EP1566594A1 - Process and device for aerating and/or venting a cooking oven - Google Patents

Abstract

The ventilation air is drawn through the hollow door (5) and a duct (9) by the fan (7) and discharged through an opening (12) together with air from the oven (2) interior when the flap valve (85) is open. When the valve is closed during cooking operations the duct (9) is closed and the ventilation reduced.

Description

The invention relates to a method and a device for loading and / or venting a cooking oven.

From DE 199 20 345 C1 discloses a cooking oven is known with a furnace muffle, in the Muffelwandung, preferably the muffle cover, a Wrasenaustrittsöffnung is provided, and arranged with a muffle outside the fan with at least one suction, which is connected to the Wrasenaustrittsöffnung the Muffelwandung, and with at least one blow-out area. Furthermore, at least one fresh air duct which opens into an outer space with one end and opens into the intake area of the blower at one end and at least one discharge duct connecting the blower area with the outer space for discharging the mixture of the vapors sucked out of the cooking space by the blower in its operation provided on the one hand and sucked by the fresh air passage from the outside fresh air on the other hand. The fresh air duct and the diversion duct preferably extend substantially horizontally above the oven muffle and are separated from one another by an air baffle plate. The fresh air channel is arranged below the diversion channel. The fan is preferably a radial fan and arranged above the Wrasenaustrittsöffnung. When the door is closed, the feed opening of the oven muffle is closed and is an outlet opening of the door with the entrance of the fresh air duct in flow communication, so that the fan via the fresh air duct sucks fresh air from the door interior. As a result, an air flow is generated in the door interior from the lower open end of the door up. Furthermore, fresh air is drawn through the door handle through an opening behind it in the door interior and then into the fresh air duct, whereby the door handle is cooled. This ventilation system serves, on the one hand, for cooling the cooking oven and, on the other hand, for removing the vapor from the oven muffle.

DE 198 01 585 A1 discloses a method for cooling the outer environment of a Garofenmuffel, the muffle interior is heated while a feed opening of the open muffle is closed with a door. In this method, air is sucked from an outside space in an intake area below the door, the sucked air is guided around at least part of the oven muffle and the air guided around the oven muffle is at least partially blown into the door interior from above. Part of the air routed around the oven muffle can be directly blown out into the outdoor area in a blow-out area in an upper area or above the door. The door interior comprises an inner space between an inner pane and an intermediate pane of the door and an outer space between an outer pane and the intermediate pane of the door. Above the three panes of the door a handle bar is arranged with a door handle and with three adjacent openings. The two outer openings are downwardly separated by a respective air guide body from the inside of the door, while behind the central opening an air deflecting body (baffle plate) is arranged, which directs a portion of the exiting an air duct cooling air from above into the door interior. This air deflecting body is arranged in continuation of the outer pane, so that the deflected air is mainly conducted into the outer space of the door. As a result, the outer pane of the door is cooled and the temperature is lowered there.

Above the furnace muffle a cooling fan is arranged, the in the intake area below the door cooling air from the outside sucks, then below the oven muffle and behind the oven muffle is led upwards and above the Furnace muffle in the air duct to the blow-out is guided in or above the door. In the muffle blanket If a connection can be provided, via the vapors the muffle interior is discharged into the air duct and blown out of the blow-out area together with the cooling air becomes. The vapor can also be in another place be discharged and not supplied to the cooling air, for example, in a built-in cooker over the associated built-in hob.

The two outer openings in the handle of the door together form the blow-out area through which the cooling air K coming from the air duct, possibly with the vapor, flows out into the outer space. Between the air guide body, which separates the openings from the door interior, and the intermediate disc, a connection area is formed, via which the inner space and the outer space of the door are in fluid communication. In the lower part of the door, the washer protrudes further down than the inner pane. As a result, air can flow upward through thermal convection through the inner space and enter the outer space via the connection area below the air guide body and flow downwards again with the cooling air through this outer space. As a result, a circulating cooling air flow is achieved in the door. The cooling air flowing down through the outer space is sucked back by the fan in the intake area, so that a closed partial cycle of the cooling air is created and cooling air only exits through the handle bar into the outer space. Furthermore, according to DE 198 01 585 A1, a narrow air gap can be formed between the outer pane and the air guide body, via which the connection area between the inner space and the outer space is connected to the outer space. As a result, part of the thermally ascended air can also escape from the door directly into the outer space, so that steam can be removed from the door.

