CN114061114A - Air conditioner, control method thereof and readable storage medium - Google Patents

Air conditioner, control method thereof and readable storage medium Download PDF

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Publication number
CN114061114A
CN114061114A CN202010770942.3A CN202010770942A CN114061114A CN 114061114 A CN114061114 A CN 114061114A CN 202010770942 A CN202010770942 A CN 202010770942A CN 114061114 A CN114061114 A CN 114061114A
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CN
China
Prior art keywords
indoor
air conditioner
indoor fan
temperature
difference value
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Pending
Application number
CN202010770942.3A
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Chinese (zh)
Inventor
黄汝普
马阅新
邵艳坡
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GD Midea Air Conditioning Equipment Co Ltd
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GD Midea Air Conditioning Equipment Co Ltd
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Priority to CN202010770942.3A priority Critical patent/CN114061114A/en
Publication of CN114061114A publication Critical patent/CN114061114A/en
Pending legal-status Critical Current

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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
    • F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0083—Indoor units, e.g. fan coil units with dehumidification means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • 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

Abstract

The invention discloses an air conditioner and a control method thereof and a readable storage medium, wherein the control method comprises the following steps: after the air conditioner enters a constant temperature dehumidification mode, controlling the air conditioner to operate a refrigeration mode, and increasing the opening degree of an outdoor electronic expansion valve in an outdoor unit; the indoor temperature of the environment where the air conditioner is located is obtained regularly; acquiring a difference value between the indoor temperature and a target temperature; and adjusting the rotating speeds of the first indoor fan and the second indoor fan according to the difference value so as to enable the difference value between the indoor temperature and the target temperature to be within a preset range. The invention can solve the problem that the temperature of the indoor air is greatly changed in the dehumidification process of the existing air conditioner.

Description

Air conditioner, control method thereof and readable storage medium
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner, a control method of the air conditioner and a readable storage medium of the air conditioner.
Background
Currently, there are two types of dehumidification devices commonly used in the market, one is a special dehumidifier, and the other is a dehumidification mode of an air conditioner. The whole equipment of the air conditioner comprises a compressor, a condenser and an evaporator which are all arranged indoors, and indoor air is dehumidified by the evaporator and then heated by the condenser; the compressor and the condenser of the latter are arranged outdoors, only the evaporator is arranged indoors, and dehumidification is realized by starting and stopping the air conditioner. Because the whole equipment of the special dehumidifier is indoors, when the air conditioner refrigerates, most of input work of the equipment is converted into heat, and the temperature of indoor air is continuously increased in the dehumidification process; for the dehumidification mode of the air conditioner, the indoor unit only has an evaporator, the dehumidification process only has a heat absorption process, the indoor air temperature is continuously reduced, and the two dehumidification schemes can cause the indoor air temperature to be greatly changed in the dehumidification process of the air conditioner.
Disclosure of Invention
The invention mainly aims to provide an air conditioner, a control method thereof and a readable storage medium, which solve the problem that the indoor air temperature is greatly changed in the dehumidification process due to the dehumidification scheme of the existing air conditioner.
In order to achieve the above object, the present invention provides a control method of an air conditioner, the control method comprising:
after the air conditioner enters a constant temperature dehumidification mode, controlling the air conditioner to operate a refrigeration mode, and increasing the opening degree of an outdoor electronic expansion valve in an outdoor unit;
the indoor temperature of the environment where the air conditioner is located is obtained regularly;
acquiring a difference value between the indoor temperature and a target temperature; and the number of the first and second groups,
and adjusting the rotating speeds of the first indoor fan and the second indoor fan according to the difference value so as to enable the difference value between the indoor temperature and the target temperature to be within a preset range.
Optionally, the step of adjusting the rotation speeds of the first indoor fan and the second indoor fan according to the difference value so that the difference value between the indoor temperature and the target temperature is within a preset range includes:
comparing the difference value with a first boundary value and a second boundary value corresponding to the preset range, wherein the first boundary value is larger than the second boundary value;
when the difference value is larger than the first boundary value, controlling the first indoor fan to reduce the rotating speed, and controlling the second indoor fan to increase the rotating speed; and the number of the first and second groups,
and when the difference value is smaller than the second boundary value, controlling the first indoor fan to increase the rotating speed, and controlling the second indoor fan to decrease the rotating speed.
Optionally, the step of comparing the difference value with the first boundary value and the second boundary value corresponding to the preset range includes:
and when the difference value is greater than or equal to the second boundary value and less than or equal to the first boundary value, keeping the rotating speeds of the first indoor fan and the second indoor fan unchanged.
Optionally, the step of adjusting the rotation speeds of the first indoor fan and the second indoor fan according to the difference includes:
acquiring a first adjustment coefficient of the first indoor fan and a second adjustment coefficient of the second indoor fan; and the number of the first and second groups,
and adjusting the rotating speed of the first indoor fan according to the difference and the first adjusting coefficient, and adjusting the rotating speed of the second indoor fan according to the difference and the second adjusting coefficient.
