CN117433101B - Air conditioner control method and device and air conditioner system - Google Patents

Air conditioner control method and device and air conditioner system Download PDF

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Publication number
CN117433101B
CN117433101B CN202311728189.1A CN202311728189A CN117433101B CN 117433101 B CN117433101 B CN 117433101B CN 202311728189 A CN202311728189 A CN 202311728189A CN 117433101 B CN117433101 B CN 117433101B
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China
Prior art keywords
air conditioner
temperature
current moment
opening
expansion valve
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CN202311728189.1A
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Chinese (zh)
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CN117433101A (en
Inventor
何贞艳
郭凯
赖孝成
温加志
葛小婷
张城
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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Priority to CN202311728189.1A priority Critical patent/CN117433101B/en
Publication of CN117433101A publication Critical patent/CN117433101A/en
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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
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32—Responding to malfunctions or emergencies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/88—Electrical aspects, e.g. 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
    • 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
    • F24F2110/12—Temperature of the outside air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/20—Heat-exchange fluid 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

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The application provides a control method, a device and an air conditioning system of an air conditioner, wherein whether the opening of an electronic expansion valve is to be increased or not is determined by considering the temperature and the operation time length of an inner pipe, and under the condition that the temperature of the inner pipe at the current moment is larger than or equal to the overload protection temperature and the operation time length of the air conditioner at the current moment is smaller than a time length threshold value, the opening of the electronic expansion valve of the air conditioner is adjusted to be the sum of the opening of the electronic expansion valve at the current moment and a first opening correction value, so that the flow of a refrigerant is controlled to control and adjust the temperature of the inner pipe of an evaporator of the air conditioner, the compressor is prevented from frequent protection stoppage under the heating overload working condition, and the problem that the service life of the air conditioner is reduced due to frequent protection after the protection temperature is reached in the prior scheme is solved.

Description

Air conditioner control method and device and air conditioner system
Technical Field
The application relates to the technical field of air conditioners, in particular to a control method and device of an air conditioner and an air conditioning system.
Background
In order to meet the comfort of the body, under the high-temperature working condition (an outer ring at 18-30 ℃), the heating condition of an air conditioner is more and more common, and then feedback of after-sales problems possibly occurs, the air conditioner is mainly concentrated to frequently protect and stop in a short time after starting and running, so that the comfort experience is poor, and meanwhile, the reliability running and the service life of the air conditioner are influenced by frequent starting and stopping of a compressor.
In addition, when the air conditioner heats and is overloaded, the service life of the air conditioner is reduced due to frequent protection after the protection temperature is reached.
Disclosure of Invention
The application mainly aims to provide a control method and device of an air conditioner and an air conditioning system, which at least solve the problem that the service life of the air conditioner is reduced due to frequent protection after reaching a protection temperature when the air conditioner heats and is overloaded in the prior art.
In order to achieve the above object, according to one aspect of the present application, there is provided a control method of an air conditioner, the method comprising: acquiring the temperature of an inner tube of an evaporator of the air conditioner at the current moment and the running time of the air conditioner at the current moment in real time, wherein the running time of the air conditioner at the current moment is the running time of the air conditioner in the process from starting up to the current moment; and adjusting the opening of the electronic expansion valve of the air conditioner to be the sum of the opening of the electronic expansion valve at the current moment and a first opening correction value under the condition that the temperature of the inner pipe at the current moment is larger than or equal to the overload protection temperature and the running duration of the air conditioner at the current moment is smaller than a duration threshold value.
Optionally, before adjusting the opening of the electronic expansion valve of the air conditioner to be the sum of the opening of the electronic expansion valve at the current moment and the first opening correction value, the method further includes:
determining a valve change rate from Δp= (T-Tx)/(Tb-Tx);
Determining the first opening correction value based on pm1=a× (1+Δp) ×ps;
wherein PM1 is the first opening correction value, a is a preset coefficient, Δp is a valve change rate, ps is the opening of the electronic expansion valve at the current time, T is the temperature of the inner tube at the current time, tb is the overload protection temperature, and Tx is a frequency limiting temperature.
Optionally, before acquiring the temperature of the inner tube of the evaporator of the air conditioner at the current moment and the running time of the air conditioner at the current moment in real time, the method further comprises: acquiring a plurality of exhaust temperatures, a plurality of inner ring temperatures and a plurality of outer ring temperatures of the air conditioner in a historical time period, wherein the inner ring temperatures are temperatures of indoor environments where an inner machine of the air conditioner is positioned, and the outer ring temperatures are temperatures of outdoor environments where an outer machine of the air conditioner is positioned; and determining the overload protection temperature as a difference value between the maximum value of all the exhaust temperatures of the air conditioner in the historical time period and an internal-external temperature difference, wherein the internal-external temperature difference is a difference value between the average value of all the inner ring temperatures of the air conditioner in the historical time period and the average value of all the outer ring temperatures of the air conditioner in the historical time period.
Optionally, after acquiring the temperature of the inner tube of the evaporator of the air conditioner at the current moment and the running time of the air conditioner at the current moment in real time, the method further comprises: controlling the air conditioner to stop under the condition that the temperature of the inner pipe at the current moment is greater than or equal to the overload protection temperature and the running time of the air conditioner at the current moment is greater than or equal to the time threshold; acquiring the exhaust temperature of the air conditioner at the current moment under the condition that the temperature of the inner pipe at the current moment is smaller than the overload protection temperature; controlling the air conditioner to continue to operate under the condition that the exhaust temperature of the air conditioner at the current moment is smaller than a target exhaust threshold value; and adjusting the opening of the electronic expansion valve to be the maximum opening under the condition that the exhaust temperature of the air conditioner at the current moment is greater than or equal to the target exhaust threshold.
Optionally, after acquiring the exhaust temperature of the air conditioner at the current moment, the method further includes: acquiring the running frequency, the inner ring temperature and the outer ring temperature of the air conditioner at the current moment, wherein the inner ring temperature is the temperature of the indoor environment where the inner machine of the air conditioner is positioned, and the outer ring temperature is the temperature of the outdoor environment where the outer machine of the air conditioner is positioned; and determining the target exhaust threshold according to the operating frequency of the air conditioner at the current moment, the inner ring temperature of the air conditioner at the current moment and the outer ring temperature of the air conditioner at the current moment and a threshold mapping relation, wherein the threshold mapping relation is a mapping relation between an exhaust threshold and the operating frequency, the inner ring temperature and the outer ring temperature.
