WO2018058732A1 - Refrigerant leakage protection and control method, controller, and air conditioner - Google Patents

Refrigerant leakage protection and control method, controller, and air conditioner Download PDF

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Publication number
WO2018058732A1
WO2018058732A1 PCT/CN2016/104163 CN2016104163W WO2018058732A1 WO 2018058732 A1 WO2018058732 A1 WO 2018058732A1 CN 2016104163 W CN2016104163 W CN 2016104163W WO 2018058732 A1 WO2018058732 A1 WO 2018058732A1
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Prior art keywords
maximum frequency
current operating
operating condition
exhaust temperature
air conditioner
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PCT/CN2016/104163
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French (fr)
Chinese (zh)
Inventor
陈华伟
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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 WO2018058732A1 publication Critical patent/WO2018058732A1/en

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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
    • F24F11/89—Arrangement or mounting of control or safety devices
    • 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
    • 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

Definitions

  • the embodiment of the invention relates to the technical field of air conditioners, and particularly relates to a refrigerant leakage protection control method, a controller and an air conditioner.
  • inverter air conditioners have already forecasted the leakage of refrigerants, but they only stay in the forecasting stage, and can only inform users that the air conditioners they are using have a refrigerant leakage failure. Once this fault is reported, basically the refrigerant leaks out. The air conditioner has also been severely damaged.
  • the present invention provides a refrigerant leakage protection control method, a controller, and an air conditioner.
  • the refrigerant leakage protection control method provided by the present invention can provide air conditioning without delaying air conditioning operation when refrigerant leakage occurs. protection.
  • the present invention provides the following technical solutions:
  • the present invention provides a refrigerant leakage protection control method, including:
  • the maximum frequency under the current operating condition is adjusted according to a preset control strategy to reduce the current The maximum frequency under operating conditions.
  • the method further includes:
  • the maximum frequency after the last adjustment is continued according to the The preset control strategy is adjusted.
  • the compressor is controlled to continue to operate according to the most recently adjusted maximum frequency.
  • the preset control strategy includes:
  • FMAX(n-1) is the maximum frequency corresponding to the current operating condition
  • FMAX(n) is the maximum frequency after the first adjustment
  • ⁇ is the exhaust of the first detected compressor.
  • FMAX(n-1) is the adjusted maximum frequency closest to this adjustment
  • FMAX(n) is the adjusted maximum frequency
  • the value of k ranges from 1.5 ⁇ k ⁇ 3.
  • the method further includes:
  • the control compressor is operated according to the preset minimum frequency.
  • the method further includes:
  • the air conditioner is controlled to issue a fault report.
  • the method further includes:
  • the maximum frequency corresponding to the changed working condition and the target exhaust temperature are obtained, and the target exhaust temperature under the condition that the compressor exhaust temperature is greater than the changed condition is detected.
  • the maximum frequency under the changed operating conditions is adjusted according to the preset control strategy.
  • the present invention also provides a controller, including:
  • Obtaining a module configured to acquire a current operating condition of the air conditioner, and obtain a maximum frequency corresponding to the current operating condition and a target exhaust temperature according to the current operating condition;
  • the control module is configured to adjust the maximum frequency of the current operating condition according to a preset control strategy when detecting that the exhaust temperature of the compressor is greater than the target exhaust temperature under the current operating condition, so as to reduce the current operating condition.
  • the maximum frequency below.
  • the invention also provides an air conditioner comprising a controller as described above.
  • the refrigerant leakage protection control method comprehensively judges the refrigerant leakage of the air conditioner system by collecting the exhaust gas temperature, and detecting that the exhaust gas temperature of the compressor is greater than the current operating condition.
  • the target exhaust temperature that is, when there is refrigerant leakage in the air conditioner
  • the maximum frequency under the current operating condition is adjusted according to a preset control strategy to reduce the maximum frequency under the current operating condition, thereby realizing the air conditioner. Protection to improve the life of the air conditioner.
  • the refrigerant leakage protection control method provided by the present invention comprehensively judges the amount of refrigerant leakage of the air conditioner system by collecting the exhaust gas temperature, thereby adjusting the frequency control logic of the air conditioner to achieve the purpose of protecting the normal operation of the air conditioner. That is, the present invention can provide protection to the air conditioner while not causing the air conditioner to work when the refrigerant leaks.
  • FIG. 1 is a flow chart of a refrigerant leakage protection control method according to a first embodiment of the present invention
  • FIG. 2 is a schematic view showing the working principle of an air conditioner refrigeration system
  • FIG. 3 is a flow chart of a refrigerant leakage protection control method according to a third embodiment of the present invention Figure
  • FIG. 4 is a schematic structural diagram of a controller according to a fourth embodiment of the present invention.
  • the present invention provides a refrigerant leakage protection control method, a controller, and an air conditioner.
  • the refrigerant leakage protection control method provided by the present invention can provide air conditioning without delaying air conditioning operation when refrigerant leakage occurs. protection.
  • the present invention will be explained in detail below through the first to fifth embodiments.
  • FIG. 1 is a flowchart of a refrigerant leakage protection control method according to a first embodiment of the present invention.
  • a refrigerant leakage protection control method according to a first embodiment of the present invention includes the following steps:
  • Step 101 Acquire a current operating condition of the air conditioner, and obtain a maximum frequency corresponding to the current operating condition and a target exhaust temperature according to the current operating condition.
  • the air conditioner since the air conditioner has different maximum frequencies corresponding to the target exhaust temperature under different working conditions, it is necessary to obtain the current operating condition of the air conditioner before performing the control, and according to the current operation.
  • the working condition acquires the maximum frequency corresponding to the current operating condition and the target exhaust temperature. For example, assuming that the current operating condition is the first operating condition in Table 1 below, the maximum frequency a1 corresponding to the current operating condition and the target exhaust temperature ⁇ 1 are obtained.
  • Table 1 corresponding maximum frequency and target exhaust temperature under different operating conditions in cooling mode
  • Step 102 If it is detected that the exhaust temperature of the compressor is greater than the target exhaust temperature under the current operating condition and continues for the first preset time period, the maximum frequency under the current operating condition is adjusted according to a preset control strategy. To reduce the maximum frequency under current operating conditions.
  • FIG. 1 denotes a compressor
  • 2 denotes a four-way valve
  • 3 denotes an outdoor unit heat exchanger
  • 4 denotes a throttle capillary
  • 5 denotes an indoor heat exchanger
  • 6 denotes an exhaust temperature sensor.
  • the air conditioner In a normal cooling or heating cycle, the air conditioner has a normal range of exhaust temperatures, and its exhaust temperature is detected by the exhaust temperature sensor 6. However, when the refrigeration system is partially leaked, the exhaust temperature will be higher than the normal exhaust temperature. Therefore, if it is detected that the exhaust temperature of the compressor is greater than the target exhaust temperature under the current operating conditions, it may indicate that the refrigerant leaks in the refrigeration system.
  • the refrigerant leakage occurs in the air conditioner refrigeration system, and the present invention prevents the refrigerant from being cooled.
  • the leakage condition is further deteriorated.
  • the preset control strategy is used to adjust the maximum frequency under the current operating conditions to reduce the maximum frequency under the current operating conditions, thereby realizing the protection of the air conditioner.
  • the value of the first preset time period is generally 3 to 7 minutes.
  • the value of the first preset time period may be 0, that is, when detecting that the exhaust temperature of the compressor is greater than the target exhaust temperature under the current operating condition, the current control strategy is used according to the preset control strategy.
  • the maximum frequency under operating conditions is adjusted to reduce the maximum frequency under current operating conditions.
  • the air conditioner is controlled to operate according to the maximum frequency corresponding to the current working condition.
  • the refrigerant leakage protection control method comprehensively judges the refrigerant leakage of the air conditioner system by collecting the exhaust gas temperature, and detects that the exhaust gas temperature of the compressor is greater than the current operating condition.
  • the target exhaust temperature that is, when there is refrigerant leakage in the air conditioner
  • the maximum frequency under the current operating condition is adjusted according to a preset control strategy to reduce the maximum frequency under the current operating condition, thereby realizing the air conditioner. Protection to improve the life of the air conditioner.
  • the refrigerant leakage protection control method provided by the embodiment of the present invention comprehensively judges the amount of refrigerant leakage of the air conditioner system by collecting the exhaust gas temperature, thereby adjusting the frequency control logic of the air conditioner to achieve normal operation of the air conditioner.
  • the object, that is, the embodiment of the present invention can provide protection to the air conditioner while not causing the air conditioner to work when the refrigerant leaks.
  • the preset control policy includes:
  • FMAX(n-1) is the maximum frequency corresponding to the current operating condition
  • FMAX(n) is the maximum frequency after the first adjustment
  • ⁇ is the exhaust of the first detected compressor.
  • FMAX(n-1) is the adjusted maximum frequency closest to this adjustment
  • FMAX(n) is the adjusted maximum frequency
  • the preset control strategy provided in this embodiment can implement stepwise protection control on the air conditioner.
  • the exhaust gas temperature tp generally refers to the exhaust gas temperature at the end of the first predetermined time period (eg, 5 minutes).
  • the air conditioner detects a certain moment
  • the actual exhaust temperature tp 103 degrees
  • the exhaust temperature tp 108 degrees after 5 minutes.
  • tp generally takes the exhaust temperature after 5 minutes, that is, 108 degrees.
  • the adjustment range is not too large each time. Therefore, preferably, the range of k is 1.5 ⁇ k ⁇ 3.
  • the preset control strategy described in the present invention is not limited thereto, and any control strategy capable of adjusting the maximum frequency of the air conditioner according to the current exhaust temperature of the compressor to achieve protection of the air conditioner should be It falls within the scope of protection of the present invention.
  • H is a fixed value.
  • each time it is adjusted it is a multiple of the last adjustment amount H.
  • the refrigerant leakage protection control method provided by the above embodiment is further supplemented.
  • the method further includes the following steps:
  • Step 103 If the exhaust gas temperature of the current compressor is greater than the target exhaust gas temperature under the current working condition for each of the second preset time periods, and the first preset time period is continued, the latest adjusted maximum frequency is obtained. Continue to adjust according to the preset control strategy.
  • the second preset time period is not excessively long. Therefore, preferably, the second preset time period is 20 to 40 minutes.
  • the maximum frequency of the air conditioner is adjusted once, it is not left unattended, but the adaptability is continuously adjusted according to the specific situation at any time. If after a period of 30 minutes after the first adjustment, it is judged that the exhaust temperature of the current compressor is still greater than the target exhaust temperature under the current working conditions, the refrigerant leakage still exists, and the maximum frequency should be adjusted at this time. In order to improve the leakage of refrigerant, and at the same time achieve automatic protection of air conditioners.
  • the compressor can be controlled to continue according to the latest adjusted maximum frequency. run.
  • the refrigerant leakage protection control method provided by the above embodiment is explained by a specific example.
  • the refrigerant leakage protection control method provided by the above embodiment further includes: if it is determined that the adjusted maximum frequency is less than a preset minimum frequency of the air conditioner, controlling the compressor according to the preset minimum Frequency operation. In addition, if it is determined that the compressor continues to operate continuously for a third predetermined period of time according to the preset minimum frequency, the air conditioner is controlled to issue a fault report.
  • the third predetermined period of time should not be too long, generally 3 to 5 hours.
  • the refrigerant leakage protection control method provided by the above embodiment further includes:
  • the maximum frequency corresponding to the changed working condition and the target exhaust temperature are obtained, and the target exhaust temperature under the condition that the compressor exhaust temperature is greater than the changed condition is detected.
  • the maximum frequency under the changed operating conditions is adjusted according to the preset control strategy.
  • the air conditioner when the air conditioner performs a refrigerant control down frequency, the maximum frequency of the air conditioner at this time
  • the air conditioner when the power is re-powered, the air conditioner is re-run, and it is necessary to re-determine the execution. That is, if the exhaust temperature of the air conditioner is lower than the target maximum exhaust temperature, the air conditioner performs the operation according to the original maximum frequency; if the air conditioner is re-operated, the exhaust temperature of the air conditioner is still higher than the target maximum exhaust temperature. Then, the air conditioner re-executes the refrigerant leakage step control logic according to the preset control strategy described above.
  • a fourth embodiment of the present invention provides a controller.
  • the controller includes: an acquisition module 41 and a control module 42, wherein:
  • the obtaining module 41 is configured to obtain a current operating condition of the air conditioner, and obtain a maximum frequency corresponding to the current operating condition and a target exhaust temperature according to the current operating condition;
  • the control module 42 is configured to adjust the maximum frequency under the current operating condition according to a preset control strategy when detecting that the exhaust gas temperature of the compressor is greater than the target exhaust temperature under the current operating condition, so as to reduce the current operation The maximum frequency.
  • the preset control policy includes:
  • FMAX(n-1) is the maximum frequency corresponding to the current operating condition
  • FMAX(n) is the maximum frequency after the first adjustment
  • ⁇ is the exhaust of the first detected compressor.
  • FMAX(n-1) is the adjusted maximum frequency closest to this adjustment
  • FMAX(n) is the adjusted maximum frequency
  • the exhaust gas temperature tp generally refers to the exhaust gas temperature at the end of the first predetermined time period (eg, 5 minutes).
  • the air conditioner detects a certain moment
  • the actual exhaust temperature tp 103 degrees
  • the exhaust temperature tp 108 degrees after 5 minutes.
  • tp generally takes the exhaust temperature after 5 minutes, that is, 108 degrees.
  • the adjustment range is not too large each time. Therefore, preferably, the range of k is 1.5 ⁇ k ⁇ 3.
  • the preset control strategy described in the present invention is not limited thereto, and any control strategy capable of adjusting the maximum frequency of the air conditioner according to the current exhaust temperature of the compressor to achieve protection of the air conditioner should be It falls within the scope of protection of the present invention.
  • H is a fixed value.
  • each time it is adjusted it is a multiple of the last adjustment amount H.
  • control module 42 is further configured to: for each second predetermined period of time, if it is determined that the current exhaust temperature of the compressor is greater than the target exhaust temperature under the current operating condition and continue for the first pre- If the time period is set, the maximum adjusted frequency is continuously adjusted according to the preset control strategy.
  • the second preset time period is not excessively long. Therefore, preferably, the second preset time period is 20 to 40 minutes.
  • the embodiment of the present invention does not leave a problem, but is continuously adjusted according to specific conditions at any time. If after a period of 30 minutes after the first adjustment, it is judged that the exhaust temperature of the current compressor is still greater than the target exhaust temperature under the current working conditions, the refrigerant leakage still exists, and the maximum frequency should be adjusted at this time. In order to improve the leakage of refrigerant, and at the same time achieve automatic protection of air conditioners.
  • the compressor can be controlled to continue according to the latest adjusted maximum frequency. run.
  • control module 42 is further configured to:
  • the control compressor is operated according to the preset minimum frequency.
  • control module 42 is further configured to:
  • the air conditioner is controlled to issue a fault report.
  • the third predetermined period of time should not be too long, generally 3 to 5 hours.
  • control module 42 is further configured to:
  • the acquisition module 41 is controlled to acquire the maximum frequency corresponding to the changed working condition and the target exhaust temperature, and detects that the exhaust temperature of the compressor is greater than the changed operating condition.
  • the maximum frequency under the changed operating conditions is adjusted according to a preset control strategy.
  • the controller described in this embodiment may be used to perform the control method described in the foregoing embodiments, and the principles and technical effects thereof are similar, and thus are not described herein again.
  • a fifth embodiment of the present invention provides an air conditioner including the controller as described in the above embodiments. Since the air conditioner includes the above-described controller, the same technical problem can be solved and the same technical effects can be obtained.
  • the terms “mounted,” “connected,” and “connected” are used in a broad sense, and may be, for example, a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection, It can also be an electrical connection; it can be directly connected, or it can be connected indirectly through an intermediate medium, which can be the internal connection of two components.
  • the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.
  • the refrigerant leakage protection control method comprehensively judges the refrigerant leakage of the air conditioner system by collecting the exhaust gas temperature, and when detecting that the exhaust gas temperature of the compressor is greater than the target exhaust temperature under the current operating condition , that is, when there is refrigerant leakage in the air conditioner, the maximum frequency under the current operating conditions is adjusted according to a preset control strategy to reduce the maximum frequency under the current operating conditions, thereby realizing the protection of the air conditioner to improve the air conditioner.
  • the service life
  • the refrigerant leakage protection control method provided by the present invention comprehensively judges the amount of refrigerant leakage of the air conditioner system by collecting the exhaust gas temperature, thereby adjusting the frequency control logic of the air conditioner to achieve the purpose of protecting the normal operation of the air conditioner. That is, the present invention can provide protection to the air conditioner while not causing the air conditioner to work in the event of refrigerant leakage, and has industrial applicability.

