CN114508827A - Air conditioner refrigerant detection method and device and air conditioner - Google Patents
Air conditioner refrigerant detection method and device and air conditioner Download PDFInfo
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- 239000003507 refrigerant Substances 0.000 title claims abstract description 152
- 238000001514 detection method Methods 0.000 title claims description 45
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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
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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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
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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
- F24F11/62—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
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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
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Abstract
The invention discloses a method and a device for detecting a refrigerant of an air conditioner and the air conditioner, wherein the method comprises the following steps: when the air conditioner runs, acquiring the current running frequency of the compressor, the current vibration frequency of an air inlet pipe connected with an air inlet of the compressor and the current vibration frequency of an exhaust pipe connected with an exhaust port of the compressor in real time; acquiring a current first difference value between the current operation frequency and the current vibration frequency of the air inlet pipe, and acquiring a current second difference value between the current operation frequency and the current vibration frequency of the exhaust pipe; and when the current first difference value is larger than the current first difference value threshold value and the current second difference value is larger than the current second difference value threshold value, judging that the refrigerant leakage occurs. The invention can improve the speed and accuracy of detecting the air conditioner refrigerant.
Description
Technical Field
The invention belongs to the technical field of air conditioning, and particularly relates to a method and a device for detecting a refrigerant of an air conditioner and the air conditioner.
Background
The air conditioner is often subject to a refrigerant leakage problem during the operation of the air conditioner due to irregular installation or after a long time use. Once the refrigerant leaks, the refrigerant directly affects the cooling and heating effects of the air conditioner, and even damages the components of the air conditioner when the refrigerant is serious.
In the prior art, parameters such as the working current of an air conditioner unit, the exhaust temperature of a compressor, the suction temperature of the compressor, the temperature of coils of an internal machine and an external machine or the superheat degree of the unit are generally adopted to judge whether the refrigerant leakage occurs. Since it takes a long time for these parameters to change after the refrigerant leaks, the speed of detecting the refrigerant using these parameters is slow and the leakage of the refrigerant cannot be detected in time. In addition, when the air conditioner is operated, the parameters are influenced by various factors to change, so that the accuracy of detecting whether the refrigerant leaks or not based on the parameters is low, and misjudgment is easy to occur.
In view of this, a technical solution for improving the speed and accuracy of refrigerant detection is needed.
Disclosure of Invention
The invention aims to provide a method and a device for detecting a refrigerant of an air conditioner, which can improve the speed and the accuracy of refrigerant detection.
In order to achieve the purpose, the method for detecting the air conditioner refrigerant provided by the invention is realized by adopting the following technical scheme:
an air conditioner refrigerant detection method, the method comprising:
when the air conditioner runs, acquiring the current running frequency of the compressor, the current vibration frequency of an air inlet pipe connected with an air inlet of the compressor and the current vibration frequency of an exhaust pipe connected with an exhaust port of the compressor in real time;
acquiring a current first difference value between the current operation frequency and the current vibration frequency of the air inlet pipe, and acquiring a current second difference value between the current operation frequency and the current vibration frequency of the exhaust pipe;
when the current first difference value is larger than the current first difference value threshold value and the current second difference value is larger than the current second difference value threshold value, judging that refrigerant leakage occurs;
the current first difference threshold and the current second difference threshold are both known values.
In one preferred embodiment, the method further comprises:
determining an actual amount of refrigerant of the air conditioner based on the current first difference and the current second difference after it is determined that the refrigerant leakage occurs.
In one preferred embodiment, the determining the actual refrigerant quantity of the air conditioner based on the current first difference and the current second difference specifically includes:
calculating a current first difference between the current first difference and the current first difference threshold and a current second difference between the current second difference and the current second difference threshold, respectively;
determining a difference range of the current difference value to which the difference between the current first difference value and the current second difference value belongs;
and determining the current refrigerant quantity matched with the difference of the current difference according to the matching relation between the known difference range and the refrigerant quantity, and determining the current refrigerant quantity as the actual refrigerant quantity.
