CN104061655B - Failure detection method and failure detection device for air conditioner refrigerating system and air conditioner - Google Patents
Failure detection method and failure detection device for air conditioner refrigerating system and air conditioner Download PDFInfo
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- CN104061655B CN104061655B CN201410268747.5A CN201410268747A CN104061655B CN 104061655 B CN104061655 B CN 104061655B CN 201410268747 A CN201410268747 A CN 201410268747A CN 104061655 B CN104061655 B CN 104061655B
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Abstract
The invention provides a failure detection method and a failure detection device for an air conditioner refrigerating system and an air conditioner. The air conditioner refrigerating system comprises a compressor, an evaporator and a condenser. The failure detection method comprises the steps of detecting the indoor temperature in a room where the air conditioner is located, the temperature of the evaporator and the temperature of the condenser; judging whether the temperature of the evaporator and the temperature of the condenser are abnormal or not according to the indoor temperature, the temperature of the evaporator and the temperature of the condenser, and determining whether the air conditioner refrigerating system breaks down or not. Through the technical scheme provided by the invention, whether the air conditioner refrigerating system breaks down or not can be accurately detected, and the reliability of a detection system can be enhanced.
Description
Technical field
The present invention relates to refrigeration technology field, in particular to a kind of fault detect for air-conditioner refrigerating system
Method, a kind of failure detector for air-conditioner refrigerating system and a kind of air-conditioner.
Background technology
At present, Refrigeration Technique is widely used as a kind of more ripe technology, especially in the system of air-conditioner
Cold with dehumidifying field, when air-conditioner refrigeration system occur as coolant leakage, refrigerating system throttling valve blocking or compressor capacitor
During the problems such as damage, cannot normal work, but current lack effectively be directed to the abnormal cognitive method of refrigeration system and
Protective measure, can not remind when leading to refrigeration system to break down, causes air-conditioner to be chronically at abnormal in timely automated perception
Energising or running status, not only waste the energy, also create some potential safety hazards simultaneously.
It is directed to the secondary refrigerant leakage how detecting air-conditioner it is proposed that indoor heat exchanger temperature according to air-conditioner in correlation technique
Degree t1With air themperature t sucking2The scheme that judged of difference, the specifically t of detection pre-determined number (as 3 times)1And t2,
If arbitrary time detects t1-t2< data 1, or t1-t2> data 2, then judge that the coolant of air-conditioner leaks, if predetermined
Number of times detection does not determine the secondary refrigerant leakage of air-conditioner after judging, then subsequently no longer carry out detection and judge.This scheme exist with
Lower defect:
1) judged according only to indoor heat exchanger temperature and air themperature, be vulnerable to the impact of temperature acquisition deviation, really
Recognize precision relatively low；
2) if detecting any one in the sensor of air themperature that the sensor of indoor heat exchange temperature and detection suck
Break down, then cannot continue to judge whether coolant leaks；
3) if not finding the secondary refrigerant leakage of air-conditioner after detection pre-determined number, subsequently no longer carrying out detection process, leading to
Air-conditioner occurs cannot finding in time during secondary refrigerant leakage during long-play.
Therefore, how accurately to detect whether the refrigeration system of air-conditioner breaks down, and improve the reliability of detecting system
Property becomes technical problem urgently to be resolved hurrily.
Content of the invention
It is contemplated that at least solving one of technical problem present in prior art or correlation technique.
For this reason, it is an object of the present invention to proposing whether a kind of refrigeration system that can accurately detect air-conditioner goes out
Existing fault, and there is the fault detection method of higher reliability.
Further object is that proposing a kind of failure detector for air-conditioner refrigerating system.
A further object of the present invention is to propose a kind of air-conditioner.
For achieving the above object, embodiment according to the first aspect of the invention is it is proposed that a kind of freeze for air-conditioner
The fault detection method of system, described air-conditioner refrigerating system includes compressor, vaporizer and condenser, described fault detect side
Method includes: detects the temperature of the indoor temperature, the temperature of described vaporizer and described condenser residing for described air-conditioner；According to institute
The temperature stating indoor temperature, the temperature of described vaporizer and described condenser judges the temperature of described vaporizer and described condenser
Temperature whether abnormal, to determine whether described air-conditioner refrigerating system breaks down.
It is used for the fault detection method of air-conditioner refrigerating system according to an embodiment of the invention, by according to air-conditioner institute
The indoor temperature at place, the temperature of vaporizer and the temperature of condenser judge whether the temperature of the temperature of vaporizer and condenser is different
Often, to judge to whether air-conditioner refrigerating system breaks down, compared in correlation technique only by indoor heat exchanger temperature
Degree and air themperature judge whether coolant occurs the scheme leaking, and increased and are sentenced according to the temperature of indoor temperature and condenser
Disconnected, and the scheme that the temperature of the temperature according to vaporizer and condenser is judged, enabling comprehensive multiple temperature are to sky
Adjust device refrigeration system whether to break down to be judged, improve the accuracy of judged result, and the technical scheme of the application
Breakdown of refrigeration system that secondary refrigerant leakage leads to not only can be detected additionally it is possible to detection refrigerating system throttling valve blocking or compression are dynamo-electric
Hold the breakdown of refrigeration system that the problems such as damage is caused.Meanwhile, even if detecting sensor, the detection evaporator temperature of indoor temperature
Sensor and detection condenser temperature sensor in any sensor break down, still can by other two sense
Device detection temperature is simultaneously judged, improves the reliability of detecting system.Additionally, during the whole service of air-conditioner, this
The technical scheme that application proposes all can carry out detection and judge, solve in correlation technique after only detection judges several times just no longer
The problem being judged.
