WO2007135004A2 - Sensorvorrichtung mit zumindest einem ir-sensor - Google Patents
Sensorvorrichtung mit zumindest einem ir-sensor Download PDFInfo
- Publication number
- WO2007135004A2 WO2007135004A2 PCT/EP2007/054624 EP2007054624W WO2007135004A2 WO 2007135004 A2 WO2007135004 A2 WO 2007135004A2 EP 2007054624 W EP2007054624 W EP 2007054624W WO 2007135004 A2 WO2007135004 A2 WO 2007135004A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sensor
- sensor device
- cap member
- hob
- housing
- 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
- F24C15/00—Details
- F24C15/10—Tops, e.g. hot plates; Rings
- F24C15/102—Tops, e.g. hot plates; Rings electrically heated
- F24C15/105—Constructive details concerning the regulation of the 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
- H05B3/68—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
-
- 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
- H05B2213/05—Heating plates with pan detection means
-
- 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 relates to a sensor device with at least one IR (infrared) sensor, which is designed to detect heat radiation of a cooking vessel arranged on a hob and which comprises a cap element surrounding at least part of the IR sensor.
- IR infrared
- Such sensor devices are already known, wherein these cap elements are formed as a metal cap of the IR sensor and they must be grounded to comply with a variety of regulations. Due to these regulations, this grounding has to be executed sufficiently for special requirements. In general, these regulations serve to reliably avoid carryover of an electrical voltage to accessible parts in the event of a fault in the electronics or in the wiring of the electronics or peripheral devices.
- a temperature sensor which is arranged below a hob, and is designed, for example, as a PTC or NTC resistor.
- This temperature sensor is designed for temperature detection of the hob and includes a housing surrounding the temperature sensor, which is formed of ceramic.
- a temperature sensor arrangement for an electrical heating arrangement is formed, which is arranged below a cooking plate.
- the temperature sensor arrangement comprises at least one temperature-sensitive electrical resistance element in foil form and an electrical insulating element surrounding this resistance element.
- the electrical resistance element is in a ceramic substrate embedded and covered by the electrically insulating member from above. In this embodiment, this temperature sensor is attached to the underside of the hob.
- Object of the present invention is to provide a sensor device which satisfies the above-mentioned rules and beyond can be mounted easily and with little effort. This object is achieved by a sensor device having the features of claim 1.
- a sensor device comprises at least one IR sensor, which is designed to detect thermal radiation of a preparation vessel arranged on a hob.
- the sensor device comprises a cap element, which surrounds the IR sensor at least in regions.
- the cap member is electrically insulated.
- the cap member is thus at least partially formed from such a material that the cap member can be arranged without electrical grounding and thus electrically grounded in or on the sensor device can be attached.
- a detachable or non-detachable mechanical arrangement of the cap can be provided, which also includes the arrangement of these on an outer side, in particular a housing wall, the sensor device.
- a sensor device can be provided which complies with the regulations with regard to ESD resistance.
- it can also be achieved that even in the case of a fault in the electronics or in the wiring or in peripheral devices, a carryover of electrical voltage to touchable parts of this sensor device can be reliably avoided, even if no grounding, in particular this cap element, is given.
- a very simple and low-effort installation of the sensor and in particular of the cap member can be made possible.
- the sensor device is preferably arranged such that at least the IR sensor is arranged above the hob.
- the entire sensor device is arranged above the hob and positioned on an upper surface of the hob. It may be provided that the entire sensor device fixed to the Hob is connected or formed as a separate module and is removable from the hob.
- a cooking sensor system which, in contrast to a fry sensor, does not have sensors below the hob or in a bottom of a preparation vessel, but is preferably arranged at a distance from this preparation vessel on the hob.
- the IR sensor is preferably arranged in a housing and extends at least partially out of this housing. At least the part of the IR sensor protruding from this housing is surrounded by the cap element.
- the IR sensor is preferably surrounded by the cap member like a shell.
- the cap element is advantageously arranged around the part of the IR sensor projecting out of the housing such that a detection region of the IR sensor is not covered by this cap element.
- the cap member is advantageously formed of an electrically insulating material, and preferably, this material has a thermal conductivity which is greater than that of plastic.
- the cap member is formed of an electrically insulating material having a thermal conductivity which is greater than 1 W / mK at temperatures below 1000 ° C, in particular below 500 ° C.
