CN103375874A - Air conditioner and refrigerant circulation abnormality protection control method for same - Google Patents
Air conditioner and refrigerant circulation abnormality protection control method for same Download PDFInfo
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- CN103375874A CN103375874A CN2012101212906A CN201210121290A CN103375874A CN 103375874 A CN103375874 A CN 103375874A CN 2012101212906 A CN2012101212906 A CN 2012101212906A CN 201210121290 A CN201210121290 A CN 201210121290A CN 103375874 A CN103375874 A CN 103375874A
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Abstract
The invention provides an air conditioner and a refrigerant circulation abnormality protection control method for the same. Under the condition of refrigerant circulation abnormalities caused by closing of a shut-off valve of the air conditioner, a controller protects a compressor timely to avoid undesirable operation and frequent on-off operation, various components of the air conditioner are protected against damage, and the reliability performance is improved. A refrigerant circulation abnormality protection control device of the air conditioner comprises a sampling module, a data processing module, an execution module and an output display module; once the data processing module determines that refrigerant circulation has abnormal faults, the execution module controls the air conditioner to conduct protective shutdown after receiving instructions of the data processing module; whether protective shutdown of the air conditioner occurs continuously for n times is judged, if protective shutdown of the air conditioner occurs continuously for n times, the execution module controls the air conditioner to be unable to resume operation automatically, and the operation can only be resumed through reenergizing or remote-control shutdown and starting-up; the output display module receives instructions of the data processing module or the execution module and controls a display device of an indoor unit of the air conditioner to display refrigerant circulation abnormality fault codes.
Description
Technical field
The present invention relates to air-conditioner control technology field, relate in particular to the refrigerant circulation abnormal protection control method of air-conditioner and air-conditioner.
Background technology
At present; air-conditioner is in after sale state and user's use procedure; for the first time operation after particularly air-conditioning is installed; exist air-conditioner stop valve to close situation about not being opened always; running is undesired after causing starting of air conditioner; regular protection is shut down, and long-term bad operation will cause the damage of components such as compressor.
And in the prior art, still not for the situation of above-mentioned generation, the relevant safeguard measure of formulation, and show the method for fault; In case this fault produces, user's identification and after-sales service personnel investigate equal inconvenience.
Summary of the invention
The object of the present invention is to provide the refrigerant circulation abnormal protection control method of a kind of air-conditioner and air-conditioner; when occuring, air-conditioner stop valve closes when causing the unusual situation of refrigerant circulation; can in time protect compressor to avoid bad operation and frequent start-stop operation; each parts of protection air-conditioner are not damaged, and have improved unfailing performance.
The present invention is achieved through the following technical solutions:
Air-conditioner includes control system; Described control system includes refrigerant circulation abnormal protection control device;
Described refrigerant circulation abnormal protection control device includes:
Sampling module in order to sampling in indoor heat exchanger Guan Wen, outdoor heat exchanger Guan Wen, indoor environment temperature, outside environment temperature and the compressor operating frequency, and transmits sampled signal;
The duration detection module is in order to detect the time of described air-conditioner begin column;
Data processing module in order to receiving the sampled signal of sampling module transmission, and is judged sampled signal, makes the instruction that refrigerant circulation has abnormal failure;
Executive Module, in order to the instruction of receive data processing module, the control air-conditioner satisfies refrigerant circulation and protects shutdown when unusual.
Described duration detection module comprises:
The first duration detection module is in order to begin described air-conditioner to freeze or the time t1 of the operation that dehumidifies detects;
The second duration detection module, the time t2 that begins heating operation in order to described air-conditioner detects.
Described sampling module comprises:
The first sampling module is in order to sample to the indoor heat exchanger tube wall temperature;
The second sampling module is in order to sample to the outdoor heat exchanger tube wall temperature;
The 3rd sampling module is in order to sample to the outside environment temperature;
The 4th sampling module is in order to sample to the indoor environment temperature;
The 5th sampling module is in order to sample to the compressor operating frequency.
