Culinary cutting tool for a food preparation appliance

Abstract

The invention relates to a culinary cutting tool (3) for a food preparation device intended for the preparation of a ground food product, characterized in that it comprises a central portion (3p) extending along a principal axis (X), including a second end (3b), intended to be attached to a tool-carrying axis for the rotational drive of the cutting tool (3), and a first end (3a), and a first cutting blade (L1), attached to the first end (3a), and a second cutting blade (L2), attached to the second end (3b).Each of the first (L1) and second (L2) cutting blades has an internal curvature defining an inner edge (L1bi, L2bi), and an external curvature defining an outer edge (L1be, L2be), the radius of curvature (R) measured at any point on the inner edge (L1bi, L2bi) and / or at any point on the outer edge (L1be, L2be), being greater than or equal to 40 mm respectively over at least half of the inner edge (L1bi, L2bi) and / or the outer edge (L1be, L2be). Figure for the abbreviation: Figure 1.

Description

Title of the invention: Culinary cutting tool for a food preparation appliance. TECHNICAL FIELD OF THE INVENTION

[0001] The present invention relates to the general field of food preparation appliances, also called food preparers, in particular for the preparation of a ground food product, in particular a ground vegetable food product.

[0002] The present invention relates in particular, but not exclusively, to household cooking preparation appliances.

[0003] The invention can particularly enable the production of paste or flour for the production of plant-based drinks or plant-based milk, paste, cream or spreadable butter, yogurt, sauce, sorbet and / or ice cream, and in particular based on oilseeds, such as almonds, hazelnuts, pistachios, walnuts, peanuts, etc., and / or cereals, such as oats, rice, etc.

[0004] The invention thus proposes a culinary cutting tool for a food preparation device intended for the preparation of a ground food product. STATE OF THE ART

[0005] Consumer eating habits are constantly evolving, and the production of dairy products made from animal milk is no longer exclusive since the advent of plant-based milks. Today, there are many varieties of plant-based milks, generally obtained from oilseeds such as almonds, hazelnuts, pistachios, walnuts, or peanuts, and / or from cereals such as oats, soy, or rice.

[0006] Plant-based dairy products, such as milk, cream, butter, yogurt, or sauces, are now readily available in supermarkets and specialty stores. These products, particularly plant-based milk, can also be easily made at home with suitable equipment.

[0007] More and more consumers are becoming fans of this type of product, which offers several advantages such as reduced fat content, thus improving dietary hygiene and limiting health risks; reduced food intolerances thanks to the absence of lactose; and the possibilities these products offer to vegans. Therefore, the manufacture of this type of food is of real interest and is even proving necessary for a segment of the population.

[0008] Plant-based milks already manufactured and available for sale in supermarkets often have an unnatural taste because they are made with artificial flavors and generally contain too much added sugar, preservatives and of additives. Their purchase is also not ecological because it involves the production of a large number of cardboard, plastic or glass containers.

[0009] Prior art household appliances allow for the production of natural plant-based milks without the addition of harmful ingredients. They also have a low environmental impact due to the reuse of containers. However, these appliances can involve cumbersome handling for the consumer, such as manual filtration, which sometimes results in nutrient loss, a degradation of the taste of the resulting products (sometimes caused by residues due to poor filtration), or the inability to produce food products other than plant-based beverages, particularly because a liquid texture is systematically obtained by adding water. Furthermore, the use of such appliances is generally accompanied by difficulties in cleaning the tools used in preparation, as well as in preserving food products over long periods.

[0010] In addition, current devices known for the preparation of plant-based milks do not meet the sometimes immediate needs of a consumer because they require anticipating the preparation and carrying out several operations such as quantity measurements, mixing and filtration, leading to discouragement among the user, especially since the result may prove disappointing.

[0011] Among these known devices, there are some for making pasta from nuts, such as almonds, which use millstones. However, the use of such millstones presents several disadvantages, including: the need for cleaning for small quantities, the limitation of only being able to prepare pasta or flour, and a high implementation cost associated with the use of millstones.

[0012] Furthermore, these devices generally allow the processing of foods that must be frozen beforehand in order to allow the ice block to be machined. Description of the invention

[0013] The invention aims to remedy at least partially the needs mentioned above and the disadvantages relating to the achievements of the prior art.

[0014] In particular, the invention aims to enable the food product to be ground to be worked independently of its physical and / or chemical characteristics, in particular its texture, particle size and / or viscosity, and in virtually the entire working volume of the container into which it is introduced.

[0015] The invention thus relates, according to one of its aspects, to a culinary cutting tool for a food preparation appliance intended for the preparation of a product ground food, in particular ground vegetable food, characterized in that it comprises:

[0016] - a central portion extending along a main axis, comprising a second one end, designed to be attached to a tool-holder shaft of the food preparation appliance for the rotational drive of the cutting tool, and a first end, opposite the second end,

[0017] - a first cutting blade, attached to the first end of the portion central, and a second cutting blade, attached to the second end of the central portion, designed to grind the food product for the preparation of the ground food product,

[0018] each of the first and second cutting blades having an internal curvature defining an inner edge, and an external curvature defining an outer edge, opposite to the inner edge,

[0019] in which the radius of curvature measured at any point of the inner edge and / or at any point of the outer edge is greater than or equal to 40 mm, respectively over at least half of the inner edge and / or the outer edge, in particular at least three-quarters of the inner edge and / or the outer edge.

[0020] Thanks to the invention, it may be possible to obtain a ground food product, particularly from oilseeds and / or cereals, which has a very fine texture that does not require filtering before use. Thus, various recipes can be made for the preparation of plant-based drinks or milks, pastes, creams or spreads, yogurt, sauces, sorbets and / or ice cream, for example chocolate spreads, peanut butter, guacamole, hummus, Chinese bread, date paste, among others.