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  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
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Abstract

A refrigerant leakage protection and control method, comprising: acquiring a current operating condition of an air conditioner and acquiring, on the basis of the current operating condition, the maximum frequency and a target exhaust gas temperature corresponding to the current operating condition (101); if the exhaust gas temperature of a compressor is detected to be greater than the target gas exhaust temperature under the current operating condition and has continued as such for a first preset duration, then adjusting the maximum frequency under the current operating condition according to a preset control policy, thus reducing the maximum frequency under the current operating condition (102). Also disclosed are a controller and the air conditioner for use in the refrigerant leakage protection and control method.

Description

冷媒泄露保护控制方法、控制器及空调Refrigerant leakage protection control method, controller and air conditioner
交叉引用cross reference
本申请要求2016年09月29日提交的专利名称为“冷媒泄露保护控制方法、控制器及空调”的第2016108653861号中国专利申请的优先权，其所公开的内容作为参考全文并入本申请。The present application claims the benefit of priority to the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the disclosure.
技术领域Technical field
本发明实施例涉及空调技术领域，具体涉及一种冷媒泄露保护控制方法、控制器及空调。The embodiment of the invention relates to the technical field of air conditioners, and particularly relates to a refrigerant leakage protection control method, a controller and an air conditioner.
背景技术Background technique
目前很多变频空调器已经有了对冷媒泄露问题的预报，但是仅仅停留在预报阶段，只能告知用户正在使用的空调器出现了冷媒泄露故障，而一旦报出此故障，基本上冷媒泄露殆尽，空调器也已受到了严重的损坏。At present, many inverter air conditioners have already forecasted the leakage of refrigerants, but they only stay in the forecasting stage, and can only inform users that the air conditioners they are using have a refrigerant leakage failure. Once this fault is reported, basically the refrigerant leaks out. The air conditioner has also been severely damaged.
发明内容Summary of the invention
针对现有技术中的问题，本发明提供一种冷媒泄露保护控制方法、控制器及空调，本发明提供的冷媒泄露保护控制方法，能够在发生冷媒泄露时在不耽误空调工作的同时对空调提供保护。The present invention provides a refrigerant leakage protection control method, a controller, and an air conditioner. The refrigerant leakage protection control method provided by the present invention can provide air conditioning without delaying air conditioning operation when refrigerant leakage occurs. protection.
为解决上述技术问题，本发明提供以下技术方案：In order to solve the above technical problems, the present invention provides the following technical solutions:
第一方面，本发明提供了一种冷媒泄露保护控制方法，包括：In a first aspect, the present invention provides a refrigerant leakage protection control method, including:
获取空调器的当前运行工况，并根据当前运行工况获取与当前运行工况对应的最大频率以及目标排气温度；Obtaining the current operating condition of the air conditioner, and obtaining a maximum frequency corresponding to the current operating condition and a target exhaust temperature according to the current operating condition;
若检测获知压缩机的排气温度大于当前运行工况下的目标排气温度并持续第一预设时间段，则按照预设控制策略对当前运行工况下的最大频率进行调整，以降低当前运行工况下的最大频率。If the detection knows that the exhaust temperature of the compressor is greater than the target exhaust temperature under the current operating condition and continues for the first preset time period, the maximum frequency under the current operating condition is adjusted according to a preset control strategy to reduce the current The maximum frequency under operating conditions.
进一步地，在对当前运行工况下的最大频率进行调整后，所述方法还包括： Further, after adjusting the maximum frequency in the current operating condition, the method further includes:
每间隔第二预设时间段，若判断获知当前压缩机的排气温度大于当前工况下的目标排气温度并持续第一预设时间段，则对最近一次调整后的最大频率继续按照所述预设控制策略进行调整。For every second preset period of time, if it is determined that the exhaust temperature of the current compressor is greater than the target exhaust temperature under the current working condition and continues for the first preset time period, the maximum frequency after the last adjustment is continued according to the The preset control strategy is adjusted.
进一步地，若判断获知当前压缩机的排气温度小于或等于当前工况下的目标排气温度，则控制压缩机按照最近一次调整后的最大频率继续运行。Further, if it is determined that the exhaust temperature of the current compressor is less than or equal to the target exhaust temperature under the current operating condition, the compressor is controlled to continue to operate according to the most recently adjusted maximum frequency.
进一步地，所述预设控制策略包括：Further, the preset control strategy includes:
FMAX(n)＝FMAX(n-1)-k*θ；FMAX(n)=FMAX(n-1)-k*θ;
其中，n≥1，当n＝1时，FMAX(n-1)为当前运行工况对应的最大频率，FMAX(n)为首次调整后最大频率，θ为首次检测到的压缩机的排气温度tp与当前工况下的目标排气温度TP的差值，即θ＝tp-TP，k≥1；Where n≥1, when n=1, FMAX(n-1) is the maximum frequency corresponding to the current operating condition, FMAX(n) is the maximum frequency after the first adjustment, and θ is the exhaust of the first detected compressor. The difference between the temperature tp and the target exhaust temperature TP under the current working condition, that is, θ=tp-TP, k≥1;
当n＞1时，FMAX(n-1)为与本次调整最邻近的一次调整后的最大频率，FMAX(n)为本次调整后的最大频率；θ为本次检测到的压缩机的排气温度tp与当前工况下的目标排气温度TP的差值，即θ＝tp-TP，k≥1。When n>1, FMAX(n-1) is the adjusted maximum frequency closest to this adjustment, FMAX(n) is the adjusted maximum frequency; θ is the detected compressor The difference between the exhaust gas temperature tp and the target exhaust gas temperature TP under the current operating conditions, that is, θ=tp-TP, k≥1.
进一步地，所述k的取值范围为1.5≤k≤3。Further, the value of k ranges from 1.5 ≤ k ≤ 3.
进一步地，所述方法还包括：Further, the method further includes:
若判断获知调整后的最大频率小于空调器预先设定的最小频率，则控制压缩机按照所述预先设定的最小频率运行。If it is determined that the adjusted maximum frequency is less than a preset minimum frequency of the air conditioner, the control compressor is operated according to the preset minimum frequency.
进一步地，所述方法还包括：Further, the method further includes:
若判断获知压缩机按照所述预先设定的最小频率连续持续运行超过第三预设时间段，则控制空调器发出故障报告。If it is determined that the compressor continues to operate continuously for a third predetermined period of time according to the preset minimum frequency, the air conditioner is controlled to issue a fault report.
进一步地，所述方法还包括：Further, the method further includes:
若判断获知当前运行工况发生变化，则获取与变化后的工况对应的最大频率以及目标排气温度，并在检测到压缩机的排气温度大于变化后的工况下的目标排气温度时，按照预设控制策略对变化后的工况下的最大频率进行调整。 If it is determined that the current operating condition changes, the maximum frequency corresponding to the changed working condition and the target exhaust temperature are obtained, and the target exhaust temperature under the condition that the compressor exhaust temperature is greater than the changed condition is detected. At the time, the maximum frequency under the changed operating conditions is adjusted according to the preset control strategy.
第二方面，本发明还提供了一种控制器，包括：In a second aspect, the present invention also provides a controller, including:
获取模块，用于获取空调器的当前运行工况，并根据当前运行工况获取与当前运行工况对应的最大频率以及目标排气温度；Obtaining a module, configured to acquire a current operating condition of the air conditioner, and obtain a maximum frequency corresponding to the current operating condition and a target exhaust temperature according to the current operating condition;
控制模块，用于在检测获知压缩机的排气温度大于当前运行工况下的目标排气温度时，按照预设控制策略对当前运行工况下的最大频率进行调整，以降低当前运行工况下的最大频率。The control module is configured to adjust the maximum frequency of the current operating condition according to a preset control strategy when detecting that the exhaust temperature of the compressor is greater than the target exhaust temperature under the current operating condition, so as to reduce the current operating condition. The maximum frequency below.
第三方面，本发明还提供了一种空调，包括如上面所述的控制器。In a third aspect, the invention also provides an air conditioner comprising a controller as described above.
