CN102538126B - Defrosting control method of heat-pump type air conditioner - Google Patents
Defrosting control method of heat-pump type air conditioner Download PDFInfo
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- CN102538126B CN102538126B CN201010604106.4A CN201010604106A CN102538126B CN 102538126 B CN102538126 B CN 102538126B CN 201010604106 A CN201010604106 A CN 201010604106A CN 102538126 B CN102538126 B CN 102538126B
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Abstract
The invention discloses a defrosting control method of a heat-pump type air conditioner. Manual intervention measures aiming at defrosting mode are arranged to prevent false operation, and the defrosting mode of the air conditioner can be intervened manually only in the heating mode and normal operation of the air conditioner. For preventing the false operation made by users in daily air conditioner operation, no special manual intervention key is arranged on an air conditioner remote controller and an air conditioner operation panel, and a manual intervention function is achieved through key combination and seldom-used operation mode combination. The defrosting control method of the heat-pump type air conditioner can avoid false defrosting motion caused by different environment, regions and other factors and can be switched to manual defrosting mode to ensure complete defrosting under the condition that incomplete defrosting is caused by uncertain factors, thereby avoiding vicious circle and improving the heating efficiency of the heat-pump type air conditioner.
Description
Technical field:
The present invention relates to a kind of defrosting control method of heat pump type air conditioner.
Background technology:
In traditional heat pump type air conditioner, mostly adopt following methods defrosting: 1, the indirect determining method of indoor coil pipe " indoor coil pipe rate of change+Time Method " judges whether frosting of outdoor heat exchanger, by the rate of change of the inner coil pipe temperature T h of sensing chamber, the cooperation time is controlled (determine and prevent frequent defrosting a minimum running time) again; 2, the coil temperature sensor on outdoor heat converter judges the frosting situation of outdoor heat converter.But two kinds of Defrost methods respectively have its applicable region and weather, environment, have certain shortcoming under other environmental condition, are difficult to adapt to all environments for use.There is mistake defrosting and defrosting situation not to the utmost in capital.Adopt the indirect determining method of indoor coil pipe " temperature difference-Time Method " to judge whether frosting of outdoor heat exchanger, depend merely on indoor coil pipe rate of change as judgement frosting whether foundation, can cause erroneous judgement, there is mistake defrosting and situation about not defrosting, do not defrost and finally cause frost layer very thick, defrosting not to the utmost.Because rate of temperature change is affected by frosting not only only, other many factors also can be influential to rate of change, and as refrigerant reduces, outdoor environment temperature reduces, and indoor fan air quantity changes, indoorly have other heating source etc.; Coil temperature sensor on employing outdoor heat converter judges the frosting situation of outdoor heat converter, although accuracy is higher under certain environmental condition, but along with the variation of environmental condition, particularly when outdoor environment temperature itself is very low, lower than below 0 ℃, and when relative humidity is also low, even if coil temperature has reached the frosting temperature of setting, but still may not reach air dew point temperature, now fin frost-free, but be mistaken for frosting, so can not reduce False Rate.And exit defrosting according to this coil temperature condition, often cause again defrosting unclean.Defrost unclean, will be directly connected to the safety of air-conditioning products and reliably use.When the frosting of outdoor condenser surface, and the automatic defrosting system of air-conditioning own fails its change to go, though or change the water-setting that goes to remain on the heat exchanger surface pearl of build-uping ice, in next automatic defrosting cycle, yet its change is not gone; Through accumulation after a while, finally form ice cube, and more long-pending thicker.If now outdoor fan motor drives fan blade rotation to get on ice cube, just easily cause fan blade to fracture or motor rotation blockage, consequence is hardly imaginable, and (after motor rotation blockage, electric current increases, and electric machine temperature rise constantly raises; Without any protection or safeguard measure, easily causing the situations such as short-circuit between conductors and motor burn out malfunctioning in the situation that).Because heat exchanger of air conditioner outdoor unit copper pipe surface is frozen or frosting, heat can not get conversion fully and absorbs, and pipe temperature will constantly decline, so complete machine heating performance will weaken greatly, and now compressor load can increase gradually, and affects service life.And the temperature that indoor set blows out reduces gradually, also can bring uncomfortable impression to user.
