ES361379A1 - Self-regulated heating device - Google Patents

Self-regulated heating device

Info

Publication number
ES361379A1
ES361379A1 ES361379A ES361379A ES361379A1 ES 361379 A1 ES361379 A1 ES 361379A1 ES 361379 A ES361379 A ES 361379A ES 361379 A ES361379 A ES 361379A ES 361379 A1 ES361379 A1 ES 361379A1
Authority
ES
Spain
Prior art keywords
oven
ptc
heating element
leads
temperature
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
ES361379A
Other languages
Spanish (es)
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.)
Texas Instruments Inc
Original Assignee
Texas Instruments Inc
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 Texas Instruments Inc filed Critical Texas Instruments Inc
Publication of ES361379A1 publication Critical patent/ES361379A1/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/02—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient
    • H01C7/022—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient mainly consisting of non-metallic substances
    • 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
    • G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
    • G05D23/24—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. a thermistor
    • G05D23/2401—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. a thermistor using a heating element as a sensing element
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/05—Holders; Supports
    • H03H9/08—Holders with means for regulating temperature
    • 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
    • H05B3/0014—Devices wherein the heating current flows through particular resistances

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Ceramic Engineering (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Acoustics & Sound (AREA)
  • Resistance Heating (AREA)
  • Electric Stoves And Ranges (AREA)
  • Cookers (AREA)

Abstract

Apparatus for providing a relatively constant ambient for temperature sensitive devices in which an inner oven, adapted to hold such devices, containing a heating element formed of material having a steep-sloped positive temperature coefficient of resistance (hereinafter referred to as PTC) above a threshold or anomaly temperature is placed within an outer oven containing at least one heating element formed of PTC material having a lower threshold or anomaly temperature than that of the inner oven's heating element. These heating elements also act as their own temperature regulators. The preferred embodiment employs a single toroidal PTC element located about a component mounting can. Leads connected to this heating element and the component leads are guided along the sidewalls of the electrically insulating housing of the inner oven. The entire inner oven is mounted in a heat conductive shell in which are fitted in recesses at two opposite ends toroidal PTC elements. Leads connected to the outer oven heating elements and the other leads are threaded through guide members placed in aligned apertures in the outer oven shell and are connected to terminals mounted in a base. The heating elements are locked in place by electrically insulating potting material. The heating elements are electrically connected in parallel.
ES361379A 1967-12-20 1968-12-13 Self-regulated heating device Expired ES361379A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US69200467A 1967-12-20 1967-12-20

Publications (1)

Publication Number Publication Date
ES361379A1 true ES361379A1 (en) 1970-08-16

Family

ID=24778887

Family Applications (1)

Application Number Title Priority Date Filing Date
ES361379A Expired ES361379A1 (en) 1967-12-20 1968-12-13 Self-regulated heating device

Country Status (7)

Country Link
US (1) US3646315A (en)
BR (1) BR6804793D0 (en)
DE (1) DE1814682A1 (en)
ES (1) ES361379A1 (en)
FR (1) FR1595972A (en)
GB (1) GB1237717A (en)
NL (1) NL6817981A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5137014B2 (en) * 1971-08-18 1976-10-13
US3749879A (en) * 1971-12-27 1973-07-31 Texas Instruments Inc Apparatus for providing controlled temperature ambient
US3805022A (en) * 1972-10-10 1974-04-16 Texas Instruments Inc Semiconducting threshold heaters
FR2447593A2 (en) * 1978-08-11 1980-08-22 Thomson Csf TEMPERATURE SELF-REGULATING DEVICE AND ITS APPLICATION TO TEMPERATURE MEASUREMENT BY THERMOELECTRIC TORQUE
DE3048452C2 (en) * 1980-12-22 1983-08-25 Kabelwerke Reinshagen Gmbh, 5600 Wuppertal Electric heater
DE29502570U1 (en) * 1995-02-16 1995-04-06 Bosch-Siemens Hausgeräte GmbH, 81669 München Oven / roasting oven with a thermostatically controlled motor fan

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2861163A (en) * 1956-07-11 1958-11-18 Antioch College Heating element
US3007023A (en) * 1958-03-05 1961-10-31 Amphenol Borg Electronics Corp Temperature control device for a frequency standard generator
US3041548A (en) * 1960-05-11 1962-06-26 Lavoie Lab Inc Temperature control systems
US3243753A (en) * 1962-11-13 1966-03-29 Kohler Fred Resistance element

Also Published As

Publication number Publication date
DE1814682A1 (en) 1969-07-24
GB1237717A (en) 1971-06-30
US3646315A (en) 1972-02-29
NL6817981A (en) 1969-06-24
BR6804793D0 (en) 1973-02-13
FR1595972A (en) 1970-06-15

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