DE102010036462B4 - Cooking device with fan arrangement - Google Patents

Abstract

Cooking appliance with at least one fan arrangement (100, 200, 300), comprising at least one fan wheel (221, 321) that can be driven by means of at least one drive shaft rotatable about an axis of rotation (D) and at least one wall (105, 205, 305) through which the drive shaft passes in the area of a first opening (217), the fan wheel (221, 321) comprising at least one support disk (101, 201, 301) and on a first surface (115, 215, 315) of the support disk (101, 201, 301) ), facing away from the first opening (217), a multiplicity of fan wheel blades (227, 327) is arranged, the fan wheel (221, 321) furthermore at least regionally in a recess (105, 205, 305) formed in the wall (105). 103, 203, 303), wherein the first surface of the support plate (101, 201, 301) does not protrude from the recess (103, 203, 303) and / or can be finally arranged flush with the wall (105, 205, 305) is characterized by at least one measuring device, by means of which at least two measuring points (225a, 225b) arranged at different radial distances from the axis of rotation can be recorded, whereby at least a portion of a component, preferably a moisture portion, of a gas mixture circulated by means of the fan wheel (221) can be determined in the form of a cooking atmosphere by means of the pressure measured values.

Description

The invention relates to a cooking appliance with at least one fan arrangement, comprising at least one fan wheel that can be driven by means of at least one drive shaft rotatable about an axis of rotation and at least one wall through which the drive shaft passes in the area of a first opening, the fan wheel comprising at least one support disk and on one A plurality of fan blades is arranged on the first surface of the support disk facing away from the first opening, the fan wheel also being able to be arranged at least in some areas in a recess formed in the wall, the first surface of the support disk not protruding from the recess and / or flush can be finally arranged with the wall.

Cooking appliances with a fan arrangement for circulating a cooking space atmosphere are known in principle from the prior art. This is how a cooking device like the one from the EP 1 529 183 A1 is known, used as a combination cooking appliance that enables cooking with hot air and / or steam, for example the Applicant's cooking appliance sold under the manufacturer's name "Self Cooking Center®", with a recess to strengthen the structural strength of a wall, in particular a rear wall of a pressure chamber , is formed within a cooking appliance. This structural strength of the wall, which is increased by the recess, enables a drive unit and the fan wheel, in particular an electric motor, to be fastened directly and in a self-supporting manner to the wall, that is to say can be carried by it.

A fan assembly of a combination of a microwave oven and a gas oven is known from US Pat U.S. 4,211,909 A known.

The EP 1 467 154 A2 discloses a fan chamber of a cooking appliance.

In addition, it is from the prior art, for example that of the generic type DE 42 06 845 C2 , known to determine a proportion of a gas component in a gas mixture that a flow is generated in the gas mixture by means of a rotor and a pressure in the gas mixture is recorded at two, with respect to an axis of rotation of the rotor radially spaced measuring points. Based on the difference between the pressure values measured at the two measuring points and a speed and a radius of the rotor as well as a temperature of the gas mixture, the proportion of water vapor in a passage atmosphere is determined as the proportion of the gas component, with auxiliary blades being attached at regular angular intervals on the rear side of the rotor are.

Another generic cooking device is from the DE 103 30 250 B3 known. This is designed with an interior space that can be closed by a door and is delimited by walls, comprising a cooking chamber and a fan chamber for at least one fan device and a heating device, which is separated from the cooking chamber by an air guide member with at least one suction opening and at least one exhaust opening, with a steaming device and a ventilation device are in operative connection with the interior space, and the humidification device is partially formed in one unit with the ventilation device, which has at least one ventilation pipe, a controllable or controllable flap for optionally connecting the interior space with the outside atmosphere and a connecting member for fastening to one of the walls of the interior space , wherein the humidification device comprises at least one water supply line which opens into the ventilation pipe or the connection member.

