EP4337892A1 - Procédé pour refroidir la buée ou la vapeur s'échappant du compartiment de cuisson d'un appareil de cuisson et appareil de cuisson - Google Patents

Procédé pour refroidir la buée ou la vapeur s'échappant du compartiment de cuisson d'un appareil de cuisson et appareil de cuisson

Info

Publication number
EP4337892A1
EP4337892A1 EP22725432.3A EP22725432A EP4337892A1 EP 4337892 A1 EP4337892 A1 EP 4337892A1 EP 22725432 A EP22725432 A EP 22725432A EP 4337892 A1 EP4337892 A1 EP 4337892A1
Authority
EP
European Patent Office
Prior art keywords
opening
cooking
door
cooking chamber
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.)
Granted
Application number
EP22725432.3A
Other languages
German (de)
English (en)
Other versions
EP4337892B1 (fr
EP4337892C0 (fr
Inventor
Anna Günter
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.)
Miele und Cie KG
Original Assignee
Miele und Cie KG
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 Miele und Cie KG filed Critical Miele und Cie KG
Publication of EP4337892A1 publication Critical patent/EP4337892A1/fr
Application granted granted Critical
Publication of EP4337892B1 publication Critical patent/EP4337892B1/fr
Publication of EP4337892C0 publication Critical patent/EP4337892C0/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
    • F24C15/00—Details
    • F24C15/32—Arrangements of ducts for hot gases, e.g. in or around baking ovens
    • F24C15/322—Arrangements of ducts for hot gases, e.g. in or around baking ovens with forced circulation
    • F24C15/327—Arrangements of ducts for hot gases, e.g. in or around baking ovens with forced circulation with air moisturising
    • 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
    • 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
    • F24C15/20—Removing cooking fumes
    • F24C15/2007—Removing cooking fumes from oven cavities
    • 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
    • F24C15/32—Arrangements of ducts for hot gases, e.g. in or around baking ovens
    • F24C15/322—Arrangements of ducts for hot gases, e.g. in or around baking ovens with forced circulation
    • 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

