Working bowl for a food preparation appliance

Abstract

The invention relates to a working bowl (10) for a food preparation appliance, comprising: - a side wall (11) having a lower opening and an upper opening; - a bottom (12), mounted in the lower opening of the side wall (11) in order to place the working bowl (10) in a working configuration in which a user can introduce food to be prepared into the working bowl (10) via the upper opening. The invention is characterised in that the bottom (12) is slidingly mounted in the side wall (11) so as to slide from the lower opening to the upper opening in order to discharge the food received and prepared in the working bowl (10).

Description

DESCRIPTION TITLE: Work tank for a food preparation appliance Technical field of the invention

[0001] The present invention relates generally to food preparation appliances (for example, household appliances or food processors for use in preparing food, i.e. mixing, cutting, chopping, grating, mixing, kneading, etc.). Finally, the invention also relates to the use of this food preparation appliance for carrying out particular operations on the food to be prepared. In particular, the invention relates to a working tank for such food preparation appliances. State of the art

[0002] It is known in the prior art of food preparation appliances that cut, chop, grate food to provide a receiving part for the processed food to shape it. For example, document FR1299087A discloses a mincer with an indentation that allows receiving and putting minced meat in the shape of a pâté or minced steak. In return, this system is dedicated to being coupled to a fairly specific mincer, and forms a complex device with many parts, which complicates use, cleaning and increases manufacturing costs for ultimately fairly limited use. Statement of the invention

[0003] An aim of the present invention is to address the drawbacks of the prior art mentioned above and in particular, first of all, to propose a working tank for a food preparation appliance which allows food to be prepared in various ways, while remaining simple to use and clean, without increasing the complexity or manufacturing costs.

[0004] For this purpose, a first aspect of the invention relates to a working tank of a food preparation appliance, comprising: - a side wall with a lower opening and an upper opening, - a bottom, mounted in the lower opening of the side wall to put the work tank in a working configuration, in which a user can introduce food to be prepared into the work tank through the upper opening, characterized in that the bottom is slidably mounted in the side wall, so as to slide from the lower opening towards the upper opening to expel the food received and prepared in the work tank.

[0005] According to the above implementation, it is the working bowl itself that has a sliding bottom on the side wall to expel the prepared food, if necessary. The use is simple and hygienic, because the user only has to push the sliding bottom, without having to touch the food. Thus the working bowl can be intended for several uses, including that of preparing for example chopped food to then expel it to shape it or to move on to a further preparation step.

[0006] According to one embodiment, the working tank may comprise a removable cap, arranged to engage on the upper opening of the side wall in a removable manner and which may comprise at least one molding impression arranged to receive the food expelled by the sliding bottom towards the upper opening. Such a removable cap makes it possible to cap the working tank, and the molding impression is provided to receive the food expelled when the bottom slides, which makes use particularly practical and hygienic. Indeed, the user does not need to touch the food (for example chopped) to push it into the molding impression. In addition, the working tank having its lower opening closed by the sliding bottom and its upper opening capped or closed by the removable cap, the user can turn the assembly over to push the sliding bottom, the removable cap being placed on a work surface for example.

[0007] According to one embodiment, the removable hat may comprise: - a hat frame arranged to mate with the upper opening, - a drawer mounted sliding in the hat frame and on which the molding impression is embedded. Such a drawer allows the upper opening to be left closed while removing the molding impression to demold or remove the compressed and molded food in the molding impression.

[0008] According to one embodiment, the drawer can be movable between: - a first position in which the molding impression is arranged inside the side wall, and - a second position in which the molding cavity is arranged outside the side wall. In the first position, the molding cavity is opposite the working tank and the sliding bottom to receive the food expelled by the movement of the sliding bottom. In the second position, the molding cavity is accessible to the user in order to remove or demold the food present in the molding cavity.

[0009] According to one embodiment, the working tank may comprise means for locking and / or stopping the drawer, arranged to lock and / or form a stop for the drawer on the cap frame in one of the first position and / or second position.

[0010] According to one embodiment, the means for locking and / or stopping the drawer may comprise: - at least one stop shape provided on one of the hat frame and the drawer, and at least one elastic tab provided on the other of the hat frame and the drawer to elastically fit into the shape stop, and / or - at least one face oriented transversely to a sliding direction of the drawer and forming a stop for the sliding of the drawer. In other words, the locking and / or stop means of the drawer are directly integrated into the structure, which limits the number of spare parts.

