CN118031405A - 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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- CN118031405A CN118031405A CN202211383386.XA CN202211383386A CN118031405A CN 118031405 A CN118031405 A CN 118031405A CN 202211383386 A CN202211383386 A CN 202211383386A CN 118031405 A CN118031405 A CN 118031405A
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- 238000000034 method Methods 0.000 title claims abstract description 40
- 238000011084 recovery Methods 0.000 claims abstract description 413
- 238000005057 refrigeration Methods 0.000 claims abstract description 108
- 238000001816 cooling Methods 0.000 claims abstract description 74
- 238000010438 heat treatment Methods 0.000 claims abstract description 66
- 238000009423 ventilation Methods 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 230000001105 regulatory effect Effects 0.000 claims description 154
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 145
- 230000001276 controlling effect Effects 0.000 claims description 93
- 238000010586 diagram Methods 0.000 description 20
- 239000003507 refrigerant Substances 0.000 description 8
- 238000004590 computer program Methods 0.000 description 7
- 238000004378 air conditioning Methods 0.000 description 6
- 230000006870 function Effects 0.000 description 6
- 229910052731 fluorine Inorganic materials 0.000 description 5
- 239000011737 fluorine Substances 0.000 description 5
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 4
- 230000008520 organization Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001960 triggered effect Effects 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
- F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
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 system, a heat recovery system, and a controller; the refrigerating system comprises a compressor, a cooling channel of the plate heat exchanger, an expansion valve and an evaporator which are sequentially connected and form a refrigerating circulation loop, wherein the outlet end of the compressor is connected with the air inlet end of the cooling channel of the plate heat exchanger, and the liquid outlet end of the cooling channel of the plate heat exchanger is connected with the inlet end of the expansion valve; the heat recovery system comprises a heat recovery coil and a heating channel of the plate heat exchanger which are sequentially connected and form a heat recovery loop; wherein the heat recovery coil is located on the return side of the indoor ventilation channel. Through setting up the heat recovery coil in indoor ventilation channel's return air side, because the return air temperature of computer lab is stable, do not receive outdoor ambient temperature's influence, utilize heat recovery coil and plate heat exchanger to carry out two-stage heat recovery, can carry out stable effectual heat recovery throughout the year to improve the heat recovery efficiency of computer lab air conditioner.
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
Along with the vigorous development of digital economy, the construction scale of a data center is larger and larger, a large number of servers are stored in a data machine room, the servers need to run continuously for 24 hours, so that huge power consumption can be generated, and nearly 90% of electric energy is converted into heat to be discharged, so that heat recovery is needed to be carried out on the heat in the data machine room to improve the energy utilization rate.
The machine room air conditioner is used for cooling the machine room to ensure the stable operation of the server, at present, the indirect evaporative cooling air conditioner unit is more and more widely applied due to the natural cooling function, the air conditioner is usually started in a natural cooling mode in winter, and a natural cold source can be directly utilized for refrigerating so as to reduce the energy consumption of the air conditioner, but at the moment, if a user has a heat recovery requirement, the heat in the machine room cannot be effectively recovered due to the natural cooling mode when the air conditioner is started.
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 heat recovery efficiency of the machine room air conditioner.
In order to achieve the above purpose, the present application provides the following technical solutions:
In a first aspect, the present application provides a machine room air conditioner, including: a refrigeration system, a heat recovery system, and a controller;
the refrigerating system comprises a compressor, a cooling channel of the plate heat exchanger, an expansion valve and an evaporator which are sequentially connected and form a refrigerating circulation loop, wherein the outlet end of the compressor is connected with the air inlet end of the cooling channel of the plate heat exchanger, and the liquid outlet end of the cooling channel of the plate heat exchanger is connected with the inlet end of the expansion valve;
the heat recovery system comprises a heat recovery coil pipe and a heating channel of the plate heat exchanger, which are sequentially connected and form a heat recovery loop; wherein the heat recovery coil is positioned on the air return side of the indoor ventilation channel;
the controller is respectively connected with the refrigerating system and the heat recovery system in a signal way, and the controller is used for:
the operation modes of the refrigeration system and the heat recovery system are controlled according to the outdoor temperature and the heat recovery demand to adjust the recovery amount of heat recovery.
Optionally, the device further comprises a first regulating valve and a second regulating valve;
the water inlet end of the heat recovery coil pipe is respectively connected with the water return end and the first end of the first regulating valve, the water outlet end of the heat recovery coil pipe is connected with the second end of the first regulating valve, the third end of the first regulating valve is respectively connected with the water inlet end of the heating channel of the plate heat exchanger and the first end of the second regulating valve, the water outlet end of the heating channel of the plate heat exchanger is connected with the second end of the second regulating valve, and the third end of the second regulating valve is connected with the water supply end;
The controller is respectively connected with the first regulating valve and the second regulating valve in a signal way, and the controller is used for:
And respectively controlling the working states of the first regulating valve and the second regulating valve according to the outdoor temperature and the heat recovery requirement to control the working modes of the refrigerating system and the heat recovery system so as to regulate the recovery amount of heat recovery.
Optionally, the air-air heat exchanger is also included;
The heat recovery coil, the air-to-air heat exchanger and the evaporator are sequentially arranged in the indoor ventilation channel along the direction of the return air inlet to the air supply outlet.
Optionally, the device further comprises a third regulating valve and a cooling tower;
the third end of the second regulating valve is connected with the water supply end through the first end of the third regulating valve and the second end of the third regulating valve, the third end of the third regulating valve is connected with the water inlet end of the cooling tower, and the water outlet end of the cooling tower is connected with the water return end;
the controller is in signal connection with the third regulating valve, and the controller is used for:
And controlling the working state of the third regulating valve according to the outdoor temperature and the heat recovery requirement so as to regulate the recovery amount of heat recovery.
In a second aspect, the present application further provides a method for controlling operation of a machine room air conditioner, where any one of the machine room air conditioners provided in the above technical solution is applied, and the method for controlling operation includes:
Acquiring an outdoor temperature and determining a heat recovery requirement;
according to the outdoor temperature and the heat recovery requirement, the working modes of the refrigeration system and the heat recovery system are controlled by controlling the working states of a compressor, a cooling channel of the plate heat exchanger, an expansion valve and an evaporator in the refrigeration system and the working states of a heat recovery coil and a heating channel of the plate heat exchanger in the heat recovery system so as to adjust the recovery amount of heat recovery.
