EP0320862A3 - Positive temperature coefficient thermistor heating pad - Google Patents

Positive temperature coefficient thermistor heating pad Download PDF

Info

Publication number
EP0320862A3
EP0320862A3 EP88120760A EP88120760A EP0320862A3 EP 0320862 A3 EP0320862 A3 EP 0320862A3 EP 88120760 A EP88120760 A EP 88120760A EP 88120760 A EP88120760 A EP 88120760A EP 0320862 A3 EP0320862 A3 EP 0320862A3
Authority
EP
European Patent Office
Prior art keywords
heating pad
pad
temperature coefficient
positive temperature
thermistors
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
EP88120760A
Other versions
EP0320862A2 (en
EP0320862B1 (en
Inventor
David C. Goss
Chandrakant M. Yagnik
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.)
Thermon Manufacturing Co
Original Assignee
Thermon Manufacturing Co
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 Thermon Manufacturing Co filed Critical Thermon Manufacturing Co
Publication of EP0320862A2 publication Critical patent/EP0320862A2/en
Publication of EP0320862A3 publication Critical patent/EP0320862A3/en
Application granted granted Critical
Publication of EP0320862B1 publication Critical patent/EP0320862B1/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
    • H05B3/00—Ohmic-resistance heating
    • H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
    • H05B3/14—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
    • H05B3/141—Conductive ceramics, e.g. metal oxides, metal carbides, barium titanate, ferrites, zirconia, vitrous compounds
    • 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
    • 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
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/002—Heaters using a particular layout for the resistive material or resistive elements
    • H05B2203/005—Heaters using a particular layout for the resistive material or resistive elements using multiple resistive elements or resistive zones isolated from each other
    • 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
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/009—Heaters using conductive material in contact with opposing surfaces of the resistive element or resistive layer
    • 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
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/013—Heaters using resistive films or coatings
    • 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
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/017—Manufacturing methods or apparatus for heaters
    • 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
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/02—Heaters using heating elements having a positive temperature coefficient

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Resistance Heating (AREA)
  • Surface Heating Bodies (AREA)
  • Thermistors And Varistors (AREA)
  • Control Of Resistance Heating (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)

Abstract

A heating pad using positive temperature coefficient thermistors as a primary heat source with the thermistors being electrically and mechanically connected to electrically conductive sheets, preferably woven, with dielectric material preferably separating the conductive sheets. A covering of dielectric material preferably is used to electrically separate the heating pad from the environment. The heating pad construction uses the conductive sheets as the primary heat transfer means from the thermistors, resulting in a relatively even heat distribution over the heating pad. The heating pad is preferably made of materials that are flexible so as to enable the pad to flex to adapt to items of different shapes to be heated by the pad.
EP88120760A 1987-12-14 1988-12-13 Positive temperature coefficient thermistor heating pad Expired - Lifetime EP0320862B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US13247987A 1987-12-14 1987-12-14
US132479 1993-10-06

Publications (3)

Publication Number Publication Date
EP0320862A2 EP0320862A2 (en) 1989-06-21
EP0320862A3 true EP0320862A3 (en) 1990-06-13
EP0320862B1 EP0320862B1 (en) 1995-02-15

Family

ID=22454243

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88120760A Expired - Lifetime EP0320862B1 (en) 1987-12-14 1988-12-13 Positive temperature coefficient thermistor heating pad

Country Status (8)