Optionally, after adjusting the opening of the electronic expansion valve to the maximum opening, the method further includes: after a preset time period, acquiring the exhaust temperature of the air conditioner at the current moment again; and controlling the air conditioner to stop under the condition that the exhaust temperature of the air conditioner at the current moment is greater than or equal to the target exhaust threshold value, and generating alarm information to remind the air conditioner of needing maintenance.
Optionally, before acquiring the temperature of the inner tube of the evaporator of the air conditioner at the current moment and the running time of the air conditioner at the current moment in real time, the method further comprises: acquiring a plurality of exhaust temperatures and a plurality of outer ring temperatures of the air conditioner in a historical time period, wherein the outer ring temperatures are temperatures of outdoor environments where an outer machine of the air conditioner is positioned; and determining the frequency limiting temperature as a difference value between the maximum value of all the exhaust temperatures of the air conditioner in the historical time period and the average value of all the outer ring temperatures of the air conditioner in the historical time period.
Optionally, after adjusting the opening of the electronic expansion valve of the air conditioner to be the sum of the opening of the electronic expansion valve at the current moment and the first opening correction value, the method further includes: when the temperature of the inner pipe at the current moment is greater than or equal to the frequency limiting temperature and the temperature of the inner pipe at the current moment is less than the overload protection temperature, adjusting the opening of the electronic expansion valve to be the sum of the opening of the electronic expansion valve at the current moment and a second opening correction value, wherein the second opening correction value is greater than the first opening correction value; controlling the opening degree of the electronic expansion valve to be kept at the current moment under the condition that the temperature of the inner pipe at the current moment is smaller than the frequency limiting temperature; and adjusting the opening of the electronic expansion valve to be the sum of the opening of the electronic expansion valve at the current moment and the first opening correction value under the condition that the temperature of the inner pipe at the current moment is greater than or equal to the overload protection temperature.
Optionally, before adjusting the opening of the electronic expansion valve to be the sum of the opening of the electronic expansion valve at the current time and the second opening correction value, the method further includes: determining the second opening correction value according to pm2= (1+Δp) ×ps; wherein PM2 is the second opening correction value, Δp is a valve change rate, and Ps is the opening of the electronic expansion valve at the current time.
According to another aspect of the present application, there is provided a control apparatus of an air conditioner, the apparatus including:
the first acquisition unit is used for acquiring the temperature of an inner tube of an evaporator of the air conditioner at the current moment and the running time of the air conditioner at the current moment in real time, wherein the running time of the air conditioner at the current moment is the running time of the air conditioner in the process from starting up to the current moment;
And the first processing unit is used for adjusting the opening of the electronic expansion valve of the air conditioner to be the sum of the opening of the electronic expansion valve at the current moment and a first opening correction value under the condition that the temperature of the inner pipe at the current moment is larger than or equal to the overload protection temperature and the running duration of the air conditioner at the current moment is smaller than a duration threshold value.
According to another aspect of the present application, there is provided an air conditioning system including: one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs comprising instructions for executing any one of the air conditioning systems.
By adopting the technical scheme, whether the opening of the electronic expansion valve is to be increased or not is determined by considering the temperature of the inner pipe and the operation time length, and under the condition that the temperature of the inner pipe at the current moment is greater than or equal to the overload protection temperature and the operation time length of the air conditioner at the current moment is smaller than the time length threshold value, the opening of the electronic expansion valve of the air conditioner is adjusted to be the sum of the opening of the electronic expansion valve at the current moment and the first opening correction value, so that the refrigerant flow is controlled to control and adjust the temperature of the inner pipe of the air conditioner evaporator, frequent protection shutdown does not occur under the heating overload working condition of the compressor, and the problem that the service life of the air conditioner is reduced due to frequent protection after the protection temperature is reached in the prior scheme is solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
Fig. 1 is a block diagram showing a hardware configuration of a mobile terminal performing a control method of an air conditioner according to an embodiment of the present application;
Fig. 2 is a schematic flow chart of a control method of an air conditioner according to an embodiment of the present application;
fig. 3 is a flowchart illustrating another control method of an air conditioner according to an embodiment of the present application;
Fig. 4 is a schematic flow chart of additional control logic in another control method of an air conditioner according to an embodiment of the present application;
Fig. 5 shows a block diagram of a control apparatus of an air conditioner according to an embodiment of the present application.
Detailed Description
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the embodiments of the application herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
As introduced in the background art, in order to meet comfort of body feeling, under a high-temperature working condition (an outer ring at 18-30 ℃), the condition of heating by using an air conditioner is more and more common, and then feedback of after-sales problems possibly occurs, and the feedback is mainly concentrated to frequently protect shutdown in a short time after starting and running, so that comfort experience is poor, and meanwhile, the reliability operation and the service life of the air conditioner are affected by frequent starting and stopping of a compressor. In addition, when the air conditioner is in heating overload, the service life of the air conditioner is reduced due to frequent protection after the protection temperature is reached, and the problem that the service life of the air conditioner is reduced due to frequent protection after the protection temperature is reached when the air conditioner is in heating overload in the conventional scheme is solved.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
The method embodiments provided in the embodiments of the present application may be performed in a mobile terminal, a computer terminal or similar computing device. Taking a mobile terminal as an example, fig. 1 is a block diagram of a hardware structure of the mobile terminal according to a control method of an air conditioner according to an embodiment of the present application. As shown in fig. 1, a mobile terminal may include one or more (only one is shown in fig. 1) processors 102 (the processor 102 may include, but is not limited to, a microprocessor MCU or a processing device such as a programmable logic device FPGA) and a memory 104 for storing data, wherein the mobile terminal may also include a transmission device 106 for communication functions and an input-output device 108. It will be appreciated by those skilled in the art that the structure shown in fig. 1 is merely illustrative and not limiting of the structure of the mobile terminal described above. For example, the mobile terminal may also include more or fewer components than shown in fig. 1, or have a different configuration than shown in fig. 1.
The memory 104 may be used to store a computer program, for example, a software program of application software and a module, such as a computer program corresponding to a control method of an air conditioner in an embodiment of the present invention, and the processor 102 executes the computer program stored in the memory 104 to perform various functional applications and data processing, that is, to implement the above-mentioned method. Memory 104 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include memory remotely located relative to the processor 102, which may be connected to the mobile terminal via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof. The transmission device 106 is used to receive or transmit data via a network. Specific examples of the network described above may include a wireless network provided by a communication provider of the mobile terminal. In one example, the transmission device 106 includes a network adapter (Network Interface Controller, simply referred to as a NIC) that can connect to other network devices through a base station to communicate with the internet. In one example, the transmission device 106 may be a Radio Frequency (RF) module, which is configured to communicate with the internet wirelessly.