Optionally, if the outdoor temperature is greater than or equal to a preset temperature and the heat recovery requirement is a hot water requirement, then:
And controlling a compressor, a cooling channel of the plate heat exchanger, an expansion valve and an evaporator in the refrigeration system to be in an operating state, and controlling a heat recovery coil and a heating channel of the plate heat exchanger in the heat recovery system to be in an operating state so that the refrigeration system works in a compressor refrigeration mode and the heat recovery system works in a first heat recovery mode.
Optionally, if the outdoor temperature is greater than or equal to a preset temperature and the heat recovery requirement is no hot water requirement, then:
and controlling a compressor, a cooling channel of the plate heat exchanger, an expansion valve and an evaporator in the refrigeration system to be in an operating state, and controlling a heating channel of the plate heat exchanger in the heat recovery system to be in an operating state and a heat recovery coil to be in a dormant state so that the refrigeration system works in a compressor refrigeration mode and the heat recovery system works in a first non-heat recovery mode.
Optionally, if the outdoor temperature is less than a preset temperature and the heat recovery requirement is a hot water requirement, then:
And controlling a compressor, a cooling channel of the plate heat exchanger, an expansion valve and an evaporator in the refrigeration system to be in a dormant state, and controlling a heat recovery coil in the heat recovery system to be in an operating state and a heating channel of the plate heat exchanger to be in a dormant state so that the refrigeration system works in a non-refrigeration mode and the heat recovery system works in a second heat recovery mode.
Optionally, if the outdoor temperature is less than a preset temperature and the heat recovery requirement is no hot water requirement, then:
and controlling a compressor, a cooling channel of the plate heat exchanger, an expansion valve and an evaporator in the refrigeration system to be in a dormant state, and controlling a heat recovery coil and a heating channel of the plate heat exchanger in the heat recovery system to be in a dormant state so that the refrigeration system works in a non-refrigeration mode and the heat recovery system works in a second non-heat recovery mode.
In a third aspect, the present application further provides a method for controlling operation of a machine room air conditioner, where any one of the machine room air conditioners provided in the above technical solution is applied, and the method for controlling operation includes:
Acquiring an outdoor temperature and determining a heat recovery requirement;
and controlling the working modes of the refrigeration system and the heat recovery system according to the outdoor temperature and the heat recovery requirement so as to adjust the recovery amount of heat recovery.
Optionally, the controlling the operation modes of the refrigeration system and the heat recovery system according to the outdoor temperature and the heat recovery requirement to adjust the recovery amount of the heat recovery includes:
And controlling the working modes of the refrigeration system and the heat recovery system by controlling the working states of the first regulating valve and the second regulating valve according to the outdoor temperature and the heat recovery requirement so as to regulate the recovery amount of heat recovery.
Optionally, after the outdoor temperature is obtained and the heat recovery requirement is determined, the method further includes:
and controlling the working state of a third regulating valve according to the outdoor temperature and the heat recovery requirement so as to regulate the recovery amount of heat recovery.
Optionally, if the outdoor temperature is greater than or equal to a preset temperature and the heat recovery requirement is a hot water requirement, then:
And controlling the first regulating valve to be communicated with a passage between the heat recovery coil and the water inlet end of the heating channel of the plate heat exchanger, and controlling the second regulating valve and the third regulating valve to be communicated with a passage between the water outlet end and the water supply end of the heating channel of the plate heat exchanger.
Optionally, if the outdoor temperature is greater than or equal to a preset temperature and the heat recovery requirement is no hot water requirement, then:
The first regulating valve is controlled to be communicated with a passage between the water return end and the water inlet end of the heating channel of the plate heat exchanger, and the second regulating valve and the third regulating valve are controlled to be communicated with a passage between the water outlet end of the heating channel of the plate heat exchanger and the cooling tower.
Optionally, if the outdoor temperature is less than a preset temperature and the heat recovery requirement is a hot water requirement, then:
And controlling the first regulating valve, the second regulating valve and the third regulating valve to communicate a passage between the heat recovery coil and the water supply end.
Optionally, if the outdoor temperature is less than a preset temperature and the heat recovery requirement is no hot water requirement, then:
and controlling the first regulating valve, the second regulating valve and the third regulating valve to be closed.
In a fourth aspect, the present application further provides an operation control device of a machine room air conditioner, which is applied to the machine room air conditioner according to any one of the first aspect, and the device includes:
a first acquisition unit for acquiring an outdoor temperature and determining a heat recovery requirement;
and the first control unit is used for controlling the working modes of the refrigeration system and the heat recovery system according to the outdoor temperature and the heat recovery requirement so as to adjust the recovery amount of heat recovery.
Optionally, the first control unit is specifically configured to:
And controlling the working modes of the refrigeration system and the heat recovery system by controlling the working states of the first regulating valve and the second regulating valve according to the outdoor temperature and the heat recovery requirement so as to regulate the recovery amount of heat recovery.
Optionally, the first control unit is further configured to:
and controlling the working state of a third regulating valve according to the outdoor temperature and the heat recovery requirement so as to regulate the recovery amount of heat recovery.
Optionally, the first control unit is specifically configured to:
if the outdoor temperature is greater than or equal to a preset temperature and the heat recovery requirement is a hot water requirement, then:
And controlling the first regulating valve to be communicated with a passage between the heat recovery coil and the water inlet end of the heating channel of the plate heat exchanger, and controlling the second regulating valve and the third regulating valve to be communicated with a passage between the water outlet end and the water supply end of the heating channel of the plate heat exchanger.
Optionally, the first control unit is specifically configured to:
if the outdoor temperature is greater than or equal to a preset temperature and the heat recovery requirement is no hot water requirement, then:
The first regulating valve is controlled to be communicated with a passage between the water return end and the water inlet end of the heating channel of the plate heat exchanger, and the second regulating valve and the third regulating valve are controlled to be communicated with a passage between the water outlet end of the heating channel of the plate heat exchanger and the cooling tower.
Optionally, the first control unit is specifically configured to:
if the outdoor temperature is less than the preset temperature and the heat recovery requirement is a hot water requirement, then:
And controlling the first regulating valve, the second regulating valve and the third regulating valve to communicate a passage between the heat recovery coil and the water supply end.
Optionally, the first control unit is specifically configured to:
If the outdoor temperature is less than the preset temperature and the heat recovery requirement is no hot water requirement, then:
and controlling the first regulating valve, the second regulating valve and the third regulating valve to be closed.
