WO2020220451A1 - Procédé et système de détection de fuite de fluide frigorigène pour climatiseur et climatiseur - Google Patents

Procédé et système de détection de fuite de fluide frigorigène pour climatiseur et climatiseur Download PDF

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Publication number
WO2020220451A1
WO2020220451A1 PCT/CN2019/092899 CN2019092899W WO2020220451A1 WO 2020220451 A1 WO2020220451 A1 WO 2020220451A1 CN 2019092899 W CN2019092899 W CN 2019092899W WO 2020220451 A1 WO2020220451 A1 WO 2020220451A1
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WIPO (PCT)
Prior art keywords
refrigerant
concentration
air conditioner
time
refrigerant leakage
Prior art date
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PCT/CN2019/092899
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English (en)
Chinese (zh)
Inventor
齐虹杰
李廷勋
Original Assignee
广东美的制冷设备有限公司
美的集团股份有限公司
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Publication of WO2020220451A1 publication Critical patent/WO2020220451A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—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
    • F24F11/56—Remote control
    • F24F11/58—Remote control using Internet communication
    • 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
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • 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
    • F24F11/70—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
    • F24F11/79—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling the direction of the supplied air
    • 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

Definitions

  • This application relates to the technical field of household appliances, and in particular to a refrigerant leakage detection method and system of an air conditioner, and an air conditioner.
  • Leakage of air conditioner refrigerant not only affects the cooling and heating level of the air conditioner, but also has potential safety hazards. For example, for flammable refrigerants, if there are too many leaks, they may catch fire and pose safety hazards. Therefore, it is necessary to detect whether the refrigerant occurs leakage. In the related art, it is possible to determine whether a leak has occurred by detecting the concentration of the leaked refrigerant. For example, when the detected concentration reaches a certain threshold, it is determined that the leak has occurred. It is also possible to determine whether the refrigerant has leaked by detecting whether the concentration of the refrigerant has increased.
  • the method of determining whether a leak occurs by detecting the concentration of the leaked refrigerant is usually detected by a sensor or the like, which is affected by the detection accuracy of the sensor, thereby affecting the detection accuracy.
  • This application aims to solve one of the technical problems in the related technology at least to a certain extent.
  • the response speed of the sensor is slow and the specific threshold setting is small, when the sensor is running for a long time, its characteristics may change, resulting in a certain deviation in the measured value, which is likely to cause missed judgments, misjudgments, etc., and the judgment results are inaccurate.
  • an objective of the present application is to provide a refrigerant leakage detection method for air conditioners.
  • the method can accurately determine whether the refrigerant leaks, and has the advantage of reliable detection results.
  • the detection speed is fast, which effectively improves the detection efficiency of refrigerant leakage.
  • the second purpose of this application is to provide a refrigerant leakage detection system for air conditioners.
  • the third purpose of this application is to propose an air conditioner.
  • the fourth purpose of this application is to provide a non-transitory computer-readable storage medium.
  • the fifth purpose of this application is to propose an air conditioning device.
  • the first aspect of the present application discloses a refrigerant leakage detection method for an air conditioner, which includes the following steps: acquiring a refrigerant concentration at a first time and a refrigerant concentration at a second time at a predetermined sampling point, wherein , The second time is delayed from the first time; according to the refrigerant concentration at the first time, the refrigerant concentration at the second time, the first time and the second time, the refrigeration is obtained The rate of change in the concentration of the refrigerant; determining whether the refrigerant leaks according to the rate of change in the concentration of the refrigerant.
  • the refrigerant leakage detection method of the air conditioner of the present application can accurately determine whether the refrigerant leaks, and has the advantage of reliable detection results.
  • the detection speed is fast, which effectively improves the detection efficiency of refrigerant leakage.
  • the obtaining the concentration change rate of the refrigerant according to the refrigerant concentration at the first time, the refrigerant concentration at the second time, the first time and the second time includes: Obtain the concentration difference between the refrigerant concentration at the second time and the refrigerant concentration at the first time; obtain the time interval between the second time and the first time; according to the concentration difference and the time interval , The concentration change rate of the refrigerant is obtained.
  • the time interval is one or more refrigerant concentration sampling periods.
  • the determining whether the refrigerant leaks according to the concentration change rate of the refrigerant includes: judging whether the concentration change rate of the refrigerant is greater than a preset value, wherein the preset value is positive ; If the concentration change rate is greater than the preset value, it is determined that the refrigerant leaks.
  • the method further includes: adjusting the air flow rate at the predetermined sampling point to reduce the refrigerant concentration at the predetermined sampling point.
  • the adjusting the air flow rate at the predetermined sampling point includes at least one of adjusting the speed of the indoor fan, controlling the swing of the air guide blade, and adjusting the fresh air from the fresh air system.
