CN105674507B - Air conditioner coolant detection method and device - Google Patents
Air conditioner coolant detection method and device Download PDFInfo
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- CN105674507B CN105674507B CN201610128131.7A CN201610128131A CN105674507B CN 105674507 B CN105674507 B CN 105674507B CN 201610128131 A CN201610128131 A CN 201610128131A CN 105674507 B CN105674507 B CN 105674507B
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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
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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
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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Abstract
The invention discloses a kind of air conditioner coolant detection methods, including：When air conditioner freezes or dehumidify operation, judge whether compressor starts；When compressor start, after the first preset time of compressor continuous service, air-conditioning inlet air temperature and indoor heat exchanger temperature is obtained, and calculate the difference between air-conditioning inlet air temperature and indoor heat exchanger temperature, be set as first temperature difference；When first temperature difference is less than the first preset value, after the second preset time of compressor continuous service, air-conditioning inlet air temperature and indoor heat exchanger temperature is obtained, and calculate the difference between air-conditioning inlet air temperature and indoor heat exchanger temperature, be set as second temperature difference；When second temperature difference is less than the second preset value, judge whether the absolute value of the difference between first temperature difference and second temperature difference is less than third preset value；If so, determining refrigerant failure.The invention also discloses a kind of air conditioner coolant detection devices.The present invention realizes coolant leakage detection, improves the reliability of operation of air conditioner.
Description
Technical field
The present invention relates to air-conditioning technical field more particularly to air conditioner coolant detection method and device.
Background technology
Existing air-conditioning refrigeration system includes compressor, outdoor heat exchanger, throttling set, indoor heat exchanger and is pre-charged with
A certain amount of refrigerant.In the case where refrigerant does not leak, air-conditioning system can normal refrigerating operaton.If air-conditioning installation is not advised
Cause system pipeline refrigerant occur due to vibration etc. when model or later stage operation slowly to leak for a long time, the refrigeration of air-conditioning system
Effect will be deteriorated.When coolant leakage is serious, compressor is often burnt, to influence the reliability of operation of air conditioner.
Invention content
The main purpose of the present invention is to provide a kind of air conditioner coolant detection method and device, it is intended to realize that coolant leakage is examined
It surveys, improves the reliability of operation of air conditioner.
To achieve the above object, detection method includes the following steps for a kind of air conditioner coolant provided by the invention：
When air conditioner freezes or dehumidify operation, judge whether compressor starts；
When compressor start, after the first preset time of compressor continuous service, air-conditioning inlet air temperature and interior are obtained
Heat exchange temperature, and the difference between air-conditioning inlet air temperature and indoor heat exchanger temperature is calculated, it is set as first temperature difference；
When first temperature difference is less than the first preset value, after the second preset time of compressor continuous service, obtain empty
Air temperature and indoor heat exchanger temperature are transferred in, and calculates the difference between air-conditioning inlet air temperature and indoor heat exchanger temperature, is set
For second temperature difference；
When second temperature difference is less than the second preset value, the absolute of the difference between first temperature difference and second temperature difference is judged
Whether value is less than third preset value；
If so, determining refrigerant failure.
Preferably, further include before the determining refrigerant failure：
The absolute value for recording the difference between first temperature difference and second temperature difference is less than the number of third preset value；
When the number of record is more than or equal to first threshold, refrigerant failure is determined；
When the number of record is less than the first threshold, after controlling the compressor shutdown third preset time, again
Start.
Preferably, after the control compressor shutdown third preset time, further include after being again started up：
When the number of record is second threshold, the indoor fan of the air conditioner is controlled by the initial wind speed that currently sets
After gear is reduced to the 4th preset time of preset windscreen operation, it is again restored to the initial wind-speed gear.
Preferably, further include after the determining refrigerant failure：
It is shut down according to air conditioner described in the refrigerant Fault Control, and shows refrigerant fault message.