In a fifth aspect, the present application further provides an operation control device for a machine room air conditioner, which is applied to the machine room air conditioner according to any one of the first aspect, and the device includes:
A second acquisition unit for acquiring an outdoor temperature and determining a heat recovery requirement;
the second control unit is used for controlling the working modes of the refrigeration system and the heat recovery system according to the outdoor temperature and the heat recovery requirement by controlling the working states of the compressor, the cooling channel of the plate heat exchanger, the expansion valve and the evaporator in the refrigeration system and the working states of the heat recovery coil and the heating channel of the plate heat exchanger in the heat recovery system so as to adjust the recovery amount of heat recovery.
Optionally, the second control unit is specifically configured to:
if the outdoor temperature is greater than or equal to the preset temperature and the heat recovery requirement is that hot water is required, then:
And controlling a compressor, a cooling channel of the plate heat exchanger, an expansion valve and an evaporator in the refrigeration system to be in an operating state, and controlling a heat recovery coil and a heating channel of the plate heat exchanger in the heat recovery system to be in an operating state so that the refrigeration system works in a compressor refrigeration mode and the heat recovery system works in a first heat recovery mode.
Optionally, the second control unit is specifically configured to:
if the outdoor temperature is greater than or equal to the preset temperature and the heat recovery requirement is no hot water requirement, then:
and controlling a compressor, a cooling channel of the plate heat exchanger, an expansion valve and an evaporator in the refrigeration system to be in an operating state, and controlling a heating channel of the plate heat exchanger in the heat recovery system to be in an operating state and a heat recovery coil to be in a dormant state so that the refrigeration system works in a compressor refrigeration mode and the heat recovery system works in a first non-heat recovery mode.
Optionally, the second control unit is specifically configured to:
If the outdoor temperature is less than the preset temperature and the heat recovery requirement is that hot water is required, then:
And controlling a compressor, a cooling channel of the plate heat exchanger, an expansion valve and an evaporator in the refrigeration system to be in a dormant state, and controlling a heat recovery coil in the heat recovery system to be in an operating state and a heating channel of the plate heat exchanger to be in a dormant state so that the refrigeration system works in a non-refrigeration mode and the heat recovery system works in a second heat recovery mode.
Optionally, the second control unit is specifically configured to:
if the outdoor temperature is less than the preset temperature and the heat recovery requirement is no hot water requirement, then:
and controlling a compressor, a cooling channel of the plate heat exchanger, an expansion valve and an evaporator in the refrigeration system to be in a dormant state, and controlling a heat recovery coil and a heating channel of the plate heat exchanger in the heat recovery system to be in a dormant state so that the refrigeration system works in a non-refrigeration mode and the heat recovery system works in a second non-heat recovery 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 system, a heat recovery system, and a controller; the refrigerating system comprises a compressor, a cooling channel of the plate heat exchanger, an expansion valve and an evaporator which are sequentially connected and form a refrigerating circulation loop, wherein the outlet end of the compressor is connected with the air inlet end of the cooling channel of the plate heat exchanger, and the liquid outlet end of the cooling channel of the plate heat exchanger is connected with the inlet end of the expansion valve; the heat recovery system comprises a heat recovery coil and a heating channel of the plate heat exchanger which are sequentially connected and form a heat recovery loop; wherein the heat recovery coil is positioned on the air return side of the indoor ventilation channel; the controller is respectively connected with the refrigerating system and the heat recovery system in a signal way, and is used for: the operation modes of the refrigeration system and the heat recovery system are controlled according to the outdoor temperature and the heat recovery demand to adjust the recovery amount of heat recovery. Through setting up the heat recovery coil in indoor ventilation channel's return air side, because the return air temperature of computer lab is stable, do not receive outdoor ambient temperature's influence, utilize heat recovery coil and plate heat exchanger to carry out two-stage heat recovery, can carry out stable effectual heat recovery throughout the year to improve the heat recovery efficiency of computer lab air conditioner.
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 diagram of an indoor air side circulation part and an outdoor air side circulation part of an 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 diagram of an operation state of an air conditioner in a machine room according to an embodiment of the present application;
fig. 7 is a schematic diagram of an operation state of another air conditioner in a machine room according to an embodiment of the present application;
Fig. 8 is a schematic diagram of an operation state of another air conditioner in a machine room according to an embodiment of the present application;
fig. 9 is a schematic diagram of an operation state of another air conditioner in a machine room according to an embodiment of the present application;
Fig. 10 is a schematic structural diagram of an operation control device of an air conditioner in a machine room according to an embodiment of the present application;
Fig. 11 is a flow chart of another operation control method of an air conditioner in a machine room according to an embodiment of the present application;
Fig. 12 is a schematic diagram of an operation mode of an air conditioner in a machine room according to an embodiment of the present application;
fig. 13 is a schematic diagram of an operation mode of another air conditioner in a machine room according to an embodiment of the present application;
Fig. 14 is a schematic diagram of an operation mode of another air conditioner in a machine room according to an embodiment of the present application;
fig. 15 is a schematic diagram of an operation mode of another air conditioner in a machine room according to an embodiment of the present application;
fig. 16 is a schematic structural diagram of another operation control device for an air conditioner in a machine room according to an embodiment of the present application.
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.
In the data machine room, the machine room air conditioner is used for adjusting the room temperature of the machine room, so that the room temperature of the machine room is maintained at a stable numerical value, and the stable operation of a server in the machine room is ensured. In a machine room air conditioner, an indirect evaporative cooling air conditioner unit is widely applied because of a natural cooling mode, but most of heat recovery schemes of the air conditioner are that water coils are arranged on an outdoor exhaust side, and the scheme has the defect that when a large amount of heat is needed in winter, the unit cannot effectively recover heat in the natural cooling mode; in addition, in the air conditioning system, the heat recovery scheme has the advantages that the air-cooled condenser is replaced by the water-fluorine heat exchanger, so that the defect is more obvious, the heat recovery cannot be performed in winter, the safety operation of the air conditioning unit is seriously affected in summer due to unstable heat supply requirements, and the method is the last inversion method.
That is, the efficiency of the heat recovery scheme of the current machine room air conditioner is not high, and when in winter, the indirect evaporative cooling air conditioning unit cannot effectively perform heat recovery due to the natural cooling mode, and when in winter, if a user has a heat recovery requirement, the air conditioning system cannot meet the heat recovery requirement of the user. The machine room air conditioner provided by the application can perform heat recovery all the year round so as to meet the annual heat recovery requirement of users.
