WO2024041005A1 - Method and apparatus for detecting refrigerant anomaly, air conditioner, and storage medium - Google Patents

Method and apparatus for detecting refrigerant anomaly, air conditioner, and storage medium Download PDF

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Publication number
WO2024041005A1
WO2024041005A1 PCT/CN2023/089859 CN2023089859W WO2024041005A1 WO 2024041005 A1 WO2024041005 A1 WO 2024041005A1 CN 2023089859 W CN2023089859 W CN 2023089859W WO 2024041005 A1 WO2024041005 A1 WO 2024041005A1
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WO
WIPO (PCT)
Prior art keywords
compressor
refrigerant
air conditioner
temperature
refrigerant circulation
Prior art date
Application number
PCT/CN2023/089859
Other languages
French (fr)
Chinese (zh)
Inventor
李海军
李鹏辉
赵国胜
贾香慧
周洪进
杨青
张润雨
Original Assignee
青岛海尔空调器有限总公司
青岛海尔空调电子有限公司
海尔智家股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 青岛海尔空调器有限总公司, 青岛海尔空调电子有限公司, 海尔智家股份有限公司 filed Critical 青岛海尔空调器有限总公司
Publication of WO2024041005A1 publication Critical patent/WO2024041005A1/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
    • F24F11/38—Failure diagnosis
    • 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
    • F24F11/61—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
    • 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
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/20—Heat-exchange fluid temperature

Definitions

  • This application relates to the technical field of smart home appliances, for example, to a method, device, air conditioner, and storage medium for detecting refrigerant anomalies.
  • the abnormality of air conditioner refrigerant is the most prominent and common problem reported in the after-sales market. After the air conditioner refrigerant is abnormal, the system operation will be in an abnormal state. Abnormal refrigerant in the air conditioner will directly affect the cooling effect of the air conditioner, so it is very necessary to detect abnormal refrigerant during the operation of the air conditioner.
  • the related art discloses a method for detecting the refrigerant abnormality of the air conditioner.
  • the method includes: detecting refrigerant anomalies after the system is stable, comparing and analyzing the actual indoor coil temperature with the initial indoor coil temperature and indoor ambient temperature respectively, and detecting refrigerant anomalies in the air conditioner.
  • the related technology did not take into account the impact on the refrigerant anomaly detection results under refrigeration conditions when the current indoor ambient temperature range is different and the compressor is in different states.
  • the related technology can detect refrigerant anomalies under refrigeration conditions, the detection method is insensitive, prone to misjudgment, and the detection accuracy of refrigerant anomalies is low.
  • Embodiments of the present disclosure provide a method, device, air conditioner, and storage medium for detecting refrigerant anomalies, so as to improve the accuracy of refrigerant anomaly detection in refrigeration operating conditions.
  • the method includes: when the continuous operation time of the compressor is greater than or equal to a preset time period, detecting the current indoor ambient temperature Tr and the current indoor coil temperature Tp; when Tr ⁇ T1, based on Tr,Tp and the initial coil temperature Tp1 to analyze the refrigerant circulation situation; in the case of T2 ⁇ Tr ⁇ T1, analyze the refrigerant circulation situation based on Tr, Tp, Tp1 and the current status of the compressor; in the case of abnormal refrigerant circulation, output the refrigerant circulation Abnormal prompt information; where T1 is the first temperature threshold and T2 is the second temperature threshold.
  • Tr, Tp and Tp1 meet the conditions for compressor freezing protection or temperature shutdown, including:
  • T3>T5, and T4>T5 are determined according to the Tr.
  • determining T3, T4, and T5 according to the Tr includes: determining T3, T4, and T5 corresponding to Tr according to a preset correspondence relationship.
  • the method further includes: controlling the compressor to stop; controlling the external fan to stop; and controlling the internal fan to keep running.
  • controlling the compressor to stop it also includes: controlling the compressor to restart when the cumulative number of compressor stops is less than a preset value; and controlling the compressor to restart when the cumulative number of compressor stops is greater than or equal to the preset value. In this case, keep the compressor in shutdown state.
  • the device is used in air conditioner refrigeration operating conditions, and includes: a processor and a memory storing program instructions.
  • the processor is configured to execute the above-mentioned steps when running the program instructions. Method for detecting refrigerant anomalies.
  • the air conditioner includes a compressor and a heat exchanger, and also includes a device for detecting refrigerant anomalies as described above.
  • the storage medium includes: stored program instructions, and when the program instructions are run, the above-mentioned method for detecting refrigerant anomalies is executed.
  • Figure 1 is a schematic structural diagram of the air conditioner
  • Figure 2 is a schematic diagram of a method for detecting refrigerant anomalies provided by an embodiment of the present disclosure
  • Figure 3 is a schematic diagram of another method for detecting refrigerant anomalies provided by an embodiment of the present disclosure
  • Figure 4 is a schematic diagram of another method for detecting refrigerant anomalies provided by an embodiment of the present disclosure.
  • Figure 5 is a schematic diagram of another method for detecting refrigerant anomalies provided by an embodiment of the present disclosure.
  • Figure 6 is a schematic diagram of a device for detecting refrigerant anomalies provided by an embodiment of the present disclosure.
  • A/B means: A or B.
  • a and/or B means: A or B, or A and B.
  • correspondence can refer to an association relationship or a binding relationship.
  • correspondence between A and B refers to an association relationship or a binding relationship between A and B.
  • abnormal air conditioner refrigerant is the most prominent and common problem reported in the market after-sales service.
  • Abnormal air conditioner refrigerant After the system is running, it will be in an abnormal state. Abnormal refrigerant in the air conditioner will directly affect the cooling effect of the air conditioner. Therefore, it is very necessary to detect abnormal refrigerant during the operation of the air conditioner.
  • the related art discloses a method for detecting the refrigerant abnormality of the air conditioner.
  • the method includes: detecting refrigerant anomalies after the system is stable, comparing and analyzing the actual indoor coil temperature with the initial indoor coil temperature and indoor ambient temperature respectively, and detecting refrigerant anomalies in the air conditioner.
  • the related technology detects refrigerant anomalies, it does not take into account the impact of different current indoor ambient temperature ranges and different compressor states on the refrigerant anomaly detection results under refrigeration conditions.
  • the related technology can detect refrigerant anomalies under refrigeration conditions, the detection method is insensitive, prone to misjudgment, and the detection accuracy of refrigerant anomalies is low.
  • air conditioners usually include a refrigeration cycle.
  • the refrigeration cycle includes a compressor 11, an outdoor heat exchanger 12, a throttling device 13, an indoor heat exchanger 14 and a four-way valve 15.
  • the air conditioner also includes an electronic control device (not shown in the figure) that controls the operation of the refrigeration cycle, and the electronic control device includes a processor.
  • the processor is used to control the compressor 11, the throttling device 13 and other electronic control components to implement various functions of the air conditioner.
  • Embodiments of the present disclosure provide a method and device for detecting refrigerant anomalies, an air conditioner, and a storage medium to improve the accuracy of refrigerant anomaly detection under refrigeration operating conditions.
  • embodiments of the present disclosure provide a method for detecting refrigerant anomalies. As shown in Figure 2, the method includes:
  • Tr and Tp can be detected respectively by a plurality of temperature sensors provided in the air conditioner.
  • the temperature sensor used to detect Tr is installed at the air inlet of the indoor unit of the air conditioner, so that the detected Tr can be more accurate.
  • the temperature sensor used to detect Tp is installed at the coil position of the indoor unit of the air conditioner, and the real-time temperature detected by the temperature sensor is regarded as Tp.
  • the continuous operation time of the compressor When the continuous operation time of the compressor is greater than or equal to the preset time, it indicates that the air conditioner has been running for cooling for a period of time and the air conditioner has entered a stable state.
  • the temperature sensor has also entered a stable operating state, and the detected Tr and Tp are relatively stable.
  • the preset time is greater than or equal to 20 minutes (min), and the detected Tr and Tp are more reliable.
  • T1 is the first temperature threshold. It should be noted that the set T1 should not be low. Optionally, T1 ⁇ 25°C. More specifically, T1 is 25°C, 26°C or 27°C. If the value of T1 is less than 25°C, for example, if Tr is set to 23°C, the air conditioner may frost during cooling operation, causing the compressor to activate freeze protection and enter a shutdown state. In addition, when T1 ⁇ 23°C, if T1 reaches the set temperature, the compressor will also enter a shutdown state. therefore, Setting T1 to greater than or equal to 25°C can make the analysis results of the refrigerant cycle more reliable and accurate.
  • the processor can accurately analyze the refrigerant circulation situation based on the temperature abnormalities displayed by Tp, Tr and Tp1 in this situation.
  • the processor analyzes the refrigerant circulation situation based on Tr, Tp, Tp1 and the current status of the compressor.
  • T2 is the second temperature threshold. It should be noted that the minimum set temperature of air conditioners is generally 16°C. Optionally, 16°C ⁇ T2 ⁇ 25°C. More specifically, T2 is 16°C, 17°C or 18°C. Setting T2 to be greater than or equal to 16°C and less than 25°C can make the analysis results of the refrigerant cycle more reliable and accurate.
  • the processor can accurately analyze the refrigerant circulation situation based on the temperature anomalies displayed by Tp, Tr and Tp1 in this case, combined with the current status of the compressor.
  • Tr ⁇ T1 the current heat exchange amount of the air conditioner is determined based on Tr, Tp and Tp1, and the refrigerant circulation situation is analyzed.
  • T2 ⁇ Tr ⁇ T1 the current heat exchange amount of the air conditioner is determined based on Tr, Tp and Tp1, and combined with the current status of the compressor, possible misjudgments during the detection process are eliminated.
  • This detection method can reduce the probability of misjudgment and improve the accuracy of refrigerant abnormality detection in refrigeration operating conditions.
  • the processor outputting prompt information indicating the abnormality of the refrigerant circulation includes: prompting the abnormality of the refrigerant circulation through an indicator light. For example, the light flashes, or the light displays a specific color.