Optionally, the indoor throttling component includes an electronic expansion valve, and the step of adjusting the rotation speeds of the first indoor fan and the second indoor fan according to the difference is executed while the step of:
and adjusting the opening degree of the electronic expansion valve according to the difference value.
Optionally, the target temperature is an indoor temperature when the air conditioner enters the constant temperature dehumidification mode.
Optionally, between the step of increasing the opening degree of the outdoor electronic expansion valve in the outdoor unit and the step of periodically acquiring the indoor temperature of the environment where the air conditioner is located, the method further includes the steps of:
and controlling the first indoor fan and the second indoor fan to operate at a preset rotating speed.
Optionally, after the step of adjusting the rotation speeds of the first indoor fan and the second indoor fan according to the difference value so that the difference value between the indoor temperature and the target temperature is within a preset range, the control method of the air conditioner further includes:
when the air conditioner exits the constant temperature dehumidification mode, the opening degree of the outdoor electronic expansion valve is adjusted to be the opening degree before the air conditioner enters the constant temperature dehumidification mode; and the number of the first and second groups,
and adjusting the opening degree of the indoor throttling component to be the maximum value, wherein the indoor throttling component is an electronic expansion valve.
In addition, to achieve the above object, the present invention further provides an air conditioner, which includes a memory, a processor, and a computer program stored on the memory and operable on the processor, wherein the computer program, when executed by the processor, implements the steps of the control method of the air conditioner as described above.
Further, to achieve the above object, the present invention also proposes a readable storage medium having stored thereon a computer program of an air conditioner, which when executed by a processor, implements the steps of the control method of the air conditioner as described above.
The invention provides an air conditioner and a control method thereof and a readable storage medium, wherein after the air conditioner enters a constant temperature dehumidification mode, the air conditioner is controlled to operate a refrigeration mode, the opening degree of an outdoor electronic expansion valve in an outdoor unit is increased, then the indoor temperature of the environment where the air conditioner is located is obtained at regular time, the difference between the indoor temperature and a target temperature is obtained, and finally the rotating speeds of a first indoor fan and a second indoor fan are adjusted according to the difference so that the difference between the indoor temperature and the target temperature is in a preset range. Because this scheme sets up first indoor heat exchanger and second indoor heat exchanger in the indoor set of air conditioner, first indoor heat exchanger corresponds and is provided with first indoor fan, the second indoor heat exchanger corresponds and is provided with the second indoor fan, under the constant temperature dehumidification mode, if the difference of indoor temperature and target temperature is not in predetermineeing the within range, then corresponding improvement or reduce the rotational speed of first indoor fan and second indoor fan, in order to improve or reduce the temperature of room air, realize the cold and hot balance of room air, make the change of dehumidification in-process room air temperature remain throughout predetermineeing the within range, thereby solved current dehumidification scheme and leaded to the problem that the air conditioner dehumidification in-process room air temperature takes place great change.
Drawings
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Fig. 1 is a schematic diagram of a hardware architecture of an air conditioner according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating a first embodiment of a method for controlling an air conditioner according to the present invention;
FIG. 3 is a flowchart illustrating a second embodiment of a method for controlling an air conditioner according to the present invention;
FIG. 4 is a flowchart illustrating a third embodiment of a method for controlling an air conditioner according to the present invention;
FIG. 5 is a flowchart illustrating a fourth embodiment of a method for controlling an air conditioner according to the present invention;
fig. 6 is a system diagram of the air conditioner of the present invention.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The main solution of the embodiment of the invention is as follows: after the air conditioner enters a constant temperature dehumidification mode, controlling the air conditioner to operate a refrigeration mode, and increasing the opening degree of an outdoor electronic expansion valve in an outdoor unit; the indoor temperature of the environment where the air conditioner is located is obtained regularly; acquiring a difference value between the indoor temperature and a target temperature; and adjusting the rotating speeds of the first indoor fan and the second indoor fan according to the difference value so as to enable the difference value between the indoor temperature and the target temperature to be within a preset range. This scheme is through setting up first indoor heat exchanger and second indoor heat exchanger in the indoor set of air conditioner, and first indoor heat exchanger corresponds and is provided with first indoor fan, second indoor heat exchanger corresponds and is provided with the indoor fan of second, under the constant temperature dehumidification mode, if the difference of indoor temperature and target temperature is not in predetermineeing the within range, the corresponding rotational speed that improves or reduces first indoor fan and the indoor fan of second, in order to improve or reduce the temperature of room air, the cold and hot balance of room air has been realized, make the change of dehumidification in-process room air temperature remain throughout predetermineeing the within range, thereby solved current dehumidification scheme and leaded to the problem that the air conditioner dehumidification in-process room air temperature takes place great change.
For a better understanding of the above technical solutions, exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.
As shown in fig. 1, fig. 1 is a schematic diagram of a hardware architecture of an air conditioner according to an embodiment of the present invention.
