CN105042768B - The control method of indoor heat exchanger frosting is prevented during inverter air conditioner refrigerating operaton - Google Patents
The control method of indoor heat exchanger frosting is prevented during inverter air conditioner refrigerating operaton Download PDFInfo
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- CN105042768B CN105042768B CN201510378720.6A CN201510378720A CN105042768B CN 105042768 B CN105042768 B CN 105042768B CN 201510378720 A CN201510378720 A CN 201510378720A CN 105042768 B CN105042768 B CN 105042768B
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- frequency
- heat exchanger
- indoor heat
- changeable compressor
- control method
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/43—Defrosting; Preventing freezing of indoor units
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses the control method that indoor heat exchanger frosting is prevented during a kind of inverter air conditioner refrigerating operaton, step is：The coil temperature Tm of indoor heat exchanger is detected during refrigeration as basis for estimation；Compressor start under normal condition, when Tm drops between 8~9 DEG C, frequency-changeable compressor is with the slow raising frequency of 10~15s/Hz speed；When Tm drops between 3~5 DEG C, current frequency stable operation is kept；When caloric receptivity is slight insufficient, Tm drop to 1~2 DEG C between when, frequency-changeable compressor until Tm stops frequency reducing when going back up to 5~6 DEG C again, then keeps current frequency stable operation now with the slow frequency reducing of 5~10s/Hz speed；When recept the caloric wretched insufficiency when, Tm drop to 1~2 DEG C between when, frequency-changeable compressor shut down.The control method can reduce room temperature fluctuation.
Description
Technical field
The present invention relates to convertible frequency air-conditioner field, and indoor heat exchanger is prevented when being especially a kind of inverter air conditioner refrigerating operaton
The control method of frosting.
Background technology
Inverter air conditioner is in process of refrigerastion, if there is situation with the heat exchange of indoor environment, if user is suddenly by interior
Blower fan is transferred to low wind shelves from high wind shelves or the room of windowing is closed to the originals such as the air inlet blocking of window or indoor set suddenly
Cause, air-conditioning can be caused to be reduced suddenly from indoor caloric receptivity, heat exchange amount deficiency, and the reaction of the output frequency of compressor is not in time, just
The coil temperature of indoor heat exchanger can be caused to decline rapidly, now, if air humidity is larger, be just easy to heat exchanger indoors
Coil pipe frosting.Once frost layer is accumulated, indoor heat exchanger and room air heat exchanger channels will be further blocked, is further reduced
Heat transfer effect.So prevent that the technology of frosting is particularly significant in process of refrigerastion.
And the specific aim measure that prior art is taken is fairly simple roughly, once find the coil temperature mistake of indoor heat exchanger
It is low, just directly shut down or to compressor significantly frequency reducing, so, room temperature certainly will be made to produce larger fluctuation, made one very
It is uncomfortable.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of convertible frequency air-conditioner mechanism cold fortune that can reduce room temperature fluctuation
The control method of indoor heat exchanger frosting is prevented during row.
The technical solution of the present invention prevents indoor heat exchanger frosting when being to provide a kind of inverter air conditioner refrigerating operaton
Control method, it is comprised the following steps that：
In refrigerating operaton, the coil temperature Tm of indoor heat exchanger is detected in real time as the foundation judged；
After control process under normal condition is frequency-changeable compressor starting up, Tm can be gradually reduced, when Tm drops to 8~
When between 9 DEG C, frequency-changeable compressor is with the slow raising frequency of 10~15s/Hz speed；Now Tm may proceed to decline, when Tm drops to 3~
When between 5 DEG C, current frequency-changeable compressor running frequency is defined as highest frequency, keeps highest frequency stable operation so that
Tm is also steadily in the long term in the optimum temperature range between 3~5 DEG C；
When the heat exchange situation of indoor heat exchanger, which changes, to be caused to recept the caloric slight insufficient, Tm can reach 3~5 DEG C it
Between optimum temperature range after continue to decline, when Tm drops between 1~2 DEG C, frequency-changeable compressor is with 5~10s/Hz speed
Slow frequency reducing, until Tm stops frequency reducing when going back up to 5~6 DEG C again, then keep current frequency stable operation now；
When exception, which occurs, for the heat exchange situation of indoor heat exchanger causes caloric receptivity wretched insufficiency, Tm can decline rapidly, work as Tm
When between dropping to -1~-2 DEG C, frequency-changeable compressor is shut down；After shutdown after Tm is gone back up in the range of 7~9 DEG C, recover normal shape
Raising frequency at a slow speed under state, if frequency-changeable compressor occur again after resuming operation Tm drop to -1~-2 DEG C between when, shut down
Report failure.
The principle of the control method is as follows.
After normal startup frequency-changeable compressor, with the slow raising frequency of 10~15s/Hz speed, prevent too fast raising frequency from causing Tm temperature
Spend low and frosting；And when Tm drops in the optimum temperature range between 3~5 DEG C, frequency-changeable compressor is kept currently most
Good speed line frequency, make the coil temperature of indoor set both will not too low and frosting, again will not be too high and reduce heat transfer effect so that room
Between temperature equalization, avoid fluctuating.
