The content of the invention
It is contemplated that at least solving one of technical problem present in prior art or correlation technique.
Therefore, it is an object of the present invention to propose a kind of guard method of air-conditioning.
It is another object of the present invention to the protection device for proposing air-conditioning.
To achieve the above object, a kind of embodiment according to the first aspect of the invention, it is proposed that guard method of air-conditioning,Including：Recording step, in the compressor start refrigeration of the air-conditioning and/or normal refrigerating operaton, records the steaming of the air-conditioningSend out the temperature and the operation power of air-conditioning corresponding with the temperature of the temperature-sensitive bag of device；Calculation procedure, calculates the temperature pre-If the temperature variation in the time period, and power variation of the operation power in the preset time period；Judge stepSuddenly, according to the temperature variation and the power variation judge the air-conditioning outdoor fan whether operation exception；TreatmentStep, in the outdoor fan operation exception, the compressor out of service, and after a preset time lapses, restartingThe compressor.
The guard method of air-conditioning according to an embodiment of the invention, when air-conditioner freezes, if outdoor fan exception, condensationThe pressure of device side can be increased dramatically, and cause the power rise ratio of whole machine very fast, and the refrigeration of indoor can drastically decline, and steamThe difference variation exception of hair device side, therefore, by the work(for judging the temperature variation of vaporizer side and whole machine in preset time periodWhether rate variable quantity is normal, can exactly judge whether outdoor fan is abnormal, if vaporizer side in preset time periodThe power variation of temperature variation and whole machine has very large deviation with normal temperature variation and normal power variation, thenOuter blower fan exception is illustrated, compressor out of service is needed to protect compressor, this is conducive to extending the service life of compressor, whileReduce the potential safety hazard that air-conditioning is present.
According to one embodiment of present invention, the recording step is specifically included：In the compressor start system of the air-conditioningWhen cold, the first temperature of the temperature-sensitive bag of evaporator, and the first operation power during compressor stable operation are recorded；In the skyAfter allocation and transportation row Preset Time, the second temperature of the temperature-sensitive bag of the evaporator, and the second operation power are recorded；It is described to calculate stepSuddenly specifically include：The first temperature difference of the second temperature and first temperature is calculated, and calculates the second operation work(The first difference power that rate runs power with described first；The judgement step is specifically included：According to first difference power and instituteState the first temperature difference judge the air-conditioning outdoor fan whether operation exception.
The guard method of air-conditioning according to an embodiment of the invention, in the compressor start of air-conditioning, due to compressor cylinderTemperature is more long to temperature protection required time by normal temperature, and in the process, if outer blower fan exception, condenser side heat-exchange performanceBe able to can drastically decline, condenser side pressure can be increased dramatically therewith, this will cause compressor horsepower increase ratio normally fast, and then makeCompressor power in preset time period variable quantity than larger, meanwhile, if outer blower fan exception, the refrigeration of indoorIt is more far short of what is expected than normal, the temperature variation exception of the evaporator of indoor in preset time period, therefore, by according to the first work(Rate poor (power variation of the compressor in preset time period) and the first temperature difference (temperature-sensitive of the evaporator in preset time periodThe bag temperature difference), blower fan out can be accurately determined whether abnormal.
According to one embodiment of present invention, according to first difference power and first temperature difference, the sky is judgedThe outdoor fan of tune whether operation exception, specifically include：It is poor less than the first preset temperature in first temperature difference, and described theWhen one difference power presets ratio with the ratio of the described first operation power more than first, it is judged to that the outdoor fan operation is differentOften, otherwise, it is determined that being the outdoor fan normal operation.
