DE202021002124U1 - Extension insert for inclusion in a preparation vessel of a food processor and kitchen machine with the extension insert - Google Patents

Abstract

Extension insert for receiving in a preparation vessel of a kitchen appliance, into which a rotary element protrudes which can be rotated around an axis of rotation by means of an electric motor, characterized in that the insert comprises a container which can be connected to the rotary element via a coupling element and which can be rotated within the preparation vessel is.

Description

Technological background

The invention relates to an extension insert for receiving in a preparation vessel of a kitchen appliance, into which a rotary element protrudes, which can be rotated about an axis of rotation by means of an electric motor.

In addition, the invention relates to a kitchen appliance with a base device which comprises a preparation vessel into which a rotation element protrudes, which can be rotated by means of an electric motor arranged in the base device.

State of the art

From the DE 102 104 42 A1 an electrically operated kitchen machine is known as a combined cook-mix device. The food processor comprises a basic device and a mixing bowl for holding and thermo-mechanical treatment of food. The base unit contains a motor that drives a shaft that protrudes into the mixing bowl at the bottom and that carries a rotating set of knives for chopping, kneading or mixing food. The mixing bowl can be closed with a lid.

There are also known supplementary sets for such kitchen machines to create further functionalities. For example, in the DE 10 2017 123 689 A1 a supplementary set in the form of a container-shaped conical grinder is proposed. For this purpose, a grinding element is connected to the knife set of the basic device, which protrudes from bottom to top into a grinding vessel, which is non-rotatably mounted inside the preparation vessel. The connection between the knife set and the grinding element is made via a coupling element that is equipped with fork-shaped drivers that grip between the knives of the knife set. When the knife set rotates, the coupling element and the grinding element connected to it rotate. So that the grinding vessel does not rotate with it, it is connected to the inner wall of the preparation vessel or to the lid of the preparation vessel.

the DE 20 2020 106 270 U1 describes such a food processor, which has been expanded to include the functionality of a juicer. A rotating rod is attached to the set of knives that protrudes into the mixing bowl, the second rod end of which can be inserted through a bottom opening of a container-shaped lid sieve that rests firmly on the edge of the mixing bowl. A conventional squeezing cone with a dome-shaped, structured top can be plugged onto the second end of the rod in a rotationally fixed manner. A halved orange, lemon and the like can be pressed and squeezed out by hand on the rotating squeezing cone, which has no contact with the lid sieve. The squeezing cone can be rotated clockwise and counterclockwise. Fruit juice or pieces of fruit enter the mixing bowl through the lid sieve.

Technical task

The known extension sets or extended kitchen machines use the rotational axis drive of the basic device to implement an additional function that goes beyond the standard chopping and mixing function of the knife set.

The invention is based on the object of providing a kitchen appliance with extended functionality. In addition, the invention is based on the object of providing a suitable and easy-to-use insert as an extension set for a known kitchen appliance.

General description of the invention

With regard to the insert, this object is achieved according to the invention based on an insert of the type mentioned at the outset in that the insert comprises a container which can be connected to the rotary element via a coupling element and can be rotated within the preparation vessel.

The rotating element is for example a rotating drive shaft or a knife mounted on a drive shaft or a knife set mounted on a drive shaft. It can be rotated by means of the electric motor of the food processor. The coupling element is connected to the rotation element directly or indirectly - via an intermediate element. It rotates with the rotation element about an axis of rotation which runs coaxially to a central axis of the preparation vessel. The preparation vessel center axis and the axis of rotation are preferably oriented vertically.

The coupling element is non-rotatably connected to the container. This connection is detachable or non-detachable. When the coupling element rotates, the insert container also rotates about the axis of rotation. The direction of rotation (clockwise or counterclockwise) is fixed or it can be changed. The rotation speed is also fixed or it can be changed.

The insert container is thus designed to be rotated about the axis of rotation within the preparation vessel of the kitchen appliance. The rotatably mounted container can fulfill several functions. For example, a Food received within the container is washed, spun, mixed, heated, fermented or changed or processed in any other way.

In a preferred embodiment, the container has a base and a side wall connected to the base, the base being connected to the coupling element.

The coupling element is designed for a releasable connection with the rotation element. In the simplest case, the connection is designed as a plug connection between a bore on the part of the coupling element and a shaft on the part of the rotary element. In terms of smooth running during rotation, it has proven useful if the detachable plug connection is designed as a clearance fit with little play, in particular with clearance fits whose tolerance limit classes for bore and shaft in DIN 7157 are H8 / h9, H7 / g6, or H7 / f7.

The rotation of the container around its central axis is stabilized by a center of gravity that is as low as possible. With regard to this, it has proven to be advantageous if the weight of the base and the coupling element together make up at least 30%, preferably at least 40% and particularly preferably at least 45% of the total weight of the container.