From DE 87 06 668 U1 an oven is known with at least one heat source and a microwave generator for heating the food and with a provided on an overhead muffle Wrasenöffnung. On the Wrasenöffnung a provided with two separated by a partition suction chambers suction housing is placed and in the suction chambers each a fan of a common fan drive is arranged, wherein a suction chamber suction side with the Ofenmuffel and the other suction chamber communicates with the housing space and both suction chambers discharge side in a common discharge channel, wherein the flow path of the housing chamber associated with the suction chamber is separated or separable from the flow path of the other suction chamber by a closure flap.

From DE 28 56 094 C2 a baking and roasting oven is known with a Wrasenabzug in the region of a device for measuring the moisture contained in the withdrawing vapor is arranged, wherein the moisture measuring device is part of a control device, as a function of measured by the measuring device Moisture content adjusted a control of the vapor outlet flap or the speed of the fan motor of a hot air blower for circulating the heating air in the baking and frying room is changed.

DE 35 19 423 C2 discloses a cooking appliance with a closable cooking space, in which a grill element is arranged and the further heating means are assigned, as well as with a cooling fan, from which an air stream flows through the cooking chamber, wherein the air flow through an air damper at the entrance is arranged as a setting depending on the operating mode of the cooking appliance in the intermediate position adjustable by means of a manually operable selector, with the different operating modes and possibly different temperature ranges are adjustable, the adjusting member in the dialing range outgoing from the cooling fan and entering into the cooking chamber the selector for cooking operation by means of thermal radiator in at least one intermediate-open position is adjustable, in which the grill element is turned on.

From EP 0 598 211 A1 an oven, in particular with a pyrolytic self-cleaning, is known, which has a vapor opening in the muffle cover, through which the steam produced in the oven operation is sucked outwards by a blower and blown outwards. The flow cross section of the vapor opening itself or a subsequent flow channel is automatically adjustable by a throttle as a function of temperature and / or humidity of Wrasens.

From DE 199 20 345 C1 discloses a cooking oven is known with a furnace muffle, in the muffle wall, preferably the muffle cover, a Wrasenaustrittsöffnung is provided, and arranged with a muffle outside the fan with at least one suction, which is connected to the Wrasenaustrittsöffnung the Muffelwandung, and with at least one blow-out area. Furthermore, at least one fresh air duct which opens into an outer space with one end and opens into the intake area of the blower at one end and at least one discharge duct connecting the blower area with the outer space for discharging the mixture of the vapors sucked out of the cooking space by the blower in its operation provided on the one hand and sucked by the fresh air passage from the outside fresh air on the other hand. The fresh air duct and the diversion duct preferably extend substantially horizontally above the oven muffle and are separated from one another by an air baffle plate. The fresh air channel is arranged below the diversion channel. The fan is preferably a radial fan and arranged above the Wrasenaustrittsöffnung. When the door is closed, the feed opening of the oven muffle is closed and is an outlet opening of the door with the entrance of the fresh air duct in flow communication, so that the fan via the fresh air duct sucks fresh air from the door interior. As a result, an air flow is generated in the door interior from the lower open end of the door up. Furthermore, fresh air is drawn through the door handle through an opening behind it in the door interior and then into the fresh air duct, whereby the door handle is cooled. This ventilation system serves, on the one hand, for cooling the cooking oven and, on the other hand, for removing the vapor from the oven muffle.

The invention is based on the object, a new Method and a new device for loading and / or venting of a cooking oven.

This object is achieved according to the invention with the features of claim 1 or claim 17.

