CN103668913B - The control method of heat pump clothes dryer - Google Patents
The control method of heat pump clothes dryer Download PDFInfo
- Publication number
- CN103668913B CN103668913B CN201210352944.6A CN201210352944A CN103668913B CN 103668913 B CN103668913 B CN 103668913B CN 201210352944 A CN201210352944 A CN 201210352944A CN 103668913 B CN103668913 B CN 103668913B
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- Prior art keywords
- drying
- hum
- air outlet
- pace
- change
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Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F58/00—Domestic laundry dryers
- D06F58/30—Drying processes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/02—Characteristics of laundry or load
- D06F2103/08—Humidity
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F58/00—Domestic laundry dryers
- D06F58/32—Control of operations performed in domestic laundry dryers
- D06F58/34—Control of operations performed in domestic laundry dryers characterised by the purpose or target of the control
- D06F58/36—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry
- D06F58/38—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry of drying, e.g. to achieve the target humidity
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
Abstract
A kind of control method of heat pump clothes dryer, heat pump clothes dryer comprises drying, this drying is provided with air inlet and air outlet, temperature inductor is respectively arranged with at air inlet and air outlet, also be provided with relative humidity inductor at air outlet, it is characterized in that the pace of change k of the leaving air temp T2 according to air outlet
t2, temperature difference △ T between air inlet and air outlet pace of change k
Δ Twith the pace of change k of the relative humidity HUM of air outlet
hUM, judge whether the operation of this drying meets the condition of systemic presupposition, works as k
t2≤ k
t2', k
hUM≤ k
hUM' and k
△ T≤ k
Δ T' in any two set up time, drying is out of service, drying EP (end of program).The impact and causing that the present invention can not be subject to testing sensor drift judges inaccurate, have simple and reasonable, control accurately and the feature of reliable operation.
Description
Technical field
The present invention relates to a kind of dryer, particularly a kind of control method of heat pump clothes dryer.
Background technology
The appearance of dryer, brings great convenience to people's life, makes people also can obtain dry and comfortable clothing on rainy day.
Heat pump clothes dryer has that efficiency is high, the moisture that can effectively catch in air, the advantage less on surrounding enviroment impact.The accurate control method of heat pump clothes dryer becomes the emphasis of each dryer manufacturer research, the control method of existing dryer mainly contains following three kinds: 1) be directly test with clothes humidity sensor the method that clothing moisture content carries out judging, clothes humidity sensor is divided into resistance-type and condenser type, the corresponding different resistance of different humidity or capacitance, this kind of control method needs lot of experiments to verify, make it corresponding, but, clothes humidity sensor has individual feature, be exactly along with service time increases, resistance or capacitance can be drifted about, test value and actual value is so just caused to there is deviation, 2) be judge with the EAT and leaving air temp that pass in and out drying, after EAT and the leaving air temp temperature difference are less than certain setting value, then time delay a period of time, clothes drying process terminates, 3) being by testing EAT, the air intake relative humidity of drying, and return air temperature, return air relative humidity, calculating air intake and return air absolute moisture content, with entering, the absolute moisture content of return air judges drying termination condition.
As Chinese patent literature publication number CN201598494U discloses a kind of Intelligent clothes drying process fuzzy control device based on weight method on October 6th, 2010, this Intelligent fuzzy control device, by continuous test load weight, judges load degree of drying by fuzzy algorithmic approach.The scope of application of this Intelligent fuzzy control device is narrower, and when drying works, drying is that continuous rotation state or dwell time are very of short duration, and this adds very large difficulty to measurement weight, and measurement result also exists certain error.
And for example Chinese patent literature publication number CN102051796A disclosed the control method of a kind of heat pump clothes dryer and heat pump clothes dryer on May 11st, 2011, this control method comprises the following steps, one dry cavity is provided, the gas controlling to be left by dry cavity is discharged outside heat pump clothes dryer, judges whether the action of dry cavity meets a predetermined condition.The running of some dry cavitys conforms to a predetermined condition, then the gas backstreaming controlling to be left by dry cavity is to dry cavity.This control method is by measuring the humidity of clothing and air intake absolute moisture content, air-out absolute moisture content and EAT, return air temperature, air intake with between return air temperature etc., this control method also exists the measured deviation problem because service time causes for a long time equally, and then affects the service behaviour of dryer.
Summary of the invention
Object of the present invention aim to provide a kind of simple and reasonable, control accurately, the control method of the heat pump clothes dryer of reliable operation, to overcome weak point of the prior art.
