CN117006633A - Air conditioner control method and device, air conditioner, equipment and medium - Google Patents

Air conditioner control method and device, air conditioner, equipment and medium Download PDF

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Publication number
CN117006633A
CN117006633A CN202210472182.7A CN202210472182A CN117006633A CN 117006633 A CN117006633 A CN 117006633A CN 202210472182 A CN202210472182 A CN 202210472182A CN 117006633 A CN117006633 A CN 117006633A
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CN
China
Prior art keywords
indoor heat
heat exchanger
air conditioner
refrigerant
flow
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210472182.7A
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Chinese (zh)
Inventor
唐亚林
席战利
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GD Midea Air Conditioning Equipment Co Ltd
Original Assignee
GD Midea Air Conditioning Equipment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GD Midea Air Conditioning Equipment Co Ltd filed Critical GD Midea Air Conditioning Equipment Co Ltd
Priority to CN202210472182.7A priority Critical patent/CN117006633A/en
Publication of CN117006633A publication Critical patent/CN117006633A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • 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 embodiment of the invention provides a control method and device of an air conditioner, the air conditioner, electronic equipment and storage media, wherein the air conditioner comprises the following components: the control valve is used for controlling the flow of the refrigerant in the second indoor heat exchanger; the method comprises the following steps: controlling the control valve to close or reduce the flow of the refrigerant passing through the second indoor heat exchanger; acquiring the coil temperature of a first indoor heat exchanger; the coil temperature is less than a first threshold value and the control valve is controlled to open or increase the flow of refrigerant through the second indoor heat exchanger.

Description

Air conditioner control method and device, air conditioner, equipment and medium
Technical Field
The present invention relates to a control method for an air conditioner, and more particularly, to a control method for an air conditioner, an apparatus for an air conditioner, an electronic device, and a storage medium.
Background
The air conditioner can effectively reduce indoor temperature during refrigeration operation, but cold air sent out by the air conditioner directly blows on people, people feel cold and uncomfortable, so that in order to avoid discomfort caused by the fact that cold air of the air conditioner blows on people, people can generally shelter from an air outlet of the air conditioner, cold air direct blowing is avoided, or the air quantity of the air conditioner is reduced, but the two ways easily cause that indoor air cannot circulate, so that the heat exchange capacity of the indoor heat exchanger is controlled to be reduced, the temperature of the indoor heat exchanger in the air conditioner is too low during long-time refrigeration operation of the air conditioner, the problem that the indoor heat exchanger is frozen is caused, and the reliability of an air conditioner refrigerating system is affected. Therefore, how to improve the reliability of the air conditioner based on consideration of the refrigerating demands of users is a technical problem to be solved.
Disclosure of Invention
The embodiment of the invention provides a control method and device of an air conditioner, the air conditioner, electronic equipment and a computer storage medium.
The embodiment of the invention provides a control method of an air conditioner, which comprises the following steps: the device comprises a first indoor heat exchanger, a second indoor heat exchanger and a control valve for controlling the flow of refrigerant in the second indoor heat exchanger; the method comprises the following steps:
controlling the control valve to close or reduce the flow of refrigerant through the second indoor heat exchanger;
acquiring the coil temperature of the first indoor heat exchanger;
the coil temperature is less than a first threshold value, and the control valve is controlled to open or increase the flow of refrigerant through the second indoor heat exchanger.
In the above scheme, the air conditioner further includes: electronic expansion valves for regulating the flow of refrigerant in the first and second indoor heat exchangers; when the coil temperature is less than a first threshold, further comprising: and reducing the opening degree of the electronic expansion valve.
It can be seen that by reducing the opening of the electronic expansion valve, the flow rate of the refrigerant in the first indoor heat exchanger can be reduced, so that the temperature of the first indoor heat exchanger can be increased, and the reliability of the air conditioner can be improved.
In the above scheme, the air conditioner further includes: a compressor; when the coil temperature is less than a first threshold, further comprising:
reducing the operating frequency of the compressor to a first operating frequency;
and controlling the compressor to operate according to the first operating frequency.
It can be seen that the running frequency of the air conditioner compressor is reduced, the power provided by the compressor for the first indoor heat exchanger and the second indoor heat exchanger can be reduced, the flow of the refrigerant in the first indoor heat exchanger and the second indoor heat exchanger is reduced, and therefore the temperature of the second indoor heat exchanger can be reduced, and the reliability of the air conditioner is improved.
In the above scheme, the air conditioner further includes: a first air outlet for supplying air to the upper part of the air conditioner and a second air outlet for supplying air to the lower part of the air conditioner; the first air outlet is connected with the first indoor heat exchanger, and the second air outlet is connected with the second indoor heat exchanger.
It can be seen that only the first air outlet connected with the first indoor heat exchanger can send cold air to the upper part of the air conditioner, so that the cold air quantity sent to the lower part of the air conditioner can be reduced.
In the above solution, after the controlling the opening or increasing of the refrigerant flow through the second indoor heat exchanger, the controlling further includes:
re-acquiring the coil temperature of the first indoor heat exchanger;
the re-acquired coil temperature is greater than a second threshold, and the control valve is controlled to close or reduce the flow of the refrigerant passing through the second indoor heat exchanger; wherein the second threshold is greater than the first threshold.