Mistake defrosting has brought the loss of heating capacity and the decline of heating effect, and defrosting can bring larger hidden danger not to the utmost, run into defrosting situation not to the utmost, often only have to adopt outdoor heat converter is watered to boiling water, the methods such as cross valve line, forced refrigeration of extracting solve.And China is vast in territory, natural climate is various, runs into the problems referred to above unavoidable, so defrosting problem is a great problem of puzzlement heat pump type air conditioner always.
Summary of the invention:
For overcoming the defect of prior art, the object of the present invention is to provide a kind of defrosting control method of heat pump type air conditioner, provide multiple Defrost mode: intelligent defrosting, outer disk defrost, manually defrost available, the mistake defrosting action causing with the difference of avoiding because of factors such as environment, regions, and in the situation that the defrosting causing due to uncertain factor not to the utmost, switch to manual defrosting mode, guarantee that defrosting is clean, avoid vicious circle, improve the heating efficiency of heat pump type air conditioner.
Technical solution problem of the present invention adopts following technical scheme:
A defrosting control method for heat pump type air conditioner, it is 1 that intelligent defrosting code is set, outer disk defrosting code is 0, and defrosting code is sent into memory chip; The defrosting pattern of entering is:
A, judge that air-conditioning is whether in heating mode and working;
B, whether select manual intervention;
If judgment result is that of A, B be, judge again whether manual defrosting finishes, if do not finish, return to B and rejudge; If manually defrosting finishes, select again manually defrosting to enter manual defrosting flow process to manual defrosting and finish, and read memory chip defrosting code, if code is 1, writes 0 and enter memory chip; If code is 0, writes 1 and enter memory chip;
If A judgment result is that be B the determination result is NO, from memory chip, read defrosting code, if defrosting code is 1 and meets that intelligent defrosting condition starts intelligent defrosting until finish; If defrosting code is 0 and judges whether outer disk and whether intact, if having intact outer disk and meet outer disk defrosting condition, start defrosting until finish, if the situation that is 1 according to defrosting code without outer disk is processed.
The defrosting control method of heat pump type air conditioner of the present invention, defrosting the mode of secession is:
Enter after defrosting program, outer blower fan, compressor, auxiliary electrical heater are closed, and indoor fan is closed after having blown waste heat, cross TIME1 after second four-way change-over valve close, TIME2 after second compressor open, start refrigeration, defrosting;
A, judge whether outer disk and whether intact; If so,
B, judgement compression mechanism cool time, if cooling time < is M minute, returns and rejudge; If cooling time >=M minute,
C, judge that whether outer disk temperature continues TIME3 and be greater than T ℃ second again, return and rejudge if not; If so, close compressor, opens outdoor fan, crosses TIME4 four-way change-over valve unlatching after second, and TIME5 is compressor unlatching after second, and defrosting finishes, and recovers to heat;
If the determination result is NO for D A, judge compression mechanism cool time, if cooling time < is M1 minute, returns and rejudge; If cooling time >=M1 minute, close compressor, opens outdoor fan, crosses TIME4 four-way change-over valve unlatching after second, and TIME5 is compressor unlatching after second, and defrosting finishes, and recovers to heat.
The present invention is provided with the manual intervention measure to Defrost mode.For preventing misoperation, only normally in service at heating mode and air-conditioning, just can carry out manual intervention to the Defrost mode of air-conditioning; Misoperation when preventing user's regular job air-conditioning does not arrange special manual intervention button on air-conditioning remote control or air-conditioning guidance panel, by key combination and the mode of operation that is of little use, combines to realize manual intervention function;
The defrosting of intelligent defrosting, outer disk, the artificial three kinds of Defrost modes that defrost are set; And intelligent defrosting mode is set is code 1, outer disk Defrost mode is code 0;
When dispatching from the factory, air-conditioning is defaulted as intelligent defrosting (the 1st kind of common Defrost mode judges whether frosting of outdoor heat exchanger indirectly by inner coil pipe temperature) or outer disk Defrost mode;
Then can, according to actual defrosting effect, select other Defrost mode;
When there is situation not to the utmost of defrosting, switch to manual defrosting mode, after manual defrosting mode defrosting, system automatically switches to the another kind of defrosting mode with respect to defrosting mode before manual defrosting;
Arrange after manual defrosting, automatically switch and separately to plant Defrost mode, since be because defrosting situation has not to the utmost appearred in air-conditioning, illustrate that original defrosting mode may be not suitable with weather now and relevant environmental factor.Can avoid to the full extent manually again intervening;
Be provided with memory chip, with set defrosting mode after guaranteeing power failure, can not change.
