CN102759239B - Defrosting method combining temperature change with current value change for air conditioner and controller thereof - Google Patents
Defrosting method combining temperature change with current value change for air conditioner and controller thereof Download PDFInfo
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- CN102759239B CN102759239B CN201210248394.3A CN201210248394A CN102759239B CN 102759239 B CN102759239 B CN 102759239B CN 201210248394 A CN201210248394 A CN 201210248394A CN 102759239 B CN102759239 B CN 102759239B
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- 238000010257 thawing Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000004458 analytical method Methods 0.000 claims abstract description 3
- 239000003990 capacitor Substances 0.000 claims description 9
- 238000004378 air conditioning Methods 0.000 claims description 7
- 239000000523 sample Substances 0.000 claims description 5
- 230000007423 decrease Effects 0.000 claims description 3
- 238000007405 data analysis Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 5
- 230000001186 cumulative effect Effects 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 206010008190 Cerebrovascular accident Diseases 0.000 description 2
- 208000006011 Stroke Diseases 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
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Abstract
The invention discloses a defrosting method combing temperature change with current value change for an air conditioner and a controller thereof. The defrosting method comprises the following steps: at first, a temperature detecting unit acquires temperature data of coiler temperature and indoor environment temperature; then, a main control unit analyses the received and acquired data, and judges a corresponding relationship between a drop difference value of the indoor coiler temperature and the indoor environment temperature and frosting condition according to different stages of cumulative operation time of a compressor, so as to enter into a defrosting period under control; an output unit is controlled to defrost after the air conditioner is judged to be frosted, and simultaneously a corresponding defrosting function code is displayed by a display unit; and a current detecting unit detects the current of the compressor in real time, so as to accurately exit from a defrosting period according to a corresponding relationship between the current value after defrosting is completed and current value when the air conditioner operates stably. Through the defrosting method, the air conditioner accurately is defrosted at accurate time and can exit from defrosting in time after defrosting is completed, thereby improving heating efficiency of the air conditioner.
Description
Technical field
The present invention relates to the technical field of air-conditioner, refer in particular to a kind of air-conditioner in conjunction with variations in temperature and current value change defrosting method and controller.
Background technology
At present, in conventional air-conditioner, defrost scheme is general all enters defrost periods according to the judgement of temperature, the time of exiting defrost is fixing, this scheme makes the long or sordid situation of defrost defrost same period in the efficiency utilizing air-conditioner, the situation of the frostless defrost that same existence causes because of the fluctuation of temperature sensor, current defrost scheme such as still to need just exit defrost at the defrost periods to be fixed, so just causes the heating effect of air-conditioner poor.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, there is provided a kind of reliable air-conditioner reasonable in design in conjunction with variations in temperature and current value change defrosting method and controller, realize accurately entering and exiting defrost periods, improve the efficiency of defrost, thus guarantee the heating effect of air-conditioner.
For achieving the above object, its defrosting method of technical scheme provided by the present invention is: first carry out temperature data acquisition by temperature detecting unit to coil temperature and indoor environment temperature, main control unit carries out analysis judgement by the image data received afterwards, the corresponding relation of the difference judging the decline of indoor coil pipe and indoor environment temperature according to the different phase of compressor accumulated running time frosting with whether and control to enter defrost periods, after main control unit is to data analysis, judge that air-conditioner controls output unit after frosting and carries out defrost, simultaneously by the corresponding function code of display unit display defrost, detected in real time by the electric current of current detecting unit to compressor afterwards, the corresponding relation that current value when the current value after clean according to defrost and air-conditioner stable operation exists accurately exits defrost periods.
After exiting defrost periods, the pattern that before main control unit control output unit enters defrost, user sets, display unit display simultaneously arranges pattern accordingly.
Current value during described air-conditioner stable operation is reference current value Iref, is that air-conditioner runs when non-overload after 10 minutes by compressor current value that electric current verification unit gathers.
The corresponding relation that current value when the current value after described defrost is clean and air-conditioner stable operation exists is that to work as before air-conditioner enters defrost be the situation of high wind mode operation, when real-time current rises to 70% of the current value of air-conditioner stable operation, air-conditioner defrost is clean; Need comparative example to carry out the adjustment of 5% when air-conditioner operates to apoplexy pattern, operating in low wind pattern needs comparative example to carry out the adjustment of 10%.
