CN1548864A - Defrosting control method for air conditioner - Google Patents
Defrosting control method for air conditioner Download PDFInfo
- Publication number
- CN1548864A CN1548864A CNA031298001A CN03129800A CN1548864A CN 1548864 A CN1548864 A CN 1548864A CN A031298001 A CNA031298001 A CN A031298001A CN 03129800 A CN03129800 A CN 03129800A CN 1548864 A CN1548864 A CN 1548864A
- Authority
- CN
- China
- Prior art keywords
- stage
- temperature
- air
- outdoor
- defrost operation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The defrosting control method for air conditioner includes the stage of making refrigerant enter the outdoor heat exchanger after driving the compressor; the stage of measuring outdoor air temperature and outdoor comb temperature after some period; the stage of performing defrosting operation in case that the difference between the outdoor air temperature and the outdoor comb temperature exceeds certain value; the stage of judging whether the defrosting operation time to reach 20 % of heating time; and the stage of ending defrosting operation in case that the 20 % heating time is reached. The present invention can defrost outdoor heat exchanger effectively and is favorable to heating operation.
Description
Technical field
The present invention relates to a kind of air-conditioner, particularly relate to a kind of defrosting control method that can solve the air-conditioner of the icing phenomenon of outdoor heat converter that occurs in the process of heating.
Background technology
In general, air-conditioner is that a kind of can the driving according to user's requirement heats circulation and cooling cycle system, makes the winter indoor air temperature become warm by heating operation, and makes the device that summer, indoor air temperature became nice and cool by refrigerating operation.In addition, the humidity in all right conditioning chamber of air-conditioner, and can make room air keep comfortable clean conditions.In the above-mentioned air-conditioner cyclic process, indoor heat converter composition when carrying out condenser function heats circulation, and indoor heat converter is then formed kind of refrigeration cycle when carrying out evaporator function.Fig. 1 is the air-conditioner refrigerating/heating circulation schematic diagram of prior art.As shown in Figure 1, when air-conditioner heats operation, compression refrigerant in compressor 3 at first, to send indoor heat converter 1 through the refrigerant of overcompression to then, at this moment, the refrigerant that flows in the indoor heat converter 1 can be to indoor heat release, indoor fan again with this heat with the form of hot blast to indoor discharge.Refrigerant by indoor heat converter 1 flows to outdoor heat converter 2 through expansion valve.At this moment, outdoor heat converter 2 will be carried out evaporation operation, and the cold air that outdoor fan discharges it again discharges.And when air-conditioner carries out refrigerating operation, at first compression refrigerant in compressor 3 will send outdoor heat converter 2 then through the refrigerant of overcompression to, and this refrigerant is condensed in outdoor heat converter 2, flow to indoor heat converter 1 through expansion valve then.Along with the driving of indoor heat converter 1, the refrigerant that flows in it will absorb heat from room air, and then to indoor discharge cold air.Air-conditioner is when heating operation, and being exposed to have the globule to condense on the outdoor outdoor heat converter 2.Along with heat operation continue carry out the phenomenon that will occur freezing of the heat-exchange surface on the outdoor heat converter 2.This situation can reduce the air themperature by indoor heat converter 1 output, thereby damages its heating performance.For remove above-mentioned freeze and make heat operation and continue to carry out, need carry out one time defrost operation at regular intervals.That is to say that defrost operation is the freezing and the refrigerating operation of the certain hour that carries out on the heat exchanger 2 that cover that occurs in the air conditioner heat-production process in order to remove.In carrying out this refrigerating operation process, outdoor heat converter 2 can be discharged heat, melts by this heat to cover its lip-deep freezing.That is to say,, thereby just need carry out defrost operation when conditioner efficiency is descended as long as on the air-conditioner outdoor heat converter 2 of prior art, produce to freeze and can not carry out effective heat exchange, thereby with the icing removal on the outdoor heat converter 2.Fig. 2 is the air-conditioner defrost operation control device pie graph of prior art.As shown in Figure 2, this control device is by the outdoor comb temperature induction part 4 of the compressor 3 of the signal input part 7 of the power supply 6 that power supply is provided to product, input service control signal, the display part 8 