CN111102669A - Air conditioning system with multiple refrigerant loops and control method and device thereof - Google Patents

Air conditioning system with multiple refrigerant loops and control method and device thereof Download PDF

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Publication number
CN111102669A
CN111102669A CN201911414227.XA CN201911414227A CN111102669A CN 111102669 A CN111102669 A CN 111102669A CN 201911414227 A CN201911414227 A CN 201911414227A CN 111102669 A CN111102669 A CN 111102669A
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CN
China
Prior art keywords
indoor
control
humidity
temperature
electromagnetic valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201911414227.XA
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Chinese (zh)
Inventor
陈升华
钟明
陈虎
蔡双晋
陈英杰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gree Electric Appliances Inc of Zhuhai
Original Assignee
Gree Electric Appliances Inc of Zhuhai
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Application filed by Gree Electric Appliances Inc of Zhuhai filed Critical Gree Electric Appliances Inc of Zhuhai
Priority to CN201911414227.XA priority Critical patent/CN111102669A/en
Publication of CN111102669A publication Critical patent/CN111102669A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00Air-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
    • F24F5/0007Air-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
    • F24F5/001Compression cycle type
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/50Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61Control or safety arrangements characterised by user interfaces or communication using timers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/62Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63Electronic processing
    • F24F11/64Electronic processing using pre-stored data
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/70Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/79Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling the direction of the supplied air
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/89Arrangement or mounting of control or safety devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/06Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units
    • F24F3/065Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units with a plurality of evaporators or condensers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B13/00Compression machines, plant or systems with reversible cycle
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B41/00Fluid-circulation arrangements
    • F25B41/20Disposition of valves, e.g. of on-off valves or flow control valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B49/00Arrangement or mounting of control or safety devices
    • F25B49/02Arrangement or mounting of control or safety devices for compression type machines, plant or systems
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00Control inputs relating to air properties
    • F24F2110/10Temperature
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00Control inputs relating to air properties
    • F24F2110/20Humidity
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2120/00Control inputs relating to users or occupants
    • F24F2120/10Occupancy
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B2313/00Compression machines, plant, or systems with reversible cycle not otherwise provided for
    • F25B2313/023Compression machines, plant, or systems with reversible cycle not otherwise provided for using multiple indoor units

Abstract

The invention discloses an air conditioning system with multiple refrigerant loops and a control method and a control device thereof, wherein the system comprises: the compressor, the four-way valve, the throttling device, the outdoor heat exchanger and the indoor heat exchanger are connected in sequence; the indoor heat exchanger at least comprises a first indoor heat exchanger and a second indoor heat exchanger; the system comprises two refrigerant loops, a first refrigerant loop and a second refrigerant loop; the first indoor heat exchanger is positioned in the first refrigerant loop and used for exchanging heat with a refrigerant through the first indoor heat exchanger; the first indoor heat exchanger and the second indoor heat exchanger are positioned in the second refrigerant loop and used for exchanging heat with the refrigerant through the first indoor heat exchanger and the second indoor heat exchanger. The air conditioning unit solves the problem that the use mode of the multi-split indoor heat exchanger in the prior art is fixed, and improves the use flexibility of the air conditioning unit.

Description

Air conditioning system with multiple refrigerant loops and control method and device thereof
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioning system with multiple refrigerant loops and a control method and device thereof.
Background
The number of indoor heat exchangers of an existing air conditioning unit is usually fixed, a common air conditioning unit comprises one indoor heat exchanger, and a multi-split air conditioning unit comprises a plurality of indoor heat exchangers. During the use process of the air conditioner, the opening or closing of the indoor heat exchanger of the air conditioning unit is usually determined according to the on-off command, and the indoor heat exchanger of the air conditioning unit is opened or closed simultaneously, so that the use mode is fixed.
Aiming at the problem that the use mode of the multi-connected indoor heat exchanger in the related technology is fixed, an effective solution is not provided at present.
Disclosure of Invention
The invention provides an air conditioning system with multiple refrigerant loops and a control method and device thereof, which at least solve the problem that the use mode of a heat exchanger in a multi-connected indoor unit is fixed in the prior art.
