EP3305976A1 - Automatisches trocknungsbeurteilungsverfahren für einen wäschetrockner und wäschetrockner - Google Patents

Automatisches trocknungsbeurteilungsverfahren für einen wäschetrockner und wäschetrockner Download PDF

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Publication number
EP3305976A1
EP3305976A1 EP16799154.6A EP16799154A EP3305976A1 EP 3305976 A1 EP3305976 A1 EP 3305976A1 EP 16799154 A EP16799154 A EP 16799154A EP 3305976 A1 EP3305976 A1 EP 3305976A1
Authority
EP
European Patent Office
Prior art keywords
temperature
clothes dryer
time
drying
drum
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.)
Withdrawn
Application number
EP16799154.6A
Other languages
English (en)
French (fr)
Other versions
EP3305976A4 (de
Inventor
Longping YAO
Dongdong ZHU
Yanqi SHI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Haier Washing Machine Co Ltd
Original Assignee
Qingdao Haier Washing Machine Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Qingdao Haier Washing Machine Co Ltd filed Critical Qingdao Haier Washing Machine Co Ltd
Publication of EP3305976A1 publication Critical patent/EP3305976A1/de
Publication of EP3305976A4 publication Critical patent/EP3305976A4/de
Withdrawn legal-status Critical Current

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    • 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
    • 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
    • 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
    • D06F2103/12—Temperature
    • 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
    • D06F2103/28—Air properties
    • D06F2103/32—Temperature
    • 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
    • D06F2103/38—Time, e.g. duration