Definitions

  • the invention relates to a method for cooling the vapor or steam escaping from the cooking chamber of a cooking appliance, in particular an oven or steam cooker, the cooking appliance being equipped with a cooking chamber, a door for closing a front loading opening of the cooking chamber, a cooling device for replacing part of the Vapor or steam in the cooking chamber by cold air and with a control device for actuating the cooling device depending on a control command.
  • the invention also relates to a cooking appliance for carrying out such a method.
  • cooking appliances when the food to be cooked is heated, hot vapor is produced, which is formed from the moisture initially present in the food to be cooked, which is then released to the outside environment depending on the progress of cooking.
  • water vapor steam
  • Such cooking devices are primarily ovens or steam cookers, but also combination devices in which steam, radiant heat and dielectric heating via microwaves are used in combination. If the door of one of the aforementioned devices is opened manually by an operator during the cooking process, the vapor or steam present in the cooking chamber can suddenly escape from the loading opening, which is at least partially cleared as a result, and frighten the operator or lead to impairments such as fogging of eyeglass lenses. For reasons of simplification, only the term steam is used for the following description, even if vapors could be meant.
  • DE 102018 104297 A1 describes a household appliance in which an infrared transmitter and an infrared detector form a proximity sensor that is able to detect a person approaching the appliance.
  • the invention therefore faces the problem of disclosing a method of the type mentioned at the outset and a cooking appliance for carrying out such a method, in which the escape of steam from the loading opening when the door is opened is further reduced.
  • the advantages according to the invention are achieved in a method for cooling the escaping steam from the cooking chamber of a cooking appliance, in particular an oven or steam cooker, the cooking appliance being equipped with a cooking chamber, a door for closing a front loading opening of the cooking chamber, a cooling device for replacing part of the Steam in the cooking chamber by cold air and with a control device for actuating the cooling device by a control command is achieved in that the control command is triggered by the signal or the measured value of a proximity sensor arranged on the cooking appliance, the signal or the measured value from the proximity sensor as a result of an approach a person to the cooking appliance is generated.
  • cooling of the escaping steam means replacing part of the atmosphere in the cooking chamber with cold air before or at the latest when the door is opened.
  • the loading opening is the area that is formed by the front edges of the cooking chamber and is free of a cooking chamber wall.
  • the use of the proximity sensor which triggers the control command and thus starts the cooling device, gives the device, in particular its electromechanical components, sufficient time and opportunity to move into a position in which a significant proportion of the cooking chamber atmosphere is protected against cold air is exchanged before or at the latest when a person as an operator opens the door manually. This can prevent a gush of steam from escaping from the loading opening.
  • the proximity sensor or the control device can be suitable and designed to distinguish an approaching person from a moving object or from an approaching animal.
  • control device initially assumes that every person is approaching and that it is an operator and triggers the control command to actuate the cooling device.
  • Cooling fan or the additional fan is sucked in and the flow line extends at least from the cooling fan or the additional fan to a blow-out/suction opening in the front of the cooking appliance above the cooking chamber;
  • the amount of steam entrained through the first opening from the cooking cavity is significantly increased.
  • the resulting negative pressure ensures that cold air is fed through other openings, first through existing openings or leaks in the cooking chamber, then even more so through the door opened manually by an operator.
  • the cooking chamber atmosphere is cooled down, and the resulting suction effect also reduces the escape of steam from the door gap created by the opening and becoming larger.
  • the increase is achieved by the control device increasing the fan speed.
  • a second cooling fan can be used, which the control device then switches on when a person approaches.
  • a deflection device for example a pivotable bar arranged in the area of the exhaust/suction opening, which in a first position directs the exhaust air flow at least approximately in the direction of the flow line from the Blow-out/intake opening released and, in a second position, deflects the blow-out air flow in the direction of the loading opening.
  • the suction airflow ensures that the steam escaping from the cooking chamber through the door gap, which increases when the door is opened, is directed away from the operator into the flow line.
  • the cooking chamber atmosphere is then quickly permeated with cold air and cooled down.
  • a flow line is advantageously provided, which extends at least from the cooling fan or the additional fan to a blow-out and/or suction opening in the front of the cooking appliance above the cooking chamber.
  • the generation of the intake air flow can advantageously take place by reversing the direction of rotation of the cooling fan by the control device. No further blower then has to be used.
  • this additional fan can also be used to extract cooking vapors that are produced in the area of a hob that is arranged above the cooking chamber, ie in the upper area of the cooking appliance.
