EP1458003A1 - Capteur de température - Google Patents

Capteur de température Download PDF

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Publication number
EP1458003A1
EP1458003A1 EP04450054A EP04450054A EP1458003A1 EP 1458003 A1 EP1458003 A1 EP 1458003A1 EP 04450054 A EP04450054 A EP 04450054A EP 04450054 A EP04450054 A EP 04450054A EP 1458003 A1 EP1458003 A1 EP 1458003A1
Authority
EP
European Patent Office
Prior art keywords
housing
rod
switch
temperature sensor
coefficient
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
EP04450054A
Other languages
German (de)
English (en)
Other versions
EP1458003B1 (fr
Inventor
Dr. Paul Losbichler
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.)
Electrovac AG
Original Assignee
Electrovac AG
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 Electrovac AG filed Critical Electrovac AG
Priority to PL04450054T priority Critical patent/PL1458003T3/pl
Priority to AT04450054T priority patent/ATE329364T1/de
Publication of EP1458003A1 publication Critical patent/EP1458003A1/fr
Application granted granted Critical
Publication of EP1458003B1 publication Critical patent/EP1458003B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • H01H37/46—Thermally-sensitive members actuated due to expansion or contraction of a solid
    • H01H37/48—Thermally-sensitive members actuated due to expansion or contraction of a solid with extensible rigid rods or tubes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/10—Compensation for variation of ambient temperature or pressure
    • 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
    • H01H2037/326—Thermally-sensitive members with radiative heat transfer to the switch, e.g. special absorption surfaces
    • 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
    • H01H37/20—Means for adjustment of "on" or "off" operating temperature by varying the position of the thermal element in relation to switch base or casing
    • 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

Definitions

  • the invention relates to a temperature sensor according to the preamble of claim 1.
  • Such a temperature sensor is e.g. in EP 0 141 923 B. It is in this known solution in the pot of the radiant heater one from the bottom of the pot towering circumferential rib provided, which separates two separately controllable heating coils.
  • the tube of the temperature sensor extends over both heating coils away, wherein
  • the middle part is only on the Area of the central heating coil extends.
  • the two outer parts of the Rods which lie with their front sides against the middle part of the rod, have one Thermal expansion coefficient, at least that of the surrounding pipe corresponds, which is integrally formed, whereas the middle part of the rod is smaller than that of the surrounding pipe.
  • the tube is also formed in three parts, wherein the parts of the tube substantially with those cover the staff.
  • the central portion of the tube has a larger one Thermal expansion coefficient on as the outer sections of the tube and the outer Parts of the rod have a larger thermal expansion coefficient than the middle one Section of the bar.
  • the outer sections, or parts of the tube and the Bar arranged in the region of the outer heating coil. Also in this case it comes to
  • the aim of the invention is to avoid this disadvantage and a temperature sensor of to suggest at the outset, in which a stronger overshoot of the desired Response temperature is avoided with a cold switch housing.
  • the reference numeral 1 denotes a radiant heater which comprises a pot 2, in which a spirally placed heating coil 3 is located in an embedding 4 is embedded.
  • the radiant heater 1 is below a plate 5 made of metal, Glass ceramic, od. The like.
  • Arranged which has the cooking surface 6 at its top.