In addition, the fault detection method for air-conditioner refrigerating system according to the above embodiment of the present invention, can also have
Have as follows add technical characteristic:
According to one embodiment of present invention, judge whether the temperature of the temperature of described vaporizer and described condenser is abnormal
Step particularly as follows: when the difference of described indoor temperature and the temperature of described vaporizer is less than or equal to the first predetermined threshold,
Judge the temperature anomaly of described vaporizer；It is less than or equal to second in the temperature of described condenser with the difference of described indoor temperature
During predetermined threshold, judge the temperature anomaly of described condenser；Difference in the temperature of temperature and the described vaporizer of described condenser
When value is less than or equal to three predetermined thresholds, judge the temperature of described vaporizer or the temperature anomaly of described condenser.
It is used for the fault detection method of air-conditioner refrigerating system according to an embodiment of the invention, due to freezing in air-conditioner
In the case of system is normal, the temperature of vaporizer is less than indoor temperature and condenser temperature, and indoor temperature is again smaller than condenser temperature
Degree, and difference is larger, and when refrigeration system breaks down, when such as there is secondary refrigerant leakage, the temperature of vaporizer raises, condenser
Temperature reduce, lead to the temperature of condenser and the temperature difference of vaporizer to reduce, the difference of the temperature of condenser and indoor temperature
Value reduces, and the temperature difference of indoor temperature and vaporizer also reduces, and choke valve blocking in refrigeration system or compress
During the problems such as machine capacitance damage, be equivalent to the situation of coolant leakage completely, therefore, it can by judging indoor temperature, vaporizer
Temperature and the relation of Difference in condenser temperature three and predetermined value, determine that the temperature of vaporizer with the temperature of condenser is
No exception.
In the above embodiment, it is preferable that described first predetermined threshold is between 0 DEG C to 4 DEG C；Described second predetermined threshold
Value is between 0 DEG C to 4 DEG C；Described 3rd predetermined threshold is between 0 DEG C to 8 DEG C.
According to one embodiment of present invention, determine that the step whether described air-conditioner refrigerating system breaks down is concrete
For: at predetermined time intervals, all judge whether the temperature of the temperature of described vaporizer and described condenser is abnormal；In described air-conditioner
Running in, if it is determined that the temperature of described vaporizer occur abnormal number of times and described condenser temperature occur abnormal
Number of times reaches pre-determined number it is determined that described air-conditioner refrigerating system breaks down.
It is used for the fault detection method of air-conditioner refrigerating system according to an embodiment of the invention, if examining once or several times
Measure the temperature anomaly of vaporizer and the temperature anomaly of condenser, be then likely due to sensor fault or air-conditioner runs shakiness
Surely lead to, therefore pass through the temperature anomaly in the number of times of temperature anomaly vaporizer is detected and condenser number of times reach pre-
When determining many number of times, then judge that air-conditioner refrigerating system breaks down, it is possible to increase the accuracy of judged result.And pass through every
The scheduled time judges once it can be ensured that the multiple result judging is not subject to the cause specific of synchronization (as a certain moment air-conditioning
Device fluctuation of service etc.) impact.Wherein, the scheduled time can be 5 minutes.It should be noted that in this embodiment, vaporizer
Temperature and condenser temperature in any one occurs abnormal, be accordingly to be regarded as occurring once abnormal.
According to one embodiment of present invention, after determining that described air-conditioner refrigerating system breaks down, carry out prompting and/
Or close described compressor.
It is used for the fault detection method of air-conditioner refrigerating system according to an embodiment of the invention, by determining refrigeration system
System is pointed out so that user can take measures on customs clearance (as shutdown etc.) to avoid air-conditioner to work on and produce after breaking down
Raw potential safety hazard.
Embodiment according to a second aspect of the present invention is it is also proposed that a kind of fault detect for air-conditioner refrigerating system fills
Put, described air-conditioner refrigerating system includes compressor, vaporizer and condenser, described failure detector includes: detector unit,
For detecting the temperature of indoor temperature, the temperature of described vaporizer and described condenser residing for described air-conditioner；Processing unit,
The temperature of described indoor temperature, the temperature of described vaporizer and described condenser for being detected according to described detector unit is sentenced
Whether the temperature of the temperature of disconnected described vaporizer and described condenser is abnormal, to determine whether described air-conditioner refrigerating system occurs
Fault.
