EP3714209A1 - Gargerät mit bildaufnahmeeinrichtung - Google Patents
Gargerät mit bildaufnahmeeinrichtungInfo
- Publication number
- EP3714209A1 EP3714209A1 EP18800899.9A EP18800899A EP3714209A1 EP 3714209 A1 EP3714209 A1 EP 3714209A1 EP 18800899 A EP18800899 A EP 18800899A EP 3714209 A1 EP3714209 A1 EP 3714209A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cooking
- cooking chamber
- lens
- light
- cooking appliance
- 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.)
- Pending
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
-
- 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
- H05B6/76—Prevention of microwave leakage, e.g. door sealings
Definitions
- the invention relates to a cooking device comprising a cooking chamber delimited by means of a cooking chamber wall and an image recording device for taking pictures of the cooking chamber, which image recording device is an optical sensor arranged outside the cooking chamber and directed into the cooking chamber through a light passage opening in the cooking chamber wall. and has a sensor optically upstream transmitted light optics.
- the invention is particularly advantageously applicable to cooking appliances with an oven functionality and possibly a microwave functionality.
- DE 10 2011 002 187 A1 discloses a relevant household appliance with a cooking chamber and a door closing the cooking chamber.
- the cooking chamber is associated with a camera which is suitable and designed to forward recorded images from the cooking chamber to a display device.
- a covering device preferably a glass pane and particularly preferably a quartz pane, can be provided, which is suitable and designed to cover the at least one camera against the cooking space.
- EP 0 899 512 A1 discloses a cooking appliance with a heatable cooking chamber for cooking a food and with an optical device for detecting the food and its imaging on a screen.
- the screen is an integral part of the cooking appliance.
- a wall of the cooking chamber can have an optical window for the optical device for detecting the cooking product.
- US 2017/0000292 A1 discloses a furnace with a monitoring unit which monitors a cooking chamber through a window of the oven door and transmits the data obtained by the monitoring via a network to an external device in order to enable a user to start the cooking process of the oven by means of the external device without directly monitoring the oven through a transparent section thereof to provide the user with increased convenience.
- WO 2009/138359 A2 discloses a household appliance with an image acquisition device, in particular with an internal image capture device, and a method for detecting an internal state or operating state of such a household appliance.
- WO 2012/146523 A1 is directed to a oven door and an oven.
- a camera is mounted inside the door and coupled to a heat sink that forms an outer cover of the door.
- a cooking appliance comprising a cooking chamber delimited by means of a cooking chamber wall and an image recording device for taking pictures of the cooking chamber or from the cooking chamber, which image recording device comprises an optical sensor arranged outside the cooking chamber and passing through a light passage opening in the cooking chamber wall into the cooking chamber is directed, and has a sensor optically upstream transmitted light optics, wherein the transmitted light optics has an aperture and the transmitted light optics has at least one lens which is arranged on a side facing the cooking chamber ("garraum devis") of the aperture opening.
- the advantage of using an aperture opening is that it is not imaged in recorded images.
- the aperture opening can be made comparatively small without influencing the field of view (the opening angle) of the optical sensor.
- a small aperture opening provides the further advantage that leakage of radiation exiting the cooking chamber through the aperture opening, such as heat radiation, microwave radiation, etc., can be kept low.
- a small aperture opening advantageously results in a high depth of field of the recorded image.
- the optical sensor in a particularly large distance be positioned by the cooking chamber, which allows a reduction in its thermal load, without reducing its field of view. In particular, tolerances and irregularities of the aperture opening are not depicted.
- a particularly inexpensive optical sensor in particular a camera sensor, with a small pixel size can be installed.
- the light entrance opening is optically arranged in front of the transmitted-light optics and thus serves as a visual field stop.
- the size of the light entry opening disadvantageously limits the image angle of the optical sensor and thus its field of view.
- the light entrance opening in the visual field diaphragm must be large and / or the optical sensor must be positioned close to the cooking chamber.
- a large light inlet opening in the cooking chamber wall causes a high temperature loss and prevents the use of ovens with microwaves function, since the microwave radiation can penetrate through the light inlet opening. If the optical sensor is positioned close to the cooking chamber, it is exposed to high temperature loads.
- the cooking appliance has an oven functionality, a microwave functionality, a steam treatment functionality, etc., or a combination thereof.