Although this method has proven itself in principle, it has been shown that, to a certain extent, there is still a dependency of the measurement on a type and scope of a loading or loading of a cooking chamber of the cooking appliance with items to be cooked. This can be traced back to the fact that with moisture measuring systems constructed in this way, an air vortex behind the rotor or fan wheel is used to determine the density of the medium. In this case, however, in the systems known from the prior art, the position of the vortex and thus the pressure measurement values recorded and the density determined thereby depend heavily on the loading and loading of the cooking space.

It is therefore the object of the present invention to further develop the generic cooking appliance in such a way that the disadvantages of the prior art are overcome. The fan arrangement should be designed in such a way that a dependency of a moisture measurement on a load or loading of the cooking space is reduced, in particular completely avoided.

According to the invention, this object is achieved by at least one measuring device, by means of which pressure measurement values can be recorded at at least two measurement points arranged at different radial distances from the axis of rotation, with at least a portion of a component, preferably a moisture portion, of a gas mixture circulated by means of the fan wheel in the form of the pressure measurement values a cooking atmosphere can be determined.

It is also proposed with the invention that the wall at least partially comprises a side wall and / or rear wall of the cooking appliance, in particular the wall a rear wall and / or Side wall of a pressure chamber, in particular separated from a cooking chamber by means of an air baffle.

It is particularly preferred that the wall and the recess are formed in one piece, the recess is formed in the wall in particular by means of forming, embossing, deep drawing and / or punching, or the wall comprises at least two individual components, preferably the recess by connection, in particular welding, Gluing, soldering, riveting and / or screwing, at least one pot is formed with the wall, preferably in the region of a second opening in the wall, the pot preferably comprising the first opening.

Furthermore, it is proposed with the invention that the recess has a circumferential edge formed in particular by a preferably almost right-angled or rounded edge between the wall and the recess, with the circumferential edge preferably spanning a plane which, in particular, is regionally covered by a main extension surface the wall is spaced apart, and / or the recess has a rear wall running essentially perpendicular to the axis of rotation and / or parallel to at least one area and / or the main extension surface of the wall and / or the plane spanned by the peripheral edge of the recess, in particular the rear wall comprises the first opening.

A cooking appliance according to the invention can also be characterized in that the recess comprises at least one, in particular cylindrical jacket-shaped, side wall, the side wall being essentially perpendicular to at least one area of the wall, preferably the main extension surface and / or in the area of the peripheral edge and / or the rear wall extends, preferably at an angle of 80 ° to 100 °, more preferably from 89 ° to 95 °, even more preferably from 87 ° to 93 ° and most preferably from 89 ° to 91 ° with the wall, in particular in the area of the peripheral edge, and / or encloses the rear wall and / or the side wall runs essentially parallel to the axis of rotation, preferably the side wall at an angle of -10 ° to + 10 °, more preferably -5 ° to + 5 °, even more preferably -3 ° to + 3 ° and most preferably includes from -1 ° to + 1 ° with the axis of rotation.

It is particularly preferred that the side wall and the fan wheel, in particular the support disk, are spaced apart from one another by a gap, in particular the gap at least in some areas, preferably circumferentially around the axis of rotation and / or recess, has a width that is less than a depth of the recess and / or a width of the side wall and / or a width of 3.5 mm or less, preferably less than 3.0 mm, more preferably less than 2.5 mm, even more preferably less than 2.0 mm, most preferred of less than 1.5 mm.

A further development of the invention can be characterized in that the first surface of the support disk faces away from the rear wall and / or faces the main extension surface of the wall and / or the plane spanned by the circumferential wheel and / or the first surface is at the same height as the wall, in particular the peripheral edge of the recess, or runs offset in the direction of the rear wall with respect to the wall and / or the peripheral edge of the recess in the recess.

It is also proposed that the fan wheel comprises at least one auxiliary blade, preferably a plurality of auxiliary blades, in particular arranged at regular angular intervals, on a second surface of the support disk facing away from the fan wheel blades and / or the first surface.