In one preferred embodiment, the current first difference threshold and the current second difference threshold are determined by the following method:
determining a frequency range to which the current operating frequency belongs;
and determining the current first difference threshold and the current second difference threshold which are matched with the current operating frequency according to the matching relation between the known frequency range and the difference threshold.
In one preferred embodiment, the method further comprises:
and when the refrigerant leakage is judged to occur, giving an alarm prompt.
In order to achieve the purpose, the air conditioner refrigerant detection device provided by the invention adopts the following technical scheme:
an air conditioner refrigerant detection device, the device comprising:
the current operating frequency acquisition unit is used for acquiring the current operating frequency of the compressor in real time when the air conditioner operates;
the current air inlet pipe vibration frequency acquisition unit is used for acquiring the current air inlet pipe vibration frequency of an air inlet pipe connected with an air inlet of the compressor in real time when the air conditioner operates;
the current exhaust pipe vibration frequency acquisition unit is used for acquiring the current exhaust pipe vibration frequency of an exhaust pipe connected with an exhaust port of the compressor in real time when the air conditioner operates;
a current first difference obtaining unit, configured to obtain a current first difference between the current operating frequency and the current intake pipe vibration frequency;
a current second difference acquisition unit, configured to acquire a current second difference between the current operating frequency and the current exhaust pipe vibration frequency;
a result determination unit for determining that refrigerant leakage occurs when the current first difference is greater than a current first difference threshold and the current second difference is greater than a current second difference threshold are satisfied;
the current first difference threshold and the current second difference threshold are both known values.
In one preferred embodiment, the apparatus further comprises:
an actual refrigerant amount determining unit for determining an actual refrigerant amount of the air conditioner based on the current first difference and the current second difference after the result determining unit determines that the refrigerant leakage occurs.
In one preferred embodiment, the apparatus further comprises:
and the alarm unit is used for giving an alarm prompt when the result determining unit determines that the refrigerant leakage occurs.
The invention further aims to provide an air conditioner which comprises a compressor and the air conditioner also comprises the air conditioner refrigerant detection device.
Still another object of the present invention is to provide an electronic device, which includes a processor, a memory and a computer program stored in the memory, wherein the processor is configured to execute the computer program, and implement the air conditioner refrigerant detection method.
Compared with the prior art, the invention has the advantages and positive effects that:
the invention provides a method and a device for detecting a refrigerant of an air conditioner, which utilize the running frequency of a compressor, the vibration frequency of an air inlet pipe and the vibration frequency of an exhaust pipe as judgment parameters, execute refrigerant detection based on the difference value of the running frequency and the two vibration frequencies, and judge that the refrigerant leaks when the difference value exceeds a certain difference threshold value; because the refrigerants are concentrated in the compressor and pass through the air inlet pipeline and the air outlet pipeline of the compressor in a cycle period, and different pipeline vibration frequencies are generated due to different refrigerant amounts in the air inlet pipeline and the air outlet pipeline, after the refrigerant of the air conditioner leaks to cause the change of the refrigerant amount, the change can be quickly reflected by the vibration frequencies of the air inlet pipeline and the air suction pipeline of the compressor; moreover, after the air conditioner is installed in place, the main influencing factors of the vibration of the air inlet pipeline and the air outlet pipeline are the self running frequency of the compressor and the quantity of the refrigerant passing through the pipelines; therefore, the operating frequency of the compressor, the vibration frequency of the air inlet pipe and the vibration frequency of the exhaust pipe are used as refrigerant judgment parameters, so that the change of the refrigerant can be quickly tracked, the rapidity of refrigerant detection is improved, the interference of other factors can be eliminated, the accuracy of refrigerant detection is improved, and the influence on the service performance and the safety performance of the air conditioner caused by misjudgment of refrigerant leakage is avoided.
Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when taken in conjunction with the accompanying drawings.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic flow chart illustrating an embodiment of a method for detecting refrigerant in an air conditioner according to the present invention;
FIG. 2 is a schematic flow chart illustrating a method for detecting the refrigerant in the air conditioner according to another embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an embodiment of a refrigerant detection device of an air conditioner according to the present invention;
FIG. 4 is a schematic structural diagram of another embodiment of the refrigerant detection device of the air conditioner of the present invention;
fig. 5 is a schematic structural diagram of an embodiment of an electronic device according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and examples.
It should be noted that the technical solutions in the embodiments of the present invention may be combined with each other, but must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the protection scope of the present invention.
Embodiments described below provide an air conditioner that performs a cooling and heating cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator. The cooling and heating cycle includes a series of processes involving compression, condensation, expansion, and evaporation to cool or heat an indoor space.
The refrigeration working principle of the air conditioner is as follows: the compressor works to make the interior of the indoor heat exchanger (in the indoor machine, the evaporator at this time) be in an ultralow pressure state, the liquid refrigerant in the indoor heat exchanger is quickly evaporated to absorb heat, and the air blown out by the indoor fan is cooled by the coil pipe of the indoor heat exchanger and then changed into cold air to be blown into the room. The evaporated and gasified refrigerant is pressurized by the compressor, condensed into a liquid state in a high-pressure environment in an outdoor heat exchanger (in an outdoor unit, a condenser at the moment), releases heat, and is dissipated to the atmosphere through an outdoor fan, so that the refrigeration effect is achieved by circulation.
The heating working principle of the air conditioner is as follows: the gaseous refrigerant is pressurized by the compressor to become high-temperature and high-pressure gas, and the high-temperature and high-pressure gas enters the indoor heat exchanger (the condenser at this time), is condensed, liquefied and released heat to become liquid, and simultaneously heats indoor air, thereby achieving the purpose of increasing the indoor temperature. The liquid refrigerant is decompressed by the throttling device, enters an outdoor heat exchanger (an evaporator at the moment), is evaporated, gasified and absorbs heat to form gas, absorbs heat of outdoor air (the outdoor air becomes cooler) to form gaseous refrigerant, and enters the compressor again to start the next cycle.
In order to solve the technical problems of low speed and low precision of air conditioner refrigerant detection in the prior art, the invention creatively provides a method for detecting the refrigerant by using the operating frequency of the compressor, the vibration frequency of the air inlet pipe and the vibration frequency of the air outlet pipe as judgment parameters, thereby achieving the technical purposes of improving the rapidity of refrigerant detection, eliminating the interference of other factors and improving the accuracy of refrigerant detection. More specific implementation of the technical means and the technical effects thereof are described in the following embodiments.
Fig. 1 is a flow chart illustrating an embodiment of a method for detecting refrigerant in an air conditioner according to the present invention.
As shown in fig. 1, this embodiment detects the air conditioner refrigerant using the following process.
Step 101: when the air conditioner runs, the current running frequency of the compressor, the current air inlet pipe vibration frequency and the current exhaust pipe vibration frequency are obtained in real time.
The current operating frequency of the compressor is the operating frequency of the compressor which is obtained in real time according to the set sampling frequency when the air conditioner operates. The operating frequency of the compressor is controlled by the air conditioner controller, so that the current operating frequency can be conveniently known by the controller.
When the vibration frequency of the front air inlet pipe is the vibration frequency of the air inlet pipe connected with the air inlet of the compressor, which is acquired in real time according to the set sampling frequency when the air conditioner runs, the vibration frequency can be acquired through a vibration monitoring device arranged on the air inlet pipe.
When the vibration frequency of the front exhaust pipe is the vibration frequency of the exhaust pipe connected with the exhaust port of the compressor, which is obtained in real time according to the set sampling frequency when the air conditioner runs, the vibration frequency can be obtained through a vibration monitoring device arranged on the exhaust pipe.