  • the processor outputs prompt information indicating that the refrigerant cycle is abnormal, including: prompting and displaying the preset time of the fault code of the refrigerant cycle abnormality through the display screen; or, directly displaying the preset time of the refrigerant cycle abnormality on the display screen.
  • the fault information is recorded into the memory. More specifically, the preset time is 3min-6min. In this way, the judgment results are more stable, and at the same time, information on abnormal refrigerant circulation can be fed back to the user in a timely and intuitive manner.
  • the processor analyzes the refrigerant circulation situation based on Tr, Tp and Tp1, including: if
  • T3 is the third temperature threshold
  • T4 is the fourth temperature threshold.
  • T3 may be, but is not limited to, between 5°C and 7°C
  • T4 may be, but is not limited to, between 5°C and 7°C. More specifically, T3 is 5°C, 6°C or 7°C.
  • T4 is 5°C, 6°C or 7°C. If T3 and T4 are set too large, the absolute value of the difference between Tp and Tp1 can be less than or equal to T3, and the absolute value of the difference between Tp and Tr can be less than or equal to T4, but this does not mean that the current air conditioner The heat exchange rate is low.
  • the air conditioner may not have abnormal refrigerant circulation, and misjudgment may easily occur. If T3 and T4 are set too small, it will be difficult to detect Tp and Tp1, The difference in Tr makes it difficult to detect refrigerant circulation abnormalities. Therefore, setting T3 and T4 within this temperature range can better achieve refrigerant cycle abnormality detection, and neither misjudgment nor missed detection will occur when the refrigerant cycle is abnormal, ensuring the accuracy of the refrigerant cycle abnormality detection results. accuracy.
  • Tr ⁇ T1 When Tr ⁇ T1 is satisfied under the cooling operation condition of the air conditioner, if the difference between Tp1 and Tp is small, and the difference between Tp and Tr is also small, it can be determined that the air conditioner has a refrigerant cycle abnormality.
  • the processor analyzes the refrigerant cycle situation based on Tr, Tp, Tp1 and the current status of the compressor, including: if Tr, Tp and Tp1 meet the conditions for compressor freezing protection or temperature shutdown, and the compressor is not in freezing state Protection or not in the temperature shutdown state, it is determined that the refrigerant circulation is abnormal.
  • Tr, Tp and Tp1 meet the conditions for compressor freeze protection or temperature shutdown, including:
  • T5 is the fifth temperature threshold. It should be noted that the set T5 should not be too large or too small. Alternatively, T5 may be, but is not limited to, between 2°C and 4°C. More specifically, T5 is 2°C, 3°C or 4°C. If T5 is set too large, although the absolute value of the difference between Tp and Tp1 and Tr can be less than or equal to T5, this does not mean that the current heat exchange rate of the air conditioner is low. In this case, the air conditioner may not have abnormal refrigerant circulation, and misjudgment may easily occur. If T5 is set too small, it will be difficult to detect the difference between Tp and Tp1 and Tr, that is, it will be difficult to detect refrigerant cycle abnormalities. Therefore, setting T5 within this temperature range can better detect refrigerant cycle anomalies, and neither misjudgment nor missed detection will occur when refrigerant cycle anomalies occur, ensuring the accuracy of refrigerant cycle anomaly detection results. .
  • T3>T5, T4>T5, and T3, T4, and T5 are determined according to Tr.
  • Tr When Tr is in different temperature ranges, the absolute value of the difference between Tp and Tr is different. The higher the Tr, the better the heat exchange effect of the air conditioner under cooling operating conditions, and the greater the absolute value of the difference between Tp and Tr. Determine the values of T3, T4, and T5 based on Tr. When Tr is in different temperature ranges, setting T3, T4, and T5 respectively can make the detection results more accurate and sensitive.
  • the processor determines T3, T4, and T5 according to Tr, including: the processor determines T3, T4, and T5 corresponding to Tr according to a preset correspondence relationship.
  • Table 1 shows an optional correspondence between Tr and T3 and T4.
  • Table 2 shows an optional correspondence between Tr and T5.
  • embodiments of the present disclosure provide another method for detecting refrigerant anomalies, including:
  • the processor analyzes the refrigerant circulation situation based on Tr, Tp, Tp1 and the current status of the compressor.
  • the processor controls the compressor to stop; the processor controls the external fan to stop; the processor controls the internal fan to keep running.
  • the processor controls the compressor to stop and the outdoor fan to stop, which can ensure that the air conditioner operates in a stable and safe environment and avoid the refrigerant cycle abnormality from becoming more serious due to the continued flow of refrigerant. For example, in the case of refrigerant leakage, controlling the shutdown of the compressor and the outdoor fan can avoid environmental pollution caused by refrigerant leakage and save energy.
  • the processor controls to keep the internal fan running, allowing the air conditioner to maintain the cooling effect by running the internal fan when the compressor and external fan are shut down. Therefore, it is avoided that abnormal refrigerant circulation has a great impact on the indoor cooling effect and affects the user experience.
  • embodiments of the present disclosure provide another method for detecting refrigerant anomalies, including:
  • the processor analyzes the refrigerant circulation situation based on Tr, Tp, Tp1 and the current status of the compressor.
  • the processor controls the compressor to stop; the processor controls the external fan to stop; the processor controls the internal fan to keep running.
  • S406 After controlling the compressor to stop, the processor determines whether the cumulative number of compressor stops is less than a preset value. If yes, go to S407; if not, go to S408.
  • the processor controls the compressor to restart.
  • the processor keeps the compressor in a shutdown state.
  • the preset value can be set according to actual needs.
  • the preset value can be set to 3 times, 2 times or less; when the refrigerant cycle abnormality detection requirements are not special.
  • the preset value can be set to 4 times, 5 times or more.
  • embodiments of the present disclosure provide another method for detecting refrigerant anomalies, including:
  • the processor determines that the refrigerant cycle is abnormal.
  • the processor It is determined that the refrigerant circulation is abnormal.
  • the processor controls the compressor to stop; the processor controls the external fan to stop; the processor controls the internal fan to keep running.
  • S506 After controlling the compressor to stop, the processor determines whether the cumulative number of compressor stops is less than 3 times. If so, enter Go to S507; if not, go to S508.
  • the processor controls the compressor to restart.
  • the detected Tr and Tp are more stable and accurate.
  • Tr ⁇ 25°C based on
  • 16°C ⁇ Tr ⁇ 25°C based on
  • the compressor may be in freeze protection or temperature shutdown state. In the case where the compressor may be in freeze protection or temperature shutdown state, the compressor is not in freeze protection or temperature shutdown state, and then it can be determined that the refrigerant cycle is abnormal.
  • This embodiment eliminates possible misjudgments during the detection process.
  • an embodiment of the present disclosure provides a device 60 for detecting refrigerant anomalies, including a processor 600 and a memory 601 .
  • the device for detecting refrigerant anomalies may also include a communication interface (Communication Interface) 602 and a bus 603.
  • the processor 600, the communication interface 602, and the memory 601 can communicate with each other through the bus 603.
  • Communication interface 602 may be used for information transmission.
  • the processor 600 can call logical instructions in the memory 601 to execute the method for detecting refrigerant anomalies in the above embodiment.
  • the above-mentioned logical instructions in the memory 601 can be implemented in the form of software functional units and can be stored in a computer-readable storage medium when sold or used as an independent product.
  • the memory 601 can be used to store software programs, computer executable programs, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure.
  • the processor 600 executes the program instructions/modules stored in the memory 601 to execute functional applications and data processing, that is, to implement the method for detecting refrigerant anomalies in the above embodiments.
  • the memory 601 may include a stored program area and a stored data area, where the stored program area may store an operating system and an application program required for at least one function; the stored data area may store data created according to the use of the terminal device, etc.
  • the memory 601 may include high-speed random access memory and may also include non-volatile memory.
  • An embodiment of the present disclosure provides an air conditioner, including the above-mentioned device for detecting refrigerant anomalies.
  • Embodiments of the present disclosure provide a storage medium that stores computer-executable instructions, and the computer-executable instructions are configured to execute the above method for detecting refrigerant anomalies.
  • An embodiment of the present disclosure provides a computer program that, when executed by a computer, causes the computer to implement the above method for detecting refrigerant anomalies.
  • Embodiments of the present disclosure provide a computer program product.
  • the computer program product includes computer instructions stored on a computer-readable storage medium.
  • the program instructions When executed by a computer, the computer implements the above-mentioned detection of refrigerant. Unusual approach.
  • the above-mentioned storage medium may be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.
  • Non-transitory storage media including: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk, etc. that can store program code media, which can also be temporary storage media.
  • 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 items.
  • the term “comprise” and its variations “comprises” and/or “comprising” etc. refer to stated features, integers, steps, operations, elements, and/or The presence of a component does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or groupings of these.
  • an element defined by the statement “comprises a" does not exclude the presence of additional identical elements in a process, method or apparatus including the stated element.
  • each embodiment may focus on its differences from other embodiments, and the same and similar parts among various embodiments may be referred to each other.
  • the relevant parts can be referred to the description of the method part.
  • each box in the flowchart or block diagram can represent a module A block, segment, or portion of code that contains one or more executable instructions for implementing a specified logical function.
  • the functions noted in the block may occur out of the order noted in the figures. For example, two consecutive blocks may actually execute substantially in parallel, or they may sometimes execute in the reverse order, depending on the functionality involved.

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Abstract

The present application relates to the technical field of smart appliances, and discloses a method for detecting a refrigerant anomaly, applied to a refrigeration operation condition of an air conditioner. The method comprises: when a continuous operation duration of a compressor is greater than or equal to a preset duration, measuring a current indoor environment temperature Tr and a current indoor coil temperature Tp; when Tr ≥ T1, analyzing a refrigerant circulation situation according to the Tr, the Tp, and an initial coil temperature Tp1; when T2 ≤ Tr < T1, analyzing a refrigerant circulation situation according to the Tr, the Tp, the Tp1, and a current state of the compressor, wherein T1 is a first temperature threshold and T2 is a second temperature threshold; and when the refrigerant circulation is abnormal, outputting prompt information of a refrigerant circulation anomaly. The method improves the accuracy of refrigerant leakage detection in a refrigeration state. The present application further discloses an apparatus for detecting a refrigerant anomaly, an air conditioner, and a storage medium.