As shown in fig. 1, the embodiment of the application provides a machine room air conditioner, which includes: a refrigeration system, a heat recovery system, and a controller;
The refrigerating system comprises a compressor 101, a cooling channel 102 of the plate heat exchanger, an expansion valve 104 and an evaporator 103 which are sequentially connected and form a refrigerating circulation loop, wherein the outlet end of the compressor 101 is connected with the air inlet end of the cooling channel 102 of the plate heat exchanger, and the liquid outlet end of the cooling channel 102 of the plate heat exchanger is connected with the inlet end of the expansion valve 104; wherein, the plate heat exchanger refers to a plate type water fluorine heat exchanger;
The heat recovery system comprises a heat recovery coil 201 and a heating channel 202 of the plate heat exchanger which are connected in sequence and form a heat recovery loop; wherein the heat recovery coil 201 is located on the return side of the indoor ventilation channel;
The controller is respectively connected with the refrigerating system and the heat recovery system in a signal way, and is used for: the operation modes of the refrigeration system and the heat recovery system are controlled according to the outdoor temperature and the heat recovery demand to adjust the recovery amount of heat recovery.
The control of the working modes of the refrigeration system and the heat recovery system refers to the control of the working states of the refrigeration system and the heat recovery system, and the control of the working states of all components in the refrigeration system and the heat recovery system can be achieved in two modes in the application, one mode is to directly control the working states of all components in the refrigeration system and the heat recovery system, the other mode is to additionally add regulating valves, and the refrigeration system and the heat recovery system are in different working modes by controlling the states of the regulating valves.
According to the machine room air conditioner provided by the embodiment of the application, the heat recovery coil is arranged on the return air side of the indoor ventilation channel, so that the return air temperature of the machine room is stable and is not influenced by the outdoor environment temperature, and the heat recovery coil and the plate heat exchanger are utilized for two-stage heat recovery, so that the heat recovery can be stably and effectively carried out all the year round, and the heat recovery efficiency of the machine room air conditioner is improved.
In addition, the heat recovery coil is arranged on the air return side of the indoor ventilation channel, so that partial refrigeration capacity can be provided while heat is recovered, and the operation efficiency of the air conditioner of the machine room can be improved; because the heat quality of the indoor return air temperature of the machine room is lower, the plate type water fluorine heat exchanger of the compressor system is utilized for the second-stage recovery, the application range of the recovered hot water can be increased, the high-temperature and high-pressure exhaust gas of the compressor can be cooled while the heat is recovered, and the running efficiency of an air conditioner of the machine room can be improved.
In the refrigeration system, a compressor 101 outputs a high-temperature high-pressure gaseous refrigerant (for example, fluorine refrigerant), exchanges heat with water in a temperature rising channel 202 of the plate heat exchanger through a temperature reducing channel 102 of the plate heat exchanger, outputs a medium-temperature high-pressure liquid refrigerant, and then the medium-temperature high-pressure liquid refrigerant is throttled by an expansion valve 104 to become low-temperature low-pressure wet steam, and is gasified by an evaporator 103 to become a low-temperature low-pressure gaseous refrigerant to be input into the compressor 101 again, so that a refrigeration cycle is formed; in the heat recovery system, water entering from the water return end can firstly pass through the heat recovery coil 201 to exchange heat with indoor return air for primary heat recovery, and then can enter the heating channel 202 of the plate heat exchanger to exchange heat with refrigerant for secondary heat recovery, so that hot water is obtained from the water supply end for users to use.
The application uses the plate type water fluorine heat exchanger to replace the traditional air-cooled condenser, thereby effectively reducing the condensation temperature, improving the circulation efficiency of a compressor refrigeration circulation system, reducing the wind resistance of an outdoor fan of an air conditioner of a machine room, reducing the power of the outdoor fan and improving the running efficiency of the air conditioner of the machine room.
The indoor air side circulation part and the outdoor air side circulation part of the machine room air conditioner provided by the embodiment of the application are described below:
as shown in fig. 2, an indoor air side circulation part and an outdoor air side circulation part of the machine room air conditioner provided by the embodiment of the application are schematically shown. The heat recovery coil, the air-air heat exchanger (i.e. the air-air heat exchanger) and the evaporator are sequentially arranged in the indoor ventilation channel along the direction of the return air inlet to the air supply outlet, i.e. along the direction of the indoor return air side to the indoor exhaust side. The air flow organization of the circulating part at the indoor air side is that the machine room return air firstly enters a heat recovery water coil, then an air-air heat exchanger and finally enters the machine room through an evaporator; the air flow organization of the outdoor air side circulation part is that outdoor air inlet is directly discharged to the outdoor atmosphere after passing through the air-air heat exchanger.
It should be noted that the airflow organization form is not limited to the form shown in fig. 2, the air-air heat exchangers can be arranged at any angle, the heat recovery water coil pipe can be arranged side by side with the air-air heat exchangers and the evaporator, namely, the air-air heat exchangers can be arranged in different rows, the indoor and outdoor fans are not limited to the blowing type or the induced draft type, and the air-air heat exchangers can be correspondingly adjusted according to actual needs.
In a specific implementation, as shown in fig. 3, the machine room air conditioner provided in the embodiment of the present application may further include a first adjusting valve T1 and a second adjusting valve T2; the water inlet end of the heat recovery coil 201 is respectively connected with the water return end and the first end of the first regulating valve T1, the water outlet end of the heat recovery coil 201 is connected with the second end of the first regulating valve T1, the third end of the first regulating valve T1 is respectively connected with the water inlet end of the heating channel 202 of the plate heat exchanger and the first end of the second regulating valve T2, the water outlet end of the heating channel 202 of the plate heat exchanger is connected with the second end of the second regulating valve T2, and the third end of the second regulating valve T2 is connected with the water supply end;
the controller is connected with the first regulating valve T1 and the second regulating valve T2 in a signal way, and the controller is used for:
according to the outdoor temperature and the heat recovery requirement, the working states of the first regulating valve T1 and the second regulating valve T2 are respectively controlled to control the working modes of the refrigerating system and the heat recovery system so as to regulate the recovery amount of heat recovery.
In a specific implementation, as shown in fig. 4, the machine room air conditioner provided in the embodiment of the present application may further include a third adjusting valve T3 and a cooling tower 203; the third end of the second regulating valve T2 is connected with a water supply end through the first end of the third regulating valve T3 and the second end of the third regulating valve T3, the third end of the third regulating valve T3 is connected with the water inlet end of the cooling tower 203, and the water outlet end of the cooling tower 203 is connected with a water return end; the controller is in signal connection with the third regulating valve T3, and the controller is used for: according to the outdoor temperature and the heat recovery requirement, the working state of the third regulating valve T3 is controlled to regulate the recovery amount of heat recovery.
