EP3714210A1 - Four à équipement de capteurs et ventilateur - Google Patents

Four à équipement de capteurs et ventilateur

Info

Publication number
EP3714210A1
EP3714210A1 EP18800900.5A EP18800900A EP3714210A1 EP 3714210 A1 EP3714210 A1 EP 3714210A1 EP 18800900 A EP18800900 A EP 18800900A EP 3714210 A1 EP3714210 A1 EP 3714210A1
Authority
EP
European Patent Office
Prior art keywords
oven
sensor
air
fan
cooking chamber
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
Application number
EP18800900.5A
Other languages
German (de)
English (en)
Other versions
EP3714210B1 (fr
Inventor
Philipp Nather
Frederic Dubois
Hans-Jürgen Bauer
Andreas Dachs
Armin Miesgang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Hausgeraete GmbH
Original Assignee
BSH Hausgeraete GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Priority to PL18800900T priority Critical patent/PL3714210T3/pl
Publication of EP3714210A1 publication Critical patent/EP3714210A1/fr
Application granted granted Critical
Publication of EP3714210B1 publication Critical patent/EP3714210B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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
    • F24C14/00—Stoves or ranges having self-cleaning provisions, e.g. continuous catalytic cleaning or electrostatic cleaning
    • F24C14/02—Stoves or ranges having self-cleaning provisions, e.g. continuous catalytic cleaning or electrostatic cleaning pyrolytic type
    • 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
    • F24C15/006—Arrangements for circulation of cooling air