Description

用于检测冷媒异常的方法及装置、空调器、存储介质Methods and devices, air conditioners, and storage media for detecting refrigerant abnormalities
本申请基于申请号为202211037877.9、申请日为2022年8月26日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。This application is filed based on a Chinese patent application with application number 202211037877.9 and a filing date of August 26, 2022, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby incorporated into this application as a reference.
技术领域Technical field
本申请涉及智能家电技术领域，例如涉及一种用于检测冷媒异常的方法、装置和空调器、存储介质。This application relates to the technical field of smart home appliances, for example, to a method, device, air conditioner, and storage medium for detecting refrigerant anomalies.
背景技术Background technique
目前空调器冷媒异常是在市场售后中反馈最突出也是最普遍的问题，空调器冷媒异常后***运转会处于不正常状态。空调器冷媒异常将直接影响到空调器的制冷效果，因此空调器运行过程中对冷媒异常检测非常必要。At present, the abnormality of air conditioner refrigerant is the most prominent and common problem reported in the after-sales market. After the air conditioner refrigerant is abnormal, the system operation will be in an abnormal state. Abnormal refrigerant in the air conditioner will directly affect the cooling effect of the air conditioner, so it is very necessary to detect abnormal refrigerant during the operation of the air conditioner.
为了解决空调器制冷运行工况中对冷媒异常检测的需求问题，相关技术公开了一种空调器冷媒异常检测方法。该方法包括：在***稳定后对冷媒异常进行检测，利用实际室内盘管温度分别与初始室内盘管温度和室内环境温度进行了比较和分析，检测出空调器发生冷媒异常。In order to solve the problem of the need for refrigerant abnormality detection in the refrigeration operation condition of the air conditioner, the related art discloses a method for detecting the refrigerant abnormality of the air conditioner. The method includes: detecting refrigerant anomalies after the system is stable, comparing and analyzing the actual indoor coil temperature with the initial indoor coil temperature and indoor ambient temperature respectively, and detecting refrigerant anomalies in the air conditioner.
在实现本公开实施例的过程中，发现相关技术在检测冷媒异常时，没有考虑到当前室内环境温度范围不同、压缩机所处的状态不同时，对制冷工况下冷媒异常检测结果的影响。相关技术虽然能够进行制冷工况下的冷媒异常检测，但是检测方法不灵敏，容易发生误判，冷媒异常的检测准确率较低。In the process of implementing the embodiments of the present disclosure, it was found that when detecting refrigerant anomalies, the related technology did not take into account the impact on the refrigerant anomaly detection results under refrigeration conditions when the current indoor ambient temperature range is different and the compressor is in different states. Although the related technology can detect refrigerant anomalies under refrigeration conditions, the detection method is insensitive, prone to misjudgment, and the detection accuracy of refrigerant anomalies is low.
发明内容Contents of the invention
为了对披露的实施例的一些方面有基本的理解，下面给出了简单的概括。所述概括不是泛泛评述，也不是要确定关键/重要组成元素或描绘这些实施例的保护范围，而是作为后面的详细说明的序言。In order to provide a basic understanding of some aspects of the disclosed embodiments, a simplified summary is provided below. This summary is not intended to be a general review, nor is it intended to identify key/important elements or delineate the scope of the embodiments, but is intended to serve as a prelude to the detailed description that follows.
本公开实施例提供了一种用于检测冷媒异常的方法、装置和空调器、存储介质，以提高制冷运行工况中冷媒异常检测的准确度。Embodiments of the present disclosure provide a method, device, air conditioner, and storage medium for detecting refrigerant anomalies, so as to improve the accuracy of refrigerant anomaly detection in refrigeration operating conditions.
在一些实施例中，所述方法包括：在压缩机连续运转时长大于或等于预设时长的情况下，检测当前室内环境温度Tr、当前室内盘管温度Tp；在Tr≥T1的情况下，根据Tr、Tp 和初始盘管温度Tp1分析冷媒循环的情况；在T2≤Tr＜T1的情况下，根据Tr、Tp、Tp1和压缩机当前状态分析冷媒循环的情况；在冷媒循环异常的情况下，输出冷媒循环异常的提示信息；其中T1为第一温度阈值，T2为第二温度阈值。In some embodiments, the method includes: when the continuous operation time of the compressor is greater than or equal to a preset time period, detecting the current indoor ambient temperature Tr and the current indoor coil temperature Tp; when Tr≥T1, based on Tr,Tp and the initial coil temperature Tp1 to analyze the refrigerant circulation situation; in the case of T2 ≤ Tr < T1, analyze the refrigerant circulation situation based on Tr, Tp, Tp1 and the current status of the compressor; in the case of abnormal refrigerant circulation, output the refrigerant circulation Abnormal prompt information; where T1 is the first temperature threshold and T2 is the second temperature threshold.
上述实施例中，在压缩机连续运转时长大于或等于预设时长的情况下，对当前室内环境温度处于不同温度区间分别进行了逻辑分析。在Tr≥T1的情况下，根据Tr、Tp和Tp1判断出当前空调器换热量，分析冷媒循环情况。在T2≤Tr＜T1的情况下，根据Tr、Tp和Tp1判断出当前空调器换热量，同时结合压缩机当前状态，排除检测过程中可能出现的误判情况。该检测方法减小发生误判的概率，提高制冷运行工况中冷媒异常检测的准确度。In the above embodiment, when the continuous operation time of the compressor is greater than or equal to the preset time period, a logical analysis is performed on the current indoor ambient temperature in different temperature ranges. In the case of Tr≥T1, the current heat exchange amount of the air conditioner is determined based on Tr, Tp and Tp1, and the refrigerant circulation situation is analyzed. In the case of T2≤Tr<T1, the current heat exchange amount of the air conditioner is determined based on Tr, Tp and Tp1, and combined with the current status of the compressor, possible misjudgments during the detection process are eliminated. This detection method reduces the probability of misjudgment and improves the accuracy of refrigerant abnormality detection in refrigeration operating conditions.
可选地，根据Tr、Tp和Tp1分析冷媒循环的情况，包括：如果|Tp1-Tp|≤T3，且，|Tr-Tp|≤T4，则判定为冷媒循环异常；其中，T3为第三温度阈值，T4为第四温度阈值。Optionally, analyze the refrigerant circulation situation based on Tr, Tp and Tp1, including: if |Tp1-Tp|≤T3, and |Tr-Tp|≤T4, it is determined that the refrigerant cycle is abnormal; where T3 is the third Temperature threshold, T4 is the fourth temperature threshold.
可选地，根据Tr、Tp、Tp1和压缩机当前状态分析冷媒循环的情况，包括：如果Tr、Tp和Tp1满足压缩机冻结保护或达温停机的条件，且，压缩机未处于冻结保护或未处于达温停机状态，则判定为冷媒循环异常。Optionally, analyze the refrigerant cycle situation based on Tr, Tp, Tp1 and the current status of the compressor, including: if Tr, Tp and Tp1 meet the conditions for compressor freezing protection or temperature shutdown, and the compressor is not in freezing protection or If it is not in the temperature reaching shutdown state, it is determined that the refrigerant circulation is abnormal.
可选地，Tr、Tp和Tp1满足压缩机冻结保护或达温停机的条件，包括：|Tp1-Tp|≤T5，且，|Tr-Tp|≤T5；其中，T5为第五温度阈值。Optionally, Tr, Tp and Tp1 meet the conditions for compressor freezing protection or temperature shutdown, including: |Tp1-Tp|≤T5, and |Tr-Tp|≤T5; where T5 is the fifth temperature threshold.
可选地，T3＞T5，且，T4＞T5，且，所述T3、T4、T5根据所述Tr确定。Optionally, T3>T5, and T4>T5, and the T3, T4, and T5 are determined according to the Tr.
可选地，根据所述Tr确定T3、T4、T5，包括：根据预设的对应关系，确定Tr所对应的T3、T4、T5。Optionally, determining T3, T4, and T5 according to the Tr includes: determining T3, T4, and T5 corresponding to Tr according to a preset correspondence relationship.
可选地，在冷媒循环异常的情况下，所述方法还包括：控制压缩机停机；控制外风机停机；控制内风机保持运转。Optionally, in the case of abnormal refrigerant circulation, the method further includes: controlling the compressor to stop; controlling the external fan to stop; and controlling the internal fan to keep running.
可选地，控制压缩机停机后，还包括：在所述压缩机停机次数累计小于预设值的情况下，控制压缩机重启运行；在所述压缩机停机次数累计大于或等于预设值的情况下，保持压缩机处于停机状态。Optionally, after controlling the compressor to stop, it also includes: controlling the compressor to restart when the cumulative number of compressor stops is less than a preset value; and controlling the compressor to restart when the cumulative number of compressor stops is greater than or equal to the preset value. In this case, keep the compressor in shutdown state.
在一些实施例中，所述装置应用于空调器制冷运行工况中，包括：处理器和存储有程序指令的存储器，所述处理器被配置为在运行所述程序指令时，执行如上述的用于检测冷媒异常的方法。In some embodiments, the device is used in air conditioner refrigeration operating conditions, and includes: a processor and a memory storing program instructions. The processor is configured to execute the above-mentioned steps when running the program instructions. Method for detecting refrigerant anomalies.
在一些实施例中，所述空调器包括：压缩机和换热器，还包括如上述的用于检测冷媒异常的装置。In some embodiments, the air conditioner includes a compressor and a heat exchanger, and also includes a device for detecting refrigerant anomalies as described above.
