CN116928762A - Machine room air conditioner and operation control method and device thereof - Google Patents
Machine room air conditioner and operation control method and device thereof Download PDFInfo
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- CN116928762A CN116928762A CN202210348870.2A CN202210348870A CN116928762A CN 116928762 A CN116928762 A CN 116928762A CN 202210348870 A CN202210348870 A CN 202210348870A CN 116928762 A CN116928762 A CN 116928762A
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000001816 cooling Methods 0.000 claims abstract description 226
- 239000003507 refrigerant Substances 0.000 claims abstract description 64
- 238000005057 refrigeration Methods 0.000 claims abstract description 57
- 238000009826 distribution Methods 0.000 claims description 34
- 230000005494 condensation Effects 0.000 claims description 23
- 238000009833 condensation Methods 0.000 claims description 23
- 239000007788 liquid Substances 0.000 claims description 12
- 239000002131 composite material Substances 0.000 claims description 11
- 238000001704 evaporation Methods 0.000 claims description 11
- 230000008020 evaporation Effects 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 230000001276 controlling effect Effects 0.000 abstract description 43
- 230000000694 effects Effects 0.000 abstract description 10
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 230000004075 alteration Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
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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
-
- 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
- F24F11/64—Electronic processing using pre-stored data
-
- 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
- F24F11/67—Switching between heating and cooling modes
-
- 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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
-
- 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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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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
-
- 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
-
- 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
-
- 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
- H05K7/20836—Thermal management, e.g. server temperature control
-
- 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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Combustion & Propulsion (AREA)
- Chemical & Material Sciences (AREA)
- Signal Processing (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The embodiment of the application provides a machine room air conditioner, an operation control method and an operation control device thereof, wherein the machine room air conditioner comprises a refrigeration module and a cold supply module, and the refrigerating module is used for adjusting the refrigerating output of the refrigeration module by controlling the operation speed of a compressor; in the cooling module, a natural cooling condenser is arranged between an inlet and an outlet of a condensing channel of the heat exchanger, and the cooling rate of the refrigerant flowing into the natural cooling condenser and the condensing channel of the heat exchanger is regulated by controlling the running speed of the natural cooling condenser, so that the cooling rate of the natural cooling condenser and the cooling rate of the condensing channel of the heat exchanger can be reasonably distributed, and the refrigerating effect of the air conditioner of a machine room is improved.
Description
Technical Field
The application relates to the technical field of air conditioners, in particular to a machine room air conditioner, an operation control method and an operation control device thereof.
Background
In recent years, with rapid development of a data machine room, particularly with mass use of high heat density equipment, a cabinet server in the data machine room generates large heat and needs to be cooled all the year round, and in order to reduce energy consumption, a large-scale air conditioning system of a data center adopts a composite refrigeration system, which generally comprises a mechanical refrigeration system and a natural refrigeration system, wherein the mechanical refrigeration system utilizes a cold source provided by a compressor to perform refrigeration, and the natural refrigeration system utilizes a natural cold source to perform refrigeration.
However, in the current composite refrigeration system, during mechanical refrigeration, the refrigerant is used for mechanical refrigeration, during natural cooling refrigeration, the refrigerant is used for natural cooling refrigeration, but sometimes, the refrigerant is not required to be used for mechanical refrigeration or natural cooling refrigeration, i.e. the distribution of the refrigerant is unreasonable, that is, the refrigeration effect of the existing composite refrigeration system is poor.
How to improve the refrigerating effect of the machine room air conditioner with the composite refrigerating system is a problem to be solved by the person skilled in the art.
Disclosure of Invention
The application provides a machine room air conditioner, an operation control method and an operation control device thereof, which are used for improving the refrigerating effect of the machine room air conditioner.
In a first aspect, an embodiment of the present application provides a machine room air conditioner, including: a refrigeration module and a cooling module;
the refrigerating module consists of a compressor, a condenser, a refrigerating valve and an evaporation channel of a heat exchanger which are sequentially connected, wherein a high-pressure exhaust port of the compressor is connected with an inlet of the condenser, and a low-pressure air suction port of the compressor is connected with an outlet of the evaporation channel; controlling the running speed of the compressor to adjust the refrigerating capacity of the refrigerating module;
the cooling module comprises a natural cooling condenser and a loop formed by a refrigerant pump, a machine room evaporator, a condensing channel of a heat exchanger and a liquid reservoir which are sequentially connected, wherein an outlet of the machine room evaporator is connected with an inlet of the condensing channel, an inlet of the machine room evaporator is connected with an outlet of the refrigerant pump, and the natural cooling condenser is arranged between the inlet of the condensing channel and the outlet of the condensing channel; and adjusting the cooling capacity ratio of the refrigerant flowing into the natural cooling condenser and the condensing channel by controlling the running speed of the natural cooling condenser so as to adjust the cooling capacity of the cooling module.
In one possible implementation manner, the system further comprises a first temperature sensor arranged at a wind side inlet of the natural cooling condenser and a second temperature sensor arranged at a wind side inlet of the machine room evaporator;
the first temperature sensor is used for acquiring outdoor temperature, and the second temperature sensor is used for acquiring indoor temperature.
