WO2023045287A1 - Système de pompe à chaleur à divisions multiples et procédé de commande associé, et support de stockage lisible par ordinateur - Google Patents

Système de pompe à chaleur à divisions multiples et procédé de commande associé, et support de stockage lisible par ordinateur Download PDF

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Publication number
WO2023045287A1
WO2023045287A1 PCT/CN2022/082329 CN2022082329W WO2023045287A1 WO 2023045287 A1 WO2023045287 A1 WO 2023045287A1 CN 2022082329 W CN2022082329 W CN 2022082329W WO 2023045287 A1 WO2023045287 A1 WO 2023045287A1
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WIPO (PCT)
Prior art keywords
temperature
value
target
frequency
indoor unit
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PCT/CN2022/082329
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English (en)
Chinese (zh)
Inventor
陶骙
钟文朝
黎顺全
张�浩
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广东美的制冷设备有限公司
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Priority to EP22871352.5A priority Critical patent/EP4379272A1/fr
Publication of WO2023045287A1 publication Critical patent/WO2023045287A1/fr

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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
    • 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
    • F24F5/0003—Exclusively-fluid systems
    • 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
    • F24F11/70—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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • 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
    • F25B30/00—Heat pumps
    • F25B30/02—Heat pumps of the compression type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F25B49/022—Compressor control arrangements
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/20—Heat-exchange fluid temperature
    • 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
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/003—Indoor unit with water as a heat sink or heat source
    • 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
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
    • F25B2313/0233—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units in parallel arrangements
    • 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
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/07—Details of compressors or related parts
    • F25B2400/077—Compressor control units, e.g. terminal boxes, mounted on the compressor casing wall containing for example starter, protection switches or connector contacts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/02—Compressor control
    • F25B2600/025—Compressor control by controlling speed
    • F25B2600/0253—Compressor control by controlling speed with variable speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/19—Pressures
    • F25B2700/193—Pressures of the compressor
    • F25B2700/1931—Discharge pressures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2103—Temperatures near a heat exchanger

Definitions

  • the present application relates to the technical field of multi-connected heat pump systems, and in particular to a control method of a multi-connected heat pump system, a multi-connected heat pump system and a computer-readable storage medium.
  • the air source heat pump adds a hydraulic module to provide capillary floor radiant heating, radiator heating, etc., and can also provide a heat source for the domestic water storage tank.
  • the operating frequency of the outdoor compressor is generally adjusted according to the preset fixed exhaust pressure or the temperature in the middle of the coil of the air duct inner unit, which is easy.
  • the output capacity of the compressor does not match the actual heat exchange demand in the room, resulting in the inability to effectively balance the indoor environment temperature regulation and the heat supply of the hydraulic module.
  • the main purpose of this application is to provide a control method for a multi-connected heat pump system, a multi-connected heat pump system, and a computer-readable storage medium, aiming at accurately matching the output capacity of the compressor with the actual heat exchange demand in the room, so that the indoor environment temperature can be adjusted Effectively balance with the heat supply of the hydraulic module.
  • the present application provides a control method for a multi-connected heat pump system
  • the multi-connected heat pump system includes a compressor, at least one hydraulic module and at least one air-conditioning indoor unit, the at least one hydraulic module and the at least one The indoor units of the air conditioner are all connected to the compressor
  • the control method of the multi-connected heat pump system includes the following steps:
  • the first energy demand information represents the heating capacity demand of the at least one air-conditioning indoor unit, so The second energy demand information characterizes the heating capacity demand of the at least one hydraulic module;
  • the operating frequency of the compressor is adjusted according to the target parameters corresponding to the first energy demand information and the second energy demand information.
  • the step of adjusting the operating frequency of the compressor according to the target parameters corresponding to the first energy demand information and the second energy demand information includes:
  • the operation of the compressor is adjusted according to the temperature of the indoor heat exchanger of the currently turned on air-conditioning indoor unit frequency, the target parameters include the indoor heat exchanger temperature;
  • the operating frequency of the compressor is adjusted according to the outlet water temperature of the hydraulic module, and the target parameter includes the outlet water temperature.
  • the step of temperature adjusting the operating frequency of the compressor comprises:
  • the compressor is controlled to operate at the first target frequency.
  • the step of determining the first frequency correction value according to the temperature of the indoor heat exchanger and the preset temperature of the heat exchanger includes:
  • a first target correction value is the first frequency correction value
  • the second target correction value is the first frequency correction value
  • the second preset temperature difference is less than or equal to the first preset temperature difference, the first target frequency corresponding to the first target correction value is greater than the initial frequency, and the second target correction value corresponds to the The first target frequency is less than the initial frequency.
  • the step before the step of adjusting the operating frequency of the compressor according to the temperature of the indoor heat exchanger of the currently turned-on air conditioner indoor unit, the step further includes:
  • the discharge pressure of the compressor is acquired;
  • the first energy demand information is that the heating capacity demanded by the at least one air-conditioning indoor unit is greater than a first preset value, obtain the rated heating capacity of the currently turned on air-conditioning indoor unit and its corresponding indoor heat exchanger coil temperature;
  • the indoor heat exchanger temperature is determined according to the coil temperature and its corresponding weight value.
  • the step of acquiring the first energy demand information of the at least one air conditioner indoor unit and the second energy demand information of the at least one hydraulic module it further includes:
  • the first energy demand information is that the heating capacity required by the at least one air-conditioning indoor unit is greater than a first preset value, acquiring installation status information of the pressure sensor on the discharge side of the compressor;
  • the step of obtaining the discharge temperature of the compressor and the step of determining the current open pressure sensor according to the discharge temperature are performed. Steps for the condensing temperature of the indoor unit of the air conditioner;
  • the step of obtaining the rated heat output of the currently turned on air conditioner indoor unit and the coil temperature of the corresponding indoor heat exchanger is performed. steps, the step of determining the weight value of each currently turned on air-conditioning indoor unit according to the rated heat output, and the step of determining the temperature of the indoor heat exchanger according to the coil temperature and its corresponding weight value.
  • the step of adjusting the operating frequency of the compressor according to the outlet water temperature of the hydraulic module includes:
  • the compressor is controlled to operate at the second target frequency.
  • the step of determining the current first condensation temperature of the hydraulic module according to the outlet water temperature includes:
  • the first condensation temperature is determined according to the reference condensation temperature.
  • the step of determining the temperature correction value according to the outlet water temperature and the set water temperature of the hydraulic module includes:
  • the temperature adjustment value shows an increasing trend with the increase of the second temperature difference value, and/or, the temperature adjustment value shows a decreasing trend with the decrease of the second temperature difference value.
  • the step of determining the first condensation temperature according to the reference condensation temperature includes:
  • the reference condensing temperature is the first condensing temperature
  • the minimum critical value is the first condensing temperature
  • the maximum critical value is the first condensing temperature.
  • the step of determining the first condensing temperature according to the reference condensing temperature it further includes:
  • the maximum critical value is determined according to the outdoor ambient temperature and the operating frequency.
  • the step of determining a second frequency correction value according to the first condensing temperature and the target condensing temperature includes:
  • a third target correction value is the second frequency correction value
  • a fourth target correction value is the second frequency correction value
  • the fourth preset temperature difference is less than or equal to the third preset temperature difference, the second target frequency corresponding to the third target correction value is greater than the initial frequency, and the fourth target correction value corresponds to the The second target frequency is less than the initial frequency.