[0011] According to one embodiment: - the hat frame can form a sheath, - the drawer can form a sliding plate in the sheath. Such an assembly has few parts and is simple to use.

[0012] According to one embodiment, the molding impression may be formed by a molding accessory having a deformable peripheral wall. Such a deformable peripheral wall facilitates the demolding of food. A slotted side wall may be provided with two ears or edges to be pinched / spread apart by the user.

[0013] According to one embodiment, the molding accessory may be provided to slide in a sleeve formed on the removable cap, and / or the molding accessory may be provided to be removable relative to the removable cap, and the molding accessory is provided with a through opening. Such a through opening allows easy and rapid demolding.

[0014] According to one embodiment, the molding impression may be a through opening provided in the drawer. Such a through opening allows easy and rapid demolding.

[0015] According to one embodiment, the drawer can be removable from the hat frame. Cleaning is facilitated with such an implementation.

[0016] According to one embodiment, the drawer may comprise means for keying the drawer on the hat frame. Thus, the mounting direction is made easier, the user cannot mount the drawer upside down, and it is possible to provide tapered shapes which will always be well oriented and facilitate demolding.

[0017] According to one embodiment, the means for keying the drawer on the hat frame may comprise: - a protrusion, such as an index or a rib, arranged on one of the drawer and the hat frame, - an opening, such as a slot, arranged to receive the protrusion with the drawer in a correct mounting position on the hat frame and provided on the other of the drawer and the hat frame.

[0018] According to one embodiment, the bottom can be detachable from the side wall. Cleaning is facilitated with such an implementation.

[0019] According to one embodiment, the working tank may comprise at least one working tool arranged to work the food received in the working tank, and the bottom may comprise an interface for guiding and / or positioning the working tool. Various working tools may be provided: mincer, knife, press, beater, kneader, mixer, etc. In addition, with the interface for guiding and / or positioning the working tool provided on the bottom, it may be provided to mount the working tool on a shaft which passes through the entire working tank to be guided at its two ends.

[0020] The working tool can be removable from the working bowl. The working tool can thus be removed to slide the bottom and expel the food from the working bowl.

[0021] According to one embodiment, the bottom may comprise scraping means, such as a scraper seal, arranged to scrape the side wall during movement of the bottom from the lower end to the upper end. Such scraping means ensure that all food will be pushed by the sliding bottom, which improves ergonomics and hygiene of use. The scraper seal also makes it possible to obtain a seal between the bottom and the side wall, regardless of the position of the bottom assembled with the side wall.

[0022] According to one embodiment, the working tank may comprise means for guiding and / or stopping the rotation of the bottom on the side wall.

[0023] According to one embodiment, the rotation guidance and / or stopping means may comprise: - at least one axial groove or counterform arranged on one of the bottom and the side wall, preferably on the bottom, - at least one axial edge or axial slide engaged in the axial groove or the counterform and arranged on the other of the bottom and the side wall, preferably on the side wall.

[0024] According to one embodiment, the working tank may comprise means for axially stopping the bottom on the side wall.

[0025] According to one embodiment, the means for axially stopping the bottom on the side wall may comprise: - a flexible latch, such as a flexible tab, provided on one of the bottom and the side wall, - a recess, such as a notch, provided to receive the flexible latch, and arranged on the other of the bottom and the side wall. The flexible latch may typically be a curved or U-shaped tab which can bend in flexion to fit into the recess. A push or pull tab may be provided on the flexible latch for quick assembly / disassembly of the bottom.

[0026] According to one embodiment, the flexible latch may be provided opposite or at the axial groove.

[0027] A second aspect of the invention relates to a food preparation appliance, comprising: - the working tank according to the first aspect, - a work tool arranged in the work tank, - a main housing arranged to be removably coupled on the upper end to work the food received in the working tank, - a drive motor for the working tool, housed in the main housing - optionally, a cup preferably comprising a transmission element for the working tool and arranged between the working tank and the main housing. According to the above embodiment, a cup may be provided between the working tank and the main housing. The cup may be provided to close the upper end of the working tank. The cup may comprise a transmission element for driving the working tool in rotation. In other words: - according to a first variant, there is no cup, the motorized housing directly drives the rotary tool and closes the work tank; - according to a second variant, a cup is provided and the cup is equipped with a transmission element and closes the working tank, the motorized housing drives the rotary tool via the transmission element; - according to a third variant, a cup is provided and the cup is free from said transmission element and closes the working tank, the motorized housing directly drives the rotary tool.

