EP2516046B1 - Kitchen appliance, in particular for preparing flour-based dough - Google Patents

Kitchen appliance, in particular for preparing flour-based dough Download PDF

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Publication number
EP2516046B1
EP2516046B1 EP10810780.6A EP10810780A EP2516046B1 EP 2516046 B1 EP2516046 B1 EP 2516046B1 EP 10810780 A EP10810780 A EP 10810780A EP 2516046 B1 EP2516046 B1 EP 2516046B1
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EP
European Patent Office
Prior art keywords
tool
working
counter
rotation
food preparation
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EP10810780.6A
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German (de)
French (fr)
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EP2516046A1 (en
Inventor
Michel Loiselet
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SEB SA
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SEB SA
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/95—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with stirrers having planetary motion, i.e. rotating about their own axis and about a sun axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/06—Mixing of food ingredients
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/06—Mixing of food ingredients
    • B01F2101/08—Mixing of dough

Definitions

  • the present invention relates to the technical field of food preparation equipment used in particular to ensure the preparation of flour dough such as for example, but not exclusively, bread dough, pie dough or pastries.
  • a food preparation apparatus also called planetary type food processor or mixer
  • the apparatus also comprises a head frame further comprising a pivoting arm whose free end, intended to be placed above the tank, comprises means for holding and driving in rotation of at least one mixing tool interchangeable, the latter may be a hook for pasta, a palette for creams or a whip for liquids.
  • the mixing tool generally used is a kind of L-shaped arm, often called a hook, to ensure kneading of the dough.
  • this type of tool does not always make it possible to obtain a bread dough of satisfactory quality. This lack of quality seems to be able to be accounted for the kneading performed by the L tool, a good kneading being complex.
  • a patent application FR 2 710 551 a proposed mixing the ingredients and kneading the dough using two mixing tools.
  • a first tool is stationary with respect to the mixing container and has an L shape.
  • the second tool is rotatable relative to the mixing container and has a G shape.
  • the two mixing tools are further adapted so that during the rotation of the tool in G the horizontal branch of the tool in L passes through the loop of G.
  • a first mixing tool is in the form of a flat perforated spatula, also called pallet or sheet, extending in a vertical plane and has, inside the tank, a planetary type movement resulting from the rotation of the first tool on itself about a vertical secondary vertical axis of rotation combined with a rotation of the secondary axis about an axis vertical rotation principal confused with the central axis of the tank.
  • the second tool is made in the form of a scraper bar, called scraper, rotating synchronously to the first tool around the main rotation axis being located in the immediate vicinity of the wall of the tank so as to take off the dough in the process of kneading.
  • scraper has the particular advantage of avoiding crusting sticky substances to the wall when the device is provided with heating means of the tank.
  • Other food preparation devices are described in the documents US Patent 4946285 and DE 906921 .
  • the counter-tool has a lower portion having a shape matching the shape of the path swept by the lower part of the first work tool and ending advantageously with a tip may deviate from the path of the first work tool.
  • a tip at the end of the counter-tool has the advantage of piercing the fabric of the dough during kneading to direct and facilitate the flow of the flow of the dough.
  • the axes of rotation S and P are parallel.
  • the location and the shape of the first working tool and the counter-tool are adapted so that the counter-tool is located at the periphery of the first working tool during the rotation of this tool. latest.
  • the apparatus is adapted so that the first working tool passes regularly close to the counter-tool so as to induce in particular a rolling effect. , stretching and shearing, in the case of dough preparation, with aeration, favorable to the creation of harmonious flows.
  • the minimum horizontal distance between the first working tool and the counter-tool may be less than 10 mm and preferably between 2 to 6 mm.
  • the horizontal distance separating these two surfaces is between 1 mm and 10 mm and preferably between 2 and 6 mm.
  • the counter-tool has the advantage of working in synergy with the first slow-speed working tool for kneading pasta but can also be used to work in synergy with a palette or a whip for the threshing of creams or whipping liquids at higher speeds.
  • the movement of the first working tool is a compound rotation movement, planetary type, the first working tool rotating, on the one hand, on itself around its axis of rotation S and, on the other hand, at the same time as the plate, around the axis P which is not coincident with the axis of rotation S.
  • the plate is adapted so that the axis of rotation (P) of the counter-tool is, in the mixing position, near or even coincident with the center or the central axis of the tank.
  • the drive means of the tools may be located either above the tank or below it, which will then have openings allowing the passage of the tools and their adaptation on means of maintenance and training.
  • the mixing tools are preferably removable so as to facilitate their cleaning and that of the device.
  • the rotational drive means of the first working tool and the plate are carried by a movable arm integral with the chassis and adapted to be, in the mixing position, placed above the tank.
  • the first working tool is a hook whose working limb has a curved lower end adapted to pass near the center of the tank and preferably exceed the center with an expanded end shape spoon-shaped, or spatula, to pick up the dough.
  • the axis of rotation (S) is located at a distance from the axis of rotation (P) greater than 7 mm, such a distance being variable in a function of the volume and diameter of the vessel, the ratio of the desired speeds between the rotation of the first work tool and the counter-tool and the number of passage points in the tank to be scanned by the first work tool.
  • the counter-tool has a concavity oriented towards the axis of rotation (P).
  • the concave inner surface of the counter-tool partly envelops the surface swept by the convex outer surface of the first work tool during its rotation.
  • the first working tool is a kneading hook, a palette for threshing creams or a whip for whipping liquids.
  • the first working tool is a mixing hook, the hook and the counter-tool being made to have an elongate transverse cross-section, preferably oblong or oval to provide greater mechanical resistance, which gives their working limb, in particular to the active part intended to be in contact with the ingredients, an aerodynamic flattened shape as opposed to the shapes of known tools having a circular or square cross section.
  • the elongated transverse cross section of the first working tool and the counter-tool comprises a concave inner face and a convex outer face.
  • the working arm of the counter-tool has a width and a thickness which decreases from the adapter base to the end of the counter-tool opposite to the base of the tool. adaptation.
  • the working leg of the hook has a width and a thickness which decreases from a fixing base on the plate to the opposite end of the hook.
  • the end of the hook, opposite to the head is bent towards the head and widened at the end like a spoon or spatula, advantageously upward, such a characteristic having the advantage of aerate the dough and have a better hold of small amounts of dough.
  • the concave inner surface of the counter-tool has, seen in the median vertical plane, a radius of curvature greater than the radius of curvature of the convex outer surface of the hook.
  • a food preparation apparatus as illustrated in FIG. figure 1 and generally designated by the reference A, comprises a frame 1 which supports a removable mixing container 2.
  • the container 2 is in the form of a vessel symmetrical with respect to a vertical central axis.
  • the cooking apparatus A further comprises an arm 3 secured to the frame 1 and movable in rotation along a substantially horizontal axis between a working or mixing position M as illustrated. figure 1 and a raised position, not shown, in which the tank 2 can be easily removed.
  • the arm 3 comprises, at a free end located above the tank, means 4 for holding and driving working tools, not shown, in motion inside the tank 2.
  • the holding and driving means 4 are adapted to drive at least one tool according to a planetary type movement.
  • the holding and driving means 4 comprise, as shown in FIG. figure 2 A movable platen 5 for rotation on itself about a vertical axis of rotation P that can be termed principal here that, in the example shown, is substantially coincident with the axis of central symmetry of the tank 2 and passes substantially through the center of the tank.
  • the plate 5 also carries an eccentric turret 6 containing a ring, not shown, for rotating a work tool along an axis of rotation S which can be described here as secondary and which is, according to the illustrated example parallel to the main axis of rotation P.
  • the secondary rotation axis S is situated at a distance from the main axis of rotation P greater than 7 mm, this distance being able to vary according to the diameter of the tank 2.
  • the holding and driving means 4 are driven by an electric motor 7 integrated in the arm 3 by means of a kinematic chain in particular an epicyclic gear train according to a design widely known to those skilled in the art and therefore does not require further description.
  • the holding and driving means 4 are adapted to receive a set E of two working tools, in accordance with the invention, more particularly illustrated in FIGS. figures 3 and 4 .
  • the assembly E consists of a first working tool 10, called a hook, and a second working tool 11, called counter-tool, more particularly designed to be used in particular in combination with the hook 10, which may, however, to be used alone.
  • the hook 10 comprises an adaptation head 12 which has a pin 13 intended to be engaged in the turret 6 so as to ensure the attachment of the hook 10 and its rotational drive on itself as will appear later.
  • the pin has a vertical axis ⁇ which, in the mixing position, is aligned with the secondary axis of rotation S.
  • the hook 10 comprises from the adaptation head 12 a working branch 14 which has, at least in its active part intended to be in contact with the ingredients, here corresponding to the lower three quarters of the working limb 14, a form of helical general vertical axis may also be called spiral arm.
  • the average fiber 15 of the working limb 14 corresponds to or describes a portion of a helix having a vertical axis offset with respect to the axis of the trunnion 13 which, as will appear, subsequently is merged with the axis secondary rotation S when the pin 13 is engaged in the turret 6.
  • the working limb 14 has, in its middle part at least, a cross section of generally oblong shape having a concave inner flank and a convex outer flank as shown in detail figure 4.1 .
  • the width I 10 of the working limb 14 decreases from the adaptation head to near the end 16 and then increases again at the end 16 of the hook 10 to form a spoon or spatula remontante .
  • the width w 10 of the working arm 14 may have a maximum value of between 10 mm and 100 mm.
  • the thickness e 10 of the working limb 14 of the hook 10 can be understood between 3 mm and 50 mm depending on the size of the hook 10. While the height h 10 of the working limb 14, measured between the base of the adaptation head 12 and the lowest end of the branch 14, can then be between 10 cm and 150 cm depending on the size of the tank 2.
  • the counter-tool 11 has a fastening base 20 allowing a substantially rigid attachment of the counter-tool 11 on the plate 5 thus making a complete connection so that the counter-tool 11 is perfectly integral with the plate 5 and rotated by this latest.
  • the counter-tool 11 also has a working limb 21 which extends downwards from the base 20.
  • the working limb 21 has, in profile view as illustrated in FIG. figure 4 , an arcuate shape at least in its lower part intended to be in contact with food.
  • the working limb 21 of the counter-tool 11 has an open C shape while the working limb 14 of the hook 10 has, in profile, a slightly closed spiral shape, as shown by comparison with FIG. figure 4 .
  • the radius of curvature of the inner face 22 of the counter-tool 11 is greater than the radius of curvature of the outer face 23 of the hook 10.
  • the working arm 21 of the counter-tool 11 also has a substantially oblong cross section with a concave inner face and a convex outer face as shown in detail in FIG. figure 4.1 .
  • the width I 11 of the working limb decreases from the adapter base 20 to the pointed end 24 of the branch 21 opposite the base 20, as shown in front view of FIG. figure 5 .
  • the width 11 of the working limb 21 may have a value of up to 120 mm.
  • the thickness e 11 of the working limb 21 of the counter-tool 11 may be in a median region between 1 mm and 35 mm depending on the volume of the vessel 2. It may also be noted that the counter-tool 11 has an arcuate shape in front view. It should be noted that the counter-tool 11 is made so that its lower end 24 is substantially at the same level as the lower end of the hook 10 when the counter-tool 11 and the hook 10 are fitted on the holding means and 4 of an apparatus A. In an alternative embodiment, the pointed lower end 24 of the counter-tool 11 may also be a little further away from the passage of the hook 10 to pick up the dough and bring it back to the hook 10.
  • the mixing tools 10 and 11 thus formed are used in the following manner.
  • the counter-tool 11 is adapted to the plate 5 at means, for example, pins 26 engaging in complementary bores formed in the plate 5 and not visible in the figures.
  • the counter-tool 11 is then perfectly immobilized relative to the plate 5 which it is integral in rotation.
  • the adaptation of the hook 10 is performed by engaging the pin 13 in the turret 6. It should be noted that the method of fixing and driving a rotating tool such as the hook 10 is perfectly known to the skilled in the art and therefore does not require further explanation.
  • the start of the electric motor 7 associated with the holding and driving means 4 ensures a rotation of the counter-tool 11 around the main axis of rotation P in the direction of the arrow F1. Given its complete fixation on the plate 5, the counter-tool 11 always retains the same relative orientation with respect to the tank 2 during this rotation, the concavity of the counter-tool 11 being oriented towards the axis P.
  • the hook 10 experiences a complex rotational movement resulting, on the one hand, from the rotation of the hook 10 on itself around the secondary rotation axis S and, on the other hand, on the other hand, the rotation of this secondary axis S around the main axis of rotation P.
  • the hook 10 is driven in a rotational movement on itself, indicated arrow F 2 at a speed greater than the speed the rotation of the plate 5 and therefore the counter-tool 11.
  • the direction of rotation of the hook on itself 10 is preferably opposite to the direction of rotation of the counter-tool 11.
  • the counter-tool tool 11 has a counterclockwise direction of rotation while the hook 10 has a direction of rotation on itself hourly.
  • the conformations of the hook 10 and counter-tool 11 are such that the minimum distance d between the convex outer face 23 of the hook and the concave inner face 22 of the counter-tool 11 is less than 10 mm.
  • the conformations of the hook 10 and the tank 2 and the position of the turret 6 on the plate 5 are such that the minimum horizontal distance D 10 , between the convex outer face 23 of the hook 10 and the inner wall of the tank 2, is less than 8 mm.
  • the counter-tool 11 is disposed on the plate 5 at the periphery of the hook 10 and partially envelops the volume described by the rotation of the outer face 23 of the hook, the counter-tool 11 being however inside the volume swept by the hook 10 in the tank 2 during the rotation of the plate 5.
  • the use of the mixing tools according to the invention makes it possible to obtain, particularly in the case of kneading a bread dough, a good quality of dough and therefore of crumb. This good quality seems to result from the cooperation between the counter-tool and the hook, in particular the way the counter-tool 11 and the hook 10 interact to stretch, roll and fold successively the dough in formation as well as the slight shearing effect intervening, respecting the fibers of the dough, when the hook 10 passes close to the counter-tool 11.
  • the pointed lower end of the counter-tool 11 is oriented forward with respect to the direction of rotation of said counter-tool 11 to direct the flow towards the hook 10.
  • the hook may be replaced by a palette for threshing creams, or by a whip for whipping liquids rotating in synergy with the counter-tool to create flows and ensure aeration on a very wide range of work.
  • the present invention may be applied to mixing kneader mixing robots and mixer kneading culinary mixers, cookers or not, preferably planetary type, small, medium or large sizes.
  • the apparatus may have very different sizes, the capacity of the tank may range from 3 to 1000 liters depending on whether the apparatus will be intended for domestic use, the hotel sector, bakeries or semi-industrial industries, industries and laboratories.

