EP4285055A1 - Haushalts-gargerät mit motorisch längsverschieblichem sensor - Google Patents
Haushalts-gargerät mit motorisch längsverschieblichem sensorInfo
- Publication number
- EP4285055A1 EP4285055A1 EP22700618.6A EP22700618A EP4285055A1 EP 4285055 A1 EP4285055 A1 EP 4285055A1 EP 22700618 A EP22700618 A EP 22700618A EP 4285055 A1 EP4285055 A1 EP 4285055A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sensor
- cooking chamber
- cooking
- closure element
- guide sleeve
- 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
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
- F24C7/085—Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination on baking ovens
-
- 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
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
- H05B6/6447—Method of operation or details of the microwave heating apparatus related to the use of detectors or sensors
- H05B6/645—Method of operation or details of the microwave heating apparatus related to the use of detectors or sensors using temperature sensors
- H05B6/6455—Method of operation or details of the microwave heating apparatus related to the use of detectors or sensors using temperature sensors the sensors being infrared detectors
Definitions
- the invention relates to a household cooking appliance, having a cooking space delimited by a cooking space wall, with a motor-driven longitudinally displaceable sensor being present, which can be moved from a rest position further away from the cooking space to a measuring position closer to the cooking space, and vice versa.
- the invention also relates to a corresponding method.
- the invention is particularly advantageously applicable to cooking appliances with a microwave function, e.g. stand-alone microwave appliances or ovens with a microwave function.
- WO 2015/141207 A1 discloses a heating cooker equipped with: an infrared sensor that is provided on the outside of a heating chamber and that uses a plurality of infrared detection elements to detect the temperature of an object to be heated; and a direction adjustment motor that can change the direction of the infrared sensor.
- the heating cooker is configured such that the direction of the infrared sensor moves to a temperature detection position when detecting temperature, and the direction of the infrared sensor moves to a standby position when temperature detection is not performed.
- US 7 696 454 B2 discloses a cooking device having a device body with a burner that heats an object.
- a first image capturing device may be provided on a side of the apparatus body, wherein the first image capturing device may be configured to capture image information corresponding to a heat source generated by the burner.
- a display can be provided on a side of the device housing in order to display the image information captured by the first image capturing device.
- EP 0 924 964 A2 discloses a microwave oven. This has an infrared sensor for detecting the temperature of food during cooking. The sensor is slanted downwards and backwards from the upper front edge of the cooking compartment. directs. A shutter protects the sensor when not needed to detect food temperature.
- DE 10 2017 220 889 A1 discloses an oven, in particular a pyrolysis oven, having an oven that delimits a cooking chamber, an opening leading through the oven, a sensor device with at least one sensor element that is arranged on the side of the oven that faces away from the cooking chamber and directed through the opening into the oven, and a protective device with at least one additional sensor, the protective device being set up to detect a critical thermal state of the sensor device by means of the at least one additional sensor and at least one protective measure being able to be triggered upon detection of the critical thermal state , Which is suitable for reducing a thermal load on the at least one sensor element of the sensor device.
- DE 10 2017 220 886 A1 discloses a baking oven, having an oven that encloses a cooking space, an outer housing, a sensor device directed into the cooking space, which is arranged in an interior space between the oven and the outer housing, and at least one sensor fan for ventilating the sensor device with cooling air, wherein the sensor device has a tubular sensor housing open at the end, in which at least one sensor element is accommodated and whose front end is directed in the direction of the cooking chamber, the sensor device has at least one viewing pane arranged between the sensor element and the cooking chamber, a rear The front side of the sensor housing serves as an air inlet opening for cooling air, a pressure side of the sensor fan is connected to the rear front side, the sensor housing has a lateral air outlet opening for the cooling air and a suction side of the sensor fan is connected to a space that is separated from the space of the Sensor device is separated.
- the oven is in particular an oven capable of pyrolysis.
- WO 2019/208527 A1 discloses a heating cooking apparatus equipped with: a heating chamber in which an object to be heated is accommodated; a panel opening which is an opening provided in a wall of the heating chamber; a support frame provided on the outside of the heating chamber to cover the panel opening; and a camera provided on the support frame such that an imaging surface is exposed through the panel opening to the inside of the heating chamber is oriented towards.