- the cooking appliance may be an oven or a stove, which may additionally have microwave functionality and / or steam treatment functionality.
- the cooking appliance may also be a self-contained microwave cooking appliance, steamer, etc.
- the cooking chamber can also be referred to as a food treatment room. If the cooking appliance has an oven functionality, the cooking space can also be used as the oven space and the Garraumwandung also be referred to as a muffle.
- the cooking chamber wall can have a typically front-side charging opening, which can be closed by means of a door.
- the door may have a viewing window.
- the aperture opening can basically also be located in an area of the door which is otherwise not transparent.
- the cooking appliance is in particular an electrically operated household appliance, in particular a kitchen appliance.
- the optical sensor can be a camera which is sensitive in the visible spectral range and / or for infrared radiation.
- the fact that the optical sensor is directed through the aperture opening into the cooking chamber includes that light emerging from the cooking chamber through the aperture opening (visible light and / or IR light) strikes the optical sensor at least partially.
- the optical sensor may be a digital camera or an image capture chip of a digital camera.
- a transmitted-light optical system may, in particular, be understood to mean an optical system which has at least one beam-forming optical (transmitted-light) element (also referred to as "lens") which has been traversed by the light falling into the sensor. This does not exclude that at least one further optical element of the transmitted-light optical system is not a beam-forming transmitted-light element.
- at least one further optical element may be a mirror, a diaphragm, a filter, etc.
- the transmission optics can also be referred to as a lens or objective optics.
- the transmitted-light optical system has a plurality of optical elements, in particular a plurality of lenses.
- An aperture opening is understood in particular to mean an opening which is located outside or away from an image plane, an object plane and an intermediate image plane of the transmitted-light optics or the image recording device.
- the aperture opening corresponds to the light passage opening. This has the advantage that the light passage opening in the cooking chamber wall can be kept particularly small, which particularly effectively reduces a radiation load (in particular heat load) of the optical sensor or other components arranged outside the cooking chamber.
- the cooking chamber wall, in which an aperture opening is introduced, then serves as an associated aperture diaphragm.
- the aperture opening is arranged on a side of the light passage opening facing away from the cooking chamber.
- the light transmission opening can serve as a visual field diaphragm, but whose size can be kept smaller in comparison to image recording devices without aperture opening.
- This refinement has the advantage that it is easier to receive or fix at least one optical element of the transmitted-light optical unit at the light passage opening.
- Aperture aperture or the aperture is a variable with respect to their surface aperture opening.
- the aperture diaphragm may be formed as an iris opening. This advantageously allows adaptation of the amount of incident light and the depth of field, e.g. on a user request.
- the aperture opening can then be adjustable on the user side, alternatively or additionally automatically by the cooking appliance.
- the transmitted-light optical system additionally has at least one lens arranged away from the garage space (in particular outside the cooking chamber). This allows a multi-shaped configuration of the light path of the transmitted-light optical system, in particular a greater distance of the optical sensor of the cooking chamber wall. In turn, a thermal load of the optical sensor can be further reduced.
- the aperture opening is located in this embodiment. tion in the beam path between the at least one garraum disorderen lens and the at least one located outside the cooking cavity lens.
- At least one lens arranged on the side of the garnish is a diverging lens and at least one lens arranged away from the garraum facing the aperture opening is a converging lens.
- the retro-focus construction is basically known and designates a special construction of lenses with short focal length.
- the retro-focus construction allows to enlarge a cut width of the transmitted-light optics without changing a focal length.
- At least one diverging lens and at least one converging lens forming a wide-angle retrofocus optic. This gives the advantage that the optical sensor very far away from the cooking chamber wall
- the layers of a sensor plane in which the or the photosensitive (s) sensor element (s) of the optical sensor is or are located
- a lens (main) plane of a lens arranged garraumraum and a Schr- level ( Focus plane) coincide in a line and the sharpness level corresponds to at least approximately one insertion level of the cooking chamber.
- the insertion plane can be imaged sharply over its entire surface even if there is no linear radiation path.
- This refinement can also be expressed in such a way that the sensor plane, the objective plane and at least one insertion plane fulfill the Scheimpflug rule.
- the cooking appliance has a microwave function and the aperture opening is microwave-tight.
- the aperture opening advantageously permits The aperture opening is so small that it is virtually impermeable to microwaves without affecting the field of view of the camera.
