CN103256766B - Method for controlling intelligent defrosting of air conditioner - Google Patents
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Abstract
The invention discloses a method for controlling intelligent defrosting of an air conditioner. The method comprises the step of detecting indoor environment temperature T1, temperature T2 of an indoor heat exchanger and continuous operation time M of a compressor. When the temperature T2 of the indoor heat exchanger is less than setting temperature T4, a temperature difference delta T between the temperature T2 of the indoor heat exchanger and the indoor environment temperature T1 is less than setting temperature T3, the continuous operation time M of the compressor is greater than or equal to setting time M1, and a drop-out value of the temperature difference delta T is greater than or equal to a setting value TS1 or time t used every time when the temperature difference delta T drops by a setting value TS2 is in a range of setting time, the air conditioner operates to defrost. Due to the fact that the relationship of the temperature of the indoor heat exchanger and the indoor environment temperature is detected, the frosting conditions of an outdoor heat exchanger are judged so that whether defrosting is carried out or not can be selected, accordingly, unnecessary defrosting operation is reduced and heating capacity of the air conditioner is increased.
Description
Technical field
The present invention relates to air-conditioning technical field, be specifically related to a kind of control method of air-conditioner intelligent defrosting.
Background technology
After operation, its outdoor heat exchanger understands frosting to existing heat pump type air conditioner, thus affects the heating efficiency of air-conditioner, and therefore air-conditioner needs to carry out defrosting process after heating operation certain hour.Traditional Defrost method is the frosting situation by judging outdoor heat exchanger at outdoor heat exchanger set temperature sensor, and starts Defrost operation according to frosting situation.
Temperature according to outdoor heat exchanger defrosts, and easily occurs the operation of defrosting by mistake.For solving the problem, occur that the temperature by judging indoor heat exchanger controls the method for defrosting, as in the patent No. be 02149634.X Chinese patent in namely disclose a kind of method, but the method that the existing temperature by judging indoor heat exchanger controls to defrost still exists unnecessary Defrost operation, thus reduce the effective time of air conditioner heat-production operation.
Summary of the invention
The object of the present invention is to provide a kind of control method of air-conditioner intelligent defrosting, unnecessary Defrost operation can be reduced by the method, increase the effective time that air conditioner heat-production runs, the heating capacity improving air-conditioner.
To achieve these goals, the invention provides a kind of control method of air-conditioner intelligent defrosting, comprising:
S1, detects indoor environment temperature T1 by indoor environment temperature sensor, carrys out heat exchange temperature T2 in sensing chamber by indoor heat exchanger sensor;
S2, detects compressor continuous operating time M, judges whether compressor continuous operating time M is more than or equal to setting-up time M1;
S3, indoor heat exchanger temperature T2 and indoor environment temperature T1 is compared, judge whether the temperature difference △ T between indoor heat exchanger temperature T2 and indoor environment temperature T1 is less than design temperature T3, and judge whether the drop-out value of temperature difference △ T is more than or equal to setting value TS1 or judges temperature difference △ T often decline setting value TS2 time t used whether within the scope of the setting-up time preset;
S4, judges whether indoor heat exchanger temperature T2 is less than default design temperature T4;
S5, be less than design temperature T4 at indoor heat exchanger temperature T2, temperature difference △ T is less than design temperature T3, drop-out value that compressor continuous operating time M is more than or equal to setting M1 and temperature difference △ T is when being more than or equal to setting value TS1 or temperature difference △ T often decline setting value TS2 the time used, t was within the scope of setting-up time, make air-conditioner enter Defrost operation; And
S6, arranges the condition of Defrost operation of exiting, meet exit the condition of Defrost operation time, exit Defrost operation.
Preferably, in S3, indoor heat exchanger temperature T2 and indoor environment temperature T1 after a certain time of operation, then compares by compressor.
Preferably, in S3, design temperature T3 presets different values according to the windscreen of compressor continuous operating time M and indoor fan.
