WO2013034528A1 - Hausgerätvorrichtung mit infrarotsensor - Google Patents
Hausgerätvorrichtung mit infrarotsensor Download PDFInfo
- Publication number
- WO2013034528A1 WO2013034528A1 PCT/EP2012/067154 EP2012067154W WO2013034528A1 WO 2013034528 A1 WO2013034528 A1 WO 2013034528A1 EP 2012067154 W EP2012067154 W EP 2012067154W WO 2013034528 A1 WO2013034528 A1 WO 2013034528A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- infrared sensor
- domestic appliance
- infrared
- appliance device
- unit
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C7/00—Stoves or ranges heated by electric energy
- F24C7/08—Arrangement or mounting of control or safety devices
- F24C7/082—Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination
- F24C7/083—Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination on tops, hot plates
-
- 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
- H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
- H05B2213/07—Heating plates with temperature control means
Definitions
- the invention is based on a domestic appliance device with electrical heating elements and with at least one infrared sensor, which is provided for measuring an intensity of infrared light, according to the preamble of claim 1.
- the invention is based on a domestic appliance device with electrical heating elements and with at least one infrared sensor, which is provided for a measurement of an intensity of infrared light.
- electrical heating elements should be understood in particular elements that are intended to a heating of
- infrared sensor is to be understood as meaning, in particular, a sensor which is intended to measure an intensity of infrared light and, in particular, to determine a wavelength and / or a frequency of an intensity maximum of the infrared light Wavelength between 7,8 ⁇ 10 "7 m and 1 x 10 " 3 m, corresponding to a frequency range of 3 ⁇ 10 11 Hz and 4 ⁇ 10 14 Hz, be understood.
- a heat radiation of a cooking container and / or a food under infrared light should be understood.
- the domestic appliance device at least one optical
- Deflection element which is intended to deflect infrared light to the infrared sensor comprises.
- An "optical deflection element” is to be understood in particular as an element, such as a mirror, a curved hollow optical waveguide or an optical fiber, which is intended to deflect light, preferably infrared light.
- deflecting light from an optical deflecting element it should be understood, in particular, that a direct connection of an entry point of light, in particular infrared light, into the optical deflecting element with an exit point of light from the optical deflecting element extends at least partially outside the element Just given, in particular, a
- Propagation direction of the light before entering the deflecting element from a propagation direction of the light after an exit from the deflecting element
- Change angle between 0 degrees and 180 degrees can be characterized.
- substantially completely reflected is meant, in particular, that at least 80 percent, advantageously at least 90 percent and preferably at least 95 percent of an intensity of incident light are reflected Position with a low heat input into the infrared sensor, which additional cooling elements can be saved.
- the infrared sensor is arranged at a position that differs from a position immediately below a measuring point.
- the infrared sensor is arranged in a position in which the infrared sensor can be connected by a straight line perpendicular to a surface of a component in which the measuring point is located with the measuring point and which preferably maximum 10 cm, In particular, at most 5 cm from the measuring point is removed.
- a position which differs from a position immediately below a measuring point has a lateral distance from the straight line which is greater than at least 2 cm and preferably at least 5 cm. There may be a low heat input in the
- Infrared sensor can be achieved, which can be dispensed with additional cooling elements for electronic elements of the infrared sensor.
- optical deflection element is formed by an optical fiber.
- Use of optical fibers as deflection elements combines the advantage of good low attenuation optical conductivity due to total internal reflection light transmission, low susceptibility to contamination and / or vibration, high flexibility and low cost.
- optical fibers in any length and different diameters are commercially available and can be adapted in particular with little technical effort to desired lengths.
- At least two, advantageously at least three and preferably at least four optical deflection elements are provided for a deflection of infrared light from different measuring points to the infrared sensor. It is thus possible to dispense with an additional infrared sensor for determining the temperature at at least one second measuring point.
- a temperature of the cooking zone can thus be monitored in a cost-saving manner in at least one further cooking zone.
- a temperature of a single cooking zone can be determined at at least one further measuring point, in order in particular to detect uneven heating.