Definitions

  • the invention relates to an oven, comprising a baking tube, which encloses a cooking chamber, and an outer housing, a sensor device directed into the cooking chamber, which is arranged in an inner space between the oven and the outer housing, at least one sensor fan, which is adapted and ventilating the sensor device with cooling air, the sensor device having at least one viewing pane arranged between the sensor element and the cooking chamber.
  • the invention is particularly advantageously applicable to pyrolysecloude ovens.
  • the problem typically arises that the sensor element of the sensor device is also heated when the oven is heated. As a result, the temperatures at the sensor element can rise so high that it has to be switched off in order to avoid overheating. This is particularly relevant if the temperatures in the oven are above 300 ° C. Especially in self-cleaning operations, the temperatures in the oven or a cooking chamber delimited by the oven can reach over 450 ° C or even over 500 ° C.
  • a plurality of spaced-apart disks arranged in series between the sensor element and the oven can be provided, between which air cushions result. This can lead to the sensor device becoming bulky, which is disadvantageous due to a restricted installation space in ovens. Also, the sensor device can be cooled by means of an air flow, which also cools a furnace electronics. It is, however,
  • WO 2015/18521 1 A2 discloses a heat treatment monitoring system comprising a heat treatment apparatus comprising a heat treatment chamber and at least one light source fixture for mounting a light source for illuminating the inside of the heat treatment chamber; and a monitoring device comprising a camera, a camera light source, and a mounting part, wherein the mounting part is adapted to be detachably attached to the light source mounting.
  • WO 2016/056246 A1 discloses a heating cooker provided with: a heating chamber that receives a food; a through hole formed in a wall surface of the heating chamber; an imaging unit that takes an image of the interior of the heating chamber through the through hole; an air blower unit that blows air outside the heating chamber; and an air blowing guide that directs air from the air blow unit.
  • the air blowing guide is arranged so that the air from the air blowing unit forms an air curtain that traverses a space between the imaging unit and the through hole.
  • DE 197 48 002 A1 discloses a cooking device, in particular with means for pyrolytic cleaning, with a furnace muffle, in the wall of which an oven light with a lamp holder and a lamp mounted therein is arranged with a base for illumination and with one above the oven muffle between a blow-out opening of adege- blower and an opening into the open air outlet opening arranged
  • Fan shaft In order to keep the failure rate of the lamps, especially during pyrolysis operation, low, part of the air blown out of the exhaust opening of the cooling device is directed onto the lamp socket or the base of the lamp for cooling thereof.
  • DE 297 18 343 U1 discloses a lighting device for a cooker equipped with a fan for cooling or circulating air and a cooling air chamber at least partially surrounding the cooking chamber, with a luminaire housing to be mounted in the cooking space in the region of a cutout, which has a socket for a lamp and wherein the space formed by the lamp housing to the cooking chamber is closed by a translucent cover, wherein the lamp housing is provided with a connection for a cooling air line, the at least one part of the air blower generated by the air flow through the lamp housing, thereby passing the lamp passes.
  • EP 2 333 425 A1 discloses a domestic appliance for preparing food, which has a cooking chamber, which is delimited by a muffle, and has a fan arranged outside the cooking chamber, which is designed to generate a cooling air flow, and comprises a lamp, which is used for illumination the cooking chamber is arranged, and a main channel for cooling air flow and a secondary channel forde Kunststoffzu- are formed to guide the lamp, wherein in a boundary wall of the secondary channel, an inclined baffle plate is arranged.
  • DE 10 2014 203 531 A1 discloses a cooking appliance with a cooking chamber which is delimited by walls of a muffle, and with an air guiding device which has at least one air shaft for supplying a cooling air flow to a lighting device of the cooking appliance arranged for illuminating the cooking chamber, wherein the air shaft over the muffle is arranged and the air guiding device comprises a duct floor and an air duct cover, wherein the lighting device has at least one completely outside of the cooking chamber arranged light source, which is flowed around by the cooling air flow, which is formed from an air duct cover device space in a respect to a fluidic position of a blower ; in the air guide device, the air duct device has a suction chamber section separate from the equipment compartment and seen with respect to a fluidic position of the fan in the air duct device, and / or a heat sink of the lighting device is thermally coupled to the duct floor and / or the duct slot.
  • DE 10 2005 044 626 A1 discloses a cooking appliance, in particular a high-installation cooking appliance, with at least one muffle delimiting a cooking space and at least one luminaire attached to the muffle, which has at least one lamp and a lamp cover.
  • the lamp is ventilated from outside the muffle with cooling air.
  • EP 2 463 588 A1 proposes an oven with an air shaft which has a base element and a lid.
  • the lid comprises an air passage area adjacent to a passage opening for a socket of a lamp with a plurality of ventilation openings which allow passage of air of a cooling air flow around the lamp out of the air shaft.
  • an oven comprising a baking tube, which encloses a cooking chamber, an outer housing, a sensor device directed into the cooking chamber, which is arranged in an inner space between the oven and the outer housing, and at least one fan (in Without limitation of generality referred to as "sensor fan” hereinafter), which is adapted to ventilate the sensor device with cooling air
