CN115200161B - Air conditioner refrigerant detection method, system and detection equipment - Google Patents

Air conditioner refrigerant detection method, system and detection equipment Download PDF

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Publication number
CN115200161B
CN115200161B CN202210719208.3A CN202210719208A CN115200161B CN 115200161 B CN115200161 B CN 115200161B CN 202210719208 A CN202210719208 A CN 202210719208A CN 115200161 B CN115200161 B CN 115200161B
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refrigerant
compressor
value
air conditioner
power
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CN115200161A (en
Inventor
李倍宇
田雅颂
廖敏
连彩云
熊绍森
徐耿彬
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32—Responding to malfunctions or emergencies
    • F24F11/36—Responding to malfunctions or emergencies to leakage of heat-exchange fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61—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
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/88—Electrical aspects, e.g. circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F24F2110/12—Temperature of the outside air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/20—Heat-exchange fluid temperature

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

Abstract

The invention provides a method, a system and equipment for detecting air conditioner refrigerants. The detection method comprises the following steps: in a fluorine deficiency detection mode, acquiring values of a plurality of operation parameters of the air conditioner, wherein the plurality of operation parameters comprise actual power of a compressor; inputting values of other parameters except the actual power of the compressor in the plurality of operation parameters into a standard refrigerant state compressor power prediction model to obtain a standard refrigerant state compressor power prediction value, wherein the standard refrigerant state compressor power prediction value is a compressor power prediction value of an air conditioner operated in a current operation state under the condition that the refrigerant quantity is a rated refrigerant quantity; and judging the refrigerant quantity condition of the air conditioner according to the standard refrigerant state compressor power predicted value and the actual compressor power. The detection method provided by the invention can effectively detect the fluorine deficiency state of the air conditioner, avoid leakage and waste of the refrigerant in the fluorine deficiency filling process, and improve the accuracy of refrigerant filling.

Description

Air conditioner refrigerant detection method, system and detection equipment
Technical Field
The invention belongs to the field of air conditioners, and particularly relates to a method, a system and equipment for detecting refrigerants of an air conditioner.
Background
At present, the split heat pump air conditioner in the state of lack of fluorine is filled with the refrigerant, on one hand, the refrigerant is refilled after the refrigerant is emptied; on the other hand, after-sales maintenance personnel supplement the refrigerant according to experience. The former method has the advantages of short maintenance time, accurate refrigerant filling amount, serious refrigerant waste, difficult recycling of the discharged refrigerant and easy environmental pollution; the latter method has the advantages that only the refrigerant lacking in the system needs to be supplemented, no refrigerant leaks, the maintenance time is long, the refrigerant filling amount can only be judged by experience of maintenance personnel, and the accuracy of the refrigerant amount of the air conditioner is difficult to ensure.
The present invention has been made in view of this.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a method, a system and a device for detecting the refrigerant of an air conditioner, which can effectively detect the fluorine deficiency state of the air conditioner in the state that the air conditioner is not stopped, avoid leakage and waste of the refrigerant in the fluorine deficiency filling process and improve the accuracy of the refrigerant filling.
In order to solve the technical problems, the invention provides a method for detecting the refrigerant quantity of an air conditioner, which comprises the following steps:
In a fluorine deficiency detection mode, acquiring values of a plurality of operation parameters of the air conditioner, wherein the plurality of operation parameters comprise actual power of a compressor;
Inputting values of other parameters except the actual power of the compressor in the plurality of operation parameters into a standard refrigerant state compressor power prediction model to obtain a standard refrigerant state compressor power prediction value, wherein the standard refrigerant state compressor power prediction value is a compressor power prediction value of an air conditioner operated in a current operation state under the condition that the refrigerant quantity is a rated refrigerant quantity;
and judging the refrigerant quantity condition of the air conditioner according to the standard refrigerant state compressor power predicted value and the actual compressor power.
Further alternatively, acquiring values of a plurality of operating parameters of the air conditioner includes:
acquiring the value of each operation parameter according to a preset time interval within a preset time length to obtain a plurality of values of each operation parameter;
determining the acquisition times, and summing a plurality of values of each operation parameter to obtain a sum value of each operation parameter;
and calculating the average value of each operation parameter in the preset duration according to the sum value and the acquisition times of each operation parameter, and taking the average value of each operation parameter as the value of each operation parameter.
Further optionally, the value range of the first preset duration is: more than or equal to 3min and less than or equal to 5min; the value range of the second preset duration is as follows: greater than or equal to 3s and less than or equal to 5s.
Further optionally, the plurality of operating parameters includes: outdoor ambient temperature, outdoor heat exchanger tube temperature, indoor ambient temperature, indoor heat exchanger tube temperature, outdoor unit alternating current, compressor phase current, and compressor actual power.
Further optionally, calculating values of a plurality of operating parameters by using a standard refrigerant state compressor power prediction model to obtain a standard refrigerant state compressor power prediction value, including calculating according to the following preset formula:
P' Predicting compressor power ＝AT Outer tube temperature +BT External ring temperature +CT inner tube temperature +DT Inner ring temperature +EI External machine AC Electric current +FI compressor phase current ；
wherein, P' Predicting compressor power is the predicted value of the compressor power in the standard refrigerant state, A, B, C, D, E, F is the coefficient, T External ring temperature is the outdoor environment temperature, T Outer tube temperature is the outdoor heat exchanger tube temperature, T Inner ring temperature is the indoor environment temperature, T inner tube temperature is the indoor heat exchanger tube temperature, I External machine AC Electric current is the outdoor AC current, and I compressor phase current is the compressor phase current.
Further optionally, the judging the refrigerant quantity condition of the air conditioner according to the predicted value of the power of the compressor in the standard refrigerant state and the actual power value of the compressor includes:
when the actual power value of the compressor is smaller than the predicted power value of the compressor in the standard refrigerant state, judging that the refrigerant quantity is insufficient;
When the actual power value of the compressor is equal to the predicted power value of the compressor in the standard refrigerant state, judging that the refrigerant quantity is proper;
And when the actual power value of the compressor is larger than the predicted power value of the compressor in the standard refrigerant state, judging that the refrigerant quantity is excessive.