Description

La présente invention concerne le domaine technique des appareils de préparation culinaire utilisés notamment pour assurer la préparation de pâtes à base de farine telles que par exemple, mais non exclusivement, des pâtes à pain, des pâtes à tarte ou des viennoiseries.The present invention relates to the technical field of food preparation equipment used in particular to ensure the preparation of flour dough such as for example, but not exclusively, bread dough, pie dough or pastries.

Dans le domaine ci-dessus, il est connu de mettre en oeuvre un appareil de préparation culinaire, également appelé robot ménager de type planétaire ou batteur mélangeur, comprenant un châssis de pied qui supporte une cuve ou un récipient de mélange, à l'intérieur duquel les ingrédients à mélanger seront disposés. L'appareil comporte également un châssis de tête comprenant en outre un bras pivotant dont l'extrémité libre, destinée être placée au-dessus de la cuve, comprend des moyens de maintien et d'entraînement en rotation d'au moins un outil de mélange interchangeable, ce dernier pouvant être un crochet pour les pâtes, une palette pour les crèmes ou un fouet pour les liquides. Dans le cas de la préparation de pâtes épaisses visco-élastiques telles que des pâtes à pain, l'outil de mélange généralement utilisé est une sorte de bras en L, souvent dénommé crochet, permettant d'assurer un pétrissage de la pâte. Cependant, ce type d'outils ne permet pas toujours d'obtenir une pâte à pain de qualité satisfaisante. Ce défaut de qualité semble notamment pouvoir être mis au compte du pétrissage réalisé par l'outil en L, un bon pétrissage étant complexe.In the above field, it is known to implement a food preparation apparatus, also called planetary type food processor or mixer, comprising a foot frame which supports a tank or a mixing container, inside. which ingredients to mix will be arranged. The apparatus also comprises a head frame further comprising a pivoting arm whose free end, intended to be placed above the tank, comprises means for holding and driving in rotation of at least one mixing tool interchangeable, the latter may be a hook for pasta, a palette for creams or a whip for liquids. In the case of the preparation of thick viscoelastic pastes such as bread dough, the mixing tool generally used is a kind of L-shaped arm, often called a hook, to ensure kneading of the dough. However, this type of tool does not always make it possible to obtain a bread dough of satisfactory quality. This lack of quality seems to be able to be accounted for the kneading performed by the L tool, a good kneading being complex.

