EP1303169A1 - Capteur de température utilisant un élément sensible ainsi que son utilisation - Google Patents

Capteur de température utilisant un élément sensible ainsi que son utilisation Download PDF

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Publication number
EP1303169A1
EP1303169A1 EP02021097A EP02021097A EP1303169A1 EP 1303169 A1 EP1303169 A1 EP 1303169A1 EP 02021097 A EP02021097 A EP 02021097A EP 02021097 A EP02021097 A EP 02021097A EP 1303169 A1 EP1303169 A1 EP 1303169A1
Authority
EP
European Patent Office
Prior art keywords
temperature sensor
protective housing
ceramic
sensor according
sensor element
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.)
Withdrawn
Application number
EP02021097A
Other languages
German (de)
English (en)
Inventor
Matthias Muziol
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.)
Yageo Nexensos GmbH
Original Assignee
Heraeus Sensor Nite GmbH
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
Priority claimed from DE10163549A external-priority patent/DE10163549A1/de
Application filed by Heraeus Sensor Nite GmbH filed Critical Heraeus Sensor Nite GmbH
Publication of EP1303169A1 publication Critical patent/EP1303169A1/fr
Withdrawn legal-status Critical Current

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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
    • H05B3/68—Heating arrangements specially adapted for cooking plates or analogous hot-plates
    • H05B3/74—Non-metallic plates, e.g. vitroceramic, ceramic or glassceramic hobs, also including power or control circuits
    • H05B3/746—Protection, e.g. overheat cutoff, hot plate indicator