Preferably, in S3, when the drop-out value of a temperature difference △ T being more than or equal to setting value TS1 or temperature difference △ T often decline setting value TS2 if occur the time used, t was within the scope of setting-up time, then no longer carry out this and judge until exit Defrost operation.
Preferably, in S3, setting value TS2< setting value TS1.
Preferably, in S4, design temperature T4 sets different values according to the windscreen of air-conditioner, and windscreen is lower, and the value of design temperature T4 is larger.
Preferably, in S6, preset the Defrost operation time of certain hour, through the Defrost operation time backed off after random Defrost operation preset.
Preferably, in S6, the Defrost operation time arranges different values according to the scope of compressor continuous operating time M.
Preferably; judge whether indoor set enters anti-cold wind and run and occur that indoor fan turns gentle breeze shelves or shutdown; when occurring that indoor fan turns gentle breeze shelves or shuts down entering anti-cold wind and running; if compressor continuous operating time M is more than or equal to setting-up time M1; and temperature difference △ T often decline setting value TS2 time t used within the scope of setting-up time or the drop-out value of temperature difference △ T be more than or equal to setting value TS3, make air-conditioner enter Defrost operation.
Preferably, described setting value TS3 < setting value TS1.
Because the control method of air-conditioner intelligent defrosting of the present invention is by the relation in sensing chamber between heat exchange temperature and indoor environment temperature, judge the frosting situation of outdoor heat exchanger, select accordingly to defrost, thus reduce unnecessary Defrost operation, increase the effective time that air conditioner heat-production runs, improve the heating capacity of air-conditioner.
Accompanying drawing explanation
Fig. 1 is the flow chart of the control method of air-conditioner intelligent defrosting in a preferred embodiment of the present invention.
Fig. 2 is the flow chart that the control method of air-conditioner intelligent defrosting in a preferred embodiment of the present invention comprises anti-cold wind operation.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Detailed description of the invention
Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The invention provides a kind of control method of air-conditioner intelligent defrosting, with reference to Fig. 1, in one embodiment of the invention, this control method comprises:
S1, arranges indoor environment temperature sensor and indoor heat exchanger sensor, detects indoor environment temperature T1 by indoor environment temperature sensor, carrys out heat exchange temperature T2 in sensing chamber by indoor heat exchanger sensor,
S2, detects the compressor continuous operating time M of air-conditioner, judges whether compressor continuous operating time M is greater than setting-up time M1;
S3, indoor heat exchanger temperature T2 and indoor environment temperature T1 is compared, judge whether the temperature difference △ T between indoor heat exchanger temperature T2 and indoor environment temperature T1 is less than design temperature T3, and judge whether the drop-out value of temperature difference △ T is more than or equal to setting value TS1 or judges temperature difference △ T often decline setting value TS2 time t used whether within the scope of the setting-up time preset;
S4, judges whether indoor heat exchanger temperature T2 is less than design temperature T4;
S5, be less than design temperature T4 at indoor heat exchanger temperature T2, temperature difference △ T is less than design temperature T3, drop-out value that compressor continuous operating time M is greater than setting M1 and temperature difference △ T is when being more than or equal to setting value TS1 or temperature difference △ T often decline setting value TS2 the time used, t was within the scope of setting-up time, make air-conditioner enter Defrost operation; And
S6, arrange exit Defrost operation condition, meet exit Defrost operation condition time, exit Defrost operation.
In S3, indoor heat exchanger temperature T2 and indoor environment temperature T1 after a certain time of operation, then compares by compressor.