The first regulating valve, the second regulating valve and the third regulating valve provided by the embodiment of the application can be specifically three-way valves, and of course, other valves with regulating functions can also be used, for example, a plurality of two-way water valves or other valves can be utilized, so long as the switching of the water flow paths can be realized; in addition, fig. 4 is not limited to a form of cooling tower, and may be a chiller or other external cooling source.
Based on the same application conception, the application also provides a running control method of the machine room air conditioner, as shown in fig. 5, by applying any one of the machine room air conditioners provided in the above technical scheme, the running control method comprises:
S501, acquiring an outdoor temperature and determining a heat recovery requirement;
S502, controlling the working modes of the refrigeration system and the heat recovery system according to the outdoor temperature and the heat recovery requirement so as to adjust the recovery amount of heat recovery.
In the operation control method of the machine room air conditioner provided by the embodiment of the application, the outdoor temperature is firstly obtained, the heat recovery requirement is determined, and then the working modes of the refrigeration system and the heat recovery system are controlled according to the outdoor temperature and the heat recovery requirement so as to adjust the recovery amount of heat recovery, so that the annual stable and effective heat recovery can be performed, and the heat recovery efficiency of the air conditioner is improved.
It should be noted that the heat recovery requirement refers to a requirement of a user on hot water, and the cold water is heated to be domestic hot water or heating hot water, for example, workers in a data machine room daily need domestic water, the number of workers is large, the requirement on hot water is different in each season all the year round, and the machine room air conditioner in the embodiment of the application can determine the heat recovery requirement of the user and operate different modes according to the outdoor temperature and the heat recovery requirement, so that the resource utilization rate of the machine room air conditioning system is maximized as much as possible.
The heat recovery requirement in the application can be triggered by a user, two heat recovery requirement modes are preset, for example, the two heat recovery requirement modes can be selected by the user, and then the working modes of the refrigerating system and the heat recovery system are controlled according to the outdoor temperature by the machine room air conditioner, so that the recovery amount of heat recovery is adjusted, and the annual stable and effective heat recovery can be performed, thereby improving the heat recovery efficiency of the air conditioner.
In specific implementation, the application can control the working modes of the refrigeration system and the heat recovery system by controlling the working states of the first regulating valve and the second regulating valve according to the outdoor temperature and the heat recovery requirement so as to regulate the recovery amount of heat recovery. After the outdoor temperature is obtained and the heat recovery requirement is determined, the working state of the third regulating valve can be controlled according to the outdoor temperature and the heat recovery requirement so as to regulate the recovery amount of heat recovery.
In some embodiments, if the outdoor temperature is greater than or equal to the preset temperature and the heat recovery requirement is a hot water requirement, then: the first regulating valve T1 is controlled to be communicated with a passage between the heat recovery coil 201 and the water inlet end of the heating channel 202 of the plate heat exchanger, and the second regulating valve T2 and the third regulating valve T3 are controlled to be communicated with a passage between the water outlet end and the water supply end of the heating channel 202 of the plate heat exchanger.
Specifically, as shown in fig. 6, the solid line represents that the passage can flow therethrough, and the broken line represents that the passage is disconnected from flowing therethrough. The water inlet at the water return end firstly exchanges heat with indoor return air through a heat recovery coil 201 to complete first-stage heat recovery, then enters a heating channel 202 of the plate heat exchanger, exchanges heat with the exhaust gas of the compressor 101 to conduct second-stage heat recovery, and finally flows out from the water supply end.
In some embodiments, if the outdoor temperature is greater than or equal to the preset temperature and the heat recovery requirement is no hot water requirement, then: the first regulating valve T1 is controlled to be communicated with a passage between the water return end and the water inlet end of the heating channel 202 of the plate heat exchanger, and the second regulating valve T2 and the third regulating valve T3 are controlled to be communicated with a passage between the water outlet end of the heating channel 202 of the plate heat exchanger and the cooling tower 203.
Specifically, as shown in fig. 7, the water inlet at the water return end directly enters the heating channel 202 of the plate heat exchanger after passing through the first regulating valve T1, so as to cool the high-temperature and high-pressure exhaust gas of the compressor 101, that is, the high-temperature and high-pressure gaseous refrigerant in the cooling channel 102 of the plate heat exchanger, then enters the cooling tower 203 to cool the hot water after passing through the second regulating valve T2 and the third regulating valve T3 in turn, and enters the heat recovery system again after being cooled by the cooling tower 203, and then flows through the first regulating valve T1 again to enter the heating channel 202 of the plate heat exchanger, and exchanges heat with the refrigerant in the cooling channel 102 of the plate heat exchanger to increase the refrigerating capacity.
In some embodiments, if the outdoor temperature is less than the preset temperature and the heat recovery requirement is a hot water requirement, then: the first, second and third regulating valves T1, T2 and T3 are controlled to communicate the passage between the heat recovery coil 201 and the water supply end.
Specifically, as shown in fig. 8, after heat recovery is completed by heat recovery of the heat recovery coil 201 and indoor return air heat exchange, the water flows through the first regulating valve T1, the second regulating valve T2 and the third regulating valve T3 in sequence, directly flows out from the water supply end, and the refrigeration cycle system of the compressor 101 is not started, i.e. the refrigeration system is not started, but the air-to-air heat exchanger supplements the refrigeration capacity.
In some embodiments, if the outdoor temperature is less than the preset temperature and the heat recovery requirement is no hot water requirement, then: the first regulating valve T1, the second regulating valve T2 and the third regulating valve T3 are controlled to be closed.
Specifically, as shown in fig. 9, the refrigeration system and the heat recovery system are both turned off at this time, and only the air-to-air heat exchanger is used to provide refrigeration.
The above-mentioned various cases cover the case that the machine room air conditioner is operated throughout the year, and the water side heat recovery system performs flow path adjustment and mode switching through the three-way valve. All the conditions can ensure the safe operation and refrigeration output of the air conditioning system, and can perform stable and effective heat recovery when the heat supply requirement exists. In addition, the first-stage heat recovery is carried out on the indoor side, so that a part of refrigerating capacity is provided for the machine room while the heat is recovered, and the annual energy consumption of the air conditioner of the machine room is reduced.