Definitions

  • the present disclosure relates to the field of clothes drying, and in particular to an automatic drying judgment method for a clothes dryer and a clothes dryer.
  • a NTC (thermistor) is commonly installed at an air outlet of a drum of clothes dryers, and it is an important branch of automatic drying control of the existing clothes dryer to perform automatic drying judgment by utilizing an NTC.
  • the NTC possesses as the curve characteristics shown in Fig. 1 , stage 1 is a stage in which heating begins, and discharge temperature rises dramatically; stage 2 is a stage of stable drying, and the discharge temperature is stable; and stage 3 is a stage in which drying will be finished, and the discharge temperature rises dramatically.
  • the temperature value in stage 2 is taken as the stable temperature value T 2
  • the temperature value in stage 3 is T 3
  • the method has the following shortcomings: the quantity of clothes have a great influence on the drying effect, when the clothes are more and a full load is approached, the drying effect is better, while when the clothes are fewer, the drying effect is poor and the clothes often cannot be completely dried.
  • Clothes with different quantities can also be subjected to drying test to obtain several ranges corresponding to different clothes quantities, a corresponding range is selected based on the quantity of the dried clothes to determine the drying state. However, only a range is taken, and only discrete points can be detected and not all the loads can be included.
  • the objective of the present disclosure is to overcome the shortcomings of the prior art and provide an automatic drying judgment method for a clothes dryer.
  • an automatic drying judgment method for a clothes dryer is provided.
  • the clothes dryer is set up with the corresponding relationship between time t and temperature T 1 of all the loads in a drying state.
  • the clothes dryer detects the temperature T 2 in the drum in real time, and compares with the set temperature T 1 corresponding to the time; and when the temperature T 2 detected in real time is greater than or equal to the set temperature T 1 corresponding to the time, the clothes in the drum are judged to be dried.
  • the corresponding relationship of the time t and temperature T 1 of all the loads in a drying state is a quadratic function relationship.
  • the quadratic function is a quadratic function with its graphic concave up, and the corresponding relationship curve of the time t and temperature T 1 of all the loads in a drying state is the left part of the vertex of the quadratic function.
  • the clothes dryer obtains the curve formula of the quadratic function, stores the curve formula in a main control board of the clothes dryer, and directly calls the curve formula in the drying process.
  • the time t and temperature T 1 are got for multiple loads in the drum during the drying process through experiments by the clothes dryer, and connects the multiple groups of time t and temperature T 1 in the drum into a smooth curve, wherein the smooth curve is a quadratic function curve, and the formula of the quadratic function curve is determined.
  • the time t and temperature T 1 are get for at least three loads in the drum during drying process through experiments, and determines the formula of the quadratic function curve based on the three groups of time t and the temperature T 1 in the drum.
  • a temperature sensor is arranged at an air outlet of a drum of the clothes dryer and is used for detecting the temperature in the drum in real time.
  • T 1 at 2 +bt+c, wherein a, b and c are constants, and the constant is related to the maximum load, heating power, wind speed and temperature control system of the clothes dryer.
  • the present disclosure further provides a clothes dryer having the above method.
  • the present disclosure provides an automatic drying judgment method for a clothes dryer, wherein the clothes dryer is internally provided with the corresponding relationship between time t and temperature T 1 of all the loads in a drying state.
  • the clothes dryer detects the temperature T 2 in the drum in real time, and compares with the set temperature T 1 corresponding to the time; and when the temperature T 2 detected in real time is greater than or equal to the set temperature T 1 corresponding to the time, the clothes in the drum are judged to be dried.
  • the accurate drying state of all the loads can be judged, thereby ensuring the drying effect of the clothes dryer at any load.
  • the constants a, b and c are corresponding to the maximum load or capacity, heating power, wind speed and temperature control system of the clothes dryer. That is, each model corresponds to a group of a, b and c, and each model is provided with a corresponding relationship of a quadratic function.
  • a temperature curve of the drying process is obtained as shown in Fig. 2 .
  • the temperature values of clothes of different weights during drying process are marked in the above figure and connected together to form a curve, and the curve is a quadratic function.
  • the quadratic function further covers the corresponding relationship of the time and temperature of the clothes of undetected weights during drying process. Therefore, the quadratic function contains the corresponding relationship of the time and temperature of all the loads in a drying state.
  • the clothes in the drum can be judged to be dried.
  • This judgment method realizes quantitative judgment of continuous loads, and can judge the accurate drying state of all the loads, thereby ensuring the drying effect of any load of the clothes dryer.
  • the clothes dryer obtains the curve formula of the quadratic function through experimental tests, stores the curve formula in a main control board of the clothes dryer, and directly calls the curve formula in the drying process.
  • the temperature in the drum is greater than or equal to the temperature on the quadratic function curve corresponding to the time, the clothes in the drum are judged to be dried.
  • the time t and temperature T 1 in the drum of at least three loads in the drying process are got through experiments, and the quadratic function curve formula is determined based on the three groups of time t and temperature T 1 in the drum.
  • the temperature in the drum is greater than or equal to the temperature on the quadratic function curve corresponding to the time, the clothes in the drum are judged to be dried.
  • the clothes dryer tests the time t and temperature T 1 in the drum of multiple loads during drying process through experiments, and connects the multiple groups of time t and temperature T 1 in the drum into a smooth curve, wherein the smooth curve is a quadratic function curve.
  • the quadratic function curve contains the corresponding relationship of the time and temperature of all the loads in a drying state, as long as the temperature curve of the clothes drying process is intersected with the quadratic function, the clothes are dried, that is to say, when the temperature in the drum is greater than or equal to the temperature on the quadratic function curve corresponding to the time, the clothes in the drum can be judged to be dried.
  • the quadratic function curve formula is determined and stored in a main control board of the clothes drier, and is directly taken in the drying process. When the temperature in the drum is greater than or equal to the temperature on the quadratic function curve corresponding to the time, the clothes in the drum are judged to be dried.
  • a temperature sensor is arranged at an air outlet of a drum of the clothes dryer and is used for detecting the temperature in the drum in real time.
  • the air outlet of the drum of the clothes dryer is provided with an NTC (a thermistor).
  • the quadratic function appears at different positions of the coordinate system along with the different ambient temperatures, and after tests, the value of c is in a linear relationship with 0.9 time of T 3 .
  • the amended quadratic function is more accurate, and accurate drying finishing point of clothes of different weights can be more accurately obtained.
  • the present disclosure provides a clothes dryer using the above judgment method.
  • a temperature sensor is arranged at an air outlet of a drum of the clothes dryer and is used for detecting the temperature in the drum in real time.
  • the curve formula is stored in a main control board of a clothes dryer. In the drying process, the clothes dryer detects the temperature T 2 in the drum in real time, directly calls the curve formula, and compares with the set temperature T 1 corresponding to the time.
  • the clothes in the drum are judged to be dried.
  • the time t and temperature T 1 in the drum of at least three loads in the drying process are tested through experiments, and the quadratic function curve formula is determined based on the three groups of time t and temperature T 1 in the drum.
  • the present disclosure describes a direct discharging clothes dryer with a drying capacity of 6kg, the rated voltage is 220V/50Hz, the heating power is 1800W, the discharge temperature is controlled to be not greater than 60°C, the air inlet temperature is not greater than 120°C, and the designed maximum air volume is 150m 3 /h.
  • the formula is preset in the main control board of the clothes dryer, then accurate drying finishing points of clothes of different weights can be achieved.
  • the constants a, b and c in the formula are tested under an ambient temperature of 20°C.
  • the value of c is calculated due to the following reason: the quadratic function appears at different positions of the coordinate system along with the difference of the ambient temperature, and after tests, the value of c is in a linear relationship with 0.9 time of T 3 .
  • the amended quadratic function is more accurate, and accurate drying finishing point of clothes of different weights can be more accurately obtained.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
EP16799154.6A 2015-05-27 2016-04-15 Automatisches trocknungsbeurteilungsverfahren für einen wäschetrockner und wäschetrockner Withdrawn EP3305976A4 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510278898.3A CN106283573B (zh) 2015-05-27 2015-05-27 一种干衣机自动烘干判断方法及干衣机
PCT/CN2016/079410 WO2016188265A1 (zh) 2015-05-27 2016-04-15 一种干衣机自动烘干判断方法及干衣机