  • this additional fan can also be used to extract cooking vapors that are produced in the area of a hob that is arranged above the cooking chamber, ie in the upper area of the cooking appliance.
  • a switching device actuated by the control device is suitable and designed to create a flow connection between the further fan and optionally the further flow line or the create a flow line. In this way, it is possible to switch between an operation for extracting cooking vapors from the cooktop and an operation for extracting steam from the cooking chamber.
  • the enlargement of the first opening in the ceiling already in itself leads to a cooling of the atmosphere in the cooking chamber, because hot steam, following the laws of physics, rises up in the cooking chamber and escapes through the opening.
  • hot steam following the laws of physics, rises up in the cooking chamber and escapes through the opening.
  • cold air is sucked into the cooking chamber and an exchange of atmosphere is supported when the door is opened.
  • the first flap unit can be constructed, for example, as described in DE 102016 121 834 A1.
  • a flow line is arranged above the cooking chamber, which extends to a discharge and/or suction opening in the front of the cooking appliance above the cooking chamber, and if the opening in the ceiling connects the cooking chamber with the flow line fluidically connected.
  • the steam escaping from the cooking chamber can then be mixed with cold air either in the flow line or in a cooling fan (see A.), which prevents it from escaping uncooled elsewhere in the device. 6
  • Cooking chamber wall means a wall of the cooking chamber that is not the ceiling, ie. H. is the wall of the cooking chamber that is at the top in the operating state.
  • the cooking chamber wall can be the floor, one of the side walls and preferably the rear wall of the cooking chamber.
  • Both flap units can advantageously be moved, ie opened and/or closed, by actuators actuated by the control device. It is particularly advantageous if the control unit and the second flap device are set up to release the second opening within a period of less than 5 seconds, in particular less than 3 seconds, in particular a maximum of only 1 second. As a result, rapid cooling can be achieved. It is particularly advantageous if, when the second opening is released via the control device, it switches on a circulating air fan for circulating the air or the steam in the cooking chamber. This results in improved mixing of the cooking chamber atmosphere with cold air.
  • a very simple way of cooling the steam in the cooking chamber before the door is opened by an operator is to have already opened the door to the cooking chamber a little before the operator begins the actual opening process. Then, before the door is fully opened, some of the hot steam has already escaped and this part has been replaced by cold air.
  • the gap-by-gap opening is effected by an automatic opening device which is actuated by the control device when a person approaches.
  • the control device closes the door completely again by means of an automatic closing device if the door opening sensor does not sense an open state of the door that goes beyond a gap within a predetermined period of time after the control command has been triggered by the signal or the measured value of the proximity sensor .
  • Opening and closing devices can advantageously be integrated into a common mechanism, but they can be designed as separate components.
  • the above-described reaction of the control device and the locking device ensures that the door that has been opened is automatically closed again if a person has only accidentally approached the cooking appliance or without intending to open it. It is then prevented that the cooking program is continued with a gap-open door. 7
  • the cooling device is actuated as a function of a control command from the control device in a cooking program only if an operator has previously released it when the cooking program is switched on or during its course via a control device of the cooking appliance.
  • the operator can select that the cooling device is only actuated in programs in which the door is intended to be opened during the course of the program.
  • the proximity sensor is switched on when the operator releases it. In programs in which the proximity sensor is also used for other purposes, non-enabling can be implemented by suppressing triggering of the control command for actuating the cooling device.
  • control device deactivates the cooling device if a door opening sensor does not detect an opening state of the door sensed.
  • a cooking appliance for carrying out one of the above-described embodiments of a method according to the invention in particular an oven or a steam cooker, has a cooking chamber, a door for closing a front loading opening of the cooking chamber, a cooling device for replacing part of the steam in the cooking chamber with cold air , Equipped with a control device for actuating the cooling device as a function of a control command and with a proximity sensor for generating a signal or a measured value as a result of a person approaching the cooking appliance.
  • the control device of the cooking appliance is suitable and set up to carry out the control command for carrying out one of the previously described embodiments of the method. Further advantageous configurations of the cooking appliance are also described above in connection with the embodiments of the method.
  • FIG. 1 shows a perspective view of a built-in oven 11
  • FIGS. 2a to c schematic sketches of first embodiments of a built-in oven 11 according to the invention
  • FIGS. 3a to c show schematic sketches of the first flap unit in different states;
  • FIG. 4 shows a block diagram of the function of a cooling device according to the invention; 8th