  • a temperature sensor 7 is arranged, which with a Switch button 18 is in communication, which latter is not shown. It is the Temperature sensor in a simple manner by drilling in the substantially cylindrical Wall of the radiant heater 1, and its pot 2 passed.
  • the temperature sensor 7 is thus exposed to the temperature below the cooking surface. 6 in the radiation space between the cooking surface 6, or the supporting plate 5 and the Heating coil 3 prevails and can thus capture this temperature.
  • the structural design of the temperature sensor 7 is shown in FIG. 3.
  • the temperature sensor 7 comprises an outer tube 8 made of a material a relatively high thermal expansion coefficient, e.g. from a metal, in particular steel, a two-piece rod 9 held in its interior, both of which Parts with L1 and L2 are designated, as well as held in a housing 10 switch 18, at the movable switching contact 11, which is biased against its open position, the rod 9 rests with its part L2 which extends into the housing 10 of the switch 8 hineinerstreckt.
  • the fixed contacts of the switch 18 are denoted by 12 and with Outlets 13 connected.
  • the one end of the tube 8, which may have any cross-section, is completed, this also by an optionally adjustable holder (not shown) for the rod 9, or its part L1 can be carried out. It extends in the built-in state of the temperature sensor 7 of the part L1 of the rod 9 over the range of Radiant heater 1, over which the heating coil 3 extends.
  • the second part of the L2 Bar 9 is located in the region of the wall of the pot 2, which consists of a poorly heat-conducting Material is made, lies in the region of this wall frontally to the part of the rod L1 and extends into the housing 10 of the switch 18, which is outside the Radiant heater 1 is located, but in the boiler room of a cooker that is not closer is shown, is arranged, whereby the housing 10 of the boiler room in the boiler room is exposed to prevailing temperature.
  • the tube 8 of the temperature sensor 7 is fixedly connected to the housing 10 of the switch 18.
  • the temperature sensor of the heat radiation of Heating coil, or in the radiant heater 1 between the heating coil 3 and the plate fifth exposed to prevailing temperature.
  • the tube 8 expands, which considerably larger coefficients of thermal expansion than the part L1 of the rod 9 is stronger, as the rod part L1, whereby the pressure on the movable contact 11 decreases.
  • the contact 11 Upon reaching a corresponding temperature succeeds the contact 11 due to its bias in go over its open position and interrupt the circuit to the heating coil 3.
  • the result is a substantially complete Compensation of the thermal expansion of the housing 10 and thus a substantially complete compensation of the influence of the heating of the housing 10 due to heat diffusing through the wall of the pot 2.
  • the two parts L1, L2 of the rod 9 have different Heat absorption coefficient, wherein the part L2 of the rod 9 is preferably a having lower heat absorption coefficient.
  • the lower one Heat absorption coefficient causes a lower heat absorption or heating of the rod 9, which is why the temperature equilibrium with the housing later is reached.
  • the switching temperature when switching on the heater i. when the housing of the radiant heater is cold, is higher than the switching temperature in Temperature equilibrium state. It therefore comes when switching on cold housing to an overshoot behavior of the temperature sensor. This allows the The cooking performance is optimized, which means that when the heater is switched on cold condition a higher glass transition temperature is available, causing a shortening the time to reach the cooking temperature is reached.
  • the heat absorption coefficient can be adjusted by different colors, different surface design, such as by attaching profilings or different surface roughness and the like. be, or else by different Metallismeengept, such as Al 2 O 3 .