that shows user's input signal, compression refrigerant, measuring cell outer heat-exchanger 2 temperature and judge the air-conditioner defrosting condition and the control part of controlling 5 is formed.Be set with on the control part 5 and can judge whether produce icing reference temperature value on the outdoor heat converter 2.After the temperature of outdoor comb temperature induction part 4 measuring cell outer heat-exchangers 2, it can compare temperature value and the reference temperature value that records, if the temperature value that records is lower, then control part 5 can judge produced on the outdoor heat converter 2 icing, so begin to carry out defrost operation.When air-conditioner was connected power supply, the user can select defrost operation by signal input part 7, and at this moment compressor 3 is with compression refrigerant.Refrigerant through overcompression will send indoor heat converter 1 to, and indoor heat converter 1 can be by carrying out heat exchange with the air that is drawn into indoor set inside to indoor discharge heat.Refrigerant will send outdoor heat converter 2 to then, and the refrigerant in this heat exchanger is the low-temp low-pressure state.In refrigerant inflow outdoor heat exchanger 2, by outdoor comb temperature induction part 4 can measuring cell outer heat-exchanger 2 temperature.The temperature signal that outdoor comb temperature induction part 4 is measured will send control part 5 to, and control part 5 can compare a reference value of control signal that receives and the outdoor heat converter of having set 2, thus can judge whether produce on the outdoor heat converter 2 icing.If the judged result of control part 5 is to truly have to freeze to occur, will carry out defrost operation.That is, the control refrigerant flows in the other direction, makes the HTHP refrigerant inflow outdoor heat exchanger 2 through overcompression, so just can remove freezing of producing on the outdoor heat converter 2.After defrost operation carries out certain hour, come temperature on the measuring cell outer heat-exchanger 2 by outdoor comb temperature induction part 4 again,, then refrigerant is flowed in the other direction and heat operation again if the temperature value of measuring is higher than a reference value.As mentioned above, the air-conditioner of this prior art will carry out defrost operation as long as the temperature of outdoor heat converter 2 reaches below the uniform temperature, even not occurring freezing on the outdoor heat converter 2 also can carry out, the temperature of discharging air is descended, thereby influence heating effect.
Summary of the invention
In order to address the above problem, the object of the present invention is to provide a kind of defrosting control method that can determine whether carrying out the air-conditioner of defrost operation according to the judged result that whether occurs freezing on the outdoor heat converter.
In order to achieve the above object, the defrosting control method of air-conditioner provided by the invention comprises: after the driven compressor, make the stage of refrigerant inlet chamber outer heat-exchanger; Through measuring the stage of outside air temperature and the outer comb temperature of measuring cell behind the certain hour; And the temperature difference of outdoor air and outdoor comb is carried out the stage of defrost operation when surpassing certain value.
The defrosting control method of air-conditioner provided by the invention comprises: the stage of carrying out defrost operation; Judge whether the defrost operation time reaches the stage that heats the operating time 20%; Heat 20% of the operating time with reaching, then stop the stage of defrost operation as if the defrost operation time.
Whether the defrosting control method of air-conditioner provided by the invention is to utilize the temperature difference of outdoor air and outdoor comb to judge to have on the outdoor heat converter icing, and then whether decision carries out defrost operation.In addition, in carrying out the defrost operation process, the driving that it also can come the control room external fan according to the comb temperature of outdoor heat converter not only can defrost to outdoor heat converter effectively, and is beneficial to and heats operation.
Description of drawings
Be elaborated below in conjunction with the defrosting control method of the drawings and specific embodiments to air-conditioner of the present invention.
Fig. 1 is the air-conditioner refrigerating/heating circulation schematic diagram of prior art.
Fig. 2 is the air-conditioner defrost operation control device pie graph of prior art.
Fig. 3 is an air-conditioner defrost operation control device pie graph of the present invention.
Fig. 4 a and Fig. 4 b are respectively air-conditioner of the present invention and enter before the defrost operation and the control method flow chart when carrying out defrost operation.