- the heating cooking device is equipped with: a shutter that can open/close to block or open the imaging surface of the camera and that is provided between the wall surface opening and the camera; and a fan that blows an air stream toward the camera and the shutter.
- the support frame has an air duct to suck the air flow blown out by the fan and discharge it toward the heating chamber through the panel opening that has been led to the surface.
- a household cooking appliance having a cooking chamber delimited by a cooking chamber wall, with a sleeve ("guide sleeve") with a front opening opening into the cooking chamber or directed in the direction of the cooking chamber "on the cooking chamber side” being present on the cooking chamber wall
- at least one sensor is accommodated in the guide sleeve so that it can be moved longitudinally by a motor and the front opening on the cooking chamber side can be closed by means of a closure element which can be moved by a motor together with the at least one sensor, whereby when the at least one sensor is in a rest position which is further away from the front opening on the cooking chamber side, the closure element closes the front opening on the cooking chamber side, and when the at least one sensor is in a measuring position that is closer to the front opening on the cooking chamber side, the closure element releases the front opening on the cooking chamber side for the at least one sensor.
- This cooking appliance offers the advantage of a particularly robust option that can be implemented easily and cost-effectively, to selectively expose a sensor to a cooking chamber or a cooking chamber atmosphere and to at least thermally protect it from the cooking chamber.
- the sensor and the closure element can be moved between the rest position and the measuring position or the closed position and the open position with only one common drive.
- the guide sleeve By using the guide sleeve, the further advantage is achieved that it requires little space outside the installation space.
- the senor can be temporarily placed in its measuring position without having to remain in this position permanently and be exposed to aggressive cooking chamber conditions such as high temperatures, an aggressive atmosphere, etc.
- sensors can also be used which, although they can measure briefly in the measuring position (active position) without damage, but would not permanently withstand the cooking chamber conditions prevailing there.
- the household cooking appliance can be, for example, an oven, a microwave oven, a steamer or any combination thereof, for example an oven with a microwave and/or steamer function.
- the cooking space wall can also be referred to as a muffle or baking tube, particularly in the case of a baking oven.
- a sleeve can be understood in particular as a tubular or hollow-cylindrical receptacle or housing for the sensor.
- the sleeve is in particular straight (linear longitudinal axis), but can also be curved, for example (curved longitudinal axis).
- the sleeve can, for example, have a circular, oval, angular or free-form cross section.
- the guide sleeve has a diameter of between 10 mm and 20 mm, in particular between 11 mm and 20 mm, in particular between 15 mm and 17 mm, very particularly around 16 mm.
- a sensor e.g. IR sensor, can have a typical diameter of about 10 mm.
- the guide sleeve is present on the cooking chamber wall can include, in a further development, that the guide sleeve is a part made separately from the cooking chamber wall. Asked component is inserted into a suitable opening in the cooking chamber wall.
- the guide sleeve can end with the cooking chamber wall, in which case in particular the front opening of the guide sleeve on the cooking chamber side can end flush with the cooking chamber wall.
- the guide sleeve can protrude through the cooking chamber wall into the cooking chamber.
- One advantage of this configuration is that the guide sleeve and the sensor can be married to one another separately outside of the cooking chamber in a particularly simple manner.
- the guide sleeve is present on the cooking chamber wall can include, in a development, that it is designed as an outwardly directed protuberance of the cooking chamber wall, ie it represents a region of the cooking chamber wall.
- One advantage of this development is that it means that the guide sleeve does not have to be manufactured and attached separately to the cooking chamber wall.
- the sensor is accommodated in the guide sleeve in a motor-driven, longitudinally displaceable manner includes, in particular, that the sensor can be moved by means of a motor along a longitudinal extension of the guide sleeve or in the longitudinal direction of the guide sleeve. In its measuring position, the sensor can still be arranged inside the guide sleeve (typically near the front opening of the guide sleeve on the cooking chamber side), be flush with the front opening on the cooking chamber side or even protrude through the front opening on the cooking chamber side into the cooking chamber.