As shown in fig. 1, the air conditioner may include: a processor 1001, such as a CPU, a network interface 1004, a user interface 1003, a memory 1005, a communication bus 1002. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display (Display), an input unit such as a Keyboard (Keyboard), a remote controller, and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (such as a non-volatile memory), such as a disk memory. The memory 1005 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the configuration of the air conditioner shown in fig. 1 is not intended to be limiting and may include more or fewer components than shown, or some components in combination, or a different arrangement of components.
As shown in fig. 1, a memory 1005, which is a kind of computer storage medium, may include a computer program of an operating system and an air conditioner.
In the air conditioner shown in fig. 1, the network interface 1004 is mainly used for connecting to a backend server and performing data communication with the backend server; the user interface 1003 is mainly used for connecting a client (user side) and performing data communication with the client; and the processor 1001 may be configured to invoke the computer program stored in the memory 1005 and perform the following operations:
after the air conditioner enters a constant temperature dehumidification mode, controlling the air conditioner to operate a refrigeration mode, and increasing the opening degree of an outdoor electronic expansion valve in an outdoor unit;
the indoor temperature of the environment where the air conditioner is located is obtained regularly;
acquiring a difference value between the indoor temperature and a target temperature; and the number of the first and second groups,
and adjusting the rotating speeds of the first indoor fan and the second indoor fan according to the difference value so as to enable the difference value between the indoor temperature and the target temperature to be within a preset range.
Further, the processor 1001 may call the computer program of the air conditioner stored in the memory 1005, and also perform the following operations:
comparing the difference value with a first boundary value and a second boundary value corresponding to the preset range, wherein the first boundary value is larger than the second boundary value;
when the difference value is larger than the first boundary value, controlling the first indoor fan to reduce the rotating speed, and controlling the second indoor fan to increase the rotating speed; and the number of the first and second groups,
and when the difference value is smaller than the second boundary value, controlling the first indoor fan to increase the rotating speed, and controlling the second indoor fan to decrease the rotating speed.
Further, the processor 1001 may call the computer program of the air conditioner stored in the memory 1005, and also perform the following operations:
and when the difference value is greater than or equal to the second boundary value and less than or equal to the first boundary value, keeping the rotating speeds of the first indoor fan and the second indoor fan unchanged.
Further, the processor 1001 may call the computer program of the air conditioner stored in the memory 1005, and also perform the following operations:
acquiring a first adjustment coefficient of the first indoor fan and a second adjustment coefficient of the second indoor fan; and the number of the first and second groups,
and adjusting the rotating speed of the first indoor fan according to the difference and the first adjusting coefficient, and adjusting the rotating speed of the second indoor fan according to the difference and the second adjusting coefficient.
Further, the processor 1001 may call the computer program of the air conditioner stored in the memory 1005, and also perform the following operations:
and adjusting the opening degree of the electronic expansion valve according to the difference value.
Further, the processor 1001 may call the computer program of the air conditioner stored in the memory 1005, and also perform the following operations:
and controlling the first indoor fan and the second indoor fan to operate at a preset rotating speed.
Further, the processor 1001 may call the computer program of the air conditioner stored in the memory 1005, and also perform the following operations:
when the air conditioner exits the constant temperature dehumidification mode, the opening degree of the outdoor electronic expansion valve is adjusted to be the opening degree before the air conditioner enters the constant temperature dehumidification mode; and the number of the first and second groups,
and adjusting the opening degree of the indoor throttling component to be the maximum value, wherein the indoor throttling component is an electronic expansion valve.
Referring to fig. 2, fig. 2 is a schematic flow chart of a first embodiment of a control method of an air conditioner according to the present invention, the control method of the air conditioner includes the following steps:
step S10, after the air conditioner enters the constant temperature dehumidification mode, controlling the air conditioner to operate the refrigeration mode, and increasing the opening degree of an outdoor electronic expansion valve in the outdoor unit;
in this embodiment, referring to fig. 6, fig. 6 is a system schematic diagram of an air conditioner according to the present invention. As shown in fig. 6, the outdoor unit of the air conditioner includes a compressor 01, a four-way valve 02, an outdoor fan 03, an outdoor heat exchanger 04, and an outdoor electronic expansion valve 05; the indoor unit comprises a first indoor fan 09, a second indoor fan 10, a first indoor heat exchanger 08, a second indoor heat exchanger 07, an indoor throttling component 06, a temperature sensor 11 and an indoor air outlet swing blade 12, wherein the first indoor fan 09 is used for exchanging heat for the first indoor heat exchanger 08, the second indoor fan 10 is used for exchanging heat for the second indoor heat exchanger 07, and the first indoor fan 09 blows air at an air return opening of the indoor unit to an air outlet of the indoor unit; one end of the indoor throttling component 06 is connected with the outdoor electronic expansion valve 05 of the outdoor unit through the first indoor heat exchanger 08, the other end of the indoor throttling component 06 is connected with the four-way valve 02 of the outdoor unit through the second indoor heat exchanger 07, in the constant temperature dehumidification mode, the first indoor heat exchanger 09 is a condenser, the second indoor heat exchanger 10 is an evaporator, if the indoor temperature changes, the temperature of the indoor air is increased or decreased by correspondingly increasing or decreasing the rotating speed of the first indoor fan 09 and the rotating speed of the second indoor fan 10, and the cold-hot balance of the indoor air is kept, so that the change of the indoor temperature is within a preset range.