Described data processing module comprises:
The first data processing module receives the sampled signal of sampling module transmission in order to freeze at described air-conditioner or to dehumidify, and sampled signal is judged when moving, make the instruction that refrigerant circulation has abnormal failure;
The second data processing module in order to receiving the sampled signal of sampling module transmission when the operation of described air conditioner heat-production, and is judged sampled signal, makes the instruction that refrigerant circulation has abnormal failure.
Described the first data processing module comprises:
The first computing module is in order to judge that described air-conditioner begins to freeze or the magnitude relationship of compressor operating frequency and low frequency dwell point frequency during the time t1 of the operation that dehumidifies;
The second computing module is in order to judge that when described air-conditioner begins to freeze or dehumidify operation indoor heat exchanger tube wall temperature and described air-conditioner begin to freeze or the difference of indoor heat exchanger tube wall temperature and the magnitude relationship of the first preset temperature when dehumidifying the time t1 that moves;
The 3rd computing module, in order to judge described air-conditioner begin to freeze or during the time t1 of the operation that dehumidify indoor environment temperature and described air-conditioner begin to freeze or the difference of indoor heat exchanger tube wall temperature and the magnitude relationship of the first preset temperature when dehumidifying the time t1 that moves;
The 4th computing module, in order to judge described air-conditioner begin to freeze or during the time t1 of the operation that dehumidify outdoor heat exchanger tube wall temperature and described air-conditioner begin to freeze or dehumidify the difference of outdoor heat exchanger tube wall temperature and the magnitude relationship of the first preset temperature when moving;
The 5th computing module, before judging that described air-conditioner begins refrigeration or dehumidifying operation, the relation of outside environment temperature and the second preset temperature and the 3rd preset temperature.
Described the second data processing module comprises:
The 6th computing module, the magnitude relationship of compressor operating frequency and low frequency dwell point frequency when judging that described air-conditioner begins the time t2 of heating operation;
The 7th computing module, the difference of indoor heat exchanger tube wall temperature and the magnitude relationship of the 4th preset temperature when judging that indoor heat exchanger tube wall temperature and air-conditioner begin heating operation when described air-conditioner begins the time t2 of heating operation;
The 8th computing module, the difference of indoor environment temperature and the magnitude relationship of the 4th preset temperature when judging that indoor heat exchanger tube wall temperature and air-conditioner begin heating operation when described air-conditioner begins the time t2 of heating operation;
The 9th computing module, in order to judge air-conditioner begins heating operation to described air-conditioner from the beginning heating operation time t2 during this period of time the difference of outdoor heat exchanger tube wall temperature and the magnitude relationship of the 4th preset temperature when the maximum of outdoor heat exchanger tube wall temperature and time t2 that described air-conditioner begins heating operation;
The tenth computing module, before judging that described air-conditioner begins heating operation, outside environment temperature and the 5th preset temperature relation.
Described Executive Module comprises:
The first computing module, the second computing module, the 3rd computing module, the 4th computing module, the 5th computing module are all judged when satisfying condition in the first data processing module, the first Executive Module that execute protection is shut down.
Described Executive Module comprises:
The 6th computing module, the 7th computing module, the 8th computing module, the 9th computing module, the tenth computing module are all judged when satisfying condition in the second data processing module, the second Executive Module that execute protection is shut down.
Described data processing module also comprises:
Carry out the 3rd data processing module of accumulative total in order to the number of times of described data processing module being made the instruction that refrigerant circulation has abnormal failure
Described Executive Module also comprises:
Reach when presetting number of times in order to cumulative number, air-conditioner is carried out the 3rd Executive Module of shutting down and can not automatically resume operation.
Described refrigerant circulation abnormal protection control device also includes: the output display module, and in order to receive the instruction of described the 3rd data processing module, control air conditioner room unit display unit shows refrigerant circulation abnormal failure code; Described output display module and the electrical connection of indoor set display unit.
A kind of refrigerant circulation abnormal protection control method of air-conditioner is provided according to a further aspect in the invention.