在一些实施例中，所述存储介质包括：存储有程序指令，所述程序指令在运行时，执行如上述的用于检测冷媒异常的方法。In some embodiments, the storage medium includes: stored program instructions, and when the program instructions are run, the above-mentioned method for detecting refrigerant anomalies is executed.
以上的总体描述和下文中的描述仅是示例性和解释性的，不用于限制本申请。 The above general description and the following description are exemplary and explanatory only and are not intended to limit the application.
附图说明Description of drawings
一个或多个实施例通过与之对应的附图进行示例性说明，这些示例性说明和附图并不构成对实施例的限定，附图中具有相同参考数字标号的元件示为类似的元件，附图不构成比例限制，并且其中：One or more embodiments are exemplified by corresponding drawings. These exemplary descriptions and drawings do not constitute limitations to the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings are not limited to scale and in which:
图1是空调器的结构示意图；Figure 1 is a schematic structural diagram of the air conditioner;
图2是本公开实施例提供的一个用于检测冷媒异常的方法的示意图；Figure 2 is a schematic diagram of a method for detecting refrigerant anomalies provided by an embodiment of the present disclosure;
图3是本公开实施例提供的另一个用于检测冷媒异常的方法的示意图；Figure 3 is a schematic diagram of another method for detecting refrigerant anomalies provided by an embodiment of the present disclosure;
图4是本公开实施例提供的另一个用于检测冷媒异常的方法的示意图；Figure 4 is a schematic diagram of another method for detecting refrigerant anomalies provided by an embodiment of the present disclosure;
图5是本公开实施例提供的另一个用于检测冷媒异常的方法的示意图；Figure 5 is a schematic diagram of another method for detecting refrigerant anomalies provided by an embodiment of the present disclosure;
图6是本公开实施例提供的一个用于检测冷媒异常的装置的示意图。Figure 6 is a schematic diagram of a device for detecting refrigerant anomalies provided by an embodiment of the present disclosure.
具体实施方式Detailed ways
为了能够更加详尽地了解本公开实施例的特点与技术内容，下面结合附图对本公开实施例的实现进行详细阐述，所附附图仅供参考说明之用，并非用来限定本公开实施例。在以下的技术描述中，为方便解释起见，通过多个细节以提供对所披露实施例的充分理解。然而，在没有这些细节的情况下，一个或多个实施例仍然可以实施。在其它情况下，为简化附图，熟知的结构和装置可以简化展示。In order to understand the characteristics and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. The attached drawings are for reference only and are not intended to limit the embodiments of the present disclosure. In the following technical description, for convenience of explanation, multiple details are provided 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 simplified to simplify the drawings.
本公开实施例的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便这里描述的本公开实施例的实施例。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含。The terms "first", "second", etc. in the description and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that data so used are interchangeable under appropriate circumstances for the purposes of the embodiments of the disclosure described herein. Furthermore, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion.
除非另有说明，术语“多个”表示两个或两个以上。Unless otherwise stated, the term "plurality" means two or more.
本公开实施例中，字符“/”表示前后对象是一种“或”的关系。例如，A/B表示：A或B。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 means: A or B.
术语“和/或”是一种描述对象的关联关系，表示可以存在三种关系。例如，A和/或B，表示：A或B，或，A和B这三种关系。The term "and/or" is an association relationship describing objects, indicating that three relationships can exist. For example, A and/or B means: A or B, or A and B.
术语“对应”可以指的是一种关联关系或绑定关系，A与B相对应指的是A与B之间是一种关联关系或绑定关系。The term "correspondence" can refer to an association relationship or a binding relationship. The correspondence between A and B refers to an association relationship or a binding relationship between A and B.
需要说明的是，在不冲突的情况下，本公开实施例中的实施例及实施例中的特征可以相互组合。It should be noted that, as long as there is no conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.
目前空调器冷媒异常是在市场售后中反馈最突出也是最普遍的问题，空调器冷媒异常 后***运转会处于不正常状态，空调器冷媒异常将直接影响到空调器的制冷效果，因此空调器运行过程中对冷媒异常检测非常必要。为了解决空调器制冷运行工况中对冷媒异常检测的需求问题，相关技术公开了一种空调器冷媒异常检测方法。该方法包括：在***稳定后对冷媒异常进行检测，利用实际室内盘管温度分别与初始室内盘管温度和室内环境温度进行了比较和分析，检测出空调器发生冷媒异常。但相关技术在检测冷媒异常时，没有考虑到当前室内环境温度范围不同、压缩机所处的状态不同时，对制冷工况下冷媒异常检测结果的影响。相关技术虽然能够进行制冷工况下的冷媒异常检测，但是检测方法不灵敏，容易发生误判，冷媒异常的检测准确率较低。At present, abnormal air conditioner refrigerant is the most prominent and common problem reported in the market after-sales service. Abnormal air conditioner refrigerant After the system is running, it will be in an abnormal state. Abnormal refrigerant in the air conditioner will directly affect the cooling effect of the air conditioner. Therefore, it is very necessary to detect abnormal refrigerant during the operation of the air conditioner. In order to solve the problem of the need for refrigerant abnormality detection in the refrigeration operation condition of the air conditioner, the related art discloses a method for detecting the refrigerant abnormality of the air conditioner. The method includes: detecting refrigerant anomalies after the system is stable, comparing and analyzing the actual indoor coil temperature with the initial indoor coil temperature and indoor ambient temperature respectively, and detecting refrigerant anomalies in the air conditioner. However, when the related technology detects refrigerant anomalies, it does not take into account the impact of different current indoor ambient temperature ranges and different compressor states on the refrigerant anomaly detection results under refrigeration conditions. Although the related technology can detect refrigerant anomalies under refrigeration conditions, the detection method is insensitive, prone to misjudgment, and the detection accuracy of refrigerant anomalies is low.
如图1所示，空调器通常包括制冷循环回路。其中，制冷循环回路包括压缩机11、室外换热器12、节流装置13、室内换热器14和四通阀15。空调器还包括控制制冷循环回路运行的电控装置(图中未示出)，电控装置包括处理器。处理器用于控制压缩机11、调节节流装置13和其他电控部件，从而实现空调器的各种功能。As shown in Figure 1, air conditioners usually include a refrigeration cycle. Among them, the refrigeration cycle includes a compressor 11, an outdoor heat exchanger 12, a throttling device 13, an indoor heat exchanger 14 and a four-way valve 15. The air conditioner also includes an electronic control device (not shown in the figure) that controls the operation of the refrigeration cycle, and the electronic control device includes a processor. The processor is used to control the compressor 11, the throttling device 13 and other electronic control components to implement various functions of the air conditioner.
本公开实施例提供了一种用于检测冷媒异常的方法及装置，和空调器、存储介质，以提高制冷运行工况下冷媒异常检测的准确度。Embodiments of the present disclosure provide a method and device for detecting refrigerant anomalies, an air conditioner, and a storage medium to improve the accuracy of refrigerant anomaly detection under refrigeration operating conditions.
结合图1所述的空调器，本公开实施例提供一种用于检测冷媒异常的方法。如图2所示，该方法包括：In conjunction with the air conditioner described in FIG. 1 , embodiments of the present disclosure provide a method for detecting refrigerant anomalies. As shown in Figure 2, the method includes:
S201，处理器在压缩机连续运转时长大于或等于预设时长的情况下，检测当前室内环境温度Tr、当前室内盘管温度Tp。S201: When the continuous operation time of the compressor is greater than or equal to the preset time, the processor detects the current indoor ambient temperature Tr and the current indoor coil temperature Tp.
其中，通过设置于空调器的多个温度传感器可以分别检测Tr、Tp。Among them, Tr and Tp can be detected respectively by a plurality of temperature sensors provided in the air conditioner.
用于检测Tr的温度传感器，设置于空调器室内机的进风口位置处，从而使检测得到的Tr更精准。用于检测Tp的温度传感器，设置于空调器室内机的盘管位置处，该温度传感器所检测到的实时温度作为Tp。The temperature sensor used to detect Tr is installed at the air inlet of the indoor unit of the air conditioner, so that the detected Tr can be more accurate. The temperature sensor used to detect Tp is installed at the coil position of the indoor unit of the air conditioner, and the real-time temperature detected by the temperature sensor is regarded as Tp.
压缩机连续运转时长大于或等于预设时长时，表明空调器开启制冷运行了一段时间，空调器进入稳定状态。温度传感器也进入稳定运行状态，检测到的Tr和Tp较为稳定。可选地，预设时长大于或等于20分钟(min)，检测到的Tr和Tp更加可靠。When the continuous operation time of the compressor is greater than or equal to the preset time, it indicates that the air conditioner has been running for cooling for a period of time and the air conditioner has entered a stable state. The temperature sensor has also entered a stable operating state, and the detected Tr and Tp are relatively stable. Optionally, the preset time is greater than or equal to 20 minutes (min), and the detected Tr and Tp are more reliable.
S202，在Tr≥T1的情况下，处理器根据Tr、Tp和初始盘管温度Tp1分析冷媒循环的情况。S202, when Tr≥T1, the processor analyzes the refrigerant circulation situation based on Tr, Tp and the initial coil temperature Tp1.
其中，T1为第一温度阈值。需要注意的是，设定的T1不应较低。可选地，T1≥25℃。更具体地，T1为25℃、26℃或27℃。如果T1取值小于25℃，例如，将Tr设置为23℃的情况下，空调器在制冷运行工况下可能会结霜，导致压缩机启动冻结保护进入到停机状态。另外，在T1＜23℃时，如果T1达到设定温度时也会导致压缩机进入到停机状态。因此， 将T1设定为大于或等于25℃，能够使冷媒循环的分析结果更加可靠准确。Among them, T1 is the first temperature threshold. It should be noted that the set T1 should not be low. Optionally, T1≥25℃. More specifically, T1 is 25°C, 26°C or 27°C. If the value of T1 is less than 25°C, for example, if Tr is set to 23°C, the air conditioner may frost during cooling operation, causing the compressor to activate freeze protection and enter a shutdown state. In addition, when T1 <23°C, if T1 reaches the set temperature, the compressor will also enter a shutdown state. therefore, Setting T1 to greater than or equal to 25°C can make the analysis results of the refrigerant cycle more reliable and accurate.