In this embodiment, the air conditioner is provided with a constant temperature dehumidification function, an instruction for operating a constant temperature dehumidification mode is sent to the air conditioner through the control terminal, the triggering mode of the instruction may be manual triggering or software automatic triggering, and after receiving the instruction, the air conditioner enters the constant temperature dehumidification mode to execute the dehumidification function on the indoor air, where the control terminal may be a remote controller, a mobile phone, a computer, or a control panel provided on the air conditioner.
In this embodiment, an outdoor electronic expansion valve 05 is disposed in an outdoor unit of the air conditioner, the outdoor electronic expansion valve 05 is a throttling device for adjusting the refrigerant flow rate of the air conditioner, and has the characteristics of wide adjustment range and high control precision, a superheat signal is acquired by a temperature sensor and a pressure sensor (sometimes, an evaporation temperature is acquired by a temperature sensor disposed in the middle of an evaporator) disposed at an outlet of an evaporator of an indoor unit, the opening degree of the outdoor electronic expansion valve 05 is controlled by feedback adjustment, and the refrigerant flow rate is adjusted by a change of the opening degree, generally speaking, the larger the opening degree of the outdoor electronic expansion valve 05 is, the larger the refrigerant flow rate is, the more the refrigerant enters the indoor unit is, and conversely, the smaller the opening degree of the outdoor electronic expansion valve 05 is, the smaller the refrigerant flow rate is, and the less the refrigerant enters the indoor unit.
Specifically, a constant temperature dehumidification mode is selected on the control terminal, after a confirmation key is pressed, the control terminal sends an instruction for operating a cleaning mode to the air conditioner, the air conditioner enters the constant temperature dehumidification mode after receiving the instruction, then a compressor 01 of the air conditioner is started, meanwhile, the four-way valve 02 of the air conditioner is switched to the refrigerating direction to control the air conditioner to run in the refrigerating mode, meanwhile, the opening degree of the outdoor electronic expansion valve 05 is set to be the maximum value, that is, the refrigerant flow is the largest, the outdoor electronic expansion valve 05 does not play a throttling role, it is ensured that the refrigerant completely enters the first indoor heat exchanger 08, wherein, the maximum opening range of the outdoor electronic expansion valve 05 is 480-520 degrees, the maximum opening can be 520 degrees, the four-way valve 02 is a control valve with four oil ports, different directions can be switched according to actual needs to control the flowing direction of the refrigerant of the air conditioner, so that the air conditioner runs in a refrigerating mode or a heating mode.
Before entering the cleaning mode, when the air conditioner is in the cooling mode, the rotating speeds of the first indoor fan 09 and the second indoor fan 10 can be directly adjusted; before entering the cleaning mode, when the air conditioner is in the heating mode, after the air conditioner enters the cleaning mode, the compressor 01 can be turned off firstly, and when the time length for turning off the compressor 01 reaches the preset turning-off time length, the air conditioner is switched to the cooling mode.
Further, when the air conditioner operates in the cooling mode, the first indoor fan 09 and the second indoor fan 10 are controlled to operate at a preset rotation speed, and the outdoor fan 03 is controlled to operate at a medium wind rotation speed. Wherein the rotating speed range of the first indoor fan 09 is 450-1050 rpm, and the preset rotating speed of the first indoor fan 09 can be 750 rpm; the rotation speed range of the second indoor fan 10 is 250-. It should be noted that, the rotating speed ranges of the fans of different air conditioners are different due to different structures and performances, the rotating speeds of the fans are only some optional embodiments, and in other embodiments, the rotating speeds of the fans may be set according to the structures and performances of the selected fans, which is not limited herein.
Step S20, regularly acquiring the indoor temperature of the environment where the air conditioner is located;
in this embodiment, after the air conditioner operates in the cooling mode and the opening degree of the outdoor electronic expansion valve 05 is set to the maximum opening degree, the indoor temperature of the environment where the indoor unit of the air conditioner is located is acquired at regular time, that is, the indoor temperature of the environment where the air conditioner is located is acquired every preset time period.