The invention is based on the consideration, in cooking mode and in pyrolysis operation of a Garofens different air ducts through the door of the oven. In pyrolysis operation The air is sucked in from below and through the door interior headed upstairs and out the door again discharged. Because the air in a room in the area of the floor usually colder than in an area about it, especially over the oven muffle of the oven, and the Air above the oven muffle in pyrolysis mode high temperatures of over 500 ° C particularly strong heated, is thus according to the invention colder air to Cooling the door used to cool the door. In the cooking mode are the temperatures occurring in the oven muffle significantly lower than in pyrolysis and are typically between 100 ° C and 250 ° C, in grill mode sometimes even up to 300 ° C. Therefore, the cooking operation is air from the top into the door and down again into the outside space blown out. The flow direction of the air in the door So in cooking mode is just opposite to the pyrolysis operation. By removing the air or venting through The door in the cooking mode can blow out air on the door standing at the door of the user or even the face as in the prior art reduced or even be completely avoided, which on the one hand the associated Inconvenience and on the other hand the sounds e.g. the fan can be reduced. In pyrolysis mode is against assume that a user person usually will not be in front of the oven for a long time, allowing the blowing out of the hot exhaust air even in a blow-out area can be done above the door, as in the state of the technique.

Advantageous embodiments and further developments of the method and the device emerge from the claim 1 or claim 17 each dependent claims.

FIG 1

ein Garofen mit einer Belüftung in einem Pyrolysebetrieb in einer geschnittenen Seitenansicht,

FIG 2

der Garofen gemäß FIG 1 mit einem Belüftungsbetrieb in einem Garbetrieb,

FIG 3

eine Strömungseinstelleinrichtung für die Strömungskanäle des Garofens gemäß FIG 1 oder FIG 2 in einer vergrößerten geschnittenen Darstellung

jeweils schematisch dargestellt sind. Einander entsprechende Teile und Größen sind in den FIG 1 bis 3 mit denselben Bezugszeichen versehen.The invention will be explained below with reference to exemplary embodiments. Reference is made to the drawing, in whose

FIG. 1

a cooking oven with a ventilation in a pyrolysis operation in a sectional side view,

FIG. 2

the oven according to FIG. 1 with a ventilation operation in a cooking mode,

FIG. 3

a Strömungseinstelleinrichtung for the flow channels of the cooking oven according to FIG 1 or FIG 2 in an enlarged sectional view

are each shown schematically. Corresponding parts and sizes are provided in the Figures 1 to 3 with the same reference numerals.

The cooking oven 2 according to FIG. 1 and 2 comprises a furnace muffle 3 with a loading opening 30 which is closed by a door 5 is. The door 5 is substantially perpendicular to Ground or arranged parallel to gravity and lies while a seal on a housing front 22 of the oven 2, which surrounds the feed opening 30.

The door 5 has according to Figures 1 and 2, an outer pane 50, a Inner disk 51 and two intermediate disks 52 and 53.

Between the outer disk 50 and the washer 52 is an outer space 55 formed between the two Intermediate discs 52 and 53, a middle gap 54th and between the washer 53 and the inner disk 51 an inner space 56. The outer and inner spaces 55 and 56 of the door 5 are via sealing elements or Closures 15 and 16 below and 25 and 26 sealed above. The middle gap 54, however, is above and open at the bottom and serves as a door interior for air guidance.

In an upper area of the door 5, in FIGS. 1 and 2 above the disks 51 to 53, an air guide part 11 is provided, that on an inner side a first passage opening 13 of the door 5, which in a flow channel 81st opens inside the air guide part 11.

In a lower portion of the door 5 is a separate Air guide 19 attached, the one initially above substantially parallel to the outer pane 50 extending and then bent outward flow channel 17 below has, which adjoins the middle gap 54 or this continues and in a second passage opening 14 below the outer pane 50 in the outer space 10 opens. This will, depending on the bend of the flow channel 17 an obliquely or horizontally directed air flow achieved through the second passage opening 14.

Above a muffle ceiling 31 of the oven muffle 3 is a fan 7 arranged, which may be formed in a known manner can, for example, one of an electric drive motor driven impeller or fan roller include and / or designed as a radial fan or axial fan can be.

The fan 7 sucks in the pyrolysis of the cooking oven 2 provided embodiment of the ventilation As shown in FIG 1 air L1 from the door 5 via a suction connected first flow channel 9 and air L2 from a Outside 10 and blows the sucked air through L1 + L2 a pressure side connected second flow channel. 8 towards the front of the device.