Preferably, further include after the determining refrigerant failure：
Corresponding prompt message is exported to preset mobile terminal according to the refrigerant failure.
In addition, to achieve the above object, the present invention also provides a kind of air conditioner coolant detection device, the air conditioner coolant detection
Device includes：
First judgment module, for when air conditioner freezes or dehumidify operation, judging whether compressor starts；
First acquisition module, for when compressor start, after the first preset time of compressor continuous service, obtaining empty
Air temperature and indoor heat exchanger temperature are transferred in, and calculates the difference between air-conditioning inlet air temperature and indoor heat exchanger temperature, is set
For first temperature difference；
Second acquisition module is used for when first temperature difference is less than the first preset value, in compressor continuous service second
After preset time, air-conditioning inlet air temperature and indoor heat exchanger temperature are obtained, and calculate air-conditioning inlet air temperature and indoor heat exchanger temperature
Difference between degree is set as second temperature difference；
Second judgment module, for when second temperature difference is less than the second preset value, judging first temperature difference and the second temperature
Whether the absolute value of the difference between difference is less than third preset value；
Determining module is used for when the absolute value of the difference between first temperature difference and second temperature difference is less than third preset value,
Determine refrigerant failure.
Preferably, the air conditioner coolant detection device further includes：
Logging modle, the absolute value for recording the difference between first temperature difference and second temperature difference are less than third preset value
Number；When the number of record is more than or equal to first threshold, triggers the determining module and determine refrigerant failure；
First control module, for when the number of record is less than the first threshold, controlling the compressor shutdown the
After three preset times, it is again started up.
Preferably, the air conditioner coolant detection device further includes：
Second control module, for when the number of record is second threshold, control the indoor fan of the air conditioner by
After the initial wind-speed gear currently set is reduced to the 4th preset time of preset windscreen operation, it is again restored to the initial wind speed
Gear.
Preferably, the air conditioner coolant detection device further includes：
Processing module for being shut down according to air conditioner described in the refrigerant Fault Control, and shows refrigerant fault message.
Preferably, the processing module is additionally operable to export corresponding prompt message to preset shifting according to the refrigerant failure
Dynamic terminal.
The embodiment of the present invention by detecting air-conditioning inlet air temperature and indoor heat exchanger temperature, and according to air-conditioning inlet air temperature and
The situation of change of difference determines whether refrigerant leaks between indoor heat exchanger temperature, to realize coolant leakage detection, improves
The reliability of operation of air conditioner.
Description of the drawings
Fig. 1 is the flow diagram of air conditioner coolant detection method first embodiment of the present invention；
Fig. 2 is the flow diagram of air conditioner coolant detection method second embodiment of the present invention；
Fig. 3 is the flow diagram of air conditioner coolant detection method 3rd embodiment of the present invention；
Fig. 4 is the high-level schematic functional block diagram of air conditioner coolant detection device first embodiment of the present invention；
Fig. 5 is the high-level schematic functional block diagram of air conditioner coolant detection device second embodiment of the present invention；
Fig. 6 is the high-level schematic functional block diagram of air conditioner coolant detection device 3rd embodiment of the present invention.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific implementation mode
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 air conditioner coolant detection method, referring to Fig.1, in one embodiment, the air conditioner coolant detection side
Method includes：
Step S10 judges whether compressor starts when air conditioner freezes or dehumidify operation；
Air conditioner coolant detection method provided by the invention is mainly used in air-conditioning system, for cold in air-conditioning system
Whether matchmaker, which leaks, is detected, to ensure the normal operation of air conditioner.
Specifically, whether detection refrigerant leaks, mainly when air conditioner operates in refrigeration or dehumidification mode, to system
The coolant quantity of cycle is detected, to judge whether refrigerant lacks.In the present embodiment mainly by one section of compressor operating
After time, the shape that the size of the difference between the temperature of the air inlet of air conditioner indoor unit and indoor heat exchanger temperature determines refrigerant is detected
State.It first can be by the working condition of acquisition compressor, to judge whether compressor starts.