In this embodiment it is particularly preferred that the measuring device has at least two pressure transducers, in particular for recording the pressure readings in the measuring points arranged at different radial distances from the axis of rotation and / or a total pressure of the gas mixture, at least one temperature transducer, in particular for recording at least one temperature of the gas mixture and / or at least one evaluation device, preferably comprised by at least one control and / or regulating device of the cooking appliance, for determining the proportion of the component, in particular based on the pressure measurement values and / or the temperature.

The invention is thus based on the surprising finding that by arranging the support disk within the recess, in particular such that a surface of the support disk on which the fan impeller blades are arranged, flush with the wall or an edge between the recess and the wall is and / or closes, is arranged, the loading dependency of a moisture measurement can be significantly reduced. In the context of the invention, a depression is defined as the area between the rear wall and an edge in which a side wall of the depression merges into the wall. Here, a transition of the side wall into the wall is understood to mean that, starting from the first opening through which the drive shaft passes, the rear wall is followed in the radial direction of the axis of rotation and then the side wall is followed. The transition into the wall from the edge is then the point at which the side wall runs in a direction which a main extension plane or a main extension surface of the wall is parallel or tangent to this. Here, the main extension surface can be flat, that is to say represent a main extension plane, or else have an elliptical, parabolic, spherical or arched shape. The invention is based on the knowledge that, in contrast to fan arrangements known from the prior art, the fact that, depending on a load, the sucked gas mixture, in particular the sucked cooking atmosphere, flows asymmetrically into a fan wheel, in the embodiment according to the invention the asymmetrical intake and the resulting asymmetrical outflow on the outer edge of the fan wheel, on the outer wheel of the support disc, which is also referred to as a circular blank, no asymmetrically distributed over the circumference of the support disc due to the pressure equalization in the gap area or the lack of a flow break in this area Negative pressure results, so that a vortex formed behind the support disk is not deformed.

This situation known from the prior art is in 1a shown. It shows 1a a cross-sectional view of a fan assembly according to the prior art. As 1a can be seen, is a support disc 1 a fan wheel, not shown, outside of a recess 3 that are in a wall 5 is formed, arranged. In the edge area of the support disc 1 formed by a current S. a vacuum area 7th . This negative pressure area 7th causes by one between the support disc 1 and the deepening 3 or the wall 5 formed gap 9 a change in the flow conditions between a rear wall 11 the deepening 3 and the support disc 1 entry. Through this negative pressure area 7th becomes one in the gap 13th formed vortex, which is used for moisture measurement, deformed. This asymmetrical deformation of the vortex creates a load-dependent error in the moisture measurement.

Based on this knowledge, the invention proposes that the fan wheel is inserted into the recess in such a way that a front plane of the support disk continues at the same level with the wall or the edge of the recess, i.e. flush with the wall and / or the edge of the recess closes, the front plane of the support disk so in particular in the same plane as the wall surface or a main extension surface of the wall or a plane spanned by a peripheral edge of the recess, which is preferably offset from the main extension surface. This offset can be achieved by an increase in the area of the peripheral edge relative to the main extension surface and ensures that, even with component tolerances, the support plate is always arranged within the recess and enables a space-saving structure, since otherwise the recess would be deeper in relation to the main extension surface would have to be able to accommodate the support disc completely in the recess.

The recess is designed in such a way that the side wall of the recess connecting the rear wall of the recess and the wall opens into the wall in such a way that the side wall is essentially perpendicular to the plane of the support disk or perpendicular to the main extension surface of the wall or the orientation of the Wall runs in the peripheral edge and edge area between the recess and the wall. This achieves in particular that the flow, which flows off from the fan wheel in a radial direction, runs perpendicular to the side wall of the recess. This configuration of the recess according to the invention has the effect that a dynamic pressure is formed on the essentially perpendicular side surface which compensates for the negative pressure at the edge of the support disk. Since the negative pressure and the dynamic pressure are caused locally by the same flow, this compensation is also local, so that despite an asymmetrical flow, there is no longer any influence on the vortex behind the fan wheel. In order to achieve the best possible results, the gap between the edge of the support disk and the edge of the recess or side wall should be as small as possible compared to the depth of the gap, i.e. the depth of the recess, so that compensation is as complete as possible.