It can be seen that by re-acquiring the coil temperature of the first indoor heat exchanger, comparing the re-acquired coil temperature value with the second threshold value, it is determined whether the control valve is closed or whether the flow of the refrigerant passing through the second indoor heat exchanger is reduced, that is, the working state of the control valve can be correspondingly adjusted according to the working condition of the air conditioner, and the reliability of the air conditioner is improved.
In the above scheme, the air conditioner further includes: electronic expansion valves for regulating the flow of refrigerant in the first and second indoor heat exchangers; when the retrieved coil temperature is greater than a second threshold, further comprising: and increasing the opening degree of the electronic expansion valve.
It can be seen that by increasing the opening of the electronic expansion valve, the amount of cold air sent out by the air conditioner indoors can be increased, so that the refrigerating requirement of a user can be met.
In the above scheme, the air conditioner further includes: a compressor; when the retrieved coil temperature is greater than a second threshold, further comprising:
raising the operating frequency of the compressor to a second operating frequency;
the compressor is controlled to operate at a second operating frequency.
It can be seen that the operation frequency of the compressor is improved, and the power provided for the first indoor heat exchanger can be improved, so that the cold air quantity sent out to the indoor by the first indoor heat exchanger can be increased, and the refrigeration requirement of a user can be met.
In the above aspect, the control valve includes: an expansion valve or solenoid valve; the electronic expansion valve includes: an expansion valve.
The embodiment of the invention also provides a control device of the air conditioner, which comprises: the device comprises a first indoor heat exchanger, a second indoor heat exchanger and a control valve for controlling the flow of refrigerant in the second indoor heat exchanger; the device comprises at least:
a first control module for controlling the control valve to close or reduce the flow of refrigerant through the second indoor heat exchanger;
the acquisition module is used for acquiring the coil temperature of the first indoor heat exchanger;
and the second control module is used for controlling the opening of the control valve or increasing the flow of the refrigerant passing through the second indoor heat exchanger when the temperature of the coil pipe is smaller than a first threshold value.
In one implementation, the air conditioner further includes: electronic expansion valves for regulating the flow of refrigerant in the first and second indoor heat exchangers; the second control module is further configured to, when the coil temperature is less than a first threshold: and reducing the opening degree of the electronic expansion valve.
In one implementation, the air conditioner further includes: a compressor; the second control module is further configured to, when the coil temperature is less than a first threshold:
reducing the operating frequency of the compressor to a first operating frequency;
and controlling the compressor to operate according to the first operating frequency.
In one implementation, the air conditioner further includes: a first air outlet for supplying air to the upper part of the air conditioner and a second air outlet for supplying air to the lower part of the air conditioner; the first air outlet is connected with the first indoor heat exchanger, and the second air outlet is connected with the second indoor heat exchanger.
In one implementation, the second control module, after controlling the control valve to open or increase the flow of refrigerant through the second indoor heat exchanger, is further configured to:
re-acquiring the coil temperature of the first indoor heat exchanger;
the re-acquired coil temperature is greater than a second threshold, and the control valve is controlled to close or reduce the flow of the refrigerant passing through the second indoor heat exchanger; wherein the second threshold is greater than the first threshold.
In one implementation, the air conditioner further includes: electronic expansion valves for regulating the flow of refrigerant in the first and second indoor heat exchangers; the second control module is further configured to, when the retrieved coil temperature is greater than a second threshold: and increasing the opening degree of the electronic expansion valve.
In one implementation, the air conditioner further includes: a compressor; the second control module is further configured to, when the retrieved coil temperature is greater than a second threshold:
raising the operating frequency of the compressor to a second operating frequency;
the compressor is controlled to operate at a second operating frequency.
In one implementation, the control valve includes: a flow regulating valve or a solenoid valve.
The embodiment of the invention also provides electronic equipment, which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor realizes the control method of any air conditioner when executing the program.
The embodiment of the invention also provides an air conditioner, which comprises the control device or the electronic equipment of the air conditioner.
The embodiment of the invention also provides a computer storage medium, on which a computer program is stored, which when being executed by a processor, realizes the control method of any one of the air conditioners.
Based on the control method, the device, the electronic equipment, the air conditioner and the computer storage medium of the air conditioner provided by the embodiment of the invention, the control valve is controlled to be closed or the flow of the refrigerant passing through the second indoor heat exchanger is reduced; acquiring the coil temperature of the first indoor heat exchanger; the coil temperature is less than a first threshold value, and the control valve is controlled to open or increase the flow of refrigerant through the second indoor heat exchanger.