Afin d'améliorer les performances de pétrissage, une demande de brevet FR 2 710 551 a proposé d'assurer le mélange des ingrédients et le pétrissage de la pâte au moyen de deux outils de mélange. Un premier outil est immobile par rapport au récipient de mélange et présente une forme en L. Le deuxième outil est mobile en rotation par rapport au récipient de mélange et possède une forme en G. Les deux outils de mélange sont en outre adaptés pour que pendant la rotation de l'outil en G la branche horizontale de l'outil en L passe au travers de la boucle du G.In order to improve kneading performance, a patent application FR 2 710 551 a proposed mixing the ingredients and kneading the dough using two mixing tools. A first tool is stationary with respect to the mixing container and has an L shape. The second tool is rotatable relative to the mixing container and has a G shape. The two mixing tools are further adapted so that during the rotation of the tool in G the horizontal branch of the tool in L passes through the loop of G.

Toujours dans le but d'améliorer les performances de pétrissage, un brevet américain US 5 556 201 a proposé de mettre en oeuvre deux outils de formes et de mouvements différents de ceux de la demande française précitée. Ainsi, un premier outil de mélange se présente sous la forme d'une spatule plate ajourée, aussi dénommée palette ou feuille, s'étendant dans un plan vertical et possède, à l'intérieur de la cuve, un mouvement de type planétaire résultant de la rotation du premier outil sur lui-même autour d'un axe vertical de rotation secondaire vertical combinée à une rotation de l'axe secondaire autour d'un axe vertical de rotation principal confondu avec l'axe central de la cuve. Le deuxième outil est réalisé sous la forme d'une barre racleuse, dénommé racloir, tournant de manière synchrone au premier outil autour de l'axe rotation principal en étant située à proximité immédiate de la paroi de la cuve de manière à en décoller la pâte en cours de pétrissage. Un tel racloir présente notamment l'avantage d'éviter le croutage des substances collant à la paroi lorsque l'appareil est muni de moyens de chauffage de la cuve.
D'autres appareils de préparation culinaire sont décrits dans les documents US-A-4946285 et DE 906921 .Still with the aim of improving kneading performance, a US patent US 5,556,201 to proposed to implement two tools of forms and movements different from those of the aforementioned French application. Thus, a first mixing tool is in the form of a flat perforated spatula, also called pallet or sheet, extending in a vertical plane and has, inside the tank, a planetary type movement resulting from the rotation of the first tool on itself about a vertical secondary vertical axis of rotation combined with a rotation of the secondary axis about an axis vertical rotation principal confused with the central axis of the tank. The second tool is made in the form of a scraper bar, called scraper, rotating synchronously to the first tool around the main rotation axis being located in the immediate vicinity of the wall of the tank so as to take off the dough in the process of kneading. Such a scraper has the particular advantage of avoiding crusting sticky substances to the wall when the device is provided with heating means of the tank.
Other food preparation devices are described in the documents US Patent 4946285 and DE 906921 .

Cependant, l'inventeur a constaté que les appareils à deux outils tels que ceux évoqués ci-dessus ne permettaient pas toujours d'obtenir un bon pétrissage de la pâte. L'inventeur a alors eu le mérite de mettre en évidence que ce défaut de pétrissage pouvait notamment être mise au compte de la forme et du mouvement relatif des outils. L'inventeur a alors a entamé de longs travaux recherches et d'essais en vue d'obtenir un appareil de préparation culinaire pétrisseur et des outils offrants une qualité de pétrissage meilleure que celle des appareils et outils connus à ce jour, notamment dans le domaine des robots planétaires.However, the inventor has found that devices with two tools such as those mentioned above did not always make it possible to obtain a good kneading of the dough. The inventor then had the merit of highlighting that this lack of kneading could in particular be taken into account the shape and relative movement of the tools. The inventor then began extensive research and testing to obtain a dough preparation apparatus and tools offering kneading quality better than the devices and tools known to date, especially in the field planetary robots.

Afin d'atteindre ces objectifs l'invention concerne, un appareil de préparation culinaire, notamment pour la préparation de pâtes à base de farine, comprenant un châssis supportant:

  • un récipient de mélange, dit cuve, comprenant une ouverture par laquelle peuvent être introduits des ingrédients,
  • un premier outil de travail comportant une tête reliée à des moyens d'entrainement en rotation de la tête sur elle-même autour d'un axe S, le premier outil de travail comportant une branche de travail comprenant une partie active venant au contact des ingrédients à malaxer,
caractérisé en ce que :
  • l'appareil comporte également un deuxième outil de travail, dit contre-outil, fixé sur un plateau entrainé en rotation autour d'un axe P, le contre-outil possédant une branche de travail présentant une partie active venant au contact des ingrédients à malaxer, la partie active de la branche de travail venant à proximité de la trajectoire parcourue par la partie active du premier outil de travail de manière à ce que le contre-outil et le premier outil de travail interagissent sur les ingrédients à malaxer dans la cuve ;
  • et en ce que le premier outil de travail est entrainé en rotation autour de l'axe P.
In order to achieve these objectives, the invention relates to a food preparation apparatus, in particular for the preparation of pasta made from flour, comprising a frame supporting:
  • a mixing vessel, said vessel, comprising an opening through which ingredients can be introduced,
  • a first working tool comprising a head connected to means for rotating the head on itself about an axis S, the first working tool comprising a working branch comprising an active part coming into contact with the ingredients to knead,
characterized in that
  • the apparatus also comprises a second working tool, said counter-tool, fixed on a plate driven in rotation about an axis P, the counter-tool having a working branch having an active part coming into contact with the ingredients to be kneaded the active part of the working limb coming close to the path traversed by the active part of the first working tool so that the counter-tool and the first working tool interact on the ingredients to be kneaded in the tank;
  • and in that the first working tool is rotated about the axis P.

Lors de la mise en oeuvre de l'appareil de préparation culinaire et de ses outils conformes à l'invention, il a été constaté que, dans le cas de la préparation de pâte, pour une même quantité et qualité d'ingrédients l'invention permettait, de façon surprenante, d'obtenir une pâte mieux mélangée et pétrie que la pâte obtenue au moyen d'un seul outil de mélange généralement en forme de L.During the implementation of the food preparation apparatus and its tools according to the invention, it has been found that, in the case of the preparation of dough, for the same quantity and quality of ingredients the invention surprisingly allowed to obtain a paste better mixed and kneaded than the paste obtained by means of a single mixing tool generally in the form of L.

Une explication possible pour ce meilleur résultat est la coopération du premier outil de travail et du contre-outil qui travaillent en synergie avec des jeux réduits de passage entre eux de sorte que leurs actions conjointes à vitesse lente, pendant le mélange et le pétrissage, permettent de successivement étirer, replier la pâte, laminer et créer des flux avec aération, tout en respectant les fibres des pâtes visco-élastiques extrêmement fragiles.One possible explanation for this best result is the cooperation of the first working tool and the counter-tool working in synergy with reduced sets of passage between them so that their joint actions at slow speed, during mixing and kneading, allow to successively stretch, fold the dough, roll and create flow with ventilation, while respecting the fibers of viscoelastic pasta extremely fragile.

Selon une caractéristique de l'invention visant à améliorer cette coopération et le pétrissage, le contre-outil présente une partie inférieure possédant une forme épousant la forme de la trajectoire balayée par la partie inférieure du premier outil de travail et se terminant avantageusement par une pointe pouvant s'écarter de la trajectoire du premier outil de travail. Une telle pointe à l'extrémité du contre-outil présente l'avantage de percer la toile de la pâte lors du pétrissage pour diriger et faciliter l'écoulement du flux de la pâte.According to a feature of the invention to improve this cooperation and kneading, the counter-tool has a lower portion having a shape matching the shape of the path swept by the lower part of the first work tool and ending advantageously with a tip may deviate from the path of the first work tool. Such a tip at the end of the counter-tool has the advantage of piercing the fabric of the dough during kneading to direct and facilitate the flow of the flow of the dough.