To solve the above technical problem, according to an aspect of an embodiment of the present invention, there is provided an air conditioning system including: the compressor, the four-way valve, the throttling device, the outdoor heat exchanger and the indoor heat exchanger are connected in sequence; the indoor heat exchanger at least comprises a first indoor heat exchanger and a second indoor heat exchanger; the system comprises two refrigerant loops, a first refrigerant loop and a second refrigerant loop; the first indoor heat exchanger is positioned in the first refrigerant loop and used for exchanging heat with a refrigerant through the first indoor heat exchanger; the first indoor heat exchanger and the second indoor heat exchanger are positioned in the second refrigerant loop and used for exchanging heat with the refrigerant through the first indoor heat exchanger and the second indoor heat exchanger.
Further, the system further comprises: and the first electromagnetic valve is positioned between the outdoor heat exchanger and the first indoor heat exchanger.
Further, still include: the third electromagnetic valve is positioned in the first refrigerant loop; and the third electromagnetic valve is positioned between the first indoor heat exchanger and the outdoor heat exchanger.
Further, the first indoor heat exchanger and the second indoor heat exchanger are connected in series.
Further, still include: the second electromagnetic valve is positioned in the second refrigerant loop; and the second electromagnetic valve is positioned between the first indoor heat exchanger and the second indoor heat exchanger.
Further, the system further comprises: the temperature sensor is used for detecting the indoor temperature and determining a refrigerant loop according to the indoor temperature; the humidity sensor is used for detecting the indoor humidity and determining a refrigerant loop according to the indoor humidity; and the infrared heat radiation device is used for detecting the indoor people flow density and determining the refrigerant loop according to the indoor people flow density.
According to another aspect of the embodiments of the present invention, there is provided an air conditioning system control method applied to the air conditioning system described above, including: acquiring time information or indoor people stream density of a user; determining the priority of a control mode according to the time information or the indoor people flow density; wherein, the control mode at least includes: temperature control and humidity control; and executing corresponding control according to the priority of the control mode.
Further, the time information includes at least: busy hours and idle hours; determining the priority of the control mode according to the time information comprises the following steps: when the time information is busy, determining that the priority of temperature control is higher than that of humidity control; when the time information is idle, it is determined that the humidity control has a higher priority than the temperature control.
Further, determining the priority of the control mode according to the indoor people flow density comprises the following steps: when the indoor people flow density is larger than a preset threshold value, determining that the priority of temperature control is higher than that of humidity control; and when the indoor people stream density is less than or equal to a preset threshold value, determining that the priority of the humidity control is higher than that of the temperature control.
Further, the corresponding control is executed according to the priority of the control mode, and the control method comprises the following steps: executing temperature control when the priority of the temperature control is higher than that of the humidity control; when the priority of the humidity control is higher than that of the temperature control, the humidity control is performed.
Further, the temperature control includes: detecting the indoor temperature; comparing the indoor temperature with a preset temperature; and determining a refrigerant loop according to the comparison result.
Further, the preset temperature includes at least: the temperature control device comprises a first preset temperature, a second preset temperature and a highest set temperature, wherein the first preset temperature is less than the second preset temperature and less than the highest set temperature; determining a refrigerant loop according to the comparison result, comprising: when the indoor temperature is lower than a first preset temperature, controlling a first electromagnetic valve and a second electromagnetic valve to be opened, controlling a third electromagnetic valve to be closed, and performing heat exchange by adopting a second refrigerant loop; when the indoor temperature reaches a first preset temperature, controlling the second electromagnetic valve and the third electromagnetic valve to be partially opened, opening the first electromagnetic valve, and performing heat exchange and a second refrigerant loop by adopting a first refrigerant loop; when the indoor temperature reaches a second preset temperature, the second electromagnetic valve is controlled to be closed, the first electromagnetic valve and the third electromagnetic valve are controlled to be opened, and heat exchange is carried out by adopting a first refrigerant loop; when the indoor temperature reaches the highest set temperature, the second electromagnetic valve is closed, the first electromagnetic valve and the third electromagnetic valve are controlled to operate at the lowest opening degree, and a first refrigerant loop is adopted for heat exchange.
Further, the humidity control includes: detecting indoor humidity; comparing the indoor humidity with a preset humidity; and determining a refrigerant loop according to the comparison result.
