Foods and beverages: apparatus – Cooking – Filled receptacle type
Patent
1993-05-07
1995-01-17
Scherbel, David A.
Foods and beverages: apparatus
Cooking
Filled receptacle type
99483, 100287, A23L 310
Patent
active
053817265
DESCRIPTION:
BRIEF SUMMARY
The present invention has for an object a device for holding objects inside a rotating drum.
More precisely, the invention relates to a device for holding objects which are placed inside the rotating drum of apparatus such as sterilizers or the like.
Sterilization of objects or of products in the food or pharmaceutical industry such as tins, jars, receptacles, bottles, etc., is often effected in so-called autoclaves in which the products to be treated are introduced then removed after the treatment has terminated. These products to be treated are disposed in baskets, stackable trays or like elements. For certain of these products, the heat treatment for sterilization must be effected by a rotating movement of the product inside its packing. This movement of rotation is produced by the rotation, within the autoclave, of a drum containing baskets filled with the products to be sterilized. The same type of problem is raised for draining or tipping certain products on an apparatus other than an autoclave which is in that case called drainer or tipper. This operation allows elimination of the water deposited on these products by gravity during sterilization.
French Patent 86 02046 describes in detail an example of such a sterilization autoclave with rotating drum.
During rotation of the drum, it is necessary to avoid any movement of the products which might cause them damage or break them, by immobilizing them inside the drum with the aid of a holding device. In general, the individual products are stacked in troughs or placed on trays and it is the assembly of these troughs or trays which must be held inside the drum. To maintain the objects in place inside a rotating drum, it has already been proposed, as in French Patent Application FR-A-2 605 226, to control trays for holding the objects with the aid of jacks acting perpendicularly to the holding plate. Such a solution indeed makes it possible to obtain holding of the objects inside the drum, without manual intervention, but it is not satisfactory insofar as the effective holding of the objects depends on the correct functioning of the jacks and the supply system thereof. In addition, the functioning of jacks in an environment which may be aggressive or at least at high temperature, is unreliable.
It has also been proposed in U.S. Pat. No. 2,629,312 to ensure holding of objects inside a rotating drum with the aid of mechanisms for displacement of a pressure plate, this mechanism being actuated manually with the aid of a crank. This solution is hardly satisfactory insofar as the environment in which if must intervene is hostile and insofar as such manual interventions do not allow a chain for automatically treating the objects to be set up.
In order to overcome the drawbacks mentioned above, an object of the invention is to provide a device for maintaining objects in a rotating drum, particularly a sterilizer or like apparatus, which makes it possible, on the one hand, to ensure an efficient pressing of the product or the baskets containing the products in automatic manner and which, in addition, ensures such clamping in reliable manner during the whole operation of heat treatment corresponding, for example, to the sterilization of the products.
To attain this object, the device for holding objects in a rotating drum, according to the invention, is characterized in that it comprises at least one pressure plate presenting a substantially plane bearing face and means inside the drum for displacing the plate between a position of rest and a position of hold in which the bearing face of the plate is applied against the upper face of the objects to be held, the displacement means comprising: threaded portions, at least one portion having a direction of threading opposite that of the other threaded portion or portions; portions; presenting one end articulated on said plate; directions of rotation when the motor is supplied; and end wall of the drum substantially along the axis of rotation thereof, whereby, in a first direction of rotation, the link arm systems bri
REFERENCES:
patent: 256904 (1882-04-01), Laass
patent: 293401 (1884-02-01), Barrows
patent: 2629312 (1953-02-01), Davis
patent: 4097235 (1978-06-01), Stock
Naveros Francisco
Roumagnac Jean-Patrick
Alexander Reginald L.
Barriquand Steriflow
Scherbel David A.
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