Definitions

  • the invention relates to a temperature sensor with at least one sensor element which a protective housing made of heat-resistant ceramic is at least partially surrounded, wherein the sensor element provided with connecting lines in the area of one end of the Protective housing is arranged, while the connecting cables over the other protective housing end are led outside.
  • the invention further relates to its use.
  • DE 27 38 926 A1 describes a protective tube for a thermocouple for continuous measurement the temperature of molten steel known to have an inner ceramic tube with a closed end, which contains the thermocouple, further by an outer quartz tube arranged above the inner ceramic tube is closed to the outside, an annular one between the two concentrically arranged tubes Space is formed by a heat insulating formed in the annular space Interlayer is insulated.
  • the inner ceramic tube is preferably made of aluminum oxide, Beryllium oxide and / or magnesium oxide. However, it is also possible to use metal carbide Use material for the inner ceramic tube.
  • the structure of the protective tube proves to be relatively complex, as it is, for example hardly usable in household appliances, where cheap pricing is usually required should be.
  • EP 0 288 915 B2 describes an electric radiant heater for heating a plate, in particular a glass-ceramic hot plate known, in which on an insulating body electrical heating resistors are arranged at a distance from the plate and at which a rod-shaped temperature sensor of a temperature protection switch between the insulating body and the plate through the heating zone of the radiant heater defining the central area projects; there is at least one cam-like with a small extension in the longitudinal direction of the temperature sensor and this in the central area of the heating zone assigned spacer for maintaining a minimum distance between the insulating body or the resistors arranged thereon and the temperature sensor or the plate as well as to protect against bulging of the insulating body and to stiffen the radiant heater is used.
  • the spacer is in the unheated area of the heating zone arranged and as an upward projection of the insulating body in one piece with the Insulated body formed, the temperature sensor formed with a metallic outer tube is largely rigidly mounted at the respective end and on a switch head of the Temperature protection switch is clamped relatively firmly.
  • the object of the invention is to measure the temperature in radiant heaters, such as those under ceramic hobs are used to carry out, the commonly used electromechanical Rod expansion switch replaced by a resistance temperature sensor shall be.
  • the temperature range to be measured should be between -40 to + 750 ° C.
  • Farther should be a relatively simple cable connection via flat connector, the attachment the temperature sensor should be extremely inexpensive.
  • a temperature-dependent sensor element electrical measuring resistor is provided with a resistance layer, which at least has a metal from the platinum metal group.
  • An essential feature of the invention is the fact that the connecting lines are led to the outside via the other protective housing end, designed as plug contacts are.
  • the heat-resistant ceramic of the protective housing has cordierite; however, it is also possible to use steatite as the heat-resistant ceramic of the protective housing.
  • the protective housing is provided with a connection block for connecting the connection lines (18) with connection contacts.
  • the measuring resistor is advantageously fixed as a sensor element by means of a ceramic encapsulation in the end region of the protective housing; however, it is also possible to cover the measuring resistor as a sensor element in the receiving end region of the protective housing by means of a housing cover.
  • the sensor element can be fixed both by potting and by a housing cover.
  • the protective housing can be an elongated housing which is open at the top, which is advantageously covered with a lid.
  • the temperature sensor is used to form a controlled variable in a control loop, the at least one radiant heater acting thermally on the temperature sensor having.
  • the temperature sensor is advantageously used as a resistance thermometer in the range between a radiant heater and a hotplate, in particular glass-ceramic hotplate an electric cooker.
  • the ceramic as a protective housing or as a protective tube is not more oxidized and therefore does not become black, such as a metallic protective tube; the thermal coupling always remains the same.
  • the ceramic as a protective housing or as a protective tube also serves as an insulator and reduced the insulation distance to be maintained between the glass-ceramic plate and the heating coils Not.
  • the main assembly direction is vertical.
  • the housing serves as a protective tube, as a connection block and for conductor insulation.
  • the flange advantageously positions the housing and fastened the mica lid.
  • the temperature sensor according to the invention is used essentially for temperature measurement a radiant heater, using the maximum temperature at 750 ° C is. Furthermore, there is the possibility of flame monitoring or monitoring of exhaust gas stoves or also hot air arrangements possible.
  • Figures 1a and 1b each show a temperature sensor in a radiator housing Serving tin pot of an electric cooker, the sensor with a surrounding Ceramic housing is guided through a side wall of the tin pot; according to Figure 1b Sensor attached to the tin pot with a separate metal flange.
  • Figure 1a is the metal flange saved.
  • the tin pot has a recess to accommodate the ceramic housing.
  • FIGS. 2a and 2b each show the ceramic housing according to FIGS. 1a and 1b with the temperature sensor, which integrates the connection block, protective tube and insulator.
  • Figures 3a and 3b show a cross section through the ceramic housing, the electrical Conductors to the measuring element are recognizable.
  • connection contacts bent downward can be seen from FIGS. 4a and 4b, Secure stops against slipping.
  • Figure 5 shows the electrical conductor together with the stops against slipping and the connection contact, whereby the bending line can also be seen.
  • FIGS. 6a and 6b each show the metal flange together with metal flags, with FIG 6a corresponds to a side view corresponding to FIG. 3a, while FIG. 6b corresponds to a longitudinal section with 90 ° rotation.
  • FIG. 6c shows a top view of the metal flange, the perspective corresponding to FIG. 1b.
  • FIG. 1a is a trough-shaped ceramic housing as a protective housing 1 of a sensor element 3 provided, the protective housing 1 through the side wall of a tin pot trained radiant heater housing 15 in the inner region 19 between radiant heater 11th and a glass ceramic plate 13 serving as an outer cover is sufficient. That by means of a The cover 7, which can be closed, has a protective housing 1 in the area of its housing 19 directed towards the inner area Measuring tip as the end region 20, the sensor element 3 for temperature measurement, which is connected to the in the protective tube-like part of the Protective housing 1 arranged electrical conductor 4 (only partially recognizable) connectable is. The sensor element 3 is in the area of the end region 20 of the protective housing 1 by means of a ceramic Potting 10 fixed.
  • the heat-resistant ceramic of the protective housing 1 is preferably made of cordierite or made of steatite. So that the mica cover 7 before assembly and bending of the metal flags 16 is not lost, it is secured to the housing with potting or adhesive 17.
  • FIG. 1b A variant of FIG. 1a is shown in FIG. 1b, with an additional, perpendicular to Metal flange 5 bent at the top to improve the stability in the area of the connection contacts 2 is provided. Then it is not necessary to fix the cover 7 with potting, since the flags 6 hold the lid in the housing.
  • the heating coils 14 shown in cross section are also shown in FIGS. 1a and 1b of radiant heater 11 recognizable.
  • FIGS. 2a and 2b that which can optionally be closed by means of a cover made of mica can be closed trough-shaped ceramic housing 1 recognizable from above.
  • the ceramic housing 1 In the area of its measuring tip or in the end region 20, the ceramic housing 1 has the sensor element 3 for temperature measurement on, which via connection conductor 18 each with one of the pairs Elongated electrical conductor 4 connected in the rod-shaped part of the protective housing 1 is.
  • FIG. 2a shows the partially broken view Radiant heater 11 can be seen, which is in a tin pot shown here in fragments 15 is located and secured with flags 16, the protective housing 1 of the sensor.
  • metal flange 5 shown for stable mounting of the ceramic protective housing 1, which after applying a cover (not visible here) to the ceramic protective housing 1 is attached as a metal flange 5 and by turning two metal flags 6 is secured in its position.
  • Conductors and contacts consist of a temperature-resistant Material, e.g. Stainless steel or inconel.
  • the sensor element 3 is optionally with the already described ceramic encapsulation 10 glued into the measuring tip as the end area, or a cover 7 made of a mica plate is inserted into the ceramic housing in such a way that the entire interior structure is covered.
  • Figure 3a shows a cross section through the ceramic protective housing 1 according to Figures 1a and 2a with the electrical conductors 4 located therein, with a part of the fragmentary in the background Radiator housing 15 shown with metal flags located at the top 16 is recognizable. In this embodiment, the metal flags serve to fasten the sensor element.
  • reference number 17 is the potting or adhesive for the lid - as already explained with reference to Figure 1 a.
  • Figure 3b also shows a cross section through the ceramic protective housing 1, however in the background the metal flange 5 already described with reference to FIGS. 1b and 2b is recognizable, the upper edge of which is now provided with the metal flags 6. Also in this one Embodiment, the metal flags are used to attach the sensor.
  • FIG. 4a shows a side view of the connection contacts 2 already known from FIG. 1a, which are bent downwards along a bending line 9 and for connection to a temperature control electronics serve.
  • the radiator housing 15 is shown in fragments.
  • the Stops 12 are intended to prevent slipping when building up the sensor arrangement.
  • FIG. 4b shows an arrangement corresponding to FIG. 4a, but this is used for a device with a metal flange 5 according to FIGS. 1b, 2b and 3b. They are here too downward angled connection contacts 2 recognizable, being on the upper edge of metal flange 5 are the metal flags 6.
  • one of the two conductors leading to the sensor element is 4 shown in a top view, the connection contact 2 along the bending line 9 according to should be turned down.
  • the tongue-shaped stops 12 projecting laterally in each case should prevent slipping during construction.
  • the conductor 4 is either as shown with Stops 12 and connection contact 2 connected or conceivable as a separate part that is welded on must become; Conductor 4 can also be formed as a component of the sensor element be, but then the connection conductors would be omitted.
  • the sheet metal flags 6 secure according to the following figures 6a, 6b, 6c by their protrusion up to and beyond the mica cover also the optionally attachable cover.
  • the design of the metal flange 5 can be varied depending on the application. With a suitable flange the sensor or the ceramic protective housing can also be used for other high-temperature measurements in the range up to 750 ° C.
  • the flange 5 shown is, for example fixed with two screws to the bottom of the radiant heater 11 ( Figure 1b).