  • the response to the first energy demand information is that the heating capacity required by the at least one air conditioner indoor unit is less than or equal to the first preset value
  • the second energy demand information is the In the case where the heating capacity required by at least one hydraulic module is greater than the second preset value
  • the step of adjusting the operating frequency of the compressor according to the outlet water temperature of the hydraulic module includes:
  • the compressor is controlled to operate at the third target frequency.
  • the first target temperature difference is the temperature difference between the first actual condensing temperature and the set condensing temperature of the hydraulic module at the current moment
  • the second target temperature difference is the last adjustment based on the outlet water temperature of the hydraulic module.
  • the temperature difference between the second actual condensing temperature of the hydraulic module and the set condensing temperature at the frequency of the compressor, the first actual condensing temperature is the parameter corresponding to the outlet water temperature, and the second actual condensing temperature is the set Describe the parameters corresponding to the outlet water temperature.
  • the step of determining the third target frequency according to the first target temperature difference, the second target temperature difference, the outlet water temperature and the set water temperature of the hydraulic module includes:
  • the third target frequency shows an increasing trend with the increase of the third temperature difference value
  • the third target frequency shows an increasing trend with the increase of the fourth temperature difference value
  • the step of adjusting the operating frequency of the compressor according to the target parameters corresponding to the first energy demand information and the second energy demand information it further includes:
  • the first target heat exchange temperature and/or the second target heat exchange temperature are determined according to the first energy demand information and the second energy demand information.
  • the step of adjusting the opening degree of the first electronic expansion valve of the air conditioner indoor unit includes:
  • the first opening degree adjustment value tends to increase with the increase of the first deviation value.
  • the step of adjusting the opening degree of the second electronic expansion valve of the hydraulic module includes:
  • the second opening degree adjustment value tends to increase with the increase of the second deviation value.
  • the present application also proposes a multi-connection heat pump system, the multi-connection heat pump system includes:
  • At least one air-conditioning indoor unit, the at least one hydraulic module and the at least one air-conditioning indoor unit are both connected to the compressor;
  • the control device, the compressor, the at least one hydraulic module, and the at least one air-conditioning indoor unit are all connected to the control device, and the control device includes: a memory, a processor, and stored in the memory and can be The control program of the multi-connection heat pump system running on the processor, when the control program of the multi-connection heat pump system is executed by the processor, the steps of the control method of the multi-connection heat pump system as described in any one of the above are realized.
  • the present application also proposes a computer-readable storage medium, the computer-readable storage medium stores a control program of a multi-connection heat pump system, and the control program of the multi-connection heat pump system is executed by a processor When implementing the steps of the control method for a multi-connected heat pump system as described in any one of the above.
  • a control method for a multi-connected heat pump system proposed in this application is based on a multi-connected heat pump system in which a compressor is connected to at least one hydraulic module and at least one air-conditioning indoor unit.
  • the first energy demand information and the second energy demand information determine the corresponding target parameters to regulate the frequency of the compressor, so as to ensure that the output capacity of the compressor can meet the actual heat exchange demand of the indoor unit of the air conditioner and the hydraulic module at the same time, and realize the compressor.
  • the output capacity is accurately matched with the actual indoor heat exchange demand, so that the indoor environment temperature adjustment and the heat supply of the hydraulic module can be effectively balanced.
  • Fig. 1 is the schematic structural diagram of the multi-line heat pump system of the present application
  • FIG. 2 is a schematic diagram of the hardware structure involved in the operation of an embodiment of the multi-connected heat pump system of the present application
  • FIG. 3 is a schematic flowchart of an embodiment of a control method for a multi-connected heat pump system of the present application
  • FIG. 4 is a schematic flowchart of another embodiment of the control method of the multi-connected heat pump system of the present application.
  • Fig. 5 is a schematic flowchart of another embodiment of the control method of the multi-connected heat pump system of the present application.
  • Fig. 6 is a numerical relationship diagram between the second temperature difference value and the temperature adjustment value involved in the embodiment in Fig. 5;
  • Fig. 7 is a schematic flowchart of another embodiment of the control method of the multi-connected heat pump system of the present application.
  • Fig. 8 is a schematic flowchart of another embodiment of the control method of the multi-connected heat pump system of the present application.
  • the main solution of the embodiment of the present application is to propose a control method based on a multi-connected heat pump system
  • the multi-connected heat pump system includes a compressor, at least one hydraulic module and at least one air-conditioning indoor unit, the at least one hydraulic module and the The at least one air-conditioning indoor unit is connected to the compressor, and the method includes: acquiring first energy demand information of the at least one air-conditioning indoor unit and second energy demand information of the at least one hydraulic module; the first The energy demand information represents the heating capacity demand of the at least one air conditioner indoor unit, and the second energy demand information represents the heating capacity demand of the at least one hydraulic module; according to the first energy demand information and the second The target parameter corresponding to the information can be used to adjust the operating frequency of the compressor.
  • the operating frequency of the outdoor compressor is generally set according to the preset fixed exhaust pressure or the temperature in the middle of the coil of the air ducted internal unit. It is easy to make the output capacity of the compressor mismatch with the actual heat exchange demand in the room, resulting in frequent shutdown of the compressor.
  • This application provides the above-mentioned solution, aiming to realize the precise matching between the output capacity of the compressor and the actual heat exchange demand in the room, so that the indoor environment temperature adjustment and the heat supply of the hydraulic module can be effectively balanced.
  • the embodiment of the present application proposes a multi-connection heat pump system.
  • the multi-connected heat pump system includes a compressor 1, at least one hydraulic module 2, at least one air conditioner indoor unit 3 and a control device.
  • the compressor 1, at least one hydraulic module 2, and at least one air conditioner indoor unit 3 are all connected to the control device.
  • the number of air-conditioning indoor units 3 and hydraulic modules 2 is more than one. In other embodiments, the number of air-conditioning indoor units 3 and hydraulic modules 2 can also be set according to actual needs.
  • At least one hydraulic module 2 and at least one air conditioner indoor unit 3 can be arranged in the same space or distributed in different space areas according to actual needs.
  • the different spatial regions here specifically refer to mutually separated spatial regions.
  • the hydraulic module 2 is provided with a water channel and a refrigerant flow channel.
  • a first electronic expansion valve 21 is arranged on the refrigerant flow path to regulate the refrigerant flow in the refrigerant flow path.
  • the refrigerant flow path exchanges heat with the water path to provide heat for the water in the water path.
  • the compressor 1 , the outdoor heat exchanger 4 , the throttling device and the refrigerant flow path in the hydraulic module 2 are sequentially connected to form a refrigerant circulation loop.
  • the inlet and outlet of the refrigerant flow path of the hydraulic module 2 are provided with a first temperature sensor 01 and a second temperature sensor 02 respectively, which are set to detect the first temperature of the refrigerant inlet and the second temperature of the refrigerant outlet of the hydraulic module 2 .
  • the outlet of the water flow path of the hydraulic module 2 is provided with a third temperature sensor 03 to detect the outlet water temperature of the hydraulic module 2 .
  • the hydraulic module 2 can be connected with at least one floor heating module and/or at least one hot water module to provide heat for the floor heating module (such as a capillary floor or a radiator, etc.) and/or the hot water module.
  • the water outlet of the hydraulic module 2 is connected to the water inlet of the floor heating module, the water outlet of the floor heating module is connected to the water inlet of the hydraulic module 2, and the water circuit in the hydraulic module 2 is connected to the floor heating module to form a water circulation loop;
  • the hydraulic module 2 The water outlet of the hot water module is connected to the water inlet of the hot water module, the water outlet of the hot water module is connected to the water inlet of the hydraulic module 2, and the water circuit in the hydraulic module 2 is connected with the hot water module to form a water circulation loop.