In S3, design temperature T3 presets different values according to the windscreen of the indoor fan of compressor continuous operating time M and air-conditioner, concrete is, when compressor continuous operating time M is between the setting-up time M1 preset and default setting-up time M4, the design temperature T3 that temperature difference △ T need meet is as follows:
| Wind shelves | △T |
| High wind shelves | ＜T31 |
| Apoplexy shelves | ＜T32 |
| Low wind shelves | ＜T33 |
Wherein design temperature T31, design temperature T32 and design temperature T33 are respectively corresponding temperature value, and it arranges different values according to different type of machines, wherein design temperature T31 < design temperature T32 < design temperature T33;
When compressor continuous operating time M is greater than setting-up time M4, the design temperature T3 that temperature difference △ T need meet is as follows:
| Wind shelves | △T |
| High wind shelves | ＜T31+2℃ |
| Apoplexy shelves | ＜T32 +2℃ |
| Low wind shelves | ＜T33+2℃ |
In S3, judge whether the drop-out value of temperature difference △ T is more than or equal to setting value TS1, namely judge △ △ T=maximum temperature difference △ Tmax-temperature difference △ T >=setting value TS1.The drop-out value judging temperature difference △ T is set when whether being more than or equal to the condition of setting value TS1 or temperature difference △ T often decline setting value TS2 time t used whether within the scope of setting-up time, in actual applications, one of can arrange in above-mentioned two conditions judges, also can arrange simultaneously above-mentioned in two conditions, by air-conditioner according to ruuning situation, judge whether to meet one of them.Air-conditioner is in operation, when the drop-out value of a temperature difference △ T being more than or equal to setting value TS1 or temperature difference △ T often decline setting value TS2 if occur the time used, t be within the scope of setting-up time, then no longer carry out this to judge until exit Defrost operation, and setting value TS2< setting value TS1.
In S4, design temperature T4 sets different values according to the windscreen of air-conditioner, and concrete is:
| Wind shelves | |
| High wind shelves | < design temperature T43 |
| Apoplexy shelves | < design temperature T42 |
| Low wind shelves | < design temperature T41 |
Wherein, design temperature T43 < design temperature T42 < design temperature T41.
In S6, preset the Defrost operation time of certain hour, the Defrost operation time backed off after random Defrost operation that warp is preset, and the Defrost operation time arranges different values according to the scope of compressor continuous operating time M.
Be less than design temperature T4 at indoor heat exchanger temperature T2, temperature difference △ T is less than design temperature T3, compressor continuous operating time M is greater than the drop-out value of setting M1 and the temperature difference △ T when being more than or equal to setting value TS1, the Defrost operation time presets as follows:
| Compressor continuous operating time M(minute) | The Defrost operation time (minute) | |
| Situation 1 | M =M1 | DT |
| Situation 2 | M1＜M≤M2 | DT1 |
| Situation 3 | M2＜M≤M3 | DT1+1 |
| Situation 4 | M3＜M≤M4 | DT1+2.5 |
| Situation 5 | M4＜M | DT1+4.5 |
Be less than design temperature T4 at indoor heat exchanger temperature T2, temperature difference △ T is less than design temperature T3, compressor continuous operating time M is greater than setting M1 and temperature difference △ T often decline setting value TS2 when the time used, t was within the scope of setting-up time, the Defrost operation time is set as follows:
| Compressor continuous operating time M(minute) | The Defrost operation time (minute) | |
| Situation 1 | M=M1 | DT-3 |
| Situation 2 | M1＜M≤M2 | DT1-2.5 |
| Situation 3 | M2＜M≤M3 | DT1-1.5 |
| Situation 4 | M3＜M≤M4 | DT1 |
| Situation 5 | M4＜M | DT1+1 |
Refer to Fig. 2, the control method of air-conditioner intelligent defrosting of the present invention also judges that the whether anti-cold wind of the indoor set of air-conditioner runs and occurs that indoor fan turns gentle breeze shelves or shutdown, if when the anti-cold wind of the indoor set of air-conditioner runs and occurs that indoor fan turns gentle breeze shelves or shuts down, when compressor continuous operating time M is more than or equal to setting-up time M1, and temperature difference △ T often decline setting value TS2 time t used within the scope of setting-up time or the drop-out value of temperature difference △ T be more than or equal to setting value TS3(and △ △ T=maximum temperature difference △ Tmax-temperature difference △ T >=setting value TS3, and setting value TS3 < setting value TS1), air-conditioner is made to enter Defrost operation, and through Defrost operation time DT backed off after random Defrost operation, as long as this and existing Defrost method indoor set under worst cold case occurs that because anti-cold wind runs the situation that indoor fan turns gentle breeze or shutdown just enters compared with Defrost operation, existing Defrost method can be avoided also to carry out Defrost operation when there is no frosting, thus avoid defrosting by mistake.