Step 102: and acquiring a current first difference value between the current operation frequency and the current vibration frequency of the air inlet pipe and a current second difference value between the current operation frequency and the current vibration frequency of the exhaust pipe.
Step 103: and when the current first difference value is larger than the current first difference value threshold value and the current second difference value is larger than the current second difference value threshold value, judging that the refrigerant leakage occurs.
And the current first difference threshold and the current second difference threshold are both known values. Specifically, the two thresholds are determined by research and development personnel through comprehensive means such as theoretical analysis, experimental simulation, prototype test and the like before the air conditioner leaves a factory, and are critical values which reflect the vibration frequency of the air inlet pipe and the vibration frequency of the exhaust pipe when the refrigerant quantity of the air conditioner is in a normal state and the compressor is at a certain operating frequency.
If the current first difference is larger than the current first difference threshold value and the current second difference is larger than the current second difference threshold value, the vibration frequency of the air inlet pipe and the vibration frequency of the exhaust pipe both exceed the critical frequency value when the refrigerant quantity is normal, and the vibration frequencies of the air inlet pipe and the exhaust pipe are increased due to the fact that the suction quantity and the exhaust quantity are reduced due to the reduction of the refrigerant quantity. In this case, it is determined that the refrigerant leakage has occurred.
In this embodiment, refrigerant detection is performed based on the difference between the operating frequency and the two vibration frequencies using the operating frequency of the compressor, the intake pipe vibration frequency, and the exhaust pipe vibration frequency as determination parameters, and it is determined that refrigerant leakage has occurred when the difference exceeds a certain difference threshold. Because the refrigerants are concentrated in the compressor and pass through the air inlet pipeline and the air outlet pipeline of the compressor in a cycle period, and different pipeline vibration frequencies are generated due to different refrigerant amounts in the air inlet pipeline and the air outlet pipeline, after the refrigerant of the air conditioner leaks to cause the change of the refrigerant amount, the change can be quickly reflected by the vibration frequencies of the air inlet pipeline and the air suction pipeline of the compressor; moreover, after the air conditioner is installed in place, the main influencing factors of the vibration of the air inlet pipeline and the air outlet pipeline are the self running frequency of the compressor and the quantity of the refrigerant passing through the pipelines; therefore, the operating frequency of the compressor, the vibration frequency of the air inlet pipe and the vibration frequency of the exhaust pipe are used as refrigerant judgment parameters, so that the change of the refrigerant can be quickly tracked, the rapidity of refrigerant detection is improved, the interference of other factors can be eliminated, the accuracy of refrigerant detection is improved, and the influence on the service performance and the safety performance of the air conditioner due to misjudgment of refrigerant leakage is avoided. In addition, the judgment is carried out based on the vibration frequency of the air suction pipe and the vibration frequency of the exhaust pipe, so that the judgment error easily caused by adopting single frequency judgment is avoided, and the judgment accuracy is further ensured.
Fig. 2 is a flow chart illustrating a refrigerant detection method of an air conditioner according to another embodiment of the present invention.
As shown in fig. 2, this embodiment detects the air conditioner refrigerant using the following process.
Step 201: when the air conditioner runs, the current running frequency of the compressor, the current vibration frequency of the current air inlet pipe, the current vibration frequency of the exhaust pipe, the current first difference threshold value and the current second difference threshold value are obtained in real time.
The current operating frequency of the compressor is the operating frequency of the compressor which is obtained in real time according to the set sampling frequency when the air conditioner operates. The operating frequency of the compressor is controlled by the air conditioner controller, so that the current operating frequency can be conveniently known by the controller.
When the vibration frequency of the front air inlet pipe is the vibration frequency of the air inlet pipe connected with the air inlet of the compressor, which is acquired in real time according to the set sampling frequency when the air conditioner runs, the vibration frequency can be acquired through a vibration monitoring device arranged on the air inlet pipe.