[0021] Advantageously, the invention can be implemented with no, or virtually no, loss of material, particularly for the production of plant-based beverages with improved taste and texture. The resulting ground food product can be homogeneous. Various recipes using solid or semi-solid foods can be obtained through the invention. Furthermore, it can be implemented with varying degrees of hardness of the food(s) to be ground, for example, frozen foods such as fruit, avocado, chickpeas, hazelnuts, rice, almonds, etc. The fluidity, composition, and / or quantity of the resulting food product can be easily selected according to the user's requirements.

[0022] The cutting tool according to the invention may further comprise one or more of the following characteristics taken individually or in any possible technical combinations.

[0023] The food product to be ground may be in a solid or semi-solid form, that is to say, between the solid and liquid states. It may also be in any other form. type of particle size and / or any type of texture and / or any type of viscosity. It can, for example, be based on oilseeds, such as almonds, hazelnuts, pistachios, walnuts, peanuts, among others, and / or cereals, such as oats, rice, poppy seeds, among others.

[0024] The food preparation appliance may be, in particular, a household appliance or any other type of appliance suitable for preparing ground food products. The food preparation appliance may be a domestic or professional appliance.

[0025] The radius of curvature measured at any point of the inner edge and / or at any point of the outer edge may be greater than or equal to 50 mm, in particular greater than or equal to 60 mm, in particular greater than or equal to 70 mm, and in particular less than or equal to 90 mm, in particular less than or equal to 80 mm, in particular less than or equal to 75 mm.

[0026] The radius of curvature measured at any point on the inner edge over at least half of the inner edge, in particular at least three-quarters of the inner edge, may be substantially equal to the radius of curvature measured at any point on the outer edge over at least half of the outer edge, in particular at least three-quarters of the outer edge.

[0027] Furthermore, the first cutting blade can extend substantially in a first transverse plane relative to the principal axis, and the second cutting blade can extend substantially in a second transverse plane relative to the principal axis. The first transverse plane and the second transverse plane can be parallel to each other.

[0028] The central portion may be cylindrical in shape. In addition, each of the first and second cutting blades may extend from the central portion in diametrically opposite directions to each other.

[0029] The inter-blade distance axially separating the first cutting blade and the second cutting blade can be between 2 mm and 50 mm, in particular between 5 mm and 30 mm, in particular also between 13 mm and 22 mm, for example on the order of 15 mm.

[0030] In addition, each of the first and second cutting blades may have an arc or comma shape.

[0031] Each of the first and second cutting blades may have an outer edge comprising respectively a first bevel and a second bevel, in particular a smooth or notched bevel.

[0032] The orientation of the first bevel of the first cutting blade can be reversed with respect to the orientation of the second bevel of the second cutting blade.

[0033] Furthermore, the first bevel of the first cutting blade can be oriented towards the second end of the central portion. The second bevel of the second cutting blade can be oriented towards the first end of the central portion.

[0034] The length of the first bevel and / or the second bevel can in particular be between 1 mm and 6 mm, for example on the order of 3 mm.

[0035] Furthermore, each of the first and second cutting blades may include a first portion extending substantially along a straight extension axis perpendicular to the main axis, respectively from the first end of the central portion and from the second end of the central portion, and a second portion extending along an arc respectively from the first portion of the first cutting blade and from the first portion of the second cutting blade.

[0036] Each of the first and second cutting blades may have a mounting hole for the passage of the central portion and the fixing of the first and second cutting blades around the central portion.

[0037] In addition, the thickness, measured along the main axis, of each of the first and second cutting blades can be between 0.8 mm and 2.5 mm, for example on the order of 1.3 mm.

[0038] Each of the first and second cutting blades can be made of stainless steel.

[0039] Furthermore, each of the first and second cutting blades may have an internal end fixed to the central portion and an external end, opposite the internal end. The distance between the main axis and the external end of each of the first and second cutting blades may be between half of the smallest transverse dimension of the container, in particular the smallest diameter, especially at the bottom wall, reduced by approximately 0.5 mm, and half of the largest transverse dimension of the container, in particular the diameter, reduced by approximately 6 mm.

[0040] The shape of the first cutting blade and / or the shape of the second cutting blade, observed respectively in the first transverse plane and / or in the second transverse plane, may advantageously differ from a shape substantially similar to that of a semicircle in which the straight line passing through the center of the circle is replaced by a sinusoidal line in the shape of an "S". The external curvature and / or the internal curvature of the first cutting blade and / or the second cutting blade may, when observed respectively in the first transverse plane and / or in the second transverse plane, be free of a change in convexity, in particular over at least 70%, or even 80%, or even 90%, of the length of the external curvature and / or the length of the internal curvature.

[0041] Each of the first and second cutting blades may have a mounting hole having a mounting center, in particular a mounting center through which passes a mounting axis, substantially perpendicular to the first transverse plane or second transverse plane.

[0042] The shape of the first cutting blade and / or the shape of the second cutting blade, observed in particular respectively in the first transverse plane and / or in the second transverse plane, can be inscribed in an aerodynamic profile shape having an extrados corresponding to the outer curvature, an intrados corresponding to the inner curvature, a leading edge, located in particular near the inner end of the first cutting blade and / or the second cutting blade, being in particular the most extreme point away from the mounting center of the mounting hole, and a trailing edge, opposite the leading edge, located in particular in the extension of the outer end of the first cutting blade and / or the second cutting blade.