  • the air conditioner indoor unit 3 includes an indoor heat exchanger 31 and a second electronic expansion valve 32 connected to the indoor heat exchanger 31 , the second electronic expansion valve can regulate the flow of refrigerant flowing into the indoor heat exchanger 31 .
  • the air-conditioning indoor unit 3 also includes a fan arranged corresponding to the indoor heat exchanger 31, which can drive the indoor air to pass through the indoor heat exchanger 31 for heat exchange and drive the heat-exchanged air into the room.
  • the indoor heat exchanger 31 is provided with a fourth temperature sensor 04 configured to detect the coil temperature of the indoor heat exchanger 31 .
  • the discharge side of the compressor may be provided with a pressure sensor 05, which is configured to detect the discharge pressure of the compressor.
  • the control device of the multi-connected heat pump system includes: a processor 1001 (such as a CPU), a memory 1002, a timer 1003 and the like.
  • the memory 1002 can be a high-speed RAM memory, or a stable memory (non-volatile memory), such as a disk memory.
  • the memory 1002 may also be a storage device independent of the foregoing processor 1001 .
  • the above-mentioned compressor 1, hydraulic module 2, air conditioner indoor unit 3, first temperature sensor 01, second temperature sensor 02, third temperature sensor 03, fourth temperature sensor 04 and pressure sensor 05 can all be connected to the control device here .
  • FIG. 2 does not constitute a limitation to the device, and may include more or less components than shown in the figure, or combine some components, or arrange different components.
  • the memory 1002 which is a kind of computer-readable storage medium, may include the control program of the multi-line heat pump system.
  • the processor 1001 can be configured to call the control program of the multi-connected heat pump system stored in the memory 1002, and execute related steps of the control method of the multi-connected heat pump system in the following embodiments.
  • the embodiment of the present application also provides a control method for a multi-connection heat pump system, which is applied to control the above-mentioned multi-connection heat pump system.
  • control method of the multi-connected heat pump system includes:
  • Step S10 acquiring the first energy demand information of the at least one air-conditioning indoor unit and the second energy demand information of the at least one hydraulic module;
  • the first energy demand information represents the heating capacity demand of the at least one air-conditioning indoor unit situation, the second energy demand information characterizes the heating capacity demand of the at least one hydraulic module;
  • the first energy demand information represents the heating capacity demand of all air conditioner indoor units connected to the compressor
  • the second energy demand information represents the heating capacity demand of all hydraulic modules connected to the compressor.
  • the first energy demand here can be determined based on whether all air-conditioning indoor units are turned on and the temperature attainment of the room temperature when turned on (such as whether the indoor temperature reaches the set temperature, the temperature deviation between the indoor temperature and the set temperature, etc.)
  • the information can be based on whether all hydraulic modules are turned on and the temperature of the water temperature when turned on (such as whether the outlet water temperature reaches the set water temperature, the temperature deviation between the outlet water temperature and the set water temperature, etc.).
  • the first energy demand information here can be characterized by the first energy demand value, and the first energy demand value is greater than the first set value (for example, greater than 0), indicating that the heating capacity required by at least one air-conditioning indoor unit is greater than the first preset value (such as greater than 0W), that is, there is currently an open air-conditioning indoor unit and the room temperature of the operating space of the open air-conditioning indoor unit has not reached the set temperature of the indoor unit; the first energy demand value is less than or equal to the first set value (eg equal to 0) indicates that the heating capacity required by at least one air-conditioning indoor unit is less than or equal to the first preset value (eg equal to 0W), that is, there are currently activated air-conditioning indoor units and the room temperature of the active space of the activated air-conditioning indoor units has reached The set temperature of the indoor unit is reached.
  • the first set value for example, greater than 0
  • the first preset value such as greater than 0W
  • the second energy demand information here can be characterized by a second energy demand value, and the second energy demand value is greater than the second set value (for example, greater than 0) indicating that the heating capacity required by at least one hydraulic module is greater than the second preset value (for example, greater than 0W), that is, there is currently an open hydraulic module and the water temperature (such as the outlet water temperature) of the open hydraulic module does not reach the set water temperature of the hydraulic module; the second energy demand value is less than or equal to the second set value (such as equal to 0) indicates that the heating capacity required by at least one hydraulic module is less than or equal to the second preset value (for example, equal to 0W), that is, there is currently an activated hydraulic module and the water temperature of the activated hydraulic module has reached the set water temperature of the hydraulic module.
  • the second energy demand value is greater than the second set value (for example, greater than 0) indicating that the heating capacity required by at least one hydraulic module is greater than the second preset value (for example, greater than 0W), that is
  • Step S20 adjusting the operating frequency of the compressor according to the target parameters corresponding to the first energy demand information and the second energy demand information.
  • the target parameter here is specifically an adjustment basis for adjusting the operating frequency of the compressor.
  • the target parameter can be the first operating characteristic parameter of the indoor unit of the air conditioner (indoor heat exchanger temperature, the room temperature of the space where the indoor unit is located and/or the speed of the fan in the indoor unit, etc.) and the second operating characteristic parameter of the hydraulic module (such as water temperature, hydraulic power, etc.) One of the electronic expansion valve opening of the module and/or the room temperature of the space where the hydraulic module is located, etc.).
  • the first operating characteristic parameter and the second operating characteristic parameter may be determined as the target parameter according to the first energy demand information and the second energy demand information, and the operating frequency of the compressor may be regulated according to the determined target parameter .
  • the target frequency of the compressor operation can be determined according to the target parameters, and the compressor can be controlled to run at the target frequency; the adjustment direction of the compressor frequency can also be determined according to the target parameters (such as increasing, maintaining the same or decreasing), according to the set The determined adjustment direction adjusts the operating frequency of the compressor.
  • the target parameter may also include the first operating characteristic parameter and the second operating characteristic parameter mentioned above.
  • Different first energy demand information and different second energy demand information may correspond to different first operating characteristic parameters and second operating characteristic parameters.
  • the first operating characteristic parameter and the second operating characteristic parameter and their corresponding first weight value and second weight value can be determined according to the first energy demand information and the second energy demand information, and the first operating characteristic parameter can be determined according to The first frequency, the second frequency is determined according to the second operating characteristic parameter, and the target frequency for compressor operation is calculated according to the first frequency and its corresponding first weight value, the second frequency and its corresponding second weight value, according to the The determined target frequency controls compressor operation.
  • a control method for a multi-connected heat pump system proposed in the embodiment of the present application is based on a multi-connected heat pump system in which a compressor is connected to at least one hydraulic module and at least one air-conditioning indoor unit.
  • the method is based on characterizing the actual needs of the air-conditioning indoor unit and the hydraulic module
  • the first energy demand information and the second energy demand information of the heating capacity determine the corresponding target parameters to regulate the frequency of the compressor, so as to ensure that the output capacity of the compressor can meet the actual heat exchange demand of the indoor unit of the air conditioner and the hydraulic module at the same time, and realize the compression
  • the output capacity of the machine is accurately matched with the actual indoor heat exchange demand, so that the indoor environment temperature adjustment and the heat supply of the hydraulic module can be effectively balanced.