Further optionally, the detection method further includes:
when the refrigerant quantity is judged to be insufficient, monitoring a first difference value between the actual power value of the compressor and the predicted power value of the standard refrigerant state compressor;
And controlling the opening and closing of the refrigerant filling valve according to the first difference value, and controlling the filling rate and the filling time of the refrigerant under the condition that the refrigerant filling valve is opened.
Further optionally, controlling a charging rate and a charging duration of charging the refrigerant to the air conditioner according to the first difference value, and controlling opening and closing of the refrigerant charging valve, including:
Calculating a first ratio of the first difference to a power predicted value of the standard refrigerant state compressor;
When the first ratio is smaller than or equal to a first threshold value, the refrigerant filling valve is opened, the filling rate is a first preset rate, and the filling time is a first preset time;
When the first ratio is greater than or equal to the second threshold value and smaller than the third threshold value, the refrigerant filling valve is opened, the filling rate is a second preset rate, and the filling time is a second preset time;
when the first ratio is greater than or equal to a third threshold value, the refrigerant filling valve is closed, and the refrigerant filling into the air conditioner is stopped;
wherein the first threshold is less than the second threshold,
The value range of the first preset rate is as follows: greater than or equal to 15g/min and less than or equal to 30g/min,
The value range of the second preset rate is as follows: greater than or equal to 5g/min and less than or equal to 15g/min. Further optionally, the detection method further includes calculating a refrigerant charge according to the following calculation formula:
ΣG Filling quantity ＝V1·T1+V2·T2；
Wherein V 1 is a first preset rate, V 2 is a second preset rate, T 1 is a first preset duration, and T 2 is a second preset duration.
Further optionally, the detection method further includes:
when the refrigerant quantity is judged to be excessive, monitoring a second difference value between the actual power value of the compressor and the power predicted value of the standard refrigerant state compressor;
and controlling the opening and closing of the refrigerant pressure relief valve according to the second difference value, and controlling the discharge rate and the discharge duration of the refrigerant under the condition that the refrigerant pressure relief valve is opened.
Further optionally, controlling the opening and closing of the refrigerant pressure release valve according to the second difference value, and controlling the discharge rate and the discharge duration of the refrigerant when the refrigerant pressure release valve is opened, including:
calculating a second ratio of the second difference to the power predicted value of the standard refrigerant state compressor;
when the second ratio is greater than or equal to a fourth threshold, the refrigerant pressure release valve is opened, the discharge rate is a third preset rate, and the discharge duration is a third preset duration;
when the second ratio is greater than or equal to the fifth threshold and smaller than the fourth threshold, the refrigerant pressure release valve is opened, the discharge rate is a fourth preset rate, and the discharge duration is a fourth preset duration;
when the second ratio is smaller than or equal to a sixth threshold value, the refrigerant pressure release valve is closed, and the discharge of the refrigerant from the air conditioner is stopped;
wherein the fifth threshold is greater than the sixth threshold,
The value range of the third preset rate is as follows: greater than or equal to 7g/min and less than or equal to 12g/min,
The value range of the fourth preset rate is as follows: greater than 0g/min and less than or equal to 10g/min.
Further optionally, the detection method further includes calculating a refrigerant discharge amount according to the following calculation formula:
∑G Drawing and discharging amount ＝V3·T3+V4·T4；
Wherein V 3 is a third preset rate, V 4 is a fourth preset rate, T 1 is a third preset duration, and T 2 is a fourth preset duration.
The invention also provides a system for detecting the refrigerant quantity of the air conditioner, which comprises:
The data acquisition module is used for acquiring values of a plurality of operation parameters of the air conditioner in a fluorine deficiency detection mode, wherein the plurality of operation parameters comprise actual power of the compressor;
The compressor power prediction module is used for inputting values of other parameters except the actual power of the compressor in the plurality of operation parameters into the standard refrigerant state compressor power prediction model to obtain a standard refrigerant state compressor power prediction value, wherein the standard refrigerant state compressor power prediction value is a compressor power prediction value of an air conditioner running in a current operation state under the condition that the refrigerant quantity is a rated refrigerant quantity;
and the refrigerant filling control module is used for judging the refrigerant quantity condition of the air conditioner according to the standard refrigerant state compressor power predicted value and the compressor actual power value.
The invention also provides an air conditioner refrigerant quantity detection system, which comprises one or more processors and a non-transitory computer readable storage medium storing program instructions, wherein when the one or more processors execute the program instructions, the one or more processors are used for realizing the method of any one of the technical schemes.
The invention also provides a detection device which adopts the method of any one of the technical schemes or a system comprising any one of the technical schemes.
After the technical scheme is adopted, compared with the prior art, the invention has the following beneficial effects: in the state that the air conditioner is not stopped, the compressor power of the air conditioner in the standard refrigerant state can be effectively predicted by detecting a plurality of operation parameters of the air conditioner in the fluorine deficiency detection mode and inputting the operation parameters into the standard refrigerant state compressor power prediction model. The refrigerant quantity condition can be effectively judged by comparing the power predicted value of the standard refrigerant state compressor with the actual power value of the compressor. By monitoring the variation of the difference between the predicted power value of the standard refrigerant state compressor and the actual power value of the compressor, the filling/discharging rate and the filling/discharging duration of the refrigerant filling/discharging process can be controlled, so that the leakage and waste of the refrigerant in the fluorine-deficiency filling process can be avoided, and the accuracy of refrigerant filling can be improved.
The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. It is evident that the drawings in the following description are only examples, from which other drawings can be obtained by a person skilled in the art without the inventive effort. In the drawings:
Fig. 1 is a flow chart of a method for detecting a refrigerant amount of an air conditioner according to an embodiment of the invention.
Fig. 2 is a flow chart of a method for detecting a refrigerant amount of an air conditioner according to an embodiment of the invention.