[0043] The aerodynamic profile may have a chord line, corresponding to the straight line joining the mounting axis to the trailing edge, the length of which may be between 1.1 and 2.2 times the length of the first cutting blade and / or the second cutting blade.

[0044] The aerodynamic profile may have a sweep, defined as the maximum distance between the chord line and the mean line of the profile, corresponding to the curved or cambered line passing through the equidistant points of the extrados and intrados between the center of mounting and the trailing edge, which is between 5 mm and 33 mm.

[0045] In addition, the aerodynamic profile can have a maximum thickness, defined as the maximum distance between the extrados and the intrados, which is between 10 mm and 20 mm.

[0046] The first cutting blade and / or the second cutting blade can extend from the center of the mounting hole to more than half, in particular more than three-quarters, of the length of the mean line of the profile, corresponding to the curved or cambered line passing through the equidistant points of the extrados and the intrados between the leading edge and the trailing edge.

[0047] The first bevel of the first cutting blade and / or the second bevel of the second cutting blade can be formed on the outer curvature from a starting point located on the extrados which is substantially aligned with the mounting center of the mounting hole, perpendicular to the mean line of the profile.

[0048] Furthermore, at the outer end of the first cutting blade and / or the second cutting blade, the inner curvature, located on the intrados, and the outer curvature, located on the extrados, of the first cutting blade and / or the second cutting blade can be connected to each other by an outer edge having a convex shape, with greater convexity near the intrados and less convexity near the extrados.

[0049] According to one embodiment, the first cutting blade and the second cutting blade may be formed from the same metal part. The first cutting blade and the second cutting blade may be a single piece. Thus, a single metal part may comprise both the first and second cutting blades.

[0050] According to one embodiment, the central portion can be overmolded onto the first cutting blade and / or the second cutting blade. In particular, the first cutting blade and the second cutting blade can be made from the same metal part, and the central portion can be overmolded onto this metal part.

[0051] The maximum rotational speed of the cutting tool can be greater than 1000 rpm, in particular between 1500 rpm and 8000 rpm.

[0052] The food preparation apparatus for preparing a ground food product, in particular a ground vegetable food product, may further comprise:

[0053] - a container intended to receive a food product to be ground, in particular a plant-based food product to be ground, having an internal bottom wall and an internal side wall,

[0054] - a cutting tool intended for grinding the food product contained in the container for the preparation of the ground food product,

[0055] - a tool-carrying axis, extending along a main axis and comprising a first at the end, the cutting tool being coupled to the first end of the tool holder shaft,

[0056] - a rotational drive device, intended to perform a rotation of the tool cutting around the main axis,

[0057] - a translational drive device, designed to perform a translation reciprocal between the container and the cutting tool, parallel to the main axis.

[0058] The container and / or the cutting tool can be provided to move in translation parallel to the main axis between a first position, in which the distance between the cutting tool and the internal bottom wall of the container is maximum, and a second position, in which the distance between the cutting tool and the internal bottom wall of the container is minimum.

[0059] The rotation drive device, intended to perform a rotation of the cutting tool around the main axis, may optionally also be provided to perform a reciprocal translation between the container and the cutting tool, parallel to the main axis.

[0060] Similarly, the translational drive device, designed to perform a reciprocal translation between the container and the cutting tool, parallel to the axis main, can also possibly be provided to perform a rotation of the cutting tool around the main axis.

[0061] Advantageously, the maximum distance between the inner side wall and the cutting tool can be non-zero and less than or equal to 6 mm, in particular between 0.5 mm and 4 mm, in particular between 1 mm and 3 mm, for example on the order of 2 mm. This maximum distance can advantageously be maintained along the entire height of the container. Advantageously, this maximum distance can be achieved at least in the second position. Preferably, this maximum distance can be achieved in any intermediate position located between two-thirds and the full stroke of the container and / or the tool, the stroke of the container and / or the tool being defined as the distance between the first position and the second position, the stroke being zero in the first position and total in the second position.Preferably, this maximum distance can be obtained in any intermediate position located between half and full stroke of the container and / or tool, and preferably again in any intermediate position located between the first and second positions.

[0062] According to a first embodiment, the food preparation apparatus may include a frame. The container may be stationary relative to the frame, and the cutting tool may be movable relative to the frame, parallel to the main axis. The translational drive device may be designed to drive the cutting tool in translation parallel to the main axis. The cutting tool may be designed to move in translation parallel to the main axis between the first and second positions.

[0063] According to a second embodiment, the food preparation apparatus may include a frame and a container support designed to receive the container. The cutting tool may be stationary relative to the frame, and the container support may be movable relative to the frame, parallel to the main axis. The translational drive device may be designed to drive the container support in translation parallel to the main axis. The container support may be designed to move in translation parallel to the main axis between the first and second positions.

[0064] Furthermore, the minimum distance between the cutting tool and the internal bottom wall of the container can be between 1 mm and 10 mm, in particular between 1 mm and 5 mm, in particular between 1 mm and 3 mm, for example on the order of 2 mm.

[0065] The container may preferably be made of stainless steel. Alternatively, the container may be made of plastic, transparent or non-transparent, glass, or coated metal.

[0066] Furthermore, the cutting tool may include at least one cutting blade extending substantially in a transverse plane relative to the main axis. The internal bottom wall of the container may extend substantially parallel to the transverse plane.

[0067] Furthermore, the radius of the fillet connecting the inner side wall and the inner bottom wall of the container may be less than 5 mm, in particular less than 4 mm, in particular between 1 mm and 2 mm.

[0068] The container may have a cylindrical shape.

[0069] The container may have a draft angle between 0 and 10°, preferably between 0 and 5°, in particular between 0 and 1°.

