CN106895558A - The detection method and device of air-conditioner coolant leakage - Google Patents
The detection method and device of air-conditioner coolant leakage Download PDFInfo
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- CN106895558A CN106895558A CN201710095493.5A CN201710095493A CN106895558A CN 106895558 A CN106895558 A CN 106895558A CN 201710095493 A CN201710095493 A CN 201710095493A CN 106895558 A CN106895558 A CN 106895558A
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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
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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
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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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
Abstract
The invention discloses a kind of detection method of air-conditioner coolant leakage, the method flow includes：Obtain the first exhaust temperature of first indoor environment temperature, the first coil temperature of indoor heat exchanger and compressor of air-conditioner；When detecting the temperature difference between first coil temperature and the first indoor environment temperature less than the first preset temperature, and the first exhaust temperature is when being more than the second preset temperature, judges that the air-conditioner occurs coolant leakage.The present invention also proposes a kind of detection means of air-conditioner coolant leakage.The present invention realizes and the ruuning situation of air-conditioner is monitored, and judges whether refrigerant leaks in time.
Description
Technical field
The present invention relates to air-conditioner technical field, more particularly to a kind of leakage of air-conditioner coolant detection method and device.
Background technology
Existing air-conditioning refrigeration system includes compressor, outdoor heat exchanger, throttling arrangement, indoor heat exchanger and is pre-charged with
A certain amount of refrigerant.In the case where refrigerant is not leaked, air-conditioning system can normal refrigerating operaton.If but air-conditioning is installed not
Specification or after installing because long-play produces the reasons such as vibration, be easily caused air-conditioning system pipeline and refrigerant occur and delay for a long time
The situation of slow leakage, refrigerant can be deteriorated if the refrigeration for leakage air-conditioning system occur, or even occur what compressor burnt
Phenomenon.Accordingly, it would be desirable to whether there occurs that leakage is detected for the refrigerant in air-conditioner.
The content of the invention
The present invention provides the detection method and device of a kind of air-conditioner coolant leakage, and its main purpose is to air-conditioner
Ruuning situation is monitored, and judges whether refrigerant leaks in time.
To achieve the above object, the present invention provides a kind of detection method of air-conditioner coolant leakage, and the air-conditioner coolant is let out
The detection method of leakage includes：
Obtain the first of the first indoor environment temperature, the first coil temperature of indoor heat exchanger and the compressor of air-conditioner
Delivery temperature；
It is default less than first warm when the temperature difference between first coil temperature and the first indoor environment temperature is detected
Degree, and the first exhaust temperature is when being more than the second preset temperature, judges that the air-conditioner occurs coolant leakage.
Alternatively, it is described obtain the first indoor environment temperature of air-conditioner, the first coil temperature of indoor heat exchanger and
Before the step of first exhaust temperature of compressor, the detection method of the air-conditioner coolant leakage also includes：
In the running of air-conditioner, detect whether the duration of air-conditioner continuous service under the current model reaches
First preset duration；
If so, then performing the first indoor environment temperature, first coil temperature of indoor heat exchanger of the acquisition air-conditioner
And compressor first exhaust temperature the step of.
Alternatively, it is described obtain the first indoor environment temperature of air-conditioner, the first coil temperature of indoor heat exchanger and
Before the step of first exhaust temperature of compressor, the detection method of the air-conditioner coolant leakage also includes：
Determine the current operational mode of the air-conditioner；
If so, then performing the first indoor environment temperature, first coil temperature of indoor heat exchanger of the acquisition air-conditioner
And compressor first exhaust temperature the step of.
Alternatively, before the step of there is coolant leakage in the judgement air-conditioner, the air-conditioner coolant leakage
Detection method also includes：
It is default less than first warm when the temperature difference between first coil temperature and the first indoor environment temperature is detected
Degree, and the first exhaust temperature be more than the second preset temperature when, update first detect number of times；
If the first detection number of times after updating is more than the first preset times, the judgement air-conditioner hair is performed
The step of raw coolant leakage, and the described first detection number of times is reset；
After the step of renewal first detects number of times, the detection method of the air-conditioner coolant leakage also includes：
If the first detection number of times after updating is less than or equal to first preset times, the air-conditioning is controlled
The compressor of device is opened after closing the second preset duration.
Alternatively, after the operational mode step for determining that the air-conditioner is current, the air-conditioner coolant leakage
Detection method also includes step：
When the current operational mode of air-conditioner is refrigeration mode or dehumidification mode, obtains the air-conditioner and working as front mould
Outdoor environment temperature under formula；
If the outdoor environment temperature is more than the 3rd preset temperature, the second current indoor environment of the air-conditioner is obtained
Second coil temperature of temperature and indoor heat exchanger；
It is pre- less than the 4th when the temperature difference between second indoor environment temperature and second coil temperature is detected
If during temperature, judging that the air-conditioner occurs coolant leakage；
If the outdoor environment temperature is less than or equal to the 3rd preset temperature, the compressor is obtained current
Second exhaust temperature；
When the second exhaust temperature is more than five preset temperatures, judge that the air-conditioner occurs coolant leakage.
