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WO2006035005A1 - Dispositif de detection de temperature - Google Patents

Dispositif de detection de temperature Download PDF

Info

Publication number
WO2006035005A1
WO2006035005A1 PCT/EP2005/054801 EP2005054801W WO2006035005A1 WO 2006035005 A1 WO2006035005 A1 WO 2006035005A1 EP 2005054801 W EP2005054801 W EP 2005054801W WO 2006035005 A1 WO2006035005 A1 WO 2006035005A1
Authority
WO
WIPO (PCT)
Prior art keywords
temperature sensor
temperature
sensor device
unit
probe
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.)
Ceased
Application number
PCT/EP2005/054801
Other languages
German (de)
English (en)
Inventor
Eric Klemp
Gernot Schimetta
Wolfgang Schnell
Jörg ZAPF
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete 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
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of WO2006035005A1 publication Critical patent/WO2006035005A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/02—Means for indicating or recording specially adapted for thermometers
    • G01K1/024—Means for indicating or recording specially adapted for thermometers for remote indication
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/02—Means for indicating or recording specially adapted for thermometers
    • G01K1/026—Means for indicating or recording specially adapted for thermometers arrangements for monitoring a plurality of temperatures, e.g. by multiplexing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
    • G01K7/32—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using change of resonant frequency of a crystal
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K2207/00—Application of thermometers in household appliances
    • G01K2207/02—Application of thermometers in household appliances for measuring food temperature
    • G01K2207/06—Application of thermometers in household appliances for measuring food temperature for preparation purposes