[0070] The container may also have a larger transverse dimension, in particular a diameter, relative to the main axis, of between 70 mm and 150 mm, in particular between 90 mm and 125 mm, in particular again between 100 mm and 120 mm, for example of the order of 105 mm, and may have a larger longitudinal dimension, in particular a height, relative to the main axis, of between 70 mm and 160 mm, in particular between 90 mm and 130 mm, in particular again between 100 mm and 120 mm, for example of the order of 110 mm.

[0071] Furthermore, according to the second variant described above, the frame may include at least one translational guide column, in particular two translational guide columns, extending parallel to the main axis. The container support may include a guided portion, in particular two guided portions, mounted on said at least one translational guide column.

[0072] In addition, the container support may include a first support part intended to receive the container and a second support part, mounted in translation on the frame parallel to the main axis and intended to receive the first support part.

[0073] In addition, the food preparation apparatus may include a lid designed to close the container when the container support moves from the first position to the second position. The lid may be traversed by the tool-carrying shaft and be movable in translation along the main axis of the tool-carrying shaft.

[0074] The cover may include at least one guided part, in particular two guided parts, mounted in translation parallel to the main axis on the frame, in particular on at least one translational guide column, in particular two translational guide columns, of the frame.

[0075] Furthermore, the food preparation appliance may include a first transmission device, including a drive belt, positioned between the rotary drive device of the cutting tool, including a first motor, and the tool-holding shaft. The first transmission device may be designed to transmit a rotational movement to the cutting tool under the action of the rotation generated by the rotating drive device.

[0076] The food preparation appliance may include a second transmission device, comprising in particular a motion transmission mechanism, notably a worm gear. The container support may include a transmission portion mounted on the second transmission device. The second transmission device may be designed to transmit a translational motion parallel to the main axis to the container support, via the transmission portion, under the action of the rotation generated by the translational drive device.

[0077] Furthermore, according to a particular embodiment, each of the first and second cutting blades may have a mounting hole having a mounting center through which a mounting axis passes. The shape of the first cutting blade and / or the shape of the second cutting blade may be inscribed within an airfoil shape having an upper surface corresponding to the outer curvature, an lower surface corresponding to the inner curvature, a leading edge, and a trailing edge opposite the leading edge. The airfoil may have a chord line, corresponding to the straight line joining the mounting axis to the trailing edge, the length of which may be between 1.1 and 2.2 times the length of the first cutting blade and / or the second cutting blade. BRIEF DESCRIPTION OF THE FIGURES

[0078] Other advantages, purposes and special features of the invention will become apparent from the following non-limiting description of at least one embodiment of the present invention, with reference to the accompanying schematic figures, in which: • Figures 1 and 2 partially represent, in perspective respectively from a top view and from a bottom view, an example of a cutting tool for a food preparation appliance according to the invention, • Figure 3 represents, by observation from above or below in the first transverse plane or in the second transverse plane, an example of the first or second cutting blade of a cutting tool according to the invention, • Fig. 4 and Fig. 5 represent, according to first and second perspective views, the cutting blade of Fig. 3. • Figure [Fig. 6] represents, in a front perspective view, an example of a food preparation appliance that can use a cutting tool according to the invention, • Figure 7 represents the food preparation appliance of Figure 6 in a side view, with the container support in a first lower position. • Figure 8 shows the food preparation appliance of Figure 6 in a side view, with the container support in a first, raised position, and • Figures 9, 10 and 11 are perspective views, with partial section at the level of the container and container support, illustrating respectively the first low position, the intermediate position and the second high position of the container support when using the food preparation appliance.

[0079] Throughout these figures, identical references may designate identical or analogous elements.

[0080] Furthermore, the different parts shown in the figures are not necessarily to a uniform scale, in order to make the figures more legible. DETAILED DESCRIPTION OF THE INVENTION

[0081] With reference to Figures 1 and 2, an example of a cutting tool 3 according to the invention for a food preparation apparatus 20 for preparing a ground vegetable food product is illustrated. It should be noted that a non-vegetable food product could also be ground.

[0082] As can be seen in Figures 1 and 2, the cutting tool 3 comprises a first cutting blade L1 extending substantially in a first transverse plane PLI, relative to the principal axis X, and a second cutting blade L2 extending substantially in a second transverse plane PL2, relative to the principal axis X. The first transverse plane PLI and the second transverse plane PL2 are parallel to each other. It should be noted that the internal bottom wall If of the container 1, described hereafter, extends substantially parallel to the transverse planes PLI and PL2.

[0083] Furthermore, the cutting tool 3 comprises a central portion 3p, here cylindrical in shape, extending along the principal axis X and situated in line with the tool-holder axis 6. It includes a first end 3a opposite the internal bottom wall If of the container 1 and a second end 3b fixed to the first end 6a of the tool-holder axis 6. The first cutting blade L1 is fixed to the first end 3a of the central portion 3p, and the second cutting blade L2 is fixed to the second end 3b of the central portion 3p. Each of the first L1 and second L2 cutting blades extends from the central portion 3p diametrically opposite to each other.

[0084] Furthermore, each of the first L1 and second L2 cutting blades has an internal curvature defining an internal edge L1bi, L2bi, and an external curvature defining an external edge L1be, L2be, opposite the internal edge L1bi, L2bi.

[0085] Advantageously, the radius of curvature R measured at any point of the inner edge Llbi, L2bi and / or at any point of the outer edge Llbe, L2be, is greater than or equal to 40 mm, in particular greater than or equal to 50 mm, in particular greater than or equal to 60 mm, in particular greater than or equal to 70 mm, and in particular less than or equal to 90 mm, in particular less than or equal to 80 mm, in particular less than or equal to 75 mm, respectively over at least half of the inner edge Llbi, L2bi and / or the outer edge Llbe, L2be, in particular at least three-quarters of the inner edge Llbi, L2bi and / or the outer edge Llbe, L2be.