[0028] According to one embodiment, the working tool can be arranged to be removably received in the working tank.

[0029] According to one embodiment, once the food has been processed in the working tank, the main housing can be designed to be able to be introduced into the working tank by the lower end to push the bottom towards the upper end. The user can easily push the bottom using the housing: the ergonomics are simple. Description of figures

[0030] Other features and advantages of the present invention will become more apparent upon reading the following detailed description. of an embodiment of the invention given by way of non-limiting example and illustrated by the appended drawings, in which:

[0031] [fig. 1] represents a general perspective view of a food preparation appliance which comprises a work tank, a work tool, a cup and a main housing;

[0032] [fig. 2] represents a perspective view of the interior of the working tank of figure 1, including in particular a bottom and a side wall;

[0033] [fig. 3] represents a perspective view from above of the bottom of the working tank of figure 2;

[0034] [fig. 4] represents a perspective view from below of the bottom of the working tank of figure 2

[0035] [fig. 5] represents a perspective view from below of the work tank of figure 2, with a removable cap covering an upper opening of the work tank;

[0036] [fig. 6] represents the working tank with the removable cap of figure 5, turned upside down;

[0037] [fig. 7] represents a perspective view of the interior of the inverted working tank of figure 6, in which the bottom of the working tank is not shown;

[0038] [fig. 8] represents a perspective view of the removable hat of figure 5, comprising a hat frame and a drawer;

[0039] [fig. 9] represents a perspective view of the drawer of figure 8;

[0040] [fig. 10] represents a perspective view of the hat frame of figure 8;

[0041] [fig. 11] represents a schematic view of a first stage of the use of the working tank of figure 6 to mold processed foods still placed in the working tank;

[0042] [fig. 12] represents a schematic view of a second stage of the use of the working tank of figure 6 to mold the processed food still placed in the working tank;

[0043] [fig. 13] represents a schematic view of a third stage of the use of the working tank of figure 6 to mold the food worked and still placed in the working tank;

[0044] [fig. 14] represents a schematic view of a fourth stage of the use of the working tank of figure 6 to mold the food worked and still placed in the working tank;

[0045] [fig. 15] represents a sectional view of the working tank in the configuration of figure 1, 2, 5, 6 or 11;

[0046] [fig. 16] represents a sectional view of the working tank in the configuration of figure 13 or 14;

[0047] [fig. 17] shows another sectional view of the working tank in the configuration of figure 13 or 14. Detailed description of embodiment(s)

[0048] Figure 1 represents an exploded perspective view of a food preparation appliance comprising in particular: - a working tank 10 with a side wall 11 and a bottom 12, shown diagrammatically in dotted lines and closing a lower opening of the side wall 11, - a working tool 21 (a rotary tool) designed to be housed in the working tank 10, and comprising in particular a rotation shaft and cutting blades, - a cup 14 comprising a transmission for the working tool 21 and closing the working tank 10, - a main housing 30 arranged to cover the cup 14 and the working tank 10 at its upper opening by coupling with the transmission of the cup 14, and comprising a motor housing 31, as well as a control button 32.

[0049] In this embodiment shown in Figure 1, the cup 14 provides a transmission between the motor unit 30 and the working tool 21. As a variant, the motor unit 30 could directly drive the working tool 21. As a variant, the appliance may be without a cup 14: the food preparation appliance may therefore have or without an intermediate cup 14 between the motor unit 30 and the working tank 10, and if the cup 14 is present, it may be with or without transmission.

[0050] Typically, the working tank 10 is arranged to receive food to be prepared, and the working tool 21 may be provided to work the food to be prepared. The working tool 21 may be a mincer, a mixer, a blender, a knife, etc.

[0051] The motor housing 31 of the main housing 30 houses an electric motor for rotating the working tool 21, and the user only has to press the control button 32 to operate the electric motor.

[0052] Figure 2 shows a perspective view of the work tank 10 without the work tool 21, without the main housing 30 and without the cup 14. The interior of the work tank 10 can be seen through the upper opening: - the bottom 12 closing the lower opening of the side wall 11 comprises a bearing 121 which can receive a lower end of the rotation shaft of the working tool 21 (as a variant, the bottom 12 could also comprise a shaft for guiding the working tool in rotation), - the side wall 11 comprises a plurality of slides 111 formed in protrusion along the axial direction of the inner face of the side wall 11, and which end in notches 112.