  • the sensor device comprises a tubular sensor housing open on the front side, in which at least one sensor element is accommodated and whose front end face is directed in the direction of the cooking chamber, the sensor device has at least one arranged between the sensor element and the cooking glass, a rear end of the sensor housing as an air inlet opening for admitting the cooling air is used, a pressure side of the sensor fan with the rear end face is connected lufttech nically, the Sensorgecher has at least one lateral air outlet opening for discharging the cooling air and a suction side of the sensor fan is technically connected to a space which is separated from a space in which the sensor device is located.
  • This oven has the advantage that a cooling air flow can be directed specifically to the at least one sensor element.
  • the at least one lateral air passage opening the blown-in cooling air is blown out, whereby a flow amount of the cooling air flow, which flows around the at least one sensor element, is increased.
  • the rear air inlet makes it particularly easy to assemble the cooling air from the separated room into the sensor housing.
  • the oven can be a pure oven or an oven / hob combination (stove).
  • the oven can have one or more additional cooking functions such as a microwave radio tion, a Dampfgarfunktion etc. have.
  • the oven is especially a household oven.
  • the oven can also be referred to as cooking space.
  • the oven has a high-temperature cleaning function, in particular a pyrolysis function.
  • the present invention can be used particularly advantageously, since in a high-temperature cleaning process particularly high temperatures result in the cooking chamber and the at least one sensor element due to the sensor ventilation even at such elevated temperatures (often 450 ° C or 500 ° C) is not damaged, even in operation.
  • the at least one sensor element is an optical sensor element, that is, it senses or senses radiation emerging from the cooking chamber and passing through the at least one viewing pane.
  • the at least one sensor element may comprise at least one IR sensor, e.g. at least one PIR sensor or at least one thermopile.
  • the at least one sensor element may additionally or alternatively comprise at least one visible light-sensing sensor, e.g. a camera sensor such as a CCD sensor, etc. Radiation emanating from the cooking chamber can then fall into the sensor after passing through the viewing window (s). Images taken by the camera or the camera sensor can be used, for example, to control a cooking process and / or be displayed in a screen, e.g. on a screen of the oven and / or a smartphone etc.
  • the sensor housing is open at the front, means in particular that it has a form open on both sides of the front side.
  • the sensor housing can be covered, in particular sealed, at the front end face facing the cooking chamber by at least one viewing window. It is a development that also the sensor housing consists of a high temperature resistant and thermally poorly conductive material, in particular ceramic.
  • the sensor housing may be a rectilinear and / or a curved tube. A cross section may be circular, oval or angular, e.g. square, be.
  • the sensor fan is set up to ventilate the sensor device with cooling air and that a pressure side of the sensor fan is connected to the rear end side in an air-technical manner enables the sensor fan to introduce cooling air into the sensor housing in a targeted manner. blows, in particular without prior cooling of other functional components of the oven.
  • a "ventilation connection" of areas may in particular be understood as meaning that a noticeable (and for example not only negligibly small or an unintentionally generated or parasitic) air flow can be generated between these areas by means of a ventilator.
  • the pressure side of the sensor fan with the rear end face is connected by ventilation may include that from the pressure side of the sensor fan from a noticeable air flow in the rear end side can be introduced.
  • a suction side of the sensor fan is air-technically connected to a space which is separated from a room in which the sensor device is located, sucked in the separate room air are sucked into the fan, in particular practically exclusively from the separated room.
  • the sensor fan may be located remotely from the tubular sensor housing and connected to the sensor housing via a hose, pipe, or other air duct. Alternatively, the fan may be arranged in the region of the end face facing away from the baking tube.
  • a view of accommodated in the sensor housing at least one sensor element is made possible in the cooking chamber.
  • a camera may be directed into the cooking chamber.
  • At least one viewing window may be beamforming, e.g. as a lens. At least one viewing window can not be formed jet-forming and then serve as a viewing window.
  • the viewing window can be a glass pane, since it is particularly temperature-resistant and virtually inert to chemical environments.
  • at least one viewing window can also be made of plastic, e.g. if the ambient temperatures of this lens do not exceed 260 ° C.
  • the viewing window (s) may or may in particular be transparent.
  • the sensor device can in particular have a plurality of viewing windows arranged in spaced-apart relationship between the sensor element and the cooking chamber, as a result of which a heat shielding of the at least one sensor element against the cooking chamber can be further increased.
  • suction side of the sensor fan is connected to a ventilation environment of the oven.
  • the separated room thus corresponds to an external space or the surroundings of the oven. This gives the advantage that the cooling air is very cool.
  • suction side of the sensor fan is connected to an outwardly leading air passage. So the advantage is achieved that practically only cool ambient air is sucked into the fan.
  • the suction side of the sensor fan is connected to a separated portion of the inner space between the stovepipe and the outer casing, which is separated from an internally ventilated portion of the inner space.
  • the separated room thus corresponds to the subarea.
  • advantageously, particularly cool air can be sucked in.
  • an internally ventilated area typically has heat-generating components which are cooled by the internal ventilation. Utilization of this air already used for cooling the heat-generating components as cooling air for cooling the at least one sensor element would be disadvantageous since it is warmer than the air sucked from the separated partial area or as outside air.
  • heat generating components may e.g. be electronic components, such as control electronics.
