CN115164457A - Control method and device for air conditioner, air conditioner and storage medium - Google Patents

Control method and device for air conditioner, air conditioner and storage medium Download PDF

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Publication number
CN115164457A
CN115164457A CN202210883143.6A CN202210883143A CN115164457A CN 115164457 A CN115164457 A CN 115164457A CN 202210883143 A CN202210883143 A CN 202210883143A CN 115164457 A CN115164457 A CN 115164457A
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CN
China
Prior art keywords
refrigerant
air conditioner
value
degree
refrigerant leakage
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Pending
Application number
CN202210883143.6A
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Chinese (zh)
Inventor
王星元
马玉奇
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.)
Qingdao Haier Air Conditioner Gen Corp Ltd
Qingdao Haier Air Conditioning Electric Co Ltd
Haier Smart Home Co Ltd
Chongqing Haier Air Conditioner Co Ltd
Original Assignee
Qingdao Haier Air Conditioner Gen Corp Ltd
Qingdao Haier Air Conditioning Electric Co Ltd
Haier Smart Home Co Ltd
Chongqing Haier Air Conditioner Co Ltd
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Publication date
Application filed by Qingdao Haier Air Conditioner Gen Corp Ltd, Qingdao Haier Air Conditioning Electric Co Ltd, Haier Smart Home Co Ltd, Chongqing Haier Air Conditioner Co Ltd filed Critical Qingdao Haier Air Conditioner Gen Corp Ltd
Priority to CN202210883143.6A priority Critical patent/CN115164457A/en
Publication of CN115164457A publication Critical patent/CN115164457A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/40—Fluid line arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
    • F24F1/005—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted on the floor; standing on the floor
    • 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
    • F24F11/36—Responding to malfunctions or emergencies to leakage of heat-exchange fluid
    • 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
    • F24F11/52—Indication arrangements, e.g. displays
    • 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
    • F24F11/52—Indication arrangements, e.g. displays
    • F24F11/526—Indication arrangements, e.g. displays giving audible indications
    • 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
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/89—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F25B49/022—Compressor control arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/02—Compressor control
    • F25B2600/021—Inverters therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/11—Fan speed control
    • 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)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Signal Processing (AREA)
  • Human Computer Interaction (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Fluid Mechanics (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The application relates to the technical field of air conditioners, and discloses a control method for an air conditioner, the air conditioner disposes the replenishing device of refrigerant circulation circuit and holding liquid refrigerant, refrigerant circulation circuit with the replenishing device passes through the pipeline intercommunication setting, the pipeline disposes control flap, the method includes: obtaining the refrigerant leakage degree of the refrigerant circulation loop; determining a target opening value corresponding to the refrigerant leakage degree according to the refrigerant leakage degree; and controlling the control valve to operate at the target opening value so as to enable the liquid refrigerant to be sucked into the refrigerant circulation loop through the pipeline. The method can improve the accuracy of refrigerant supply. The application also discloses a control device for the air conditioner, the air conditioner and a storage medium.

Description

Control method and device for air conditioner, air conditioner and storage medium
Technical Field
The present application relates to the field of air conditioners, and in particular, to a control method and apparatus for an air conditioner, and a storage medium.
Background
At present, the air conditioner can generate the condition of slow loss of a refrigerant in the using process. Under the condition of refrigerant loss, the refrigeration and/or heating effect of the air conditioner is influenced to a certain extent. In addition, when a large amount of refrigerant is lost, the air conditioner may have a fault such as an abnormal shutdown. Therefore, in the operation stage of the air conditioner, how to timely supply the refrigerant when the refrigerant is lost or leaked is a technical problem to be solved urgently at present.