Fig. 3 is a flow chart of a method for detecting a refrigerant amount of an air conditioner according to an embodiment of the invention.
Fig. 4 is a flow chart of a method for detecting a refrigerant amount of an air conditioner according to an embodiment of the invention.
Fig. 5 is a flowchart illustrating a method for detecting a refrigerant amount of an air conditioner according to an embodiment of the present invention.
Fig. 6 is a schematic block diagram of an air conditioner refrigerant amount detection system according to an embodiment of the present invention.
FIG. 7 is a schematic diagram illustrating verification of a standard refrigerant state compressor power prediction model in accordance with an embodiment of the present invention.
Fig. 8 is a control flow chart of a refrigerant amount detecting method of an air conditioner according to an embodiment of the present invention.
It should be noted that these drawings and the written description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to those skilled in the art by referring to the specific embodiments.
Detailed Description
In the description of the present invention, it should be noted that the azimuth or positional relationship indicated by the terms "inner", "outer", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "contacting," and "communicating" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In order to further explain the technical scheme in the invention, the fluorine deficiency detection mode in the related embodiment is first described. Under the condition that the air conditioner is not stopped, a user sets the operation parameters of the air conditioner, including the frequency of a compressor, the windshield of an inner fan, the wind shield of an outer fan, the operation mode and the like, through a remote controller or other control terminals (such as a mobile phone), so that the air conditioner operates in the fluorine deficiency detection mode.
Specifically, the frequency of the air conditioner compressor is set through the remote controller, so that the compressor operates according to a target frequency value, the range of the target frequency value is between 10Hz and 90Hz, and the target frequency value is preferably one of 60Hz, 45Hz and 30 Hz;
setting an air conditioner operation mode through a remote controller, wherein the operation mode is preferably a refrigeration and heating mode;
Setting a fan wind shield in the air conditioner through a remote controller, wherein the wind shield is preferably a super strong wind shield and a high wind shield in a plurality of preset wind shields;
the air shield of the air conditioner external fan is set through the remote controller, and is not required to be set in general, and the air shield is in a free mode.
Preferably, the air conditioner according to the related embodiment of the present invention is a split heat pump air conditioner.
The method for predicting the refrigerant quantity of the air conditioner according to the embodiment of the invention is further described below with reference to the accompanying drawings.
Fig. 1 is a flow chart of a method for detecting a refrigerant amount of an air conditioner according to an embodiment of the invention. Referring to fig. 1, the detection method includes:
s1, when the air conditioner operates in a fluorine deficiency detection mode, acquiring values of a plurality of operation parameters of the air conditioner, wherein the plurality of operation parameters comprise actual power of a compressor;
Under the condition that the air conditioner is not stopped, a detector sets the operation parameters of the air conditioner, including the frequency of a compressor, the wind shield of an inner fan, the wind shield of an outer fan, the operation mode and the like, through a remote controller, so that the air conditioner operates in a fluorine deficiency detection mode. T Outer tube temperature 、T External ring temperature 、T inner tube temperature 、T Inner ring temperature 、I External machine AC Electric current 、I compressor phase current and P Compressor actual power are collected from the air conditioner operating parameters.
S2, inputting values of other parameters except the actual power of the compressor in the plurality of operation parameters into a standard refrigerant state compressor power prediction model to obtain a standard refrigerant state compressor power prediction value, wherein the standard refrigerant state compressor power prediction value is a compressor power prediction value of an air conditioner running in a current operation state under the condition that the refrigerant quantity is a rated refrigerant quantity;
Because the compressor power of the air conditioner in the standard refrigerant state can only be obtained under the experimental working condition, the embodiment of the invention provides a standard refrigerant state compressor power prediction model. By inputting the values of a plurality of operation parameters of the air conditioner under the fluorine deficiency detection model into the standard refrigerant state compressor power prediction model, the compressor power prediction value of the air conditioner running in the current operation state under the condition that the refrigerant quantity is the rated refrigerant quantity (namely, under the standard refrigerant state) can be effectively predicted. Referring to fig. 7, the error between the standard refrigerant state compressor power predicted value calculated by the standard refrigerant state compressor power prediction model and the standard compressor power obtained under the experimental working condition according to the embodiment of the present invention can be guaranteed to be within 10%, so that the standard refrigerant state compressor power predicted value can be used to replace the standard compressor power to a certain extent.
The standard refrigerant state compressor power prediction model can be understood as a mapping relation/functional relation between an input parameter and an output parameter, for example, a neural network model, an equation and the like. Specifically, the system is preferably composed of T Outer tube temperature 、T External ring temperature 、T inner tube temperature 、T Inner ring temperature 、I External machine AC Electric current and I compressor phase current , and is used for predicting a predicted value P' Predicting compressor power ;P′ Predicting compressor power of the compressor power in a standard refrigerant state when the air conditioner operates under the current working condition under the condition that the refrigerant filling amount is a rated refrigerant, wherein when the air conditioner operates under the standard refrigerant state, the system parameters are the predicted values of P Standard state compressor power when the system parameters are T Outer tube temperature 、T External ring temperature 、T inner tube temperature 、T Inner ring temperature 、I External machine AC Electric current and I compressor phase current sent by the current data processing module;
the standard refrigerant state compressor power prediction equation, namely the standard refrigerant state compressor power prediction model, is as follows:
P' Predicting compressor power ＝AT Outer tube temperature +BT External ring temperature +CT inner tube temperature +DT Inner ring temperature +EI External machine AC Electric current +FI compressor phase current
the data processing module sends the processed T Outer tube temperature 、T External ring temperature 、T inner tube temperature 、T Inner ring temperature 、I External machine AC Electric current and I compressor phase current to a standard refrigerant state compressor power prediction model, and the program calculates and obtains a P' Predicting compressor power value according to the equation;
S3, judging the refrigerant quantity condition of the air conditioner according to the standard refrigerant state compressor power predicted value and the compressor actual power value.