It can be seen that, in the embodiment of the present invention, when the control valve is closed, it is possible to realize that the refrigerant passes through the first indoor heat exchanger entirely, and does not pass through the second indoor heat exchanger, and then the second indoor heat exchanger cannot exchange heat through the refrigerant; when the flow rate of the refrigerant passing through the second indoor heat exchanger is reduced, the flow rate of the refrigerant passing through the second indoor heat exchanger can be reduced, and then the refrigerating capacity of the second indoor heat exchanger is reduced, namely, the flow rate of the refrigerant passing through the second indoor heat exchanger can be closed or reduced by controlling the control valve, so that the cold air quantity sent out by the air conditioner to the indoor is reduced, and the refrigerating effect of the air conditioner is reduced. After the control valve closes or reduces the flow of refrigerant through the second indoor heat exchanger, the flow of refrigerant through the first indoor heat exchanger increases, possibly resulting in an excessive low temperature of the first indoor heat exchanger, causing the first indoor heat exchanger to freeze. According to the embodiment of the invention, the coil temperature of the first indoor heat exchanger is obtained, when the coil temperature is smaller than the first threshold value, the control valve is controlled to be opened or the flow rate of the refrigerant passing through the second indoor heat exchanger is increased, so that a part of the refrigerant flows to the second indoor heat exchanger, the flow rate of the refrigerant in the first indoor heat exchanger can be reduced, the temperature of the first indoor heat exchanger can be effectively improved, and the reliability of the air conditioner is improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed.
Drawings
Fig. 1 is a schematic structural diagram of an air conditioner according to an embodiment of the present invention;
fig. 2 is a flow chart of a control method of an air conditioner according to an embodiment of the present invention;
fig. 3 is a schematic flow chart of a specific implementation of a control method of an air conditioner according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a control device of an air conditioner according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
The technical scheme of the embodiment of the invention is provided for solving the problem that the indoor heat exchanger is frozen due to the fact that the temperature of the indoor heat exchanger in the air conditioner is too low when the air conditioner is in long-time refrigeration operation. Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. It is to be understood that the examples provided herein are for the purpose of illustration only and are not intended to limit the invention. In addition, the embodiments provided below are some of the embodiments for carrying out the present invention, but not all of the embodiments for carrying out the present invention, and the technical solutions described in the embodiments of the present invention may be implemented in any combination without conflict.
It should be noted that, in the embodiments of the present invention, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a method or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such method or apparatus. Without further limitation, an element defined by the phrase "comprising one does not exclude the presence of other related elements in a method or apparatus comprising the element (e.g., a step in a method or an element in an apparatus, e.g., an element may be part of a circuit, part of a processor, part of a program or software, etc.).
The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the term "at least one" herein means any one of a plurality or any combination of at least two of a plurality, for example, including at least one of A, B, C, and may mean including any one or more elements selected from the group consisting of A, B and C.
For example, the control method of an air conditioner provided in the embodiment of the present invention includes a series of steps, but the control method of an air conditioner provided in the embodiment of the present invention is not limited to the described steps, and similarly, the control device of an air conditioner provided in the embodiment of the present invention includes a series of modules, but the control device of an air conditioner provided in the embodiment of the present invention is not limited to the explicitly described modules, and may also include modules that are required to be set when acquiring related information or performing processing based on information.
The embodiments of the present invention may be implemented based on a processor of an electronic device in an air conditioner, where the processor may be at least one of an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a digital signal processor (Digital Signal Processor, DSP), a digital signal processing device (Digital Signal Processing Device, DSPD), a programmable logic device (Programmable Logic Device, PLD), a field programmable gate array (Field Programmable Gate Array, FPGA), a central processing unit (Central Processing Unit, CPU), a controller, a microcontroller, and a microprocessor.
Referring to fig. 1, referring to a schematic structural diagram of an air conditioner provided in an embodiment of the present invention, the air conditioner includes: the control valve 5, the first indoor heat exchanger 6 and the second indoor heat exchanger 7, wherein the first indoor heat exchanger 6 and the second indoor heat exchanger 7 are used for carrying out heat exchange between low-temperature refrigerant and outside air, and the air cooled after heat release is sent into the room through gasification heat absorption so as to achieve the refrigerating effect.
In the embodiment of the present invention, the control valve 5 is connected to the second heat exchanger 7, and the control valve 5 may be used to control the direction, flow, speed and other parameters of the refrigerant of the second indoor heat exchanger 7. The control valve 5 may be a flow rate adjusting valve or a solenoid valve, wherein the flow rate adjusting valve may be an electronic expansion valve, and the present invention is not limited thereto.
In the embodiment of the invention, the electronic expansion valve is used for throttling the liquid refrigerant with high temperature and high pressure into low-temperature low-pressure wet steam through the electronic expansion valve, then the refrigerant absorbs heat in the indoor heat exchanger to achieve the refrigerating effect, and the electronic expansion valve controls the flow of the valve through the superheat degree change of the tail end of the indoor heat exchanger.
In embodiments of the present invention, solenoid valves are the basic components for controlling the automation of fluids, including hydraulic, pneumatic, and the like. Solenoid valves may be used to regulate the direction, flow, velocity, and other parameters of the fluid. The solenoid valve can be matched with different circuits to realize expected control, and the control precision and flexibility can be ensured.
In the embodiment of the invention, the on-off of the refrigerant in the second indoor heat exchanger 7 can be controlled by controlling the opening or closing of the control valve 5, and when the control valve 5 is opened, the refrigerant can pass through the second indoor heat exchanger 7, namely the second indoor heat exchanger 7 can exchange heat with the refrigerant; when the control valve 5 is closed, the refrigerant cannot pass through the second indoor heat exchanger 7, i.e., the second indoor heat exchanger 7 cannot exchange heat with the refrigerant. If the control valve 5 is a flow regulating valve (e.g., an electronic expansion valve), the flow rate of the refrigerant passing through the second indoor heat exchanger may be reduced or increased by reducing or increasing the opening degree of the control valve 5.