The underside of the coupling element facing the rotation element is advantageously designed in such a way that a circumferential ring or at least two, preferably at least three support points protrude from it and end at the same height level. The circumferential ring or the support points are suitable for placing the container together with the floor on a base. The support points can be designed point-like or flat.

In the simplest case, the bottom of the container is flat. However, a container with a rounded bottom is also suitable, which is designed in the shape of a half-shell with a round or oval cross-section.

The container has a filling opening for filling with a food. The upper end of the circumferential side wall can be shaped in various ways; for example with a flat or curved end face, with an inwardly and / or outwardly pointing flange.

In the case of a container in which the upper end of the circumferential side wall merges into an inwardly pointing flange, the diameter of the filling opening is determined by the diameter of the flange. This embodiment has the advantage that the inwardly facing flange counteracts food components from being thrown out of the container. This effect is reinforced if the flange is directed downwards at an angle. For this effect it is sufficient if the flange has a small width of about 0.5 cm or more, but less than 3 cm. If the coupling element is releasably connected to the floor, this can facilitate cleaning of the insert. With regard to easy handling, it is particularly advantageous if the base, the side wall and the coupling element are made from one piece.

In a further advantageous embodiment, the side wall and / or the base have perforations.

The perforations are, for example, holes with any cross-section or slots. In this embodiment of the insert container, which is also referred to below as a “perforated container”, the same medium, for example air or a liquid, is located inside and outside the container when used as intended. By rotating the perforated container, food can be moved quickly or slowly through the medium. In particular, vegetables or lettuce can be washed in water by slow rotation and then spun in the air by rapid rotation and dried in the process.

In order to provide the largest possible volume for filling with food, the container is advantageously designed in such a way that it fills the space available in the preparation vessel as completely as possible. In view of this, in a particularly advantageous embodiment, the side wall is rotationally symmetrical and it has a bulbous shape.

The rotational symmetry avoids unbalance during rotation and the bulbous shape contributes to a large filling volume.

The insert according to the invention can comprise at least one further part in addition to the container. In an advantageous development, it comprises a guide ring as a further part, which can be rotatably mounted in an upper area of the preparation vessel, the container side wall having an upper end which is designed so that it comes to rest directly or indirectly in or on the guide ring .

The upper end of the container - whatever it is shaped - can have sliding contact on the inner wall of the preparation vessel during the rotation, which stabilizes the rotation. The quality of the inner wall can suffer over time, particularly with fast rotation speeds or due to imbalances. The guide ring avoids this. The guide ring is suitable for further stabilizing the rotation. It is designed to be fixed in a rotationally fixed manner on the inner wall of the preparation vessel or on any lid of the preparation vessel. When the container rotates, its upper end comes to rest in or on the guide ring directly or indirectly - via an intermediate element or several intermediate elements. In the case of direct contact, the surfaces lying one on top of the other form a plain bearing. This is the simplest design in terms of construction.

The intermediate elements are, for example, rolling or rotating bodies, such as balls, wheels, cylinders or needles. These can, for example, be attached to the guide ring pointing inwards or upwards, so that the container can rest on it or roll off against it.

The guide ring is preferably made of a mechanically particularly stable material or a material that improves the sliding properties, in particular a plastic made of polytetrafluoroethylene (PTFE) or metal, such as stainless steel. In particular, the surfaces that come into contact with the container during the rotation can also have a coating made of polytetrafluoroethylene to reduce the sliding resistance.

The guide ring can, for example, be provided with an annular groove that is open at the bottom and into which the upper, free end face of the container slidably protrudes. In the simplest case, however, the front side of the container rests against an underside of the guide ring, so that a flat sliding surface is formed. The flat sliding surface reduces the penetration of particles between the surfaces sliding on one another. By introducing knobs, ribs or waves into the otherwise flat sliding surface, the contact surface and thus the sliding resistance can be reduced.

The guide ring preferably has a multi-leg cross-sectional profile in which a first profile leg is designed to rest against the inner wall of the preparation vessel and another, second profile leg is designed to rest against the upper circumferential face of the container.

The second profile leg of the guide ring points radially inward and can completely or partially cover the opening of the container. Stirring or mixing elements which protrude downward into the container can be attached to this complete or partial cover. These are, for example, rods, threads, lamellas and the like. When the container is rotated about the axis of rotation, the stirring or mixing elements are stationary and keep the food that is present in the container and that is sliding past as a result of the rotation in motion. This is helpful, for example, when washing lettuce or vegetables.