  • step S20 includes:
  • the operation of the compressor is adjusted according to the temperature of the indoor heat exchanger of the currently turned on air-conditioning indoor unit frequency, the target parameters include the indoor heat exchanger temperature;
  • the first energy demand information is when the heating capacity required by at least one air-conditioning indoor unit is greater than the first preset value, that is, when the air-conditioning indoor unit connected to the compressor has energy demand or has a large energy demand, regardless of whether the second energy demand information is Whether the heating capacity required by at least one hydraulic module is greater than the second preset value or is less than or equal to the second preset value, at this time, based on the temperature of the indoor heat exchangers of all air-conditioning indoor units currently turned on or the required heating capacity is greater than the first preset value
  • the temperature of the indoor heat exchanger of the air conditioner indoor unit regulates the operating frequency of the compressor, which is conducive to ensuring that the heat output by the compressor can meet the temperature adjustment requirements of the space where the indoor unit is located and the heating demand of the hydraulic module.
  • the temperature of the indoor heat exchanger can be determined according to the temperature data detected by the temperature sensor installed on the coil of the indoor heat exchanger, or it can be determined according to the operating parameters related to the temperature of the indoor heat exchanger in the outdoor unit (such as the discharge pressure of the compressor and/or Exhaust temperature, etc.)
  • the operating frequency of the compressor is adjusted according to the outlet water temperature of the hydraulic module, and the target parameter includes the outlet water temperature.
  • the temperature of the outlet water can be detected by a temperature sensor arranged at the water outlet of the hydraulic module.
  • the first energy demand information is that the heating capacity required by at least one air conditioner indoor unit is less than or equal to the first preset value
  • the second energy demand information is that the heating capacity required by at least one hydraulic module is greater than the second preset value , that is, the indoor unit of the air conditioner connected to the compressor has no energy demand or the energy demand is small, while the hydraulic module connected to the compressor has energy demand or is relatively large.
  • the frequency is adjusted to ensure that the indoor environment temperature adjustment requirements are met while avoiding excessive heat output by the compressor, avoiding frequent shutdowns of the compressor caused by the outlet water temperature of the hydraulic module reaching the set water temperature, and ensuring the operation stability of the compressor and The continuity of the heat supply of the multi-connected heat pump system.
  • the first energy demand information is a first energy demand value determined based on the heating capacity required by all air-conditioning indoor units
  • the second energy demand information is a second energy demand value determined based on the heating capacity required by all hydraulic modules
  • the control method for the multi-connected heat pump system of the present application is proposed based on the above embodiments.
  • the first energy demand information is that the heating capacity demanded by the at least one air-conditioning indoor unit is greater than a first preset value, according to the currently turned on air-conditioning indoor unit
  • the step of adjusting the operating frequency of the compressor by the temperature of the indoor heat exchanger comprises:
  • Step S21 in response to the fact that the first energy demand information is that the heating capacity demanded by the at least one air conditioner indoor unit is greater than a first preset value, determine a second heat exchanger temperature according to the indoor heat exchanger temperature and the preset heat exchanger temperature. a frequency correction value;
  • the preset heat exchanger temperature specifically refers to a preset target value of the temperature that needs to be reached by the indoor heat exchanger of the air conditioner indoor unit during the heating process.
  • Different indoor heat exchanger temperatures and preset heat exchanger temperatures may correspond to different first frequency correction values.
  • a first correspondence between the temperature of the indoor heat exchanger, the preset temperature of the heat exchanger, and the first frequency correction value is established in advance, and the first correspondence can be a calculation relationship, a mapping relationship, and the like.
  • the current first frequency correction value can be obtained by looking up a table or calculating according to the temperature of the indoor heat exchanger and the preset temperature of the heat exchanger.
  • a first temperature difference value between the indoor heat exchanger temperature and the preset heat exchanger temperature is determined; in response to the first temperature difference value being greater than or equal to the first preset temperature difference
  • the first target correction value is the first frequency correction value
  • the second target correction value is the first frequency correction value
  • the second preset temperature difference is less than or equal to the first preset temperature difference, the first target frequency corresponding to the first target correction value is greater than the initial frequency, and the first target frequency corresponding to the second target correction value
  • the target frequency is less than the initial frequency.
  • the first temperature difference is the difference between the preset heat exchanger temperature M and the indoor heat exchanger temperature N (ie M-N), the first preset temperature difference is greater than 0, and the second preset temperature difference is less than 0 . Based on this, when the first temperature difference value is greater than or equal to the first preset temperature difference, it indicates that the preset heat exchanger temperature is higher than the indoor heat exchanger temperature, and the deviation is large.
  • the first target correction value is used to increase the initial frequency to obtain the first
  • a target frequency is conducive to quickly increasing the actual heat exchange temperature of the indoor unit of the air conditioner to the preset heat exchanger temperature; when the first temperature difference is smaller than the second preset temperature difference, it indicates that the preset heat exchanger temperature is lower than the indoor heat exchanger temperature , and the deviation is large, at this time, the first target frequency is obtained by reducing the initial frequency by the second target correction value.
  • the first temperature difference (°C( X ⁇ -3 -3 ⁇ X ⁇ -2 -2 ⁇ X ⁇ -1 -1 ⁇ X ⁇ 1 1 ⁇ X ⁇ 2 2 ⁇ X ⁇ 3 X ⁇ 3 Frequency correction value (Hz( -5 -2 -1 0 +1 +2 +3
  • 1 in the above table is the above-mentioned first preset temperature
  • -1 in the above table is the above-mentioned second preset temperature
  • Step S22 obtaining a first target frequency after adjusting the initial frequency of the compressor according to the first frequency correction value
  • the initial frequency here can be a preset fixed frequency, or the current operating frequency of the compressor.
  • the initial frequency may be increased, decreased or maintained according to the first frequency correction value to obtain the first target frequency.
  • the first frequency correction value can represent both the frequency correction direction and the frequency correction magnitude, and the sum of the first frequency correction value and the initial frequency can be used as the first target frequency.
  • the first frequency correction value may only represent the frequency correction range, then after determining the frequency adjustment direction according to the indoor heat exchanger temperature and the preset heat exchanger temperature, when the frequency adjustment direction is to reduce the initial frequency, The difference between the initial frequency and the first frequency correction value can be used as the first target frequency; when the frequency adjustment direction is to increase the initial frequency, the sum of the initial frequency and the first frequency correction value can be used as the first target frequency.
  • Step S23 controlling the compressor to run at the first target frequency.
  • the actual heat exchange temperature of the air conditioner indoor unit can maintain the preset heat exchanger temperature.
  • the frequency of the compressor is regulated in the above-mentioned manner to ensure that the heat exchange temperature of the air-conditioning indoor unit can be maintained at the preset heat exchanger temperature , to meet the temperature regulation needs of the indoor environment.
  • the currently opened air conditioner may be obtained in one of the following two ways:
  • the temperature of the indoor heat exchanger of the indoor unit of the air conditioner is used to regulate the frequency of the compressor:
  • Way 1 In response to the fact that the first energy demand information is that the heating capacity required by the at least one air-conditioning indoor unit is greater than a first preset value, obtain the discharge pressure of the compressor; determine according to the discharge pressure The condensing temperature of the currently turned on air conditioner indoor unit, the temperature of the indoor heat exchanger includes the condensing temperature.
  • a quantitative relationship between the exhaust pressure and the condensing temperature may be preset, and based on the quantitative relationship, the condensing temperature of the currently turned on air-conditioning indoor unit is determined through calculation of the exhaust pressure.
  • a mapping table of exhaust pressure and condensing temperature may be preset, and the condensing temperature of the currently turned on air-conditioning indoor unit may be obtained by querying the mapping table through the exhaust pressure.