Specifically, a temperature sensor 11 is disposed on the indoor unit of the air conditioner, and the temperature sensor collects the indoor temperature once every preset time interval, feeds the collected indoor temperature back to the control system of the air conditioner, and displays the collected indoor temperature and a control terminal of the air conditioner, where the position of the temperature sensor 11 may be disposed on the first indoor heat exchanger 08 of the indoor unit of the air conditioner, and in other embodiments, the position of the temperature sensor 11 may be disposed according to actual needs, which is not limited herein. The preset time range is 0-60s, and can be specifically set according to actual needs, for example, the preset time range can be 6s, that is, the temperature sensor 11 collects the indoor temperature of the environment where the air conditioner is located every 6 s.
Step S30, acquiring a difference between the indoor temperature and a target temperature;
and step S40, adjusting the rotating speed of the first indoor fan and the second indoor fan according to the difference value so as to enable the difference value between the indoor temperature and the target temperature to be within a preset range.
In this embodiment, the target temperature is an indoor temperature of an environment where the air conditioner is located when the air conditioner enters the constant temperature dehumidification mode, the indoor unit of the air conditioner is provided with the first indoor fan 09 and the second indoor fan 10, the first indoor fan 09 can blow the air subjected to heat exchange by the first indoor heat exchanger 08 to the air outlet, and the second indoor fan 10 can blow the air subjected to heat exchange by the second indoor heat exchanger 07 to the air outlet. It should be noted that most of the input work of the air conditioner compressor 01 on the refrigerant is converted into heat, the heating capacity of the air conditioner is larger than the cooling capacity, the rotation speed of the first indoor fan 09 is larger than the rotation speed of the second indoor fan 10 under the condition of maintaining the temperature unchanged, the air volume blown out by the air conditioner after heat exchange by the first indoor heat exchanger 08 is larger than the air volume blown out by the air conditioner after heat exchange by the second indoor heat exchanger 07, and the air volume blown out by the air conditioner is larger than the air volume blown out by hot air because the first indoor heat exchanger 08 is a condenser and the second indoor heat exchanger 07 is an evaporator. The relative sizes of the amount of cold air and the amount of hot air blown out can be changed by changing the rotation speeds of the first indoor fan 09 and the second indoor fan 10, thereby changing the temperature of the indoor air.
In this embodiment, the air conditioner is provided with an indoor throttling component 06, the indoor throttling component 06 at least comprises an electronic expansion valve, when the air conditioner adjusts the rotation speed of the first indoor fan 09 and the second indoor fan 10 according to the difference value, the opening degree of the electronic expansion valve in the indoor throttling component 06 needs to be adjusted at the same time to control the flow rate of the refrigerant entering the second indoor heat exchanger 07 from the first indoor heat exchanger 08, if the opening degree of the electronic expansion valve in the indoor throttling component 06 is larger, the flow rate of the refrigerant flowing into the second indoor heat exchanger 07 is larger, the refrigerating capacity is larger, and the indoor temperature is lower; if the opening degree of the electronic expansion valve 06 in the indoor throttling component is small, the refrigerant may be evaporated just before entering the second indoor heat exchanger 07 or not yet entering the second indoor heat exchanger 07, the refrigerating capacity is small, and the indoor temperature is high. The flow of the refrigerant is controlled by adjusting the opening of an electronic expansion valve in the indoor throttling part 06, which is beneficial to balancing the indoor temperature.
In this embodiment, the difference between the indoor temperature and the target temperature represents the degree of deviation of the indoor temperature from the target temperature, and the difference is positive, indicating that the indoor temperature is greater than the target temperature, and the difference is negative, indicating that the indoor temperature is lower than the target temperature. The preset range is-0.5-0.5, and of course, in other embodiments, the preset range may be selected according to actual needs, and is not limited herein.
Specifically, after the indoor temperature of the environment where the air conditioner is located is obtained, the difference between the indoor temperature and the target temperature is calculated, the rotating speeds of the first indoor fan 09 and the second indoor fan 10 are adjusted according to the difference, the cold air volume and the hot air volume are adjusted to reduce or improve the indoor temperature, the difference is controlled within a preset range, and the indoor temperature is prevented from being changed too much.
In the technical scheme provided in this embodiment, after the air conditioner enters the constant temperature dehumidification mode, the air conditioner is controlled to operate in the refrigeration mode, the opening degree of an outdoor electronic expansion valve 05 in an outdoor unit is increased, then the indoor temperature of the environment where the air conditioner is located is obtained at regular time, the difference between the indoor temperature and the target temperature is obtained, and finally the rotation speeds of the first indoor fan 09 and the second indoor fan 10 are adjusted according to the difference, so that the difference between the indoor temperature and the target temperature is within the preset range. Because the first indoor heat exchanger 08 and the second indoor heat exchanger 07 are arranged in the indoor unit of the air conditioner, the first indoor heat exchanger 08 is correspondingly provided with the first indoor fan 09, the second indoor heat exchanger 07 is correspondingly provided with the second indoor fan 10, under the constant-temperature dehumidification mode, if the difference value between the indoor temperature and the target temperature is not within the preset range, the rotating speeds of the first indoor fan 09 and the second indoor fan 10 are correspondingly increased or reduced, so that the temperature of the indoor air is increased or reduced, the cold-heat balance of the indoor air is realized, the change of the indoor air temperature in the dehumidification process is always kept within the preset range, and the problem that the indoor air temperature is greatly changed in the dehumidification process of the air conditioner due to the existing dehumidification scheme is solved.