For carrying out more detailed explanation to the control method of air-conditioner intelligent defrosting of the present invention, be described with the embody rule operation when high wind shelves run below.
Embody rule operation one, by judging whether indoor heat exchanger temperature T2 is less than design temperature T4, whether temperature difference △ T is less than design temperature T3, whether compressor continuous operating time M is greater than the drop-out value setting M1 and temperature difference △ T whether is more than or equal to setting value TS1 to carry out Defrost operation as follows:
(1) the design temperature T31 preset is 13 DEG C, and the design temperature T43 preset is 43 DEG C, and the setting value TS2 preset is 4 DEG C, and the setting-up time M1 preset is 45 minutes;
(2) compressor operating is after 8 minutes, detects indoor environment temperature T1 by indoor environment temperature sensor, carrys out heat exchange temperature T2 in sensing chamber by indoor heat exchanger sensor;
(3) if the temperature difference △ T >=design temperature T3=13 DEG C, indoor heat exchanger temperature T2 >=design temperature T43=43 DEG C, temperature difference △ T drop-out value < setting value TS1=4 DEG C or compressor continuous operating time M < setting-up time M1=45 minute, then air-conditioner does not enter Defrost operation;
(4) if drop-out value >=setting value TS1=4 DEG C and the compressor continuous operating time M >=setting-up time M1=45 minute of temperature difference △ T < design temperature T3=13 DEG C, indoor heat exchanger temperature T2 < design temperature T43=43 DEG C, temperature difference △ T, then air-conditioner enters Defrost operation;
(5) Defrost operation following Defrost operation time backed off after random Defrost operation is entered at air-conditioner;
| Compressor continuous operating time M(minute) | The Defrost operation time (minute) | |
| Situation 1 | M=45 | DT=10 |
| Situation 2 | 45＜M≤60 | DT1=7.5 |
| Situation 3 | 60＜M≤90 | 8.5 |
| Situation 4 | 90＜M≤120 | 10 |
| Situation 5 | 120＜M | 12 |
Embody rule operation two, by judging whether indoor heat exchanger temperature T2 is less than design temperature T4, whether temperature difference △ T is less than design temperature T3, whether compressor continuous operating time M is greater than sets M1 and temperature difference △ T often decline setting value TS2 time used t within the scope of setting-up time, whether carry out Defrost operation as follows:
(1) the design temperature T31 preset is 13 DEG C, and the design temperature T43 preset is 43 DEG C, and the setting-up time M1 preset is 45 minutes, and the setting value TS2 preset is 1 DEG C, and temperature difference △ T often decline setting value TS2 time t used scope is 1min to 20 min;
(2) compressor operating is after 8 minutes, detects indoor environment temperature T1 by indoor environment temperature sensor, carrys out heat exchange temperature T2 in sensing chamber by indoor heat exchanger sensor;
(3) if temperature difference △ is T >=design temperature T3=13 DEG C, indoor heat exchanger temperature T2 >=design temperature T43=43 DEG C, temperature difference △ T often lower 1 DEG C of time t≤1min used or >=20 min or compressor continuous operating time M < setting-up time M1=45 minute, then air-conditioner does not enter Defrost operation;
(4) if temperature difference △ T < design temperature T3=13 DEG C, indoor heat exchanger temperature T2 < design temperature T43=43 DEG C, 1min < temperature difference △ T be often lower 1 DEG C of time t < 20 min used and compressor continuous operating time M >=setting-up time M1=45 minute, then air-conditioner enters Defrost operation;
(5) Defrost operation following Defrost operation time backed off after random Defrost operation is entered at air-conditioner;
| Compressor continuous operating time M(minute) | The Defrost operation time (minute) | |
| Situation 1 | M=45 | 7 |
| Situation 2 | 45＜M≤60 | 5 |
| Situation 3 | 60＜M≤90 | 6 |
| Situation 4 | 90＜M≤120 | 7.5 |
| Situation 5 | 120＜M | 8.5 |
