CN104197594A - Defrosting control method for multi-on-line variable-frequency air conditioners - Google Patents
Defrosting control method for multi-on-line variable-frequency air conditioners Download PDFInfo
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- CN104197594A CN104197594A CN201410432896.0A CN201410432896A CN104197594A CN 104197594 A CN104197594 A CN 104197594A CN 201410432896 A CN201410432896 A CN 201410432896A CN 104197594 A CN104197594 A CN 104197594A
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Abstract
The invention relates to multi-on-line variable-frequency air conditioners and provides a defrosting control method for the multi-on-line variable-frequency air conditioners in order to solve the problem that system performance is affected as a system cannot be defrosted normally. The method comprises the steps that firstly, the system detects the temperature of an outdoor environment and the temperature of heat exchangers of all outdoor units and figures out the temperature difference of the outdoor units, and meanwhile the system detects the continuous operation time of compressors of all the outdoor units; secondly, the system judges whether the continuous operation time of the compressors of the outdoor units is greater than or equal to the set operation time of the compressors and judges whether the temperature difference of the outdoor units is within a frosting temperature difference area or not at the same time; if yes, the system issues a defrosting application to a host; if not, the operation is repeated; finally, after receiving the defrosting application of any outdoor unit, the host judges whether to allow defrosting or not according to the current operation condition of the system; if yes, the host issues defrosting commands to all the outdoor units; if not, the operation is repeated; after receiving the defrosting commands, the outdoor units operate according to an automatic defrosting program and perform defrosting. The defrosting control method is suitable for the multi-on-line variable-frequency air conditioners.
Description
Technical field
The present invention relates to multi-connected machine convertible frequency air-conditioner, particularly multi-connected machine convertible frequency air-conditioner defrosting control method.
Background technology
In air-conditioning heating, the liquid refrigerants of normal temperature and pressure absorbs ambient heat vaporization at off-premises station, and off-premises station environment temperature just reduces, and side air themperature is higher, now will be on off-premises station frosting.After air-conditioning frosting, how how many by software detection frosting, software judgement according to being generally according to the difference of outdoor unit heat exchanger temperature (outer disk temperature) and outdoor environment temperature, be generally to judge that outer disk is than the low certain temperature of outdoor temperature, just judgement has frost, then starts defrosting program.The shortcoming of the method is: 1., when outdoor while having outside many machine, every outer machine examination measures in the time of need to defrosting, and carries out automatic defrosting, will make multi-connected machine system have frequently off-premises station defrosting, affects heating effect.2. when outdoor environment temperature is different, the frost of same thickness, the temperature difference of outdoor environment temperature and outdoor heat exchange actuator temperature also can be different, if the temperature difference is set a fixed value, just caused some operating mode frosting, can not accurately judge, some operating mode frosting does not reach the thickness of defrosting, has carried out mistake defrosting.No matter frosting reaches defrosting condition and can not defrost and still do not reach defrosting condition and carried out mistake defrosting, all can affect the performance of system, causes heating effect not good.
Summary of the invention
Technical problem to be solved by this invention is exactly that multi-connected machine convertible frequency air-conditioner defrosting control method is provided, to reach, make fast the outer machine of whole air-conditioning system defrost, then unified heating, improves defrosting efficiency, strengthens the effect of the heating capacity of convertible frequency air-conditioner.
The present invention solve the technical problem, and the technical scheme of employing is that multi-connected machine convertible frequency air-conditioner defrosting control method, comprises the following steps:
Step 1, system detect outdoor environment temperature and detect all outdoor unit heat exchanger temperature, calculate respectively the off-premises station temperature difference, and simultaneity factor detects the compressor continuous operating time of all off-premises stations;
Step 2, system judge whether the compressor continuous operating time of off-premises station is more than or equal to compressor operating setting-up time, judge that this off-premises station temperature difference whether in frosting temperature difference region, is to enter step 3 simultaneously, otherwise repeating step 1;
Step 3, system are sent defrosting application to main frame;
Step 4, main frame receive after the defrosting application of any off-premises station, according to current system operation conditions, judge whether to allow defrosting, and be to all off-premises stations, to send defrosting order, otherwise repeating step 1;
Step 5, after off-premises station is received defrosting order, according to the operation of automatic defrosting program, defrost.
Concrete, described multi-connected machine convertible frequency air-conditioner defrosting control method is further comprising the steps of:
Off-premises station is according to the default Defrost operation condition that exits, whether judgement defrosting completes, after defrosting completes, to main frame, send the instruction that defrosted, when main frame, receive after the instruction that all off-premises stations have defrosted, to all off-premises stations, send the order that defrosting finishes, when off-premises station receives after the order that defrosting finishes, exit defrosting program, enter the program that normally heats.