In the present embodiment, a control method of an air conditioner operating on a mobile terminal, a computer terminal, or the like is provided, and it is to be noted that the steps shown in the flowchart of the drawings may be executed in a computer system such as a set of computer executable instructions, and that although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in an order different from that shown or described herein.
Fig. 2 is a flowchart illustrating a control method of an air conditioner according to an embodiment of the present application. As shown in fig. 2, the method comprises the steps of:
step S201, acquiring the temperature of an inner tube of an evaporator of the air conditioner at the current moment and the running time of the air conditioner at the current moment in real time, wherein the running time of the air conditioner at the current moment is the running time of the air conditioner in the process from starting up to the current moment;
Specifically, the protection is judged when the air conditioner heats and is overloaded by considering the temperature of the inner tube of the evaporator of the air conditioner at the current moment and the running time of the air conditioner at the current moment, so that the service life of the air conditioner can be effectively protected;
before step S201, that is, before acquiring, in real time, the temperature of the inner tube of the evaporator of the air conditioner at the current time and the operation duration of the air conditioner at the current time, the method further includes:
acquiring a plurality of exhaust temperatures, a plurality of inner ring temperatures and a plurality of outer ring temperatures of the air conditioner in a historical time period, wherein the inner ring temperatures are temperatures of indoor environments where inner machines of the air conditioner are located, and the outer ring temperatures are temperatures of outdoor environments where outer machines of the air conditioner are located;
And determining the overload protection temperature as a difference between a maximum value of all the exhaust temperatures of the air conditioner in the history period and an internal and external temperature difference, wherein the internal and external temperature difference is a difference between an average value of all the inner ring temperatures of the air conditioner in the history period and an average value of all the outer ring temperatures of the air conditioner in the history period.
Specifically, by taking the difference between the maximum value of all the exhaust temperatures and the difference between the internal temperature and the external temperature in the historical time period as the overload protection temperature, the inner ring temperature, the outer ring temperature and the exhaust temperature can be taken into consideration, and the temperature changes of the outer ring temperature and the inner ring temperature are more gentle compared with the exhaust temperature, so that the average value is obtained, and the maximum value can more effectively represent the overload condition of the air conditioner when the exhaust temperature changes to a larger degree.
After step S201, that is, after acquiring, in real time, the temperature of the inner tube of the evaporator of the air conditioner at the current time and the operation duration of the air conditioner at the current time, the method further includes:
Controlling the air conditioner to stop under the condition that the temperature of the inner pipe at the current moment is greater than or equal to the overload protection temperature and the running time of the air conditioner at the current moment is greater than or equal to the time threshold;
Specifically, under the condition that the temperature of the inner pipe at the current moment is greater than or equal to the overload protection temperature and the running time of the air conditioner at the current moment is greater than or equal to the time threshold, determining that the air conditioner is in a heating overload state, and controlling the air conditioner to stop to protect the air conditioner.
Acquiring the exhaust temperature of the air conditioner at the current moment under the condition that the temperature of the inner pipe at the current moment is smaller than the overload protection temperature;
After the exhaust temperature of the air conditioner at the current moment is obtained, the method further comprises the following steps: acquiring the running frequency, the inner ring temperature and the outer ring temperature of the air conditioner at the current moment, wherein the inner ring temperature is the temperature of the indoor environment where the inner machine of the air conditioner is positioned, and the outer ring temperature is the temperature of the outdoor environment where the outer machine of the air conditioner is positioned; and determining the target exhaust threshold according to the operating frequency of the air conditioner at the current moment, the inner ring temperature of the air conditioner at the current moment and the outer ring temperature of the air conditioner at the current moment and a threshold mapping relation, wherein the threshold mapping relation is a mapping relation between an exhaust threshold and the operating frequency, the inner ring temperature and the outer ring temperature.
Specifically, by setting the mapping relation between the exhaust threshold and the operating frequency, the inner ring temperature and the outer ring temperature, the exhaust threshold corresponding to the operating frequency, the inner ring temperature and the outer ring temperature of the air conditioner at the current moment can be found from the threshold mapping relation according to the operating frequency, the inner ring temperature and the outer ring temperature of the air conditioner at the current moment, so that the accuracy of subsequent judgment is improved.
Controlling the air conditioner to continue to operate under the condition that the exhaust temperature of the air conditioner at the current moment is smaller than a target exhaust threshold value; and adjusting the opening of the electronic expansion valve to a maximum opening when the exhaust temperature of the air conditioner at the current time is greater than or equal to the target exhaust threshold.
Specifically, under the condition that the temperature of the inner pipe at the current moment is smaller than the overload protection temperature, whether the air conditioner is continuously operated or the opening of the electronic expansion valve of the air conditioner is regulated is determined according to the exhaust temperature, under the condition that the exhaust temperature of the air conditioner at the current moment is smaller than the target exhaust threshold value, the air conditioner is free of overload risk, the air conditioner is continuously operated, under the condition that the exhaust temperature of the air conditioner at the current moment is greater than or equal to the target exhaust threshold value, the opening of the electronic expansion valve is determined to be increased, so that the refrigerant flow is regulated to control and regulate the temperature of the inner pipe of the evaporator of the air conditioner, and frequent protection shutdown of the compressor is avoided under the heating overload working condition. The time of the exhaust temperature of the air conditioner at the current time and the time of acquiring the temperature of the inner tube of the evaporator of the air conditioner at the current time in real time are not necessarily the same time.
In one embodiment of the present application, after adjusting the opening degree of the electronic expansion valve to the maximum opening degree, the method further includes: after a preset time period, acquiring the exhaust temperature of the air conditioner at the current moment again; and under the condition that the exhaust temperature of the air conditioner at the current moment is greater than or equal to the target exhaust threshold value, controlling the air conditioner to stop, and generating alarm information to remind the air conditioner of needing maintenance.
Specifically, after a preset period of time, the time when the exhaust temperature of the air conditioner at the current time is obtained again is not the same time when the exhaust temperature of the air conditioner at the current time is obtained before, the preset period of time may be 3min, after this time, if the exhaust temperature of the air conditioner at the current time is still greater than or equal to the target exhaust threshold value, it is determined that the opening degree of the electronic expansion valve is regulated so as to be incapable of relieving the heating overload state of the air conditioner, and the air conditioner needs to be stopped to relieve the overload state, and if the exhaust temperature of the air conditioner at the current time is still less than or equal to the target exhaust threshold value, the air conditioner has no overload risk, so that the air conditioner can continue to operate.