  • the condensing temperature here represents the temperature value of the comprehensive situation of the saturation temperatures of the indoor heat exchangers of all the indoor air conditioners that are currently turned on during the condensation process.
  • Way 2 In response to the fact that the first energy demand information is that the heating capacity demanded by the at least one air-conditioning indoor unit is greater than a first preset value, obtain the rated heating capacity of the currently turned-on air-conditioning indoor unit and its corresponding indoor heat exchange
  • the coil temperature of the air conditioner; the weight value of each currently turned on air conditioner indoor unit is determined according to the rated heat output; the indoor heat exchanger temperature is determined according to the coil temperature and its corresponding weight value.
  • the rated heat output is n1, n2, n3...nx KW respectively, and the coil temperature of each indoor unit corresponds to T21, T22, T23...T2x°C, then the temperature of the indoor heat exchanger
  • step S10 further comprising: in response to the fact that the first energy demand information indicates that the heating capacity demanded by the at least one air-conditioning indoor unit is greater than a first preset value, acquiring the compression The installation status information of the pressure sensor on the exhaust side of the compressor; in response to the fact that the installation status information is that the pressure sensor is not installed on the exhaust side of the compressor, the temperature of the indoor heat exchanger is obtained according to the above method 1; in response to the The above installation status information refers to the situation that the pressure sensor has been installed on the exhaust side of the compressor, and the temperature of the indoor heat exchanger can be obtained according to the second method above.
  • the installation state information here can be determined by obtaining the instruction input by the user.
  • the response to the first energy demand information is that the heating capacity demanded by the at least one air conditioner indoor unit is less than or equal to the first preset value, and the second energy demand
  • the step of adjusting the operating frequency of the compressor according to the outlet water temperature of the hydraulic module includes:
  • Step S201 in response to the first energy demand information being that the heating capacity required by the at least one air conditioner indoor unit is less than or equal to the first preset value, and the second energy demand information is that the at least one hydraulic module When the required heating capacity is greater than the second preset value, determine the current first condensation temperature of the hydraulic module according to the outlet water temperature;
  • the first condensation temperature here is specifically the saturation temperature of the water output by the hydraulic module during the heat exchange process (such as the saturation temperature of the capillary floor or the radiator during the heat exchange process).
  • the second corresponding relationship between the outlet water temperature and the first condensation temperature can be preset, and can be a calculation formula, a mapping table, and the like. Based on the second corresponding relationship, the outlet water temperature can be calculated or the mapping table can be queried to obtain the first condensation temperature here.
  • Step S202 determining a second frequency correction value according to the first condensing temperature and the target condensing temperature
  • the target condensation temperature is specifically the target value of the preset temperature that the hydraulic module needs to reach during the heating process.
  • Different first condensing temperatures and target condensing temperatures may correspond to different second frequency correction values.
  • a third corresponding relationship among the first condensing temperature, the target condensing temperature, and the second frequency correction value is established in advance, and the third corresponding relationship may be a calculation relationship, a mapping relationship, and the like. Based on the third corresponding relationship, the current second frequency correction value can be obtained by looking up a table or calculating according to the first condensing temperature and the target condensing temperature.
  • a third temperature difference between the target condensation temperature and the second condensation temperature is determined; when the third temperature difference is greater than or equal to a third preset temperature difference, the third temperature difference is determined.
  • the target correction value is the second frequency correction value; when the third temperature difference is less than the fourth preset temperature difference, determine the fourth target correction value as the second frequency correction value; the fourth preset temperature difference is less than or equal to the third preset temperature difference, the second target frequency corresponding to the third target correction value is greater than the initial frequency, and the second target frequency corresponding to the fourth target correction value is less than the initial frequency frequency.
  • the third temperature difference is the difference between the preset heat exchanger temperature P and the indoor heat exchanger temperature Q (ie P-Q), the third preset temperature difference is greater than 0, and the fourth preset temperature difference is less than 0 .
  • the third temperature difference value is greater than or equal to the third preset temperature difference, it indicates that the target condensation temperature is greater than the first condensation temperature, and the deviation is relatively large.
  • the second target frequency is obtained by increasing the initial frequency by the third target correction value, It is conducive to the rapid increase of the actual heat exchange temperature of the hydraulic module to the target condensation temperature; when the third temperature difference is less than the fourth preset temperature difference, it indicates that the target condensation temperature is lower than the first condensation temperature, and the deviation is large.
  • the fourth target is corrected The value reduces the initial frequency to get the second target frequency.
  • the corresponding frequency correction value can be determined according to the following table to adjust the initial frequency of the compressor:
  • the third temperature difference (°C( Y ⁇ -3 -3 ⁇ Y ⁇ -2 -2 ⁇ Y ⁇ -1 -1 ⁇ Y ⁇ 1 1 ⁇ Y ⁇ 2 2 ⁇ Y ⁇ 3 Y ⁇ 3 Frequency correction value (Hz( -5 -2 -1 0 +1 +2 +3
  • 1 in the above table is the above-mentioned third preset temperature
  • -1 in the above table is the above-mentioned fourth preset temperature
  • Step S203 obtaining a second target frequency after adjusting the initial frequency of the compressor according to the second frequency correction value
  • the initial frequency here can be a preset fixed frequency, or the current running frequency of the compressor.
  • the initial frequency may be increased, decreased or maintained according to the second frequency correction value to obtain the second target frequency.
  • the second frequency correction value can represent both the frequency correction direction and the frequency correction magnitude, and the sum of the second frequency correction value and the initial frequency can be used as the second target frequency.
  • the second frequency correction value may only represent the frequency correction range, then after the frequency adjustment direction is determined according to the indoor heat exchanger temperature and the preset heat exchanger temperature, when the frequency adjustment direction is to reduce the initial frequency, The difference between the initial frequency and the second frequency correction value can be used as the second target frequency; when the frequency adjustment direction is to increase the initial frequency, the sum of the initial frequency and the second frequency correction value can be used as the second target frequency.
  • Step S204 controlling the compressor to run at the second target frequency.
  • the frequency of the compressor is regulated according to the above-mentioned method, which can ensure the temperature regulation of the indoor environment While the demand is met, the output capacity of the compressor can match the heat demanded by the hydraulic module, so as to prevent the water temperature of the hydraulic module from reaching the set water temperature too quickly, and effectively prevent the compressor from frequently reaching the temperature and shutting down.
  • the step of determining the current first condensation temperature of the hydraulic module according to the outlet water temperature includes:
  • Step S201a determining a temperature correction value according to the outlet water temperature and the set water temperature of the hydraulic module
  • the set water temperature here is specifically the target value to be achieved by the outlet water temperature of the preset hydraulic module.
  • the set water temperature may be the temperature set by the user, or may be the temperature determined according to the target temperature set by the user for the target object heated by the hydraulic module.
  • the temperature correction value can be obtained by calculating the outlet water temperature and the set water temperature. For example, the difference between the outlet water temperature and the set temperature can be used as the temperature correction value.
  • the temperature correction value can also be obtained by querying the preset mapping table through the outlet water temperature and the set water temperature.
  • a second temperature difference between the set water temperature and the outlet water temperature is determined; a temperature adjustment value is determined according to the second temperature difference; and the setting is adjusted according to the temperature adjustment value.
  • the temperature correction value is obtained after the water temperature is fixed; wherein, the temperature adjustment value shows an increasing trend with the increase of the second temperature difference value, and/or, the temperature adjustment value increases with the decrease of the second temperature difference value A small decreasing trend.