The guard method of air-conditioning according to an embodiment of the invention, when the first temperature difference is less than the first preset temperature difference,Illustrate that vaporizer side refrigeration has declined, evaporator exception, when the ratio of the first difference power and the first operation power is more than theDuring one default ratio, illustrate that the power of compressor is drastically raised in preset time period, compressor operating exception, and work as evaporatorWith compressor while exception, while cannot normally run, then illustrates that outer blower fan is abnormal, compressor out of service is needed, to preventThere is overlond running in longer period of time in compressor, and this is conducive to extending the service life of compressor.
According to one embodiment of present invention, the recording step also includes：Start normal, entrance in the outdoor fanAfter operation (normal refrigeration), the 3rd operation of the 3rd temperature and air-conditioning of the temperature-sensitive bag of evaporator described in real time record current timePower, and the 4th temperature and the 4th operation power of prefixed time interval are differed with the current time；The calculation procedureAlso include：Calculate the 4th temperature poor with the second temperature of the 3rd temperature, and it is described 4th operation power with it is describedSecond difference power of the 3rd operation power；The judgement step also includes：According to poor and described second power of the second temperatureDifference judge the air-conditioning outdoor fan whether operation exception.
The guard method of air-conditioning according to an embodiment of the invention, in whole mechanism cold operation, if outer blower motor exception,Machine system occurs big ups and downs, and condenser side heat exchange property can drastically decline, and then causes condenser side pressure drastically to increaseGreatly, compressor horsepower increase ratio is normally fast, the final power for causing compressor in preset time period variable quantity than larger, togetherWhen, if outer blower fan operation exception, although indoor has refrigeration, but more far short of what is expected than normal, and the evaporator of indoor is pre-If the temperature variation in the time period can also occur exception, therefore, by the way that according to the second difference power, (compressor is between Preset TimeEvery interior power variation) and second temperature poor (the evaporator temperature-sensitive bag temperature difference within a preset time interval) can be true exactlyWhether abnormal make outer blower fan.
According to one embodiment of present invention, the air-conditioning is judged according to poor and described second difference power of the second temperatureOutdoor fan whether operation exception, specifically include：It is poor more than the second preset temperature in second temperature difference, and described secondWhen difference power presets ratio with the ratio of the described 3rd operation power more than second, it is judged to the outdoor fan operation exception,Otherwise, it is determined that being the outdoor fan normal operation.
The guard method of air-conditioning according to an embodiment of the invention, when second temperature difference is more than the second preset temperature difference,Illustrate that the difference variation of evaporator is abnormal, evaporator operation exception, when two difference powers are more than with the ratio of the 3rd operation powerDuring the first default ratio, illustrate that the power of compressor is drastically raised in preset time period, compressor operating exception, and when evaporationDevice and compressor cannot normally run simultaneously, then illustrate that outer blower fan is abnormal, compressor out of service be needed, to prevent compressor from existingOccurs overlond running in longer period of time, this is conducive to extending the service life of compressor.
According to one embodiment of present invention, when the number of times that the outdoor fan recurs operation exception is equal to default timeDuring number, the air-conditioning out of service simultaneously points out the air-conditioning to break down.
The guard method of air-conditioning according to an embodiment of the invention, is equal to when detecting blower fan and recurring abnormal number of timesDuring preset times, illustrating outer blower fan to break down, it is necessary to repair could normally run, and at this moment, can be made by pointing out userUser solves the failure problems of blower fan as early as possible, air-conditioning is normally run as early as possible, and this is also beneficial to further improve the use of userExperience.
Embodiment according to a second aspect of the present invention proposes a kind of protection device of air-conditioning, including：Recording unit, describedWhen the compressor start refrigeration of air-conditioning and/or normal refrigerating operaton, record the temperature-sensitive bag of the evaporator of the air-conditioning temperature andThe operation power of air-conditioning corresponding with the temperature；Computing unit, calculates temperature change of the temperature in preset time periodAmount, and power variation of the operation power in the preset time period；Judging unit, according to the temperature variationWith the power variation judge the air-conditioning outdoor fan whether operation exception；Processing unit, in outdoor fan fortuneWhen row is abnormal, the compressor out of service, and after a preset time lapses, restart the compressor.