Before step S201, that is, before acquiring, in real time, the temperature of the inner tube of the evaporator of the air conditioner at the current time and the operation duration of the air conditioner at the current time, the method further includes: acquiring a plurality of exhaust temperatures and a plurality of outer ring temperatures of the air conditioner in a historical time period, wherein the outer ring temperatures are temperatures of outdoor environments where an outer machine of the air conditioner is positioned; and determining the frequency limiting temperature as a difference between the maximum value of all the exhaust temperatures of the air conditioner in the history period and the average value of all the outer ring temperatures of the air conditioner in the history period.
Specifically, the frequency limiting temperature is determined through the exhaust temperature and the outer ring temperature, so that the follow-up judgment on whether to continue to increase the opening of the electronic expansion valve can be more accurate.
In one embodiment of the present application, after adjusting the opening of the electronic expansion valve of the air conditioner to a sum of the opening of the electronic expansion valve at the current time and the first opening correction value, the method further includes:
when the temperature of the inner pipe at the current time is greater than or equal to the frequency limiting temperature and the temperature of the inner pipe at the current time is less than the overload protection temperature, adjusting the opening of the electronic expansion valve to be the sum of the opening of the electronic expansion valve at the current time and a second opening correction value, wherein the second opening correction value is greater than the first opening correction value;
Specifically, when the temperature of the inner tube at the present time is different from the temperature of the inner tube at the present time obtained in step S201, and when the temperature of the inner tube at the present time is greater than or equal to the frequency limit temperature and the temperature of the inner tube at the present time is less than the overload protection temperature, it is determined that the opening degree of the electronic expansion valve needs to be continuously increased by the second opening degree correction value greater than the first opening degree correction value, that is, the opening degree of the electronic expansion valve is adjusted to be the sum of the opening degree of the electronic expansion valve at the present time and the second opening degree correction value, that is, the opening degree of the electronic expansion valve is adjusted to be 20%, and the opening degree of the electronic expansion valve needs to be adjusted to be 15%, in other words, the opening degree of the electronic expansion valve needs to be adjusted to be 15% and the second opening degree correction value, in order to avoid the occurrence of frequency-reducing (avoid occurrence of excessive noise abnormality problem due to the occurrence frequency-reducing the shielding point), and the system flow rate is still needed to be adjusted, for example, the opening degree of the electronic expansion valve at the present time is 20%, the opening degree of the electronic expansion valve at the initial time (i.e., the opening degree of the initial state) is 10%, and the first opening degree correction value is 10%, and the opening degree of the electronic expansion valve is adjusted to be 20%.
Wherein before adjusting the opening degree of the electronic expansion valve to the sum of the opening degree of the electronic expansion valve at the current time and the second opening degree correction value, the method further includes: determining the second opening correction value from pm2= (1+Δp) ×ps; wherein PM2 is the second opening correction value, Δp is a valve change rate, and Ps is the opening of the electronic expansion valve at the current time;
specifically, PM2 is greater than PM1, and the valve change rate is changed in real time, so that the valve can be more suitable for the actual working condition, and the electronic expansion valve can be more accurately regulated.
Controlling the opening degree of the electronic expansion valve to be kept at the current moment under the condition that the temperature of the inner pipe at the current moment is smaller than the frequency limiting temperature; and when the temperature of the inner pipe at the current moment is greater than or equal to the overload protection temperature, adjusting the opening of the electronic expansion valve to be the sum of the opening of the electronic expansion valve at the current moment and the first opening correction value.
Specifically, when the temperature of the inner tube at the present time is lower than the frequency limit temperature, the opening degree at the present time may be maintained, and when the temperature of the inner tube at the present time is higher than or equal to the overload protection temperature, it is necessary to further increase the opening degree of the electronic expansion valve by using a first opening degree correction value, for example, the opening degree of the electronic expansion valve at the present time is 20%, the opening degree of the electronic expansion valve at the initial time (i.e., the opening degree of the initial state) is 10%, the first opening degree correction value is 10%, the opening degree of the electronic expansion valve at the present time is 20%, and the opening degree of the electronic expansion valve is adjusted to the sum of the opening degree of the electronic expansion valve at the present time and the first opening degree correction value, that is, the opening degree of the electronic expansion valve is required to be adjusted to the sum of 20% and 10%, that is, it is required to be adjusted to 30%.
Step S202, when the temperature of the inner pipe at the current time is greater than or equal to the overload protection temperature and the operation duration of the air conditioner at the current time is less than the duration threshold, adjusting the opening of the electronic expansion valve of the air conditioner to be the sum of the opening of the electronic expansion valve at the current time and the first opening correction value.
In the device, whether the opening of the electronic expansion valve is to be increased or not is determined by considering the temperature of the inner pipe and the operation time length, and when the temperature of the inner pipe at the current moment is greater than or equal to the overload protection temperature and the operation time length of the air conditioner at the current moment is smaller than the time length threshold value, the opening of the electronic expansion valve of the air conditioner is adjusted to be the sum of the opening of the electronic expansion valve at the current moment and the first opening correction value, so that the refrigerant flow is controlled to control and adjust the temperature of the inner pipe of the air conditioner evaporator, frequent protection shutdown of the compressor does not occur under the heating overload working condition, and the problem that the service life of the air conditioner is reduced due to frequent protection after the protection temperature is reached in the prior art is solved.
Before step S202, that is, before adjusting the opening of the electronic expansion valve of the air conditioner to the sum of the opening of the electronic expansion valve at the current time and the first opening correction value, the method further includes:
determining a valve change rate from Δp= (T-Tx)/(Tb-Tx);
Determining the first opening correction value based on pm1=a× (1+Δp) ×ps;
wherein PM1 is the first opening correction value, a is a preset coefficient, Δp is a valve change rate, ps is the opening of the electronic expansion valve at the current time, T is the temperature of the inner tube at the current time, tb is the overload protection temperature, and Tx is a frequency limiting temperature.
Specifically, the value range of a is any value between 0 and 1, and the valve change rate is changed in real time, so that the valve can be more suitable for the actual working condition, and the electronic expansion valve can be more accurately regulated.
In order to enable those skilled in the art to more clearly understand the technical solution of the present application, the implementation process of the control method of the air conditioner of the present application will be described in detail with reference to specific embodiments.