- a lateral extent of the aperture opening does not exceed 10 mm, in particular does not exceed 5 mm, in particular does not exceed 3 mm. These lateral extensions are particularly suitable for blocking microwave radiation.
- a lateral extent of an aperture opening e.g. a diameter of a circular aperture opening, an edge length of a square
- the at least one lens arranged on the garraum subject consists of glass, in particular quartz glass. This results in the advantage that this lens is highly resistant to thermal influences. This is particularly advantageous when a temperature in a cooking chamber exceeds about 220 ° C, which is e.g. in ovens is often the case. Specifically, a glass lens can also withstand damage to temperatures that occur in a pyrolytic self-cleaning, e.g. of 400 ° C or more. It is a general embodiment that the cooking appliance is pyrolysevent.
- At least one lens disposed away from the garraum consists of plastic.
- a lens is particularly inexpensive to produce.
- the use of a plastic lens is facilitated by the fact that due to the use of an aperture opening, the distance to the cooking chamber wall can be particularly large.
- the transmitted-light optical system has at least one aplanatic magnifying glass which is arranged away from the garage space away from the aperture opening.
- the cooking appliance has at least one evaluation device in order to evaluate the images recorded by means of the image recording device. It is a further development that the cooking appliance is set up to control the cooking appliance on the basis of the recorded images. For example, the images can be used to detect food and / or a state of treatment of the food (such as a degree of browning, etc.) and the cooking device to be set to select cooking programs on this basis, to adapt a heating power introduced into the oven (eg also a cooking process to stop), to start and / or stop steam generation etc.
- the cooking appliance has a screen and / or can be coupled to an external screen (eg of a smartphone, a tablet or another user terminal) and is set up to display at least one of the recorded images on the screen Screen.
- an external screen eg of a smartphone, a tablet or another user terminal
- a protective glass is present in front of the at least one lens facing the garraum.
- the protective glass advantageously protects the at least one lens from dirt such as vapor and / or food particles, etc.
- the protective glass in particular has no jet-forming property.
- the protective glass can be cleaned by a user.
- the protective glass can be designed to be removable and removed by a user for cleaning.
- FIG. 1 shows a sectional side view of a sketch of a cooking appliance according to a first embodiment
- FIG. 2 shows a sectional side view of a sketch of a cooking appliance according to a second embodiment
- FIG. 3 shows a sectional side view of a sketch of a cooking appliance according to a third embodiment.
- 1 shows a cooking appliance in the form of a baking oven 1 according to a first embodiment.
- the oven 1 has a cooking chamber 3 delimited by means of a cooking chamber wall 2.
- the cooking chamber 3 has on the front side a charging opening 4 which can be closed by means of an oven door 5.
- In the cooking chamber 3 are at a first rack level E1 and at a lower second rack level E2 food support such as baking trays, grid grate, etc. or partitions, etc. can be arranged. In principle, only one insertion level or more than two insertion levels can be present.
- the cooking chamber 3 can be heated by means of a heating device (not shown), e.g. at least one electrically operated bottom heat radiator, top heat radiator, grill radiator and / or ring radiator, etc. may have.
- a heating device e.g. at least one electrically operated bottom heat radiator, top heat radiator, grill radiator and / or ring radiator, etc. may have.
- the type of heat input is basically not limited and may be e.g. a gas-powered heater, etc. have.
- the oven 1 is optionally equipped with a microwave functionality and has for this purpose a microwave generator 6, e.g. may comprise a magnetron. Also, the oven 1 may optionally be equipped with a steam treatment functionality and for example, a steam generator (not shown), by means of which steam in the cooking chamber 3 can be introduced or in the cooking chamber 3 can be generated.
- a microwave generator 6 e.g. may comprise a magnetron.
- the oven 1 may optionally be equipped with a steam treatment functionality and for example, a steam generator (not shown), by means of which steam in the cooking chamber 3 can be introduced or in the cooking chamber 3 can be generated.
- the oven 1 furthermore has an image recording device 7 for recording images of the cooking chamber 3 or from the cooking chamber 3.
- the image recording device 7 has an outside of the cooking chamber 3 arranged optical sensor in the form of a digital camera 8.
- the digital camera 8 is directed into the cooking chamber 3 through a light passage opening in the form of an aperture 9 introduced into the cooking chamber wall 2.