[0053] Figure 3 shows the bottom 12 in top view. As indicated above, a bearing 121 is installed in the bottom 12. An added bore may be provided, forming a non-through hole to ensure sealing. The bearing 121 may be provided to be removable from the rest of the bottom to allow easy cleaning, or to be a single-piece and / or non-removable for simple construction.

[0054] On the periphery of the bottom 12, a scraper seal 124 is provided on the upper face (the same face carrying the bearing 121, and raised (hollow) counterforms 125 are provided to coincide with the slides 111 of the side wall 11. Finally, flexible tabs 122 are provided in the counterforms 125.

[0055] Figure 4 shows the bottom 12 seen from below, in order to show a gripping member 123 surrounded by a clearance groove which allows the user to easily manipulate the bottom 12 with his hands.

[0056] We can predict: - the bottom 12 made of plastic material with possibly a filler material, - the bearing 121 may comprise an overmolded or co-injected low friction ring, and - the scraper seal 124 made of flexible overmolded or added material (silicone, natural or synthetic rubber, etc.).

[0057] This construction allows the bottom 12 to slide in the side wall 11 from the lower opening of the side wall 11 towards its upper opening.

[0058] Indeed, the counterforms 125 are engaged with the slides 111 to provide effective axial guidance and the flexible tabs 122 can cooperate with the notches 112 at the end of the slides 111 on the side of the upper opening to axially stop the bottom 12 at the end of its travel. Notches can also be provided on the slides 111 at the level of the lower opening. Instead of the protruding slides 111 and the counterforms 125, however, hollow shapes can be provided in the side wall 11 and projections made on the bottom 12.

[0059] The scraper seal 124 ensures that when the bottom 12 slides from the lower opening of the side wall 11 towards the upper opening, the prepared food will be well pushed back and detached from the side wall 11.

[0060] In summary, the bottom 12 can slide in the side wall 11 in order to expel food previously prepared with the working tool 21: it is sufficient to uncouple the motor housing and remove the working tool 21 to push the bottom 12 from the lower opening of the side wall 11 towards its upper opening. Thus, the prepared food (chopped, cut, mixed or kneaded, etc.) can be recovered quickly and efficiently (the scraper seal 124 guarantees that all the prepared food is properly expelled). The working tank 10 can of course be tilted or turned over to carry out this operation.

[0061] The flexible legs 122 are inclined radially from the lower face of the bottom 12 (the face which carries the gripping member 123), so that the mounting of the bottom 12 from the upper opening of the side wall 11 is easy by pushing the bottom 12 and / or by acting on the flexible legs 122.

[0062] Figure 5 shows that the working tank 10 (side wall 11 equipped with the base 12 and containing prepared food to be collected) can be equipped with a removable cap 13 comprising in particular a cap frame 132 and a drawer 133.

[0063] The hat frame 132 can be coupled to the side wall 11 at its upper opening and the drawer 133 is provided to slide in the hat frame. In Figure 5, it can be noted that the drawer 133 includes a molding impression 131 at its free end extending from the hat frame 132.

[0064] Once the work tank 10 is equipped with the removable cap 13 as in Figure 5, the user can turn the assembly over as shown in Figure 6 to have the bottom 12 (and the lower opening of the side wall 11) positioned upwards. The user can then place the assembly on a work surface, the upper face of the removable cap 13 in contact with the work surface.

[0065] Figure 7 shows the interior of the working tank 10 of Figure 6 without the bottom 12, to show the slides 111 which terminate in the stop notches 112 of the bottom 12, positioned just above the surface of the drawer 133, the molding impression 131 being located outside the working tank 10.

[0066] Figure 8 shows the removable hat 13 without the side wall, with the drawer 133 mounted in sliding connection on the hat frame 132. Other types of connections or mounting can be provided, such as for example a pivoting drawer, a carousel-type rotating plate, a drawer mounted in a sleeve, etc.

[0067] Figure 9 shows the drawer 133, with the molding impression 131 on the left part, and a flat face on the right part. It is possible to note stop faces 1331 and stop tabs 1332 provided to act as a mechanical stop on the hat frame 132, with the possibility for the stop tabs 1332 to fold to retract and allow disassembly of the drawer relative to the hat frame 132.

[0068] The molding impression 131 is in this example a circular through opening, but any type of shape or embodiment can be provided.