Controller of the present invention includes main control unit, temperature detecting unit, current detecting unit, display unit, power subsystem, output unit, wherein, described main control unit connects with temperature detecting unit, current detecting unit, display unit, power subsystem, output unit one_to_one corresponding respectively, meanwhile, this power subsystem connects with output unit.
Described current detecting unit includes by Zener diode, the first non-polarized electrolytic capacitor, the parallel circuit be made up of polarity electrolytic capacitor, the first resistance, the second resistance and the full-wave rectifying circuit that is made up of multiple commutation diode, the second non-polarized electrolytic capacitor, the 3rd resistance, inductance coil, wherein, described full-wave rectifying circuit connects with the two ends of parallel circuit, meanwhile, this parallel circuit connects with the AD0 pin of main control unit.
Described display unit includes interconnective display module and display driver chip, and wherein, described display driver chip connects with DA, CLR, STB pin one_to_one corresponding of main control unit respectively.
Described temperature detecting unit connects with the AD1 pin of main control unit.
Described output unit includes interconnective air-conditioning output module and drive circuit, and wherein, described air-conditioning output module connects with power subsystem.
Described temperature detecting unit includes the air conditioner chamber's inner coil pipe connected with the AD1 pin of main control unit respectively and pops one's head in and room-temperature probes.
The present invention is after have employed such scheme, and it is accurate that its great advantage is air-conditioner can be made to enter defrost point by the present invention, and exit defrost in time after defrost totally, improves the heating efficiency of air-conditioner.
Accompanying drawing explanation
Fig. 1 is the theory diagram of controller of the present invention.
Fig. 2 is the circuit diagram of current detecting unit of the present invention.
Fig. 3 is the program flow diagram that the present invention enters defrost.
Fig. 4 is the program flow diagram that the present invention exits defrost.
Detailed description of the invention
Below in conjunction with specific embodiment, the invention will be further described.
Shown in accompanying drawing 1 and accompanying drawing 2, controller described in the present embodiment includes main control unit 1, temperature detecting unit 2, current detecting unit 3, display unit 4, power subsystem 5, output unit 6, wherein, main control unit 1 described in the present embodiment connects with temperature detecting unit 2, current detecting unit 3, display unit 4, power subsystem 5, output unit 6 one_to_one corresponding respectively, meanwhile, this power subsystem 5 connects with output unit 6.Described current detecting unit 3 includes by Zener diode IN4733, the first non-polarized electrolytic capacitor 104, the parallel circuit 7 be made up of polarity electrolytic capacitor 100UF, the first resistance 1K, the second resistance 16K and the full-wave rectifying circuit 8 that is made up of multiple commutation diode IN4007, the second non-polarized electrolytic capacitor 103, the 3rd resistance 11K, inductance coil CT60, wherein, described full-wave rectifying circuit 8 connects with the two ends of parallel circuit 7, meanwhile, this parallel circuit 7 connects with the AD0 pin of main control unit 1.Described display unit 4 includes interconnective display module 9 and display driver chip EXC2618, and wherein, described display driver chip EXC2618 connects with DA, CLR, STB pin one_to_one corresponding of main control unit 1 respectively.Described temperature detecting unit 2 includes the air conditioner chamber's inner coil pipe connected with the AD1 pin of main control unit 1 respectively and pops one's head in and room-temperature probes, for carrying out temperature data acquisition to coil temperature and indoor environment temperature.Described output unit 6 includes interconnective air-conditioning output module 10 and drive circuit 11, and wherein, described air-conditioning output module 10 connects with power subsystem 5.
