CN113757936B - Air conditioner control system, air conditioner and control method of air conditioner - Google Patents
Air conditioner control system, air conditioner and control method of air conditioner Download PDFInfo
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- CN113757936B CN113757936B CN202111068017.7A CN202111068017A CN113757936B CN 113757936 B CN113757936 B CN 113757936B CN 202111068017 A CN202111068017 A CN 202111068017A CN 113757936 B CN113757936 B CN 113757936B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
- F24F11/67—Switching between heating and cooling modes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/20—Humidity
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Fluid Mechanics (AREA)
- Human Computer Interaction (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses an air conditioner control system, an air conditioner and a control method of the air conditioner, wherein the air conditioner control system comprises: the system comprises a controller, a compressor, a four-way valve assembly, an outdoor heat exchanger, an outdoor fan, an outdoor electronic expansion valve, first to third indoor electronic expansion valves, first and second indoor heat exchangers and first and second indoor fans; the controller controls one or more of the outdoor electronic expansion valve, the first to third indoor electronic expansion valves, and the first and second indoor fans according to an operation mode of the air conditioner to throttle the air conditioner. The invention controls the opening of one or more electronic expansion valves to perform different throttling controls on the two sections of heat exchangers of the indoor unit, divides the two sections of heat exchangers into different temperature areas, and reasonably controls the temperature change of a mixed air field through the temperature difference generated by the air fields of the two sections of heat exchangers, thereby achieving the purposes of temperature control and dehumidification.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner control system, an air conditioner and a control method of the air conditioner.
Background
Along with the continuous development of air conditioning technology, the function of air conditioner is also more and more abundant, and among the many functions of air conditioner, accuse temperature dehumidification is the function that the user will often use, can satisfy user's comfort level demand through accuse temperature dehumidification function.
At present, in many existing ways for realizing temperature control and dehumidification functions in the industry, the related systems are complex in structure, high in equipment cost and difficult to realize, and are mostly applied to household cabinets and on-hook air conditioners, so that the application range is limited.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art.
Therefore, an object of the present invention is to provide an air conditioning control system, which performs different throttling controls on two sections of heat exchangers of an indoor unit by controlling the opening of one or more electronic expansion valves, divides the two sections of heat exchangers into different temperature zones, and reasonably controls the temperature change of a mixed air field through the temperature difference generated by the air fields of the two sections of heat exchangers, so as to achieve the purpose of temperature control and dehumidification.
Therefore, the second purpose of the invention is to provide an air conditioner.
Therefore, a third objective of the present invention is to provide a control method of an air conditioner.
Therefore, a fourth object of the present invention is to provide an air conditioner.
To this end, a fifth object of the invention is to propose a computer-readable storage medium.
To achieve the above object, an embodiment of a first aspect of the present invention discloses an air conditioning control system, including: the outdoor heat exchanger comprises a controller, a compressor, a four-way valve component, an outdoor heat exchanger, an outdoor fan, an outdoor electronic expansion valve, first to third indoor electronic expansion valves, first and second indoor heat exchangers and first and second indoor fans, wherein the output end of the compressor is connected with one end of the outdoor heat exchanger through the four-way valve component, the other end of the outdoor heat exchanger is respectively connected with one end of the first indoor electronic expansion valve and one end of the second indoor electronic expansion valve through the outdoor electronic expansion valve, and the outdoor fan is arranged opposite to the outdoor heat exchanger; the other end of the first indoor electronic expansion valve is connected with one end of the first indoor heat exchanger; the other end of the second indoor electronic expansion valve is connected with one end of the second indoor heat exchanger; the other end of the second indoor heat exchanger is connected with the other end of the first indoor heat exchanger through a third indoor electronic expansion valve, the first indoor fan is arranged relative to the first indoor heat exchanger, and the second fan is arranged relative to the second indoor heat exchanger; and the controller is used for controlling one or more of the outdoor electronic expansion valve, the first to third indoor electronic expansion valves and the first and second indoor fans according to the running mode of the air conditioner so as to carry out throttling control on the air conditioner.
According to the air conditioner control system provided by the embodiment of the invention, a double-fan double-heat exchanger mode is adopted, different throttling control is carried out on two sections of heat exchangers of an indoor unit by controlling the opening degree of one or more electronic expansion valves, so that the temperatures of the two sections of heat exchangers are different, one section of heat exchanger is positioned in a low-temperature area, the other section of heat exchanger is positioned in a high-temperature area, the two sections of heat exchangers are divided into different temperature areas, and the temperature change of a mixed air field is reasonably controlled through the temperature difference generated by the air fields of the two sections of heat exchangers, so that the purposes of temperature control (temperature rise, temperature reduction and constant temperature) and dehumidification are achieved.