Fig. 2 is a schematic flow chart of a control method of an air conditioner according to an embodiment of the present invention, as shown in fig. 2, the flow may include:
step 201: the control valve is controlled to close or reduce the flow of refrigerant through the second indoor heat exchanger.
In one implementation, the air conditioner further includes: a first air outlet for supplying air to the upper part of the air conditioner and a second air outlet for supplying air to the lower part of the air conditioner; the first air outlet is connected with the first indoor heat exchanger, and the second air outlet is connected with the second indoor heat exchanger.
In the embodiment of the invention, when the air conditioner is in refrigeration operation, the control valve 5 is opened, the first indoor heat exchanger 6 and the second indoor heat exchanger 7 exchange heat through the refrigerant, and cold air is sent to the indoor, so that the indoor temperature is reduced. After the air conditioner is operated for a long time, the indoor temperature is already reduced, that is, the expected refrigerating effect of the air conditioner is achieved, if the air conditioner is continuously controlled to operate in the refrigerating mode at the moment, and cold air is continuously fed to the lower part of the air conditioner through the second air outlet, the user can feel cold when the cold air is directly blown to the user, and discomfort is caused to the user, so that the air conditioner opens the double-temperature operation mode, and the control valve 5 is controlled to close or reduce the flow of the refrigerant passing through the second indoor heat exchanger 7.
In the embodiment of the invention, when the control valve 5 is closed, the refrigerant can only pass through the first indoor heat exchanger 6 and cannot pass through the control valve 5 and the second indoor heat exchanger 7, namely, the first indoor heat exchanger 6 can continue to exchange heat through the refrigerant, the first air outlet supplies cold air to the upper part of the air conditioner, the indoor environment temperature is kept not to rise, and the second indoor heat exchanger 7 cannot exchange heat through the refrigerant.
In the embodiment of the present invention, when the flow rate of the refrigerant passing through the second indoor heat exchanger 7 is reduced, the capacity of the second indoor heat exchanger 7 for performing heat exchange through the refrigerant is reduced, so that the refrigerating effect of the second indoor heat exchanger 7 is reduced, and the amount of cold air sent out into the room by the second indoor heat exchanger 7 is reduced.
Step 202: the coil temperature of the first indoor heat exchanger is obtained.
In the embodiment of the present invention, after the control valve 5 is closed, the refrigerant passes through the first indoor heat exchanger 6 entirely, and the first indoor heat exchanger 6 exchanges heat through the refrigerant, but after a period of operation, the temperature of the first indoor heat exchanger 6 may be too low, and the coil of the first indoor heat exchanger 6 may be frozen, thereby affecting the reliability of the air conditioner. Therefore, by acquiring the coil temperature of the first indoor heat exchanger 6, it is determined whether the first indoor heat exchanger 6 has a temperature too low based on the coil temperature of the first indoor heat exchanger 6.
In the embodiment of the invention, the air conditioner is internally provided with a temperature acquisition module which can be used for acquiring the coil temperature of the first indoor heat exchanger 6.
Step 203: the coil temperature is less than a first threshold value and the control valve is controlled to open or increase the flow of refrigerant through the second indoor heat exchanger.
In the embodiment of the present invention, the first threshold may be preset according to the existing experience or the requirement of the user, and the first threshold may be, for example, 0 ℃ or-5 ℃, which is not limited to the present invention.
In the embodiment of the present invention, the coil temperature of the first indoor heat exchanger 6 is obtained, and when the coil temperature is smaller than the first threshold value, it is indicated that the current temperature of the first indoor heat exchanger 6 is lower, so that the air conditioner needs to turn on the anti-freezing mode, and the control valve 5 is controlled to turn on or increase the flow of the refrigerant passing through the second indoor heat exchanger 7, so that the flow of the refrigerant passing through the second indoor heat exchanger 7 is increased, and the first indoor heat exchanger 6 and the second indoor heat exchanger 7 exchange heat through the refrigerant at the same time.
In the embodiment of the invention, when the temperature of the coil pipe is greater than or equal to the first threshold value, the temperature of the first indoor heat exchanger 6 is normal, so that the air conditioner can keep the double-temperature operation mode, namely, the control valve 5 is controlled to be closed or the flow rate of the refrigerant passing through the second indoor heat exchanger 7 is reduced, so that the flow rate of the refrigerant passing through the first indoor heat exchanger 6 is increased, the first indoor heat exchanger 6 can continue to exchange heat of the refrigerant, refrigeration is realized, and the indoor environment temperature is kept not to rise.