在Tr≥T1，且空调器制冷运行的情况下，处理器根据在此情况下Tp、Tr和Tp1表现出来的温度异常情况，可以准确的分析出冷媒循环的情况。When Tr ≥ T1 and the air conditioner is running for cooling, the processor can accurately analyze the refrigerant circulation situation based on the temperature abnormalities displayed by Tp, Tr and Tp1 in this situation.
S203，在T2≤Tr＜T1的情况下，处理器根据Tr、Tp、Tp1和压缩机当前状态分析冷媒循环的情况。S203, when T2≤Tr<T1, the processor analyzes the refrigerant circulation situation based on Tr, Tp, Tp1 and the current status of the compressor.
其中，T2为第二温度阈值。需要注意的是，空调器的最低设定温度一般为16℃。可选地，16℃≤T2＜25℃。更具体地，T2为16℃、17℃或18℃。将T2设定为大于或等于16℃，且小于25℃，能够使冷媒循环的分析结果更加可靠准确。Among them, T2 is the second temperature threshold. It should be noted that the minimum set temperature of air conditioners is generally 16°C. Optionally, 16℃≤T2<25℃. More specifically, T2 is 16°C, 17°C or 18°C. Setting T2 to be greater than or equal to 16°C and less than 25°C can make the analysis results of the refrigerant cycle more reliable and accurate.
在T2≤Tr＜T1，且空调器制冷运行的情况下，Tr较低，需要考虑压缩机当前状态，避免在判断分析时被压缩机状态干扰发生误判。处理器根据在此情况下Tp、Tr和Tp1表现出来的温度异常情况，通过结合压缩机当前状态，可以准确的分析出冷媒循环的情况。When T2 ≤ Tr < T1 and the air conditioner is running for cooling, Tr is low, and the current status of the compressor needs to be considered to avoid misjudgment caused by interference from the compressor status during judgment and analysis. The processor can accurately analyze the refrigerant circulation situation based on the temperature anomalies displayed by Tp, Tr and Tp1 in this case, combined with the current status of the compressor.
S204，在冷媒循环异常的情况下，处理器输出冷媒循环异常的提示信息。S204: When the refrigerant cycle is abnormal, the processor outputs a prompt message indicating that the refrigerant cycle is abnormal.
上述实施例中，在压缩机连续运转时长大于或等于预设时长的情况下，对不同Tr范围分别进行逻辑分析。在Tr≥T1的情况下，根据Tr、Tp和Tp1判断出当前空调器换热量，分析冷媒循环情况。在T2≤Tr＜T1的情况下，根据Tr、Tp和Tp1判断出当前空调器换热量，同时结合压缩机当前状态，排除检测过程中可能出现的误判情况。该检测方法能够减小发生误判的概率，提高制冷运行工况中冷媒异常检测的准确度。In the above embodiment, when the continuous operation time of the compressor is greater than or equal to the preset time, logical analysis is performed on different Tr ranges. In the case of Tr≥T1, the current heat exchange amount of the air conditioner is determined based on Tr, Tp and Tp1, and the refrigerant circulation situation is analyzed. In the case of T2≤Tr<T1, the current heat exchange amount of the air conditioner is determined based on Tr, Tp and Tp1, and combined with the current status of the compressor, possible misjudgments during the detection process are eliminated. This detection method can reduce the probability of misjudgment and improve the accuracy of refrigerant abnormality detection in refrigeration operating conditions.
可选地，处理器输出冷媒循环异常的提示信息包括：通过指示灯提示冷媒循环异常。例如，指示灯闪烁，或者指示灯显示特定颜色。Optionally, the processor outputting prompt information indicating the abnormality of the refrigerant circulation includes: prompting the abnormality of the refrigerant circulation through an indicator light. For example, the light flashes, or the light displays a specific color.
可选地，处理器输出冷媒循环异常的提示信息包括：通过显示屏提示显示冷媒循环异常的故障代码预设时间；或者，显示屏上直接显示冷媒循环异常预设时间。在提示信息后将故障信息记录到存储器。更具体地，预设时间为3min-6min。这样，使判断结果更加稳定，同时能够将冷媒循环异常的信息及时直观的反馈给用户。Optionally, the processor outputs prompt information indicating that the refrigerant cycle is abnormal, including: prompting and displaying the preset time of the fault code of the refrigerant cycle abnormality through the display screen; or, directly displaying the preset time of the refrigerant cycle abnormality on the display screen. After the prompt message, the fault information is recorded into the memory. More specifically, the preset time is 3min-6min. In this way, the judgment results are more stable, and at the same time, information on abnormal refrigerant circulation can be fed back to the user in a timely and intuitive manner.
可选地，处理器根据Tr、Tp和Tp1分析冷媒循环的情况，包括：如果|Tp1-Tp|≤T3，且，|Tr-Tp|≤T4，则判定为冷媒循环异常。Optionally, the processor analyzes the refrigerant circulation situation based on Tr, Tp and Tp1, including: if |Tp1-Tp|≤T3, and |Tr-Tp|≤T4, it is determined that the refrigerant cycle is abnormal.
其中，T3为第三温度阈值，T4为第四温度阈值。需要注意的是，设定的T3、T4不应过大也不应过小。可选地，T3可以但不限定为5℃到7℃之间，T4可以但不限定为5℃到7℃之间。更具体地，T3为5℃、6℃或7℃。T4为5℃、6℃或7℃。如果T3、T4设定的过大，则Tp与Tp1的差值绝对值虽可以小于或等于T3，Tp与Tr的差值绝对值虽可以小于或等于T4，但此时并不能说明当前空调器换热量较低。在这种情况下，空调器可能未发生冷媒循环异常，容易发生误判。如果T3、T4设定的过小，则难以检测到Tp与Tp1、 Tr的差值，即难以检测出冷媒循环异常。因此，将T3、T4设定在该温度区间内，可以较好的实现冷媒循环异常检测，既不会发生误判，也不会在冷媒循环异常时发生漏检，保证冷媒循环异常检测结果的准确性。Among them, T3 is the third temperature threshold, and T4 is the fourth temperature threshold. It should be noted that the set T3 and T4 should not be too large or too small. Alternatively, T3 may be, but is not limited to, between 5°C and 7°C, and T4 may be, but is not limited to, between 5°C and 7°C. More specifically, T3 is 5°C, 6°C or 7°C. T4 is 5℃, 6℃ or 7℃. If T3 and T4 are set too large, the absolute value of the difference between Tp and Tp1 can be less than or equal to T3, and the absolute value of the difference between Tp and Tr can be less than or equal to T4, but this does not mean that the current air conditioner The heat exchange rate is low. In this case, the air conditioner may not have abnormal refrigerant circulation, and misjudgment may easily occur. If T3 and T4 are set too small, it will be difficult to detect Tp and Tp1, The difference in Tr makes it difficult to detect refrigerant circulation abnormalities. Therefore, setting T3 and T4 within this temperature range can better achieve refrigerant cycle abnormality detection, and neither misjudgment nor missed detection will occur when the refrigerant cycle is abnormal, ensuring the accuracy of the refrigerant cycle abnormality detection results. accuracy.
如果冷媒循环正常，则在空调器制冷运行工况下满足Tr≥T1时，Tp1和Tp的差值较大，Tp和Tr的差值也较大。If the refrigerant cycle is normal, when Tr ≥ T1 is satisfied under the cooling operation condition of the air conditioner, the difference between Tp1 and Tp will be large, and the difference between Tp and Tr will also be large.
在空调器制冷运行工况下满足Tr≥T1时，如果Tp1和Tp的差值较小，且，Tp和Tr的差值也较小，则可以判定空调器发生冷媒循环异常。When Tr ≥ T1 is satisfied under the cooling operation condition of the air conditioner, if the difference between Tp1 and Tp is small, and the difference between Tp and Tr is also small, it can be determined that the air conditioner has a refrigerant cycle abnormality.
可选地，处理器根据Tr、Tp、Tp1和压缩机当前状态分析冷媒循环的情况，包括：如果Tr、Tp和Tp1满足压缩机冻结保护或达温停机的条件，且，压缩机未处于冻结保护或未处于达温停机状态，则判定为冷媒循环异常。Optionally, the processor analyzes the refrigerant cycle situation based on Tr, Tp, Tp1 and the current status of the compressor, including: if Tr, Tp and Tp1 meet the conditions for compressor freezing protection or temperature shutdown, and the compressor is not in freezing state Protection or not in the temperature shutdown state, it is determined that the refrigerant circulation is abnormal.
如果冷媒循环正常，则在空调器制冷运行工况下满足压缩机冻结保护或达温停机的条件时，压缩机处于冻结保护或达温停机的状态。If the refrigerant circulation is normal, when the conditions for compressor freeze protection or temperature shutdown are met under the refrigeration operating conditions of the air conditioner, the compressor will be in the state of freeze protection or temperature shutdown.
在空调器制冷运行工况下满足压缩机冻结保护或达温停机的条件时，如果压缩机未处于冻结保护或达温停机的状态，则可以判定空调器发生冷媒循环异常。When the conditions for compressor freeze protection or temperature shutdown are met under the refrigeration operating conditions of the air conditioner, if the compressor is not in the freeze protection or temperature shutdown state, it can be determined that the air conditioner has a refrigerant cycle abnormality.
可选地，Tr、Tp和Tp1满足压缩机冻结保护或达温停机的条件，包括：|Tp1-Tp|≤T5，且，|Tr-Tp|≤T5。Optionally, Tr, Tp and Tp1 meet the conditions for compressor freeze protection or temperature shutdown, including: |Tp1-Tp|≤T5, and |Tr-Tp|≤T5.