- This embodiment of the invention can be used particularly advantageously in a hob with flexible cooking zones in which all heating elements are advantageously provided with measuring points and are connected via optical deflecting elements to at least one infrared sensor.
- Deflection elements arranged multiplex unit, which is intended to receive signals from multiple measuring points via a common line to the infrared sensor
- a "multiplex unit” is to be understood in particular as meaning a unit which is intended to carry a plurality of signals over one transfer common line to a receiver.
- a transmission of several signals via the common line can be done either by a temporal change of the transmission of individual signals between signals from different signal sources or by modulating data of the signals to a carrier signal, which can then be evaluated either in parallel or serially by the infrared sensor. It can thus be avoided that superimposed in the infrared sensor intensities of infrared light from multiple measuring points and a distortion of the
- a central evaluation unit which is used to determine the temperature
- Measurement data of the at least one infrared sensor is provided proposed. It is thus possible in particular to dispense with a separate evaluation unit of the infrared sensor, as a result of which a power and cooling requirement of the infrared sensor can be reduced and, in particular, in the case of a domestic appliance device with a plurality of infrared sensors, a number of required evaluation units can be advantageously reduced.
- control and / or regulating unit is to be understood as meaning, in particular, an electronic unit which is preferably provided to control and / or regulate at least the electric heating elements
- Arithmetic unit a memory unit with a control and / or control program stored therein, which is intended to be executed by the arithmetic unit.
- integrated is to be understood in particular that the central evaluation unit with the control and / or regulating unit forms a physical unit and preferably that the central evaluation unit of the arithmetic unit of the control and / or
- Control unit is formed. It can thus advantageously a component requirement of
- FIG. 1 shows a schematic representation of an induction hob 10 with a hob plate 12 with two cooking zones, on which cooking containers 30 are placed.
- two electric heating elements 16, 17 designed as induction coils are arranged below the cooking field plate 12, by means of which they are arranged in the
- Gar variousern 30 contained food is heated.
- a temperature monitoring is carried out by means of a measurement of an intensity of emitted infrared light of the cooking container 30 by an infrared sensor 22.
- a measuring area 14 designed as a 15 mm diameter circular-cylindrical region is formed from a material transparent to infrared light, through which infrared light passes through the hob plate 12 and is diverted to the infrared sensor 22 by a device described below.
- Cooking field plate 12 passing infrared light is deflected by means of optical deflection elements 18, 18 ', 19 to the infrared sensor 22.
- the optical deflection elements 18, 19 are designed as optical fibers, in which the infrared light is passed through total internal reflection.
- the optical deflection elements 18 and 19 extend largely in a straight line, except for in each case two points at which a change in direction by 90 degrees takes place within a bend of the optical fibers with a bending radius of 30 mm.
- the optical deflecting element 18 ' represents an alternative realization and is designed as an infrared mirror, which together with other, not shown
- Infrared mirrors causes a deflection of the infrared light within a hollow light channel to the infrared sensor 22.
- the infrared light deflected by the deflection elements 18, 18 ', 19 lays a total distance of 40 cm up to the infrared sensor 22.
- the infrared sensor 22 is at a position different from a position immediately below a measuring point 14 10 cm below the hob plate 12 and arranged in the same lateral distance from the measuring points 14 and thus the cooking zones. Due to this position, the infrared sensor 22 is arranged centrally in order to be able to receive infrared light from a plurality of measuring points 14 equally well.
- the position achieves a low heat input into the infrared sensor 22, as a result of which cooling elements for cooling the electronics of the infrared sensor 22 can be dispensed with.
- a multiplex unit 20 is arranged, which is intended to receive signals from several
- the multiplex unit 20 is for this purpose designed as a switching unit, which switches at a time interval of 600 ms between originating from different measuring points 14 signals of infrared light and forwards the corresponding signal to the infrared sensor 22.
- the multiplex unit 20 can in principle forward signals from a multiplicity of different measuring points 14 to the infrared sensor 22 in temporal change.