In addition, the air conditioning control system according to the above embodiment of the present invention may further have the following additional technical features:
in some examples, further comprising: the gas-liquid separator, the electromagnetic valve and the refrigerant heat dissipation module; the first end of the gas-liquid separator is connected with the other end of the first indoor heat exchanger, and is also connected with the second indoor heat exchanger through the third indoor electronic expansion valve; the second end of the gas-liquid separator is connected with the output end of the compressor through the four-way valve assembly; the third end of the gas-liquid separator is connected with the input end of the compressor sequentially through the electromagnetic valve and the refrigerant heat dissipation module, and the electromagnetic valve is used for controlling the opening or closing of the refrigerant heat dissipation module.
In some examples, when the air conditioner is in a cooling mode, the controller is to: and controlling the outdoor electronic expansion valve and the third indoor electronic expansion valve to be opened at the maximum opening degree, adjusting the opening degrees of the first indoor electronic expansion valve and the second indoor electronic expansion valve to enable the opening degrees of the first indoor electronic expansion valve and the second indoor electronic expansion valve to be different, and controlling the first indoor fan and the second indoor fan to respectively supply air at preset gears so as to realize throttling control.
In some examples, when the air conditioner is in a cooling mode, the controller is further configured to: and controlling the electromagnetic valve to be opened so that the liquid refrigerant obtained by the separation of the gas-liquid separator is gasified by the refrigerant heat dissipation module and flows into the compressor through the input end of the compressor.
In some examples, when the air conditioner is in a heating mode, the controller is to: and controlling the first to third indoor electronic expansion valves to be opened at the maximum opening degree, controlling the opening degree of the outdoor electronic expansion valve, and controlling the first indoor fan and the second indoor fan to respectively supply air at preset gears so as to realize the throttling control.
In some examples, when the air conditioner is in a heating mode, the controller is further configured to: and controlling the electromagnetic valve to be closed.
In some examples, when the air conditioner is in a dehumidification mode, the controller is to: and controlling the outdoor electronic expansion valve to be opened at the maximum opening degree, controlling the electromagnetic valve to be opened, and adjusting the opening degree of the first indoor heat exchanger to reduce the temperature of the first indoor heat exchanger to be lower than the dew point temperature, wherein the dew point temperature is obtained by calculation according to the indoor temperature and humidity.
In some examples, when the air conditioner is in a dehumidification mode, the controller is further to: and controlling the first indoor fan to supply air through a set low wind shield.
In order to achieve the above object, an embodiment of a second aspect of the present invention discloses an air conditioner, which includes the air conditioning control system according to the embodiment of the first aspect of the present invention.
According to the air conditioner provided by the embodiment of the invention, a double-fan double-heat exchanger form is adopted, different throttling controls are carried out on two sections of heat exchangers of the indoor unit by controlling the opening degree of one or more electronic expansion valves, so that the temperatures of the two sections of heat exchangers are different, one section of heat exchanger is in a low-temperature region, the other section of heat exchanger is in a high-temperature region, the two sections of heat exchangers are divided into different temperature regions, and the temperature change of a mixed air field is reasonably controlled by the temperature difference generated by the air fields of the two sections of heat exchangers, so that the purposes of temperature control (temperature rise, temperature reduction and constant temperature) and dehumidification are achieved.
In order to achieve the above object, a third embodiment of the present invention discloses a control method of an air conditioner, comprising the steps of: determining an operation mode of the air conditioner; and controlling one or more of an outdoor electronic expansion valve of the air conditioner, the first to third indoor electronic expansion valves and the first and second indoor fans according to the operation mode so as to perform throttling control on the air conditioner.
According to the control method of the air conditioner provided by the embodiment of the invention, the air conditioner adopts a double-fan double-heat exchanger form, different throttling controls are carried out on two sections of heat exchangers of the indoor unit by controlling the opening degree of one or more electronic expansion valves, so that the temperatures of the two sections of heat exchangers are different, one section of heat exchanger is in a low-temperature area, the other section of heat exchanger is in a high-temperature area, the two sections of heat exchangers are divided into different temperature areas, and the temperature change of a mixed wind field is reasonably controlled through the temperature difference generated by the wind fields of the two sections of heat exchangers, so that the purposes of temperature control (temperature rise, temperature reduction and constant temperature) and dehumidification are achieved.
In order to achieve the above object, a fourth aspect of the present invention discloses an air conditioner, comprising: the air conditioner control system comprises a processor, a memory and a control program of the air conditioner, wherein the control program of the air conditioner is stored on the memory and can run on the processor, and when the control program of the air conditioner is executed by the processor, the control method of the air conditioner is realized.