The related art discloses a refrigerant supplementing device, which comprises a refrigerant storage tank, a capillary tube, a flow control valve, a pressure sensor and a control module. The refrigerant storage tank is communicated with the air suction pipe of the compressor through a capillary pipe and used for supplementing refrigerant to the compressor. The pressure sensor is arranged on the air suction pipe of the compressor and used for detecting the actually measured pressure value of the refrigerant when the compressor sucks air. The flow control valve is arranged on the capillary tube and used for controlling the opening according to the flow control instruction so that the flow rate of the refrigerant supplement is within a preset flow rate range. The control module is respectively electrically connected with the pressure sensor and the flow control valve and used for comparing the actual measurement pressure value of the refrigerant with the normal pressure value to obtain the lacking numerical value of the refrigerant and sending a flow control instruction to the flow control valve when the lacking numerical value of the refrigerant is lower than the set threshold value. In the refrigerant supplement device disclosed in the related art, the control module determines that the refrigerant is absent when the absence value of the refrigerant is lower than a set threshold value, and sends a flow control instruction to the flow control valve to control the opening degree of the flow control valve, so as to supplement a proper amount of the refrigerant.
In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:
the refrigerant supply device adopted by the related technology only compares the shortage value of the refrigerant with a set threshold value, and cannot acquire the specific refrigerant supply amount, so that the accuracy of refrigerant supply is poor.
Disclosure of Invention
The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.
The embodiment of the disclosure provides a control method and device for an air conditioner, the air conditioner and a storage medium, so as to improve the accuracy of refrigerant replenishment.
In some embodiments, the air conditioner is provided with a refrigerant circulation loop and a supply device containing liquid refrigerant, the refrigerant circulation loop and the supply device are communicated through a pipeline, the pipeline is provided with a control valve, and the method comprises the following steps: obtaining the refrigerant leakage degree of the refrigerant circulation loop; determining a target opening value corresponding to the refrigerant leakage degree according to the refrigerant leakage degree; and controlling the control valve to operate at the target opening value so as to enable the liquid refrigerant to be sucked into the refrigerant circulation loop through the pipeline.
In some embodiments, the apparatus comprises: comprising a processor and a memory storing program instructions, the processor being configured to execute the control method for an air conditioner as described above when executing the program instructions.
In some embodiments, an air conditioner includes a control apparatus for an air conditioner as previously described.
In some embodiments, a storage medium stores program instructions that, when executed, perform a control method for an air conditioner as previously described.
The control method and device for the air conditioner, the air conditioner and the storage medium provided by the embodiment of the disclosure can achieve the following technical effects:
and after the air conditioner determines a target opening value corresponding to the refrigerant leakage degree according to the refrigerant leakage degree of the refrigerant circulation loop, the control valve on the control pipeline operates at the target opening value. The refrigerant circulation loop control method and device can accurately acquire the target opening value corresponding to the refrigerant leakage degree, and accurately input the refrigerant stored in the supply device into the refrigerant circulation loop by controlling the opening value of the control valve, so that the accuracy of refrigerant supply is improved.
The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:
FIG. 1 is a schematic diagram of an air conditioner according to the disclosed embodiments;
fig. 2 is a schematic diagram of a control method for an air conditioner according to an embodiment of the present disclosure;
fig. 3 is a schematic diagram of another control method for an air conditioner according to an embodiment of the present disclosure;
fig. 4 is a schematic diagram of another control method for an air conditioner according to an embodiment of the present disclosure;
fig. 5 is a schematic diagram of another control method for an air conditioner according to an embodiment of the present disclosure;
fig. 6 is a schematic diagram of another control method for an air conditioner according to an embodiment of the present disclosure;
fig. 7 is a schematic diagram of another control method for an air conditioner according to an embodiment of the present disclosure;
fig. 8 is a schematic diagram of a control device for an air conditioner according to an embodiment of the present disclosure.
Detailed Description
So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.
The terms "first," "second," and the like in the description and in the claims, and the above-described drawings of embodiments of the present disclosure, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present disclosure described herein may be made. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.
The term "plurality" means two or more unless otherwise specified.
In the embodiment of the present disclosure, the character "/" indicates that the preceding and following objects are in an or relationship. For example, A/B represents: a or B.
The term "and/or" is an associative relationship that describes objects, meaning that three relationships may exist. For example, a and/or B, represents: a or B, or A and B.
