Food preparation appliance equipped with a hot air cooking system and a stirring blade

Abstract

The food preparation appliance (1) comprises a housing (3); a cooking vessel (5) configured to receive food to be cooked; a cover (6); a control unit (2) configured to control an operation of the food preparation appliance (1) according to a hot air cooking mode and a stirring mode; a hot air cooking system (7) comprising a fan (7.1) configured to generate an air flow and a heater (7.2) configured to heat an air flow generated by the fan (7.1); a stirring blade (8) configured to stir food received in the cooking vessel (5); and a drive system (9) comprising a drive motor (10) and a drive mechanism (11) connected to the drive motor (10), the drive mechanism (11) being configured to rotate the stirring blade (8) in the stirring mode and to rotate the fan (7.1) in hot air cooking mode. Figure 1.

Description

Title of the invention: Food preparation appliance equipped with a hot air cooking system and a stirring blade Technical field

[0001] The present invention generally relates to a food preparation appliance for cooking food according to at least one hot air cooking mode, such as an electric pressure cooker. State of the art

[0002] In a known manner, a food preparation appliance comprises:

[0003] - a housing comprising a receiving housing,

[0004] - a cooking tank arranged in the receiving housing and configured to receive food to cook,

[0005] - a cover configured to occupy a closed position in which the cover prevents access to the cooking tank and an open position in which the cover allows access to the cooking tank,

[0006] - a stirring blade disposed in the cooking tank and configured to stir food received in the cooking tank, and

[0007] - a rotational drive device configured to rotate the blade mixing around a blade rotation axis.

[0008] Such a food preparation appliance makes it possible to ensure mixing of the food received in the cooking tank before and during cooking.

[0009] However, the number of types of cooking, and therefore the number of recipes, which can be made with such a food preparation appliance is limited. Summary of the invention

[0010] The technical problem underlying the invention therefore consists of providing a food preparation appliance which is compact and multifunctional, while allowing food to be cooked using different types of cooking and being able to produce an increased number of recipes.

[0011] To this end, the present invention relates to a culinary preparation appliance comprising:

[0012] - a housing comprising a receiving housing,

[0013] - a cooking tank configured to be arranged in the receiving housing and to receive food to be cooked,

[0014] - a cover configured to occupy a closed position in which the cover prevents access to the cooking tank and an open position in which the cover allows access to the cooking tank,

[0015] - a hot air cooking system arranged at least partly in the cover and configured to generate a flow of hot air over food received in the cooking tank, the hot air cooking system comprising a fan configured to generate an air flow and a heating device configured to heat the air flow generated by the fan,

[0016] - a stirring blade configured to be arranged in the cooking tank and to stir food received in the cooking tank,

[0017] - a control unit configured to control an operation of the food preparation appliance according to at least one hot air cooking mode in which the hot air cooking system is active and a stirring mode in which the stirring blade is active,

[0018] - a drive system configured to rotate the stirring blade around a blade rotation axis at least when the food preparation appliance is in the stirring mode and to rotate the fan around a fan rotation axis at least when the food preparation appliance is in the hot air cooking mode, the drive system comprising a drive motor and a drive mechanism rotationally coupled to the drive motor,

[0019] the control unit is configured to control a rotational drive of the drive motor in a first direction of rotation when the food preparation appliance is in the stirring mode and in a second direction of rotation, which is opposite to the first direction of rotation, when the food preparation appliance is in the hot air cooking mode, and

[0020] the drive mechanism comprises at least one overrunning clutch disposed between the fan and the stirring blade and configured to occupy a coupled state in which the overrunning clutch is capable of transmitting a rotational movement to the stirring blade and an uncoupled state in which the overrunning clutch is incapable of transmitting a rotational movement to the stirring blade, the drive system being configured such that the overrunning clutch is in the coupled state when the drive motor is rotated in the first direction of rotation, i.e. when the food preparation appliance is in the stirring mode, and such that the overrunning clutch is in the uncoupled state when the drive motor is rotated in the second direction of rotation, i.e. when the food preparation appliance is in the hot air cooking mode.

