WO2021042437A1 - Air-conditioning system and control method therefor - Google Patents

Air-conditioning system and control method therefor Download PDF

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Publication number
WO2021042437A1
WO2021042437A1 PCT/CN2019/109055 CN2019109055W WO2021042437A1 WO 2021042437 A1 WO2021042437 A1 WO 2021042437A1 CN 2019109055 W CN2019109055 W CN 2019109055W WO 2021042437 A1 WO2021042437 A1 WO 2021042437A1
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WO
WIPO (PCT)
Prior art keywords
heat exchanger
dehumidification
conditioning system
circuit
outlet
Prior art date
Application number
PCT/CN2019/109055
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French (fr)
Chinese (zh)
Inventor
李锶
Original Assignee
广东美的制冷设备有限公司
美的集团股份有限公司
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Publication of WO2021042437A1 publication Critical patent/WO2021042437A1/en

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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
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/02—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing
    • F24F1/022—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing comprising a compressor cycle
    • F24F1/027—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing comprising a compressor cycle mounted in wall openings, e.g. in windows
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/02—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing
    • F24F1/032—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing characterised by heat exchangers
    • F24F1/0323—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing characterised by heat exchangers by the mounting or arrangement of the heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/02—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing
    • F24F1/0358—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing with dehumidification means
    • 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
    • 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
    • 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
    • F25B40/00—Subcoolers, desuperheaters or superheaters
    • F25B40/02—Subcoolers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/20—Humidity

Definitions

  • This application relates to the technical field of air conditioners, and in particular to an air conditioning system and a control method thereof.
  • the traditional window machine fresh air system only has the function of opening and closing. When fresh air is needed, the fresh air door is manually opened, and the fresh air directly enters the internal air duct and mixes with the indoor return air.
  • Part of the PTAC (Packaged Termianl Air Conditioner) window air conditioner fresh air device includes an independent dehumidification system, and its dehumidification system mainly includes a compressor, a condenser, an evaporator, a motor, a fan, and a fresh air duct structure.
  • the fresh air system When the fresh air system is running, after the fresh air passes through the condenser and evaporator of the fresh air device to dehumidify, it enters the air supply duct of the front section and mixes with the air entering the air duct through the evaporator in the room. The mixed gas flows through the indoor wind wheel. Blow out under the action of.
  • the related technology has the problem that the fresh air is mixed with indoor air directly without cooling, which increases the temperature of the indoor air, which is unfavorable to the cooling of the air conditioner. At the same time, when the humidity of the outside air is high, condensation is prone to occur. Comfort.
  • This application aims to solve one of the technical problems in the related technology at least to a certain extent.
  • the first purpose of this application is to propose an air conditioning system to achieve a better fresh air dehumidification effect and improve the cooling energy efficiency of the air conditioner when the fresh air is turned on.
  • the second purpose of this application is to provide a control method for an air conditioning system.
  • the third purpose of this application is to provide a control device for an air conditioning system.
  • the fourth purpose of this application is to provide a computer-readable storage medium.
  • the first aspect of the present application proposes an air conditioning system
  • the air conditioning system includes a compressor, an indoor heat exchanger and an outdoor heat exchanger, the compressor, the outdoor heat exchanger and the indoor The heat exchangers are sequentially connected to form a first indoor heat exchange loop.
  • the air conditioning system further includes a dehumidification heat exchanger, the outlet of the dehumidification heat exchanger is connected to the compressor, and the inlet of the dehumidification heat exchanger is connected to the compressor.
  • the outdoor heat exchanger is connected so that the dehumidification heat exchanger, the compressor and the outdoor heat exchanger form a first dehumidification circuit.
  • the air conditioning system further includes: a subcooler, the subcooler includes a first subcooling pipeline and a second subcooling pipeline; wherein the inlet of the first supercooling pipeline is exchanged with the outdoor Heat exchanger, the outlet of the first subcooling pipeline is connected with the indoor heat exchanger, so that the first supercooling pipeline is connected in series to the first indoor heat exchange circuit;
  • the inlet of the cold pipeline is connected with the outlet of the dehumidification heat exchanger, the outlet of the second supercooling pipeline is connected with the compressor, and the outlet of the first supercooling pipeline is connected with the dehumidification heat exchanger Connected; wherein, the dehumidification heat exchanger, the second supercooling pipeline, the compressor, the outdoor heat exchanger and the first supercooling circuit form a second dehumidification circuit, and the first pass Heat exchange is performed between the cold pipeline and the second supercooling pipeline.
  • the inlet of the dehumidification heat exchanger is also provided with a first electronic expansion valve and a first solenoid valve.
  • a high-pressure liquid storage tank and a second solenoid valve are arranged between the supercooler and the dehumidification evaporator, the outlet of the first supercooling pipeline is connected to the high-pressure liquid storage tank, and the high-pressure liquid storage tank Connected with the second solenoid valve.
  • the third solenoid valve is arranged between the outlet of the dehumidification heat exchanger and the inlet of the second supercooling pipeline;
  • the first check valve It is arranged between the outlet of the second supercooling pipeline and the compressor to control the opening of the second dehumidification circuit through the third solenoid valve and the first one-way valve.
  • the fourth solenoid valve is arranged at the entrance of the indoor heat exchanger to control the opening and closing of the first indoor heat exchange circuit.
  • a supercooling circuit is provided in the system to exchange heat between the refrigerant in the dehumidification circuit and the refrigerant at the outlet of the outdoor heat exchanger to reduce the temperature of the outdoor heat exchanger outlet and increase the degree of supercooling. Improve the energy efficiency of air conditioners.
  • the second aspect of the present application proposes a control method of an air conditioning system
  • the air conditioning system includes a compressor, an indoor heat exchanger and an outdoor heat exchanger, the compressor, the outdoor heat exchanger and The indoor heat exchangers are sequentially connected to form a first indoor heat exchange circuit
  • the air conditioning system further includes: a dehumidification heat exchanger, the dehumidification heat exchanger, the compressor, and the outdoor heat exchanger Forming a first dehumidification circuit
  • the control method includes: detecting and identifying that the humidity at the air outlet of the dehumidification evaporator is less than a preset humidity, controlling the flow of refrigerant in the first dehumidifying circuit to decrease; detecting and identifying the dehumidification The humidity at the air outlet of the evaporator is greater than the preset humidity, and the flow rate of the refrigerant in the first dehumidification circuit is controlled to increase.
  • the control method further includes: detecting and identifying that the humidity at the air outlet of the dehumidification evaporator is less than a preset humidity, controlling the rotation speed of the dehumidification heat exchanger to decrease; detecting and identifying the humidity at the air outlet of the dehumidification evaporator If the humidity is greater than the preset humidity, the rotation speed of the dehumidification heat exchanger is controlled to increase.
  • the air conditioning system further includes a subcooler, and the outlet of the first subcooling pipeline of the subcooler is connected to the indoor heat exchanger, so that the first supercooling pipeline is connected in series to the first indoor In the heat exchange circuit, the first subcooling circuit of the dehumidification heat exchanger, the second supercooling pipeline, the compressor, the outdoor heat exchanger, and the supercooler forms a second dehumidification circuit;
  • the control method further includes: obtaining a first temperature at the air outlet of the indoor heat exchanger and a second temperature at the air outlet of the dehumidifying heat exchanger; according to the first temperature and the second temperature The difference and size relationship of, control the refrigerant flow in the second dehumidification circuit.
  • the controlling the flow rate of the refrigerant in the second dehumidification circuit according to the difference between the first temperature and the second temperature and the magnitude relationship includes: detecting and identifying that the first temperature is greater than the second temperature and the If the difference is greater than the preset difference, control the refrigerant flow in the second dehumidification circuit to increase; detect and identify that the first temperature is less than the second temperature and the difference is greater than the preset difference, Then the flow rate of the refrigerant in the second dehumidification circuit is controlled to decrease.
  • the temperature of the fresh air entering the indoor air duct (the first temperature T at the air outlet of the dehumidification evaporator) and the return air temperature of the indoor air duct passing through the indoor heat exchanger (the outlet of the indoor heat exchanger) can be controlled by controlling the temperature of the fresh air entering the indoor air duct (the first temperature T at the air outlet of the dehumidification evaporator).
  • the temperature difference of the first temperature T1) at the tuyere is within a certain range, which reduces the temperature difference between the two strands of air, thereby reducing the energy efficiency consumption of the two strands of air, thereby achieving the effect of energy saving.
  • the third aspect of the present application proposes a control device for an air conditioning system, which includes a control module for implementing the control method.
  • the fourth aspect of the present application proposes a computer-readable storage medium on which a computer program is stored, and when the program is executed by a processor, the control method of the air-conditioning system is realized.
  • Figure 1 is a schematic structural diagram of an air conditioning system according to an embodiment of the application.
  • FIG. 2 is a flowchart of a control method of an air conditioning system according to an embodiment of the application
  • FIG. 3 is a flowchart of a control method of an air conditioning system according to an embodiment of the application
  • FIG. 4 is a flowchart of a control method of an air conditioning system according to another embodiment of the application.