• - ein Winkel am Rand der Vertiefung in Übergang zu der Wand als auch ein Übergang zwischen der Rückwand und der Seitenwand können abgerundet werden; und
• - die Seitenwand kann in einem von einem rechten Winkel abweichenden Winkel, insbesondere mit einer Abweichung von +/- 10°, besser von +/- 5°, noch besser +/- 3° und am besten +/- 1° in die Wand übergehen.

In addition, it was recognized that deviations from this ideal constellation can be made to a certain extent, in particular an edge geometry that is suitable, in particular for the expansion of the recess by deep drawing, is formed in the corner area between the wall and the recess, in particular the side wall of the recess and the wall can be without the result according to the invention being significantly influenced. In particular, in order to simplify the production of the recess, the following deviations from an ideal geometry can be provided:

• - An angle at the edge of the recess in the transition to the wall and a transition between the rear wall and the side wall can be rounded; and
• - The side wall can be at an angle deviating from a right angle, in particular with a deviation of +/- 10 °, better of +/- 5 °, even better +/- 3 ° and best of all +/- 1 ° into the wall pass over.

It was found that these geometrical changes have a comparatively small influence on the result according to the invention compared to a protrusion of the support disk from the plane of the wall or the recess. A further sinking of the fan wheel into the recess affects the compensation only slightly, while the dynamic pressure almost completely disappears when the plane of the support disc lies in front of the plane of the wall or protrudes from the recess.

A slight inclination of the fan wheel to the wall plane in the sense that the plane of the support disk is inclined to the main plane of the main extension surface of the wall, in particular in the area of the recess, has only a comparatively small effect on the pressure compensation as long as the support disk is not or only protrudes slightly from the recess. So even a slight misalignment of the fan wheel can ensure sufficient compensation as long as the fan wheel dips deeper into the recess.

In summary, it is achieved by the invention that a load-dependent moisture measurement is made possible despite the asymmetrical flow through the fan wheel due to the asymmetrical loading or loading of the cooking appliance. The compensation is achieved in a structurally simple manner and e.g. complex devices for rectifying a flow at a suction opening of the fan wheel avoided. In particular, no additional costs are caused by the invention compared to such rectifying devices, no impairment of the conveyed volume flow is achieved, and no additional element which is problematic with regard to contamination, in particular difficult to clean, is inserted and compared to such Rectifying devices achieved a higher degree of uniformity.

Further features and advantages of the invention emerge from the following description, in which exemplary embodiments of the invention are explained with reference to schematic drawings.

• 1a eine schematische Teilquerschnittsansicht einer Lüfteranordnung gemäß dem Stand der Technik;
• 1b eine schematische Teilquerschnittsansicht einer Lüfteranordnung gemäß der Erfindung;
• 2 eine Querschnittsansicht einer weiteren erfindungsgemäßen Lüfteranordnung;
• 3 eine Detailansicht des Ausschnitts A der 2;
• 4 eine perspektivische Querschnittsansicht des Ausschnitts A der 2; und
• 5 eine Teilquerschnittsansicht einer weiteren Ausführungsform einer erfindungsgemäßen Lüfteranordnung.

It shows:

• 1a a schematic partial cross-sectional view of a fan arrangement according to the prior art;
• 1b a schematic partial cross-sectional view of a fan assembly according to the invention;
• 2 a cross-sectional view of a further fan arrangement according to the invention;
• 3 a detailed view of the cutout A. the 2 ;
• 4th a perspective cross-sectional view of the cutout A. the 2 ; and
• 5 a partial cross-sectional view of a further embodiment of a fan arrangement according to the invention.