由上述技术方案可知，本发明所述的冷媒泄露保护控制方法，通过对排气温度采集，来对空调器***冷媒泄漏进行综合判断，在检测获知压缩机的排气温度大于当前运行工况下的目标排气温度时，也即空调器存在冷媒泄漏时，按照预设控制策略对当前运行工况下的最大频率进行调整，以降低当前运行工况下的最大频率，从而实现对空调器的保护，以提高空调器的使用寿命。可见，本发明提供的冷媒泄露保护控制方法，通过对排气温度采集，来对空调器***冷媒泄漏量进行综合判断，从而调整空调器的频率控制逻辑，以达到保护空调器正常运行的目的，即本发明能够在发生冷媒泄露时在不耽误空调工作的同时对空调提供保护。According to the above technical solution, the refrigerant leakage protection control method according to the present invention comprehensively judges the refrigerant leakage of the air conditioner system by collecting the exhaust gas temperature, and detecting that the exhaust gas temperature of the compressor is greater than the current operating condition. When the target exhaust temperature is reached, that is, when there is refrigerant leakage in the air conditioner, the maximum frequency under the current operating condition is adjusted according to a preset control strategy to reduce the maximum frequency under the current operating condition, thereby realizing the air conditioner. Protection to improve the life of the air conditioner. It can be seen that the refrigerant leakage protection control method provided by the present invention comprehensively judges the amount of refrigerant leakage of the air conditioner system by collecting the exhaust gas temperature, thereby adjusting the frequency control logic of the air conditioner to achieve the purpose of protecting the normal operation of the air conditioner. That is, the present invention can provide protection to the air conditioner while not causing the air conditioner to work when the refrigerant leaks.
附图说明DRAWINGS
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are Some embodiments of the present invention may also be used to obtain other drawings based on these drawings without departing from the art.
图1是本发明第一个实施例提供的冷媒泄露保护控制方法的流程图；1 is a flow chart of a refrigerant leakage protection control method according to a first embodiment of the present invention;
图2是空调器制冷***的工作原理示意图；2 is a schematic view showing the working principle of an air conditioner refrigeration system;
图3是本发明第三个实施例提供的冷媒泄露保护控制方法的流程 图；3 is a flow chart of a refrigerant leakage protection control method according to a third embodiment of the present invention Figure
图4是本发明第四个实施例提供的控制器的结构示意图。4 is a schematic structural diagram of a controller according to a fourth embodiment of the present invention.
具体实施方式detailed description
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整的描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
针对现有技术中的问题，本发明提供一种冷媒泄露保护控制方法、控制器及空调，本发明提供的冷媒泄露保护控制方法，能够在发生冷媒泄露时在不耽误空调工作的同时对空调提供保护。下面将通过第一至第五实施例对本发明进行详细解释说明。The present invention provides a refrigerant leakage protection control method, a controller, and an air conditioner. The refrigerant leakage protection control method provided by the present invention can provide air conditioning without delaying air conditioning operation when refrigerant leakage occurs. protection. The present invention will be explained in detail below through the first to fifth embodiments.
图1示出了本发明第一个实施例提供的冷媒泄露保护控制方法的流程图，参见图1，本发明第一个实施例提供的冷媒泄露保护控制方法包括如下步骤：FIG. 1 is a flowchart of a refrigerant leakage protection control method according to a first embodiment of the present invention. Referring to FIG. 1, a refrigerant leakage protection control method according to a first embodiment of the present invention includes the following steps:
步骤101：获取空调器的当前运行工况，并根据当前运行工况获取与当前运行工况对应的最大频率以及目标排气温度。Step 101: Acquire a current operating condition of the air conditioner, and obtain a maximum frequency corresponding to the current operating condition and a target exhaust temperature according to the current operating condition.
在本步骤中，参见下表，由于空调器在不同的工况下对应有不同的最大频率以目标排气温度，因此在进行控制之前，需要获取空调器的当前运行工况，并根据当前运行工况获取与当前运行工况对应的最大频率以及目标排气温度。例如，假设当前的工况为下表1中的第一工况，则获取与当前运行工况对应的最大频率a1以及目标排气温度ε1。In this step, referring to the following table, since the air conditioner has different maximum frequencies corresponding to the target exhaust temperature under different working conditions, it is necessary to obtain the current operating condition of the air conditioner before performing the control, and according to the current operation. The working condition acquires the maximum frequency corresponding to the current operating condition and the target exhaust temperature. For example, assuming that the current operating condition is the first operating condition in Table 1 below, the maximum frequency a1 corresponding to the current operating condition and the target exhaust temperature ε1 are obtained.
例如，第一工况下，室外环境温度为：35≤t≤40时，正常情况下(无冷媒泄漏时)，最大频率FMAX＝95HZ；目标排气温度TP＝102℃；第二工况下，室外环境温度为：30≤t＜35时，正常情况下(无冷媒泄漏时)，最大频率FMAX＝90HZ；目标排气温度TP＝97℃。 For example, under the first working condition, when the outdoor ambient temperature is: 35≤t≤40, under normal conditions (when there is no refrigerant leakage), the maximum frequency is FMAX=95HZ; the target exhaust temperature is TP=102°C; under the second condition When the outdoor ambient temperature is 30 ≤ t < 35, under normal conditions (when there is no refrigerant leakage), the maximum frequency is FMAX=90HZ; the target exhaust temperature is TP=97°C.
表1制冷模式下不同工况下对应的最大频率和目标排气温度Table 1 corresponding maximum frequency and target exhaust temperature under different operating conditions in cooling mode
工况Working condition 最大频率Maximum frequency 目标排气温度Target exhaust temperature
t1-t2(第一工况)T1-t2 (first operating condition) a1A1 ε1Ε1
t2-t3(第二工况)T2-t3 (second working condition) a2A2 ε2Ε2
…... …... …...
步骤102：若检测获知压缩机的排气温度大于当前运行工况下的目标排气温度并持续第一预设时间段，则按照预设控制策略对当前运行工况下的最大频率进行调整，以降低当前运行工况下的最大频率。Step 102: If it is detected that the exhaust temperature of the compressor is greater than the target exhaust temperature under the current operating condition and continues for the first preset time period, the maximum frequency under the current operating condition is adjusted according to a preset control strategy. To reduce the maximum frequency under current operating conditions.
在本步骤中，参见图2所示的制冷***原理图。其中，1表示压缩机，2表示四通阀，3表示室外机换热器，4表示节流毛细管，5表示室内换热器，6表示排气温度传感器。在正常的制冷或制热循环下，空调器都有正常范围的排气温度，其排气温度是通过排气温度传感器6检测的。但当制冷***出现部分泄露时，排气温度会比正常的排气温度偏高。因此若检测到压缩机的排气温度大于当前运行工况下的目标排气温度，则可以说明制冷***出现了冷媒泄露。In this step, see the schematic diagram of the refrigeration system shown in Figure 2. 1 denotes a compressor, 2 denotes a four-way valve, 3 denotes an outdoor unit heat exchanger, 4 denotes a throttle capillary, 5 denotes an indoor heat exchanger, and 6 denotes an exhaust temperature sensor. In a normal cooling or heating cycle, the air conditioner has a normal range of exhaust temperatures, and its exhaust temperature is detected by the exhaust temperature sensor 6. However, when the refrigeration system is partially leaked, the exhaust temperature will be higher than the normal exhaust temperature. Therefore, if it is detected that the exhaust temperature of the compressor is greater than the target exhaust temperature under the current operating conditions, it may indicate that the refrigerant leaks in the refrigeration system.
在本步骤中，当检测获知压缩机的排气温度大于当前运行工况下的目标排气温度并持续第一预设时间段时，说明空调器制冷***出现了冷媒泄露，本发明为了防止冷媒泄露状况进一步恶化，采用预设控制策略对当前运行工况下的最大频率进行调整，以降低当前运行工况下的最大频率，从而实现对空调器的保护。在本步骤中，第一预设时间段的取值一般为3～7min。当然特殊情况下，第一预设时间段的取值可以为0，也即在检测获知压缩机的排气温度大于当前运行工况下的目标排气温度时，就按照预设控制策略对当前运行工况下的最大频率进行调整，以降低当前运行工况下的最大频率。In this step, when it is detected that the exhaust gas temperature of the compressor is greater than the target exhaust gas temperature under the current operating condition and continues for the first predetermined time period, the refrigerant leakage occurs in the air conditioner refrigeration system, and the present invention prevents the refrigerant from being cooled. The leakage condition is further deteriorated. The preset control strategy is used to adjust the maximum frequency under the current operating conditions to reduce the maximum frequency under the current operating conditions, thereby realizing the protection of the air conditioner. In this step, the value of the first preset time period is generally 3 to 7 minutes. Of course, in a special case, the value of the first preset time period may be 0, that is, when detecting that the exhaust temperature of the compressor is greater than the target exhaust temperature under the current operating condition, the current control strategy is used according to the preset control strategy. The maximum frequency under operating conditions is adjusted to reduce the maximum frequency under current operating conditions.
需要说明的是，若检测获知压缩机的排气温度系小于或等于当前运行工况下的目标排气温度，则控制空调器按照与当前工况对应的最大频率运行。 It should be noted that, if it is detected that the exhaust gas temperature of the compressor is less than or equal to the target exhaust gas temperature under the current operating condition, the air conditioner is controlled to operate according to the maximum frequency corresponding to the current working condition.