  • the sensor fan is connected to at least one heat-insulated air duct.
  • the heat-insulated air duct may consist of a poorly heat-conducting material or be coated in a heat-insulating manner.
  • a heat-insulating air duct can with a suction side be connected to the fan and / or heat-insulating air duct may be connected to a pressure side of the fan.
  • the sensor fan is a ventilator dedicated for ventilating the interior of the sensor housing, that is, in particular, not specifically designed or provided for cooling other heat-generating functional components.
  • This allows a structurally particularly simple design of the sensor ventilation.
  • the oven in addition to the sensor fan another fan (hereinafter referred to as "indoor fan” without limitation to the general public) for generating an internal air flow in the interior.
  • door fan By the interior fan, other heat-generating functional components can be specifically cooled, e.g. electronic components.
  • the oven has a fan (hereinafter referred to as "combination fan” without restricting the generality), wherein cooling air sucked in by the interior fan is discharged into a first air flow on the pressure side (hereinafter referred to as “sensor air flow "), which is led directly to the rear end side of the sensor housing, and into a second air stream (hereinafter referred to as” inside air flow "without limitation), which is directed into the interior (outside the sensor housing) is divided.
  • the combination fan thus serves both as an "indoor fan” and as a sensor fan, whereby advantageously a dedicated sensor fan can be saved.
  • the oven is set up to direct the inner air flow on the outside of the sensor housing.
  • the sensor housing can also be cooled, which assures compliance with limit temperatures at the at least one sensor element.
  • the oven is adapted to direct the inner air flow through a gap between two windows.
  • the advantage is achieved that these lenses are effectively cooled.
  • it can be prevented in such a way that air located between the viewing windows heats up strongly.
  • another space between two viewing windows ventilates. is tightly closed.
  • heat-insulating layer between the cooking chamber and the at least one sensor element can be provided.
  • the airtightly closed intermediate space is located on a side of the space through which air flows, since a heat transfer to the at least one sensor element can be reduced particularly effectively.
  • one of the viewing panes is a viewing window that is closed to the airtight seal and the space through which air flows, which allows a particularly compact construction.
  • This lens acts in particular as a cutting disc between the two spaces.
  • the sensor housing is surrounded transversely to its longitudinal extent by at least one air guide plate and the oven is adapted to direct the inner air flow along at least one side baffle on the sensor housing.
  • At least between the air guide plate and the baking tube, an air space extending along the baking tube (hereinafter referred to as "shaft" without restriction of generality) is generated by the air guide plate, through which the inner air flow flows.
  • shaft an air space extending along the baking tube
  • an intermediate wall is located between an air guide plate and the baking tube, wherein an intermediate space between the oven tube and the intermediate wall is filled with heat-insulating material.
  • the shaft is then formed between the air baffle and the intermediate wall.
  • the sensor housing is surrounded transversely to its longitudinal extent by a plurality of air baffles, which are spaced from one another in the direction of a longitudinal extent of the sensor housing.
  • a plurality of air baffles which are spaced from one another in the direction of a longitudinal extent of the sensor housing.
  • the plurality of baffles may be two, three, four or even more baffles.
  • the inner air flow on both sides of an air guide plate on the sensor housing can be directed, that the inner air flow first along a side facing the cooking chamber of the air guide plate and then flows along a cooking chamber facing away from the side of the air baffle.
  • the oven is set up so that the inner air flow first flows along a side of the air baffle facing the cooking chamber, then flows over at least one heat-generating functional component of the oven and then flows along a side of the air baffle facing away from the cooking chamber ,
  • the colder air of the inner air flow is directed towards a longitudinal section of the sensor housing arranged closer to the baking tube or to the cooking chamber than the warmer air of the inner air flow.
  • a particularly effective cooling of the sensor housing and thus also of the at least one sensor element is achieved.
  • the baking oven is set up to suck the inner air flow on the side of the air baffle facing the cooking chamber by means of a fan (for example a dedicated interior fan or the combination fan) and to blow it out on the side of the air baffle facing away from the cooking chamber.
  • the sensor housing is surrounded transversely to its longitudinal extent by at least one air guide plate, at least one lateral air outlet opening is arranged on a side of the air guide plate facing away from the cooking chamber and the at least one lateral air outlet opening is connected to an air guide channel, which extends up to the cooking chamber side facing the baffle.
  • the sensor device has at least one additional functional element in a section between the at least one sensor element and the baking tube. In this way, heat protection can be improved, a range of functions can be expanded and / or user-friendliness can be increased.
  • At least one additional functional element is a layer of amorphous silicon dioxide, in particular airgel.
  • a layer can be arranged between two viewing windows or between a viewing window and the at least one sensor element.
  • At least one viewing window is coated, e.g. has an IR-reflective coating.
  • a heat transfer to the at least one sensor element can be further reduced.
  • At least one functional element is a Lichtpolarisator or a spectral filter.
  • at least one viewing window can be designed as a light polarizer or spectral filter.
  • At least one lens is mirrored or anti-reflective or at least partially reflective acts.