  • the second temperature difference is specifically the difference between the set water temperature and the outlet water temperature; in other embodiments, the second temperature difference may also be the absolute value of the difference between the outlet water temperature and the set water temperature.
  • the second temperature difference value can be directly used as the temperature adjustment value, or the temperature adjustment value can be obtained by calculating the second temperature difference value or looking up a table based on the preset correspondence between the temperature difference and the adjustment value.
  • the variation trend of the outlet water temperature can be obtained, and the corresponding relationship between the temperature difference and the adjustment value can be obtained based on the variation trend of the outlet water temperature. Different variation trends correspond to different corresponding relationships.
  • the temperature adjustment value corresponding to the second temperature difference is determined based on the fourth correspondence, and when the outlet water temperature is decreasing, the temperature adjustment value corresponding to the second temperature difference is determined based on the fifth correspondence. As shown in FIG.
  • the temperature adjustment value corresponding to the outlet water temperature in the fourth correspondence relationship is greater than the temperature adjustment value corresponding to the outlet water temperature in the fifth correspondence relationship.
  • the sum of the set water temperature and the temperature adjustment value is used as the temperature correction value.
  • the difference, product or ratio between the set water temperature and the temperature adjustment value can also be used as the temperature correction value.
  • Step S201b obtaining a reference condensation temperature after correcting the preset condensation temperature according to the temperature correction value
  • the preset condensation temperature is specifically a preset temperature value, which may be a preset fixed value, or may be a temperature selected from multiple preset temperature values according to the current set water temperature of the hydraulic module.
  • the sum of the temperature correction value and the preset condensing temperature can be used as the reference condensing temperature.
  • the difference, product or ratio between the preset condensing temperature and the temperature correction value may also be used as the reference condensing temperature.
  • Step S201c determining the first condensation temperature according to the reference condensation temperature.
  • the reference condensing temperature obtained above can be directly used as the first condensing temperature, or the result after being corrected according to the preset fixed correction value can be used as the first condensing temperature, and the reference condensing temperature and the preset temperature interval can also be used Compared with the critical value, if the reference condensing temperature is within the preset temperature range, the reference condensing temperature can be directly used as the first condensing temperature; if the reference condensing temperature is outside the preset temperature range, the critical value of the preset temperature range can be used as the second - condensation temperature.
  • the preset temperature range can be a first temperature range, a second temperature range or a third temperature range
  • the first temperature range is a temperature range with a minimum critical value but not a maximum critical value
  • the second temperature range is a temperature range with a maximum critical value but not a maximum critical value.
  • the temperature interval does not have a minimum critical value
  • the third temperature interval is a temperature interval with both a minimum critical value and a maximum critical value.
  • the first condensing temperature is Tw_cH
  • Tw-out is the outlet water temperature
  • Tw_cH0 is the preset condensing temperature (default 45°C, recommended value 40452°C)
  • T1S is the set water temperature
  • k is the temperature correction value
  • C is the preset constant (default 45°C, recommended value 35450°C)
  • ⁇ TWS is the second temperature difference value
  • ⁇ Trs is an intermediate parameter determined based on ⁇ TWS.
  • ⁇ Trs corresponding to ⁇ TWS is determined based on FIG. 2 , then k is calculated by ⁇ Trs and formula (2), and the first condensation temperature is further calculated by formula (1).
  • the first condensing temperature is obtained after correcting the preset condensing temperature with the temperature correction value determined by combining the outlet water temperature of the hydraulic module and the set temperature, which can ensure that the obtained first condensing temperature can accurately represent the current hydraulic module To ensure the accuracy of compressor frequency regulation based on the determined first condensing temperature, to ensure that the output capacity of the compressor matches the actual heating demand of the hydraulic module, and to effectively avoid frequent shutdowns of the compressor .
  • the above-mentioned process of determining the first condensing temperature according to the reference condensing temperature is specifically as follows: in response to the reference condensing temperature being within a preset temperature range, the reference condensing temperature is the A first condensation temperature; in response to the reference condensation temperature being less than a minimum critical value of the preset temperature range, the minimum critical value being the first condensation temperature; in response to the reference condensation temperature being greater than the preset temperature A maximum critical value of the interval, where the maximum critical value is the first condensation temperature.
  • the maximum critical value and the minimum critical value may be preset fixed temperature values, or may be parameter values determined according to the current operating conditions of the multi-connected heat pump system.
  • the recommended minimum critical value of the preset temperature range is 30°C, and the range is 25435°C.
  • the value of the first condensing temperature is limited by the preset temperature range, which can prevent the operating frequency of the compressor from being too high or too low due to the first condensing temperature being too high or too low, so as to ensure reliable and stable operation of the compressor.
  • the step of determining the first condensing temperature according to the reference condensing temperature it also includes: acquiring the outdoor ambient temperature and the current operating frequency of the compressor; The operating frequency determines the maximum threshold. Different outdoor ambient temperatures and different operating frequencies correspond to different maximum critical values.
  • the maximum critical value is obtained by querying a preset mapping table through the outdoor ambient temperature and operating frequency. In other embodiments, the maximum critical value here can also be obtained by calculating the outdoor ambient temperature, operating frequency and a preset formula.
  • the maximum critical value can be obtained by querying the following table through the outdoor ambient temperature T4 and compressor frequency F:
  • the maximum critical value of the first condensing temperature is determined in combination with the outdoor ambient temperature and the current operating frequency of the compressor, so that the first condensing temperature is limited based on the maximum critical value, ensuring that the operating frequency of the compressor can be adjusted according to the first condensing temperature. Further improve the reliability and stability of compressor operation.
  • the response to the first energy demand information is that the heating capacity demanded by the at least one air conditioner indoor unit is less than or equal to the first preset value, and the second energy demand
  • the step of adjusting the operating frequency of the compressor according to the outlet water temperature of the hydraulic module includes:
  • Step S210 in response to the first energy demand information being that the heating capacity required by the at least one air conditioner indoor unit is less than or equal to the first preset value, and the second energy demand information being that the at least one hydraulic module When the required heating capacity is greater than the second preset value, the third target frequency is determined according to the first target temperature difference, the second target temperature difference, the outlet water temperature, and the set water temperature of the hydraulic module;
  • Step S220 controlling the compressor to run at the third target frequency.
  • the first target temperature difference is the temperature difference between the first actual condensing temperature and the set condensing temperature of the hydraulic module at the current moment
  • the second target temperature difference is the last adjustment based on the outlet water temperature of the hydraulic module.
  • the temperature difference between the second actual condensing temperature of the hydraulic module and the set condensing temperature at the frequency of the compressor, the first actual condensing temperature is the parameter corresponding to the outlet water temperature, and the second actual condensing temperature is the set Describe the parameters corresponding to the outlet water temperature.
  • the outlet water temperature here is equivalent to the outlet water temperature at the corresponding moment.
  • the process of determining the first actual condensing temperature and the second actual condensing temperature may refer to the above-mentioned determining process of the first condensing temperature by analogy, which will not be repeated here.
  • the set condensation temperature here is specifically the target value to be achieved by the preset first condensation temperature.
  • step S10, step S210 and step S220 can be executed cyclically, based on which, in response to the first energy demand information, the heating capacity demanded by the at least one air-conditioning indoor unit is less than or equal to the first preset value, and
  • the second energy demand information is the situation that the heating capacity required by the at least one hydraulic module is greater than the second preset value, and the current third target frequency is combined with the first actual condensing temperature of the hydraulic module and the set value during the cycle
  • the temperature difference between the condensing temperatures and the temperature difference between the second actual condensing temperature of the hydraulic module and the set condensing temperature during the last third target frequency are determined.