Dans le même sens, selon une autre caractéristique de l'invention, les axes de rotation S et P sont parallèles.In the same sense, according to another characteristic of the invention, the axes of rotation S and P are parallel.

Selon encore une autre caractéristique de l'invention, l'emplacement et la forme du premier outil de travail et du contre-outil sont adaptés pour que le contre-outil se situe à la périphérie du premier outil de travail lors de la rotation de ce dernier.According to yet another characteristic of the invention, the location and the shape of the first working tool and the counter-tool are adapted so that the counter-tool is located at the periphery of the first working tool during the rotation of this tool. latest.

Selon une autre caractéristique de l'invention visant également à améliorer cette coopération et le travail combiné des outils, l'appareil est adapté pour que le premier outil de travail passe régulièrement à proximité du contre-outil de manière à induire notamment un effet de laminage, étirage et cisaillement, dans le cas de préparation de pâte, avec aération, favorable à la création de flux harmonieux. Dans cet esprit, pendant le mouvement des outils, la distance horizontale minimale entre le premier outil de travail et le contre-outil pourra être inférieure à 10 mm et de préférence comprise entre 2 à 6 mm.According to another characteristic of the invention also aimed at improving this cooperation and the combined work of the tools, the apparatus is adapted so that the first working tool passes regularly close to the counter-tool so as to induce in particular a rolling effect. , stretching and shearing, in the case of dough preparation, with aeration, favorable to the creation of harmonious flows. In this spirit, during the movement of the tools, the minimum horizontal distance between the first working tool and the counter-tool may be less than 10 mm and preferably between 2 to 6 mm.

Dans le même esprit, selon une caractéristique de l'invention, en position de mélange et lorsque la surface interne concave de la branche de travail du contre-outil est en regard de la surface externe convexe de la branche de travail du premier outil de travail, la distance horizontale séparant ces deux surfaces est comprise entre 1 mm et 10 mm et de préférence comprise entre 2 et 6 mm.In the same spirit, according to a feature of the invention, in the mixing position and when the concave inner surface of the working arm of the counter-tool is opposite the convex outer surface of the working arm of the first working tool , the horizontal distance separating these two surfaces is between 1 mm and 10 mm and preferably between 2 and 6 mm.

Selon encore une autre caractéristique de l'invention visant à optimiser le travail combiné, d'une part, du contre-outil et du premier outil de travail et, d'autre part, du contre-outil, du premier outil de travail et de la paroi interne de la cuve, l'appareil de préparation culinaire selon l'invention pourra être réalisé de manière que pendant le mouvement des outils :

  • la distance horizontale minimale entre le premier outil de travail et la paroi interne de la cuve est inférieure à 10 mm, et de préférence comprise entre 2 et 4 mm selon le volume de la cuve, la distance entre le premier outil de travail et le fond de la cuve étant de préférence comprise entre 0,5 et 2 mm.
  • la distance horizontale minimale entre le contre-outil et la paroi interne de la cuve est supérieure à 20 mm.
According to yet another feature of the invention for optimizing the combined work, on the one hand, the counter-tool and the first working tool and, on the other hand, the counter-tool, the first tool and work tool. the inner wall of the tank, the food preparation apparatus according to the invention can be made so that during the movement of the tools:
  • the minimum horizontal distance between the first working tool and the inner wall of the tank is less than 10 mm, and preferably between 2 and 4 mm depending on the volume of the tank, the distance between the first working tool and the bottom of the tank being preferably between 0.5 and 2 mm.
  • the minimum horizontal distance between the counter-tool and the inner wall of the tank is greater than 20 mm.

Il est à noter que cette caractéristique privilégie la coopération entre le contre-outil et le premier outil de travail plutôt qu'un effet racleur du contre-outil qui se trouve être quasiment nul voire inexistant en raison de la distance entre le contre-outil et la paroi interne de la cuve. Par ailleurs, le contre-outil présente l'avantage de travailler en synergie avec le premier outil de travail à vitesse lente pour le pétrissage des pâtes mais peut également être utilisé pour travailler en synergie avec une palette ou un fouet pour le battage des crèmes ou le fouettage des liquides à des vitesses plus élevées.It should be noted that this characteristic favors the cooperation between the counter-tool and the first working tool rather than a scraping effect of the counter-tool which is almost nil or nonexistent due to the distance between the counter-tool and the inner wall of the tank. Moreover, the counter-tool has the advantage of working in synergy with the first slow-speed working tool for kneading pasta but can also be used to work in synergy with a palette or a whip for the threshing of creams or whipping liquids at higher speeds.

Selon l'invention, différents types de mouvements ou trajectoires pour les outils de mélange peuvent être envisagés.According to the invention, different types of movements or trajectories for the mixing tools can be envisaged.

Dans une forme préférée mais non exclusive de réalisation de l'appareil de préparation culinaire selon l'invention, le mouvement du premier outil de travail est un mouvement rotation composé, de type planétaire, le premier outil de travail tournant, d'une part, sur lui même autour de son axe de rotation S et, d'autre part, en même temps que le plateau, autour de l'axe P qui n'est pas confondu avec l'axe de rotation S.In a preferred but non-exclusive embodiment of the food preparation apparatus according to the invention, the movement of the first working tool is a compound rotation movement, planetary type, the first working tool rotating, on the one hand, on itself around its axis of rotation S and, on the other hand, at the same time as the plate, around the axis P which is not coincident with the axis of rotation S.

Selon une caractéristique de cette variante préférée, le plateau est adapté pour que l'axe de rotation (P) du contre-outil soit, en position de mélange, à proximité voire confondu avec le centre ou l'axe central de la cuve.According to a feature of this preferred embodiment, the plate is adapted so that the axis of rotation (P) of the counter-tool is, in the mixing position, near or even coincident with the center or the central axis of the tank.

Il est à noter que les moyens d'entraînement des outils peuvent être situés soient au-dessus de la cuve soit en dessous de cette dernière qui présentera alors des ouvertures permettant le passage des outils et leur adaptation sur des moyens de maintien et d'entraînement. À cet égard et doit être remarqué que selon l'invention les outils de mélange sont de préférence amovibles de manière à faciliter leur nettoyage et celui de l'appareil.It should be noted that the drive means of the tools may be located either above the tank or below it, which will then have openings allowing the passage of the tools and their adaptation on means of maintenance and training. In this respect and should be noted that according to the invention the mixing tools are preferably removable so as to facilitate their cleaning and that of the device.

Selon une variante de réalisation de la forme préférée de l'invention, les moyens d'entrainement en rotation du premier outil de travail et de la plateau sont portés par un bras mobile solidaire du châssis et adaptés pour être, en position de mélange, placés au dessus de la cuve.According to an alternative embodiment of the preferred form of the invention, the rotational drive means of the first working tool and the plate are carried by a movable arm integral with the chassis and adapted to be, in the mixing position, placed above the tank.

Dans le cadre de cette variante et selon une caractéristique de l'invention, le premier outil de travail est un crochet dont la branche de travail possède une extrémité inférieure recourbée adaptée pour passer à proximité du centre de la cuve et de préférence dépasser le centre avec une forme d'extrémité élargie en forme de cuillère, ou de spatule, pour ramasser la pâte.In the context of this variant and according to a feature of the invention, the first working tool is a hook whose working limb has a curved lower end adapted to pass near the center of the tank and preferably exceed the center with an expanded end shape spoon-shaped, or spatula, to pick up the dough.

Selon une caractéristique de la forme préférée de réalisation de l'appareil de préparation culinaire, l'axe de rotation (S) est situé à une distance de l'axe de rotation (P) supérieure à 7 mm, une telle distance étant variable en fonction du volume et du diamètre de la cuve, du rapport des vitesses souhaités entre la rotation du premier outil de travail et du contre-outil ainsi que du nombre de points de passage en cuve devant être balayés par le premier outil de travail.According to a characteristic of the preferred embodiment of the food preparation apparatus, the axis of rotation (S) is located at a distance from the axis of rotation (P) greater than 7 mm, such a distance being variable in a function of the volume and diameter of the vessel, the ratio of the desired speeds between the rotation of the first work tool and the counter-tool and the number of passage points in the tank to be scanned by the first work tool.