Step S20 after the first preset time of compressor continuous service, obtains air-conditioning into wind-warm syndrome when compressor start
Degree and indoor heat exchanger temperature, and the difference between air-conditioning inlet air temperature and indoor heat exchanger temperature is calculated, it is set as the first temperature
Difference；
Step S30, when first temperature difference is less than the first preset value, in the second preset time of compressor continuous service
Afterwards, air-conditioning inlet air temperature and indoor heat exchanger temperature are obtained, and is calculated between air-conditioning inlet air temperature and indoor heat exchanger temperature
Difference is set as second temperature difference；
Step S40 judges the difference between first temperature difference and second temperature difference when second temperature difference is less than the second preset value
Whether the absolute value of value is less than third preset value；If so then execute step S50, otherwise terminate.
Step S50 determines refrigerant failure.
In the present embodiment, can temperature sensor be set by the air inlet of machine indoors and detect air-conditioning inlet air temperature,
The temperature value that temperature sensing package detection preset on the coil pipe of indoor heat exchanger can be obtained, to obtain indoor heat exchanger temperature.
The time span of above-mentioned first preset time and the second preset time can be configured according to actual needs, this reality
It applies in example, the first preset time is less than the second preset time, below will be with the first preset time for 2 minutes, the second preset time
It is to be described in detail for 3 minutes.The size of above-mentioned first preset value and the second preset value can according to actual needs into
Row is arranged, and being 10 DEG C in following embodiment with the first preset value and the second preset value is explained in detail.Above-mentioned third is pre-
The size of setting can be configured according to actual needs, be carried out in detail so that third preset value is 1 DEG C as an example in following embodiment
It describes in detail bright.
Specifically, in the present embodiment, in air conditioner refrigeration or dehumidification operating mode, start to count when compressor start
When, and judge whether the time of compressor continuous service reaches 2 minutes.When the time of compressor continuous service reaching 2 minutes,
Air-conditioning inlet air temperature T1 and indoor heat exchanger temperature T2 is obtained, the difference for then calculating the two obtains the first temperature difference t1, Δ t1
=T1-T2.Then judge whether the first temperature difference t1 is less than 10 DEG C, if so, reaching 3 minutes in the compressor continuous working period
When, air-conditioning inlet air temperature T3 and indoor heat exchanger temperature T4 is obtained again, and the difference for then calculating the two obtains the first temperature difference
T2, Δ t2=T3-T4.Then judge whether the first temperature difference t2 is less than 10 DEG C, if so, judging | Δ t1- Δs t2 | it is whether small
In 1 DEG C.If so, determining the coolant leakage of air-conditioning system.
It is understood that determining air-conditioning cold according to the size of the difference of both air-conditioning inlet air temperature and indoor heat exchanger temperature
Matchmaker whether leak be because：When coolant leakage so that the coolant quantity in air-conditioning system is reduced, reduced so as to cause heat exchange efficiency, from
And can determine whether system refrigerant lacks according to the temperature conditions of both air-conditioning inlet air temperature and indoor heat exchanger temperature, in turn
It can determine whether refrigerant leaks.
The embodiment of the present invention by detecting air-conditioning inlet air temperature and indoor heat exchanger temperature, and according to air-conditioning inlet air temperature and
The situation of change of difference determines whether refrigerant leaks between indoor heat exchanger temperature, to realize coolant leakage detection, improves
The reliability of operation of air conditioner.
Further, with reference to Fig. 2, air conditioner coolant detection method second embodiment of the present invention is provided, it is empty based on the present invention
Adjust refrigerant detection method first embodiment, in air conditioner coolant detection method second embodiment, above-mentioned air conditioner coolant detection method
Further include：
Step S60, the absolute value for recording the difference between first temperature difference and second temperature difference are less than the number of third preset value；
Step S70, judges otherwise whether the number of record less than first threshold executes step if so, thening follow the steps S80
Rapid S50；
Step S80 is again started up after controlling the compressor shutdown third preset time.