- closure element can be moved by motor together with the sensor includes, in particular, that the movement of the closure element takes place together with the movement of the sensor.
- the closure element and the sensor can be moved by the same motor.
- the motor can be an electric motor, for example.
- the closure element is in particular between a closed position, in which it closes the front opening on the cooking chamber side, in particular sits on it, and an open position, in which it moves away from the front opening on the cooking chamber side of the guide sleeve is lifted, movable.
- the movements of the sensor and the closure element are coordinated in such a way that when the sensor is in its rest position, the closure element is in its closed position, and when the sensor is in its measuring position, the closure element is in its open position is located.
- the closure element can, for example, be disc-shaped.
- closure element “releases” the front opening on the cooking chamber side “for the sensor” includes, in particular, that the sensor is enabled or enabled to take measurements of the cooking chamber and/or the contents of a cooking chamber when the front opening is clear.
- the sensor can therefore also be referred to as a "cooking chamber sensor".
- the at least one sensor comprises at least one infrared (IR) sensor, in particular at least one IR sensor (MIR sensor) measuring in the mid-infrared range (at typical wavelengths between, for example, 3 pm and 50 pm).
- IR infrared
- MIR sensor IR sensor measuring in the mid-infrared range (at typical wavelengths between, for example, 3 pm and 50 pm).
- the at least one IR sensor can then, for example, record thermal images of the cooking chamber and its contents, in a further development in the case of several IR sensors in different spectral ranges.
- the at least one IR sensor can be an IR camera sensor for this purpose, which in particular generates thermal images constructed in the form of pixels.
- the use of such an openable closure element is particularly advantageous for IR sensors because alternatively usable IR-permeable protective lenses are very expensive and susceptible to dirt.
- the at least one sensor comprises at least one sensor (“camera sensor”) that is sensitive in the visible spectral range. Similar to the IR sensor, the opened closure element releases a field of view of the at least one camera sensor for recording images from the cooking chamber.
- the at least one sensor includes at least one ultrasonic sensor.
- the at least one sensor comprises at least one sensor that is set up to determine a property of the atmosphere to be measured (“atmosphere sensor”), e.g. an oxygen sensor, a humidity sensor, a sensor for detecting certain chemical Substances, etc.
- atmosphere sensors must come into contact with the medium to be measured (the atmosphere in the cooking chamber), but they do not use a field of view. Rather, in this case it is sufficient for the open closure element to be lifted so far from the front opening on the cooking chamber side that the sensor is exposed to the cooking chamber atmosphere to a practically sufficient degree.
- another sleeve (“sensor sleeve”) is accommodated in the guide sleeve so that it can be moved longitudinally by a motor, the at least one sensor is attached to a front side of the sensor sleeve on the cooking chamber side, and the sensor sleeve is connected to the closure element via a mechanical connecting means, in particular a linkage .
- This configuration has the advantage that the sensor sleeve and thus the at least one sensor can be guided through the guide sleeve in a particularly simple and reliable manner.
- the guide sleeve and the sensor sleeve are longitudinally displaceable relative to one another.
- a further advantage of the sensor sleeve is that a sensor can be attached to it easily and securely, in particular can be inserted into the end face on the cooking chamber side. Another advantage is that electrical lines of the sensor can be easily routed through the sensor sleeve.
- the sleeve is designed as a toothed rack, which is engaged by a gear wheel that can be driven by a motor.
- a simple, precise and robust possibility for motorized longitudinal displacement of the sensor sleeve is advantageously se provided in the guide sleeve.
- an outside of the sensor sleeve can be formed with a row of teeth, for example.
- the sleeve can protrude permanently (ie also in the measuring position) from a rear end face of the guide sleeve in order to easily ensure permanent engagement of the gearwheel in the toothed rack.
- the guide sleeve can have an opening through which the gear wheel can engage in the toothing of the sensor sleeve.
