EP0709516A1 - Überwachungsvorrichtung für die Reinigung des Kondensators eines Trockners - Google Patents

Überwachungsvorrichtung für die Reinigung des Kondensators eines Trockners Download PDF

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Publication number
EP0709516A1
EP0709516A1 EP95402344A EP95402344A EP0709516A1 EP 0709516 A1 EP0709516 A1 EP 0709516A1 EP 95402344 A EP95402344 A EP 95402344A EP 95402344 A EP95402344 A EP 95402344A EP 0709516 A1 EP0709516 A1 EP 0709516A1
Authority
EP
European Patent Office
Prior art keywords
condenser
memory
volatile memory
mechanical
switch
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.)
Granted
Application number
EP95402344A
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English (en)
French (fr)
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EP0709516B1 (de
Inventor
François Garofalo
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.)
Compagnie Industrielle dAppareils Menagers SA CIAPEM
Original Assignee
Compagnie Industrielle dAppareils Menagers SA CIAPEM
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 Compagnie Industrielle dAppareils Menagers SA CIAPEM filed Critical Compagnie Industrielle dAppareils Menagers SA CIAPEM
Publication of EP0709516A1 publication Critical patent/EP0709516A1/de
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Publication of EP0709516B1 publication Critical patent/EP0709516B1/de
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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 
    • D06F58/24—Condensing 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
    • 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
    • D06F58/45—Cleaning or disinfection of machine parts, e.g. of heat exchangers or filters

Definitions

  • the invention relates to a signaling device for cleaning a dryer condenser. It applies to all types of condenser dryers.
  • Condenser dryers dry laundry in a closed circuit.
  • the hot and humid air is sent to a condenser which is responsible for lowering its humidity.
  • the condenser circuits subjected to this air circulation are loaded with textile fibers torn from the laundry in the drum during the drying cycle. The accumulation of successive drying cycles thus leads to the progressive obstruction of the condenser circuits. From a certain level of fouling, the condenser no longer plays its role, its circuits being loaded with laundry fluff.
  • a solution may consist in displaying a cleaning instruction every n cycles. However, the user will not systematically clean the condenser in the n th cycle. There may then be a difference between the cycles actually carried out between two cleanings and the cycles counted.
  • the object of the invention is to overcome the aforementioned drawbacks.
  • the invention makes it possible in particular to provide a reliable cleaning instruction as a function of time.
  • the invention relates to a signaling device for cleaning a dryer condenser, characterized in that it comprises at least one mechanical memory, a non-volatile electronic memory, means of incrementation non-volatile memory and alert means, the incrementing means incrementing the non-volatile memory at each drying cycle as long as the mechanical memory has not memorized an output and a replacement of the condenser in the dryer laundry, the non-volatile memory being reset each time the capacitor is replaced, the alert means delivering a signal to clean the condenser as soon as the non-volatile memory has reached a given number N.
  • the main advantages of the invention are that it makes it possible to deliver reliable information, that it is economical and that it is simple to implement.
  • Figure 1 shows a possible embodiment of a device according to the invention. It includes at least one mechanical memory 1 associated with a non-volatile electronic memory 2. The state of these two elements is for example read by a microcontroller 3.
  • the mechanical memory 1 stores the resets of the condenser.
  • the mechanical memory 1 is for example a bistable mechanical switch, the latter changing state each time the condenser is replaced.
  • FIG. 2 illustrates the bottom 21 of a dryer where a condenser 22 is replaced after being removed. During each replacement, it activates for example a bistable mechanical switch by means of a contact 23. By this mechanical contact between the condenser and the bistable switch, each time the condenser is replaced, the bistable switch is thus successively opened or closed.
  • FIG. 1 shows an example of connection of the bistable mechanical switch 1 to the microcontroller 3.
  • a terminal 11 of the switch is for example connected to a potential E, 5 volts for example, having the same reference potential 4 as the supply of the microcontroller 3.
  • the second terminal 12 is for example connected to a monitoring input of the microcontroller 3.
  • An action on the contact 23 closes or opens the circuit between these two terminals 11, 12. If the circuit is previously closed, an action if it is opened beforehand, an action closes it.
  • This contact 23 is for example of the push button type. It is for example placed at the bottom of the condenser compartment and is then pushed by the latter during each of its replacements.
  • the microcontroller increments by a unit a counter stored in the non-volatile electronic memory 2, a memory of the EEPROM type for example.
  • N 30 for example, the microcontroller 3 activates alert means 5, an indicator light or a buzzer, or a message for the attention of the user.
  • the alert is maintained as long as the mechanical memory 1 has not signaled a new replacement of the condenser, that is to say for example as long as the bistable mechanical switch constituting this memory has not changed state.
  • the alert is for example given at each new start of the cycle. According to the example diagram in FIG.
  • a closed state corresponds for example to a logic level 1 at the input of the microcontroller, connected to the potential E, equal to 5 volts for example.
  • An open state corresponds to a logic level 0, a resistor R connected between the input of the microcontroller and the reference potential 4 reducing this input to this potential level when the circuit between the two terminals 11, 12 of the bistable switch is open.
  • An advantage of the device according to the invention is that it can memorize a replacement of the condenser whether the dryer is on or off. This notably limits the wear of the components compared to a solution which would require permanent tensioning.
  • the cleaning request signal remains maintained, because the bistable switch has not changed state.
  • the signaling can be produced for example at each cycle, at the beginning or throughout the cycle, by an indicator light, a displayed message or even a buzzer.
  • the device according to the invention is reliable, in particular thanks to the robustness of the bistable mechanical switch and to the fact that no permanent energization of the dryer is necessary to memorize the result of the counting of the cycles as well as the discounts in place of the condenser, as mentioned above. In addition, it ensures that a cleaning instruction is signaled from a given number of cycles N after the previous cleaning of the condenser, and this in all cases.
  • the device according to the invention is also economical, in particular thanks to its simplicity and its ease of implementation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
EP95402344A 1994-10-26 1995-10-20 Überwachungsvorrichtung für die Reinigung des Kondensators eines Trockners Expired - Lifetime EP0709516B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9412809A FR2726298B1 (fr) 1994-10-26 1994-10-26 Dispositif de signalisation pour le nettoyage d'un condensateur de seche-linge
FR9412809 1994-10-26