Shown in accompanying drawing 3 and accompanying drawing 4, the control program of the above-mentioned controller of the present embodiment is as follows: first whether main control unit 1 detect compressor and to run and whether outer blower fan is opened, if compressor and outer blower fan, when not closing, reset corresponding flag bit.When outer blower fan to run after 10 minutes by the current value of current detecting unit 3 collect and process machine stable operation continuously as reference value I ref, the data of current air conditioning coils temperature and indoor environment temperature are gathered by the air conditioner chamber inner coil pipe probe of temperature detecting unit 2 and room-temperature probes, whether to meet lower than 28 DEG C according to the coil temperature Tp that collects afterwards and compressor runs continuously and is greater than 40 minutes, now meet anti-cold weathering ice-lolly part enter 6 minutes defrost periods immediately if meet this condition.If do not meet anti-cold weathering ice-lolly part to compare according to the coil temperature collected and indoor environment temperature again, obtain a maximum difference, the corresponding relation of the difference declined in conjunction with certain hour inner coil pipe temperature and indoor environment temperature frosting with whether, when compressor accumulated running time more than 40 minutes after judge the fall of coil temperature and indoor environment temperature difference, 6 minutes defrost periods are entered when more than 6 DEG C, if do not meet this condition to judge when compressor adds up operation the difference that temperature declines after 90 minutes again, if decrease beyond 3 DEG C to enter 10 minutes defrost periods immediately, if do not meet, 12 minutes defrosting cycles are entered after 180 minutes again at compressor operating.After entering defrost periods, main control unit 1 carries out defrost by controlling output unit 6, is shown the function code of defrost: DF by display unit 4 simultaneously.
After air-conditioner enters defrost periods, detect real-time compressor current value by current detecting unit 3, when the defrost time does not exceed the maximum time of corresponding defrost periods, the compressor current value of sampling real-time.In conjunction with the corresponding relation that current value when the clean after-current value of defrost and air-conditioner stable operation exists, wherein, this corresponding relation is as follows: be the situation of high wind mode operation when air-conditioner enters before defrost, when real-time current rises to 70% of the current value Iref of compressor stable operation, air-conditioner defrost is clean, need comparative example to carry out the adjustment of 5% when air-conditioner operates to apoplexy pattern, operating in low wind pattern needs comparative example to carry out the adjustment of 10%.Detecting to meet when exiting current value and exit defrost immediately, entering the heating mode of user's relative set simultaneously by controlling output unit 6, meanwhile, display unit 4 display enters the content before defrost.
The above parameter of the present invention all writes into eeprom chip, and the actual conditions according to different regions carry out adjustment parameter, carry out parameter adjustment by special remote controller, convenient realization.
The examples of implementation of the above are only the preferred embodiment of the present invention, not limit practical range of the present invention with this, therefore the change that all shapes according to the present invention, principle are done, all should be encompassed in protection scope of the present invention.
Claims (4)
1. one kind realizes the controller of the defrosting method of air-conditioner temperature and current value change, first this defrosting method carries out temperature data acquisition by temperature detecting unit to coil temperature and indoor environment temperature, main control unit carries out analysis judgement by the image data received afterwards, the corresponding relation of the difference judging the decline of indoor coil pipe and indoor environment temperature according to the different phase of compressor accumulated running time frosting with whether and control to enter defrost periods, after main control unit is to data analysis, judge that air-conditioner controls output unit after frosting and carries out defrost, simultaneously by the corresponding function code of display unit display defrost, detected in real time by the electric current of current detecting unit to compressor afterwards, the corresponding relation that current value when the current value after clean according to defrost and air-conditioner stable operation exists accurately exits defrost periods, controller for realizing above-mentioned defrosting method includes main control unit (1), temperature detecting unit (2), current detecting unit (3), display unit (4), power subsystem (5), output unit (6), wherein, described main control unit (1) connects with temperature detecting unit (2), current detecting unit (3), display unit (4), power subsystem (5), output unit (6) one_to_one corresponding respectively, meanwhile, this power subsystem (5) connects with output unit (6), it is characterized in that: described current detecting unit (3) includes by Zener diode (IN4733), first non-polarized electrolytic capacitor (104), there is polarity electrolytic capacitor (100UF), first resistance (1K), the parallel circuit (7) that second resistance (16K) forms and by multiple commutation diode (IN4007), second non-polarized electrolytic capacitor (103), 3rd resistance (11K), the full-wave rectifying circuit (8) that inductance coil (CT60) forms, wherein, described full-wave rectifying circuit (8) connects with the two ends of parallel circuit (7), simultaneously, this parallel circuit (7) connects with the AD0 pin of main control unit (1).
2. a kind of controller realizing the defrosting method of air-conditioner temperature and current value change according to claim 1, it is characterized in that: described display unit (4) includes interconnective display module (9) and display driver chip (EXC2618), wherein, described display driver chip (EXC2618) connects with DA, CLR, STB pin one_to_one corresponding of main control unit (1) respectively.