- the sensor sleeve can be made significantly shorter than if it also had to protrude from the side of the guide sleeve facing away from the cooking space in the measuring position.
- the drive unit then does not have to be arranged at one end of the guide sleeve, but can also be arranged next to the guide sleeve in a space-saving manner.
- the sensor sleeve can have an external thread, so that the inner sensor sleeve can be linearly displaced by rotating a motor-driven threaded nut that engages in the external thread.
- the drive (motor) can be arranged on the end region of the guide sleeve facing away from the cooking space. This can be the case, for example, with a direct drive of the sensor sleeve via a hollow motor shaft (with an internal spindle thread). More complicated, but basically possible, would be to drive the sensor sleeve via a threaded nut rotatably mounted on the end region of the guide sleeve facing away from the cooking chamber, which in turn is driven by a motor pinion, e.g. via an outer ring gear.
- the closure element is a pivotable closure flap.
- a pivot axis of the closure flap can be formed, for example, with the guide sleeve or with the cooking chamber.
- a transfer of the movement of the sensor is particularly easy to implement if the closure flap is connected to the sensor sleeve via a pivotable rod. If the sensor sleeve is moved from the rest position to the measuring position, it presses over the rod open the locking flap. If, conversely, the sensor sleeve is moved from the measuring position to the rest position, it pulls the closing flap back from its open position into the closed position.
- the closure element is firmly connected to the sensor, in particular the sensor sleeve, and can be moved or is moved analogously to the sensor or the sensor sleeve.
- This development is particularly advantageous in the case of non-imaging or imaging sensors such as moisture sensors etc. and can be implemented in a particularly simple and robust manner.
- the closure element can be spaced apart from the front side of the sensor sleeve on the cooking chamber side, e.g. via one or more rods or pins. If the sensor moves from the rest position into its measuring position, the closure element is moved analogously by the mouth opening on the cooking chamber side (in particular linearly) and is thus lifted until an open position located in front of the mouth opening on the cooking chamber side is reached.
- closure element when the sensor is moved back from the measuring position to its rest position, the closure element is placed back onto the mouth opening on the cooking chamber side by means of a corresponding (in particular linear) movement.
- a closure element can also be referred to as a closure cover. In particular, it can be designed in the form of a disk.
- the closure element consists at least partially of a poorly heat-conducting material. This achieves the advantage that when the sensor is in its rest position and the closure element then also closes the guide tube against the cooking chamber, a thermal load on the interior of the guide sleeve in which the sensor is located can be reduced.
- the closure element can consist, for example, at least partially of plastic.
- the household cooking appliance has a microwave function and the closure element is designed to be microwave-tight in its overlapping area with the front opening of the guide sleeve on the cooking chamber side. This prevents leakage of microwave radiation from the cooking chamber through the front opening on the cooking chamber side into the guide sleeve. This in turn reduces the load on the sensor and can also prevent or prevent microwave radiation from escaping from the cooking chamber reduce.
- the closure element can be made of metal, for example.
- the closure element consists partially of a poorly heat-conducting material and is designed to be microwave-tight in its overlapping area with the front opening of the guide sleeve on the cooking chamber side.
- the closure element can, for example, be made of metal on one side - e.g. (in the closed position) the side facing the cooking chamber - and on its other side - e.g. (in the closed position) the side facing the guide sleeve - be made of plastic.
- the metallic side can be formed, for example, by a metallic coating of a plastic base body.
- the closure element can have a sandwich structure made of a metallic layer and a non-metallic layer with good thermal insulation.
- the household cooking appliance has a microwave function
- the guide sleeve is designed to be electrically conductive on the casing side and is electrically connected to the cooking chamber wall. This advantageously also achieves microwave tightness of the guide sleeve itself, because the metallic tube (guide sleeve) formed with it achieves a so-called cut-off effect of a thin tube cross-section and as a result no microwave leakage radiation is discharged through the guide sleeve. This applies in particular if the (inner) diameter of the guide sleeve is less than 25 mm.
- the guide sleeve in particular its lateral surface, can have holes or recesses in order to advantageously allow an air flow through the guide sleeve, e.g. to cool the at least one sensor.