Publications (2)

Publication Number Publication Date
EP0709516A1 true EP0709516A1 (de) 1996-05-01
EP0709516B1 EP0709516B1 (de) 2000-02-09

Family

ID=9468231

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95402344A Expired - Lifetime EP0709516B1 (de) 1994-10-26 1995-10-20 Überwachungsvorrichtung für die Reinigung des Kondensators eines Trockners

Country Status (4)

Country Link
EP (1) EP0709516B1 (de)
DE (1) DE69514984T2 (de)
ES (1) ES2143023T3 (de)
FR (1) FR2726298B1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2321953A (en) * 1997-02-06 1998-08-12 Aeg Hausgeraete Gmbh A method for monitoring the heat exchanger in a condensation laundry drier
WO2013186114A1 (de) * 2012-06-12 2013-12-19 BSH Bosch und Siemens Hausgeräte GmbH Kondensationstrockner mit einer pumpe sowie verfahren zu seinem betrieb
US8782922B2 (en) 2010-11-24 2014-07-22 Ecolab Usa Inc. Dryer monitoring
US9206543B2 (en) 2011-10-14 2015-12-08 Ecolab Usa Inc. Dryer monitoring
US9249539B2 (en) 2006-09-25 2016-02-02 Ecolab Inc. Determination of dryness of textiles in a dryer

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006013523A1 (de) * 2006-03-23 2007-09-27 BSH Bosch und Siemens Hausgeräte GmbH Hausgerät zur Führung eines mit einem Schwebstoff beladenen Luftstroms durch einen Wärmetauscher
DE102008006347A1 (de) * 2008-01-28 2009-07-30 BSH Bosch und Siemens Hausgeräte GmbH Kondensationstrockner sowie Verfahren zu seinem Betrieb
DE102008040846A1 (de) * 2008-07-29 2010-02-04 BSH Bosch und Siemens Hausgeräte GmbH Kondensationstrockner mit einem Wärmetauscher sowie Verfahren zu seinem Betrieb

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2306139A1 (de) * 1973-02-08 1974-08-22 Licentia Gmbh Waeschetrockner mit trockenluftkondensator
DE3304422A1 (de) * 1983-02-09 1984-08-09 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Verfahren zum auffordern zur entleerung eines kondensat-auffangbehaelters in einem haushalt-waeschetrockner
JPS62289216A (ja) * 1986-06-10 1987-12-16 Matsushita Electric Ind Co Ltd 乾燥機等のフイルタ−清掃時期報知装置
DE3738033A1 (de) * 1987-11-09 1989-05-18 Bosch Siemens Hausgeraete Vorrichtung zur ueberwachung fuer einen haushalt-waeschetrockner

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2306139A1 (de) * 1973-02-08 1974-08-22 Licentia Gmbh Waeschetrockner mit trockenluftkondensator
DE3304422A1 (de) * 1983-02-09 1984-08-09 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Verfahren zum auffordern zur entleerung eines kondensat-auffangbehaelters in einem haushalt-waeschetrockner
JPS62289216A (ja) * 1986-06-10 1987-12-16 Matsushita Electric Ind Co Ltd 乾燥機等のフイルタ−清掃時期報知装置
DE3738033A1 (de) * 1987-11-09 1989-05-18 Bosch Siemens Hausgeraete Vorrichtung zur ueberwachung fuer einen haushalt-waeschetrockner

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 12, no. 181 (C - 499) 27 May 1988 (1988-05-27) *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2321953A (en) * 1997-02-06 1998-08-12 Aeg Hausgeraete Gmbh A method for monitoring the heat exchanger in a condensation laundry drier
US9249539B2 (en) 2006-09-25 2016-02-02 Ecolab Inc. Determination of dryness of textiles in a dryer
US8782922B2 (en) 2010-11-24 2014-07-22 Ecolab Usa Inc. Dryer monitoring
US9206543B2 (en) 2011-10-14 2015-12-08 Ecolab Usa Inc. Dryer monitoring
US9850621B2 (en) 2011-10-14 2017-12-26 Ecolab Usa Inc. Dryer monitoring
WO2013186114A1 (de) * 2012-06-12 2013-12-19 BSH Bosch und Siemens Hausgeräte GmbH Kondensationstrockner mit einer pumpe sowie verfahren zu seinem betrieb

Also Published As

Publication number Publication date
DE69514984T2 (de) 2000-07-06
ES2143023T3 (es) 2000-05-01
FR2726298B1 (fr) 1996-11-29
FR2726298A1 (fr) 1996-05-03
EP0709516B1 (de) 2000-02-09
DE69514984D1 (de) 2000-03-16

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