EP0740008A3 - Safety switching apparatus against dry operation of electrical heating resistances, particularly for washing machines and dishwashers - Google Patents

Safety switching apparatus against dry operation of electrical heating resistances, particularly for washing machines and dishwashers Download PDF

Info

Publication number
EP0740008A3
EP0740008A3 EP96105206A EP96105206A EP0740008A3 EP 0740008 A3 EP0740008 A3 EP 0740008A3 EP 96105206 A EP96105206 A EP 96105206A EP 96105206 A EP96105206 A EP 96105206A EP 0740008 A3 EP0740008 A3 EP 0740008A3
Authority
EP
European Patent Office
Prior art keywords
dry operation
dishwashers
switches
against dry
switching apparatus
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
EP96105206A
Other languages
German (de)
French (fr)
Other versions
EP0740008B1 (en
EP0740008A2 (en
Inventor
Gismar c/o Whirlpool Europe s.r.l Eck
Margret c/o Whirlpool Europe s.r.l Thumm-Jorge
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.)
Whirlpool Europe BV
Original Assignee
Whirlpool Europe BV
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
Priority claimed from DE19515902A external-priority patent/DE19515902C1/en
Application filed by Whirlpool Europe BV filed Critical Whirlpool Europe BV
Publication of EP0740008A2 publication Critical patent/EP0740008A2/en
Publication of EP0740008A3 publication Critical patent/EP0740008A3/en
Application granted granted Critical
Publication of EP0740008B1 publication Critical patent/EP0740008B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4285—Water-heater 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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/42—Safety arrangements, e.g. for stopping rotation of the receptacle upon opening of the casing door
    • 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 
    • D06F39/04—Heating 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
    • D06F2103/18—Washing liquid level
    • 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
    • D06F2105/28—Electric heating
    • 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
    • D06F34/08—Control circuits or arrangements thereof

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Washing And Drying Of Tableware (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Abstract

The invention relates to a safety switching apparatus against dry operation of electrical resistances, particularly for washing machines and dishwashers, with electromechanical or electronic control systems and level switches for monitoring the water level. Security against dry operation of the heating resistances is considerably improved in that two level switches (NV1,NV2) monitor the normal water level and, incorporated in series, control a switch element (R), in that the switch element triggers the control motor (StM) and switches off the water intake valve (WV), and in that the control motor, after expiry of a predetermined time, by means of control contacts, switches the heating resistance (H) into parallel with the switch element in the heating and washing stage following the water intake stage.
EP96105206A 1995-04-29 1996-04-01 Safety switching apparatus against dry operation of electrical heating resistances, particularly for washing machines and dishwashers Expired - Lifetime EP0740008B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19515902 1995-04-29
DE19515902A DE19515902C1 (en) 1995-03-31 1995-04-29 Safety system for resistance heater in washing machine

Publications (3)

Publication Number Publication Date
EP0740008A2 EP0740008A2 (en) 1996-10-30
EP0740008A3 true EP0740008A3 (en) 1998-01-28
EP0740008B1 EP0740008B1 (en) 2002-08-28

Family

ID=7760763

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96105206A Expired - Lifetime EP0740008B1 (en) 1995-04-29 1996-04-01 Safety switching apparatus against dry operation of electrical heating resistances, particularly for washing machines and dishwashers

Country Status (2)

Country Link
EP (1) EP0740008B1 (en)
ES (1) ES2181820T3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20120057A1 (en) * 2012-01-24 2013-07-25 Indesit Co Spa WASHING MACHINE

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1585767A1 (en) * 1966-07-07 1971-07-29 Kieninger & Obergfell Electronic temperature monitoring device
GB1282124A (en) * 1969-12-05 1972-07-19 Kenwood Mfg Woking Ltd Domestic appliances
DE3228744A1 (en) * 1982-07-31 1984-02-02 Miele & Cie GmbH & Co, 4830 Gütersloh Switching arrangement for the program control of a washing machine or dishwasher
EP0452678A2 (en) * 1990-04-18 1991-10-23 ELECTROLUX ZANUSSI ELETTRODOMESTICI S.p.A. Control assembly for a combined laundry washing and drying machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1585767A1 (en) * 1966-07-07 1971-07-29 Kieninger & Obergfell Electronic temperature monitoring device
GB1282124A (en) * 1969-12-05 1972-07-19 Kenwood Mfg Woking Ltd Domestic appliances
DE3228744A1 (en) * 1982-07-31 1984-02-02 Miele & Cie GmbH & Co, 4830 Gütersloh Switching arrangement for the program control of a washing machine or dishwasher
EP0452678A2 (en) * 1990-04-18 1991-10-23 ELECTROLUX ZANUSSI ELETTRODOMESTICI S.p.A. Control assembly for a combined laundry washing and drying machine

Also Published As

Publication number Publication date
ES2181820T3 (en) 2003-03-01
EP0740008B1 (en) 2002-08-28
EP0740008A2 (en) 1996-10-30

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