- the thermal conductivity of the material below 500 ° C is greater than 5 W / mK.
- the cap member of a ceramic material in particular an oxide ceramic, such as alumina, is formed. It is also possible to provide a nitride ceramic, in particular aluminum nitride, for the material of the cap element.
- the material may also be fused silica (quartz glass), synthetic fused silica, magnesium silicate (for example steatite, particularly low-loss C221 type), alkaline earth aluminum silicate (for example Celsian type C420), dense magnesia, zirconia, aluminum titanate, alumina (alumina), zirconium reinforced alumina and ceramic high temperature materials such as Macor ® be.
- the cap member may be tubular, in which case the tube form a corner-free cross-section and thus may be round or oval, or else have a polygonal cross-section.
- the cap element comprises an annular web in the region of the opening which is formed in the detection region of the IR sensor.
- the IR sensor can be held stable position in the cap member and mechanically fixed.
- a stable arrangement can thereby be made possible, and yet the detection is not impaired, since the detection range is not restricted thereby.
- the IR sensor is arranged on a circuit carrier and the cap member extends over the entire length of the IR sensor substantially up to this circuit carrier.
- the cap member substantially completely surrounds the IR sensor and associated optics, but without obscuring the detection region.
- Figure 1 is a schematic representation of an arrangement of a sensor device according to the invention on a hob.
- FIG. 2 is a perspective view of an embodiment of a sensor device according to the invention.
- Fig. 1 shows a schematic sectional view of a pot 1 as a preparation vessel.
- the pot 1 comprises an outer wall 2 and a bottom 3 which stands on a preparation zone 4 of a preparation trough 5 of a household appliance designed as an electric oven.
- the preparation zone 4 can in the embodiment of a Heating element 6, which is formed for example as BandMapleiter heated.
- the heating element 6 is supplied via a supply line 7 with power that can be controlled by an operator via an operating device, not shown.
- the preparation zone 4 is embodied in the exemplary embodiment as a glass-ceramic cooking surface and arranged in a hob 4 '.
- a device for controlling and / or regulating a heating power of the heating element 6 comprises a sensor device I, which is designed to determine a temperature in a preparation process of a good or a food 1 a according to a first preparation, a cooking.
- the sensor device I is thus designed as a cooking sensor.
- the sensor device I is arranged fixedly positioned on the hob 4 '.
- the sensor device I comprises an IR sensor 9, wherein the sensor device I and in particular the IR sensor 9 is positioned laterally and at a distance from the preparation zone 4 on the hob 4 '.
- the sensor device I is further positioned at a distance from the pot 1.
- the IR sensor 9 is for detecting heat radiation, which is radiated from the outer wall 2 of the pot 1 is formed.
- the IR sensor 9 comprises a detection area 91.
- the IR sensor 9 is arranged in a housing 8 and mounted on a circuit carrier 10.
- a signal connection 1 1 is provided, with which the sensor device I and in particular the IR sensor 9 is electrically connected to a control and / or regulating unit 12.
- Components for setting the IR sensor 9 and / or an evaluation unit for evaluating the measured values acquired by the IR sensor 9 can be mounted on the circuit carrier 10.
- the signal connection 1 1 may be wired, but also wireless. In a wireless implementation, a radio connection can be realized.
- the arrangement comprises a further sensor 13, which is designed to detect the temperature of the preparation zone 4 and arranged on a lower side 41 of the preparation zone 4 and via a signal connection 14 with the control and / or control unit 12 is electrically connected.
- the signal connection 14 can be performed both wirelessly and by wire.
- a frying sensor system can be formed in the arrangement by sensors 13 and the sensors on the bottom 3.
- a sensor device I in a simplified representation.
- the illustrated module shows the housing 8 in which the IR sensor 9 is arranged and extends at least partially out of the housing 8.
- the illustration is merely exemplary and the IR sensor 9 may also extend less or farther out of the housing 8 and, moreover, be arranged at a different location in the housing 8 and thus protrude from the housing 8 at another location.
- the shape of the housing 8 is merely exemplary and can be carried out in saumer- tiger way.
- the IR sensor 9 is mounted on a circuit carrier 10, which is arranged within the housing 8.
