HU215286B - Mixing apparatus for cooking vessel - Google Patents

Abstract

A mixing apparatus for mixing and stirring of liquid or paste-like masses in a cylindric cooking vessel (12), for example for preparation of food in large kitchens. The apparatus comprises at least one vertical drive-shaft (18, 19) which is connected to drive means. The drive-shaft is located primarily coaxial with or in line with the longitudinal axis of the vessel and it is provided with attachments (15, 16) for at least three agitator wings (17). The agitator wings (17) are radially displaceable connected to each respective attachment (15, 16), in such a manner that radially outer ends of the agitator wings (17) during rotation are elastically supported via support surfaces against the inner surface of the cooking vessel (10). The support force contributing to the centring of the drive-shaft (18, 19) in relation to the inner surface of the vessel (10). <IMAGE>

Description

TECHNICAL AREA

BACKGROUND OF THE INVENTION The present invention relates to a mixer for mixing or stirring liquids or pasty masses in a cylindrical cookware, such as for preparing meals in commercial kitchens. The mixing device comprises at least one vertical drive shaft connected to a gear, which drive shaft is substantially coaxial with or aligned with the longitudinal axis of the cooking vessel and is provided with fastening means for fixing at least three mixing disks.

PREVIOUS TECHNIQUES

Cookware with mixers are used in commercial kitchens. Such devices are known, for example, from SE-A-rf25210, which discloses a drive unit which can be raised or lowered and thus moved and moved from one pot to another. As the development has shifted towards agitators equipped with scrapers made of plastic or rubber that clean the sidewall and bottom of the bowl, the resulting friction has increased the load on the gear unit and its stand. Of course, the drive unit and rack can be made more robust to withstand heavy loads. However, such a stronger design is relatively costly since the design must be made in such a way that the gear unit can be raised and lowered.

SP-A-455264 discloses a cookware having a removable horizontal stand that holds the mixer even when the mixer drive unit is off. The disadvantage of this arrangement is that the cleaning of the vessel becomes much more complicated. This solution does not allow the use of scrapers or brushes.

DISCLOSURE OF THE INVENTION

It is an object of the present invention to provide a mixing device for cookware which allows trouble-free cleaning of the cookware while reducing the load on the gear unit.

The object of the present invention has been achieved in that the mixing discs of the invention are radially movably connected to the fastening means such that the radially protruding outer ends of the mixing discs are resiliently supported by their supporting surfaces during rotation. centering the drive shaft relative to the inner wall of the cookware.

Automatic centralization can be achieved in a very simple and effective manner by means of the arrangement of the invention and also provides support for the agitator shaft.

In a preferred embodiment of the invention, the fastening means comprise substantially radially directed rods which are arranged in parallel, parallel to each other, and longitudinally photographed channels for receiving the rods are provided on the mixing plates. The rod-shaped fixing mechanism and the channels in the mixing pits facilitate installation and dismantling without creating difficult-to-clean surfaces.

In another preferred embodiment of the invention, the channels are provided in the form of open slits in the mixing wells, one of which slits at least 90 ° to the other. This design of the mixing pads allows the mixing pads to be assembled from extruded profiles.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention will be described in more detail with reference to an embodiment, with reference to the accompanying drawings, in which:

Fig. 1 is a side view of the mixing device according to the invention, together with the cooking vessel, a

Fig. 2 is an enlarged scale, view and partially sectional view showing the attachment of a mixing disc which is part of the mixing device shown in Fig. 1;

Fig. 3 shows an anchorage of the mixing tray according to Fig. 2 in another view, a

Fig. 4 is a plan view of the attachment of Figs. 2 and 3, and

Figure 5 is an end view of the mixing van.

METHODS OF CARRYING OUT THE INVENTION

Fig. 1 schematically illustrates the cooking vessel 10 with the cylindrical inner wall 11. In practice, the agitator 12 can be coupled to a gear not shown which can be raised and lowered in a manner similar to that described in SE-A-rf25 210.

The mixing device 12 includes an upper rotor 13 of the mixer and a lower rotor 14 of the mixer, each of which is provided with fastening means 15 and 16 for fastening three mixing discs 17. For the sake of simplicity, only two mixing discs 17 are shown on each rotor 13,14 in FIG.