- Aperture 9 may be sealed by a non-jet-forming disc (not shown), in particular glass, in particular covered.
- the image recording device 7 also has a transmitted light optics 10, which is optically connected to the digital camera 8 and which is configured in particular as a wide-angle retrofocus optic in order to have at least one of the insertion planes E1, E2 over a large area in their field of view.
- the transmitted-light optical system 10 has at least one diverging lens 1 1 arranged on the side of the garnish (here indicated as a plano-concave lens) and at least one collecting lens 12 arranged at a spacing away from the garage (indicated here as a convex-planar lens) io
- the diverging lens 1 1 and the converging lens 12 are arranged here by way of example linearly behind each other and parallel to a sensor plane P1 of the digital camera 8.
- the aperture opening 9 lies apart from an image plane, an object plane and an intermediate image plane of the transmitted-light optical system 10.
- An aperture 9 provides the further advantage that leaks of exiting from the cooking chamber 3 through the aperture 9 thermal radiation and possibly microwave radiation can be kept low.
- the aperture 9 may be so small that it is practically microwave-tight.
- their lateral extent can not exceed 5 mm, in particular 3 mm.
- the aperture 9 may be e.g. be formed as a small circular hole with a diameter of about 3 mm.
- An aperture 9 also causes a high depth of field of the recorded image. This is particularly advantageous since the food to be treated in the cooking chamber 3 typically has a not negligible and, in addition, as a rule not exactly known height.
- the digital camera 8 can be positioned at a particularly great distance from the cooking chamber 3, which allows a reduction of thermal stress on the camera, without reducing the field of view of the digital camera 8.
- the garnish side arranged diverging lens 11 is made of glass and is thus resistant to the ruling in the cooking chamber 3 high temperatures, especially if the oven 1 is a pyrolyseschreiber oven.
- the converging lens 12, however, may be made of plastic or glass.
- the digital camera 8 is coupled to a control device 13 of the oven 1.
- the control device 13 can evaluate the images taken by the digital camera 8 and control the oven 1 based on the evaluation. For example, the images can be used to detect food and / or a state of treatment of the food (such as a degree of browning, etc.) and the control device 13 is set up to select cooking programs on this basis, a heat input (introduced into the cooking space 3) electrically operated radiators, etc.) to control the microwave generator 6, etc.
- control device 13 may be configured to display at least one of the recorded images on a screen 14 of the oven 1 and / or - wireless and / or wired - to an external screen (eg a smartphone, a tablet or another user terminal) transferred to.
- an external screen eg a smartphone, a tablet or another user terminal
- FIG. 2 shows a sectional side view of a sketch of a cooking appliance 21 according to a second embodiment.
- the cooking appliance 21 is constructed similarly to the cooking appliance 1, but now has a differently configured image recording device 22.
- the diverging lens 1 1 of transmitted light 23 and the digital camera 8 are no longer linearly arranged one behind the other, but such that the layers of the sensor plane P1, an objective plane P2 of the diverging lens 11 and a sharpness plane P3 in a line (the so-called Scheimpflug line L ) coincide and the sharpness level P3 corresponds at least approximately to an insertion level (here eg the second insertion level E2).
- an insertion level here eg the second insertion level E2
- the transmitted light optics 23 now also has a garraumabgewandt to the
- a protective glass 25 may be present in front of the diverging lens 11, see the following figure.
- the protective glass 25 protects the lens 11 from dirt (vapors, food particles, etc.).
- the protective glass 25 has in particular no jet-forming intrinsic on. It is a development that the protective glass can be cleaned by a user. For this purpose, the protective glass 25 can be made removable and removed by a user for cleaning.
- FIG. 3 shows a sectional side view of a sketch of a cooking appliance 31 according to a third embodiment.
- the cooking appliance 31 is designed similarly to the cooking appliance 1, but now has a light aperture 32 which serves as a visual field stop.
- a self-contained aperture diaphragm 33 At the side facing away from the cooking chamber 3 of the light passage opening 32 is a self-contained aperture diaphragm 33 with a corresponding aperture 34, which is a component of transmitted light optics 35 of an image pickup device 36 of the cooking device 31.
- the elements 24 and / or 25 may also be present in the exemplary embodiments according to FIGS. 1 and 3 (or other embodiments not shown), the arrangement according to FIG. 3 may fulfill the Scheimpflug condition, etc.