Control method according to the present invention comprises:
To sampling in indoor heat exchanger Guan Wen, outdoor heat exchanger Guan Wen, indoor environment temperature, outside environment temperature and the compressor operating frequency, and sampled signal is transmitted;
The time that described air-conditioner brings into operation is detected;
Receive sampled signal, and sampled signal is judged, make the instruction that refrigerant circulation has abnormal failure;
Receive instruction, control described air-conditioner and satisfy refrigerant circulation and protect shutdown when unusual.
The time that described air-conditioner is brought into operation is detected and comprises:
Air-conditioner is begun to freeze or the time t1 of the operation that dehumidifies detects;
The time t2 that air-conditioner is begun heating operation detects.
Receive the sampled signal of sampling module transmission, and sampled signal judged, make the instruction that refrigerant circulation has abnormal failure and comprise:
Receive the sampled signal of sampling module transmission during to air-conditioner refrigeration or dehumidifying operation, and sampled signal is judged, make the instruction that refrigerant circulation has abnormal failure;
Receive the sampled signal of sampling module transmission when air conditioner heat-production is moved, and sampled signal is judged, make the instruction that refrigerant circulation has abnormal failure.
Receive the sampled signal of sampling module transmission when air-conditioner refrigeration or dehumidifying operation, and sampled signal judged, make the instruction that refrigerant circulation has abnormal failure and comprise:
Judge that described air-conditioner begins to freeze or the magnitude relationship of compressor operating frequency and low frequency dwell point frequency during the time t1 of the operation that dehumidifies;
Judgement indoor heat exchanger tube wall temperature and described air-conditioner when described air-conditioner begins to freeze or dehumidify operation begin to freeze or the difference of indoor heat exchanger tube wall temperature and the magnitude relationship of the first preset temperature when dehumidifying the time t1 that moves;
Judgement described air-conditioner begin to freeze or during the time t1 of the operation that dehumidifies indoor environment temperature and described air-conditioner begin to freeze or the difference of indoor heat exchanger tube wall temperature and the magnitude relationship of the first preset temperature when dehumidifying the time t1 that moves;
Judgement described air-conditioner begin to freeze or during the time t1 of the operation that dehumidifies outdoor heat exchanger tube wall temperature and described air-conditioner begin to freeze or dehumidify the difference of outdoor heat exchanger tube wall temperature and the magnitude relationship of the first preset temperature when moving;
Before judging that described air-conditioner begins refrigeration or dehumidifying operation, the relation of outside environment temperature and the second preset temperature and the 3rd preset temperature.
Judge all when satisfying condition that when described judgement execute protection is shut down.
Described processing module is made the number of times that refrigerant circulation has an instruction of abnormal failure to add up.
Make number of times that refrigerant circulation has an instruction of abnormal failure when reaching pre-determined number when described, air-conditioner is carried out and is shut down and can not automatically resume operation.
Described air-conditioner is carried out and is shut down and can not automatically resume operation the time, the air conditioner room unit display unit shows refrigerant circulation abnormal failure code.
Receive the sampled signal of sampling module transmission when air conditioner heat-production is moved, and sampled signal judged, make the instruction that refrigerant circulation has abnormal failure and comprise:
Judge the magnitude relationship of compressor operating frequency and low frequency dwell point frequency when described air-conditioner begins the time t2 of heating operation;
The difference of indoor heat exchanger tube wall temperature and the magnitude relationship of the 4th preset temperature when indoor heat exchanger tube wall temperature and air-conditioner began heating operation when judgement began the time t2 of heating operation at described air-conditioner;
The difference of indoor environment temperature and the magnitude relationship of the 4th preset temperature when indoor heat exchanger tube wall temperature and air-conditioner began heating operation when judgement began the time t2 of heating operation at described air-conditioner;
Judgement time t2 that air-conditioner begins heating operation from the beginning heating operation to described air-conditioner during this period of time the difference of outdoor heat exchanger tube wall temperature and the magnitude relationship of the 4th preset temperature when the maximum of outdoor heat exchanger tube wall temperature and time t2 that described air-conditioner begins heating operation;
Before judging that described air-conditioner begins heating operation, outside environment temperature and the 5th preset temperature relation.
Judge all when satisfying condition that when described judgement execute protection is shut down.