[0021] In other words, the overrunning clutch is configured to rotationally couple the stirring blade to the drive motor when the overrunning clutch is in the coupled state, and to rotationally uncouple the stirring blade from the drive motor when the overrunning clutch is in the uncoupled state.

[0022] By overrunning clutch is meant a mechanical system capable of momentarily interrupting the rotational drive of a driven member which can nevertheless continue to rotate freely.

[0023] Such a configuration of the food preparation appliance allows the rotational drive of several elements, in this case the stirring blade and the fan, by the actuation of a single drive motor. Thus, the food preparation appliance according to the present invention allows the cooking of food according to an increased number of recipes while being compact and of simple design.

[0024] Advantageously, such a configuration of the food preparation appliance makes it possible to carry out, during the same recipe, one or more hot air cooking phases and one or more stirring phases, without needing to open the lid to add or remove the stirring blade for example. Thus, the food preparation appliance according to the present invention has increased ergonomics, and prevents the user from interfering with the food being cooked when switching from the hot air cooking mode to the stirring mode.

[0025] The food preparation appliance may further have one or more of the following features, which may be taken alone or in combination.

[0026] According to one embodiment of the invention, the drive mechanism is configured to transmit a rotational movement to the fan at least when the drive motor is rotated in the second direction of rotation.

[0027] According to one embodiment of the invention, the freewheel coupling comprises an inner ring integral in rotation with the drive mechanism, an outer ring integral in rotation with the stirring blade, and a locking mechanism interposed between the inner ring and the outer ring, the locking mechanism being configured to make the inner ring and the outer ring integral in rotation when the drive motor is rotated in the first direction of rotation, and to allow relative rotation of the inner ring with respect to the outer ring when the drive motor is rotated in the second direction of rotation.

[0028] According to one embodiment of the invention, the outer ring is configured to extend at least partially around the inner ring.

[0029] According to one embodiment of the invention, the fan is configured to extend substantially opposite the cooking tank.

[0030] According to one embodiment of the invention, the heating device is an electric heating resistor.

[0031] According to one embodiment of the invention, the heating device is arranged substantially opposite the cooking tank when the cover occupies the position of closing.

[0032] According to one embodiment of the invention, the heating device is fixed to the cover.

[0033] According to one embodiment of the invention, the electric cooking appliance comprises a heating element configured to heat the cooking tank.

[0034] According to one embodiment of the invention, the control unit is configured to control the heating element and the stirring blade when the electric cooking appliance is in the pressure cooking mode.

[0035] According to one embodiment of the invention, the control unit is configured to control an operation of the drive motor according to a first rotational speed when the food preparation appliance is in the stirring mode, and to control an operation of the drive motor according to a second rotational speed when the food preparation appliance is in the hot air cooking mode, the second rotational speed being higher than the first rotational speed. Thus, the drive system is configured such that, when the food preparation appliance is in the stirring mode, the blade is rotated at a blade rotational speed, and such that, when the food preparation appliance is in the hot air cooking mode, the fan is rotated at a fan rotational speed that is higher than the blade rotational speed.

[0036] According to one embodiment of the invention, the drive motor is a permanent magnet synchronous motor, also called a brushless direct current motor.

[0037] According to one embodiment of the invention, the fan rotation axis coincides with the blade rotation axis when the cover occupies the closed position.

[0038] According to one embodiment of the invention, the drive motor is housed at least partly under the cooking tank.

[0039] According to one embodiment of the invention, the drive motor is housed at least partly inside the cover.

[0040] According to one embodiment of the invention, the drive mechanism further comprises a drive shaft which comprises a first drive portion configured to be rotationally coupled to the stirring blade and a second drive portion configured to be rotationally coupled to the fan.

[0041] According to one embodiment of the invention, the drive shaft is configured to extend substantially vertically when the food preparation appliance rests on a horizontal surface.

[0042] According to one embodiment of the invention, the drive shaft is configured to extend substantially along a shaft rotation axis which coincides with the fan rotation axis and the blade rotation axis when the cover occupies the closed position.