其中，T5为第五温度阈值。需要注意的是，设定的T5不应过大也不应过小。可选地，T5可以但不限定为2℃到4℃之间。更具体地，T5为2℃、3℃或4℃。如果T5设定的过大，则Tp与Tp1、Tr的差值绝对值虽可以小于或等于T5，但此时并不能说明当前空调器换热量较低。在这种情况下，空调器可能未发生冷媒循环异常，容易发生误判。如果T5设定的过小，则难以检测到Tp与Tp1、Tr的差值，即难以检测出冷媒循环异常。因此，将T5设定在该温度区间内，可以较好的实现冷媒循环异常检测，既不会发生误判，也不会在冷媒循环异常时发生漏检，保证冷媒循环异常检测结果的准确性。Among them, T5 is the fifth temperature threshold. It should be noted that the set T5 should not be too large or too small. Alternatively, T5 may be, but is not limited to, between 2°C and 4°C. More specifically, T5 is 2°C, 3°C or 4°C. If T5 is set too large, although the absolute value of the difference between Tp and Tp1 and Tr can be less than or equal to T5, this does not mean that the current heat exchange rate of the air conditioner is low. In this case, the air conditioner may not have abnormal refrigerant circulation, and misjudgment may easily occur. If T5 is set too small, it will be difficult to detect the difference between Tp and Tp1 and Tr, that is, it will be difficult to detect refrigerant cycle abnormalities. Therefore, setting T5 within this temperature range can better detect refrigerant cycle anomalies, and neither misjudgment nor missed detection will occur when refrigerant cycle anomalies occur, ensuring the accuracy of refrigerant cycle anomaly detection results. .
在空调器制冷运行的工况下，当出现Tr较低，且，Tp1和Tp的差值绝对值较小，且，Tp和Tr的差值绝对值也较小的情况，表明空调器当前产生的换热效果较差，进而可以判断可能会出现压缩机冻结保护或达温停机的情况。Under the cooling operation condition of the air conditioner, when Tr is low, and the absolute value of the difference between Tp1 and Tp is small, and the absolute value of the difference between Tp and Tr is also small, it indicates that the air conditioner is currently generating The heat exchange effect is poor, and it can be judged that the compressor freeze protection or temperature shutdown may occur.
可选地，T3＞T5，T4＞T5，且，T3、T4、T5根据Tr确定。Optionally, T3>T5, T4>T5, and T3, T4, and T5 are determined according to Tr.
Tr处于不同的温度区间时，Tp与Tr的差值绝对值不同。Tr越高，表明空调器在制冷运行工况下的换热效果越好，则Tp与Tr的差值绝对值越大。根据Tr确定T3、T4、T5的取值，在Tr处于不同的温度范围时，分别设定T3、T4、T5，能够使检测结果更加准确灵敏。 When Tr is in different temperature ranges, the absolute value of the difference between Tp and Tr is different. The higher the Tr, the better the heat exchange effect of the air conditioner under cooling operating conditions, and the greater the absolute value of the difference between Tp and Tr. Determine the values of T3, T4, and T5 based on Tr. When Tr is in different temperature ranges, setting T3, T4, and T5 respectively can make the detection results more accurate and sensitive.
可选地，处理器根据Tr确定T3、T4、T5，包括：处理器根据预设的对应关系，确定Tr所对应的T3、T4、T5。Optionally, the processor determines T3, T4, and T5 according to Tr, including: the processor determines T3, T4, and T5 corresponding to Tr according to a preset correspondence relationship.
更具体地，表1中示出一种可选的Tr和T3、T4的对应关系。表2中示出一种可选的Tr和T5的对应关系。
More specifically, Table 1 shows an optional correspondence between Tr and T3 and T4. Table 2 shows an optional correspondence between Tr and T5.
表1
Table 1
表2Table 2
结合图3所示，本公开实施例提供另一种用于检测冷媒异常的方法，包括：As shown in FIG. 3 , embodiments of the present disclosure provide another method for detecting refrigerant anomalies, including:
S301，处理器在压缩机连续运转时长大于或等于预设时长的情况下，检测当前室内环境温度Tr、当前室内盘管温度Tp。S301: When the continuous operation time of the compressor is greater than or equal to the preset time, the processor detects the current indoor ambient temperature Tr and the current indoor coil temperature Tp.
S302，在Tr≥T1的情况下，处理器根据Tr、Tp和初始盘管温度Tp1分析冷媒循环的情况。S302, when Tr≥T1, the processor analyzes the refrigerant circulation situation based on Tr, Tp and the initial coil temperature Tp1.
S303，在T2≤Tr＜T1的情况下，处理器根据Tr、Tp、Tp1和压缩机当前状态分析冷媒循环的情况。S303, when T2≤Tr<T1, the processor analyzes the refrigerant circulation situation based on Tr, Tp, Tp1 and the current status of the compressor.
S304，在冷媒循环异常的情况下，处理器输出冷媒循环异常的提示信息。S304: When the refrigerant cycle is abnormal, the processor outputs a prompt message indicating that the refrigerant cycle is abnormal.
S305，处理器控制压缩机停机；处理器控制外风机停机；处理器控制内风机保持运转。S305, the processor controls the compressor to stop; the processor controls the external fan to stop; the processor controls the internal fan to keep running.
在判定为冷媒循环异常的情况下，处理器控制压缩机停机和外风机停机，能够保证空调器在稳定和安全的环境中运行，避免由于冷媒继续流动造成冷媒循环异常问题更加严重。例如，在冷媒泄露的情况下，控制压缩机停机和外风机停机，能够避免冷媒泄露对环境带来污染、节约能源。处理器控制保持内风机运转，能够使空调器在压缩机和外风机停机的情况下通过内风机运行保持制冷效果。因此，避免了冷媒循环异常的情况对室内的制冷效果产生太大的影响，影响用户的使用体验。 When it is determined that the refrigerant cycle is abnormal, the processor controls the compressor to stop and the outdoor fan to stop, which can ensure that the air conditioner operates in a stable and safe environment and avoid the refrigerant cycle abnormality from becoming more serious due to the continued flow of refrigerant. For example, in the case of refrigerant leakage, controlling the shutdown of the compressor and the outdoor fan can avoid environmental pollution caused by refrigerant leakage and save energy. The processor controls to keep the internal fan running, allowing the air conditioner to maintain the cooling effect by running the internal fan when the compressor and external fan are shut down. Therefore, it is avoided that abnormal refrigerant circulation has a great impact on the indoor cooling effect and affects the user experience.
结合图4所示，本公开实施例提供另一种用于检测冷媒异常的方法，包括：As shown in FIG. 4 , embodiments of the present disclosure provide another method for detecting refrigerant anomalies, including:
S401，处理器在压缩机连续运转时长大于或等于预设时长的情况下，检测当前室内环境温度Tr、当前室内盘管温度Tp。S401: When the continuous operation time of the compressor is greater than or equal to the preset time, the processor detects the current indoor ambient temperature Tr and the current indoor coil temperature Tp.
S402，在Tr≥T1的情况下，处理器根据Tr、Tp和初始盘管温度Tp1分析冷媒循环的情况。S402, when Tr≥T1, the processor analyzes the refrigerant circulation situation based on Tr, Tp and the initial coil temperature Tp1.
S403，在T2≤Tr＜T1的情况下，处理器根据Tr、Tp、Tp1和压缩机当前状态分析冷媒循环的情况。S403, when T2≤Tr<T1, the processor analyzes the refrigerant circulation situation based on Tr, Tp, Tp1 and the current status of the compressor.
S404，在冷媒循环异常的情况下，处理器输出冷媒循环异常的提示信息。S404: When the refrigerant cycle is abnormal, the processor outputs a prompt message indicating that the refrigerant cycle is abnormal.
S405，处理器控制压缩机停机；处理器控制外风机停机；处理器控制内风机保持运转。S405, the processor controls the compressor to stop; the processor controls the external fan to stop; the processor controls the internal fan to keep running.
S406，控制压缩机停机后，处理器判断压缩机停机次数累计是否小于预设值。若是，进入S407；若否，进入S408。S406: After controlling the compressor to stop, the processor determines whether the cumulative number of compressor stops is less than a preset value. If yes, go to S407; if not, go to S408.
S407，处理器控制压缩机重启运行。S407, the processor controls the compressor to restart.
S408，处理器保持压缩机处于停机状态。S408, the processor keeps the compressor in a shutdown state.
为进一步确认空调器发生冷媒循环异常，可以再次启动重复进行以上判断，直到压缩机停机次数累计大于或等于预设值。通过根据以上条件判定为冷媒循环异常的次数较多，表明冷媒循环异常的可能性较大。这样，对冷媒循环异常检测多次，检测结果更加准确可靠。当检测结果确认为冷媒循环异常时，应该保持压缩机停机，避免由于冷媒继续流动造成冷媒循环异常问题更加严重。在提示信息后将故障信息记录到存储器，便于售后维修。To further confirm that the air conditioner has abnormal refrigerant circulation, you can start it again and repeat the above judgment until the cumulative number of compressor stops is greater than or equal to the preset value. If the number of times it is determined that the refrigerant cycle is abnormal based on the above conditions is high, it indicates that the refrigerant cycle abnormality is more likely. In this way, refrigerant circulation abnormalities are detected multiple times, and the detection results are more accurate and reliable. When the test result confirms that the refrigerant cycle is abnormal, the compressor should be kept shut down to avoid the refrigerant cycle abnormality from becoming more serious due to the continued flow of refrigerant. After the prompt message, the fault information is recorded into the memory to facilitate after-sales maintenance.
更具体地，预设值可以根据实际需求进行设定，当冷媒循环异常检测要求较为严格时，预设值可以设定为3次、2次或更少；当冷媒循环异常检测用要求不是特别严格时，预设值可以设定为4次、5次或更多，当发生较多次冷媒循环异常时，保持压缩机处于停机状态。More specifically, the preset value can be set according to actual needs. When the refrigerant cycle abnormality detection requirements are stricter, the preset value can be set to 3 times, 2 times or less; when the refrigerant cycle abnormality detection requirements are not special. When strict, the preset value can be set to 4 times, 5 times or more. When a large number of refrigerant cycle abnormalities occur, the compressor is kept in a shutdown state.
