ELECTRIC HOUSEHOLD APPLIANCE FOR FOOD PREPARATION

Description

FIELD OF THE INVENTION

[0001] The present invention relates to a household appliance for food preparation. STATE OF THE ART

[0002] We know of household appliances for food preparation including: a primary output, which comprises a primary output shaft arranged to be rotated by a motor; a secondary output, which comprises a secondary output shaft arranged to be rotated by a motor.

[0003] International application WO 2006 / 120341 gives an example of such a household appliance for food preparation.

[0004] Each output can accommodate a work accessory and generally the work accessory placed on one of the outputs is different from that placed on the other output. In other words, each work accessory is associated with a given output, but several work accessories can be associated with the same output.

[0005] The rotational speed of the motor is variable and set by a selection device comprising a plurality of speed positions.

[0006] For a given speed position, known food preparation appliances use only one motor rotation speed, regardless of the working accessory used, which is not optimal in terms of using the household appliance.

[0007] There is therefore a need for a new type of household appliance for food preparation whose operation is improved, in particular for the use of different working accessories. STATEMENT OF THE INVENTION

[0008] Thus, the invention provides a household food preparation appliance comprising a motor, a main outlet comprising a main output shaft arranged to be rotated by the motor, a movable or removable hatch capable of occupying a closed position in which the hatch prevents access to the main outlet, a device for detecting the position of the hatch, a speed selection device comprising a plurality of speed positions, and a control unit configured to control a rotation speed of the motor as a function of the speed position of the speed selection device. The control unit is further configured, for at least one of the speed positions, to control a first rotation speed of the motor when the hatch occupies the closed position and a second rotation speed of the motor when the hatch does not occupy the closed position.The first motor rotation speed is different from the second motor rotation speed, the first motor rotation speed and the second motor rotation speed being non-zero.

[0009] This household food preparation appliance makes it possible to adapt the speed of the motor, for said at least one of the speed positions, depending on the presence or absence of the hatch and thus to adapt this speed to the work accessory used.

[0010] Being able to adapt the rotation speed of the motor according to the work accessory used allows for a better performance / noise ratio to be obtained. Indeed, when the food preparation household appliance uses the same range of rotation speeds of the motor, regardless of the work accessory used, this single speed range can, for example, prevent optimal performance for a work accessory if this speed range does not allow a sufficient speed to be reached for said work accessory, or on the contrary can cause significant noise if the speed used is high.

[0011] Preferred but not limited to aspects of this food preparation appliance, taken alone or in combination, are as follows: the household food preparation appliance further comprises a secondary output comprising a secondary output shaft arranged to be rotated by the motor. the at least one of the speed positions corresponds to the maximum rotation speed position of the motor. the first rotation speed of the motor is lower than the second rotation speed of the motor. a difference between the first rotation speed of the motor and the second rotation speed of the motor is maximum when the speed position is the highest. a difference between the first rotation speed of the motor and the second rotation speed of the motor is between 300 rpm and 3000 rpm, preferably between 1000 rpm and 2000 rpm.the control unit is configured so that, for several of the plurality of speed positions, the first motor rotation speed and the second motor rotation speed are different and so that, for the other of the plurality of speed positions, the first motor rotation speed and the second motor rotation speed are the same. the control unit is configured so that the first motor rotation speed and the second motor rotation speed are the same, when the motor rotation speed is less than 5000 rpm. the control unit is configured to control the motor rotation speed between 1700 rpm and 15000 rpm.the household food preparation appliance further comprises a base having a base having a reception area configured to receive a working container, and a head linked to the base and comprising the main outlet, a main coupler configured to allow coupling and uncoupling of a first working accessory on the main outlet and to ensure the rotational drive of the first working accessory via the main outlet shaft, the secondary outlet, and a secondary coupler configured to allow coupling and uncoupling of a second working accessory on the secondary outlet and to ensure the rotational drive of the second working accessory via the secondary outlet shaft.the secondary output is a first secondary output, the secondary output shaft is a first secondary output shaft, the secondary coupler is a first secondary coupler, the head further comprising a second secondary output comprising a second secondary output shaft arranged to be driven in rotation by the motor, the head further comprising a second secondary coupler configured to allow coupling and uncoupling of the second working accessory on the second secondary output and to ensure the rotational drive of the second working accessory via the second secondary output shaft, the second secondary output being arranged under the head or at a front end of the head.the first secondary output shaft is arranged to be rotated by the motor via a reduction gear, such that the first secondary output shaft rotates less quickly than the main output shaft and / or the second secondary output shaft is arranged to be rotated by the motor via a reduction gear, such that the second secondary output shaft rotates less quickly than the main output shaft. the detection device comprises a Hall effect sensor and a magnet, the magnet being positioned on the hatch, the Hall effect sensor being positioned in the head. the detection device comprises a switch positioned in the head, the switch being actuated by the hatch when the hatch occupies the closed position. . DESCRIPTION OF FIGURES

[0012] Other characteristics and advantages of the invention will emerge from the following description, which is purely illustrative and non-limiting, and must be read in conjunction with the appended figures in which: There figure 1 represents an exemplary embodiment of a household appliance for food preparation of the invention according to a first configuration. The figure 2 represents a second configuration of the exemplary embodiment of the household appliance for food preparation of the invention illustrated in the figure 1 . THE Figures 3a and 3b represent the training device according to one aspect of the invention. The figure 4 represents the detection device according to one aspect of the invention. The Figure 5a represents a blender bowl usable with the household food preparation appliance of the invention. The Figure 5b represents a removable tool holder of the blender bowl shown in the Figure 5a . There Figure 5crepresents a blender bowl receptacle used with the removable tool holder shown in the Figure 5b to obtain the blender bowl shown in the Figure 5a . There figure 6 represents the blender bowl shown on the Figure 5a coupled with the main output of the household food preparation appliance of the invention. The figure 7 represents a mini-chopper bowl usable with the household food preparation appliance of the invention. The figure 8 represents the mini-chopper bowl shown on the figure 7 coupled with the main output of the household food preparation appliance of the invention. The figure 9 represents the bread dough hook coupled with a secondary output of the household food preparation appliance of the invention. DETAILED DESCRIPTION OF THE INVENTION

[0013] There figure 1represents an example of a household food preparation appliance 110. The household food preparation appliance 110 comprises a base 101, here in the form of a foot, comprising a substantially horizontal base 102 and a leg 108 which extends vertically upwards from the base 101. The base 101 is intended to rest on a horizontal work surface. The base 102 comprises a reception area 109 configured to receive a work container 103, here in the form of a tank, generally removable.

[0014] The working container 103 is for example removably mounted on the receiving area 109 of the base 102 by a bayonet connection.

[0015] The food preparation appliance 110 also comprises a head 104 which, in this example, is articulated on the base 101 around a horizontal axis A0, here at the level of the leg 108. In cases where the head 104 is articulated around the horizontal axis A0, it can be movable between a raised position, corresponding to the illustration of the figure 9 , in which the working container 103 can be easily removed from the base 102, and a working position, illustrated in the figures 1 , 2 , 6 And 8 The concepts of “horizontal”, “vertical”, “top” and “bottom”, and the concepts of orientations which result from them, refer to normal orientations of the household food preparation appliance 110 in operating conditions when the base 101 is placed on a horizontal work surface, and correspond to the representation of the figures.

[0016] The head 104 of the household food preparation appliance 110 has a shape which extends in a longitudinal direction, horizontal in the working position, with a rear longitudinal portion by which it is connected to the leg 108 of the base 101, and a front longitudinal portion which extends overhanging above the base 102 and the working container 103. The head 104 may contain a motor 301, preferably an electric motor, illustrated in the Figures 3a and 3b, the start-up and speed of which can be controlled for example by a speed selection device 107 comprising a plurality of speed positions. This speed selection device 107 is for example a control button arranged on one face of the jamb 108. The motor 301 arranged inside the head 104 comprises a motor shaft oriented along a motor axis which, depending on the designs, can in particular be horizontal or vertical. Alternatively, the motor 301 can in particular be arranged in the base 101.

[0017] The head 104 comprises at least one main output and at least one secondary output. In the example illustrated in the figures, the head 104 comprises: a first main output S1 a second main output S2 a first secondary output S3 a second secondary output S4 and a third secondary output S5.

[0018] The first main output S1 comprises (or is associated with) a first main output shaft O1 arranged to be driven in rotation by the motor 301, more precisely by a shaft of this motor 301.

[0019] The second main output S2 comprises (or is associated with) a second main output shaft O2 arranged to be driven in rotation by the motor 301, more precisely by the shaft of this motor 301.

[0020] We can speak equivalently of rotation of the motor or rotation of the motor shaft.

[0021] The first secondary output S3 comprises (or is associated with) a first secondary output shaft O3 arranged to be driven in rotation by the motor 301, more precisely by the shaft of this motor 301.

[0022] The second secondary output S4 comprises (or is associated with) a second secondary output shaft O4 arranged to be driven in rotation by the motor 301, more precisely by the shaft of this motor 301.

[0023] The third secondary output S5 comprises (or is associated with) a third secondary output shaft O5 arranged to be driven in rotation by the motor 301, more precisely by the shaft of this motor 301.

[0024] The head 104 comprises a first main coupler associated with the first main output S1 and configured to allow coupling and uncoupling of a first working accessory on the first main output S1 and to ensure rotational driving of the first working accessory via the first main output shaft O1.

[0025] The head 104 comprises a second main coupler associated with the second main output S2 and configured to allow coupling and uncoupling of a second working accessory on the second main output S2 and to ensure rotational drive of the second working accessory via the second main output shaft O2.

[0026] The head 104 comprises a first secondary coupler associated with the first secondary output S3, and configured to allow coupling and uncoupling of a third working accessory on the first secondary output S3 and to ensure the rotational drive of the third working accessory via the first secondary output shaft O3.

[0027] The head 104 comprises a second secondary coupler associated with the second secondary output S4 and configured to allow coupling and uncoupling of a fourth working accessory on the second secondary output S4 and to ensure the rotational drive of the fourth working accessory via the second secondary output shaft O4.

[0028] The head 104 comprises a third secondary coupler associated with the third secondary output S5 and configured to allow coupling and uncoupling of a fifth working accessory on the third secondary output S5 and to ensure the rotational drive of the fifth working accessory via the third secondary output shaft O5.

[0029] In the following, the expression coupler designates indistinctly the first main coupler, the second main coupler, the first secondary coupler, the second secondary coupler or the third secondary coupler.

[0030] In the following, the expression main coupler refers indistinctly to the first main coupler or the second main coupler.

[0031] In the following, the expression secondary coupler designates indistinctly the first secondary coupler, the second secondary coupler or the third secondary coupler.

[0032] In the following, the expression output designates indistinctly the first main output S1, the second main output S2, the first secondary output S3, the second secondary output S4 or the third secondary output S5.

[0033] In the following, the expression main output refers indistinctly to the first main output S1 or the second main output S2.

[0034] In the following, the expression secondary output refers indistinctly to the first secondary output S3, the second secondary output S4 or the third secondary output S5.

[0035] In the following, the expression output shaft designates indistinctly the first main output shaft O1, the second main output shaft O2, the first secondary output shaft O3, the second secondary output shaft O4 or the third secondary output shaft O5.

[0036] In the following, the expression main output shaft designates indistinctly the first main output shaft O1 or the second main output shaft O2.

[0037] In the following, the expression secondary output shaft designates indistinctly the first secondary output shaft O3, the second secondary output shaft O4 or the third secondary output shaft O5.

[0038] Two elements are removably connected if they can be coupled and uncoupled, or hooked and unhooked, in a simple manner by an end user of the food preparation appliance 110. Preferably, these operations can be carried out without tools, or with the aid of one or more tools according to a very simple operating procedure. The operating procedure for coupling and uncoupling, and / or for hooking and unhooking two removably connected elements preferably involves a single action, for example pushing or pulling or turning or screwing, etc., or a combination of two actions such as pushing-turning, pulling-screwing, pushing-screwing, etc.A removable connection will thus be distinguished from a removable connection, a removable connection being provided for example to allow maintenance or repair operations on internal parts of the household food preparation appliance 110, generally requiring tools and generally requiring several successive operations to allow disassembly, and being reserved for example for a repairer, outside of normal use of the household food preparation appliance 110.

[0039] The couplers may be formed from a series of hooking lugs extending from the work attachment and intended to engage in the slots provided in a wall of a housing of the head 104. Thus the hooking lugs cooperate with the slots. In addition, the hooking lugs or the slots may include snap-fastening or elastic interlocking means. The couplers may take another form, for example the form of a bayonet attachment, the form of one or more hooking hooks, or the form of a screw thread.

[0040] The rotating input shaft of the work attachment may, for example, have a shape complementary to that of the main output shaft or the secondary output shaft, for example with a male square and a female square complementary to each other, or any other mechanical coupling for transmitting a rotating torque. Preferably, this is achieved by simple engagement of complementary shapes, without requiring intervention with a tool.

[0041] Generally in the working position, the fourth working accessory coupled to the second secondary outlet S4 or the fifth working accessory coupled to the third secondary outlet S5 is engaged inside the working container 103 to act on food contained in the working container 103.

[0042] The food preparation appliance 110 includes a hatch 201 shown in the figure 2. This hatch 201 is movable or removable and can occupy a closing position, in which the hatch 201 mounted on the head 104 prevents access to the first main outlet S1 and to the second main outlet S2. The figure 2 represents the household appliance in a configuration in which the hatch 201 is in the closed position.

[0043] There figure 1 represents the food preparation appliance 110 in another configuration in which the hatch 201 has been removed from the head 104. On the figure 1, the first main output S1 and the second main output S2 are on the upper face of the head 104, the first secondary output S3 is on the front of the device, for example for coupling a grater type or screw mincer type accessory (“meat mincer” in English), and the second secondary output S4 and the third secondary output S5 are on the lower face, for example for coupling a pastry type accessory, such as a whisk tool, a kneading tool or a mixing tool.

[0044] THE Figures 3a and 3brepresent, respectively in top and bottom view, a drive device allowing the first main output shaft O1, the second main output shaft O2, the first secondary output shaft O3, the second secondary output shaft O4 and the third secondary output shaft O5 to be driven by the shaft of the motor 301. This drive device generally comprises a reduction device so that the rotation speed of the second main output shaft O2 and the rotation speed of each of the secondary output shafts O3, O4 and O5 is lower than the rotation speed of the motor 301. The first main output shaft O1 rotates at the same speed as the motor 301. Furthermore, in an exemplary embodiment, the reducer is configured so that the first secondary output shaft O3, the second secondary output shaft O4 and the third secondary output shaft O5 rotate less quickly than the second main output shaft O2.

[0045] In an exemplary embodiment, one or more of the second secondary output S4 and the third secondary output S5 comprise an eccentric coupler allowing the driving of a working accessory according to a satellite movement combining two rotations around two parallel axes. These eccentric couplers are particularly advantageous for the accessories coupled to the second secondary output S4 or the third secondary output S5 and operating in the working container 103. They allow for example to drive in rotation a kneading tool or a whisk adapted for kneading dough or mixing ingredients in the working container 103. In this case the household food preparation appliance 110 is also designated by the name of “pastry robot”, even if it can often be used for preparations other than pastry.

[0046] The food preparation appliance 110 also comprises a device 106 for detecting the position of the hatch 201.

[0047] In an exemplary embodiment, the detection device 106 comprises a switch positioned in the head 104, the switch being actuated by the hatch 201 when the hatch 201 is mounted on the head 104 and therefore occupies the closed position.

[0048] There figure 4 represents the detection device 106. This detection device 106 comprises for example a Hall effect sensor 401 and a magnet 402.

[0049] On the figure 4 , the magnet 402 is positioned on the hatch 201 but it is possible to reverse its position with that of the Hall effect sensor 401.

[0050] The 110 food preparation appliance includes a control unit.

[0051] The control unit is configured to control a rotational speed value of the motor shaft 301 depending on the speed position of the speed selection device 107.

[0052] The control unit is also configured, for at least one of the gear positions, to control: a first non-zero rotation speed value of the motor shaft 301 when the hatch 201 occupies the closed position; a second non-zero rotation speed value of the motor shaft 301 when the hatch 201 does not occupy the closed position, the second non-zero rotation speed value of the motor shaft 301 being different from the first non-zero rotation speed value of the motor shaft 301.

[0053] Thus, the food preparation household appliance 110 uses a first range of rotation speed values ​​of the motor 301 when the hatch 201 occupies the closed position, and a second range of rotation speed values ​​of the motor 301 when the hatch 201 does not occupy the closed position. At least one of the first rotation speed values ​​of the motor 301, of the first speed range being different from the second rotation speed value of the motor 301, corresponding to the second range of rotation speed values ​​of the motor 301.

[0054] One of the speed positions may, for example, correspond to the maximum rotational speed position of the motor 301.

[0055] For at least one of the speed positions, the first rotational speed value of the motor 301 may for example be lower than the second rotational speed value of the motor 301.

[0056] In an exemplary embodiment, for all speed positions of the speed selection device 107, the first rotation speed value of the motor 301 is less than or equal to the second rotation speed value of the motor 301.

[0057] In an exemplary embodiment, the difference between the first rotation speed value of the motor 301 and the second rotation speed value of the motor 301 is maximum when the speed position is the highest.

[0058] The difference between the first rotational speed value of the motor 301 and the second rotational speed value of the motor 301 may for example be between 300 rpm and 3000 rpm or be between 1000 rpm and 2000 rpm.

[0059] In an exemplary embodiment, for some of the speed positions of the speed selection device 107, the first rotational speed value of the motor 301 is lower than the second rotational speed value of the motor 301. For other speed positions of the speed selection device 107, the first rotational speed value of the motor 301 and the second rotational speed value of the motor 301 are identical.

[0060] In an exemplary embodiment, the first rotation speed value of the motor 301 and the second rotation speed value of the motor 301 are identical, when the rotation speed of the motor 301 is less than 5000 revolutions / minute, more precisely when the rotation speed of the motor 301 is less than or equal to 4300 revolutions / minute.

[0061] The control unit can, for example, be used to control a rotation speed of the motor 301 between 1700 rpm and 15000 rpm.

[0062] The table below gives a first example of rotation speed values ​​of the motor 301 as a function of the position of the hatch 201 for different speed positions of the speed selection device 107. [Tab 1] Gear positions of the selection device First engine speed values ​​(rpm) when the hatch is in the closed position Second engine speed values ​​(rpm) when the hatch is not in the closed position Incorporation (0) 1700 1700 1 2700 2700 3 3500 3500 3 4300 4300 4 5000 5500 5 6200 6500 6 7500 8000 7 8800 10000 8 10000 12000 Pulse (9) 12000 15000

[0063] The table below gives a second example of rotation speed values ​​of the motor 301 as a function of the position of the hatch 201 for different speed positions of the speed selection device 107. [Tab 2] Gear positions of the selection device First engine speed values ​​(rpm) when the hatch is in the closed position Second engine speed values ​​(rpm) when the hatch is not in the closed position Incorporation (0) 1700 1700 1 2700 2700 3 3500 3500 3 4300 4300 4 5000 5500 5 6500 6500 6 8000 8000 7 9000 10000 8 10000 12000 Pulse (9) 12000 15000

[0064] In the example of this second table, the first values ​​of rotation speeds of the motor 301 are different, for speed positions 4, 7 and 8, from the first values ​​of rotation speeds of the motor 301, of the example of the first table, which offers the advantage of having a more progressive staging of the speeds.

[0065] In the two examples of the first table and the second table, in the “pulse (9)” speed position: the first value of rotation speed of the motor 301 equal to 12000 rpm is sufficient to allow the production of light pastes in the mixer, the second value of rotation speed of the motor 301 equal to 15000 rpm makes it possible to improve the performance when a mini-chopper or a grinder is used.

[0066] The control unit comprises a processor for implementing a computer program. This computer program comprises program code instructions for controlling the rotational speed of the motor 301 as a function of the position of the hatch 201 and the speed position of the speed selection device 107. Furthermore, the positive control unit also comprises a memory for storing, among other things, the different speeds to be controlled.

[0067] The accessories associated with the first main output S1 and the second main output S2 are for example a blender bowl 501 shown on the Figures 5a to 5c , associated with the first main output S1, or a mini-chopper bowl 701 shown on the figure 7 , associated with the second main output S2.

[0068] These accessories require high rotational speeds. They are in the form of accessories intended to be driven by the food preparation appliance 110. Such accessories have in common the fact of having a closable enclosure delimiting a closed internal space intended to accommodate food to be prepared. Such accessories comprise a rotating cutting tool which is rotated about a tool axis, generally vertical. The cutting tool is contained in the closed internal space and has a central hub and at least one cutting blade extending radially relative to the tool axis from the central hub. Such accessories are generally called mini-choppers when they are intended to chop solid products, or blenders when they are intended to prepare liquid foods.In some embodiments, this resealable enclosure may be formed of a receptacle having an upper opening for introducing food to be prepared and a removable cover which is provided to close the closed internal space in which the food to be prepared is enclosed during operation. In other embodiments, this resealable enclosure may be formed of a tool holder base and a bell which is connected to the tool holder base to form the resealable enclosure in a closed configuration. The cutting tool is generally placed near a lower wall of the resealable enclosure, that is to say near a lower wall of the receptacle or near the tool holder base. The cutting tool is generally carried directly or indirectly, for example via a coupler, by this lower wall.In these accessories, the action of cutting food is not due, unlike other accessories or cooking appliances, to the shearing of the food between a blade and a counter-blade or other surface. The action of cutting food is due to the speed of the blade. It is therefore understood that, in these accessories, the cutting tool must be driven at a high no-load speed, preferably greater than or equal to 5000 revolutions per minute, more preferably greater than or equal to 10000 revolutions per minute. It is also understood that such accessories must be oriented, in operation, such that the cutting tool is arranged in a lower portion of the closable enclosure, and movable in rotation about a tool axis oriented in the vertical direction, or in a mainly vertical direction, that is to say making an angle of less than 45° with the vertical direction.

[0069] The first main outlet S1 can receive the blender bowl 501. In the illustrated embodiment, the blender bowl 501 comprises a tool holder base 501-a (shown in the Figure 5b ) removable from a bowl part 501-b (shown on the Figure 5c ). The bowl part 501-b comprises at its base actuating tabs 501-c (for example 3 in number and placed at 120°, or 2 placed at 180° as visible on the figures 5a And 5c on which one of the 501-c legs is visible). The figure 6 represents the blender bowl 501 and the food preparation appliance 110, when the blender bowl 501 is connected by the first main output S1 to the food preparation appliance 110.

[0070] The second main output S2 can accommodate the 701 mini-chopper bowl, also known as a “food processor”, illustrated in the figure 7 . There figure 8 represents the mini-chopper bowl 701 and the food preparation appliance 110, when the mini-chopper bowl 701 is connected by the second main output S2 to the food preparation appliance 110.

[0071] The first main output S1 and / or the second main output S2 can also accommodate other accessories, for example a citrus press or a juicer.

[0072] The accessories associated with the first secondary output S3 are for example a mincer head, an accessory for grating or slicing (shredder in English), a pasta accessory or for forming pasta (pasta maker in English), or a pressing accessory for obtaining juices and / or coulis, thus providing great versatility of use.

[0073] The second secondary output S3 is generally driven into rotation at a speed between 50 and 200 revolutions per minute, via the reduction device. In addition, one of the lowest speed positions can be used for these accessories. These speeds are well suited to certain culinary tasks, and therefore to certain accessories intended for these tasks.

[0074] The accessories associated with the second secondary output S4 and the third secondary output S5 are for example a whisk, a mixer and a bread dough hook 901, shown in the figure 9 . On the figure 9 The bread dough hook 901 is connected to the food preparation appliance 110 via the second main output S4.

Claims

1. Household appliance for food preparation (110) comprising: - a motor (301), - a main output (S1 or S2) comprising a main output shaft (O1 or O2) arranged to be rotatably driven by the motor (301), - a movable or removable flap (201) which can occupy a blocking position in which the flap (201) prevents access to the main output (S1 or S2), - a detection device (106) for detecting the position of the flap (201), - a speed selection device (107) comprising a plurality of speed positions and - a control unit configured to control a speed of rotation of the motor (301) as a function of the speed position of the speed selection device (107), characterised in that the control unit is further configured, for at least one of the speed positions, to control: - a first speed of rotation of the motor (301) when the flap (201) is in the blocking position, and - a second speed of rotation of the motor (301) when the flap (201) is not in the blocking position, the first speed of rotation of the motor (301) being different from the second speed of rotation of the motor (301), the first speed of rotation of the motor (301) and the second speed of rotation of the motor (301) being non-zero.

2. Household appliance for food preparation (110) according to claim 1, further comprising: - a secondary output (S3, S4 or S5) comprising: - a secondary output shaft (O3, O4 or O5) arranged to be rotatably driven by the motor (301).

3. Household appliance for food preparation (110) according to any one of claims 1 or 2, wherein said at least one of the speed positions corresponds to the position of maximum speed of rotation of the motor (301).

4. Household appliance for food preparation (110) according to any one of claims 1 to 3, wherein the first speed of rotation of the motor (301) is lower than the second speed of rotation of the motor (301).

5. Household appliance for food preparation (110) according to any one of claims 1 to 4, wherein a difference between the first speed of rotation of the motor (301) and the second speed of rotation of the motor (301) is maximum when the speed position is highest.

6. Household appliance for food preparation (110) according to any one of claims 1 to 5, in which a difference between the first speed of rotation of the motor (301) and the second speed of rotation of the motor (301) is between 300 rpm and 3000 rpm, preferably between 1000 rpm and 2000 rpm.

7. Household appliance for food preparation (110) according to any one of claims 1 to 6, wherein the control unit is configured so that, for several speed positions of the plurality of speed positions, the first speed of rotation of the motor (301) and the second speed of rotation of the motor (301) are different and so that, for the other speed positions of the plurality of speed positions, the first speed of rotation of the motor (301) and the second speed of rotation of the motor (301) are identical.

8. Household appliance for food preparation (110) according to claim 7, in which the control unit is configured so that the first speed of rotation of the motor (301) and the second speed of rotation of the motor (301) are identical, when the speed of rotation of the motor (301) is less than 5000 rpm.

9. Household appliance for food preparation (110) according to any one of claims 1 to 8, wherein the control unit is configured to control the speed of rotation of the motor (301) between 1700 rpm and 15000 rpm.

10. Household appliance for food preparation (110) according to any one of claims 2 to 9, further comprising: - a base (101) having a base plate (102) with a receiving area configured to receive a work container (103) and - a head (104) connected to the base (101) and comprising: - the main output (S1 or S2), - a main coupler configured to enable a first work accessory to be coupled to and uncoupled from the main output (S2 or S2) and to drive the first work accessory in rotation via the main output shaft (O1 or O2), - the secondary output (S3, S4 or S5) and - a secondary coupler configured to enable a second work accessory to be coupled to and uncoupled from the secondary output (S3, S4 or S5) and to drive the second work accessory in rotation via the secondary output shaft (O3, 04 or O5).

11. Household appliance for food preparation (110) according to claim 10, in which the secondary output (S3, S4 or S5) is a first secondary output (S3), the secondary output shaft (O3, O4 or O5) is a first secondary output shaft (O3), the secondary coupler is a first secondary coupler, the head (104) further comprising a second secondary output (S4) comprising a second secondary output shaft (O4) arranged to be rotatably driven by the motor (301), the head (104) further comprising a second secondary coupler configured to allow the second work accessory to be coupled to and uncoupled from the second secondary output (S3, S4 or S5) and to drive the second work accessory in rotation via the second secondary output shaft (O3, O4 or O5), the second secondary outlet (S4) being arranged under the head (104) or at a front end of the head (104).

12. Household appliance for food preparation (110) according to claim 11 in which: - the first secondary output shaft (O3) is arranged to be rotated by the motor (301) via a gearbox, so that the first secondary output shaft (O3) rotates at a slower speed than the main output shaft (O1, O2) and / or - the second secondary output shaft (O4) is arranged to be rotated by the motor (301) via a gearbox, so that the second secondary output shaft (O4) rotates slower than the main output shaft (O1, O2).

13. Household appliance for food preparation (110) according to any one of claims 10 to 12, in which the detection device (106) comprises a Hall-effect sensor (401) and a magnet (402), the magnet (402) being positioned on the flap (201), the Hall-effect sensor (401) being positioned in the head (104).

14. Household appliance for food preparation (110) according to any one of claims 10 to 12, in which the detection device (106) comprises a switch positioned in the head (104), the switch being actuated by the flap (201) when the flap (201) occupies the blocking position.