In one possible implementation manner, a plurality of machine room evaporators are arranged in parallel.
In one possible implementation, the refrigeration module further includes a first check valve and a second check valve;
the first one-way valve is connected to a pipeline between the condensation channel and the liquid reservoir;
the second one-way valve is connected to a pipeline between the natural cooling condenser and the liquid reservoir.
In one possible implementation, the device further comprises a three-way distribution valve;
the three-way distribution valve is connected with the machine room evaporator, the condensation channel and the natural cooling condenser, wherein the opening of the three-way distribution valve is adjustable.
In a second aspect, an embodiment of the present application further provides a method for controlling operation of a machine room air conditioner, which is applied to any one of the machine room air conditioners in the first aspect, where the method includes:
acquiring indoor temperature and outdoor temperature;
and controlling the running speed of the compressor according to the indoor temperature and the outdoor temperature so as to adjust the refrigerating capacity of the refrigerating module, controlling the running speed of the natural cooling condenser, and adjusting the cooling capacity proportion of the refrigerant flowing into the natural cooling condenser and the condensing channel so as to adjust the cooling capacity of the cooling module.
In one possible implementation manner, if it is determined that the difference between the indoor temperature and the outdoor temperature is greater than or equal to a first preset value, then:
and controlling the refrigerant pump to operate and controlling the natural cooling condenser to operate at full speed so as to enable the cooling capacity proportion to be a set proportion, and enabling the air conditioner of the machine room to operate in a natural cooling refrigeration mode.
In one possible implementation, if it is determined that the difference between the indoor temperature and the outdoor temperature is less than a first preset value, then:
and controlling the refrigerant pump to run and controlling the compressor to run at full speed so as to enable the air conditioner of the machine room to run in a mechanical refrigeration mode.
In one possible implementation manner, if it is determined that the outdoor temperature is reduced, it is determined whether the difference between the indoor temperature and the outdoor temperature is greater than or equal to a second preset value, if yes, then:
and controlling the natural cooling condenser to operate, reducing the operation speed of the compressor so as to increase the cooling capacity proportion, and operating the machine room air conditioner in a composite refrigeration mode.
In one possible implementation, the reducing the operation speed of the compressor includes:
and reducing the running speed of the compressor according to the ratio relation between the difference value of the indoor temperature, the outdoor temperature and the second preset value and the difference value of the first preset value and the second preset value.
In one possible implementation manner, if it is determined that the outdoor temperature is reduced, it is determined whether a difference between the indoor temperature and the outdoor temperature is greater than or equal to a first preset value, and if so, then:
and controlling the natural cooling condenser to run at full speed, and controlling the compressor to be closed so as to enable the cooling capacity proportion to be a set proportion, and enabling the air conditioner of the machine room to run in a natural cooling mode.
In a third aspect, an embodiment of the present application further provides an operation control device of a machine room air conditioner, applied to the machine room air conditioner according to any one of the first aspect, where the device includes:
an acquisition unit configured to acquire an indoor temperature and an outdoor temperature;
and the control unit is used for controlling the running speed of the compressor according to the indoor temperature and the outdoor temperature so as to adjust the cold production of the refrigerating module, controlling the running speed of the natural cooling condenser and adjusting the cold supply proportion of the refrigerant flowing into the natural cooling condenser and the condensing channel so as to adjust the cold supply of the cold supply module.
In one possible implementation manner, if it is determined that the difference between the indoor temperature and the outdoor temperature is greater than or equal to a first preset value, then:
the control unit is specifically configured to:
and controlling the refrigerant pump to operate and controlling the natural cooling condenser to operate at full speed so as to enable the cooling capacity proportion to be a set proportion, and enabling the air conditioner of the machine room to operate in a natural cooling refrigeration mode.
In one possible implementation, if it is determined that the difference between the indoor temperature and the outdoor temperature is less than a first preset value, then:
the control unit is specifically configured to:
and controlling the refrigerant pump to run and controlling the compressor to run at full speed so as to enable the air conditioner of the machine room to run in a mechanical refrigeration mode.
In one possible implementation manner, if it is determined that the outdoor temperature is reduced, it is determined whether a difference between the indoor temperature and the outdoor temperature is greater than or equal to a second preset value, and if yes, the control unit is specifically configured to:
and controlling the natural cooling condenser to operate, reducing the operation speed of the compressor so as to increase the cooling capacity proportion, and operating the machine room air conditioner in a composite refrigeration mode.
In a possible implementation manner, the control unit is specifically configured to:
and reducing the running speed of the compressor according to the ratio relation between the difference value of the indoor temperature, the outdoor temperature and the second preset value and the difference value of the first preset value and the second preset value.
In one possible implementation manner, if it is determined that the outdoor temperature is reduced, it is determined whether a difference between the indoor temperature and the outdoor temperature is greater than or equal to a first preset value, and if yes, the control unit is specifically configured to:
and controlling the natural cooling condenser to run at full speed, and controlling the compressor to be closed so as to enable the cooling capacity proportion to be a set proportion, and enabling the air conditioner of the machine room to run in a natural cooling mode.