It is used for the failure detector of air-conditioner refrigerating system according to an embodiment of the invention, by according to air-conditioner institute
The indoor temperature at place, the temperature of vaporizer and the temperature of condenser judge whether the temperature of the temperature of vaporizer and condenser is different
Often, to judge to whether air-conditioner refrigerating system breaks down, compared in correlation technique only by indoor heat exchanger temperature
Degree and air themperature judge whether coolant occurs the scheme leaking, and increased and are sentenced according to the temperature of indoor temperature and condenser
Disconnected, and the scheme that the temperature of the temperature according to vaporizer and condenser is judged, enabling comprehensive multiple temperature are to sky
Adjust device refrigeration system whether to break down to be judged, improve the accuracy of judged result, and the technical scheme of the application
Breakdown of refrigeration system that secondary refrigerant leakage leads to not only can be detected additionally it is possible to detection refrigerating system throttling valve blocking or compression are dynamo-electric
Hold the breakdown of refrigeration system that the problems such as damage is caused.Meanwhile, even if detecting sensor, the detection evaporator temperature of indoor temperature
Sensor and detection condenser temperature sensor in any sensor break down, still can by other two sense
Device detection temperature is simultaneously judged, improves the reliability of detecting system.Additionally, during the whole service of air-conditioner, this
The technical scheme that application proposes all can carry out detection and judge, solve in correlation technique after only detection judges several times just no longer
The problem being judged.
According to one embodiment of present invention, described processing unit specifically for: in described indoor temperature and described evaporation
When the difference of the temperature of device is less than or equal to the first predetermined threshold, judge the temperature anomaly of described vaporizer；In described condenser
The difference of temperature and described indoor temperature when being less than or equal to the second predetermined threshold, judge the temperature anomaly of described condenser；
When the temperature of described condenser is less than or equal to three predetermined thresholds with the difference of the temperature of described vaporizer, judge described steaming
Send out the temperature of device or the temperature anomaly of described condenser.
It is used for the failure detector of air-conditioner refrigerating system according to an embodiment of the invention, due to freezing in air-conditioner
In the case of system is normal, the temperature of vaporizer is less than indoor temperature and condenser temperature, and indoor temperature is again smaller than condenser temperature
Degree, and difference is larger, and when refrigeration system breaks down, when such as there is secondary refrigerant leakage, the temperature of vaporizer raises, condenser
Temperature reduce, lead to the temperature of condenser and the temperature difference of vaporizer to reduce, the difference of the temperature of condenser and indoor temperature
Value reduces, and the temperature difference of indoor temperature and vaporizer also reduces, and choke valve blocking in refrigeration system or compress
During the problems such as machine capacitance damage, be equivalent to the situation of coolant leakage completely, therefore, it can by judging indoor temperature, vaporizer
Temperature and the relation of Difference in condenser temperature three and predetermined value, determine that the temperature of vaporizer with the temperature of condenser is
No exception.
In the above embodiment, it is preferable that described first predetermined threshold is between 0 DEG C to 4 DEG C；Described second predetermined threshold
Value is between 0 DEG C to 4 DEG C；Described 3rd predetermined threshold is between 0 DEG C to 8 DEG C.
According to one embodiment of present invention, described processing unit is specifically additionally operable to: at predetermined time intervals, all judges described
Whether the temperature of the temperature of vaporizer and described condenser is abnormal；In the running of described air-conditioner, if it is determined that described steaming
The temperature of abnormal number of times and described condenser and abnormal number of times and reach pre-determined number it is determined that institute in the temperature sending out device
State air-conditioner refrigerating system to break down.
It is used for the failure detector of air-conditioner refrigerating system according to an embodiment of the invention, if examining once or several times
Measure the temperature anomaly of vaporizer and the temperature anomaly of condenser, be then likely due to sensor fault or air-conditioner runs shakiness
Surely lead to, therefore pass through the temperature anomaly in the number of times of temperature anomaly vaporizer is detected and condenser number of times reach pre-
When determining many number of times, then judge that air-conditioner refrigerating system breaks down, it is possible to increase the accuracy of judged result.And pass through every
The scheduled time judges once it can be ensured that the multiple result judging is not subject to the cause specific of synchronization (as a certain moment air-conditioning
Device fluctuation of service etc.) impact.Wherein, the scheduled time can be 5 minutes.Wherein, in this embodiment, the temperature of vaporizer and
In the temperature of condenser, any one occurs extremely, being accordingly to be regarded as appearance once abnormal.
According to one embodiment of present invention, also include: Tip element, for determining described air-conditioning in described processing unit
After device refrigeration system breaks down, pointed out；And/or described processing unit is additionally operable to, determining described air-conditioner refrigeration system
After system breaks down, close described compressor.
It is used for the failure detector of air-conditioner refrigerating system according to an embodiment of the invention, by determining refrigeration system
System is pointed out so that user can take measures on customs clearance (as shutdown etc.) to avoid air-conditioner to work on and produce after breaking down
Raw potential safety hazard.
Embodiment according to a third aspect of the present invention is it is also proposed that a kind of air-conditioner, comprising: refrigeration system；And it is above-mentioned
The failure detector for air-conditioner refrigerating system described in any one embodiment.