  • the preset corresponding relationship between the first target temperature difference, the second target temperature difference, the outlet water temperature and the set water temperature and the third target frequency can be preset.
  • the preset corresponding relationship may be a calculation formula, a mapping table, and the like.
  • the third target frequency here can be obtained by calculating and/or looking up a table through the first target temperature difference, the second target temperature difference, the outlet water temperature and the set water temperature.
  • the third temperature difference between the first target temperature difference and the second target temperature difference is determined, and the fourth temperature difference between the set water temperature and the outlet water temperature is determined; according to the The third temperature difference value and the fourth temperature difference value determine a target frequency adjustment value; the third target frequency is obtained after adjusting the current operating frequency of the compressor according to the target frequency adjustment value; wherein, the third target frequency varies with The increase of the third temperature difference shows an increasing trend, and the third target frequency shows an increasing trend with the increase of the fourth temperature difference.
  • the third target frequency has a decreasing trend with the decrease of the third temperature difference value
  • the third target frequency has a decreasing trend with the decrease of the fourth temperature difference value.
  • the third temperature difference is the difference between the first target temperature difference and the second target temperature difference
  • the fourth temperature difference is the difference between the set water temperature and the outlet water temperature.
  • the third temperature difference may be the absolute value of the difference between the first target temperature difference and the second target temperature difference
  • the fourth temperature difference may be the absolute value of the difference between the set water temperature and the outlet water temperature.
  • the third target frequency Fr+ ⁇ F, where Fr is the current operating frequency of the compressor.
  • step S20 while or after step S20 is executed, it also includes:
  • Step S30 adjusting the opening degree of the first electronic expansion valve of the air-conditioning indoor unit, so that the temperature difference between the actual heat exchange temperature of the air-conditioning indoor unit and the first target heat exchange temperature is smaller than the first set temperature difference; and/or , adjust the opening degree of the second electronic expansion valve of the hydraulic module, so that the temperature difference between the actual heat exchange temperature of the hydraulic module and the second target heat exchange temperature is smaller than the second set temperature difference; wherein, according to the first The energy demand information and the second energy demand information determine the first target heat exchange temperature and/or the second target heat exchange temperature.
  • the first target heat exchange temperature here is the temperature of the currently turned-on air-conditioning indoor unit mentioned in the above embodiment.
  • Indoor heat exchanger temperature when the first energy demand information is that the heating capacity required by the at least one air conditioner indoor unit is less than or equal to the first preset value, and the second energy demand information is the at least one
  • the second target heat exchange temperature here is the first condensation temperature mentioned in the above embodiment.
  • the actual heat exchange temperature of the air conditioner indoor unit specifically refers to the coil temperature of the indoor heat exchanger; the actual heat exchange temperature of the hydraulic module is determined according to the temperature of the refrigerant flow path of the hydraulic module.
  • the first electronic expansion valve of each air-conditioning indoor unit is individually regulated based on its actual heat exchange temperature.
  • the opening is adjusted in different ways, so that the actual heat exchange temperature of each air-conditioning indoor unit can reach the first target heat exchange temperature;
  • the second electronic expansion valve of each hydraulic module is based on The actual heat exchange temperature is adjusted separately, and the opening of the corresponding second electronic expansion valve is adjusted in different ways if the actual heat exchange temperature is different, so that the actual heat exchange temperature of each hydraulic module can reach the second target heat exchange temperature.
  • the electronic expansion valves of the air-conditioning indoor units and hydraulic modules are regulated according to the above-mentioned method, which can ensure the refrigerant balance obtained by each indoor unit and hydraulic module, and ensure that the indoor environment temperature adjustment requirements meet the heating requirements of the hydraulic modules at the same time. It is also beneficial to further improve the energy efficiency of the system.
  • the first electronic expansion valve can be regulated according to the following process: obtain the current first heat exchange temperature of the air conditioner indoor unit; Determine the first opening adjustment value; adjust the opening of the first electronic expansion valve according to the first opening adjustment value; wherein, the first opening adjustment value increases with the increase of the first deviation value showing an increasing trend.
  • the coil temperature of the indoor heat exchanger in the indoor unit of the air conditioner may be acquired as the first heat exchange temperature here.
  • the first opening adjustment value here may be determined according to the difference or ratio between the first heat exchange temperature and the first target heat exchange temperature. When the first opening adjustment value is less than 0, reduce the opening of the first electronic expansion valve according to the first opening adjustment value; when the first opening adjustment value is greater than 0, increase the first electronic expansion valve opening according to the first opening adjustment value valve opening.
  • the second electronic expansion valve can be regulated according to the following process: obtain the first temperature of the refrigerant inlet of the hydraulic module and the second temperature of the refrigerant outlet of the hydraulic module; Determine the second heat exchange temperature of the hydraulic module; determine a second opening adjustment value according to a second deviation value between the second heat exchange temperature and the second target heat exchange temperature; adjust the second opening degree according to the second opening degree
  • the opening degree of the second electronic expansion valve is adjusted by a value; wherein, the second opening degree adjustment value tends to increase with the increase of the second deviation value.
  • the average value of the difference between the first temperature and the second temperature is used as the second heat exchange temperature to represent the equivalent coil temperature of the water circuit in the hydraulic module.
  • the minimum value of the first temperature and the second temperature or the difference between the first temperature and the second temperature may also be used as the second heat exchange temperature.
  • the second opening adjustment value here may be determined according to the difference or ratio between the second heat exchange temperature and the second target heat exchange temperature. When the second opening adjustment value is less than 0, reduce the second electronic expansion valve opening according to the second opening adjustment value; when the second opening adjustment value is greater than 0, increase the second electronic expansion valve opening according to the second opening adjustment value valve opening.
  • a new first opening adjustment value and/or The new second opening adjustment value adjusts the corresponding opening value of the electronic expansion valve.
  • the corresponding opening adjustment can be determined according to the following mapping table value:
  • the corresponding second electronic expansion valve When the second heat exchange temperature is lower than the second target heat exchange temperature and the temperature deviation between the two temperatures is greater than the threshold 3, the corresponding second electronic expansion valve operates with an increased opening and the opening adjustment increases with the temperature deviation It shows an increasing trend; when the second heat exchange temperature is greater than the second target heat exchange temperature and the temperature deviation between the two temperatures is greater than the threshold 4, the corresponding second electronic expansion valve operates with a reduced opening and the opening adjustment varies with The temperature deviation increases with increasing trend.
  • the embodiment of the present application also proposes a computer-readable storage medium, the computer-readable storage medium stores a control program of a multi-connection heat pump system, and when the control program of the multi-connection heat pump system is executed by a processor, the above Relevant steps of any embodiment of the control method for a multi-connected heat pump system.

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Abstract

Sont divulgués dans la présente demande un procédé de commande pour un système de pompe à chaleur à divisions multiples, le système de pompe à chaleur à divisions multiples comprenant un compresseur, au moins un module hydraulique et au moins une unité intérieure de climatiseur, l'au moins un module hydraulique et l'au moins une unité intérieure de climatiseur étant tous deux reliés au compresseur. Le procédé consiste : à acquérir des premières informations de demande d'énergie d'au moins une unité intérieure de climatiseur et des secondes informations de demande d'énergie d'au moins un module hydraulique, les premières informations de demande d'énergie représentant un état d'exigence de capacité de chauffage de l'au moins une unité intérieure de climatiseur, et les secondes informations de demande d'énergie représentant un état d'exigence de capacité de chauffage de l'au moins un module hydraulique ; et à régler une fréquence de fonctionnement d'un compresseur en fonction de paramètres cibles qui correspondent aux premières informations de demande d'énergie et aux secondes informations de demande d'énergie. Sont en outre divulgués dans la présente demande un système de pompe à chaleur à divisions multiples et un support de stockage lisible par ordinateur.
