EP2039825B1 - Trocknungsgerät - Google Patents

Trocknungsgerät Download PDF

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Publication number
EP2039825B1
EP2039825B1 EP08105369A EP08105369A EP2039825B1 EP 2039825 B1 EP2039825 B1 EP 2039825B1 EP 08105369 A EP08105369 A EP 08105369A EP 08105369 A EP08105369 A EP 08105369A EP 2039825 B1 EP2039825 B1 EP 2039825B1
Authority
EP
European Patent Office
Prior art keywords
air
filter
laundry drying
disposed
drying device
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.)
Not-in-force
Application number
EP08105369A
Other languages
English (en)
French (fr)
Other versions
EP2039825A1 (de
Inventor
Xudong Ding
Wei Zhang
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
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 BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP2039825A1 publication Critical patent/EP2039825A1/de
Application granted granted Critical
Publication of EP2039825B1 publication Critical patent/EP2039825B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • D06F58/20—General details of domestic laundry dryers 
    • D06F58/22—Lint collecting arrangements
    • 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
    • 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
    • D06F2103/36—Flow or velocity
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/58—Indications or alarms to the control system or to the user
    • 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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • 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
    • D06F58/50—Responding to irregular working conditions, e.g. malfunctioning of blowers

Definitions

  • the present invention relates to a drying device for drying laundries, in particular to a laundry drying device by using air to condense.
  • the drum-type washing and drying machine as an example below, it comprises a cabinet body, inside which are disposed a water tub and a rotatable drum disposed inside the water tub; a heating device for heating air and a drying channel for leading the heated air into the water tub and the interior of the drum is disposed above the water tub; a condensing pipeline and condensing device are disposed at one side of the water tub; an inlet of the condensing pipeline is connected with an air discharge opening of the water tub; and a fan is connected between the drying channel and the condensing pipeline. The fan rotates at high speed under the effects of a fan motor, thereby promoting the circulation of air.
  • a laundry entry opening for the user to access the laundry is disposed at a substantially central position of a front side, i.e. the side facing the user, and the laundry entry opening is closed or opened by a glass door.
  • a control panel for a user to operate and a detergent distributing box for releasing the detergent or softener are disposed above the glass door on the cabinet body; option buttons or knobs, a power switch, and an information display screen are disposed on the control panel, and the user can input a command by the buttons or knobs to select different program options, and then the system controls a washing or drying program according to the different options selected by the user, and at the same time the related information of the system is displayed on the information display screen.
  • a corresponding drying program is started to dry the laundry.
  • the system will start the heating device to heat air, so as to make it into dry hot air, which is transferred to the water tub and the interior of the drum via the drying channel; the drum rotates at high speed under the drive of the motor and drives the laundry to tumble up and down, thereby contact fully with the dry hot air, and the dry hot air carries the moisture contained in the wet laundry and becomes relatively humid air, which is discharged into the condensing pipeline via the air discharging opening, and then the moisture in the air is condensed by the condensing device, and the air is retransferred under the effect of the fan into the drying channel to be heated there, and enter the next circulation process thereby. With the continuous cycles, the moisture in the laundry is gradually evaporated, until being dried fully.
  • an air inlet is disposed at one side of the cabinet body, and an air outlet is disposed at the other side, a ventilation pipe is connected between the air inlet and the air outlet, thus, the ambient air with a relatively low temperature is transferred to the ventilating pipe via the air inlet;
  • a condensing pipeline is disposed in a suitable place on the ventilating pipe, and a heat exchange occurs in the condensing pipeline between the relatively low temperature air and the relatively humid hot air discharged from the water tub, and the moisture therein is condensed, thereby realize the condensing effect by the air.
  • an object of the present invention is to provide a laundry drying device which can promptly inform a user to clean the filter.
  • the laundry drying device is realized as follows: a laundry drying device, comprising an air inlet and air outlet in communication with the ambient air, wherein between the air inlet and the air outlet, a filter device, an air-blasting device for driving air to flow, and a condensing device using air as a condensing medium are disposed, which are in communication with one another by way of an air flow pipeline; a detecting device for detecting the degree of blockage of the filter device, a comparison device for comparing a signal value detected by the detecting device with a preset reference value, and a signal indicating device for displaying the degree of blockage of the filter device according to the comparison result of the comparison device; and the detecting device is disposed between the filter device and the air-blasting device.
  • the comparison device compares the detected signal value with the preset reference value of the system; when it is greater than the reference value, signal for indicating that the filter device need to be cleaned is displayed to warn the user by the signal indicating device, so as to promptly inform the user to clean the filter device, thus to effectively avoid the problem of reduced condensing effect caused by the blockage of the filter device.
  • the detecting device is a self-heating thermistor
  • the preset reference value is a temperature value
  • the detecting device is an impeller-type electric induction flow sensor
  • the preset reference value is a voltage value
  • the detecting device is an impeller-type pulse output flow sensor
  • the preset reference value is a pulse frequency value
  • the air inlet is disposed at the front side of the laundry drying device, and the air outlet is disposed at the rear side of the laundry drying device.
  • the signal indicating device is disposed on a control panel of the laundry drying device, so as to make the signal easy to be observed.
  • Fig. 1 shows a perspective view of a laundry drying device according to an embodiment of the present invention, and as shown in the figure, the laundry drying device 1 comprises a cabinet body 12, a front wall 14 fitted with a glass door 13, a door handle 15 by operating which a user opens and closes the glass door 13, a control panel 11 and a detergent distributing box 16 disposed above the glass door 13, a power switch 17, a program selecting knob 18 and a signal display 10 disposed on the control panel 11, and a top cover 19 disposed on the top of the cabinet body 12 and control panel 11.