Definitions

  • the invention is based on a temperature sensor device according to the preamble of claim 1.
  • a temperature sensor device with a temperature probe which comprises a temperature sensor unit for detecting temperature information, which is dependent on a plurality of internal temperatures in different regions of the cooking product.
  • the temperature sensor device extrapolates a core temperature of the food from the time profile and from a spatial progression of the detected internal temperatures.
  • the core temperature represents a temperature information which is dependent on a plurality of detected internal temperatures in different regions of the cooking product.
  • the core temperature is transmitted via a communication cable to a central control unit of a cooking appliance comprising the temperature sensor device.
  • the object of the invention is, in particular, to provide a generic tempera ture sensor device with a temperature probe that is easy to clean and is also inexpensive and robust.
  • the invention is based on a temperature sensor device with a temperature probe and with a temperature sensor unit for detecting at least one temperature information which is dependent on at least two internal temperatures in different regions of a cooking product.
  • the temperature sensor unit comprises a passive communication unit for the wireless transmission of the temperature information.
  • a temperature sensor unit can be achieved with an easy-to-clean temperature probe, which is also inexpensive and robust.
  • the temperature probe can be removed for cleaning by a cooking appliance.
  • the term “provided” should also be understood to mean “designed” and “equipped.”
  • the temperature information may advantageously contain gradient information, so that an extrapolation of the internal temperature to regions of the food , whose internal temperature is not detected directly, can be made possible.
  • the temperature sensor unit is provided for detecting at least one temperature information which depends on at least three internal temperatures in three different regions of the cooking product.
  • an extremum of the internal temperature for example a minium, can be determinable.
  • a parabolic temperature profile can be assumed and a core temperature at a vertex of the parabola can be determined from the internal temperature values.
  • thermo probe has an energy storage unit which is able to store energy at least in the short term.
  • Embodiments of the invention are also conceivable in which the temperature probe uses a temperature gradient applied to the temperature probe in the sense of a heat engine for generating energy.
  • the use of solar cells to power the temperature probe is conceivable.
  • a particularly well stimulable from the outside energy storage unit can be achieved if the energy storage unit is provided for storing vibration energy.
  • the vibration energy in the form of mechanical vibration energy vorlie ⁇ conditions, for example in a spring-mounted mass, or in electromagnetic form, for example, as a vibrating charge density in an excited electromagnetic resonant circuit.
  • a vibration energy which can be determined particularly precisely with regard to its frequency can be achieved if the energy storage unit comprises at least one quartz crystal.
  • An assignment of frequencies to the detected internal temperatures can be achieved if the temperature probe has an energy storage unit for storing oscillation energy in at least two different frequencies.
  • an advantageously large amount of temperature information in the vibration energy can be stored, and the energy store can be advantageously used as an information store.
  • a spatial coding can be achieved if the temperature probe assigned to each region of the food, the internal temperature is detected, a characteristic frequency.
  • a separate translation of the detected internal temperatures into a coding frequency can be avoided if at least one frequency of the vibration energy of the energy storage unit is temperature-dependent.
  • Embodiments of the invention are also conceivable in which the temperature is stored in a modulation frequency which is superimposed on a temperature carrier which is independent of temperature.
  • a comfortable insertion of the temperature probe in the food without a large-scale damage to the food is achievable if the temperature probe has at least one skewer-shaped extension.
  • an immediate detection of the internal temperatures can be made possible, a falsification of the temperature information by long transmission paths can be avoided and installation space can be saved if the temperature sensor unit is integrated in the pike-shaped extension.
  • temperature probes with fork-like extensions which are provided for measuring the internal temperatures of the food in the region of the fork teeth.
  • a cost-saving design and an at least largely shielded from vapors and / or liquids from the food to be cooked interior of the spit-shaped extension is achievable when the temperature probe comprises a sealing device for sealing the spit-shaped extension.
  • thermo contact agent is intended to mean a means whose thermal conductivity exceeds a thermal conductivity of air.
  • 1 shows a cooking appliance with a temperature sensor device
  • Fig. 2 is a temperature probe of the temperature sensor device of Figure 1 in one
  • FIG. 3 shows a detail of a temperature probe of an alternative temperature sensor device
  • FIG. 4 shows a section of a temperature probe of a further alternative temperature sensor device.
  • FIG. 1 shows a cooking appliance 42a designed as oven with a microwave functionality with a temperature sensor device.
  • the temperature sensor device comprises a temperature probe 10a with a handle 24a and with a spit-shaped extension 18a.
  • a temperature sensor unit 12a which is provided for detecting internal temperatures in three different regions of a cooking product 14a, is integrated in the temperature probe 10a.
  • a communication unit comprises a passive induction unit 40a (FIG. 2) with a plurality of inductors integrated in the handle 24a and an active microwave transmitting and receiving unit 26a which integrates into a muffle of the cooking appliance 42a is and is suitable for reading the temperature detected by the temperature sensor unit 12a êttem ⁇ temperature.
  • FIG. 2 shows the temperature probe 10a in a longitudinal section.
  • the extension 18a is formed as a metal tube made of a stainless steel, the front, provided for introduction into the food 14a tip 28a is airtight welded and ground.
  • a wall thickness of the extension 18a is 0.2 mm and is as thin as possible given the requirement of sufficient stability so that a heat capacity of the stainless steel tube influences a temperature measurement as little as possible.
  • the wall thickness of the stainless steel tube can be between 0.15 and 0.3 mm.
