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GB2273007A - Improvements relating to thermally-responsive controls - Google Patents

Improvements relating to thermally-responsive controls

Info

Publication number
GB2273007A
GB2273007A GB9326570A GB9326570A GB2273007A GB 2273007 A GB2273007 A GB 2273007A GB 9326570 A GB9326570 A GB 9326570A GB 9326570 A GB9326570 A GB 9326570A GB 2273007 A GB2273007 A GB 2273007A
Authority
GB
United Kingdom
Prior art keywords
cut
outs
appliance
thermally
response
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
GB9326570A
Other versions
GB2273007B (en
GB9326570D0 (en
Inventor
Neill Robert Andrew O
Robert Henry Hadfield
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.)
Otter Controls Ltd
Original Assignee
Otter Controls Ltd
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 Otter Controls Ltd filed Critical Otter Controls Ltd
Priority to GB9510170A priority Critical patent/GB2288294B/en
Publication of GB9326570D0 publication Critical patent/GB9326570D0/en
Publication of GB2273007A publication Critical patent/GB2273007A/en
Application granted granted Critical
Publication of GB2273007B publication Critical patent/GB2273007B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
    • H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
    • H02H5/047—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature using a temperature responsive switch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/12—Means for adjustment of "on" or "off" operating temperature
    • H01H37/14—Means for adjustment of "on" or "off" operating temperature by anticipatory electric heater
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/32—Thermally-sensitive members
    • H01H37/52—Thermally-sensitive members actuated due to deflection of bimetallic element
    • H01H37/54—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H61/00—Electrothermal relays
    • H01H61/02—Electrothermal relays wherein the thermally-sensitive member is heated indirectly, e.g. resistively, inductively

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Control Of Resistance Heating (AREA)
  • Thermally Actuated Switches (AREA)

Abstract

An electrical appliance (1) is protected against overheating by the provision of a plurality of series-connected, auto-reset type thermal cut-outs (2) each located in the appliance in the region of a potential hot-spot, and by the provision of a thermal relay comprising a bistable thermally-responsive switch (3) connected in the main power supply line of the appliance and a heater (4) associated with the switch and connected so as to be energized in the event of any of the cut-outs going open circuit. The thermally-responsive switch (3) will thus operate, due to heat generated by the heater (4) and after a certain time delay, in response to any of the cut-outs (2) operating in response to local overheating. The cut-outs (2) can be located at relatively inaccessible regions of the appliance and do not have to be accessed to be manually reset, and the thermally responsive switch (3) can be located in a readily accessible prominent position. This arrangement overcomes the problem of having to have the appliance attended to by a service engineer whenever a cut-out nuisance trips in response to a transient condition, as is the case conventionally when non-auto-reset type cut-outs are employed. <IMAGE>
GB9326570A 1991-07-02 1992-07-02 Improvements relating to thermally-responsive controls Expired - Fee Related GB2273007B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9510170A GB2288294B (en) 1991-07-02 1992-07-02 Improvements relating to thermally-responsive controls

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB919114247A GB9114247D0 (en) 1991-07-02 1991-07-02 Improvements relating to thermally-responsive controls
PCT/GB1992/001197 WO1993001640A1 (en) 1991-07-02 1992-07-02 Improvements relating to thermally-responsive controls

Publications (3)

Publication Number Publication Date
GB9326570D0 GB9326570D0 (en) 1994-03-16
GB2273007A true GB2273007A (en) 1994-06-01
GB2273007B GB2273007B (en) 1995-11-08

Family

ID=10697665

Family Applications (2)

Application Number Title Priority Date Filing Date
GB919114247A Pending GB9114247D0 (en) 1991-07-02 1991-07-02 Improvements relating to thermally-responsive controls
GB9326570A Expired - Fee Related GB2273007B (en) 1991-07-02 1992-07-02 Improvements relating to thermally-responsive controls