The embodiment of the application has the following beneficial effects:
the embodiment of the application provides a machine room air conditioner, an operation control method and an operation control device thereof, wherein the machine room air conditioner comprises: a refrigeration module and a cooling module; the refrigerating module consists of a compressor, a condenser, a refrigerating valve and an evaporation channel of a heat exchanger which are sequentially connected, a high-pressure exhaust port of the compressor is connected with an inlet of the condenser, and a low-pressure air suction port of the compressor is connected with an outlet of the evaporation channel; the refrigerating capacity of the refrigerating module is regulated by controlling the running speed of the compressor; the cooling module comprises a natural cooling condenser and a loop formed by a refrigerant pump, a machine room evaporator, a condensing channel of a heat exchanger and a liquid reservoir which are sequentially connected, wherein an outlet of the machine room evaporator is connected with an inlet of the condensing channel, an inlet of the machine room evaporator is connected with an outlet of the refrigerant pump, and the natural cooling condenser is arranged between the inlet of the condensing channel and the outlet of the condensing channel; the cooling capacity of the cooling module is adjusted by controlling the running speed of the natural cooling condenser and adjusting the cooling capacity proportion of the refrigerant flowing into the natural cooling condenser and the condensing channel. The cooling capacity ratio of the refrigerant flowing into the natural cooling condenser and the condensing channel can be adjusted by controlling the running speed of the natural cooling condenser, so that the cooling capacity of the condensing channel of the natural cooling condenser and the condensing channel of the heat exchanger can be reasonably distributed, and the refrigerating effect of the air conditioner of the machine room is further improved.
Drawings
In order to more clearly illustrate the technical solutions of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an air conditioner in a machine room according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of another air conditioner in a machine room according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of another air conditioner in a machine room according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of another air conditioner in a machine room according to an embodiment of the present application;
fig. 5 is a schematic flow chart of a method for controlling operation of an air conditioner in a machine room according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of an operation control device for an air conditioner in a machine room according to an embodiment of the present application.
Icon:
1-a refrigeration module; 2-a cooling module; 101-a refrigerant pump; 102-a machine room evaporator; 103-a heat exchanger; 1031-evaporation channels; 1032—a condensing channel; 104-a reservoir; 105-compressor; 106-a condenser; 107-a refrigeration valve; 201-a natural cooling condenser; 301-a first temperature sensor; 302-a second temperature sensor; 401-a first one-way valve; 402-a second one-way valve; 501-three-way dispensing valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the application, fall within the scope of protection of the application.
The data center machine room needs to be refrigerated all the year round, so that the machine room is maintained at a stable temperature all the year round, and stable operation of the machine room equipment is ensured. In winter, natural cold sources can be used as a natural resource in an air conditioning system so as to reduce the energy consumption of the air conditioning system, and natural cold sources can be utilized by a natural cold condenser to provide cold for the air conditioner, so that at present, most data centers adopt a composite system which runs in two modes of mechanical refrigeration or natural cold refrigeration when the air conditioner runs.
The embodiment of the application provides a machine room air conditioner, as shown in fig. 1, comprising: a refrigeration module 1 and a cooling module 2;
the refrigeration module 1 is composed of a compressor 105, a condenser 106, a refrigeration valve 107 and an evaporation channel 1031 of the heat exchanger 103 which are sequentially connected, wherein a high-pressure exhaust port of the compressor 105 is connected with an inlet of the condenser 106, and a low-pressure air suction port of the compressor 105 is connected with an outlet of the evaporation channel 1031; by controlling the operation speed of the compressor 105, the refrigeration capacity of the refrigeration module is adjusted;
the cooling module 2 comprises a natural cooling condenser 201, and a loop formed by a refrigerant pump 101, a machine room evaporator 102, a condensing channel 1032 of a heat exchanger 103 and a liquid reservoir 104 which are sequentially connected, wherein an outlet of the machine room evaporator 102 is connected with an inlet of the condensing channel 1032, an inlet of the machine room evaporator 102 is connected with an outlet of the refrigerant pump 101, and the natural cooling condenser 201 is arranged between the inlet of the condensing channel 1032 and the outlet of the condensing channel 1032; by controlling the operation speed of the natural cooling condenser 201, the ratio of the cooling amount of the refrigerant flowing into the natural cooling condenser 201 and the condensation passage 1032 is adjusted to adjust the cooling amount of the cooling module 2.
The machine room air conditioner provided by the embodiment of the application comprises a refrigeration module 1 and a cooling module 2, wherein the refrigerating module 1 controls the running speed of a compressor 105 to adjust the refrigerating capacity of the refrigeration module 1; in the cooling module 2, the natural cooling condenser 201 is disposed between the inlet and the outlet of the condensation channel 1032 of the heat exchanger 103, and the cooling rate of the refrigerant flowing into the natural cooling condenser 201 and the condensation channel 1032 of the heat exchanger 103 is adjusted by controlling the operation speed of the natural cooling condenser 201, so that the cooling rate of the natural cooling condenser 201 and the cooling rate of the condensation channel 1032 of the heat exchanger 103 can be reasonably distributed, and the cooling effect of the air conditioner in the machine room is further improved.