Further, the preset humidity at least includes: a first preset humidity and a maximum set humidity, wherein the first preset humidity is less than the maximum set humidity; determining a refrigerant loop according to the comparison result, comprising: when the indoor humidity is lower than a first preset humidity, controlling the first electromagnetic valve and the second electromagnetic valve to normally operate, closing the third electromagnetic valve, and exchanging heat by adopting a second refrigerant loop; when the indoor humidity reaches a first preset humidity, controlling a first electromagnetic valve to be normally opened, controlling a second electromagnetic valve to be small in opening degree, controlling a third electromagnetic valve to be partially opened, and performing heat exchange and a second refrigerant loop by adopting a first refrigerant loop; when the indoor humidity is greater than the first preset humidity and less than the highest set humidity, the opening degree of the first electromagnetic valve and the opening degree of the second electromagnetic valve are controlled to be small, the third electromagnetic valve is closed, a second refrigerant loop is adopted for heat exchange, the air deflector is adjusted, and the air outlet direction is changed.
According to yet another aspect of an embodiment of the present invention, there is provided a storage medium containing computer-executable instructions for performing the air conditioning system control method as described above when executed by a computer processor.
In the present invention, a novel air conditioning system is provided, which mainly comprises: the system comprises a first indoor heat exchanger, a second indoor heat exchanger, a first refrigerant loop and a second refrigerant loop; the first indoor heat exchanger is positioned in the first refrigerant loop and used for exchanging heat with a refrigerant through the first indoor heat exchanger; the first indoor heat exchanger and the second indoor heat exchanger are positioned in the second refrigerant loop and used for exchanging heat with the refrigerant through the first indoor heat exchanger and the second indoor heat exchanger. Through the system setting, different refrigerant loops are formed by the indoor heat exchangers, and different heating or refrigerating capacities can be achieved, so that the problem that the using mode of the multi-connected indoor heat exchanger in the prior art is fixed is effectively solved, and the using flexibility of the air conditioning unit is improved.
Drawings
Fig. 1 is a block diagram of an alternative configuration of an air conditioning system according to an embodiment of the present invention;
FIG. 2 is an alternative flow chart of an air conditioning system control method according to an embodiment of the present invention; and
fig. 3 is an alternative configuration block diagram of an air conditioning system control apparatus according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
Example 1
In a preferred embodiment 1 of the present invention, an air conditioning system is provided. Specifically, fig. 1 shows an alternative structural block diagram of the system, and as shown in fig. 1, the system includes:
the compressor, the four-way valve, the throttling device, the outdoor heat exchanger and the indoor heat exchanger are connected in sequence; the indoor heat exchanger at least comprises a first indoor heat exchanger and a second indoor heat exchanger; the system comprises two refrigerant loops, a first refrigerant loop and a second refrigerant loop; the first indoor heat exchanger is positioned in the first refrigerant loop and used for exchanging heat with a refrigerant through the first indoor heat exchanger; the first indoor heat exchanger and the second indoor heat exchanger are positioned in the second refrigerant loop and used for exchanging heat with the refrigerant through the first indoor heat exchanger and the second indoor heat exchanger.
In the above embodiment, a novel air conditioning system is provided, which mainly includes: the system comprises a first indoor heat exchanger, a second indoor heat exchanger, a first refrigerant loop and a second refrigerant loop; the first indoor heat exchanger is positioned in the first refrigerant loop and used for exchanging heat with a refrigerant through the first indoor heat exchanger; the first indoor heat exchanger and the second indoor heat exchanger are positioned in the second refrigerant loop and used for exchanging heat with the refrigerant through the first indoor heat exchanger and the second indoor heat exchanger. Through the system setting, different refrigerant loops are formed by the indoor heat exchangers, and different heating or refrigerating capacities can be achieved, so that the problem that the using mode of the multi-connected indoor heat exchanger in the prior art is fixed is effectively solved, and the using flexibility of the air conditioning unit is improved.
In a preferred embodiment of the present invention, the system further includes: and the first electromagnetic valve is positioned between the outdoor heat exchanger and the first indoor heat exchanger. As can be confirmed from fig. 1, the first solenoid valve is located on the first refrigerant circuit and the second refrigerant circuit, and therefore, the first solenoid valve is used to control the first refrigerant circuit and the second refrigerant circuit to open or close.
In addition to the first solenoid valve, the system further comprises: the third electromagnetic valve is positioned in the first refrigerant loop; and the third electromagnetic valve is positioned between the first indoor heat exchanger and the outdoor heat exchanger. The third electromagnetic valve is only positioned in the first refrigerant loop and is used for controlling the first refrigerant loop to be opened or closed.