The protection device of air-conditioning according to an embodiment of the invention, when air-conditioner freezes, if blower fan exception, condenser sidePressure can be increased dramatically, cause the power rise of whole machine than very fast, and the refrigeration of indoor can drastically decline, evaporatorThe difference variation exception of side, therefore, become by the power for judging the temperature variation of vaporizer side and whole machine in preset time periodWhether change amount normal, can exactly judge whether outdoor fan abnormal, if in preset time period vaporizer side temperatureThe power variation of variable quantity and whole machine has very large deviation with normal temperature variation and normal power variation, then illustrateOuter blower fan exception, needs compressor out of service to protect compressor, and this is conducive to extending the service life of compressor, while reducingThe potential safety hazard that air-conditioning is present.
According to one embodiment of present invention, the recording unit specifically for：In the compressor start system of the air-conditioningWhen cold, the first temperature of the temperature-sensitive bag of evaporator, and the first operation power during compressor stable operation are recorded；And instituteAfter stating operation of air conditioner Preset Time, the second temperature of the temperature-sensitive bag of the evaporator, and the second operation power are recorded；The meterCalculate unit specifically for：The first temperature difference of the second temperature and first temperature is calculated, and calculates second fortuneThe first difference power that row power runs power with described first；The judging unit specifically for：According to first difference powerWith first temperature difference judge the air-conditioning outdoor fan whether operation exception.
The protection device of air-conditioning according to an embodiment of the invention, in the compressor start of air-conditioning, due to compressor cylinderTemperature is more long to temperature protection required time by normal temperature, and in the process, if outer blower fan exception, condenser side heat-exchange performanceBe able to can drastically decline, condenser side pressure can be increased dramatically therewith, this will cause compressor horsepower increase ratio normally fast, and then makeCompressor power in preset time period variable quantity than larger, meanwhile, if outer blower fan exception, the refrigeration of indoorIt is more far short of what is expected than normal, the temperature variation exception of the evaporator of indoor in preset time period, therefore, by according to the first work(Rate poor (power variation of the compressor in preset time period) and the first temperature difference (temperature-sensitive of the evaporator in preset time periodThe bag temperature difference), blower fan out can be accurately determined whether abnormal.
According to one embodiment of present invention, the judging unit specifically for：First is less than in first temperature differencePreset temperature is poor, and first difference power and the described first operation power ratio more than the first default ratio when, be judged toThe outdoor fan operation exception, otherwise, it is determined that being the outdoor fan normal operation.
The protection device of air-conditioning according to an embodiment of the invention, when the first temperature difference is less than the first preset temperature difference,Illustrate that vaporizer side refrigeration has declined, evaporator exception, when the ratio of the first difference power and the first operation power is more than theDuring one default ratio, illustrate that the power of compressor is drastically raised in preset time period, compressor operating exception, and work as evaporatorWith compressor while exception, while cannot normally run, then illustrates that outer blower fan is abnormal, compressor out of service is needed, to preventThere is overlond running in longer period of time in compressor, and this is conducive to extending the service life of compressor.
According to one embodiment of present invention, the recording unit is additionally operable to：Start normal, entrance in the outdoor fanAfter operation (normal refrigeration), the 3rd operation of the 3rd temperature and air-conditioning of the temperature-sensitive bag of evaporator described in real time record current timePower, and the 4th temperature and the 4th operation power of prefixed time interval are differed with the current time；The computing unitIt is additionally operable to：Calculate the 4th temperature poor with the second temperature of the 3rd temperature, and it is described 4th operation power with it is describedSecond difference power of the 3rd operation power；The judging unit is additionally operable to：According to poor and described second power of the second temperatureDifference judge the air-conditioning outdoor fan whether operation exception.