Alternatively, before the step of there is coolant leakage in the judgement air-conditioner, the air-conditioner coolant leakage
Detection method also includes：
Detecting, the temperature difference between second indoor environment temperature and second coil temperature is pre- less than the 4th
If during temperature, or, when the second exhaust temperature is detected more than five preset temperatures, update second and detect number of times；
If the second detection number of times after updating is more than the second preset times, the judgement air-conditioner hair is performed
The step of raw coolant leakage, and the described second detection number of times is reset；
After the step of renewal second detects number of times, the detection method of the air-conditioner coolant leakage also includes：
If the second detection number of times after updating is less than or equal to second preset times, the air-conditioning is controlled
The compressor of device is opened after closing the second preset duration.
Additionally, to achieve the above object, the present invention also provides a kind of detection means of air-conditioner coolant leakage, the air-conditioner
The detection means of coolant leakage includes：
Temperature acquisition module, the first coil pipe temperature for obtaining the first indoor environment temperature of air-conditioner, indoor heat exchanger
The first exhaust temperature of degree and compressor；
Refrigerant detection module, for the temperature between first coil temperature and the first indoor environment temperature ought to be detected
When difference is less than the first preset temperature, and the first exhaust temperature more than the second preset temperature, judge that the air-conditioner occurs cold
Matchmaker leaks.
Alternatively, the detection means of the air-conditioner coolant leakage also includes：
Time detecting module, in the running of air-conditioner, detecting that the air-conditioner continues under the current model
Whether the duration of operation reaches the first preset duration；
The temperature acquisition module is additionally operable to：If so, then obtaining the first indoor environment temperature, the indoor heat exchanger of air-conditioner
The first coil temperature and compressor first exhaust temperature.
Alternatively, the detection means of the air-conditioner coolant leakage also includes：
Mode decision module, the operational mode current for determining the air-conditioner；
The temperature acquisition module is additionally operable to：If the present mode of the air-conditioner is heating mode, the sky is obtained
Adjust device the first indoor environment temperature, first coil temperature and the first row of compressor of indoor heat exchanger under the current model
Temperature degree.
Alternatively, the temperature acquisition module is additionally operable to：If the present mode is refrigeration mode or dehumidification mode,
Obtain air-conditioner outdoor environment temperature under the current model；
And, if the outdoor environment temperature is more than the 3rd preset temperature, obtain the current second Room of the air-conditioner
Second coil temperature of interior environment temperature and indoor heat exchanger；
The refrigerant detection module is additionally operable to：When detecting second indoor environment temperature with second coil temperature
Between temperature difference when being less than four preset temperatures, judge that the air-conditioner occurs coolant leakage；
The temperature acquisition module is additionally operable to：If the outdoor environment temperature is less than or equal to the described 3rd default temperature
Degree, then obtain the current second exhaust temperature of the compressor；
The refrigerant detection module is additionally operable to：When the second exhaust temperature is more than five preset temperatures, judge described
There is coolant leakage in air-conditioner.
The detection method and device of air-conditioner coolant leakage proposed by the present invention, in the running of air-conditioner, for
Running status is monitored, and obtains the first indoor environment temperature, the of the first coil temperature of indoor heat exchanger and compressor
One delivery temperature, it is default less than first warm when the temperature difference between the first coil temperature and the first indoor environment temperature is detected
Degree, during due to normal heating operation, coil temperature can be far above indoor environment temperature, and during refrigerating operaton, coil temperature can be remote low
Temperature difference between first coil temperature and the first indoor environment temperature of indoor environment temperature, i.e. indoor heat exchanger is larger,
When there is coolant leakage, the refrigeration or heating effect of air-conditioning are deteriorated, and causing the coil temperature of indoor heat exchanger can gradually connect
Indoor environment temperature is bordering on, causes the temperature difference between the first coil temperature and the first indoor environment temperature smaller；Additionally, when cold
When matchmaker leaks, because coolant leakage can reduce compressor suction coolant quantity, the caloric value for causing refrigerant to take away compressor subtracts
Few, delivery temperature just rises, and causes the actual exhaust air temperature of compressor and can be far above its theoretical delivery temperature, i.e. first row temperature
Degree is far above the second preset temperature, therefore, when detecting the temperature difference between the first coil temperature and the first indoor environment temperature
Less than the first preset temperature, while when first exhaust temperature is more than the second preset temperature, judging that air-conditioner occurs coolant leakage.
Brief description of the drawings
Fig. 1 is the flow chart of the detection method first embodiment of air-conditioner coolant leakage of the present invention；
Fig. 2 is the flow chart of the detection method second embodiment of air-conditioner coolant leakage of the present invention；
Fig. 3 is the high-level schematic functional block diagram of the detection means first embodiment of air-conditioner coolant leakage of the present invention；
Fig. 4 is the high-level schematic functional block diagram of the detection means second embodiment of air-conditioner coolant leakage of the present invention.
The realization of the object of the invention, functional characteristics and advantage will be described further referring to the drawings in conjunction with the embodiments.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The present invention provides a kind of detection method of air-conditioner coolant leakage.It is air-conditioner coolant of the present invention shown in reference picture 1
The flow chart of the detection method first embodiment of leakage.
In the present embodiment, the detection method of air-conditioner coolant leakage includes：
Step S10, obtains the first indoor environment temperature, the first coil temperature of indoor heat exchanger and the compression of air-conditioner
The first exhaust temperature of machine.