When the vibration frequency of the front exhaust pipe is the vibration frequency of the exhaust pipe connected with the exhaust port of the compressor, which is obtained in real time according to the set sampling frequency when the air conditioner runs, the vibration frequency can be obtained through a vibration monitoring device arranged on the exhaust pipe.
The current first difference threshold and the current second difference threshold are known values and are determined by the following method:
determining a frequency range to which the current operating frequency belongs;
and determining a current first difference threshold value and a current second difference threshold value which are matched with the current running frequency according to the matching relation between the known frequency range and the difference threshold value.
The matching relation between the frequency range and the difference threshold is obtained before the air conditioner leaves a factory and is preset in the air conditioner. By adopting the method, the first difference threshold value and the second difference threshold value which are matched can be dynamically selected based on the real-time running frequency of the compressor, and compared with the method adopting the fixed and unchangeable difference threshold value, the precision of refrigerant detection can be further improved.
Step 202: and acquiring a current first difference value between the current operation frequency and the current vibration frequency of the air inlet pipe and a current second difference value between the current operation frequency and the current vibration frequency of the exhaust pipe.
Step 203: and when the current first difference value is larger than the current first difference value threshold value and the current second difference value is larger than the current second difference value threshold value, judging that the refrigerant leakage occurs.
If the current first difference is larger than the current first difference threshold value and the current second difference is larger than the current second difference threshold value, the vibration frequency of the air inlet pipe and the vibration frequency of the exhaust pipe both exceed the critical frequency value when the refrigerant quantity is normal, and the vibration frequencies of the air inlet pipe and the exhaust pipe are increased due to the fact that the suction quantity and the exhaust quantity are reduced due to the reduction of the refrigerant quantity. In this case, it is determined that the refrigerant leakage has occurred.
Step 204: sending out alarm prompt and determining the actual refrigerant quantity of the air conditioner,
after the refrigerant leakage is judged to occur in step 203, an alarm prompt is sent out to prompt a user to carry out detection and maintenance, and meanwhile, the compressor of the air conditioner is stopped, so that the phenomenon that the refrigerant leakage is aggravated and more harm is generated due to the fact that the compressor continues to operate is reduced. Meanwhile, the actual amount of the refrigerant of the air conditioner is further determined so as to judge the leakage grade, and different treatments are executed according to the leakage grade. Specifically, the actual refrigerant quantity of the air conditioner is determined according to the current first difference and the current second difference, and the more specific determination method is the process of step 205.
Step 205: and calculating the difference between the current first difference value and the current first difference value threshold value and the difference between the current second difference value and the current second difference value threshold value, determining the difference range of the current difference values, and determining the actual refrigerant quantity.
The air conditioner is preset with the matching relation between the difference range of the difference value and the refrigerant quantity, and the matching relation is determined by research personnel through comprehensive means such as theoretical analysis, experimental simulation, prototype test and the like.
After the difference between the current first difference value and the difference between the current second difference value are obtained, the difference range of the current difference value to which the difference between the current first difference value and the current second difference value belongs is determined respectively. And then, according to the matching relation between the difference range of the difference values and the refrigerant quantity, determining the current refrigerant quantity matched with the difference range of the current difference values, wherein the current refrigerant quantity is the current actual refrigerant quantity of the air conditioner.
By adopting the method of the embodiment, the change of the refrigerant can be quickly tracked, the rapidity of refrigerant detection is improved, the interference of other factors can be eliminated, the accuracy of refrigerant detection is improved, and further the influence on the service performance and the safety performance of the air conditioner caused by misjudgment on the leakage of the refrigerant is avoided. In addition, the judgment is carried out based on the vibration frequency of the air suction pipe and the vibration frequency of the exhaust pipe, so that the judgment error easily caused by adopting single frequency judgment is avoided, and the judgment accuracy is further ensured. And moreover, the actual refrigerant quantity in the air conditioner after the refrigerant leakage occurs can be determined based on the operation frequency of the compressor, the vibration frequency of the air suction pipe and the vibration frequency of the exhaust pipe, so that the refrigerant condition can be conveniently known, the leakage grade can be conveniently judged, and different processing can be further executed according to the leakage grade.