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)
  • Electric Stoves And Ranges (AREA)
EP02021097A 2001-10-15 2002-09-23 Capteur de température utilisant un élément sensible ainsi que son utilisation Withdrawn EP1303169A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10150332 2001-10-15
DE10150332 2001-10-15
DE10163549 2001-12-21
DE10163549A DE10163549A1 (de) 2001-10-15 2001-12-21 Temperatur-Sensor mit einem Sensor-Element sowie dessen Verwendung

Publications (1)

Publication Number Publication Date
EP1303169A1 true EP1303169A1 (fr) 2003-04-16

Family

ID=26010363

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02021097A Withdrawn EP1303169A1 (fr) 2001-10-15 2002-09-23 Capteur de température utilisant un élément sensible ainsi que son utilisation

Country Status (2)

Country Link
US (1) US20030072352A1 (fr)
EP (1) EP1303169A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2128530A1 (fr) * 2008-05-30 2009-12-02 Electrolux Home Products Corporation N.V. Dispositif d'interaction

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1568980B2 (fr) † 2004-02-24 2013-08-14 Electrovac AG Capteur de température
US7855632B1 (en) 2005-03-02 2010-12-21 Watlow Electric Manufacturing Company Temperature sensor and method of manufacturing
DE102005057105A1 (de) * 2005-11-25 2007-05-31 E.G.O. Elektro-Gerätebau GmbH Temperaturerfassungseinrichtung für eine Heizeinrichtung sowie ein Verfahren zur Ansteuerung einer Heizeinrichtung
US7997795B2 (en) * 2006-05-02 2011-08-16 Watlow Electric Manufacturing Company Temperature sensors and methods of manufacture thereof
ES1065017Y (es) * 2007-03-08 2007-09-01 Eika S Coop Dispositivo sensor de temperatura dinamico
DE102012110845A1 (de) * 2012-11-12 2014-05-15 Epcos Ag Temperaturfühler und Verfahren zur Herstellung eines Temperaturfühlers