Step S20, when detecting the temperature difference between first coil temperature and the first indoor environment temperature less than the
One preset temperature, and the first exhaust temperature is when being more than the second preset temperature, judges that the air-conditioner occurs coolant leakage.
In the running of air-conditioner, the running status to air-conditioner is monitored, and obtains air-conditioner in current fortune
First coil temperature and the first exhaust temperature of compressor of the first indoor environment temperature, indoor heat exchanger under row mode.
And calculate the temperature difference between the first coil temperature and the first indoor environment temperature.It should be noted that being related in following examples
And to temperature difference be the numerical value being calculated absolute value, i.e., be on the occasion of.For example, the first coil temperature and the first interior
Temperature difference between environment temperature refers to the absolute value that the first coil temperature subtracts the numerical value that the first indoor environment temperature is obtained.One
As in the case of, under refrigeration mode or dehumidification mode, the first coil temperature be less than the first indoor environment temperature, in heating mode
Under, the first coil temperature is more than the first indoor environment temperature.
Wherein, first coil temperature and the first row of compressor of first indoor environment temperature, indoor heat exchanger
Temperature degree can be set according to the temperature sensor for being arranged on corresponding position.
As a kind of implementation method, in the temperature difference being calculated between the first coil temperature and the first indoor environment temperature
Afterwards, whether the temperature difference is judged less than first preset temperature, if so, then judging whether the first exhaust temperature is more than
Second preset temperature, and when judging that the first exhaust temperature is more than second preset temperature, judge that air-conditioner occurs
Coolant leakage；If the temperature difference being calculated between the first coil temperature and the first indoor environment temperature is more than or equal to first
Whether preset temperature, then can no longer detect first exhaust temperature more than the second preset temperature；And continue to above-mentioned each temperature
Value is detected.
As another embodiment, can first judge that first exhaust temperature is after above-mentioned each temperature value is got
It is no to be more than the second preset temperature, if so, the temperature difference being then calculated between the first coil temperature and the first indoor environment temperature,
And whether the temperature difference is judged less than first preset temperature, if so, then judging that air-conditioner occurs coolant leakage；If first row
Temperature degree is less than or equal to the second preset temperature, then can no longer calculate the first coil temperature and the first indoor environment temperature it
Between temperature difference；And continuation is detected to above-mentioned each temperature value.
Wherein, above-mentioned first preset temperature and the second preset temperature can be obtained previously according to simulated experiment, and can be with
The running parameter of the compressor of actual motion environment and/or air-conditioner according to air-conditioner is adjusted.
Further, in order to improve the accuracy of the judgement of coolant leakage, before step S10, air-conditioner coolant leakage
Detection method also include：
In the running of air-conditioner, detect whether the duration of air-conditioner continuous service under the current model reaches
First preset duration；If so, then performing the first indoor environment temperature, first coil pipe of indoor heat exchanger of the acquisition air-conditioner
The step of first exhaust temperature of temperature and compressor.
That is, after air-conditioner start operation a period of time, when compressor and the operation shape of indoor and outdoor heat exchanger
After state reaches stable state, then detect whether refrigerant leaks.After air-conditioner starts shooting operation or switch mode operation,
Whether the duration of detection air-conditioner continuous service under the current model reaches the first preset duration, wherein, first it is default can be with
Pre-set as needed, can be the duration required for air-conditioner reaches steady operational status.If detecting air-conditioner working as
When the duration of continuous service reaches the first preset duration under premode, step S10 is performed.Can also further detect
When the duration of air-conditioner continuous service under the current model reaches the first preset duration, control air-conditioner continues to run with the 3rd and presets
Duration, obtains Average indoor environment temperature of the air-conditioner in the 3rd preset duration, average coil temperature and compressor
Average exhaust, the Average indoor environment temperature that will be got makees average coil temperature as the first indoor environment temperature
It is the first coil temperature, using average exhaust as first exhaust temperature.
It is understood that the first preset temperature proposed in the present embodiment and the second preset temperature, the first preset duration
And the 3rd preset duration etc. can be according to the working environment of air-conditioner and nominal parameter, negative as the parameter of judgment threshold
Loading capability etc. pre-sets.
Further, after judging that air-conditioner occurs coolant leakage, control air-conditioner is out of service, and exports refrigerant generation
The fault message of leakage, for example, shown on control panel or control device.
The detection method of the air-conditioner coolant leakage that the present embodiment is proposed, in the running of air-conditioner, for operation
State is monitored, and obtains the first indoor environment temperature, first coil temperature and the first row of compressor of indoor heat exchanger
Temperature degree, the first preset temperature is less than when the temperature difference between the first coil temperature and the first indoor environment temperature is detected, by
When normal heating operation, coil temperature can be far above indoor environment temperature, and during refrigerating operaton, coil temperature can be far below interior
Temperature difference between first coil temperature and the first indoor environment temperature of environment temperature, i.e. indoor heat exchanger is larger, is occurring
During coolant leakage, the refrigeration or heating effect of air-conditioning are deteriorated, and causing the coil temperature of indoor heat exchanger can move closer in room
Interior environment temperature, causes the temperature difference between the first coil temperature and the first indoor environment temperature smaller；Additionally, when refrigerant occurs
During leakage, because coolant leakage can reduce compressor suction coolant quantity, the caloric value for causing refrigerant to take away compressor is reduced, exhaust
Temperature just rises, and causes the actual exhaust air temperature of compressor and can be far above its theoretical delivery temperature, i.e. first exhaust temperature is far high
In the second preset temperature, therefore, when detecting the temperature difference between the first coil temperature and the first indoor environment temperature less than the
One preset temperature, while when first exhaust temperature is more than the second preset temperature, judging that air-conditioner occurs coolant leakage.