  • Fig. 5 is a flowchart of a control method of an air conditioning system according to another embodiment of the application.
  • Fig. 1 is a schematic structural diagram of an air conditioning system according to an embodiment of the application.
  • the air conditioning system 100 of the present application includes: a compressor 1, an indoor heat exchanger 2, an outdoor heat exchanger 3, and a dehumidification heat exchanger 4.
  • the compressor 1, the outdoor heat exchanger 3 and the indoor heat exchanger 2 are sequentially connected to form a first indoor heat exchange circuit.
  • the outlet of the dehumidification heat exchanger 4 is connected to the compressor 1, and the inlet of the dehumidification heat exchanger 4 is connected to the outdoor heat exchanger 3, so that the dehumidification heat exchanger 4, the compressor 1 and the outdoor heat exchanger 3 form the first dehumidification circuit .
  • the inlet of the dehumidification heat exchanger 4 is also provided with a first electronic expansion valve 5 and a first solenoid valve 6.
  • the opening of the first electronic expansion valve 5 and the first solenoid valve 6 controls the opening of the first dehumidification circuit to exchange heat for dehumidification.
  • the air from the device 4 is dehumidified.
  • the fourth solenoid valve 7 is arranged at the entrance of the indoor heat exchanger 2 to control the opening and closing of the first indoor heat exchange circuit.
  • the air conditioning system of the present application has at least an independent refrigeration circuit (the first indoor heat exchange circuit) and a dehumidification circuit, and can control the opening and closing of the refrigeration circuit and the dehumidification circuit through the first solenoid valve and the fourth solenoid valve to achieve Independent refrigeration and fresh air dehumidification functions.
  • the air conditioning system 100 further includes a subcooler 8, and the subcooler 8 includes a first supercooling pipeline and a second supercooling pipeline.
  • the inlet of the first supercooling pipeline is connected to the outdoor heat exchanger 3, and the outlet of the first supercooling pipeline is connected to the indoor heat exchanger 2, so that the first supercooling pipeline is connected in series with the first indoor heat exchange circuit.
  • the inlet of the second subcooling pipeline is connected with the outlet of the dehumidifying heat exchanger 4
  • the outlet of the second supercooling pipeline is connected with the compressor
  • the outlet of the first supercooling pipeline is connected with the dehumidifying heat exchanger 4.
  • the dehumidification heat exchanger 4, the second subcooling pipeline, the compressor 1, the outdoor heat exchanger 3, and the first supercooling pipeline form a second dehumidification circuit, and pass through the first supercooling pipeline and the second supercooling pipeline Perform heat exchange.
  • the present application also sets up a subcooler so that the air conditioner can exchange heat in the subcooler through the first indoor heat exchange circuit and the second dehumidification circuit, thereby reducing the temperature of the condenser outlet and increasing the degree of subcooling. , Improve the effect of turning off the air-conditioning system.
  • a high-pressure liquid storage tank 9 and a second solenoid valve 10 are arranged between the supercooler 8 and the dehumidification evaporator 4.
  • the outlet of the first supercooling pipeline is connected to the high-pressure liquid storage tank 9, and the high-pressure liquid storage tank 9 is connected to the first
  • the two solenoid valves 10 are connected.
  • the high-pressure liquid storage tank and the solenoid valve are connected in parallel in the flow path, and the solenoid valve is controlled to supplement the system refrigerant.
  • the air-conditioning system 100 further includes a third solenoid valve 11 and a first check valve 12, wherein the third solenoid valve 11 is arranged between the outlet of the dehumidification heat exchanger and the inlet of the second subcooling pipeline, and the first check valve 12 is arranged between the outlet of the second supercooling pipeline and the compressor 1 to control the opening of the second dehumidification circuit through the third solenoid valve 11 and the first one-way valve 12.
  • a second electronic expansion valve 13 is also provided between the fourth solenoid valve 7 and the indoor heat exchanger 2, and a second check valve 15 and a gas-liquid separator 16 are also provided between the dehumidification evaporator 4 and the compressor 1.
  • a fifth solenoid valve 14 is also provided between the first subcooling pipeline of the device 8 and the high-pressure liquid storage tank 9.
  • the fifth solenoid valve 14 the first solenoid valve 6, the fourth solenoid valve 7, and the third solenoid valve 11 are opened, and the first one-way valve 12 and the second one-way valve are opened.
  • the valve 15 is in circulation and the compressor is running.
  • the refrigerant flows out of the compressor 1 and passes through the outdoor heat exchanger 3.
  • the first part passes through the fifth solenoid valve 14 and enters the high-pressure liquid storage tank 9, and the second part passes through the fourth solenoid valve 7 and
  • the second electronic expansion valve 13 enters the indoor heat exchanger 2, and finally returns to the compressor 1 through the enterprise separator 16 to provide cooling capacity for the room.
  • the third part enters through the first solenoid valve 6 and the first electronic expansion valve 7 Go to the dehumidification heat exchanger 4 to dehumidify the fresh air.
  • the refrigerant at the outlet of the dehumidifier evaporator 4 flows through the second supercooling pipeline of the cooler 8 through the third solenoid valve 11, in the supercooler 8 and the first supercooling pipeline (outdoor heat exchanger 3 outlet)
  • the refrigerant exchanges heat to increase the degree of subcooling at the outlet of the outdoor heat exchanger 3, and finally returns to the compressor 1 through the first check valve 12, the second check valve 15 and the gas-liquid separator 16.
  • a supercooling circuit is provided in the system to exchange heat between the refrigerant in the dehumidification circuit and the refrigerant at the outlet of the outdoor heat exchanger, so as to reduce the temperature at the outlet of the outdoor heat exchanger and increase The degree of supercooling improves the energy efficiency of the air conditioner.
  • This application also proposes a control method of the air conditioning system.
  • the air-conditioning system includes a compressor, an indoor heat exchanger, and an outdoor heat exchanger.
  • the compressor, the outdoor heat exchanger and the indoor heat exchanger are connected in sequence to form a first indoor heat exchange circuit, characterized in that the air-conditioning system also includes: dehumidification and heat exchange The dehumidification heat exchanger, the compressor and the outdoor heat exchanger form the first dehumidification circuit.
  • Fig. 2 is a flowchart of a control method of an air conditioning system according to an embodiment of the application. As shown in Figure 2, the control method of the air conditioning system includes the following steps:
  • S201 Detect and identify that the humidity at the air outlet of the dehumidification evaporator is less than a preset humidity, and control the flow of refrigerant in the first dehumidification circuit to decrease.
  • S202 Detect and identify that the humidity at the air outlet of the dehumidification evaporator is greater than a preset humidity, and control the flow of refrigerant in the first dehumidification circuit to increase.
  • S301 Detect and identify that the humidity at the air outlet of the dehumidification evaporator is less than the preset humidity, and control the rotation speed of the dehumidification heat exchanger to decrease.
  • S302 Detect and identify that the humidity at the air outlet of the dehumidification evaporator is greater than the preset humidity, and control the rotation speed of the dehumidification heat exchanger to increase.
  • a humidity detection device can be set at the air outlet of the dehumidification evaporator to detect the humidity at the air outlet of the dehumidification evaporator and compare it with the preset humidity set by the user.
  • the opening degree of the first electronic expansion valve is controlled to decrease to reduce the refrigerant flow in the first dehumidification circuit, and the rotation speed of the dehumidification evaporator is controlled to decrease to increase the dehumidification capacity;
  • the opening degree of the first electronic expansion valve is controlled to increase to increase the refrigerant flow in the first dehumidification circuit, and the rotation speed of the dehumidification evaporator is controlled to increase to reduce the humidity.
  • the air conditioning system further includes a subcooler, and the outlet of the first subcooling pipeline of the subcooler is connected to the indoor heat exchanger, so that the first subcooling pipeline is connected in series to the first indoor heat exchange circuit, and the dehumidification exchange
  • the first subcooling circuit of the heat exchanger, the second subcooling pipeline, the compressor, the outdoor heat exchanger, and the subcooler forms a second dehumidification circuit.
  • the control method of the air conditioning system also includes:
  • S402 Control the refrigerant flow rate in the second dehumidification circuit according to the difference between the first temperature and the second temperature and the magnitude relationship.
  • step S402 further includes:
  • S501 Detect and identify that the first temperature is greater than the second temperature and the difference is greater than the preset difference, then control the refrigerant flow in the second dehumidification circuit to increase.
  • a temperature detection unit can be provided at the air outlet of the indoor heat exchanger to detect the first temperature T1 at the air outlet of the indoor heat exchanger
  • a temperature detection device can be provided at the air outlet of the dehumidification evaporator, It is used to detect the first temperature T at the air outlet of the dehumidification evaporator, and calculate the magnitude relationship between the difference T1-T between the first temperature T1 and the second temperature T and the preset difference M.