The additional aspect of the present invention and advantage will be set forth in part in the description, and partly will become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description
The above-mentioned and/or additional aspect of the present invention and advantage will become from reference to the description to embodiment for the accompanying drawings below
Substantially and easy to understand, wherein:
Fig. 1 shows the signal stream of the fault detection method being used for air-conditioner refrigerating system according to an embodiment of the invention
Cheng Tu；
Fig. 2 shows the schematic block of the failure detector being used for air-conditioner refrigerating system according to an embodiment of the invention
Figure；
Fig. 3 shows the structural representation of air-conditioner according to an embodiment of the invention；
Fig. 4 shows the fault detection method for air-conditioner refrigerating system according to another embodiment of the invention
Schematic flow diagram.
Specific embodiment
In order to be more clearly understood that the above objects, features and advantages of the present invention, below in conjunction with the accompanying drawings and specifically real
Mode of applying is further described in detail to the present invention.It should be noted that in the case of not conflicting, the enforcement of the application
Feature in example and embodiment can be mutually combined.
Elaborate a lot of details in the following description in order to fully understand the present invention, but, the present invention also may be used
To be implemented different from other modes described here using other, therefore, protection scope of the present invention is not described below
Specific embodiment restriction.
Fig. 1 shows the signal stream of the fault detection method being used for air-conditioner refrigerating system according to an embodiment of the invention
Cheng Tu.
As shown in figure 1, being used for the fault detection method of air-conditioner refrigerating system according to an embodiment of the invention, described sky
Adjust device refrigeration system to include compressor, vaporizer and condenser, described fault detection method includes: step 102, detect described sky
Adjust the temperature of the indoor temperature, the temperature of described vaporizer and described condenser residing for device；Step 104, according to described Indoor Temperature
The temperature of degree, the temperature of described vaporizer and described condenser judges that the temperature of described vaporizer and the temperature of described condenser are
No exception, to determine whether described air-conditioner refrigerating system breaks down.
Judge the temperature of vaporizer by the temperature of the indoor temperature according to residing for air-conditioner, the temperature of vaporizer and condenser
Whether the temperature of degree and condenser is abnormal, to judge to whether air-conditioner refrigerating system breaks down, compared to related skill
Only pass through indoor heat exchanger temperature in art and judge whether coolant occurs the scheme leaking with air themperature, increased according to Indoor Temperature
Degree is judged with the temperature of condenser, and the scheme that the temperature of the temperature according to vaporizer and condenser is judged, makes
Obtain and can comprehensively multiple temperature judge to whether air-conditioner refrigerating system breaks down, improve the accurate of judged result
Property, and the technical scheme of the application not only can detect that the breakdown of refrigeration system that secondary refrigerant leakage leads to freezes additionally it is possible to detect
The breakdown of refrigeration system that system throttles valve blocks or compressor capacitor causes the problems such as damage.Meanwhile, even if in detection Indoor Temperature
In the sensor of the sensor of degree, the sensor of detection evaporator temperature and detection condenser temperature, event in any sensor
Barrier, still by other two sensor detection temperatures and can be judged, be improve the reliability of detecting system.Additionally,
During the whole service of air-conditioner, the technical scheme that the application proposes all can carry out detection and judge, solve related skill
With regard to the problem no longer being judged after in art, only detection judges several times.
In addition, the fault detection method for air-conditioner refrigerating system according to the above embodiment of the present invention, can also have
Have as follows add technical characteristic:
According to one embodiment of present invention, judge whether the temperature of the temperature of described vaporizer and described condenser is abnormal
Step particularly as follows: when the difference of described indoor temperature and the temperature of described vaporizer is less than or equal to the first predetermined threshold,
Judge the temperature anomaly of described vaporizer；It is less than or equal to second in the temperature of described condenser with the difference of described indoor temperature
During predetermined threshold, judge the temperature anomaly of described condenser；Difference in the temperature of temperature and the described vaporizer of described condenser
When value is less than or equal to three predetermined thresholds, judge the temperature of described vaporizer or the temperature anomaly of described condenser.
Because, in the case of air-conditioner refrigerating system is normal, the temperature of vaporizer is less than indoor temperature and condenser temperature
Degree, indoor temperature is again smaller than condenser temperature, and difference is larger, when refrigeration system breaks down, secondary refrigerant leakage such as occurs
When, the temperature of vaporizer raises, the temperature of condenser reduces, lead to the temperature of condenser and the temperature difference of vaporizer to reduce,
The temperature of condenser is reduced with the difference of indoor temperature, and the temperature difference of indoor temperature and vaporizer also reduces, and in system
Cooling system occur choke valve blocking or compressor capacitor the problems such as damage when, be equivalent to the situation of coolant leakage completely, therefore, can
With the relation by judging Difference and predetermined value in indoor temperature, evaporator temperature and condenser temperature three, determine and steam
Whether the temperature sending out device is abnormal with the temperature of condenser.
