Helical conveyor food freezer

Details Helical conveyor food freezer Helical conveyor food freezer

F - Mech Eng,Light,Heat,Weapons

25

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F25D 25/02 (2006.01) B65G 15/02 (2006.01) B65G 17/06 (2006.01) F25D 25/04 (2006.01)

Patent

CA 2072146

A freezer (10) includes an insulat- ed enclosure (12) for maintaining low temperatures therewith and a conveyor belt (20) that carries food products throughout the enclosure (12). The con- veyor belt (20) includes a straight-line path section (40) and at least one helical path section (22a) and is driven by verti- cal drive elements (32) carried by a rotat- ing drum (28) about which the conveyor helical path section (22a) is located. Up- on entering a helical path section (22a) from a straight-line path section (40), the conveyor belt (20) undergoes expansion only, with the inner ends of its transverse rods (52) maintaining a precise spacing which allows smooth interengagement between heads at the inboard ends of the rods (52) and the leading surfaces of the vertical drive elements (32) that are locat- ed along the circumference of the rotat- ing drum (28) which defines the curved helical path (22a). Because of the im- proved arrangement, both an ascending helical path and a descending helical path can be established within a single freezer with both rotating drums (28) simply driven by a single motor (30).

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