  • the sensor device is modularly composed of several exchangeable modules.
  • the advantage is achieved that the sensor device can be easily modified, eg at the factory or even at an end user, eg by a service technician. This also facilitates replacement of worn or defective components.
  • the oven is provided on its side facing away from the cooking chamber with a heat-insulating insulation (see also above), having an opening leading through the oven and the insulation, the sensor device is directed through the opening in the oven, a first (Front) of the sensor device is mounted on the oven, a second lens of the sensor device is mounted in the region of an outer side of the insulation and the first lens is connected to the second lens over several rods.
  • the rod can also be used as a rod or similar. be designated.
  • the rod may be full (voluminous) or hollow on the inside (e.g., in the form of a thin tube). It is a further education that the poles are straight. However, they may in principle also be curved, e.g. helically curved. Between the bars are in particular open areas.
  • the thermal insulation may e.g. Mineral wool, hard foam, etc. be.
  • the insulating insulation is arranged in particular like a sheet on the oven and surrounds the oven in particular a large area.
  • the leading through the oven and the insulation opening is particularly cylindrical.
  • the fact that the at least one sensor element is directed through the opening into the oven includes, in particular, that the oven is in the field of view of the sensor element.
  • the fact that the first viewing window is mounted on the baking tube comprises that the first viewing pane - if it is equipped with a holder - is fastened to the baking tube via its holder.
  • it is airtight mounted on the oven to avoid parasitic air currents from the oven to the first lens or its holder over. The first lens thus closes the opening against the furnace chamber airtight.
  • the fact that the second viewing window is mounted in the region of an outer side of the insulation comprises, in particular, that the first viewing window - if it is equipped with a holder, whose holder - rests on the insulation.
  • it is airtight mounted on the oven to avoid parasitic air flows of air from the region of the opening on the second lens or its holder over in a housing area outside the insulation.
  • the oven has a the oven at least around the Publ tion spaced around surrounding intermediate wall (see also above) and the insulation between the oven and the intermediate wall is present, in particular completely fills this gap.
  • the second lens or its holder may be attached to the intermediate wall. This results in the advantage that the second viewing window is particularly stable and positionally accurate fastened.
  • the rods are spaced from each other. It is an embodiment that the first viewing window is connected to the second viewing window via a plurality of mutually parallel rods. This gives the advantage of a particularly simple and inexpensive production and a particularly robust construction.
  • rods can also be crossed, in particular connected to one another.
  • the several rods can also assume a grid-like form.
  • the rods consist of a thermally poorly conducting material, in particular with a thermal conductivity W of less than 30 W / (mK), in particular less than 15 W / (mK), in particular less than 10 W. / (mK), in particular less than 5 W / (mK), in particular less than 3 W / (mK), in particular less than 2 W / (mK), in particular less than 1 W / (mK) ,
  • the rods are made of a high temperature resistant material, in particular with a heat resistance of at least 300 ° C, in particular of at least 400 ° C, in particular of at least 450 ° C, in particular of at least 500 ° C.
  • the rods are made of ceramic.
  • Ceramic has the advantages of high heat resistance, high chemical inertness, potentially low thermal conductivity and high rigidity. Possible ceramics can e.g. have or consist of porous aluminum oxide, silicon nitride, zirconium oxide or silicate ceramic.
  • the first viewing window is inserted at the edge into a first ringför shaped retaining ring. This advantageously facilitates attachment of the first viewing window.
  • the first viewing window can be connected airtight with the first retaining ring.
  • the rods are attached to the first retaining ring. This results in the advantage that the rods can be arranged particularly firmly and precisely in position relative to the first viewing window.
  • the second viewing window is inserted at the edge into a second ring-shaped retaining ring. This advantageously facilitates attachment of the first viewing window.
  • the second viewing window can be connected airtight with the second retaining ring.
  • the rods are attached to the second retaining ring. This results in the advantage that the rods can be arranged particularly firmly and with exact position relative to the second viewing window.
  • the sensor device is loosely surrounded by the height of the insulation of a sleeve inserted into the opening.
  • the sleeve prevents a particularly reliable penetration of foreign bodies (eg fibers of the insulation) between the rods into the intermediate space between the first viewing pane and the second viewing pane.
  • the fact that the sensor device is loosely surrounded by the sleeve affords the advantage that heat input from the sleeve onto the sensor device can be kept low or even practically avoided altogether. That the sensor device loose Is surrounded by the sleeve, may include that the sleeve is only selectively and then only slightly connected to the sensor device, in particular with the rods and / or the screen holders.
  • the fact that the sensor device is loosely surrounded by the sleeve can also include that the sleeve does not touch the sensor device and is thus arranged at a distance from the sensor device.
  • the sleeve is made of a high-temperature resistant and thermally poorly conductive material, in particular of ceramic. Thus, a heat conduction from the oven or cooking chamber is further reduced.
  • the second viewing window is arranged on the front side of the sensor housing facing the cooking chamber, a third viewing pane is inserted in an interior space of the sensor housing and the at least one sensor element is in the sensor housing on a side facing away from the oven cavity third viewing window is arranged.