The control method of a kind of heat pump clothes dryer designed by this object, heat pump clothes dryer comprises drying, this drying is provided with air inlet and air outlet, temperature inductor is respectively arranged with at air inlet and air outlet, also be provided with relative humidity inductor at air outlet, it is characterized in that the pace of change k of the leaving air temp T2 according to air outlet
t2, temperature difference △ T between air inlet and air outlet pace of change k
Δ Twith the pace of change k of the relative humidity HUM of air outlet
hUM, judge whether the operation of this drying meets the condition of systemic presupposition,
Work as k
t2≤ k
t2', k
hUM≤ k
hUM' and k
△ T≤ k
Δ T' in any two set up time, drying is out of service, drying EP (end of program);
Wherein, the condition of systemic presupposition comprises the pace of change k of the leaving air temp of the air outlet of systemic presupposition
t2', the pace of change k of the relative humidity of the air outlet of systemic presupposition
hUM' and the pace of change k of temperature difference between the air inlet of systemic presupposition and air outlet
Δ T',
K
t2' span be 0.08 ~ 0.25 DEG C/min;
K
hUM' be (-1.2 ± 0.8) %/minute;
K
Δ T' span be-0.3 ~-0.1 DEG C/min.
The control method of heat pump clothes dryer comprises the following steps:
Step one, provides drying, does not carry out the judgement whether drying terminates within the initialization time of dryer;
The initialization time of described dryer refers to that the preset operating time N of dryer, N=m*P, m are time coefficient, m=10 minute/kg; P is the load of dryer, and unit is kg;
Step 2, after dryer exceedes initialization time N running time, measures the EAT T1 of air inlet of drying and the leaving air temp T2 of the air outlet of drying, and the relative humidity HUM of air outlet;
Step 3, calculates the temperature difference △ T between EAT T1 and leaving air temp T2, wherein △ T=T1-T2;
Step 4, in the fixed time T2 after the initialization time of dryer terminates, calculates the pace of change k of the leaving air temp T2 of the air outlet of drying
t2, calculate the pace of change k of the temperature difference △ T between EAT T1 and leaving air temp T2
Δ T, calculate the relative humidity variations speed k in air port
hUM;
Wherein, the span of fixed time T2 is 1 ~ 5 minute;
Step 5, works as k
t2≤ k
t2', k
hUM≤ k
hUM' and k
△ T≤ k
Δ T' in any two set up time, drying EP (end of program).
Described control method is further comprising the steps of:
Step 6, records and stores last three suitable data and average: the pace of change k of leaving air temp T2
t2, air outlet relative humidity variations speed k
hUMwith the pace of change k of the temperature difference △ T of EAT T1 and leaving air temp T2
Δ T, using the condition of these data as systemic presupposition during heat pump clothes dryer execution next time drying program.
After the present invention adopts above-mentioned technical scheme, the impact and causing that can not be subject to testing sensor drift judges inaccurate, have simple and reasonable, control accurately and the feature of reliable operation.
Accompanying drawing explanation
Fig. 1 is the control flow chart of first embodiment of the invention.
Fig. 2 is the bright inlet and outlet temperature of this reality and the temperature difference, air outlet humidity and the curve relation figure of time.
Fig. 3 is the control flow chart of second embodiment of the invention.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described.
See Fig. 1, a kind of control method of heat pump clothes dryer, heat pump clothes dryer comprises drying, this drying is provided with air inlet and air outlet, temperature inductor is respectively arranged with at air inlet and air outlet, also be provided with relative humidity inductor at air outlet, it is characterized in that the pace of change k of the leaving air temp T2 according to air outlet
t2, temperature difference △ T between air inlet and air outlet pace of change k
Δ Twith the pace of change k of the relative humidity HUM of air outlet
hUM, judge whether the operation of this drying meets the condition of systemic presupposition,
Work as k
t2≤ k
t2', k
hUM≤ k
hUM' and k
△ T≤ k
Δ T' in any two set up time, drying is out of service, drying EP (end of program);
Wherein, the condition of systemic presupposition comprises the pace of change k of the leaving air temp of the air outlet of systemic presupposition
t2', the pace of change k of the relative humidity of the air outlet of systemic presupposition
hUM' and the pace of change k of temperature difference between the air inlet of systemic presupposition and air outlet
△ T',
K
t2' span be 0.08 ~ 0.25 DEG C/min;
K
hUM' be (-1.2 ± 0.8) %/minute;
K
Δ T' span be-0.3 ~-0.1 DEG C/min.
The control method of heat pump clothes dryer comprises the following steps:
Step one, provides drying, does not carry out the judgement whether drying terminates within the initialization time of dryer;
The initialization time of described dryer refers to that the preset operating time N of dryer, N=m*P, m are time coefficient, m=10 minute/kg; P is the load of dryer, and unit is kg;
Load as dryer is 6kg, then the initialization time of dryer is 60 minutes, and the load as dryer is 5kg, then the initialization time of dryer is 50 minutes.