When the guide ring is used as intended, the upper, free face of the container rests against or in the guide ring. In order to prevent the guide ring from rotating at the same time as the container rotates about the axis of rotation, it can be fixed on the inner wall of the preparation vessel or on any rotatable lid of the preparation vessel. The fixation can be achieved, for example, on frictional engagement by using adhesive or non-slip material. In a particularly preferred type of fixation, the profile leg is provided with latching means for resting against the inner wall of the preparation vessel, which are designed to form a form-fit connection with counter-latching means on the inside of the preparation vessel.

Latching means and counter-locking means work together according to the key-lock principle to prevent the guide ring from rotating. A suitable embodiment of the locking means or the locking means on the guide ring are bulges, in particular longitudinal ribs, which run perpendicular to the guide ring circumferential line.

The bulges or longitudinal ribs correspond to corresponding counter-locking means on the inner wall of the preparation vessel, that is to say, for example, with depressions or longitudinal grooves.

In a preferred embodiment of the extension insert with guide ring, the upper end of the container side wall has an upward and inwardly directed bevel, which corresponds to a bevel of the guide ring.

The top of the upward and inward bevel of the container side wall corresponds to the underside of a bevel of the guide ring and can form a sliding surface with this. The bevel forms, for example, an angle in the range from 30 to 60 degrees with the vertical, preferably an angle in the range from 40 to 50 degrees.

To reduce the contact surface and the sliding resistance, the bevel of the guide ring and / or the bevel of the container side wall can be provided with structural elements protruding from the sliding surface, such as waves or knobs. The knobs or others protruding structural elements are preferably made of a material with low sliding resistance, such as a plastic made of polytetrafluoroethylene. A small number of such structural elements, for example 3 to 10, is sufficient.

As an alternative to this, roller bearing elements can also be mounted in particular on the bevel of the guide ring which, during rotation, rest against the upward and inward bevel of the container side wall. The roller bearing elements are equipped with rolling or rotating bodies, for example small wheels (in particular made of an elastic material such as rubber), rollers or cylinders. The roller bearing elements can be spring-loaded in order to be able to better absorb any imbalances. A small number of such roller bearing elements, for example 3 to 10, is sufficient.

The upward and inward beveling of the container side wall has the additional function of further reducing the discharge of food items from the container. A further modification of the upper end of the container side wall contributes to this, in which the bevel at the upper end of the container side wall merges into an upwardly pointing end edge, the end edge pointing vertically upwards or an angle not equal to 180 degrees with the bevel includes, and wherein the terminating edge protrudes from a central opening of the guide ring or is flush with this.

In a further preferred embodiment, the insert according to the invention comprises a further part, namely an inner container which can be inserted into the container and which is connected to the container in a rotationally fixed manner. The inner container is preferably designed with an outwardly curved, for example hemispherical, half-shell-shaped or dome-shaped base, over which vortex-forming elements are arranged.

The inner container has a perforated, but preferably a closed, side wall. Its purpose is to provide a space within the container that is largely unaffected and closed by the media and flows in the container. In a preferred embodiment, the inner container is used for poaching eggs. For this purpose, it has a half-shell, hemispherical or dome-shaped base for holding a poached egg and vortex-forming elements, such as lamellar mixing elements that protrude into the inner container and that create a vortex in which the egg is trapped during poaching.

In an alternative preferred embodiment, the container has an outwardly curved, preferably hemispherical, half-shell-shaped or dome-shaped base, over which vortex-forming elements are arranged.

In contrast to the previously described embodiment, in which the container is designed for receiving an inner container with an outwardly facing base, the container itself is provided with such a base in this embodiment. The container preferably has a non-perforated, closed side wall. The coupling element is connected directly to the underside of the container. With this variant it is also possible to cook poached eggs.

In another embodiment, a connecting rod is provided as an additional component of the extension insert, which is designed to extend between the rotation element and the guide ring. The connection with the rotary element is preferably non-rotatable and the connection with the guide ring is rotatable. For this purpose, the guide ring is equipped, for example, with inwardly projecting holding arms which can be arranged in a star shape and which carry a hollow shaft through which the connecting rod extends rotatably. Or the guide ring completely covers the filling opening of the container, apart from a central passage opening through which the connecting rod extends rotatably.

With regard to the kitchen machine, the above-mentioned technical problem is achieved based on a kitchen machine of the type mentioned according to the invention in that it has an expansion insert according to the invention for the treatment of food, which comprises a container which is connected to the rotary element via a coupling element and is located within the Preparation vessel is rotatable.

The rotating element is for example a rotating drive shaft or a knife mounted on a drive shaft or a knife set mounted on a drive shaft. It can be rotated by means of the electric motor. The coupling element of the extension insert is connected to the rotation element directly or indirectly - via an intermediate element. It rotates with the rotation element about an axis of rotation which runs coaxially to a central axis of the preparation vessel. The preparation vessel center axis and the axis of rotation are preferably oriented vertically.