Publications (2)

Publication Number Publication Date
EP3305976A1 true EP3305976A1 (de) 2018-04-11
EP3305976A4 EP3305976A4 (de) 2018-06-27

Family

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Application Number Title Priority Date Filing Date
EP16799154.6A Withdrawn EP3305976A4 (de) 2015-05-27 2016-04-15 Automatisches trocknungsbeurteilungsverfahren für einen wäschetrockner und wäschetrockner

Country Status (4)

Country Link
EP (1) EP3305976A4 (de)
KR (1) KR20180011813A (de)
CN (1) CN106283573B (de)
WO (1) WO2016188265A1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108193462A (zh) * 2016-12-08 2018-06-22 青岛海尔洗衣机有限公司 干衣设备自动烘干判断方法
CN108396530B (zh) * 2017-02-08 2021-06-29 重庆海尔洗衣机有限公司 一种干衣机烘干判断方法及干衣机
CN110359224B (zh) * 2018-04-11 2022-11-04 重庆海尔洗涤电器有限公司 用于衣物处理设备的控制方法和衣物处理设备
CN110359226B (zh) * 2018-04-11 2021-12-03 佛山海尔滚筒洗衣机有限公司 用于衣物处理设备的控制方法和衣物处理设备
CN112095309B (zh) * 2019-05-31 2024-06-25 上海海尔洗涤电器有限公司 一种干衣机烘干方法、装置、干衣机及存储介质
CN114836961A (zh) * 2021-02-01 2022-08-02 博西华电器（江苏）有限公司 提供干衣设备剩余烘干时间的方法、设备和存储介质
CN115613333A (zh) * 2021-07-16 2023-01-17 青岛海尔洗涤电器有限公司 用于干衣设备的烘干控制方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1572811A (en) * 1976-03-30 1980-08-06 Hoover Ltd Fan blown hot air tumble driers
JPS60119995A (ja) * 1983-12-01 1985-06-27 松下電器産業株式会社 衣類乾燥機
KR101127988B1 (ko) * 2005-12-21 2012-03-29 주식회사 대우일렉트로닉스 드럼세탁기 및 드럼세탁기의 건조 완료 검출 방법
KR100692582B1 (ko) * 2006-03-24 2007-03-14 주식회사 대우일렉트로닉스 드럼 세탁기 및 드럼 세탁기 건조방법
KR100866884B1 (ko) * 2007-06-15 2008-11-04 엘지전자 주식회사 건조기의 포량 결정 제어방법 및 그 건조기
KR102057859B1 (ko) * 2013-01-25 2019-12-20 엘지전자 주식회사 의류처리장치

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Publication number Publication date
KR20180011813A (ko) 2018-02-02
WO2016188265A1 (zh) 2016-12-01
CN106283573A (zh) 2017-01-04
CN106283573B (zh) 2019-04-02
EP3305976A4 (de) 2018-06-27

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