Embody rule operation three; when the anti-cold wind of the indoor set of air-conditioner runs and occurs that indoor fan turns gentle breeze shelves or shuts down, set M1 and temperature difference △ T often decline setting value TS2 time used t by judging whether compressor continuous operating time M is greater than within the scope of setting-up time, whether carry out Defrost operation as follows:
(1) the setting-up time M1 preset is 45 minutes, and the setting value TS2 preset is 1 DEG C, and the temperature difference △ T often decline setting value TS2 time t used scope preset is 1min to 20 min;
(2) compressor operating is after 8 minutes, detects indoor environment temperature T1 by indoor environment temperature sensor, carrys out heat exchange temperature T2 in sensing chamber by indoor heat exchanger sensor;
(3) if temperature difference △ T is often lower 1 DEG C of time t≤1min used or >=20 min or compressor continuous operating time M < setting-up time M1=45 minute, then air-conditioner does not enter Defrost operation;
(4) if 1min < temperature difference △ T is often lower 1 DEG C of time t < 20 min used and compressor continuous operating time M >=setting-up time M1=45 minute, then air-conditioner enters Defrost operation;
(5) the Defrost operation time backed off after random Defrost operation of Defrost operation 10 points is entered at air-conditioner.
Embody rule operation four; when the anti-cold wind of the indoor set of air-conditioner runs and occurs that indoor fan turns gentle breeze shelves or shuts down, by judging whether compressor continuous operating time M is greater than the drop-out value setting M1 and temperature difference △ T and whether is more than or equal to setting value TS3 to carry out Defrost operation as follows:
(1) the setting-up time M1 preset is 45 minutes, and the setting value TS3 preset is 2 DEG C;
(2) compressor operating is after 8 minutes, detects indoor environment temperature T1 by indoor environment temperature sensor, carrys out heat exchange temperature T2 in sensing chamber by indoor heat exchanger sensor;
(3) if the drop-out value < setting value TS3=2 of temperature difference △ T DEG C or compressor continuous operating time M < setting-up time M1=45 minute, then air-conditioner does not enter Defrost operation;
(4) if the drop-out value >=setting value TS3=2 of temperature difference △ T DEG C and compressor continuous operating time M >=setting-up time M1=45 minute, then air-conditioner enters Defrost operation;
(5) the Defrost operation time backed off after random Defrost operation of Defrost operation 10 points is entered at air-conditioner.
Because the control method of air-conditioner intelligent defrosting of the present invention is by the relation in sensing chamber between heat exchange temperature and indoor environment temperature, judge the frosting situation of outdoor heat exchanger, select accordingly to defrost, thus reduce unnecessary Defrost operation, increase the effective time that air conditioner heat-production runs, improve the heating capacity of air-conditioner.
In addition, because the control method of air-conditioner intelligent defrosting of the present invention can according to different defrosting condition, the automatic selection corresponding Defrost operation time, the shorter Defrost operation time is selected when frosting is not serious, this further adds effective heating operation time, improves heating capacity, this can be avoided causing temperature sensor to detect because indoor heat exchanger temperature is lower and causing and cannot exit Defrost operation compared with exiting Defrost operation with the temperature of the existing indoor heat exchanger detected according to temperature sensor.
In addition, because the control method of air-conditioner intelligent defrosting of the present invention can by judging temperature difference △ T often decline setting value TS2 time t used whether within the scope of setting-up time, this efficiently solves because outdoor pipe temperature change is unhappy, outdoor heat exchanger frosting on a small quantity and not easily reaches conventional defrosting condition, thus cause air-conditioner to affect a difficult problem for heating effect for a long time with frost runs, therefore, further can improve defrosting efficiency, improve heating effect.