PCT/CN2022/082329 2021-09-27 2022-03-22 Système de pompe à chaleur à divisions multiples et procédé de commande associé, et support de stockage lisible par ordinateur WO2023045287A1 (fr)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117529066A (zh) * 2024-01-04 2024-02-06 浙江康盛热交换器有限公司 冷却机组控制方法、装置、电子设备及计算机可读介质

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113834150B (zh) * 2021-09-27 2022-09-27 广东美的制冷设备有限公司 多联机热泵系统及其控制方法、计算机可读存储介质
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CN115077118B (zh) * 2022-06-10 2023-08-08 广东开利暖通空调股份有限公司 热回收多联机空调系统及控制方法
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CN115682303A (zh) * 2022-11-07 2023-02-03 珠海格力电器股份有限公司 多模块空调系统及其控制方法、存储介质
CN115930390A (zh) * 2022-12-19 2023-04-07 珠海格力电器股份有限公司 控制方法、装置、多联式空调热水器及存储介质

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012082987A (ja) * 2010-10-07 2012-04-26 Sharp Corp ヒートポンプ給湯装置、およびヒートポンプ給湯装置の制御方法
CN103370584A (zh) * 2011-02-14 2013-10-23 三菱电机株式会社 制冷循环装置及制冷循环控制方法
CN103486692A (zh) * 2013-09-17 2014-01-01 青岛海信日立空调系统有限公司 负荷自适应变频多联式热泵系统及控制压缩机频率的方法
JP2014037911A (ja) * 2012-08-14 2014-02-27 Samsung R&D Institute Japan Co Ltd カスケードヒートポンプサイクル
EP2873932A1 (fr) * 2013-11-19 2015-05-20 Mitsubishi Electric Corporation Eau chaude et froide dans un système de conditionnement d'air
JP2015121336A (ja) * 2013-12-20 2015-07-02 三菱電機株式会社 ヒートポンプ式給湯暖房システム
WO2016187939A1 (fr) * 2015-05-22 2016-12-01 广东美的暖通设备有限公司 Procédé et système de commande de fréquence pour compresseur à fréquence variable de machine à eau chaude à pompe à chaleur
CN107747827A (zh) * 2017-11-14 2018-03-02 科林贝思（深圳）科技有限公司 一种风系统和水系统共存的空气源热泵
CN107883487A (zh) * 2017-10-17 2018-04-06 芜湖美智空调设备有限公司 热泵空调系统、热泵空调器及其控制方法以及存储介质
CN109579299A (zh) * 2018-12-21 2019-04-05 广东志高暖通设备股份有限公司 一种热水多联系统及其控制方法
CN110131916A (zh) * 2019-04-12 2019-08-16 宁波工程学院 热量逐级互补的空调、热水两联供的热泵系统及控制方法
CN111288691A (zh) * 2020-02-24 2020-06-16 广东美的暖通设备有限公司 热泵系统、热泵系统的控制方法和可读存储介质
CN112393320A (zh) * 2019-08-16 2021-02-23 广东Tcl智能暖通设备有限公司 基于热泵采暖机的压缩机转速控制方法和热泵采暖机
CN112555977A (zh) * 2020-12-10 2021-03-26 广东芬尼克兹节能设备有限公司 变频热泵的调频方法、装置、计算机设备及存储介质
CN113834150A (zh) * 2021-09-27 2021-12-24 广东美的制冷设备有限公司 多联机热泵系统及其控制方法、计算机可读存储介质

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108759007A (zh) * 2018-06-12 2018-11-06 广东美的暖通设备有限公司 空调系统的控制方法、系统及空调
CN109114758B (zh) * 2018-10-08 2021-11-02 广东美的暖通设备有限公司 空调系统控制方法及空调器
CN110030677B (zh) * 2019-04-28 2021-01-05 广东美的暖通设备有限公司 空调控制方法、装置及计算机可读存储介质
CN110030676B (zh) * 2019-04-28 2021-01-26 广东美的暖通设备有限公司 空调控制方法、装置及计算机可读存储介质
CN110145906B (zh) * 2019-05-16 2021-10-26 广东美的暖通设备有限公司 冷媒循环系统及其控制方法和计算机可读存储介质
CN111473496B (zh) * 2020-04-29 2021-08-13 广东美的暖通设备有限公司 空调系统及其控制方法和装置、存储介质

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012082987A (ja) * 2010-10-07 2012-04-26 Sharp Corp ヒートポンプ給湯装置、およびヒートポンプ給湯装置の制御方法
CN103370584A (zh) * 2011-02-14 2013-10-23 三菱电机株式会社 制冷循环装置及制冷循环控制方法
JP2014037911A (ja) * 2012-08-14 2014-02-27 Samsung R&D Institute Japan Co Ltd カスケードヒートポンプサイクル
CN103486692A (zh) * 2013-09-17 2014-01-01 青岛海信日立空调系统有限公司 负荷自适应变频多联式热泵系统及控制压缩机频率的方法
EP2873932A1 (fr) * 2013-11-19 2015-05-20 Mitsubishi Electric Corporation Eau chaude et froide dans un système de conditionnement d'air
JP2015121336A (ja) * 2013-12-20 2015-07-02 三菱電機株式会社 ヒートポンプ式給湯暖房システム
WO2016187939A1 (fr) * 2015-05-22 2016-12-01 广东美的暖通设备有限公司 Procédé et système de commande de fréquence pour compresseur à fréquence variable de machine à eau chaude à pompe à chaleur
CN107883487A (zh) * 2017-10-17 2018-04-06 芜湖美智空调设备有限公司 热泵空调系统、热泵空调器及其控制方法以及存储介质
CN107747827A (zh) * 2017-11-14 2018-03-02 科林贝思（深圳）科技有限公司 一种风系统和水系统共存的空气源热泵
CN109579299A (zh) * 2018-12-21 2019-04-05 广东志高暖通设备股份有限公司 一种热水多联系统及其控制方法
CN110131916A (zh) * 2019-04-12 2019-08-16 宁波工程学院 热量逐级互补的空调、热水两联供的热泵系统及控制方法
CN112393320A (zh) * 2019-08-16 2021-02-23 广东Tcl智能暖通设备有限公司 基于热泵采暖机的压缩机转速控制方法和热泵采暖机
CN111288691A (zh) * 2020-02-24 2020-06-16 广东美的暖通设备有限公司 热泵系统、热泵系统的控制方法和可读存储介质
CN112555977A (zh) * 2020-12-10 2021-03-26 广东芬尼克兹节能设备有限公司 变频热泵的调频方法、装置、计算机设备及存储介质
CN113834150A (zh) * 2021-09-27 2021-12-24 广东美的制冷设备有限公司 多联机热泵系统及其控制方法、计算机可读存储介质

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117529066A (zh) * 2024-01-04 2024-02-06 浙江康盛热交换器有限公司 冷却机组控制方法、装置、电子设备及计算机可读介质
CN117529066B (zh) * 2024-01-04 2024-04-09 浙江康盛热交换器有限公司 冷却机组控制方法、装置、电子设备及计算机可读介质

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