The first flow channel 9 opens according to Figures 1 and 2 at the Housing front 22 in an opening, the first passage opening 13 in the air guide part 11 of the door 5 is opposite.

In the embodiment of FIG 1, the fan 7 is a Air flow of fresh air L1 from the exterior 10 of down through the second passage opening 14 of the door 5, through the central gap 54 between the two Washers 52 and 53 in the door 5 upwards, through the flow channel 81 in the air guide part 11 and the first Passage opening 13 from the door 5 and finally by generates the first flow channel 9 to the fan 7 out.

Between an upper outer wall of the air guide part eleventh and the housing front 22 and one above the door 5 arranged Control panel 21 is shown in FIG 1 and 2, a flow channel 82 formed in a blow-out area (blow-out slot) 12 above the outer pane 50 of the door 5 in the outer space 10 opens. In this flow channel 82 opens the second flow channel 8.

Furthermore, according to FIG 1 and 2, a discharge of vapors (Exhaust gases, Gardämpfen) from the interior of the oven muffle. 3 provided via a in the front region of the oven 2 the muffle ceiling 31 provided Wrasenkanal 32, the short before its mouth opens into the flow channel 8.

It will now be shown in FIG 1, the intake air L1 + L2 from the blower 7 blown through the second flow channel 8 and due the injector action is from the air flow L1 + L2 in the pyrolysis process resulting vapors (or exhaust gases) W sucked out of the oven muffle 3. The air / vapor mixture W + L1 + L2 will now flow across the flow channel 82 and the blow-out area 12 discharged into the outer space 10.

In cooking mode of the oven 2, however, a different air flow selected, which is shown in FIG.

For this purpose, by means of a flow adjuster 88, the Flow control in the two flow channels 8 and 9 changed or switched by both flow channels 8 and 9 in each case a front, first portion 8A and 9A and a rear, second portion 8B and 9B, respectively and these subregions 8A, 8B, 9A and 9B fluidically be interconnected differently. The Flow adjuster 88 is except in FIGS 1 and 2 in an enlarged view in Figures 3 and 4 shown. 3 corresponds to the setting or the state the flow adjuster 88 in the cooking mode according to 3 and FIG 4 of the setting or the state in pyrolysis according to FIG. 1

The flow adjuster 88 includes a first closure member 85, which is pivotally mounted in a center is and is in the form of a rotary flap, and a second closure member 86 pivotable at one end is stored and at another end in a closing element 80 engages, as well as one in the partition between the two flow channels 8 and 9 provided opening (or: Flow passage) 84. The closing element 80 is of a Actuator 89 (shown only in Figures 1 and 2) operable, by being outside in a first state according to FIG of the second flow channel 8 is arranged and in a second state shown in FIG 4 down now moves in the flow channel 8 is arranged. The adjusting device 89 may e.g. electromagnetically (e.g., relay, coil) or thermoelectric (e.g., bimetal) or mechanically (e.g. Pushbutton with slider, e.g. on the control panel 21) the Press closing element 80.

In the first state of the flow adjuster 88 according to FIG 3, the closing element 80 by the adjusting device 89 moves out of the flow channel 8 and the first Closing element 85 rotates by its aysmmetric mass distribution and that from the action of gravity resulting torque itself in a position in the one opening in the first closing element 85 a flow passage between the second flow channel 8 and the first flow channel 9 through in the Partition provided opening 84 creates and a continuous Area of the first closing element 85, the first Flow channel 9 closes and in the two sections 9A and 9B separates. At the same time raises the first closing element 85, the second closing element 86 in a transversely through the flow channel 8 extending closing position, in which the second closing element 86 the flow channel. 8 divided into the first portion 8A and second portion 8B. The second closing element 86 has openings on or is smaller than the flow cross-section of the second flow channel 8 to a part of the incoming air as the second airflow L2 in the front forward first portion 8A of the flow channel 8.

The main part of the air flow from the second Flow channel 8 is on the other hand as the first air flow L1 the rear second portion 8 B of the flow channel eighth in the front first portion 9A of the first flow channel 9 passed and then through the passage opening 13th (see FIG 2) introduced into the door. After flowing through the Flow channel 81 in the air guide part 11 and the gap 54 down this first air flow L1 flows through the flow channel 17 and the second passage opening 14th again out into the outer space 10.

