GB1170763A - Improvements in controls for electrical heating apparatus - Google Patents

Improvements in controls for electrical heating apparatus

Info

Publication number
GB1170763A
GB1170763A GB1393966A GB1393966A GB1170763A GB 1170763 A GB1170763 A GB 1170763A GB 1393966 A GB1393966 A GB 1393966A GB 1393966 A GB1393966 A GB 1393966A GB 1170763 A GB1170763 A GB 1170763A
Authority
GB
United Kingdom
Prior art keywords
contact
lid
bimetals
selector switch
march
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.)
Expired
Application number
GB1393966A
Inventor
Ronald George Wearing
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 GB1393966A priority Critical patent/GB1170763A/en
Publication of GB1170763A publication Critical patent/GB1170763A/en
Expired 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
    • H05B1/0213—Switches using bimetallic elements
    • 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
    • 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
    • H01H2037/5472—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting having an omega form, e.g. the bimetallic snap element having a ring shape with a central tongue
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H89/00—Combinations of two or more different basic types of electric switches, relays, selectors and emergency protective devices, not covered by any single one of the other main groups of this subclass
    • H01H89/04—Combination of a thermally actuated switch with a manually operated switch

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Central Heating Systems (AREA)
  • Cookers (AREA)

Abstract

1,170,763. Thermal switches; mechanical switches. OTTER CONTROLS Ltd. 17 March, 1967 [29 March, 1966], No. 13939/66. Heading H1N. A control unit, e.g. for an immersion heater having two elements (2, Fig. 1), includes two bimetals 16 adapted to operate at different temperatures and/or heat outputs and mounted on a lid 12 of a housing 11 and a manual selector switch 15 for preselecting one of the bimetals for operation and also being mounted on lid 12. Each bimetal comprises a snapacting element 16 as described in Specification 657,434 or 600,055, carrying a contact 26 on its movable tongue 18 and connected at its bridge through an insulating block (21, Fig. 4) and an L-shaped bracket (22, Fig. 4) to lid 12. Part 23 of bracket (22) carries a double-ended fixed contact, one end 24 being co-operable with contact 26 and the other end 25 being selectively engageable with a double-ended movable contact 33 of the selector switch 15. Switch 15 is operated by a rocking lever 29 having pins 30 embracing L-shaped snap-action spring 31 which has one end secured to lid 12. If three or more bimetals are provided, the selector switch contact may be rotationally mounted, which movement may be remotely controlled through a Bowden cable.
GB1393966A 1966-03-29 1966-03-29 Improvements in controls for electrical heating apparatus Expired GB1170763A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1393966A GB1170763A (en) 1966-03-29 1966-03-29 Improvements in controls for electrical heating apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1393966A GB1170763A (en) 1966-03-29 1966-03-29 Improvements in controls for electrical heating apparatus

Publications (1)

Publication Number Publication Date
GB1170763A true GB1170763A (en) 1969-11-19

Family

ID=10032121

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1393966A Expired GB1170763A (en) 1966-03-29 1966-03-29 Improvements in controls for electrical heating apparatus

Country Status (1)

Country Link
GB (1) GB1170763A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4037080A (en) * 1976-01-07 1977-07-19 Owen Donald R Protection and control of electric immersion-type heater
US4539468A (en) * 1982-03-18 1985-09-03 Otter Controls Limited Water boiling vessel immersion heater with primary and secondary thermal cut-out protection

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4037080A (en) * 1976-01-07 1977-07-19 Owen Donald R Protection and control of electric immersion-type heater
US4539468A (en) * 1982-03-18 1985-09-03 Otter Controls Limited Water boiling vessel immersion heater with primary and secondary thermal cut-out protection

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