结合图5所示，本公开实施例提供另一种用于检测冷媒异常的方法，包括：As shown in FIG. 5 , embodiments of the present disclosure provide another method for detecting refrigerant anomalies, including:
S501，处理器在压缩机连续运转时长大于或等于20min的情况下，检测当前室内环境温度Tr、当前室内盘管温度Tp。S501: When the continuous operation time of the compressor is greater than or equal to 20 minutes, the processor detects the current indoor ambient temperature Tr and the current indoor coil temperature Tp.
S502，Tr≥25℃，且，|Tp1-Tp|≤5℃，且，|Tr-Tp|≤5℃，处理器则判定为冷媒循环异常。S502, Tr≥25℃, and |Tp1-Tp|≤5℃, and |Tr-Tp|≤5℃, the processor determines that the refrigerant cycle is abnormal.
S503，16℃≤Tr＜25℃，且，|Tp1-Tp|≤2℃，且，|Tr-Tp|≤2℃，且，压缩机未处于冻结保护或未处于达温停机状态，处理器则判定为冷媒循环异常。S503, 16℃ ≤ Tr < 25℃, and |Tp1-Tp| ≤ 2℃, and |Tr-Tp| ≤ 2℃, and the compressor is not in freeze protection or not in the temperature shutdown state, the processor It is determined that the refrigerant circulation is abnormal.
S504，在冷媒循环异常的情况下，处理器输出冷媒循环异常的提示信息。S504: When the refrigerant cycle is abnormal, the processor outputs a prompt message indicating that the refrigerant cycle is abnormal.
S505，处理器控制压缩机停机；处理器控制外风机停机；处理器控制内风机保持运转。S505, the processor controls the compressor to stop; the processor controls the external fan to stop; the processor controls the internal fan to keep running.
S506，控制压缩机停机后，处理器判断压缩机停机次数是否累计小于3次。若是，进 入S507；若否，进入S508。S506: After controlling the compressor to stop, the processor determines whether the cumulative number of compressor stops is less than 3 times. If so, enter Go to S507; if not, go to S508.
S507，处理器控制压缩机重启运行。S507, the processor controls the compressor to restart.
S508，处理器保持压缩机处于停机状态。S508, the processor keeps the compressor in the shutdown state.
上述实施例中，在压缩机连续运转时长大于或等于20min的情况下，检测到的Tr、Tp更加稳定准确。在Tr≥25℃的情况下，根据|Tp1-Tp|≤5℃，且，|Tr-Tp|≤5℃，判断出当前空调器的换热效果较差，进而可以判定为冷媒循环异常。在16℃≤Tr＜25℃的情况下，根据|Tp1-Tp|≤2℃，且，|Tr-Tp|≤2℃，判断出压缩机可能处于冻结保护或达温停机状态。在压缩机可能处于冻结保护或达温停机状态的情况下，压缩机未处于冻结保护或未处于达温停机状态，进而可以判定为冷媒循环异常。该实施例排除了检测过程中可能出现的误判情况。In the above embodiment, when the continuous operation time of the compressor is greater than or equal to 20 minutes, the detected Tr and Tp are more stable and accurate. When Tr≥25℃, based on |Tp1-Tp|≤5℃, and |Tr-Tp|≤5℃, it is judged that the heat exchange effect of the current air conditioner is poor, and then it can be judged that the refrigerant cycle is abnormal. When 16℃ ≤ Tr < 25℃, based on |Tp1-Tp| ≤ 2℃, and |Tr-Tp| ≤ 2℃, it is judged that the compressor may be in freeze protection or temperature shutdown state. In the case where the compressor may be in freeze protection or temperature shutdown state, the compressor is not in freeze protection or temperature shutdown state, and then it can be determined that the refrigerant cycle is abnormal. This embodiment eliminates possible misjudgments during the detection process.
另外，判断压缩机停机次数是否累计小于3次，目的是为进一步确认空调器发生冷媒循环异常。在小于3次的情况下再次重复进行以上判断，直到压缩机停机次数累计大于或等于3次。该方法灵敏可靠，能够减小发生误判的概率，提高制冷运行工况中冷媒异常检测的准确度。In addition, it is judged whether the total number of compressor shutdowns is less than 3 times in order to further confirm that the air conditioner has abnormal refrigerant circulation. If it is less than 3 times, repeat the above judgment again until the cumulative number of compressor stops is greater than or equal to 3 times. This method is sensitive and reliable, can reduce the probability of misjudgment, and improve the accuracy of refrigerant abnormality detection in refrigeration operating conditions.
结合图6，本公开实施例提供一种用于检测冷媒异常的装置60，包括处理器(processor)600和存储器(memory)601。可选地，该用于检测冷媒异常的装置还可以包括通信接口(Communication Interface)602和总线603。其中，处理器600、通信接口602、存储器601可以通过总线603完成相互间的通信。通信接口602可以用于信息传输。处理器600可以调用存储器601中的逻辑指令，以执行上述实施例的用于检测冷媒异常的方法。With reference to FIG. 6 , an embodiment of the present disclosure provides a device 60 for detecting refrigerant anomalies, including a processor 600 and a memory 601 . Optionally, the device for detecting refrigerant anomalies may also include a communication interface (Communication Interface) 602 and a bus 603. Among them, the processor 600, the communication interface 602, and the memory 601 can communicate with each other through the bus 603. Communication interface 602 may be used for information transmission. The processor 600 can call logical instructions in the memory 601 to execute the method for detecting refrigerant anomalies in the above embodiment.
此外，上述的存储器601中的逻辑指令可以通过软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。In addition, the above-mentioned logical instructions in the memory 601 can be implemented in the form of software functional units and can be stored in a computer-readable storage medium when sold or used as an independent product.
存储器601作为一种存储介质，可用于存储软件程序、计算机可执行程序，如本公开实施例中的方法对应的程序指令/模块。处理器600通过运行存储在存储器601中的程序指令/模块，从而执行功能应用以及数据处理，即实现上述实施例中用于检测冷媒异常的方法。As a storage medium, the memory 601 can be used to store software programs, computer executable programs, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 600 executes the program instructions/modules stored in the memory 601 to execute functional applications and data processing, that is, to implement the method for detecting refrigerant anomalies in the above embodiments.
存储器601可包括存储程序区和存储数据区，其中，存储程序区可存储操作***、至少一个功能所需的应用程序；存储数据区可存储根据终端设备的使用所创建的数据等。此外，存储器601可以包括高速随机存取存储器，还可以包括非易失性存储器。The memory 601 may include a stored program area and a stored data area, where the stored program area may store an operating system and an application program required for at least one function; the stored data area may store data created according to the use of the terminal device, etc. In addition, the memory 601 may include high-speed random access memory and may also include non-volatile memory.
本公开实施例提供了一种空调器，包含上述的用于检测冷媒异常的装置。An embodiment of the present disclosure provides an air conditioner, including the above-mentioned device for detecting refrigerant anomalies.
本公开实施例提供了一种存储介质，存储有计算机可执行指令，所述计算机可执行指令设置为执行上述用于检测冷媒异常的方法。Embodiments of the present disclosure provide a storage medium that stores computer-executable instructions, and the computer-executable instructions are configured to execute the above method for detecting refrigerant anomalies.
本公开实施例提供了一种计算机程序，当所述计算机程序被计算机执行时，使所述计算机实现上述用于检测冷媒异常的方法。 An embodiment of the present disclosure provides a computer program that, when executed by a computer, causes the computer to implement the above method for detecting refrigerant anomalies.
本公开实施例提供了一种计算机程序产品，所述计算机程序产品包括存储在计算机可读存储介质上的计算机指令，当所述程序指令被计算机执行时，使所述计算机实现上述用于检测冷媒异常的方法。Embodiments of the present disclosure provide a computer program product. The computer program product includes computer instructions stored on a computer-readable storage medium. When the program instructions are executed by a computer, the computer implements the above-mentioned detection of refrigerant. Unusual approach.
上述的存储介质可以是暂态计算机可读存储介质，也可以是非暂态计算机可读存储介质。非暂态存储介质，包括：U盘、移动硬盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等多种可以存储程序代码的介质，也可以是暂态存储介质。The above-mentioned storage medium may be a transient computer-readable storage medium or a non-transitory computer-readable storage medium. Non-transitory storage media, including: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk, etc. that can store program code media, which can also be temporary storage media.
以上描述和附图充分地示出了本公开的实施例，以使本领域的技术人员能够实践它们。其他实施例可以包括结构的、逻辑的、电气的、过程的以及其他的改变。实施例仅代表可能的变化。除非明确要求，否则单独的部件和功能是可选地，并且操作的顺序可以变化。一些实施例的部分和特征可以被包括在或替换其他实施例的部分和特征。而且，本申请中使用的用词仅用于描述实施例并且不用于限制权利要求。如在实施例以及权利要求的描述中使用的，除非上下文清楚地表明，否则单数形式的“一个”(a)、“一个”(an)和“所述”(the)旨在同样包括复数形式。类似地，如在本申请中所使用的术语“和/或”是指包含一个或一个以上相关联的列出的任何以及所有可能的组合。另外，当用于本申请中时，术语“包括”(comprise)及其变型“包括”(comprises)和/或包括(comprising)等指陈述的特征、整体、步骤、操作、元素，和/或组件的存在，但不排除一个或一个以上其它特征、整体、步骤、操作、元素、组件和/或这些的分组的存在或添加。在没有更多限制的情况下，由语句“包括一个…”限定的要素，并不排除在包括所述要素的过程、方法或者设备中还存在另外的相同要素。本文中，每个实施例重点说明的可以是与其他实施例的不同之处，各个实施例之间相同相似部分可以互相参见。对于实施例公开的方法、产品等而言，如果其与实施例公开的方法部分相对应，那么相关之处可以参见方法部分的描述。The foregoing description and drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or substituted for those of other embodiments. Furthermore, the words used in this application are used only to describe the embodiments and not to limit 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 dictates 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 items. In addition, when used in this application, the term "comprise" and its variations "comprises" and/or "comprising" etc. refer to stated features, integers, steps, operations, elements, and/or The presence of a component does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or groupings of these. Without further limitation, an element defined by the statement "comprises a..." does not exclude the presence of additional identical elements in a process, method or apparatus including the stated element. In this article, each embodiment may focus on its differences from other embodiments, and the same and similar parts among various embodiments may be referred to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method part disclosed in the embodiment, then the relevant parts can be referred to the description of the method part.