- a usually built-in device cooling fan or a dedicated fan can be used to generate the cooling air flow. If the household cooking appliance has a microwave function, it is particularly advantageous if the holes are so small that they do not affect microwave resistance.
- the closure element in the rest position, sits airtight on the front opening of the guide sleeve on the cooking chamber side.
- This can advantageously wise a particularly effective seal against steam can be achieved in general to prevent air flow from the cooking chamber into the guide sleeve even when the closure element is closed.
- This in turn helps protect the at least one sensor from thermal and chemical stress in its rest position.
- This configuration can be implemented, for example, in that the flap and/or the guide sleeve has or have a sealing ring or is or are provided with a sealing material in the contact area.
- the at least one sensor has at least one IR sensor and an inner surface of the closure element has an emissivity of almost 1 in the IR spectral range of the sensor, at least in its overlapping area with the guide sleeve.
- This can also be expressed in such a way that the closure element (in the closed position) is designed as an almost ideal black radiator on its side facing the interior of the guide sleeve, the emissivity of which is consequently approximately 1.
- An IR sensor looks at this coverage area at least partially in its rest position.
- This configuration has the advantage that the IR sensor can be calibrated when the temperature of the cooking chamber is known, since it is assumed that the temperature at the overlapping area corresponds to the temperature of the cooking chamber and the IR sensor thus corresponds to the wavelength of the IR measured at the overlapping area -Light can correlate or calibrate with the cooking chamber temperature.
- the cavity temperature may be sensed by a dedicated cavity temperature sensor, such as a thermocouple or other probe.
- the object is also achieved by a method for operating a household cooking appliance as described above.
- the method can be designed analogously to the household appliance and vice versa, and has the same advantages.
- a method for operating a household cooking appliance having a cooking chamber delimited by a cooking chamber wall, with a guide sleeve having a front opening on the cooking chamber side opening out into the cooking chamber being present on the cooking chamber wall, a sensor being accommodated in the guide sleeve in a motor-driven, longitudinally displaceable manner and the front opening on the cooking chamber side can be closed by means of a closure element, which can be moved by a motor together with the sensor, wherein in which Method by actuating a drive motor, the sensor is optionally moved from a rest position further away from the front opening on the cooking chamber side to a measuring position closer to the front opening on the cooking chamber side and the closure element is moved from its closed position closing the front opening on the cooking chamber side to its open position releasing the front opening on the cooking chamber side for the sensor , or the other way around.
- the at least one sensor is moved into its measuring position during a treatment process or sequence of the household appliance, such as a cooking sequence, in order to take measurements from the cooking chamber (images, thermal images, ultrasonic measurement, moisture measurement, etc.).
- the at least one sensor is moved into its measuring position in order to take measurements from the cooking chamber and is moved back into the rest position after a measurement or measurement phase ("intermittent measurement"). This can be advantageous for protecting the at least one sensor in particular when continuous measurement is not necessary.
- the at least one sensor is moved into its measuring position in order to take measurements from the cooking chamber and is only then moved back into its rest position when at least one predetermined criterion that indicates that the sensor is dirty and/or could be damaged is fulfilled.
- the at least one sensor can be moved back into its rest position when the cooking chamber temperature reaches or exceeds a specific threshold value.
- the senor is an IR sensor
- an inner surface of the closure element has an emissivity of almost 1 in the spectral range of the sensor, at least in its overlapping area with an interior of the guide sleeve, and a cooking chamber temperature of the cooking chamber is sensed using a temperature sensor, wherein in the method the sensor is calibrated by comparing the thermal radiation sensed on the inner surface of the closure element and the cooking chamber temperature sensed by means of the temperature sensor.
- the typically homogeneous temperature distribution in the cooking chamber of the switched-off cooking appliance can be used in a cooking appliance to calibrate the IR sensor, since in this state the cooking chamber temperature measured by the temperature sensor of the cooking appliance correlates very well with the temperature of adjacent components and thus the temperature of the closure element matches.