When indoor heat exchange situation changes, as user suddenly turns down the wind shelves of indoor fan or user is closed window and led
A series of situations such as the air inlet Partial Blocking of indoor heat exchange load reduction or indoor set are caused to cause indoor heat exchanger to absorb heat
When slight insufficient, for the situation with the slow frequency reducing of 5~10s/Hz speed, to prevent the coil temperature of indoor heat exchanger from entering one
Step reduces and frosting, while and can avoids that frequency reducing is too fast to cause refrigeration substantially to weaken, and effectively avoids room temperature from fluctuating.When
After Tm is warming up to such as 5~6 DEG C of the temperature range slightly above between 3~5 DEG C again, stops frequency reducing, prevent refrigeration significantly
Weaken.Meanwhile has there is situation in the heat transfer effect for also allowing for indoor heat exchanger, thus coil temperature Tm is stable than reason
Think the little higher scope operation of scope, avoid frosting.
When indoor heat exchange situation occur it is abnormal, as indoor fan failure or air inlet it is completely plugged after, indoor heat exchanger is inhaled
During hot wretched insufficiency, the coil temperature of indoor heat exchanger can significantly reduce and frosting, and compressor shutdown resolutely now is treated into interior
The coil temperature of heat exchanger turns back on again after gradually rising, and carries out raising frequency at a slow speed according to the situation of normal boot-strap so that Tm
Again decline, and attempt to return to Tm in the optimum temperature range between 3~5 DEG C, but if Tm still occur drops to -1
~-2 DEG C of situation, it is determined that there is great exception in heat exchange, as indoor fan failure or air inlet are completely plugged, then shut down report therefore
Barrier.
Prevented using above method, during inverter air conditioner refrigerating operaton of the present invention the control method of indoor heat exchanger frosting with
Prior art is compared, and has advantages below：
Analyzed more than, the control method can as much as possible ensure that the room temperature under refrigeration mode is stable, subtract
It is small or even avoid room temperature from fluctuating, frosting is avoided, user is felt comfortable.
Embodiment
The control method of indoor heat exchanger frosting is prevented during inverter air conditioner refrigerating operaton of the present invention, its specific steps is such as
Under.
In refrigerating operaton, the coil temperature Tm of indoor heat exchanger is detected in real time as the foundation judged.
After control process under normal condition is frequency-changeable compressor starting up, Tm can be gradually reduced, when Tm drops to 8~
When between 9 DEG C, such as drop to 8.5 DEG C, frequency-changeable compressor such as rose 1Hz with the slow raising frequency of 10~15s/Hz speed with 12 seconds
Speed raising frequency；Now Tm may proceed to decline, when Tm drops between 3~5 DEG C, as Tm be 4 DEG C when, by current frequency conversion pressure
Contracting machine running frequency is defined as highest frequency, keeps highest frequency stable operation so that Tm is also steadily in the long term between 3~5 DEG C
Optimum temperature range in.
When the heat exchange situation of indoor heat exchanger, which changes, to be caused to recept the caloric slight insufficient, Tm can reach 3~5 DEG C it
Between optimum temperature range after continue to decline, when Tm drops between 1~2 DEG C, as Tm be 1.5 DEG C when, frequency-changeable compressor is with 5
~10s/Hz such as 7s/Hz slow the frequency reducing of speed, until Tm stops frequency reducing when going back up to 5~6 DEG C such as 5.2 DEG C again, then keep
Current frequency stable operation now.
When exception, which occurs, for the heat exchange situation of indoor heat exchanger causes caloric receptivity wretched insufficiency, Tm can decline rapidly, work as Tm
When between dropping to -1 to -2 DEG C, frequency-changeable compressor is shut down.After shutdown after Tm is gone back up in the range of 7~9 DEG C, recover normal shape
Raising frequency at a slow speed under state, i.e. frequency-changeable compressor are with the slow raising frequency of 10~15s/Hz speed, if frequency-changeable compressor resumes operation
Occur again afterwards Tm drop to -1~-2 DEG C between when, then shut down report failure.