Step 2, after dryer exceedes initialization time N running time, measures the EAT T1 of air inlet of drying and the leaving air temp T2 of the air outlet of drying, and the relative humidity HUM of air outlet;
Step 3, calculates the temperature difference △ T between EAT T1 and leaving air temp T2, wherein △ T=T1-T2;
Step 4, in the fixed time T2 after the initialization time of dryer terminates, calculates the pace of change k of the leaving air temp T2 of the air outlet of drying
t2, calculate the pace of change k of the temperature difference △ T between EAT T1 and leaving air temp T2
Δ T, calculate the relative humidity variations speed k in air port
hUM;
Wherein, the span of fixed time T2 is 1 ~ 5 minute;
Step 5, works as k
t2≤ k
t2', k
hUM≤ k
hUM' and k
△ T≤ k
Δ T' in any two set up time, drying EP (end of program).
See Fig. 2, for the temperature difference △ T graph of relation in time of EAT T1, the leaving air temp T2 of air outlet of air inlet, the humidity of air outlet and EAT T1 and leaving air temp T2, show from Fig. 2, along with the work of heat pump clothes dryer is longer for running time, the EAT T1 of air inlet, the leaving air temp T2 of air outlet rise gradually, are finally tending towards a stationary value; Humidity declined along with the work running time of heat pump clothes dryer, was finally tending towards a stationary value.The temperature difference △ T of EAT T1 and leaving air temp T2 fluctuates along with the work of heat pump clothes dryer running time to some extent, finally trends towards zero.
The control method of heat pump clothes dryer provided by the invention, can not be subject to the drift of testing sensor and cause judging to have inaccurate impact reliable operation, control accurate advantage.
Second embodiment.
See Fig. 3, the difference of the present embodiment and the first embodiment is, in a first embodiment, works as k
t2, k
Δ T, k
hUMafter the two pace of change any in three reaches the condition of systemic presupposition, namely think drying EP (end of program).But control method in the present embodiment records and stores last three suitable data and average: the pace of change k of leaving air temp T2
t2, air outlet relative humidity variations speed k
hUMwith the pace of change k of the temperature difference △ T of EAT T1 and leaving air temp T2
Δ T, using these data as the condition of systemic presupposition during task under heat pump clothes dryer, that is, compare by the data of data up-to-date in the fixed time and historical record, then judge whether clothes drying process terminates.
Data each time in last three suitable data all should meet: work as k
t2≤ k
t2', k
hUM≤ k
hUM' and k
△ T≤ k
Δ T' in any two set up time, drying is out of service, drying EP (end of program).
All the other do not state part with the first embodiment, repeat no more.
Claims (3)
1. the control method of a heat pump clothes dryer, heat pump clothes dryer comprises drying, this drying is provided with air inlet and air outlet, temperature inductor is respectively arranged with at air inlet and air outlet, also be provided with relative humidity inductor at air outlet, it is characterized in that the pace of change k of the leaving air temp T2 according to air outlet
t2, temperature difference △ T between air inlet and air outlet pace of change k
Δ Twith the pace of change k of the relative humidity HUM of air outlet
hUM, judge whether the operation of this drying meets the condition of systemic presupposition,
Work as k
t2≤ k
t2', k
hUM≤ k
hUM' and k
△ T≤ k
Δ T' in any two set up time, drying is out of service, drying EP (end of program);
Wherein, the condition of systemic presupposition comprises the pace of change k of the leaving air temp of the air outlet of systemic presupposition
t2', the pace of change k of the relative humidity of the air outlet of systemic presupposition
hUM' and the pace of change k of temperature difference between the air inlet of systemic presupposition and air outlet
Δ T',
K
t2' span be 0.08 ~ 0.25/ minute;
K
hUM' be (-1.2 ± 0.8) %/minute;
K
Δ T' span be-0.3 ~-0.1 DEG C/min.
2. the control method of heat pump clothes dryer according to claim 1, is characterized in that control method comprises the following steps:
Step one, provides drying, does not carry out the judgement whether drying terminates within the initialization time of dryer;
The initialization time of described dryer refers to that the preset operating time N of dryer, N=m*P, m are time coefficient, m=10 minute/kg; P is the load of dryer, and unit is kg;
Step 2, after dryer exceedes initialization time N running time, measures the EAT T1 of air inlet of drying and the leaving air temp T2 of the air outlet of drying, and the relative humidity HUM of air outlet;
Step 3, calculates the temperature difference △ T between EAT T1 and leaving air temp T2, wherein △ T=T1-T2;
Step 4, in the fixed time T2 after the initialization time of dryer terminates, calculates the pace of change k of the leaving air temp T2 of the air outlet of drying
t2, calculate the pace of change k of the temperature difference △ T between EAT T1 and leaving air temp T2
Δ T, calculate the relative humidity variations speed k in air port
hUM;
Wherein, the span of fixed time T2 is 1 ~ 5 minute;
Step 5, works as k
t2≤ k
t2', k
hUM≤ k
hUM' and k
△ T≤ k
Δ T' in any two set up time, drying EP (end of program).