[0043] According to one embodiment of the invention, the food preparation appliance comprises a passage orifice opening into a lower face of the cover, the drive shaft extending through the passage orifice and projecting from the lower face of the cover.

[0044] According to one embodiment of the invention, the drive mechanism extends at least partly into the housing and at least partly into the cover.

[0045] According to one embodiment of the invention, the drive shaft comprises a first drive portion connected to a first angle transmission device itself connected to a second drive shaft connected to the mixing blade; and a second drive portion connected to a second angle transmission device itself connected to a third drive shaft connected to the fan. Advantageously, the first angle transmission device comprises at least one return ball joint, and the second angle transmission device comprises at least one return ball joint.

[0046] According to one embodiment of the invention, the drive shaft comprises a lower coupling portion provided on the first drive portion and configured to be located in the cooking tank, and an upper coupling portion provided on the second drive portion and configured to be located for example in the lid. The upper coupling portion and the lower coupling portion are configured to be coupled to each other, and therefore to be rotationally integral, when the lid is in the closed position and to be rotationally independent when the lid is in the open position.

[0047] According to another embodiment of the invention, the drive mechanism comprises a flexible drive device configured to extend at least into the housing and into the cover.

[0048] According to one embodiment of the invention, the flexible drive device comprises a drive cable extending at least partly inside a flexible sheath, the flexible sheath being configured to allow free rotation of the drive cable. Advantageously, the flexible drive device allows transmission of the rotational movement respectively to the mixing blade and to the fan without requiring prior decoupling of the flexible drive device in order to allow movement of the cover between the closed position and the open position.

[0049] According to one embodiment of the invention, the stirring blade is removable.

[0050] According to one embodiment of the invention, the stirring blade comprises a central hub and at least one blade arm configured to stir food received in the cooking tank.

[0051] According to one embodiment of the invention, the central hub houses the freewheel coupling.

[0052] According to one embodiment of the invention, the cooking tank is removable. Such a configuration of the invention makes it possible, for example, to clean the cooking tank outside the housing.

[0053] According to one embodiment of the invention, the opening position of the lid is stable, and the food preparation appliance is configured such that, when the lid occupies the stable opening position, the center of gravity of the food preparation appliance is located in the housing.

[0054] According to one embodiment of the invention, the food preparation appliance is configured such that, when the cooking vessel is removed from the receiving housing and the lid occupies the stable open position, the center of gravity of the food preparation appliance is located inside the housing.

[0055] According to one embodiment of the invention, the cover is pivotally mounted on the housing about a pivot axis which is substantially horizontal when the housing rests on a horizontal surface.

[0056] According to one embodiment of the invention, the drive mechanism is further configured to transmit a rotational movement to the fan when the drive motor is rotated in the first direction of rotation.

[0057] According to one embodiment of the invention, the drive mechanism further comprises an additional overrunning clutch configured to occupy a coupled state in which the additional overrunning clutch is capable of transmitting rotational movement to the fan and an uncoupled state in which the additional overrunning clutch is incapable of transmitting rotational movement to the fan; the drive system being configured such that the additional overrunning clutch is in the coupled state when the drive motor is rotated in the second direction of rotation, and such that the additional overrunning clutch is in the uncoupled state when the drive motor is rotated in the first direction of rotation.The combination of the overrunning clutch and the additional overrunning clutch allows only the stirring blade to be rotated when the food preparation appliance is in stirring mode, and only the fan to be rotated when the food preparation appliance is in hot air cooking mode.

[0058] Unless otherwise stipulated, the term “substantially” means, in this document, “exactly or to within 10% or to within 10°”. Brief description of the figures

[0059] The present invention will be better understood with the aid of the following description with reference to the appended figures, in which identical reference signs correspond to structurally and / or functionally identical or similar elements.