In the present embodiment, the absolute value for recording the difference between first temperature difference and second temperature difference is less than time of third preset value
Several counting modes can be configured according to actual conditions.Herein, it is preferable that a variable parameter can be set for counting
The absolute value of difference between first temperature difference and second temperature difference is less than the number of third preset value, whenever first temperature difference is calculated
When the absolute value of difference between second temperature difference is less than third preset value, which adds one.Above-mentioned third preset time
Time span can be configured according to actual needs, in the present embodiment, it is preferable that the third preset time can be 3 points
Clock.The size of above-mentioned first threshold can be configured according to actual needs, such as in this embodiment, it is preferred that, this first
Threshold value is 3.Ought count on the difference between first temperature difference and second temperature difference absolute value be less than third preset value number be 3
When secondary, the coolant leakage of air-conditioning system is just determined.
In the present embodiment, since the absolute value of the difference between first temperature difference of statistics and second temperature difference is default less than third
The number of value can improve the accuracy for judging coolant leakage, be detected between first temperature difference and second temperature difference in continuous several times
Difference absolute value be less than third preset value when, then it can be assumed that air-conditioning coolant leakage.
Specifically, above-mentioned variable parameter is when air-conditioning is again introduced into refrigeration or dehumidification mode, it will resets and resets again.
Further, with reference to Fig. 3, air conditioner coolant detection method 3rd embodiment of the present invention is provided, it is empty based on the present invention
Refrigerant detection method second embodiment is adjusted, in air conditioner coolant detection method 3rd embodiment, is also wrapped after above-mentioned steps S80
It includes：
Step S90 controls the indoor fan of the air conditioner by currently setting when the number of record is second threshold
After initial wind-speed gear is reduced to the 4th preset time of preset windscreen operation, it is again restored to the initial wind-speed gear.
In the present embodiment, the size of above-mentioned second threshold can be configured according to actual needs, for example, the present embodiment with
The second threshold is described in detail for being 2.The time span of above-mentioned 4th preset time can carry out according to actual needs
It is arranged, in the present embodiment, it is preferable that the 4th preset time is 5 minutes.
Specifically, when the absolute value for counting on the difference between first temperature difference and second temperature difference is less than time of third preset value
When number is 2 times, by reducing the rotating speed of indoor fan, to further increase air-conditioning inlet air temperature and indoor heat exchanger temperature it
Between difference, and then improve detection accuracy.
It is understood that in the present embodiment, above-mentioned preset windscreen is the low wind file of indoor fan, if indoor fan is current
The initial wind-speed gear set then keeps windscreen constant as low wind file.If the initial wind-speed gear that indoor fan is currently set as
High wind shelves are then run 5 minutes first, in accordance with low wind file, are then then returned to and are run using high wind shelves.
Air conditioner coolant detection method provided in an embodiment of the present invention is high to the detection sensitivity of coolant leakage in air conditioner, and one
As can detected when coolant leakage 30% or so in air conditioner.Under individual cases, coolant leakage 20% in air conditioner
It can detected when left and right.Meanwhile the air-conditioning inlet air temperature that is detected using temperature sensor of the detection method and interior are changed
The temperature gap of hot device temperature is judged.Even if the detected value of temperature sensor has deviation, but the two sensor detected values
Difference there is no deviation, avoiding problems the erroneous judgements that the detection error because of temperature sensor itself leads to coolant leakage.
It is understood that can be configured according to actual needs for the mode of refrigerant troubleshooting.In this implementation
In example, it is preferable that can be shut down according to air conditioner described in the refrigerant Fault Control, and show refrigerant fault message.Due to
When detecting refrigerant failure, it is automatically stopped operation of air conditioner, to improve the reliability of operation of air conditioner.Show refrigerant fault message
Mode can be configured according to actual needs, such as can LED light be set on the indoor unit panel of air conditioner.