According to the air conditioner provided by the embodiment of the invention, a double-fan double-heat exchanger form is adopted, different throttling controls are carried out on two sections of heat exchangers of an indoor unit by controlling the opening degree of one or more electronic expansion valves, so that the temperatures of the two sections of heat exchangers are different, one section of heat exchanger is in a low-temperature region, the other section of heat exchanger is in a high-temperature region, the two sections of heat exchangers are divided into different temperature regions, and the temperature change of a mixed air field is reasonably controlled through the temperature difference generated by the air fields of the two sections of heat exchangers, so that the purposes of temperature control (temperature rise, temperature reduction and constant temperature) and dehumidification are achieved.
To achieve the above object, a fifth embodiment of the present invention discloses a computer-readable storage medium having a control program of an air conditioner stored thereon, where the control program of the air conditioner, when executed by a processor, implements a control method of the air conditioner according to the above embodiments of the present invention.
According to the computer readable storage medium of the embodiment of the invention, when the control program of the air conditioner stored on the computer readable storage medium is executed by the processor, the opening of one or more electronic expansion valves is controlled, different throttling controls are carried out on two sections of heat exchangers of the indoor unit, so that the temperatures of the two sections of heat exchangers are different, one section of heat exchanger is in a low-temperature area, the other section of heat exchanger is in a high-temperature area, the two sections of heat exchangers are divided into different temperature areas, and the temperature change of a mixed air field is reasonably controlled through the temperature difference generated by the air fields of the two sections of heat exchangers, so that the purposes of temperature control (temperature rise, temperature reduction and constant temperature) and dehumidification are achieved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of an air conditioning control system according to an embodiment of the present invention;
fig. 2 is a schematic view showing a heat exchanger distribution form of an indoor unit according to an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating refrigerant flow in a cooling mode of the gas-liquid splitter according to an embodiment of the present invention;
FIG. 4 is a schematic flow chart of an air conditioning control system according to an embodiment of the present invention;
fig. 5 is a flowchart of a control method of an air conditioner according to an embodiment of the present invention.
Description of the reference numerals:
1-a compressor; a 2-four-way valve assembly; 3-an outdoor heat exchanger; 4-outdoor fan; 5-outdoor electronic expansion valve; 6-first indoor electronic expansion valve; 7-a second indoor electronic expansion valve; 8-a first indoor heat exchanger; 9-a second indoor heat exchanger; 10-a first indoor fan; 11-a second indoor fan; 12-a third indoor electronic expansion valve; 13-a gas-liquid separator; 14-solenoid valve.
Detailed Description
Embodiments of the present invention will be described in detail below, the embodiments described with reference to the drawings being illustrative, and the embodiments of the present invention will be described in detail below.
An air conditioner control system, an air conditioner, and a control method of the air conditioner according to embodiments of the present invention are described below with reference to fig. 1 to 5.
Fig. 1 is a schematic structural diagram of an air conditioning control system according to an embodiment of the present invention.
As shown in fig. 1, the air conditioning control system includes: a controller (not shown in the figure), a compressor 1, a four-way valve assembly 2, an outdoor heat exchanger 3, an outdoor fan 4, an outdoor electronic expansion valve 5, a first indoor electronic expansion valve 6, a second indoor electronic expansion valve 7, a third indoor electronic expansion valve 12, a first indoor heat exchanger 8, a second indoor heat exchanger 9, a first indoor fan 10 and a second indoor fan 11.
That is, the air conditioning control system according to the embodiment of the present invention relates to a novel air conditioner structure, which is in the form of a dual-fan and dual-heat exchanger, and as shown in fig. 1 and 2, includes a first indoor heat exchanger 8 and a second indoor heat exchanger 9, and a first indoor fan 10 and a second indoor fan 11. The two sections of heat exchangers are subjected to different throttling controls, so that the temperatures of the two sections of heat exchangers are different, one section of heat exchanger is in a low-temperature area, the other section of heat exchanger is in a high-temperature area, and a temperature difference is generated through the wind fields of the two sections of heat exchangers, so that the dehumidification capacity and the air outlet temperature are reasonably controlled, and the purposes of temperature control and dehumidification are achieved.
Specifically, as shown in fig. 1, an output end of a compressor 1 is connected to one end of an outdoor heat exchanger 3 through a four-way valve assembly 2, the other end of the outdoor heat exchanger 3 is connected to one end of a first indoor electronic expansion valve 6 and one end of a second indoor electronic expansion valve 7 through an outdoor electronic expansion valve 5, and an outdoor fan 4 is disposed opposite to the outdoor heat exchanger 3.
The other end of the first indoor electronic expansion valve 6 is connected to one end of a first indoor heat exchanger 8.
The other end of the second indoor electronic expansion valve 7 is connected to one end of a second indoor heat exchanger 9.
The other end of the second indoor heat exchanger 9 is connected to the other end of the first indoor heat exchanger 8 through a third indoor electronic expansion valve 12, a first indoor fan 10 is provided for the first indoor heat exchanger 8, and a second indoor fan 11 is provided for the second indoor heat exchanger 9.