- calibration at higher temperatures is also possible, in particular if it is known, for example from an allocation table, how the cooking chamber temperature and the temperature of the closure element relate to one another.
- FIG. 1 shows a sectional side view of components of a domestic cooking appliance with the sensor in its measuring position
- FIG. 2 shows the components of the domestic cooking appliance from FIG. 1 with the sensor in its rest position as a sectional representation in a side view
- a muffle 2 which also serves as a cooking chamber wall 3 of a cooking chamber 4 .
- a dome 5 for receiving a rotating antenna (not shown) is drawn in, in particular in the center, via which microwaves can be fed into the cooking chamber 4.
- the dome 5 is separated from the actual cooking chamber 4 by a cover 6 permeable to microwaves.
- a guide sleeve 8 in the form of a straight, circular-cylindrical tube is arranged on the ceiling 3a. At its end opening 9 on the cooking chamber side, which opens into the cooking chamber 4 , this has a flange-like bent edge 10 .
- the guide sleeve 8 is here a separately manufactured component that coming from the cooking chamber 4 by a Breakthrough or hole in the ceiling 3a has been carried out, that the edge 10 rests on the inside of the ceiling 3a and has been fixed there in an airtight manner, for example by laser welding.
- the edge 10 is formed at an angle to a longitudinal axis of the guide sleeve 8, so that the mounted guide sleeve 8 is at an angle. This improves the view into the cooking chamber 4 when the guide sleeve 8 is arranged off-centre.
- the guide sleeve 8 is made of metal, it is electrically connected to the cooking chamber wall 8, which is also made of metal.
- the diameter of the guide sleeve 8 is about 16 mm here and is therefore impermeable to microwaves with frequency ranges around 915 MHz or 2.45 GHz, which are typical for household microwave devices, in the case of a metallic or metal-coated design.
- the guide sleeve 8 can have small holes or recesses which, in particular, do not affect microwave resistance. This allows better cooling of the at least one sensor 14 to be achieved, since the cooling air flow of a device cooling fan that is usually installed (not shown) can also be used to generate an air flow through the guide sleeve 8 .
- a sensor sleeve 11 is housed in the guide sleeve 8 so that it can be moved longitudinally by a motor. This is achieved in that an outside of the sensor sleeve 11 is formed with a row of teeth 12 extending in the longitudinal direction and the guide sleeve 8 has a recess 20 in its lateral surface or side wall, through which the row of teeth 12 is exposed.
- the domestic cooking appliance 1 also has an electric motor 21 on the drive shaft of which a gear wheel 22 is fitted, the ring gear of which in turn engages through the cutout 20 into the row of teeth 12 .
- the sensor sleeve 11 By actuating the electric motor 21 and corresponding rotation of the gear wheel 22, the sensor sleeve 11 can be moved, as indicated by the double arrow P1, between two end positions, namely between the measuring position shown and a rest position explained in more detail below and shown in FIG.
- the IR sensor 14 On the front side 13 of the sensor sleeve 11 on the cooking chamber side, there is a sensor, here for example an IR sensor 14 , which in the variant shown ends flush with the front side 13 on the cooking chamber side.
- the IR sensor 14 is also housed in the guide sleeve 8 so that it can be moved longitudinally by a motor. As shown for the measuring position, it can be or will be moved out of the guide sleeve 8 outside of the rest position.
- the IR sensor can, for example, have a diameter of approximately 10 mm, which then also corresponds to the inside diameter of the tubular sensor sleeve 11
- a rod 15 is rotatably connected to the sensor sleeve 11 and projects beyond the sensor sleeve 11 on the cooking chamber side.
- the rod 15 is connected to a closure flap 17 pivotably attached to the edge 10 via a hinge 16, as a result of which the possibility of movement of the closure flap 17 arises, as indicated by the double arrow P2.
- the other end area of the rod 15 is rotatably connected to a projection 19 standing up in an overlapping area 18 of the closing flap 17 .
- the closure flap 17 with the rod 15 is pivoted so far away from the end face 13 of the sensor sleeve 11 that the front opening on the cooking chamber side is cleared for the IR sensor 14 and the closure flap 17 is no longer in the field of view F of the IR sensor 14 is located.