Country Link
EP (1) EP0320862B1 (en)
JP (1) JPH025390A (en)
AT (1) ATE118664T1 (en)
AU (1) AU611237B2 (en)
CA (1) CA1298338C (en)
DE (1) DE3853056T2 (en)
IN (1) IN171935B (en)
MX (1) MX170020B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06168774A (en) * 1991-01-22 1994-06-14 Ube Ind Ltd Ceramic heater unit
US5592647A (en) * 1991-08-26 1997-01-07 Nippon Tungsten Co., Ltd. PTC panel heater with small rush current characteristic and highly heat insulating region corresponding to heater location to prevent local overheating
JPH0755836Y2 (en) * 1992-03-26 1995-12-20 積水化成品工業株式会社 heater
FR2722937A1 (en) * 1994-05-06 1996-01-26 Michel Jean Francois Industrial or domestic electric heater
US20100199629A1 (en) * 2005-06-22 2010-08-12 Airbus France Systeme d'anti givrage et de degivrage de nacelle de moteur d'aeronef a tapis resistif
CN105376878A (en) * 2014-08-26 2016-03-02 许少君 Self-powered and self-generating heat-conducting fabric material
DE102015203114A1 (en) * 2015-02-20 2016-08-25 Mahle International Gmbh PTC thermistor
DE102017130508A1 (en) 2017-12-19 2019-06-19 Dbk David + Baader Gmbh Flexible planar heater and method for its production
JP7380243B2 (en) * 2020-01-23 2023-11-15 株式会社デンソーウェーブ Sensor housing device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4242567A (en) * 1978-06-05 1980-12-30 General Electric Company Electrically heated hair straightener and PTC heater assembly therefor
FR2496382A1 (en) * 1980-12-13 1982-06-18 Fudickar Kg C S ELECTRIC HEATING DEVICE, PARTICULARLY FOR HEATING ELEMENTS, HOUSEHOLD APPLIANCES OR PRESS PLATES, AND MANUFACTURING METHOD
DE3042420A1 (en) * 1980-11-11 1982-06-24 Fritz Eichenauer GmbH & Co KG, 6744 Kandel Electric heater with flat heating elements - has sheet metal contact strips, with resilient fastening tags, as heater terminals
US4401885A (en) * 1980-10-08 1983-08-30 Nippon Valqua Kogyo Kabushiki Kaisha Planar heat generating device
EP0287898A2 (en) * 1987-04-24 1988-10-26 Thermon Manufacturing Company Flexible, elongated thermistor heating cable

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4330703A (en) * 1975-08-04 1982-05-18 Raychem Corporation Layered self-regulating heating article
JPS6046789B2 (en) * 1976-08-04 1985-10-17 レイケム、コ−ポレ−シヨン electric heating device
CH630456A5 (en) * 1979-06-01 1982-06-15 Hotel Du Rhone Societe Pour L INSTALLATION COMPRISING AT LEAST ONE REFRIGERATED CABINET, FOR HOTEL ROOMS.
DE3046995C2 (en) * 1980-12-13 1988-09-08 C.S. Fudickar Kg, 5600 Wuppertal Electric heating device for heated appliances, household appliances and the like.
US4728779A (en) * 1985-09-27 1988-03-01 Tdk Corporation PTC heating device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4242567A (en) * 1978-06-05 1980-12-30 General Electric Company Electrically heated hair straightener and PTC heater assembly therefor
US4401885A (en) * 1980-10-08 1983-08-30 Nippon Valqua Kogyo Kabushiki Kaisha Planar heat generating device
DE3042420A1 (en) * 1980-11-11 1982-06-24 Fritz Eichenauer GmbH & Co KG, 6744 Kandel Electric heater with flat heating elements - has sheet metal contact strips, with resilient fastening tags, as heater terminals
FR2496382A1 (en) * 1980-12-13 1982-06-18 Fudickar Kg C S ELECTRIC HEATING DEVICE, PARTICULARLY FOR HEATING ELEMENTS, HOUSEHOLD APPLIANCES OR PRESS PLATES, AND MANUFACTURING METHOD
EP0287898A2 (en) * 1987-04-24 1988-10-26 Thermon Manufacturing Company Flexible, elongated thermistor heating cable

Also Published As

Publication number Publication date
AU611237B2 (en) 1991-06-06
ATE118664T1 (en) 1995-03-15
JPH025390A (en) 1990-01-10
EP0320862A2 (en) 1989-06-21
MX170020B (en) 1993-08-04
DE3853056T2 (en) 1995-07-27
IN171935B (en) 1993-02-13
CA1298338C (en) 1992-03-31
EP0320862B1 (en) 1995-02-15
DE3853056D1 (en) 1995-03-23
AU2680988A (en) 1989-06-15

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