In addition, in order to inform user in time, corresponding prompt message can also be exported according to the refrigerant failure to preset
Mobile terminal.The mobile terminal can be mobile phone, and air-conditioning can be established by bluetooth and mobile phone and be communicated to connect, can also passed through
Wifi is established with mobile phone and is communicated to connect, so as to export corresponding prompt message to mobile phone, to inform user's air-conditioning by air-conditioning
There are coolant leakage phenomenons.
The present invention also provides a kind of air conditioner coolant detection devices, with reference to Fig. 4, in one embodiment, sky provided by the invention
Adjust refrigerant detection device include：
First judgment module 10, for when air conditioner freezes or dehumidify operation, judging whether compressor starts；
Air conditioner coolant detection device provided by the invention is mainly used in air-conditioning system, for cold in air-conditioning system
Whether matchmaker, which leaks, is detected, to ensure the normal operation of air conditioner.
Specifically, whether detection refrigerant leaks, mainly when air conditioner operates in refrigeration or dehumidification mode, to system
The coolant quantity of cycle is detected, to judge whether refrigerant lacks.In the present embodiment mainly by one section of compressor operating
After time, the shape that the size of the difference between the temperature of the air inlet of air conditioner indoor unit and indoor heat exchanger temperature determines refrigerant is detected
State.It first can be by the working condition of acquisition compressor, to judge whether compressor starts.
First acquisition module 20, for when compressor start, after the first preset time of compressor continuous service, obtaining
Air-conditioning inlet air temperature and indoor heat exchanger temperature, and the difference between air-conditioning inlet air temperature and indoor heat exchanger temperature is calculated, if
It is set to first temperature difference；
Second acquisition module 30, for when first temperature difference is less than the first preset value, in compressor continuous service the
After two preset times, air-conditioning inlet air temperature and indoor heat exchanger temperature are obtained, and calculate air-conditioning inlet air temperature and indoor heat exchanger
Difference between temperature is set as second temperature difference；
Second judgment module 40, for when second temperature difference is less than the second preset value, judging first temperature difference and second
Whether the absolute value of the difference between the temperature difference is less than third preset value；
Determining module 50 is less than third preset value for the absolute value when the difference between first temperature difference and second temperature difference
When, determine refrigerant failure.
In the present embodiment, can temperature sensor be set by the air inlet of machine indoors and detect air-conditioning inlet air temperature,
The temperature value that temperature sensing package detection preset on the coil pipe of indoor heat exchanger can be obtained, to obtain indoor heat exchanger temperature.
The time span of above-mentioned first preset time and the second preset time can be configured according to actual needs, this reality
It applies in example, the first preset time is less than the second preset time, below will be with the first preset time for 2 minutes, the second preset time
It is to be described in detail for 3 minutes.The size of above-mentioned first preset value and the second preset value can according to actual needs into
Row is arranged, and being 10 DEG C in following embodiment with the first preset value and the second preset value is explained in detail.Above-mentioned third is pre-
The size of setting can be configured according to actual needs, be carried out in detail so that third preset value is 1 DEG C as an example in following embodiment
It describes in detail bright.
Specifically, in the present embodiment, in air conditioner refrigeration or dehumidification operating mode, start to count when compressor start
When, and judge whether the time of compressor continuous service reaches 2 minutes.When the time of compressor continuous service reaching 2 minutes,
Air-conditioning inlet air temperature T1 and indoor heat exchanger temperature T2 is obtained, the difference for then calculating the two obtains the first temperature difference t1, Δ t1
=T1-T2.Then judge whether the first temperature difference t1 is less than 10 DEG C, if so, reaching 3 minutes in the compressor continuous working period
When, air-conditioning inlet air temperature T3 and indoor heat exchanger temperature T4 is obtained again, and the difference for then calculating the two obtains the first temperature difference
T2, Δ t2=T3-T4.Then judge whether the first temperature difference t2 is less than 10 DEG C, if so, judging | Δ t1- Δs t2 | it is whether small
In 1 DEG C.If so, determining the coolant leakage of air-conditioning system.