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Electric Stoves And Ranges (AREA)
  • Measuring Fluid Pressure (AREA)
  • Glass Compositions (AREA)
  • Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
  • Surgical Instruments (AREA)
  • Resistance Heating (AREA)
  • Control Of Resistance Heating (AREA)
EP04450054A 2003-03-10 2004-03-08 Capteur de température Expired - Lifetime EP1458003B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL04450054T PL1458003T3 (pl) 2003-03-10 2004-03-08 Czujnik temparatury
AT04450054T ATE329364T1 (de) 2003-03-10 2004-03-08 Temperaturfühler

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0036203A AT412521B (de) 2003-03-10 2003-03-10 Temperaturfühler
AT3622003 2003-03-10

Publications (2)

Publication Number Publication Date
EP1458003A1 true EP1458003A1 (fr) 2004-09-15
EP1458003B1 EP1458003B1 (fr) 2006-06-07

Family

ID=32739107

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04450054A Expired - Lifetime EP1458003B1 (fr) 2003-03-10 2004-03-08 Capteur de température

Country Status (6)

Country Link
US (1) US7119654B2 (fr)
EP (1) EP1458003B1 (fr)
AT (2) AT412521B (fr)
DE (1) DE502004000675D1 (fr)
HK (1) HK1069256A1 (fr)
PL (1) PL1458003T3 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE333141T1 (de) * 2004-02-24 2006-08-15 Electrovac Temperaturfühler
JP4916807B2 (ja) * 2006-01-30 2012-04-18 株式会社ダイヘン 電圧検出用プリント基板及びそれを用いた電圧検出器
GB0717051D0 (en) * 2007-09-01 2007-10-17 Ceramaspeed Ltd Temperature sensor
DE102008052127A1 (de) 2008-07-18 2010-01-28 Micro-Epsilon Messtechnik Gmbh & Co. Kg Temperaturmesseinrichtung und Verfahren zur Temperaturmessung
DE102009038960A1 (de) * 2009-08-19 2011-02-24 E.G.O. Elektro-Gerätebau GmbH Temperaturfühler und Verfahren zur Justierung eines solchen Temperaturfühlers
US20130146582A1 (en) * 2011-12-09 2013-06-13 E.G.O. Elektro-Gerätebau GmbH Heating Device, Cooking Field and Method for Operating a Heating Device
US8933377B2 (en) 2011-12-09 2015-01-13 E.G.O. Elektro-Gerätebau GmbH Control device for an electrical heating device for a cooking field, cooking field and method for operating such an electrical heating device
US8884195B2 (en) 2011-12-09 2014-11-11 E.G.O. Elektro-Gerätebau GmbH Heating device, method of producing a heating device and method for operating a heating device
CN108318057A (zh) * 2018-04-13 2018-07-24 航天科技控股集团股份有限公司 一种补偿热变形的传感器
DE102018213625A1 (de) * 2018-08-13 2020-02-13 Siemens Aktiengesellschaft Schaltanlagentemperaturmessung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE855009C (de) * 1950-11-01 1952-11-10 Erich Dr-Ing Kieback Thermostat
EP0141923A1 (fr) * 1983-09-17 1985-05-22 E.G.O. Elektrogeräte AG Limiteur de température pour plaques de cuisson en vitro-céramique
EP0425752A1 (fr) * 1989-11-03 1991-05-08 C.A.E.M. S.R.L. Thermostat électrique ajustable avec compensation de la température
US5113170A (en) * 1989-09-08 1992-05-12 E.G.O. Elektro-Gerate Blanc U. Fischer Temperature switch
US6304165B1 (en) * 1998-10-09 2001-10-16 E.G.O. Elektro-Geratebau Gmbh Switching device for an electric heating device
US20020149465A1 (en) * 2001-04-17 2002-10-17 Electrovac, Fabrikation Elektrotechnischer Spezialartikel Gesellschaft M.B.H. Temperature limiter, and calibration method for operating a switching contact of a temperature limiter

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4008454A (en) * 1975-11-04 1977-02-15 General Electric Company Differential expansion rod and tube thermostat
US4164642A (en) * 1976-12-20 1979-08-14 Ebert Edward A Radiant-hot air heater
AT376540B (de) * 1983-01-05 1984-11-26 Electrovac Vorrichtung zur regelung bzw. begrenzung wenigstens eines temperaturwertes bzw. eines temperaturbereiches von strahlungs- bzw. kontaktheizkoerpern von elektrischen kochgeraeten
GB8324271D0 (en) * 1983-09-10 1983-10-12 Micropore International Ltd Thermal cut-out device
US4886070A (en) * 1988-05-11 1989-12-12 Thermometrics, Inc. Method of in vivo calibration of a pressure sensor
US5036236A (en) * 1990-05-07 1991-07-30 Hughes Aircraft Company Air gap matching proximity sensor for magnetic bearings
GB2263770B (en) * 1992-01-23 1994-11-02 Ceramaspeed Ltd Device for controlling or limiting temperature in an electric cooking appliance
US5390542A (en) * 1993-12-21 1995-02-21 Measurement Technology International Membrane for a fluid flow meter

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE855009C (de) * 1950-11-01 1952-11-10 Erich Dr-Ing Kieback Thermostat
EP0141923A1 (fr) * 1983-09-17 1985-05-22 E.G.O. Elektrogeräte AG Limiteur de température pour plaques de cuisson en vitro-céramique
US5113170A (en) * 1989-09-08 1992-05-12 E.G.O. Elektro-Gerate Blanc U. Fischer Temperature switch
EP0425752A1 (fr) * 1989-11-03 1991-05-08 C.A.E.M. S.R.L. Thermostat électrique ajustable avec compensation de la température
US6304165B1 (en) * 1998-10-09 2001-10-16 E.G.O. Elektro-Geratebau Gmbh Switching device for an electric heating device
US20020149465A1 (en) * 2001-04-17 2002-10-17 Electrovac, Fabrikation Elektrotechnischer Spezialartikel Gesellschaft M.B.H. Temperature limiter, and calibration method for operating a switching contact of a temperature limiter

Also Published As

Publication number Publication date
ATE329364T1 (de) 2006-06-15
DE502004000675D1 (de) 2006-07-20
PL1458003T3 (pl) 2006-11-30
EP1458003B1 (fr) 2006-06-07
US20040178878A1 (en) 2004-09-16
HK1069256A1 (en) 2005-05-13
US7119654B2 (en) 2006-10-10
AT412521B (de) 2005-03-25
ATA3622003A (de) 2004-08-15

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