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB919114247A Pending GB9114247D0 (en) 1991-07-02 1991-07-02 Improvements relating to thermally-responsive controls

Country Status (3)

Country Link
AU (1) AU2222692A (en)
GB (2) GB9114247D0 (en)
WO (1) WO1993001640A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2272139A (en) * 1992-10-30 1994-05-04 Black & Decker Inc Control of electric immersion heaters
GB2350232B (en) * 1999-05-17 2003-02-19 Otter Controls Ltd Improvements relating to controls for water boiling vessels
US7578305B2 (en) 2001-02-15 2009-08-25 Steelkor, L.L.C. Kitchenware washers and related methods
US7527062B2 (en) 2001-02-15 2009-05-05 Steelkor, L.L.C. Kitchenware washers and methods of manufacturing the same
US7475698B2 (en) 2005-04-22 2009-01-13 Steelkor, L.L.C. Kitchenware washers and methods of manufacturing the same
DE102004013805A1 (en) 2004-03-20 2005-10-06 Hans Schneider Arrangement for detecting locally occurring excess temperatures
US9265400B2 (en) 2005-04-22 2016-02-23 Duke Manufacturing Co. Commercial kitchenware washers and related methods
EP2326150B1 (en) * 2008-03-17 2015-06-03 Martin Professional ApS Safety loop for a light fixture
GB2554913A (en) * 2016-10-13 2018-04-18 John Fletcher Adam Sensor apparatus for sending overheating
CN110311348A (en) * 2019-08-08 2019-10-08 广东电网有限责任公司 Multifunctional protection device and ammeter box

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB607813A (en) * 1946-02-12 1948-09-06 Metals & Controls Corp Electrical protective apparatus for energy translating devices
DE1129606B (en) * 1961-07-27 1962-05-17 Stotz Kontakt Gmbh Protection circuit for electrical equipment
GB1009886A (en) * 1961-02-11 1965-11-17 John Archer Improvements in or relating to electric heating devices
DE2253619A1 (en) * 1972-11-02 1974-05-16 Diehl Fa POWER REGULATOR FOR ELECTRIC COOKING PLATES
US4337450A (en) * 1980-06-09 1982-06-29 Eaton Corporation Remote control electro-thermal actuator switch
DE3129043A1 (en) * 1981-07-23 1983-02-03 Robert 4800 Bielefeld Stahlschmidt Switching arrangement for electrical machines
WO1987004560A1 (en) * 1986-01-16 1987-07-30 Limitor Ag Safety disconnection device
EP0318265A2 (en) * 1987-11-23 1989-05-31 Otter Controls Limited Improvements relating to thermally responsive electric switches

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB607813A (en) * 1946-02-12 1948-09-06 Metals & Controls Corp Electrical protective apparatus for energy translating devices
GB1009886A (en) * 1961-02-11 1965-11-17 John Archer Improvements in or relating to electric heating devices
DE1129606B (en) * 1961-07-27 1962-05-17 Stotz Kontakt Gmbh Protection circuit for electrical equipment
DE2253619A1 (en) * 1972-11-02 1974-05-16 Diehl Fa POWER REGULATOR FOR ELECTRIC COOKING PLATES
US4337450A (en) * 1980-06-09 1982-06-29 Eaton Corporation Remote control electro-thermal actuator switch
DE3129043A1 (en) * 1981-07-23 1983-02-03 Robert 4800 Bielefeld Stahlschmidt Switching arrangement for electrical machines
WO1987004560A1 (en) * 1986-01-16 1987-07-30 Limitor Ag Safety disconnection device
EP0318265A2 (en) * 1987-11-23 1989-05-31 Otter Controls Limited Improvements relating to thermally responsive electric switches

Also Published As

Publication number Publication date
GB2273007B (en) 1995-11-08
AU2222692A (en) 1993-02-11
GB9114247D0 (en) 1991-08-21
WO1993001640A1 (en) 1993-01-21
GB9326570D0 (en) 1994-03-16

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20080702