从上面描述可知，本发明实施例提供的冷媒泄露保护控制方法，通过对排气温度采集，来对空调器***冷媒泄漏进行综合判断，在检测获知压缩机的排气温度大于当前运行工况下的目标排气温度时，也即空调器存在冷媒泄漏时，按照预设控制策略对当前运行工况下的最大频率进行调整，以降低当前运行工况下的最大频率，从而实现对空调器的保护，以提高空调器的使用寿命。可见，本发明实施例提供的冷媒泄露保护控制方法，通过对排气温度采集，来对空调器***冷媒泄漏量进行综合判断，从而调整空调器的频率控制逻辑，以达到保护空调器正常运行的目的，即本发明实施例能够在发生冷媒泄露时在不耽误空调工作的同时对空调提供保护。It can be seen from the above description that the refrigerant leakage protection control method provided by the embodiment of the present invention comprehensively judges the refrigerant leakage of the air conditioner system by collecting the exhaust gas temperature, and detects that the exhaust gas temperature of the compressor is greater than the current operating condition. When the target exhaust temperature is reached, that is, when there is refrigerant leakage in the air conditioner, the maximum frequency under the current operating condition is adjusted according to a preset control strategy to reduce the maximum frequency under the current operating condition, thereby realizing the air conditioner. Protection to improve the life of the air conditioner. It can be seen that the refrigerant leakage protection control method provided by the embodiment of the present invention comprehensively judges the amount of refrigerant leakage of the air conditioner system by collecting the exhaust gas temperature, thereby adjusting the frequency control logic of the air conditioner to achieve normal operation of the air conditioner. The object, that is, the embodiment of the present invention can provide protection to the air conditioner while not causing the air conditioner to work when the refrigerant leaks.
在本发明第二个实施例中，给出了上述实施例中所述的预设控制策略的一种具体实现方式。In the second embodiment of the present invention, a specific implementation manner of the preset control strategy described in the foregoing embodiment is given.
在本实施例中，所述预设控制策略包括：In this embodiment, the preset control policy includes:
FMAX(n)＝FMAX(n-1)-k*θ；FMAX(n)=FMAX(n-1)-k*θ;
其中，n≥1，当n＝1时，FMAX(n-1)为当前运行工况对应的最大频率，FMAX(n)为首次调整后最大频率，θ为首次检测到的压缩机的排气温度tp与当前工况下的目标排气温度TP的差值，即θ＝tp-TP，k≥1；Where n≥1, when n=1, FMAX(n-1) is the maximum frequency corresponding to the current operating condition, FMAX(n) is the maximum frequency after the first adjustment, and θ is the exhaust of the first detected compressor. The difference between the temperature tp and the target exhaust temperature TP under the current working condition, that is, θ=tp-TP, k≥1;
当n＞1时，FMAX(n-1)为与本次调整最邻近的一次调整后的最大频率，FMAX(n)为本次调整后的最大频率；θ为本次检测到的压缩机的排气温度tp与当前工况下的目标排气温度TP的差值，即θ＝tp-TP，k≥1。When n>1, FMAX(n-1) is the adjusted maximum frequency closest to this adjustment, FMAX(n) is the adjusted maximum frequency; θ is the detected compressor The difference between the exhaust gas temperature tp and the target exhaust gas temperature TP under the current operating conditions, that is, θ=tp-TP, k≥1.
可见，本实施例提供的预设控制策略可以实现对空调器的阶梯式保护控制。It can be seen that the preset control strategy provided in this embodiment can implement stepwise protection control on the air conditioner.
这里，排气温度tp一般指第一预设时间段(如5分钟)结束时的排气温度。例如，在某种工况下，目标排气温度TP＝102度，空调器检测到某一时刻，实际排气温度tp＝103度，5分钟后排气温度tp＝108度。那么上述公式中，tp一般取5分钟后排气温度，即108度。 Here, the exhaust gas temperature tp generally refers to the exhaust gas temperature at the end of the first predetermined time period (eg, 5 minutes). For example, under certain operating conditions, the target exhaust temperature is TP=102 degrees, the air conditioner detects a certain moment, the actual exhaust temperature tp=103 degrees, and the exhaust temperature tp=108 degrees after 5 minutes. Then, in the above formula, tp generally takes the exhaust temperature after 5 minutes, that is, 108 degrees.
优选地，为了保证用户的使用体验，在对最大频率进行调整时，每次调整幅度不易过大，因此，优选地，所述k的取值范围为1.5≤k≤3。Preferably, in order to ensure the user's experience, when the maximum frequency is adjusted, the adjustment range is not too large each time. Therefore, preferably, the range of k is 1.5≤k≤3.
可以理解的是，本发明所述的预设控制策略并不限于此，凡是能够根据压缩机当前排气温度情况对空调器的最大频率进行调整，以实现对空调器进行保护的控制策略均应落入本发明的保护范围内。例如，每次进行最大功率调整时，均调整一个固定值，如FMAX(n)＝FMAX(n-1)-H，H为固定数值。又或者每次调整时，都是上次调整量H的倍数等。It can be understood that the preset control strategy described in the present invention is not limited thereto, and any control strategy capable of adjusting the maximum frequency of the air conditioner according to the current exhaust temperature of the compressor to achieve protection of the air conditioner should be It falls within the scope of protection of the present invention. For example, each time the maximum power adjustment is made, a fixed value is adjusted, such as FMAX(n)=FMAX(n-1)-H, and H is a fixed value. Or, each time it is adjusted, it is a multiple of the last adjustment amount H.
在本发明第三个实施例中，对上述实施例提供的冷媒泄露保护控制方法进行了进一步的补充。In the third embodiment of the present invention, the refrigerant leakage protection control method provided by the above embodiment is further supplemented.
在本实施例中，在对当前运行工况下的最大频率进行调整后，参见图3，所述方法还包括如下步骤：In this embodiment, after adjusting the maximum frequency in the current operating condition, referring to FIG. 3, the method further includes the following steps:
步骤103：每间隔第二预设时间段，若判断获知当前压缩机的排气温度大于当前工况下的目标排气温度并持续第一预设时间段，则对最近一次调整后的最大频率继续按照所述预设控制策略进行调整。Step 103: If the exhaust gas temperature of the current compressor is greater than the target exhaust gas temperature under the current working condition for each of the second preset time periods, and the first preset time period is continued, the latest adjusted maximum frequency is obtained. Continue to adjust according to the preset control strategy.
在本实施例中，为了准确实施对空调器的保护，所述第二预设时间段不宜过长，因此，优选地，所述第二预设时间段为20～40min。In this embodiment, in order to accurately implement the protection of the air conditioner, the second preset time period is not excessively long. Therefore, preferably, the second preset time period is 20 to 40 minutes.
可见，在本实施例中，在对空调器的最大频率进行一次调整后，并没有置之不管，而是随时根据具体情况进行不断的适应性调整。若在首次调整后的一段时间如30min后，判断获知当前压缩机的排气温度依然大于当前工况下的目标排气温度，则说明冷媒泄露情况依然存在，此时应继续对最大频率进行调整，以改善冷媒泄露状况，同时实现对空调的自动保护。当然若判断获知当前压缩机的排气温度小于或等于当前工况下的目标排气温度，则说明冷媒泄露状况已得到缓解或停止，此时可以控制压缩机按照最近一次调整后的最大频率继续运行。It can be seen that in the present embodiment, after the maximum frequency of the air conditioner is adjusted once, it is not left unattended, but the adaptability is continuously adjusted according to the specific situation at any time. If after a period of 30 minutes after the first adjustment, it is judged that the exhaust temperature of the current compressor is still greater than the target exhaust temperature under the current working conditions, the refrigerant leakage still exists, and the maximum frequency should be adjusted at this time. In order to improve the leakage of refrigerant, and at the same time achieve automatic protection of air conditioners. Of course, if it is judged that the exhaust temperature of the current compressor is less than or equal to the target exhaust temperature under the current working condition, the refrigerant leakage condition has been alleviated or stopped, and the compressor can be controlled to continue according to the latest adjusted maximum frequency. run.
下面通过一个具体实例对上述实施例提供的冷媒泄露保护控制方法进行解释说明。The refrigerant leakage protection control method provided by the above embodiment is explained by a specific example.
例如，在正常情况下(无冷媒泄露)：当室外环境温度t＝37度时(假 设为第一工况)，最大功率FMAX＝95HZ，目标排气温度TP＝102度。For example, under normal conditions (no refrigerant leakage): when the outdoor ambient temperature is t=37 degrees (false Set to the first operating condition), the maximum power FMAX = 95HZ, the target exhaust temperature TP = 102 degrees.
当在此室外环境温度下，空调器检测到某一时刻，实际排气温度tp＝103度，5分钟后排气温度tp＝108度。则对于上述预设控制策略(假设k＝2)来说，θ＝tp-TP＝108-102＝6度，此时空调器最大频率FMAX(n)＝FMAX(n-1)-k*θ＝95-2*6＝83HZ。At this outdoor ambient temperature, the air conditioner detects a certain moment, the actual exhaust temperature tp = 103 degrees, and the exhaust temperature tp = 108 degrees after 5 minutes. For the above preset control strategy (assuming k=2), θ=tp-TP=108-102=6 degrees, at this time, the maximum frequency of the air conditioner FMAX(n)=FMAX(n-1)-k*θ =95-2*6=83HZ.