  • the method further includes: controlling the air conditioner to stop; or, controlling the air conditioner to stop and close the refrigerant circulation pipeline of the refrigerant.
  • the method when the refrigerant leakage is determined according to the concentration change rate of the refrigerant, the method further includes: performing a refrigerant leakage reminder; and/or, reporting the refrigerant leakage reminder to the server and/or the smart terminal of the user .
  • a second aspect of the present application discloses a refrigerant leakage detection system for an air conditioner, including: a detection module for acquiring the refrigerant concentration at the first time and the refrigerant concentration at the second time at a predetermined sampling point, wherein The second time is delayed after the first time; a concentration change rate calculation module is used to calculate the refrigerant concentration at the first time, the refrigerant concentration at the second time, the first time and the At the second moment, the concentration change rate of the refrigerant is obtained; the leakage determination module is configured to determine whether the refrigerant leaks according to the concentration change rate of the refrigerant.
  • the refrigerant leakage detection system of the air conditioner of the present application can accurately determine whether the refrigerant leaks, and has the advantage of reliable detection results.
  • the detection speed is fast, which effectively improves the detection efficiency of refrigerant leakage.
  • the concentration change rate calculation module is configured to obtain the concentration difference between the refrigerant concentration at the second time and the refrigerant concentration at the first time, and obtain the difference between the second time and the first time.
  • the time interval of time, and the concentration change rate of the refrigerant is obtained according to the concentration difference and the time interval.
  • the time interval is one or more refrigerant concentration sampling periods.
  • the leakage determination module is configured to determine the refrigerant leakage when determining that the rate of change of the concentration of the refrigerant is greater than a preset value, wherein the preset value is positive.
  • it further includes: an adjustment unit, configured to adjust the air flow rate at the predetermined sampling point when the refrigerant leaks, so as to reduce the refrigerant concentration at the predetermined sampling point.
  • the adjusting unit is used for at least one of adjusting the speed of the indoor fan, controlling the swing of the wind guide blade, and adjusting the fresh air of the fresh air system.
  • it further includes a control unit for controlling the shutdown of the air conditioner when the refrigerant leaks, or controlling the shutdown of the air conditioner and closing the refrigerant circulation pipeline of the refrigerant.
  • it further includes: an early warning unit, configured to perform a refrigerant leakage reminder when the refrigerant leaks, and/or report the refrigerant leakage reminder to the server and/or the user's smart terminal.
  • an early warning unit configured to perform a refrigerant leakage reminder when the refrigerant leaks, and/or report the refrigerant leakage reminder to the server and/or the user's smart terminal.
  • a third aspect of the present application discloses an air conditioner, including: the refrigerant leakage detection system of the air conditioner according to the above-mentioned second aspect.
  • the air conditioner can accurately determine whether the refrigerant has leaked, and has the advantage of reliable detection results.
  • the detection speed is fast, which effectively improves the detection efficiency of refrigerant leakage.
  • the fourth aspect of the present application discloses a non-transitory computer-readable storage medium on which a refrigerant leakage detection program of an air conditioner is stored.
  • the refrigerant leakage detection program of the air conditioner is executed by a processor, the above-mentioned first aspect is realized.
  • the fifth aspect of the present application discloses an air conditioning device, including a memory, a processor, and a refrigerant leakage detection program of an air conditioner stored in the memory and operable on the processor, and the processor executes the cooling of the air conditioner.
  • the refrigerant leakage detection program implements the refrigerant leakage detection method of the air conditioner described in the first aspect.
  • the air conditioning equipment can accurately determine whether the refrigerant leaks, and has the advantage of reliable detection results.
  • the detection speed is fast, which effectively improves the detection efficiency of refrigerant leakage.
  • Fig. 1 is a flowchart of a refrigerant leakage detection method for an air conditioner according to an embodiment of the present application
  • FIG. 2 is a schematic diagram of the concentration of leaked refrigerant in a method for detecting refrigerant leakage of an air conditioner according to an embodiment of the present application;
  • Fig. 3 is a structural block diagram of a refrigerant leakage detection system for an air conditioner according to an embodiment of the present application.
  • Fig. 1 is a flowchart of a refrigerant leakage detection method for an air conditioner according to an embodiment of the present application. As shown in Fig. 1, a refrigerant leakage detection method for an air conditioner according to an embodiment of the present application includes the following steps:
  • the refrigerant concentration can be detected by corresponding sensors.
  • the predetermined sampling point refers to a certain number of locations outside the refrigerant circulation pipeline of the refrigerant.
  • the sensor is arranged on the refrigerant circulation pipeline of the refrigerant at a pipeline connection that is relatively prone to refrigerant leakage. When a leak occurs, the leaked refrigerant concentration can be effectively detected.
  • the sensor can sample the refrigerant concentration every 1 second.
  • the current time can be used as the first time, and the sensor performs a sampling.
  • the second time can be the time at the first time, and the time after a specific time interval. It should be noted that the time interval is one or more The refrigerant concentration sampling period, if the sampling period is 1 second, the time interval is an integer multiple of 1 second.