The protection device of air-conditioning according to an embodiment of the invention, in whole mechanism cold operation, if outer blower motor exception,Machine system occurs big ups and downs, and condenser side heat exchange property can drastically decline, and then causes condenser side pressure drastically to increaseGreatly, compressor horsepower increase ratio is normally fast, the final power for causing compressor in preset time period variable quantity than larger, togetherWhen, if outer blower fan operation exception, although indoor has refrigeration, but more far short of what is expected than normal, and the evaporator of indoor is pre-If the temperature variation in the time period can also occur exception, therefore, by the way that according to the second difference power, (compressor is between Preset TimeEvery interior power variation) and second temperature poor (the evaporator temperature-sensitive bag temperature difference within a preset time interval) can be true exactlyWhether abnormal make outer blower fan.
According to one embodiment of present invention, the judging unit specifically for：It is more than second in second temperature differencePreset temperature is poor, and second difference power and the described 3rd operation power ratio more than the second default ratio when, be judged toThe outdoor fan operation exception, otherwise, it is determined that being the outdoor fan normal operation.
The protection device of air-conditioning according to an embodiment of the invention, when second temperature difference is more than the second preset temperature difference,Illustrate that the difference variation of evaporator is abnormal, evaporator operation exception, when two difference powers are more than with the ratio of the 3rd operation powerDuring the first default ratio, illustrate that the power of compressor is drastically raised in preset time period, compressor operating exception, and when evaporationDevice and compressor cannot normally run simultaneously, then illustrate that outer blower fan is abnormal, compressor out of service be needed, to prevent compressor from existingOccurs overlond running in longer period of time, this is conducive to extending the service life of compressor.
According to one embodiment of present invention, the processing unit also includes：Statistic unit, counts the outdoor fan and connectsSupervention gives birth to the number of times of operation exception；And the processing unit is additionally operable to, when the outdoor fan recurs operation exceptionWhen number of times is equal to preset times, the air-conditioning out of service simultaneously points out the air-conditioning to break down.
The protection device of air-conditioning according to an embodiment of the invention, is equal to when detecting blower fan and recurring abnormal number of timesDuring preset times, illustrating outer blower fan to break down, it is necessary to repair could normally run, and at this moment, can be made by pointing out userUser solves the failure problems of blower fan as early as possible, air-conditioning is normally run as early as possible, and this is also beneficial to further improve the use of userExperience.
By the present invention, in outdoor fan operation exception, air-conditioning can be made to carry out stoppage protection immediately, this is conducive to prolongingThe life-span of compressor long, and reduce the potential safety hazard of air-conditioner.
Specific embodiment
It is below in conjunction with the accompanying drawings and specific real in order to be more clearly understood that the above objects, features and advantages of the present inventionMode is applied to be further described in detail the present invention.It should be noted that in the case where not conflicting, the implementation of the applicationFeature in example and embodiment can be mutually combined.
Many details are elaborated in the following description in order to fully understand the present invention, but, the present invention may be used alsoImplemented with being different from other modes described here using other, therefore, protection scope of the present invention is not by described belowSpecific embodiment limitation.
Fig. 1 shows the schematic flow sheet of the guard method of air-conditioning according to an embodiment of the invention.
As shown in figure 1, the guard method of air-conditioning according to an embodiment of the invention, including：Recording step 102,When the compressor start refrigeration of the air-conditioning and/or normal refrigerating operaton, the temperature of the temperature-sensitive bag of the evaporator of the air-conditioning is recordedThe operation power of degree and air-conditioning corresponding with the temperature；Calculation procedure 104, calculates temperature of the temperature in preset time periodDegree variable quantity, and power variation of the operation power in the preset time period；Step 106 is judged, according to describedTemperature variation and the power variation judge the air-conditioning outdoor fan whether operation exception；Process step 108, in instituteWhen stating outdoor fan operation exception, the compressor out of service, and after a preset time lapses, restart the compressionMachine.