  • the advantage is achieved that the at least one sensor element is even more effectively protected from heat.
  • a further air-filled thermally insulating gap is provided through the interior of the sensor housing one, the second viewing window and the third viewing window.
  • the second viewing window and the third viewing window close off a section of the tubular sensor housing limited by them.
  • FIG. 1 shows a sectional side view of a fragmentary sketch of a baking oven with a sensor device arranged thereon according to a first exemplary embodiment
  • FIG. 2 shows a sectional side view of a detail sketch of a baking oven with a sensor device arranged thereon according to a first exemplary embodiment t; 3 shows a sectional side view of a fragmentary sketch of a baking oven with a sensor device arranged thereon according to a first exemplary embodiment; and
  • FIG. 4 shows a sectional side view of a partial sketch of a baking oven with a sensor device arranged thereon according to a first exemplary embodiment.
  • FIG. 1 shows a sectional side view of a detail of a pyrolysefä- higen oven 1 with a sensor device 2 arranged thereon.
  • the oven 1 has a baking tube 3, which encloses a cooking chamber 4.
  • the oven 3 is on the outside - that is, on its side facing away from the cooking chamber 4 - provided with a heat-insulating insulation 5 or insulating material. Through the oven 3 and the insulation 5 performs an opening. 6
  • the sensor device 2 has a sensor element in the form of a camera 7, the field of view of which is directed through the opening 6 into the cooking chamber 4.
  • the camera 7 is arranged outside of the oven 3 and the insulation 6.
  • the sensor device 2 additionally has a plurality of glass panes 8, 9, 10 of glass arranged in series between the camera 7 and the cooking chamber 4, of which a first viewing pane 8 is attached to the oven 3 and a second pane 9 in the region an outside of the insulation 5 is attached.
  • the first lens 8 is peripherally circumferentially peripherally encircled in a first retaining ring 11 to its holder.
  • the second lens 9 is peripherally circumferentially edged in a second support ring 12 airtight for their support.
  • the first retaining ring 11 is fastened on the inside to the baking tube 3, wherein the first viewing window 8 can then be located in the cooking chamber 4.
  • the first retaining ring 11 and the first lens 8 seal the opening 6 against the cooking chamber 4.
  • the second retaining ring 12 is fastened to an intermediate wall 13 extending at a distance from the outside of the oven 3.
  • the area between the oven 3 and the intermediate wall 13 is filled with the insulation 5.
  • the second retaining ring 12 and the second lens 9 seal the opening 4 facing away from the cooking chamber 4 from.
  • an air-filled gap 14 is formed, which provides a heat insulation between the first lens 8 and the second lens 9.
  • the first viewing pane 8 with the second viewing pane 9 is above the holders 1 1 and 12 connected by means of several rods 15.
  • the rods 15 are fastened to the holders 1 1 and 12, in such a way that the rods 15 run perpendicular to the viewing windows 8 and 9 and parallel to a longitudinal extent L of the sensor device 2.
  • the rods 15 run parallel to one another and are arranged equidistantly on the retaining rings 1 1, 12 in the circumferential direction.
  • the rods 15 are here geradli nige rods 15 made of ceramic.
  • the sensor device 2 can be loosely surrounded by a height of the insulation 5 inserted in the Publ opening 6 sleeve 16, as indicated by dashed lines.
  • the sleeve 16 consists e.g. made of ceramic and separates the insulation 5 from the intermediate space 14.
  • the second lens 9 is also arranged on a front side of the tubular tube 3 facing the sensor tube 2 of the sensor device 2.
  • the sensor housing 17 is aligned with its longitudinal axis along the longitudinal extent L of the sensor device 2.
  • the third lens 10 is inserted so that it traverses the interior 18.
  • the third viewing window 10 is in particular used airtight in the sensor housing 17.
  • the camera 7 is arranged in the housing 17 on a side facing away from the baking tube 3 side of the third lens 10. The camera 7 is therefore thermally insulated from the cooking chamber 4 by the two intermediate spaces 14 and 15.
  • the oven 1 also has a sensor fan 20, which is adapted to blow cool air into the ("rear") end face 21 of the tubular sensor housing 17 facing away from the baking tube 3.
  • This is the Sensor fan 20 is arranged here in a tube 27 serving as an air duct.
  • the tube 27 is connected to a rear side of the sensor housing 17, so that a pressure side of the sensor fan 20 is connected to the rear end face 21 by ventilation technology.
  • the other end of the tube 27 opens into an outer housing 28 of the oven 1, so that a suction side of the sensor fan 20 is directly connected to an outside space A or the environment of the oven 1 air technically.
  • the outer space A is separated by the outer housing 28 from an inner space 32 between the outer housing 28 and the oven 3, in which the sensor device 2 is located.
  • the tube 27 can consist of thermally poorly conducting material and thereby be thermally insulated from its surroundings. Alternatively, the tube 27 may have a thermal jacket (not shown).
  • the sensor fan 20 By means of the sensor fan 20 cool ambient air is sucked through the tube 27 and blown almost completely as a cooling air flow S1 into the interior of the sensor housing 17.
  • the sensor housing 17 In order to be able to generate a particularly strong cooling air flow S1 at the location of the camera 7, the sensor housing 17 has a plurality of air outlet openings 22 introduced laterally of the camera 7.
  • the sensor housing 17 airtight at an altitude between the second lens 9 and the camera 7 of a transversely to a longitudinal extent L of the sensor housing 17 extending shipsleit be surrounded sheet 23.
  • the air guide plate 23 extends here at least approximately parallel to the oven 3 and to the intermediate wall 13.
  • the oven 1 has a separate interior fan 29, by means of which an internal air flow S2 in the interior 32 transversely to the longitudinal extent of the sensor housing 17 in a gap or shaft 30 between the air guide plate 23 and the insulation tion 5 or the partition wall 13 generates becomes.