The second embodiment of the detection method of air-conditioner coolant leakage of the present invention is proposed based on first embodiment.Reference picture 2
Shown, in the present embodiment, in order to improve the accuracy for judging whether air-conditioner occurs coolant leakage, air-conditioner is in different fortune
Judge whether refrigerant leaks in different ways under row mode.
Before step S10, the detection method of air-conditioner coolant leakage also includes：
Step S30, determines the current operational mode of the air-conditioner；
If the current operational mode of the air-conditioner is heating mode, step S10 is performed.
After step S30, the detection method of air-conditioner coolant leakage also includes step：
Step S40, if the current operational mode of the air-conditioner is refrigeration mode or dehumidification mode, obtains the sky
Adjust device outdoor environment temperature under the current model；
Step S50, if the outdoor environment temperature be more than the 3rd preset temperature, obtain the air-conditioner it is current second
Second coil temperature of indoor environment temperature and indoor heat exchanger；
Step S60, when detecting, the temperature difference between second indoor environment temperature and second coil temperature is small
When four preset temperatures, judge that the air-conditioner occurs coolant leakage；
Step S70, if the outdoor environment temperature is less than or equal to the 3rd preset temperature, obtains the compression
The current second exhaust temperature of machine；
Step S80, when the second exhaust temperature is more than five preset temperatures, judges that the air-conditioner occurs refrigerant and lets out
Leakage.
When air-conditioner is run with heating mode, general outdoor environment temperature is relatively low, and under normal circumstances, i.e., refrigerant is not sent out
In the case of raw leakage, the delivery temperature of compressor can be slightly less than the delivery temperature of air-conditioner compressor in cooling mode.
Therefore, in order to improve the accuracy of judgement, the temperature difference between the first coil temperature and the first indoor environment temperature can be combined
Delivery temperature with compressor is detected to coolant leakage.
When air-conditioner is in a chiller mode or dehumidification mode runs, if outdoor environment temperature is higher, the exhaust of compressor
Temperature can reach higher, and when temperature is too high, compressor can start stoppage protection；If outdoor environment temperature is relatively low, intraventricular pressure
The refrigeration of contracting machine can be poor, and now, temperature difference between the coil temperature and indoor environment temperature of indoor heat exchanger can be compared with
It is small.Therefore, in order to improve coolant leakage detection accuracy, it is determined that the current operational mode of air-conditioner be refrigeration mode or
During dehumidification mode, outdoor environment temperature is obtained, when outdoor environment temperature is more than three preset temperatures, obtain air-conditioner current
Second coil temperature of the second indoor environment temperature and indoor heat exchanger under pattern, and the temperature between them are detected
When degree difference is less than four preset temperatures, judge that air-conditioner occurs coolant leakage because under normal circumstances, when outdoor environment temperature compared with
Gao Shi, preferably, the second coil temperature can be far below the second indoor environment temperature to indoor refrigeration；When outdoor environment temperature is more than
Or equal to the 3rd preset temperature, then the second exhaust temperature of compressor is obtained, and second exhaust temperature is detected more than the 5th
During preset temperature, judge that air-conditioner occurs coolant leakage.
It is understood that the 3rd preset temperature proposed in the present embodiment, the 4th preset temperature and the 5th preset temperature
Can in advance be set according to the working environment of air-conditioner and nominal parameter, load capacity etc. Deng the parameter as judgment threshold
Put.
Further, in order to reduce situation about judging by accident, set first and detect number of times and the second detection number of times, its is initial
Value is zero.In a heating mode, when detecting the temperature difference between first coil temperature and the first indoor environment temperature
When being more than the second preset temperature less than the first preset temperature, and the first exhaust temperature, update first and detect number of times；
If the first detection number of times after updating is more than the first preset times, the judgement air-conditioner hair is performed
The step of raw coolant leakage, and the described first detection number of times is reset；
After the step of updating the first detection number of times, the detection method of the air-conditioner coolant leakage also includes：
If the first detection number of times after updating is less than or equal to first preset times, the air-conditioning is controlled
The compressor of device is opened after closing the second preset duration.
The first preset temperature is less than the temperature difference between the first coil temperature and the first indoor environment temperature is detected, and
When the first exhaust temperature is more than the second preset temperature, the first detection number of times is added 1, and the first detection after judging Jia 1 is secondary
Whether number is more than the first preset times, if so, then judging that air-conditioner occurs coolant leakage, otherwise controls the compressor of air-conditioner to stop
Reopened again after only running the second preset duration, and continued with the mode operation before out of service.Above-mentioned first default time
Number, the second preset times and the second preset duration can be arranged as required to, for example, the first preset times, second default time
Number is disposed as 3-5 times；Second preset duration is set to 3-5 minutes.