In a specific implementation, the machine room air conditioner provided by the embodiment of the application further includes a first temperature sensor 301 disposed at a wind side inlet of the natural cooling condenser 201 and a second temperature sensor 302 disposed at a wind side inlet of the machine room evaporator 102;
the first temperature sensor 301 is used to obtain the outdoor temperature Tout at the wind side inlet of the natural cooling condenser 201, and the second temperature sensor 302 is used to obtain the indoor temperature Tin at the wind side inlet of the machine room evaporator 102.
The condenser 106 provided by the embodiment of the application can be in various forms such as a condensing water tower or a coil pipe condenser; the heat exchanger 103 can be a shell-and-tube heat exchanger or a format heat exchanger and the like; the natural cooling condenser 201 utilizes natural cooling resources in a variety of ways including, but not limited to: cooling water towers, fan coils, water sprays and the like.
The heat supply ratio distribution of the refrigerant in the condensation channel 1032 of the heat exchanger 103 and the natural cooling condenser 201 provided in the embodiment of the present application may be implemented in different ways:
in the first embodiment, as shown in fig. 1, the heat exchanger 103 and the natural cooling condenser 201 are disposed at the same horizontal position, and the refrigerant is self-distributed by the condensing pressure:
for example, in the case where the natural cooling condenser 201 is operated at full speed and the compressor 105 is not operated, the room air conditioner is operated in the natural cooling mode, the gaseous refrigerant evaporated by the room evaporator 102 is condensed at a very low pressure at the position of the natural cooling condenser 201, the condensing pressures at the positions of the natural cooling condenser 201 and the condensing channels 1032 of the heat exchanger 103 are approximately 1:0, and the refrigerant flows to the natural cooling condenser 201 entirely;
for another example, in the case where the natural cooling condenser 201 is not operated and the compressor 105 is operated at full speed, the machine room air conditioner is operated in the mechanical refrigeration mode, and the gaseous refrigerant evaporated by the machine room evaporator 102 flows to the condensation channels 1032 of the heat exchanger 103 due to the extremely high condensation pressure at the position of the natural cooling condenser 201, and the condensation pressure at the positions of the natural cooling condenser 201 and the condensation channels 1032 of the heat exchanger 103 is approximately 0:1;
for another example, in the case where the natural cooling condenser 201 and the compressor 105 are simultaneously operated (neither of them is at full speed), the machine room air conditioner operates in the combined cooling mode, and the gaseous refrigerant evaporated by the machine room evaporator 102 automatically distributes the flow direction of the refrigerant according to the ratio of the condensing pressures at the positions of the condensing channels 1032 of the natural cooling condenser 201 and the heat exchanger 103, and if the ratio of the condensing pressures at a certain time is 1:2, the refrigerant automatically flows to the natural cooling condenser 201 and the refrigerant at the positions of the condensing channels 1032 of the heat exchanger 103 according to the ratio of the condensing pressures, and the ratio of the cooling capacities of the refrigerant is 2:1.
It should be noted that, since the natural cooling condenser 201 needs to dissipate heat when condensing the refrigerant, the gaseous refrigerant is liquefied, and the pressure is reduced, by controlling the operation speed of the natural cooling condenser 201, the condensation pressure at the position of the natural cooling condenser 201 can be changed.
The machine room air conditioner provided by the embodiment of the application adjusts the ratio of the cooling capacity of the refrigerant flowing into the natural cooling condenser 201 and the condensing channel 1032 of the heat exchanger 103 by controlling the running speed of the natural cooling condenser 201, so that the cooling capacity of the natural cooling condenser 201 and the condensing channel 1032 of the heat exchanger 103 can be reasonably distributed, and the refrigerating effect of the machine room air conditioner is further improved.
In the second mode, as shown in fig. 2, if the heat exchanger 103 and the natural cooling condenser 201 are disposed at different horizontal positions, the distribution of the refrigerant flow direction can be performed by providing corresponding three-way distribution valves:
the three-way distribution valve 501 is connected with the machine room evaporator 102, the heat exchanger 103 and the natural cooling condenser 201, wherein the opening degree of the three-way distribution valve 501 is adjustable.
For example, in the case where the natural cooling condenser 201 is operated at full speed and the compressor 105 is not operated, the room air conditioner is operated in the natural cooling mode at this time, the passage connected to the room evaporator 102 and the passage connected to the natural cooling condenser 201 in the three-way distribution valve 501 are adjusted to be completely opened, and the refrigerant is entirely flowed to the natural cooling condenser 201;
as another example, in the case where the natural cooling condenser 201 is not operated and the compressor 105 is operated at full speed, at this time, the room air conditioner is operated in the mechanical cooling mode, the passage connected to the room evaporator 102 and the passage connected to the condensation passage 1032 of the heat exchanger 103 in the three-way distribution valve 501 are adjusted to be completely opened, and the refrigerant flows all to the condensation passage 1032 of the heat exchanger 103;
for another example, in the case where the natural cooling condenser 201 and the compressor 105 are simultaneously operated (neither of them is at full speed), at this time, the room air conditioner is operated in the combined cooling mode, the passage connected to the room evaporator 102 in the three-way distribution valve 501 is adjusted to be fully opened, the passage connected to the natural cooling condenser 201 and the passage connected to the condensation passage 1032 of the heat exchanger 103 in the three-way distribution valve 501 is adjusted to be partially opened, and the refrigerant flows to the natural cooling condenser 201 and the condensation passage 1032 of the heat exchanger 103, respectively, according to the opening degree of the three-way distribution valve 501.