Concrete, described system detects outdoor environment temperature by outdoor environment temperature sensor.
Further, described system detects all outdoor unit heat exchanger temperature by outdoor heat exchanger sensor.
The invention has the beneficial effects as follows, according to outdoor environment temperature and outdoor unit heat exchanger temperature, judge that the two temperature, whether in default defrosting region, judges whether compressor continuous operating time is more than or equal to compressor operating setting-up time, after meeting defrosting condition, to main frame application defrosting, when main frame receives after defrosting application, according to current system working order, can judgement defrost, if met after defrosting condition, main frame sends defrosting order to all off-premises stations, unifies defrosting;
The advantage of unified defrosting is to make fast the outer machine of whole air-conditioning system all defrost, and then unification heats, and defrosting efficiency is improved, and has strengthened the heating capacity of convertible frequency air-conditioner.
Figure of description
Fig. 1 is the method flow diagram of multi-connected machine convertible frequency air-conditioner defrosting control method embodiment of the present invention;
Fig. 2 is the default frosting difference curve figure in multi-connected machine convertible frequency air-conditioner defrosting control method embodiment of the present invention.
The specific embodiment
Below in conjunction with embodiment, describe technical scheme of the present invention in detail:
The present invention is directed in prior art, often occur that frosting reaches defrosting condition system and but can not defrost or not reach defrosting condition and carried out mistake defrosting, thereby affect the performance of system, cause the not good problem of heating effect, a kind of multi-connected machine convertible frequency air-conditioner defrosting control method is provided, and first, system detects outdoor environment temperature and detects all outdoor unit heat exchanger temperature, calculate respectively the off-premises station temperature difference, simultaneity factor detects the compressor continuous operating time of all off-premises stations; Secondly, system judge whether the compressor continuous operating time of off-premises station is more than or equal to compressor operating setting-up time, judges that this off-premises station temperature difference whether in frosting temperature difference region, is that system is sent defrosting application to main frame simultaneously; Otherwise repeat above-mentioned all operations; Finally, main frame receives after the defrosting application of any off-premises station, according to current system operation conditions, judges whether to allow defrosting, is to all off-premises stations, to send defrosting order, otherwise repeats above-mentioned all operations; When off-premises station, receive after defrosting order, according to the operation of automatic defrosting program, defrost.According to outdoor environment temperature and outdoor unit heat exchanger temperature, judge that whether the two temperature is in default defrosting region, judge whether compressor continuous operating time is more than or equal to compressor operating setting-up time, after meeting defrosting condition, to main frame application, defrost, when main frame receives after defrosting application, according to current system working order, can judgement defrost, if met after defrosting condition, main frame sends defrosting order to all off-premises stations, unifies defrosting; The advantage of unified defrosting is to make fast the outer machine of whole air-conditioning system all defrost, and then unification heats, and defrosting efficiency is improved, and has strengthened the heating capacity of convertible frequency air-conditioner.
Embodiment
The multi-connected machine convertible frequency air-conditioner defrosting control method that this is routine, as shown in Figure 1, comprises the following steps:
Step 1, system detects outdoor environment temperature by outdoor environment temperature sensor, and described outdoor environment temperature is counted T1, by outdoor heat exchanger sensor, detects, and described outdoor unit heat exchanger temperature is counted T2; Meanwhile, system detects the compressor continuous operating time of all off-premises stations, and described compressor continuous operating time is counted M; And calculating respectively all off-premises station temperature difference, the described off-premises station temperature difference is counted △ T, △ T=|T1-T2|.
Step 2, system judges whether the compressor continuous operating time M of off-premises station is more than or equal to compressor operating setting-up time M1; Wherein, compressor operating setting-up time M1 is the shortest working time that frosting appears in air-conditioning system in heating process, can artificially set according to the shortest different heat pamp.Meanwhile, system judges this off-premises station temperature difference △ T whether in frosting temperature difference region, that is, judges whether off-premises station temperature difference △ T is more than or equal to default frosting temperature difference △ T1, and default frosting temperature difference △ T1, as shown in Figure 2, enters step 3, otherwise repeating step 1; That is, the continuous operating time M that judges same off-premises station when system is more than or equal to compressor operating setting-up time M1, and this off-premises station temperature difference △ T is in frosting temperature difference region, enters step 3, otherwise repeating step 1.