The coupling element is non-rotatably connected to the container. This connection is detachable or non-detachable. When the coupling element rotates, the insert container also rotates about the axis of rotation. The direction of rotation (clockwise or counterclockwise) is fixed or it can be changed. The rotation speed is also fixed or it can be changed.

The insert container can thus be rotated around the axis of rotation within the preparation vessel of the kitchen appliance. It can fulfill several functions. For example, a food received within the container can be washed, spun, mixed, heated, fermented or changed or processed in another way. This is particularly important for food that should be moved during treatment, but should not be subjected to high shear stresses or high temperatures. These conditions can be fulfilled by the separate receptacle in the insert container of the invention, where the food is removed from the direct influence of a stirring or cutting tool and where it can be heated indirectly, for example by means of a water bath provided in a preparation vessel.

In a preferred embodiment, the rotary element comprises a set of knives with a plurality of knives, the coupling element having driver elements which engage between the knives.

The knife set includes at least two knives, often three or four knives. These protrude perpendicularly from the axis of rotation, so that the knife flanks include angular ranges of 180 or less between them. The driver elements of the coupling element protrude into these angular ranges. Each driver element lies against at least one of the knife flanks, but each driver element preferably lies against the two knife flanks, which define a common angular range. This prevents the knife from striking the driver in a pulse-like manner when the direction of rotation is reversed.

In a particularly preferred modification, the driver elements have an undercut area against which the knife flanks rest during rotation and which prevent the coupling element and thus the container from giving way in the vertical direction.

The undercut area is designed, for example, as a simple notch in the driver base body, into which a knife flank fits. The measuring flank lying in the undercut area during the rotation prevents intentional and unintentional upward movement of the driver. As a result, the container cannot be removed upwards from the preparation vessel as long as it is being rotated by means of the set of knives. Only at a standstill can the driver element, after being slightly rotated against the previous direction of rotation, be disengaged from the knife set and then removed upwards.

In a particularly preferred embodiment of the food processor according to the invention, the extension insert comprises a guide ring that is mounted in the preparation vessel in a rotationally fixed manner, which is designed with latching means in the form of longitudinal ribs, the preparation vessel having an inner wall in which several longitudinal grooves run from top to bottom the longitudinal ribs form a positive connection.

When the guide ring is used as intended, the upper, free face of the container rests against or in the guide ring. In order to prevent the guide ring from rotating at the same time as the container rotates about the axis of rotation, it is fixed to the inner wall of the preparation vessel. For this purpose, the guide ring has a circumferential leg section resting on the inner wall of the preparation vessel, on which several longitudinal ribs are formed which run perpendicular to the horizontal circumferential line, that is from top to bottom. These form a form-fitting connection with longitudinal grooves which run from top to bottom on the inner wall of the preparation vessel.

These locking means and counter-locking means work together according to the key and lock principle in order to prevent the guide ring from rotating.

A particularly suitable embodiment of the food processor has a cover that rests on the guide ring.

The lid closes the container and the preparation vessel at the top. When correctly positioned, the cover advantageously actuates an electrical contact which only enables the rotary element of the kitchen appliance to be started.

Figure list

• 1 eine Ausführungsform des behälterförmigen Erweiterungs-Einsatzes in einer dreidimensionalen Ansicht auf die Behälter-Seitenwand,
• 2 eine dreidimensionale Ansicht in den Behälter-Innenraum,
• 3 eine Ansicht auf den Behälter-Boden,
• 4 eine dreidimensionale Ansicht auf den Behälter in Verbindung mit einem Messersatz,
• 5 eine dreidimensionale Ansicht auf den Behälter-Boden in Verbindung mit dem Messersatz,
• 6 einen kappenförmigen Führungsring für den Behälter in einer Draufsicht,
• 7 den Behälter und den kappenförmigen Führungsring in einer Explosionsdarstellung,
• 8 den Behälter und den kappenförmigen Führungsring in einer dreidimensionalen Seitenansicht,
• 9 einen Mixtopf und den Deckel einer Küchenmaschine, den Behälter und den kappenförmigen Führungsring in einer Explosionsdarstellung,
• 10 den Behälter mit aufgesetztem Führungsring in einem per Deckel geschlossenen Mixtopf einer Küchenmaschine in einer Seitenansicht,
• 11 eine Ausführungsform einer erfindungsgemäßen Küchenmaschine in einer dreidimensionalen Ansicht auf die Vorderseite mit dem Mixtopf und dem Bedienungstableau,
• 12 eine Ausführungsform eines Pochiereinsatzes in einer dreidimensionalen Ansicht,
• 13 den Pochiereinsatzes innerhalb des Behälters in einer Seitenansicht,
• 14 eine weitere Ausführungsform des behälterförmigen Erweiterungs-Einsatzes mit einem Führungsring in Explosionsdarstellung bei Ansicht auf die Behälter-Seitenwand,
• 15 die Ausführungsform des behälterförmigen Erweiterungs-Einsatzes von 14 in einer dreidimensionalen Ansicht auf die Behälter-Unterseite mit der Kupplungseinheit,
• 16 eine weitere Ausführungsform eines Führungsrings in einer Draufsicht auf die Unterseite.
• 17 eine weitere Ausführungsform des behälterförmigen Erweiterungs-Einsatzes in einer dreidimensionalen Ansicht auf die Behälter-Unterseite, und
• 18 den Behälter von 17 in einer Seitenansicht.

