Tetra Laval Holding & Finance S.a.

Tetra Laval Holdings & Finance S.a.

Henrik Guldmann Rasmussen

Morten Have Kudsk

A conveyor screw for conveyance of high viscose masses and an apparatus with such a conveyor screw, preferably for production of an ice cream. Said crew having a plurality of screw flights, where at least two screw flights extend from an inlet end part of the conveyor screw and wherein the outer edges of the two screw flights extend in different radial distance from longitudinal axis. Whereby the radially shorter screw flight assists with the conveyance of a part of the mass without affecting the whole mass and especially without affecting the ice layer, which by use of the conveyor screw in a through-flow freezer is created on the inner wall of the freezing cylinder. Cooling the mass to a temperature of &#x2212;15&#xb0; C. or lower as preparation for extrusion of the mass for formation.

Conveyor screw for use as surface scraper in cooling and freezing units

A plant for continuous flow freezing of edible ice products is built up in a freezing section ( ) with a tray conveyor ( ), the drive chain of which leads trays carrying the items to be frozen from an entrance to the freezing section ( ) and around a conveyor support frame ( ), and where by means of at least one fan or blower ( ), a flow of freezing air from at least one freezing aggregate ( ) is brought to pass across the items to be frozen during passage along the conveyor support frame ( ). With the view to achieving a maximum speed of the flow of freezing air in relation tot he average speed of the air flow across the items, and compact construction while still providing easy access for maintenance and cleaning, there is disclosed an embodiment comprising at least two conveyor support frames ( ) placed at the side of each other, and where the frames ( ) in all comprise at least one freezing aggregate ( ) and at least one fan or blower ( ) for driving the flow of freezing air.

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Tranbjerg, Denmark

Henrik Guldmann Rasmussen