In the above embodiment, it is preferable that described first predetermined threshold is between 0 DEG C to 4 DEG C；Described second predetermined threshold
Value is between 0 DEG C to 4 DEG C；Described 3rd predetermined threshold is between 0 DEG C to 8 DEG C.
According to one embodiment of present invention, determine that the step whether described air-conditioner refrigerating system breaks down is concrete
For: at predetermined time intervals, all judge whether the temperature of the temperature of described vaporizer and described condenser is abnormal；In described air-conditioner
Running in, if it is determined that the temperature of described vaporizer occur abnormal number of times and described condenser temperature occur abnormal
Number of times reaches pre-determined number it is determined that described air-conditioner refrigerating system breaks down.
If the temperature anomaly of vaporizer and the temperature anomaly of condenser is detected once or several times, it is likely due to pass
Sensor fault or air-conditioner fluctuation of service lead to, and therefore pass through in the number of times of temperature anomaly vaporizer is detected and condensation
The number of times of the temperature anomaly of device reaches when making a reservation for many number of times, then judges that air-conditioner refrigerating system breaks down, it is possible to increase sentence
The accuracy of disconnected result.And pass through to judge at predetermined time intervals once it can be ensured that the multiple result judging is not subject to synchronization
Cause specific (as a certain moment air-conditioner fluctuation of service etc.) impact.Wherein, the scheduled time can be 5 minutes.Need to note
Meaning, in this embodiment, in the temperature of vaporizer and the temperature of condenser, any one occurs extremely, being accordingly to be regarded as appearance once
Abnormal.
Specifically, for example, under conditions of 27 DEG C of condition of mark, air-conditioner is in a chiller mode or dehumidification mode is started shooting, and with 5 points
Clock was judged for the cycle, arranges above-mentioned first predetermined threshold and is 4 DEG C, above-mentioned second predetermined threshold is 4 DEG C, and the above-mentioned 3rd makes a reservation for
Threshold value is 8 DEG C, under normal circumstances, indoor temperature t after air-conditioner is stable1For 27 DEG C, temperature t of vaporizer2For 10
DEG C, temperature t of condenser3For 45 DEG C, i.e. t1-t2=10 DEG C, t3-t2=35 DEG C, t3-t1=18 DEG C；If event in refrigeration system
Barrier (as secondary refrigerant leakage etc.), then can record and t is detected1-t2<4℃、t3-t1< 4 DEG C, and t3-t2< 8 DEG C of number of times, if in sky
During adjusting device to run, have recorded pre-determined number (as 20 is inferior), then can be determined that the refrigeration system of air-conditioner breaks down.
According to one embodiment of present invention, after determining that described air-conditioner refrigerating system breaks down, carry out prompting and/
Or close described compressor.
By being pointed out so that user can take measures on customs clearance (as shut down after determination refrigeration system breaks down
Deng) avoid air-conditioner to work on and produce potential safety hazard.
Fig. 2 shows the schematic block of the failure detector being used for air-conditioner refrigerating system according to an embodiment of the invention
Figure.
As shown in Fig. 2 being used for the failure detector 200 of air-conditioner refrigerating system, institute according to an embodiment of the invention
State air-conditioner refrigerating system and include compressor, vaporizer and condenser, described failure detector includes: detector unit 202, use
Temperature in the indoor temperature, the temperature of described vaporizer and described condenser detecting residing for described air-conditioner；Processing unit
204, for the described indoor temperature, the temperature of described vaporizer and the described condenser that are detected according to described detector unit 202
Temperature judge whether the temperature of the temperature of described vaporizer and described condenser abnormal, to determine described air-conditioner refrigerating system
Whether break down.
Judge the temperature of vaporizer by the temperature of the indoor temperature according to residing for air-conditioner, the temperature of vaporizer and condenser
Whether the temperature of degree and condenser is abnormal, to judge to whether air-conditioner refrigerating system breaks down, compared to related skill
Only pass through indoor heat exchanger temperature in art and judge whether coolant occurs the scheme leaking with air themperature, increased according to Indoor Temperature
Degree is judged with the temperature of condenser, and the scheme that the temperature of the temperature according to vaporizer and condenser is judged, makes
Obtain and can comprehensively multiple temperature judge to whether air-conditioner refrigerating system breaks down, improve the accurate of judged result
Property, and the technical scheme of the application not only can detect that the breakdown of refrigeration system that secondary refrigerant leakage leads to freezes additionally it is possible to detect
The breakdown of refrigeration system that system throttles valve blocks or compressor capacitor causes the problems such as damage.Meanwhile, even if in detection Indoor Temperature
In the sensor of the sensor of degree, the sensor of detection evaporator temperature and detection condenser temperature, event in any sensor
Barrier, still by other two sensor detection temperatures and can be judged, be improve the reliability of detecting system.Additionally,
During the whole service of air-conditioner, the technical scheme that the application proposes all can carry out detection and judge, solve related skill
With regard to the problem no longer being judged after in art, only detection judges several times.
