GB1076433A - Improvements in or relating to electrically heated blankets - Google Patents

Improvements in or relating to electrically heated blankets

Info

Publication number
GB1076433A
GB1076433A GB11621/66A GB1162166A GB1076433A GB 1076433 A GB1076433 A GB 1076433A GB 11621/66 A GB11621/66 A GB 11621/66A GB 1162166 A GB1162166 A GB 1162166A GB 1076433 A GB1076433 A GB 1076433A
Authority
GB
United Kingdom
Prior art keywords
diode
relay
electrically heated
heating element
blanket
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
GB11621/66A
Inventor
August E F Fickweiler
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.)
INDOHEEM NV
Original Assignee
INDOHEEM NV
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 INDOHEEM NV filed Critical INDOHEEM NV
Publication of GB1076433A publication Critical patent/GB1076433A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/22—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices
    • H02H7/226—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices for wires or cables, e.g. heating wires
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/1919—Control of temperature characterised by the use of electric means characterised by the type of controller
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/32—Insulated conductors or cables characterised by their form with arrangements for indicating defects, e.g. breaks or leaks
    • 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
    • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
    • H05B3/34—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater flexible, e.g. heating nets or webs
    • H05B3/342—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater flexible, e.g. heating nets or webs heaters used in textiles

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Resistance Heating (AREA)

Abstract

1,076,433. Safety arrangements for electrically heated blankets. INDOHEEM N.V. March 16, 1966 [March 16, 1965], No. 11621/66. Heading H2H. A safety device for an electrically heated blanket comprises a heating element 6 for the blanket which is supplied from an A.C. source 1, 2 by way of the normally open contacts 3, 4 of a relay 10 and a diode 5, the arrangement being such that current passes through the heating element during the half cycle when the supply terminal 1 is positive with respect to terminal 2. During the other half cycle the full supply voltage appears across the diode 5 and this voltage is rectified by a diode 7 to charge a capacitor 8 so as to energize the winding of the relay 10 thereby to maintain closed the contacts 3, 4 which are initially closed manually. Thus a fault such as an open circuit in the heating element circuit, a breakdown of the diode 5 or a short circuit between the element 6 and a protective conductive sheath 13 therearound will interrupt the charging of the capacitor 8 and hence de-energize the winding of the relay 10. A bi-metal switching device 11, 12 may be used to provide automatic control of the blanket temperature.
GB11621/66A 1965-03-16 1966-03-16 Improvements in or relating to electrically heated blankets Expired GB1076433A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6503347A NL126267C (en) 1965-03-16 1965-03-16

Publications (1)

Publication Number Publication Date
GB1076433A true GB1076433A (en) 1967-07-19

Family

ID=19792669

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11621/66A Expired GB1076433A (en) 1965-03-16 1966-03-16 Improvements in or relating to electrically heated blankets

Country Status (3)

Country Link
DE (1) DE1565595A1 (en)
GB (1) GB1076433A (en)
NL (1) NL126267C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2201557A (en) * 1987-02-13 1988-09-01 David Stanley Purcell Control for a heating means

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4219857A (en) * 1977-12-22 1980-08-26 General Electric Company Protective method and circuits for sheathed electrical resistance heating units
NZ197765A (en) * 1980-11-03 1985-07-12 Sunbeam Corp Electric blanket safety circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2201557A (en) * 1987-02-13 1988-09-01 David Stanley Purcell Control for a heating means
GB2201557B (en) * 1987-02-13 1990-10-10 David Stanley Purcell Control for a water heater

Also Published As

Publication number Publication date
NL6503347A (en) 1966-09-19
NL126267C (en) 1969-04-15
DE1565595A1 (en) 1970-05-21

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