It is understood that determining air-conditioning cold according to the size of the difference of both air-conditioning inlet air temperature and indoor heat exchanger temperature
Matchmaker whether leak be because：When coolant leakage so that the coolant quantity in air-conditioning system is reduced, reduced so as to cause heat exchange efficiency, from
And can determine whether system refrigerant lacks according to the temperature conditions of both air-conditioning inlet air temperature and indoor heat exchanger temperature, in turn
It can determine whether refrigerant leaks.
The embodiment of the present invention by detecting air-conditioning inlet air temperature and indoor heat exchanger temperature, and according to air-conditioning inlet air temperature and
The situation of change of difference determines whether refrigerant leaks between indoor heat exchanger temperature, to realize coolant leakage detection, improves
The reliability of operation of air conditioner.
Further, with reference to Fig. 5, air conditioner coolant detection device second embodiment of the present invention is provided, it is empty based on the present invention
Adjust refrigerant detection device first embodiment, in air conditioner coolant detection device second embodiment, above-mentioned air conditioner coolant detection device
Further include：
Logging modle 60, the absolute value for recording the difference between first temperature difference and second temperature difference are less than third preset value
Number；When the number of record is more than or equal to first threshold, triggers the determining module 50 and determine refrigerant failure；
First control module 70, for when the number of record is less than the first threshold, controlling the compressor shutdown
After third preset time, it is again started up.
In the present embodiment, the absolute value for recording the difference between first temperature difference and second temperature difference is less than time of third preset value
Several counting modes can be configured according to actual conditions.Herein, it is preferable that a variable parameter can be set for counting
The absolute value of difference between first temperature difference and second temperature difference is less than the number of third preset value, whenever first temperature difference is calculated
When the absolute value of difference between second temperature difference is less than third preset value, which adds one.Above-mentioned third preset time
Time span can be configured according to actual needs, in the present embodiment, it is preferable that the third preset time can be 3 points
Clock.The size of above-mentioned first threshold can be configured according to actual needs, such as in this embodiment, it is preferred that, this first
Threshold value is 3.Ought count on the difference between first temperature difference and second temperature difference absolute value be less than third preset value number be 3
When secondary, the coolant leakage of air-conditioning system is just determined.
In the present embodiment, since the absolute value of the difference between first temperature difference of statistics and second temperature difference is default less than third
The number of value can improve the accuracy for judging coolant leakage, be detected between first temperature difference and second temperature difference in continuous several times
Difference absolute value be less than third preset value when, then it can be assumed that air-conditioning coolant leakage.
Specifically, above-mentioned variable parameter is when air-conditioning is again introduced into refrigeration or dehumidification mode, it will resets and resets again.
Further, with reference to Fig. 6, air conditioner coolant detection device 3rd embodiment of the present invention is provided, it is empty based on the present invention
Refrigerant detection device second embodiment is adjusted, in air conditioner coolant detection device 3rd embodiment, the air conditioner coolant detection device is also
Including：
Second control module 80, for when the number of record is second threshold, controlling the indoor fan of the air conditioner
After being reduced to the 4th preset time of preset windscreen operation by the initial wind-speed gear currently set, it is again restored to the initial wind
Fast gear.
In the present embodiment, the size of above-mentioned second threshold can be configured according to actual needs, for example, the present embodiment with
The second threshold is described in detail for being 2.The time span of above-mentioned 4th preset time can carry out according to actual needs
It is arranged, in the present embodiment, it is preferable that the 4th preset time is 5 minutes.
Specifically, when the absolute value for counting on the difference between first temperature difference and second temperature difference is less than time of third preset value
When number is 2 times, by reducing the rotating speed of indoor fan, to further increase air-conditioning inlet air temperature and indoor heat exchanger temperature it
Between difference, and then improve detection accuracy.