According to FIG 2, the vapor W via the Wrasenkanal 32 in the front portion 8A of the flow channel 8 out and with the partial air flow L2 to the outside as an air / vapor mixture W + L2 dissipated. By the door 5, however, flows in the Essentially only pure air L1.

In the second state of the flow adjuster 88 according to FIG 4, the closing element 80 of the adjusting device 89 introduced into the flow channel 8 and thereby pushes the second closing element 86 down, wherein this during the pivoting movement and the first closing element 85 brings in a horizontal open position, so that through the now again through the second flow channel 8 the air flow L1 according to FIG 1 and 4 flow can. The second closing element 86 now closes the Opening 84, so that the second flow channel 8 and the first flow channel 9 separated by the partition again are. Since the closing element 80 has openings or is smaller than the flow cross-section of second flow channel 8, can now according to FIG 1 and 4 of Air flow L1 + L2 flow in the second flow channel 8.

The flow cross sections of the flow channel 81 or the Inlet opening 13 on the one hand and the flow channel 82nd On the other hand, they are coordinated with each other given ratio of the air volumes or volume flows the air flows L1 and L2 is achieved. Preferred is a Ratio between 9: 1 and 7: 3, so a clear greater amount of air L1 through the door than L2 above the Door. The vertically measured height of the outlet opening 12th for the second air stream L2, for example, between 2 mm and 6 mm and the height of the inlet opening 13th for the first air flow L1 between 4 mm and 10 mm. The Width of the openings 12 and 13 can be chosen differently his and / or himself almost over the whole device width or Door width extend.

LIST OF REFERENCE NUMBERS

2

Cooking oven

3

muffle furnace

5

door

7

fan

8, 9

flow channel

10

outer space

11

Air guide

12

blow out

13

inlet opening

14

outlet opening

15, 16

shutter

17

blow-out

20

furnace housing

21

control panel

22

housing front

25, 26

shutter

30

loading port

31

muffle ceiling

32

vapor duct

40

loading port

42

vapor duct

50

outer pane

51

inner pane

52, 53

washer

54

inner space

55

outer space

56

inner space

57, 67

door handle

60

outer pane

61

inner pane

62, 63

washer

64

inner space

65

outer space

66

inner space

72

vapor duct

80

closing element

81, 82

flow channel

85, 86

closing

88

flow adjustment

Claims (34)