Compared with the prior art, beneficial effect of the present invention is embodied in:
1, the present invention utilizes the defrosting of intelligent defrosting, outer disk, manual being combined with of defrosting mode, by manual intervention means, has effectively avoided intelligent defrosting or outer disk defrosting to be difficult to more adapt to the shortcoming of wider region, natural environment and climate condition.Accomplish the applicable regional of a kind of product, under multiple environment, can accomplish accurate defrosting.
2, the present invention is owing to being provided with manual defrosting mode, can solve defrosting that any extreme weather and uncertain factor (running into the situation of power failure as heated in a period of time or defrosting) cause situation not to the utmost, combination and the switching of three kinds of Defrost modes of the present invention, really solved accurately defrosting in various environment, problem not to the utmost of defrosting, has improved the operating efficiency that heats of heat pump type air conditioner.
3, the manual defrosting mode arranging in the present invention, solved and occurred that air-conditioner defrosting not to the utmost in the past, when heating effect is poor, need specialized maintenance personnel and the loaded down with trivial details divided problem of means, domestic consumer can settle a dispute by the parties concerned themselves by shirtsleeve operation, reduce the maintenance of factory and sent work amount, increased benefit.
4, in software of the present invention, be provided with and judge whether outer disk sensor has and intact Rule of judgment, has greatly increased range of application of the present invention.
5, the present invention does not change system architecture and the control circuit of existing fixed speed air conditioner, and the suitable adjustment by software program can realize, easy to implement.
Accompanying drawing explanation:
Fig. 1 is Defrost mode main control flow chart of the present invention.
Fig. 2 be the present invention defrost control in the workflow diagram of manual intervention.
Fig. 3 is the workflow diagram of the manual defrosting mode of the present invention.
Below pass through the specific embodiment, and the invention will be further described by reference to the accompanying drawings.
The specific embodiment:
Referring to Fig. 1, during program initialization, the defrosting code of intelligent defrosting is made as to 1, the defrosting code of outer disk defrosting is made as 0; When air-conditioner dispatches from the factory, default setting Defrost mode is that intelligent defrosting or outer disk defrosting are all passable, and corresponding defrosting code 1 or 0 is sent into memory chip, during air-conditioner work, do you first judge (1) air-conditioner in heating mode and are working? if in heating mode and working, can carry out manual intervention to Defrost mode.If result is no, do not enter program below.For preventing manual intervention maloperation, air-conditioning be set in heating mode and can work as the precondition that whether can carry out manual intervention.In season beyond preventing in the winter time, artificial incorrect operation, enters manual defrosting mode, causes system pressure too high, infringement system.Do you judge that again (2) carry out manual intervention? maintenance personal or domestic consumer all can be according to outer machine frosting situations, the Defrost mode of air-conditioner is carried out to manual intervention, in aforesaid background technology, can find out that intelligent defrosting and outer disk defrosting respectively have pluses and minuses, and have the gentle time environment in the work region oneself being more suitable for.Maintenance personal or domestic consumer be according to the guidance of description, when there is defrosting misoperation in air-conditioning, can manual intervention, and change the defrosting mode that another is more suitable for, to defrosting not to the utmost, the air-conditioning that outer machine heat exchanger has been tied very thick frost manually defrosts.Ran into defrosting situation not to the utmost in the past, and often only had to adopt outdoor heat converter is watered to boiling water, the methods such as cross valve line, forced refrigeration of extracting solve.The operation of these methods is loaded down with trivial details, and has certain professional and dangerous (as the method for extracting cross valve line).And manually defrost by the artificial method of intervening of the present invention, convenient, quick.If now do not carry out manual intervention, from memory chip, read defrosting code now, then judge that (3) defrosting code is 1? 