[0086] The radius of curvature R measured at any point of the inner edge Llbi, L2bi over at least half of the inner edge Llbi, L2bi, in particular at least three-quarters of the inner edge Llbi, L2bi, can be substantially equal to the radius of curvature R measured at any point of the outer edge Llbe, L2be over at least half of the outer edge Llbe, L2be, in particular at least three-quarters of the outer edge Llbe, L2be.

[0087] In addition, the inter-blade distance HL axially separating the first cutting blade L1 and the second cutting blade L2 can be between 2 mm and 50 mm, in particular between 5 mm and 30 mm, in particular again between 13 mm and 22 mm, for example on the order of 15 mm.

[0088] Advantageously, each of the first L1 and second L2 cutting blades has an arc or comma shape whose external curvature respectively includes a first bevel B1 and a second bevel B2, in particular a smooth or notched bevel B1, B2.

[0089] The first bevel Bl of the first cutting blade L1 is oriented towards the second end of the central portion 3p. In this way, it is possible to avoid the risk of having improperly processed ingredients between the blade and the bottom of the container 1. Such a bevel Bl will tend to project the food upwards.

[0090] The second bevel B2 of the second cutting blade L2 is oriented towards the first end of the central portion 3p. In this way, this bevel tends to project the ingredients downwards, thus bringing them back towards the working area of ​​the blades. This allows for more efficient blade operation, particularly for making pastes from nuts such as almonds, hazelnuts, peanuts, and walnuts, among others.

[0091] As can be seen in [Fig.2], the length Lb of the first bevel B1 and / or the second bevel B2 can be between 1 mm and 6 mm, for example on the order of 3 mm.

[0092] Each of the first L1 and second L2 cutting blades further comprises a first portion L1r, L2r extending substantially along a straight extension axis T1, T2 perpendicular to the principal axis X, respectively from the first end 3a of the central portion 3p and from the second end 3b of the central portion 3p, and a second portion Lie, L2c extending along an arc respectively from the first portion L1r of the first cutting blade L1 and from the first portion L2r of the second cutting blade L2.

[0093] Each of the first L1 and second L2 cutting blades here has a mounting hole 01, 02 for the passage of the central portion 3p and the fixing of the first L1 and second L2 cutting blades around the central portion 3p.

[0094] In addition, the thickness el, e2, measured along the principal axis X, of each of the first L1 and second L2 cutting blades can be between 0.8 mm and 2.5 mm, for example on the order of 1.3 mm.

[0095] Each of the first L1 and second L2 cutting blades can be made of stainless steel.

[0096] Furthermore, each of the first L1 and second L2 cutting blades may have an internal end Lia, L2a fixed to the central portion 3p and an external end Llb, L2b, opposite the internal end Lia, L2a, the distance Dim, D2m between the principal axis X and the external end Llb, L2b of each of the first L1 and second L2 cutting blades being between half the smallest diameter of the container 1 at the bottom wall If minus approximately 0.5 mm and half the diameter Db of the container 1 minus approximately 6 mm. Thus, for example, for a container 1 having a minimum diameter at the bottom wall If of approximately 110 mm, the distance Dim, D2m is between 49 mm and 54.5 mm.

[0097] Figure 3 further shows an example of a cutting blade of a cutting tool 3 according to the invention. This cutting blade can be a first cutting blade L1 or a second cutting blade L2. Figures 4 and 5 further show this cutting blade in perspective views allowing better visualization of the bevel Bl, B2 formed on the external curvature and the mounting hole 01, 02. The mounting hole 01, 02 has a mounting center Cl, C2 through which passes a mounting axis Xml, Xm2, substantially perpendicular to the first or second transverse plane.

[0098] As can be seen in [Fig. 3] by the extension in dashed lines, the shape of the cutting blade L1, L2, observed in the first or second transverse plane, is inscribed in an aerodynamic profile shape PA having an extrados EX corresponding to the outer curvature, an intrados IN corresponding to the inner curvature, a leading edge A, located near the inner end Lia, L2a of the cutting blade L1, L2, being the most extreme point in distance from the center of mounting Cl, C2 of the mounting hole 01, 02, and a trailing edge F, opposite the leading edge A, located in the extension of the outer end Llb, L2b of the cutting blade Ll, L2. This trailing edge F corresponds to a fictitious point which is the point of intersection of the intrados IN and the extrados EX opposite the leading edge A.

[0099] This aerodynamic profile PA has a chord line L corresponding to the straight line joining the mounting axis Xml, Xm2 to the trailing edge F, the length of which is between 1.1 and 2.2 times the length of the cutting edge Ll, L2. As an example, for a container 1 having an internal diameter of about 105 mm, with a cutting edge length Ll, L2 of about 51.5 mm, the length of the chord line L is between about 56 mm and 112 mm.

[0100] The aerodynamic profile PA further has a sweep F, defined as the maximum distance between the chord line L and the mean line of the profile LC, corresponding to the curved or cambered line passing through the equidistant points of the extrados EX and the intrados IN between the mounting center 01, 02 and the trailing edge F, which is between 5 mm and 33 mm.

[0101] In addition, this PA aerodynamic profile has a maximum thickness h, defined as the maximum distance between the extrados EX and the intrados IN, which is between 10 mm and 20 mm.