  • Figures 5a, b schematic sketches of a part of a built-in oven 11 in a second embodiment (not according to the invention);
  • FIG. 6a schematic sketches of a third embodiment of a built-in oven 11 according to the invention.
  • Figures 6b, c a second flap unit 331 of this embodiment:
  • Figures 7a, b schematic sketches of fourth embodiments of a built-in oven 11 according to the invention.
  • FIG. 1 shows a perspective representation of a cooking appliance 10 according to the invention in the form of a built-in oven 11.
  • This has a cooking chamber 30 (not visible in this figure) with a loading opening 36 on the front (also not visible here) (see, for example, FIGS. 2a, b).
  • the loading opening 36 is closed by a door 40 .
  • a control panel 70 can be seen above the door 40, in which display devices 71, here a display 710, and control devices 72, here a pushbutton 720, are arranged.
  • display devices 71 here a display 710
  • control devices 72 here a pushbutton 720
  • the display and operating devices 71 and 72 can also be combined to form a touch display in a manner different from what is shown in the figure.
  • a slit-shaped exhaust and/or suction opening 83 Between the top edge of the door 40 and the bottom edge of the control panel 70 there extends a slit-shaped exhaust and/or suction opening 83, the function of which will be explained later.
  • a proximity sensor 73 can be seen, which is arranged below the display 710 in the embodiment shown here.
  • the sensor 73 can also be installed at another point in the device 10, but an arrangement in the control panel 70 is advantageous. The function of the sensor 73 will also be explained later. Parts of a door lock 44 can also be seen in FIG.
  • FIGS. 2a to c show schematic sketches, on the basis of which the functions according to the invention of the built-in oven 11 from FIG. 1 are explained in detail.
  • the baking oven 11 has a housing 13 which, as already explained in connection with FIG. 1, surrounds a cooking chamber 30 which is open towards the front.
  • the cooking chamber is delimited by walls, namely a ceiling 31, a floor 32, a rear wall 33 and two side walls 34 and 35.
  • a top heating element 371 and a ring heating element 372 are arranged in the cooking chamber 30 to heat it, under the floor 32 there is another Bottom heating element 376 available.
  • the heat from the ring heating element 372 can be better distributed in the cooking chamber 30 via a circulating air fan 373 and optionally via a shielding plate 374 with openings 375 .
  • Further heating devices 37 such as a microwave heater or a steam generator are not shown in the drawings, but can be provided in addition to the purely radiant heaters 371, 372 and 376.
  • a cooking appliance 10 according to the invention can also 9 can be operated as a microwave oven or as a steam cooker other than in the oven function described above.
  • Radiant heaters 371, 372 and 376 can also be used then, although the use of the individual heating devices 37 (top heat, bottom heat, circulating air heating, microwave, steam) in the programs of these devices 10 will be different than in the built-in oven 11 described.
  • FIGS. 2a to c show a device 10 in which the door 40 is designed to be pivotable about a horizontal axis in the region of the lower edge 401.
  • the door 40 is designed to be pivotable about a horizontal axis in the region of the lower edge 401.
  • the door lock 44 is provided with an integrated automatic opening device 41 which causes the door 40 to open automatically, ie not caused by an operator, by a gap.
  • a gap is understood to mean an opening by a few angular degrees from the fully closed state (hereinafter referred to as closed), such that the shortest measured distance from the upper door edge 403 to the housing 13 is between one and five centimeters. This state of the door 40 is referred to below as gap-open. Any further opening of the door 40 is referred to as open.
  • the automatic opening device 41 can also be integrated elsewhere in the housing 13 and/or the door 40, ie not in the door lock 44.
  • an automatic closing device 42 is also provided, with which the door that has been opened can be closed again in such a way that the gap is at least approximately zero centimeters.
  • a closing device 42 is realized by a spring arrangement, for example in the area of the door hinges (not shown).
  • the automatic opening device 41 can, in particular if it is not integrated into the door lock, be designed as a slide that can be actuated by a motor or otherwise electrically (also not shown).
  • the box 43 indicates the variant in which the door lock 44 and the automatic opening and closing device 41 and 42 are integrated in one assembly.
  • a possible structure and a possible function of such a door lock are disclosed, for example, by the European patent applications EP 3324 124 A1 and EP 3324 125 A1 and are therefore not described in more detail here.
  • a door opening sensor 45 is then also integrated into such a door lock 44 .
  • the door opening sensor 45 recognizes at least the three states “door closed”, “door ajar” and “door open” and is able 10 to give distinguishable signals or measured values to a control device 60, by means of which this can recognize the different opening states and react to them through appropriate programming.
  • FIGS. 2 a to c a first opening 311 is arranged in the cover 31 .
  • An adjustable first flap unit 312 is arranged above the first opening 311, with which the opening cross section can be changed.
  • the first flap unit 312 is shown here as pivotable.
  • the flap unit 312 and its adjustment device (actuator in the form of an electric motor, not shown) will preferably have a structure as known from DE 102016 121 834 A1 and as shown schematically in FIGS. 3a to c. That is, a flap 313 with an integral smaller flap opening 314 will be positioned over the larger first opening 311 and can be slid in a plane parallel to the plane of the opening 311 .