A method for loading and / or venting a cooking oven, in particular a household oven comprising at least one oven muffle and a door for closing a feed opening of the oven muffle in a closed state and at least one cooking operation for cooking food in the oven muffle and a pyrolysis for pyrolytic cleaning the furnace muffle, wherein the following process steps are provided: a) in at least one Garbetriebsart air is introduced in an upper region of the door in the closed state in a door interior and passed through the door interior down and discharged in a lower portion of the door in an outdoor space, b) in the pyrolysis mode, air is introduced from an outer space in a lower region of the door into the door interior of the door, led upwards through the door interior and discharged again from the door interior in the upper region of the door. The method of claim 1, wherein the upper portion the door interior in at least one cooking operation with a suction side of at least one fan in flow communication is brought and pyrolysis operation with a print page of the same or at least another fan in flow communication is brought. The method of claim 2, wherein the fan via at least a first flow channel with the upper Area of the door in its closed state in Flow connection is or can be brought. Method according to claim 3, wherein by reversing the Direction of flow or exchange of suction side and Pressure side of the fan, the flow direction of the air in the first flow channel in the at least one cooking operation and the pyrolysis operation opposite to each other is set. Method according to one or more of the preceding Claims, wherein the blower over at least one second flow channel with at least one in the outer space opening blow-out area, preferably in located at the top of the door or above the door is, is in flow communication or bringable is. A method according to claim 5 and claim 3 or claim 4, in which the first flow channel with the suction side the blower is in flow communication or brought is and the second flow channel with the pressure side the blower is in flow communication or can be brought. A method according to claim 6, wherein in the pyrolysis operation the air from the door interior by the blower through sucked the at least one first flow channel and then through the at least one second Flow channel over the blow-out again in the outside space is blown out. Method for loading and / or venting a cooking oven, in particular a household oven, in particular a method according to claim 6 or claim 7, in which a) in at least one cooking operation of the cooking oven by means of a flow adjustment a1) the first flow channel is subdivided into a first subregion, preferably facing the door, and a second subregion, preferably facing the fan, the two subregions of the first flow channel being separated from each other in terms of flow, a2) and a flow connection between the first portion of the first flow channel and the second flow channel is made, preferably wherein the blown from the or a fan air at least partially over the first portion of the first flow channel, preferably to the upper portion of the door and into the door interior being blown out,
and at the b) in a pyrolysis operation of the cooking oven by means of the flow adjusting b1) the separation of the first flow channel is canceled in the two subregions, preferably air from an outside space, preferably through the door interior of the door, is sucked by the first flow channel from the fan, b2) and the flow connection between the first portion of the first flow channel and the second flow channel is interrupted, wherein preferably blown from the or a blower air is at least partially blown over the first flow channel and preferably the or a blow-out in the outer space. The method of claim 8, wherein in the at least a cooking operation a part of blown out by the blower Air over the second flow channel and the blow-out area is discharged into the outside space. The method of claim 9, wherein the ratio the volumes of air delivered, in particular the volume flows, the over the door interior into the outside space discharged air and the over the blow-out area in the outside air discharged in an area of 9: 1 to 7: 3 is set. Method according to one or more of the preceding Claims in which the sucked from the outside space Air before entering the door interior at least part of the exterior of the oven muffle or one adjacent to the exterior of the oven muffle Air guide element is guided along. Method according to one or more of the preceding Claims in which the air from the outside, ' especially when sucking and / or while passing on the outside of the oven muffle or the adjacent one Air guide element and / or before blowing in the door interior and / or before blowing out into the outside, Wrasen from a muffle interior of the oven muffle is supplied. A method according to claim 12 and claim 9, wherein Wrasen with the partial air flow over the second flow channel and the blow-off area is discharged. Method according to one or more of the preceding claims, in which a) the door has at least one first passage opening in its upper area and at least one second passage opening in its lower area, and b) in the at least one Garbetriebsart the air is introduced through the at least one first passage opening in the door interior and is discharged through the at least one second passage opening into the outer space and c) in the pyrolysis mode, the air is introduced from the outer space through the at least one second passage opening in the door interior and is discharged through the at least one first passage opening again from the door interior. Method according to one or more of the preceding Claims in which the door is an outdoor space facing outer pane and one in the closed state the door of the oven muffle facing inner pane and in which as a door interior through which the Air is passed, a gap from the outer pane and the inner pane is limited, and / or a gap from the inner pane or the outer pane on the one hand and between Outer pane and inner pane arranged intermediate disc the door is bounded on the other hand, and / or a gap of two between the inner pane and the outer pane arranged intermediate discs the door is limited is used. Method according to one or more of the preceding Claims in which the oven is at least two Furnace muffles whose feed openings each with a door are closed or closed, includes and where the sucked from the outside Air in the cooking mode and / or in the pyrolysis mode one after the other through the door interiors of both Doors are routed. Apparatus for venting and / or venting a cooking oven, in particular a household oven comprising at least one oven muffle and a door for closing a feed opening of the oven muffle in a