EP0245870A1 - Vorrichtung zur Überwachung eines Filters für ein elektrisches Haushaltsgerät - Google Patents

Vorrichtung zur Überwachung eines Filters für ein elektrisches Haushaltsgerät Download PDF

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Publication number
EP0245870A1
EP0245870A1 EP87107068A EP87107068A EP0245870A1 EP 0245870 A1 EP0245870 A1 EP 0245870A1 EP 87107068 A EP87107068 A EP 87107068A EP 87107068 A EP87107068 A EP 87107068A EP 0245870 A1 EP0245870 A1 EP 0245870A1
Authority
EP
European Patent Office
Prior art keywords
monitoring device
machine
filter
circuit
contact
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
EP87107068A
Other languages
English (en)
French (fr)
Other versions
EP0245870B1 (de
Inventor
Graziello Grandin
Maurizio Mori
Giuseppe Frucco
Piero Babuin
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.)
Industrie Zanussi SpA
Original Assignee
Industrie Zanussi SpA
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 Industrie Zanussi SpA filed Critical Industrie Zanussi SpA
Publication of EP0245870A1 publication Critical patent/EP0245870A1/de
Application granted granted Critical
Publication of EP0245870B1 publication Critical patent/EP0245870B1/de
Expired legal-status Critical Current

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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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/10—Filtering 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
    • D06F58/20—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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/087—Water level measuring or regulating devices

Definitions

  • a known filter monitoring device for a laundry dryer comprises a thermostat disposed downstream of the filter with respect to the direction of circulation of the drying air and operatively connected to an indicator lamp visible at the control panel of the machine and adapted to indicate the operative state of the filter.
  • the thermostat senses the temperature of the drying air circulating downstream of the filter, and is calibrated to control the energization of the indicator lamp in the presence of excessively high air temperatures resulting from the reduction of the air flow caused by the complete obturation of the filter by loose fibres and fluff.
  • This monitoring device suffers from the disadvantage, how­ever, that it is automatically deenergized as soon as the machine itself is deenergized at the end of the laundry drying cycle or in response to faulty operation eventually necessitating maintenance operations to be carried out on the machine.
  • the machine finally includes an electronic delay circuit 35 of a per se known type connected between the juncture between circuit breaker 33 and discharge pump 34 on the one side, and on the other side to a first input terminal 37 of a logic AND gate 38 via a diode 39.
  • input terminal 40 and output terminal 41 of AND gate 38 are at zero voltage level, so that thyristor 25 remains turned OFF and indicator lamp 16 does not light up.
  • the device shown in fig. 5 is composed of the same electric components as the device of fig. 1, which are therefore designated by the same reference numerals, with the exception of the pressure switch which in this embodiment is replaced by a thermostat 42 disposed down­stream of the filter in the flow direction of the circul­ating drying air.
  • Thermostat 42 has a movable contact 43 of the normally open type, which remains in its open position as long as the filter is not obstructed, i.e. as long as the air passing through the filter is at a temperature between predeterm­ined limits. Under these conditions indicator lamp 16 thus does not light up.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
EP87107068A 1986-05-16 1987-05-15 Vorrichtung zur Überwachung eines Filters für ein elektrisches Haushaltsgerät Expired EP0245870B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT4572686 1986-05-16
IT45726/86A IT1192081B (it) 1986-05-16 1986-05-16 Dispositivo di controllo del filtro per apparecchi elettrodomestici

Publications (2)

Publication Number Publication Date
EP0245870A1 true EP0245870A1 (de) 1987-11-19
EP0245870B1 EP0245870B1 (de) 1991-09-11

Family

ID=11257771

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87107068A Expired EP0245870B1 (de) 1986-05-16 1987-05-15 Vorrichtung zur Überwachung eines Filters für ein elektrisches Haushaltsgerät

Country Status (4)

Country Link
EP (1) EP0245870B1 (de)
DE (1) DE3772839D1 (de)
ES (1) ES2025578T3 (de)
IT (1) IT1192081B (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3930727A1 (de) * 1989-09-14 1991-03-28 Miele & Cie Anordnung und verfahren zur verschmutzungsgradueberwachung und -anzeige eines flusenfilters und/oder waermetauschers in einem waeschetrockner
EP0807707A3 (de) * 1996-05-14 1998-09-16 Electrolux Zanussi S.p.A. Wäschewaschmaschine mit einer Filterüberwachungsvorrichtung
US6785981B1 (en) 2003-02-19 2004-09-07 In-O-Vate Technologies Restriction detecting systems for clothes dryer exhaust systems

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113786653B (zh) * 2021-10-29 2022-10-25 珠海格力电器股份有限公司 一种净水设备及其控制方法及控制装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2903799A (en) * 1955-06-21 1959-09-15 Philco Corp Drying apparatus
US2950539A (en) * 1957-10-10 1960-08-30 Borg Warner Clothes dryer
DE2135932A1 (de) * 1971-07-15 1973-01-25 Siemens Elektrogeraete Gmbh Nach dem trommelprinzip mit luftumwaelzung arbeitender waeschetrockner
EP0028067A1 (de) * 1979-09-12 1981-05-06 Kenwood Manufacturing Company Limited Waschmaschine mit Verstopfungsanzeige für den Abfluss

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2903799A (en) * 1955-06-21 1959-09-15 Philco Corp Drying apparatus
US2950539A (en) * 1957-10-10 1960-08-30 Borg Warner Clothes dryer
DE2135932A1 (de) * 1971-07-15 1973-01-25 Siemens Elektrogeraete Gmbh Nach dem trommelprinzip mit luftumwaelzung arbeitender waeschetrockner
EP0028067A1 (de) * 1979-09-12 1981-05-06 Kenwood Manufacturing Company Limited Waschmaschine mit Verstopfungsanzeige für den Abfluss

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 2, no. 83 (M-78), 6th July 1978, page 2308 M 78; & JP-A-53 53 166 (HITACHI SEISAKUSHO K.K.) 15-05-1978 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3930727A1 (de) * 1989-09-14 1991-03-28 Miele & Cie Anordnung und verfahren zur verschmutzungsgradueberwachung und -anzeige eines flusenfilters und/oder waermetauschers in einem waeschetrockner
EP0807707A3 (de) * 1996-05-14 1998-09-16 Electrolux Zanussi S.p.A. Wäschewaschmaschine mit einer Filterüberwachungsvorrichtung
US5829275A (en) * 1996-05-14 1998-11-03 Electrolux Zanussi Elettrodomestici S.P.A. Clothes washing machine with lint filter monitor
US6785981B1 (en) 2003-02-19 2004-09-07 In-O-Vate Technologies Restriction detecting systems for clothes dryer exhaust systems

Also Published As

Publication number Publication date
IT1192081B (it) 1988-03-31
EP0245870B1 (de) 1991-09-11
DE3772839D1 (de) 1991-10-17
IT8645726A0 (it) 1986-05-16
ES2025578T3 (es) 1992-04-01

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