In 1b Figure 3 is a schematic partial cross-sectional view of a fan assembly 100 a cooking device according to the invention shown. The fan arrangement 100 includes a fan of the in 1b just a support disc 101 is shown. The fan arrangement 100 also includes a specialization 103 that are in a wall 105 , in particular in a rear wall of a pressure chamber of a cooking appliance. By means of the fan wheel, a cooking atmosphere is circulated in such a way that a flow S ' the cooking atmosphere is generated by the fan wheel. By the current S ' is in the area of the edge of the support disc 101 a vacuum area 107 generated. As previously described, the flow causes S ' in addition, that in the area of a transition from the recess 103 to the wall 105 an overpressure area due to dynamic pressure 108 is produced. Through this overpressure area 108 becomes the negative pressure in the area 107 compensated, so that essentially a pressure equilibrium results in this area, especially in a gap 109 between the support disc 101 and a side wall 110 the deepening 103 . A vortex between the support disk 101 and a back wall 111 the deepening 103 in a space 113 , especially supported by the arrangement of auxiliary blades on the support disc 101 on the side that is the back wall 111 facing, is generated, is thus created by in the gap 109 prevailing pressure conditions are not influenced, in particular not asymmetrically deformed.

This is due to the fact that a level 115 the surface of the support disc 101 inside the recess 103 is arranged, in particular in the same plane as the wall 105 lies. As in the sense of the invention, the recess 103 than the area between the back wall 111 and the point where the side wall 110 an edge with the wall 105 forms, especially the side wall 110 so in the wall 105 passes over, is defined, and the level 115 with the main extension area H that is a wall in this area 105 represents, coincides, is thus the support disc 101 according to the invention within the recess 103 arranged.

In 2 is another fan assembly according to the invention 200 shown. Those elements of the fan assembly 200 that functionally match those of the fan assembly 100 correspond to have the same reference numerals, but by the same amount 100 elevated.

As 2 can be seen is the deepening 203 integral with the wall 205 formed, in particular by means of deep drawing in the wall 205 educated. It is in the wall 205 in the area of the recess 203 a first opening 217 through which a drive shaft that is driven by an electric motor, not shown, and with a hub 219 of the fan wheel 221 is connected, formed. This enables a rotation or rotation of the fan wheel 221 around an axis of rotation D. . In alternative embodiments, not shown, it can be provided that the recess 203 is designed as a separate component, especially in the wall 205 a second opening is provided in which the recess 203 , for example in the form of a pot, is attached by welding.

How beyond 2 can be found on the support disc 201 of the fan wheel 221 in the area of the gap 213 Auxiliary shovels 223 arranged. When the fan wheel rotates 221 around the axis of rotation D. is, by auxiliary shovels 223 supported, in the space 213 A vortex is created that allows the portion of a component to flow through the fan wheel 221 circulated gas mixture, in particular a moisture, is determined in that at two at different radial distances from the axis of rotation D. arranged measuring points, for example the measuring points 225a and 225b , a pressure measurement is made and from the pressure difference and the speed of rotation of the fan wheel 221 the moisture content is determined. On that of the depression 203 facing away from the fan wheel 221 are on the support disc 201 Fan impeller blades 227 , the particular separation devices 229 for particles entrained in the gas mixture, in particular liquid particles, are arranged.