  • an end 30a of the extension 18a opposite the tip 28a is sealed by a glass solder leadthrough 32a, so that a vacuum generated during a manufacturing process has an existence in an interior of the skewer-shaped extension 18a.
  • the glass solder lead-through 32a therefore forms a sealing device 20a.
  • the interior is filled with a noble gas, for example with argon, and has a defined negative pressure.
  • the circuit carrier 34a comprises printed conductors, which are not shown explicitly here, and three oscillating crystals 16a, 16a ', 16a ", which are provided for oscillating in each case at a defined resonant frequency and are therefore suitable as energy storage units for storing oscillation energy
  • Circuit carrier 34a is made of a cost-effective thick-film ceramic.
  • Each of the oscillating crystals 16a, 16a ', 16a has a characteristic natural frequency due to an individual dimension and is glued to the circuit carrier 34a by means of a high-temperature conductive adhesive 34a upset.
  • a wire bonding method or a soldering method for example with gold-containing solder pastes, is used.
  • a gold-indium or gold-germanium solder paste can be applied by stencil printing, and the wire bonds can subsequently be remelted.
  • the placement of the circuit substrate 34a takes place in several passes and Pintrans vide for application of the adhesive or the solder are used.
  • the circuit carrier 34a is printed with the conductive adhesive and equipped with the quartz crystals 16a, 16a ', 16a. "Subsequently, the components are tuned in a laser trimming method, whereby the resonant frequencies of the oscillating crystals 16a, 16a', 16a" are tuned and also Tracks and pads can be matched.
  • the circuit carriers 34a produced in the utility are ver ⁇ individualized and protected by a rack 22a made of sheet metal and introduced into the extension 18a, so that the quartz oscillators 16a, 16a ', 16a "are arranged equidistant and backlash in the interior of the extension 18a.
  • Subrack 22a serves as thermal contact means and establishes thermal contact between oscillating crystals 16a, 16a ', 16a "and various regions of an outer surface of extension 18. In operation, these regions come into contact with different regions of food item 14a and the internal temperature of Garguts 14a in the corresponding areas is transmitted via the outer surface of the extension 18a on the quartz oscillators 16a, 16a ', 16a ". As a result, a frequency is assigned to each region in the interior of the cooking product 14a whose temperature is detected, namely the natural frequency of the quartz crystal 16a, 16a ', 16a "arranged in the corresponding region.
  • the oscillating quartets 16a, 16a ', 16a are electrically conductively connected via wires to an induction unit 40a arranged in the grip 24a of the temperature probe 10a, which together with the oscillating quartz forms a passive communication unit.
  • 16a ', 16a is integrated into an independent electromagnetic resonant circuit whose natural frequency is modified by the vibration behavior of the respective quartz crystal 16a, 16a', 16a".
  • the transmitting and receiving unit 26a emits a microwave signal with a carrier frequency of 2.45 GHz into the interior of the cooking appliance 42a
  • the signal is integrated into the handle 24a of the temperature probe 10a
  • Antenna received and converted by means of a diode into a low-frequency signal that excites the quartz oscillators 16a, 16a ', 16a "or the resonant circuits to Eigen ⁇ vibrations.
  • the frequencies of the natural oscillations of the quartz oscillators 16a, 16a ', 16a have a substantially linear temperature dependence, and the signal emitted by the antenna is therefore modulated with three different frequencies, each assigned to one quartz oscillator 16a, 16a', 16a".
  • the transmitting and receiving unit 26a receives the temperature-dependent signal emitted by the antenna and extracts by means of an analyzing unit the frequencies of the oscillating crystals 16a, 16a ', 16a ", which receive a respective one by a mapping table stored in a memory unit of the transmitting and receiving unit 26a
  • the temperatures form temperature information which depends on the internal temperatures of the cooking product 14a in the regions of the oscillating crystals 16a, 16a ', 16a ".
  • An arithmetic unit of the transmitting and receiving unit 26a calculates from the temperatures a parabolic temperature profile along the extension 18a, which approximately describes an actual temperature profile along the extension 18a.
  • a parabolic test function it is also conceivable to use a different course of the test function which appears to be suitable for a person skilled in the art as one of three temperature values.
  • embodiments of the invention are conceivable in which the temperature sensor device, the internal temperatures of the cooking product 14a in more than three Detected areas and corresponding test functions with more than three free parameters are used.
  • the arithmetic unit From the approximately determined parabolic temperature profile, the arithmetic unit finally extracts a minimum temperature at the apex of the parabola, which can be used by a central control unit of the cooking appliance 42a to control and / or regulate a cooking process.
  • the minimum temperature is used as a measure of a Kerntempe ⁇ temperature of the food 14a.
  • FIGS. 1 and 2 show further embodiments of the invention.
  • the description is intended essentially to refer to differences from the exemplary embodiment illustrated in FIGS. 1 and 2.
  • reference is made to the description of FIGS. 1 and 2.
  • Analogous features are provided with the same reference numerals, with letters b and c being added to distinguish the exemplary embodiments.
  • FIG. 3 shows a region of a tip 28b of an extension 18b of a temperature probe 10b of an alternative temperature sensor device.
  • the tip 28b consists of a plug-like closure part, which is welded to a stainless steel tube of the extension 18b.
  • the weld is deburred in the manufacturing process.
  • the glass solder leadthrough 32b is first attached and only subsequently a circuit substrate 34b is introduced.
  • the extension 18b is subsequently sealed by the closure part, which therefore forms a sealing device 20b in this exemplary embodiment.
  • This method offers the advantage that it is possible to dispense with a selective, spatially limited heating of the extension 18b when attaching the glass solder leadthrough 32b.
  • FIG. 1 shows a region of a tip 28b of an extension 18b of a temperature probe 10b of an alternative temperature sensor device.
  • FIG 4 shows a region of an end 30c of an extension 18c of a temperature probe 10c of a further alternative temperature sensor device.
  • the end 30c is sealed with a prefabricated glass leadthrough 32c received in a sleeve 36c.
  • the sleeve 36c is connected in a gastight manner by means of electron beam or laser welding to a stainless steel tube of the extension 18c.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)