本领域技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，可以取决于技术方案的特定应用和设计约束条件。所述技术人员可以对每个特定的应用来使用不同方法以实现所描述的功能，但是这种实现不应认为超出本公开实施例的范围。所述技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的***、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented with electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software may depend on the specific application and design constraints of the technical solution. The skilled person may use different methods to implement the described functionality for each specific application, but such implementations should not be considered to be beyond the scope of the disclosed embodiments. The skilled person can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, devices and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be described again here.
附图中的流程图和框图显示了根据本公开实施例的***、方法和计算机程序产品的可能实现的体系架构、功能和操作。在这点上，流程图或框图中的每个方框可以代表一个模 块、程序段或代码的一部分，所述模块、程序段或代码的一部分包含一个或多个用于实现规定的逻辑功能的可执行指令。在有些作为替换的实现中，方框中所标注的功能也可以以不同于附图中所标注的顺序发生。例如，两个连续的方框实际上可以基本并行地执行，它们有时也可以按相反的顺序执行，这可以依所涉及的功能而定。在附图中的流程图和框图所对应的描述中，不同的方框所对应的操作或步骤也可以以不同于描述中所披露的顺序发生，有时不同的操作或步骤之间不存在特定的顺序。例如，两个连续的操作或步骤实际上可以基本并行地执行，它们有时也可以按相反的顺序执行，这可以依所涉及的功能而定。框图和/或流程图中的每个方框、以及框图和/或流程图中的方框的组合，可以用执行规定的功能或动作的专用的基于硬件的***来实现，或者可以用专用硬件与计算机指令的组合来实现。 The flowcharts 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 box in the flowchart or block diagram can represent a module A block, segment, or portion of code that contains one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two consecutive blocks may actually execute substantially in parallel, or they may sometimes execute in the reverse order, depending on the functionality involved. In the descriptions corresponding to the flowcharts and block diagrams in the accompanying drawings, operations or steps corresponding to different blocks may also occur in a sequence different from that disclosed in the description, and sometimes there is no specific distinction between different operations or steps. order. For example, two consecutive operations or steps may actually be performed substantially in parallel, or they may sometimes be performed in reverse order, depending on the functionality involved. Each block in the block diagram and/or flowchart illustration, and combinations of blocks in the block diagram and/or flowchart illustration, may be implemented by special purpose hardware-based systems that perform the specified functions or actions, or may be implemented using special purpose hardware implemented in combination with computer instructions.

Claims (13)

  1. 一种用于检测冷媒异常的方法，应用于空调器制冷运行工况中，其特征在于，包括：A method for detecting refrigerant anomalies, applied in the refrigeration operating conditions of air conditioners, is characterized by including:
    在压缩机连续运转时长大于或等于预设时长的情况下，检测当前室内环境温度Tr、当前室内盘管温度Tp；When the continuous operation time of the compressor is greater than or equal to the preset time, the current indoor ambient temperature Tr and the current indoor coil temperature Tp are detected;
    在Tr≥T1的情况下，根据Tr、Tp和初始盘管温度Tp1分析冷媒循环的情况；In the case of Tr≥T1, analyze the refrigerant circulation situation based on Tr, Tp and initial coil temperature Tp1;
    在T2≤Tr＜T1的情况下，根据Tr、Tp、Tp1和压缩机当前状态分析冷媒循环的情况；In the case of T2≤Tr<T1, analyze the refrigerant circulation situation based on Tr, Tp, Tp1 and the current status of the compressor;
    在冷媒循环异常的情况下，输出冷媒循环异常的提示信息；In the case of abnormal refrigerant circulation, a prompt message indicating abnormal refrigerant circulation is output;
    其中，T1为第一温度阈值，T2为第二温度阈值。Wherein, T1 is the first temperature threshold, and T2 is the second temperature threshold.
  2. 根据权利要求1所述的方法，其特征在于，根据Tr、Tp和Tp1分析冷媒循环的情况，包括：The method according to claim 1, characterized in that analyzing the refrigerant circulation situation according to Tr, Tp and Tp1 includes:
    如果|Tp1-Tp|≤T3，且，|Tr-Tp|≤T4，则判定为冷媒循环异常；If |Tp1-Tp|≤T3, and |Tr-Tp|≤T4, it is determined that the refrigerant circulation is abnormal;
    其中，T3为第三温度阈值，T4为第四温度阈值。Among them, T3 is the third temperature threshold, and T4 is the fourth temperature threshold.
  3. 根据权利要求2所述的方法，其特征在于，根据Tr、Tp、Tp1和压缩机当前状态分析冷媒循环的情况，包括：The method according to claim 2, characterized in that analyzing the refrigerant circulation situation based on Tr, Tp, Tp1 and the current state of the compressor includes:
    如果Tr、Tp和Tp1满足压缩机冻结保护或达温停机的条件，且，压缩机未处于冻结保护或未处于达温停机状态，则判定为冷媒循环异常。If Tr, Tp and Tp1 meet the conditions for compressor freeze protection or temperature shutdown, and the compressor is not in freeze protection or temperature shutdown state, it is determined that the refrigerant cycle is abnormal.
  4. 根据权利要求3所述的方法，其特征在于，Tr、Tp和Tp1满足压缩机冻结保护或达温停机的条件，包括：The method according to claim 3, characterized in that Tr, Tp and Tp1 meet the conditions for compressor freezing protection or temperature shutdown, including:
    |Tp1-Tp|≤T5，且，|Tr-Tp|≤T5；|Tp1-Tp|≤T5, and |Tr-Tp|≤T5;
    其中，T5为第五温度阈值。Among them, T5 is the fifth temperature threshold.
  5. 根据权利要求4所述的方法，其特征在于，T3＞T5，且，T4＞T5，且，所述T3、T4、T5根据所述Tr确定。The method according to claim 4, characterized in that T3>T5, and T4>T5, and the T3, T4, and T5 are determined according to the Tr.
  6. 根据权利要求5所述的方法，其特征在于，根据所述Tr确定T3、T4、T5，包括：The method according to claim 5, characterized in that determining T3, T4, and T5 according to the Tr includes:
    根据预设的对应关系，确定Tr所对应的T3、T4、T5。According to the preset correspondence relationship, T3, T4, and T5 corresponding to Tr are determined.
  7. 根据权利要求1至6任一项所述的方法，其特征在于，在冷媒循环异常的情况下，所述方法还包括：The method according to any one of claims 1 to 6, characterized in that, in the case of abnormal refrigerant circulation, the method further includes:
    控制压缩机停机；Control compressor shutdown;
    控制外风机停机； Control the outdoor fan to stop;
    控制内风机保持运转。Control the internal fan to keep running.
  8. 根据权利要求7所述的方法，其特征在于，控制压缩机停机后，还包括：The method according to claim 7, characterized in that after controlling the compressor to stop, it further includes:
    在所述压缩机停机次数累计小于预设值的情况下，控制压缩机重启运行；When the cumulative number of compressor shutdowns is less than the preset value, control the compressor to restart;
    在所述压缩机停机次数累计大于或等于预设值的情况下，保持压缩机处于停机状态。When the cumulative number of compressor stops is greater than or equal to the preset value, the compressor is kept in the stopped state.
  9. 一种用于检测冷媒异常的装置，应用于空调器制冷运行工况中，包括处理器和存储有程序指令的存储器，其特征在于，所述处理器被配置为在运行所述程序指令时，执行如权利要求1至8任一项所述的用于检测冷媒异常的方法。A device for detecting refrigerant anomalies, used in air conditioner refrigeration operating conditions, including a processor and a memory storing program instructions, characterized in that the processor is configured to when running the program instructions, The method for detecting refrigerant abnormality according to any one of claims 1 to 8 is performed.
  10. 一种空调器，包括压缩机和换热器，其特征在于，还包括如权利要求9所述的用于检测冷媒异常的装置。An air conditioner includes a compressor and a heat exchanger, and is characterized in that it further includes a device for detecting refrigerant anomalies as claimed in claim 9.
  11. 一种存储介质，存储有程序指令，其特征在于，所述程序指令在运行时，执行如权利要求1至8任一项所述的用于检测冷媒异常的方法。A storage medium stores program instructions, characterized in that when the program instructions are run, the method for detecting refrigerant anomalies as described in any one of claims 1 to 8 is executed.
  12. 一种计算机程序，当所述计算机程序被计算机执行时，使所述计算机实现如权利要求1至8任一项所述的用于检测冷媒异常的方法。A computer program, when the computer program is executed by a computer, causes the computer to implement the method for detecting refrigerant anomalies according to any one of claims 1 to 8.
  13. 一种计算机程序产品，所述计算机程序产品包括存储在计算机可读存储介质上的计算机指令，当所述程序指令被计算机执行时，使所述计算机实现如权利要求1至8任一项所述的用于检测冷媒异常的方法。 A computer program product. The computer program product includes computer instructions stored on a computer-readable storage medium. When the program instructions are executed by a computer, the computer implements the method described in any one of claims 1 to 8. Method for detecting refrigerant anomalies.
PCT/CN2023/089859 2022-08-26 2023-04-21 Method and apparatus for detecting refrigerant anomaly, air conditioner, and storage medium WO2024041005A1 (en)

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