The controller is used for controlling one or more of the outdoor electronic expansion valve 5, the first to third indoor electronic expansion valves and the first and second indoor fans according to the operation mode of the air conditioner so as to perform throttling control on the air conditioner.
That is, the first indoor heat exchanger 8 and the second indoor heat exchanger 9 adopt a parallel control mode, refrigerant is discharged from the compressor 1, passes through the outdoor heat exchanger 3 and the outdoor electronic expansion valve 5, and is divided into two paths which respectively and correspondingly enter the first indoor heat exchanger 8 and the second indoor heat exchanger 9, the two sections of indoor heat exchangers (namely, the first indoor heat exchanger 8 and the second indoor heat exchanger 9) are arranged in parallel and respectively and correspondingly controlled by the first indoor electronic expansion valve 6 and the second indoor electronic expansion valve 7, and air is fed into two sides of the double-fan structure (namely, the first indoor fan 10 and the second indoor fan 11) and is discharged after being mixed, for example, as shown in fig. 2.
Therefore, the air conditioner control system adopts a double-fan double-heat exchanger form, different throttling controls are carried out on two sections of heat exchangers of the indoor unit by controlling the opening degree of one or more electronic expansion valves, the temperatures of the two sections of heat exchangers are different, one section of heat exchanger is in a low-temperature area, the other section of heat exchanger is in a high-temperature area, the two sections of heat exchangers are divided into different temperature areas, and the temperature change of a mixed air field is reasonably controlled through the temperature difference generated by the air fields of the two sections of heat exchangers, so that the purposes of temperature control (temperature rise, temperature reduction and constant temperature) and dehumidification are achieved.
In one embodiment of the present invention, the air conditioning control system further includes: a gas-liquid separator 13, an electromagnetic valve 14 and a refrigerant heat dissipation module (not shown).
Wherein, the first end of the gas-liquid separator 13 is connected with the other end of the first indoor heat exchanger 8, and the first end of the gas-liquid separator 13 is also connected with the second indoor heat exchanger 9 through a third indoor electronic expansion valve 12; the second end of the gas-liquid separator 13 is connected with the output end of the compressor 1 through the four-way valve component 2; the third end of the gas-liquid separator 13 is connected with the input end of the compressor 1 sequentially through the electromagnetic valve 14 and the refrigerant heat dissipation module, and the electromagnetic valve 14 is used for controlling the opening or closing of the refrigerant heat dissipation module.
In one embodiment of the present invention, when the air conditioner is in the cooling mode, the controller is configured to: the outdoor electronic expansion valve 5 and the third indoor electronic expansion valve 12 are controlled to be opened at maximum opening degrees, the opening degrees of the first indoor electronic expansion valve 6 and the second indoor electronic expansion valve 7 are adjusted, the opening degrees of the first indoor electronic expansion valve 6 and the second indoor electronic expansion valve 7 are made to be different, and the first indoor fan 10 and the second indoor fan 11 are controlled to respectively supply air at preset gears, so that throttling control is realized.
Specifically, as shown in fig. 4, when the air conditioner is in the cooling mode, the outdoor electronic expansion valve 5 and the third indoor electronic expansion valve 12 are controlled to be fully opened, that is, the outdoor electronic expansion valve 5 and the third indoor electronic expansion valve 12 are controlled to be fully opened at the maximum opening degree, at this time, throttling is not performed, the opening degrees of the first indoor electronic expansion valve 6 and the second indoor electronic expansion valve 7 are adjusted, and throttling control is performed by the first indoor electronic expansion valve 6 and the second indoor electronic expansion valve 7, so that the two-stage heat exchanger has different expansion valve opening degrees, that is, the opening degrees of the first indoor electronic expansion valve 6 and the second indoor electronic expansion valve 7 are different, thereby accurately controlling the outlet air temperature and improving energy efficiency. Meanwhile, the first indoor fan 10 and the second indoor fan 11 are controlled to supply air at preset gears, specifically, for example, the first indoor fan 10 and the second indoor fan 11 are controlled to supply air at three-gear rotation speed. Therefore, the dual-fan structure (i.e., the first indoor fan 10 and the second indoor fan 11) enables a user to control the six-gear rotating speed, so that the control of the air volume temperature is more accurate.
In one embodiment of the present invention, when the air conditioner is in the cooling mode, the controller is further configured to: the electromagnetic valve 14 is controlled to be opened, so that the liquid refrigerant separated by the gas-liquid separator 13 is gasified by the refrigerant heat dissipation module and then flows into the compressor 1 through the input end of the compressor 1.