- the IR sensor 14 can therefore record a thermal image of the cooking chamber 4 undisturbed by the closing flap 17 .
- the IR sensor 14 is also moved into the guide sleeve 8 until it reaches a rest position further away from the cooking chamber 4 .
- the IR sensor 14 and the closing flap 17 can therefore be moved together by the electric motor.
- the sleeve 11 can be moved between the operating position and the rest position. It is a further development that the sensor sleeve 11 can also be moved to intermediate positions in a targeted manner.
- the closure flap 17 is pivoted about the hinge 16 in the direction of the front opening 9 on the cooking chamber side.
- This closing movement can be continued until the IR sensor 14 is in its rest position, in which case the closing flap 17 is in its closed position, in which it covers the front opening 9 on the cooking chamber side.
- the covering area 18 then points into the guide sleeve 8 .
- the projection 19 is also housed in the guide sleeve 8 .
- the closure flap 17 or the edge 10 can be designed to be sealing, for example by providing a sealing ring (not shown) or a sealing coating. In this way, the entry of air into the guide sleeve 8 can be avoided in a particularly reliable manner in the rest position.
- Closing flap 17 can, in particular, be disc-shaped and, for example, be metallic (e.g. covered or coated) on its side ("outside") pointing into the cooking chamber 4 in the rest position and on its inside pointing into the guide sleeve 8 in the rest position, which Corresponds to cover area 18, consist of a poorly heat-conducting material, e.g. of plastic, ceramic, micanite, or the like.
- cover area 18 consist of a poorly heat-conducting material, e.g. of plastic, ceramic, micanite, or the like.
- the entry of microwaves into the guide sleeve 8 can also be particularly effectively prevented by the metallic layer.
- the covering area 18 can have a surface with an emissivity close to 1.
- the coverage area 18, which is in the field of view of the IR sensor 14 in the rest position, can be used to calibrate the IR sensor 14 in its rest position.
- the household cooking appliance 1 can be operated, for example, as follows:
- thermal images of the cooking chamber 4 and thus also of the food to be cooked in the cooking chamber 4 are recorded practically continuously or at short time intervals.
- the electric motor is actuated in such a way that the sensor sleeve 11 is moved forwards from the retracted rest position in the direction of the cooking chamber 4 and, in the process, pushes open the closing flap 17, which was previously in its closed position, via the rod 15 so that it is released from the Front opening 9 on the cooking chamber side stands out.
- the sensor sleeve 11 is moved until the measuring position shown in FIG. 1 is reached.
- the thermal images are recorded by the IR sensor 14 in the measurement position.
- the sensor sleeve 11 is moved back into the guide sleeve 8 in the reverse direction, in particular if (a) the IR sensor 14 is no longer required, e.g. because the cooking process has ended, and/or (b) the IR sensor 14 could be damaged , Eg because the cooking chamber temperature a predetermined threshold reached or exceeded.
- the IR sensor 14 In the rest position, the IR sensor 14 is protected from the cooking chamber 4 by the closure flap 17, namely from microwaves, thermal radiation and a cooking chamber atmosphere.
- the IR sensor 14 is comparatively far away from the cooking chamber 4 in the rest position, so that its thermal load also decreases as a result.
- thermal images are recorded at longer time intervals.
- the IR sensor 14 only needs to be brought from the rest position into its measuring position for a respective recording and is brought back into its rest position after the recording.
- a numerical specification can also include exactly the specified number as well as a usual tolerance range, as long as this is not explicitly excluded.
