EP0579170A3 - Armored electric resistor for washing machines and the like, including heat-sensitive switching means for protection against overheating - Google Patents

Armored electric resistor for washing machines and the like, including heat-sensitive switching means for protection against overheating Download PDF

Info

Publication number
EP0579170A3
EP0579170A3 EP19930111199 EP93111199A EP0579170A3 EP 0579170 A3 EP0579170 A3 EP 0579170A3 EP 19930111199 EP19930111199 EP 19930111199 EP 93111199 A EP93111199 A EP 93111199A EP 0579170 A3 EP0579170 A3 EP 0579170A3
Authority
EP
European Patent Office
Prior art keywords
protection against
switching means
against overheating
sensitive switching
washing machines
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
EP19930111199
Other languages
German (de)
French (fr)
Other versions
EP0579170B1 (en
EP0579170A2 (en
Inventor
Carlo Bianco
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.)
CEBI SpA
Original Assignee
CEBI 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 CEBI SpA filed Critical CEBI SpA
Publication of EP0579170A2 publication Critical patent/EP0579170A2/en
Publication of EP0579170A3 publication Critical patent/EP0579170A3/en
Application granted granted Critical
Publication of EP0579170B1 publication Critical patent/EP0579170B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B1/00—Details of electric heating devices
    • H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0202—Switches
    • H05B1/0205—Switches using a fusible material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/74—Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
    • H01H37/76—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/78—Heating arrangements specially adapted for immersion heating
    • H05B3/82—Fixedly-mounted immersion heaters

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Adjustable Resistors (AREA)
  • Thermistors And Varistors (AREA)
  • Resistance Heating (AREA)
  • Fuses (AREA)
  • Thermally Actuated Switches (AREA)

Abstract

A resistor (10) comprising a tubular sheath (11) for protecting the resistor and heat-sensitive switching means for protection against overheating. These means include normally-closed fixed and movable contacts (22a, 24a, 26a, 26b) and pusher elements (27) for the quick opening of the contacts. The pushers are controlled by respective pre-loaded elastic means (33) normally kept under tension by traction elements (31) which are rigidly coupled by stop elements (34) made of fusible material which are associated with the sheath (11). When a preset sheath temperature is exceeded, the stop elements (34) melt and release the pre-loaded elastic means (33) opening the contacts.
EP93111199A 1992-07-14 1993-07-13 Armored electric resistor for washing machines, including heat-sensitive switching means for protection against overheating Expired - Lifetime EP0579170B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO920599A IT1257915B (en) 1992-07-14 1992-07-14 ARMORED ELECTRIC RESISTANCE FOR WASHING MACHINES AND SIMILAR, INCORPORATING THERMAL SENSITIVE MEANS OF PROTECTION AGAINST OVER TEMPERATURES
ITTO920599 1992-07-14

Publications (3)

Publication Number Publication Date
EP0579170A2 EP0579170A2 (en) 1994-01-19
EP0579170A3 true EP0579170A3 (en) 1994-02-02
EP0579170B1 EP0579170B1 (en) 1998-05-20

Family

ID=11410606

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93111199A Expired - Lifetime EP0579170B1 (en) 1992-07-14 1993-07-13 Armored electric resistor for washing machines, including heat-sensitive switching means for protection against overheating

Country Status (4)

Country Link
EP (1) EP0579170B1 (en)
DE (1) DE69318630T2 (en)
ES (1) ES2116370T3 (en)
IT (1) IT1257915B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19505621A1 (en) * 1995-02-18 1996-08-22 Ego Elektro Blanc & Fischer Overheating protection for electrical heating devices
IT1391862B1 (en) 2008-09-23 2012-01-27 Indesit Co Spa WASHING MACHINE, IN PARTICULAR A WASHING MACHINE, A WASHING MACHINE OR A DISHWASHER PROVIDED WITH A TEMPERATURE DETECTION DEVICE FOR THE ELECTRIC HEATING WARMING RESISTANCE OF THE WASHING LIQUID.

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE654037C (en) * 1934-02-07 1937-12-08 Voigt & Haeffner Akt Ges Automatic temperature-dependent switch on electrically heated devices
US2213722A (en) * 1937-12-30 1940-09-03 John E Smith Electrical heating unit
GB686800A (en) * 1950-08-25 1953-01-28 R E Thompson & Company Sunbury Improvements in temperature-sensitive safety cut-outs for electric heaters
GB704204A (en) * 1950-12-07 1954-02-17 Simpson Robert An improved safety device for use with electrical appliances
US2778917A (en) * 1954-03-22 1957-01-22 Sullivan Valve & Engineering Co Electrical safety control apparatus
GB2173045A (en) * 1985-03-28 1986-10-01 Otter Controls Ltd Electric heating elements

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE654037C (en) * 1934-02-07 1937-12-08 Voigt & Haeffner Akt Ges Automatic temperature-dependent switch on electrically heated devices
US2213722A (en) * 1937-12-30 1940-09-03 John E Smith Electrical heating unit
GB686800A (en) * 1950-08-25 1953-01-28 R E Thompson & Company Sunbury Improvements in temperature-sensitive safety cut-outs for electric heaters
GB704204A (en) * 1950-12-07 1954-02-17 Simpson Robert An improved safety device for use with electrical appliances
US2778917A (en) * 1954-03-22 1957-01-22 Sullivan Valve & Engineering Co Electrical safety control apparatus
GB2173045A (en) * 1985-03-28 1986-10-01 Otter Controls Ltd Electric heating elements

Also Published As

Publication number Publication date
ITTO920599A0 (en) 1992-07-14
DE69318630D1 (en) 1998-06-25
IT1257915B (en) 1996-02-16
DE69318630T2 (en) 1998-09-10
ITTO920599A1 (en) 1994-01-14
EP0579170B1 (en) 1998-05-20
EP0579170A2 (en) 1994-01-19
ES2116370T3 (en) 1998-07-16

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