In 3 is a detailed view of the section A. the 2 shown. As 3 can be seen is in the transition area between the recess 203 and the wall 205 an edge 231 educated. Compared to the in 1 b fan arrangement shown 100 goes both the back wall 211 over a rounded edge 233 in the side wall 210 across, as well as the side wall 210 over the rounded edge 231 into the wall 205 . In the sense of the present invention, the depression extends 203 from the back wall 211 over the side wall 210 to the point where the side wall 210 so in the edge 231 that passes over a tangent E. the side wall 210 in a direction parallel to a main extension surface H 'of the wall 205 runs. Thus the recess extends 203 over the depth t so from the back wall 211 to the point of the edge 231 in which the side wall 210 into the wall 205 in the sense that it passes over a tangent E. at this point or surface area of the edge 231 parallel to a main extension surface H 'of the wall 205 runs. The by an increase relative to the main extension surface or plane H 'in the area of the edge 231 trained offset between the tangent E. and the main extension area H 'represents in comparison to the fan arrangement 100 , in which the edge or the peripheral edge of the recess in the main extension surface or plane of the wall 105 lies, sure that the support disc 201 is always arranged within the recess. As 3 In particular, it can be seen that the support disc 201 , namely thus reliably within the recess 203 arranged as the plane 215 below the plane H 'and the tangent E. inside the recess 203 lies. In the fan assembly 100 and 200 are the main extension areas H or H 'planes. In other, non-illustrated embodiments, it can also be provided that the main extension surfaces are arched, in particular are parabolic, spherical segment-shaped or elliptical-shaped at least in certain areas.

In 4th Figure 3 is a cross-sectional perspective view of the cutout A. the 2 shown. As 4th can be seen in particular, is by deep drawing the recess 203 and the formation of the back wall 211 , the side wall 210 , the edge 233 , and the edge 231 a reshaping of the area 235 he follows. This transformation 235 the depression runs around the area 203 and leads to an additional reinforcement or stiffening of the wall 205 in the area of the transition into the depression 203 over the edge 231 is designed to provide a self-supporting attachment of a fan motor to the recess 203 in the area of the opening 217 without any additional deformation of the wall 205 to enable.

In 5 Finally, FIG. 3 is a partial cross-sectional view of a further embodiment of a fan arrangement according to the invention 300 shown. The elements of the fan assembly 300 that functionally match those of the fan assembly 200 correspond to have the same reference numerals, but by the same amount 100 elevated.

As 5 can be seen, the recess 303 a depth t 'resulting from the distance of the tangent E' to the rear wall 311 results. The tangent E 'is again defined as the area of the edge 331 in which the side wall 310 like that in the wall 305 goes over that the tangent is parallel to a main extension surface H ″ of the wall 305 extends. Both the edge 333 as well as the edge 331 are rounded and how 5 can still be seen, the side wall runs 310 at an angle α relative to the tangent E '. The angle is preferably α 90 °, but it was found that an angle of 93 ° can also be tolerated; in particular, a deviation from a right angle results in the production of the recess 303 made easier by deep drawing without affecting the pressure conditions in the gap 309 change negatively.

The features disclosed in the above description, in the claims and in the figures can be essential for the invention in its various embodiments both individually and in any combination.

List of reference symbols

1

Support disc

3

deepening

5

wall

7th

Vacuum area

9

gap

11

Back wall

13

Space

100

Fan arrangement

101

Support disc

103

deepening

105

wall

107

Vacuum area

108

Overpressure area

109

gap

110

Side wall

111

Back wall

113

Space

115

level

200

Fan arrangement

201

Support disc

203

deepening

205

wall

209

gap

210

Side wall

211

Back wall

213

Space

215

level

217

opening

219

hub

221

Fan wheel

223

Auxiliary shovel

225a, 225b

Measuring point

227

Fan impeller blade

229

Separation device

231

Edge

233

Edge

235

Area

300

Fan arrangement

301

Support disc

303

deepening

305

wall

309

gap

310

Side wall

311

Back wall

313

Space

315

level

321

Fan wheel

323

Auxiliary shovels

327

Fan impeller blade

329

Separation element

331

Edge

333

Edge

A.

Cutout

D.