  • a space 80 for electrical and electronic components is partitioned off by a metal sheet 81 , which space is also surrounded by the housing 13 .
  • This space 80 is bounded at the front by the control panel 70, at the top, at the side and at the rear by the walls of the housing 13.
  • the control device 60 which is preferably constructed as a microprocessor control, is arranged in the space. This control device 60 receives measured values and input data, including from the proximity sensor 73 and from the operating device 72, but also from the door opening sensor 45.
  • control commands to control, among other things, the first flap unit 312 and the automatic opening and closing devices 41 and 42, as well as the individual heating devices 37 are switched on and off by the control device 60 directly or via an interposed power unit (not shown).
  • the dashed arrows 61 to the control device 60 symbolize the data lines via which measured values and signals are routed, measured values and signals, the dashed arrows 62 to components symbolize lines via which the control commands are issued by the control device 60 .
  • the measured values and signals themselves are denoted by the reference numeral 61 and the control commands are denoted by the reference numeral 62 .
  • a cooling fan 85 is arranged that the control device 60 both on and off as well as in the 11
  • the cooling fan 85 can be rotated in both directions of rotation and the direction of rotation can be set by the control device 60 .
  • the cooling fan 85 draws in cold air from the vicinity of the cooking appliance 10 through upper openings 132 in the housing 13 and transports this air as a blow-out air flow into the space 80 for electrical and electronic components.
  • the cold air is symbolized by white arrows 21.
  • a large portion of the exhaust airflow is then directed through openings 810 in the panel 81 into a flow duct 82 formed by a gap between the panel 81 and the ceiling 31 of the cooking cavity 30 .
  • individual variants of a method according to the invention for cooling the escaping steam 20 from the cooking chamber 30 by means of a cooling device 65 can be carried out if a corresponding control command 62 from the control device 60 is triggered.
  • the method is initially shown in general terms, ie also for the other embodiments, using a block diagram in FIG. To do this, the controller 60 must receive a signal or a measured value 61 from the proximity sensor 73, from which it recognizes that a person 63 is approaching the sensor 73 and thus the cooking appliance up to a predetermined distance 64 (in the range of 1 to 2 meters). approached 10.
  • the proximity sensor 73 itself can be constructed in such a way that it only generates a signal 61 when this predetermined distance 64 is not reached. However, it can also continuously deliver measured values 61 to the control device 60, the amount of which correlates with the distance 64 from people 63 in the area of the device 10, and the control device 60 then triggers the control command 62 to actuate the cooling device 65 if the amount of the measured value is 61 exceeds a predetermined threshold.
  • the cooling function is not implemented permanently every time the cooking appliance 10 is operated, i.e. in every cooking program (there are programs in which the proportion of hot steam in the cooking chamber 30 is so small that it escapes when the door is opened 40 does not bother; there are also situations in which people often move around while a cooking program is being carried out 12
  • control device 60 recognizes that a person 63 to whom the proximity sensor 73 has reacted does not represent an operator 63 at all in the sense that they are also opening the door 40 .
  • the previously described door opening sensor 45 is provided, which recognizes the three states “door closed", “door ajar” and “door open” and is able to transmit distinguishable signals or measured values 61 to the control device 60, by means of which the control device 60 can recognize the different opening states and react to them.
  • the control device 60 After recognizing that a person 63 is approaching via the signal or the measured value 61 of the proximity sensor 73, the control device 60 counts down a predetermined period of time. If the signal or the measured value 61, which correlates with the open state of the door 40, then fails to appear within this period of time, the control device 60 deactivates the cooling device 65 and the cooking program is continued.
  • the control device 60 first switches on the cooling fan 85 and puts it into operation if this was not the case in the current program. If the cooling fan 85 is then running or if it was already running previously in the program, its speed is increased by the control device 60 compared to the speed of conventional programs. This is easiest to achieve when there are several different speed levels (e.g. high, medium and low) and when the cooling fan 85 is in a cooking program with one 13 is operated at low or medium speed level or even not at all and when it is switched to high speed level for the cooling function.
  • speed levels e.g. high, medium and low
  • the cooling fan 85 and the control device 60 can also be designed to realize stepless changes in speed and then, for the cooling function, to carry out, for example, a percentage increase in speed or an increase in speed by a predetermined speed difference.
  • the blow-out air flow is increased by the increase in rotational speed and the mixing of the hot steam 20 , which emerges from the first opening 311 , with the cold air 21 is thereby increased. More and more hot steam 20 is taken out of the cooking chamber, mixed with cold air 21 and blown out of the opening 83 as warm air 22, which in this case acts as a blow-out opening, see FIG. 2a.