closed state and at least one cooking operation for cooking food in the oven muffle and a pyrolysis for pyrolytic cleaning the furnace muffle comprising a) at least one air conveying device, b) which introduces air in at least one Garbetriebsart in an upper region of the door in the closed state in a door interior and leads through the door interior down and discharges in a lower portion of the door in an outdoor space and c) which initiates air in the pyrolysis mode of an outdoor space in a lower region of the door in the door interior of the door, led upwards through the door interior and discharged from the door interior in the upper part of the door. Apparatus according to claim 17, wherein the air conveying means at least one fan with a suction side and a pressure side, wherein the upper Area of the door interior in at least one cooking operation with a suction side of at least one fan in rolysis operation with a pressure side of the same or at least one further fan in fluid communication is brought or is. Apparatus according to claim 18, wherein the blower via at least a first flow channel with the upper area of the door in its closed state is in flow connection or can be brought. Apparatus according to claim 19, wherein the Conveying direction of the blower is reversible or Intake side and pressure side of the blower interchangeable are for adjusting the flow direction of the air in first flow channel in the at least one Cooking operation and pyrolysis operation. Device according to one or more of the claims 17 to 20, where the blower over at least one second flow channel with at least one in the outer space opening blow-out area, preferably in located at the top of the door or above the door is, is in flow communication or bringable is. Apparatus according to claim 21 and claim 19 or Claim 20, wherein the first flow channel with the Suction side of the fan is in flow communication or can be brought and the second flow channel with the pressure side of the blower in fluid communication stands or can be brought. Apparatus according to claim 22, wherein in the pyrolysis operation the blower takes the air out of the door interior sucks through the at least one first flow channel and then through the at least one second flow channel on the blower again blows into the outside space. Device for loading and / or venting a cooking oven, in particular a device according to claim 22 or claim 23, having a flow setting device which a) in at least one cooking operation of the cooking oven a1) subdivides the first flow channel into a first subarea, preferably facing the door of the oven, and a second subarea, preferably facing the fan, wherein the two subareas of the first flow channel are separated from one another by fluidic means, a2) and a flow connection between the first portion of the first flow channel and the second flow channel, preferably wherein the blown by the or a fan air at least partially over the first portion of the first flow channel, preferably to the upper portion of the door and into the door interior, is blown out,
and at the b) in a pyrolysis operation of the cooking oven b1) picking up the separation of the first flow channel into the two subregions, wherein preferably air from an outer space, preferably through the door interior of the door, is sucked in by the first flow channel from the fan, b2) and the flow connection between the first portion of the first flow channel and the second flow channel is interrupted, wherein preferably blown by the or a blower air is at least partially blown over the second flow channel and preferably the or a blow-out in the outer space. Apparatus according to claim 24, wherein the flow adjusting means in the at least one cooking operation a part of the blown air from the fan in the second flow channel forwards to the discharge in the outdoor area in the discharge area. Apparatus according to claim 25, wherein the ratio the volumes of air delivered, in particular the volume flows, the over the door interior into the outside space discharged air and the over the blow-out area in the outside air discharged in an area of 9: 1 to 7: 3 is set. Apparatus according to claim 25 or claim 26, wherein which connected to each oven muffle a Wrasenkanal is for removing vapors from the oven muffle, wherein the Wrasenkanal in the second flow channel between the flow adjustment and the blow-out empties. Device according to one or more of the preceding claims, in which a) the door has at least one first passage opening in its upper area and at least one second passage opening in its lower area, and b) in the at least one Garbetriebsart the air is introduced through the at least one first passage opening in the door interior and is discharged through the at least one second passage opening into the outer space and c) in the pyrolysis mode, the air is introduced from the outer space through the at least one second passage opening in the door interior and is discharged through the at least one first passage opening again from the door interior. Apparatus according to claim 28, comprising at least one Separating element, which forms the second passage opening (s) the door from a suction side of the air conveyor separates. Device according to one or more of the claims 17 to 29 for loading and / or venting a cooking oven with at least two oven muffles, their feed openings each closed by an associated door or closable, with the door interiors the two doors fluidly connected in series or switchable and the air conveyor the sucked air in succession through both door interiors promotes. Device according to one or more of the claims 17 to 30, in which the suction side of the air conveyor or the blower with openings in a housing, in particular, a rear wall of the Garofens is in flow communication. Device according to one or more of the claims 17 to 31, wherein the air conveyor above the or each furnace muffle and / or near the back of the housing is arranged. Device according to one or more of the claims 17 to 32, where the door of the oven is an outdoor space facing outer pane and one in the closed Condition of the door of the oven muffle facing inner pane and in which the door interior, through which the air is directed, from a gap, that of the outer pane and the inner pane is limited, and / or by a gap, the from the inner pane or the outer pane on the one hand and one arranged between outer pane and inner pane Intermediate pane of the door on the other hand limited is, and / or from a gap of two arranged between the inner pane and the outer pane Intermediate windows of the door is limited, formed is. Device according to one or more of the claims 17 to 33 for performing a method after a or more of claims 1 to 16.

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