The specific embodiment
As shown in Figure 3, air conditioner controlling device provided by the invention is made up of the compressor 3 of the signal input part 7 of the power supply 6 that power supply is provided to product, input service control signal, the display part 8 that shows user's input signal, compression refrigerant, the outdoor temperature induction part 9 of mensuration outside air temperature, the outdoor comb temperature induction part 10 of measuring cell outer heat-exchanger 2 temperature and the defrosting condition of judgement air-conditioning and the control part of controlling 5.Control part 5 surpasses when a certain amount of in the temperature difference of the comb temperature of outside air temperature and outdoor heat converter, can judge and draw the conclusion that whether needs to carry out defrost operation, so, change the flow direction of refrigerant in order to carry out defrost operation.And control part 5 also can the temperature according to outdoor heat converter judge whether to proceed defrost operation in the defrost operation process, thus the operation of control air-conditioning.Shown in Fig. 4 a, the control method that air-conditioner provided by the invention enters before the defrost operation comprises: product is connected the 100th stage of power supply; The user selects to heat the 110th stage of operation; The 120th stage of drive compression machine 3 and compression refrigerant; With inflow indoor heat exchanger 1, at this moment, the refrigerant that flows into indoor set will heat room air thus by indoor heat converter 1 to indoor discharge heat through the HTHP refrigerant of overcompression.Refrigerant by indoor heat converter 1 will be transformed into the low-temp low-pressure state, be sent to outdoor heat converter 2 then.At this moment, the refrigerant of inflow off-premises station will be by outdoor heat converter 2 to outdoor discharge cold air.In carrying out above-mentioned heat exchanging process, whether the driving time of compressor 3 is surpassed the 130th stage of judging in 10 minutes; If surpass 10 minutes, outdoor temperature induction part 9 will be measured outside air temperature, and outdoor comb temperature induction part 10 is with the 140th stage of the outer comb temperature of measuring cell; Outdoor temperature induction part 9 will judge whether the outside air temperature of being measured surpasses a ℃ the 150th stage; If more than a ℃, will judge that outdoor comb temperature that outdoor comb temperature induction part 10 is measured is whether in the 160th stage below-b ℃; If the judged result in the 160th stage is below-b ℃, through the 170th stage in 20 seconds; The temperature difference that outside air temperature and outdoor heat converter 2 comb temperature will be judged and draw to control part 5 is higher than a certain amount of conclusion, and then the 180th stage of defrost operation is carried out in control; If the comb temperature of outdoor heat converter 2 does not reach in the 160th stage-below the b ℃, the temperature difference between outdoor air and the outdoor comb just can not reach a certain amount of more than, control part 5 will proceed to heat the 200th stage of operation; If outside air temperature does not reach more than a ℃ in the 150th stage, will judge that whether the comb temperature value of outdoor heat converter 2 deducts the 190th stage of b ℃ of value less than outside air temperature; If really less than, then carried out for the 170th stage; If with the judged result in the 190th stage be the comb temperature value that can not satisfy outdoor heat converter deducts b ℃ of value less than outside air temperature condition, control part 5 with judgement draw the temperature difference between outdoor air and the outdoor comb do not reach a certain amount of more than, so do not need the conclusion that defrosts, so control part 5 will proceed to heat the 200th stage of operation.Present embodiment is to be the temperature difference that example illustrates outside air temperature and outdoor comb temperature with 9 ℃.Shown in Fig. 4 b, control method when air-conditioner provided by the invention carries out defrost operation comprises: if the temperature difference of outdoor air and outdoor comb is higher than a certain amount of (present embodiment is 9 ℃), control part 5 will be judged its satisfied defrosting condition, thereby carry out the 180th stage of defrost operation; Defrost operation time qualified heat the operating time 20% in, if more than this time, control part 5 will draw the conclusion that defrost operation is finished, and convert to automatically according to the setting of acquiescence then and heat operation.And even not at above-mentioned defrost operation within the time, if the comb temperature of outdoor heat converter 2 reaches more than the certain value, control part 5 also can draw the conclusion that defrost operation is finished, and changes into automatically then and heats operation.Like this, when carrying out the defrost operation in the 180th stage, judge whether the defrost operation time reaches the 300th stage that heats the operating time 20% earlier; If satisfy condition, will draw the 310th stage that defrost operation finishes conclusion; Operator scheme is transformed into the 320th stage that heats operation from defrost operation then; But if the judged result of control part 5 is not reach the defrost operation time to heat 20% of the operating time in the 300th stage, it will continue to judge whether outdoor comb temperature is higher than the 330th stage of a certain temperature (c ℃); Reached a certain temperature (c ℃) when above if the judged result in the 330th stage is outdoor comb temperature, will judge whether with lasting the 340th stage more than 30 seconds of the condition in the 330th stage; If can satisfy the condition in the 340th stage, illustrating defrosts finishes, and then finishes the 310th stage of defrost operation; Change into the 320th stage that heats operation then; But will carry out the 350th stage of drive chamber's external fan if fail in the 340th stage to be higher than c ℃ temperature maintenance more than 30 seconds, and proceed defrost operation then and got back to for the 180th stage; Do not rise to more than c ℃ if the judged result in the 330th stage is the comb temperature of outdoor heat converter 2, whether the comb temperature that will judge outdoor heat converter 2 is higher than the 360th stage of d ℃ (c ℃＞d ℃); Be higher than d ℃ (c ℃＞d ℃) if the judged result in the 360th stage is the comb temperature of outdoor heat converter 2, will carry out drive chamber's external fan, make icing the 370th stage that is melted into water and evaporates on the outdoor heat converter 2; To utilizing outdoor fan can make the comb temperature of outdoor heat converter 2 be lower than the 380th stage that e ℃ (c ℃＞d ℃＞e ℃) judged; If the judged result in the 380th stage is to make the comb temperature of outdoor heat converter 2 be lower than e ℃, show and fail to carry out effectively defrost operation, therefore carry out the 390th stage of close chamber's external fan; Proceed the 180th stage of defrost operation then.In sum, if the temperature of outdoor heat converter 2 is higher than c ℃, perhaps reached accounting for the defrost operation time that heats the operating time 20% that control part 5 sets, control part 5 will finish defrost operation and convert to and heat operation.Among the present invention, the outdoor temperature induction part 9 that is used for measuring outside air temperature is located on the off-premises station body, is used for the outdoor comb temperature induction part 10 of measuring cell outer heat-exchanger 2 temperature then to be located on the comb of outdoor heat converter 2.