[0102] The cutting blade L1, L2 extends further, from the mounting center 01, 02 of the mounting hole 01, 02 to more than half, and in particular here more than three-quarters, of the length of the average line of the LC profile.

[0103] The bevel Bl, B2 of the cutting blade Ll, L2 is formed on the outer curvature from a starting point BP located on the extrados EX which is substantially aligned with the center of the mounting hole 01, 02, perpendicular to the mean line of the profile LC.

[0104] Furthermore, at the external end Llb, L2b of the cutting blade Ll, L2, the internal curvature, located on the intrados IN, and the external curvature, located on the extrados EX, of the cutting blade Ll, L2 are connected to each other by an external edge Bext having a convex shape, with a greater convexity near the intrados and a lesser convexity near the extrados.

[0105] Furthermore, with reference to Figures 6 to 11, an example of a food preparation apparatus 20 for preparing a ground vegetable food product is schematically illustrated. This ground vegetable food product can be obtained from a vegetable food product to be ground that is in a solid or semi-solid form, i.e., between the solid and liquid states. Any type of particle size and / or any type of texture and / or any type of viscosity can be considered. This vegetable food product to be ground can, for example, be based on oilseeds, such as almonds, hazelnuts, pistachios, walnuts, etc. peanuts, among others, and / or cereals, such as oats, rice, poppy seeds, among others.

[0106] The food preparation apparatus 20 first includes a container 1 intended to receive the plant-based food product to be ground. This container 1 has an internal bottom wall 11 and an internal side wall 11, more clearly visible in Figures 9 to 11.

[0107] The container 1 is advantageously made of stainless steel, which allows it to withstand high temperatures during operation of the food preparation appliance 20, facilitates maintenance and cleaning of the container 1, provides robustness to the container 1, and allows the preparation of all types of plant-based food to be ground. Furthermore, the container 1 has a cylindrical shape, which allows the cutting tool 3 to work throughout the entire volume of the container 1.

[0108] Furthermore, the internal bottom wall If is connected to the internal side wall 11 by a circular fillet along the periphery of the internal bottom wall If. The radius of this fillet between the internal side wall 11 and the internal bottom wall If of the container 1 is less than 5 mm, or even less than 4 mm, or even between 1 mm and 2 mm. In addition, the container 1 has a draft angle between 0 and 10°, preferably between 0 and 5°, or even between 0 and 1°. Advantageously, a very small curvature thus exists between the internal bottom wall If and the internal side wall 11, allowing the cutting tool 3 to work within a maximum volume of the container 1.

[0109] As can be seen in [Fig. 9], the container 1 has a larger transverse dimension Db, here a diameter Db, relative to the principal axis X, which is between 70 mm and 150 mm, or even between 90 mm and 125 mm, or even between 100 mm and 120 mm, and for example on the order of 110 mm. In addition, the container 1 also has a larger longitudinal dimension Hb, here a height Hb, relative to the principal axis X, which is between 70 mm and 160 mm, or even between 90 mm and 130 mm, or even between 100 mm and 120 mm, and for example on the order of 110 mm.

[0110] In addition, the food preparation apparatus 20 includes a cutting tool 3, for example as described above, intended for grinding the plant food product contained in the container 1 for the preparation of the ground plant food product.

[0111] As can be seen in [Fig. 10], the maximum distance Jmax between the inner side wall 11 and the cutting tool 3 is advantageously between 0 and 6 mm, or even between 0.5 mm and 4 mm, or even between 1 mm and 3 mm, and for example here on the order of 2 mm. This maximum distance Jmax can be obtained at least in the second position P2 corresponding to 100% of the stroke of the container 1, defined as the distance between the first position PI (0% of the stroke) and the second position P2 (100% of the stroke), preferably in the last third of the stroke of the container 1, in the direction of the tool 3 towards the second position P2, i.e. between approximately 66.7% and 100 % of the stroke of container 1, better still in half of the stroke of container 1 near the second position P2, i.e. between 50% and 100% of the stroke of container 1, and better still in any intermediate position PI between the first position PI and the second position P2.

[0112] Furthermore, as can be seen in [Fig. 11], the minimum distance Dmin between the cutting tool 3 and the internal bottom wall If of the container 1 is advantageously between 1 mm and 10 mm, or even between 1 mm and 5 mm, or even between 1 mm and 3 mm, and for example here on the order of 2 mm. Thus, the cutting tool 3 is able to work as close as possible to the internal side wall 11 and / or the internal bottom wall If so as to be able to process the plant food product to be ground in a maximum volume corresponding approximately to the volume of the container 1.

[0113] Furthermore, as can be seen in particular in [Fig. 1 1], the food preparation apparatus 20 also includes a tool-carrying shaft 6, extending along a principal axis X and having a first end 6a. The cutting tool 3 is coupled to the first end 6a of this tool-carrying shaft 6, either removably or non-removably.

[0114] Furthermore, as can be seen more precisely in [Fig.10], the food preparation apparatus 20 includes a rotational drive device 4, here a rotational drive motor, intended to perform a rotation of the cutting tool 3 around the main axis X, and a translational drive device 5, here a translational drive motor, intended to perform a reciprocal translation between the container 1 and the cutting tool 3, parallel to the main axis X.

[0115] Advantageously, the container 1 and / or the cutting tool 3 are designed to move in translation parallel to the principal axis X between a first position PI, shown in [Fig. 9], in which the distance Dmax between the cutting tool 3 and the internal bottom wall If of the container 1 is at its maximum, and a second position P2, shown in [Fig. 11], in which the distance Dmin between the cutting tool 3 and the internal bottom wall If of the container 1 is at its minimum. In this way, the cutting tool 3 is able to work over virtually the entire height of the volume of the container 1 containing the plant-based food product to be ground.