Wherein, the first indoor heat exchanger and the second indoor heat exchanger are connected in series.
Preferably, the second refrigerant circuit further includes: the second electromagnetic valve is positioned in the second refrigerant loop; and the second electromagnetic valve is positioned between the first indoor heat exchanger and the second indoor heat exchanger. The second electromagnetic valve is only positioned in the second refrigerant loop and is used for controlling the second refrigerant loop to be opened or closed.
Further, the system further comprises: the temperature sensor is used for detecting the indoor temperature and determining a refrigerant loop according to the indoor temperature; the humidity sensor is used for detecting the indoor humidity and determining a refrigerant loop according to the indoor humidity; and the infrared heat radiation device is used for detecting the indoor people flow density and determining the refrigerant loop according to the indoor people flow density. The system also comprises a detection device, wherein the detection device mainly comprises a temperature sensor, a humidity sensor and an infrared heat radiation device. After indoor temperature and humidity change and the change of people flow are detected, opening and closing of the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve are controlled according to the indoor temperature and humidity change and the change of people flow, and flow change in a pipeline is adjusted to meet requirements of users.
The refrigerant circuit comprises two condenser branches, each condenser branch penetrates through the condenser, each condenser branch comprises an inlet end and an outlet end, the inlet end is arranged on a pipeline between the throttling device and the condenser, the outlet end is arranged on a pipeline between the condenser and the compressor, each condenser branch is further provided with an electromagnetic valve, the electromagnetic valves are arranged on the pipelines between the inlet ends and the condensers, the flow path control system of the outer unit further comprises a controller connected with the electromagnetic valves on the condenser branches, and the opening and closing of the electromagnetic valves are controlled to adjust the output capacity of the outer unit.
Example 2
Based on the air conditioning system provided in the above embodiment 1, there is also provided in a preferred embodiment 2 of the present invention an air conditioning system control method, which can be directly applied to the above air conditioning system. In particular, fig. 2 shows an alternative flow chart of the method, which, as shown in fig. 2, comprises the following steps S202-S206:
s202: acquiring time information or indoor people stream density of a user;
s204: determining the priority of a control mode according to the time information or the indoor people flow density; wherein, the control mode at least includes: temperature control and humidity control;
s206: and executing corresponding control according to the priority of the control mode.
Temperature and humidity control among the prior art is generally that single environmental parameter controls, to the control of temperature and humidity, does not have regularly function, can not carry out intelligent control according to real environmental requirement, especially carries out the accurate control of humiture to different time quantum in the school. In schools, the traffic varies very obviously in different periods. In certain time periods, people flow is concentrated, the operation requirement of the air conditioner is increased, and the time period mainly takes temperature control as a main part and takes humidity control as an auxiliary part; people are evacuated in certain time periods, the operation requirement of the air conditioner is reduced, and the time period mainly takes humidity control as a main time and temperature control as an auxiliary time. The temperature and humidity in the room can be automatically controlled according to the conditions of different time periods by the above embodiment.
In a preferred embodiment of the present invention, the time information includes at least: busy hours and idle hours; determining the priority of the control mode according to the time information comprises the following steps: when the time information is busy, determining that the priority of temperature control is higher than that of humidity control; when the time information is idle, it is determined that the humidity control has a higher priority than the temperature control.
In another preferred embodiment of the present invention, the determining the priority of the control mode according to the indoor people flow density includes: when the indoor people flow density is larger than a preset threshold value, determining that the priority of temperature control is higher than that of humidity control; and when the indoor people stream density is less than or equal to a preset threshold value, determining that the priority of the humidity control is higher than that of the temperature control.
Preferably, the corresponding control is executed according to the priority of the control mode, and the control method comprises the following steps: executing temperature control when the priority of the temperature control is higher than that of the humidity control; when the priority of the humidity control is higher than that of the temperature control, the humidity control is performed.
In the above embodiment, the temperature control includes: detecting the indoor temperature; comparing the indoor temperature with a preset temperature; and determining a refrigerant loop according to the comparison result.