The invention is explained in more detail below using an exemplary embodiment and a patent drawing. In detail shows in a schematic representation

• 1 an embodiment of the container-shaped extension insert in a three-dimensional view of the container side wall,
• 2 a three-dimensional view of the interior of the container,
• 3 a view of the bottom of the container,
• 4th a three-dimensional view of the container in connection with a set of knives,
• 5 a three-dimensional view of the container bottom in connection with the knife set,
• 6th a cap-shaped guide ring for the container in a plan view,
• 7th the container and the cap-shaped guide ring in an exploded view,
• 8th the container and the cap-shaped guide ring in a three-dimensional side view,
• 9 a mixing bowl and the lid of a food processor, the container and the cap-shaped guide ring in an exploded view,
• 10 a side view of the container with attached guide ring in a mixing bowl of a food processor that is closed with a lid,
• 11 an embodiment of a food processor according to the invention in a three-dimensional view of the front with the mixing bowl and the control panel,
• 12th an embodiment of a poaching insert in a three-dimensional view,
• 13th the poaching insert inside the container in a side view,
• 14th Another embodiment of the container-shaped extension insert with a guide ring in an exploded view when looking at the container side wall,
• 15th the embodiment of the container-shaped expansion insert of 14th in a three-dimensional view of the underside of the container with the coupling unit,
• 16 a further embodiment of a guide ring in a plan view of the underside.
• 17th a further embodiment of the container-shaped expansion insert in a three-dimensional view of the container underside, and
• 18th the container of 17th in a side view.

The expansion insert for a multifunctional kitchen appliance, explained in more detail below, comprises, in the simplest case, a container which is rotatably mounted within the mixing bowl of the kitchen appliance.

1 shows an embodiment of the container 1 in a three-dimensional view. The container 1 is essentially a hollow cylinder with a slightly bulbous shape around the central axis 9 circumferential side wall 2 educated. The side wall 2 goes into an integrally connected floor 3 above. Height and diameter of the container 1 are adapted to the inner volume of the mixing bowl and fill it as much as possible.

From the ground 3 there is a coupling unit 4th downwards. The coupling unit 4th includes four drivers 5 and a centrally arranged connection piece 6th . These elements 5 ; 6th are designed for a detachable connection with a rotatable set of knives of the food processor, as shown below with reference to 4th and 5 will be explained in more detail.

The side wall 2 is perforated and has slits that run diagonally from top to bottom 8th Mistake. So is the floor 3 is perforated and with slits arranged in a partial circle 8th Mistake. The container 1 including the floor 3 and the coupling unit 4th is an integrally molded injection-molded part and consists of a temperature-stable and food-safe plastic, for example from talc-reinforced polypropylene of the type PP-T20. The weight of the floor 3 and the coupling unit 4th makes up a little more than 45% of the total weight of the entire component.

The upper front end of the container 1 is as a flat, circumferential edge 7th formed, as can be seen from the three-dimensional plan view of the top of the container in FIG 2 is easier to see.

The view of the container bottom 3 in 3 shows in particular the coupling unit 4th with the four take away 5 and the connecting piece 6th as well as those in partial circles around the coupling unit 4th distributed slit-shaped perforations 8th .

The three-dimensional view of the container 1 in 4th shows the interaction of the coupling unit 4th and a set of knives 22nd the multifunctional food processor. The knife set 22nd protrudes into the (in the 4th not shown) mixing bowl of the food processor. The knife insert 22nd has four knives pointing radially outwards 24 fitted at a 90 ° angle evenly around a drive shaft adapter 26th are distributed. The knife 24 can be rotated bidirectionally around the axis of rotation (= central axis 9). the drive shaft adapter 26th protrudes beyond the plane of rotation of the knife on both sides and the connecting piece 6th is on the part of the drive shaft adapter that protrudes upwards 26th put on.