Citations (6)

* Cited by examiner, † Cited by third party
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DE2627373A1 (de) * 1976-06-18 1977-12-22 Ego Elektro Blanc & Fischer Signaleinrichtung an kochgeraeten mit einer glaskeramikkochflaeche
EP0288915A2 (fr) * 1987-05-01 1988-11-02 E.G.O. Elektro-Geräte Blanc u. Fischer Radiateur à rayonnement électrique pour chauffer une plaque, en particulier une plaque vitrocéramique
EP0943870A1 (fr) * 1998-03-20 1999-09-22 Ceramaspeed Limited Dispositif de mesure et de limitation de température
DE19925367A1 (de) * 1998-07-09 2000-01-13 Electrovac Temperatursensor
WO2000028786A1 (fr) * 1998-11-11 2000-05-18 Emerson Electric Co. Resistance chauffante electrique a rayonnement amelioree
DE20015496U1 (de) * 1999-09-09 2000-11-23 Ego Elektro Geraetebau Gmbh Strahlungsheizkörper

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US3974696A (en) * 1974-02-27 1976-08-17 General Electric Company Food thermometer for microwave oven
US4091267A (en) * 1976-07-19 1978-05-23 Texas Instruments Incorporated Self-regulating electric heater
SE7806238L (sv) * 1977-07-02 1979-01-03 Fischer Karl Elektriskt stralningsvermeelement, serskilt for glaskeramikkokhell
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JPS5694257A (en) * 1979-12-28 1981-07-30 Nissan Motor Co Ltd Supporting structure of oxygen sensor element
DE3300733A1 (de) * 1983-01-12 1984-07-12 Robert Bosch Gmbh, 7000 Stuttgart Temperaturfuehler
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DE3703768A1 (de) * 1987-02-07 1988-08-18 Fissler Gmbh Vorrichtung zum erfassen der temperatur einer mittels heizwicklungen oder halogenlampen aufgeheizten glaskeramikplatte
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DE19654773C1 (de) * 1996-12-31 1998-04-23 Schott Glaswerke Verfahren und Vorrichtung zur betrieblichen Messung der Temperatur in mindestens einer Kochzone eines Kochfeldes mit einer Glaskeramikplatte
IT1313951B1 (it) * 1999-12-16 2002-09-26 Whirlpool Co Metodo e dispositivo per rilevare il surriscaldamento di uncontenitore posto su un piano di cottura in vetroceramica durante la
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Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2627373A1 (de) * 1976-06-18 1977-12-22 Ego Elektro Blanc & Fischer Signaleinrichtung an kochgeraeten mit einer glaskeramikkochflaeche
EP0288915A2 (fr) * 1987-05-01 1988-11-02 E.G.O. Elektro-Geräte Blanc u. Fischer Radiateur à rayonnement électrique pour chauffer une plaque, en particulier une plaque vitrocéramique
EP0943870A1 (fr) * 1998-03-20 1999-09-22 Ceramaspeed Limited Dispositif de mesure et de limitation de température
DE19925367A1 (de) * 1998-07-09 2000-01-13 Electrovac Temperatursensor
WO2000028786A1 (fr) * 1998-11-11 2000-05-18 Emerson Electric Co. Resistance chauffante electrique a rayonnement amelioree
DE20015496U1 (de) * 1999-09-09 2000-11-23 Ego Elektro Geraetebau Gmbh Strahlungsheizkörper

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2128530A1 (fr) * 2008-05-30 2009-12-02 Electrolux Home Products Corporation N.V. Dispositif d'interaction
WO2009152912A1 (fr) * 2008-05-30 2009-12-23 Electrolux Home Products Corporation N.V. Dispositif d’interactions
CN102016428B (zh) * 2008-05-30 2013-04-17 伊莱克斯家用产品股份有限公司 交互装置
AU2009261882B2 (en) * 2008-05-30 2013-10-03 Electrolux Home Products Corporation N.V. Interaction device
US8981944B2 (en) 2008-05-30 2015-03-17 Electrolux Home Products Corporation N.V. Interaction device

Also Published As

Publication number Publication date
US20030072352A1 (en) 2003-04-17

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