Claims (5)
1, a kind of defrosting control method of air-conditioner is characterized in that: the defrosting control method of described air-conditioner comprises: after compressor (3) drives, make the 120th stage of refrigerant inlet chamber outer heat-exchanger (2); Through measuring the 130th, 140 stage of outside air temperature and the outer comb temperature of measuring cell behind the certain hour; And the temperature difference of outdoor air and outdoor comb is carried out the 180th stage of defrost operation when surpassing certain value.
2, the defrosting control method of air-conditioner according to claim 1, it is characterized in that: the defrosting control method of described air-conditioner also comprises: if determined outside air temperature and outdoor comb temperature have reached setting value and through after a while, to enter the 150th of defrost operation so, 160,170 stages.
3, a kind of defrosting control method of air-conditioner is characterized in that: the defrosting control method of described air-conditioner comprises: the 180th stage of carrying out defrost operation; Judge whether the defrost operation time reaches the 300th stage that heats the operating time 20%; Heat 20% of the operating time with reaching, then stop the 310th stage of defrost operation as if the defrost operation time.
4, the defrosting control method of air-conditioner according to claim 3 is characterized in that: the defrosting control method of described air-conditioner also comprises: the 330th stage of the outer comb temperature of measuring cell; In the defrost operation process,, then enter the 340th stage that defrost operation finishes if outdoor comb temperature continues to remain on more than the uniform temperature and keeps a period of time.
5, the defrosting control method of air-conditioner according to claim 4 is characterized in that: described defrost operation also comprises the 350th stage that can come control room external fan driving according to the temperature of outdoor comb.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031298001A CN1548864A (en) | 2003-05-20 | 2003-05-20 | Defrosting control method for air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031298001A CN1548864A (en) | 2003-05-20 | 2003-05-20 | Defrosting control method for air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1548864A true CN1548864A (en) | 2004-11-24 |
Family
ID=34322459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA031298001A Pending CN1548864A (en) | 2003-05-20 | 2003-05-20 | Defrosting control method for air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1548864A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101793429A (en) * | 2010-02-26 | 2010-08-04 | 广东美的电器股份有限公司 | Intelligent defrosting control method of split air conditioner |
| CN102016439A (en) * | 2008-04-21 | 2011-04-13 | 日立空调·家用电器株式会社 | Heat pump water heater |
| CN102767927A (en) * | 2012-07-09 | 2012-11-07 | 江苏西格玛电器有限公司 | Intelligent fuzzy control defrosting device |
| CN103868295A (en) * | 2014-04-01 | 2014-06-18 | 深圳麦克维尔空调有限公司 | Method for defrosting air conditioning unit and air conditioning unit |
| CN105157290A (en) * | 2014-05-26 | 2015-12-16 | 广东美的制冷设备有限公司 | Air conditioner and defrosting control method thereof |
| CN107449105A (en) * | 2017-07-05 | 2017-12-08 | 青岛海尔空调器有限总公司 | A kind of control method of air-conditioner defrosting |
| CN110470025A (en) * | 2019-08-04 | 2019-11-19 | 青岛海尔空调器有限总公司 | Control method and device, air-conditioning for air-conditioner defrosting |
| CN110470011A (en) * | 2019-08-02 | 2019-11-19 | 青岛海尔空调器有限总公司 | Control method and device, air-conditioning for air-conditioner defrosting |
| CN110470007A (en) * | 2019-08-02 | 2019-11-19 | 青岛海尔空调器有限总公司 | Control method and device, air-conditioning for air-conditioner defrosting |
-
2003
- 2003-05-20 CN CNA031298001A patent/CN1548864A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102016439B (en) * | 2008-04-21 | 2013-11-06 | 日立空调·家用电器株式会社 | Heat pump water heater |