[0060] [Fig-1] is a schematic sectional view of a food preparation appliance according to a first embodiment of the invention, showing a cover of the food preparation appliance in a closed position;

[0061] [Fig.2] is a schematic sectional view of the food preparation apparatus of [Fig.l] showing the lid in an open position;

[0062] [Fig.3] is a schematic sectional view of a food preparation appliance according to a second embodiment of the invention;

[0063] [Fig.4] is a schematic sectional view of a food preparation appliance according to a third embodiment of the invention;

[0064] [Fig.5] is a schematic sectional view of a food preparation appliance according to a fourth embodiment of the invention. Detailed description

[0065] Figures 1 and 2 represent a food preparation appliance 1, such as an electric hot air cooking appliance or an electric multi-cooker, according to a first embodiment of the invention. The food preparation appliance 1 is configured for cooking food, such as meat, fish, vegetables or others, and comprises a control unit 2 configured to control an operation of the food preparation appliance 1 according to at least one hot air cooking mode and a stirring mode and the operation of which will be detailed below.

[0066] The food preparation appliance 1 comprises a housing 3 comprising a receiving housing 4, and a cooking tank 5 removably arranged in the receiving housing 4 and configured to receive food to be cooked.

[0067] The food preparation appliance 1 further comprises a cover 6 configured to occupy a closed position (see Fig. 1) in which the cover 6 prevents access to the cooking tank 5 and an open position (see [Fig. 2]) in which the cover 6 allows access to the cooking tank 5. According to the embodiment of the invention shown in Figures 1 and 2, the cover 6 is pivotally mounted relative to the housing 3 about a pivot axis which is substantially horizontal when the housing 3 rests on a horizontal surface. [Fig. 1] represents the food preparation appliance 1 in which the cover 6 occupies an open position which is stable.

[0068] The food preparation appliance 1 is more particularly configured such that, when the cover 6 occupies the stable opening position, the center of gravity of the food preparation appliance 1 is located in the housing 3. Such a configuration of the invention makes it possible not to equip the housing 3 with at least one stabilizing foot, and therefore to significantly reduce the size of the food preparation appliance 1 and more particularly its “footprint”.

[0069] The food preparation appliance 1 also comprises a hot air cooking system 7 arranged at least partly in the lid 6 and configured to generate a flow of hot air on the food received in the cooking tank 5 when the food preparation appliance 1 is in the hot air cooking mode. The hot air cooking system 7 comprises a fan 7.1 configured to generate an air flow and a heating device 7.2 configured to heat the air flow generated by the fan 7.1. According to the embodiment of the invention shown in Figures 1 and 2, the heating device 7.2 is an electric heating resistor. In order to achieve efficient cooking of the food present in the cooking tank 5, the heating device 7.2 and the fan 7.1 are respectively arranged substantially opposite the cooking tank 5 when the lid 6 occupies the closed position.

[0070] The food preparation appliance 1 further comprises a stirring blade 8 configured to be arranged in the cooking tank 5 and to stir food received in the cooking tank 5 when the food preparation appliance 1 is in stirring mode. Advantageously, the stirring blade 8 is removable and comprises a central hub 8.1 and at least one blade arm 8.2 configured to stir food received in the cooking tank 5.

[0071] The food preparation appliance 1 further comprises a drive system 9 comprising a drive motor 10, such as a permanent magnet synchronous motor also called a brushless direct current motor, and a drive mechanism 11 coupled in rotation to the drive motor 10 and configured to drive in rotation the stirring blade 8 around a blade rotation axis A1 and the fan 7.1 around a fan rotation axis A2 which is advantageously coincident with the blade rotation axis A1 when the cover 6 occupies the closed position.

[0072] Advantageously, the drive mechanism 11 comprises a freewheel coupling 12 configured to occupy a coupled state in which the freewheel coupling 12 is able to transmit a rotational movement to the stirring blade 8 (in the stirring mode) and an uncoupled state in which the freewheel coupling 12 is unable to transmit a rotational movement to the stirring blade 8 (in the hot air cooking mode). By freewheel coupling is meant a mechanical system capable of momentarily interrupting the rotational drive of a driven organ which can nevertheless continue to rotate freely.