From the top view of the underside according to 5 it can be seen that the four drivers 5 the coupling unit 4th into the spaces between the flanks of adjacent knives 24 protrude while leaving a small gap on both sides 28 on the part of the flanks of the knives that is not sharpened 24 issue.

In the following, an embodiment of the expansion insert according to the invention is explained, which is equipped with an optional additional element. The optional additional element is a cap-shaped guide ring 10 who is in 6th is shown on the basis of a top view. The guide ring 10 serves to stabilize the rotation and to improve the smoothness of the container 1 inside the mixing bowl. This can be particularly helpful if that is in the container 1 Food contained and to be treated tends to be unbalanced when the container rotates 1 to create.

The guide ring 10 also consists of a food-safe and temperature-stable plastic such as PE 100-RC. Its cross-sectional profile essentially forms a rectangular angle, one of which is horizontally extending profile leg 11 loosely on the flat face of the container 7th rests and defines a sliding surface together with this, and the other, vertically extending profile leg 12th for installation on the (slightly bulbous outwardly curved container side wall 2 ) is designed.

To ensure its guiding function, it is sufficient if the horizontally extending profile leg is located 11 extends radially inward over a short distance of, for example, 3 mm to 10 mm. At the in 6th The embodiment shown is the radial extension of the horizontally extending profile leg 11 but so large that it covers the opening of the container 1 - apart from a small central opening 13th - completely covers. This cover prevents food parts from being thrown out of the rotating container 1

The vertical profile leg 12th has three longitudinal grooves evenly distributed around the circumference 14th provided with a rounded groove base that runs continuously from top to bottom. The longitudinal grooves 14th are designed so that they correspond to the longitudinal ribs on the inside of the mixing bowl. They correspond and form a form-fitting, non-rotating connection between the guide ring and the mixing bowl according to the key-lock principle.

In the three-dimensional exploded view of 7th is the guide ring 10 above the container 1 arranged. After joining, the top protrudes 7th of the container 1 into the cap-shaped cover up to the plant on the underside of the horizontally selling profile leg 11 and with this forms a flat circumferential sliding surface through which the guide ring 10 and the container 1 are easily rotatable against each other.

From the top view of the guide ring 10 from 8th are the longitudinal grooves 14th and the cap-shaped cover through the horizontally extending profile leg 11 with the central opening 13th clearly visible.

The exploded view of 9 shows a mixing bowl 20th with end cover 30th for use in a multifunctional kitchen appliance in connection with the extension insert according to the present invention, namely in the embodiment with a container 1 and guide ring 10 .

At the bottom of the mixing bowl 20th is the rotatable knife set connected to the (not shown) drive shaft of the electric motor of the food processor 22nd to recognize. On the knife set 22nd becomes the coupling unit 4th of the container 1 attached. On the upper free face 7th of the container 1 becomes the guide ring 10 laid so that the three longitudinal grooves distributed around the circumference 14th of the guide ring 10 snap into place on three longitudinal ribs on the inside of the mixing bowl 20th protrude and in 9 as a dent 14a are recognizable. This is where the flat upper face comes in 7th of the container 1 for contact with the horizontally running profile leg 11 of the guide ring 10 with the formation of a flat sliding surface.

The launch cover 30th is part of the food processor. The end cover 30th has a central opening (not visible here) through which, for example, the mixing bowl can be filled 20th or the container 1 is possible.

The side view of 10 shows a mixing bowl 20th with container inserted in it 1 and guide ring 10 , the knife set 22nd and the coupling unit 5 and attached cover plate 30th . After it is correctly put on, the end cover loosens 30th an electrical contact that enables the food processor to be switched on. Correct placement of the launch cover 30th is only possible if the container too 1 and the guide ring 10 correctly in the mixing bowl 20th are placed.

11 shows schematically a food processor 100 equipped with an extension insert according to the invention. The food processor 100 as known from the prior art, has a base unit 101 on that one recording 104 for the mixing bowl 20th provides, and a conventional control panel including a display 102 for monitoring and setting of Recipes or parameters of a thermo-mechanical treatment of food in the mixing bowl 20th enables. One of the three on the inside of the mixing bowl 20th Longitudinal ribs running from top to bottom are indentations on the outside of the mixing bowl 14a recognizable. The reference number 103 symbolizes the power button. In contrast to the 6th until 10 shown embodiment of the guide ring with cap-like cover ( 11 ) the container opening protrudes in the embodiment shown here, the horizontally extending leg 111 of the cross-sectional profile only a few millimeters into the interior of the container 1 into it, so that it only covers the upper front side.

A method for washing and drying lettuce or vegetables using the food processor according to the invention is explained by way of example below.

The mixing bowl 20th is filled to about halfway with water. In the container 1 is filled with lettuce or vegetables and the container 1 is in the mixing bowl 20th inserted so that the coupling unit 4th on the knife set 22nd clicks into place. Then the guide ring 10 placed so that the form-fit snap-in connection ( 14th ; 14a ) to the inner wall of the mixing bowl. The end cover (in 11 omitted for reasons of illustration) is added. The speed of rotation of the knife set 22nd is set to a low value. The food processor 100 is turned on so that the container 1 slowly around its central axis in the water bath 9 rotates so as not to damage the salad / vegetables. The washing water passes through the slots 8th into the container 1 and cleans the salad / vegetables. After a few minutes the rotation will stop and the food processor will stop 100 switched off. The container 1 is removed and placed on a draining mat. The coupling unit 4th serves as a stand and over the slots 8th the wash water runs off. That in the mixing bowl 20th remaining wash water is poured off. The mixing bowl 20th including the container 1 will be re-included in the recording 104 the food processor 100 used. The speed of rotation of the knife set 22nd is set to a higher value so that after switching on the food processor 100 the container 1 rotates quickly in air and thus the previously washed salad / vegetables are spun and dried.

A further embodiment of the expansion insert according to the invention, which is equipped with an optional additional element, is explained below. The optional additional element is a poaching insert 40 for poaching eggs, as shown schematically in 12th is shown using a three-dimensional view. The use of poaching 40 is in the container 1 used. It has an upper rim all around 41 down into a dome-shaped floor 42 transforms. In the area of the upper circumferential edge 41 is a variety of slats 43 arranged, which protrude inward and which only leave a central area with a diameter of about 4 to 8 cm.

13th shows a side view of the poaching insert 40 supplemented expansion insert. The use of poaching 40 is in the container 1 used. The upper circumferential edge 41 has an outside diameter that is an interference fit to the inside diameter of the container 1 is adapted, so that when inserting a frictional connection between the poaching insert 40 and container 1 results and the poaching use 40 together with the container 1 rotates. Those in a heated water bath around the central axis 9 rotating blades 43 create a vortex in which an egg to be poached can be enclosed. the poached egg goes into the receptacle of the dome-shaped bottom 42 and can be found there.

14th and 15th show a further embodiment of the container 141 . 14th in a view of the side wall 142 , and 15th in a view of the coupling unit 144 .

The container 141 is essentially a hollow cylinder with a slightly bulbous shape around the central axis 9 circumferential side wall 142 educated. The side wall 142 goes into a floor in its lower area 143 over from which a coupling unit 144 protrudes downwards. The side wall 142 , the floor 143 and the coupling unit 144 form an integral component produced in the injection molding process from a temperature-stable and food-safe plastic, for example from talc-reinforced polypropylene with the type designation PP-T20.

The coupling unit 144 includes four drivers 145 and a centrally arranged connection piece 146 . These elements 145 ; 146 are designed for detachable connection with a rotatable set of knives of the kitchen appliance, as described above for the embodiment of 1 until 10 has already been explained. The weight of the floor 143 and the coupling unit 144 makes up about 40% of the total weight of the entire component.

The upper front end of the container 141 has an upward and inward direction and at an angle of 45 degrees to the central axis 9 inclined bevel 142a on. The bevel 142a goes into a vertically upward facing edge 142b with a height of 5mm above that with the bevel 142a thus includes an angle of 135 degrees.

The guide ring 150 essentially comprises a two-legged circumferential cross-sectional profile, the first profile leg 151 is designed to rest on the inner wall of the preparation vessel, and the second profile leg 152 to the system at the upper end ( 142a ) of the container 141 . The second profile leg 152 of the guide ring 150 closes with the central axis 9 an angle of 45 degrees. Its bevel corresponds to the bevel of the circumferential upper end 142a of the container 141 . In a preferred embodiment, the two are bevels 142a , 152 when used as intended in contact with each other and form a common sliding surface. At the in 14th embodiment shown are on the bevel 152 of the guide ring 150 three rolling bearings evenly distributed around the circumference 153 assembled. On these is the bevel 142a of the container 140 when rotatably stored as intended. The upward-facing end edge protrudes 142b through a central opening 154 of the guide ring 150 and is flush with its top.

The first profile leg designed to rest on the inner wall of the preparation vessel 151 has three elongated indentations evenly distributed around the circumference 155 provided, engage in the corresponding, elongated protuberances on the inner wall of the preparation vessel according to the key-lock principle, as the above with reference to the first embodiment of the container according to the invention 1 is explained in more detail. When the container is rotating 140 around the axis of rotation ( 9 ) This causes the guide ring to rotate 150 prevented.

The driver elements 145 the coupling unit 144 each have an undercut area 147 on. When rotating the knife set, the knife flanks lie within the undercut area 147 and thereby fix the coupling unit 144 in the sense that it cannot move upwards. The ones in the undercut areas 147 adjacent exhibition flanks thus prevent intentional and unintentional movement of the container 140 up.

In the 16 Shown embodiment of a guide ring 160 corresponds essentially to the one as it is based on him 14th and 15th has been explained. Here, too, the same reference numbers stand for identical or equivalent components or components. In contrast, there are on the bevel 152 (the one with the bevel of the circumferential upper end 142a of the container 141 corresponds) three hemispherical knobs evenly distributed around the circumference 163 made of polytetrafluoroethylene (PTFE) or stainless steel with a diameter of 5mm. The knobs are preferably spring-loaded in order to be able to better absorb any imbalances. On these knobs 163 is the bevel 142a of the container 140 when properly stored slidably.

the 17th and 18th show a further embodiment of the container 171 . The container has 171 an outwardly curved, dome-shaped, in particular half-shell-shaped or semicircular bottom 172 on, above the vortex-forming elements in the form of inwardly protruding lamellae 43 are arranged. The coupling unit with the coupling elements 5 is right with the bottom of the container 171 tied together. With this variant it is also possible to cook poached eggs.

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• DE 10210442 A1 [0003]
• DE 102017123689 A1 [0004]
• DE 202020106270 U1 [0005]

Claims (17)

Extension insert for receiving in a preparation vessel of a kitchen appliance, into which a rotary element protrudes which can be rotated around an axis of rotation by means of an electric motor, characterized in that the insert comprises a container which can be connected to the rotary element via a coupling element and which can be rotated within the preparation vessel is. Use after Claim 1 , characterized in that the container has a base and a side wall connected to the base, the base being connected to the coupling element. Use after Claim 1 or 2 , characterized in that the bottom, the side wall and the coupling element are made in one piece. Use after Claim 2 or 3 , characterized in that the side wall and / or the bottom have perforations. Use after one of the Claims 2 until 4th , characterized in that the side wall is rotationally symmetrical and has a bulbous shape. Insert according to one or more of the preceding claims, characterized in that the insert comprises a guide ring which can be rotatably mounted in an upper region of the preparation vessel and that the container side wall has an upper end which is designed so that it is in or on Guide ring comes to rest directly or indirectly. Use after Claim 6 , characterized in that the guide ring has a multi-leg cross-sectional profile in which a first profile leg is designed to rest on the inner wall of the preparation vessel and another, second profile leg is designed to rest on the upper circumferential face of the container. Use after Claim 7 , characterized in that the profile leg is provided with latching means for resting on the inner wall of the preparation vessel, which are designed to form a form-fit connection with counter-latching means on the inside of the preparation vessel. Use after Claim 8 , characterized in that the locking means are designed as bulges, in particular as longitudinal ribs, which run perpendicular to the guide ring circumferential line. Use after one of the Claims 6 until 9 , characterized in that the upper end of the container side wall has an upwardly and inwardly directed bevel, which corresponds to a bevel of the guide ring. Use after Claim 10 , characterized in that the bevel at the upper end of the container side wall merges into an upwardly facing terminating edge, the terminating edge being directed vertically upwards or enclosing an angle not equal to 180 degrees with the bevel, and wherein the terminating edge consists of a central opening of the Guide ring protrudes or is flush with this. Insert according to one or more of the preceding claims, characterized in that the insert comprises an inner container which can be inserted into the container and is non-rotatably connected to the container, the inner container preferably being formed with an outwardly curved, preferably half-shell, hemispherical or dome-shaped base , above which vortex-forming elements are arranged. Use after one or more of the Claims 1 until 11 , characterized in that the container has an outwardly curved, preferably half-shell-shaped, hemispherical or dome-shaped base, over which vortex-forming elements are arranged. Kitchen machine with a base unit having an electric motor and a preparation vessel which can be connected to the base unit and into which a rotary element protrudes which can be rotated by means of the electric motor, characterized in that it has an insert for treating food according to one of the Claims 1 until 13th which comprises a container which is connected to the rotation element via a coupling element and which can be rotated within the preparation vessel. Food processor after Claim 14 , characterized in that the rotary element comprises a knife set with a plurality of knives, and that the coupling element has driver elements which engage between the knives. Food processor after Claim 14 or 15th characterized in that the insert comprises a guide ring which is rotatably mounted in the preparation vessel and is designed with latching means in the form of longitudinal ribs, and in that the preparation vessel has an inner wall in which several longitudinal grooves run from top to bottom, which form a positive connection with the longitudinal ribs form. Food processor according to one of the Claims 14 until 16 , characterized in that it comprises a cover which rests on the guide ring.

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