Specifically, the degree of opening adjustment of the three-way distribution valve 501 may be adjusted according to the difference Tin-Tout between the indoor temperature and the outdoor temperature. If the difference Tin-Tout between the indoor temperature and the outdoor temperature is greater than or equal to the first preset value Ta, controlling the passage between the three-way distribution valve 501 and the machine room evaporator 102 and the passage between the three-way distribution valve 501 and the natural cooling condenser 201 to be completely opened; if it is determined that the difference Tin-Tout between the indoor temperature and the outdoor temperature is smaller than the first preset value Ta, the passage between the three-way distribution valve 501 and the machine room evaporator 102, and the passage between the three-way distribution valve 501 and the condensation channel 1032 of the heat exchanger 103 are controlled to be completely opened.
After the three-way distribution valve 501 and the machine room evaporator 102 and the three-way distribution valve 501 and the condensing channel 1032 of the heat exchanger 103 are controlled to be completely opened, if the outdoor temperature Tout is reduced, the three ways of the three-way distribution valve 501 are controlled to be opened, the opening degree is determined according to the ambient temperature, if the difference Tin-Tout between the indoor temperature and the outdoor temperature is greater than or equal to the second preset value Tb and less than the first preset value Ta, the opening degree of the three-way distribution valve 501 is controlled according to the ratio of (Tin-Tout-Tb)/(Ta-Tb), for example, if the ratio of (Tin-Tout-Tb)/(Ta-Tb) is 2/5, the ratio of the opening degrees of the passage between the three-way distribution valve 501 and the natural cooling condenser 201, the three-way distribution valve 501 and the condensing passage 1032 of the heat exchanger 103 is controlled to be 2/3, the ratio of the opening degrees of the passage between the three-way distribution valve 501 and the natural cooling condenser 201, the three-way distribution valve 501 and the condensing passage 1032 of the heat exchanger 103 is controlled to be 3/2 if the ratio of (Tin-Tout-Tb)/(Ta-Tb) is 3/5, and the ratio of the opening degrees of the passage between the three-way distribution valve 501 and the natural cooling condenser 201, the three-way distribution valve 501 and the condensing passage 1032 of the heat exchanger 103 is controlled to be 4/1 if the ratio of the opening degrees of the passage between the three-way distribution valve 501 and the condensing passage 1032 of the heat exchanger 103 is controlled to be 4/5.
In one embodiment, as shown in fig. 3, the machine room air conditioner provided in the embodiment of the present application may include a plurality of machine room evaporators 102, and illustrated by taking 2 machine room evaporators 102 as an example, the plurality of machine room evaporators 102 are arranged in parallel, and by arranging the plurality of machine room evaporators 102 in parallel, the cooling capacity can be increased, and the operation efficiency of the machine room air conditioner can be improved.
In one embodiment, the machine room air conditioner provided by the embodiment of the present application may further include a check valve, as shown in fig. 4, where the refrigeration module 2 further includes a first check valve 401 and a second check valve 402, the first check valve 401 is connected to a pipeline between the condensation channel 1032 of the heat exchanger 103 and the liquid storage 104, and the second check valve 402 is connected to a pipeline between the natural cooling condenser 201 and the liquid storage 104.
The one-way valve provided by the embodiment of the application has a one-way circulation function, and can ensure that the refrigerant flowing out of the condensation channel 1032 of the heat exchanger 103 or the natural cooling condenser 201 smoothly flows into the liquid reservoir 104, thereby ensuring that the air-conditioner operates stably.
Based on the same inventive concept, the embodiment of the application also provides a method for controlling the operation of the air conditioner in the machine room, which is applied to any one of the air conditioners in the machine room provided in the above technical scheme, as shown in fig. 5, and the method comprises:
s501, acquiring an indoor temperature and an outdoor temperature;
s502, controlling the running speed of the compressor according to the indoor temperature and the outdoor temperature to adjust the refrigerating capacity of the refrigerating module, controlling the running speed of the natural cooling condenser, and adjusting the cooling capacity proportion of the refrigerant flowing into the natural cooling condenser and the condensing channel to adjust the cooling capacity of the cooling module.
According to the operation control method of the machine room air conditioner, the operation speed of the compressor is controlled according to the indoor temperature and the outdoor temperature so as to adjust the refrigerating capacity of the refrigerating module, the operation speed of the natural cooling condenser is controlled, the proportion of the cooling capacity of the refrigerant flowing into the natural cooling condenser and the condensing channel is adjusted, and therefore the cooling capacity of the condensing channel of the natural cooling condenser and the condensing channel of the heat exchanger can be reasonably distributed, and the refrigerating effect of the machine room air conditioner is improved.
In a specific implementation, when the machine room air conditioner is started, firstly, the indoor temperature Tin and the outdoor temperature Tout are obtained, then, the difference value Tin-Tout between the indoor temperature and the outdoor temperature is judged, and different modes of operation of the machine room air conditioner are controlled according to the difference value.