The embodiment relates to a specific control method of an air conditioner, as shown in fig. 3, including the following steps:
Step S1: acquiring the temperature T of an inner tube of an evaporator of the air conditioner at the current moment and the running time T of the air conditioner at the current moment in real time, wherein the running time of the air conditioner at the current moment is the running time of the air conditioner in the process from starting up to the current moment;
Step S2: controlling the air conditioner to stop under the condition that the temperature T of the inner pipe at the current moment is greater than or equal to the overload protection temperature Tb and the running time T of the air conditioner at the current moment is greater than or equal to the time threshold tm; performing additional control logic under the condition that the temperature T of the inner pipe at the current moment is smaller than the overload protection temperature Tb; when the temperature T of the inner pipe at the current moment is greater than or equal to the overload protection temperature Tb and the running time T of the air conditioner at the current moment is smaller than a time threshold tm, adjusting the opening of an electronic expansion valve of the air conditioner to be the sum of the opening of the electronic expansion valve at the current moment and a first opening correction value;
The specific process of executing the additional control logic is as shown in fig. 4, a target exhaust threshold Tm is obtained, an exhaust temperature Tp is obtained in real time, the opening of the electronic expansion valve is adjusted to be the maximum opening value under the condition that the exhaust temperature Tp is greater than or equal to the target exhaust threshold Tm, the electronic expansion valve is controlled to keep the current opening unchanged under the condition that the exhaust temperature Tp is less than the target exhaust threshold Tm, tp and Tm are compared again after 3min, the electronic expansion valve is controlled to keep the current opening unchanged under the condition that the exhaust temperature Tp is less than the target exhaust threshold Tm, and the air conditioner is controlled to stop under the condition that the exhaust temperature Tp is greater than or equal to the target exhaust threshold Tm;
Step S3: when the temperature T of the inner pipe at the current moment is larger than or equal to the frequency limiting temperature Tx and the temperature T of the inner pipe at the current moment is smaller than the overload protection temperature Tb, the opening degree of the electronic expansion valve is adjusted to be the sum of the opening degree of the electronic expansion valve at the current moment and a second opening degree correction value, and the second opening degree correction value is larger than the first opening degree correction value; controlling the electronic expansion valve to maintain the opening degree at the current moment under the condition that the temperature T of the inner pipe at the current moment is smaller than the frequency limiting temperature Tx; when the temperature T of the inner pipe at the current moment is larger than or equal to the overload protection temperature Tb, the opening degree of the electronic expansion valve is adjusted to be the sum of the opening degree of the electronic expansion valve at the current moment and the first opening degree correction value, and the frequency limiting temperature Tx is smaller than the overload protection temperature Tb.
It should be noted that the steps illustrated in the flowcharts of the figures may be performed in a computer system such as a set of computer executable instructions, and that although a logical order is illustrated in the flowcharts, in some cases the steps illustrated or described may be performed in an order other than that illustrated herein.
The embodiment of the application also provides a control device of the air conditioner, and the control device of the air conditioner can be used for executing the control method for the air conditioner. The device is used for realizing the above embodiments and preferred embodiments, and is not described in detail. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. While the means described in the following embodiments are preferably implemented in software, implementation in hardware, or a combination of software and hardware, is also possible and contemplated.
The following describes a control device of an air conditioner provided by an embodiment of the present application.
Fig. 5 is a block diagram of a control device of an air conditioner according to an embodiment of the present application. As shown in fig. 5, the apparatus includes:
A first obtaining unit 41, configured to obtain, in real time, a temperature of an inner tube of an evaporator of the air conditioner at a current time and an operation duration of the air conditioner at the current time, where the operation duration of the air conditioner at the current time is a duration of the air conditioner that has been operated from startup to the current time;
And a first processing unit 42, configured to adjust an opening of an electronic expansion valve of the air conditioner to be a sum of an opening of the electronic expansion valve at a current time and a first opening correction value when a temperature of the inner pipe at the current time is greater than or equal to an overload protection temperature and the operation duration of the air conditioner at the current time is less than a duration threshold.
In the device, whether the opening of the electronic expansion valve is to be increased or not is determined by considering the temperature of the inner pipe and the operation time length, and when the temperature of the inner pipe at the current moment is greater than or equal to the overload protection temperature and the operation time length of the air conditioner at the current moment is smaller than the time length threshold value, the opening of the electronic expansion valve of the air conditioner is adjusted to be the sum of the opening of the electronic expansion valve at the current moment and the first opening correction value, so that the refrigerant flow is controlled to control and adjust the temperature of the inner pipe of the air conditioner evaporator, frequent protection shutdown of the compressor does not occur under the heating overload working condition, and the problem that the service life of the air conditioner is reduced due to frequent protection after the protection temperature is reached in the prior art is solved.
In one embodiment of the present application, the apparatus further comprises a first determining unit and a second determining unit that, before adjusting the opening of the electronic expansion valve of the air conditioner to the sum of the opening of the electronic expansion valve at the current time and the first opening correction value,
The first determining unit is used for determining the valve change rate according to Δp= (T-Tx)/(Tb-Tx);
A second determining unit configured to determine the first opening correction value based on pm1=a× (1+Δp) ×ps;
wherein PM1 is the first opening correction value, a is a preset coefficient, Δp is a valve change rate, ps is the opening of the electronic expansion valve at the current time, T is the temperature of the inner tube at the current time, tb is the overload protection temperature, and Tx is a frequency limiting temperature.
In one embodiment of the present application, the apparatus further includes a second obtaining unit and a third determining unit, where before obtaining, in real time, a temperature of an inner pipe of an evaporator of the air conditioner at a current time and an operation time of the air conditioner at the current time, the second obtaining unit is configured to obtain, in a historical time period, a plurality of exhaust temperatures, a plurality of inner ring temperatures, and a plurality of outer ring temperatures of the air conditioner, where the inner ring temperatures are temperatures of an indoor environment where an inner machine of the air conditioner is located, and the outer ring temperatures are temperatures of an outdoor environment where an outer machine of the air conditioner is located; and a third determining unit configured to determine that the overload protection temperature is a difference between a maximum value of all the exhaust temperatures of the air conditioner in the history period and an inside-outside temperature difference, the inside-outside temperature difference being a difference between an average value of all the inner ring temperatures of the air conditioner in the history period and an average value of all the outer ring temperatures of the air conditioner in the history period.