Specifically, as shown in fig. 3, the refrigerant flow of the gas-liquid separator 13 in the cooling mode functions to split the gas-liquid refrigerant. Specifically, after the refrigerant enters the gas-liquid separator 13, the gas-liquid separator 13 performs gas-liquid separation on the refrigerant, and further outputs the gaseous refrigerant through one output end of the gas-liquid separator 13, so that the gaseous refrigerant enters the liquid reservoir of the compressor 1; the other output end of the gas-liquid separator 13 outputs a low-temperature and low-pressure liquid refrigerant, the liquid refrigerant passes through the refrigerant heat dissipation module and then enters the liquid reservoir of the compressor 1, and at this time, the electromagnetic valve 14 is in a communication state.
In one embodiment of the present invention, when the air conditioner is in the heating mode, the controller is configured to: and controlling the first to third indoor electronic expansion valves to be opened at the maximum opening degree, controlling the opening degree of the outdoor electronic expansion valve 5, and controlling the first indoor fan 10 and the second indoor fan 11 to supply air at preset gears respectively so as to perform accurate air supply of double fans, thereby realizing throttling control.
In one embodiment of the present invention, when the air conditioner is in the heating mode, the controller is further configured to: the control solenoid 14 is closed.
Specifically, when the air conditioner is in the heating mode, the three indoor electronic expansion valves are controlled to be fully opened, that is, the first to third indoor electronic expansion valves 12 are all controlled to be opened at the maximum opening degree, at this time, throttling is not performed, throttling is adjusted through the outdoor electronic expansion valve 5, and accurate double-fan air control is achieved by controlling the first indoor fan 10 and the second indoor fan 11. Further, the solenoid valve 14 is controlled to be closed, so that the refrigerant heat dissipation module does not operate.
In one embodiment of the present invention, when the air conditioner is in the dehumidification mode, the controller is configured to: and controlling the outdoor electronic expansion valve 5 to be opened at the maximum opening degree, controlling the electromagnetic valve 14 to be opened, and adjusting the opening degree of the first indoor heat exchanger 8 to reduce the temperature of the first indoor heat exchanger 8 to be lower than the dew point temperature, wherein the dew point temperature is calculated according to the indoor temperature and humidity.
In one embodiment of the present invention, when the air conditioner is in the dehumidification mode, the controller is further configured to: the first indoor fan 10 is controlled to supply air at a set low damper.
Specifically, when the air conditioner is operated in the dehumidification mode, three operation modes can be adopted: cooling dehumidification, constant temperature dehumidification and heating dehumidification. Specifically, as shown in fig. 4, which dehumidification mode is to be entered can be determined according to the indoor environment temperature and the user setting temperature Ts, the setting temperature Ts is lower than the indoor environment temperature to perform cooling dehumidification, the setting temperature Ts is equal to the indoor environment temperature to perform constant temperature dehumidification, and the setting temperature Ts is higher than the indoor environment temperature to perform heating dehumidification. In the dehumidification mode, the air conditioner performs cooling, the outdoor electronic expansion valve 5 is controlled to be opened at the maximum opening degree, that is, the outdoor electronic expansion valve 5 is controlled to be fully opened, and throttling is performed by the first to third indoor electronic expansion valves. Indoor dew point temperature is calculated according to indoor humiture sensed by the environment humiture sensor, then the first indoor electronic expansion valve 6 is adjusted to a smaller opening degree, so that the temperature of the first indoor heat exchanger 8 is lower than the dew point temperature, and indoor water vapor is condensed on the first indoor heat exchanger 8 to dehumidify. Meanwhile, the second indoor electronic expansion valve 7 is controlled to adopt a certain opening degree (or fully opened), the overall outlet air temperature is controlled by controlling the opening degree of the second indoor electronic expansion valve 7, and the opening degree of the third indoor electronic expansion valve 12 is adjusted according to the dehumidification set temperature. In addition, the first indoor fan 10 can be set to be low wind in the dehumidification process, so that the evaporation temperature of the first indoor heat exchanger 8 can be lower, the dehumidification effect can be improved, the dehumidification capacity can be increased, and the humidity can be accurately controlled by controlling the combined action of the first indoor fan 10 and the first indoor electronic expansion valve 6; the second indoor fan 11 is operated according to a user-set windshield.
If the set temperature Ts set by the user in the dehumidification mode is lower than the indoor ambient temperature, the temperature is reduced and dehumidification is performed, the opening degree of the indoor second indoor electronic expansion valve 7 needs to be reduced to increase the throttling, the rotating speed of the outdoor fan 4 is increased to reduce the temperature of the second indoor heat exchanger 9, and meanwhile, the third indoor electronic expansion valve 12 is controlled to be fully opened. If the set temperature Ts set by the user in the dehumidification mode is higher than or equal to the indoor ambient temperature (or equal to the indoor temperature), temperature rise dehumidification (or constant temperature dehumidification) is performed, at this time, it is necessary to control the second indoor electronic expansion valve 7 to be fully opened, and reduce the rotation speed of the outdoor fan 4, so that the second indoor heat exchanger 9 is used as a condenser, the temperature rises, thereby controlling the outlet air temperature to be higher than the indoor ambient temperature (or equal to the indoor ambient temperature), and adjust the opening degree of the third indoor electronic expansion valve 12, so that the pressure of the refrigerant flowing out of the second indoor heat exchanger 9 is reduced, and is balanced with the pressure of the refrigerant flowing out of the first indoor heat exchanger 8, thereby generating no pressure difference. Meanwhile, the second indoor fan 11 is controlled to operate at a low damper according to the user setting.