The current refrigerant quantity condition of the air conditioner, such as whether the refrigerant quantity is proper, insufficient, excessive and the like, can be effectively judged by comparing the standard refrigerant state compressor power predicted value with the compressor actual power value. The method of the embodiment is suitable for different refrigerant quantity detection scenes, including fluorine deficiency detection, refrigerant quantity detection in the process of filling the refrigerant and refrigerant quantity detection in the process of discharging the refrigerant.
Wherein the acquisition of the actual power value of the compressor can also be integrated into the step S1, and the actual power of the compressor is acquired as one of the operation parameters. However, it should be noted that the actual power value of the compressor is not used as an input parameter of the standard refrigerant state compressor power prediction model according to the embodiments of the present invention. After the data processing module calculates the average value of the actual power values of the compressors acquired in the preset time period, the average value is used as the actual power of the compressors to participate in the judgment of the refrigerant quantity condition.
Further alternatively, in combination with the flow chart of fig. 2, step S1 includes steps S11 to S13, wherein:
S11, acquiring the value of each operation parameter according to a preset time interval within a preset time length to obtain a plurality of values of each operation parameter;
s12, determining the acquisition times, and summing a plurality of values of each operation parameter to obtain a sum value of each operation parameter;
And S13, calculating the average value of each operation parameter in a preset duration according to the sum value and the acquisition times of each operation parameter, and taking the average value of each operation parameter as the value of each operation parameter.
In this embodiment, by acquiring an average value of each of a plurality of operating parameters over a period of time and using the average value as an input parameter of a standard refrigerant state compressor power prediction model, the average value of the parameters is calculated by using the standard refrigerant state compressor power prediction model to obtain a standard refrigerant state compressor power prediction value, and a situation that the fluctuation amount of the operating parameters is large can be shielded, so that prediction accuracy is ensured.
Specifically, the acquired operation parameters T Outer tube temperature 、T External ring temperature 、T inner tube temperature 、T Inner ring temperature 、I External machine AC Electric current 、I compressor phase current and P Compressor actual power are stored in the data processing module at intervals of T 1, T 1 is preferably 5s, the total acquisition time period T 2 is preferably 5min, and T 2 is preferably 5min;
T Outer tube temperature is stored in the data processing module as:
t External ring temperature is stored in the data processing module as:
t inner tube temperature is stored in the data processing module as:
t Inner ring temperature is stored in the data processing module as:
I External machine AC Electric current is stored in the data processing module as:
I compressor phase current is stored in the data processing module as:
p Compressor actual power is stored in the data processing module as:
wherein n is the acquisition times,
Further optionally, the value range of the first preset duration is: more than or equal to 3min and less than or equal to 5min; the value range of the second preset duration is as follows: greater than or equal to 3s and less than or equal to 5s.
Specifically, the first preset duration may be 3min, 4min, 5min, and the second preset duration may be 3s, 4s, 5s, but is not limited thereto.
Further optionally, the plurality of operating parameters includes: outdoor ambient temperature, outdoor heat exchanger tube temperature, indoor ambient temperature, indoor heat exchanger tube temperature, outdoor unit alternating current, compressor phase current, and compressor actual power.
The actual power of the compressor is not used as an input parameter of a compressor power model, and when the condition of the refrigerant quantity is judged, the actual power of the compressor is compared with a predicted value of the power of the compressor in a standard refrigerant state, so that the condition of the refrigerant quantity is judged.
Further alternatively, the standard refrigerant state compressor power prediction model employs the following formula:
P' Predicting compressor power ＝AT Outer tube temperature +BT External ring temperature +CT inner tube temperature +DT Inner ring temperature +EI External machine AC Electric current +FI compressor phase current ；
wherein, P' Predicting compressor power is the predicted value of the compressor power in the standard refrigerant state, A, B, C, D, E, F is the coefficient, T External ring temperature is the outdoor environment temperature, T Outer tube temperature is the outdoor heat exchanger tube temperature, T Inner ring temperature is the indoor environment temperature, T inner tube temperature is the indoor heat exchanger tube temperature, I External machine AC Electric current is the outdoor AC current, and I compressor phase current is the compressor phase current.
Further alternatively, in combination with the flowchart of fig. 3, step S3 includes steps S31 to S34, wherein:
S31, comparing a power predicted value of the standard refrigerant state compressor with an actual power value of the compressor;
s32, when the actual power value of the compressor is smaller than the predicted power value of the compressor in the standard refrigerant state, judging that the refrigerant quantity is insufficient;
S33, judging that the refrigerant quantity is proper when the actual power value of the compressor is equal to the predicted power value of the compressor in the standard refrigerant state;
and S34, when the actual power value of the compressor is larger than the predicted power value of the compressor in the standard refrigerant state, judging that the refrigerant quantity is excessive.
In this embodiment, based on the comparison between the preset compressor power and the actual power value of the compressor, the refrigerant quantity condition of the air conditioner can be effectively determined, and the method is provided for the refrigerant filling of the air conditioner in the fluorine-deficient state, so that the leakage and waste of the refrigerant in the fluorine-deficient filling process can be avoided, and the accuracy of the refrigerant filling can be improved.
Further optionally, when the refrigerant quantity is determined to be insufficient, prompting the user that the refrigerant quantity is insufficient; when the excess refrigerant quantity is determined, the excess refrigerant quantity is presented to the user.
Further optionally, in combination with the flowchart of fig. 3, when the refrigerant quantity is determined to be insufficient, the detection method further includes steps S5 to S6, where:
S4, monitoring a first difference value between the actual power value of the compressor and the predicted power value of the standard refrigerant state compressor;
S5, controlling the opening and closing of the refrigerant filling valve according to the first difference value, and controlling the filling rate and the filling time of the refrigerant under the condition that the refrigerant filling valve is opened.
When the refrigerant quantity is judged to be insufficient, whether the air conditioner is in a fluorine-deficient state or not can be judged by calculating a first difference value between the actual power value of the compressor and the predicted power value of the standard refrigerant state compressor, and if the air conditioner is in the fluorine-deficient state, refrigerant filling can be carried out. In the refrigerant filling process, a first difference value between the actual power value of the compressor and the predicted power value of the standard refrigerant state compressor can be continuously monitored, so that the filling rate and the filling time of the refrigerant are controlled, and the opening and closing of the refrigerant filling valve are controlled, so that the refrigerant filling of the air conditioner is completed.