[0116] In this embodiment example of figures 6 to 11, the container 1 moves in translation parallel to the principal axis X between the first PI and second P2 positions while the cutting tool 3 remains stationary in translation along the principal axis X.

[0117] Specifically, the food preparation device 20 comprises a frame 10 and a container support 2 intended to receive the container 1. The cutting tool 3 is fixed in translation relative to the frame 10 and the container support 2 is mobile in translation relative to the frame 10, parallel to the main axis X.

[0118] The translation drive device 5 is then intended to drive the container support 2 in translation parallel to the main axis X, the container support 2 being intended to move in translation parallel to the main axis X between the first position PI and the second position P2.

[0119] As can be seen in [Fig. 6], for example, the frame 10 comprises at least one translational guide column 10g, here two translational guide columns 10g, extending parallel to the principal axis X, and the container support 2 comprises a guided portion 2g, here two guided portions 2g, mounted on the translational guide columns 10g. Thus, the vertical movement of the container 1 is facilitated by the existence of these translational guide columns 10g cooperating with the guided portions 2g.

[0120] The container support 2 comprises a first support part 2a intended to receive the container 1 and a second support part 2b, mounted in translation on the frame 10 parallel to the principal axis X and intended to receive the first support part 2a. The second support part 2b comprises the translational guide columns 10g and a base on which the first support part 2a is positioned.

[0121] Furthermore, the food preparation device 20 includes a lid 7, visible for example in [Fig. 6], which is designed to close the container 1 when the container support 2 moves from the first position P1 to the second position P2. This lid 7 is traversed by the tool-carrying shaft 6 and is movable in translation along the principal axis X along the tool-carrying shaft 6. The lid 7 thus makes it possible to close the container 1 when it moves vertically upwards.

[0122] Advantageously, the cover 7 thus comprises at least one guided piece 7g, here two guided pieces 7g, mounted in translation parallel to the main axis X on the frame 10, in particular on at least one translational guide column 10g, here the two translational guide columns 10g, of the frame 10.

[0123] Furthermore, as can be seen in [Fig.7], for example, the food preparation device 20 includes a first transmission device 8, here comprising a transmission belt, positioned between the rotational drive device 4 of the cutting tool 3 and the tool holder shaft 6. This first transmission device 8 is intended to transmit a rotational movement to the cutting tool 3 under the action of the rotation generated by the rotational drive device 4.

[0124] Furthermore, the food preparation apparatus 20 includes a second transmission device 9, comprising here a motion transmission mechanism in the form of a worm gear. The container support 2 includes a transmission portion 2t, visible in particular in [Fig. 8], mounted on the second transmission device 9. This second transmission device 9 is designed to transmit a translational motion parallel to the main axis X to the container support 2. via the transmission portion 2t, under the action of the rotation generated by the translational drive device 5.

[0125] An example of the operation of the food preparation appliance 20 is as follows: In a first step represented by [Fig. 9], the container support 2 and the container 1 are in the lowered position (first position PI), which corresponds to a position for the user to place the container 1 onto its support 2. The cutting tool 3 is located above the container 1. In a second step represented by [Fig. 10], the container support 2 and the container 1 are in an intermediate position PI. The lid 7 then closes the upper part of the container 1, and the cutting tool 3 is located inside the container 1, in its upper part. The rotation of the cutting tool 3 is activated. In a third step represented by [Fig. 11], the container support 2 and the container 1 are in a raised position (second position P2).In this position, the cutting tool 3 is closest to the inner bottom wall If of the container 1.

[0126] It should be noted that the maximum rotational speed of the cutting tool 3 is greater than 1000 rpm, in particular between 1500 rpm and 8000 rpm.

[0127] The work performed by the cutting tool 3 on the plant-based food product to be ground results in a finished product with a very fine particle size, requiring no further intervention from the user, for example, a particle size of less than 200 µm on average. The resulting product can, for example, be mixed with water to obtain plant-based milk without the need to filter the mixture.

[0128] Of course, the invention is not limited to the embodiments just described. Various modifications can be made to them by those skilled in the art. In particular, various aspects have been presented, and the lessons learned from the different aspects can be taken individually or in any technically feasible combination.

[0129] In particular, the cutting tool 3 could be mobile in translation relative to the frame 10, and could move vertically along the main axis X during the operation of the food preparation device 20, while being driven in rotation around the main axis X, the container 1 being immobile in translation relative to the frame 10 during the operation of the food preparation device 20.

[0130] Furthermore, if desired during the operation of the food preparation device 20, the cutting tool 3 and the container 1 could both be movable in translation relative to the frame 10, in translation along the main axis X.

Claims

Demands

1. Culinary cutting tool (3) for a food preparation appliance (20) intended for the preparation of a ground food product, characterized in that it comprises: - a central portion (3p) extending along a principal axis (X), including a second end (3b), intended to be fixed to a tool-carrying axis (6) of the food preparation appliance (20) for the rotational drive of the cutting tool (3), and a first end (3a), opposite the second end (3b), - a first cutting blade (L1), fixed to the first end (3a) of the central portion (3p), and a second cutting blade (L2), fixed to the second end (3b) of the central portion (3p), intended to grind the food product for the preparation of the ground food product, each of the first (L1) and second (L2) cutting blades having an internal curvature defining an internal edge (L1bi, L2bi),and an external curvature defining an outer edge (L1be, L2be), opposite the inner edge (L1bi, L2bi), in which the radius of curvature (R) measured at any point on the inner edge (L1bi, L2bi) and / or at any point on the outer edge (L1be, L2be), is greater than or equal to 40 mm, respectively over at least half of the inner edge (L1bi, L2bi) and / or the outer edge (L1be, L2be), in particular at least three-quarters of the inner edge (L1bi, L2bi) and / or the outer edge (L1be, L2be).