Further, the preset temperature includes at least: the temperature control device comprises a first preset temperature, a second preset temperature and a highest set temperature, wherein the first preset temperature is less than the second preset temperature and less than the highest set temperature; determining a refrigerant loop according to the comparison result, comprising: when the indoor temperature is lower than a first preset temperature, controlling a first electromagnetic valve and a second electromagnetic valve to be opened, controlling a third electromagnetic valve to be closed, and performing heat exchange by adopting a second refrigerant loop; when the indoor temperature reaches a first preset temperature, controlling the second electromagnetic valve and the third electromagnetic valve to be partially opened, opening the first electromagnetic valve, and performing heat exchange and a second refrigerant loop by adopting a first refrigerant loop; when the indoor temperature reaches a second preset temperature, the second electromagnetic valve is controlled to be closed, the first electromagnetic valve and the third electromagnetic valve are controlled to be opened, and heat exchange is carried out by adopting a first refrigerant loop; when the indoor temperature reaches the highest set temperature, the second electromagnetic valve is closed, the first electromagnetic valve and the third electromagnetic valve are controlled to operate at the lowest opening degree, and a first refrigerant loop is adopted for heat exchange.
In the above embodiment, the humidity control includes: detecting indoor humidity; comparing the indoor humidity with a preset humidity; and determining a refrigerant loop according to the comparison result.
Further, the preset humidity at least includes: a first preset humidity and a maximum set humidity, wherein the first preset humidity is less than the maximum set humidity; determining a refrigerant loop according to the comparison result, comprising: when the indoor humidity is lower than a first preset humidity, controlling the first electromagnetic valve and the second electromagnetic valve to normally operate, closing the third electromagnetic valve, and exchanging heat by adopting a second refrigerant loop; when the indoor humidity reaches a first preset humidity, controlling a first electromagnetic valve to be normally opened, controlling a second electromagnetic valve to be small in opening degree, controlling a third electromagnetic valve to be partially opened, and performing heat exchange and a second refrigerant loop by adopting a first refrigerant loop; when the indoor humidity is greater than the first preset humidity and less than the highest set humidity, the opening degree of the first electromagnetic valve and the opening degree of the second electromagnetic valve are controlled to be small, the third electromagnetic valve is closed, a second refrigerant loop is adopted for heat exchange, the air deflector is adjusted, the air outlet direction is changed, and the direct blowing of a human body is avoided.
Example 3
Based on the air conditioning system control method provided in the above embodiment 2, in a preferred embodiment 3 of the present invention, an air conditioning system control device is further provided, and specifically, fig. 3 shows an optional structural block diagram of the device, and as shown in fig. 3, the device includes:
the detection module is used for acquiring time information or indoor people stream density;
the controller is used for determining the priority of the control mode according to the time information or the indoor people stream density; wherein, the control mode at least includes: temperature control and humidity control; and executing corresponding control according to the priority of the control mode.
The control device mainly comprises a controller and a detection module, wherein the detection module comprises an air temperature sensor, an air humidity sensor and an infrared heat radiation device. The controller is connected with and controls the opening and closing of the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve to adjust the flow change in the pipeline; the detection module starts the controller after detecting indoor temperature and humidity changes.
The controller control can make different control priorities according to work and rest time or people flow:
control priority when people flow is concentrated, such as class break period in school: humidity control < temperature control;
control priority during crowd evacuation at rest periods in schools, etc.: temperature control < humidity control.
The time work and rest can be directly input into the control system, and the system can also automatically analyze the indoor number according to the infrared heat radiation device.
The unit infrared heat radiation device detects the number of people in a room, the temperature sensor detects the indoor temperature, and the humidity sensor detects the indoor humidity. And sending out an accurate instruction after the operation of the controller module. The number of people in the detection room is large, temperature control is mainly executed, whether the temperature reaches a preset value or not is detected, if the temperature reaches the preset value, the electromagnetic valve is controlled to be opened and closed, and if not, the detection is continuously returned. The number of people in the detection room is small, the humidity control is mainly executed, whether the humidity reaches a preset value or not is detected, if the humidity reaches the preset value, the electromagnetic valve is controlled to be opened and closed, and if not, the detection is continuously returned.