In one embodiment of the present application, the apparatus further includes a second processing unit, a third obtaining unit, a third processing unit, and a fourth processing unit, where after obtaining, in real time, a temperature of an inner tube of an evaporator of the air conditioner at a current time and an operation duration of the air conditioner at the current time, the second processing unit is configured to control the air conditioner to stop when the temperature of the inner tube at the current time is greater than or equal to the overload protection temperature and the operation duration of the air conditioner at the current time is greater than or equal to the duration threshold; the third acquisition unit is used for acquiring the exhaust temperature of the air conditioner at the current moment under the condition that the temperature of the inner pipe at the current moment is smaller than the overload protection temperature; the third processing unit is used for controlling the air conditioner to continue to operate under the condition that the exhaust temperature of the air conditioner at the current moment is smaller than a target exhaust threshold value; the fourth processing unit is configured to adjust an opening degree of the electronic expansion valve to a maximum opening degree when the discharge temperature of the air conditioner at the current time is equal to or higher than the target discharge threshold value.
In one embodiment of the present application, the apparatus further includes a fourth obtaining unit and a fourth determining unit, where after obtaining the exhaust temperature of the air conditioner at the current time, the fourth obtaining unit is configured to obtain an operating frequency of the air conditioner at the current time, an inner ring temperature, and an outer ring temperature, where the inner ring temperature is a temperature of an indoor environment where an inner machine of the air conditioner is located, and the outer ring temperature is a temperature of an outdoor environment where an outer machine of the air conditioner is located; the fourth determining unit is configured to determine the target exhaust threshold according to the operating frequency of the air conditioner at the current time, the inner ring temperature of the air conditioner at the current time, and the outer ring temperature of the air conditioner at the current time, and a threshold mapping relationship, where the threshold mapping relationship is a mapping relationship between an exhaust threshold and the operating frequency, and the inner ring temperature and the outer ring temperature.
In one embodiment of the present application, the apparatus further includes a fifth obtaining unit and a generating unit, where the fifth obtaining unit is configured to obtain the exhaust temperature of the air conditioner at the current time again after a preset period of time elapses after the opening degree of the electronic expansion valve is adjusted to the maximum opening degree; the generating unit is used for controlling the air conditioner to stop and generating alarm information to remind the air conditioner of needing maintenance under the condition that the exhaust temperature of the air conditioner at the current moment is greater than or equal to the target exhaust threshold value.
In one embodiment of the present application, the apparatus further includes a sixth obtaining unit and a fifth determining unit, where the sixth obtaining unit is configured to obtain, in real time, a plurality of exhaust temperatures and a plurality of outer ring temperatures of the air conditioner in a historical period of time, before obtaining, in real time, a temperature of an inner pipe of an evaporator of the air conditioner at a current time and an operation duration of the air conditioner at the current time, the outer ring temperatures being temperatures of an outdoor environment in which an outer machine of the air conditioner is located; and a fifth determining unit for determining that the frequency-limited temperature is a difference between a maximum value of all the exhaust temperatures of the air conditioner in the history period and an average value of all the outer ring temperatures of the air conditioner in the history period.
In one embodiment of the present application, the apparatus further includes a sixth processing unit, a seventh processing unit, and an eighth processing unit, wherein after adjusting the opening of the electronic expansion valve of the air conditioner to a sum of the opening of the electronic expansion valve at the current time and a first opening correction value, the sixth processing unit is configured to adjust the opening of the electronic expansion valve to a sum of the opening of the electronic expansion valve at the current time and a second opening correction value, the second opening correction value being larger than the first opening correction value, when the temperature of the inner pipe at the current time is greater than or equal to the frequency-limited temperature and the temperature of the inner pipe at the current time is smaller than the overload protection temperature; the seventh processing unit is used for controlling the opening degree of the electronic expansion valve to be kept at the current moment when the temperature of the inner pipe at the current moment is smaller than the frequency limiting temperature; and the eighth processing unit is used for adjusting the opening degree of the electronic expansion valve to be the sum of the opening degree of the electronic expansion valve at the current moment and the first opening degree correction value when the temperature of the inner pipe at the current moment is greater than or equal to the overload protection temperature.
In one embodiment of the present application, the apparatus further includes a sixth determining unit configured to determine the second opening correction value based on pm2= (1+Δp) x Ps before adjusting the opening of the electronic expansion valve to a sum of the opening of the electronic expansion valve at the current time and the second opening correction value; wherein PM2 is the second opening correction value, Δp is a valve change rate, and Ps is the opening of the electronic expansion valve at the present time.
The control device of the air conditioner comprises a processor and a memory, wherein the first acquisition unit, the first processing unit and the like are stored in the memory as program units, and the processor executes the program units stored in the memory to realize corresponding functions. The modules are all located in the same processor; or the above modules may be located in different processors in any combination.
The processor includes a kernel, and the kernel fetches the corresponding program unit from the memory. The inner core can be provided with one or more than one, and the problem that the service life of the air conditioner is reduced due to the fact that the air conditioner is not protected when the air conditioner is heated and overloaded in the prior art is solved by adjusting the parameters of the inner core.
The memory may include volatile memory, random Access Memory (RAM), and/or nonvolatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM), among other forms in computer readable media, the memory including at least one memory chip.
The embodiment of the invention provides a computer readable storage medium, which comprises a stored program, wherein the program is used for controlling equipment where the computer readable storage medium is located to execute a control method of the air conditioner.
The embodiment of the invention provides a processor, which is used for running a program, wherein the control method of the air conditioner is executed when the program runs.
The embodiment of the invention provides equipment, which comprises a processor, a memory and a program stored in the memory and capable of running on the processor, wherein the processor realizes at least the following steps when executing the program: acquiring the temperature of an inner tube of an evaporator of the air conditioner at the current moment and the running time of the air conditioner at the current moment in real time, wherein the running time of the air conditioner at the current moment is the running time of the air conditioner in the process from starting up to the current moment; and adjusting the opening of the electronic expansion valve of the air conditioner to be the sum of the opening of the electronic expansion valve at the current moment and a first opening correction value under the condition that the temperature of the inner pipe at the current moment is larger than or equal to the overload protection temperature and the running duration of the air conditioner at the current moment is smaller than a duration threshold value. The device herein may be a server, PC, PAD, cell phone, etc.
The application also provides a computer program product adapted to perform, when executed on a data processing device, a program initialized with at least the following method steps: acquiring the temperature of an inner tube of an evaporator of the air conditioner at the current moment and the running time of the air conditioner at the current moment in real time, wherein the running time of the air conditioner at the current moment is the running time of the air conditioner in the process from starting up to the current moment; and adjusting the opening of the electronic expansion valve of the air conditioner to be the sum of the opening of the electronic expansion valve at the current moment and a first opening correction value under the condition that the temperature of the inner pipe at the current moment is larger than or equal to the overload protection temperature and the running duration of the air conditioner at the current moment is smaller than a duration threshold value.