Described processing module is made the number of times that refrigerant circulation has an instruction of abnormal failure to add up.
Make number of times that refrigerant circulation has an instruction of abnormal failure when reaching pre-determined number when described, air-conditioner is carried out and is shut down and can not automatically resume operation.
Described air-conditioner is carried out and is shut down and can not automatically resume operation the time, the air conditioner room unit display unit shows refrigerant circulation abnormal failure code.
Beneficial effect of the present invention is as follows:
The refrigerant circulation abnormal protection control method of air-conditioner of the present invention and air-conditioner is because the refrigerant circulation abnormal protection control device of air-conditioner includes: sampling module, data processing module, Executive Module, output display module; In a single day data processing module judges that refrigerant circulation has abnormal failure, and after the instruction of Executive Module receive data processing module, the protection of control air-conditioner is shut down; And judge whether air-conditioner n protection occur continuously and shut down, and in this way, then Executive Module control air-conditioner can not resume operation automatically, need to re-power or remote-control closedown is started shooting and could be recovered; The output display module, the instruction of receive data processing module or Executive Module, control air conditioner room unit display unit shows refrigerant circulation abnormal failure code.Guaranteed the air-conditioner part reliability, prevent in the bad operation that start appearance in the situation occurs not open such as air-conditioner stop valve etc., prevent that bad operation from damaging the important core components and parts of air-conditioner, guarantee to be used for being easy to identify fault, and the convenient for maintaining personnel investigate fault simultaneously.
Description of drawings
The schematic flow sheet of the refrigerant circulation abnormal protection control method when Fig. 1 is air-conditioner refrigeration of the present invention or dehumidifying operation.
The schematic flow sheet of the refrigerant circulation abnormal protection control method when Fig. 2 is air conditioner heat-production operation of the present invention.
The specific embodiment
When moving for the first time after air-conditioning is installed, the situation that exists air-conditioner stop valve to close not open causes the starting of air conditioner running undesired, and regular protection is shut down, and long-term bad operation causes the damage of components such as compressor.In order to address the above problem, the invention provides a kind of scheme, its specific embodiment is as follows:
As shown in Figure 1, the refrigerant circulation abnormal protection control method when air-conditioner of the present invention refrigeration or dehumidifying operation is, air-conditioner powers on first, and during compressor start, the first sampling module in the sampling module, the second sampling module and the 3rd sampling module are respectively to T
Inner tube, i.e. indoor heat exchanger tube wall temperature, T
Outer tube, i.e. outdoor heat exchanger tube wall temperature, T
Outer shroud, namely the outside environment temperature is sampled, and obtains sampled data T
0, T1, T
2, and sampled signal is transferred to data processing module;
After detecting air-conditioner refrigeration or dehumidifying operation 1min by the first duration detection module, the first sampling module in the sampling module, the second sampling module, the 3rd sampling module, the 4th sampling module and the 5th sampling module are respectively to T
Inner tube, T
Outer tube, T
Outer shroud, T
Interior ringAnd the compressor operating frequency f samples, and obtains sampled data T
0', T1 ', T
2', T
3' and the compressor operating frequency f
1And sampled signal is transferred to data processing module; Need to prove that air-conditioner refrigeration or dehumidifying are not limited to 1min running time, for 1min to 3min gets final product.
The first computing module in the first data processing module is to f
1Judge with the magnitude relationship of low frequency dwell point frequency.Low frequency dwell point frequency is the Frequency point of first stop in the raising frequency process, generally is set as 30-50Hz, and preferably, low frequency dwell point frequency is 40Hz.
The second computing module is to T
0With T
0' difference and the magnitude relationship of the first preset temperature judge that wherein the first preset temperature is 1 ℃-5 ℃, preferably, the first preset temperature is 3 ℃.
The 3rd computing module is to T
3' and T
0' difference and the magnitude relationship of the first preset temperature judge that wherein the first preset temperature is 1 ℃-5 ℃, preferably, the first preset temperature is 3 ℃.
The 4th computing module judges that with the difference of T1 and the magnitude relationship of the first preset temperature wherein the first preset temperature is 1 ℃-5 ℃ to T1 ', and preferably, the first preset temperature is 3 ℃.