Abstract

L'invention concerne un dispositif de détection de température, comportant une sonde de température (10) et une unité de détection de température (12) servant à détecter au moins une information de température qui dépend d'au moins deux températures intérieures en différents points d'un produit à cuire (14). L'objectif de cette invention est de fournir un dispositif de détection de température doté d'une sonde de température (10) robuste, économique et simple à nettoyer. A cet effet, l'unité de détection de température (12) intègre une unité de communication passive (40) permettant la transmission sans fil de l'information de température.
PCT/EP2005/054801 2004-09-30 2005-09-26 Dispositif de detection de temperature Ceased WO2006035005A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004047756.6 2004-09-30
DE102004047756A DE102004047756B4 (de) 2004-09-30 2004-09-30 Temperatursensorvorrichtung

Publications (1)

Publication Number Publication Date
WO2006035005A1 true WO2006035005A1 (fr) 2006-04-06

Family

ID=35134847

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/054801 Ceased WO2006035005A1 (fr) 2004-09-30 2005-09-26 Dispositif de detection de temperature

Country Status (2)

Country Link
DE (1) DE102004047756B4 (fr)
WO (1) WO2006035005A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022221657A1 (fr) * 2021-04-15 2022-10-20 Rj Brands, Llc Sonde de température à connexion sans fil et ses composants résistant à la température
CN115615571A (zh) * 2021-07-16 2023-01-17 德国福维克控股公司 刺入式食物温度计
US11573129B2 (en) 2017-09-12 2023-02-07 Cookperfect Aps Intelligent meat thermometer

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006048753B4 (de) * 2006-10-12 2009-04-16 Elmko Gmbh Einstechfühler zur Messung der Kerntemperatur von Gargut
DE102007018245A1 (de) 2007-03-30 2008-10-02 E.G.O. Elektro-Gerätebau GmbH Temperatursonde für einen Ofen, Ofen und Verfahren zum Betrieb eines Ofens
DE102007019403B4 (de) 2007-04-23 2009-05-14 Miele & Cie. Kg Temperaturmesssonde, insbesondere für ein Haushaltsgerät
EP3121573B1 (fr) 2008-05-08 2020-03-25 Electrolux Home Products Corporation N.V. Four, notamment four de cuisson ou four à micro-ondes
DE102008029230A1 (de) * 2008-06-19 2009-12-24 BSH Bosch und Siemens Hausgeräte GmbH Gargerät
EP2233899B1 (fr) 2009-03-28 2015-09-30 Electrolux Home Products Corporation N.V. Sonde de température, système de sonde de température et dispositif pour le chauffage ou le refroidissement d'une substance, comportant un tel système de sonde de température
DE102012222151A1 (de) * 2012-12-04 2014-06-05 BSH Bosch und Siemens Hausgeräte GmbH Verfahren und Vorrichtung zum Bestimmen einer effektiven Kerntemperatur eines Garguts
DE102015012683B3 (de) 2015-09-23 2016-11-03 H. Heinz Messwiderstände GmbH Temperaturmesssonde
PL3682206T3 (pl) * 2017-09-12 2024-09-02 Cookperfect Aps Inteligentny termometr do mięsa
DE102021113791A1 (de) 2021-05-28 2022-12-01 SIKA Dr. Siebert & Kühn GmbH & Co. KG Temperaturfühler und Verfahren zu dessen Verwendung in einem Temperaturkalibrator
EP4212839A1 (fr) * 2022-01-14 2023-07-19 Vorwerk & Co. Interholding GmbH Thermomètre alimentaire fonctionnant sur batterie et ??procédé de fabrication

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WO2001088563A1 (fr) * 2000-05-18 2001-11-22 Siemens Aktiengesellschaft Procede et dispositif permettant de determiner par radio la position et/ou l'orientation d'au moins un objet
WO2002029434A1 (fr) * 2000-10-04 2002-04-11 Siemens Aktiengesellschaft Procede et dispositif de mesure radio d'au moins un parametre resultant de la rotation d'un objet, en particulier d'un rotor

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EP0743510A1 (fr) * 1995-05-16 1996-11-20 Idento Electronics B.V. Dispositif de mesure pour la mesure sans fil d'une température
DE19945021A1 (de) * 1999-09-20 2001-04-12 Rational Ag Verfahren zum Steuern eines Garprozesses und hierzu verwendbarer Garprozeßfühler
WO2001088563A1 (fr) * 2000-05-18 2001-11-22 Siemens Aktiengesellschaft Procede et dispositif permettant de determiner par radio la position et/ou l'orientation d'au moins un objet
WO2002029434A1 (fr) * 2000-10-04 2002-04-11 Siemens Aktiengesellschaft Procede et dispositif de mesure radio d'au moins un parametre resultant de la rotation d'un objet, en particulier d'un rotor

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11573129B2 (en) 2017-09-12 2023-02-07 Cookperfect Aps Intelligent meat thermometer
WO2022221657A1 (fr) * 2021-04-15 2022-10-20 Rj Brands, Llc Sonde de température à connexion sans fil et ses composants résistant à la température
US12196619B2 (en) 2021-04-15 2025-01-14 Rj Brands, Llc Wirelessly engaged temperature probe and temperature resistant components thereof
CN115615571A (zh) * 2021-07-16 2023-01-17 德国福维克控股公司 刺入式食物温度计

Also Published As

Publication number Publication date
DE102004047756B4 (de) 2012-03-01
DE102004047756A1 (de) 2006-04-06

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