[0073] More particularly, the control unit 2 is configured to control a rotational drive of the drive motor 10 according to a first direction of rotation when the food preparation appliance 1 is in the stirring mode and according to a second direction of rotation, which is opposite to the first direction of rotation, when the food preparation appliance 1 is in the hot air cooking mode. Furthermore, the control unit 2 is configured to control an operation of the drive motor 10 according to a first rotational speed when the food preparation appliance 1 is in the stirring mode, and to control an operation of the drive motor 10 according to a second rotational speed when the food preparation appliance 1 is in the hot air cooking mode, the second rotational speed being greater than the first rotational speed.Such a configuration of the food preparation appliance 1 allows the rotational drive of several elements, in this case the stirring blade 8 and the fan 7.1, by the actuation of a single drive motor 10. Thus, the food preparation appliance 1 according to the present invention allows the cooking of food according to an increased number of recipes while being compact and of simple design. Advantageously again, the presence of the freewheel coupling 12 makes it possible to dissociate the rotation of the fan 7.1 and the rotation of the stirring blade 8 in certain operating modes of the food preparation appliance 1, in particular during a hot air cooking mode.

[0074] In the schematic views shown in Figures 1 and 2, the freewheel coupling 12 comprises an inner ring 12.1 integral in rotation with the drive mechanism 11, an outer ring 12.2 integral in rotation with the stirring blade 8, and a locking mechanism 12.3 interposed between the inner ring 12.1 and the outer ring 12.2. The outer ring 12.2 is configured to extend at least partly around the inner ring 12.1 while the interface between the outer ring 12.2 and the inner ring 12.1 is provided by the locking mechanism 12.3 whose function is to allow relative rotation of the inner ring 12.1 with respect to the outer ring 12.2 when the drive motor 10 is rotated in the second direction of rotation and to make the inner ring 12.1 and the outer ring 12.2 rotationally integral when the drive motor 10 is rotated in the first direction of rotation.

[0075] According to the first embodiment of the invention visible in Figures 1 and 2, the drive motor 10 is housed inside the cover 6 (and above the fan 7.1) and the drive mechanism 11 further comprises a drive shaft 13 configured to connect the fan 7.1 and the mixing blade 8.

[0076] More specifically, the drive shaft 13 comprises a first portion drive shaft 13.1 configured to be rotatably coupled to the inner ring 12.1 of the stirring blade 8 and a second drive portion 13.2 configured to be rotatably coupled to the fan 7.1. The drive shaft 13 is configured to extend substantially vertically when the food preparation appliance 1 rests on a horizontal surface, and has a shaft rotation axis A3 which coincides with the fan rotation axis A2 and the blade rotation axis A1. In addition, the food preparation appliance 1 has a passage orifice 6.1 which opens into a lower face of the cover 6, such that the drive shaft 13 extends through the passage orifice 6.1 and projects from the lower face of the cover 6.

[0077] In order to allow movement of the lid 6 from the closed position to the open position, the drive shaft 13 comprises a lower coupling portion 14.1 provided on the first drive portion 13.1 and configured to be located in the cooking vessel 5 and an upper coupling portion 14.2 provided on the second drive portion 13.2 and configured to be located for example in the lid 6 or in the cooking vessel 5. The lower coupling portion 14.1 and the upper coupling portion 14.2 are configured to be coupled to each other, and therefore to be rotationally integral, when the lid 6 is in the closed position and to be rotationally independent when the lid 6 is in the open position.

[0078] [Fig. 3] represents a food preparation appliance 1 according to a second embodiment of the invention which differs from the first embodiment essentially in that the drive motor 10 is housed under the cooking tank 5, and more particularly substantially opposite the freewheel coupling 12. Such a configuration of the invention makes it possible, among other things, to modify the distribution of masses inside the food preparation appliance 1.

[0079] [Fig. 4] represents a food preparation appliance 1 according to a third embodiment of the invention which differs from the first embodiment essentially in that the drive mechanism 11 extends at least partly in the housing 3 and at least partly in the cover 6. More specifically, the drive shaft 13 comprises a first drive portion 13.1 connected to a first angle transmission device 15.1 itself connected to a second drive shaft 13.3 connected to the stirring blade 8; and a second drive portion 13.2 connected to a second angle transmission device 15.2 itself connected to a third drive shaft 13.4 connected to the fan 7.1. Advantageously, the first angle transmission device 15.1 comprises at least one return ball joint, and the second angle transmission device 15.2 comprises at least one return ball joint.