It can be seen that in the embodiment of the present invention, the control of the air conditioner to open the dual temperature operation mode can be achieved by controlling the control valve 5 to close or reduce the flow rate of the refrigerant passing through the second indoor heat exchanger 7, where the control valve 5 is used to control the flow rate of the refrigerant in the second indoor heat exchanger 7. When the control valve 5 is closed, the refrigerant can only pass through the first indoor heat exchanger 6 and cannot pass through the second indoor heat exchanger 7, so that only the first indoor heat exchanger 6 can exchange heat through the refrigerant, when the flow rate of the refrigerant passing through the second indoor heat exchanger is reduced, the flow rate of the refrigerant passing through the second indoor heat exchanger can be reduced, the refrigerating capacity of the second indoor heat exchanger is reduced, and the cold air quantity sent out by the air conditioner into the room can be reduced. And, after the control valve 5 is closed or reduces the flow rate of the refrigerant passing through the second indoor heat exchanger 7, the coil temperature of the first indoor heat exchanger 6 is obtained, when the coil temperature is smaller than the first threshold value, the control valve 5 is controlled to open or increase the flow rate of the refrigerant passing through the second indoor heat exchanger 7, so that a part of the refrigerant flows to the second indoor heat exchanger 7, the flow rate of the refrigerant in the first indoor heat exchanger 6 can be reduced, the temperature of the first indoor heat exchanger 6 can be effectively increased, and the reliability of the air conditioner in refrigeration operation is improved.
In some embodiments, the air conditioner further comprises: electronic expansion valves for regulating the flow of refrigerant in the first indoor heat exchanger and the second indoor heat exchanger; when the coil temperature is less than the first threshold, further comprising: the opening degree of the electronic expansion valve is reduced.
In some embodiments, referring to fig. 1, the air conditioner further includes an electronic expansion valve 4, and the magnitude of the refrigerant flow rate through the first indoor heat exchanger 6 and the second indoor heat exchanger 7 can be controlled by adjusting the opening degree of the electronic expansion valve 4.
In some embodiments, the opening degree of the electronic expansion valve 4 is reduced such that the flow rate of the refrigerant passing through the first indoor heat exchanger 6 and the second indoor heat exchanger 7 is reduced, and thus, the heat exchange capacity of the first indoor heat exchanger 6 and the second indoor heat exchanger 7 is reduced, and the amount of cold air sent into the room is reduced. It can be seen that by decreasing the opening of the electronic expansion valve 4, the flow rate of the refrigerant in the first indoor heat exchanger 6 can be decreased, thereby increasing the temperature of the first indoor heat exchanger 6 and improving the reliability of the air conditioner.
In some embodiments, the air conditioner further comprises: a compressor; when the coil temperature is less than the first threshold, further comprising:
reducing the operating frequency of the compressor to a first operating frequency;
the compressor is controlled to operate at a first operating frequency.
In some embodiments, referring to fig. 1, the air conditioner further includes a compressor 1, which is a fluid machine that lifts low-pressure gas into high-pressure gas, and is a core device of the air conditioner refrigeration system. The compressor sucks low-temperature low-pressure refrigerant gas from the air suction pipe, drives the piston to compress the refrigerant gas through motor operation, and then discharges high-temperature high-pressure refrigerant gas to the exhaust pipe to provide power for refrigeration cycle.
In some embodiments, the first operating frequency may be preset according to the existing experience, where the first operating frequency represents an operating parameter when the operating frequency of the compressor 1 is low, and the first operating frequency may be set to 20 hz, may be set to 40 hz, or may be set to a range of 10-50 hz, which is not limited to the present invention.
In some embodiments, when the coil temperature is less than the first threshold value, the compressor 1 may be further controlled to operate at the first operating frequency, where the compressor 1 may be further controlled to operate at the first operating frequency for n minutes, and n may be 10 or 20, for example, which is not limited to the present invention.
It can be seen that by reducing the operating frequency of the air conditioner compressor 1, the power provided by the compressor 1 to the first indoor heat exchanger 6 and the second indoor heat exchanger 7 can be reduced, and the flow rate of the refrigerant in the first indoor heat exchanger 6 and the second indoor heat exchanger 7 can be reduced, so that the temperature of the second indoor heat exchanger 6 can be reduced, and the reliability of the air conditioner can be improved.
In some embodiments, after controlling the control valve to open or increase the flow of refrigerant through the second indoor heat exchanger, further comprising:
re-acquiring the coil temperature of the first indoor heat exchanger;
the re-acquired coil temperature is larger than a second threshold value, and the control valve is controlled to be closed or reduce the flow of the refrigerant passing through the second indoor heat exchanger; wherein the second threshold is greater than the first threshold.
In some embodiments, the second threshold may be preset according to the existing experience or the actual requirement of the user, and illustratively, the second threshold may be 1 ℃ or 3 ℃, which is not limited to the present invention.
In some embodiments, after the control valve 5 is controlled to open or increase the flow rate of the refrigerant passing through the second indoor heat exchanger 7, the refrigerant may pass through the first indoor heat exchanger 6 and the second indoor heat exchanger 7 to decrease the flow rate of the refrigerant in the first indoor heat exchanger 6, thereby decreasing the temperature of the first indoor heat exchanger 6, but the first indoor heat exchanger 6 and the second indoor heat exchanger 7 simultaneously exchange heat through the refrigerant, so that the amount of cool air sent out of the air conditioner into the room increases, which may cause discomfort to the user. Therefore, after the air conditioner is operated in the anti-freezing mode for a while, the coil temperature of the first indoor heat exchanger 6 is re-acquired, and the operation mode of the air conditioner is determined according to the re-acquired coil temperature.