Therefore, the embodiment of the invention can realize the effects of intelligent temperature control dehumidification and accurate dehumidification through the structures of the double-chamber inner fans and the parallel heat exchangers.
In summary, according to the air conditioner control system of the embodiment of the present invention, a form of dual fans and dual heat exchangers is adopted, different throttle controls are performed on two sections of heat exchangers of an indoor unit by controlling the opening degree of one or more electronic expansion valves, so that the temperatures of the two sections of heat exchangers are different, one section of heat exchanger is in a low temperature region, the other section of heat exchanger is in a high temperature region, thus the two sections of heat exchangers are divided into different temperature regions, and the temperature change of a mixed wind field is reasonably controlled by the temperature difference generated by the wind fields of the two sections of heat exchangers, so as to achieve the purpose of temperature control (temperature rise, temperature reduction and constant temperature) dehumidification.
A further embodiment of the present invention provides an air conditioner including the air conditioning control system described in any of the above embodiments of the present invention.
It should be noted that, when performing dehumidification control, a specific implementation manner of the air conditioner is similar to a specific implementation manner of the air conditioner control system according to any one of the above embodiments of the present invention, and thus for detailed exemplary description of the air conditioner, reference may be made to the related description part of the air conditioner control system, and repeated description is omitted here for reducing redundancy.
According to the air conditioner provided by the embodiment of the invention, a double-fan double-heat exchanger form is adopted, different throttling controls are carried out on two sections of heat exchangers of the indoor unit by controlling the opening degree of one or more electronic expansion valves, so that the temperatures of the two sections of heat exchangers are different, one section of heat exchanger is in a low-temperature region, the other section of heat exchanger is in a high-temperature region, the two sections of heat exchangers are divided into different temperature regions, and the temperature change of a mixed air field is reasonably controlled by the temperature difference generated by the air fields of the two sections of heat exchangers, so that the purposes of temperature control (temperature rise, temperature reduction and constant temperature) and dehumidification are achieved.
A further embodiment of the present invention provides a method for controlling an air conditioner, where the air conditioner is, for example, the air conditioner described in any of the above embodiments of the present invention, that is, the air conditioner includes the air conditioner control system described in any of the above embodiments of the present invention, and for the detailed description of the air conditioner or the air conditioner control system, please refer to the description part of the air conditioner or the air conditioner control system in the foregoing, and the description is not repeated here to reduce redundancy.
Fig. 5 is a flowchart of a control method of an air conditioner according to an embodiment of the present invention. As shown in fig. 5, the control method of the air conditioner includes the steps of:
step S1: an operation mode of the air conditioner is determined.
Step S2: one or more of an outdoor electronic expansion valve, first to third indoor electronic expansion valves, and first and second indoor fans of the air conditioner are controlled according to an operation mode to throttle-control the air conditioner.
In one embodiment of the present invention, controlling one or more of an outdoor electronic expansion valve, first to third indoor electronic expansion valves, and first and second indoor fans of an air conditioner to throttle the air conditioner according to an operation mode includes: when the air conditioner is in a cooling mode, the outdoor electronic expansion valve and the third indoor electronic expansion valve are controlled to be opened at the maximum opening degree, the opening degrees of the first indoor electronic expansion valve and the second indoor electronic expansion valve are adjusted, the opening degrees of the first indoor electronic expansion valve and the second indoor electronic expansion valve are different, and the first indoor fan and the second indoor fan are controlled to respectively supply air at preset gears, so that throttling control is achieved.
In an embodiment of the invention, when the air conditioner is in the refrigeration mode, the electromagnetic valve is also controlled to be opened, so that the liquid refrigerant obtained by the separation of the gas-liquid separator is gasified by the refrigerant heat dissipation module and flows into the compressor through the input end of the compressor.
In one embodiment of the present invention, controlling one or more of an outdoor electronic expansion valve, first to third indoor electronic expansion valves, and first and second indoor fans of an air conditioner to throttle the air conditioner according to an operation mode further comprises: when the air conditioner is in a heating mode, the first indoor electronic expansion valve, the second indoor electronic expansion valve and the third indoor electronic expansion valve are controlled to be opened at the maximum opening degree, the opening degree of the outdoor electronic expansion valve is controlled, and the first indoor fan and the second indoor fan are controlled to supply air at preset gears respectively so as to realize throttling control.
Further, when the air conditioner is in a heating mode, the electromagnetic valve is also controlled to be closed.