[0080] Such a configuration of the invention allows the transmission of a rotary movement between the drive motor 10 and respectively the stirring blade 8 and the fan 7.1 without the drive mechanism 11 passing through the cooking tank 5.

[0081] [Fig.5] represents a culinary preparation appliance 1 according to a fourth mode embodiment of the invention which differs from the third embodiment of [Fig.4] essentially in that the drive motor 10 is provided under the cooking tank 5.

[0082] According to an embodiment of the invention not shown in the figures, the drive mechanism 11 comprises a flexible drive device, which is configured to extend at least partly into the housing 3 and at least partly into the cover 6. The flexible drive device may for example comprise a drive cable extending at least partly inside a flexible sheath. The flexible sheath is configured to allow free rotation of the drive cable. Advantageously, the flexible drive device allows transmission of the rotational movement respectively to the mixing blade 8 and to the fan 7.1 without prior decoupling of the flexible drive device when the cover 6 passes from the closed position to the open position.

[0083] According to another embodiment of the invention not shown in the figures, the drive mechanism 11 further comprises an additional freewheel coupling configured to occupy a coupled state in which the additional freewheel coupling is capable of transmitting a rotational movement to the fan 7.1 and an uncoupled state in which the additional freewheel coupling is incapable of transmitting a rotational movement to the fan 7.1.In such a configuration of the food preparation appliance 1, the drive system 9 is configured such that the additional overrunning clutch is in the coupled state when the drive motor 10 is rotated in the second direction of rotation, i.e. when the food preparation appliance 1 is in the hot air cooking mode, and such that the additional overrunning clutch is in the uncoupled state when the drive motor 10 is rotated in the first direction of rotation, i.e. when the food preparation appliance 1 is in the stirring mode. The combination of the overrunning clutch 12 and the additional overrunning clutch makes it possible to rotate only the stirring blade 8 when the food preparation appliance 1 is in the stirring mode, and to rotate only the fan 7.1 when the food preparation appliance 1 is in hot air cooking mode.

[0084] Of course, the present invention is in no way limited to the embodiments described and illustrated which have been given only as examples. Modifications remain possible, in particular from the point of view of the constitution of the various elements or by substitution of technical equivalents, without departing from the scope of protection. of the invention.

Claims

Claims

1. Food preparation apparatus (1) comprising: - a housing (3) comprising a receiving housing (4), - a cooking tank (5) configured to be arranged in the receiving housing (4) and to receive food to be cooked, - a cover (6) configured to occupy a closed position in which the cover (6) prevents access to the cooking tank (5) and an open position in which the cover (6) allows access to the cooking tank (5), - a hot air cooking system (7) arranged at least partly in the cover (6) and configured to generate a flow of hot air on food received in the cooking tank (5), the hot air cooking system (7) comprising a fan (7.1) configured to generate an air flow and a heating device (7.2) configured to heat the air flow generated by the fan (7.1), - a stirring blade (8) configured to be arranged in the cooking tank (5) and to stir food received in the cooking tank (5), - a control unit (2) configured to control an operation of the food preparation appliance (1) according to at least one hot air cooking mode in which the hot air cooking system (7) is active and a stirring mode in which the stirring blade (8) is active, and - a drive system (9) configured to rotate the stirring blade (8) about a blade rotation axis (A1) at least when the food preparation appliance (1) is in the stirring mode and to rotate the fan (7.1) about a fan rotation axis (A2) at least when the food preparation appliance (1) is in the hot air cooking mode, the drive system (9) comprising a drive motor (10) and a drive mechanism (11) rotationally coupled to the drive motor (10), the control unit (2) is configured to control a rotational drive of the drive motor (10) in a first direction of rotation when the food preparation appliance (1) is in the stirring mode and in a second direction of rotation, which is opposite to the first direction of rotation, when the food preparation appliance (1) is in the hot air cooking mode, and the drive mechanism (11) comprises an overrunning clutch (12) arranged between the fan (7.1) and the stirring blade (8) and configured to occupy a coupled state in which the overrunning clutch (12) is capable of transmitting a rotational movement to the stirring blade (8) and an uncoupled state in which the overrunning clutch (12) is incapable of transmitting a rotational movement to the stirring blade (8), the drive system (9) being configured such that the overrunning clutch (12) is in the coupled state when the drive motor (10) is rotated in the first rotational direction, and such that the overrunning clutch (12) is in the uncoupled state when the drive motor (10) is rotated in the second rotational direction.