The 5th computing module, before judging that described air-conditioner begins refrigeration or dehumidifying operation, T
2Judge with the magnitude relationship of the second preset temperature and the 3rd preset temperature.Wherein the second preset temperature is 5 ℃, and the 3rd preset temperature is 43 ℃.
Judge simultaneously when above-mentioned computing module and to satisfy f
1Be not less than 40Hz, T
0With T
0' difference be not more than 3 ℃, T
3' and T
0' difference be not more than 3 ℃, the difference of T1 ' and T1 is not more than 3 ℃, T
2Be not less than 5 ℃ and when being not more than 43 ℃, the protection of the first Executive Module control air-conditioner is shut down.
Automatically start after shutting down 3min-5min, restart simultaneously to carry out the data sampling second time.Preferably, be 3min downtime.
If appearring in air-conditioner, protection do not shut down, then normally operation; Shut down if protection appears in air-conditioner again, protection occurs 2 times and shut down namely continuously, then can not automatically resume operation, need to re-power or remote-control closedown is started shooting and could be recovered.The output display module, after the instruction of receive data processing module or Executive Module, control air conditioner room unit display unit shows refrigerant circulation abnormal failure code F0.Need to prove that number of times is shut down in described protection, those skilled in the art can select according to the actual requirements, are not limited to 2 times, generally can select 1 time, 2 times or 3 times.
As shown in Figure 2; refrigerant circulation abnormal protection control method during air conditioner heat-production operation of the present invention is; air-conditioner powers on first, and during compressor start, the first sampling module in the sampling module, the second sampling module, the 3rd sampling module and the 4th sampling module are respectively to T
Inner tube, i.e. indoor heat exchanger tube wall temperature, T
Outer tube, i.e. outdoor heat exchanger tube wall temperature, T
Outer shroud, i.e. outside environment temperature and T
Interior ring, namely the indoor environment temperature is sampled, and obtains sampled data T
4, T
5, T
6, T
7, and sampled signal is transferred to data processing module; Need to prove that this moment, the second sampling module was to T
Outer tube, i.e. the sampling of outdoor heat exchanger tube wall temperature continues.
After detecting air-conditioner refrigeration or dehumidifying operation 3min by the second duration detection module, the first sampling module in the sampling module, the second sampling module, the 3rd sampling module, the 4th sampling module and the 5th sampling module are respectively to T
Inner tube, T
Outer tube, T
Outer shroud, T
Interior ringAnd the compressor operating frequency f samples, and obtains sampled data T
4', T
5', T
6', T
7' and the compressor operating frequency f
2And sampled signal is transferred to data processing module; Simultaneously the second sampling module will this section in running time all to T
Outer tube, namely the sampled signal of outdoor heat exchanger tube wall temperature is transferred to data processing module.Need to prove that air conditioner heat-production is not limited to 3min running time, is no less than 3min and gets final product.
The 6th computing module in the second data processing module is to f
2Judge with the magnitude relationship of low frequency dwell point frequency.Low frequency dwell point frequency is the Frequency point of first stop in the raising frequency process, generally is set as 30-50Hz, and preferably, low frequency dwell point frequency is 40Hz.
The 7th computing module is to T
4' and T
4Difference and the magnitude relationship of the 4th preset temperature judge that wherein the 4th preset temperature is 1 ℃-5 ℃, preferably, the 4th preset temperature is 5 ℃.
The 8th computing module is to T
4' and T
7Difference and the magnitude relationship of the first preset temperature judge that wherein the 4th preset temperature is 1 ℃-5 ℃, preferably, the 4th preset temperature is 5 ℃.
The 9th computing module is to all T in the 3min of heating operation
Outer tubeIt is the maximum of T of outdoor heat exchanger tube wall temperature
5maxWith T
5' difference and the magnitude relationship of the 4th preset temperature judge that wherein the 4th preset temperature is 1 ℃-5 ℃, preferably, the 4th preset temperature is 5 ℃.