Specifically, if it is determined that the difference Tin-Tout between the indoor temperature and the outdoor temperature is greater than or equal to the first preset value Ta, then: the refrigerant pump 101 is controlled to operate, and the natural cooling condenser 201 is controlled to operate at full speed, so that the cooling capacity ratio is a set ratio, for example, may be 1:0, and the machine room air conditioner operates in a natural cooling mode, wherein the first preset value Ta may be set according to the actual situation.
If the difference Tin-Tout between the indoor temperature and the outdoor temperature is smaller than the first preset value Ta, the method comprises the following steps: controlling the refrigerant pump 101 to operate and controlling the compressor 105 to operate at full speed so as to enable the machine room air conditioner to operate in a mechanical refrigeration mode; after the machine room air conditioner operates, if the outdoor temperature Tout is determined to be reduced, judging whether the difference value Tin-Tout between the indoor temperature and the outdoor temperature is larger than or equal to a second preset value Tb, wherein the second preset value Tb is smaller than the first preset value Ta, and if yes, then: the natural cooling condenser 201 is controlled to operate, at the moment of operation, the natural cooling condenser 201 can be controlled to operate at full speed to rapidly supply cold, after a preset period of time, the operating speed of the natural cooling condenser 201 can be reduced according to the indoor temperature and the outdoor temperature, the operating speed of the natural cooling condenser 201 can be increased step by step directly according to the indoor temperature and the outdoor temperature, the operating speed of the compressor 105 can be reduced, so that the cooling capacity proportion is increased, the machine room air conditioner operates in a composite refrigeration mode, and the flow direction distribution of the refrigerant is more reasonable because the cooling capacity proportion can be adjusted according to the difference value of the indoor temperature and the outdoor temperature, so that the natural cooling condenser and the compressor can be utilized in a balanced mode to the greatest extent, and the energy consumption is reduced while the cooling capacity is ensured.
In addition, if the outdoor temperature decreases to a large extent until the difference Tin-Tout between the indoor temperature and the outdoor temperature is greater than or equal to the first preset value Ta, the natural cooling condenser 201 is controlled to operate at full speed, and the compressor 105 is controlled to be turned off, so that the cooling capacity ratio is a set ratio, for example, may be 1:0, so that the machine room air conditioner operates in the natural cooling mode.
It should be noted that, in the embodiment of the present application, when the operation speed of the compressor 105 is reduced, the operation speed of the compressor is reduced according to the ratio relationship between the difference Tin-Tout-Tb between the indoor temperature Tin, the outdoor temperature Tout and the second preset value Tb and the difference Ta-Tb between the first preset value Ta and the second preset value Tb, specifically, the ratio of (Tin-Tout-Tb)/(Ta-Tb) is controlled according to the ratio of (Tin-Tout-Tb)/(Ta-Tb), so as to control the concentration ratio of the refrigerant flowing through the natural cooling condenser 201 and the heat exchanger 103, and improve the output ratio of the natural cooling condenser 201 relative to the compressor 105, that is, reduce the output ratio of the compressor 105 relative to the natural cooling condenser 201. For example, if the ratio of (Tin-Tout-Tb)/(Ta-Tb) is 1/5, the output ratio of the natural cooling condenser 201 is controlled to be 20%, the fan speed of the natural cooling condenser 201 is adjusted to be 20% of the full speed, and the output ratio of the compressor is reduced to 80% from the original full speed operation.
According to the operation control method for the machine room air conditioner, the operation speeds of the natural cooling condenser and the compressor are controlled according to the indoor temperature and the outdoor temperature, the cooling capacity proportion of the refrigerant flowing into the condensation channels of the natural cooling condenser and the heat exchanger is adjusted, the refrigeration mode of the machine room air conditioner can be continuously switched between a mechanical refrigeration mode, a composite refrigeration mode and a natural cooling mode, the cooling capacity of the condensation channels of the natural cooling condenser and the heat exchanger can be reasonably distributed, and the refrigeration effect of the machine room air conditioner is further improved.
Based on the same inventive concept, the embodiment of the application also provides an operation control device of the air conditioner in the machine room, the implementation of the device can be referred to the implementation of the method, and the repetition is omitted. As shown in fig. 6, the apparatus includes:
an acquisition unit 601 for acquiring an indoor temperature and an outdoor temperature;
and a control unit 602 for controlling an operation speed of the compressor according to the indoor temperature and the outdoor temperature to adjust a cooling capacity of the cooling module, and controlling an operation speed of the natural cooling condenser to adjust a cooling capacity ratio of the refrigerant flowing into the natural cooling condenser and the condensing channel to adjust a cooling capacity of the cooling module.
Optionally, if it is determined that the difference Tin-Tout between the indoor temperature and the outdoor temperature is greater than or equal to the first preset value Ta, then:
the control unit 602 is specifically configured to:
the refrigerant pump 101 is controlled to operate, and the natural cooling condenser 201 is controlled to operate at full speed, so that the cooling capacity ratio is set to be, for example, 1:0, and the machine room air conditioner operates in a natural cooling mode.