当空调器运行30分钟后第二次开始检测，30分钟后如果排气温度仍旧高于此室外环境温度下的目标排气温度，比如103度，检测有效5分钟后，排气温度为105度，则：此时θ＝tp-TP＝105-102＝3度，此时空调器最大频率FMAX(n)＝FMAX(n-1)-k*θ＝＝83-2*3＝77hHZ。若30分钟甚至后面更长时间段，所检测到的空调器排气温度，都小于目标排气温度时，则空调器此温度下此工况的最大频率维持在83HZ不变。When the air conditioner is running for 30 minutes, the second detection starts. If the exhaust temperature is still higher than the target exhaust temperature at this outdoor ambient temperature after 30 minutes, such as 103 degrees, the exhaust temperature is 105 degrees after the detection is valid for 5 minutes. Then: θ=tp-TP=105-102=3 degrees at this time, at this time, the maximum frequency of the air conditioner FMAX(n)=FMAX(n-1)-k*θ==83-2*3=77hHZ. If the detected air conditioner exhaust temperature is less than the target exhaust temperature for 30 minutes or even a longer period of time, the maximum frequency of this condition at the temperature of the air conditioner is maintained at 83HZ.
在一种实施方式中，上述实施例提供的冷媒泄露保护控制方法还包括：若判断获知调整后的最大频率小于空调器预先设定的最小频率，则控制压缩机按照所述预先设定的最小频率运行。此外，若判断获知压缩机按照所述预先设定的最小频率连续持续运行超过第三预设时间段，则控制空调器发出故障报告。这里，为了保证空调器免受损坏，所述第三预设时间段不宜过长，一般为3～5小时。In one embodiment, the refrigerant leakage protection control method provided by the above embodiment further includes: if it is determined that the adjusted maximum frequency is less than a preset minimum frequency of the air conditioner, controlling the compressor according to the preset minimum Frequency operation. In addition, if it is determined that the compressor continues to operate continuously for a third predetermined period of time according to the preset minimum frequency, the air conditioner is controlled to issue a fault report. Here, in order to protect the air conditioner from damage, the third predetermined period of time should not be too long, generally 3 to 5 hours.
例如，假设空调器的最小频率fmin＝30HZ；若经过多次调整，计算出来的当前FMAX(n)＝27HZ时，则控制空调器按照30HZ运行，当运行此频率超过4小时后，报“EC”故障。For example, suppose the minimum frequency of the air conditioner is fmin=30HZ; if the current FMAX(n)=27HZ is calculated after multiple adjustments, the air conditioner is controlled to operate at 30Hz, and when the frequency is more than 4 hours, it is reported as “EC”. "malfunction.
在一种实施方式中，上述实施例提供的冷媒泄露保护控制方法还包括：In one embodiment, the refrigerant leakage protection control method provided by the above embodiment further includes:
若判断获知当前运行工况发生变化，则获取与变化后的工况对应的最大频率以及目标排气温度，并在检测到压缩机的排气温度大于变化后的工况下的目标排气温度时，按照预设控制策略对变化后的工况下的最大频率进行调整。If it is determined that the current operating condition changes, the maximum frequency corresponding to the changed working condition and the target exhaust temperature are obtained, and the target exhaust temperature under the condition that the compressor exhaust temperature is greater than the changed condition is detected. At the time, the maximum frequency under the changed operating conditions is adjusted according to the preset control strategy.
例如，当空调器在执行一次冷媒控制降频后，此时空调器最大频 率FMAX(n)＝FMAX(n-1)-k*θ＝95-2*6＝83HZ。若在下次检测之前，室外环境温度由37度，下降到33度，则空调器需要按照33度工况，重新检测判断，调整最大频率限制。For example, when the air conditioner performs a refrigerant control down frequency, the maximum frequency of the air conditioner at this time The rate FMAX(n)=FMAX(n-1)-k*θ=95-2*6=83HZ. If the outdoor ambient temperature drops from 37 degrees to 33 degrees before the next test, the air conditioner needs to re-detect and judge the maximum frequency limit according to the 33 degree working condition.
在室外环境温度t＝33(第二工况)下，最大功率FMAX＝90HZ，目标排气温度TP＝97度。假设此时空调器实际排气温度＝103度，5分钟后排气温度＝105度，θ＝tp-TP＝105-97＝8度，此时空调器最大频率FMAX(n)＝FMAX(n-1)-k*θ＝90-2*8＝74HZ，该步骤假设k＝2。Under the outdoor ambient temperature t=33 (second operating condition), the maximum power FMAX=90HZ and the target exhaust temperature TP=97 degrees. Assume that the actual exhaust temperature of the air conditioner is 103 degrees at this time, the exhaust temperature is 105 degrees after 5 minutes, and θ=tp-TP=105-97=8 degrees. At this time, the maximum frequency of the air conditioner FMAX(n)=FMAX(n) -1) -k*θ=90-2*8=74HZ, this step assumes k=2.
另外，需要说明的是，当重新上电后，空调器重新运行，此时需重新判定执行。即如果此时空调器的排气温度低于目标最大排气温度，则空调器按照原始最大频率执行运行；如果空调器重新运行后，空调器的排气温度还是高于目标最大排气温度，则空调器重新按照上述的预设控制策略执行冷媒泄漏阶梯式控制逻辑。In addition, it should be noted that when the power is re-powered, the air conditioner is re-run, and it is necessary to re-determine the execution. That is, if the exhaust temperature of the air conditioner is lower than the target maximum exhaust temperature, the air conditioner performs the operation according to the original maximum frequency; if the air conditioner is re-operated, the exhaust temperature of the air conditioner is still higher than the target maximum exhaust temperature. Then, the air conditioner re-executes the refrigerant leakage step control logic according to the preset control strategy described above.
基于同样的发明构思，本发明第四个实施例提供了一种控制器，参见图4，该控制器包括：获取模块41和控制模块42，其中：Based on the same inventive concept, a fourth embodiment of the present invention provides a controller. Referring to FIG. 4, the controller includes: an acquisition module 41 and a control module 42, wherein:
获取模块41，用于获取空调器的当前运行工况，并根据当前运行工况获取与当前运行工况对应的最大频率以及目标排气温度；The obtaining module 41 is configured to obtain a current operating condition of the air conditioner, and obtain a maximum frequency corresponding to the current operating condition and a target exhaust temperature according to the current operating condition;
控制模块42，用于在检测获知压缩机的排气温度大于当前运行工况下的目标排气温度时，按照预设控制策略对当前运行工况下的最大频率进行调整，以降低当前运行工况下的最大频率。The control module 42 is configured to adjust the maximum frequency under the current operating condition according to a preset control strategy when detecting that the exhaust gas temperature of the compressor is greater than the target exhaust temperature under the current operating condition, so as to reduce the current operation The maximum frequency.
在一种实施方式中，所述预设控制策略包括：In an embodiment, the preset control policy includes:
FMAX(n)＝FMAX(n-1)-k*θ；FMAX(n)=FMAX(n-1)-k*θ;
其中，n≥1，当n＝1时，FMAX(n-1)为当前运行工况对应的最大频率，FMAX(n)为首次调整后最大频率，θ为首次检测到的压缩机的排气温度tp与当前工况下的目标排气温度TP的差值，即θ＝tp-TP，k≥1；Where n≥1, when n=1, FMAX(n-1) is the maximum frequency corresponding to the current operating condition, FMAX(n) is the maximum frequency after the first adjustment, and θ is the exhaust of the first detected compressor. The difference between the temperature tp and the target exhaust temperature TP under the current working condition, that is, θ=tp-TP, k≥1;
当n＞1时，FMAX(n-1)为与本次调整最邻近的一次调整后的最大频率，FMAX(n)为本次调整后的最大频率；θ为本次检测到的压缩机的排气温度tp与当前工况下的目标排气温度TP的差值，即 θ＝tp-TP，k≥1。When n>1, FMAX(n-1) is the adjusted maximum frequency closest to this adjustment, FMAX(n) is the adjusted maximum frequency; θ is the detected compressor The difference between the exhaust gas temperature tp and the target exhaust gas temperature TP under the current operating conditions, ie θ=tp-TP, k≥1.
这里，排气温度tp一般指第一预设时间段(如5分钟)结束时的排气温度。例如，在某种工况下，目标排气温度TP＝102度，空调器检测到某一时刻，实际排气温度tp＝103度，5分钟后排气温度tp＝108度。那么上述公式中，tp一般取5分钟后排气温度，即108度。Here, the exhaust gas temperature tp generally refers to the exhaust gas temperature at the end of the first predetermined time period (eg, 5 minutes). For example, under certain operating conditions, the target exhaust temperature is TP=102 degrees, the air conditioner detects a certain moment, the actual exhaust temperature tp=103 degrees, and the exhaust temperature tp=108 degrees after 5 minutes. Then, in the above formula, tp generally takes the exhaust temperature after 5 minutes, that is, 108 degrees.
优选地，为了保证用户的使用体验，在对最大频率进行调整时，每次调整幅度不易过大，因此，优选地，所述k的取值范围为1.5≤k≤3。Preferably, in order to ensure the user's experience, when the maximum frequency is adjusted, the adjustment range is not too large each time. Therefore, preferably, the range of k is 1.5≤k≤3.
可以理解的是，本发明所述的预设控制策略并不限于此，凡是能够根据压缩机当前排气温度情况对空调器的最大频率进行调整，以实现对空调器进行保护的控制策略均应落入本发明的保护范围内。例如，每次进行最大功率调整时，均调整一个固定值，如FMAX(n)＝FMAX(n-1)-H，H为固定数值。又或者每次调整时，都是上次调整量H的倍数等。It can be understood that the preset control strategy described in the present invention is not limited thereto, and any control strategy capable of adjusting the maximum frequency of the air conditioner according to the current exhaust temperature of the compressor to achieve protection of the air conditioner should be It falls within the scope of protection of the present invention. For example, each time the maximum power adjustment is made, a fixed value is adjusted, such as FMAX(n)=FMAX(n-1)-H, and H is a fixed value. Or, each time it is adjusted, it is a multiple of the last adjustment amount H.