It is understood that in the present embodiment, above-mentioned preset windscreen is the low wind file of indoor fan, if indoor fan is current
The initial wind-speed gear set then keeps windscreen constant as low wind file.If the initial wind-speed gear that indoor fan is currently set as
High wind shelves are then run 5 minutes first, in accordance with low wind file, are then then returned to and are run using high wind shelves.
Air conditioner coolant detection method provided in an embodiment of the present invention is high to the detection sensitivity of coolant leakage in air conditioner, and one
As can detected when coolant leakage 30% or so in air conditioner.Under individual cases, coolant leakage 20% in air conditioner
It can detected when left and right.Meanwhile the air-conditioning inlet air temperature that is detected using temperature sensor of the detection method and interior are changed
The temperature gap of hot device temperature is judged.Even if the detected value of temperature sensor has deviation, but the two sensor detected values
Difference there is no deviation, avoiding problems the erroneous judgements that the detection error because of temperature sensor itself leads to coolant leakage.
It is understood that can be configured according to actual needs for the mode of refrigerant troubleshooting.In this implementation
In example, it is preferable that above-mentioned air conditioner coolant detection device further includes processing module, which can be according to the refrigerant failure
It controls the air conditioner to shut down, and shows refrigerant fault message.Due to when detecting refrigerant failure, being automatically stopped air-conditioning fortune
Row, to improve the reliability of operation of air conditioner.The mode of display refrigerant fault message can be configured according to actual needs,
Such as can LED light be set on the indoor unit panel of air conditioner.
In addition, in order to inform that user, above-mentioned processing module can also export according to the refrigerant failure and carry accordingly in time
Show information to preset mobile terminal.The mobile terminal can be mobile phone, and air-conditioning can establish communication link by bluetooth and mobile phone
It connects, can also be established and be communicated to connect by wifi and mobile phone, so as to export corresponding prompt message to mobile phone by air-conditioning, with
Informing user's air-conditioning, there are coolant leakage phenomenons.
It these are only the preferred embodiment of the present invention, be not intended to limit the scope of the invention, it is every to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (6)
1. a kind of air conditioner coolant detection method, which is characterized in that detection method includes the following steps for the air conditioner coolant：
When air conditioner freezes or dehumidify operation, judge whether compressor starts；
When compressor start, after the first preset time of compressor continuous service, air-conditioning inlet air temperature and indoor heat exchange are obtained
Device temperature, and the difference between air-conditioning inlet air temperature and indoor heat exchanger temperature is calculated, it is set as first temperature difference；
When first temperature difference be less than the first preset value when, after the second preset time of compressor continuous service, obtain air-conditioning into
Air temperature and indoor heat exchanger temperature, and the difference between air-conditioning inlet air temperature and indoor heat exchanger temperature is calculated, it is set as
Two temperature difference；
When second temperature difference is less than the second preset value, judge that the absolute value of the difference between first temperature difference and second temperature difference is
It is no to be less than third preset value；
If so, determining refrigerant failure；
Wherein, the absolute value for recording the difference between first temperature difference and second temperature difference is less than the number of third preset value；
When the number of record is more than or equal to first threshold, refrigerant failure is determined；
When the number of record is less than the first threshold, it is again started up after controlling the compressor shutdown third preset time,
Wherein, described be again started up further includes later：When the number of record is second threshold, the indoor fan of the air conditioner is controlled
After being reduced to the 4th preset time of preset windscreen operation by the initial wind-speed gear currently set, it is again restored to the initial wind
Fast gear.
2. air conditioner coolant detection method as described in claim 1, which is characterized in that also wrapped after the determining refrigerant failure
It includes：
It is shut down according to air conditioner described in the refrigerant Fault Control, and shows refrigerant fault message.