  • the sampling period is 1 second as an example.
  • the sampled refrigerant concentrations are w0, w1, w2, w3, and w4, respectively.
  • t0, t1, t2, t3, and t4 can be sampled every time a sampling period (such as 1 second), of course, can also be sampled after multiple sampling periods (such as 3 sampling periods, ie, 3 seconds) .
  • the refrigerant concentration at the first time t0 is w0
  • the refrigerant concentration at the second time t1 is w1.
  • S102 Obtain the concentration change rate of the refrigerant according to the refrigerant concentration at the first time, the refrigerant concentration at the second time, the first time and the second time.
  • the concentration change rate of the refrigerant refers to the slope of the change in the concentration of the refrigerant over time. Then, according to the refrigerant concentration at the first time, the refrigerant concentration at the second time, the first time and the second time, the concentration change rate of the refrigerant is obtained, which can be obtained as follows:
  • dw t1 refers to the rate of change of the refrigerant concentration at the second time t1, so that the rate of change of the refrigerant concentration at the second time t1 is obtained.
  • S103 Determine whether the refrigerant leaks according to the concentration change rate of the refrigerant.
  • the preset value can be determined based on experience, of course, The value can also be determined according to actual requirements or actual conditions.
  • the preset value when the preset value is set to a small value, such as 0.03, it means that the concentration change rate of the refrigerant concentration of the refrigerant collected twice has a small change, that is, the slope of the refrigerant concentration change rate is small, and it is also determined.
  • the preset value can also be determined according to actual needs or actual conditions. Avoid detection that is too sensitive. Of course, you should avoid setting too large, which may result in too insensitive detection.
  • the rate of change of the refrigerant concentration is a value greater than zero, it means that the refrigerant concentration sampled at the second moment is greater than the refrigerant concentration sampled at the first moment, that is, the refrigerant concentration sampled at the later moment It is greater than the refrigerant concentration sampled at the previous moment, and at the same time, when the rate of change of the refrigerant concentration is greater than a positive value, it is determined that the refrigerant has leaked continuously over time, thereby avoiding sampling errors The effect on the judgment result is that it is determined without error that the refrigerant has leaked.
  • the sampling period is very short (such as milliseconds)
  • the time difference between the first time and the second time can also be controlled in a short time. Therefore, whether the refrigerant is leaking is determined according to the rate of change in the concentration of the refrigerant.
  • the refrigerant leakage judgment can be completed in a short time (such as 0.3 seconds), which has the advantage of fast detection speed.
  • the refrigerant leakage detection method of the air conditioner according to the embodiment of the present application can accurately determine whether the refrigerant has leaked, and has the advantage of reliable detection results.
  • the detection speed is fast, which effectively improves the detection efficiency of refrigerant leakage.
  • the method when the refrigerant leakage is determined according to the concentration change rate of the refrigerant, the method further includes: adjusting the air flow rate at the predetermined sampling point to reduce the refrigerant concentration at the predetermined sampling point.
  • adjusting the air flow rate at the predetermined sampling point may also include: controlling the swing of the wind guide blade and/or adjusting the fresh air from the fresh air system, that is, the swing of the wind guide blade can also increase
  • the air flow rate can also send a signal to the fresh air system, control the operation of the fresh air system, and extract fresh air, which also serves the purpose of increasing the indoor air flow rate, thereby accelerating the diffusion of leaked refrigerant into the air.
  • the method further includes: controlling the air conditioner to stop, or controlling the air conditioner to stop and close the refrigerant circulation pipeline of the refrigerant. In this way, more refrigerant leakage can be avoided, safety is improved, and the cost of air conditioning maintenance is reduced.
  • the refrigerant leak when a refrigerant leaks, in order for the user to find out in time and take timely countermeasures, in the method of the embodiment of the present application, when the refrigerant leak is determined according to the concentration change rate of the refrigerant, it also includes: performing refrigerant leakage Prompt, and/or, report refrigerant leakage prompt to the server and/or the user's smart terminal. Therefore, the user or the after-sales service of the air conditioner can immediately know that the user's air conditioner has a refrigerant leakage failure, and can perform repairs in a timely manner, thereby improving the quality of after-sales service and improving the user experience of the air conditioner.
  • a refrigerant leakage detection system 300 for an air conditioner according to an embodiment of the present application includes: a detection module 310, concentration The rate of change calculation module 320 and the leakage determination module 330.
  • the detection module 310 is configured to obtain the refrigerant concentration at the first time and the refrigerant concentration at the second time at a predetermined sampling point, wherein the second time is delayed from the first time.
  • the concentration change rate calculation module 320 is configured to obtain the concentration change rate of the refrigerant according to the refrigerant concentration at the first time, the refrigerant concentration at the second time, the first time and the second time.
  • the leakage determination module 330 is configured to determine whether the refrigerant leaks according to the concentration change rate of the refrigerant.