Based on the same application conception, the embodiment of the application also provides an operation control device of the machine room air conditioner, as shown in fig. 10, comprising:
a first acquisition unit 1001 for acquiring an outdoor temperature and determining a heat recovery requirement;
The first control unit 1002 is used for controlling the operation modes of the refrigeration system and the heat recovery system according to the outdoor temperature and the heat recovery requirement, so as to adjust the recovery amount of heat recovery.
In some embodiments, the first control unit 1002 is specifically configured to:
according to the outdoor temperature and the heat recovery requirement, the working modes of the refrigeration system and the heat recovery system are controlled by controlling the working states of the first regulating valve and the second regulating valve so as to regulate the recovery amount of heat recovery.
In some embodiments, the first control unit 1002 is further configured to:
and controlling the working state of the third regulating valve according to the outdoor temperature and the heat recovery requirement so as to regulate the recovery amount of heat recovery.
In some embodiments, the first control unit 1002 is specifically configured to:
if the outdoor temperature is greater than or equal to the preset temperature and the heat recovery requirement is that hot water is required, then:
And controlling the first regulating valve to be communicated with a passage between the heat recovery coil and the water inlet end of the heating channel of the plate heat exchanger, and controlling the second regulating valve and the third regulating valve to be communicated with a passage between the water outlet end and the water supply end of the heating channel of the plate heat exchanger.
In some embodiments, the first control unit 1002 is specifically configured to:
if the outdoor temperature is greater than or equal to the preset temperature and the heat recovery requirement is no hot water requirement, then:
And controlling a passage between the return water end communicated with the first regulating valve and the water inlet end of the heating channel of the plate heat exchanger, and controlling a passage between the water outlet end of the heating channel of the plate heat exchanger communicated with the second regulating valve and the cooling tower.
In some embodiments, the first control unit 1002 is specifically configured to:
If the outdoor temperature is less than the preset temperature and the heat recovery requirement is that hot water is required, then:
the first regulating valve, the second regulating valve and the third regulating valve are controlled to be communicated with a passage between the heat recovery coil and the water supply end.
In some embodiments, the first control unit 1002 is specifically configured to:
if the outdoor temperature is less than the preset temperature and the heat recovery requirement is no hot water requirement, then:
and controlling the first regulating valve, the second regulating valve and the third regulating valve to be closed.
Based on the same application conception, the application also provides a method for controlling the operation of the air conditioner in the machine room, as shown in fig. 11, by applying any one of the air conditioners in the machine room provided in the above technical scheme, the method for controlling the operation comprises:
s1101, acquiring outdoor temperature and determining heat recovery requirements;
S1102, according to outdoor temperature and heat recovery requirements, the working modes of the refrigeration system and the heat recovery system are controlled by controlling the working states of a compressor, a cooling channel of the plate heat exchanger, an expansion valve and an evaporator in the refrigeration system and the working states of a heat recovery coil and a heating channel of the plate heat exchanger in the heat recovery system so as to adjust the recovery amount of heat recovery.
It is worth to say that the air-air heat exchanger in the application is always in an operation state under various modes, so that the refrigerating capacity is ensured.
In some embodiments, as shown in fig. 12, if the outdoor temperature is equal to or higher than the preset temperature and the heat recovery requirement is a hot water requirement, then: the compressor 101, the cooling channel 102 of the plate heat exchanger, the expansion valve 104 and the evaporator 103 in the refrigeration system are controlled to be in an operating state, and the heat recovery coil 201 and the heating channel 202 of the plate heat exchanger in the heat recovery system are controlled to be in an operating state, so that the refrigeration system works in the compressor refrigeration mode and the heat recovery system works in the first heat recovery mode.
In some embodiments, as shown in fig. 13, if the outdoor temperature is equal to or higher than the preset temperature and the heat recovery requirement is no hot water requirement, then: the compressor 101, the cooling channel 102 of the plate heat exchanger, the expansion valve 104 and the evaporator 103 in the refrigeration system are controlled to be in an operation state, the heating channel 202 of the plate heat exchanger in the heat recovery system is controlled to be in an operation state, and the heat recovery coil 201 is controlled to be in a dormant state, so that the refrigeration system works in a compressor refrigeration mode and the heat recovery system works in a first non-heat recovery mode.
In some embodiments, as shown in fig. 14, if the outdoor temperature is less than the preset temperature and the heat recovery requirement is a hot water requirement, then: the compressor 101, the cooling channel 102 of the plate heat exchanger, the expansion valve 104 and the evaporator 103 in the refrigeration system are controlled to be in a dormant state, the heat recovery coil 201 in the heat recovery system is controlled to be in an operating state, and the heating channel 202 of the plate heat exchanger is controlled to be in a dormant state, so that the refrigeration system works in a non-refrigeration mode and the heat recovery system works in a second heat recovery mode.
In some embodiments, as shown in fig. 15, if the outdoor temperature is less than the preset temperature and the heat recovery requirement is no hot water requirement, then: the compressor 101, the cooling channel 102 of the plate heat exchanger, the expansion valve 104 and the evaporator 103 in the refrigeration system are controlled to be in a dormant state, and the heat recovery coil 201 and the heating channel 202 of the plate heat exchanger in the heat recovery system are controlled to be in a dormant state, so that the refrigeration system works in a non-refrigeration mode and the heat recovery system works in a second non-heat recovery mode.
Based on the same application conception, the embodiment of the application also provides an operation control device of the machine room air conditioner, as shown in fig. 16, comprising:
A second acquisition unit 1601 for acquiring an outdoor temperature and determining a heat recovery requirement;
The second control unit 1602 is configured to control operation modes of the refrigeration system and the heat recovery system according to the outdoor temperature and the heat recovery requirement by controlling operation states of the compressor, the cooling channel of the plate heat exchanger, the expansion valve and the evaporator in the refrigeration system, and operation states of the heat recovery coil and the heating channel of the plate heat exchanger in the heat recovery system, so as to adjust recovery amount of heat recovery.
In some embodiments, the second control unit 1602 is specifically configured to:
if the outdoor temperature is greater than or equal to the preset temperature and the heat recovery requirement is that hot water is required, then:
The method comprises the steps of controlling a compressor, a cooling channel of a plate heat exchanger, an expansion valve and an evaporator in a refrigeration system to be in an operation state, and controlling a heat recovery coil and a heating channel of the plate heat exchanger in a heat recovery system to be in an operation state so that the refrigeration system works in a compressor refrigeration mode and the heat recovery system works in a first heat recovery mode.