The tenth computing module, before judging that described air-conditioner begins heating operation, T
6Judge with the magnitude relationship of the 5th preset temperature.Wherein the 5th preset temperature is 5 ℃.
Judge simultaneously when above-mentioned computing module and to satisfy f
2Be not less than 40Hz, T
4' and T
4Difference be not more than 5 ℃, T
4' and T
7Difference be not more than 5 ℃, T
5maxWith T
5' difference be not more than 5 ℃, T
6When being not less than 5 ℃, the protection of the second Executive Module control air-conditioner is shut down.
Automatically start after shutting down 3min-5min, restart simultaneously to carry out the data sampling second time.Preferably, be 3min downtime.
If appearring in air-conditioner, protection do not shut down, then normally operation; Shut down if protection appears in air-conditioner again, protection occurs 2 times and shut down namely continuously, then can not automatically resume operation, need to re-power or remote-control closedown is started shooting and could be recovered.The output display module, after the instruction of receive data processing module or Executive Module, control air conditioner room unit display unit shows refrigerant circulation abnormal failure code F0.Need to prove that number of times is shut down in described protection, those skilled in the art can select according to the actual requirements, are not limited to 2 times, generally can select 1 time, 2 times or 3 times.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (21)
1. air-conditioner includes control system; It is characterized in that described control system includes refrigerant circulation abnormal protection control device;
Described refrigerant circulation abnormal protection control device includes:
Sampling module in order to sampling in indoor heat exchanger Guan Wen, outdoor heat exchanger Guan Wen, indoor environment temperature, outside environment temperature and the compressor operating frequency, and transmits sampled signal;
The duration detection module detected in order to the time that described air-conditioner is brought into operation;
Data processing module in order to receiving the sampled signal of sampling module transmission, and is judged sampled signal, makes the instruction that refrigerant circulation has abnormal failure;
Executive Module, in order to the instruction of receive data processing module, the control air-conditioner is protected shutdown.
2. air-conditioner according to claim 1 is characterized in that, described duration detection module comprises:
The first duration detection module is in order to begin described air-conditioner to freeze or the time t1 of the operation that dehumidifies detects;
The second duration detection module, the time t2 that begins heating operation in order to described air-conditioner detects.
3. air-conditioner according to claim 2 is characterized in that, described sampling module comprises:
The first sampling module is in order to sample to the indoor heat exchanger tube wall temperature;
The second sampling module is in order to sample to the outdoor heat exchanger tube wall temperature;
The 3rd sampling module is in order to sample to the outside environment temperature;
The 4th sampling module is in order to sample to the indoor environment temperature;
The 5th sampling module is in order to sample to the compressor operating frequency.
4. air-conditioner according to claim 3 is characterized in that, described data processing module comprises:
The first data processing module receives the sampled signal of sampling module transmission in order to freeze at described air-conditioner or to dehumidify, and sampled signal is judged when moving, make the instruction that refrigerant circulation has abnormal failure;
The second data processing module in order to receiving the sampled signal of sampling module transmission when the operation of described air conditioner heat-production, and is judged sampled signal, makes the instruction that refrigerant circulation has abnormal failure.
5. air-conditioner according to claim 4 is characterized in that, described the first data processing module comprises:
The first computing module is in order to judge that described air-conditioner begins to freeze or the magnitude relationship of compressor operating frequency and low frequency dwell point frequency during the time t1 of the operation that dehumidifies;
The second computing module is in order to judge that when described air-conditioner begins to freeze or dehumidify operation indoor heat exchanger tube wall temperature and described air-conditioner begin to freeze or the difference of indoor heat exchanger tube wall temperature and the magnitude relationship of the first preset temperature when dehumidifying the time t1 that moves;
The 3rd computing module, in order to judge described air-conditioner begin to freeze or during the time t1 of the operation that dehumidify indoor environment temperature and described air-conditioner begin to freeze or the difference of indoor heat exchanger tube wall temperature and the magnitude relationship of the first preset temperature when dehumidifying the time t1 that moves;
The 4th computing module, in order to judge described air-conditioner begin to freeze or during the time t1 of the operation that dehumidify outdoor heat exchanger tube wall temperature and described air-conditioner begin to freeze or dehumidify the difference of outdoor heat exchanger tube wall temperature and the magnitude relationship of the first preset temperature when moving;
The 5th computing module, before judging that described air-conditioner begins refrigeration or dehumidifying operation, the relation of outside environment temperature and the second preset temperature and the 3rd preset temperature.