Further alternatively, in combination with the flowchart of fig. 4, step S5 includes steps S51 to S54, wherein:
S51, calculating a first ratio of the first difference value to a power predicted value of the standard refrigerant state compressor;
S52, when the first ratio is smaller than or equal to a first threshold value, the refrigerant filling valve is opened, the filling rate is a first preset rate, and the filling duration is a first preset duration;
S53, when the first ratio is greater than or equal to a second threshold value and smaller than a third threshold value, the refrigerant filling valve is opened, the filling rate is a second preset rate, and the filling duration is a second preset duration;
S54, when the first ratio is greater than or equal to a third threshold value, the refrigerant filling valve is closed, and the refrigerant filling into the air conditioner is stopped;
wherein the first threshold is less than the second threshold.
In a specific embodiment, the first threshold is-20%, the second threshold is-10%, and the third threshold is-5%.
Further optionally, the range of values of the first preset rate is: the value range of the second preset speed is that the speed is larger than or equal to 15g/min and smaller than or equal to 30 g/min: greater than or equal to 5g/min and less than or equal to 15g/min.
Specifically, the first preset rate may be 15g/min, 20g/min, 25g/min, 30g/min, preferably the first preset rate is 20g/min. The second preset rate may be 5g/min, 10g/min, 15g/min, preferably the second preset rate is 10g/min.
It can be understood that, after monitoring the first ratio between the first difference value and the predicted value of the power of the standard refrigerant state compressor once and executing one refrigerant filling according to the interval range where the first difference value is located, the system will monitor the first ratio again and judge the interval range where the first ratio is monitored again so as to adjust the refrigerant filling rate and the filling time, thus effectively detecting the fluorine deficiency state of the air conditioner, avoiding the leakage and waste of the refrigerant in the fluorine deficiency filling process and improving the accuracy of refrigerant filling.
Specifically, when the pressure of P actual power value of compressor -P′ Predicting compressor power )/P′ Predicting compressor power is less than or equal to-20%, the refrigerant filling valve is opened, the air conditioner is filled with the refrigerant at the speed of V 1 g/min, the value range of V 1 is 15-30, the optimal value is 20, and the accumulated filling time is recorded as T 1;
When the (P actual power value of compressor -P′ Predicting compressor power )/P′ Predicting compressor power is more than or equal to-10 percent), the refrigerant filling valve is opened, the air conditioner is filled with the refrigerant at the speed of V 2 g/min, the value range of V 2 is 5-15, the optimal value is 10, and the accumulated filling time is recorded as T 2;
When (P actual power value of compressor -P′ Predicting compressor power )/P′ Predicting compressor power is more than or equal to-5 percent), the refrigerant filling valve is closed, and the refrigerant filling to the air conditioner is stopped, and further optionally, the detection method further comprises the following steps of calculating the refrigerant filling amount according to the following calculation formula:
∑G Filling quantity ＝V1·T1+V2·T2；
Wherein V 1 is a first preset rate, V 2 is a second preset rate, T 1 is a first preset duration, and T 2 is a second preset duration.
Further optionally, in combination with the flowchart of fig. 2, when the refrigerant quantity is determined to be excessive, the detection method further includes steps S6 to S7, where: the detection method further comprises the following steps:
s6, monitoring a second difference value between the actual power value of the compressor and the predicted power value of the standard refrigerant state compressor;
And S7, controlling the opening and closing of the refrigerant pressure relief valve according to the second difference value, and controlling the discharge rate and the discharge duration of the refrigerant under the condition that the refrigerant pressure relief valve is opened.
When the excess refrigerant quantity is judged, whether the excess refrigerant in the air conditioner is required to be discharged or not can be judged through a second difference value between the actual power value of the compressor and the predicted power value of the standard refrigerant state compressor. In the process of discharging the refrigerant, the two difference values between the actual power value of the compressor and the predicted power value of the standard refrigerant state compressor can be monitored in real time, so that the discharge rate and the discharge duration of the refrigerant are controlled, and the opening and closing of the refrigerant pressure release valve are controlled, so that the discharge of excessive refrigerant from the air conditioner is completed.
Further alternatively, in combination with the flowchart of fig. 5, step S7 includes steps S71 to S74, wherein:
s71, calculating a second ratio of a second difference value to a power predicted value of the standard refrigerant state compressor;
S72, when the second ratio is greater than or equal to a fourth threshold, the refrigerant pressure release valve is opened, the discharge rate is a third preset rate, and the discharge duration is a third preset duration;
s73, when the second ratio is larger than or equal to a fifth threshold value and smaller than a fourth threshold value, the refrigerant pressure release valve is opened, the discharge rate is a fourth preset rate, and the discharge duration is a fourth preset duration;
S74, when the second ratio is smaller than or equal to a sixth threshold value, the refrigerant relief valve is closed, and the discharge of the refrigerant from the air conditioner is stopped;
Wherein the fifth threshold is greater than the sixth threshold.
In a specific embodiment, the fourth threshold is 20%, the fifth threshold is 10%, and the sixth threshold is 5%.
Further optionally, the third preset rate has a value ranging from: the value range of the fourth preset speed is that the speed is more than or equal to 7g/min and less than or equal to 12 g/min: greater than 0g/min and less than or equal to 10g/min.
Specifically, the third preset rate may be 7g/min, 8g/min, 10g/min, 12g/min, preferably the third preset rate is 10g/min. The fourth preset rate may be 2g/min, 4g/min, 5g/min, 7g/min, 10g/min, preferably the fourth preset rate is 5g/min.
Further optionally, the detection method further includes calculating a refrigerant discharge amount according to the following calculation formula:
ΣG Drawing and discharging amount ＝V3·T3+V4·T4；
Wherein V 3 is a third preset rate, V 4 is a fourth preset rate, T 1 is a third preset duration, and T 2 is a fourth preset duration.