In some embodiments, the second control unit 1602 is specifically configured to:
if the outdoor temperature is greater than or equal to the preset temperature and the heat recovery requirement is no hot water requirement, then:
The method comprises the steps of controlling a compressor, a cooling channel of a plate heat exchanger, an expansion valve and an evaporator in a refrigerating system to be in an operating state, controlling a heating channel of the plate heat exchanger in a heat recovery system to be in an operating state and controlling a heat recovery coil to be in a dormant state, so that the refrigerating system works in a compressor refrigerating mode and the heat recovery system works in a first non-heat recovery mode.
In some embodiments, the second control unit 1602 is specifically configured to:
If the outdoor temperature is less than the preset temperature and the heat recovery requirement is that hot water is required, then:
The compressor, the cooling channel of the plate heat exchanger, the expansion valve and the evaporator in the refrigeration system are controlled to be in a dormant state, and the heat recovery coil in the heat recovery system is controlled to be in an operating state, and the heating channel of the plate heat exchanger is controlled to be in a dormant state, so that the refrigeration system works in a non-refrigeration mode and the heat recovery system works in a second heat recovery mode.
In some embodiments, the second control unit 1602 is specifically configured to:
if the outdoor temperature is less than the preset temperature and the heat recovery requirement is no hot water requirement, then:
the compressor, the cooling channel of the plate heat exchanger, the expansion valve and the evaporator in the refrigeration system are controlled to be in a dormant state, and the heat recovery coil and the heating channel of the plate heat exchanger in the heat recovery system are controlled to be in a dormant state, so that the refrigeration system works in a non-refrigeration mode and the heat recovery system works in a second non-heat recovery 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 system, a heat recovery system, and a controller; the refrigerating system comprises a compressor, a cooling channel of the plate heat exchanger, an expansion valve and an evaporator which are sequentially connected and form a refrigerating circulation loop, wherein the outlet end of the compressor is connected with the air inlet end of the cooling channel of the plate heat exchanger, and the liquid outlet end of the cooling channel of the plate heat exchanger is connected with the inlet end of the expansion valve; the heat recovery system comprises a heat recovery coil and a heating channel of the plate heat exchanger which are sequentially connected and form a heat recovery loop; wherein the heat recovery coil is positioned on the air return side of the indoor ventilation channel; the controller is respectively connected with the refrigerating system and the heat recovery system in a signal way, and is used for: the operation modes of the refrigeration system and the heat recovery system are controlled according to the outdoor temperature and the heat recovery demand to adjust the recovery amount of heat recovery. Through setting up the heat recovery coil in indoor ventilation channel's return air side, because the return air temperature of computer lab is stable, do not receive outdoor ambient temperature's influence, utilize heat recovery coil and plate heat exchanger to carry out two-stage heat recovery, can carry out stable effectual heat recovery throughout the year to improve the heat recovery efficiency of computer lab air conditioner.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the 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 (23)
1. A computer lab air conditioner, characterized in that includes: a refrigeration system, a heat recovery system, and a controller;
the refrigerating system comprises a compressor, a cooling channel of the plate heat exchanger, an expansion valve and an evaporator which are sequentially connected and form a refrigerating circulation loop, wherein the outlet end of the compressor is connected with the air inlet end of the cooling channel of the plate heat exchanger, and the liquid outlet end of the cooling channel of the plate heat exchanger is connected with the inlet end of the expansion valve;
the heat recovery system comprises a heat recovery coil pipe and a heating channel of the plate heat exchanger, which are sequentially connected and form a heat recovery loop; wherein the heat recovery coil is positioned on the air return side of the indoor ventilation channel;
the controller is respectively connected with the refrigerating system and the heat recovery system in a signal way, and the controller is used for:
the operation modes of the refrigeration system and the heat recovery system are controlled according to the outdoor temperature and the heat recovery demand to adjust the recovery amount of heat recovery.
2. The machine room air conditioner of claim 1, further comprising a first regulating valve and a second regulating valve;
the water inlet end of the heat recovery coil pipe is respectively connected with the water return end and the first end of the first regulating valve, the water outlet end of the heat recovery coil pipe is connected with the second end of the first regulating valve, the third end of the first regulating valve is respectively connected with the water inlet end of the heating channel of the plate heat exchanger and the first end of the second regulating valve, the water outlet end of the heating channel of the plate heat exchanger is connected with the second end of the second regulating valve, and the third end of the second regulating valve is connected with the water supply end;
The controller is respectively connected with the first regulating valve and the second regulating valve in a signal way, and the controller is used for:
And respectively controlling the working states of the first regulating valve and the second regulating valve according to the outdoor temperature and the heat recovery requirement to control the working modes of the refrigerating system and the heat recovery system so as to regulate the recovery amount of heat recovery.
3. The machine room air conditioner of claim 1, further comprising an air-to-air heat exchanger;
The heat recovery coil, the air-to-air heat exchanger and the evaporator are sequentially arranged in the indoor ventilation channel along the direction of the return air inlet to the air supply outlet.
4. The machine room air conditioner of claim 2, further comprising a third regulating valve and a cooling tower;
the third end of the second regulating valve is connected with the water supply end through the first end of the third regulating valve and the second end of the third regulating valve, the third end of the third regulating valve is connected with the water inlet end of the cooling tower, and the water outlet end of the cooling tower is connected with the water return end;
the controller is in signal connection with the third regulating valve, and the controller is used for:
And controlling the working state of the third regulating valve according to the outdoor temperature and the heat recovery requirement so as to regulate the recovery amount of heat recovery.
5. 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 4, the method comprising:
Acquiring an outdoor temperature and determining a heat recovery requirement;
according to the outdoor temperature and the heat recovery requirement, the working modes of the refrigeration system and the heat recovery system are controlled by controlling the working states of a compressor, a cooling channel of the plate heat exchanger, an expansion valve and an evaporator in the refrigeration system and the working states of a heat recovery coil and a heating channel of the plate heat exchanger in the heat recovery system so as to adjust the recovery amount of heat recovery.
6. The method of claim 5, wherein if the outdoor temperature is greater than or equal to a predetermined temperature and the heat recovery requirement is a hot water requirement, then:
And controlling a compressor, a cooling channel of the plate heat exchanger, an expansion valve and an evaporator in the refrigeration system to be in an operating state, and controlling a heat recovery coil and a heating channel of the plate heat exchanger in the heat recovery system to be in an operating state so that the refrigeration system works in a compressor refrigeration mode and the heat recovery system works in a first heat recovery mode.