  • the concentration change rate calculation module 320 is configured to obtain the concentration difference between the refrigerant concentration at the second moment and the refrigerant concentration at the first moment, and to obtain the second moment The time interval from the first moment, and the concentration change rate of the refrigerant is obtained based on the concentration difference and the time interval.
  • time interval is one or more refrigerant concentration sampling periods.
  • the leakage determination module 330 is configured to determine that the refrigerant is leaking when the concentration change rate of the refrigerant is determined to be greater than a preset value, wherein the preset value is positive.
  • it further includes: an adjusting unit (not shown in FIG. 3) for adjusting the air flow rate at the predetermined sampling point when the refrigerant leaks, so as to reduce the predetermined sampling point Concentration of refrigerant on
  • the adjustment unit is used for at least one of adjusting the speed of the indoor fan, controlling the swing of the wind guide blade, and adjusting the fresh air of the fresh air system.
  • it further includes: a control unit (not shown in FIG. 3), configured to control the shutdown of the air conditioner when the refrigerant leaks, or control the shutdown of the air conditioner and turn off the refrigerant The refrigerant circulation pipeline.
  • a control unit (not shown in FIG. 3), configured to control the shutdown of the air conditioner when the refrigerant leaks, or control the shutdown of the air conditioner and turn off the refrigerant The refrigerant circulation pipeline.
  • an early warning unit (not shown in FIG. 3), configured to perform a refrigerant leakage reminder when the refrigerant leaks, and/or report a refrigerant leakage reminder to the server And/or the user’s smart terminal.
  • the refrigerant leakage detection system of the air conditioner of the embodiment of the present application can accurately determine whether the refrigerant has leaked, and has the advantage of reliable detection results.
  • the detection speed is fast, which effectively improves the detection efficiency of refrigerant leakage.
  • an embodiment of the present application discloses an air conditioner, including the refrigerant leakage detection system of the air conditioner according to any one of the above embodiments.
  • the air conditioner can accurately determine whether the refrigerant has leaked, and has the advantage of reliable detection results.
  • the detection speed is fast, which effectively improves the detection efficiency of refrigerant leakage.
  • an embodiment of the present application discloses a non-transitory computer-readable storage medium on which a computer program is stored.
  • the computer program is executed by a processor, the cooling of the air conditioner according to any one of the above embodiments is realized.
  • Agent leak detection method Agent leak detection method.
  • an embodiment of the present application discloses an air conditioning device on which a computer program is stored, and when the computer program is executed by a processor, the method for detecting refrigerant leakage of an air conditioner according to any one of the above embodiments is realized.
  • the air conditioning equipment of the embodiment of the present application it can accurately determine whether the refrigerant has leaked, and has the advantage of reliable detection results.
  • the detection speed is fast, which effectively improves the detection efficiency of refrigerant leakage.
  • the air conditioning device is, for example, an air conditioner.
  • the aforementioned non-transitory computer-readable storage medium may adopt any combination of one or more computer-readable media.
  • the computer-readable medium may be a computer-readable signal medium or a computer-readable storage medium.
  • the computer-readable storage medium may be, for example, but not limited to, an electric, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the above.
  • computer-readable storage media include: electrical connections with one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (Read Only Memory) ; Hereinafter referred to as: ROM), Erasable Programmable Read Only Memory; hereinafter referred to as EPROM) or flash memory, optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic memory Pieces, or any suitable combination of the above.
  • the computer-readable storage medium can be any tangible medium that contains or stores a program, and the program can be used by or in combination with an instruction execution system, apparatus, or device.
  • the computer-readable signal medium may include a data signal propagated in baseband or as a part of a carrier wave, and computer-readable program code is carried therein. This propagated data signal can take many forms, including, but not limited to, electromagnetic signals, optical signals, or any suitable combination of the foregoing.
  • the computer-readable signal medium may also be any computer-readable medium other than the computer-readable storage medium.
  • the computer-readable medium may send, propagate, or transmit the program for use by or in combination with the instruction execution system, apparatus, or device .
  • the program code contained on the computer-readable medium can be transmitted by any suitable medium, including, but not limited to, wireless, wire, optical cable, RF, etc., or any suitable combination of the above.
  • the computer program code used to perform the operations of the present application can be written in one or more programming languages or a combination thereof.
  • the programming languages include object-oriented programming languages-such as Java, Smalltalk, C++, and also conventional Procedural programming language-such as "C" language or similar programming language.
  • the program code can be executed entirely on the user's computer, partly on the user's computer, executed as an independent software package, partly on the user's computer and partly executed on a remote computer, or entirely executed on the remote computer or server.
  • the remote computer can be connected to the user's computer through any kind of network-including local area network (Local Area Network; hereinafter referred to as LAN) or Wide Area Network (hereinafter referred to as WAN), or Connect to an external computer (for example, use an Internet service provider to connect via the Internet).
  • LAN Local Area Network
  • WAN Wide Area Network
  • an external computer for example, use an Internet service provider to connect via the Internet.