Specifically, when (P Compressor actual power -P′ Predicting compressor power )/P′ Predicting compressor power is more than or equal to 20 percent, the refrigerant pressure release valve is opened, the refrigerant is discharged from the air conditioner to the refrigerant collecting device at the speed of V 3 g/min, the value range of V 3 is 7-12, the preferred value is 10, and the accumulated pressure release time is recorded as T 3;
When the pressure of P Compressor actual power -P′ Predicting compressor power )/P′ Predicting compressor power is more than or equal to 10 percent, a refrigerant pressure release valve is opened, the refrigerant is discharged from the air conditioner to the refrigerant collecting device at the speed of V 4 g/min, the value range of V 4 is 0-10, the optimal value is 5, and the accumulated pressure release time is recorded as T 4;
when (P Compressor actual power -P′ Predicting compressor power )/P′ Predicting compressor power % or less), the refrigerant relief valve is closed to stop discharging the refrigerant from the air conditioner.
Fig. 6 is a schematic block diagram of an air conditioner coolant amount detection system 600 according to an embodiment of the present invention. Referring to fig. 6, the detection system 600 includes:
The data acquisition module 602 is configured to acquire values of a plurality of operation parameters of the air conditioner when the air conditioner is operating in the fluorine deficiency detection mode, where the plurality of operation parameters include actual power of the compressor;
The compressor power prediction module 604 is configured to input values of parameters other than the actual power of the compressor in the plurality of operation parameters into a standard refrigerant state compressor power prediction model to obtain a standard refrigerant state compressor power prediction value, where the standard refrigerant state compressor power prediction value is a compressor power prediction value of an air conditioner running in a current operation state under a condition that a refrigerant amount is a rated refrigerant amount;
The refrigerant charge control module 606 is configured to determine a refrigerant quantity of the air conditioner according to the standard refrigerant state compressor power prediction value and the actual compressor power value.
Further alternatively, the data acquisition module 602 is specifically configured to store the acquired operating parameters T Outer tube temperature 、T External ring temperature 、T inner tube temperature 、T Inner ring temperature 、I External machine AC Electric current 、I compressor phase current and P Compressor actual power in the data processing module 608 at intervals of T 1, where T 1 is preferably 5s, and the total acquisition time period T 2 is preferably 5min, and T 2 is preferably 5min.
Still further alternatively, referring to fig. 6, the detection system 600 further includes: a data processing module 608.
The data acquisition module 602 stores the acquired operation parameters T Outer tube temperature 、T External ring temperature 、T inner tube temperature 、T Inner ring temperature 、I External machine AC Electric current 、I compressor phase current and P Compressor actual power in the data processing module 608 at a time interval of T 1, where T 1 is preferably 5s, and the total acquisition time period T 2 is preferably 5min, and T 2 is preferably 5min;
t Outer tube temperature is stored in the data processing module 608 as:
t External ring temperature is stored in the data processing module 608 as:
t inner tube temperature is stored in the data processing module 608 as:
t Inner ring temperature is stored in the data processing module 608 as:
i External machine AC Electric current is stored in the data processing module 608 as:
i compressor phase current is stored in the data processing module 608 as:
p Compressor actual power is stored in the data processing module 608 as:
wherein n is the acquisition times,
The compressor power prediction module 604 calculates values of a plurality of operating parameters by using a standard refrigerant state compressor power prediction model to obtain a standard refrigerant state compressor power prediction value, and specifically adopts the following standard refrigerant state compressor power prediction equation:
P' Predicting compressor power ＝AT Outer tube temperature +BT External ring temperature +CT inner tube temperature +DT Inner ring temperature +EI External machine AC Electric current +FI compressor phase current ；
The data processing module 608 sends the processed T Outer tube temperature 、T External ring temperature 、T inner tube temperature 、T Inner ring temperature 、I External machine AC Electric current and I compressor phase current to a standard refrigerant state compressor power prediction model, and the program calculates and obtains P' Predicting compressor power values according to the equation;
The calculated P' Predicting compressor power represents the predicted value of P Standard state compressor power when the air conditioner is operating in the standard refrigerant state and the system parameters are T Outer tube temperature 、T External ring temperature 、T inner tube temperature 、T Inner ring temperature 、I External machine AC Electric current and I compressor phase current sent by the current data processing module 608.
The refrigerant charging control module 606 compares P' Predicting compressor power calculated according to the standard refrigerant state compressor power prediction model with P Compressor actual power to control a refrigerant charging valve and a refrigerant pressure release valve;
when the refrigerant quantity is P Compressor actual power ＜P′ Predicting compressor power , the shortage of the refrigerant quantity is indicated;
when the refrigerant quantity is P Compressor actual power ＝P′ Predicting compressor power , the refrigerant quantity is indicated to be proper;
And when the refrigerant quantity is P Compressor actual power ＞P′ Predicting compressor power , the excess refrigerant quantity is indicated.
Further alternatively, referring to fig. 8, the refrigerant filling control module 606 is configured to control a refrigerant filling valve and a refrigerant pressure relief valve, where the refrigerant filling valve is opened and closed to complete refrigerant filling of the air conditioner, and the refrigerant pressure relief valve is opened and closed to complete refrigerant discharging of the air conditioner.