In one embodiment of the present invention, controlling one or more of an outdoor electronic expansion valve, first to third indoor electronic expansion valves, and first and second indoor fans of an air conditioner to throttle the air conditioner according to an operation mode further comprises: when the air conditioner is in a dehumidification mode, the outdoor electronic expansion valve is controlled to be opened at the maximum opening degree, the electromagnetic valve is controlled to be opened, and the opening degree of the first indoor heat exchanger is adjusted to enable the temperature of the first indoor heat exchanger to be reduced to be lower than dew point temperature, wherein the dew point temperature is obtained through calculation according to indoor temperature and humidity.
Further, when the air conditioner is in a dehumidification mode, the first indoor fan is controlled to supply air through a set low windshield.
It should be noted that, when performing dehumidification, a specific implementation manner of the control method of the air conditioner is similar to a specific implementation manner of the air conditioner control system according to any one of the above embodiments of the present invention, and thus, for detailed exemplary description of the control method of the air conditioner, reference may be made to the related description part of the air conditioner control system, and repeated description is omitted here to reduce redundancy.
According to the control method of the air conditioner provided by the embodiment of the invention, the air conditioner adopts a double-fan double-heat exchanger mode, different throttling controls are carried out on two sections of heat exchangers of the indoor unit by controlling the opening degree of one or more electronic expansion valves, so that the temperatures of the two sections of heat exchangers are different, one section of heat exchanger is in a low-temperature area, the other section of heat exchanger is in a high-temperature area, the two sections of heat exchangers are divided into different temperature areas, and the temperature change of a mixed wind field is reasonably controlled through the temperature difference generated by the wind fields of the two sections of heat exchangers, so that the purposes of temperature control (temperature rise, temperature reduction and constant temperature) and dehumidification are achieved.
A further embodiment of the present invention provides an air conditioner including: the air conditioner control system comprises a processor, a memory and a control program of the air conditioner, wherein the control program of the air conditioner is stored on the memory and can run on the processor, and when the control program of the air conditioner is executed by the processor, the control method of the air conditioner according to any one of the above embodiments of the invention is realized.
According to the air conditioner provided by the embodiment of the invention, a double-fan double-heat exchanger form is adopted, different throttling controls are carried out on two sections of heat exchangers of an indoor unit by controlling the opening degree of one or more electronic expansion valves, so that the temperatures of the two sections of heat exchangers are different, one section of heat exchanger is in a low-temperature region, the other section of heat exchanger is in a high-temperature region, the two sections of heat exchangers are divided into different temperature regions, and the temperature change of a mixed air field is reasonably controlled through the temperature difference generated by the air fields of the two sections of heat exchangers, so that the purposes of temperature control (temperature rise, temperature reduction and constant temperature) and dehumidification are achieved.
A further embodiment of the present invention also discloses a computer-readable storage medium having a control program of an air conditioner stored thereon, which, when executed by a processor, implements the control method of the air conditioner according to the above-described embodiment of the present invention.
According to the computer readable storage medium of the embodiment of the invention, when the control program of the air conditioner stored on the computer readable storage medium is executed by the processor, the opening of one or more electronic expansion valves is controlled, different throttling controls are carried out on two sections of heat exchangers of the indoor unit, so that the temperatures of the two sections of heat exchangers are different, one section of heat exchanger is in a low-temperature area, the other section of heat exchanger is in a high-temperature area, the two sections of heat exchangers are divided into different temperature areas, and the temperature change of a mixed air field is reasonably controlled through the temperature difference generated by the air fields of the two sections of heat exchangers, so that the purposes of temperature control (temperature rise, temperature reduction and constant temperature) and dehumidification are achieved.
In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (12)
1. An air conditioning control system, comprising: a controller, a compressor, a four-way valve assembly, an outdoor heat exchanger, an outdoor fan, an outdoor electronic expansion valve, first to third indoor electronic expansion valves, first and second indoor heat exchangers, and first and second indoor fans,
the output end of the compressor is connected with one end of the outdoor heat exchanger through a four-way valve assembly, the other end of the outdoor heat exchanger is respectively connected with one end of a first indoor electronic expansion valve and one end of a second indoor electronic expansion valve through the outdoor electronic expansion valve, and an outdoor fan is arranged relative to the outdoor heat exchanger;
the other end of the first indoor electronic expansion valve is connected with one end of the first indoor heat exchanger;
the other end of the second indoor electronic expansion valve is connected with one end of a second indoor heat exchanger;
the other end of the second indoor heat exchanger is connected with the other end of the first indoor heat exchanger through a third indoor electronic expansion valve, the first indoor fan is arranged relative to the first indoor heat exchanger, and the second indoor fan is arranged relative to the second indoor heat exchanger;
the controller is configured to control one or more of the outdoor electronic expansion valve, the first to third indoor electronic expansion valves, and the first and second indoor fans according to an operation mode of the air conditioner, so as to perform throttling control on the air conditioner.