The temperature control comprises the following steps:
before the indoor temperature reaches a first preset temperature Tz-T1, controlling a first electromagnetic valve and a second electromagnetic valve to be opened, and controlling a third electromagnetic valve to be closed, namely, enabling the unit refrigerant to return to the outdoor unit through a second loop;
when the indoor temperature is detected to reach a first preset temperature Tz-T1, controlling the second electromagnetic valve and the third electromagnetic valve to be half opened, opening the first electromagnetic valve, returning a part of refrigerant to the outdoor unit through the first loop, and returning a part of refrigerant to the outdoor unit through the second loop;
when the indoor temperature is detected to reach a second preset temperature Tz-T2, the second electromagnetic valve is controlled to be closed, the first electromagnetic valve and the third electromagnetic valve are controlled to be opened, and the unit refrigerant returns to the outdoor unit after flowing through the first loop;
when the indoor temperature is detected to reach the highest set temperature Tz, the first electromagnetic valve and the third electromagnetic valve are controlled to operate at the lowest opening degree, the second electromagnetic valve is closed, and the unit refrigerant returns to the outdoor unit after flowing through the first loop;
the first preset temperature Tz-T1 is greater than the second preset temperature Tz-T2 and is greater than the highest set temperature Tz.
The humidity control includes the following steps:
when the indoor humidity is lower than the highest set humidity Hs, the opening of the first electromagnetic valve and the opening of the second electromagnetic valve are controlled to be small, the third electromagnetic valve is closed, the refrigerant flows through the second loop, the temperature of the pipe is lower than the dew point temperature of the air, and the air deflector is adjusted upwards;
when the indoor humidity reaches a first preset temperature Hs-H1, controlling the first electromagnetic valve to be normally opened, controlling the opening of the second electromagnetic valve to be small, enabling the temperature of an evaporator tube connected with the second electromagnetic valve to be lower than the dew point temperature of air, and opening part of the third electromagnetic valve, wherein a refrigerant flows through the first loop and the second loop;
when the indoor humidity is detected to be lower than a first preset temperature Hs-H1, controlling the first electromagnetic valve and the second electromagnetic valve to normally operate, closing the third electromagnetic valve, and enabling the refrigerant to flow through the second loop;
wherein the first preset humidity Hs-H1 is less than the highest preset humidity Hs.
With regard to the apparatus in the above embodiments, the specific manner in which each unit and each module performs operations has been described in detail in the embodiments related to the method, and will not be described in detail herein.
Example 4
Based on the air conditioning system control method provided in embodiment 2 above, there is also provided in a preferred embodiment 4 of the present invention a storage medium containing computer-executable instructions for performing the air conditioning system control method as described above when executed by a computer processor.
In the above embodiment, a novel air conditioning system is provided, which mainly includes: the system comprises a first indoor heat exchanger, a second indoor heat exchanger, a first refrigerant loop and a second refrigerant loop; the first indoor heat exchanger is positioned in the first refrigerant loop and used for exchanging heat with a refrigerant through the first indoor heat exchanger; the first indoor heat exchanger and the second indoor heat exchanger are positioned in the second refrigerant loop and used for exchanging heat with the refrigerant through the first indoor heat exchanger and the second indoor heat exchanger. Through the system setting, different refrigerant loops are formed by the indoor heat exchangers, and different heating or refrigerating capacities can be achieved, so that the problem that the using mode of the multi-connected indoor heat exchanger in the prior art is fixed is effectively solved, and the using flexibility of the air conditioning unit is improved.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.

Claims (16)

1. An air conditioning system, comprising:
the compressor, the four-way valve, the throttling device, the outdoor heat exchanger and the indoor heat exchanger are connected in sequence; wherein the indoor heat exchanger comprises at least a first indoor heat exchanger and a second indoor heat exchanger;
the system comprises two refrigerant loops, a first refrigerant loop and a second refrigerant loop; the first indoor heat exchanger is positioned in the first refrigerant loop and used for exchanging heat with a refrigerant through the first indoor heat exchanger;
the first indoor heat exchanger and the second indoor heat exchanger are located in the second refrigerant loop and used for exchanging heat with the refrigerant through the first indoor heat exchanger and the second indoor heat exchanger.
2. The system of claim 1, further comprising:
a first solenoid valve located between the outdoor heat exchanger and the first indoor heat exchanger.
3. The system of claim 1, further comprising:
the third electromagnetic valve is positioned in the first refrigerant loop; wherein the third solenoid valve is located between the first indoor heat exchanger and the outdoor heat exchanger.
4. The system of claim 1, wherein the first indoor heat exchanger and the second indoor heat exchanger are connected in series.
5. The system of claim 4, further comprising: the second electromagnetic valve is positioned in the second refrigerant loop; wherein the second solenoid valve is located between the first indoor heat exchanger and the second indoor heat exchanger.