Further optionally, the refrigerant charging control module 606 is configured to detect a charging amount of the refrigerant and a charging control strategy during the process of charging the refrigerant. Specifically, the control strategy is:
When the pressure of P actual power value of compressor -P′ Predicting compressor power )/P′ Predicting compressor power is less than or equal to-20%, the refrigerant filling valve is opened, the air conditioner is filled with the refrigerant at the speed of V 1 g/min, the value range of V 1 is 15-30, the optimal value is 20, and the accumulated filling time is recorded as T 1;
When the (P Compressor actual power -P′ Predicting compressor power )/P′ Predicting compressor power is more than or equal to-10 percent), the refrigerant filling valve is opened, the air conditioner is filled with the refrigerant at the speed of V 2 g/min, the value range of V 2 is 5-15, the optimal value is 10, and the accumulated filling time is recorded as T 2;
When the (P Compressor actual power -P′ Predicting compressor power )/P′ Predicting compressor power is more than or equal to-5 percent), the refrigerant filling valve is closed, and the refrigerant filling into the air conditioner is stopped;
When the pressure of P Compressor actual power -P′ Predicting compressor power )/P′ Predicting compressor power is more than or equal to 20 percent, a refrigerant pressure release valve is opened, the refrigerant is discharged from the air conditioner to the refrigerant collecting device at the speed of V 3 g/min, the value range of V 3 is 7-12, the preferred value is 10, and the accumulated pressure release time is recorded as T 3;
When the pressure of P Compressor actual power -P′ Predicting compressor power )/P′ Predicting compressor power is more than or equal to 10 percent, a refrigerant pressure release valve is opened, the refrigerant is discharged from the air conditioner to the refrigerant collecting device at the speed of V 4 g/min, the value range of V 4 is 0-10, the optimal value is 5, and the accumulated pressure release time is recorded as T 4;
when (P Compressor actual power -P′ Predicting compressor power )/P′ Predicting compressor power % or less), the refrigerant relief valve is closed to stop discharging the refrigerant from the air conditioner.
Further, the detected filling amount of the refrigerant is:
∑G Filling quantity ＝V1·T1+V2·T2；
in addition, the amount of refrigerant drawn out through the refrigerant pressure release valve can also be detected:
∑G Drawing and discharging amount ＝V3·T3+V4·T4。
The present embodiment also provides an air conditioner coolant amount detection system, which includes one or more processors and a non-transitory computer readable storage medium storing program instructions, where the one or more processors are configured to implement the method of any one of the preceding claims when the one or more processors execute the program instructions.
The embodiment also provides a detection device, which adopts the method of any one of the previous claims, or a system comprising any one of the previous claims.
Any one of the methods or the systems in the embodiments relates to a data acquisition module, a data processing module, a compressor power prediction module (a standard refrigerant state compressor power prediction model) and a refrigerant filling control module, wherein the functional modules are integrated in a detector for detection personnel to use; the detector is connected with the external machine terminal of the air conditioner by the detector, and then the air conditioner is started to operate.
The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
From the above description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course may be implemented by means of hardware. Based on this understanding, the foregoing technical solution may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method described in the respective embodiments or some parts of the embodiments.
The foregoing description is only illustrative of the preferred embodiment of the present invention, and is not to be construed as limiting the invention, but is to be construed as limiting the invention to any and all simple modifications, equivalent variations and adaptations of the embodiments described above, which are within the scope of the invention, may be made by those skilled in the art without departing from the scope of the invention.

Claims (15)

1. The method for detecting the refrigerant quantity of the air conditioner is characterized by comprising the following steps of:
When the air conditioner operates in a fluorine deficiency detection mode, acquiring values of a plurality of operation parameters of the air conditioner, wherein the operation parameters comprise actual power of a compressor;
Inputting the values of parameters except the actual power of the compressor in the plurality of operation parameters into a standard refrigerant state compressor power prediction model to obtain a standard refrigerant state compressor power prediction value, wherein the standard refrigerant state compressor power prediction value is a compressor power prediction value of the air conditioner running in the current operation state under the condition that the refrigerant quantity is the rated refrigerant quantity;
judging the refrigerant quantity condition of the air conditioner according to the standard refrigerant state compressor power predicted value and the compressor actual power value;
The method comprises the steps that a plurality of operation parameters of the air conditioner are set so that the air conditioner can operate in the fluorine deficiency detection mode, the plurality of operation parameters of the air conditioner comprise compressor frequency, and when the air conditioner operates in the fluorine deficiency detection mode, the compressor is operated according to a target frequency value, and the range of the target frequency value is 10 Hz-90 Hz.
2. The method of claim 1, wherein the obtaining values of a plurality of operation parameters of the air conditioner comprises:
acquiring the value of each operation parameter according to a preset time interval within a preset time length to obtain a plurality of values of each operation parameter;
determining the acquisition times, and summing a plurality of values of each operation parameter to obtain a sum value of each operation parameter;
and calculating the average value of each operation parameter in the preset duration according to the sum value of each operation parameter and the acquisition times, and taking the average value of each operation parameter as the value of each operation parameter.
3. The method for detecting the refrigerant quantity of an air conditioner according to claim 2, wherein,
The value range of the preset duration is as follows: more than or equal to 3min and less than or equal to 5min;
The value range of the preset time interval is as follows: greater than or equal to 3s and less than or equal to 5s.
4. The method for detecting the refrigerant quantity of an air conditioner according to claim 1, wherein,
The plurality of operating parameters includes: outdoor environment temperature, outdoor heat exchanger tube temperature, indoor environment temperature, indoor heat exchanger tube temperature, outdoor unit alternating current, compressor phase current and the compressor actual power.
5. The method as set forth in claim 4, wherein said standard refrigerant state compressor power prediction model uses the following formula:
；
Wherein, And A, B, C, D, E, F is a coefficient for the predicted value of the power of the standard refrigerant state compressor,For the outdoor ambient temperature,/>For the outdoor heat exchanger tube temperature,/>For the indoor environment temperature andFor the tube temperature of the indoor heat exchanger,/>Alternating current for the outdoor unit,/>For the compressor phase current.
6. The method for detecting the refrigerant quantity of an air conditioner according to any one of claims 1 to 5, wherein the judging the refrigerant quantity of the air conditioner according to the standard refrigerant state compressor power predicted value and the compressor actual power comprises:
When the actual power value of the compressor is smaller than the predicted power value of the standard refrigerant state compressor, judging that the refrigerant quantity is insufficient;
when the actual power value of the compressor is equal to the predicted power value of the standard refrigerant state compressor, judging that the refrigerant quantity is proper;
And when the actual power value of the compressor is larger than the predicted power value of the standard refrigerant state compressor, judging that the refrigerant quantity is excessive.