  • the inner air flow S2 in the shaft 30 is laterally directed to the sensor housing 17, so that the air of a lateral surface or surface of the sensor housing 17 flows around the outside.
  • the sensor housing 17 has another air guide plate 24 extending transversely to a longitudinal extension L of the sensor housing 17, which is further away from the oven 3 than the air guide plate 23.
  • the air guide plate 24 extends at least here. approaching parallel to the air guide plate 23. Between the air guide plate 23 and the air guide plate 24 thus another shaft 31 is provided, through which the inner air flow S2 can flow.
  • the inside air flow S2 can thereby be directed onto the sensor housing 17 again transversely to the longitudinal extent L of the sensor housing 17.
  • the inner air flow S2 first flows along a side of the air guide plate 23 facing the cooking chamber 4 and then along a side of the air guide plate 23 facing away from the cooking chamber 4.
  • the flowing in the shaft 30 inner air flow S2 thereby flows around a closer to the cooking chamber 4 longitudinal portion of the sensor housing 17 as the air flowing in the shaft 31 inside air flow S2.
  • the inside airflow S2 flowing in the shaft 30 is in particular colder than the inside airflow S2 flowing in the shaft 31.
  • the sensor device 2 may comprise at least one additional functional element, e.g. in the form of a motor-operated, selectively opening and closing shutter or aperture 25 have.
  • the aperture 25 is arranged in the cooking chamber 4 adjacent to the cooking space side of the first viewing pane 8.
  • the screen 25 On its side facing the first window 8, the screen 25 may be provided with a cleaning device which contacts the first window 8 when the shutter is closed or partially closed. By opening and closing as required, the surface of the first viewing pane 8 that is on the side of the garraum can be cleaned in this way.
  • a metal grid 26 can also be located on the garaging side of the first viewing pane 8.
  • the sensor device 2 can be modularly composed of several replaceable modules.
  • a first module M1 may have the first viewing pane 8 with holder 11
  • a second module M2 may have the second viewing pane 9 with holder 12
  • / or a third module M3 may correspond to the sensor housing 17, as indicated by the dashed lines.
  • the sensor housing 17 itself can again be subdivided in sections along the longitudinal extent into a plurality of modules M3-1, M3-2 and M3-3. This results in the advantage that the air baffles 23 and 24 can be clamped tightly against the sensor housing 17 between these modules M3-1, M3-2 and M3-3 for tight connection.
  • the modules M3-1, M3-2 and M3-3 may have notches in the region of the air baffles 23 and 24 in order to provide the modules M3-1, M3-2 and M3-3. half of the baffles 23 and 24 to contact the entire surface.
  • the additional functional units or functional elements 20, 25, 26 as well as the tube 27 with the fan 20 can also be designed as modules.
  • the rods 15 may be extended further rearward through the second support 12, i.e., in a direction away from the oven 3, or cooking compartment 4, and may be extended by further modules, e.g. also pass through the modules M3-1, M3-2 and possibly M3-3 (not shown).
  • further modules e.g. also pass through the modules M3-1, M3-2 and possibly M3-3 (not shown).
  • the rods can also serve as fixing elements and / or assembly and position aids for these further modules M3-1, M3-2 and optionally M3-3.
  • FIG. 2 shows a sectional side view of a detail of a pyrolysefä- higen oven 41 with a sensor device 42 arranged thereon.
  • the oven 41 is similar to the oven 1 constructed.
  • the sensor fan 20 is now not attached to the sensor housing 17, but away from it.
  • the pressure side of the sensor fan 20 is connected to the sensor housing 44 via a hose 43.
  • the tube 43 is slipped here airtight over a rear gate of the sensor housing 17.
  • the sensor device 41 is not arranged here in a region of the oven 3 without insulation 5 and without intermediate wall 13. Furthermore, only the two view discs 8 and 10 are present here, the bil an airtight space 45 between them. In addition, the air outlet openings 22 are now located further away from the cooking chamber 4 than the camera 7.
  • FIG 3 shows a sectional side view of a detail of a pyrolysefä- higen oven 51 with a sensor device 52 disposed thereon.
  • the oven 41 is similar to the oven 1 constructed, similar to the oven 41 a fan ausbias person via a hose 43 with the Sensor housing 17 is connected.
  • this fan is now a combination fan 53, which sucks cool air from the outside space A and separately generates and provides both the cooling air flow S1 and the interior flow S2.
  • the splitting into the cooling air flow S1 and into the inner raumstrom S2 also happen ventilation behind the combination fan 53, for example, by providing a Heilstromtrenners or air diverter (o. Fig.).
  • a fourth viewing window 54 is present, which is held at its edge by a retaining ring 55.
  • the fourth viewing window 54 is arranged between the first window 8 and the second viewing window 9.
  • the retaining ring 55 is formed so as to have lateral air passage openings 56 or to form between it and the retaining ring 12.
  • An intermediate space 57 between the second pane 9 and the fourth viewing pane 53 is thus permeable to the inside air flow S2 laterally.
  • the air passage openings 56 are located here at the level of the shaft 30.
  • the intermediate space 19 between the second window 9 and the third window 10 is furthermore hermetically sealed.
  • FIG. 4 shows a sectional side view of a section of a pyrolysefä- higen oven 61 with a sensor device 62 arranged thereon.
  • the oven 61 is similar to the oven 1 constructed, except that now the lateral Heilauslassöff- tion 22 on its outer side in each case with a Air duct 63 are connected, which extends up to the cooking chamber 4 facing side of the air baffle 23, ie in the shaft 30.
  • the air duct 63 set here on the left is aligned so that the effluent from him into the shaft 30 cooling air S1 shown against the Direction of the local indoor air flow S2 is directed.
  • the spaces 14, 19 may also be evacuated.
  • the present invention is not limited to the illustrated embodiment.
  • a numerical value may include exactly the specified number as well as a customary tolerance range, unless this is explicitly excluded.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electric Stoves And Ranges (AREA)