- the infrared sensor 22 is formed of a semiconductor sensor of indium gallium arsenide and adapted thereto, in particular, intensities of infrared light in one
- Wavelength range between 1, 2 ⁇ and 2.4 ⁇ to measure.
- the intensity of incoming infrared light is measured, a measurement being completed within a measurement period of 100 ms, and measurement data of the intensity is output as an electrical signal having an amplitude proportional to the intensity of the infrared light.
- measurement data are transmitted via a data link 28 to a central evaluation unit 24 integrated in a control and regulation unit 26, in which a temperature determination from the measurement data of the infrared sensor 22
- the temperature determination is made.
- the temperature determination is provided by a calculation of the corresponding temperature in a computing unit of the control and regulation unit 26, which forms the central evaluation unit 24.
- the control and regulation unit 26 which forms the central evaluation unit 24.
- Temperature determination can be performed by comparing the measurement data of the infrared sensor 22 with reference data in the central evaluation unit 24.
- the control unit 26 controls the electric heating element 16, 17 of the cooking zone associated with the corresponding measuring point 14 in such a way that a heating power demanded by a user via a control unit, not shown, for the cooking zone is made available.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electric Stoves And Ranges (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112012003678.6T DE112012003678A5 (de) | 2011-09-05 | 2012-09-04 | Hausgerätvorrichtung mit Infrarotsensor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ESP201131454 | 2011-09-05 | ||
ES201131454 | 2011-09-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013034528A1 true WO2013034528A1 (de) | 2013-03-14 |
Family
ID=46796602
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2012/067154 WO2013034528A1 (de) | 2011-09-05 | 2012-09-04 | Hausgerätvorrichtung mit infrarotsensor |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE112012003678A5 (de) |
WO (1) | WO2013034528A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2535878A1 (es) * | 2013-11-15 | 2015-05-18 | Bsh Electrodomésticos España, S.A. | Campo de cocción con sensor de temperatura |
WO2017013505A1 (de) | 2015-07-20 | 2017-01-26 | BSH Hausgeräte GmbH | Kochfeldvorrichtung |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1094688A2 (de) * | 1999-10-22 | 2001-04-25 | General Electric Company | Kochfeld und Überwachungssystem, versehen mit der Erfassung von Kennmerken eines Küchengeräts durch ein festes oberflächiges Kochfeld |
EP1217873A2 (de) * | 2000-12-21 | 2002-06-26 | E.G.O. ELEKTRO-GERÄTEBAU GmbH | Verfahren und Vorrichtung zur Erfassung der Temperatur eines Kochgefässes |
US6538238B1 (en) * | 2002-02-12 | 2003-03-25 | General Electric Company | Long term calibration of sensor assembly for glass-ceramic cooktop appliance |
-
2012
- 2012-09-04 WO PCT/EP2012/067154 patent/WO2013034528A1/de active Application Filing
- 2012-09-04 DE DE112012003678.6T patent/DE112012003678A5/de active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1094688A2 (de) * | 1999-10-22 | 2001-04-25 | General Electric Company | Kochfeld und Überwachungssystem, versehen mit der Erfassung von Kennmerken eines Küchengeräts durch ein festes oberflächiges Kochfeld |
EP1217873A2 (de) * | 2000-12-21 | 2002-06-26 | E.G.O. ELEKTRO-GERÄTEBAU GmbH | Verfahren und Vorrichtung zur Erfassung der Temperatur eines Kochgefässes |
US6538238B1 (en) * | 2002-02-12 | 2003-03-25 | General Electric Company | Long term calibration of sensor assembly for glass-ceramic cooktop appliance |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2535878A1 (es) * | 2013-11-15 | 2015-05-18 | Bsh Electrodomésticos España, S.A. | Campo de cocción con sensor de temperatura |
WO2017013505A1 (de) | 2015-07-20 | 2017-01-26 | BSH Hausgeräte GmbH | Kochfeldvorrichtung |
Also Published As
Publication number | Publication date |
---|---|
DE112012003678A5 (de) | 2014-07-10 |
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