在一种实施方式中，所述控制模块42，还用于每间隔第二预设时间段，若判断获知当前压缩机的排气温度大于当前工况下的目标排气温度并持续第一预设时间段，则对最近一次调整后的最大频率继续按照所述预设控制策略进行调整。In an embodiment, the control module 42 is further configured to: for each second predetermined period of time, if it is determined that the current exhaust temperature of the compressor is greater than the target exhaust temperature under the current operating condition and continue for the first pre- If the time period is set, the maximum adjusted frequency is continuously adjusted according to the preset control strategy.
为了准确实施对空调器的保护，所述第二预设时间段不宜过长，因此，优选地，所述第二预设时间段为20～40min。In order to accurately implement the protection of the air conditioner, the second preset time period is not excessively long. Therefore, preferably, the second preset time period is 20 to 40 minutes.
可见，本发明实施例在对空调器的最大频率进行一次调整后，并没有置之不管，而是随时根据具体情况进行不断的适应性调整。若在首次调整后的一段时间如30min后，判断获知当前压缩机的排气温度依然大于当前工况下的目标排气温度，则说明冷媒泄露情况依然存在，此时应继续对最大频率进行调整，以改善冷媒泄露状况，同时实现对空调的自动保护。当然若判断获知当前压缩机的排气温度小于或等于当前工况下的目标排气温度，则说明冷媒泄露状况已得到缓解或停止，此时可以控制压缩机按照最近一次调整后的最大频率继续运行。It can be seen that, after the adjustment of the maximum frequency of the air conditioner is performed once, the embodiment of the present invention does not leave a problem, but is continuously adjusted according to specific conditions at any time. If after a period of 30 minutes after the first adjustment, it is judged that the exhaust temperature of the current compressor is still greater than the target exhaust temperature under the current working conditions, the refrigerant leakage still exists, and the maximum frequency should be adjusted at this time. In order to improve the leakage of refrigerant, and at the same time achieve automatic protection of air conditioners. Of course, if it is judged that the exhaust temperature of the current compressor is less than or equal to the target exhaust temperature under the current working condition, the refrigerant leakage condition has been alleviated or stopped, and the compressor can be controlled to continue according to the latest adjusted maximum frequency. run.
在一种实施方式中，所述控制模块42，还用于： In an embodiment, the control module 42 is further configured to:
若判断获知调整后的最大频率小于空调器预先设定的最小频率，则控制压缩机按照所述预先设定的最小频率运行。If it is determined that the adjusted maximum frequency is less than a preset minimum frequency of the air conditioner, the control compressor is operated according to the preset minimum frequency.
在一种实施方式中，所述控制模块42，还用于：In an embodiment, the control module 42 is further configured to:
若判断获知压缩机按照所述预先设定的最小频率连续持续运行超过第三预设时间段，则控制空调器发出故障报告。这里，为了保证空调器免受损坏，所述第三预设时间段不宜过长，一般为3～5小时。If it is determined that the compressor continues to operate continuously for a third predetermined period of time according to the preset minimum frequency, the air conditioner is controlled to issue a fault report. Here, in order to protect the air conditioner from damage, the third predetermined period of time should not be too long, generally 3 to 5 hours.
在一种实施方式中，所述控制模块42，还用于：In an embodiment, the control module 42 is further configured to:
若判断获知当前运行工况发生变化，则控制所述获取模块41获取与变化后的工况对应的最大频率以及目标排气温度，并在检测到压缩机的排气温度大于变化后的工况下的目标排气温度时，按照预设控制策略对变化后的工况下的最大频率进行调整。If it is determined that the current operating condition changes, the acquisition module 41 is controlled to acquire the maximum frequency corresponding to the changed working condition and the target exhaust temperature, and detects that the exhaust temperature of the compressor is greater than the changed operating condition. When the target exhaust temperature is lower, the maximum frequency under the changed operating conditions is adjusted according to a preset control strategy.
由于本实施例所述的控制器可以用于执行上述各实施例所述的控制方法，其原理和技术效果类似，故此处不再赘述。The controller described in this embodiment may be used to perform the control method described in the foregoing embodiments, and the principles and technical effects thereof are similar, and thus are not described herein again.
基于同样的发明构思，本发明第五个实施例提供了一种空调，该空调包括如上面实施例所述的控制器。该空调由于包括上述的控制器，因而可以解决同样的技术问题，并取得相同的技术效果。Based on the same inventive concept, a fifth embodiment of the present invention provides an air conditioner including the controller as described in the above embodiments. Since the air conditioner includes the above-described controller, the same technical problem can be solved and the same technical effects can be obtained.
在本发明的描述中，需要说明的是，术语“上”、“下”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。In the description of the present invention, it is to be noted that the orientation or positional relationship of the terms "upper", "lower" and the like is based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present invention and simplified description. Instead of indicating or implying that the device or component referred to must have a particular orientation, constructed and operated in a particular orientation, it is not to be construed as limiting the invention. Unless specifically stated and limited, the terms "mounted," "connected," and "connected" are used in a broad sense, and may be, for example, a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection, It can also be an electrical connection; it can be directly connected, or it can be connected indirectly through an intermediate medium, which can be the internal connection of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.
还需要说明的是，在本文中，诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺 序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。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、物品或者设备中还存在另外的相同要素。It should also be noted that, in this context, relational terms such as first and second, etc. are used merely to distinguish one entity or operation from another entity or operation, without necessarily requiring or implying such entities or operations. There is any such actual relationship or sequence. Furthermore, the term "comprises" or "comprises" or "comprises" or any other variations thereof is intended to encompass a non-exclusive inclusion, such that a process, method, article, or device that comprises a plurality of elements includes not only those elements but also Other elements, or elements that are inherent to such a process, method, item, or device. An element that is defined by the phrase "comprising a ..." does not exclude the presence of additional equivalent elements in the process, method, item, or device that comprises the element.
以上实施例仅用于说明本发明的技术方案，而非对其限制；尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that The technical solutions are described as being modified, or equivalents are replaced by some of the technical features; and such modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
工业实用性Industrial applicability
本发明所述的冷媒泄露保护控制方法，通过对排气温度采集，来对空调器***冷媒泄漏进行综合判断，在检测获知压缩机的排气温度大于当前运行工况下的目标排气温度时，也即空调器存在冷媒泄漏时，按照预设控制策略对当前运行工况下的最大频率进行调整，以降低当前运行工况下的最大频率，从而实现对空调器的保护，以提高空调器的使用寿命。可见，本发明提供的冷媒泄露保护控制方法，通过对排气温度采集，来对空调器***冷媒泄漏量进行综合判断，从而调整空调器的频率控制逻辑，以达到保护空调器正常运行的目的，即本发明能够在发生冷媒泄露时在不耽误空调工作的同时对空调提供保护，具有工业实用性。 The refrigerant leakage protection control method according to the present invention comprehensively judges the refrigerant leakage of the air conditioner system by collecting the exhaust gas temperature, and when detecting that the exhaust gas temperature of the compressor is greater than the target exhaust temperature under the current operating condition , that is, when there is refrigerant leakage in the air conditioner, the maximum frequency under the current operating conditions is adjusted according to a preset control strategy to reduce the maximum frequency under the current operating conditions, thereby realizing the protection of the air conditioner to improve the air conditioner. The service life. It can be seen that the refrigerant leakage protection control method provided by the present invention comprehensively judges the amount of refrigerant leakage of the air conditioner system by collecting the exhaust gas temperature, thereby adjusting the frequency control logic of the air conditioner to achieve the purpose of protecting the normal operation of the air conditioner. That is, the present invention can provide protection to the air conditioner while not causing the air conditioner to work in the event of refrigerant leakage, and has industrial applicability.