The guard method of air-conditioning according to an embodiment of the invention, when air-conditioner freezes, if blower fan exception, condenser sidePressure can be increased dramatically, cause the power rise of whole machine than very fast, and the refrigeration of indoor can drastically decline, evaporatorThe difference variation exception of side, therefore, become by the power for judging the temperature variation of vaporizer side and whole machine in preset time periodWhether change amount normal, can exactly judge whether outdoor fan abnormal, if in preset time period vaporizer side temperatureThe power variation of variable quantity and whole machine has very large deviation with normal temperature variation and normal power variation, then illustrateOuter blower fan exception, needs compressor out of service to protect compressor, and this is conducive to extending the service life of compressor, while reducingThe potential safety hazard that air-conditioning is present.
According to one embodiment of present invention, the recording step is specifically included：In the compressor start system of the air-conditioningWhen cold, the first temperature of the temperature-sensitive bag of evaporator, and the first operation power during compressor stable operation are recorded；In the skyAfter allocation and transportation row Preset Time, the second temperature of the temperature-sensitive bag of the evaporator, and the second operation power are recorded；It is described to calculate stepSuddenly specifically include：The first temperature difference of the second temperature and first temperature is calculated, and calculates the second operation work(The first difference power that rate runs power with described first；The judgement step is specifically included：According to first difference power and instituteState the first temperature difference judge the air-conditioning outdoor fan whether operation exception.
The guard method of air-conditioning according to an embodiment of the invention, in the compressor start of air-conditioning, due to compressor cylinderTemperature is more long to temperature protection required time by normal temperature, and in the process, if outer blower fan exception, condenser side heat-exchange performanceBe able to can drastically decline, condenser side pressure can be increased dramatically therewith, this will cause compressor horsepower increase ratio normally fast, and then makeCompressor power in preset time period variable quantity than larger, meanwhile, if outer blower fan exception, the refrigeration of indoorIt is more far short of what is expected than normal, the temperature variation exception of the evaporator of indoor in preset time period, therefore, by according to the first work(Rate poor (power variation of the compressor in preset time period) and the first temperature difference (temperature-sensitive of the evaporator in preset time periodThe bag temperature difference), blower fan out can be accurately determined whether abnormal.
According to one embodiment of present invention, according to first difference power and first temperature difference, the sky is judgedThe outdoor fan of tune whether operation exception, specifically include：It is poor less than the first preset temperature in first temperature difference, and described theWhen one difference power presets ratio with the ratio of the described first operation power more than first, it is judged to that the outdoor fan operation is differentOften, otherwise, it is determined that being the outdoor fan normal operation.
The guard method of air-conditioning according to an embodiment of the invention, when the first temperature difference is less than the first preset temperature difference,Illustrate that vaporizer side refrigeration has declined, evaporator exception, when the ratio of the first difference power and the first operation power is more than theDuring one default ratio, illustrate that the power of compressor is drastically raised in preset time period, compressor operating exception, and work as evaporatorWith compressor while exception, while cannot normally run, then illustrates that outer blower fan is abnormal, compressor out of service is needed, to preventThere is overlond running in longer period of time in compressor, and this is conducive to extending the service life of compressor.
According to one embodiment of present invention, the recording step also includes：Start normal, entrance in the outdoor fanAfter operation (normal refrigeration), the 3rd operation of the 3rd temperature and air-conditioning of the temperature-sensitive bag of evaporator described in real time record current timePower, and the 4th temperature and the 4th operation power of prefixed time interval are differed with the current time；The calculation procedureAlso include：Calculate the 4th temperature poor with the second temperature of the 3rd temperature, and it is described 4th operation power with it is describedSecond difference power of the 3rd operation power；The judgement step also includes：According to poor and described second power of the second temperatureDifference judge the air-conditioning outdoor fan whether operation exception.