According to one embodiment of present invention, described processing unit 204 specifically for: in described indoor temperature and described steaming
Send out device temperature difference be less than or equal to the first predetermined threshold when, judge described vaporizer temperature anomaly；In described condensation
When the difference of the temperature of device and described indoor temperature is less than or equal to the second predetermined threshold, judge that the temperature of described condenser is different
Often；When the temperature of described condenser is less than or equal to three predetermined thresholds with the difference of the temperature of described vaporizer, judge institute
State the temperature of vaporizer or the temperature anomaly of described condenser.
Because, in the case of air-conditioner refrigerating system is normal, the temperature of vaporizer is less than indoor temperature and condenser temperature
Degree, indoor temperature is again smaller than condenser temperature, and difference is larger, when refrigeration system breaks down, secondary refrigerant leakage such as occurs
When, the temperature of vaporizer raises, the temperature of condenser reduces, lead to the temperature of condenser and the temperature difference of vaporizer to reduce,
The temperature of condenser is reduced with the difference of indoor temperature, and the temperature difference of indoor temperature and vaporizer also reduces, and in system
Cooling system occur choke valve blocking or compressor capacitor the problems such as damage when, be equivalent to the situation of coolant leakage completely, therefore, can
With the relation by judging Difference and predetermined value in indoor temperature, evaporator temperature and condenser temperature three, determine and steam
Whether the temperature sending out device is abnormal with the temperature of condenser.
In the above embodiment, it is preferable that described first predetermined threshold is between 0 DEG C to 4 DEG C；Described second predetermined threshold
Value is between 0 DEG C to 4 DEG C；Described 3rd predetermined threshold is between 0 DEG C to 8 DEG C.
According to one embodiment of present invention, described processing unit 204 is specifically additionally operable to: at predetermined time intervals, all judges
Whether the temperature of the temperature of described vaporizer and described condenser is abnormal；In the running of described air-conditioner, if it is determined that institute
The number of times of the temperature appearance exception that abnormal number of times and described condenser in the temperature stating vaporizer reaches pre-determined number, then really
Fixed described air-conditioner refrigerating system breaks down.
If the temperature anomaly of vaporizer and the temperature anomaly of condenser is detected once or several times, it is likely due to pass
Sensor fault or air-conditioner fluctuation of service lead to, and therefore pass through in the number of times of temperature anomaly vaporizer is detected and condensation
The number of times of the temperature anomaly of device reaches when making a reservation for many number of times, then judges that air-conditioner refrigerating system breaks down, it is possible to increase sentence
The accuracy of disconnected result.And pass through to judge at predetermined time intervals once it can be ensured that the multiple result judging is not subject to synchronization
Cause specific (as a certain moment air-conditioner fluctuation of service etc.) impact.Wherein, the scheduled time can be 5 minutes.Wherein, exist
In this embodiment, in the temperature of vaporizer and the temperature of condenser, any one occurs extremely, being accordingly to be regarded as appearance once abnormal.
According to one embodiment of present invention, also include: Tip element 206, described for determining in described processing unit
After air-conditioner refrigerating system breaks down, pointed out；And/or described processing unit is additionally operable to, determining described air-conditioner system
After cooling system breaks down, close described compressor.
By being pointed out so that user can take measures on customs clearance (as shut down after determination refrigeration system breaks down
Deng) avoid air-conditioner to work on and produce potential safety hazard.Tip element 206 can be carried by way of sound and/or light
Show.
Fig. 3 shows the structural representation of air-conditioner according to an embodiment of the invention.
As shown in figure 3, air-conditioner 300 according to an embodiment of the invention, comprising: refrigeration system, refrigeration system includes pressing
Contracting machine 302, vaporizer 304 and condenser 306；And the failure detector for air-conditioner refrigerating system shown in Fig. 2
200, the wherein detector unit 202 in failure detector 200 includes temperature sensor, specifically, as shown in figure 3, being arranged on
The temperature sensor 308 on vaporizer 304 surface, for detecting the indoor temperature residing for air-conditioner；It is arranged on vaporizer 304 stream
The temperature sensor 310 at middle part, for detecting the temperature of vaporizer 304；It is arranged on the temperature sensing in the middle part of condenser 306 stream
Device 312, for detecting the temperature of condenser 306.Wherein air-conditioner 300 can be dehumidifier.
Fig. 4 shows the fault detection method for air-conditioner refrigerating system according to another embodiment of the invention
Schematic flow diagram.
As shown in figure 4, the fault detection method for air-conditioner refrigerating system according to another embodiment of the invention,
Including:
Step 402, compressor start.
Step 404, judges whether the run time of compressor reaches n times of specified time, if so, then execution step 406,
I.e. every specified time execution step 406 once it is intended that the time can be 5 minutes.
Step 406, when the run time judging compressor reaches n times of the specified time, reads temperature sensor detection
Indoor temperature t1, evaporator temperature t2 and the condenser temperature t3 arriving.
Step 408, judges < in z, whether arbitrary relational expression meets t1-t2 < x, t3-t1 < y and t3-t2, if so, then executes
Step 410；Otherwise, return to step 404.Wherein, x and y is between 0 DEG C to 4 DEG C, and z is between 0 DEG C to 8 DEG C.