2. Food preparation appliance (1) according to claim 1, wherein the freewheel coupling (12) comprises an inner ring (12.1) integral in rotation with the drive mechanism (11), an outer ring (12.2) integral in rotation with the stirring blade (8), and a locking mechanism (12.3) interposed between the inner ring (12.1) and the outer ring (12.2), the locking mechanism (12.3) being configured to make the inner ring (12.1) and the outer ring (12.2) integral in rotation when the drive motor (10) is rotated in the first direction of rotation, and to allow relative rotation of the inner ring (12.1) with respect to the outer ring (12.2) when the drive motor (10) is rotated in the second direction of rotation.

3. A food preparation appliance (1) according to claim 1 or 2, wherein the control unit (2) is configured to control an operation of the drive motor (10) according to a first rotational speed when the food preparation appliance (1) is in the stirring mode, and to control an operation of the drive motor (10) according to a second rotational speed when the food preparation appliance (1) is in the hot air cooking mode, the second rotational speed being higher than the first rotational speed.

4. Food preparation appliance (1) according to any one of claims 1 to 3, wherein the drive motor (10) is a permanent magnet synchronous motor.

5. Food preparation apparatus (1) according to any one of the claims- indications 1 to 4, in which the fan rotation axis (A2) is coincident with the blade rotation axis (Al).

6. Food preparation appliance (1) according to any one of claims 1 to 5, wherein the drive motor (10) is housed at least partly under the cooking tank (5).

7. Food preparation appliance (1) according to any one of claims 1 to 5, wherein the drive motor (10) is housed at least partly inside the cover (6).

8. A food preparation appliance (1) according to claim 6 or claim 7, wherein the drive mechanism (11) further comprises a drive shaft (13) which comprises a first drive portion (13.1) configured to be rotatably coupled to the stirring blade (8) and a second drive portion (13.2) configured to be rotatably coupled to the fan (7.1).

9. Food preparation appliance (1) according to claim 8, wherein the drive shaft (13) is configured to extend substantially along a shaft rotation axis (A3) which coincides with the fan rotation axis (A2) and the blade rotation axis (A1) when the cover (6) occupies the closed position.

10. Food preparation appliance (1) according to any one of claims 1 to 7, wherein the drive mechanism (11) extends at least partly into the housing (3) and at least partly into the cover (6).

11. Food preparation appliance (1) according to claim 10, wherein the drive mechanism (11) further comprises a drive shaft (13) which comprises a first drive portion (13.1) connected to a first angle transmission device (15.1) itself connected to a second drive shaft (13.3) connected to the stirring blade (8); and a second drive portion (13.2) connected to a second angle transmission device (15.2) itself connected to a third drive shaft (13.4) connected to the fan (7.1).

12. A food preparation appliance (1) according to claim 13, wherein the opening position of the cover (6) is stable, and wherein the food preparation appliance (1) is configured such that, when the cover (6) occupies the stable opening position, the center of gravity of the food preparation appliance (1) is located in the housing (3).

13. Food preparation apparatus (1) according to any one of the claims- preceding indications, wherein the drive mechanism (11) further comprises an additional overrunning clutch configured to occupy a coupled state in which the additional overrunning clutch is capable of transmitting a rotational movement to the fan (7.1) and an uncoupled state in which the additional overrunning clutch is incapable of transmitting a rotational movement to the fan (7.1), the drive system (9) being configured such that the additional overrunning clutch is in the coupled state when the drive motor (10) is rotated in the second direction of rotation, and such that the additional overrunning clutch is in the uncoupled state when the drive motor (10) is rotated in the first direction of rotation.

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