Selon une autre caractéristique de la forme préférée de réalisation de l'appareil de préparation culinaire, le contre-outil possède une concavité orientée vers l'axe de rotation (P).According to another characteristic of the preferred embodiment of the food preparation apparatus, the counter-tool has a concavity oriented towards the axis of rotation (P).

Selon encore une autre caractéristique de la forme préférée de réalisation de l'appareil de préparation culinaire, la surface interne concave du contre-outil enveloppe en partie la surface balayée par la surface externe convexe du premier outil de travail lors de sa rotation.According to yet another characteristic of the preferred embodiment of the food preparation apparatus, the concave inner surface of the counter-tool partly envelops the surface swept by the convex outer surface of the first work tool during its rotation.

Selon une autre caractéristique de l'invention, le premier outil de travail est un crochet de pétrissage, une palette pour le battage des crèmes ou un fouet pour le fouettage des liquides.According to another characteristic of the invention, the first working tool is a kneading hook, a palette for threshing creams or a whip for whipping liquids.

Selon une caractéristique de l'invention, le premier outil de travail est un crochet de malaxage, le crochet et le contre-outil étant réalisés de manière à présenter une section droite transversale allongée, de préférence oblongue ou ovale pour offrir une plus grande résistance mécanique, qui confère à leur branche de travail, notamment à la partie active destinée à être au contact des ingrédients, une forme aplatie aérodynamique par opposition aux formes des outils connus présentant une section droite transversale circulaire ou carrée. De manière préférentielle, la section droite transversale allongée du premier outil de travail et du contre-outil comporte une face interne concave et une face externe convexe. Selon une variante de réalisation de l'invention, la branche de travail du contre-outil possède une largeur et une épaisseur qui décroissent depuis l'embase d'adaptation jusqu'à l'extrémité du contre-outil opposée à l'embase d'adaptation.According to a characteristic of the invention, the first working tool is a mixing hook, the hook and the counter-tool being made to have an elongate transverse cross-section, preferably oblong or oval to provide greater mechanical resistance, which gives their working limb, in particular to the active part intended to be in contact with the ingredients, an aerodynamic flattened shape as opposed to the shapes of known tools having a circular or square cross section. Preferably, the elongated transverse cross section of the first working tool and the counter-tool comprises a concave inner face and a convex outer face. According to an alternative embodiment of the invention, the working arm of the counter-tool has a width and a thickness which decreases from the adapter base to the end of the counter-tool opposite to the base of the tool. adaptation.

Selon une autre variante de réalisation de l'invention, la branche de travail du crochet possède une largeur et une épaisseur qui décroissent depuis une embase de fixation sur le plateau jusqu'à l'extrémité opposée du crochet.According to another embodiment of the invention, the working leg of the hook has a width and a thickness which decreases from a fixing base on the plate to the opposite end of the hook.

Selon encore une autre variante de réalisation de l'invention, l'extrémité du crochet, opposée à la tête, est recourbée vers la tête et élargie en extrémité comme une cuillère ou une spatule, avantageusement remontante, une telle caractéristique présentant l'avantage d'aérer la pâte et d'avoir une meilleure prise des petites quantités de pâte.According to yet another embodiment of the invention, the end of the hook, opposite to the head, is bent towards the head and widened at the end like a spoon or spatula, advantageously upward, such a characteristic having the advantage of aerate the dough and have a better hold of small amounts of dough.

Selon une caractéristique de l'invention, la surface interne concave du contre-outil possède, vue dans le plan vertical médian un rayon de courbure supérieur au rayon de courbure de la surface externe convexe du crochet.According to one characteristic of the invention, the concave inner surface of the counter-tool has, seen in the median vertical plane, a radius of curvature greater than the radius of curvature of the convex outer surface of the hook.

Bien entendu les différentes caractéristiques, variantes et formes de réalisation de l'invention peuvent être associées les unes avec les autres selon diverses combinaisons dans la mesure où elles ne sont pas incompatibles ou exclusives les unes des autres.Of course, the various features, variants and embodiments of the invention may be associated with each other in various combinations to the extent that they are not incompatible or exclusive of each other.

Par ailleurs, diverses autres caractéristiques de l'invention ressortent de la description annexée, effectuée en référence aux dessins qui illustrent une forme non limitative de réalisation d'un appareil de préparation culinaire et de ses outils conformes à l'invention.

  • La figure 1 est une perspective générale d'un appareil de préparation culinaire selon l'invention sans outils de travail.
  • La figure 2 est une vue de côté de l'appareil de préparation culinaire illustré à la figure 1 et équipé des outils de mélange selon l'invention. Sur cette figure 2, la cuve de l'appareil est coupée de manière à permettre une vue de profil des outils de travail.
  • La figure 3 est une perspective d'une forme de réalisation de deux outils de travail amovibles selon l'invention destinés à équiper l'appareil de préparation culinaire tel qu'illustré à la figure 1.
  • La figure 4 est une vue de profil à plus grande échelle des outils de travail.
  • La figure 4.1 est une vue de détail, en coupe, de l'outil de travail et du contre-outil.
  • Les figures 5 et 6 sont des vues analogues à la figure 3 montrant d'autres phases du mouvement des outils de travail.
Furthermore, various other features of the invention appear from the attached description, with reference to the drawings which illustrate a non-limiting embodiment of a food preparation apparatus and its tools according to the invention.
  • The figure 1 is a general perspective of a food preparation apparatus according to the invention without tools.
  • The figure 2 is a side view of the food preparation apparatus illustrated in figure 1 and equipped with mixing tools according to the invention. On this figure 2 , the tank of the apparatus is cut so as to allow a profile view of the working tools.
  • The figure 3 is a perspective of an embodiment of two removable work tools according to the invention for equipping the food preparation apparatus as illustrated in FIG. figure 1 .
  • The figure 4 is a profile view on a larger scale of work tools.
  • The figure 4.1 is a detailed view, in section, of the work tool and the counter-tool.
  • The figures 5 and 6 are similar views to the figure 3 showing other phases of the movement of work tools.

Dans une forme préférée mais non exclusive de réalisation, un appareil de préparation culinaire selon l'invention, tel qu'illustré à la figure 1 et désigné dans son ensemble par la référence A, comprend un châssis 1 qui supporte un récipient de mélange amovible 2. Selon l'exemple illustré, le récipient 2 est réalisé sous la forme d'une cuve symétrique par rapport à un axe central vertical. L'appareil culinaire A comprend en outre un bras 3 solidaire du châssis 1 et mobile en rotation selon un axe sensiblement horizontal entre une position de travail ou de mélange M telle qu'illustrée figure 1 et une position relevée, non représentée, dans laquelle la cuve 2 peut être facilement retirée. Le bras 3 comprend, au niveau d'une extrémité libre située au dessus de la cuve, des moyens 4 de maintien et d'entraînement d'outils de travail, non représentés, en mouvement à l'intérieur de la cuve 2. In a preferred but non-exclusive embodiment, a food preparation apparatus according to the invention, as illustrated in FIG. figure 1 and generally designated by the reference A, comprises a frame 1 which supports a removable mixing container 2. According to the illustrated example, the container 2 is in the form of a vessel symmetrical with respect to a vertical central axis. The cooking apparatus A further comprises an arm 3 secured to the frame 1 and movable in rotation along a substantially horizontal axis between a working or mixing position M as illustrated. figure 1 and a raised position, not shown, in which the tank 2 can be easily removed. The arm 3 comprises, at a free end located above the tank, means 4 for holding and driving working tools, not shown, in motion inside the tank 2.

Selon l'exemple illustré, les moyens de maintien et d'entraînement 4 sont adaptés pour entraîner au moins un outil selon un mouvement de type planétaire. À cet effet, les moyens de maintien et d'entraînement 4 comprennent, comme le montre la figure 2 , un plateau 5 mobile en rotation sur lui-même autour d'un axe vertical de rotation P qui peut être qualifié ici de principal et qui, selon l'exemple illustré, est sensiblement confondu avec l'axe de symétrie centrale de la cuve 2 et passe sensiblement par le centre de la cuve. Le plateau 5 porte en outre une tourelle 6 excentrée contenant une bague, non représentée, d'entraînement en rotation d'un outil de travail selon un axe de rotation S qui peut être ici qualifié de secondaire et qui est, selon l'exemple illustré, parallèle à l'axe de rotation principale P. Ainsi, selon l'exemple illustré, l'axe de rotation secondaire S est situé à une distance de l'axe de rotation principal P supérieure à 7 mm, cette distance pouvant varier selon le diamètre de la cuve 2. According to the illustrated example, the holding and driving means 4 are adapted to drive at least one tool according to a planetary type movement. For this purpose, the holding and driving means 4 comprise, as shown in FIG. figure 2 A movable platen 5 for rotation on itself about a vertical axis of rotation P that can be termed principal here that, in the example shown, is substantially coincident with the axis of central symmetry of the tank 2 and passes substantially through the center of the tank. The plate 5 also carries an eccentric turret 6 containing a ring, not shown, for rotating a work tool along an axis of rotation S which can be described here as secondary and which is, according to the illustrated example parallel to the main axis of rotation P. Thus, according to the illustrated example, the secondary rotation axis S is situated at a distance from the main axis of rotation P greater than 7 mm, this distance being able to vary according to the diameter of the tank 2.