Step 410, < when the arbitrary relational expression in z meets, records once potential event in t1-t2 < x, t3-t1 < y and t3-t2
Barrier, if two relational expressions meet simultaneously, records incipient fault twice, if three relational expressions meet simultaneously, record is dived for three times
In fault.
Step 412, judges whether the incipient fault cumulative number recording reaches pre-determined number, if so, then execution step
414；Otherwise, return to step 404.
Step 414, when the incipient fault cumulative number judging record reaches pre-determined number, judges the refrigeration system of air-conditioner
System breaks down.
Step 416, points out the refrigeration system of air-conditioner to break down, such as display failure code etc., so that at user
Reason or automatic power-off shutdown.
Specifically, as under conditions of 27 DEG C of condition of mark, air-conditioner is in a chiller mode or dehumidification mode is started shooting it is intended that the time is
5 minutes, x value was 4 DEG C, and y value is 4 DEG C, and z value is 8 DEG C, and in normal state, after air-conditioner is stable, indoor temperature t1 is
27 DEG C, temperature t2 of vaporizer is 10 DEG C, and temperature t3 of condenser is 45 DEG C, that is, t1-t2=10 DEG C, t3-t2=35 DEG C, t3-
T1=18 DEG C, if occurring, coolant is revealed completely, choke valve blocking or compressor capacitor be the problems such as damage, and can lead to t1-t2=t3-
0 DEG C of t2=t3-t1 ≈, i.e. t1-t2 ＜ 4, t3-t1 ＜ 4, t3-t2 ＜ 8, add up 3 incipient faults altogether, if pre-determined number is 36
Secondary, then after 1 hour, incipient fault cumulative number reaches 36 times, now judges that the refrigeration system of air-conditioner breaks down, and
Close compressor, shows failure code.
Technical scheme is described in detail above in association with accompanying drawing, the present invention propose a kind of new for air-conditioner
The failure detection schemes of refrigeration system, can accurately detect whether the refrigeration system of air-conditioner breaks down, and improve inspection
The reliability of examining system.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (9)
1. a kind of fault detection method for air-conditioner refrigerating system, described air-conditioner refrigerating system includes compressor, evaporation
Device and condenser are it is characterised in that described fault detection method includes:
Detect the temperature of the indoor temperature, the temperature of described vaporizer and described condenser residing for described air-conditioner；
According to the temperature of described indoor temperature, the temperature of described vaporizer and described condenser judge described vaporizer temperature and
Whether the temperature of described condenser is abnormal, to determine whether described air-conditioner refrigerating system breaks down；
Judge the temperature of the temperature of described vaporizer and described condenser whether abnormal step particularly as follows:
When the difference of described indoor temperature and the temperature of described vaporizer is less than or equal to the first predetermined threshold, judge described steaming
Send out the temperature anomaly of device；
When the temperature of described condenser is less than or equal to the second predetermined threshold with the difference of described indoor temperature, judge described cold
The temperature anomaly of condenser；
When the temperature of described condenser is less than or equal to three predetermined thresholds with the difference of the temperature of described vaporizer, judge institute
State the temperature of vaporizer or the temperature anomaly of described condenser.
2. the fault detection method for air-conditioner refrigerating system according to claim 1 it is characterised in that
Described first predetermined threshold is between 0 DEG C to 4 DEG C；
Described second predetermined threshold is between 0 DEG C to 4 DEG C；
Described 3rd predetermined threshold is between 0 DEG C to 8 DEG C.
3. the fault detection method for air-conditioner refrigerating system according to any one of claim 1 or 2, its feature exists
In, determine step that whether described air-conditioner refrigerating system break down particularly as follows:
At predetermined time intervals, all judge whether the temperature of the temperature of described vaporizer and described condenser is abnormal；
In the running of described air-conditioner, if it is determined that abnormal number of times and described condenser in the temperature of described vaporizer
Temperature abnormal number of times occur reach pre-determined number it is determined that described air-conditioner refrigerating system breaks down.
4. the fault detection method for air-conditioner refrigerating system according to claim 3 is it is characterised in that determining institute
State after air-conditioner refrigerating system breaks down, pointed out and/or closed described compressor.
5. a kind of failure detector for air-conditioner refrigerating system, described air-conditioner refrigerating system includes compressor, evaporation
Device and condenser are it is characterised in that described failure detector includes:
Detector unit, for detecting indoor temperature residing for described air-conditioner, the temperature of described vaporizer and described condenser
Temperature；
Processing unit, for detected according to described detector unit described indoor temperature, the temperature of described vaporizer and described
The temperature of condenser judges whether the temperature of the temperature of described vaporizer and described condenser is abnormal, to determine described air-conditioner system
Whether cooling system breaks down；
When the difference of described indoor temperature and the temperature of described vaporizer is less than or equal to the first predetermined threshold, judge described steaming
Send out the temperature anomaly of device；
When the temperature of described condenser is less than or equal to the second predetermined threshold with the difference of described indoor temperature, judge described cold
The temperature anomaly of condenser；
When the temperature of described condenser is less than or equal to three predetermined thresholds with the difference of the temperature of described vaporizer, judge institute
State the temperature of vaporizer or the temperature anomaly of described condenser.