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- General Engineering & Computer Science (AREA)
- Electric Ovens (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP24164841.9A EP4380313A3 (de) | 2021-01-26 | 2022-01-13 | Haushalts-gargerät mit motorisch längsverschieblichem sensor |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021200669.8A DE102021200669A1 (de) | 2021-01-26 | 2021-01-26 | Haushalts-Gargerät mit motorisch längsverschieblichem Sensor |
| PCT/EP2022/050621 WO2022161777A1 (de) | 2021-01-26 | 2022-01-13 | Haushalts-gargerät mit motorisch längsverschieblichem sensor |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP24164841.9A Division-Into EP4380313A3 (de) | 2021-01-26 | 2022-01-13 | Haushalts-gargerät mit motorisch längsverschieblichem sensor |
| EP24164841.9A Division EP4380313A3 (de) | 2021-01-26 | 2022-01-13 | Haushalts-gargerät mit motorisch längsverschieblichem sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4285055A1 true EP4285055A1 (de) | 2023-12-06 |
| EP4285055B1 EP4285055B1 (de) | 2025-10-08 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22700618.6A Active EP4285055B1 (de) | 2021-01-26 | 2022-01-13 | Haushalts-gargerät mit motorisch längsverschieblichem ir-sensor |
| EP24164841.9A Pending EP4380313A3 (de) | 2021-01-26 | 2022-01-13 | Haushalts-gargerät mit motorisch längsverschieblichem sensor |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP24164841.9A Pending EP4380313A3 (de) | 2021-01-26 | 2022-01-13 | Haushalts-gargerät mit motorisch längsverschieblichem sensor |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20240040677A1 (de) |
| EP (2) | EP4285055B1 (de) |
| DE (1) | DE102021200669A1 (de) |
| WO (1) | WO2022161777A1 (de) |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990062452A (ko) | 1997-12-22 | 1999-07-26 | 윤종용 | 전자렌지 |
| KR100793794B1 (ko) | 2006-04-20 | 2008-01-11 | 엘지전자 주식회사 | 조리기기 |
| JP6446673B2 (ja) | 2014-03-18 | 2019-01-09 | パナソニックIpマネジメント株式会社 | 加熱調理器 |
| KR101645102B1 (ko) * | 2014-12-08 | 2016-08-02 | 엘지전자 주식회사 | 전자레인지 및 전자레인지의 제어 방법 |
| CN107616719A (zh) * | 2017-10-20 | 2018-01-23 | 深圳市北鼎科技有限公司 | 家用电烤箱摄像头结构和家用电烤箱 |
| DE102017220889A1 (de) | 2017-11-22 | 2019-05-23 | BSH Hausgeräte GmbH | Backofen mit Sensoreinrichtung |
| DE102017220886A1 (de) * | 2017-11-22 | 2019-05-23 | BSH Hausgeräte GmbH | Backofen mit Sensoreinrichtung und Lüfter |
| JP7108831B2 (ja) | 2018-04-27 | 2022-07-29 | パナソニックIpマネジメント株式会社 | 加熱調理器 |
| US20200154943A1 (en) * | 2018-11-16 | 2020-05-21 | GMG Products LLC | Imaging system for cooking device |
| US11994301B2 (en) * | 2019-04-05 | 2024-05-28 | BSH Hausgeräte GmbH | Household cooking appliance having a cooking chamber camera and method for operation |
| DE102019206892A1 (de) * | 2019-05-13 | 2020-11-19 | BSH Hausgeräte GmbH | Gargerät mit außerhalb des Garraums angeordneten Sensoreinheiten |
| WO2021002670A1 (en) * | 2019-07-02 | 2021-01-07 | Samsung Electronics Co., Ltd. | Heating cooker |
-
2021
- 2021-01-26 DE DE102021200669.8A patent/DE102021200669A1/de active Pending
-
2022
- 2022-01-13 EP EP22700618.6A patent/EP4285055B1/de active Active
- 2022-01-13 US US18/268,326 patent/US20240040677A1/en active Pending
- 2022-01-13 WO PCT/EP2022/050621 patent/WO2022161777A1/de not_active Ceased
- 2022-01-13 EP EP24164841.9A patent/EP4380313A3/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| US20240040677A1 (en) | 2024-02-01 |
| EP4285055B1 (de) | 2025-10-08 |
| DE102021200669A1 (de) | 2022-07-28 |
| EP4380313A2 (de) | 2024-06-05 |
| WO2022161777A1 (de) | 2022-08-04 |
| EP4380313A3 (de) | 2024-08-14 |
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