Claims (10)

  1. 一种冷媒泄露保护控制方法，其特征在于，包括：A refrigerant leakage protection control method, comprising:
    获取空调器的当前运行工况，并根据当前运行工况获取与当前运行工况对应的最大频率以及目标排气温度；Obtaining the current operating condition of the air conditioner, and obtaining a maximum frequency corresponding to the current operating condition and a target exhaust temperature according to the current operating condition;
    若检测获知压缩机的排气温度大于当前运行工况下的目标排气温度并持续第一预设时间段，则按照预设控制策略对当前运行工况下的最大频率进行调整，以降低当前运行工况下的最大频率。If the detection knows that the exhaust temperature of the compressor is greater than the target exhaust temperature under the current operating condition and continues for the first preset time period, the maximum frequency under the current operating condition is adjusted according to a preset control strategy to reduce the current The maximum frequency under operating conditions.
  2. 根据权利要求1所述的方法，其特征在于，在对当前运行工况下的最大频率进行调整后，所述方法还包括：The method of claim 1 further comprising: after adjusting the maximum frequency of the current operating condition, the method further comprising:
    每间隔第二预设时间段，若判断获知当前压缩机的排气温度大于当前工况下的目标排气温度并持续第一预设时间段，则对最近一次调整后的最大频率继续按照所述预设控制策略进行调整。For every second preset period of time, if it is determined that the exhaust temperature of the current compressor is greater than the target exhaust temperature under the current working condition and continues for the first preset time period, the maximum frequency after the last adjustment is continued according to the The preset control strategy is adjusted.
  3. 根据权利要求2所述的方法，其特征在于，若判断获知当前压缩机的排气温度小于或等于当前工况下的目标排气温度，则控制压缩机按照最近一次调整后的最大频率继续运行。The method according to claim 2, wherein if it is determined that the exhaust temperature of the current compressor is less than or equal to the target exhaust temperature under the current operating condition, the compressor is controlled to continue operating according to the most recently adjusted maximum frequency. .
  4. 根据权利要求1～3任一项所述的方法，其特征在于，所述预设控制策略包括：The method according to any one of claims 1 to 3, wherein the preset control strategy comprises:
    FMAX(n)＝FMAX(n-1)-k*θ；FMAX(n)=FMAX(n-1)-k*θ;
    其中，n≥1，当n＝1时，FMAX(n-1)为当前运行工况对应的最大频率，FMAX(n)为首次调整后最大频率，θ为首次检测到的压缩机的排气温度tp与当前工况下的目标排气温度TP的差值，即θ＝tp-TP，k≥1；Where n≥1, when n=1, FMAX(n-1) is the maximum frequency corresponding to the current operating condition, FMAX(n) is the maximum frequency after the first adjustment, and θ is the exhaust of the first detected compressor. The difference between the temperature tp and the target exhaust temperature TP under the current working condition, that is, θ=tp-TP, k≥1;
    当n＞1时，FMAX(n-1)为与本次调整最邻近的一次调整后的最大频率，FMAX(n)为本次调整后的最大频率；θ为本次检测到的压缩机的排气温度tp与当前工况下的目标排气温度TP的差值，即θ＝tp-TP，k≥1。When n>1, FMAX(n-1) is the adjusted maximum frequency closest to this adjustment, FMAX(n) is the adjusted maximum frequency; θ is the detected compressor The difference between the exhaust gas temperature tp and the target exhaust gas temperature TP under the current operating conditions, that is, θ=tp-TP, k≥1.
  5. 根据权利要求4所述的方法，其特征在于，所述k的取值范围 为1.5≤k≤3。Method according to claim 4, characterized in that said range of values of k It is 1.5 ≤ k ≤ 3.
  6. 根据权利要求1～3任一项所述方法，其特征在于，所述方法还包括：The method according to any one of claims 1 to 3, wherein the method further comprises:
    若判断获知调整后的最大频率小于空调器预先设定的最小频率，则控制压缩机按照所述预先设定的最小频率运行。If it is determined that the adjusted maximum frequency is less than a preset minimum frequency of the air conditioner, the control compressor is operated according to the preset minimum frequency.
  7. 根据权利要求6所述的方法，其特征在于，所述方法还包括：The method of claim 6 wherein the method further comprises:
    若判断获知压缩机按照所述预先设定的最小频率连续持续运行超过第三预设时间段，则控制空调器发出故障报告。If it is determined that the compressor continues to operate continuously for a third predetermined period of time according to the preset minimum frequency, the air conditioner is controlled to issue a fault report.
  8. 根据权利要求1～3任一项所述的方法，其特征在于，所述方法还包括：The method according to any one of claims 1 to 3, further comprising:
    若判断获知当前运行工况发生变化，则获取与变化后的工况对应的最大频率以及目标排气温度，并在检测到压缩机的排气温度大于变化后的工况下的目标排气温度时，按照预设控制策略对变化后的工况下的最大频率进行调整。If it is determined that the current operating condition changes, the maximum frequency corresponding to the changed working condition and the target exhaust temperature are obtained, and the target exhaust temperature under the condition that the compressor exhaust temperature is greater than the changed condition is detected. At the time, the maximum frequency under the changed operating conditions is adjusted according to the preset control strategy.
  9. 一种控制器，其特征在于，包括：A controller, comprising:
    获取模块，用于获取空调器的当前运行工况，并根据当前运行工况获取与当前运行工况对应的最大频率以及目标排气温度；Obtaining a module, configured to acquire a current operating condition of the air conditioner, and obtain a maximum frequency corresponding to the current operating condition and a target exhaust temperature according to the current operating condition;
    控制模块，用于在检测获知压缩机的排气温度大于当前运行工况下的目标排气温度时，按照预设控制策略对当前运行工况下的最大频率进行调整，以降低当前运行工况下的最大频率。The control module is configured to adjust the maximum frequency of the current operating condition according to a preset control strategy when detecting that the exhaust temperature of the compressor is greater than the target exhaust temperature under the current operating condition, so as to reduce the current operating condition. The maximum frequency below.
  10. 一种空调，其特征在于，包括如权利要求9所述的控制器。 An air conditioner comprising the controller of claim 9.
PCT/CN2016/104163 2016-09-29 2016-10-31 Refrigerant leakage protection and control method, controller, and air conditioner WO2018058732A1 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111766815A (en) * 2020-07-14 2020-10-13 上海威派格智慧水务股份有限公司 Operation monitoring system of water affair equipment
CN113639401A (en) * 2021-07-08 2021-11-12 青岛海尔空调电子有限公司 Refrigerant leakage detection control method of air conditioner
CN113847705A (en) * 2021-09-30 2021-12-28 广东美的制冷设备有限公司 Air conditioner, quick detection method and device thereof and storage medium
CN114777284A (en) * 2022-04-15 2022-07-22 珠海格力电器股份有限公司 Refrigerant-shortage protection method and device for air conditioner, storage medium and air conditioner