The term "correspond" may refer to an association or binding relationship, and a corresponding to B refers to an association or binding relationship between a and B.
In the operation stage of the air conditioner, how to timely supply the refrigerant when the refrigerant is lost or leaked is a technical problem which needs to be solved urgently at present.
The related art discloses a refrigerant supplementing device, which comprises a refrigerant storage tank, a capillary tube, a flow control valve, a pressure sensor and a control module. The refrigerant storage tank is communicated with the air suction pipe of the compressor through a capillary pipe and used for supplementing refrigerant to the compressor. The pressure sensor is arranged on the air suction pipe of the compressor and used for detecting the actually measured pressure value of the refrigerant when the compressor sucks air. The flow control valve is arranged on the capillary tube and used for controlling the opening according to the flow control instruction so that the flow rate of the refrigerant supplement is within a preset flow rate range. The control module is respectively electrically connected with the pressure sensor and the flow control valve and used for comparing the actual measurement pressure value of the refrigerant with the normal pressure value to obtain the lacking numerical value of the refrigerant and sending a flow control instruction to the flow control valve when the lacking numerical value of the refrigerant is lower than the set threshold value. In the refrigerant supplement device disclosed in the related art, the control module determines that the refrigerant is absent when the absence value of the refrigerant is lower than a set threshold value, and sends a flow control instruction to the flow control valve to control the opening degree of the flow control valve, so as to supplement a proper amount of the refrigerant.
The refrigerant supply device adopted by the related technology only compares the shortage value of the refrigerant with a set threshold value, and cannot acquire the specific refrigerant supply amount, so that the accuracy of refrigerant supply is poor.
Referring to fig. 1, an embodiment of the present disclosure provides an air conditioner. The air conditioner is provided with a refrigerant circulation circuit and a supply device 200 for storing liquid refrigerant. The refrigerant circulation circuit is connected to the replenishing device 200 through a pipe 300. The circuit 300 is provided with a control valve 301. The refrigerant circulation circuit is provided with a throttling element.
Based on the above air conditioner structure, with reference to fig. 2, an embodiment of the present disclosure provides a control method for an air conditioner, including:
and S01, the air conditioner obtains the refrigerant leakage degree of the refrigerant circulation loop.
And S02, the air conditioner determines a target opening value corresponding to the refrigerant leakage degree according to the refrigerant leakage degree.
And S03, the air conditioner controls the control valve to operate at the target opening value, so that the liquid refrigerant is sucked into the refrigerant circulation loop through the pipeline.
By adopting the control method for the air conditioner, the air conditioner determines the target opening value corresponding to the refrigerant leakage degree according to the refrigerant leakage degree of the refrigerant circulation loop, and then controls the control valve on the pipeline to operate at the target opening value. The refrigerant circulation loop control method and device can accurately acquire the target opening value corresponding to the refrigerant leakage degree, and accurately input the refrigerant stored in the supply device into the refrigerant circulation loop by controlling the opening value of the control valve, so that the accuracy of refrigerant supply is improved.
In addition, when the air conditioner determines that the refrigerant leaks, if the amount of the refrigerant to be replenished is large, the amount of the refrigerant sucked into the refrigerant circulation circuit is large when the refrigerant is replenished through the control valve. The control valve is controlled to operate at the target opening value corresponding to the refrigerant leakage degree, so that the controllability of the amount of the supplied refrigerant is higher.
Alternatively, the control valve may be a solenoid valve, a needle valve, or an electric valve. The type of the control valve may not be particularly limited in the embodiments of the present disclosure.
Optionally, as shown in fig. 3, the determining, by the air conditioner according to the refrigerant leakage degree, a target opening value corresponding to the refrigerant leakage degree includes:
and S11, the air conditioner determines that the target opening degree value is a first opening degree when the refrigerant leakage degree indicates slight refrigerant leakage.
And S12, the air conditioner determines that the target opening degree value is the second opening degree when the refrigerant leakage degree indicates medium refrigerant leakage.