The application also provides an air conditioning system, which comprises: the system comprises one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs comprising instructions for executing any one of the air conditioning systems. Determining whether to increase the opening of the electronic expansion valve by considering the temperature of the inner tube and the operation time length, and adjusting the opening of the electronic expansion valve of the air conditioner to be the sum of the opening of the electronic expansion valve at the current time and the first opening correction value under the condition that the temperature of the inner tube at the current time is larger than or equal to the overload protection temperature and the operation time length of the air conditioner at the current time is smaller than the time length threshold value, thereby controlling the refrigerant flow to control and adjust the temperature of the inner tube of the evaporator of the air conditioner, avoiding frequent protection shutdown of the compressor under the heating overload working condition, and further solving the problem that the service life of the air conditioner is reduced due to frequent protection after the protection temperature is reached in the prior art.
It will be appreciated by those skilled in the art that the modules or steps of the invention described above may be implemented in a general purpose computing device, they may be concentrated on a single computing device, or distributed across a network of computing devices, they may be implemented in program code executable by computing devices, so that they may be stored in a storage device for execution by computing devices, and in some cases, the steps shown or described may be performed in a different order than that shown or described herein, or they may be separately fabricated into individual integrated circuit modules, or multiple modules or steps of them may be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In one typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include volatile memory in a computer-readable medium, random Access Memory (RAM) and/or nonvolatile memory, etc., such as Read Only Memory (ROM) or flash RAM. Memory is an example of a computer-readable medium.
Computer readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of storage media for a computer include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device. Computer-readable media, as defined herein, does not include transitory computer-readable media (transmission media), such as modulated data signals and carrier waves.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, 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 process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.
From the above description, it can be seen that the above embodiments of the present application achieve the following technical effects:
1) According to the control method of the air conditioner, whether the opening of the electronic expansion valve is to be increased or not is determined by considering the temperature of the inner pipe and the operation time length, and when the temperature of the inner pipe at the current moment is greater than or equal to the overload protection temperature and the operation time length of the air conditioner at the current moment is smaller than the time length threshold value, the opening of the electronic expansion valve of the air conditioner is adjusted to be the sum of the opening of the electronic expansion valve at the current moment and the first opening correction value, so that the refrigerant flow is controlled to control and adjust the temperature of the inner pipe of the evaporator of the air conditioner, frequent protection shutdown does not occur under the heating overload working condition of the compressor, and the problem that the service life of the air conditioner is reduced due to frequent protection after the protection temperature is reached in the prior art is solved.
2) According to the control device of the air conditioner, whether the opening degree of the electronic expansion valve is to be increased or not is determined by considering the temperature of the inner pipe and the operation time length, and when the temperature of the inner pipe at the current moment is larger than or equal to the overload protection temperature and the operation time length of the air conditioner at the current moment is smaller than the time length threshold value, the opening degree of the electronic expansion valve of the air conditioner is adjusted to be the sum of the opening degree of the electronic expansion valve at the current moment and the first opening degree correction value, so that the refrigerant flow is controlled to control and adjust the temperature of the inner pipe of the evaporator of the air conditioner, frequent protection stop does not occur under the heating overload working condition of the compressor, and the problem that the service life of the air conditioner is reduced due to frequent protection after the protection temperature is reached in the prior art is solved.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (7)

1. A control method of an air conditioner, comprising:
acquiring the temperature of an inner tube of an evaporator of the air conditioner at the current moment and the running time of the air conditioner at the current moment in real time, wherein the running time of the air conditioner at the current moment is the running time of the air conditioner in the process from starting up to the current moment;
When the temperature of the inner pipe at the current moment is greater than or equal to overload protection temperature and the running time of the air conditioner at the current moment is less than a time threshold, adjusting the opening of an electronic expansion valve of the air conditioner to be the sum of the opening of the electronic expansion valve at the current moment and a first opening correction value;
Before adjusting the opening degree of the electronic expansion valve of the air conditioner to be the sum of the opening degree of the electronic expansion valve at the current moment and the first opening degree correction value, the method further comprises:
determining a valve change rate from Δp= (T-Tx)/(Tb-Tx);
Determining the first opening correction value based on pm1=a× (1+Δp) ×ps;
Wherein PM1 is the first opening correction value, a is a preset coefficient, Δp is a valve change rate, ps is the opening of the electronic expansion valve at the current moment, T is the temperature of the inner pipe at the current moment, tb is the overload protection temperature, and Tx is a frequency limiting temperature;
Before acquiring the temperature of the inner tube of the evaporator of the air conditioner at the current moment and the running time of the air conditioner at the current moment in real time, the method further comprises:
Acquiring a plurality of exhaust temperatures and a plurality of outer ring temperatures of the air conditioner in a historical time period, wherein the outer ring temperatures are temperatures of outdoor environments where an outer machine of the air conditioner is positioned;
Determining a frequency limiting temperature as a difference between a maximum value of all the exhaust temperatures of the air conditioner in the historical time period and an average value of all the outer ring temperatures of the air conditioner in the historical time period;
after adjusting the opening degree of the electronic expansion valve of the air conditioner to be the sum of the opening degree of the electronic expansion valve at the current moment and the first opening degree correction value, the method further comprises:
When the temperature of the inner pipe at the current moment is greater than or equal to the frequency limiting temperature and the temperature of the inner pipe at the current moment is less than the overload protection temperature, adjusting the opening of the electronic expansion valve to be the sum of the opening of the electronic expansion valve at the current moment and a second opening correction value, wherein the second opening correction value is greater than the first opening correction value;
Controlling the opening degree of the electronic expansion valve to be kept at the current moment under the condition that the temperature of the inner pipe at the current moment is smaller than the frequency limiting temperature;
When the temperature of the inner pipe at the current moment is greater than or equal to the overload protection temperature, adjusting the opening of the electronic expansion valve to be the sum of the opening of the electronic expansion valve at the current moment and the first opening correction value;
Before adjusting the opening of the electronic expansion valve to be the sum of the opening of the electronic expansion valve at the current moment and the second opening correction value, the method further comprises:
determining the second opening correction value according to pm2= (1+Δp) ×ps;
Wherein PM2 is the second opening correction value, Δp is a valve change rate, and Ps is the opening of the electronic expansion valve at the current time.