6. air-conditioner according to claim 4 is characterized in that, described the second data processing module comprises:
The 6th computing module, the magnitude relationship of compressor operating frequency and low frequency dwell point frequency when judging that described air-conditioner begins the time t2 of heating operation;
The 7th computing module, the difference of indoor heat exchanger tube wall temperature and the magnitude relationship of the 4th preset temperature when judging that indoor heat exchanger tube wall temperature and air-conditioner begin heating operation when described air-conditioner begins the time t2 of heating operation;
The 8th computing module, the difference of indoor environment temperature and the magnitude relationship of the 4th preset temperature when judging that indoor heat exchanger tube wall temperature and air-conditioner begin heating operation when described air-conditioner begins the time t2 of heating operation;
The 9th computing module, in order to judge air-conditioner begins heating operation to described air-conditioner from the beginning heating operation time t2 during this period of time the difference of outdoor heat exchanger tube wall temperature and the magnitude relationship of the 4th preset temperature when the maximum of outdoor heat exchanger tube wall temperature and time t2 that described air-conditioner begins heating operation;
The tenth computing module, before judging that described air-conditioner begins heating operation, outside environment temperature and the 5th preset temperature relation.
7. air-conditioner according to claim 5 is characterized in that, described Executive Module comprises:
The first computing module, the second computing module, the 3rd computing module, the 4th computing module, the 5th computing module are all judged and are satisfied condition in the first data processing module, the first Executive Module that execute protection is shut down.
8. air-conditioner according to claim 6 is characterized in that, described Executive Module comprises:
The 6th computing module, the 7th computing module, the 8th computing module, the 9th computing module, the tenth computing module are all judged and are satisfied condition in the second data processing module, the second Executive Module that execute protection is shut down.
9. air-conditioner according to claim 4 is characterized in that, described data processing module comprises:
Carry out the 3rd data processing module of accumulative total in order to the number of times of described processing module being made the instruction that refrigerant circulation has abnormal failure.
10. air-conditioner according to claim 9 is characterized in that, described Executive Module comprises:
In order to the 3rd Executive Module that receives the 3rd data processing module instruction and air-conditioner is carried out shutdown and can not automatically be resumed operation.
11. air-conditioner according to claim 10, it is characterized in that, described refrigerant circulation abnormal protection control device also includes: the output display module, and in order to receive the instruction of described the 3rd data processing module, control air conditioner room unit display unit shows refrigerant circulation abnormal failure code; Described output display module and the electrical connection of indoor set display unit.
12. the refrigerant circulation abnormal protection control method of air-conditioner is characterized in that comprising:
To sampling in indoor heat exchanger Guan Wen, outdoor heat exchanger Guan Wen, indoor environment temperature, outside environment temperature and the compressor operating frequency, and sampled signal is transmitted;
The time that described air-conditioner brings into operation is detected;
Receive sampled signal, and sampled signal is judged, make the instruction that refrigerant circulation has abnormal failure;
Receive instruction, control described air-conditioner and satisfy refrigerant circulation and protect shutdown when unusual.
13. the refrigerant circulation abnormal protection control method of air-conditioner according to claim 12 is characterized in that, the time that described air-conditioner is brought into operation is detected and comprises:
Air-conditioner is begun to freeze or the time t1 of the operation that dehumidifies detects;
The time t2 that air-conditioner is begun heating operation detects.
14. the refrigerant circulation abnormal protection control method of air-conditioner according to claim 12 is characterized in that, receives the sampled signal of sampling module transmission, and sampled signal is judged, makes the instruction that refrigerant circulation has abnormal failure and comprises:
Receive the sampled signal of sampling module transmission during to air-conditioner refrigeration or dehumidifying operation, and sampled signal is judged, make the instruction that refrigerant circulation has abnormal failure;
Receive the sampled signal of sampling module transmission when air conditioner heat-production is moved, and sampled signal is judged, make the instruction that refrigerant circulation has abnormal failure.