Optionally, if it is determined that the difference Tin-Tout between the indoor temperature and the outdoor temperature is smaller than the first preset value Ta, then:
the control unit 602 is specifically configured to:
the refrigerant pump 101 is controlled to operate, and the compressor 105 is controlled to operate at full speed, so that the machine room air conditioner operates in a mechanical refrigeration mode.
Optionally, if it is determined that the outdoor temperature is reduced, it is determined whether the difference Tin-Tout between the indoor temperature and the outdoor temperature is greater than or equal to the second preset value Tb, and if yes, the control unit 602 is specifically configured to:
the natural cooling condenser 201 is controlled to operate, and the operation speed of the compressor 105 is reduced, so that the cooling capacity proportion is increased, and the machine room air conditioner operates in a compound refrigeration mode.
Optionally, the control unit 602 is specifically configured to:
the operation speed of the compressor 105 is reduced according to the ratio relationship of the difference Tin-Tout-Tb between the indoor temperature, the outdoor temperature and the second preset value to the difference Ta-Tb between the first preset value and the second preset value.
Optionally, if it is determined that the outdoor temperature is reduced, determining whether the difference Tin-Tout between the indoor temperature and the outdoor temperature is greater than or equal to the first preset value Ta, if yes, then:
the control unit 602 is specifically configured to:
the natural cooling condenser 201 is controlled to run at full speed, and the compressor 105 is controlled to be turned off, so that the cooling capacity ratio is set to be, for example, 1:0, and the machine room air conditioner runs in a natural cooling mode.
The embodiment of the application provides a machine room air conditioner, an operation control method and an operation control device thereof, wherein the machine room air conditioner comprises: a refrigeration module and a cooling module; the refrigerating module consists of a compressor, a condenser, a refrigerating valve and an evaporation channel of a heat exchanger which are sequentially connected, a high-pressure exhaust port of the compressor is connected with an inlet of the condenser, and a low-pressure air suction port of the compressor is connected with an outlet of the evaporation channel; the refrigerating capacity of the refrigerating module is regulated by controlling the running speed of the compressor; the cooling module comprises a natural cooling condenser and a loop formed by a refrigerant pump, a machine room evaporator, a condensing channel of a heat exchanger and a liquid reservoir which are sequentially connected, wherein an outlet of the machine room evaporator is connected with an inlet of the condensing channel, an inlet of the machine room evaporator is connected with an outlet of the refrigerant pump, and the natural cooling condenser is arranged between the inlet of the condensing channel and the outlet of the condensing channel; the cooling capacity of the cooling module is adjusted by controlling the running speed of the natural cooling condenser and adjusting the cooling capacity proportion of the refrigerant flowing into the natural cooling condenser and the condensing channel. The cooling capacity ratio of the refrigerant flowing into the natural cooling condenser and the condensing channel can be adjusted by controlling the running speed of the natural cooling condenser, so that the cooling capacity of the condensing channel of the natural cooling condenser and the condensing channel of the heat exchanger can be reasonably distributed, and the refrigerating effect of the air conditioner of the machine room is further improved.
Various modifications and alterations of this application may be made by those skilled in the art without departing from the spirit and scope of this application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (17)
1. A computer lab air conditioner, characterized in that includes: a refrigeration module and a cooling module;
the refrigerating module consists of a compressor, a condenser, a refrigerating valve and an evaporation channel of a heat exchanger which are sequentially connected, wherein a high-pressure exhaust port of the compressor is connected with an inlet of the condenser, and a low-pressure air suction port of the compressor is connected with an outlet of the evaporation channel; controlling the running speed of the compressor to adjust the refrigerating capacity of the refrigerating module;
the cooling module comprises a natural cooling condenser and a loop formed by a refrigerant pump, a machine room evaporator, a condensing channel of a heat exchanger and a liquid reservoir which are sequentially connected, wherein an outlet of the machine room evaporator is connected with an inlet of the condensing channel, an inlet of the machine room evaporator is connected with an outlet of the refrigerant pump, and the natural cooling condenser is arranged between the inlet of the condensing channel and the outlet of the condensing channel; and adjusting the cooling capacity ratio of the refrigerant flowing into the natural cooling condenser and the condensing channel by controlling the running speed of the natural cooling condenser so as to adjust the cooling capacity of the cooling module.
2. The air conditioner of claim 1, further comprising a first temperature sensor disposed at a wind side inlet of the natural cooling condenser and a second temperature sensor disposed at a wind side inlet of the machine room evaporator;
the first temperature sensor is used for acquiring outdoor temperature, and the second temperature sensor is used for acquiring indoor temperature.
3. The air conditioner of claim 1, wherein the plurality of room evaporators are arranged in parallel.
4. The air conditioner of claim 1, wherein the refrigeration module further comprises a first check valve and a second check valve;
the first one-way valve is connected to a pipeline between the condensation channel and the liquid reservoir;
the second one-way valve is connected to a pipeline between the natural cooling condenser and the liquid reservoir.
5. The air conditioner of claim 1, further comprising a three-way distribution valve;
the three-way distribution valve is connected with the machine room evaporator, the condensation channel and the natural cooling condenser, wherein the opening of the three-way distribution valve is adjustable.