The guard method of air-conditioning according to an embodiment of the invention, in whole mechanism cold operation, if outer blower motor exception,Machine system occurs big ups and downs, and condenser side heat exchange property can drastically decline, and then causes condenser side pressure drastically to increaseGreatly, compressor horsepower increase ratio is normally fast, the final power for causing compressor in preset time period variable quantity than larger, togetherWhen, if outer blower fan operation exception, although indoor has refrigeration, but more far short of what is expected than normal, and the evaporator of indoor is pre-If the temperature variation in the time period can also occur exception, therefore, by the way that according to the second difference power, (compressor is between Preset TimeEvery interior power variation) and second temperature poor (the evaporator temperature-sensitive bag temperature difference within a preset time interval) can be true exactlyWhether abnormal make outer blower fan.
According to one embodiment of present invention, the air-conditioning is judged according to poor and described second difference power of the second temperatureOutdoor fan whether operation exception, specifically include：It is poor more than the second preset temperature in second temperature difference, and described secondWhen difference power presets ratio with the ratio of the described 3rd operation power more than second, it is judged to the outdoor fan operation exception,Otherwise, it is determined that being the outdoor fan normal operation.
The guard method of air-conditioning according to an embodiment of the invention, when second temperature difference is more than the second preset temperature difference,Illustrate that the difference variation of evaporator is abnormal, evaporator operation exception, when two difference powers are more than with the ratio of the 3rd operation powerDuring the first default ratio, illustrate that the power of compressor is drastically raised in preset time period, compressor operating exception, and when evaporationDevice and compressor cannot normally run simultaneously, then illustrate that outer blower fan is abnormal, compressor out of service be needed, to prevent compressor from existingOccurs overlond running in longer period of time, this is conducive to extending the service life of compressor.
According to one embodiment of present invention, when the number of times that the outdoor fan recurs operation exception is equal to default timeDuring number, the air-conditioning out of service simultaneously points out the air-conditioning to break down.
The guard method of air-conditioning according to an embodiment of the invention, is equal to when detecting blower fan and recurring abnormal number of timesDuring preset times, illustrating outer blower fan to break down, it is necessary to repair could normally run, and at this moment, can be made by pointing out userUser solves the failure problems of blower fan as early as possible, air-conditioning is normally run as early as possible, and this is also beneficial to further improve the use of userExperience.
Fig. 2 shows the schematic flow sheet of the guard method of air-conditioning according to another embodiment of the invention.
As shown in Fig. 2 the guard method of air-conditioning according to another embodiment of the invention, including：
Step 202, in compressor start, detecting system is started into outer blower fan, checks and record vaporizer side temperature-sensitiveBag temperature T1.
Step 204, after compressor operating time m1, detects whole acc power P1.
Step 206, after whole machine runs m2 minutes, detects and records vaporizer side temperature-sensitive bag temperature T2 and whole acc powerP2。
Step 208, judges whether (P2-P1)/P1 is more than K1 and whether T2-T1 is less than L1, if it is judged that being (P2-P1)/P1>K1 and T2-T1<L1, then illustrate outer blower fan exception, performs step 216；Otherwise, then illustrate that outer blower fan can normal workMake, perform step 210.
Step 210, during compressor start, such as (P2-P1)/P1≤K1 and/or T2-T1 >=L1 then illustrates exogenous windMachine is during compressor start and without exception, at this moment, exits outer blower fan and starts detecting system, and enter operation detecting system.
Step 212, machine system detects vaporizer side temperature-sensitive bag temperature Tn and whole machine work(when operation detecting system is enteredTemperature-sensitive bag temperature Tt after rate Pn, and t seconds, whole acc power Pt, and judge (Pt-Pn)/Pn whether more than K2 and (Tt-Tn)Whether it is more than L2, and is (Pt-Pn)/Pn in judged result>K2 and (Tt-Tn)>During L2, step 216 is performed；Otherwise, performStep 214.