Les moyens de maintien et d'entraînement 4 sont entraînés par un moteur électrique 7 intégré au bras 3 par l'intermédiaire d'une chaîne cinématique mettant notamment en oeuvre un train d'engrenage épicycloïdal selon une conception très largement connue de l'homme du métier et ne nécessitant donc pas une plus ample description.The holding and driving means 4 are driven by an electric motor 7 integrated in the arm 3 by means of a kinematic chain in particular an epicyclic gear train according to a design widely known to those skilled in the art and therefore does not require further description.

Conformément à une caractéristique essentielle de l'invention, les moyens de maintien et d'entraînement 4 sont adaptés pour recevoir un ensemble E de deux outils de travail, conformes à l'invention, plus particulièrement illustrés aux figures 3 et 4.According to an essential characteristic of the invention, the holding and driving means 4 are adapted to receive a set E of two working tools, in accordance with the invention, more particularly illustrated in FIGS. figures 3 and 4 .

L'ensemble E est constitué d'un premier outil de travail 10, appelé crochet, et d'un deuxième outil de travail 11, appelé contre-outil, plus particulièrement conçu pour être utilisé notamment en combinaison avec le crochet 10 ce dernier pouvant toutefois être utilisé seul.The assembly E consists of a first working tool 10, called a hook, and a second working tool 11, called counter-tool, more particularly designed to be used in particular in combination with the hook 10, which may, however, to be used alone.

Le crochet 10 comprend une tête d'adaptation 12 qui présente un tourillon 13 destiné à être engagé dans la tourelle 6 de manière à assurer la fixation du crochet 10 et son entraînement en rotation sur lui-même comme cela apparaîtra par la suite. Le tourillon possède un axe vertical Δ qui, en position de mélange, se trouve aligné avec l'axe de rotation secondaire S. Le crochet 10 comprend à partir de la tête d'adaptation 12 une branche de travail 14 qui possède, au moins dans sa partie active destinée à être en contact avec les ingrédients, correspondant ici aux trois quarts inférieurs de la branche de travail 14, une forme de général hélicoïdale d'axe vertical pouvant aussi être dénommé bras spirale. Ainsi, la fibre moyenne 15 de la branche de travail 14 correspond ou décrit une portion d'hélice ayant un axe vertical décalé par rapport à l'axe du tourillon 13 qui, comme cela apparaîtra, par la suite se trouve confondu avec l'axe de rotation secondaire S lorsque le tourillon 13 est engagé dans la tourelle 6. De plus, selon l'exemple illustré, l'extrémité 16 de la branche de travail 14, opposée à la tête d'adaptation 12, et sensiblement alignée avec l'axe Δ en étant recourbée vers la tête d'adaptation 12 comme le montre la figure 4. Par ailleurs, la branche travail 14 présente, dans sa partie médiane au moins, une section droite transversale de forme générale oblongue présentant un flanc interne concave et un flanc externe convexe comme le montre le détail figure 4.1. Enfin, la largeur I10 de la branche travail 14 diminue depuis la tête d'adaptation jusqu'à proximité de l'extrémité 16 pour ensuite augmenter à nouveau au niveau de l'extrémité 16 du crochet 10 pour former une cuillère ou une spatule remontante. À cet égard, la largeur I10 de la branche de travail 14 peut posséder une valeur maximale comprise entre 10 mm et 100 mm. De la même manière, l'épaisseur e10 de la branche de travail 14 du crochet 10 pourra être comprise entre 3 mm et 50 mm selon la taille du crochet 10. Tandis que la hauteur h10 de la branche de travail 14, mesurée entre la base de la tête d'adaptation 12 et l'extrémité la plus basse de la branche 14, peut alors être comprise entre 10 cm et 150 cm selon la taille de la cuve 2.The hook 10 comprises an adaptation head 12 which has a pin 13 intended to be engaged in the turret 6 so as to ensure the attachment of the hook 10 and its rotational drive on itself as will appear later. The pin has a vertical axis Δ which, in the mixing position, is aligned with the secondary axis of rotation S. The hook 10 comprises from the adaptation head 12 a working branch 14 which has, at least in its active part intended to be in contact with the ingredients, here corresponding to the lower three quarters of the working limb 14, a form of helical general vertical axis may also be called spiral arm. Thus, the average fiber 15 of the working limb 14 corresponds to or describes a portion of a helix having a vertical axis offset with respect to the axis of the trunnion 13 which, as will appear, subsequently is merged with the axis secondary rotation S when the pin 13 is engaged in the turret 6. In addition, according to the illustrated example, the end 16 of the working limb 14, opposite the adaptation head 12, and substantially aligned with the axis Δ being curved towards the adaptation head 12 as shown in FIG. figure 4 . Moreover, the working limb 14 has, in its middle part at least, a cross section of generally oblong shape having a concave inner flank and a convex outer flank as shown in detail figure 4.1 . Finally, the width I 10 of the working limb 14 decreases from the adaptation head to near the end 16 and then increases again at the end 16 of the hook 10 to form a spoon or spatula remontante . In this regard, the width w 10 of the working arm 14 may have a maximum value of between 10 mm and 100 mm. In the same way, the thickness e 10 of the working limb 14 of the hook 10 can be understood between 3 mm and 50 mm depending on the size of the hook 10. While the height h 10 of the working limb 14, measured between the base of the adaptation head 12 and the lowest end of the branch 14, can then be between 10 cm and 150 cm depending on the size of the tank 2.

Le contre-outil 11 possède une embase de fixation 20 permettant une fixation sensiblement rigide du contre-outil 11 sur le plateau 5 réalisant ainsi une liaison complète de manière que le contre-outil 11 soit parfaitement solidaire du plateau 5 et entraîné en rotation par ce dernier. Le contre-outil 11 possède également une branche de travail 21 qui s'étend vers le bas à partir de l'embase 20. La branche travail 21 présente, en vue de profil telle qu'illustrée à la figure 4, une forme arquée au moins dans sa partie inférieure destinée à être en contact avec les aliments. Ainsi, la branche de travail 21 du contre-outil 11 possède une forme en C ouvert tandis que la branche de travail 14 du crochet 10 possède, en vue de profil, une forme en spirale légèrement fermée comme le montre par comparaison la figure 4. À cet égard, il pourra être remarqué que le rayon de courbure de la face interne 22 du contre-outil 11 est supérieur au rayon de courbure de la face externe 23 du crochet 10. Par ailleurs, la branche de travail 21 du contre-outil 11 présente également une section droite transversale sensiblement oblongue comportant une face interne concave et une face externe convexe comme le montre le détail de la figure 4.1. De plus, la largeur I11 de la branche travail diminue depuis l'embase adaptation 20 jusqu'à l'extrémité 24 pointue de la branche 21 opposée à l'embase 20, comme le montre en vue de face la figure 5. À cet égard, la largeur I11 de la branche de travail 21 peut posséder une valeur pouvant atteindre 120 mm. De la même manière, l'épaisseur e11 de la branche de travail 21 du contre-outil 11 pourra être comprise, dans une région médiane, entre 1 mm et 35 mm selon le volume de la cuve 2. Il pourra aussi être remarqué que le contre-outil 11 possède une forme arquée en vue de face. Il est à noter que le contre-outil 11 est réalisé de manière que son extrémité inférieure 24 soit sensiblement au même niveau que l'extrémité inférieure du crochet 10 lorsque le contre-outil 11 et le crochet 10 sont adaptés sur les moyens de maintien et de fixation 4 de l'appareil A. Dans une variante de réalisation, l'extrémité inférieure 24 pointue du contre-outil 11 pourra aussi être un peu plus éloignée du passage du crochet 10 pour ramasser la pâte et la ramener vers le crochet 10. The counter-tool 11 has a fastening base 20 allowing a substantially rigid attachment of the counter-tool 11 on the plate 5 thus making a complete connection so that the counter-tool 11 is perfectly integral with the plate 5 and rotated by this latest. The counter-tool 11 also has a working limb 21 which extends downwards from the base 20. The working limb 21 has, in profile view as illustrated in FIG. figure 4 , an arcuate shape at least in its lower part intended to be in contact with food. Thus, the working limb 21 of the counter-tool 11 has an open C shape while the working limb 14 of the hook 10 has, in profile, a slightly closed spiral shape, as shown by comparison with FIG. figure 4 . In this regard, it may be noted that the radius of curvature of the inner face 22 of the counter-tool 11 is greater than the radius of curvature of the outer face 23 of the hook 10. Furthermore, the working arm 21 of the counter-tool 11 also has a substantially oblong cross section with a concave inner face and a convex outer face as shown in detail in FIG. figure 4.1 . In addition, the width I 11 of the working limb decreases from the adapter base 20 to the pointed end 24 of the branch 21 opposite the base 20, as shown in front view of FIG. figure 5 . In this respect, the width 11 of the working limb 21 may have a value of up to 120 mm. In the same way, the thickness e 11 of the working limb 21 of the counter-tool 11 may be in a median region between 1 mm and 35 mm depending on the volume of the vessel 2. It may also be noted that the counter-tool 11 has an arcuate shape in front view. It should be noted that the counter-tool 11 is made so that its lower end 24 is substantially at the same level as the lower end of the hook 10 when the counter-tool 11 and the hook 10 are fitted on the holding means and 4 of an apparatus A. In an alternative embodiment, the pointed lower end 24 of the counter-tool 11 may also be a little further away from the passage of the hook 10 to pick up the dough and bring it back to the hook 10.