3. air conditioner coolant detection method as claimed in claim 2, which is characterized in that also wrapped after the determining refrigerant failure
It includes：
Corresponding prompt message is exported to preset mobile terminal according to the refrigerant failure.
4. a kind of air conditioner coolant detection device, which is characterized in that the air conditioner coolant detection device includes：
First judgment module, for when air conditioner freezes or dehumidify operation, judging whether compressor starts；
First acquisition module, for when compressor start, after the first preset time of compressor continuous service, obtain air-conditioning into
Air temperature and indoor heat exchanger temperature, and the difference between air-conditioning inlet air temperature and indoor heat exchanger temperature is calculated, it is set as
One temperature difference；
Second acquisition module is used for when first temperature difference is less than the first preset value, preset in compressor continuous service second
After time, obtain air-conditioning inlet air temperature and indoor heat exchanger temperature, and calculate air-conditioning inlet air temperature and indoor heat exchanger temperature it
Between difference, be set as second temperature difference；
Second judgment module, for when second temperature difference is less than the second preset value, judge first temperature difference and second temperature difference it
Between difference absolute value whether be less than third preset value；
Determining module, for when the absolute value of the difference between first temperature difference and second temperature difference is less than third preset value, determining
Refrigerant failure；
Logging modle, the absolute value for recording the difference between first temperature difference and second temperature difference are less than time of third preset value
Number；When the number of record is more than or equal to first threshold, triggers the determining module and determine refrigerant failure；
First control module, for when the number of record is less than the first threshold, it is pre- to control the compressor shutdown third
After setting the time, it is again started up；
Second control module, for when the number of record is second threshold, controlling the indoor fan of the air conditioner by current
After the initial wind-speed gear of setting is reduced to the 4th preset time of preset windscreen operation, it is again restored to the initial wind speed shelves
Position.
5. air conditioner coolant detection device as claimed in claim 4, which is characterized in that the air conditioner coolant detection device is also wrapped
It includes：
Processing module for being shut down according to air conditioner described in the refrigerant Fault Control, and shows refrigerant fault message.
6. air conditioner coolant detection device as claimed in claim 5, which is characterized in that the processing module is additionally operable to according to
Refrigerant failure exports corresponding prompt message to preset mobile terminal.
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| CN106123205B (en) * | 2016-06-17 | 2019-07-30 | 美的集团武汉制冷设备有限公司 | Moveable air conditioner and its coolant leakage detection method |
| CN106594966B (en) * | 2016-11-09 | 2019-03-26 | 珠海格力电器股份有限公司 | A kind of method and air-conditioning system detecting air-conditioning system coolant leakage |
| CN106524418B (en) * | 2016-11-10 | 2019-03-12 | 邯郸美的制冷设备有限公司 | Detection method, detection system and the air conditioner of air-conditioner coolant leakage |
| CN106918117A (en) * | 2017-03-02 | 2017-07-04 | 青岛海尔空调器有限总公司 | Air conditioner coolant leakage detection method and device |
| CN107084509B (en) * | 2017-06-13 | 2023-10-13 | 珠海格力电器股份有限公司 | Air conditioner additional refrigerant control method and device and air conditioner |
| CN110645673B (en) * | 2019-10-16 | 2021-03-16 | 南京天加环境科技有限公司 | Refrigerant shortage protection method for fixed-frequency air conditioner |
| CN110793171A (en) * | 2019-11-13 | 2020-02-14 | 四川长虹空调有限公司 | Judgment method for insufficient refrigerant of air conditioning system and air conditioner |
| CN111121223B (en) * | 2019-12-31 | 2022-03-11 | Tcl空调器(中山)有限公司 | Fluorine-lacking protection method of air conditioner, air conditioner and storage medium |
| CN114322200B (en) * | 2022-01-04 | 2023-03-10 | 广东美的制冷设备有限公司 | Air conditioner refrigerant leakage detection method and device, air conditioner and storage medium |
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