  • Fig. 1 shows a perspective view of a laundry drying device according to an embodiment of the present invention, and as shown in the figure, the laundry drying device 1 comprises a cabinet body 12, a front wall 14 fitted with a glass door 13, a door handle 15 by operating which a user opens and closes the glass door 13, a control panel 11 and a detergent distributing box 16 disposed above the glass door 13, a power switch 17, a program selecting knob 18 and a signal display 10 disposed on the control
  • a laundry entry opening 22 for loading or unloading the laundry is disposed at one front side of the water tub 20 and the drum 21 in the direction facing the user, and the laundry entry opening 22 is opened and closed by the glass door 13 disposed on the front wall 14.
  • a heating device 23 for heating air into the dry hot air and a drying channel 24 for transferring the heated dry hot air to the water tub 20 and the interior of the drum are disposed; and on one side of the water tub 20, a condensing device 6 and a condensing channel 25 with one end of which being connected to an air discharge opening 26 of the water tub 20 and the other end being connected to the drying channel 24 via a fan 27 are disposed.
  • the fan 27 rotates under the drive of a fan motor 28 so as to promote an air flow.
  • air inside the drying channel 24 is heated by the heating device 23 into the dry hot air, which is then guided to the water tub 20 and the interior of the drum 21 by the drying channel 24, and contacts fully with the wet laundry and carries the moisture contained in the laundry thereby becomes relatively humid hot air.
  • the relatively humid hot air is then discharged into the condensing channel 25 via the air discharge opening 26.
  • the moisture contained in the air is condensed into water.
  • the air then flows into the drying channel 24 under the effect of the fan 27, and is heated again and enters the next cycle. After a number of cycles, the moisture in the laundry is gradually evaporated.
  • the embodiment according to the present invention uses air to condense, therefore on one side of the cabinet body 12, preferably, an air inlet 2 is disposed at a suitable position below the glass door 13 on the front wall 14, such that the ambient air at a relatively low temperature enters the interior of the cabinet body via the air inlet 2.
  • an air outlet 3 is disposed at the rear of the cabinet body 12, and after heat exchange, the ambient air is discharged from the cabinet body via the air outlet 2.
  • a filter 4 is disposed adjacent the front wall 14 in front of the air inlet 2, and the air flow direction is guided by an air flow pipeline 7.
  • an air-blasting device 5 is disposed at a suitable position in the air flow pipeline 7 after the filter 4; the air flow pipeline 7 communicates the condensing device 6 at a place that between the air-blasting device 5 and air outlet 2.
  • ambient air at a relatively low temperature flows along the air flow pipeline 7 and has a heat exchange in the condensing device 6 with the relatively humid hot air which enters the condensing channel 25 via the air discharge opening 26 of the water tub 20, thus to condense the moisture contained in the hot air.
  • the air flow pipeline 7 is not in communication with the condensing channel 25.
  • a detecting device 8 for detecting the degree of blockage of the filter 4 is disposed at a suitable position adjacent to the filter 4 between the filter 4 and the air-blasting device 5; the detecting device 8 is fitted inside the air flow pipeline 7 by a fixing support 29, and signal detected is transferred to a comparison device via an output wire 30; and in the comparison device 9, the signal value detected by the detecting device 8 is compared with a preset reference value, and then determines the degree of blockage of the filter 4 according to the comparison result.
  • information of the degree of blockage of the filter 4 and whether it needs to be cleaned is displayed by the signal indicating device 10 disposed on the control panel 11.
  • Fig. 3 shows a first embodiment according to the present invention, and as shown in the figure, the detecting device 8 are a self-heating thermistor. Normally, its work temperature is between 150°C and 200°C, and if the temperature is below this range, it will be heated by itself. When blockage of the filter 4 occurs, the air speed of the ambient air entering the air inlet 2 will change correspondingly, and then, the operation status of the self-heating thermistor will also change accordingly.
  • the self-heating thermistor When the air speed is relatively high, the self-heating thermistor is cooled by the ambient air to a relatively low temperature, while in order to maintain the constant temperature in its operation status, it needs to start self-heating, namely to increase the working electric current, and according to the comparison result of the change of operating current and a preset current value in the system, degree of blockage of the filter 4 will be determined.
  • Fig. 4 shows a second embodiment according to the present invention, and as shown in the figure, the detecting device 8 is an impeller-type electric induction flow sensor, which comprises an impeller 31 and a generator 32 which generates power when is driven by the impeller 31; an output end of the generator 32 is connected to the output wire 30.
  • the ambient air introduced from the air inlet 2 drives the impeller 31 to rotate, which make the generator 32 to generate power; if the air speed is relatively high, then the output voltage of the generator 32 is high, which means that there is no blockage around the filter 4 or the blockage is comparatively slight; on the contrary, if the blockage is severe, then the air speed will be relatively low, therefore the output voltage of the generator 32 will also be relatively low.
  • degree of blockage of the filter 4 can be determined, and the user can be promptly informed.
  • Fig. 5 shows a third embodiment according to the present invention, and as shown in the figure, the detecting device 8 is an impeller-type pulse output flow sensor.
  • the impeller-type pulse output flow sensor comprises a number of impeller blades 31, on each of which a magnet 33 is fitted.
  • a Hall integrated circuit module 34 is fitted on the fixing support 29, and an output end of the Hall integrated circuit module 34 is connected to the output wire 30; similar to the impeller-type electric induction flow sensor, when an impeller 31 rotates to an induction area of the Hall integrated circuit module 34, the Hall integrated circuit module 34 outputs a pulse.
  • the comparison device compares this frequency with the reference pulse frequency, if is higher than the preset reference pulse frequency value, it indicates that there is no blockage around the filter 4 or the blockage is comparatively slight; while when it is lower than the preset reference pulse frequency value, it indicates that the air speed at the air inlet is relatively low, and the blockage of the filter 4 is comparatively severe. Therefore the degree of blockage of the filter 4 can be determined according to the frequency of output pulse of the Hall integrated circuit module 34.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Claims (6)