  • the operator 63 then opens the door 40, the steam 20 in the cooking chamber 30 has already been partially replaced by cold air 21 and is therefore cooled down, so that the temperature and thus also the quantity of the steam 20 escaping from the open loading opening is reduced.
  • the first flap unit 312 is set by the control device 60 to the second state, in which the flap 313 is pushed to the side and the first opening 311 in the cover 31 is completely exposed. More hot steam 20 will then emerge from the first opening 311 and escape from the cooking chamber 30 via the flow line 82 and the blow-out opening 83, see also FIG. 2a. As a result, cold air 21 is sucked in via leaks in the cooking chamber 30 and the atmosphere in the cooking chamber 30 is already cooled down when the operator 63 opens the door 40 .
  • the enlargement of the first opening 311 is advantageously combined with an enlargement of the exhaust air flow of the cooling fan 85 (1.1). As a result, on the one hand more steam 20 is sucked out of the cooking chamber, and on the other hand the steam 20 that flows out of the exhaust opening 83 is previously mixed with cold air 21 and cooled.
  • a reversal of the direction of rotation of the cooling fan 85 (meaning the rotor, not shown here, and thus the fan blades of the cooling fan 85, also not shown) when a person 63 approaches in a second direction of rotation by the control device 60 converts the exhaust air flow into an intake air flow .
  • the resulting air flow is shown in FIG. 2c in a cooking appliance 10 with the door 40 partially open.
  • Cold air 21 is conveyed from the area in front of the cooking appliance 10 through the opening 83, which now functions as a suction opening, into the flow line 82.
  • the cold air 21 mixes with the hot steam 20 before the cooking device 10, which emerges from the door 40 opened by the operator 63 and is also sucked in.
  • the warm air resulting from the mixture is conveyed through the flow line 82 and the openings 810 in the plate 81 to the cooling air fan 85 and from there blown to the outside.
  • the steam 20 is not only cooled but also directed away from the operator 63 so that the door 40 can be opened safely.
  • This variant can also be combined with one or more other measures, in particular with the enlargement of the first opening 311 described under 1.2 - then part of the hot steam 20 is also sucked out of the cooking chamber 30 through this and this is already cooled there - and/or particularly advantageous with the gap-by-gap opening of the door 40 described under 1.3 - as a result, before the operator 63 arrives at the appliance 10, part of the steam 20 is sucked out of the cooking chamber via the gap-opened door and replaced by colder air 21.
  • FIGS. 5a and b show a further embodiment of a cooking appliance 10, which is modified in the area of the exhaust/suction opening 83.
  • a strip 84 is pivotably mounted at the front end of the flow line 82, preferably on the plate 81, the underside of which delimits the flow line 82 at the top.
  • the pivot axis 841 of the strip 84 extends parallel to the longitudinal extent of the blowing/suction opening 83 at least approximately over the entire width of the cooking appliance 10.
  • Recesses in the area of the door lock 44 can be provided if necessary (not shown in the figure).
  • the mounting of the bar 84 is designed in such a way that it falls into the position shown in FIG.
  • At least one driver 46 is arranged on the upper edge 403 of the door 40, which is dimensioned in terms of its longitudinal extension 461 such that it engages so far into the pivoting area of the strip 84 that, when the door 40 is closed, it moves the strip 84 in an at least approximately horizontal position Position (inactive position 842) presses, see figure 15
  • the driver 46 should preferably only take up a few millimeters in its transverse extent (not shown, points in the plane of the drawing) so that it only blocks the exhaust/suction opening 83 to a small extent when the door 40 is closed.
  • FIGS. 5a and 5b clearly show how the embodiment works by showing the flow conditions.
  • the bar 84 is pivoted backwards by the driver 46 into its horizontal, inactive position 842.
  • the blow-out air flow generated by the cooling fan 85 can exit through the flow line 82 and out of the blow-out opening 83, essentially unhindered, past the one or more drivers 46.
  • the strip falls into its vertical deflection position 843 and deflects the blown-out air flow downwards after exiting the blown-out opening 83. This forms an air curtain which reduces the outflow of hot steam 20 (see FIGS.
  • FIGS. 6a to c show a further embodiment of a cooking appliance 10 according to the invention with a cooling device 65.
  • a second opening 330 which as can be seen in Figure 6a is preferably arranged in the rear wall 33 of the appliance 10, acts as the cooling device 65 in combination with a second flap unit 331, which is shown in two different views in FIGS. 6b and 6c.
  • the flap unit 331 has a closure plate 332, which moves via a swivel arm 333 by means of an actuator in the form of an electromagnet 334 into two different positions, namely a closed position (shown in Figures 6b and 6c) and an open position (indicated schematically in Figure 6a). can be.
  • the electromagnet 334 is of the 16
  • Switched control device 60 and, as already described above in connection with the other cooling devices 65, is always actuated when the control device 60 detects the approach of a person 63 via the proximity sensor 73.
  • the use of an electromagnet 334 allows very rapid actuation of the swing arm 333 and shutter plate 332 in less than a second.
  • the proximity sensor 73 sends a signal 61 to the control device 60. This then sends a control command 62 to the electromagnet 334, which moves the closure plate 332 via the swivel arm 333 into the open position shown in FIG. 6a. Cold air 21 then flows through the second opening 330 into the cooking chamber 30 and mixes with the hot steam 20 and cools it down.