  • the difference value M is set, it means that the temperature difference between the two places is large at this time, and the heat exchange of the two air streams consumes a large amount of energy, which is not good for energy saving. Therefore, the opening degree of the first electronic expansion valve is controlled to decrease to reduce The refrigerant flow rate in the second dehumidification circuit.
  • the difference T1-T between the first temperature T1 and the second temperature T is less than or equal to the preset difference M, no matter whether the first temperature T1 is greater than the second temperature T or the first temperature T1 is less than the second temperature T1.
  • the temperature T indicates that the temperature difference between the two places is within a certain range at this time. By default, the heat exchange of the two air streams consumes less energy. At this time, the fresh air function and the dehumidification function reach a relatively energy-saving degree.
  • the temperature of the fresh air entering the indoor air duct (the first temperature T at the air outlet of the dehumidification evaporator) and the return air temperature of the indoor air duct passing through the indoor heat exchanger (indoor
  • the temperature difference of the first temperature T1) at the air outlet of the heat exchanger is within a certain range, which reduces the temperature difference between the two air streams, thereby reducing the energy efficiency consumption of the two air streams, thereby achieving the effect of energy saving.
  • the present application also proposes a control device of an air-conditioning system, including a control module, which is used in the aforementioned control method.
  • the present application also proposes a computer-readable storage medium on which a computer program is stored, and when the program is executed by a processor, the aforementioned air conditioning system control method is realized.
  • first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with “first” and “second” may explicitly or implicitly include at least one of the features. In the description of the present application, "a plurality of” means at least two, such as two, three, etc., unless specifically defined otherwise.
  • a "computer-readable medium” can be any device that can contain, store, communicate, propagate, or transmit a program for use by an instruction execution system, device, or device or in combination with these instruction execution systems, devices, or devices.
  • computer readable media include the following: electrical connections (electronic devices) with one or more wiring, portable computer disk cases (magnetic devices), random access memory (RAM), Read only memory (ROM), erasable and editable read only memory (EPROM or flash memory), fiber optic devices, and portable compact disk read only memory (CDROM).
  • the computer-readable medium may even be paper or other suitable medium on which the program can be printed, because it can be used, for example, by optically scanning the paper or other medium, followed by editing, interpretation, or other suitable media if necessary. The program is processed in a way to obtain the program electronically and then stored in the computer memory.
  • each part of this application can be implemented by hardware, software, firmware, or a combination thereof.
  • multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system.
  • Discrete logic gate circuits with logic functions for data signals Logic circuit, application specific integrated circuit with suitable combinational logic gate circuit, programmable gate array (PGA), field programmable gate array (FPGA), etc.
  • a person of ordinary skill in the art can understand that all or part of the steps carried in the method of the foregoing embodiments can be implemented by a program instructing relevant hardware to complete.
  • the program can be stored in a computer-readable storage medium, and the program can be stored in a computer-readable storage medium. When executed, it includes one of the steps of the method embodiment or a combination thereof.
  • each functional unit in each embodiment of the present application may be integrated into one processing module, or each unit may exist alone physically, or two or more units may be integrated into one module.
  • the above-mentioned integrated modules can be implemented in the form of hardware or software function modules. If the integrated module is implemented in the form of a software function module and sold or used as an independent product, it can also be stored in a computer readable storage medium.
  • the aforementioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.

Abstract

An air-conditioning system (100) and a control method therefor. The air-conditioning system (100) comprises a compressor (1), an indoor heat exchanger (2), and an outdoor heat exchanger (3), the compressor (1), the outdoor heat exchanger (3), and the indoor heat exchanger (2) being connected in sequence to form a first indoor heat exchange loop, and also comprises: a dehumidification heat exchanger (4), the outlet of the dehumidification heat exchanger (4) being connected to the compressor (1), and the inlet of the dehumidification heat exchanger (4) being connected to the outdoor heat exchanger (3), so that the dehumidification heat exchanger (4), the compressor (1), and the outdoor heat exchanger (3) form a first dehumidification loop.

Description

空调系统及其控制方法Air conditioning system and its control method
相关申请的交叉引用Cross-references to related applications
本申请要求广东美的制冷设备有限公司和美的集团股份有限公司于2019年9月4日提交的、申请名称为“空调系统及其控制方法”的、中国专利申请号“201910831078.0”的优先权。This application claims the priority of the Chinese patent application number "201910831078.0" filed by Guangdong Midea Refrigeration Equipment Co., Ltd. and Midea Group Co., Ltd. on September 4, 2019, with the application titled "Air Conditioning System and Its Control Method".
技术领域Technical field
本申请涉及空调器技术领域，尤其涉及一种空调系统及其控制方法。This application relates to the technical field of air conditioners, and in particular to an air conditioning system and a control method thereof.
背景技术Background technique
传统的窗机新风系统只有打开和关闭的功能，当需要新风时，手动打开新风门，新风直接进入到内部风道内与室内回风空气混合吹出。部分PTAC(Packaged Termianl Air Conditioner，整体式终端空调设备)窗机空调新风装置包括独立的除湿系统，其除湿系统主要包括压缩机、冷凝器、蒸发器、电机、风扇和新风风道结构。当新风系统运行时，新风通过新风装置的冷凝器和蒸发器除湿之后，进入到前段的送风风道中与室内通过蒸发器进入送风通道内的空气混合，混合后的气体在室内贯流风轮的作用下吹出。The traditional window machine fresh air system only has the function of opening and closing. When fresh air is needed, the fresh air door is manually opened, and the fresh air directly enters the internal air duct and mixes with the indoor return air. Part of the PTAC (Packaged Termianl Air Conditioner) window air conditioner fresh air device includes an independent dehumidification system, and its dehumidification system mainly includes a compressor, a condenser, an evaporator, a motor, a fan, and a fresh air duct structure. When the fresh air system is running, after the fresh air passes through the condenser and evaporator of the fresh air device to dehumidify, it enters the air supply duct of the front section and mixes with the air entering the air duct through the evaporator in the room. The mixed gas flows through the indoor wind wheel. Blow out under the action of.
但是，相关技术存在的问题是，新风不通过降温直接与室内空气混合吹出，提高了室内出风的温度，对空调的制冷不利，同时当外部空气湿度较高时，容易出现凝露情况，影响舒适度。However, the related technology has the problem that the fresh air is mixed with indoor air directly without cooling, which increases the temperature of the indoor air, which is unfavorable to the cooling of the air conditioner. At the same time, when the humidity of the outside air is high, condensation is prone to occur. Comfort.
发明内容Summary of the invention
本申请旨在至少在一定程度上解决相关技术中的技术问题之一。This application aims to solve one of the technical problems in the related technology at least to a certain extent.
为此，本申请的第一个目的在于提出一种空调系统，以实现较好的新风除湿效果并提高空调在新风开启时的制冷能效。For this reason, the first purpose of this application is to propose an air conditioning system to achieve a better fresh air dehumidification effect and improve the cooling energy efficiency of the air conditioner when the fresh air is turned on.
本申请的第二个目的在于提出一种空调系统的控制方法。The second purpose of this application is to provide a control method for an air conditioning system.
本申请的第三个目的在于提出一种空调系统的控制装置。The third purpose of this application is to provide a control device for an air conditioning system.
本申请的第四个目的在于提出一种计算机可读存储介质。The fourth purpose of this application is to provide a computer-readable storage medium.
为达上述目的，本申请第一方面提出了一种空调系统，所述空调系统包括压缩机、室内换热器和室外换热器，所述压缩机、所述室外换热器和所述室内换热器依次连接组成第一室内换热回路，所述空调系统还包括：除湿换热器，所述除湿换热器的出口与所述压缩 机相连，所述除湿换热器的入口与所述室外换热器相连，以使所述除湿换热器、所述压缩机和所述室外换热器形成第一除湿回路。To achieve the above objective, the first aspect of the present application proposes an air conditioning system, the air conditioning system includes a compressor, an indoor heat exchanger and an outdoor heat exchanger, the compressor, the outdoor heat exchanger and the indoor The heat exchangers are sequentially connected to form a first indoor heat exchange loop. The air conditioning system further includes a dehumidification heat exchanger, the outlet of the dehumidification heat exchanger is connected to the compressor, and the inlet of the dehumidification heat exchanger is connected to the compressor. The outdoor heat exchanger is connected so that the dehumidification heat exchanger, the compressor and the outdoor heat exchanger form a first dehumidification circuit.