Under refrigeration mode or dehumidification mode, second indoor environment temperature is being detected with the second coil pipe temperature
When temperature difference between degree is less than four preset temperatures, or, the second exhaust temperature is being detected more than the 5th default temperature
When spending, update second and detect number of times；
If the second detection number of times after updating is more than the second preset times, the judgement air-conditioner hair is performed
The step of raw coolant leakage, and the described second detection number of times is reset；
After the step of updating the second detection number of times, the detection method of the air-conditioner coolant leakage also includes：
If the second detection number of times after updating is less than or equal to second preset times, the air-conditioning is controlled
The compressor of device is opened after closing the second preset duration.
Based on the principle same with above-mentioned heating mode, under refrigeration mode or dehumidification mode, similarly for detecting
Situation and second of the temperature difference less than the 4th preset temperature between second indoor environment temperature and second coil temperature
Delivery temperature is counted more than the situation of the 5th preset temperature, when series is accumulated to certain number of times, judges that air-conditioner occurs
Coolant leakage, occurs the situation of erroneous judgement to reduce.
The present invention also proposes a kind of detection means of air-conditioner coolant leakage.
It is that the functional module of the detection means first embodiment of air-conditioner coolant leakage of the present invention is illustrated shown in reference picture 3
Figure.
In this embodiment, the detection means of air-conditioner coolant leakage includes：
Temperature acquisition module 10, the first coil pipe for obtaining the first indoor environment temperature of air-conditioner, indoor heat exchanger
The first exhaust temperature of temperature and compressor；
Refrigerant detection module 20, for the temperature between first coil temperature and the first indoor environment temperature ought to be detected
When degree difference is less than the first preset temperature, and the first exhaust temperature more than the second preset temperature, judge that the air-conditioner occurs
Coolant leakage.
In the running of air-conditioner, temperature acquisition module 10 is monitored to the running status of air-conditioner, obtains empty
Adjust first indoor environment temperature of the device under current operational mode, the first coil temperature of indoor heat exchanger and compressor
First exhaust temperature.And calculate the temperature difference between the first coil temperature and the first indoor environment temperature.It should be noted that with
The temperature difference being related in lower embodiment is the absolute value of the numerical value being calculated, i.e., be on the occasion of.For example, the first coil pipe temperature
Temperature difference between degree and the first indoor environment temperature refers to that the first coil temperature subtracts the number that the first indoor environment temperature is obtained
The absolute value of value.Generally, under refrigeration mode or dehumidification mode, the first coil temperature is less than the first indoor environment temperature
Degree, in a heating mode, the first coil temperature is more than the first indoor environment temperature.
Wherein, first coil temperature and the first row of compressor of first indoor environment temperature, indoor heat exchanger
Temperature degree can be set according to the temperature sensor for being arranged on corresponding position.
As a kind of implementation method, in the temperature difference being calculated between the first coil temperature and the first indoor environment temperature
Afterwards, whether the temperature difference is judged less than first preset temperature, if so, then judging whether the first exhaust temperature is more than
Second preset temperature, and when judging that the first exhaust temperature is more than second preset temperature, refrigerant detection module 20
Judge that air-conditioner occurs coolant leakage；If the temperature difference being calculated between the first coil temperature and the first indoor environment temperature is big
In or equal to the first preset temperature, then can no longer detect first exhaust temperature whether more than the second preset temperature；And continue
Above-mentioned each temperature value is detected.
As another embodiment, can first judge that first exhaust temperature is after above-mentioned each temperature value is got
It is no to be more than the second preset temperature, if so, the temperature difference being then calculated between the first coil temperature and the first indoor environment temperature,
And whether the temperature difference is judged less than first preset temperature, if so, then refrigerant detection module 20 judges that air-conditioner generation is cold
Matchmaker leaks；If first exhaust temperature is less than or equal to the second preset temperature, the first coil temperature and the can be no longer calculated
Temperature difference between one indoor environment temperature；And continuation is detected to above-mentioned each temperature value.
Wherein, above-mentioned first preset temperature and the second preset temperature can be obtained previously according to simulated experiment, and can be with
The running parameter of the compressor of actual motion environment and/or air-conditioner according to air-conditioner is adjusted.
Further, in order to improve the accuracy of the judgement of coolant leakage, the detection means of air-conditioner coolant leakage is also
Including：
Time supervision module, in the running of air-conditioner, detecting that the air-conditioner continues under the current model
Whether the duration of operation reaches the first preset duration；Temperature acquisition module 10 is additionally operable to if so, then obtaining the first Room of air-conditioner
The first exhaust temperature of interior environment temperature, the first coil temperature of indoor heat exchanger and compressor.