Step 3, system is sent defrosting application to main frame.
Step 4, main frame receives after the defrosting application of any off-premises station, according to current system operation conditions, judges whether to allow defrosting, be to all off-premises stations, to send defrosting order, otherwise repeating step 1.
Step 5, receives after defrosting order when off-premises station, according to the operation of automatic defrosting program, defrosts.
Step 6, off-premises station is according to the default Defrost operation condition that exits, and whether judgement defrosting completes, and after defrosting completes, to main frame, sends the instruction that defrosted.The Defrost operation condition that exits in this example is, when off-premises station detects outdoor unit heat exchanger temperature >10 ℃,, when off-premises station detects >10 ℃ of outdoor unit heat exchanger temperature, this off-premises station has defrosted, close compressor, and defrosting is completed to instruction issue main frame.
Step 7, receives after the instruction that all off-premises stations have defrosted when main frame, to all off-premises stations, sends the order that defrosting finishes, and when off-premises station receives after the order that defrosting finishes, exits defrosting program, enters the program that normally heats.
In sum, the present invention, according to outdoor environment temperature and outdoor unit heat exchanger temperature, judges that the two temperature, whether in default defrosting region, judges whether compressor continuous operating time is more than or equal to compressor operating setting-up time, after meeting defrosting condition, to main frame application defrosting, when main frame receives after defrosting application, according to current system working order, can judgement defrost, if met after defrosting condition, main frame sends defrosting order to all off-premises stations, unifies defrosting; The advantage of unified defrosting is to make fast the outer machine of whole air-conditioning system all defrost, and then unification heats, and defrosting efficiency is improved, and has strengthened the heating capacity of convertible frequency air-conditioner.
Claims (4)
1. multi-connected machine convertible frequency air-conditioner defrosting control method, is characterized in that, comprises the following steps:
Step 1, system detect outdoor environment temperature and detect all outdoor unit heat exchanger temperature, calculate respectively the off-premises station temperature difference, and simultaneity factor detects the compressor continuous operating time of all off-premises stations;
Step 2, system judge whether the compressor continuous operating time of off-premises station is more than or equal to compressor operating setting-up time, judge that this off-premises station temperature difference whether in frosting temperature difference region, is to enter step 3 simultaneously, otherwise repeating step 1;
Step 3, system are sent defrosting application to main frame;
Step 4, main frame receive after the defrosting application of any off-premises station, according to current system operation conditions, judge whether to allow defrosting, and be to all off-premises stations, to send defrosting order, otherwise repeating step 1;
Step 5, after off-premises station is received defrosting order, according to the operation of automatic defrosting program, defrost.
2. multi-connected machine convertible frequency air-conditioner defrosting control method according to claim 1, is characterized in that, described multi-connected machine convertible frequency air-conditioner defrosting control method is further comprising the steps of:
Off-premises station is according to the default Defrost operation condition that exits, whether judgement defrosting completes, after defrosting completes, to main frame, send the instruction that defrosted, when main frame, receive after the instruction that all off-premises stations have defrosted, to all off-premises stations, send the order that defrosting finishes, when off-premises station receives after the order that defrosting finishes, exit defrosting program, enter the program that normally heats.
3. multi-connected machine convertible frequency air-conditioner defrosting control method according to claim 1 and 2, is characterized in that, described system detects outdoor environment temperature by outdoor environment temperature sensor.
4. multi-connected machine convertible frequency air-conditioner defrosting control method according to claim 3, is characterized in that, described system detects all outdoor unit heat exchanger temperature by outdoor heat exchanger sensor.