1 expression defrosting mode is now intelligent defrosting pattern if, if 0 expression is outer disk defrosting mode.Do you when the result of judgement (3) is 1, then judge that (4) meet the beginning condition of intelligent defrosting? if met, defrost, until defrosting end, then start to rejudge from (1).If the ungratified words of result of judgement (4), go back to (1) and start to rejudge.If the result of judgement (3) is 0 o'clock, judge again (5) air-conditioner have outer disk sensor and outer disk intact? as intact in outer disk sensor, enter outer disk defrosting mode, do you judge that again (6) meet outer disk defrosting condition? if meet defrosting condition, start defrosting, again go back to afterwards (1) and start to rejudge.If when the result of judgement (5) is no, go back to intelligent defrosting.Start judgement (4).The condition that is provided with judgement (5) is in order to prevent under outer disk defrosting mode, in the situation that does not have outer disk or outer disk to damage, causes and does not defrost or defrost misoperation.Versatility of the present invention is strengthened in the setting of this condition greatly, on the air-conditioning of the outer disk that outer disk is set or does not arrange, all can use this program.If when the result of judgement (6) is no, goes back to (1) and start to rejudge.
If located in judgement (2), select to carry out manual intervention, as shown in Figure 2, does judgement (7) manually defrosting finish? if in manually defrosting, can not carry out manual intervention.If manually defrosting finishes, can carry out manual intervention.It is, in manually defrosting, to defrost in order to prevent that judgement (7) is set, and impact is the effect of defrosting manually.
Misoperation when preventing user's regular job air-conditioning does not arrange special manual intervention button on air-conditioning remote control or air-conditioning guidance panel, by key combination and the mode of operation that is of little use, combines to realize manual intervention function.For example: with remote controller operation, need only under heating mode, in 15 seconds, air-conditioner is received continuously " 30 ℃ of 31 ℃ → design temperatures of design temperature " and so circulated 3 times, and air-conditioner enters the workflow of changing a kind of defrosting mode.Under heating mode, in 15 seconds, air-conditioner is received continuously " 30 ℃ of 31 ℃ → design temperatures of design temperature " and is so circulated 5 times, enters manual defrosting flow process.Enter and change after a kind of defrosting mode workflow, first read the defrosting code in memory chip, do you judge that again (8) code is 1? if result is 1, code 0 is write to memory chip, if result is 0, code 1 is write to memory chip, then go back to judgement (1) (shown in Fig. 1) and restart judgement.
Enter after manual defrosting flow process, as shown in Figure 3, outer blower fan, compressor, auxiliary electrical heater is closed, after blowing waste heat in indoor wind, close, cross TIME1 after second four-way change-over valve close, TIME2 is compressor unlatching after second, start refrigeration, defrosting, do you judge that again (9) have outer disk and intact? if words, do you judge again (10) compressor cooling M minute? if compressor cooling is less than M minute, returning to (10) rejudges, if compressor cooling is M minute completely, do you judge that again (11) outer disk temperature continues TIME3 and is greater than T ℃ second? words if not, returning to (11) rejudges, if words, close compressor, open outdoor fan, cross TIME4 four-way change-over valve unlatching after second, TIME5 is compressor unlatching after second, defrosting finishes, recovery heats.Does judgement (12) compressor cooling reach more than M1 minute if the result of judgement (9) is no? if do not reach M1 minute, continue judgement (12).If reached more than M1 minute, close compressor, opens outdoor fan, crosses TIME4 four-way change-over valve unlatching after second, and TIME5 is compressor unlatching after second, and defrosting finishes, and recovers to heat.After manually defrosting finishes, return to the C place of Fig. 2, continue to carry out, change another Defrost mode.Manually defrosting generally in defrosting not to the utmost, used have thick ice, frost on outdoor heat exchanger of air conditioner in the situation that.Arrange after manual defrosting, automatically switch and separately to plant Defrost mode, since be because defrosting situation has not to the utmost appearred in air-conditioning, illustrate that original defrosting mode may be not suitable with weather now and relevant environmental factor.Can avoid to the full extent manual intervention again.