6. The system of claim 1, further comprising:
the temperature sensor is used for detecting the indoor temperature and determining a refrigerant loop according to the indoor temperature;
the humidity sensor is used for detecting the indoor humidity and determining a refrigerant loop according to the indoor humidity; and
and the infrared heat radiation device is used for detecting the indoor stream density and determining the refrigerant loop according to the indoor stream density.
7. An air conditioning system control method applied to the air conditioning system according to any one of claims 1 to 6, characterized by comprising:
acquiring time information or indoor people stream density of a user;
determining the priority of a control mode according to the time information or the indoor people flow density; wherein, the control mode at least comprises: temperature control and humidity control;
and executing corresponding control according to the priority of the control mode.
8. The method according to claim 7, wherein the time information comprises at least: busy hours and idle hours; determining the priority of the control mode according to the time information, comprising:
when the time information is busy, determining that the priority of the temperature control is higher than that of the humidity control;
and when the time information is idle, determining that the priority of the humidity control is higher than that of the temperature control.
9. The method of claim 7, wherein prioritizing a control mode based on the indoor traffic density comprises:
when the indoor people stream density is larger than a preset threshold value, determining that the priority of the temperature control is higher than that of the humidity control;
and when the indoor people stream density is less than or equal to a preset threshold value, determining that the priority of the humidity control is higher than that of the temperature control.
10. The method according to claim 7, wherein performing the corresponding control according to the priority of the control mode comprises:
performing the temperature control when the priority of the temperature control is higher than the humidity control;
the humidity control is executed when the priority of the humidity control is higher than the temperature control.
11. The method of claim 7, wherein the temperature control comprises:
detecting the indoor temperature;
comparing the indoor temperature with a preset temperature;
and determining a refrigerant loop according to the comparison result.
12. The method according to claim 11, characterized in that said preset temperature comprises at least: the temperature control device comprises a first preset temperature, a second preset temperature and a highest set temperature, wherein the first preset temperature is less than the second preset temperature and less than the highest set temperature; determining a refrigerant loop according to the comparison result, comprising:
when the indoor temperature is lower than the first preset temperature, controlling the first electromagnetic valve and the second electromagnetic valve to be opened, closing the third electromagnetic valve, and performing heat exchange by adopting the second refrigerant loop;
when the indoor temperature reaches the first preset temperature, controlling the second electromagnetic valve and the third electromagnetic valve to be partially opened, opening the first electromagnetic valve, and performing heat exchange by adopting the first refrigerant loop and the second refrigerant loop;
when the indoor temperature reaches a second preset temperature, controlling the second electromagnetic valve to be closed, and controlling the first electromagnetic valve and the third electromagnetic valve to be opened, and performing heat exchange by adopting the first refrigerant loop;
and when the indoor temperature reaches the highest set temperature, the second electromagnetic valve is closed, the first electromagnetic valve and the third electromagnetic valve are controlled to operate at the lowest opening degree, and the first refrigerant loop is adopted for heat exchange.
13. The method of claim 7, wherein the humidity control comprises:
detecting indoor humidity;
comparing the indoor humidity with a preset humidity;
and determining a refrigerant loop according to the comparison result.
14. The method according to claim 13, wherein the preset humidity comprises at least: a first preset humidity and a maximum set humidity, wherein the first preset humidity is less than the maximum set humidity; determining a refrigerant loop according to the comparison result, comprising:
when the indoor humidity is lower than the first preset humidity, controlling the first electromagnetic valve and the second electromagnetic valve to normally operate, closing the third electromagnetic valve, and performing heat exchange by adopting the second refrigerant loop;
when the indoor humidity reaches the first preset humidity, controlling the first electromagnetic valve to be normally opened, controlling the opening of the second electromagnetic valve to be small, partially opening the third electromagnetic valve, and performing heat exchange by adopting the first refrigerant loop and the second refrigerant loop;
when the indoor humidity is higher than the first preset humidity and lower than the highest set humidity, the opening of the first electromagnetic valve and the opening of the second electromagnetic valve are controlled to be small, the third electromagnetic valve is closed, the second refrigerant loop is adopted for heat exchange, the air deflector is adjusted, and the air outlet direction is changed.