所述的空调系统，还包括：过冷器，所述过冷器包括第一过冷管路和第二过冷管路；其中，所述第一过冷管路的入口与所述室外换热器相连，所述第一过冷管路的出口与所述室内换热器相连，以使所述第一过冷管路串联至所述第一室内换热回路中；所述第二过冷管路的入口与所述除湿换热器的出口相连，所述第二过冷管路的出口与所述压缩机相连，所述第一过冷管路的出口与所述除湿换热器相连；其中，所述除湿换热器、所述第二过冷管路、所述压缩机、所述室外换热器和所述第一过冷回路形成第二除湿回路，所述第一过冷管路和所述第二过冷管路之间进行热交换。The air conditioning system further includes: a subcooler, the subcooler includes a first subcooling pipeline and a second subcooling pipeline; wherein the inlet of the first supercooling pipeline is exchanged with the outdoor Heat exchanger, the outlet of the first subcooling pipeline is connected with the indoor heat exchanger, so that the first supercooling pipeline is connected in series to the first indoor heat exchange circuit; The inlet of the cold pipeline is connected with the outlet of the dehumidification heat exchanger, the outlet of the second supercooling pipeline is connected with the compressor, and the outlet of the first supercooling pipeline is connected with the dehumidification heat exchanger Connected; wherein, the dehumidification heat exchanger, the second supercooling pipeline, the compressor, the outdoor heat exchanger and the first supercooling circuit form a second dehumidification circuit, and the first pass Heat exchange is performed between the cold pipeline and the second supercooling pipeline.
所述除湿换热器的入口还设置有第一电子膨胀阀和第一电磁阀。The inlet of the dehumidification heat exchanger is also provided with a first electronic expansion valve and a first solenoid valve.
所述过冷器与所述除湿蒸发器之间设置有高压储液罐和第二电磁阀，所述第一过冷管路的出口与所述高压储液罐相连，所述高压储液罐与所述第二电磁阀相连。A high-pressure liquid storage tank and a second solenoid valve are arranged between the supercooler and the dehumidification evaporator, the outlet of the first supercooling pipeline is connected to the high-pressure liquid storage tank, and the high-pressure liquid storage tank Connected with the second solenoid valve.
还包括第三电磁阀和第一单向阀；所述第三电磁阀设置在所述除湿换热器的出口和所述第二过冷管路的入口之间；所述第一单向阀设置在所述第二过冷管路的出口和所述压缩机之间，以通过所述第三电磁阀和所述第一单向阀控制所述第二除湿回路开启。It also includes a third solenoid valve and a first check valve; the third solenoid valve is arranged between the outlet of the dehumidification heat exchanger and the inlet of the second supercooling pipeline; the first check valve It is arranged between the outlet of the second supercooling pipeline and the compressor to control the opening of the second dehumidification circuit through the third solenoid valve and the first one-way valve.
还包括第四电磁阀；所述第四电磁阀设置于所述室内换热器的入口，以控制所述第一室内换热回路的开启和关闭。It also includes a fourth solenoid valve; the fourth solenoid valve is arranged at the entrance of the indoor heat exchanger to control the opening and closing of the first indoor heat exchange circuit.
根据本申请的空调系统，在系统内设置有过冷回路，以通过除湿回路的冷媒与室外换热器出口处的冷媒进行热交换，降低室外换热器出口的温度，提高过冷度，从而提升空调的能效。According to the air conditioning system of the present application, a supercooling circuit is provided in the system to exchange heat between the refrigerant in the dehumidification circuit and the refrigerant at the outlet of the outdoor heat exchanger to reduce the temperature of the outdoor heat exchanger outlet and increase the degree of supercooling. Improve the energy efficiency of air conditioners.
为达上述目的，本申请第二方面提出了一种空调系统的控制方法，所述空调系统包括压缩机、室内换热器和室外换热器，所述压缩机、所述室外换热器和所述室内换热器依次连接组成第一室内换热回路，其特征在于，所述空调系统还包括：除湿换热器，所述除湿换热器、所述压缩机和所述室外换热器形成第一除湿回路；所述控制方法包括：检测并识别所述除湿蒸发器出风口处的湿度小于预设湿度，控制所述第一除湿回路中的冷媒流量减小；检测并识别所述除湿蒸发器出风口处的湿度大于预设湿度，控制所述第一除湿回路中的冷媒流量增大。To achieve the above objective, the second aspect of the present application proposes a control method of an air conditioning system, the air conditioning system includes a compressor, an indoor heat exchanger and an outdoor heat exchanger, the compressor, the outdoor heat exchanger and The indoor heat exchangers are sequentially connected to form a first indoor heat exchange circuit, wherein the air conditioning system further includes: a dehumidification heat exchanger, the dehumidification heat exchanger, the compressor, and the outdoor heat exchanger Forming a first dehumidification circuit; the control method includes: detecting and identifying that the humidity at the air outlet of the dehumidification evaporator is less than a preset humidity, controlling the flow of refrigerant in the first dehumidifying circuit to decrease; detecting and identifying the dehumidification The humidity at the air outlet of the evaporator is greater than the preset humidity, and the flow rate of the refrigerant in the first dehumidification circuit is controlled to increase.
所述的控制方法，还包括：检测并识别所述除湿蒸发器出风口处的湿度小于预设湿度，控制所述除湿换热器的转速降低；检测并识别所述除湿蒸发器出风口处的湿度大于预设湿度，控制所述除湿换热器的转速增大。The control method further includes: detecting and identifying that the humidity at the air outlet of the dehumidification evaporator is less than a preset humidity, controlling the rotation speed of the dehumidification heat exchanger to decrease; detecting and identifying the humidity at the air outlet of the dehumidification evaporator If the humidity is greater than the preset humidity, the rotation speed of the dehumidification heat exchanger is controlled to increase.
所述空调系统还包括过冷器，所述过冷器的第一过冷管路的出口与所述室内换热器相连，以使所述第一过冷管路串联至所述第一室内换热回路中，所述除湿换热器、所述第二 过冷管路、所述压缩机、所述室外换热器和所述过冷器的第一过冷回路形成第二除湿回路；所述控制方法还包括：获取所述室内换热器的出风口处的第一温度和所述除湿换热器的出风口处的第二温度；根据所述第一温度和所述第二温度的差值以及大小关系，控制第二除湿回路中的冷媒流量。The air conditioning system further includes a subcooler, and the outlet of the first subcooling pipeline of the subcooler is connected to the indoor heat exchanger, so that the first supercooling pipeline is connected in series to the first indoor In the heat exchange circuit, the first subcooling circuit of the dehumidification heat exchanger, the second supercooling pipeline, the compressor, the outdoor heat exchanger, and the supercooler forms a second dehumidification circuit; The control method further includes: obtaining a first temperature at the air outlet of the indoor heat exchanger and a second temperature at the air outlet of the dehumidifying heat exchanger; according to the first temperature and the second temperature The difference and size relationship of, control the refrigerant flow in the second dehumidification circuit.
所述根据所述第一温度和所述第二温度的差值以及大小关系，控制第二除湿回路中的冷媒流量，包括：检测并识别所述第一温度大于所述第二温度且所述差值大于预设差值，则控制所述第二除湿回路中的冷媒流量增大；检测并识别所述第一温度小于所述第二温度且所述差值大于所述预设差值，则控制所述第二除湿回路中的冷媒流量减小。The controlling the flow rate of the refrigerant in the second dehumidification circuit according to the difference between the first temperature and the second temperature and the magnitude relationship includes: detecting and identifying that the first temperature is greater than the second temperature and the If the difference is greater than the preset difference, control the refrigerant flow in the second dehumidification circuit to increase; detect and identify that the first temperature is less than the second temperature and the difference is greater than the preset difference, Then the flow rate of the refrigerant in the second dehumidification circuit is controlled to decrease.
根据本申请的控制方法，能够通过控制进入室内风道新风温度(除湿蒸发器的出风口处的第一温度T)与室内风道经过室内换热器的回风温度(室内换热器的出风口处的第一温度T1)的温度差在一定范围内，减少两股空气的温度差，进而减少两股空气的能效消耗，从而达到节能的效果。According to the control method of the present application, the temperature of the fresh air entering the indoor air duct (the first temperature T at the air outlet of the dehumidification evaporator) and the return air temperature of the indoor air duct passing through the indoor heat exchanger (the outlet of the indoor heat exchanger) can be controlled by controlling the temperature of the fresh air entering the indoor air duct (the first temperature T at the air outlet of the dehumidification evaporator). The temperature difference of the first temperature T1) at the tuyere is within a certain range, which reduces the temperature difference between the two strands of air, thereby reducing the energy efficiency consumption of the two strands of air, thereby achieving the effect of energy saving.
为达上述目的，本申请第三方面提出了一种空调系统的控制装置，包括控制模块，用于实现所述的控制方法。To achieve the above objective, the third aspect of the present application proposes a control device for an air conditioning system, which includes a control module for implementing the control method.
为了实现上述目的，本申请第四方面提出了一种计算机可读存储介质，其上存储有计算机程序，该程序被处理器执行时实现所述的空调系统的控制方法。In order to achieve the foregoing objective, the fourth aspect of the present application proposes a computer-readable storage medium on which a computer program is stored, and when the program is executed by a processor, the control method of the air-conditioning system is realized.
本申请附加的方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本申请的实践了解到。The additional aspects and advantages of the present application will be partly given in the following description, and some will become obvious from the following description, or be understood through the practice of the present application.