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| CN201410432896.0A CN104197594A (en) | 2014-08-28 | 2014-08-28 | Defrosting control method for multi-on-line variable-frequency air conditioners |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104503511A (en) * | 2014-12-31 | 2015-04-08 | 博耐尔汽车电气系统有限公司 | Controller for frosting test of air conditioner |
| CN104612950A (en) * | 2014-12-12 | 2015-05-13 | 中国石油天然气股份有限公司 | Control method and device of compressor air inlet filter element defrosting system |
| CN106016879A (en) * | 2016-05-13 | 2016-10-12 | 珠海格力电器股份有限公司 | Defrosting condition judgment method and device for unit and hot water unit |
| CN107917505A (en) * | 2017-11-07 | 2018-04-17 | 珠海格力电器股份有限公司 | A kind of multi-split air conditioner and its outdoor unit defrosting control method |
| CN108954677A (en) * | 2018-07-23 | 2018-12-07 | 广东美的暖通设备有限公司 | Defrosting control method, defrosting control system and the storage medium of multi-line system |
| CN110094833A (en) * | 2019-05-16 | 2019-08-06 | 滁州星联电子有限公司 | A kind of booting Defrost method of convertible frequency air-conditioner |
| CN110274352A (en) * | 2019-06-21 | 2019-09-24 | 广州惜源合同能源管理技术服务有限公司 | A kind of energy-saving optimization method and system |
| CN111219803A (en) * | 2020-01-09 | 2020-06-02 | 珠海格力电器股份有限公司 | Multi-split air conditioner and defrosting method thereof |
| CN112539521A (en) * | 2020-12-21 | 2021-03-23 | 珠海格力电器股份有限公司 | Air conditioner multi-split air conditioner and defrosting control method and device and storage medium thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101251323A (en) * | 2008-03-26 | 2008-08-27 | 四川长虹电器股份有限公司 | Control method for defrosting of splitting heat pump air conditioner |
| CN101303185A (en) * | 2008-05-22 | 2008-11-12 | 宁波奥克斯电气有限公司 | Defrosting method for heat pump type air conditioner |
| JP2009109165A (en) * | 2007-11-01 | 2009-05-21 | Panasonic Corp | Operation control method of air conditioner |
| CN101749906A (en) * | 2008-12-22 | 2010-06-23 | 同方人工环境有限公司 | Defrosting control method applicable to air-cooling heat pump unit |
| JP2011106745A (en) * | 2009-11-18 | 2011-06-02 | Daikin Industries Ltd | Outdoor unit of air conditioner |
-
2014
- 2014-08-28 CN CN201410432896.0A patent/CN104197594A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009109165A (en) * | 2007-11-01 | 2009-05-21 | Panasonic Corp | Operation control method of air conditioner |
| CN101251323A (en) * | 2008-03-26 | 2008-08-27 | 四川长虹电器股份有限公司 | Control method for defrosting of splitting heat pump air conditioner |
| CN101303185A (en) * | 2008-05-22 | 2008-11-12 | 宁波奥克斯电气有限公司 | Defrosting method for heat pump type air conditioner |
| CN101749906A (en) * | 2008-12-22 | 2010-06-23 | 同方人工环境有限公司 | Defrosting control method applicable to air-cooling heat pump unit |
| JP2011106745A (en) * | 2009-11-18 | 2011-06-02 | Daikin Industries Ltd | Outdoor unit of air conditioner |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612950A (en) * | 2014-12-12 | 2015-05-13 | 中国石油天然气股份有限公司 | Control method and device of compressor air inlet filter element defrosting system |
| CN104612950B (en) * | 2014-12-12 | 2016-08-31 | 中国石油天然气股份有限公司 | The control method of a kind of compressor air inlet filter element defrosting system and device |
| CN104503511A (en) * | 2014-12-31 | 2015-04-08 | 博耐尔汽车电气系统有限公司 | Controller for frosting test of air conditioner |
| CN106016879A (en) * | 2016-05-13 | 2016-10-12 | 珠海格力电器股份有限公司 | Defrosting condition judgment method and device for unit and hot water unit |
| CN106016879B (en) * | 2016-05-13 | 2018-07-13 | 珠海格力电器股份有限公司 | A kind of defrost condition judging method, device and Hot water units for unit |
| CN107917505A (en) * | 2017-11-07 | 2018-04-17 | 珠海格力电器股份有限公司 | A kind of multi-split air conditioner and its outdoor unit defrosting control method |
| CN108954677A (en) * | 2018-07-23 | 2018-12-07 | 广东美的暖通设备有限公司 | Defrosting control method, defrosting control system and the storage medium of multi-line system |
| CN108954677B (en) * | 2018-07-23 | 2021-02-23 | 广东美的暖通设备有限公司 | Defrosting control method and system of multi-split air conditioning system and storage medium |
| CN110094833A (en) * | 2019-05-16 | 2019-08-06 | 滁州星联电子有限公司 | A kind of booting Defrost method of convertible frequency air-conditioner |
| CN110274352A (en) * | 2019-06-21 | 2019-09-24 | 广州惜源合同能源管理技术服务有限公司 | A kind of energy-saving optimization method and system |
| CN111219803A (en) * | 2020-01-09 | 2020-06-02 | 珠海格力电器股份有限公司 | Multi-split air conditioner and defrosting method thereof |
| CN112539521A (en) * | 2020-12-21 | 2021-03-23 | 珠海格力电器股份有限公司 | Air conditioner multi-split air conditioner and defrosting control method and device and storage medium thereof |
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