Referring to fig. 3, fig. 3 is a flowchart illustrating a second embodiment of the control method of the air conditioner according to the present invention, wherein the step of S40 includes:
step S41, comparing the difference value with a first boundary value and a second boundary value corresponding to the preset range, where the first boundary value is greater than the second boundary value;
in this embodiment, the first boundary value is an upper limit value of the preset range, and the second boundary value is a lower limit value of the preset range, in this embodiment, the first boundary value is 0.5, and the second boundary value is-0.5, but in other embodiments, the preset range is different, and the first boundary value and the second boundary value are also different.
Specifically, after the difference between the indoor temperature and the target temperature is obtained, the difference is compared with a first boundary value and a second boundary value, and whether the difference is greater than the first boundary value or smaller than the second boundary value or between the second boundary value and the first boundary value is determined.
Step S42, when the difference value is larger than the first boundary value, controlling the first indoor fan to reduce the rotating speed and controlling the second indoor fan to increase the rotating speed;
in this embodiment, when the difference between the indoor temperature and the target temperature is greater than the first boundary value, it indicates that the indoor temperature is greater than the target temperature, and the variation range of the indoor temperature is not within the preset range, and to reduce the indoor temperature so that the difference between the indoor temperature and the target temperature is within the preset range, the rotation speed of the first indoor fan 09 is reduced, the air output of the hot air blown out after heat exchange by the first indoor heat exchanger 08 is reduced, and the rotation speed of the second indoor fan 10 is increased, and the air output of the cold air blown out after heat exchange by the second indoor heat exchanger 07 is increased.
And step S43, when the difference value is smaller than the second boundary value, controlling the first indoor fan to increase the rotating speed, and controlling the second indoor fan to decrease the rotating speed.
In this embodiment, when the difference between the indoor temperature and the target temperature is smaller than the second boundary value, it indicates that the indoor temperature is smaller than the target temperature, and the variation range of the indoor temperature is not within the preset range, and in order to increase the indoor temperature so that the difference between the indoor temperature and the target temperature is within the preset range, the rotation speed of the first indoor fan 09 is increased, the air output of the hot air blown out after heat exchange by the first indoor heat exchanger 08 is increased, the rotation speed of the second indoor fan 10 is decreased, and the air output of the cold air blown out after heat exchange by the second indoor heat exchanger 07 is decreased, because the air output of the cold air is decreased, the air output of the hot air is increased, and the indoor temperature is increased until the difference between the indoor temperature and the target temperature is increased to within the preset range.
And step S44, when the difference is greater than or equal to the second boundary value and less than or equal to the first boundary value, keeping the rotation speeds of the first indoor fan and the second indoor fan unchanged.
In this embodiment, when the difference is greater than or equal to the second boundary value and less than or equal to the first boundary value, no matter whether the indoor temperature is greater than the target temperature or less than the target temperature, the variation range of the indoor temperature is within the preset range, the indoor temperature does not need to be changed, that is, the rotation speeds of the first indoor fan 09 and the second indoor fan 10 do not need to be adjusted, and the current rotation speeds of the first indoor fan 09 and the second indoor fan 10 are kept unchanged.
In the technical scheme provided by this embodiment, by comparing the difference between the indoor temperature and the target temperature with the first boundary value and the second boundary value corresponding to the preset range, when the difference is greater than the first boundary value, the first indoor fan 09 is controlled to reduce the rotation speed, and the second indoor fan 10 is controlled to increase the rotation speed; when the difference is smaller than the second boundary value, controlling the first indoor fan 09 to increase the rotating speed, and controlling the second indoor fan 10 to decrease the rotating speed; when the difference is greater than or equal to the second boundary value and less than or equal to the first boundary value, the rotation speeds of the first indoor fan 09 and the second indoor fan 10 are kept unchanged. Comparing the difference value between the indoor temperature and the target temperature with a first boundary value and a second boundary value of a preset range, judging whether the indoor temperature is higher than the target temperature or lower than the target temperature, judging whether the temperature change range is within the preset range, and if not, changing the amount of blown cold air and the amount of blown hot air by adjusting the rotating speeds of the first indoor fan 09 and the second indoor fan 10 to achieve the purpose of increasing or decreasing the indoor temperature, so that the change range of the indoor temperature is within the preset range, and preventing the indoor temperature from changing greatly in the constant-temperature dehumidification mode.
Referring to fig. 4, fig. 4 is a flowchart illustrating a third embodiment of the control method of the air conditioner according to the present invention, and based on the second embodiment, the step of adjusting the rotation speeds of the first indoor fan and the second indoor fan according to the difference in S40 includes:
step S45, acquiring a first adjustment coefficient of the first indoor fan and a second adjustment coefficient of the second indoor fan;
and step S46, adjusting the rotating speed of the first indoor fan according to the difference and the first adjusting coefficient, and adjusting the rotating speed of the second indoor fan according to the difference and the second adjusting coefficient.