Claims (1)
1. a defrosting control method for heat pump type air conditioner, it is 1 that intelligent defrosting code is set, outer disk defrosting code is 0, and defrosting code is sent into memory chip; It is characterized in that the defrosting pattern of entering is:
A, judge that air-conditioning is whether in heating mode and working;
B, whether select manual intervention;
If judgment result is that of A, B be, judge again whether manual defrosting finishes, if do not finish, return to B and rejudge; If in manually defrosting, can not carry out manual intervention; If manually defrosting finishes, select again manually defrosting to enter manual defrosting flow process to manual defrosting and finish, and read memory chip defrosting code, if code is 1, writes 0 and enter memory chip; If code is 0, writes 1 and enter memory chip;
If A judgment result is that be B the determination result is NO, from memory chip, read defrosting code, if defrosting code is 1 and meets that intelligent defrosting condition starts intelligent defrosting until finish; If defrosting code is 0 and judges whether outer disk and whether intact, if having intact outer disk and meet outer disk defrosting condition, start defrosting until finish, if the situation that is 1 according to defrosting code without outer disk is processed.
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| CN201010604106.4A CN102538126B (en) | 2010-12-24 | 2010-12-24 | Defrosting control method of heat-pump type air conditioner |
| CN201310354250.0A CN103423838B (en) | 2010-12-24 | 2010-12-24 | A kind of defrosting control method of heat pump type air conditioner |
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| CN201010604106.4A CN102538126B (en) | 2010-12-24 | 2010-12-24 | Defrosting control method of heat-pump type air conditioner |
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| CN201310354250.0A Division CN103423838B (en) | 2010-12-24 | 2010-12-24 | A kind of defrosting control method of heat pump type air conditioner |
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| CN102538126B true CN102538126B (en) | 2014-02-26 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103836857B (en) * | 2012-11-26 | 2018-06-05 | 浙江盾安人工环境股份有限公司 | The Defrost method of air-conditioning |
| WO2015145714A1 (en) * | 2014-03-28 | 2015-10-01 | 日立アプライアンス株式会社 | Air conditioner |
| CN106403179A (en) * | 2016-09-19 | 2017-02-15 | 广东美的制冷设备有限公司 | Control method for preventing air conditioner from blowing air towards people and air conditioner |
| CN106247568A (en) * | 2016-09-19 | 2016-12-21 | 广东美的制冷设备有限公司 | A kind of air-conditioner wind keeps away people's control method and air-conditioner |
| CN107143978A (en) * | 2017-05-17 | 2017-09-08 | 广东美的暖通设备有限公司 | Air-conditioning system and its blower control method and device |
| CN106958929A (en) * | 2017-05-17 | 2017-07-18 | 广东美的暖通设备有限公司 | Air-conditioning system and its blower control method |
| CN112050374B (en) * | 2019-06-07 | 2022-08-19 | 青岛海尔空调器有限总公司 | Control method and control device for defrosting of air conditioner and air conditioner |
| CN110645675B (en) * | 2019-09-23 | 2021-02-02 | 南京天加环境科技有限公司 | Improved defrosting control method for air conditioner |
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| 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 |
| CN101871684A (en) * | 2010-05-31 | 2010-10-27 | 广州松下空调器有限公司 | Defrosting control method of air conditioner |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS60181531A (en) * | 1984-02-29 | 1985-09-17 | Toshiba Corp | Control of defrosting operation of heat pump type air conditioner |
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|---|---|---|---|---|
| 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 |
| CN101871684A (en) * | 2010-05-31 | 2010-10-27 | 广州松下空调器有限公司 | Defrosting control method of air conditioner |
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Address after: 239000 Chengdong Industrial Zone, Anhui City, Chuzhou Province Patentee after: Anhui Yangzi Air Conditioning Co., Ltd Address before: 239000 Chengdong Industrial Zone, Anhui City, Chuzhou Province Patentee before: CHINA YANGZI GROUP CHUZHOU YANGZI AIR CONDITIONER Co.,Ltd. |
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