| CN102016439A (en) * | 2008-04-21 | 2011-04-13 | 日立空调·家用电器株式会社 | Heat pump water heater |
| 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 |
| CN101793429A (en) * | 2010-02-26 | 2010-08-04 | 广东美的电器股份有限公司 | Intelligent defrosting control method of split air conditioner |
| CN102767927B (en) * | 2012-07-09 | 2015-07-01 | 江苏西格玛电器有限公司 | Intelligent fuzzy control defrosting device |
| CN102767927A (en) * | 2012-07-09 | 2012-11-07 | 江苏西格玛电器有限公司 | Intelligent fuzzy control defrosting device |
| CN103868295A (en) * | 2014-04-01 | 2014-06-18 | 深圳麦克维尔空调有限公司 | Method for defrosting air conditioning unit and air conditioning unit |
| CN105157290A (en) * | 2014-05-26 | 2015-12-16 | 广东美的制冷设备有限公司 | Air conditioner and defrosting control method thereof |
| CN105157290B (en) * | 2014-05-26 | 2017-10-13 | 广东美的制冷设备有限公司 | Air conditioner and its defrosting control method |
| CN107449105A (en) * | 2017-07-05 | 2017-12-08 | 青岛海尔空调器有限总公司 | A kind of control method of air-conditioner defrosting |
| CN107449105B (en) * | 2017-07-05 | 2019-07-02 | 青岛海尔空调器有限总公司 | A kind of control method of air-conditioner defrosting |
| CN110470011A (en) * | 2019-08-02 | 2019-11-19 | 青岛海尔空调器有限总公司 | Control method and device, air-conditioning for air-conditioner defrosting |
| CN110470007A (en) * | 2019-08-02 | 2019-11-19 | 青岛海尔空调器有限总公司 | Control method and device, air-conditioning for air-conditioner defrosting |
| CN110470025A (en) * | 2019-08-04 | 2019-11-19 | 青岛海尔空调器有限总公司 | Control method and device, air-conditioning for air-conditioner defrosting |
| CN110470025B (en) * | 2019-08-04 | 2021-12-21 | 重庆海尔空调器有限公司 | Control method and device for defrosting of air conditioner and air conditioner |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106556106B (en) | Control method and device for self-cleaning of indoor unit of air conditioner | |
| CN107166639B (en) | Air conditioner defrosting control method and control device and air conditioner | |
| CN102878737B (en) | Method for implementing normal heating of indoor units of modular multi-unit device during defrosting | |
| CN107289578B (en) | Air conditioner and defrosting control method thereof | |
| CN101430127A (en) | Air conditioner control method in indoor heating state | |
| CN1987235B (en) | Defrost operation control method for heating and cooling two-purpose air conditioner | |
| CN101476801B (en) | Continuously heating and defrosting heat pump type air conditioner | |
| CN104515330A (en) | Method for controlling defrosting operation of air-conditioner | |
| CN1892131A (en) | Air-conditioner and its defrosting control method | |
| CN101749905A (en) | Air-conditioner continuous heat-supply and defrost control method | |
| CN102331068B (en) | Defrosting method of air conditioner | |
| CN112797593A (en) | Self-cleaning control method and single-cooling type air conditioner | |
| CN101644511A (en) | Parallel flow evaporator and anti-freezing method thereof | |
| CN101975439A (en) | Defrosting operation control method for air conditioner | |
| CN107940677A (en) | A kind of control method and device for slowing down air-conditioner outdoor unit frosting | |
| CN111981654B (en) | Control method for optimizing energy efficiency of air conditioner | |
| CN1548864A (en) | Defrosting control method for air conditioner | |
| CN102175052B (en) | Air conditioner and control method thereof | |
| CN100541035C (en) | The outdoor machine defrosting device of air-conditioner and control method thereof | |
| CN114811876A (en) | Air conditioner and control method thereof | |
| CN202993410U (en) | Air conditioner outdoor unit with built-in auxiliary electric heater | |
| CN102141282A (en) | Heating method of air conditioner | |
| CN115031351A (en) | Air conditioner and defrosting control method thereof | |
| CN108413560A (en) | A kind of air conditioner indoor unit self-cleaning system and its control method | |
| CN110608510B (en) | Air conditioner, outdoor unit, defrosting device, defrosting control method and defrosting control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |