阅读说明：本技术 用于处理食品制备物的便携式家电设备及其壳体 (Portable household appliance for processing food preparation and housing thereof ) 是由 蒂鲍特·卢卡斯 斯特凡·格拉锡 于 2019-07-12 设计创作，主要内容包括：本发明涉及一种用于处理食品制备物的便携式家电设备及其壳体。壳体包括：沿轴线X1延伸的细长形状的主体；布置在主体内的电动机；驱动头,由电动机驱动旋转并且设置成驱动至少一个旋转工具旋转,如果需要,通过传动装置；至少一个吸入口,布置在主体的与驱动头的位置相对的端部；至少一个排出口,布置在主体的轮廓上,在电动机的位置和驱动头的位置的中间位置处。根据本发明,壳体包括轴流式通风器,轴流式通风器迫使通过至少一个吸入口进入的新鲜空气朝至少一个排出口的方向循环,同时通过电动机,轴流式通风器位于至少一个吸入口和电动机之间。(The present invention relates to a portable household appliance for treating food preparations and a housing thereof. The housing includes: an elongated-shaped body extending along an axis X1; a motor disposed within the body; a drive head driven in rotation by the motor and arranged to drive in rotation at least one rotary tool, if necessary via a transmission; at least one suction port disposed at an end of the main body opposite to the position of the driving head; at least one discharge port is disposed on the contour of the main body at a position intermediate the position of the motor and the position of the drive head. According to the invention, the housing comprises an axial fan which forces fresh air entering through the at least one suction opening to circulate in the direction of the at least one discharge opening, while passing through the electric motor, the axial fan being located between the at least one suction opening and the electric motor.)

1. A housing for a portable household appliance for processing a food preparation, the housing comprising:

an elongated-shaped body (2) extending along an axis X1;

an electric motor (3) arranged within the body (2);

a drive head (5) driven in rotation by said electric motor (3) and arranged to drive in rotation at least one rotary tool (8), if necessary by means of a transmission;

at least one suction inlet (11) arranged at an end (2b) of the body (2) opposite to the position of the drive head (5);

at least one discharge opening (13) arranged on the contour (14) of the body (2) at a position intermediate of the position of the motor (3) and the position of the drive head (5),

characterized in that the casing comprises an axial ventilator (12), the axial ventilator (12) being configured to force fresh air entering through the at least one suction inlet (11) to circulate in the direction of the at least one discharge outlet (13) while passing through the electric motor (3), the axial ventilator (12) being located between the at least one suction inlet (11) and the electric motor (3).

2. The casing according to claim 1, characterised in that the main body (2) has an upstream compartment (18a) communicating with the at least one suction inlet (11) and a downstream compartment (18b) communicating with the at least one discharge outlet (13), and in that the downstream compartment (18b) houses the electric motor (3), and in that the axial ventilator (12) is arranged in a channel connecting the upstream compartment (18a) to the downstream compartment (18 b).

3. The housing according to claim 2, characterized in that the main body (2) has ribs (15) surrounding the axial fan (12).

4. The casing according to any one of claims 2 or 3, characterised in that the downstream compartment (18b) is delimited by a bottom wall (19), the bottom wall (19) being traversed by a drive shaft (4), the drive shaft (4) connecting the electric motor (3) to the drive head (5).

5. Housing according to claim 4, characterized in that a space (19a) extends between the electric motor (3) and the bottom wall (19), and in that the at least one discharge opening (13) is arranged at said space (19 a).

6. The casing according to any one of claims 1 to 5, wherein the axial ventilator (12) has a peripheral edge (12c) surrounding radial blades (12b), the radial blades (12b) extending from a hub (12a), the hub (12a) being driven in rotation along the axis X1 by the electric motor (3).

7. The housing according to any of claims 1 to 6, characterized in that the housing comprises a radial fan (30), the radial fan (30) being configured to discharge heated air from the body (2) through the at least one discharge opening (13).

8. The housing according to claim 7, characterized in that the radial fan (30) is located at the at least one outlet opening (13).

9. The housing according to any of claims 7 or 8, characterized in that the radial ventilator (30) comprises radial blades (31), the radial blades (31) being driven in rotation along the axis X1 by the electric motor (3).

10. The housing according to any one of claims 1 to 9, wherein the electric motor (3) is configured to drive the drive head (5) in rotation along the axis X1.

11. The housing according to any one of claims 1 to 10, characterized in that the at least one suction opening (11) is arranged on a cover (10) of the body (2), the cover (10) being disposed opposite the drive head (5).

12. The housing according to claim 11, characterized in that the at least one suction opening (11) is arranged such that the entry of fresh air through the at least one suction opening (11) takes place axially along the axis X1.

13. The housing according to any one of claims 1 to 12, characterized in that the main body (2) comprises at least one grip area (16) arranged in the vicinity of the at least one suction opening (11).

14. The casing according to any one of claims 1 to 7, characterized in that the portable household appliance for processing food preparations is of the mixer or whisk type.

15. A portable household appliance for the treatment of food preparations, comprising a casing (1) according to any one of claims 1 to 13, characterized in that it comprises a mixer foot (7), said mixer foot (7) lengthening a main body (2) along an axis X1, said mixer foot (7) being removably assembled with said main body (2), said mixer foot (7) comprising at least one rotating tool (8), said mixer foot (7) comprising a transmission connected to said at least one rotating tool, said drive head (5) being able to drive said transmission in rotation when said mixer foot (7) is assembled with said main body (2).

16. A portable household appliance for the treatment of food preparations, comprising a casing (1) according to any one of claims 1 to 13, characterized in that it comprises an accessory head (26), said accessory head (26) extending a main body (2) along an axis X1, said accessory head (26) being removably assembled with said main body (2), said accessory head (26) housing at least one rotating tool (8), said accessory head (26) comprising a transmission connected to said at least one rotating tool, said transmission being able to be driven in rotation by a drive head (5) when said accessory head (26) is assembled with said main body (2).

17. A portable household appliance for processing food preparations, comprising a casing (1) according to any one of claims 1 to 13, characterized in that it comprises at least one rotating tool (8) coupled to a driving head (5).

18. Portable household electrical appliance according to any one of claims 15, 16 or 17, characterized in that said at least one rotating tool (8) is driven in rotation along said axis X1.

19. Portable household electrical appliance according to any one of claims 15, 16 or 17, characterized in that said at least one rotating tool (8) is driven in rotation along an axis inclined with respect to said axis X1.

Technical Field

The present invention relates to a portable household appliance for processing food preparations, such as mixers, blenders or other mechanisms for processing food preparations.

The invention relates in particular to the housing of a device equipped with a ventilation system that allows cooling of the electric motor that drives in rotation the mechanism for treating the food preparation.

The invention particularly relates to such equipment enclosures with ventilation systems optimized for better engine cooling.

Background

Portable household appliances for the treatment of food preparations have been available for a long time, in particular in the form of stirrers which allow chopping or mixing of food preparations such as meat or soup, even for the preparation of cake or wafer doughs, sauces, baking proteins, mayonnaise and the like.

Mixers and blenders initially developed comprise a body comprising an electric motor which allows to drive a rotating tool of the blade or whisk type, in rotation, through a transmission. The heating generated by the motor forces its power to be limited and can even quickly lead to equipment failure.

To overcome this drawback, ventilation systems have been installed on the equipment to cool the motor. Therefore, portable household appliances have been developed for the treatment of food preparations, such as those described in patents FR1325785, FR1512989, EP0925010B1 and FR2890252B 1.

In patent FR1325785, the device is a ram mixer, the purpose of which is to enable its use in shallow containers or, conversely, in deep containers, by adding one or two tubular driving extensions. The body of the device has an elongated shape. In order to increase the power of the electric motor, the ventilation system is implemented by means of suction and discharge openings arranged on the body and by means of a radial fan. The suction opening is positioned on a cover of the body arranged opposite the mixing rotary tool and the discharge opening is positioned on the contour of the body, between the position of the electric motor and the position of the rotary tool, the radial fan being positioned in the body opposite the discharge opening. With a radial ventilator, air is circulated from the suction port to the discharge port and by the motor.

In patent FR1512989, the device is a mixer-agitator, the purpose of which is to allow the kneading or processing of relatively thick pasta. The body of the device has an elongated shape. For cooling the electric motor, a ventilation system is implemented by means of a suction opening and a discharge opening arranged on the main body and by means of an axial fan. The discharge opening is positioned on a cover of the body disposed opposite the kneading or mixing rotary tool, and the suction opening is positioned on the contour of the body between the position of the electric motor and the position of the rotary tool, and the axial ventilator is positioned in the body between the discharge opening and the electric motor. With an axial ventilator, air is circulated from the suction port to the discharge port by the motor.

In patent EP0925010B1, the device is a mixer, the purpose of which is to allow the body of the device to be cleaned with water without damaging the motor, and more specifically to allow the cleaning of the part of the body connected to the mixing rotary tool. The body of the device has an elongated shape. For cooling the electric motor, a ventilation system is implemented by means of a suction opening and a discharge opening arranged on the main body and by means of an axial fan. The suction opening is positioned on the contour of the body at an end disposed opposite the rotary mixing tool, and the discharge opening is positioned on the contour of the body at said end, just below the suction opening. Further, the ventilation system includes an air circulation circuit disposed in the main body between the suction port and the discharge port. An axial ventilator is positioned between the suction inlet and the motor. The air is circulated from the suction port to the discharge port by the motor using the axial ventilator and the air circulation circuit.

In patent FR2890252B1, the device is a mixer, particularly for use in collective restaurants, that is to say equipped with a powerful motor, with the aim of reducing the heating of the motor by virtue of the presence of a ventilation system. The apparatus includes an elongated shaped body and a motor disposed within the body and allowing rotation of the hybrid rotary tool via a transmission. The ventilation system includes a suction port and a discharge port. The discharge port is positioned on the contour of the main body, and in the distal end portion disposed opposite to the mixing rotary tool, the motor is positioned in a portion of the main body between the position of the discharge port and the position of the mixing rotary tool. The suction inlet is positioned on the contour of the body in a proximal portion located between the position of the motor and the position of the hybrid rotary tool. In addition, the ventilation system includes an axial ventilator and a radial ventilator. The axial ventilator allows to increase the flow rate of the fresh air and to force the fresh air entering through the suction inlet to circulate in the direction of the discharge outlet, while passing through the motor. The radial fan allows air heated by the electric motor to be discharged through the discharge opening. A radial fan is positioned in the body opposite the discharge opening and an axial fan is disposed between the radial fan and the motor.

The devices described in these patents FR1325785, FR1512989, EP0925010B1 and FR2890252B1 have various drawbacks.

The embodiment described in patent FR1325785 does not ensure the suction of suitable fresh air, the flow rate of which is regulated by a radial fan.

The embodiments described in patents FR1512989 and FR2890252B1 do not ensure sufficient fresh air circulation in certain use cases. In fact, during the mixing of a hot food preparation, such as soup, the hot steam emitted from the food preparation is sucked in through the suction inlet body; therefore, the freshness of the air circulating through the motor is not optimal, which runs counter to proper cooling of the motor.

The embodiment described in patent EP0925010B1 also does not allow sufficiently fresh air circulation. In fact, the position of the discharge opening just below the suction opening has the effect that the heated air which can be re-sucked in by the suction opening is discharged.

Disclosure of Invention

The present invention overcomes the above-mentioned disadvantages.

To this end, the invention relates to a casing of a portable household appliance for processing food preparations, of the mixer or whisk type, comprising:

an elongated-shaped body extending along an axis X1;

a motor disposed within the body;

a drive head driven in rotation by said motor and arranged to drive at least one rotary tool in rotation, if necessary, by means of a transmission;

at least one suction port disposed at an end of the main body opposite to a position of the driving head;

at least one discharge port disposed on the contour of the body at a position intermediate the position of the motor and the position of the drive head.

According to the invention, the housing comprises an axial fan configured to force fresh air entering through the at least one suction opening to circulate in the direction of the at least one discharge opening while passing through the electric motor, the axial fan being located between the at least one suction opening and the electric motor.

Such an embodiment of the housing of the device according to the invention ensures that fresh air is sucked in from above, that is to say at a distance from the food preparation to be treated when the rotating tool driven by the drive head is immersed in said food preparation. Furthermore, the use of an axial ventilator and its positioning upstream of the air circulation circuit, in the vicinity of at least one suction opening, allow an optimal flow of fresh air circulating in said casing and passing through the electric motor arranged downstream of the axial ventilator. The upstream and downstream are defined by the direction of air circulation from the at least one suction opening to the at least one discharge opening.

Advantageously, the main body has an upstream compartment communicating with the at least one suction inlet and a downstream compartment communicating with the at least one discharge outlet, and the downstream compartment houses the electric motor, the axial ventilator being arranged in a channel connecting the upstream compartment to the downstream compartment. This arrangement allows to facilitate the creation of a depression in the upstream compartment, which improves the cooling efficiency.

It is also advantageous if the body has ribs surrounding the axial fan. This arrangement allows to facilitate the realization of the upstream and downstream compartments.

Also advantageously, the downstream compartment is delimited by a bottom wall which is traversed by a drive shaft which connects the electric motor to the drive head. This arrangement allows for facilitating the venting of air from the housing through the at least one vent.

It is further advantageous that a space extends between the motor and the bottom wall, and that at least one discharge opening is arranged at said space. These arrangements allow the motor to be protected from infiltrants which may enter the housing through the at least one discharge opening.

It is also advantageous for the axial ventilator to have a peripheral edge surrounding radial blades extending from a hub driven in rotation along the axis X1 by the electric motor.

It is also advantageous if the housing also comprises a radial fan as a supplement to the axial fan. The radial ventilator is configured to exhaust heated air from the body through the at least one exhaust port.

It is also advantageous if a radial fan is located at the at least one outlet opening. The circulation of the heated air at the output of the electric motor is thus carried out without turbulence, the heated air being discharged directly through the at least one discharge opening by the radial fan without vortices forming in the lower part of the body with the drive head.

Further advantageously, the radial ventilator comprises radial blades driven in rotation along the axis X1 by the electric motor.

Advantageously also, the motor is configured to drive the drive head in rotation along the axis X1. This allows to distance the at least one suction opening upwardly with respect to the food preparation to be treated by means of the rotating tool or tools, when the rotating tool or tools are driven in rotation along the axis X1 or along an axis parallel to the axis X1. As a variant, it is also possible to provide a transmission device configured to drive in rotation one or more rotary tools along another axis, for example perpendicular to the axis X1, in which case at least one suction opening is offset on the side with respect to the food preparation.

According to one embodiment, the at least one suction opening is arranged on a cover of the body, said cover being arranged opposite the drive head. This maximizes the distance of the at least one suction opening with respect to the food preparation to be treated by means of the rotating tool or tools. In addition, this avoids the risk of blocking the at least one suction opening by hand during operation of the housing of the device. However, a variant of the device is envisaged in which the at least one suction opening is located on the outline of the body, in the vicinity of said cover, and/or in the vicinity of the end of the body opposite the drive head.

It is also preferred that the at least one suction opening on the cover of the body is arranged so that the entry of fresh air through the at least one suction opening occurs axially along said axis X1. This allows optimum fresh air to be obtained by the axial ventilator.

It is also advantageous that the body comprises at least one grip area arranged in the vicinity of the at least one suction opening. This allows to ensure that the hand gripping the body of the device is positioned in the gripping area without the suction opening, so as not to obstruct the suction opening.

According to a first embodiment of the device, the device comprises a casing and a mixer foot that elongates the main body along an axis X1, the mixer foot being removably assembled with the main body, the mixer foot comprising at least one rotating tool, the mixer foot comprising a transmission connected to the at least one rotating tool, the drive head being able to drive the transmission in rotation when the mixer foot is assembled with the main body. This allows to process food preparations arranged in deep containers. This configuration is particularly suitable for an apparatus of the submerged mixer type.

According to this aforementioned third embodiment of the device, the mixer foot and the main body may be formed by autonomous parts coupled to each other by means of assembly means. Preferably, the assembly means comprises a first part arranged on the mixer foot and a second part arranged on the main body. The assembly means may be of the screw or bayonet type, in particular. As an alternative, the assembly device may in particular comprise at least one retaining element which is movably mounted relative to the mixer foot or movably mounted relative to the main body.

According to a second embodiment of the apparatus, the apparatus comprises a casing and an accessory head extending the main body along an axis X1, the accessory head being removably assembled with the main body, the accessory head housing at least one rotary tool, the accessory head comprising a transmission connected to the at least one rotary tool, the drive head being capable of driving the transmission in rotation when the accessory head is assembled with the main body. This configuration is particularly suitable for a whisk type of apparatus, the accessory head may house at least one mixing tool, such as one or two whisks.

According to this aforementioned second embodiment of the device, the appendage head and the body can be formed by two autonomous parts coupled to each other by means of assembly means. Preferably, the assembly means comprises a first part arranged on the appendage head and a second part arranged on the body. The assembly means may be of the screw or bayonet type, in particular.

As an alternative, the assembly device may in particular comprise at least one retaining element which is movably mounted relative to the attachment head or movably mounted relative to the main body.

According to a third embodiment of the apparatus, the apparatus comprises a housing and at least one rotary tool coupled to the drive head.

According to one embodiment, at least one rotary tool is driven in rotation along axis X1.

According to another embodiment, at least one rotary tool is driven in rotation along an axis inclined with respect to the axis X1.

Drawings

The following description highlights the features and advantages of the invention. The description is based on the accompanying drawings, in which:

fig. 1 to 4 show a first embodiment of a casing of a portable household appliance for treating food preparations, in which the ventilation system comprises a single axial ventilator;

figures 5 and 6 show a second embodiment of a casing of a portable household appliance for processing a food preparation;

figure 7 shows a cross-sectional view of the housing according to figures 5 and 6, wherein the ventilation system comprises a single axial ventilator;

fig. 8 shows a cross-sectional view of the housing according to fig. 5 and 6, wherein the ventilation system comprises an axial ventilator and a radial ventilator;

fig. 9 shows a third embodiment of a housing of a portable household appliance for processing food preparations, similar to the housing of fig. 5 and 6;

fig. 10 shows a portable household appliance for processing food preparations, comprising a casing assembled with an accessory, namely a mixer foot, comprising a rotary tool of the mixing blade type;

fig. 11 shows a portable household appliance for processing food preparations, comprising a casing assembled with an accessory head comprising two rotating tools of the mixing member type;

fig. 12 shows a portable household appliance for processing food preparations, comprising a casing assembled with a rotating tool of the mixing member type.

Detailed Description

In the following of the description, the portable household appliance for processing food preparations comprising the casing 1 of the invention is referred to as device.

In the context of the description, the terms "horizontal", "vertical", "lower", "upper", "longitudinal", "transverse", "high", "low" may be used in view of the position of the device in the use situation, in which the rotating tool is immersed in the container containing the food preparation and is arranged on the working plane.

In the following of the description, the same reference numerals are used to define the same features or their equivalents, according to different embodiment variants of the device.

With reference to fig. 1, 2 and 4, the casing 1 of the device comprises a main body 2, the main body 2 extending longitudinally along an axis X1. The casing 1 comprises an electric motor 3 housed inside the main body 2 and driving in rotation, along an axis X1, a drive shaft 4, the drive shaft 4 extending downwards in the direction of the axis X1 and being extended at its lower end 4a by a drive head 5. The body 2 comprises two half-shells assembled to each other. In fig. 1 and 2, one of the two half-shells has been removed to see the interior of the housing 1. The drive head 5 is adapted to receive the upper end of a drive shaft (not shown in figures 1 to 4) which is connected to a rotary tool 8 as shown in figures 10, 11 or 12.

The actuation of the electric motor 3 is effected by a control member 22, which control member 22 may be single-speed or multi-speed. These features are known in the prior art; one skilled in the art can implement these features with reference to existing equipment.

Referring to fig. 1 to 4, the body 2 is equipped with a cover 10 at the end 2 b. The cover 10 comprises suction openings 11, these suction openings 11 ensuring that the incoming fresh air circulates inside the body 2 in the direction of the axis X1. This suction of fresh air through the suction opening 11 is ensured by an axial fan 12, which axial fan 12 is arranged above the electric motor 3. The axial ventilator 12 forces the fresh air to circulate from top to bottom in the longitudinal direction of the main body 2, so that it passes through the electric motor 3 to ensure its cooling. Once passing through the motor 3, the air is heated; the heated air is discharged through discharge openings 13, these discharge openings 13 being arranged on the profile 14 of the body 2, below the position of the electric motor 3 housed inside said body 2 and, preferably, in the vicinity of the lower portion 2a of the body 2. Therefore, the suction port 11 is arranged at the end 2b of the main body 2 opposite to the position of the drive head 5. The discharge port 13 is disposed between the motor 3 and the drive head 5.

Referring to fig. 1 and 2, the axial ventilator 12 has a hub 12a mounted on the drive shaft 4. The axial fan 12 is driven in rotation along an axis X1 by a drive shaft 4, the drive shaft 4 itself being driven by the electric motor 3. The drive shaft 4 extends upwardly along the axis X1 above the motor 3. The upper end portion 4b of the drive shaft 4 is coupled with the hub 12a by a coupling means such as a key groove. Thus, the hub 12a is driven to rotate by the motor 3. The axial fan 12 has radial blades 12b extending from a hub 12 a. The axial fan 12 has a peripheral edge 12c surrounding the radial blades 12 b.

As can be seen in fig. 1 and 2, the body 2 has an upstream compartment 18a and a downstream compartment 18 b. The upstream compartment 18a communicates with the suction port 11. The downstream compartment 18b communicates with the discharge port 13. The downstream compartment 18b houses the motor 3. The axial ventilator 12 is arranged in a channel connecting the upstream compartment 18a to the downstream compartment 18 b. More specifically, in the embodiment shown in figures 1 and 2, the main body 2 has ribs 15 surrounding the axial ventilator 12. To this end, each half-shell of the body 2 has a portion of a rib 15. The downstream compartment 18b is delimited by a bottom wall 19, which bottom wall 19 is traversed by the drive shaft 4, which drive shaft 4 connects the motor 3 to the drive head 5. A space 19a extends between the motor 3 and the bottom wall 19. The discharge port 13 is arranged at the space 19 a.

Referring to fig. 1, the body 2 includes a grip region 16 below the cover 10, the height of which corresponds to the height of the control member 22. This allows easy handling of the housing 1 of the device without the risk of closing the suction opening 11. Thus, the main body 2 comprises at least one grip area 16 arranged in the vicinity of the suction opening 11. More specifically, the grip area 16 is disposed below the suction port 11.

Referring to fig. 5 and 6, the housing 1 has a main body 2, and the shape of the main body 2 is different from that shown in fig. 1. The body 2 always extends vertically along an axis X1, the lower section 17a of which corresponds approximately to the section of fig. 1 and 2; thus, in the lower portion 2a of the body 2 there can be seen an assembly device 9 of the bayonet type, as well as a discharge opening 13 located directly above said lower portion 2 a. In contrast, the upper section 17b of the main body 2 is inclined with respect to the axis X1 along the axis X2, the grip region 16 being located in this upper section 17 b. The cover 10 is arranged substantially perpendicular to this axis X2 and comprises a suction opening 11. Thus, the main body 2 comprises at least one grip area 16 arranged in the vicinity of the suction opening 11. The suction port 11 is disposed at an end 2b of the main body 2 opposite to the position of the drive head 5. More specifically, the suction port 11 is disposed in the cover 10. The grip area 16 is arranged below the suction opening 11.