附图说明Description of the drawings
本申请上述的和/或附加的方面和优点从下面结合附图对实施例的描述中将变得明显和容易理解，其中：The above and/or additional aspects and advantages of the present application will become obvious and easy to understand from the following description of the embodiments in conjunction with the accompanying drawings, in which:
图1为本申请实施例的空调系统的结构示意图；Figure 1 is a schematic structural diagram of an air conditioning system according to an embodiment of the application;
图2为本申请实施例的空调系统的控制方法的流程图；2 is a flowchart of a control method of an air conditioning system according to an embodiment of the application;
图3为本申请一个实施例的空调系统的控制方法的流程图；FIG. 3 is a flowchart of a control method of an air conditioning system according to an embodiment of the application;
图4为本申请另一个实施例的空调系统的控制方法的流程图；4 is a flowchart of a control method of an air conditioning system according to another embodiment of the application;
图5为本申请又一个实施例的空调系统的控制方法的流程图。Fig. 5 is a flowchart of a control method of an air conditioning system according to another embodiment of the application.
具体实施方式detailed description
下面详细描述本申请的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本申请，而不能理解为对本申请的限制。The embodiments of the present application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present application, but should not be understood as a limitation to the present application.
下面参考附图描述本申请实施例的空调系统及其控制方法。The air conditioning system and its control method according to the embodiments of the present application will be described below with reference to the drawings.
图1为本申请实施例的空调系统的结构示意图。如图1所示，本申请的空调系统100，包括：压缩机1、室内换热器2、室外换热器3和除湿换热器4。Fig. 1 is a schematic structural diagram of an air conditioning system according to an embodiment of the application. As shown in FIG. 1, the air conditioning system 100 of the present application includes: a compressor 1, an indoor heat exchanger 2, an outdoor heat exchanger 3, and a dehumidification heat exchanger 4.
其中，压缩机1、室外换热器3和室内换热器2依次连接组成第一室内换热回路。Among them, the compressor 1, the outdoor heat exchanger 3 and the indoor heat exchanger 2 are sequentially connected to form a first indoor heat exchange circuit.
除湿换热器4的出口与压缩机1相连，除湿换热器4的入口与室外换热器3相连，以使除湿换热器4、压缩机1和室外换热器3形成第一除湿回路。The outlet of the dehumidification heat exchanger 4 is connected to the compressor 1, and the inlet of the dehumidification heat exchanger 4 is connected to the outdoor heat exchanger 3, so that the dehumidification heat exchanger 4, the compressor 1 and the outdoor heat exchanger 3 form the first dehumidification circuit .
除湿换热器4的入口还设置有第一电子膨胀阀5和第一电磁阀6，通过第一电子膨胀阀5和第一电磁阀6的开启控制第一除湿回路开启，以对除湿换热器4的出风进行除湿。The inlet of the dehumidification heat exchanger 4 is also provided with a first electronic expansion valve 5 and a first solenoid valve 6. The opening of the first electronic expansion valve 5 and the first solenoid valve 6 controls the opening of the first dehumidification circuit to exchange heat for dehumidification. The air from the device 4 is dehumidified.
第四电磁阀7设置于室内换热器2的入口，以控制第一室内换热回路的开启和关闭。The fourth solenoid valve 7 is arranged at the entrance of the indoor heat exchanger 2 to control the opening and closing of the first indoor heat exchange circuit.
由此，本申请的空调系统至少具有独立的制冷回路(第一室内换热回路)和除湿回路，能够通过第一电磁阀和第四电磁阀控制制冷回路和除湿回路的开启和关闭，以实现独立的制冷和新风除湿的功能。Therefore, the air conditioning system of the present application has at least an independent refrigeration circuit (the first indoor heat exchange circuit) and a dehumidification circuit, and can control the opening and closing of the refrigeration circuit and the dehumidification circuit through the first solenoid valve and the fourth solenoid valve to achieve Independent refrigeration and fresh air dehumidification functions.
如图1所示，空调系统100还包括过冷器8，过冷器8包括第一过冷管路和第二过冷管路。As shown in FIG. 1, the air conditioning system 100 further includes a subcooler 8, and the subcooler 8 includes a first supercooling pipeline and a second supercooling pipeline.
其中，第一过冷管路的入口与室外换热器3相连，第一过冷管路的出口与室内换热器2相连，以使第一过冷管路串联质第一室内换热回路中；第二过冷管路的入口与除湿换热器4的出口相连，第二过冷管路的出口与压缩机相连，第一过冷管路的出口与除湿换热器4相连。除湿换热器4、第二过冷管路、压缩机1、室外换热器3和第一过冷管路形成第二除湿回路，并通过第一过冷管路和第二过冷管路进行热交换。Wherein, the inlet of the first supercooling pipeline is connected to the outdoor heat exchanger 3, and the outlet of the first supercooling pipeline is connected to the indoor heat exchanger 2, so that the first supercooling pipeline is connected in series with the first indoor heat exchange circuit. In; the inlet of the second subcooling pipeline is connected with the outlet of the dehumidifying heat exchanger 4, the outlet of the second supercooling pipeline is connected with the compressor, and the outlet of the first supercooling pipeline is connected with the dehumidifying heat exchanger 4. The dehumidification heat exchanger 4, the second subcooling pipeline, the compressor 1, the outdoor heat exchanger 3, and the first supercooling pipeline form a second dehumidification circuit, and pass through the first supercooling pipeline and the second supercooling pipeline Perform heat exchange.
也就是说，本申请还通过设置过冷器，使得空调器能够通过第一室内换热回路和第二除湿回路在过冷器内进行换热，从而降低冷凝器出口的温度，提高过冷度，提升关空调系统的效果。That is to say, the present application also sets up a subcooler so that the air conditioner can exchange heat in the subcooler through the first indoor heat exchange circuit and the second dehumidification circuit, thereby reducing the temperature of the condenser outlet and increasing the degree of subcooling. , Improve the effect of turning off the air-conditioning system.
其中，过冷器8与除湿蒸发器4之间设置有高压储液罐9和第二电磁阀10，第一过冷管路的出口与高压储液罐9相连，高压储液罐9与第二电磁阀10相连。以通过在流路中并联高压储液罐和电磁阀，通过控制电磁阀，对实现对系统冷媒的补充。Among them, a high-pressure liquid storage tank 9 and a second solenoid valve 10 are arranged between the supercooler 8 and the dehumidification evaporator 4. The outlet of the first supercooling pipeline is connected to the high-pressure liquid storage tank 9, and the high-pressure liquid storage tank 9 is connected to the first The two solenoid valves 10 are connected. The high-pressure liquid storage tank and the solenoid valve are connected in parallel in the flow path, and the solenoid valve is controlled to supplement the system refrigerant.
空调系统100还包括第三电磁阀11和第一单向阀12，其中，第三电磁阀11设置在除湿换热器的出口和第二过冷管路的入口之间，第一单向阀12设置在第二过冷管路的出口和压缩机1之间，以通过第三电磁阀11和第一单向阀12控制第二除湿回路开启。The air-conditioning system 100 further includes a third solenoid valve 11 and a first check valve 12, wherein the third solenoid valve 11 is arranged between the outlet of the dehumidification heat exchanger and the inlet of the second subcooling pipeline, and the first check valve 12 is arranged between the outlet of the second supercooling pipeline and the compressor 1 to control the opening of the second dehumidification circuit through the third solenoid valve 11 and the first one-way valve 12.
第四电磁阀7与室内换热器2之间还设置有第二电子膨胀阀13，除湿蒸发器4与压缩机1之间还设置有第二单向阀15和气液分离器16，过冷器8的第一过冷管路与高压储液罐9之间还设置有第五电磁阀14。A second electronic expansion valve 13 is also provided between the fourth solenoid valve 7 and the indoor heat exchanger 2, and a second check valve 15 and a gas-liquid separator 16 are also provided between the dehumidification evaporator 4 and the compressor 1. A fifth solenoid valve 14 is also provided between the first subcooling pipeline of the device 8 and the high-pressure liquid storage tank 9.
具体而言，空调系统制冷与除湿系统同时运行时，第五电磁阀14、第一电磁阀6、第 四电磁阀7和第三电磁阀11打开，第一单向阀12和第二单向阀15处于流通状态，压缩机运行，冷媒从压缩机1流出后经过室外换热器3第一部分经过第五电磁阀14进入到高压储液罐9中，第二部分经过第四电磁阀7和第二电子膨胀阀13进入到室内换热器2中，最后经过企业分离器16回到压缩机1中为室内提供制冷量，第三部分通过第一电磁阀6和第一电子膨胀阀7进入到除湿换热器4中，为新风进行除湿。除湿蒸发器4出口的冷媒另一路通过第三电磁阀11流经过冷器8的第二过冷管路，在过冷器8内与第一过冷管路(室外换热器3出口处)的冷媒进行热交换，提高室外换热器3出口处的过冷度，最后经第一单向阀12和第二单向阀15和气液分离器16回到压缩机1中。Specifically, when the refrigeration and dehumidification systems of the air conditioning system are running at the same time, the fifth solenoid valve 14, the first solenoid valve 6, the fourth solenoid valve 7, and the third solenoid valve 11 are opened, and the first one-way valve 12 and the second one-way valve are opened. The valve 15 is in circulation and the compressor is running. The refrigerant flows out of the compressor 1 and passes through the outdoor heat exchanger 3. The first part passes through the fifth solenoid valve 14 and enters the high-pressure liquid storage tank 9, and the second part passes through the fourth solenoid valve 7 and The second electronic expansion valve 13 enters the indoor heat exchanger 2, and finally returns to the compressor 1 through the enterprise separator 16 to provide cooling capacity for the room. The third part enters through the first solenoid valve 6 and the first electronic expansion valve 7 Go to the dehumidification heat exchanger 4 to dehumidify the fresh air. The refrigerant at the outlet of the dehumidifier evaporator 4 flows through the second supercooling pipeline of the cooler 8 through the third solenoid valve 11, in the supercooler 8 and the first supercooling pipeline (outdoor heat exchanger 3 outlet) The refrigerant exchanges heat to increase the degree of subcooling at the outlet of the outdoor heat exchanger 3, and finally returns to the compressor 1 through the first check valve 12, the second check valve 15 and the gas-liquid separator 16.
综上所述，根据本申请的空调系统，在系统内设置有过冷回路，以通过除湿回路的冷媒与室外换热器出口处的冷媒进行热交换，降低室外换热器出口的温度，提高过冷度，从而提升空调的能效。In summary, according to the air conditioning system of the present application, a supercooling circuit is provided in the system to exchange heat between the refrigerant in the dehumidification circuit and the refrigerant at the outlet of the outdoor heat exchanger, so as to reduce the temperature at the outlet of the outdoor heat exchanger and increase The degree of supercooling improves the energy efficiency of the air conditioner.
本申请还提出一种空调系统的控制方法。This application also proposes a control method of the air conditioning system.
空调系统包括压缩机、室内换热器和室外换热器，压缩机、室外换热器和室内换热器依次连接组成第一室内换热回路，其特征在于，空调系统还包括：除湿换热器，除湿换热器、压缩机和室外换热器形成第一除湿回路。The air-conditioning system includes a compressor, an indoor heat exchanger, and an outdoor heat exchanger. The compressor, the outdoor heat exchanger and the indoor heat exchanger are connected in sequence to form a first indoor heat exchange circuit, characterized in that the air-conditioning system also includes: dehumidification and heat exchange The dehumidification heat exchanger, the compressor and the outdoor heat exchanger form the first dehumidification circuit.
图2为本申请实施例的空调系统的控制方法的流程图。如图2所示，该空调系统的控制方法，包括以下步骤：Fig. 2 is a flowchart of a control method of an air conditioning system according to an embodiment of the application. As shown in Figure 2, the control method of the air conditioning system includes the following steps:
S201：检测并识别除湿蒸发器出风口处的湿度小于预设湿度，控制第一除湿回路中的冷媒流量减小。S201: Detect and identify that the humidity at the air outlet of the dehumidification evaporator is less than a preset humidity, and control the flow of refrigerant in the first dehumidification circuit to decrease.
S202：检测并识别除湿蒸发器出风口处的湿度大于预设湿度，控制第一除湿回路中的冷媒流量增大。S202: Detect and identify that the humidity at the air outlet of the dehumidification evaporator is greater than a preset humidity, and control the flow of refrigerant in the first dehumidification circuit to increase.
进一步地，如图3所示，还包括：Further, as shown in Figure 3, it also includes:
S301：检测并识别除湿蒸发器出风口处的湿度小于预设湿度，控制除湿换热器的转速降低。S301: Detect and identify that the humidity at the air outlet of the dehumidification evaporator is less than the preset humidity, and control the rotation speed of the dehumidification heat exchanger to decrease.
S302：检测并识别除湿蒸发器出风口处的湿度大于预设湿度，控制除湿换热器的转速增大。S302: Detect and identify that the humidity at the air outlet of the dehumidification evaporator is greater than the preset humidity, and control the rotation speed of the dehumidification heat exchanger to increase.
也就是说，可在除湿蒸发器出风口处设置湿度检测装置，用于检测除湿蒸发器出风口处的湿度，并与用户设置的预设湿度进行比较，当除湿蒸发器出风口处的湿度小于预设湿度时，控制第一电子膨胀阀的开度减小以减小第一除湿回路中的冷媒流量，并控制除湿蒸发器的转速降低，以提高除湿量；当除湿蒸发器出风口处的湿度大于预设湿度时，控制第一电子膨胀阀的开度增大以增大第一除湿回路中的冷媒流量，并控制除湿蒸发器的转速升 高，以提减少湿量。In other words, a humidity detection device can be set at the air outlet of the dehumidification evaporator to detect the humidity at the air outlet of the dehumidification evaporator and compare it with the preset humidity set by the user. When the humidity at the air outlet of the dehumidification evaporator is less than When the humidity is preset, the opening degree of the first electronic expansion valve is controlled to decrease to reduce the refrigerant flow in the first dehumidification circuit, and the rotation speed of the dehumidification evaporator is controlled to decrease to increase the dehumidification capacity; When the humidity is greater than the preset humidity, the opening degree of the first electronic expansion valve is controlled to increase to increase the refrigerant flow in the first dehumidification circuit, and the rotation speed of the dehumidification evaporator is controlled to increase to reduce the humidity.
进一步地，空调系统还包括过冷器，过冷器的第一过冷管路的出口与室内换热器相连，以使第一过冷管路串联至第一室内换热回路中，除湿换热器、第二过冷管路、压缩机、室外换热器和过冷器的第一过冷回路形成第二除湿回路。Further, the air conditioning system further includes a subcooler, and the outlet of the first subcooling pipeline of the subcooler is connected to the indoor heat exchanger, so that the first subcooling pipeline is connected in series to the first indoor heat exchange circuit, and the dehumidification exchange The first subcooling circuit of the heat exchanger, the second subcooling pipeline, the compressor, the outdoor heat exchanger, and the subcooler forms a second dehumidification circuit.
空调系统的控制方法，如图4所示，还包括：The control method of the air conditioning system, as shown in Figure 4, also includes:
S401：获取室内换热器的出风口处的第一温度和除湿换热器的出风口处的第二温度。S401: Obtain the first temperature at the air outlet of the indoor heat exchanger and the second temperature at the air outlet of the dehumidifying heat exchanger.
S402：根据第一温度和第二温度的差值以及大小关系，控制第二除湿回路中的冷媒流量。S402: Control the refrigerant flow rate in the second dehumidification circuit according to the difference between the first temperature and the second temperature and the magnitude relationship.
进一步地，如图5所示，步骤S402还包括：Further, as shown in FIG. 5, step S402 further includes:
S501：检测并识别第一温度大于第二温度且差值大于预设差值，则控制第二除湿回路中的冷媒流量增大。S501: Detect and identify that the first temperature is greater than the second temperature and the difference is greater than the preset difference, then control the refrigerant flow in the second dehumidification circuit to increase.
S502：检测并识别第一温度小于第二温度且差值大于预设差值，则控制第二除湿回路中的冷媒流量减小。S502: Detect and identify that the first temperature is less than the second temperature and the difference is greater than the preset difference, then control the refrigerant flow rate in the second dehumidification circuit to decrease.
也就是说，可在室内换热器的出风口处设置温度检测单元，用于检测室内换热器的出风口处的第一温度T1，以及在除湿蒸发器的出风口处设置温度检测装置，用于检测除湿蒸发器的出风口处的第一温度T，并计算第一温度T1和第二温度T之间的差值T1-T与预设差值M之间的大小关系。That is to say, a temperature detection unit can be provided at the air outlet of the indoor heat exchanger to detect the first temperature T1 at the air outlet of the indoor heat exchanger, and a temperature detection device can be provided at the air outlet of the dehumidification evaporator, It is used to detect the first temperature T at the air outlet of the dehumidification evaporator, and calculate the magnitude relationship between the difference T1-T between the first temperature T1 and the second temperature T and the preset difference M.
当第一温度T1大于第二温度T且差值T1-T大于预设差值M时，则说明此时两处的温度差别较大，两股空气的热交换消耗的能量较大，因此，控制第一电子膨胀阀的开度增大并控制冷媒第二电磁阀打开，以增大第二除湿回路中的冷媒流量；当第一温度T1小于第二温度T且差值T1-T大于预设差值M时，则说明此时两处的温度差别较大，两股空气的热交换消耗的能量较大，对节能不利，因此，控制第一电子膨胀阀的开度减小，以减少第二除湿回路中的冷媒流量。When the first temperature T1 is greater than the second temperature T and the difference T1-T is greater than the preset difference M, it means that the temperature difference between the two places is relatively large at this time, and the heat exchange between the two air streams consumes relatively large energy. Therefore, Control the opening of the first electronic expansion valve to increase and control the opening of the second solenoid valve of the refrigerant to increase the refrigerant flow in the second dehumidification circuit; when the first temperature T1 is less than the second temperature T and the difference T1-T is greater than the preset value When the difference value M is set, it means that the temperature difference between the two places is large at this time, and the heat exchange of the two air streams consumes a large amount of energy, which is not good for energy saving. Therefore, the opening degree of the first electronic expansion valve is controlled to decrease to reduce The refrigerant flow rate in the second dehumidification circuit.
应当理解的是，当第一温度T1和第二温度T的差值T1-T小于或等于预设差值M时，无论第一温度T1大于第二温度T，还是第一温度T1小于第二温度T，均表明此时两处的温度差别在一定范围内，默认两股空气的热交换消耗的能量较小，此时新风功能和除湿功能达到一个相对节能的程度。It should be understood that when the difference T1-T between the first temperature T1 and the second temperature T is less than or equal to the preset difference M, no matter whether the first temperature T1 is greater than the second temperature T or the first temperature T1 is less than the second temperature T1. The temperature T indicates that the temperature difference between the two places is within a certain range at this time. By default, the heat exchange of the two air streams consumes less energy. At this time, the fresh air function and the dehumidification function reach a relatively energy-saving degree.
综上所述，根据本申请的控制方法，能够通过控制进入室内风道新风温度(除湿蒸发器的出风口处的第一温度T)与室内风道经过室内换热器的回风温度(室内换热器的出风口处的第一温度T1)的温度差在一定范围内，减少两股空气的温度差，进而减少两股空气的能效消耗，从而达到节能的效果。In summary, according to the control method of the present application, the temperature of the fresh air entering the indoor air duct (the first temperature T at the air outlet of the dehumidification evaporator) and the return air temperature of the indoor air duct passing through the indoor heat exchanger (indoor The temperature difference of the first temperature T1) at the air outlet of the heat exchanger is within a certain range, which reduces the temperature difference between the two air streams, thereby reducing the energy efficiency consumption of the two air streams, thereby achieving the effect of energy saving.
为了实现上述实施例，本申请还提出一种空调系统的控制装置，包括控制模块，用于 前述的控制方法。In order to implement the above-mentioned embodiments, the present application also proposes a control device of an air-conditioning system, including a control module, which is used in the aforementioned control method.
为了实现上述实施例，本申请还提出一种计算机可读存储介质，其上存储有计算机程序，该程序被处理器执行时实现前述的空调系统的控制方法。In order to implement the above-mentioned embodiments, the present application also proposes a computer-readable storage medium on which a computer program is stored, and when the program is executed by a processor, the aforementioned air conditioning system control method is realized.
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本申请的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。In the description of this specification, descriptions with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean specific features described in conjunction with the embodiment or example , The structure, materials, or characteristics are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples and the features of the different embodiments or examples described in this specification without contradicting each other.
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本申请的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present application, "a plurality of" means at least two, such as two, three, etc., unless specifically defined otherwise.
流程图中或在此以其他方式描述的任何过程或方法描述可以被理解为，表示包括一个或更多个用于实现定制逻辑功能或过程的步骤的可执行指令的代码的模块、片段或部分，并且本申请的优选实施方式的范围包括另外的实现，其中可以不按所示出或讨论的顺序，包括根据所涉及的功能按基本同时的方式或按相反的顺序，来执行功能，这应被本申请的实施例所属技术领域的技术人员所理解。Any process or method description described in the flowchart or described in other ways herein can be understood as a module, segment or part of code that includes one or more executable instructions for implementing custom logic functions or steps of the process , And the scope of the preferred embodiments of the present application includes additional implementations, which may not be in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order according to the functions involved. This should It is understood by those skilled in the art to which the embodiments of the present application belong.
在流程图中表示或在此以其他方式描述的逻辑和/或步骤，例如，可以被认为是用于实现逻辑功能的可执行指令的定序列表，可以具体实现在任何计算机可读介质中，以供指令执行系统、装置或设备(如基于计算机的系统、包括处理器的系统或其他可以从指令执行系统、装置或设备取指令并执行指令的系统)使用，或结合这些指令执行系统、装置或设备而使用。就本说明书而言，"计算机可读介质"可以是任何可以包含、存储、通信、传播或传输程序以供指令执行系统、装置或设备或结合这些指令执行系统、装置或设备而使用的装置。计算机可读介质的更具体的示例(非穷尽性列表)包括以下：具有一个或多个布线的电连接部(电子装置)，便携式计算机盘盒(磁装置)，随机存取存储器(RAM)，只读存储器(ROM)，可擦除可编辑只读存储器(EPROM或闪速存储器)，光纤装置，以及便携式光盘只读存储器(CDROM)。另外，计算机可读介质甚至可以是可在其上打印所述程序的纸或其他合适的介质，因为可以例如通过对纸或其他介质进行光学扫描，接着进行编辑、解译或必要时以其他合适方式进行处理来以电子方式获得所述程序，然后将其存储在计算机存储器中。The logic and/or steps represented in the flowchart or described in other ways herein, for example, can be considered as a sequenced list of executable instructions for implementing logic functions, and can be embodied in any computer-readable medium, For use by instruction execution systems, devices, or equipment (such as computer-based systems, systems including processors, or other systems that can fetch and execute instructions from instruction execution systems, devices, or equipment), or combine these instruction execution systems, devices Or equipment. For the purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transmit a program for use by an instruction execution system, device, or device or in combination with these instruction execution systems, devices, or devices. More specific examples (non-exhaustive list) of computer readable media include the following: electrical connections (electronic devices) with one or more wiring, portable computer disk cases (magnetic devices), random access memory (RAM), Read only memory (ROM), erasable and editable read only memory (EPROM or flash memory), fiber optic devices, and portable compact disk read only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program can be printed, because it can be used, for example, by optically scanning the paper or other medium, followed by editing, interpretation, or other suitable media if necessary. The program is processed in a way to obtain the program electronically and then stored in the computer memory.
应当理解，本申请的各部分可以用硬件、软件、固件或它们的组合来实现。在上述实施方式中，多个步骤或方法可以用存储在存储器中且由合适的指令执行系统执行的软件或固件来实现。如，如果用硬件来实现和在另一实施方式中一样，可用本领域公知的下列技术中的任一项或他们的组合来实现：具有用于对数据信号实现逻辑功能的逻辑门电路的离散逻辑电路，具有合适的组合逻辑门电路的专用集成电路，可编程门阵列(PGA)，现场可编程门阵列(FPGA)等。It should be understood that each part of this application can be implemented by hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if it is implemented by hardware as in another embodiment, it can be implemented by any one or a combination of the following technologies known in the art: Discrete logic gate circuits with logic functions for data signals Logic circuit, application specific integrated circuit with suitable combinational logic gate circuit, programmable gate array (PGA), field programmable gate array (FPGA), etc.
本技术领域的普通技术人员可以理解实现上述实施例方法携带的全部或部分步骤是可以通过程序来指令相关的硬件完成，所述的程序可以存储于一种计算机可读存储介质中，该程序在执行时，包括方法实施例的步骤之一或其组合。A person of ordinary skill in the art can understand that all or part of the steps carried in the method of the foregoing embodiments can be implemented by a program instructing relevant hardware to complete. The program can be stored in a computer-readable storage medium, and the program can be stored in a computer-readable storage medium. When executed, it includes one of the steps of the method embodiment or a combination thereof.
此外，在本申请各个实施例中的各功能单元可以集成在一个处理模块中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。所述集成的模块如果以软件功能模块的形式实现并作为独立的产品销售或使用时，也可以存储在一个计算机可读取存储介质中。In addition, each functional unit in each embodiment of the present application may be integrated into one processing module, or each unit may exist alone physically, or two or more units may be integrated into one module. The above-mentioned integrated modules can be implemented in the form of hardware or software function modules. If the integrated module is implemented in the form of a software function module and sold or used as an independent product, it can also be stored in a computer readable storage medium.
上述提到的存储介质可以是只读存储器，磁盘或光盘等。尽管上面已经示出和描述了本申请的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本申请的限制，本领域的普通技术人员在本申请的范围内可以对上述实施例进行变化、修改、替换和变型。The aforementioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc. Although the embodiments of the present application have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and should not be construed as limiting the present application. A person of ordinary skill in the art can comment on the foregoing within the scope of the present application. The embodiment undergoes changes, modifications, substitutions, and modifications.

Claims (12)

  1. 一种空调系统，所述空调系统包括压缩机、室内换热器和室外换热器，所述压缩机、所述室外换热器和所述室内换热器依次连接组成第一室内换热回路，其特征在于，所述空调系统还包括：An air-conditioning system, the air-conditioning system comprising a compressor, an indoor heat exchanger and an outdoor heat exchanger, the compressor, the outdoor heat exchanger and the indoor heat exchanger are sequentially connected to form a first indoor heat exchange circuit , Characterized in that, the air conditioning system further includes:
    除湿换热器，所述除湿换热器的出口与所述压缩机相连，所述除湿换热器的入口与所述室外换热器相连，以使所述除湿换热器、所述压缩机和所述室外换热器形成第一除湿回路。Dehumidification heat exchanger, the outlet of the dehumidification heat exchanger is connected to the compressor, and the inlet of the dehumidification heat exchanger is connected to the outdoor heat exchanger, so that the dehumidification heat exchanger and the compressor And the outdoor heat exchanger form a first dehumidification circuit.
  2. 根据权利要求1所述的空调系统，其特征在于，还包括：The air conditioning system according to claim 1, further comprising:
    过冷器，所述过冷器包括第一过冷管路和第二过冷管路；A subcooler, the subcooler includes a first supercooling pipeline and a second supercooling pipeline;
    其中，所述第一过冷管路的入口与所述室外换热器相连，所述第一过冷管路的出口与所述室内换热器相连，以使所述第一过冷管路串联至所述第一室内换热回路中；Wherein, the inlet of the first supercooling pipeline is connected with the outdoor heat exchanger, and the outlet of the first supercooling pipeline is connected with the indoor heat exchanger, so that the first supercooling pipeline Connected in series to the first indoor heat exchange loop;
    所述第二过冷管路的入口与所述除湿换热器的出口相连，所述第二过冷管路的出口与所述压缩机相连，所述第一过冷管路的出口与所述除湿换热器相连；其中，所述除湿换热器、所述第二过冷管路、所述压缩机、所述室外换热器和所述第一过冷回路形成第二除湿回路，所述第一过冷管路和所述第二过冷管路之间进行热交换。The inlet of the second supercooling pipeline is connected to the outlet of the dehumidification heat exchanger, the outlet of the second supercooling pipeline is connected to the compressor, and the outlet of the first supercooling pipeline is connected to the outlet of the dehumidification heat exchanger. The dehumidification heat exchanger is connected; wherein, the dehumidification heat exchanger, the second supercooling pipeline, the compressor, the outdoor heat exchanger and the first supercooling circuit form a second dehumidification circuit, Heat exchange is performed between the first supercooling pipeline and the second supercooling pipeline.
  3. 根据权利要求2所述的空调系统，其特征在于，所述除湿换热器的入口还设置有第一电子膨胀阀和第一电磁阀。The air conditioning system according to claim 2, wherein the inlet of the dehumidification heat exchanger is further provided with a first electronic expansion valve and a first solenoid valve.
  4. 根据权利要求3所述的空调系统，其特征在于，所述过冷器与所述除湿蒸发器之间设置有高压储液罐和第二电磁阀，所述第一过冷管路的出口与所述高压储液罐相连，所述高压储液罐与所述第二电磁阀相连。The air conditioning system according to claim 3, wherein a high-pressure liquid storage tank and a second solenoid valve are provided between the supercooler and the dehumidification evaporator, and the outlet of the first supercooling pipeline is connected to The high-pressure liquid storage tank is connected, and the high-pressure liquid storage tank is connected with the second solenoid valve.
  5. 根据权利要求3所述的空调系统，其特征在于，还包括第三电磁阀和第一单向阀；The air conditioning system according to claim 3, further comprising a third solenoid valve and a first one-way valve;
    所述第三电磁阀设置在所述除湿换热器的出口和所述第二过冷管路的入口之间；所述第一单向阀设置在所述第二过冷管路的出口和所述压缩机之间，以通过所述第三电磁阀和所述第一单向阀控制所述第二除湿回路开启。The third solenoid valve is arranged between the outlet of the dehumidification heat exchanger and the inlet of the second supercooling pipeline; the first one-way valve is arranged between the outlet of the second supercooling pipeline and Between the compressors, the second dehumidification circuit is controlled to open through the third solenoid valve and the first one-way valve.
  6. 根据权利要求1所述的空调系统，其特征在于，还包括第四电磁阀；The air conditioning system according to claim 1, further comprising a fourth solenoid valve;
    所述第四电磁阀设置于所述室内换热器的入口，以控制所述第一室内换热回路的开启和关闭。The fourth solenoid valve is arranged at the entrance of the indoor heat exchanger to control the opening and closing of the first indoor heat exchange circuit.
  7. 一种空调系统的控制方法，其特征在于，所述空调系统包括压缩机、室内换热器和室外换热器，所述压缩机、所述室外换热器和所述室内换热器依次连接组成第一室内换热回路，其特征在于，所述空调系统还包括：除湿换热器，所述除湿换热器、所述压缩机和所述室外换热器形成第一除湿回路；A control method of an air conditioning system, characterized in that the air conditioning system includes a compressor, an indoor heat exchanger, and an outdoor heat exchanger, and the compressor, the outdoor heat exchanger and the indoor heat exchanger are connected in sequence A first indoor heat exchange circuit is formed, wherein the air conditioning system further includes a dehumidification heat exchanger, and the dehumidification heat exchanger, the compressor, and the outdoor heat exchanger form a first dehumidification circuit;
    所述控制方法包括：The control method includes:
    检测并识别所述除湿蒸发器出风口处的湿度小于预设湿度，控制所述第一除湿回路中的冷媒流量减小；Detecting and identifying that the humidity at the air outlet of the dehumidification evaporator is less than a preset humidity, and controlling the flow of refrigerant in the first dehumidification circuit to decrease;
    检测并识别所述除湿蒸发器出风口处的湿度大于预设湿度，控制所述第一除湿回路中的冷媒流量增大。It is detected and recognized that the humidity at the air outlet of the dehumidification evaporator is greater than a preset humidity, and the flow of the refrigerant in the first dehumidification circuit is controlled to increase.
  8. 根据权利要求7所述的控制方法，其特征在于，还包括：The control method according to claim 7, further comprising:
    检测并识别所述除湿蒸发器出风口处的湿度小于预设湿度，控制所述除湿换热器的转速降低；Detecting and identifying that the humidity at the air outlet of the dehumidification evaporator is less than a preset humidity, and controlling the rotation speed of the dehumidification heat exchanger to decrease;
    检测并识别所述除湿蒸发器出风口处的湿度大于预设湿度，控制所述除湿换热器的转速增大。It is detected and recognized that the humidity at the air outlet of the dehumidification evaporator is greater than a preset humidity, and the rotation speed of the dehumidification heat exchanger is controlled to increase.
  9. 根据权利要求8所述的控制方法，其特征在于，所述空调系统还包括过冷器，所述过冷器的第一过冷管路的出口与所述室内换热器相连，以使所述第一过冷管路串联至所述第一室内换热回路中，所述除湿换热器、所述第二过冷管路、所述压缩机、所述室外换热器和所述过冷器的第一过冷回路形成第二除湿回路；The control method according to claim 8, wherein the air conditioning system further comprises a subcooler, and the outlet of the first subcooling pipeline of the subcooler is connected to the indoor heat exchanger, so that the The first subcooling pipeline is connected in series to the first indoor heat exchange circuit, and the dehumidification heat exchanger, the second supercooling pipeline, the compressor, the outdoor heat exchanger and the supercooling The first subcooling circuit of the cooler forms a second dehumidification circuit;
    所述控制方法还包括：The control method further includes:
    获取所述室内换热器的出风口处的第一温度和所述除湿换热器的出风口处的第二温度；Acquiring the first temperature at the air outlet of the indoor heat exchanger and the second temperature at the air outlet of the dehumidifying heat exchanger;
    根据所述第一温度和所述第二温度的差值以及大小关系，控制第二除湿回路中的冷媒流量。According to the difference between the first temperature and the second temperature and the magnitude relationship, the flow rate of the refrigerant in the second dehumidification circuit is controlled.
  10. 根据权利要求9所述的控制方法，其特征在于，所述根据所述第一温度和所述第二温度的差值以及大小关系，控制第二除湿回路中的冷媒流量，包括：The control method according to claim 9, wherein the controlling the refrigerant flow rate in the second dehumidification circuit according to the difference between the first temperature and the second temperature and the magnitude relationship comprises:
    检测并识别所述第一温度大于所述第二温度且所述差值大于预设差值，则控制所述第二除湿回路中的冷媒流量增大；Detecting and identifying that the first temperature is greater than the second temperature and the difference is greater than a preset difference, controlling the flow of refrigerant in the second dehumidification circuit to increase;
    检测并识别所述第一温度小于所述第二温度且所述差值大于所述预设差值，则控制所述第二除湿回路中的冷媒流量减小。It is detected and recognized that the first temperature is less than the second temperature and the difference is greater than the preset difference, then the flow of the refrigerant in the second dehumidification circuit is controlled to decrease.
  11. 一种空调系统的控制装置，其特征在于，包括控制模块，用于实现如权利了要求7-10中任一所述的控制方法。A control device for an air conditioning system, which is characterized by comprising a control module for implementing the control method according to any one of claims 7-10.
  12. 一种计算机可读存储介质，其上存储有计算机程序，其特征在于，该程序被处理器执行时实现如权利要求7-10中任一所述的空调系统的控制方法。A computer-readable storage medium having a computer program stored thereon, wherein the program is executed by a processor to realize the control method of the air-conditioning system according to any one of claims 7-10.
PCT/CN2019/109055 2019-09-04 2019-09-29 Air-conditioning system and control method therefor WO2021042437A1 (en)

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