3. the control method of heat pump clothes dryer according to claim 2, is characterized in that described control method is further comprising the steps of: step 6, records and store last three times to meet k
t2≤ k
t2', k
hUM≤ k
hUM' and k
△ T≤ k
Δ T' in any two relational expressions data and on average obtain: the pace of change k of leaving air temp T2
t2mean value, air outlet relative humidity variations speed k
hUMmean value and the pace of change k of temperature difference △ T of EAT T1 and leaving air temp T2
Δ Tmean value, using three mean values as heat pump clothes dryer next time perform drying program time systemic presupposition condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210352944.6A CN103668913B (en) | 2012-09-20 | 2012-09-20 | The control method of heat pump clothes dryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210352944.6A CN103668913B (en) | 2012-09-20 | 2012-09-20 | The control method of heat pump clothes dryer |
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| Publication Number | Publication Date |
|---|---|
| CN103668913A CN103668913A (en) | 2014-03-26 |
| CN103668913B true CN103668913B (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210352944.6A Expired - Fee Related CN103668913B (en) | 2012-09-20 | 2012-09-20 | The control method of heat pump clothes dryer |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104711836B (en) * | 2015-04-08 | 2017-01-18 | 珠海格力电器股份有限公司 | Shutdown control method and system for drying machine |
| CN106854827B (en) * | 2016-08-29 | 2020-11-03 | 青岛海尔滚筒洗衣机有限公司 | Clothes dryer trunk judging method |
| CN109402988B (en) * | 2017-08-16 | 2022-02-22 | 青岛海尔洗涤电器有限公司 | Drying system control method and clothes treatment device |
| CN108679999B (en) * | 2018-03-16 | 2020-06-02 | 珠海格力电器股份有限公司 | Control method and device of drying machine and drying machine |
| CN112011979B (en) * | 2020-08-24 | 2022-07-19 | 中山东菱威力电器有限公司 | Drying control method of clothes dryer and clothes dryer |
| CN114016256A (en) * | 2021-11-24 | 2022-02-08 | 珠海格力电器股份有限公司 | Washing machine control method and device and washing machine |
| CN114182509B (en) * | 2021-11-30 | 2022-12-27 | 珠海格力电器股份有限公司 | Clothes drying judging method and device for clothes treatment equipment and clothes treatment equipment |
| CN114182508B (en) * | 2021-11-30 | 2023-01-17 | 珠海格力电器股份有限公司 | Clothes drying judging method and device for clothes treatment equipment and clothes treatment equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0038516A1 (en) * | 1980-04-17 | 1981-10-28 | Kabushiki Kaisha Toshiba | Color picture tube provided with an inner magnetic shield |
| KR20050111135A (en) * | 2004-05-21 | 2005-11-24 | 엘지전자 주식회사 | Automatic drying method for washer |
| US20060162182A1 (en) * | 2005-01-24 | 2006-07-27 | King-Leung Wong | Power-saving drying machine control |
| CN1814901A (en) * | 2005-02-02 | 2006-08-09 | 黄景良 | Energy-saving automatic cut-off method for electric-heating dryer |
| CN102051796A (en) * | 2009-11-03 | 2011-05-11 | 财团法人工业技术研究院 | Heat pump clothes dryer and control method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000005493A (en) * | 1998-06-19 | 2000-01-11 | Hitachi Ltd | Drying operation control device for clothes dryer |
-
2012
- 2012-09-20 CN CN201210352944.6A patent/CN103668913B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0038516A1 (en) * | 1980-04-17 | 1981-10-28 | Kabushiki Kaisha Toshiba | Color picture tube provided with an inner magnetic shield |
| KR20050111135A (en) * | 2004-05-21 | 2005-11-24 | 엘지전자 주식회사 | Automatic drying method for washer |
| US20060162182A1 (en) * | 2005-01-24 | 2006-07-27 | King-Leung Wong | Power-saving drying machine control |
| CN1814901A (en) * | 2005-02-02 | 2006-08-09 | 黄景良 | Energy-saving automatic cut-off method for electric-heating dryer |
| CN102051796A (en) * | 2009-11-03 | 2011-05-11 | 财团法人工业技术研究院 | Heat pump clothes dryer and control method thereof |
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| CN103668913A (en) | 2014-03-26 |
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Inventor after: Feng Liwei Inventor after: Yu Jijiang Inventor after: Guo Hong Inventor before: Feng Liwei |
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Granted publication date: 20151118 Termination date: 20190920 |