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Abstract

La présente invention concerne un procédé et un dispositif de détection de fuite de fluide frigorigène pour un climatiseur, et un climatiseur. Le procédé de détection de fuite de fluide frigorigène pour un climatiseur comprend : l'acquisition d'une concentration de fluide frigorigène à un premier moment et d'une concentration de fluide frigorigène à un deuxième moment à un point d'échantillonnage prédéterminé, le deuxième moment étant postérieur au premier moment ; l'obtention du taux de changement de concentration d'un fluide frigorigène en fonction de la concentration de fluide frigorigène au premier moment, de la concentration de fluide frigorigène au deuxième moment, du premier moment et du deuxième moment ; et la détermination du fait que le fluide frigorigène fuit ou non en fonction du taux de changement de concentration du fluide frigorigène. Le procédé de détection de fuite de fluide frigorigène pour un climatiseur selon la présente invention peut déterminer avec précision si un fluide frigorigène fuit, et présente l'avantage du résultat de détection qui est fiable. De plus, la vitesse de détection est rapide, et l'efficacité de détection de fuite de fluide frigorigène est efficacement améliorée.
PCT/CN2019/092899 2019-04-29 2019-06-26 Procédé et système de détection de fuite de fluide frigorigène pour climatiseur et climatiseur WO2020220451A1 (fr)

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CN201910356443.7 2019-04-29
CN201910356443.7A CN110044007A (zh) 2019-04-29 2019-04-29 空调的制冷剂泄漏检测方法、系统及空调

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CN110822630B (zh) * 2019-11-26 2021-01-08 广东美的制冷设备有限公司 空调器冷媒泄露的检测方法、空调器及可读存储介质
CN111503759B (zh) * 2020-04-29 2024-06-21 广东美的制冷设备有限公司 空调室外机、冷媒检测方法及存储介质
CN111503812A (zh) * 2020-04-29 2020-08-07 广东美的制冷设备有限公司 冷媒检测方法、空调器及存储介质
CN114151922A (zh) * 2021-09-30 2022-03-08 杭州先途电子有限公司 一种控制方法、控制器和空调系统

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