That is, after air-conditioner start operation a period of time, when compressor and the operation shape of indoor and outdoor heat exchanger
After state reaches stable state, then detect whether refrigerant leaks.After air-conditioner starts shooting operation or switch mode operation,
Whether the duration of detection air-conditioner continuous service under the current model reaches the first preset duration, wherein, first it is default can be with
Pre-set as needed, can be the duration required for air-conditioner reaches steady operational status.If detecting air-conditioner working as
When the duration of continuous service reaches the first preset duration under premode, temperature acquisition module 10 obtains the first indoor ring of air-conditioner
The first exhaust temperature of border temperature, the first coil temperature of indoor heat exchanger and compressor.Can also further, in detection
When reaching the first preset duration to the duration of air-conditioner continuous service under the current model, it is pre- that control air-conditioner continues to run with the 3rd
If duration, Average indoor environment temperature of the air-conditioner in the 3rd preset duration, average coil temperature and compressor are obtained
Average exhaust, the Average indoor environment temperature that will be got as the first indoor environment temperature, by average coil temperature
As the first coil temperature, using average exhaust as first exhaust temperature.
It is understood that the first preset temperature proposed in the present embodiment and the second preset temperature, the first preset duration
And the 3rd preset duration etc. can be according to the working environment of air-conditioner and nominal parameter, negative as the parameter of judgment threshold
Loading capability etc. pre-sets.
Further, the device also includes message output module, for after judging that air-conditioner occurs coolant leakage, controlling
Air-conditioner is out of service, and exports the fault message that refrigerant is leaked, for example, carried out on control panel or control device
Display.
The detection means of the air-conditioner coolant leakage that the present embodiment is proposed, in the running of air-conditioner, for operation
State is monitored, and obtains the first indoor environment temperature, first coil temperature and the first row of compressor of indoor heat exchanger
Temperature degree, the first preset temperature is less than when the temperature difference between the first coil temperature and the first indoor environment temperature is detected, by
When normal heating operation, coil temperature can be far above indoor environment temperature, and during refrigerating operaton, coil temperature can be far below interior
Temperature difference between first coil temperature and the first indoor environment temperature of environment temperature, i.e. indoor heat exchanger is larger, is occurring
During coolant leakage, the refrigeration or heating effect of air-conditioning are deteriorated, and causing the coil temperature of indoor heat exchanger can move closer in room
Interior environment temperature, causes the temperature difference between the first coil temperature and the first indoor environment temperature smaller；Additionally, when refrigerant occurs
During leakage, because coolant leakage can reduce compressor suction coolant quantity, the caloric value for causing refrigerant to take away compressor is reduced, exhaust
Temperature just rises, and causes the actual exhaust air temperature of compressor and can be far above its theoretical delivery temperature, i.e. first exhaust temperature is far high
In the second preset temperature, therefore, when detecting the temperature difference between the first coil temperature and the first indoor environment temperature less than the
One preset temperature, while when first exhaust temperature is more than the second preset temperature, judging that air-conditioner occurs coolant leakage.
The second embodiment of the detection means of air-conditioner coolant leakage of the present invention is proposed based on first embodiment.Reference picture 4
Shown, in the present embodiment, in order to improve the accuracy for judging whether air-conditioner occurs coolant leakage, air-conditioner is in different fortune
Judge whether refrigerant leaks in different ways under row mode.
The detection means of air-conditioner coolant leakage also includes：
Mode decision module 30, the operational mode current for determining the air-conditioner；
Temperature acquisition module 10 is additionally operable to：If the current operational mode of the air-conditioner is heating mode, obtain described
The first of air-conditioner the first indoor environment temperature under the current model, the first coil temperature of indoor heat exchanger and compressor
Delivery temperature.
Temperature acquisition module 10 is additionally operable to：If the current operational mode of the air-conditioner is refrigeration mode or dehumidifying mould
Formula, then obtain air-conditioner outdoor environment temperature under the current model；And, if the outdoor environment temperature is more than the 3rd
Preset temperature, then obtain the second coil temperature of the second current indoor environment temperature of the air-conditioner and indoor heat exchanger；
Refrigerant detection module 20 is additionally operable to：When detect second indoor environment temperature and second coil temperature it
Between temperature difference when being less than four preset temperatures, judge that the air-conditioner occurs coolant leakage；
Temperature acquisition module 10 is additionally operable to：If the outdoor environment temperature is less than or equal to the 3rd preset temperature,
Then obtain the current second exhaust temperature of the compressor；
Refrigerant detection module 20 is additionally operable to：When the second exhaust temperature is more than five preset temperatures, the sky is judged
Adjust device that coolant leakage occurs.
When air-conditioner is run with heating mode, general outdoor environment temperature is relatively low, and under normal circumstances, i.e., refrigerant is not sent out
In the case of raw leakage, the delivery temperature of compressor can be slightly less than the delivery temperature of air-conditioner compressor in cooling mode.
Therefore, in order to improve the accuracy of judgement, the temperature difference between the first coil temperature and the first indoor environment temperature can be combined
Delivery temperature with compressor is detected to coolant leakage.