And S13, the air conditioner determines that the target opening degree value is the third opening degree when the refrigerant leakage degree indicates that the refrigerant is heavily leaked.
The third opening degree is larger than the second opening degree, and the second opening degree is larger than the first opening degree.
Therefore, the air conditioner determines the missing degree of the refrigerant according to the leakage degree of the refrigerant. And determining a corresponding target opening value according to the missing degree of the refrigerant, so that the target opening value is matched with the missing degree of the refrigerant. Specifically, when the refrigerant leakage degree indicates slight leakage of the refrigerant, the refrigerant is slightly lost. When the refrigerant leakage degree indicates medium leakage of the refrigerant, the refrigerant is moderately lacked. When the refrigerant leakage degree indicates that the refrigerant is heavily leaked, the refrigerant is heavily lost.
It can be understood that when the refrigerant leakage degree indicates that the refrigerant is seriously leaked, the air conditioner pushes prompt information to prompt a user to contact after-sales personnel for timely maintenance. The prompt message includes, but is not limited to, text message, audio message, and vibration message.
In practice, the control valve comprises a needle-lift valve. When the air conditioner determines that the refrigerant slightly leaks, the first opening degree of the needle valve is determined to be 10-20 steps. And when the air conditioner determines that the refrigerant is moderately leaked, determining that the second opening degree of the needle valve is 20-30 steps. And when the air conditioner determines that the refrigerant is heavily leaked, determining that the third opening degree of the needle valve is 30-40 steps.
With reference to fig. 4, an embodiment of the present disclosure further provides a control method for an air conditioner, including:
and S21, the air conditioner obtains the refrigerant leakage degree of the refrigerant circulation loop.
And S22, the air conditioner determines a target opening value corresponding to the refrigerant leakage degree according to the refrigerant leakage degree.
And S23, operating the air conditioner in a cooling mode.
And S24, the air conditioner controls the control valve to operate at the target opening value, so that the liquid refrigerant is sucked into the refrigerant circulation loop through the pipeline.
By adopting the control method for the air conditioner provided by the embodiment of the disclosure, the air conditioner operates in a refrigeration mode before the control valve operates at the target opening value, so that the control valve sucks the refrigerant in the supply device into the refrigerant circulation loop in the refrigeration mode, and the efficiency of refrigerant supply is favorably improved on the basis of improving the accuracy of refrigerant supply.
Optionally, the air conditioner operates in a cooling mode, comprising:
the compressor is controlled to operate at an initial operating frequency and the throttling element is controlled to operate at an initial opening.
Wherein the initial operation frequency indicates an initial value of an operation frequency when the compressor is started. The initial opening degree represents the lowest opening degree value of the operating stage of the throttling element.
Therefore, the air conditioner has basic heat exchange capacity when in the refrigerating mode operation by controlling the compressor to operate at the initial operation frequency and controlling the throttling element to operate at the initial opening degree. The condition that the refrigerant replenishing speed is too high due to the higher running frequency of the compressor and the larger opening degree value of the throttling element is avoided, and the control of the suction rate of the refrigerant in the replenishing device is facilitated.
It should be noted that, the air conditioner operates in a cooling mode, and further includes:
and controlling the indoor fan and the outdoor fan to operate at the corresponding preset rotating speeds.
The preset rotating speed of the indoor fan can be any value when the indoor fan runs. The preset rotating speed of the outdoor fan can be any value when the outdoor fan runs.
Therefore, the rotating speed values of the indoor and outdoor fans have certain influence on the heat exchange capacity of the refrigerant circulation loop. According to the embodiment of the disclosure, on the basis of controlling the compressor to operate at the initial operation frequency and controlling the throttling element to operate at the initial opening degree, the indoor fan and the outdoor fan are also controlled to operate at the respective corresponding preset rotating speeds, so that the accurate control of the suction rate of the refrigerant in the supply device is more favorably realized.