Step 214, when judged result is (Pt-Pn)/Pn≤K2 and/or (Tt-Tn)≤L2, illustrates that outer blower fan has no outNow abnormal, control compressor normally runs.
Step 216, when outer blower fan is abnormal, stoppage protection is carried out to compressor.
Fig. 3 shows the structural representation of the protection device of air-conditioning according to an embodiment of the invention.
As shown in figure 3, the protection device 300 of air-conditioning according to an embodiment of the invention, including：Recording unit 302,When the compressor start refrigeration of the air-conditioning and/or normal refrigerating operaton, the temperature of the temperature-sensitive bag of the evaporator of the air-conditioning is recordedThe operation power of degree and air-conditioning corresponding with the temperature；Computing unit 304, calculates temperature of the temperature in preset time periodDegree variable quantity, and power variation of the operation power in the preset time period；Judging unit 306, according to describedTemperature variation and the power variation judge the air-conditioning outdoor fan whether operation exception；Processing unit 308, in instituteWhen stating outdoor fan operation exception, the compressor out of service, and after a preset time lapses, restart the compressionMachine.
The protection device 300 of air-conditioning, when air-conditioner freezes, if blower fan exception, condenses according to an embodiment of the inventionThe pressure of device side can be increased dramatically, and cause the power rise ratio of whole machine very fast, and the refrigeration of indoor can drastically decline, and steamThe difference variation exception of hair device side, therefore, by the work(for judging the temperature variation of vaporizer side and whole machine in preset time periodWhether rate variable quantity is normal, can exactly judge whether outdoor fan is abnormal, if vaporizer side in preset time periodThe power variation of temperature variation and whole machine has very large deviation with normal temperature variation and normal power variation, thenOuter blower fan exception is illustrated, compressor out of service is needed to protect compressor, this is conducive to extending the service life of compressor, whileReduce the potential safety hazard that air-conditioning is present.
According to one embodiment of present invention, the recording unit 302 specifically for：In the compressor start of the air-conditioningDuring refrigeration, the first temperature of the temperature-sensitive bag of evaporator, and the first operation power during compressor stable operation are recorded；AndAfter the operation of air conditioner Preset Time, the second temperature of the temperature-sensitive bag of the evaporator, and the second operation power are recorded；It is describedComputing unit 304 specifically for：Calculate the first temperature difference of the second temperature and first temperature, and calculate described theThe first difference power that two operation power run power with described first；The judging unit 306 specifically for：According to described firstDifference power and first temperature difference judge the air-conditioning outdoor fan whether operation exception.
The protection device 300 of air-conditioning according to an embodiment of the invention, in the compressor start of air-conditioning, due to compressorCenter housing temperature is more long to temperature protection required time by normal temperature, and in the process, if outer blower fan exception, condenser side heat exchangePerformance can drastically decline, and condenser side pressure can be increased dramatically therewith, and this will cause compressor horsepower increase ratio normally fast, and thenSo that the power of compressor in preset time period variable quantity than larger, meanwhile, if outer blower fan exception, the refrigeration effect of indoorFruit than normally far short of what is expected, the temperature variation exception of the evaporator of indoor in preset time period, therefore, by according to firstDifference power (power variation of the compressor in preset time period) and (sense of the evaporator in preset time period of the first temperature differenceThe thermometer bulb temperature difference), blower fan out can be accurately determined whether abnormal.
According to one embodiment of present invention, the judging unit 306 specifically for：In first temperature difference less than theOne preset temperature is poor, and first difference power and the described first operation power ratio more than the first default ratio when, judgeIt is the outdoor fan operation exception, otherwise, it is determined that being the outdoor fan normal operation.