- the transmitted-light optics can also have even more lenses and / or other optical elements.
- a cooking appliance may generally include one or more image capture devices.
- aperture openings can be located in the same side of the cooking chamber wall and / or on different sides.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electric Stoves And Ranges (AREA)
- Electric Ovens (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017220884.8A DE102017220884A1 (de) | 2017-11-22 | 2017-11-22 | Gargerät mit Bildaufnahmeeinrichtung |
PCT/EP2018/080540 WO2019101528A1 (de) | 2017-11-22 | 2018-11-08 | Gargerät mit bildaufnahmeeinrichtung |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3714209A1 true EP3714209A1 (de) | 2020-09-30 |
Family
ID=64277670
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18800899.9A Pending EP3714209A1 (de) | 2017-11-22 | 2018-11-08 | Gargerät mit bildaufnahmeeinrichtung |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3714209A1 (de) |
DE (1) | DE102017220884A1 (de) |
WO (1) | WO2019101528A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9644847B2 (en) | 2015-05-05 | 2017-05-09 | June Life, Inc. | Connected food preparation system and method of use |
US11116050B1 (en) * | 2018-02-08 | 2021-09-07 | June Life, Inc. | High heat in-situ camera systems and operation methods |
US11593717B2 (en) | 2020-03-27 | 2023-02-28 | June Life, Inc. | System and method for classification of ambiguous objects |
USD978600S1 (en) | 2021-06-11 | 2023-02-21 | June Life, Inc. | Cooking vessel |
USD1007224S1 (en) | 2021-06-11 | 2023-12-12 | June Life, Inc. | Cooking vessel |
EP4175419A1 (de) * | 2021-10-28 | 2023-05-03 | LG Electronics, Inc. | Kochgerät |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58140522A (ja) * | 1982-02-15 | 1983-08-20 | Toshiba Corp | 加熱調理器 |
DE4333443A1 (de) * | 1993-09-30 | 1995-04-06 | Bosch Siemens Hausgeraete | Anordnung zur Beobachtung und Überwachung von Garungsvorgängen in Herden |
DE19737357C2 (de) | 1997-08-27 | 2001-07-12 | Bsh Bosch Siemens Hausgeraete | Gargerät mit als Bildschirmplatte ausgebildetem Bildschirm |
JP3672767B2 (ja) * | 1999-06-18 | 2005-07-20 | 株式会社東芝 | 電子レンジ |
JP2001056123A (ja) * | 1999-08-12 | 2001-02-27 | Toshiba Corp | オーブンレンジ |
DE102008042804B4 (de) * | 2007-10-16 | 2013-07-04 | BSH Bosch und Siemens Hausgeräte GmbH | Gargerät mit Kamera sowie Verfahren zum Betreiben eines Gargeräts mit Kamera |
WO2009138359A2 (de) | 2008-05-13 | 2009-11-19 | BSH Bosch und Siemens Hausgeräte GmbH | Haushaltsgerät mit bilderfassungsvorrichtung |
DE102011002187A1 (de) | 2011-04-20 | 2012-10-25 | Miele & Cie. Kg | Haushaltsgerät |
EP2520169B1 (de) | 2011-04-29 | 2019-12-04 | Electrolux Home Products Corporation N.V. | Backofentür und Backofen |
DE102013211097A1 (de) * | 2013-06-14 | 2014-12-18 | BSH Bosch und Siemens Hausgeräte GmbH | Kältegerät mit einem Kameramodul |
KR102362654B1 (ko) | 2015-07-03 | 2022-02-15 | 삼성전자주식회사 | 오븐 |
DE102016124312A1 (de) * | 2016-12-14 | 2018-06-14 | Miele & Cie. Kg | Gargerät mit einer Kamera |
-
2017
- 2017-11-22 DE DE102017220884.8A patent/DE102017220884A1/de active Pending
-
2018
- 2018-11-08 EP EP18800899.9A patent/EP3714209A1/de active Pending
- 2018-11-08 WO PCT/EP2018/080540 patent/WO2019101528A1/de unknown
Also Published As
Publication number | Publication date |
---|---|
WO2019101528A1 (de) | 2019-05-31 |
DE102017220884A1 (de) | 2019-05-23 |
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