  1. Wäschetrockenvorrichtung (1) mit
    einem Lufteinlass (2) und einem Luftauslass (3) in Verbindung mit Umgebungsluft,
    einem Filter (4), einer Luftstrahlvorrichtung (5), einer Kondensiervorrichtung (6), die zwischen dem Lufteinlass (2) und dem Luftauslass (3) angeordnet und über eine Luftströmungsrohrleitung (7) verbunden sind, und
    einer Erfassungsvorrichtung (8) zum Erfassen eines Blockiergrades des Filters (4),
    dadurch gekennzeichnet, dass sie ferner eine Vergleichsvorrichtung zum Vergleichen eines von der Erfassungsvorrichtung (8) erfassten Signalwerts mit einem voreingestellten Bezugswert sowie eine Signalangabevorrichtung (10) zum Anzeigen des Blockierungsgrades des Filters (4) in Übereinstimmung mit dem Vergleichsergebnis der Vergleichsvorrichtung umfasst, und die Erfassungsvorrichtung (8) zwischen dem Filter (4) und der Luftstrahlvorrichtung (5) angeordnet ist.
  2. Wäschetrockenvorrichtung (1) nach Anspruch 1, dadurch gekennzeichnet, dass die Erfassungsvorrichtung (8) ein selbstaufheizender Thermistor und der voreingestellte Bezugswert ein Temperaturwert ist.
  3. Wäschetrockenvorrichtung (1) nach Anspruch 1, dadurch gekennzeichnet, dass die Erfassungsvorrichtung (8) ein schaufelradartiger elektrischer Induktionsdurchflusssensor ist und der voreingestellte Bezugswert ein Spannungswert ist.
  4. Wäschetrockenvorrichtung (1) nach Anspruch 1, dadurch gekennzeichnet, dass die Erfassungsvorrichtung (8) ein schaufelradartiger Impulsausgabe-Durchflusssensor ist und der voreingestellte Bezugswert ein Impulsfrequenzwert ist.
  5. Wäschetrockenvorrichtung (1) nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Lufteinlass (2) an der Vorderseite der Wäschetrockenvorrichtung (1) angeordnet ist und der Luftauslass (3) an der Rückseite der Wäschetrockenvorrichtung (1) angeordnet ist.
  6. Wäschetrockenvorrichtung (1) nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Signalangabevorrichtung (10) auf einer Steuertafel (11) angeordnet ist.
EP08105369A 2007-09-18 2008-09-18 Trocknungsgerät Not-in-force EP2039825B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2007101327985A CN101392448B (zh) 2007-09-18 2007-09-18 衣物烘干设备