A titre d'exemple, les outils de mélange 10 et 11 ainsi constitués sont mis en oeuvre de la manière suivante. Tout d'abord, le contre-outil 11 est adapté sur le plateau 5 au moyen, par exemple, d'ergots 26 venant s'engager dans des alésages complémentaires aménagés dans le plateau 5 et non visibles aux figures. Le contre-outil 11 est alors parfaitement immobilisé par rapport au plateau 5 dont il se trouve solidaire en rotation. Ensuite, l'adaptation du crochet 10 est réalisée en venant engager le tourillon 13 dans la tourelle 6. Il est à noter que le mode de fixation et d'entraînement d'un outil tournant tel que le crochet 10 est parfaitement connu de l'homme du métier et ne nécessite donc pas de plus amples explications.By way of example, the mixing tools 10 and 11 thus formed are used in the following manner. First, the counter-tool 11 is adapted to the plate 5 at means, for example, pins 26 engaging in complementary bores formed in the plate 5 and not visible in the figures. The counter-tool 11 is then perfectly immobilized relative to the plate 5 which it is integral in rotation. Then, the adaptation of the hook 10 is performed by engaging the pin 13 in the turret 6. It should be noted that the method of fixing and driving a rotating tool such as the hook 10 is perfectly known to the skilled in the art and therefore does not require further explanation.

La mise en marche du moteur électrique 7 associé aux moyens de maintien et d'entraînement 4, assure une mise en rotation du contre-outil 11 autour de l'axe de rotation principale P dans le sens de la flèche F1. Compte tenu de sa fixation complète sur le plateau 5, le contre-outil 11 conserve toujours la même orientation relative par rapport à la cuve 2 pendant cette rotation, la concavité du contre-outil 11 étant orientée vers l'axe P. The start of the electric motor 7 associated with the holding and driving means 4, ensures a rotation of the counter-tool 11 around the main axis of rotation P in the direction of the arrow F1. Given its complete fixation on the plate 5, the counter-tool 11 always retains the same relative orientation with respect to the tank 2 during this rotation, the concavity of the counter-tool 11 being oriented towards the axis P.

Concomitamment à la rotation du contre-outil 11, le crochet 10 connaît un mouvement de rotation complexe résultant, d'une part, de la rotation du crochet 10 sur lui-même autour de l'axe de rotation secondaire S et, d'autre part, de la rotation de cet axe secondaire S autour de l'axe de rotation principal P. Ainsi, le crochet 10 est animé d'un mouvement de rotation sur lui-même, indiqué la flèche F2 à une vitesse supérieure à la vitesse de la rotation d plateau 5 et donc du contre-outil 11. In sera remarqué que le sens de rotation du crochet sur lui-même 10 est préférentiellement contraire au sens de rotation du contre-outil 11. Selon l'exemple illustré le contre-outil 11 possède un sens de rotation anti-horaire tandis que le crochet 10 possède un sens de rotation sur lui-même horaire.Concomitant with the rotation of the counter-tool 11, the hook 10 experiences a complex rotational movement resulting, on the one hand, from the rotation of the hook 10 on itself around the secondary rotation axis S and, on the other hand, on the other hand, the rotation of this secondary axis S around the main axis of rotation P. Thus, the hook 10 is driven in a rotational movement on itself, indicated arrow F 2 at a speed greater than the speed the rotation of the plate 5 and therefore the counter-tool 11. In will be noted that the direction of rotation of the hook on itself 10 is preferably opposite to the direction of rotation of the counter-tool 11. According to the illustrated example the counter-tool tool 11 has a counterclockwise direction of rotation while the hook 10 has a direction of rotation on itself hourly.

En outre, les conformations du crochet 10 et du contre-outil 11 sont telles que la distance minimale d entre la face externe convexe 23 du crochet et la face interne concave 22 du contre-outil 11 est inférieure à 10 mm. De même, les conformations du crochet 10 et de la cuve 2 ainsi que la position de la tourelle 6 sur le plateau 5 sont telles que la distance horizontale minimale D10 , entre la face externe convexe 23 du crochet 10 et la paroi interne de la cuve 2, est inférieure à 8 mm. De plus, il sera remarqué que le contre-outil 11 se trouve disposé sur le plateau 5 en périphérie du crochet 10 et enveloppe en partie le volume décrit par la rotation de la face externe 23 du crochet, le contre-outil 11 se trouvant toutefois à l'intérieur du volume balayé par le crochet 10 dans la cuve 2 lors de la rotation du plateau 5. In addition, the conformations of the hook 10 and counter-tool 11 are such that the minimum distance d between the convex outer face 23 of the hook and the concave inner face 22 of the counter-tool 11 is less than 10 mm. Similarly, the conformations of the hook 10 and the tank 2 and the position of the turret 6 on the plate 5 are such that the minimum horizontal distance D 10 , between the convex outer face 23 of the hook 10 and the inner wall of the tank 2, is less than 8 mm. In addition, it will be noted that the counter-tool 11 is disposed on the plate 5 at the periphery of the hook 10 and partially envelops the volume described by the rotation of the outer face 23 of the hook, the counter-tool 11 being however inside the volume swept by the hook 10 in the tank 2 during the rotation of the plate 5.

La mise en oeuvre des outils de mélange selon l'invention permet d'obtenir, notamment dans le cas du pétrissage d'une pâte à pain, une bonne qualité de pâte et donc de mie. Cette bonne qualité semble résulter de la coopération entre le contre-outil et le crochet, notamment de la manière dont le contre-outil 11 et le crochet 10 interagissent pour étirer, laminer et replier successivement la pâte en formation ainsi que du léger effet de cisaillement intervenant, en respectant les fibres de la pâte, lorsque le crochet 10 passe à proximité du contre-outil 11. The use of the mixing tools according to the invention makes it possible to obtain, particularly in the case of kneading a bread dough, a good quality of dough and therefore of crumb. This good quality seems to result from the cooperation between the counter-tool and the hook, in particular the way the counter-tool 11 and the hook 10 interact to stretch, roll and fold successively the dough in formation as well as the slight shearing effect intervening, respecting the fibers of the dough, when the hook 10 passes close to the counter-tool 11.