2. Cutting tool according to claim 1, wherein the radius of curvature (R) measured at any point on the inner edge (L1bi, L2bi) and / or at any point on the outer edge (L1be, L2be), is greater than or equal to 50 mm, in particular greater than or equal to 60 mm, in particular greater than or equal to 70 mm, and in particular less than or equal to 90 mm, in particular less than or equal to 80 mm, in particular less than or equal to 75 mm.

3. Cutting tool according to claim 1 or 2, wherein the radius of curvature (R) measured at any point on the inner edge (L1bi, L2bi) over at least half of the inner edge (L1bi, L2bi), in particular at least three-quarters of the inner edge (L1bi, L2bi), is substantially equal to the radius of curvature (R) measured at any point on the outer edge (Llbe, L2be) on at least half of the outer edge (Llbe, L2be), in particular at least three-quarters of the outer edge (Llbe, L2be).

4. Tool according to any one of claims 1 to 3, wherein the first cutting blade (L1) extends substantially in a first transverse plane (PL1), relative to the principal axis (X), and the second cutting blade (L2) extends substantially in a second transverse plane (PL2), relative to the principal axis (X), the first transverse plane (PL1) and the second transverse plane (PL2) being parallel to each other.

5. Cutting tool according to any one of claims 1 to 4, wherein the central portion (3p) is cylindrical in shape.

6. Cutting tool according to any one of claims 1 to 5, wherein each of the first (L1) and second (L2) cutting blades extends from the central portion (3p) diametrically opposite to each other.

7. Cutting tool according to any one of claims 1 to 6, wherein the inter-blade distance (HL) axially separating the first cutting blade (L1) and the second cutting blade (L2) is between 2 mm and 50 mm, in particular between 5 mm and 30 mm, in particular again between 13 mm and 22 mm, for example on the order of 15 mm.

8. Cutting tool according to any one of claims 1 to 7, wherein each of the first (L1) and second (L2) cutting blades has an arc or comma shape.

9. Cutting tool according to any one of claims 1 to 8, wherein each of the first (L1) and second (L2) cutting blades has an outer edge (L1be, L2be) comprising respectively a first bevel (B1) and a second bevel (B2), in particular a smooth or notched bevel (B1, B2).

10. Cutting tool according to claim 9, wherein the orientation of the first bevel (B1) of the first cutting blade (L1) is reversed with respect to the orientation of the second bevel (B2) of the second cutting blade (L2).

11. Cutting tool according to claim 9 or 10, wherein the first bevel (B1) of the first cutting blade (L1) is oriented towards the second end of the central portion (3p), and wherein the second bevel (B2) of the second cutting blade (L2) is oriented towards the first end of the central portion (3p).

12. Cutting tool according to any one of claims 9 to 11, wherein the length (Lb) of the first bevel (Bl) and / or the second bevel (B2) is between 1 mm and 6 mm, in particular in the order of 3 mm.

13. Cutting tool according to any one of claims 1 to 12, wherein each of the first (L1) and second (L2) cutting blades comprises a first portion (L1r, L2r) extending substantially along a straight extension axis (T1, T2) perpendicular to the principal axis (X), respectively from the first end (3a) of the central portion (3p) and from the second end (3b) of the central portion (3p), and a second portion (L1r, L2c) extending along an arc respectively from the first portion (L1r) of the first cutting blade (L1) and from the first portion (L2r) of the second cutting blade (L2).

14. Cutting tool according to any one of claims 1 to 13, wherein each of the first (L1) and second (L2) cutting blades has a mounting hole (01, 02) for the passage of the central portion (3p) and the fixing of the first (L1) and second (L2) cutting blades around the central portion (3p).

15. Cutting tool according to any one of claims 1 to 14, wherein the thickness (el, e2), measured along the principal axis (X), of each of the first (L1) and second (L2) cutting blades is between 0.8 mm and 2.5 mm, in particular in the order of 1.3 mm.

16. Cutting tool according to any one of claims 1 to 15, wherein each of the first (L1) and second (L2) cutting blades is made of stainless steel.

17. Cutting tool according to any one of claims 1 to 16, wherein each of the first (L1) and second (L2) cutting blades has an inner end (L1a, L2a) attached to the central portion (3p) and an outer end (L1b, L2b), opposite the inner end (L1a, L2a), the distance (Dim, D2m) between the main axis (X) and the outer end (L1b, L2b) of each of the first (L1) and second (L2) cutting blades being between half of the smallest transverse dimension of the container (1) reduced by about 0.5 mm and half of the largest transverse dimension (Db) of the container (1) reduced by about 6 mm.

18. A cutting tool according to any one of claims 1 to 17, wherein each of the first (L1) and second (L2) cutting blades has a mounting hole (01, 02) having a mounting center (Cl, C2) through which passes a mounting axis (Xml, Xm2), and in which the shape of the first cutting blade (Ll) and / or the shape of the second cutting blade (L2) is inscribed in an aerodynamic profile shape (PA) having an extrados (EX) corresponding to the outer curvature, an intrados (IN) corresponding to the inner curvature, a leading edge (A) and a trailing edge (F), opposite the leading edge (A), the aerodynamic profile (PA) having a chord line (L), corresponding to the straight line joining the mounting axis (Xml, Xm2) to the trailing edge (F), the length of which is between 1.1 and 2.2 times the length of the first cutting blade (Ll) and / or the second cutting blade (L2).

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