[0069] Figure 10 shows the hat frame 132 which has a bore 1322 for receiving the side wall 11, with notches 1321 for securing the coupling. Two windows 1324 are provided for receiving the drawer 133 and a groove 1323 is provided to allow the passage of a tab of the drawer 133, to impose the direction of assembly and avoid a reversal of direction (“upside down”). In other words, the groove 1323 forms with the tab of the drawer 133 a means for coding the mounting of the drawer 133 in the hat frame 132.

[0070] Figures 11 to 14 schematically represent four stages of the use of the working tank 10 for molding or shaping prepared foods.

[0071] As a reminder and as seen above in Figure 1, the food preparation appliance can be used to work with food. For example, in the working tank 10, meat and vegetables can be chopped, cut, mixed with a binder, or even kneaded into a dough. Once the main housing 30 and the working tool 21 have been removed, the working tank 10 can be fitted with the removable cap 13, as shown in Figure 5.

[0072] Once this configuration has been carried out, this assembly can be turned over as shown in Figure 6 and Figure 11 schematically, with prepared food 200. Figure 15 shows in detail the configuration of the working tank 10 in the configuration of Figure 11 (which is identical to the configuration of the working tank 10 of Figures 1, 2, or 6). In Figure 15, the bottom 12 is located at the lower end of the side wall 11, opposite the upper end which has the notches 112 terminating the grooves 111.

[0073] The structure of the bottom 12 can be seen in a little more detail in Figure 15, with the bottom 12 comprising: - a body 126, for example made of plastic with a filler material and which forms the gripping member 123, the flexible tabs 122 as well as the counterforms 125 (not visible in figure 15), - the bearing 121 housed nested in the body 126 (the body 126 can be overmolded onto the bearing 121), - the scraper seal 124 carried by the body 126 and advantageously overmolded on the upper face of the body 126. In this configuration of Figure 15 with the bottom 12 located at the lower end of the side wall 11, the bearing 121 is ready to receive a lower end of the rotation shaft of the working tool 21 (not shown). In the proposed embodiment, the bottom 12 is not removable with respect to the side wall 11, but it could be envisaged to propose a removable bottom. The flexible tabs 122 allow the insertion of the bottom 12 into the side wall 11.

[0074] The drawer 133 can slide in the hat frame 132, so that the user can position the molding impression 131 opposite the upper opening (located at the bottom in Figures 11-14) of the side wall 11, as shown in Figure 12. The bottom 12 is therefore directly accessible from the top, and the user can easily push the bottom 12 to slide it downwards in the side wall 11 (halfway in Figure 12).

[0075] At the end of the stroke, Figure 13, the bottom 12 acts as a piston and pushes the prepared food 200 out of the side wall 11, into the molding cavity 131. In detail, the flexible tabs 122 (visible Figures 3 and 4) enter into mechanical abutment with the notches 112 (visible Figures 2 and 7) to prevent the bottom 12 from coming out of the side wall and / or encroaching into the molding cavity 131. Figures 16 and 17 show in detail the configuration of the working tank 10 in the configuration of Figures 13 and 14. In these Figures 16 and 17, the bottom 12 has been pushed towards the upper end of the side wall 11, sliding in the grooves 111 until it is flush with the edge of the side wall 11. The section of Figure 17 shows the flexible tabs 122 engaged and abutting in the notches 112.

[0076] Once the prepared food 200 has been molded or pushed into the molding cavity 131, the user can slide the drawer 133 again to retrieve the prepared food 200 shaped into minced steak or pâté as shown in Figure 14.

[0077] It is understood that the working tank 10 can be used for multiple purposes, and the sliding bottom 12 allows them to be expelled quickly and cleanly. In addition, by coupling the removable cap 13, the user can shape the prepared foods 200. Industrial application

[0078] A work tank and a food preparation appliance according to the present invention, and their manufacture, are capable of industrial application.

[0079] It will be understood that various modifications and / or improvements obvious to those skilled in the art may be made to the various embodiments of the invention described in the present description without departing from the scope of the invention.

[0080] In particular, it may be noted that the side wall 11 has a circular cylinder shape, but other shapes or silhouettes may be provided. A part may be provided made of plastic, polymer, or metal, or a combination of these materials.

[0081] The working tool 21 may be a chopper, a knife, a mixer, a beater, it may be removable, interchangeable, offered as a kit of parts. A rotation shaft may be provided on which working members having the aforementioned functions may be interchanged or reversibly coupled.

[0082] The base 12 can be provided as proposed in the example described, in the general form of a disc, however it is possible to provide for reversibly and / or temporarily coupling a handle to it to facilitate handling during sliding. It is even possible to provide for using the main housing 30 to push the base 12.