7. The method of claim 5, wherein if the outdoor temperature is greater than or equal to a preset temperature and the heat recovery requirement is no hot water requirement, then:
and controlling a compressor, a cooling channel of the plate heat exchanger, an expansion valve and an evaporator in the refrigeration system to be in an operating state, and controlling a heating channel of the plate heat exchanger in the heat recovery system to be in an operating state and a heat recovery coil to be in a dormant state so that the refrigeration system works in a compressor refrigeration mode and the heat recovery system works in a first non-heat recovery mode.
8. The method of claim 5, wherein if the outdoor temperature is less than a predetermined temperature and the heat recovery requirement is a hot water requirement, then:
And controlling a compressor, a cooling channel of the plate heat exchanger, an expansion valve and an evaporator in the refrigeration system to be in a dormant state, and controlling a heat recovery coil in the heat recovery system to be in an operating state and a heating channel of the plate heat exchanger to be in a dormant state so that the refrigeration system works in a non-refrigeration mode and the heat recovery system works in a second heat recovery mode.
9. The method of claim 5, wherein if the outdoor temperature is less than a predetermined temperature and the heat recovery requirement is no hot water requirement, then:
and controlling a compressor, a cooling channel of the plate heat exchanger, an expansion valve and an evaporator in the refrigeration system to be in a dormant state, and controlling a heat recovery coil and a heating channel of the plate heat exchanger in the heat recovery system to be in a dormant state so that the refrigeration system works in a non-refrigeration mode and the heat recovery system works in a second non-heat recovery mode.
10. 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 4, the method comprising:
Acquiring an outdoor temperature and determining a heat recovery requirement;
and controlling the working modes of the refrigeration system and the heat recovery system according to the outdoor temperature and the heat recovery requirement so as to adjust the recovery amount of heat recovery.
11. The method of claim 10, wherein said controlling the operation modes of the refrigeration system and the heat recovery system to adjust the recovery amount of heat recovery based on said outdoor temperature and said heat recovery demand comprises:
And controlling the working modes of the refrigeration system and the heat recovery system by controlling the working states of the first regulating valve and the second regulating valve according to the outdoor temperature and the heat recovery requirement so as to regulate the recovery amount of heat recovery.
12. The method of claim 10 or 11, wherein after the obtaining the outdoor temperature and determining the heat recovery requirement, further comprising:
and controlling the working state of a third regulating valve according to the outdoor temperature and the heat recovery requirement so as to regulate the recovery amount of heat recovery.
13. The method of claim 12, wherein if the outdoor temperature is greater than or equal to a predetermined temperature and the heat recovery requirement is a hot water requirement, then:
And controlling the first regulating valve to be communicated with a passage between the heat recovery coil and the water inlet end of the heating channel of the plate heat exchanger, and controlling the second regulating valve and the third regulating valve to be communicated with a passage between the water outlet end and the water supply end of the heating channel of the plate heat exchanger.
14. The method of claim 12, wherein if the outdoor temperature is greater than or equal to a preset temperature and the heat recovery requirement is no hot water requirement, then:
The first regulating valve is controlled to be communicated with a passage between the water return end and the water inlet end of the heating channel of the plate heat exchanger, and the second regulating valve and the third regulating valve are controlled to be communicated with a passage between the water outlet end of the heating channel of the plate heat exchanger and the cooling tower.
15. The method of claim 12, wherein if the outdoor temperature is less than a predetermined temperature and the heat recovery requirement is a hot water requirement:
And controlling the first regulating valve, the second regulating valve and the third regulating valve to communicate a passage between the heat recovery coil and the water supply end.
16. The method of claim 12, wherein if the outdoor temperature is less than a predetermined temperature and the heat recovery requirement is no hot water requirement:
and controlling the first regulating valve, the second regulating valve and the third regulating valve to be closed.
17. 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 4, the device comprising:
a first acquisition unit for acquiring an outdoor temperature and determining a heat recovery requirement;
and the first control unit is used for controlling the working modes of the refrigeration system and the heat recovery system according to the outdoor temperature and the heat recovery requirement so as to adjust the recovery amount of heat recovery.
18. The apparatus of claim 17, wherein the first control unit is specifically configured to:
And controlling the working modes of the refrigeration system and the heat recovery system by controlling the working states of the first regulating valve and the second regulating valve according to the outdoor temperature and the heat recovery requirement so as to regulate the recovery amount of heat recovery.
19. The apparatus of claim 17 or 18, wherein the first control unit is further configured to:
and controlling the working state of a third regulating valve according to the outdoor temperature and the heat recovery requirement so as to regulate the recovery amount of heat recovery.
20. The apparatus of claim 19, wherein the first control unit is specifically configured to:
if the outdoor temperature is greater than or equal to a preset temperature and the heat recovery requirement is a hot water requirement, then:
And controlling the first regulating valve to be communicated with a passage between the heat recovery coil and the water inlet end of the heating channel of the plate heat exchanger, and controlling the second regulating valve and the third regulating valve to be communicated with a passage between the water outlet end and the water supply end of the heating channel of the plate heat exchanger.
21. The apparatus of claim 19, wherein the first control unit is specifically configured to:
if the outdoor temperature is greater than or equal to a preset temperature and the heat recovery requirement is no hot water requirement, then:
The first regulating valve is controlled to be communicated with a passage between the water return end and the water inlet end of the heating channel of the plate heat exchanger, and the second regulating valve and the third regulating valve are controlled to be communicated with a passage between the water outlet end of the heating channel of the plate heat exchanger and the cooling tower.
22. The apparatus of claim 19, wherein the first control unit is specifically configured to:
if the outdoor temperature is less than the preset temperature and the heat recovery requirement is a hot water requirement, then:
And controlling the first regulating valve, the second regulating valve and the third regulating valve to communicate a passage between the heat recovery coil and the water supply end.
23. The apparatus of claim 19, wherein the first control unit is specifically configured to:
If the outdoor temperature is less than the preset temperature and the heat recovery requirement is no hot water requirement, then:
and controlling the first regulating valve, the second regulating valve and the third regulating valve to be closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211383386.XA CN118031405A (en) | 2022-11-07 | 2022-11-07 | Machine room air conditioner and operation control method and device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211383386.XA CN118031405A (en) | 2022-11-07 | 2022-11-07 | Machine room air conditioner and operation control method and device thereof |
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| CN118031405A true CN118031405A (en) | 2024-05-14 |
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| CN202211383386.XA Pending CN118031405A (en) | 2022-11-07 | 2022-11-07 | Machine room air conditioner and operation control method and device thereof |
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- 2022-11-07 CN CN202211383386.XA patent/CN118031405A/en active Pending
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