Fig. 3 is a schematic structural diagram of an embodiment of the refrigerant detection device of the air conditioner of the present invention.
As shown in fig. 3, the detecting device of this embodiment includes the structural units, the functions of the structural units, and the connection relationship among them, which are described in detail as follows.
As shown in fig. 3, the detecting device includes:
a current operating frequency obtaining unit 31 for obtaining the current operating frequency of the compressor in real time when the air conditioner is in operation.
And a current intake pipe vibration frequency obtaining unit 32, configured to obtain, in real time, a current intake pipe vibration frequency of an intake pipe connected to an air inlet of the compressor when the air conditioner is in operation.
A current exhaust pipe vibration frequency obtaining unit 33 for obtaining the current exhaust pipe vibration frequency of the exhaust pipe connected to the exhaust port of the compressor in real time when the air conditioner is in operation.
A current first difference acquisition unit 34 configured to acquire a current first difference between the current operating frequency acquired by the current operating frequency acquisition unit 31 and the current intake pipe vibration frequency acquired by the current intake pipe vibration frequency acquisition unit 32.
A current second difference value obtaining unit 35, configured to obtain a current second difference value between the current operating frequency obtained by the current operating frequency obtaining unit 31 and the current exhaust pipe vibration frequency obtained by the current exhaust pipe vibration frequency obtaining unit 33.
A result determining unit 36, configured to perform a refrigerant determination according to the current first difference value obtained by the current first difference value obtaining unit 34 and the current second difference value obtained by the current second difference value obtaining unit 35, specifically, when the current first difference value is greater than the current first difference value threshold and the current second difference value is greater than the current second difference value threshold, it is determined that a refrigerant leakage occurs. The current first difference threshold and the current second difference threshold are both known values.
The control device with the structure runs a corresponding software program to execute corresponding functions, and detects the air conditioner refrigerant according to the process of the embodiment of the air conditioner refrigerant detection method and the preferred embodiment of the air conditioner refrigerant detection method in the figure 1, so that the technical effects corresponding to the embodiment and the preferred embodiment of the air conditioner refrigerant detection method in the figure 1 are achieved.
Fig. 4 is a schematic structural diagram of an embodiment of the refrigerant detection device of the air conditioner of the present invention.
As shown in fig. 4, the detecting device of this embodiment includes the structural units, the functions of the structural units, and the connection relationship among them, which are described in detail as follows.
As shown in fig. 4, the detection device includes:
a current operation frequency obtaining unit 41, configured to obtain the current operation frequency of the compressor in real time when the air conditioner is running.
And a current intake pipe vibration frequency obtaining unit 42 configured to obtain a current intake pipe vibration frequency of an intake pipe connected to an air inlet of the compressor in real time when the air conditioner is in operation.
And a current exhaust pipe vibration frequency obtaining unit 43 for obtaining the current exhaust pipe vibration frequency of the exhaust pipe connected to the exhaust port of the compressor in real time when the air conditioner is in operation.
A current first difference value acquisition unit 44 for acquiring a current first difference value between the current operating frequency acquired by the current operating frequency acquisition unit 41 and the current intake pipe vibration frequency acquired by the current intake pipe vibration frequency acquisition unit 42.
A current second difference value obtaining unit 45, configured to obtain a current second difference value between the current operating frequency obtained by the current operating frequency obtaining unit 41 and the current exhaust pipe vibration frequency obtained by the current exhaust pipe vibration frequency obtaining unit 43.
A result determining unit 46, configured to perform a refrigerant determination according to the current first difference value obtained by the current first difference value obtaining unit 44 and the current second difference value obtained by the current second difference value obtaining unit 45, specifically, when the current first difference value is greater than the current first difference value threshold and the current second difference value is greater than the current second difference value threshold, it is determined that a refrigerant leakage occurs.