3. a kind of controller realizing the defrosting method of air-conditioner temperature and current value change according to claim 1, is characterized in that: described temperature detecting unit (2) connects with the AD1 pin of main control unit (1).
4. a kind of controller realizing the defrosting method of air-conditioner temperature and current value change according to claim 1, it is characterized in that: described output unit (6) includes interconnective air-conditioning output module (10) and drive circuit (11), wherein, described air-conditioning output module (10) connects with power subsystem (5).
5.a kind of controller realizing the defrosting method of air-conditioner temperature and current value change according to claim 1, is characterized in that: described temperature detecting unit (2) includes the air conditioner chamber's inner coil pipe connected with the AD1 pin of main control unit (1) respectively and pops one's head in and room-temperature probes.
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Cited By (1)
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|---|---|---|---|---|
| CN107238184A (en) * | 2017-06-28 | 2017-10-10 | 广东美的暖通设备有限公司 | Defrost frequency method of adjustment, system and air-conditioning |
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| CN104728989B (en) * | 2013-12-18 | 2017-07-28 | 珠海格力电器股份有限公司 | Defrosting control method for air conditioner and air conditioner for executing defrosting control method |
| CN104180478B (en) * | 2014-08-22 | 2017-08-25 | 广东美的集团芜湖制冷设备有限公司 | The defrosting control method of air conditioner, the defrosting control device of air conditioner and air conditioner |
| CN104180571B (en) * | 2014-08-25 | 2016-11-09 | 广东美的集团芜湖制冷设备有限公司 | The defrosting control method of air-conditioner, the defrosting of air-conditioner control device and air-conditioner |
| CN104279698A (en) * | 2014-09-28 | 2015-01-14 | 芜湖美智空调设备有限公司 | Mobile air conditioner and defrosting control method thereof |
| CN104596171B (en) * | 2014-12-22 | 2018-03-09 | 广东美的制冷设备有限公司 | The control method and control device of compressor electric motor in air conditioner and air conditioner |
| CN104913452B (en) * | 2015-06-03 | 2017-11-10 | 广东美的制冷设备有限公司 | Air conditioner and its defrosting control method |
| CN104913455B (en) * | 2015-06-05 | 2017-11-14 | 美的集团武汉制冷设备有限公司 | Defrosting control method, device and the terminal of air conditioner |
| CN105157161B (en) * | 2015-07-07 | 2018-01-23 | 珠海格力电器股份有限公司 | method and device for detecting frosting of air conditioner |
| CN105571245B (en) * | 2016-01-28 | 2017-12-08 | 珠海格力电器股份有限公司 | Air conditioner frosting judgment method and device and air conditioning system |
| CN108413563A (en) * | 2018-02-14 | 2018-08-17 | 青岛海尔空调器有限总公司 | Indoor unit anti-freeze control method for air conditioner |
| CN112050361B (en) * | 2019-06-06 | 2022-07-19 | 重庆海尔空调器有限公司 | Control method and control device for defrosting of air conditioner and air conditioner |
| CN110631208A (en) * | 2019-09-30 | 2019-12-31 | 广东美的暖通设备有限公司 | Operation control method, operation control device, air conditioning system, and storage medium |
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| CN101793429B (en) * | 2010-02-26 | 2012-06-27 | 广东美的电器股份有限公司 | Intelligent defrosting control method of split air conditioner |
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| JPH11281213A (en) * | 1998-03-27 | 1999-10-15 | Matsushita Electric Ind Co Ltd | Defrosting controller of air conditioner |
| CN1233971C (en) * | 2002-06-25 | 2005-12-28 | 三洋电机株式会社 | Air-conditioning plant and defrosting operation method |
| US8091372B1 (en) * | 2009-03-11 | 2012-01-10 | Mark Ekern | Heat pump defrost system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101793429B (en) * | 2010-02-26 | 2012-06-27 | 广东美的电器股份有限公司 | Intelligent defrosting control method of split air conditioner |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107238184A (en) * | 2017-06-28 | 2017-10-10 | 广东美的暖通设备有限公司 | Defrost frequency method of adjustment, system and air-conditioning |
| CN107238184B (en) * | 2017-06-28 | 2019-06-28 | 广东美的暖通设备有限公司 | Defrost frequency method of adjustment, system and air-conditioning |
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