These are only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. a control method for air-conditioner intelligent defrosting, is characterized in that, comprising:
S1, detects indoor environment temperature T1 by indoor environment temperature sensor, carrys out heat exchange temperature T2 in sensing chamber by indoor heat exchanger sensor;
S2, detects compressor continuous operating time M, judges whether compressor continuous operating time M is more than or equal to setting-up time M1;
S3, indoor heat exchanger temperature T2 and indoor environment temperature T1 is compared, judge whether the temperature difference △ T between indoor heat exchanger temperature T2 and indoor environment temperature T1 is less than design temperature T3, and judge whether the drop-out value of temperature difference △ T is more than or equal to setting value TS1 or judges temperature difference △ T often decline setting value TS2 time t used whether within the scope of the setting-up time preset;
S4, judges whether indoor heat exchanger temperature T2 is less than default design temperature T4;
S5, be less than design temperature T4 at indoor heat exchanger temperature T2, temperature difference △ T is less than design temperature T3, drop-out value that compressor continuous operating time M is more than or equal to setting M1 and temperature difference △ T is when being more than or equal to setting value TS1 or temperature difference △ T often decline setting value TS2 the time used, t was within the scope of setting-up time, make air-conditioner enter Defrost operation; And
S6, arranges the condition of Defrost operation of exiting, meet exit the condition of Defrost operation time, exit Defrost operation.
2. the control method of air-conditioner intelligent defrosting as claimed in claim 1, it is characterized in that, in S3, indoor heat exchanger temperature T2 and indoor environment temperature T1 after a certain time of operation, then compares by compressor.
3. the control method of air-conditioner intelligent defrosting as claimed in claim 1, it is characterized in that, in S3, design temperature T3 presets different values according to the wind shelves of compressor continuous operating time M and indoor fan.
4. the control method of air-conditioner intelligent defrosting as claimed in claim 1, it is characterized in that, in S3, when the drop-out value of a temperature difference △ T being more than or equal to setting value TS1 or temperature difference △ T often decline setting value TS2 if occur the time used, t was within the scope of setting-up time, then no longer carry out this and judge until exit Defrost operation.
5. the control method of air-conditioner intelligent defrosting as claimed in claim 1, is characterized in that, in S3, and setting value TS2< setting value TS1.
6. the control method of air-conditioner intelligent defrosting as claimed in claim 1, it is characterized in that, in S4, design temperature T4 sets different values according to the wind shelves of air-conditioner, and wind shelves are lower, and the value of design temperature T4 is larger.
7. the control method of air-conditioner intelligent defrosting as claimed in claim 1, is characterized in that, in S6, presets the Defrost operation time of certain hour, through the Defrost operation time backed off after random Defrost operation preset.
8. the control method of air-conditioner intelligent defrosting as claimed in claim 7, it is characterized in that, in S6, the Defrost operation time arranges different values according to the scope of compressor continuous operating time M.
9. the control method of air-conditioner intelligent defrosting as claimed in claim 1; it is characterized in that; judge whether the indoor set of air-conditioner enters anti-cold wind and run and occur that indoor fan turns gentle breeze shelves or shutdown; when occurring that indoor fan turns gentle breeze shelves or shuts down entering anti-cold wind and running; if compressor continuous operating time M is more than or equal to setting-up time M1; and temperature difference △ T often decline setting value TS2 time t used within the scope of setting-up time or the drop-out value of temperature difference △ T be more than or equal to setting value TS3, make air-conditioner enter Defrost operation.
10. the control method of air-conditioner intelligent defrosting as claimed in claim 9, is characterized in that, described setting value TS3 < setting value TS1.
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| CN115289610B (en) * | 2022-06-30 | 2023-07-25 | 海信空调有限公司 | Air conditioner and defrosting control method thereof |
| CN115095955B (en) * | 2022-06-30 | 2023-07-25 | 海信空调有限公司 | Air conditioner and defrosting control method thereof |
| CN115654661A (en) * | 2022-08-19 | 2023-01-31 | 珠海格力电器股份有限公司 | Air conditioner anti-freezing control method and air conditioner |
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