[0083] The wiper seal 124 may be provided formed on the bottom 12, but separate parts may be provided which mate together.

[0084] The removable hat 13 here comprises a sliding drawer, but a single part can be provided which carries the molding impression 131. If the drawer 133 is movable relative to the hat frame 132, rotational, pivoting, tilting, translational movements, or combinations of these movements can be provided.

Claims

CLAIMS

1. Working tank (10) of a food preparation appliance, comprising: - a side wall (11) with a lower opening and an upper opening, - a bottom (12), mounted in the lower opening of the side wall (11) to put the working tank (10) in a working configuration, in which a user can introduce food to be prepared into the working tank (10) through the upper opening, characterized in that the bottom (12) is slidably mounted in the side wall (11), so as to slide from the lower opening towards the upper opening to expel the food received and prepared in the working tank (10).

2. Work tank (10) according to claim 1, comprising a removable cap (13), arranged to engage on the upper opening of the side wall (11) in a removable manner and comprising at least one molding impression (131) arranged to receive the food expelled by the bottom (12) sliding towards the upper opening.

3. A work tank (10) according to claim 2, wherein the removable cap (13) comprises: - a hat frame (132) arranged to mate with the upper opening, - a drawer (133) slidably mounted in the hat frame (132) and on which the molding impression (131) is mounted.

4. Work tank (10) according to claim 3, in which the drawer (133) is movable between: - a first position in which the molding impression (131) is arranged inside the side wall (11), and - a second position in which the molding impression (131) is arranged outside the side wall (11).

5. Working tank (10) according to one of claims 3 to 4, in which: - the hat frame (132) forms a sheath, - the drawer (133) forms a sliding plate in the sheath.

6. Working tank (10) according to one of claims 2 to 5, in which the molding impression (131) is formed by a molding accessory having a deformable peripheral wall.

7. Work tank (10) according to one of claims 3 to 6, in which the drawer (133) is removable from the cap frame (132).

8. Work tank (10) according to claim 7, in which the drawer (133) comprises means for keying the drawer (133) on the cap frame (132).

9. Work tank (10) according to claim 8, in which the drawer keying means (133) on the cap frame (132) include: - a protrusion, such as an index or a rib, arranged on one of the drawer (133) and the hat frame (132), - an opening, such as a slot (1323), arranged to receive the protrusion with the drawer (133) in a correct mounting position on the hat frame (132) and provided on the other of the drawer (133) and the hat frame (132).

10. Work tank (10) according to one of claims 1 to 9, comprising at least one work tool (21) arranged to work the food received in the work tank (10), and in which the bottom (12) comprises an interface for guiding and / or positioning the work tool (21).

11. Working tank (10) according to one of claims 1 to 10, in which the bottom (12) comprises scraping means, such as a scraper seal (124), arranged to scrape the side wall (11) during movement of the bottom (12) from the lower end to the upper end.

12. Working tank (10) according to one of claims 1 to 11, comprising means for guiding and / or stopping the rotation of the bottom (12) on the side wall (11).

13. Work tank (10) according to claim 12, in which the rotation guiding and / or stopping means comprise: - at least one axial groove or counterform (125) arranged on one of the bottom (12) and the side wall (11), preferably on the bottom (12), - at least one axial edge or axial slide (111) engaged in the axial groove and arranged on the other of the bottom (12) and the side wall (11), preferably on the side wall (11).

14. Working tank (10) according to one of claims 1 to 13, comprising means for axially stopping the bottom (12) on the side wall (11).

15. Working tank (10) according to claim 14, in which the means for axially stopping the bottom (12) on the side wall (11) comprise: - a flexible latch, such as a flexible tab (122), provided on one of the bottom (12) and the side wall (11), - a recess, such as a notch (112), provided to receive the flexible latch, and arranged on the other of the bottom (12) and the side wall (11).

16. A work tank (10) according to claim 15 as dependent on claim 13, wherein the flexible latch is provided opposite or at the axial groove or axial slide.

17. Food preparation apparatus, comprising: - the working tank (10) according to one of claims 1 to 16, - a working tool (21) arranged in the working tank (10), - a main housing (30) arranged to removably couple onto the upper end for working the food received in the working tank (10), - a working tool drive motor (21), housed in the main housing - optionally a cup (14) preferably comprising a transmission element for the working tool (21) and arranged between the working tank (10) and the main housing (30).

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