2. The air conditioning control system according to claim 1, characterized by further comprising: the gas-liquid separator, the electromagnetic valve and the refrigerant heat dissipation module;
the first end of the gas-liquid separator is connected with the other end of the first indoor heat exchanger, and is also connected with the second indoor heat exchanger through the third indoor electronic expansion valve;
the second end of the gas-liquid separator is connected with the output end of the compressor through the four-way valve assembly;
the third end of the gas-liquid separator is connected with the input end of the compressor sequentially through the electromagnetic valve and the refrigerant heat dissipation module, and the electromagnetic valve is used for controlling the refrigerant heat dissipation module to be opened or closed.
3. The climate control system of claim 2, wherein the controller is configured to, when the air conditioner is in a cooling mode: and controlling the outdoor electronic expansion valve and the third indoor electronic expansion valve to be opened at the maximum opening degree, adjusting the opening degrees of the first indoor electronic expansion valve and the second indoor electronic expansion valve, enabling the opening degrees of the first indoor electronic expansion valve and the second indoor electronic expansion valve to be different, and controlling the first indoor fan and the second indoor fan to respectively supply air at preset gears so as to realize throttling control.
4. The climate control system of claim 3, wherein the controller is further configured to, when the air conditioner is in a cooling mode: and controlling the electromagnetic valve to be opened so that the liquid refrigerant obtained by the separation of the gas-liquid separator is gasified by the refrigerant heat dissipation module and flows into the compressor through the input end of the compressor.
5. The air conditioning control system of claim 4, wherein when the air conditioner is in a heating mode, the controller is configured to: and controlling the first to third indoor electronic expansion valves to be opened at the maximum opening degree, controlling the opening degree of the outdoor electronic expansion valve, and controlling the first indoor fan and the second indoor fan to respectively supply air at preset gears so as to realize the throttling control.
6. The air conditioning control system of claim 5, wherein when the air conditioner is in a heating mode, the controller is further configured to: and controlling the electromagnetic valve to be closed.
7. The climate control system of claim 2, wherein the controller is configured to, when the air conditioner is in the dehumidification mode: controlling the outdoor electronic expansion valve to be opened at the maximum opening degree, controlling the electromagnetic valve to be opened, and adjusting the opening degree of the first indoor heat exchanger to reduce the temperature of the first indoor heat exchanger to be lower than the dew point temperature, wherein the dew point temperature is obtained by calculation according to the indoor temperature and humidity;
when the indoor temperature is higher than or equal to the set temperature in the dehumidification mode, controlling a third indoor electronic expansion valve to be opened at the maximum opening degree, reducing the opening degree of a second indoor electronic expansion valve and increasing the rotating speed of an outdoor fan;
and when the indoor temperature is lower than the set temperature in the dehumidification mode, controlling the second indoor electronic expansion valve to be opened at the maximum opening degree, and controlling the opening degree of the third indoor electronic expansion valve to reduce the refrigerant pressure of the second indoor heat exchanger, so that the refrigerant pressure of the second indoor heat exchanger is balanced with the refrigerant pressure of the first indoor heat exchanger, and the rotating speed of the outdoor fan is reduced.
8. The climate control system of claim 7, wherein when the air conditioner is in a dehumidification mode, the controller is further configured to: and controlling the first indoor fan to supply air through a set low wind shield.
9. An air conditioner characterized by comprising the air conditioning control system according to any one of claims 1 to 8.
10. A control method of an air conditioner according to claim 9, characterized by comprising the steps of:
determining an operation mode of the air conditioner;
and controlling one or more of an outdoor electronic expansion valve of the air conditioner, the first to third indoor electronic expansion valves and the first and second indoor fans according to the operation mode so as to perform throttling control on the air conditioner.
11. An air conditioner, comprising: a processor, a memory, and a control program of an air conditioner stored on the memory and executable on the processor, the control program of the air conditioner implementing the control method of the air conditioner as claimed in claim 10 when executed by the processor.
12. A computer-readable storage medium, characterized in that a control program of an air conditioner is stored thereon, which when executed by a processor, implements the control method of the air conditioner as set forth in claim 10.
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| CN108518736A (en) * | 2018-04-04 | 2018-09-11 | 珠海格力电器股份有限公司 | Constant-temperature and constant-humidity inner machine, constant-temperature and constant-humidity system and control method thereof |
| US10969145B2 (en) * | 2018-04-09 | 2021-04-06 | Lennox Industries Inc. | Method and apparatus for hybrid dehumidification |
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| CN111503832B (en) * | 2020-04-15 | 2021-08-13 | 海信（山东）空调有限公司 | Method for controlling self-cleaning drying of air conditioner, air conditioner indoor unit and storage medium |
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