2. The method of claim 1, wherein before acquiring the temperature of the inner tube of the evaporator of the air conditioner at the current time and the operation time of the air conditioner at the current time in real time, the method further comprises:
Acquiring a plurality of exhaust temperatures, a plurality of inner ring temperatures and a plurality of outer ring temperatures of the air conditioner in a historical time period, wherein the inner ring temperatures are temperatures of indoor environments where an inner machine of the air conditioner is positioned, and the outer ring temperatures are temperatures of outdoor environments where an outer machine of the air conditioner is positioned;
and determining the overload protection temperature as a difference value between the maximum value of all the exhaust temperatures of the air conditioner in the historical time period and an internal-external temperature difference, wherein the internal-external temperature difference is a difference value between the average value of all the inner ring temperatures of the air conditioner in the historical time period and the average value of all the outer ring temperatures of the air conditioner in the historical time period.
3. The method according to claim 1, wherein after acquiring the temperature of the inner tube of the evaporator of the air conditioner at the current time and the operation time of the air conditioner at the current time in real time, the method further comprises:
Controlling the air conditioner to stop when the temperature of the inner pipe at the current moment is greater than or equal to the overload protection temperature and the running time of the air conditioner at the current moment is greater than or equal to the time threshold;
Acquiring the exhaust temperature of the air conditioner at the current moment under the condition that the temperature of the inner pipe at the current moment is smaller than the overload protection temperature;
Controlling the air conditioner to continue to operate under the condition that the exhaust temperature of the air conditioner at the current moment is smaller than a target exhaust threshold value;
And adjusting the opening of the electronic expansion valve to be the maximum opening under the condition that the exhaust temperature of the air conditioner at the current moment is greater than or equal to the target exhaust threshold.
4. A method according to claim 3, wherein after obtaining the discharge temperature of the air conditioner at the current time, the method further comprises:
Acquiring the running frequency, the inner ring temperature and the outer ring temperature of the air conditioner at the current moment, wherein the inner ring temperature is the temperature of the indoor environment where the inner machine of the air conditioner is positioned, and the outer ring temperature is the temperature of the outdoor environment where the outer machine of the air conditioner is positioned;
And determining the target exhaust threshold according to the operating frequency of the air conditioner at the current moment, the inner ring temperature of the air conditioner at the current moment and the outer ring temperature of the air conditioner at the current moment and a threshold mapping relation, wherein the threshold mapping relation is a mapping relation between an exhaust threshold and the operating frequency, the inner ring temperature and the outer ring temperature.
5. The method of claim 3, wherein after adjusting the opening of the electronic expansion valve to a maximum opening, the method further comprises:
After a preset time period, acquiring the exhaust temperature of the air conditioner at the current moment again;
And controlling the air conditioner to stop under the condition that the exhaust temperature of the air conditioner at the current moment is greater than or equal to the target exhaust threshold value.
6. A control device of an air conditioner, comprising:
the first acquisition unit is used for acquiring the temperature of an inner tube of an evaporator of the air conditioner at the current moment and the running time of the air conditioner at the current moment in real time, wherein the running time of the air conditioner at the current moment is the running time of the air conditioner in the process from starting up to the current moment;
The first processing unit is used for adjusting the opening of the electronic expansion valve of the air conditioner to be the sum of the opening of the electronic expansion valve at the current moment and a first opening correction value when the temperature of the inner pipe at the current moment is greater than or equal to the overload protection temperature and the running duration of the air conditioner at the current moment is smaller than a duration threshold value;
the device also comprises a first determining unit and a second determining unit, before the opening degree of the electronic expansion valve of the air conditioner is adjusted to be the sum of the opening degree of the electronic expansion valve at the current moment and the first opening degree correction value,
The first determining unit is used for determining the valve change rate according to Δp= (T-Tx)/(Tb-Tx);
A second determination unit configured to determine the first opening correction value based on pm1=a× (1+Δp) ×ps;
Wherein PM1 is the first opening correction value, a is a preset coefficient, Δp is a valve change rate, ps is the opening of the electronic expansion valve at the current moment, T is the temperature of the inner pipe at the current moment, tb is the overload protection temperature, and Tx is a frequency limiting temperature;
The device further comprises a sixth acquisition unit and a fifth determination unit, wherein the sixth acquisition unit is used for acquiring a plurality of exhaust temperatures and a plurality of outer ring temperatures of the air conditioner in a historical time period before acquiring the temperature of an inner pipe of an evaporator of the air conditioner at the current moment and the running time of the air conditioner at the current moment in real time, and the outer ring temperatures are the temperatures of outdoor environments where an outer machine of the air conditioner is positioned; a fifth determining unit configured to determine a frequency-limited temperature as a difference between a maximum value of all the exhaust temperatures of the air conditioner in the history period and an average value of all the outer ring temperatures of the air conditioner in the history period;
The device further comprises a sixth processing unit, a seventh processing unit and an eighth processing unit, wherein after the opening degree of the electronic expansion valve of the air conditioner is adjusted to be the sum of the opening degree of the electronic expansion valve at the current moment and a first opening degree correction value, the sixth processing unit is used for adjusting the opening degree of the electronic expansion valve to be the sum of the opening degree of the electronic expansion valve at the current moment and a second opening degree correction value, and the second opening degree correction value is larger than the first opening degree correction value under the condition that the temperature of the inner pipe at the current moment is larger than or equal to the frequency limiting temperature and the temperature of the inner pipe at the current moment is smaller than the overload protection temperature; the seventh processing unit is used for controlling the opening degree of the electronic expansion valve to be kept at the current moment when the temperature of the inner pipe at the current moment is smaller than the frequency limiting temperature; the eighth processing unit is used for adjusting the opening of the electronic expansion valve to be the sum of the opening of the electronic expansion valve at the current moment and the first opening correction value under the condition that the temperature of the inner pipe at the current moment is greater than or equal to the overload protection temperature;
the apparatus further includes a sixth determining unit configured to determine a second opening correction value of the electronic expansion valve based on pm2= (1+Δp) x Ps before adjusting the opening of the electronic expansion valve to a sum of the opening of the electronic expansion valve at a current time and the second opening correction value; wherein PM2 is the second opening correction value, Δp is a valve change rate, and Ps is the opening of the electronic expansion valve at the current time.
7. An air conditioning system, comprising: one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs comprising a control method for performing the air conditioner of any one of claims 1 to 5.
CN202311728189.1A 2023-12-15 2023-12-15 Air conditioner control method and device and air conditioner system Active CN117433101B (en)

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