In some embodiments, when the re-acquired coil temperature is greater than the second threshold value, it indicates that the coil temperature of the first indoor heat exchanger 6 has increased, that is, the temperature of the first indoor heat exchanger 6 has also increased to be normal, and thus, the control valve 5 is controlled to close or reduce the flow rate of the refrigerant passing through the second indoor heat exchanger 7, so that the refrigerant does not pass through the second indoor heat exchanger 7 or the flow rate of the refrigerant passing through the second indoor heat exchanger 7 is reduced, thereby reducing the amount of cool air sent out of the air conditioner into the room.
In some embodiments, when the retrieved coil temperature is less than or greater than the second threshold, it is indicated that the coil temperature of the first indoor heat exchanger 6 is still low, i.e., the temperature of the first indoor heat exchanger 6 is low, and therefore, the air conditioner is continuously controlled to operate in the anti-freeze mode of operation.
In some embodiments, the coil temperature of the first indoor heat exchanger 6 may be periodically acquired after the air conditioner is turned on to the anti-freeze mode of operation, and the mode of operation of the air conditioner may be determined by comparing the coil temperature of the first indoor heat exchanger 6 to a second threshold. Here, the coil temperature of the first indoor heat exchanger 6 may be collected every 5 minutes, or every 10 minutes, and compared with the second threshold value, which is not limited to the present invention
It can be seen that by re-acquiring the coil temperature of the first indoor heat exchanger 6 and comparing the re-acquired coil temperature value with the second threshold value, whether the air conditioner is switched from the anti-freezing operation mode to the dual-temperature operation mode can be determined, the operation mode of the air conditioner can be correspondingly adjusted according to the working condition of the air conditioner, and the reliability of the air conditioner is improved.
In some embodiments, when the retrieved coil temperature is greater than the second threshold, further comprising: the opening degree of the electronic expansion valve is increased.
In some embodiments, when the re-acquired coil temperature is greater than the second threshold value, the air conditioner is switched from the anti-freezing mode to the dual-temperature operation mode, and thus, when the opening degree of the electronic expansion valve 4 is increased, the flow rate of the refrigerant passing through the first indoor heat exchanger 6 is increased, so that the heat exchange capacity of the first indoor heat exchanger 6 is enhanced, and the amount of cold air sent indoors by the air conditioner is increased. It can be seen that by increasing the opening of the electronic expansion valve 4, the amount of cold air sent out by the air conditioner indoors can be increased, so that the refrigerating requirement of a user can be met, and the comfort level of the air conditioner in use can be improved.
In some embodiments, when the retrieved coil temperature is greater than the second threshold, further comprising:
raising the operating frequency of the compressor to a second operating frequency;
the compressor is controlled to operate at a second operating frequency.
In some embodiments, when the re-acquired coil temperature is greater than the second threshold value, the second operating frequency may be preset according to the existing experience, where the second operating frequency represents an operating parameter when the operating frequency of the compressor 1 is higher, and the second operating frequency may be set to be 50 hz, or may be set to be 70 hz, or may be set to be in the range of 50-70 hz, which is not limited to the present invention.
In some embodiments, the compressor 1 is controlled to operate according to the second operating frequency, so that the power of the compressor 1 for improving the first indoor heat exchanger 6 can be improved, and accordingly the amount of cold air sent out to the room by the first indoor heat exchanger 6 can be increased, the refrigeration requirement of a user can be met, and the comfort level of the air conditioner in use is improved.
In some embodiments, referring to fig. 1, the air conditioner further comprises: the four-way valve 2 and the outdoor heat exchanger 3, wherein the four-way valve 2 changes the flow direction of the refrigerant by a user, thereby realizing the control of the switching of the refrigerating or heating function of the air conditioner, and the outdoor heat exchanger 3 is used for converting the low-pressure gas or steam of the refrigerant into high-pressure liquid. When the air conditioner is in operation, the flowing direction of the refrigerant is shown by an arrow in fig. 1, low-pressure steam of the refrigerant is sucked by the compressor 1 and compressed into high-pressure steam, the high-pressure steam is discharged to the outdoor heat exchanger 3, the high-pressure steam is condensed into high-pressure liquid, then the high-pressure liquid flows to the first indoor heat exchanger 6 and the control valve 5 through the electronic expansion valve 4 and flows to the second indoor heat exchanger 7 through the control valve 5, the high-pressure liquid is evaporated at a corresponding low pressure by the first indoor heat exchanger 6 and the second indoor heat exchanger 7, surrounding heat is absorbed, and cooled air after heat release is sent into a room, so that indoor air continuously circulates and flows to achieve the purpose of reducing the temperature.
Fig. 3 is a schematic flow chart of a specific implementation of a control method of an air conditioner according to an embodiment of the present invention, as shown in fig. 3, the flow may include:
step 301: the control valve is controlled to be closed.
Step 302: the coil temperature T1 of the first indoor heat exchanger is obtained.
Step 303: whether T1 is smaller than the first threshold is determined, if yes, step 304 is executed, and if not, step 302 is executed.
Step 304: the control valve is controlled to open for t minutes.