And an alarm unit 47 for giving an alarm prompt when the result determination unit 46 determines that the refrigerant leakage occurs.
And an actual refrigerant amount determining unit 48 for determining an actual refrigerant amount of the air conditioner based on the current first difference and the current second difference after the result determining unit 46 determines that the refrigerant leakage occurs.
The control device with the structure runs corresponding software programs to execute corresponding functions, and detects the air conditioner refrigerant according to the process of the embodiment of the air conditioner refrigerant detection method and the preferred embodiment of the air conditioner refrigerant detection method in the figure 2, so that the technical effects corresponding to the embodiment and the preferred embodiment of the figure 2 are achieved.
The air conditioner refrigerant detection device of each embodiment is applied to the air conditioner, and can improve the speed and the accuracy of air conditioner refrigerant detection.
Fig. 5 shows a block diagram of an embodiment of the electronic device of the present invention. The electronic device comprises a processor 51, a memory 52 and a computer program 521 stored on the memory 52, wherein the processor 51 is configured to execute the computer program 521, so as to realize the air conditioner refrigerant detection methods of the embodiment in fig. 1, the embodiment in fig. 2 and other preferred embodiments, and realize the technical effects of the corresponding embodiments. The electronic equipment can be a main control board, a controller and the like of the air conditioner.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (10)
1. An air conditioner refrigerant detection method, characterized in that the method comprises:
when the air conditioner runs, acquiring the current running frequency of the compressor, the current vibration frequency of an air inlet pipe connected with an air inlet of the compressor and the current vibration frequency of an exhaust pipe connected with an exhaust port of the compressor in real time;
acquiring a current first difference value between the current operation frequency and the current vibration frequency of the air inlet pipe, and acquiring a current second difference value between the current operation frequency and the current vibration frequency of the exhaust pipe;
when the current first difference value is larger than the current first difference value threshold value and the current second difference value is larger than the current second difference value threshold value, judging that refrigerant leakage occurs;
the current first difference threshold and the current second difference threshold are both known values.
2. The air conditioner refrigerant detection method as claimed in claim 1, further comprising:
determining an actual amount of refrigerant of the air conditioner based on the current first difference and the current second difference after it is determined that the refrigerant leakage occurs.
3. The air conditioner refrigerant detection method as claimed in claim 2, wherein determining an actual refrigerant quantity of the air conditioner based on the current first difference and the current second difference specifically comprises:
calculating a current first difference between the current first difference and the current first difference threshold and a current second difference between the current second difference and the current second difference threshold, respectively;
determining a difference range of the current difference value to which the difference between the current first difference value and the current second difference value belongs;
and determining the current refrigerant quantity matched with the difference of the current difference according to the matching relation between the known difference range and the refrigerant quantity, and determining the current refrigerant quantity as the actual refrigerant quantity.
4. An air conditioner refrigerant detection method as claimed in claim 1, wherein said current first difference threshold and said current second difference threshold are determined by:
determining a frequency range to which the current operating frequency belongs;
and determining the current first difference threshold and the current second difference threshold which are matched with the current operating frequency according to the matching relation between the known frequency range and the difference threshold.
5. The air conditioner refrigerant detection method according to any one of claims 1 to 4, further comprising:
and when the refrigerant leakage is judged to occur, giving an alarm prompt.
6. An air conditioner refrigerant detection device, characterized in that the device comprises:
the current operating frequency acquisition unit is used for acquiring the current operating frequency of the compressor in real time when the air conditioner operates;
the current air inlet pipe vibration frequency acquisition unit is used for acquiring the current air inlet pipe vibration frequency of an air inlet pipe connected with an air inlet of the compressor in real time when the air conditioner operates;
the current exhaust pipe vibration frequency acquisition unit is used for acquiring the current exhaust pipe vibration frequency of an exhaust pipe connected with an exhaust port of the compressor in real time when the air conditioner operates;
a current first difference obtaining unit, configured to obtain a current first difference between the current operating frequency and the current intake pipe vibration frequency;
a current second difference acquisition unit, configured to acquire a current second difference between the current operating frequency and the current exhaust pipe vibration frequency;
a result determination unit for determining that refrigerant leakage occurs when the current first difference is greater than a current first difference threshold and the current second difference is greater than a current second difference threshold are satisfied;
the current first difference threshold and the current second difference threshold are both known values.