Abstract

L'invention concerne un four (1) qui comporte un tube de cuisson (3) qui entoure un espace de cuisson (4), une enceinte extérieure (28), un équipement de capteurs (2) dirigé vers l'intérieur de l'espace de cuisson qui est agencé dans un espace intérieur entre le tube de cuisson (3) et l'enceinte extérieure, et au moins un ventilateur (20) de capteurs destiné à ventiler l'équipement de capteurs avec de l'air froid (S1), l'équipement de capteurs comportant un boîtier de capteurs (17) ouvert à l'avant dans lequel est installé au moins un élément de capteur (7) et dont la face avant est dirigée en direction de l'espace de cuisson, l'équipement de capteurs comportant au moins un disque de vision (8-10) agencé entre l'élément de capteur et l'espace de cuisson, une face avant (21) du boîtier de capteurs servant d'ouverture d'admission d'air pour l'air froid (S1), un côté de pression du ventilateur de capteurs étant connecté à la face arrière, le boîtier de capteurs comportant une ouverture d'évacuation d'air (22) pour l'air froid et un côté d'aspiration du ventilateur de capteurs étant connecté à un espace (A) qui est séparé de l'espace de l'équipement de capteurs. Le four est en particulier un four à pyrolyse.
EP18800900.5A 2017-11-22 2018-11-08 Four avec capteur et ventilateur Active EP3714210B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL18800900T PL3714210T3 (pl) 2017-11-22 2018-11-08 Piec do pieczenia z układem czujnikowym i z wentylatorem

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017220886.4A DE102017220886A1 (de) 2017-11-22 2017-11-22 Backofen mit Sensoreinrichtung und Lüfter
PCT/EP2018/080544 WO2019101529A1 (fr) 2017-11-22 2018-11-08 Four à équipement de capteurs et ventilateur

Publications (2)

Publication Number Publication Date
EP3714210A1 true EP3714210A1 (fr) 2020-09-30
EP3714210B1 EP3714210B1 (fr) 2022-01-19

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EP18800900.5A Active EP3714210B1 (fr) 2017-11-22 2018-11-08 Four avec capteur et ventilateur

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EP (1) EP3714210B1 (fr)
CN (1) CN111344520B (fr)
DE (1) DE102017220886A1 (fr)
PL (1) PL3714210T3 (fr)
WO (1) WO2019101529A1 (fr)

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CN110913522A (zh) * 2019-11-29 2020-03-24 广东美的厨房电器制造有限公司 冷却风道及具有其的微波炉
DE102020108572A1 (de) 2020-03-27 2021-09-30 Rational Aktiengesellschaft Gargerät mit Optik
DE102021200669A1 (de) 2021-01-26 2022-07-28 BSH Hausgeräte GmbH Haushalts-Gargerät mit motorisch längsverschieblichem Sensor
CN115299767A (zh) * 2022-08-04 2022-11-08 杭州老板电器股份有限公司 蒸烤箱及防护玻璃防挂水的方法
BE1031879B1 (de) 2023-08-09 2025-03-11 Miele & Cie Gargerät mit Kameraeinrichtung
WO2025143598A1 (fr) * 2023-12-28 2025-07-03 삼성전자주식회사 Appareil de cuisson
WO2025202683A1 (fr) * 2024-03-27 2025-10-02 Gorenje, d.o.o. Appareil électroménager comprenant un dispositif de capture d'images et/ou de vidéos

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Also Published As

Publication number Publication date
CN111344520A (zh) 2020-06-26
EP3714210B1 (fr) 2022-01-19
DE102017220886A1 (de) 2019-05-23
PL3714210T3 (pl) 2022-04-19
CN111344520B (zh) 2022-05-27
WO2019101529A1 (fr) 2019-05-31

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