As an example, when a certain type of the vertical air conditioner is operated in a cooling mode, the compressor is controlled to operate at an initial operation frequency of 20Hz, the indoor fan and the outdoor fan are controlled to operate at respective preset rotation speeds of 700 rpm, and the throttling element is controlled to operate at an initial opening of 79 steps. The preset rotating speed of the indoor fan is 700 rpm, and the lowest rotating speed value of the indoor fan is represented. The preset rotation speed 700 rpm of the outdoor fan indicates a minimum rotation speed value of the outdoor fan.
Alternatively, as shown in fig. 5, the air conditioner obtaining the refrigerant leakage degree of the refrigerant circulation circuit includes:
and S31, the air conditioner acquires the current working condition of the air conditioner and the current value of the current complete machine.
And S32, the air conditioner determines the leakage degree of the refrigerant according to the current working condition and the current value of the whole machine.
Therefore, in the process of refrigerant leakage detection of the air conditioner, the refrigerant leakage condition is judged by the current working condition and the current value which can indirectly reflect the refrigerant leakage degree, and hardware such as a sensor related to the refrigerant pressure value is not required to be added. Therefore, the method reduces the hardware cost of refrigerant leakage self-checking while performing automatic detection of refrigerant leakage.
It should be noted that, when the air conditioner is in different working conditions, the current values of the whole air conditioner during normal operation are different. Meanwhile, under any working condition, if the refrigerant leaks, the current value of the whole machine current value is reduced. Under the working condition, the larger the absolute value of the difference value between the current value of the whole air conditioner and the current value of the whole air conditioner in normal operation is, the more serious the refrigerant leakage degree is. Therefore, the leakage degree of the refrigerant is determined according to the current working condition and the current value, and the refrigerant leakage is accurately detected.
Optionally, as shown in fig. 6, the determining, by the air conditioner, the refrigerant leakage degree according to the current working condition and the current value of the whole air conditioner includes:
s41, the air conditioner acquires an information table, and the information table stores different preset working conditions, preset power values corresponding to the preset working conditions and preset complete machine current values.
In the step, the preset power value represents the whole power value of the air conditioner. The preset current value represents the current value of the whole air conditioner. Because the air conditioner has different power values under different working conditions, the current values of the whole air conditioner are different, and therefore, different preset working conditions, and preset power values and preset current values corresponding to the preset working conditions are prestored in the information table.
And S42, matching the corresponding target power value and the target complete machine current value under the current working condition from the information table by the air conditioner.
S43, the air conditioner obtains a current complete machine current value corresponding to the operation of the air conditioner at the target power value.
And S44, the air conditioner determines the leakage degree of the refrigerant according to the matching condition of the current value of the whole machine and the target current value of the whole machine.
Therefore, firstly, the target power value under the current working condition can be accurately obtained by inquiring the information table in the embodiment of the disclosure. Then, the embodiment of the disclosure controls the air conditioner to operate at the target power value and obtains the corresponding current value. Finally, the leakage degree of the refrigerant is indirectly known according to the matching condition of the current value and the target current value. Therefore, the automatic detection of refrigerant leakage can be realized, and the intelligent detection capability of refrigerant leakage is improved.
Optionally, the determining, by the air conditioner, the refrigerant leakage degree according to a matching condition between the current value and the target current value includes:
the air conditioner determines that the refrigerant slightly leaks under the condition that the current value is within a first preset range.
And the air conditioner determines medium leakage of the refrigerant under the condition that the current value is in a second preset range.
And the air conditioner determines that the refrigerant is heavily leaked under the condition that the current value is within a third preset range.
And determining that the refrigerant is seriously leaked by the air conditioner under the condition that the current value of the air conditioner is within a fourth preset range.
Wherein the first preset range represents [ target current value × 80%, target current value × 90% ]. The second preset range represents [ target current value × 70%, target current value × 80%). The third preset range represents [ target current value × 50%, target current value × 70%). The fourth preset range indicates (0, target current value × 50%).