Claims (1)
1. the control method of indoor heat exchanger frosting is prevented during a kind of inverter air conditioner refrigerating operaton, it is characterised in that：Its step
It is as follows：
In refrigerating operaton, the coil temperature Tm of indoor heat exchanger is detected in real time as the foundation judged；
Control process under normal condition is after frequency-changeable compressor starting up, Tm can be gradually reduced, when Tm drops to 8~9 DEG C
Between when, frequency-changeable compressor is with the slow raising frequency of 10~15s/Hz speed；Now Tm may proceed to decline, when Tm drops to 3~5 DEG C
Between when, current frequency-changeable compressor running frequency is defined as highest frequency, keeps highest frequency stable operation so that Tm
Steadily in the long term in the optimum temperature range between 3~5 DEG C；
When the heat exchange situation of indoor heat exchanger, which changes, to be caused to recept the caloric slight insufficient, Tm can reach between 3~5 DEG C
Continue to decline after optimum temperature range, when Tm drops between 1~2 DEG C, frequency-changeable compressor is slow with 5~10s/Hz speed
Frequency reducing, until Tm stops frequency reducing when going back up to 5~6 DEG C again, then keep current frequency stable operation now；
When exception, which occurs, for the heat exchange situation of indoor heat exchanger causes caloric receptivity wretched insufficiency, Tm can decline rapidly, when Tm declines
When between to -1~-2 DEG C, frequency-changeable compressor is shut down；After shutdown after Tm is gone back up in the range of 7~9 DEG C, recover under normal condition
Raising frequency at a slow speed, if frequency-changeable compressor occur again after resuming operation Tm drop to -1~-2 DEG C between when, shut down report therefore
Barrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510378720.6A CN105042768B (en) | 2015-06-29 | 2015-06-29 | The control method of indoor heat exchanger frosting is prevented during inverter air conditioner refrigerating operaton |
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| CN201510378720.6A CN105042768B (en) | 2015-06-29 | 2015-06-29 | The control method of indoor heat exchanger frosting is prevented during inverter air conditioner refrigerating operaton |
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| CN105042768A CN105042768A (en) | 2015-11-11 |
| CN105042768B true CN105042768B (en) | 2018-03-20 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106123287A (en) * | 2016-06-30 | 2016-11-16 | 青岛海尔空调器有限总公司 | A kind of air-conditioner and control method thereof |
| CN107525234B (en) * | 2017-08-17 | 2020-11-03 | 青岛海尔空调器有限总公司 | Method and device for frequency conversion protection of air conditioner compressor |
| CN109210698B (en) * | 2018-09-10 | 2020-11-03 | 青岛海尔空调器有限总公司 | Control method for air conditioner freezing protection |
| CN109945430B (en) * | 2019-03-13 | 2020-08-07 | 珠海格力电器股份有限公司 | Operation protection method, device and system for base crane and base crane |
| CN110513826B (en) * | 2019-09-10 | 2021-09-21 | 宁波奥克斯电气股份有限公司 | Air conditioner and control method thereof |
| CN112577155B (en) * | 2019-09-27 | 2022-12-16 | 广东美的制冷设备有限公司 | Control method of air conditioner, air conditioner and computer readable storage medium |
| CN111780361B (en) * | 2020-06-30 | 2021-12-03 | 海信（山东）空调有限公司 | Air conditioner |
| CN113068546A (en) * | 2021-03-31 | 2021-07-06 | 广东积微科技有限公司 | Air conditioner control method for greenhouse low-temperature refrigeration |
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| JPH06273011A (en) * | 1993-03-17 | 1994-09-30 | Sanyo Electric Co Ltd | Cool air drier |
| KR20010001012A (en) * | 1999-06-01 | 2001-01-05 | 구자홍 | Defrosting method for air conditioner |
| CN101256061A (en) * | 2007-06-15 | 2008-09-03 | 宁波奥克斯空调有限公司 | Method for cleaning air conditioner evaporator |
| CN102345915A (en) * | 2011-08-02 | 2012-02-08 | 宁波奥克斯电气有限公司 | Fault operation control method of DC (direct current) convertible frequency air conditioner |
| CN103115416A (en) * | 2013-03-04 | 2013-05-22 | 海信科龙电器股份有限公司 | Air-conditioner outdoor motor control method |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06273011A (en) * | 1993-03-17 | 1994-09-30 | Sanyo Electric Co Ltd | Cool air drier |
| KR20010001012A (en) * | 1999-06-01 | 2001-01-05 | 구자홍 | Defrosting method for air conditioner |
| CN101256061A (en) * | 2007-06-15 | 2008-09-03 | 宁波奥克斯空调有限公司 | Method for cleaning air conditioner evaporator |
| CN102345915A (en) * | 2011-08-02 | 2012-02-08 | 宁波奥克斯电气有限公司 | Fault operation control method of DC (direct current) convertible frequency air conditioner |
| CN103115416A (en) * | 2013-03-04 | 2013-05-22 | 海信科龙电器股份有限公司 | Air-conditioner outdoor motor control method |
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Address after: 315191 Zhejiang city of Ningbo province Jiangshan town Yinzhou District Mingguang Road No. 1166 Applicant after: NINGBO AUX ELECTRIC CO., LTD. Address before: 315191 Zhejiang city of Ningbo province Jiangshan town Yinzhou District Mingguang Road No. 1166 Applicant before: Ningbo AUX Electric Co., Ltd. |
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Effective date of registration: 20191225 Address after: 243100 No. 1166, oaks Avenue, Dangtu Economic Development Zone, Ma'anshan City, Anhui Province Patentee after: Anhui Ox Intelligent Electric Co., Ltd. Address before: 315191 Zhejiang city of Ningbo province Jiangshan town Yinzhou District Mingguang Road No. 1166 Patentee before: NINGBO AUX ELECTRIC CO., LTD. |