Publications (2)

Publication Number Publication Date
EP2039825A1 EP2039825A1 (de) 2009-03-25
EP2039825B1 true EP2039825B1 (de) 2011-05-25

Family

ID=39892369

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08105369A Not-in-force EP2039825B1 (de) 2007-09-18 2008-09-18 Trocknungsgerät

Country Status (3)

Country Link
EP (1) EP2039825B1 (de)
CN (1) CN101392448B (de)
AT (1) ATE510954T1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108716090A (zh) * 2018-09-13 2018-10-30 惠而浦（中国）股份有限公司 一种用于洗干一体机的直排结构及其烘干控制方法

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CN101929060B (zh) * 2010-08-03 2016-12-07 青岛海尔洗衣机有限公司 一种干衣机智能提醒线屑清理的方法及干衣机
EP2607546A4 (de) * 2010-08-19 2016-03-23 Lg Electronics Inc Waschmaschine mit einer trocknungsfunktion und verfahren zu ihrer steuerung
DE102010039552A1 (de) * 2010-08-20 2012-02-23 BSH Bosch und Siemens Hausgeräte GmbH Wäschebehandlungsgerät mit Siebaufnahme und Verfahren zum Betreiben eines Wäschebehandlungsgeräts mit einem Flusensieb
SI2333149T1 (sl) * 2010-11-22 2014-02-28 V-Zug Ag Sušilnik perila z zaznavalom temperature okolice
CN102797140A (zh) * 2011-05-27 2012-11-28 博西华电器（江苏）有限公司 衣物烘干设备及其控制方法
CN102634962A (zh) * 2012-04-19 2012-08-15 合肥荣事达三洋电器股份有限公司 滚筒洗衣机用烘干过滤系统
JP6484809B2 (ja) * 2015-09-08 2019-03-20 パナソニックＩｐマネジメント株式会社 衣類乾燥装置
CN106592176B (zh) * 2016-11-30 2019-05-21 无锡小天鹅股份有限公司 直排式干衣机和用于直排式干衣机的冷凝装置
CN109750469B (zh) 2017-11-03 2021-05-07 青岛海尔洗涤电器有限公司 一种干衣机
CN109778512B (zh) * 2019-01-30 2022-03-01 中科芯集成电路有限公司 一种干衣机中过滤网检测电路
CN110592910B (zh) * 2019-08-30 2020-11-17 珠海格力电器股份有限公司 过滤装置、判断其堵塞程度的方法、清洗方法和洗衣机
CN111218793B (zh) * 2020-01-07 2023-09-22 珠海格力电器股份有限公司 干衣设备过滤部件脏堵状态检测方法及装置、干衣设备
CN112021985B (zh) * 2020-08-27 2022-04-29 追觅创新科技(苏州)有限公司 一种手持吸尘器及控制方法
CN113417121A (zh) * 2021-07-27 2021-09-21 珠海格力电器股份有限公司 一种冷凝风道组件、衣物处理设备及控制方法
US12031255B2 (en) 2021-10-25 2024-07-09 Whirlpool Corporation Front load all-in-one washer/dryer combo reverse airflow system

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Publication number Priority date Publication date Assignee Title
CN108716090A (zh) * 2018-09-13 2018-10-30 惠而浦（中国）股份有限公司 一种用于洗干一体机的直排结构及其烘干控制方法

Also Published As

Publication number Publication date
EP2039825A1 (de) 2009-03-25
CN101392448B (zh) 2010-12-01
ATE510954T1 (de) 2011-06-15
CN101392448A (zh) 2009-03-25

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