6. A method for controlling operation of a room air conditioner, which is applied to the room air conditioner as claimed in any one of claims 1 to 5, the method comprising:
acquiring indoor temperature and outdoor temperature;
and controlling the running speed of the compressor according to the indoor temperature and the outdoor temperature so as to adjust the refrigerating capacity of the refrigerating module, controlling the running speed of the natural cooling condenser, and adjusting the cooling capacity proportion of the refrigerant flowing into the natural cooling condenser and the condensing channel so as to adjust the cooling capacity of the cooling module.
7. The method of claim 6, wherein if it is determined that the difference between the indoor temperature and the outdoor temperature is greater than or equal to a first preset value:
and controlling the refrigerant pump to operate and controlling the natural cooling condenser to operate at full speed so as to enable the cooling capacity proportion to be a set proportion, and enabling the air conditioner of the machine room to operate in a natural cooling refrigeration mode.
8. The method of claim 6, wherein if it is determined that the difference between the indoor temperature and the outdoor temperature is less than a first preset value:
and controlling the refrigerant pump to run and controlling the compressor to run at full speed so as to enable the air conditioner of the machine room to run in a mechanical refrigeration mode.
9. The method of claim 8, wherein if it is determined that the outdoor temperature is reduced, determining whether the difference between the indoor temperature and the outdoor temperature is greater than or equal to a second preset value, if so:
and controlling the natural cooling condenser to operate, reducing the operation speed of the compressor so as to increase the cooling capacity proportion, and operating the machine room air conditioner in a composite refrigeration mode.
10. The method of claim 9, wherein said reducing the operating speed of said compressor comprises:
and reducing the running speed of the compressor according to the ratio relation between the difference value of the indoor temperature, the outdoor temperature and the second preset value and the difference value of the first preset value and the second preset value.
11. The method according to any one of claims 8 to 10, wherein if it is determined that the outdoor temperature is reduced, it is determined whether a difference between the indoor temperature and the outdoor temperature is equal to or greater than a first preset value, and if so:
and controlling the natural cooling condenser to run at full speed, and controlling the compressor to be closed so as to enable the cooling capacity proportion to be a set proportion, and enabling the air conditioner of the machine room to run in a natural cooling mode.
12. An operation control device for a machine room air conditioner, which is applied to the machine room air conditioner as claimed in any one of claims 1 to 5, the device comprising:
an acquisition unit configured to acquire an indoor temperature and an outdoor temperature;
and the control unit is used for controlling the running speed of the compressor according to the indoor temperature and the outdoor temperature so as to adjust the cold production of the refrigerating module, controlling the running speed of the natural cooling condenser and adjusting the cold supply proportion of the refrigerant flowing into the natural cooling condenser and the condensing channel so as to adjust the cold supply of the cold supply module.
13. The apparatus of claim 12, wherein if it is determined that the difference between the indoor temperature and the outdoor temperature is greater than or equal to a first preset value:
the control unit is specifically configured to:
and controlling the refrigerant pump to operate and controlling the natural cooling condenser to operate at full speed so as to enable the cooling capacity proportion to be a set proportion, and enabling the air conditioner of the machine room to operate in a natural cooling refrigeration mode.
14. The apparatus of claim 12, wherein if it is determined that the difference between the indoor temperature and the outdoor temperature is less than a first preset value:
the control unit is specifically configured to:
and controlling the refrigerant pump to run and controlling the compressor to run at full speed so as to enable the air conditioner of the machine room to run in a mechanical refrigeration mode.
15. The apparatus of claim 14, wherein if it is determined that the outdoor temperature is reduced, determining whether a difference between the indoor temperature and the outdoor temperature is greater than or equal to a second preset value, if so, the control unit is specifically configured to:
and controlling the natural cooling condenser to operate, reducing the operation speed of the compressor so as to increase the cooling capacity proportion, and operating the machine room air conditioner in a composite refrigeration mode.
16. The apparatus according to claim 15, wherein the control unit is specifically configured to:
and reducing the running speed of the compressor according to the ratio relation between the difference value of the indoor temperature, the outdoor temperature and the second preset value and the difference value of the first preset value and the second preset value.
17. The apparatus of claim 14, wherein if it is determined that the outdoor temperature is reduced, determining whether a difference between the indoor temperature and the outdoor temperature is greater than or equal to a first preset value, if so, the control unit is specifically configured to:
and controlling the natural cooling condenser to run at full speed, and controlling the compressor to be closed so as to enable the cooling capacity proportion to be 1, and enabling the air conditioner of the machine room to run in a natural cooling mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210348870.2A CN116928762A (en) | 2022-04-01 | 2022-04-01 | Machine room air conditioner and operation control method and device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210348870.2A CN116928762A (en) | 2022-04-01 | 2022-04-01 | Machine room air conditioner and operation control method and device thereof |
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| CN116928762A true CN116928762A (en) | 2023-10-24 |
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| CN202210348870.2A Pending CN116928762A (en) | 2022-04-01 | 2022-04-01 | Machine room air conditioner and operation control method and device thereof |
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