7. An air conditioner refrigerant detection device as set forth in claim 6, characterized in that said device further comprises:
an actual refrigerant amount determining unit for determining an actual refrigerant amount of the air conditioner based on the current first difference and the current second difference after the result determining unit determines that the refrigerant leakage occurs.
8. An air conditioner refrigerant detection device as claimed in claim 6 or 7, further comprising:
and the alarm unit is used for giving an alarm prompt when the result determining unit determines that the refrigerant leakage occurs.
9. An air conditioner comprising a compressor, characterized in that the air conditioner further comprises a refrigerant detecting device of the air conditioner as claimed in any one of claims 6 to 8.
10. An electronic device comprising a processor, a memory and a computer program stored on the memory, wherein the processor is configured to execute the computer program to implement the air conditioner refrigerant detection method according to any one of claims 1 to 5.
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| CN202111632593.XA CN114508827B (en) | 2021-12-29 | 2021-12-29 | Air conditioner refrigerant detection method and device and air conditioner |
| PCT/CN2022/105475 WO2023124013A1 (en) | 2021-12-29 | 2022-07-13 | Air conditioner refrigerant detection method and apparatus, and air conditioner |
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| CN202111632593.XA CN114508827B (en) | 2021-12-29 | 2021-12-29 | Air conditioner refrigerant detection method and device and air conditioner |
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| WO2023124013A1 (en) * | 2021-12-29 | 2023-07-06 | 青岛海尔空调电子有限公司 | Air conditioner refrigerant detection method and apparatus, and air conditioner |
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| JP5473957B2 (en) * | 2011-01-31 | 2014-04-16 | 三菱電機株式会社 | Refrigerant leak detection device and refrigeration air conditioner |
| CN104633864B (en) * | 2015-02-05 | 2018-02-27 | 珠海格力电器股份有限公司 | Secondary refrigerant leakage detection method, device and air-conditioner outdoor unit for air-conditioning |
| CN107514839B (en) * | 2017-08-15 | 2020-03-31 | 青岛海尔空调器有限总公司 | Method and device for protecting vibration of air-conditioning compressor pipeline |
| DE102017122126A1 (en) * | 2017-09-25 | 2019-03-28 | Vaillant Gmbh | Leakage detection |
| US11573149B2 (en) * | 2017-12-01 | 2023-02-07 | Johnson Controls Tyco IP Holdings LLP | Systems and methods for refrigerant leak management based on acoustic leak detection |
| CN110836434B (en) * | 2018-08-16 | 2021-06-25 | 奥克斯空调股份有限公司 | Air conditioner refrigerant leakage detection method and device |
| CN110848875B (en) * | 2018-08-21 | 2021-05-18 | 奥克斯空调股份有限公司 | Refrigerant leakage detection method and air conditioner |
| CN111854066B (en) * | 2019-04-29 | 2024-03-08 | 珠海格力电器股份有限公司 | Air conditioner control system, control method and air conditioner |
| CN110500708B (en) * | 2019-08-28 | 2021-03-16 | 四川长虹空调有限公司 | Refrigerant leakage detection method and system for air conditioning system |
| CN113251571A (en) * | 2021-05-11 | 2021-08-13 | 青岛海尔空调器有限总公司 | Control method for air conditioner and air conditioner |
| CN114508827B (en) * | 2021-12-29 | 2023-11-24 | 青岛海尔空调电子有限公司 | Air conditioner refrigerant detection method and device and air conditioner |
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