- the IR sensor 9 comprises the cap member 92, which is tubular in the exemplary embodiment. As can be seen, this cap member 92 surrounds the IR sensor 9 over its entire length, which is given by the illustrated lengths d1 and d2. By the length d1 while the portion 92a of the cap member 92 is characterized, which protrudes from the housing 8 and thus freely accessible and thus can be touched. A portion 92b of the cap member 92 has an extension in the longitudinal direction A of the IR sensor 9, which corresponds to the length d2, and which is disposed within the housing 8.
- the hollow-cylindrical cap element 92 has an opening 92d in the region of a detection region 91 of the IR sensor 9, as a result of which the IR sensor 9 is not covered by the cap element 92 in this detection region 91.
- the cap member 92 comprises a completely circumferential annular web 92 c, which is formed on the front side of the cap member 92 and thus virtually represents a collapse of the cap member 92 in a plane perpendicular to the longitudinal axis A of the IR sensor 9. By this web 92c, a mechanically stable positioning of the IR sensor 9 can be ensured and this are kept stable in the cap member 92.
- the cap member 92 is not grounded and formed in the embodiment of an electrically insulating material having a high thermal conductivity.
- the material of the cap member 92 is in the exemplary embodiment alumina (Al 2 O 3 ).
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112007001267.6T DE112007001267B4 (de) | 2006-05-24 | 2007-05-14 | Sensorvorrichtung mit zumindest einem IR-Sensor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200610024438 DE102006024438A1 (de) | 2006-05-24 | 2006-05-24 | Sensorvorrichtung mit zumindest einem IR-Sensor |
DE102006024438.9 | 2006-05-24 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2007135004A2 true WO2007135004A2 (de) | 2007-11-29 |
WO2007135004A3 WO2007135004A3 (de) | 2008-01-24 |
Family
ID=38622188
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2007/054624 WO2007135004A2 (de) | 2006-05-24 | 2007-05-14 | Sensorvorrichtung mit zumindest einem ir-sensor |
Country Status (2)
Country | Link |
---|---|
DE (2) | DE102006024438A1 (de) |
WO (1) | WO2007135004A2 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014117443A1 (de) * | 2014-11-27 | 2016-06-02 | Lechmetall Gmbh | Sensor für ein Gargerät, Gargerät mit einem solchen Sensor sowie Verfahren zur Bestimmung der Feuchtigkeit in einer Garraumatmosphäre eines Gargeräts |
DE202016006242U1 (de) | 2016-05-06 | 2016-12-02 | Moser Systeme Gmbh | Berührungslose Temperaturmessung an Kochfeldern |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19537909A1 (de) * | 1995-10-11 | 1997-04-17 | Bosch Siemens Hausgeraete | Sensorgesteuerte Garungseinheit |
DE19960495C1 (de) * | 1999-12-15 | 2001-09-20 | Bsh Bosch Siemens Hausgeraete | Kochfeld mit Sensoreinheit |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2335541A (en) * | 1998-03-20 | 1999-09-22 | Ceramaspeed Ltd | Electric heater comprising a temperature sensing and limiting arrangement |
DE10113230B4 (de) * | 2001-03-19 | 2010-08-26 | BSH Bosch und Siemens Hausgeräte GmbH | Sensoreinheit zur Erfassung von Wärmestrahlung |
DE10242099B4 (de) * | 2002-09-11 | 2004-08-12 | Schott Glas | Kochfeld |
GB2414559B (en) * | 2004-05-26 | 2007-08-08 | Ceramaspeed Ltd | Temperature sensor assembly |
-
2006
- 2006-05-24 DE DE200610024438 patent/DE102006024438A1/de not_active Withdrawn
-
2007
- 2007-05-14 DE DE112007001267.6T patent/DE112007001267B4/de not_active Expired - Fee Related
- 2007-05-14 WO PCT/EP2007/054624 patent/WO2007135004A2/de active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19537909A1 (de) * | 1995-10-11 | 1997-04-17 | Bosch Siemens Hausgeraete | Sensorgesteuerte Garungseinheit |
DE19960495C1 (de) * | 1999-12-15 | 2001-09-20 | Bsh Bosch Siemens Hausgeraete | Kochfeld mit Sensoreinheit |
Also Published As
Publication number | Publication date |
---|---|
WO2007135004A3 (de) | 2008-01-24 |
DE112007001267B4 (de) | 2014-01-23 |
DE112007001267A5 (de) | 2010-12-16 |
DE102006024438A1 (de) | 2007-11-29 |
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