Foods and beverages: apparatus – Cooking – With stirring
Patent
1997-01-21
1998-05-12
Simone, Timothy F.
Foods and beverages: apparatus
Cooking
With stirring
99409, 99511, 366146, 366314, A47J 4304, A47J 4307
Patent
active
057492859
DESCRIPTION:
BRIEF SUMMARY
FIELD AND BACKGROUND OF THE INVENTION
The invention relates to a food processor comprising a mixing vessel and a drive for an agitator in the mixing vessel, the lower region of the mixing vessel having a substantially circular opening cross-section.
Such a food processor is known, for example, from German Patent 35 07 276. This food processor is also referred to as a thermomixer. The lower region of the mixing vessel can be heated up by means of a heating device which is incorporated in a mixing-vessel mount provided in the food processor and into which the mixing vessel can be inserted. In addition to the possibility of preparing food by mixing and/or chopping up, it is thus also possible to cook the food.
In the case of a food processor as has been assumed as known in the introduction, in addition to the requirement of the mixing vessel being able to receive a comparatively large volume, it is also the intention to design the mixing vessel as far as possible such that the stirred or mixed and/or chopped-up foodstuffs are mixed thoroughly in the mixing vessel. In this context, it is already known that the mixing vessel widens upwardly. In addition, a number of swirl-action ribs have already been provided on the periphery in such vessels.
SUMMARY OF THE INVENTION
It is an object of which the invention is based is to provide a food processor as has been described in the introduction so that it is easier to use.
This technical problem is solved first by it being provided that, in an upper region, the opening cross-section is elliptical, and that a centre point of the upper opening cross-section is offset with respect to a centre point of the lower opening cross-section. Thorough mixing of the foodstuffs is achieved by this change in shape of the interior of the mixing vessel over the vertical extent of the mixing vessel. Zones of more pronounced movement of the foodstuff and zones of lesser movement of the foodstuff are defined. Such a mixing vessel usually has a handle on one side. It is, then, preferred that the centre point of the upper opening cross-section is at a greater distance from the handle than the centre point of the lower opening cross-section. This means that the opening region of the mixing vessel has a certain extent of projection in a direction which is defined by an axis through the centre point of the opening cross-sections and the handle, this extent of projection extending away from the handle. Furthermore, it is also preferred that it is possible to distinguish, over a vertical extent of the mixing vessel, three different regions on the latter. First of all a lower, substantially cylindrical region, which is adjoined by a central region with substantially conical side surfaces, and an upper region whose opening cross-section is elliptical. The cylindrical region may, however, also be formed in a slightly conical manner, for example at an angle of approximately 1.6.degree.. In this case, the transition from the circular opening cross-section to the elliptical opening cross-section can start actually in the central region. Specifically, the geometry of the mixing vessel here may also be arranged such that a wall of the mixing vessel extends curved in a vertical section in the offset direction of the centre point of the cross-section, but the opposite side--the handle side--is straight, although it does widen upwardly. The described geometry of the inner surface of the mixing vessel is indeed advantageous as regards the intended thorough mixing of the foodstuffs.
However, for the purposes of further improvement, it is provided that an inner wall surface of the mixing vessel in a horizontal cross-section provides an inwardly protruding step. In particular on the other side of this step may merge into the wall of the mixing vessel, running out smoothly into the wall. It is also possible, specifically, for a transition corresponding to a chamfer to be provided on the steep side of the step. This step is preferably provided in the central and upper regions of the mixing vessel. Overall, t
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Dorner Stefan
Kemker Uwe
Lapp Oliver
Simm Hans-Peter
Farber Martin A.
Simone Timothy F.
Vorwerk & Co. Interholding GmbH
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