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107036256B (en) * 2017-05-31 2019-06-11 广东美的制冷设备有限公司 The control method of delivery temperature, the control device of delivery temperature and air conditioner
CN107621047A (en) * 2017-08-15 2018-01-23 珠海格力电器股份有限公司 The control method and device of air-conditioner set
CN107560098B (en) * 2017-10-30 2020-03-17 奥克斯空调股份有限公司 Air conditioner control method and air conditioner
CN107940694A (en) * 2017-11-16 2018-04-20 珠海格力电器股份有限公司 The exhaust protection control method and system of a kind of air conditioner
CN110940048B (en) * 2018-09-21 2021-04-27 奥克斯空调股份有限公司 Refrigerant leakage detection method and air conditioner
CN109595741A (en) * 2018-11-30 2019-04-09 广东美的制冷设备有限公司 Air-conditioning and its coolant leakage detection method and device
CN111380185B (en) * 2020-03-27 2021-10-26 广东美的制冷设备有限公司 Compressor exhaust temperature frequency limiting control method, air conditioner and readable storage medium
CN114413408A (en) * 2020-10-28 2022-04-29 广东美的精密模具科技有限公司 Air conditioner and fault identification method, identification device and readable storage medium thereof
CN115406054A (en) * 2021-05-27 2022-11-29 美的集团股份有限公司 Refrigerant leakage detection method and device, air conditioner and storage medium
CN115992988B (en) * 2022-11-28 2024-05-28 珠海格力电器股份有限公司 Exhaust control method, device, equipment and medium of portable air conditioner compressor

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010062946A (en) * 1999-12-21 2001-07-09 윤종용 method for sensing leak of refrigerant in air conditioner
KR20050034084A (en) * 2003-10-08 2005-04-14 위니아만도 주식회사 Method for controlling exhausted temperature by compressor of multi type air-conditioner
KR100661144B1 (en) * 2005-11-01 2006-12-26 주식회사 대우일렉트로닉스 Method for sensing refrigerants leakage of multi-air conditioner
CN104949266A (en) * 2015-06-04 2015-09-30 广东美的制冷设备有限公司 Air conditioner and refrigerant leakage detection method of air conditioner
CN105091215A (en) * 2015-07-24 2015-11-25 珠海格力电器股份有限公司 Fluorine lack start-up detection method and device for multi-split air-conditioner

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1194376A (en) * 1997-09-19 1999-04-09 Sanden Corp Compressor-protecting device
JP5398571B2 (en) * 2010-02-15 2014-01-29 三菱重工業株式会社 Air conditioner
CN105588296B (en) * 2015-01-20 2018-07-27 海信（山东）空调有限公司 A kind of control method and control device of convertible frequency air-conditioner
CN105605739B (en) * 2016-01-12 2018-09-11 广东美的制冷设备有限公司 The monitoring method and device of air-conditioning system and its coolant leakage
CN105928156B (en) * 2016-05-12 2018-08-07 广东美的制冷设备有限公司 Coolant leakage detection method, coolant leakage detection device and air conditioner

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010062946A (en) * 1999-12-21 2001-07-09 윤종용 method for sensing leak of refrigerant in air conditioner
KR20050034084A (en) * 2003-10-08 2005-04-14 위니아만도 주식회사 Method for controlling exhausted temperature by compressor of multi type air-conditioner
KR100661144B1 (en) * 2005-11-01 2006-12-26 주식회사 대우일렉트로닉스 Method for sensing refrigerants leakage of multi-air conditioner
CN104949266A (en) * 2015-06-04 2015-09-30 广东美的制冷设备有限公司 Air conditioner and refrigerant leakage detection method of air conditioner
CN105091215A (en) * 2015-07-24 2015-11-25 珠海格力电器股份有限公司 Fluorine lack start-up detection method and device for multi-split air-conditioner

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111766815A (en) * 2020-07-14 2020-10-13 上海威派格智慧水务股份有限公司 Operation monitoring system of water affair equipment
CN113639401A (en) * 2021-07-08 2021-11-12 青岛海尔空调电子有限公司 Refrigerant leakage detection control method of air conditioner
CN113847705A (en) * 2021-09-30 2021-12-28 广东美的制冷设备有限公司 Air conditioner, quick detection method and device thereof and storage medium
CN114777284A (en) * 2022-04-15 2022-07-22 珠海格力电器股份有限公司 Refrigerant-shortage protection method and device for air conditioner, storage medium and air conditioner

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