In this embodiment, the first adjustment coefficient represents a ratio of the rotation speed adjustment of the first indoor fan 09, the second adjustment coefficient represents an adjustment ratio of the rotation speed of the second indoor fan, the first adjustment coefficient may be set to 1, the number 1 means a preset ratio of a difference between a maximum rotation speed and a minimum rotation speed of the first indoor fan 09, the second adjustment coefficient may be set to 2, and the number 2 means a preset ratio of a difference between a maximum rotation speed and a minimum rotation speed of the second indoor fan 10.
Specifically, when the difference between the indoor temperature and the preset temperature is not within the preset range, the air conditioner controls the first indoor fan 09 to adjust the rotation speed, that is, controls the first indoor fan 09 of the air conditioner to increase or decrease the rotation speed of the first indoor fan 09 according to a preset ratio of the difference between the maximum rotation speed and the minimum rotation speed of the first indoor fan 09; the air conditioner controls the second indoor fan 10 to adjust the rotation speed, that is, controls the second indoor fan 10 of the air conditioner to increase or decrease the rotation speed of the second indoor fan 10 according to a preset ratio of a difference between the maximum rotation speed and the minimum rotation speed of the second indoor fan 10. The maximum rotating speed of the first indoor fan 09 is 1050 revolutions per minute, the minimum rotating speed of the first indoor fan 09 is 450 revolutions per minute, and the difference value between the maximum rotating speed and the minimum rotating speed of the first indoor fan 09 is 600 revolutions per minute; the maximum rotation speed of the second indoor fan 10 is 550 rpm, the minimum rotation speed is 250 rpm, and the difference between the maximum rotation speed and the minimum rotation speed of the second indoor fan 10 is 300 rpm; the preset proportion can be 5%, namely the coefficient 1 represents 6 revolutions per minute, the coefficient 2 represents 3 revolutions per minute, and the adjustment of the rotating speed of the first indoor fan 09 is to increase or decrease the rotating speed by 6 revolutions per minute on the basis of the current rotating speed of the first indoor fan 09; adjusting the rotation speed of the second indoor fan 10 is to increase or decrease the rotation speed by 3 rpm on the basis of the current rotation speed of the second indoor fan 10. Of course, in other embodiments, the difference between the maximum rotation speed and the minimum rotation speed of the indoor fan of the air conditioner is different due to different structures and performances, and meanwhile, the preset ratio can be set according to specific requirements, so that the first adjustment coefficient and the second adjustment coefficient have different meanings.
In the technical scheme provided by this embodiment, the rotation speed of the first indoor fan 09 is adjusted according to the difference and the first adjustment coefficient by obtaining the first adjustment coefficient of the first indoor fan 09 and the second adjustment coefficient of the second indoor fan 10, and the rotation speed of the second indoor fan 10 is adjusted according to the difference and the second adjustment coefficient. Because the air conditioner is preset with the proportion for adjusting the air speed of the indoor fan, when the air speed of the indoor fan needs to be adjusted, the indoor fan is directly controlled to be adjusted according to the preset proportion for adjusting the air speed, and the phenomenon that the indoor temperature changes too much due to too large adjustment range in the air speed adjusting process is effectively avoided.
Referring to fig. 5, fig. 5 is a flowchart illustrating a fourth embodiment of the control method of the air conditioner according to the present invention, wherein based on the first embodiment, the step of S40 includes:
step S50, when the air conditioner exits the constant temperature dehumidification mode, the opening degree of the outdoor electronic expansion valve is adjusted to the opening degree before entering the constant temperature dehumidification mode;
in step S60, the opening degree of the indoor throttle member is adjusted to the maximum value, and the indoor throttle member is an electronic expansion valve.
In this embodiment, the air conditioner itself has other operation modes, and in order to avoid affecting the normal use of other functions of the air conditioner, in other operation modes of the air conditioner, for example, the cooling mode or the heating mode, the refrigerant flow rate is generally controlled by the outdoor electronic expansion valve 05, and the electronic expansion valve in the indoor throttle part 06 may not function, so after the air conditioner exits from the constant temperature dehumidification mode, the opening degree of the outdoor electronic expansion valve needs to be adjusted to the opening degree before entering the constant temperature mode, and the opening degree of the electronic expansion valve in the indoor throttle part needs to be adjusted to the maximum value.
In the technical scheme provided by this embodiment, when the air conditioner exits the constant temperature dehumidification mode, the opening degree of the electronic expansion valve 06 in the indoor throttling component is adjusted to the maximum value by adjusting the opening degree of the outdoor electronic expansion valve to the opening degree before entering the constant temperature dehumidification mode, so that the air conditioner can normally operate in other operation modes without affecting other functions of the air conditioner.