Il pourra être remarqué, que selon l'exemple illustré, l'extrémité inférieure pointue du contre-outil 11 est orientée vers l'avant eu égard au sens de rotation dudit contre-outil 11 pour orienter le flux vers le crochet 10. À cet égard, il pourrait également être envisagé de mettre en oeuvre un contre-outil qui ne soit pas arqué mais droit ou incliné en vue de face pour favoriser l'écoulement des flux.It may be noticed that, according to the illustrated example, the pointed lower end of the counter-tool 11 is oriented forward with respect to the direction of rotation of said counter-tool 11 to direct the flow towards the hook 10. At this point, In this respect, it could also be envisaged to implement a counter-tool that is not arched but straight or inclined in front view to promote flow flow.

Bien entendu diverses autres modifications peuvent être apportées à l'invention dans le cadre des revendications annexées.
Ainsi, dans une variante de réalisation non représentée, le crochet pourra être remplacé par une palette pour le battage des crèmes, ou par un fouet pour le fouettage des liquides tournant en synergie avec le contre-outil pour créer des flux et assurer une aération sur une très large plage de travail.
De plus, la présente invention pourra être appliquée sur les robots pétrins batteurs mélangeurs et les préparateurs culinaires pétrisseurs batteurs mélangeurs, cuiseurs ou non, préférentiellement de type planétaire, de petite, moyenne ou grande tailles. Ainsi, l'appareil pourra présenter des tailles très différentes, la contenance de la cuve pouvant aller de 3 à 1000 litres suivant que l'appareil sera destiné à une utilisation domestique, aux secteur hôtelier, aux boulangeries artisanales ou semi-industrielles, aux industries et laboratoires.Of course various other modifications may be made to the invention within the scope of the appended claims.
Thus, in an alternative embodiment not shown, the hook may be replaced by a palette for threshing creams, or by a whip for whipping liquids rotating in synergy with the counter-tool to create flows and ensure aeration on a very wide range of work.
In addition, the present invention may be applied to mixing kneader mixing robots and mixer kneading culinary mixers, cookers or not, preferably planetary type, small, medium or large sizes. Thus, the apparatus may have very different sizes, the capacity of the tank may range from 3 to 1000 liters depending on whether the apparatus will be intended for domestic use, the hotel sector, bakeries or semi-industrial industries, industries and laboratories.

Claims (14)

  1. A food preparation appliance, especially for preparing flour-based dough, comprising a frame (1) supporting:
    - a mixing container, referred to as the vessel (2), comprising an opening through which ingredients can be introduced,
    - a first working tool (10), having a head (12) connected to drive means for rotating said head on itself about an axis (S), the first working tool (10) comprising a working arm (14) including an active portion coming into contact with the ingredients to be kneaded in the vessel,
    - said appliance further comprising a second working tool, referred to as the counter-tool, (11) attached to a plate (5) driven in rotation about an axis (P), the counter-tool having a concave side facing towards the axis of rotation (P) and comprises a working arm (21) having an active portion coming into contact with the ingredients to be kneaded and having a shape matching the shape of the trajectory taken by the lower portion (14) of the first working tool (10) and advantageously ending in a tip liable to deviate from the trajectory of the first working tool (10),
    - the active portion of the working arm (21) coming close to the trajectory taken by the active portion of the first working tool (10),
    - the first working tool (10) being driven in rotation about the axis (P).
    characterised in that:
    - the active portion of the first working tool (10) regularly passes close to the active portion of the counter-tool (11) such that the counter-tool (11) and the first working tool (10) interact with the ingredients to be kneaded in the vessel.
  2. A food preparation appliance according to claim 1, characterised in that the axes of rotation (P) and (S) are parallel.
  3. A food preparation appliance according to any one of claims 1 to 2, characterised in that the location and the shape of the first working tool (10) and of the counter-tool (11) are designed such that the counter-tool (11) is located at the periphery of the first working tool (10) during the rotation thereof.
  4. A food preparation appliance according to any one of claims 1 to 3, characterised in that, during the movement of the tools, the minimum distance between the active portions of the working arms of the counter-tool (11) and of the first working tool (10) is less than 10 mm and preferably between 2 and 6 mm.
  5. A food preparation appliance according to any one of claims 1 to 4, characterised in that the drive means for rotating the first working tool (10) and the plate (5) are carried by a movable arm (3) integral with the frame (1) and designed to be placed above the vessel (2), in the mixing position.
  6. A food preparation appliance according to claim 5, characterised in that the first working tool (10) is a hook whose working arm has a bent lower end, in the shape of a spoon or a spatula, capable of passing close to the centre of the vessel (2), and preferably past the centre.
  7. A food preparation appliance according to one of claims 1 to 6, characterised in that the movement of the first working tool (10) is a compound rotation movement, of planetary type, the first working tool (10) rotating on the one hand on itself about its axis of rotation (S) and on the other hand, together with the plate, about the axis of rotation (P), the axis of rotation (P) not coinciding with the axis of rotation (S).
  8. A food preparation appliance according to claim 7, characterised in that the plate is designed such that the axis of rotation (P) of the counter-tool (11), in the mixing position, is close to, or even coincides with the centre of the vessel (2).
  9. A food preparation appliance according to one of claims 1 to 8, characterised in that the working arm of the counter-tool (11) has a width and a thickness which decrease from a base (20) for fixing to the plate (5) up to the opposite end of the counter-tool (11).
  10. A food preparation appliance according to one of claims 1 to 9, characterised in that the first working tool is a kneading hook (10).
  11. A food preparation appliance according to claim 10, characterised in that the first working tool is a hook (10) and in that the working arm of the hook (10) has a width and a thickness which decrease from the head (12) up to the end of the hook (10) opposite the head (12).
  12. A food preparation appliance according to one of claims 1 to 11, characterised in that the counter-tool (11) has a concave inner surface (22) having, when seen in a median vertical plane, a radius of curvature greater than the radius of curvature of the convex outer surface (23) of the first working tool (10).
  13. A food preparation appliance according to one of claims 1 to 12, characterised in that, in the mixing position, the working arm of the counter-tool (11) has a concave inner surface (22) which faces a convex outer surface (23) of the working arm of the first working tool (10), the horizontal distance separating these two surfaces ranging between 1 mm and 5 mm.
  14. A food preparation appliance according to one of claims 1 to 13, characterised in that the working arms of the first working tool (10) and of the counter-tool (11) have a substantially oblong transverse cross-section having a concave inner face and a convex outer face.
EP10810780.6A 2009-12-22 2010-12-21 Kitchen appliance, in particular for preparing flour-based dough Active EP2516046B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0906253A FR2954181B1 (en) 2009-12-22 2009-12-22 CULINARY PREPARATION APPARATUS, IN PARTICULAR FOR THE PREPARATION OF FLOUR-BASED PASTA
PCT/FR2010/052866 WO2011086291A1 (en) 2009-12-22 2010-12-21 Kitchen appliance, in particular for preparing flour-based dough

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EP2516046A1 EP2516046A1 (en) 2012-10-31
EP2516046B1 true EP2516046B1 (en) 2013-07-17

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CN (1) CN102695556B (en)
BR (1) BR112012015547B1 (en)
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WO (1) WO2011086291A1 (en)

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FR2994815B1 (en) * 2012-09-06 2014-09-26 Seb Sa CULINARY PREPARATION APPARATUS COMPRISING A PUNCH HOOK DRAWN BY A PLANET MOVEMENT
GB2508883B (en) * 2012-12-14 2017-05-31 Kenwood Ltd Food mixing arrangement
CN103110365A (en) * 2013-02-25 2013-05-22 苏州农业职业技术学院 Food mixing machine
CN103478184B (en) * 2013-09-30 2016-02-24 江门市新会区浩信电器制造有限公司 A kind of double-hook type dough hook
FR3035581B1 (en) * 2015-04-30 2017-05-19 Seb Sa CULINARY PREPARATION ELECTRICAL APPLIANCE
CN105265507B (en) * 2015-10-27 2017-07-25 江门市新会区浩信电器制造有限公司 Dough kneeding machine
CN107865014B (en) * 2016-09-27 2023-05-16 惠阳亚伦塑胶电器实业有限公司 Two-way flour stirring device
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BR112012015547A2 (en) 2016-05-03
CN102695556A (en) 2012-09-26
CN102695556B (en) 2014-08-20
EP2516046A1 (en) 2012-10-31
BR112012015547B1 (en) 2019-08-20
WO2011086291A1 (en) 2011-07-21
FR2954181B1 (en) 2014-02-21
FR2954181A1 (en) 2011-06-24

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