6. the failure detector for air-conditioner refrigerating system according to claim 5 it is characterised in that
Described first predetermined threshold is between 0 DEG C to 4 DEG C；
Described second predetermined threshold is between 0 DEG C to 4 DEG C；
Described 3rd predetermined threshold is between 0 DEG C to 8 DEG C.
7. the failure detector for air-conditioner refrigerating system according to any one of claim 5 or 6, its feature exists
In described processing unit is specifically additionally operable to:
At predetermined time intervals, all judge whether the temperature of the temperature of described vaporizer and described condenser is abnormal；
In the running of described air-conditioner, if it is determined that abnormal number of times and described condenser in the temperature of described vaporizer
Temperature abnormal number of times occur reach pre-determined number it is determined that described air-conditioner refrigerating system breaks down.
8. the failure detector for air-conditioner refrigerating system according to claim 7 is it is characterised in that also include:
Tip element, for, after described processing unit determines that described air-conditioner refrigerating system breaks down, being pointed out；With/
Or
Described processing unit is additionally operable to, and after determining that described air-conditioner refrigerating system breaks down, closes described compressor.
9. a kind of air-conditioner is it is characterised in that include:
Refrigeration system；And
The failure detector for air-conditioner refrigerating system as any one of claim 5 to 8.
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104655365A (en) * | 2014-12-30 | 2015-05-27 | 海信科龙电器股份有限公司 | Method for detecting refrigerant leakage and air conditioner |
| CN108803367A (en) * | 2015-08-17 | 2018-11-13 | 常州爱上学教育科技有限公司 | The working method of the intelligent temperature control system of intelligent domestic system |
| CN105241018A (en) * | 2015-10-28 | 2016-01-13 | 青岛海尔空调器有限总公司 | Heat exchange fault detection method and device for dehumidification device |
| CN105423506A (en) * | 2015-12-16 | 2016-03-23 | 何岳仁 | Air-conditioning control system and control method thereof |
| CN109539456A (en) * | 2017-09-21 | 2019-03-29 | 奥克斯空调股份有限公司 | A kind of guard method of air conditioner room unit and device |
| CN108709285A (en) * | 2018-07-11 | 2018-10-26 | 北京百度网讯科技有限公司 | Mthods, systems and devices for monitoring room |
| CN109737654B (en) * | 2018-12-11 | 2024-01-23 | 珠海格力电器股份有限公司 | Blocking detection method and unit capable of detecting blocking |
| CN110486918A (en) * | 2019-08-27 | 2019-11-22 | 广东美的暖通设备有限公司 | Detection components, control method and air conditioner for air conditioner |
| CN113587402A (en) * | 2021-06-30 | 2021-11-02 | 珠海拓芯科技有限公司 | Air conditioner control method and air conditioner |
| CN115451622B (en) * | 2022-08-23 | 2024-02-23 | 青岛海尔空调电子有限公司 | Method and device for fault detection, drying system and storage medium |
| CN115307354A (en) * | 2022-08-24 | 2022-11-08 | 合肥美菱物联科技有限公司 | Fault diagnosis method for ice making machine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5440895A (en) * | 1994-01-24 | 1995-08-15 | Copeland Corporation | Heat pump motor optimization and sensor fault detection |
| CN101876474A (en) * | 2010-07-22 | 2010-11-03 | 四川长虹空调有限公司 | Method for automatically detecting lack of refrigerant in air-conditioner |
| CN202883418U (en) * | 2012-09-24 | 2013-04-17 | 宁波奥克斯空调有限公司 | Failure detection device for outdoor fan of air conditioner |
| CN103375874A (en) * | 2012-04-23 | 2013-10-30 | 珠海格力电器股份有限公司 | Air conditioner and refrigerant circulation abnormality protection control method for same |
| CN203455433U (en) * | 2013-08-20 | 2014-02-26 | 广东美的制冷设备有限公司 | Air conditioner fault detection device and air conditioner fault detection system comprising same |
-
2014
- 2014-06-16 CN CN201410268747.5A patent/CN104061655B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5440895A (en) * | 1994-01-24 | 1995-08-15 | Copeland Corporation | Heat pump motor optimization and sensor fault detection |
| CN101876474A (en) * | 2010-07-22 | 2010-11-03 | 四川长虹空调有限公司 | Method for automatically detecting lack of refrigerant in air-conditioner |
| CN103375874A (en) * | 2012-04-23 | 2013-10-30 | 珠海格力电器股份有限公司 | Air conditioner and refrigerant circulation abnormality protection control method for same |
| CN202883418U (en) * | 2012-09-24 | 2013-04-17 | 宁波奥克斯空调有限公司 | Failure detection device for outdoor fan of air conditioner |
| CN203455433U (en) * | 2013-08-20 | 2014-02-26 | 广东美的制冷设备有限公司 | Air conditioner fault detection device and air conditioner fault detection system comprising same |
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