Based on the above embodiments, the present invention further provides an air conditioner, where the air conditioner may include a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, the steps of the method for controlling an air conditioner according to any of the above embodiments are implemented.
Based on the above embodiments, the present invention also provides a readable storage medium, on which a computer program is stored, the computer program, when executed by a processor, implementing the steps of the control method of the air conditioner according to any of the above embodiments.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. The control method of the air conditioner is characterized in that the air conditioner comprises a first indoor heat exchanger, a second indoor heat exchanger, an indoor throttling component, a first indoor fan and a second indoor fan, wherein the first indoor fan is used for exchanging heat with the first indoor heat exchanger, the second indoor fan is used for exchanging heat with the second indoor heat exchanger, and the first indoor fan blows air at an air return port of the indoor unit to an air outlet of the indoor unit; one end of the indoor throttling component is connected with an outdoor electronic expansion valve of an outdoor unit through the first indoor heat exchanger, the other end of the indoor throttling component is connected with a four-way valve of the outdoor unit through the second indoor heat exchanger, and the control method comprises the following steps:
after the air conditioner enters a constant temperature dehumidification mode, controlling the air conditioner to operate a refrigeration mode, and increasing the opening degree of an outdoor electronic expansion valve in an outdoor unit;
the indoor temperature of the environment where the air conditioner is located is obtained regularly;
acquiring a difference value between the indoor temperature and a target temperature; and the number of the first and second groups,
and adjusting the rotating speeds of the first indoor fan and the second indoor fan according to the difference value so as to enable the difference value between the indoor temperature and the target temperature to be within a preset range.
2. The control method of an air conditioner according to claim 1, wherein the step of adjusting the rotation speeds of the first indoor fan and the second indoor fan according to the difference value so that the difference value between the indoor temperature and the target temperature is within a preset range comprises:
comparing the difference value with a first boundary value and a second boundary value corresponding to the preset range, wherein the first boundary value is larger than the second boundary value;
when the difference value is larger than the first boundary value, controlling the first indoor fan to reduce the rotating speed, and controlling the second indoor fan to increase the rotating speed; and the number of the first and second groups,
and when the difference value is smaller than the second boundary value, controlling the first indoor fan to increase the rotating speed, and controlling the second indoor fan to decrease the rotating speed.
3. The method of controlling an air conditioner according to claim 2, wherein the step of comparing the difference value with the first and second boundary values corresponding to the preset range includes:
and when the difference value is greater than or equal to the second boundary value and less than or equal to the first boundary value, keeping the rotating speeds of the first indoor fan and the second indoor fan unchanged.
4. The control method of an air conditioner according to claim 2, wherein the step of adjusting the rotation speeds of the first indoor fan and the second indoor fan according to the difference value comprises:
acquiring a first adjustment coefficient of the first indoor fan and a second adjustment coefficient of the second indoor fan; and the number of the first and second groups,
and adjusting the rotating speed of the first indoor fan according to the difference and the first adjusting coefficient, and adjusting the rotating speed of the second indoor fan according to the difference and the second adjusting coefficient.
5. The control method of an air conditioner according to claim 1, wherein the indoor throttling part includes an electronic expansion valve, and the step of adjusting the rotation speeds of the first indoor fan and the second indoor fan according to the difference is performed while performing the steps of:
and adjusting the opening degree of the electronic expansion valve according to the difference value.
6. The control method of an air conditioner according to claim 1, wherein the target temperature is an indoor temperature at which the air conditioner enters the constant temperature dehumidification mode.
7. The method of claim 1, wherein between the step of increasing the opening degree of the outdoor electronic expansion valve in the outdoor unit and the step of periodically acquiring the indoor temperature of the environment in which the air conditioner is located, further comprising the steps of:
and controlling the first indoor fan and the second indoor fan to operate at a preset rotating speed.
8. The method of controlling an air conditioner according to claim 1, wherein after the step of adjusting the rotation speeds of the first indoor fan and the second indoor fan according to the difference value such that the difference value between the indoor temperature and the target temperature is within a preset range, the method further comprises:
when the air conditioner exits the constant temperature dehumidification mode, the opening degree of the outdoor electronic expansion valve is adjusted to be the opening degree before the air conditioner enters the constant temperature dehumidification mode; and the number of the first and second groups,
and adjusting the opening degree of the indoor throttling component to be the maximum value, wherein the indoor throttling component is an electronic expansion valve.
9. An air conditioner, characterized in that the air conditioner comprises a memory, a processor and a computer program stored on the memory and operable on the processor, wherein the computer program, when executed by the processor, implements the steps of the control method of the air conditioner according to any one of claims 1 to 8.
10. A readable storage medium, having stored thereon a computer program which, when executed by a processor, implements the steps of the control method of an air conditioner according to any one of claims 1 to 8.
CN202010770942.3A 2020-08-03 2020-08-03 Air conditioner, control method thereof and readable storage medium Pending CN114061114A (en)

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