Axis of rotation

S, S '

flow

E, E '

tangent

H, H ', H' '

Main extension area

t, t '

depth

b

width

α

angle

Claims (9)

Cooking appliance with at least one fan arrangement (100, 200, 300), comprising at least one fan wheel (221, 321) that can be driven by means of at least one drive shaft rotatable about an axis of rotation (D) and at least one wall (105, 205, 305) through which the drive shaft passes in the area of a first opening (217), the fan wheel (221, 321) comprising at least one support disk (101, 201, 301) and on a first surface (115, 215, 315) of the support disk (101, 201, 301) ), facing away from the first opening (217), a multiplicity of fan wheel blades (227, 327) is arranged, the fan wheel (221, 321) furthermore at least regionally in a recess (105, 205, 305) formed in the wall (105). 103, 203, 303) can be arranged, the first surface of the support disk (101, 201, 301) not from the Depression (103, 203, 303) protrudes and / or can be arranged flush with the wall (105, 205, 305), characterized by at least one measuring device, by means of which at at least two measuring points (225a, arranged at different radial distances from the axis of rotation) 225b) Measured pressure values can be recorded, wherein at least a portion of a component, preferably a moisture portion, of a gas mixture circulated by means of the fan wheel (221) can be determined in the form of a cooking atmosphere by means of the pressure measured values. Cooking appliance Claim 1 , characterized in that the wall (105, 205, 305) comprises a side wall and / or rear wall of the cooking appliance. Cooking appliance Claim 1 or 2 , characterized in that the wall (105, 205, 305) and the recess (103, 203, 303) are formed in one piece, the recess (103, 203, 303) being formed in the wall (105, 205, 305) , or the wall (105, 205, 305) comprises at least two individual components, the recess being formed by connecting at least one pot to the wall. Cooking appliance according to one of the preceding claims, characterized in that the recess (103, 203, 303) has a circumferential edge, a plane (E, E ') being spanned by the circumferential edge which is partially covered by a main extension surface (H', H " ) the wall is spaced apart, and / or the recess (103, 203, 303) is perpendicular to the axis of rotation (D) and / or parallel to at least one area and / or the main extension surface (H, H ', H ") of the wall (105, 205, 305) and / or the rear wall (111, 211, 311) extending through the peripheral edge of the recess (103, 203, 303) spanned plane (E, E '). Cooking appliance according to one of the preceding claims, characterized in that the recess (103, 203, 303) comprises at least one side wall (110, 210, 310), the side wall (110, 210, 310) having an angle (α) of 80 ° up to 100 ° with the wall (105, 205, 305) and / or the rear wall (111, 211, 311), and / or the side wall forms an angle of -10 ° to + 10 ° with the axis of rotation (D). Cooking appliance Claim 5 , characterized in that the side wall (110, 210, 310) and the fan wheel (221, 321) are spaced from one another by a gap (109, 209, 309). Cooking device according to one of the Claims 4 to 6th in the variant with the rear wall, characterized in that the first surface (115, 215, 315) of the support plate (101, 201, 301) faces away from the rear wall (111, 211, 311) and / or the main extension surface (H ', H '') facing the wall (105, 205, 305) and / or the plane (E, E ') spanned by the circumferential wheel, and / or the first surface (115, 215, 315) at the same height as the wall ( 105, 205, 305) or in the direction of the rear wall (111, 211, 311) with respect to the wall (105, 205, 305) and / or the peripheral edge of the recess (103, 203, 303) offset in the recess (103, 203, 303). Cooking appliance according to one of the preceding claims, characterized in that the fan wheel (221, 321) is located on a second surface of the support disk (101, 201, facing away from the fan wheel blades (227, 327) and / or the first surface (115, 215, 315). 301) comprises at least one auxiliary blade (223, 323). Cooking appliance according to one of the preceding claims, characterized in that the measuring device comprises at least two pressure measurement transducers, at least one temperature measurement transducer and / or at least one evaluation device for determining the proportion of the component.

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