set temperature T1), the room needs to supply heat, and the machine room air conditioner needs to supply cold, namely, the room air conditioning system needs to operate in a heating mode, and the machine room air conditioner needs to perform a liquid-phase heat pipe mode, as shown in FIG. 5, the cooling valve 9 is closed, the heat pipe valve 7 is opened, the bypass valve 17 is closed, and the machine room air conditioning system forms a loop by the air-separating liquid reservoir 4, the liquid pump 5, the machine room evaporator 6, the condensing. The rotating speeds of a liquid pump and a condenser fan are determined according to the indoor load and the outdoor temperature, so that the accurate adjustment of cold quantity is realized, the working pressure (temperature) of a heat pipe is controlled, and the heat exchange capacity of the heat pipe is adjusted in the following specific mode: when the outdoor environment temperature rises or the indoor load increases, the rotating speed of the fan is increased; and when the outdoor temperature is reduced or the indoor load is reduced, reducing the rotating speed of the fan. The room air conditioning system comprises a room compressor 11, a four-way valve 12, an indoor heat exchanger 13, a first throttling device 14, a condensing evaporator 10, a second throttling device 15 and an outdoor heat exchanger 16 to form a hot water loop, and preferentially heats rooms through heat of a machine room, and heats the rooms through a heating mode in case of deficiency.
The above embodiments are provided only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and therefore all equivalent technical solutions should also fall within the scope of the present invention, and should be defined by the claims.
Claims (3)
1. A combined air conditioning system for a machine room and a room comprises a machine room compressor (1), a refrigeration condenser (2), a machine room throttling device (3), a liquid pump (5), a machine room evaporator (6), a hot pipe valve (7), a heat pipe condenser (8), a refrigeration valve (9), a room compressor (11), a four-way valve (12), an indoor heat exchanger (13), a first throttling device (14), an outdoor heat exchanger (16) and a bypass valve (17), and is characterized by further comprising a gas distribution liquid storage device (4), a condensation evaporator (10) and a second throttling device (15), wherein,
the inlet of the refrigeration condenser (2) is communicated with the outlet of the machine room compressor (1); the outlet of the refrigeration condenser (2) is communicated with the inlet of the machine room throttling device (3);
the air distribution liquid storage device (4) is respectively communicated with an inlet of the machine room compressor (1), an outlet of the heat pipe condenser (8), an outlet of the machine room throttling device (3) and an inlet of the liquid pump (5);
the outlet of the liquid pump (5) is communicated with the inlet of the machine room evaporator (6);
a first interface of the condensation evaporator (10) is communicated with an outlet of the machine room evaporator (6) through the heat pipe valve (7), a second interface is communicated with an inlet of the heat pipe condenser (8), a third interface is communicated with a first end of the outdoor heat exchanger (16) through a second throttling device (15), and a fourth interface is communicated with a first end of the indoor heat exchanger (13) through a first throttling device (14);
two ends of the refrigerating valve (9) are respectively communicated with an outlet of the machine room evaporator (6) and an outlet of the heat pipe condenser (8);
four ports of the four-way valve (12) are respectively communicated with two ends of the room compressor (11), a second end of the outdoor heat exchanger (16) and a second end of the indoor heat exchanger (13);
one end of the bypass valve (17) is communicated with the first end of the outdoor heat exchanger (16), and the other end of the bypass valve passes through a fourth interface of the condensation evaporator (10).
2. Combined air conditioning system for machine rooms and rooms according to claim 1, characterized in that the refrigerated condenser (2) is a water-cooled condenser, an air-cooled condenser or an evaporative condenser.
3. A control method for a combined air conditioning system for rooms and rooms according to claim 1,
when the outdoor temperature T0 is greater than the set temperature T2, the machine room air conditioner needs to supply cold, the room air conditioning system needs to supply cold, namely, the machine room air conditioning system operates in a refrigeration mode, the refrigeration valve (9) is opened at the moment, the heat pipe valve (7) is closed, the machine room throttling device (3) is opened, the bypass valve (17) is opened, and the machine room air conditioning system forms a loop by the machine room compressor (1), the refrigeration condenser (2), the machine room throttling device (3), the air distribution liquid storage device (4), the liquid pump (5) and the machine room evaporator (6); the room air conditioning system comprises a refrigeration loop consisting of a room compressor (11), a four-way valve (12), an indoor heat exchanger (13), a first throttling device (14), a bypass valve (17) and an outdoor heat exchanger (16);
when the outdoor temperature T0 is greater than the set temperature T1 and less than or equal to the set temperature T2, a room needs to supply heat, a machine room air conditioner needs to supply cold, namely, the room air conditioning system needs to operate a heating mode, the machine room air conditioning system needs to perform a coupling mode, a refrigerating valve (9) is closed at the moment, a hot pipe valve (7) is opened, a machine room throttling device (3) is opened, a bypass valve (17) is closed, and the machine room air conditioning system forms a loop by a machine room compressor (1), a refrigerating condenser (2), a machine room throttling device (3), a gas distribution liquid storage device (4), a liquid pump (5), a machine room evaporator (6), a condensing evaporator (10) and a heat pipe condenser (8; the room air conditioning system comprises a room compressor (11), a four-way valve (12), an outdoor heat exchanger (16), a second throttling device (15), a condensing evaporator (10), a first throttling device (14) and an indoor heat exchanger (13) to form a heating loop;
when the outdoor temperature T0 is greater than the set temperature T1 and less than or equal to the set temperature T2, a room does not need to supply heat, a machine room air conditioner needs to supply cold, namely, the room air conditioning system does not run, the machine room air conditioner needs to perform a coupling mode, at the moment, the refrigerating valve (9) is closed, the hot pipe valve (7) is opened, the machine room throttling device (3) is opened, the bypass valve (17) is closed, and the machine room air conditioning system forms a loop by the machine room compressor (1), the refrigerating condenser (2), the machine room throttling device (3), the air distribution liquid storage device (4), the liquid pump (5), the machine room evaporator (6), the condensing evaporator (10) and the heat pipe;
when the outdoor temperature T0 is less than or equal to the set temperature T1, the room needs to supply heat, the machine room air conditioner needs to supply cold, namely, the room air conditioning system needs to operate a heating mode, the machine room air conditioner needs to perform a liquid-phase heat pipe mode, the cooling valve (9) is closed, the heat pipe valve (7) is opened, the bypass valve (17) is closed, and the machine room air conditioning system forms a loop by the air distribution liquid storage device (4), the liquid pump (5), the machine room evaporator (6), the condensation evaporator (10) and the heat pipe condenser (8); the room air conditioning system comprises a room compressor (11), a four-way valve (12), an indoor heat exchanger (13), a first throttling device (14), a condensation evaporator (10), a second throttling device (15) and an outdoor heat exchanger (16) to form a hot water loop.
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| CN113776138A (en) * | 2020-06-10 | 2021-12-10 | 鸿富锦精密电子(天津)有限公司 | Refrigerating and heating energy-saving system and method for saving energy by applying same |
| CN113970140A (en) * | 2020-07-24 | 2022-01-25 | 中国移动通信集团浙江有限公司 | Machine room air conditioning system and control method and controller thereof |
| CN115235140B (en) * | 2022-06-23 | 2023-08-01 | 宁波奥克斯电气股份有限公司 | Multi-split air conditioning system, control method and storage medium |
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