15. An air conditioning system control device, characterized by comprising:
the detection module is used for acquiring time information or indoor people stream density;
the controller is used for determining the priority of a control mode according to the time information or the indoor people stream density; wherein, the control mode at least comprises: temperature control and humidity control; and executing corresponding control according to the priority of the control mode.
16. A storage medium containing computer-executable instructions for performing the air conditioning system control method of any one of claims 7 to 14 when executed by a computer processor.
CN201911414227.XA 2019-12-31 2019-12-31 Air conditioning system with multiple refrigerant loops and control method and device thereof Pending CN111102669A (en)

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Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015040691A (en) * 2013-08-23 2015-03-02 株式会社東芝 Air-conditioning control device, air-conditioning system, air-conditioning control method and program
US9297544B2 (en) * 2012-09-04 2016-03-29 Daikin Industries, Ltd. Humidification device
CN105650769A (en) * 2015-10-28 2016-06-08 李国胜 Multi-split radiation type central air conditioning system with variable refrigerant flow
CN205980121U (en) * 2016-08-22 2017-02-22 上海日立电器有限公司 One drags two fresh air conditioning unit systems
CN106537052A (en) * 2016-01-15 2017-03-22 吴鹏 Intelligent adjustment air conditioning system
CN106774564A (en) * 2017-02-23 2017-05-31 郑州云海信息技术有限公司 A kind of remote equipment room humiture real-time monitoring system
CN207065715U (en) * 2017-03-16 2018-03-02 东莞市鑫松电器设备有限公司 A kind of novel energy-conserving temperature-adjustable dehumidifier
CN108489031A (en) * 2018-03-20 2018-09-04 广东美的暖通设备有限公司 Control method, air-conditioner set and the storage medium of air-conditioner set
CN110195916A (en) * 2019-04-25 2019-09-03 天津科技大学 A kind of building air-conditioner energy-saving control system
JP2019158212A (en) * 2018-03-12 2019-09-19 大阪瓦斯株式会社 Air conditioning system
CN110398048A (en) * 2019-07-23 2019-11-01 广东美的暖通设备有限公司 Air-conditioning system, air conditioning control method, air conditioning control device and storage medium
WO2019216647A1 (en) * 2018-05-08 2019-11-14 (주)씽크포비엘 Method for predicting milk yields, tmr nutrient composition to achieve target milk yields, and tmr nutrient composition to achieve target cost, on basis of deep learning-based prediction models

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9297544B2 (en) * 2012-09-04 2016-03-29 Daikin Industries, Ltd. Humidification device
JP2015040691A (en) * 2013-08-23 2015-03-02 株式会社東芝 Air-conditioning control device, air-conditioning system, air-conditioning control method and program
CN105650769A (en) * 2015-10-28 2016-06-08 李国胜 Multi-split radiation type central air conditioning system with variable refrigerant flow
CN106537052A (en) * 2016-01-15 2017-03-22 吴鹏 Intelligent adjustment air conditioning system
CN205980121U (en) * 2016-08-22 2017-02-22 上海日立电器有限公司 One drags two fresh air conditioning unit systems
CN106774564A (en) * 2017-02-23 2017-05-31 郑州云海信息技术有限公司 A kind of remote equipment room humiture real-time monitoring system
CN207065715U (en) * 2017-03-16 2018-03-02 东莞市鑫松电器设备有限公司 A kind of novel energy-conserving temperature-adjustable dehumidifier
JP2019158212A (en) * 2018-03-12 2019-09-19 大阪瓦斯株式会社 Air conditioning system
CN108489031A (en) * 2018-03-20 2018-09-04 广东美的暖通设备有限公司 Control method, air-conditioner set and the storage medium of air-conditioner set
WO2019216647A1 (en) * 2018-05-08 2019-11-14 (주)씽크포비엘 Method for predicting milk yields, tmr nutrient composition to achieve target milk yields, and tmr nutrient composition to achieve target cost, on basis of deep learning-based prediction models
CN110195916A (en) * 2019-04-25 2019-09-03 天津科技大学 A kind of building air-conditioner energy-saving control system
CN110398048A (en) * 2019-07-23 2019-11-01 广东美的暖通设备有限公司 Air-conditioning system, air conditioning control method, air conditioning control device and storage medium

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
李久芳等: ""广州某高校教室冬季热环境现场量测与评估分析"", 《福建建筑》 *
陆向军: "《卓越工程师教育培养计划系列教材 建筑设备工程》", 30 June 2016 *

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