When air-conditioner is in a chiller mode or dehumidification mode runs, if outdoor environment temperature is higher, the exhaust of compressor
Temperature can reach higher, and when temperature is too high, compressor can start stoppage protection；If outdoor environment temperature is relatively low, intraventricular pressure
The refrigeration of contracting machine can be poor, and now, temperature difference between the coil temperature and indoor environment temperature of indoor heat exchanger can be compared with
It is small.Therefore, in order to improve coolant leakage detection accuracy, it is determined that the current operational mode of air-conditioner be refrigeration mode or
During dehumidification mode, outdoor environment temperature is obtained, when outdoor environment temperature is more than three preset temperatures, obtain air-conditioner current
Second coil temperature of the second indoor environment temperature and indoor heat exchanger under pattern, and the temperature between them are detected
When degree difference is less than four preset temperatures, judge that air-conditioner occurs coolant leakage because under normal circumstances, when outdoor environment temperature compared with
Gao Shi, preferably, the second coil temperature can be far below the second indoor environment temperature to indoor refrigeration；When outdoor environment temperature is more than
Or equal to the 3rd preset temperature, then the second exhaust temperature of compressor is obtained, and second exhaust temperature is detected more than the 5th
During preset temperature, judge that air-conditioner occurs coolant leakage.
It is understood that the 3rd preset temperature proposed in the present embodiment, the 4th preset temperature and the 5th preset temperature
Can in advance be set according to the working environment of air-conditioner and nominal parameter, load capacity etc. Deng the parameter as judgment threshold
Put.
Further, in order to reduce situation about judging by accident, set first and detect number of times and the second detection number of times, its is initial
Value is zero.The device also includes timing module, is used for：In a heating mode, when detecting first coil temperature and
Temperature difference between one indoor environment temperature is less than the first preset temperature, and the first exhaust temperature is more than the second preset temperature
When, update first and detect number of times；
Refrigerant detection module 20 is additionally operable to：If the first detection number of times after updating is more than the first preset times, sentence
There is coolant leakage in the fixed air-conditioner；
The timing module is additionally operable to：When refrigerant detection module 20 judges that the air-conditioner occurs coolant leakage, by institute
State the clearing of the first detection number of times；
The device also includes compressor control module, if the first detection number of times after for updating is less than or equal to
First preset times, then control the compressor of the air-conditioner to be opened after closing the second preset duration.
The first preset temperature is less than the temperature difference between the first coil temperature and the first indoor environment temperature is detected, and
When the first exhaust temperature is more than the second preset temperature, the first detection number of times is added 1, and the first detection after judging Jia 1 is secondary
Whether number is more than the first preset times, if so, then judging that air-conditioner occurs coolant leakage, otherwise controls the compressor of air-conditioner to stop
Reopened again after only running the second preset duration, and continued with the mode operation before out of service.Above-mentioned first default time
Number, the second preset times and the second preset duration can be arranged as required to, for example, the first preset times, second default time
Number is disposed as 3-5 times；Second preset duration is set to 3-5 minutes.
Timing module is additionally operable to：Under refrigeration mode or dehumidification mode, second indoor environment temperature is being detected
When being less than four preset temperatures with the temperature difference between second coil temperature, or, detecting the second row temperature
When degree is more than five preset temperatures, updates second and detect number of times；
Refrigerant detection module 20 is additionally operable to：If the second detection number of times after updating is more than the second preset times, sentence
There is coolant leakage in the fixed air-conditioner；
The timing module is additionally operable to：When refrigerant detection module 20 judges that the air-conditioner occurs coolant leakage, by institute
State the clearing of the second detection number of times；
Compressor control module is additionally operable to：If the second detection number of times after updating is pre- less than or equal to described second
If number of times, then the compressor of the air-conditioner is controlled to be opened after closing the second preset duration.
Based on the principle same with above-mentioned heating mode, under refrigeration mode or dehumidification mode, similarly for detecting
Situation and second of the temperature difference less than the 4th preset temperature between second indoor environment temperature and second coil temperature
Delivery temperature is counted more than the situation of the 5th preset temperature, when series is accumulated to certain number of times, judges that air-conditioner occurs
Coolant leakage, occurs the situation of erroneous judgement to reduce.
The preferred embodiments of the present invention are these are only, the scope of the claims of the invention is not thereby limited, it is every to utilize this hair
Equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of detection method that air-conditioner coolant is leaked, it is characterised in that the detection method bag of the air-conditioner coolant leakage
Include：
Obtain the first indoor environment temperature, the first coil temperature of indoor heat exchanger and the first exhaust of compressor of air-conditioner
Temperature；
The first preset temperature is less than when the temperature difference between first coil temperature and the first indoor environment temperature is detected, and
When the first exhaust temperature is more than the second preset temperature, judge that the air-conditioner occurs coolant leakage.
2. the detection method that air-conditioner coolant according to claim 1 is leaked, it is characterised in that the acquisition air-conditioner
Before the step of first exhaust temperature of the first indoor environment temperature, the first coil temperature of indoor heat exchanger and compressor,
The detection method of the air-conditioner coolant leakage also includes：
In the running of air-conditioner, detect whether the duration of air-conditioner continuous service under the current model reaches first
Preset duration；
If so, then perform acquisition first indoor environment temperature of air-conditioner, the first coil temperature of indoor heat exchanger and
The step of first exhaust temperature of compressor.
3. the detection method that air-conditioner coolant according to claim 1 is leaked, it is characterised in that the acquisition air-conditioner
Before the step of first exhaust temperature of the first indoor environment temperature, the first coil temperature of indoor heat exchanger and compressor,
The detection method of the air-conditioner coolant leakage also includes：
Determine the current operational mode of the air-conditioner；
If the current operational mode of the air-conditioner is heating mode, the first indoor environment temperature of the acquisition air-conditioner is performed
The step of first exhaust temperature of degree, the first coil temperature of indoor heat exchanger and compressor.