  • the control device 60 preferably also switches on the circulating air fan 373 if this was not already in operation in the current program, in order to intensify the mixing of the cold air 21 and the hot steam 20 .
  • the flap 313 of the first flap unit 312 is also particularly preferably pushed to the side (see 1.2) and the first opening 311 in the cover 31 is completely exposed, so that the mixture of cold air 21 and hot steam 20 (warm air 22) is even better can flow out of the cooking chamber 30 via the flow line 82 and the exhaust opening 83 and more cold air 21 is drawn in through the second opening 330 .
  • the blow-out air flow of the cooling fan 85 can then also be increased (see 1.1) and the effect described above can be further intensified. Opening the door 40 a little at a time (see 1.3) can also be advantageous.
  • the cooling device 65 is deactivated again when the control device 60 recognizes that the person 63 approaching is not an operator 63 at all.
  • FIGS. 7a and 7b Two different embodiments of cooking appliances 10 are shown in FIGS. 7a and 7b, in which a further blower 121 is present as a cooling device 65, which sucks the hot steam 20 at least partially out of the cooking chamber 30 and replaces it with cold air 21.
  • FIG. 7a shows the first embodiment of the cooking appliance 10 using the example of a built-in oven 11.
  • the fan 121 is integrated into the rear, lower part of the appliance 11 in the space between the rear wall 33 of the cooking chamber and the rear wall 131 of the housing.
  • the suction area 122 is directed into a flow line 821, which in this appliance not only extends from the exhaust/suction opening 83 into the space between the metal sheet 81 and the ceiling 31 of the cooking chamber 30, but also on the back of the appliance in 17 the space between the rear wall of the cooking chamber 33 and the rear wall 131 of the housing.
  • the further fan 121 can also be arranged outside of the built-in oven 11, for example in a base of a kitchen unit (not shown). Then the flow line 821 must be extended by a suction hose or a suction tube (not shown) between the lower opening 133 in the housing rear wall 131 and the suction area 122 of the fan 121 .
  • the blower 121 is switched on/off by the control device 60 and, if necessary, its speed is also controlled.
  • a hob 12 is also provided, which is equipped with a device 120 for extracting cooking vapors.
  • the additional fan 121 is then also a component of this device 120 and can suck off cooking vapors, which are produced in the area of the hob 12 during the Boiling of water and cooking of food occur.
  • the flow line 821 from the blow-out/suction opening 83 to the suction region 122 of the further fan 121, as described in the previous exemplary embodiment (FIG. 7a), is also present.
  • the system 13 of hob 12 and cooking appliance 10 with cooking space 30 can, as shown in FIG. It can then be advantageous if the two flow lines 124 and 821 have a common part
  • a switching device 126 actuated by the control device 60 can preferably be arranged, via which one or the other separate part of the flow lines 124 or 821 can be blocked. In this way, it is ensured that the further fan 121 is only active for the respectively released area.
  • the hob 12 can also be arranged separately from the cooking appliance 10 with the cooking chamber 30, ie not directly above it. Then the flow lines 124, 821 and 125 will be at least partially connected to the further blower 121 via hose/pipe connections. The fan 121 itself can then be installed in a kitchen base, for example.
  • both appliance parts 10 and 12 can have their own control devices 60, but it must then be ensured that these control devices 60 can exchange data to implement the cooling function of a cooling device 65 according to the invention or that the control device 60 of the cooking device 10 can control the components that are responsible for the Realization of such a cooling function are necessary.
  • the additional fan 121 is installed separately from at least one of the hob 12 and cooking appliance 10 devices, there will be data lines or wireless data transmission between the control device(s) 60 and the fan 121 .
  • the proximity sensor 73 sends a signal 61 (not shown) to the control device 60, which is responsible for implementing the cooling function of the cooling device 65 according to the invention. This then gives a control command 62 (not shown) to the additional fan 121 and switches it on (possibly with a preset speed), if it was not already switched on when using the hob 12 to extract cooking vapors, then only the speed can be adjusted. Another control command 62 (not shown) is given to the switching device 126 .
  • the opening 311 can be closed by a controllable first flap unit 312, it is advantageous for the control device 60 to put the flap unit 312 into the second state, in which the flap is pushed to the side and the first opening 311 in the ceiling 31 is completely exposed , see 1.2.
  • a combination with the door 40 being opened ajar, as described under 1.3, is particularly advantageous - as a result, before the operator 63 arrives at the appliance 10, part of the steam 20 is sucked out of the cooking chamber 30 via the gap-opened door 40 and replaced with colder air 21.
  • Switching device 126 can be controlled in such a way that it blocks the flow line 821 between the exhaust/suction opening 83 and the suction area 122 of the further fan 121 and releases the further flow line 124 between the opening in the area of the hob 12 and the suction area 122 of the further fan 121. Such a switchover should also be carried out when the cooling process has ended, which is determined by the control device 60, for example, after a predetermined time has elapsed after the door 40 has been fully opened (detected by the door opening sensor 45).