The protection device 300 of air-conditioning, poor less than the first preset temperature in the first temperature difference according to an embodiment of the inventionWhen, illustrate that vaporizer side refrigeration has declined, evaporator exception, when the first difference power is more than with the ratio of the first operation powerDuring the first default ratio, illustrate that the power of compressor is drastically raised in preset time period, compressor operating exception, and when evaporationDevice and compressor exception simultaneously, while cannot normally run, then illustrate that outer blower fan is abnormal, need compressor out of service, in caseOnly there is overlond running in longer period of time in compressor, and this is conducive to extending the service life of compressor.
According to one embodiment of present invention, the recording unit 302 is additionally operable to：Start normally in the outdoor fan,(normal refrigeration), the 3rd temperature of the temperature-sensitive bag of evaporator described in real time record current time and the 3rd of air-conditioning the after into operationOperation power, and the 4th temperature and the 4th operation power of prefixed time interval are differed with the current time；The calculatingUnit 304 is additionally operable to：Calculate the 4th temperature poor with the second temperature of the 3rd temperature, and the 4th operation powerWith the second difference power of the described 3rd operation power；The judging unit 306 is additionally operable to：It is poor and described according to the second temperatureSecond difference power judge the air-conditioning outdoor fan whether operation exception.
The protection device 300 of air-conditioning according to an embodiment of the invention, in whole mechanism cold operation, if outer blower motor is differentOften, machine system occurs big ups and downs, and condenser side heat exchange property can drastically decline, and then cause condenser side pressure drasticallyIncrease, compressor horsepower increase ratio is normally fast, the final power for causing compressor in preset time period variable quantity than larger, togetherWhen, if outer blower fan operation exception, although indoor has refrigeration, but more far short of what is expected than normal, and the evaporator of indoor is pre-If the temperature variation in the time period can also occur exception, therefore, by the way that according to the second difference power, (compressor is between Preset TimeEvery interior power variation) and second temperature poor (the evaporator temperature-sensitive bag temperature difference within a preset time interval) can be true exactlyWhether abnormal make outer blower fan.
According to one embodiment of present invention, the judging unit 306 specifically for：In second temperature difference more than theTwo preset temperatures are poor, and second difference power and the described 3rd operation power ratio more than the second default ratio when, judgeIt is the outdoor fan operation exception, otherwise, it is determined that being the outdoor fan normal operation.
The protection device 300 of air-conditioning, poor more than the second preset temperature in second temperature difference according to an embodiment of the inventionWhen, illustrate that the difference variation of evaporator is abnormal, evaporator operation exception, when two difference powers are big with the ratio of the 3rd operation powerWhen the first default ratio, illustrate that the power of compressor is drastically raised in preset time period, compressor operating exception, and when steamingHair device and compressor cannot normally run simultaneously, then illustrate that outer blower fan is abnormal, compressor out of service be needed, to prevent compressorOccurs overlond running in longer period of time, this is conducive to extending the service life of compressor.
According to one embodiment of present invention, the processing unit 308 also includes：Statistic unit 3082, counts the roomOuter blower fan recurs the number of times of operation exception；And the processing unit 308 is additionally operable to, when the outdoor fan is recurredWhen the number of times of operation exception is equal to preset times, the air-conditioning out of service simultaneously points out the air-conditioning to break down.
The protection device 300 of air-conditioning, abnormal number of times is recurred when blower fan is detected according to an embodiment of the inventionDuring equal to preset times, illustrating outer blower fan to break down, it is necessary to repair could normally run, at this moment, by pointing out the user canSo that user solves the failure problems of blower fan as early as possible, air-conditioning is set normally to run as early as possible, this is also beneficial to further improve user'sExperience.
Technical scheme is described in detail above in association with accompanying drawing, by technical scheme, in outdoor windDuring machine operation exception, air-conditioning can be made to carry out stoppage protection immediately, this is conducive to extending the life-span of compressor, and reduces air-conditionerPotential safety hazard.
The preferred embodiments of the present invention are the foregoing is only, is not intended to limit the invention, for the skill of this areaFor art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repairChange, equivalent, improvement etc., should be included within the scope of the present invention.