Therefore, under any working condition of the air conditioner, the larger the absolute value of the difference value between the total current value and the total current value of the air conditioner in normal operation is, the more serious the refrigerant leakage degree is, and therefore according to the matching condition of the current value and different preset ranges, the refrigerant leakage degree can be determined, and the accuracy of refrigerant leakage self-checking is improved.
As shown in fig. 7, an embodiment of the present disclosure further provides a control method for an air conditioner, including:
and S51, the air conditioner obtains the refrigerant leakage degree of the refrigerant circulation loop.
And S52, the air conditioner determines a target opening value corresponding to the refrigerant leakage degree according to the refrigerant leakage degree.
And S53, the air conditioner controls the control valve to operate at the target opening value, so that the liquid refrigerant is sucked into the refrigerant circulation loop through the pipeline.
And S54, the air conditioner acquires the refrigerant leakage degree of the refrigerant circulation loop again.
And S55, the air conditioner controls the control valve to be closed under the condition that the new refrigerant leakage degree indicates that the refrigerant is sufficient.
By adopting the control method for the air conditioner provided by the embodiment of the disclosure, the air conditioner acquires the refrigerant leakage degree of the refrigerant circulation loop again after controlling the liquid refrigerant to be sucked into the refrigerant circulation loop through management. And when the refrigerant is determined to be sufficient, the control valve is controlled to be closed, and on the basis of improving the accuracy of refrigerant supply, the intelligent control of the refrigerant supply is realized.
As shown in fig. 8, an embodiment of the present disclosure provides a control device for an air conditioner, including a processor (processor) 100 and a memory (memory) 101. Optionally, the apparatus may also include a Communication Interface (Communication Interface) 102 and a bus 103. The processor 100, the communication interface 102, and the memory 101 may communicate with each other via a bus 103. The communication interface 102 may be used for information transfer. The processor 100 may call the logic instructions in the memory 101 to perform the control method for the air conditioner of the above-described embodiment.
In addition, the logic instructions in the memory 101 may be implemented in the form of software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products.
The memory 101, which is a computer-readable storage medium, may be used for storing software programs, computer-executable programs, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 100 executes functional applications and data processing by executing program instructions/modules stored in the memory 101, that is, implements the control method for the air conditioner in the above-described embodiment.
The memory 101 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal device, and the like. In addition, memory 101 may include high speed random access memory and may also include non-volatile memory.
The embodiment of the disclosure provides an air conditioner, which comprises the control device for the air conditioner.
Embodiments of the present disclosure provide a computer-readable storage medium storing computer-executable instructions configured to perform the above-described control method for an air conditioner.
The disclosed embodiments provide a computer program product comprising a computer program stored on a computer-readable storage medium, the computer program comprising program instructions that, when executed by a computer, cause the computer to perform the above-described control method for an air conditioner.
The computer-readable storage medium described above may be a transitory computer-readable storage medium or a non-transitory computer-readable storage medium.
The technical solution of the embodiments of the present disclosure may be embodied in the form of a software product, where the computer software product is stored in a storage medium and includes one or more instructions to enable a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method of the embodiments of the present disclosure. And the aforementioned storage medium may be a non-transitory storage medium comprising: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes, and may also be a transient storage medium.
The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. Furthermore, the words used in the specification are words of description for example only and are not limiting upon the claims. As used in the description of the embodiments and the claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Similarly, the term "and/or" as used in this application is meant to encompass any and all possible combinations of one or more of the associated listed. Furthermore, the terms "comprises" and/or "comprising," when used in this application, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Without further limitation, an element defined by the phrase "comprising a …" does not exclude the presence of additional like elements in a process, method, or apparatus that comprises the element. In this document, each embodiment may be described with emphasis on differences from other embodiments, and the same and similar parts between the respective embodiments may be referred to each other. For methods, products, etc. of the embodiment disclosures, reference may be made to the description of the method section for relevance if it corresponds to the method section of the embodiment disclosure.