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electric Ovens (AREA)
  • Commercial Cooking Devices (AREA)
  • Cookers (AREA)

Abstract

L'invention concerne un procédé pour refroidir la buée ou la vapeur (20) s'échappant du compartiment de cuisson (30) d'un appareil de cuisson (10), en particulier d'un four ou d'un four à vapeur, l'appareil de cuisson (11) disposant d'un compartiment de cuisson (30), d'une porte (40) servant à fermer une ouverture de chargement frontale (36) du compartiment de cuisson (30), d'un dispositif de refroidissement (65) pour remplacer une partie de la buée ou de la vapeur (20) se trouvant dans le compartiment de cuisson (30) par de l'air froid (21) et d'un dispositif de commande (60) pour actionner le dispositif de refroidissement (65) par l'intermédiaire d'une instruction de commande (62). Le but de l'invention est de réduire davantage l'échappement de vapeur hors de l'ouverture de chargement lors de l'ouverture de la porte. À cet effet, l'instruction de commande (62) est déclenchée par l'intermédiaire du signal ou de la valeur de mesure (61) d'un capteur de proximité (73) disposé sur l'appareil de cuisson (10), le signal ou la valeur de mesure (61) étant généré(e) par le capteur de proximité (73) lorsqu'une personne (63) s'approche de l'appareil de cuisson (10).
EP22725432.3A 2021-05-11 2022-04-25 Procédé de refroidissement de la vapeur sortant de la chambre de cuisson d'un appareil de cuisson et appareil de cuisson Active EP4337892B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE20215378A BE1029396B1 (de) 2021-05-11 2021-05-11 Verfahren zum Kühlen des austretenden Wrasens oder Dampfs aus dem Garraum eines Gargeräts und Gargerät
PCT/EP2022/060873 WO2022238100A1 (fr) 2021-05-11 2022-04-25 Procédé pour refroidir la buée ou la vapeur s'échappant du compartiment de cuisson d'un appareil de cuisson et appareil de cuisson

Publications (3)

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EP4337892A1 true EP4337892A1 (fr) 2024-03-20
EP4337892B1 EP4337892B1 (fr) 2025-06-18
EP4337892C0 EP4337892C0 (fr) 2025-06-18

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EP22725432.3A Active EP4337892B1 (fr) 2021-05-11 2022-04-25 Procédé de refroidissement de la vapeur sortant de la chambre de cuisson d'un appareil de cuisson et appareil de cuisson

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US (1) US20240230104A1 (fr)
EP (1) EP4337892B1 (fr)
BE (1) BE1029396B1 (fr)
ES (1) ES3033481T3 (fr)
PL (1) PL4337892T3 (fr)
WO (1) WO2022238100A1 (fr)

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DE102023132629A1 (de) 2023-11-23 2025-05-28 Miele & Cie. Kg Gareinrichtung und Verfahren zum Betreiben
DE102023132899B4 (de) * 2023-11-24 2025-08-28 Miele & Cie. Kg Gareinrichtung und Verfahren zum Betreiben

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Also Published As

Publication number Publication date
US20240230104A1 (en) 2024-07-11
EP4337892B1 (fr) 2025-06-18
WO2022238100A1 (fr) 2022-11-17
PL4337892T3 (pl) 2025-10-20
ES3033481T3 (en) 2025-08-04
EP4337892C0 (fr) 2025-06-18
BE1029396A1 (de) 2022-12-07
BE1029396B1 (de) 2022-12-12

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