With reference to fig. 7, the electric motor 3, the drive shaft 4, the drive head 5 and the axial ventilator 12 have an arrangement corresponding to that of fig. 1 and 2, these components being provided in a lower section 17a of the body 2, the body 2 having a design similar to that of fig. 5 and 6. The axial ventilator 12 sucks in fresh air through the suction inlet 11, this fresh air entering the main body 2 along a path substantially defined by the tilt axis X2 and then returning along a path defined by the axis X1, the air then passing through the electric motor 3 in which it is heated, this heated air being expelled from the main body 2 through the discharge outlet 13 by means of circulation generated by said axial ventilator.

As can be seen in fig. 7, the main body 2 also has an upstream compartment 18a and a downstream compartment 18b and ribs 15 surrounding the axial ventilator 12. The downstream compartment 18b is also delimited by a bottom wall 19, which bottom wall 19 is traversed by the drive shaft 4, which drive shaft 4 connects the motor 3 to the drive head 5. The discharge port 13 is arranged at a space 19a, which space 19a extends between the motor 3 and the bottom wall 19.

With reference to fig. 8, the body 2 has a design similar to that of fig. 5 and 6. Furthermore, it can be seen that the same design as in fig. 7 with respect to the electric motor 3, the drive shaft 4, the drive head 5 and the axial fan 12 is provided, as a supplement, with a radial fan 30, which radial fan 30 is arranged in the main body 2 opposite the outlet opening 13 shown in fig. 6. The radial ventilator 30 is configured to discharge heated air from the main body 2 through the discharge port 13. Like the axial fan 12, the radial fan 30 comprises radial blades 31, the radial blades 31 being driven in rotation along an axis X1 by a drive shaft 4, the drive shaft 4 being driven by the electric motor 3. The drive shaft 4 has its lower end 4a, which lower end 4a is coupled with the radial vane 31 by means of a coupling device of the keyway type. According to this embodiment, the operation of the radial fan 30 is dependent on the operation of the electric motor 3 and is synchronized with the axial fan 12. The radial fan 30 is arranged in a space 19a, which space 19a extends between the electric motor 3 and the bottom wall 19.

Such a radial ventilator 30 can also be envisaged so that the body 2 of the housing 1 of the device corresponds to the body of fig. 1 and 2.

In fig. 9, the body 2 of the housing 1 is similar to that of fig. 5 and 6 and may incorporate designs similar to those of fig. 7 or 8 involving the axial ventilator 12, the motor 3, the drive shaft 4 and the drive head 5 and, in the case of fig. 8, the radial ventilator 30. Only the positions of the suction ports 11 are changed, these suction ports 11 being provided on the lateral sides 20a, 20b at the end 2b of the main body 2, adjacent to the cover 10 and directly above the grip area 16. However, the suction port 11 is arranged at the end 2b of the main body 2 opposite to the position of the drive head 5.

In fig. 10, the body 2 is schematically shown with a design similar to fig. 1 and 2 or fig. 5 to 9. This figure 10 shows the presence of a mixer foot 7 that extends the body 2 along the axis X1. The mixer foot 7 is an accessory that is removable with respect to the housing 1. The lower part 2a of the body 2, visible in fig. 1, 2, 4, 5, 6, 7 or 8, is configured to receive, by fitting, an end piece 6, which end piece 6 is arranged in the upper part of the mixer foot 7. The upper end of the drive shaft is housed in this end piece 6 and is coupled to the drive head 5 when the end piece 6 is fitted on the lower portion 2a of the body 2. In the embodiment shown in the figures, the coupling between the lower portion 2a of the body 2 and the end piece 6 is achieved by assembling means 9 of the bayonet type. As a variant, other types of assembly means, in particular screw-connection assembly means, or assembly means comprising at least one movable retainer that is moved to assemble or release the mixer foot 7 and the main body 2, are conceivable.