The locking means 16 of the lower rotor 14 is mounted on an inner shaft 18 which is driven in one direction of rotation by the gear unit. The retaining means 15 of the upper rotor 13 is mounted on an outer tube shaft 19 which surrounds the shaft 18 and is driven in the opposite direction of rotation of the gear unit. The positioning device 20 serves to axially position the inner shaft 18 relative to the outer tube shaft 19.

Figure 2 illustrates the lower locking member 16 provided with radially projecting rods 21, 22, cylindrical in cross-section and arranged parallel to each other with a certain positional displacement relative to each side of the center of rotation of the axis 18 (see Figs.

3 and 4). The cross-section of the bar 22 is slightly larger than the cross-section of the bar 21.

The mixing discs 17 are made with the profile shown in Fig. 5, which allows high-efficiency, low-cost manufacturing, for example the mixing discs 17 can be produced by extrusion. The mixing pins 17 are provided with channels 23 and 24 which extend in the longitudinal direction and are sized to receive the rods 21, 22. This means that the 24 channels are slightly wider

GB 215 286 Β less than the 23 channels. Given that a pair of rods carrying the associated mixing pins 17 have different diameters and the widths of the channels 23, 24 are different, it is possible to prevent the mixing pins 17 from being properly mounted on the fastening means 15. The channel 23 extends from a trailing edge of the mixer 17 to a given distance parallel to the plane of the mixer 17. The other channel 24 runs parallel to the channel 23, starting from the rear side of the mixing bowl 17 towards the front of the mixing bowl 17 for a given distance. The angle between the walls of the two channels 23, 24 is slightly greater than 90 ° so that the agitator plate is firmly fixed and not twisted from the rods 21, 22.

The upper rotor 13 is of the same design as the lower rotor 14, however, the rods 21, 22 are offset in the axis of rotation of the shaft 18 relative to the rotor 14, since the rotor 13 rotates in the opposite direction.

The mounting and dismounting of the mixing discs 17 from the fastening means 15, 16 is very easy. When the mixing device 12 is removed from the cooking vessel 10, the mixing discs 17 can be pulled off the rods 21, 22 in the longitudinal direction. The mixing vanes 17 are easy to clean since the channels 23, 24 are wide and have a low depth so that they are easily accessible. In addition, the fastening members 15, 16 and the rods 21, 22 have an easy-to-clean surface.

The mixing discs 17 are provided with a single scraping edge 25 which, in the lowered position of the mixing apparatus, allows the rotor 14 to scrape the inner wall of the bottom of the cooking vessel 10. Because the mixing discs 17 can move radially, they are resiliently supported relative to the cylindrical inner wall 11 of the cooking vessel 10 during rotation of the apparatus. This means that the mixing discs 17 are capable of scraping and cleaning the inner surfaces even when raising or lowering the mixing device in the cooking vessel 10. In addition, the agitator disks 17 are automatically centered relative to the central axis of the cooking vessel 10, which facilitates the centering of the drive shaft relative to the inner wall 11 of the cooking vessel 10, thereby reducing the load on the gear unit and its stand.

The invention is not limited to the above-described embodiment, numerous variations are possible within the scope of the claims. Thus, for example, the stirring anchors 17 and the fastening means 15, 16 may be formed in a form other than that shown herein. It is also not absolutely necessary that the mixing device be provided with two rotors 13, 14, a single rotor design is possible.

Claims (4)

PATENT CLAIMS A mixing device for mixing and / or mixing liquids or pasty masses in a cylindrical cooking vessel, preferably for preparing meals in commercial kitchens, comprising a at least one vertical drive shaft connected to an engine, the drive shaft being substantially coaxial with or at least longitudinal to the cooking vessel. provided with fastening means for fastening three agitator wires, characterized in that the agitator wings (17) are radially movably connected to the fastening means (15, 16) so that the radially protruding outer ends of the agitator wires (17) are resiliently supported by their main surfaces during rotation. (10) on the inner wall (11) of the support, which forces the centering of the drive shaft (18, 19) relative to the inner wall (11) of the cooking vessel (10). Mixing device according to Claim 1, characterized in that the fixing means (15, 16) comprise substantially radially directed rods (21, 22) arranged in parallel, parallel to each other, and longitudinally extending on the mixing discs (17). channels (23, 24) for receiving rods (21, 22) are provided. Mixing device according to Claim 2, characterized in that the channels (23, 24) are formed in the mixing pockets (17) in the form of open slits, one of which slits at least 90 ° to the other slit. Mixing device according to claim 3, characterized in that the mixing discs (17) are made of extrudable profiles.