15. the refrigerant circulation abnormal protection control method of air-conditioner according to claim 14; it is characterized in that; receive the sampled signal of sampling module transmission during to air-conditioner refrigeration or dehumidifying operation, and sampled signal judged, make the instruction that refrigerant circulation has abnormal failure and comprise:
Judge that described air-conditioner begins to freeze or the magnitude relationship of compressor operating frequency and low frequency dwell point frequency during the time t1 of the operation that dehumidifies;
Judgement indoor heat exchanger tube wall temperature and described air-conditioner when described air-conditioner begins to freeze or dehumidify operation begin to freeze or the difference of indoor heat exchanger tube wall temperature and the magnitude relationship of the first preset temperature when dehumidifying the time t1 that moves;
Judgement described air-conditioner begin to freeze or during the time t1 of the operation that dehumidifies indoor environment temperature and described air-conditioner begin to freeze or the difference of indoor heat exchanger tube wall temperature and the magnitude relationship of the first preset temperature when dehumidifying the time t1 that moves;
Judgement described air-conditioner begin to freeze or during the time t1 of the operation that dehumidifies outdoor heat exchanger tube wall temperature and described air-conditioner begin to freeze or dehumidify the difference of outdoor heat exchanger tube wall temperature and the magnitude relationship of the first preset temperature when moving;
Before judging that described air-conditioner begins refrigeration or dehumidifying operation, the relation of outside environment temperature and the second preset temperature and the 3rd preset temperature.
16. the refrigerant circulation abnormal protection control method of air-conditioner according to claim 14; it is characterized in that; receive the sampled signal of sampling module transmission when air conditioner heat-production is moved, and sampled signal judged, make the instruction that refrigerant circulation has abnormal failure and comprise:
Judge the magnitude relationship of compressor operating frequency and low frequency dwell point frequency when described air-conditioner begins the time t2 of heating operation;
The difference of indoor heat exchanger tube wall temperature and the magnitude relationship of the 4th preset temperature when indoor heat exchanger tube wall temperature and air-conditioner began heating operation when judgement began the time t2 of heating operation at described air-conditioner;
The difference of indoor environment temperature and the magnitude relationship of the 4th preset temperature when indoor heat exchanger tube wall temperature and air-conditioner began heating operation when judgement began the time t2 of heating operation at described air-conditioner;
Judgement time t2 that air-conditioner begins heating operation from the beginning heating operation to described air-conditioner during this period of time the difference of outdoor heat exchanger tube wall temperature and the magnitude relationship of the 4th preset temperature when the maximum of outdoor heat exchanger tube wall temperature and time t2 that described air-conditioner begins heating operation;
Before judging that described air-conditioner begins heating operation, outside environment temperature and the 5th preset temperature relation.
17. the refrigerant circulation abnormal protection control method of air-conditioner according to claim 15 is characterized in that, judges all when satisfying condition that when described judgement execute protection is shut down.
18. the refrigerant circulation abnormal protection control method of air-conditioner according to claim 16 is characterized in that, judges all when satisfying condition that when described judgement execute protection is shut down.
19. the refrigerant circulation abnormal protection control method of air-conditioner according to claim 14 is characterized in that, receives the sampled signal of sampling module transmission, and sampled signal is judged, makes the instruction that refrigerant circulation has abnormal failure and also comprises:
Described processing module is made the number of times that refrigerant circulation has an instruction of abnormal failure to add up.
20. the refrigerant circulation abnormal protection control method of air-conditioner according to claim 19 is characterized in that, makes number of times that refrigerant circulation has an instruction of abnormal failure when reaching pre-determined number when described, air-conditioner is carried out and is shut down and can not automatically resume operation.
21. the refrigerant circulation abnormal protection control method of air-conditioner according to claim 20 is characterized in that, described air-conditioner is carried out and is shut down and can not automatically resume operation the time, the air conditioner room unit display unit shows refrigerant circulation abnormal failure code.
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