Step 305: the coil temperature T1 of the first indoor heat exchanger is retrieved.
Step 306: whether T1 is greater than the second threshold is determined, if yes, step 307 is executed, and if not, step 304 is executed.
Step 307: the control valve is closed and step 302 is performed.
It will be appreciated by those skilled in the art that in the above-described method of the specific embodiments, the written order of steps is not meant to imply a strict order of execution but rather should be construed according to the function and possibly inherent logic of the steps.
Based on the foregoing embodiments, the embodiments of the present invention provide a control device for an air conditioner, where the device includes units included, and modules included in the units may be implemented by a processor and a memory in an electronic device; of course, the method can also be realized by a specific logic circuit; in practice, the processor may be ASIC, CPU, DSP, DSPD, PLD, FPGA, or the like.
Fig. 4 is a schematic diagram of a control device of an air conditioner according to an embodiment of the present invention, referring to fig. 4, the device at least includes:
a first control module 401 for controlling the control valve to close or reduce the flow of refrigerant through the second indoor heat exchanger;
an acquisition module 402, configured to acquire a coil temperature of the first indoor heat exchanger;
a second control module 403 for controlling the opening of the control valve or increasing the flow of refrigerant through the second indoor heat exchanger, when the coil temperature is less than a first threshold.
In one implementation, the air conditioner further includes: electronic expansion valves for regulating the flow of refrigerant in the first and second indoor heat exchangers; the second control module 403 is further configured to, when the coil temperature is less than a first threshold: and reducing the opening degree of the electronic expansion valve.
In one implementation, the air conditioner further includes: a compressor; the second control module 403 is further configured to, when the coil temperature is less than a first threshold:
reducing the operating frequency of the compressor to a first operating frequency;
and controlling the compressor to operate according to the first operating frequency.
In one implementation, the air conditioner further includes: a first air outlet for supplying air to the upper part of the air conditioner and a second air outlet for supplying air to the lower part of the air conditioner; the first air outlet is connected with the first indoor heat exchanger, and the second air outlet is connected with the second indoor heat exchanger.
In one implementation, the second control module 403, after controlling the control valve to open or increase the flow of refrigerant through the second indoor heat exchanger, is further configured to:
re-acquiring the coil temperature of the first indoor heat exchanger;
the re-acquired coil temperature is greater than a second threshold, and the control valve is controlled to close or reduce the flow of the refrigerant passing through the second indoor heat exchanger; wherein the second threshold is greater than the first threshold.
In one implementation, the air conditioner further includes: electronic expansion valves for regulating the flow of refrigerant in the first and second indoor heat exchangers; the second control module 403 is further configured to, when the retrieved coil temperature is greater than a second threshold: and increasing the opening degree of the electronic expansion valve.
In one implementation, the air conditioner further includes: a compressor; the second control module 403 is further configured to, when the retrieved coil temperature is greater than a second threshold:
raising the operating frequency of the compressor to a second operating frequency;
the compressor is controlled to operate at a second operating frequency.
In one implementation, the control valve includes: a flow regulating valve or a solenoid valve.
It should be noted that the description of the above device embodiments is similar to the description of the method embodiments described above, with similar advantageous effects as the method embodiments. For technical details not disclosed in the embodiments of the apparatus of the present invention, please refer to the description of the embodiments of the method of the present invention.
It should be noted that, in the embodiment of the present invention, if the method is implemented in the form of a software functional module, and sold or used as a separate product, the method may also be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present invention may be embodied essentially or in part in the form of a software product stored in a storage medium, including instructions for causing a computer device (which may be a terminal, a server, etc.) to perform all or part of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read Only Memory (ROM), a magnetic disk, an optical disk, or other various media capable of storing program codes. Thus, embodiments of the invention are not limited to any specific combination of hardware and software.
In some embodiments, the functions or modules included in the apparatus provided by the embodiments of the present invention may be used to perform the methods described in the foregoing method embodiments, and specific implementations thereof may refer to descriptions of the foregoing method embodiments, which are not repeated herein for brevity.
Based on the same technical concept as the foregoing embodiments, referring to fig. 5, an electronic device 500 provided in an embodiment of the present invention may include: a memory 501 and a processor 502; wherein,
a memory 501 for storing computer programs and data;
a processor 502 for executing a computer program stored in a memory to implement the control method of any one of the air conditioners of the foregoing embodiments.
In practical applications, the memory 501 may be a volatile memory (RAM); or a non-volatile memory (non-volatile memory), such as ROM, flash memory (flash memory), hard Disk (HDD) or Solid State Drive (SSD); or a combination of the above types of memory and provides instructions and data to the processor 502.
Correspondingly, the embodiment of the invention further provides an air conditioner, which comprises the control device or the electronic equipment of the air conditioner, and can be used for realizing any control method of the air conditioner.
The foregoing description of the various embodiments is intended to emphasize the differences between the various embodiments, and the same or similar parts thereof may be referred to each other for brevity and will not be repeated herein.
The methods disclosed in the method embodiments provided by the invention can be arbitrarily combined under the condition of no conflict to obtain a new method embodiment.
The features disclosed in the embodiments of the products provided by the invention can be combined arbitrarily under the condition of no conflict to obtain new embodiments of the products.