Those of skill in the art would appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software may depend upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the disclosed embodiments. It can be clearly understood by the skilled person that, for convenience and brevity of description, the specific working processes of the system, the apparatus and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments disclosed herein, the disclosed methods, products (including but not limited to devices, apparatuses, etc.) may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units may be merely a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form. The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to implement the present embodiment. In addition, functional units in the embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. In the description corresponding to the flowcharts and block diagrams in the figures, operations or steps corresponding to different blocks may also occur in different orders than disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two sequential operations or steps may in fact be executed substantially concurrently, or they may sometimes be executed in the reverse order, depending upon the functionality involved. Each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

Claims (10)

1. A control method for an air conditioner is characterized in that the air conditioner is provided with a refrigerant circulation loop and a supply device containing liquid refrigerant, the refrigerant circulation loop and the supply device are communicated through a pipeline, the pipeline is provided with a control valve, and the method comprises the following steps:
obtaining the refrigerant leakage degree of the refrigerant circulation loop;
determining a target opening value corresponding to the refrigerant leakage degree according to the refrigerant leakage degree;
and controlling the control valve to operate at the target opening value so as to enable the liquid refrigerant to be sucked into the refrigerant circulation loop through the pipeline.
2. The method of claim 1, wherein the determining a target opening value corresponding to the refrigerant leakage level according to the refrigerant leakage level comprises:
determining a target opening value as a first opening under the condition that the refrigerant leakage degree indicates slight refrigerant leakage;
determining the target opening degree value as a second opening degree under the condition that the refrigerant leakage degree represents medium refrigerant leakage;
determining a target opening degree value as a third opening degree under the condition that the refrigerant leakage degree indicates the refrigerant severe leakage;
wherein the third opening degree is greater than the second opening degree, and the second opening degree is greater than the first opening degree.
3. The method of claim 1, wherein prior to controlling the control valve to operate at the target opening value, further comprising:
operating in a cooling mode.
4. The method of claim 3, wherein the refrigerant circulation circuit is configured with a throttling element, and the operating in a cooling mode comprises:
controlling the compressor to operate at an initial operating frequency;
and controlling the throttling element to operate at an initial opening degree.
5. The method according to any one of claims 1 to 4, wherein the obtaining of the refrigerant leakage level of the refrigerant circulation circuit comprises:
acquiring the current working condition and the current value of the whole machine of the air conditioner;
and determining the leakage degree of the refrigerant according to the current working condition and the current complete machine current value.
6. The method of claim 5, wherein the determining the leakage degree of the refrigerant according to the current working condition and the current overall current value comprises:
acquiring an information table, wherein the information table stores different preset working conditions, preset power values corresponding to the preset working conditions and preset complete machine current values;
matching a target power value and a target complete machine current value corresponding to the current working condition from the information table;
acquiring the current complete machine current value corresponding to the operation of the air conditioner at the target power value;
and determining the leakage degree of the refrigerant according to the matching condition of the current complete machine current value and the target complete machine current value.
7. The method of any one of claims 1 to 4, wherein after controlling the control valve to operate at the target opening value, further comprising:
re-acquiring the refrigerant leakage degree of the refrigerant circulation loop;
and controlling the control valve to be closed under the condition that the new refrigerant leakage degree indicates that the refrigerant is sufficient.
8. A control apparatus for an air conditioner comprising a processor and a memory storing program instructions, characterized in that the processor is configured to execute the control method for an air conditioner according to any one of claims 1 to 7 when executing the program instructions.
9. An air conditioner characterized by comprising the control device for an air conditioner according to claim 8.
10. A storage medium storing program instructions, characterized in that the program instructions, when executed, perform the control method for an air conditioner according to any one of claims 1 to 7.
CN202210883143.6A 2022-07-26 2022-07-26 Control method and device for air conditioner, air conditioner and storage medium Pending CN115164457A (en)

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CN202210883143.6A CN115164457A (en) 2022-07-26 2022-07-26 Control method and device for air conditioner, air conditioner and storage medium

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Application Number Priority Date Filing Date Title
CN202210883143.6A CN115164457A (en) 2022-07-26 2022-07-26 Control method and device for air conditioner, air conditioner and storage medium

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