7. The method for detecting the refrigerant quantity of an air conditioner according to claim 6, further comprising:
when the refrigerant quantity is judged to be insufficient, monitoring a first difference value between the actual power value of the compressor and the predicted power value of the standard refrigerant state compressor;
And controlling the opening and closing of the refrigerant filling valve according to the first difference value, and controlling the filling rate and the filling time of the refrigerant under the condition that the refrigerant filling valve is opened.
8. The method as set forth in claim 7, wherein said controlling the opening and closing of the refrigerant charging valve according to the first difference value, and controlling the charging rate and the charging duration of the refrigerant when the refrigerant charging valve is opened, includes:
Calculating a first ratio of the first difference to the power predicted value of the standard refrigerant state compressor;
when the first ratio is smaller than or equal to a first threshold value, the refrigerant filling valve is opened, the filling rate is a first preset rate, and the filling duration is a first preset duration;
When the first ratio is greater than or equal to a second threshold and less than a third threshold, the refrigerant filling valve is opened, the filling rate is a second preset rate, and the filling time is a second preset time;
When the first ratio is greater than or equal to the third threshold, the refrigerant charging valve is closed, and the refrigerant charging to the air conditioner is stopped;
wherein the first threshold is less than the second threshold,
The value range of the first preset rate is as follows: greater than or equal to 15 g/min and less than or equal to 30 g/min,
The value range of the second preset rate is as follows: greater than or equal to 5g and less than or equal to 15g/min.
9. The method of claim 8, further comprising calculating a refrigerant charge according to the following calculation formula:
；
wherein V 1 is the first preset rate, V 2 is the second preset rate, T 1 is the first preset duration, and T 2 is the second preset duration.
10. The method for detecting the refrigerant quantity of an air conditioner according to claim 6, further comprising:
when the refrigerant quantity is judged to be excessive, monitoring a second difference value between the actual power value of the compressor and the power predicted value of the standard refrigerant state compressor;
and controlling the opening and closing of the refrigerant pressure relief valve according to the second difference value, and controlling the discharge rate and the discharge duration of the refrigerant under the condition that the refrigerant pressure relief valve is opened.
11. The method as set forth in claim 10, wherein said controlling the opening and closing of the refrigerant relief valve according to the second difference value, and controlling the discharge rate and the discharge duration of the refrigerant when the refrigerant relief valve is opened, includes:
calculating a second ratio of the second difference to the standard refrigerant state compressor power predicted value;
When the second ratio is greater than or equal to a fourth threshold, the refrigerant pressure release valve is opened, the discharge rate is a third preset rate, and the discharge duration is a third preset duration;
When the second ratio is greater than or equal to a fifth threshold value and less than the fourth threshold value, the refrigerant pressure release valve is opened, the discharge rate is a fourth preset rate, and the discharge duration is a fourth preset duration;
When the second ratio is smaller than or equal to a sixth threshold value, the refrigerant pressure release valve is closed, and the refrigerant is stopped being discharged from the air conditioner;
wherein the fifth threshold is greater than the sixth threshold,
The value range of the third preset rate is as follows: greater than or equal to 7g/min and less than or equal to 12g/min,
The value range of the fourth preset rate is as follows: greater than 0g/min and less than or equal to 10g/min.
12. The method of claim 11, further comprising calculating a refrigerant discharge amount according to the following calculation formula:
；
Wherein V 3 is the third preset rate, V 4 is the fourth preset rate, T 3 is the third preset duration, and T 4 is the fourth preset duration.
13. An air conditioner refrigerant quantity detection system, characterized by comprising:
The data acquisition module is used for acquiring values of a plurality of operation parameters of the air conditioner in a fluorine deficiency detection mode, wherein the operation parameters comprise actual power of a compressor;
The compressor power prediction module is used for inputting the values of parameters except the actual power of the compressor in the plurality of operation parameters into a standard refrigerant state compressor power prediction model to obtain a standard refrigerant state compressor power prediction value, wherein the standard refrigerant state compressor power prediction value is a compressor power prediction value of the air conditioner running in the current operation state under the condition that the refrigerant quantity is the rated refrigerant quantity;
The compressor actual power value refrigerant filling control module is used for judging the refrigerant quantity condition of the air conditioner according to the standard refrigerant state compressor power predicted value and the compressor actual power value;
The method comprises the steps that a plurality of operation parameters of the air conditioner are set so that the air conditioner can operate in the fluorine deficiency detection mode, the plurality of operation parameters of the air conditioner comprise compressor frequency, and when the air conditioner operates in the fluorine deficiency detection mode, the compressor is operated according to a target frequency value, and the range of the target frequency value is 10 Hz-90 Hz.
14. An air conditioner refrigerant charge detection system comprising one or more processors and a non-transitory computer readable storage medium storing program instructions which, when executed by the one or more processors, are operable to implement the method of any one of claims 1-12.
15. A detection device, characterized in that it employs the method of any one of claims 1-12, or comprises the system of claim 13, or comprises the system of claim 14.
CN202210719208.3A 2022-06-23 2022-06-23 Air conditioner refrigerant detection method, system and detection equipment Active CN115200161B (en)

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CN109028459A (en) * 2018-09-11 2018-12-18 海信（山东）空调有限公司 Air-conditioner control method and air conditioner
CN110836519A (en) * 2018-08-16 2020-02-25 奥克斯空调股份有限公司 Air conditioner refrigerant leakage detection method and detection system
CN113074432A (en) * 2021-04-28 2021-07-06 珠海格力电器股份有限公司 Air conditioner refrigerant quantity adjusting method and device and air conditioning system

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104315666A (en) * 2014-10-30 2015-01-28 广东美的制冷设备有限公司 Air conditioner and coolant leakage warning method for air conditioner
CN110836519A (en) * 2018-08-16 2020-02-25 奥克斯空调股份有限公司 Air conditioner refrigerant leakage detection method and detection system
CN109028459A (en) * 2018-09-11 2018-12-18 海信（山东）空调有限公司 Air-conditioner control method and air conditioner
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