The features disclosed in the embodiments of the method or the device provided by the invention can be arbitrarily combined under the condition of no conflict to obtain a new embodiment of the method or the device.
In the several embodiments provided by the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above described device embodiments are merely illustrative, and exemplary, the division of units is merely a logical function division, and there may be other manners of division in actual implementation, such as: multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. In addition, the various components shown or discussed may be coupled or directly coupled or communicatively coupled to each other via some interface, whether indirectly coupled or communicatively coupled to a device or unit, whether electrically, mechanically, or otherwise.
The units described above as separate components may or may not be physically separate, and components displayed as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of grid units; the object of the present embodiment can be achieved according to the fact that some or all of the units thereof can be selected.
In addition, each functional unit in each embodiment of the present invention may be integrated in one processing module, or each unit may be separately used as one unit, or two or more units may be integrated in one unit; the integrated units may be implemented in hardware or in hardware plus software functional units.
Those of ordinary skill in the art will appreciate that: all or part of the steps of implementing the above method embodiments may be implemented by hardware associated with program instructions, and the above program may be stored in a computer readable storage medium, which when executed, performs steps including the above method embodiments.
The above description is not intended to limit the scope of the invention, but is intended to cover any modifications, equivalents, and improvements within the spirit and principles of the invention.

Claims (12)

1. A control method of an air conditioner, the air conditioner comprising: the device comprises a first indoor heat exchanger, a second indoor heat exchanger and a control valve for controlling the flow of refrigerant in the second indoor heat exchanger; the method comprises the following steps:
controlling the control valve to close or reduce the flow of refrigerant through the second indoor heat exchanger;
acquiring the coil temperature of the first indoor heat exchanger;
the coil temperature is less than a first threshold value, and the control valve is controlled to open or increase the flow of refrigerant through the second indoor heat exchanger.
2. The method of claim 1, wherein the air conditioner further comprises: electronic expansion valves for regulating the flow of refrigerant in the first and second indoor heat exchangers; when the coil temperature is less than a first threshold, further comprising: and reducing the opening degree of the electronic expansion valve.
3. The method of claim 1, wherein the air conditioner further comprises: a compressor; when the coil temperature is less than a first threshold, further comprising:
reducing the operating frequency of the compressor to a first operating frequency;
and controlling the compressor to operate according to the first operating frequency.
4. The method of claim 1, wherein the air conditioner further comprises: a first air outlet for supplying air to the upper part of the air conditioner and a second air outlet for supplying air to the lower part of the air conditioner; the first air outlet is connected with the first indoor heat exchanger, and the second air outlet is connected with the second indoor heat exchanger.
5. The method of claim 1, wherein said controlling said control valve to open or increase refrigerant flow through said second indoor heat exchanger further comprises:
re-acquiring the coil temperature of the first indoor heat exchanger;
the re-acquired coil temperature is greater than a second threshold, and the control valve is controlled to close or reduce the flow of the refrigerant passing through the second indoor heat exchanger; wherein the second threshold is greater than the first threshold.
6. The method of claim 5, wherein the air conditioner further comprises: electronic expansion valves for regulating the flow of refrigerant in the first and second indoor heat exchangers; when the retrieved coil temperature is greater than a second threshold, further comprising: and increasing the opening degree of the electronic expansion valve.
7. The method of claim 5, wherein the air conditioner further comprises: a compressor; when the retrieved coil temperature is greater than a second threshold, further comprising:
raising the operating frequency of the compressor to a second operating frequency;
the compressor is controlled to operate at a second operating frequency.
8. The method according to any one of claims 1 to 7, wherein the control valve comprises: a flow regulating valve or a solenoid valve.
9. A control device of an air conditioner, the air conditioner comprising: the device comprises a first indoor heat exchanger, a second indoor heat exchanger and a control valve for controlling the flow of refrigerant in the second indoor heat exchanger; the device comprises at least:
a first control module for controlling the control valve to close or reduce the flow of refrigerant through the second indoor heat exchanger;
the acquisition module is used for acquiring the coil temperature of the first indoor heat exchanger;
and the second control module is used for controlling the opening of the control valve or increasing the flow of the refrigerant passing through the second indoor heat exchanger when the temperature of the coil pipe is smaller than a first threshold value.
10. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the method of controlling an air conditioner according to any one of claims 1 to 8 when the program is executed.
11. An air conditioner characterized in that it comprises the control device of an air conditioner according to claim 9 or the electronic apparatus according to claim 10.
12. A computer storage medium storing a computer program; characterized in that the computer program, when executed, is capable of implementing the control method of an air conditioner according to any one of claims 1-8.
CN202210472182.7A 2022-04-29 2022-04-29 Air conditioner control method and device, air conditioner, equipment and medium Pending CN117006633A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210472182.7A CN117006633A (en) 2022-04-29 2022-04-29 Air conditioner control method and device, air conditioner, equipment and medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210472182.7A CN117006633A (en) 2022-04-29 2022-04-29 Air conditioner control method and device, air conditioner, equipment and medium

Publications (1)

Publication Number Publication Date
CN117006633A true CN117006633A (en) 2023-11-07

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Country Status (1)

Country Link
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