4. the detection method that air-conditioner coolant according to any one of claim 1 to 3 is leaked, it is characterised in that described
Before judging the step of air-conditioner occurs coolant leakage, the detection method of the air-conditioner coolant leakage also includes：
The first preset temperature is less than when the temperature difference between first coil temperature and the first indoor environment temperature is detected, and
When the first exhaust temperature is more than the second preset temperature, updates first and detect number of times；
If the first detection number of times after updating is more than the first preset times, the judgement air-conditioner generation is performed cold
The step of matchmaker leaks, and the described first detection number of times is reset；
After the step of renewal first detects number of times, the detection method of the air-conditioner coolant leakage also includes：
If the first detection number of times after updating is less than or equal to first preset times, the air-conditioner is controlled
Compressor is opened after closing the second preset duration.
5. the detection method that air-conditioner coolant according to claim 3 is leaked, it is characterised in that if described determine the sky
Adjust after the current operational mode step of device, the detection method of the air-conditioner coolant leakage also includes step：
When the current operational mode of air-conditioner is refrigeration mode or dehumidification mode, the air-conditioner is obtained under the current model
Outdoor environment temperature；
If the outdoor environment temperature is more than the 3rd preset temperature, the second current indoor environment temperature of the air-conditioner is obtained
And the second coil temperature of indoor heat exchanger；
It is default less than the 4th warm when the temperature difference between second indoor environment temperature and second coil temperature is detected
When spending, judge that the air-conditioner occurs coolant leakage；
If the outdoor environment temperature be less than or equal to the 3rd preset temperature, obtain the compressor it is current second
Delivery temperature；
When the second exhaust temperature is more than five preset temperatures, judge that the air-conditioner occurs coolant leakage.
6. the detection method that air-conditioner coolant according to claim 5 is leaked, it is characterised in that the judgement air-conditioning
Before the step of device occurs coolant leakage, the detection method of the air-conditioner coolant leakage also includes：
The temperature difference between second indoor environment temperature and second coil temperature is being detected less than the 4th default temperature
When spending, or, when the second exhaust temperature is detected more than five preset temperatures, update second and detect number of times；
If the second detection number of times after updating is more than the second preset times, the judgement air-conditioner generation is performed cold
The step of matchmaker leaks, and the described second detection number of times is reset；
After the step of renewal second detects number of times, the detection method of the air-conditioner coolant leakage also includes：
If the second detection number of times after updating is less than or equal to second preset times, the air-conditioner is controlled
Compressor is opened after closing the second preset duration.
7. a kind of detection means that air-conditioner coolant is leaked, it is characterised in that the detection means bag of the air-conditioner coolant leakage
Include：
Temperature acquisition module, for obtain the first indoor environment temperature of air-conditioner, the first coil temperature of indoor heat exchanger with
And the first exhaust temperature of compressor；
Refrigerant detection module, for small when the temperature difference between first coil temperature and the first indoor environment temperature is detected
When the first preset temperature, and the first exhaust temperature are more than the second preset temperature, judge that the air-conditioner occurs refrigerant and lets out
Leakage.
8. the detection means that air-conditioner coolant according to claim 7 is leaked, it is characterised in that the air-conditioner coolant is let out
The detection means of dew also includes：
Time detecting module, in the running of air-conditioner, detecting air-conditioner continuous service under the current model
Duration whether reach the first preset duration；
The temperature acquisition module is additionally operable to：If so, then obtaining the first indoor environment temperature of air-conditioner, the of indoor heat exchanger
The first exhaust temperature of one coil temperature and compressor.
9. the detection means that the air-conditioner coolant according to claim 7 or 8 is leaked, it is characterised in that the air-conditioner is cold
The detection means of matchmaker's leakage also includes：
Mode decision module, the operational mode current for determining the air-conditioner；
The temperature acquisition module is additionally operable to：If the current operational mode of the air-conditioner is heating mode, the sky is obtained
Adjust device the first indoor environment temperature, first coil temperature and the first row of compressor of indoor heat exchanger under the current model
Temperature degree.
10. the detection means that air-conditioner coolant according to claim 9 is leaked, it is characterised in that the temperature obtains mould
Block is additionally operable to：If the current operational mode of the air-conditioner is refrigeration mode or dehumidification mode, obtains the air-conditioner and exist
Outdoor environment temperature under present mode；
And, if the outdoor environment temperature is more than the 3rd preset temperature, obtain the current second Room inner ring of the air-conditioner
Second coil temperature of border temperature and indoor heat exchanger；
The refrigerant detection module is additionally operable to：When detecting between second indoor environment temperature and second coil temperature
Temperature difference when being less than four preset temperatures, judge that the air-conditioner occurs coolant leakage；
The temperature acquisition module is additionally operable to：If the outdoor environment temperature is less than or equal to the 3rd preset temperature,
Obtain the current second exhaust temperature of the compressor；
The refrigerant detection module is additionally operable to：When the second exhaust temperature is more than five preset temperatures, the air-conditioning is judged
There is coolant leakage in device.
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