According to this illustration, the mixer foot 7 comprises a tubular portion 21, which tubular portion 21 is prolonged by a bell 23 arranged at the lower end 7b of said mixer foot 7. The bell 23 surrounds the rotary tool 8. If desired, the tubular portion 21 and the bell 23 are formed in one piece. As mentioned above, the tubular portion 21 of the mixer foot 7 houses a drive shaft which drives the rotary tool 8.

In this fig. 10, the rotating tool 8 comprises a blade for mixing a food preparation, such as soup. The mixer foot 7 may, if desired, comprise a plurality of rotating means 8.

The apparatus shown in fig. 10, comprising the housing 1 and the mixer foot 7, forms a submerged mixer.

One or more rotating tools 8 of the mixing member type can also be provided, as shown in figures 11 and 12, for example for the preparation of pasta. In fig. 11 and 12, the rotary tool 8 is of the whisk 24, 25 type. Other types of rotating means 8 of the hybrid component type, in particular hooks or screws, are envisaged.

In the configuration shown in fig. 11, the mixer foot 7 is replaced by an attachment head 26. The attachment head 26 is removable with respect to the housing 1. The accessory head 26 comprises an end piece 27, similar to the end piece 6, having a transmission shaft (not shown) which is coupled with the drive head 5 when said end piece 27 is assembled on the lower portion 2a of the body 2.

In the configuration shown in fig. 11, the rotary tool 8 is formed by two whisks 24, 25 coupled to an attachment head 26. The rotary tool 8 extends along two axes X3 and X4. The drive shaft drives the rotary tool 8 in rotation by means of a transmission mechanism incorporated in the attachment head 26. The transmission mechanism is, for example, a gear type mechanism. As shown in fig. 11, axes X3 and X4 are perpendicular to axis X1. A transmission mechanism allows to drive the whisks 24, 25 in rotation along these axes X3, X4, respectively. Other configurations are contemplated, if desired. The axes X3 and X4 are not necessarily perpendicular to the axis X1. In particular, but not exclusively, the axes X1, X3 and X4 may be parallel. If desired, the axes X1, X3, and X4 may be coplanar.

The device shown in fig. 11, comprising the housing 1 and the attachment head 26, forms a hand-held mixer.

In the configuration shown in fig. 12, the attachment head 26 forms a part of the main body 2. The attachment head 26 includes an end piece 27, the end piece 27 housing a drive head (not shown).

In the configuration shown in fig. 12, the rotary tool 8 extends along an axis X1. The rotary tool 8 is formed from a single whisk 24, the single whisk 24 having a shaft 28 extending along an axis X1. The shaft 28 may be mounted on an end piece 27 of the attachment head 26 to couple to a drive head housed in the attachment head 26. Thus, the drive head may directly drive the rotary tool 8 in rotation.

The device shown in fig. 11, comprising the housing 1 and the rotating tool 8, forms a hand-held mixer.

As an alternative, the attachment head 26 shown in fig. 11 may be integrally formed with the main body 2. Thus, according to a third embodiment of the device, the device comprises a housing 1 and at least one rotary tool 8, the at least one rotary tool 8 being coupled to the drive head 5 by means of a coupling means.

As an alternative, the appendage head 26 shown in fig. 12 may be removable with respect to the body 2. The appendage head 26 can then be coupled to the body 2 of the embodiment shown in fig. 1, 4, 5, 6, 7, 8, 9. If desired, the attachment head 26 may include a transmission connected to the rotary tool 8, which is driven by the drive head 5 arranged in the main body 2 when the attachment head 26 is assembled with the main body 2.

These embodiments of the appendage heads 26 are within the ability of those skilled in the art to derive from the prior art that exists in this field.

As a variant, the housing 1 may comprise at least one suction opening 11 and/or at least one discharge opening 13.

Other configurations of the device may be envisaged within the scope of the invention by considering the following: positioning one or more suction ports 11 at the end 2b of the body 2, in a portion detached from the grip area 16; positioning the axial ventilator 12 above the motor 3 and below the suction port or ports 11; one or more discharge ports 13 are positioned on the body 2 below the position of the motor 3 provided within said body 2.