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1. (WO1991006815) HELICAL CONVEYOR FOOD FREEZER
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/006815 International Application No.: PCT/US1990/006428
Publication Date: 16.05.1991 International Filing Date: 06.11.1990
Chapter 2 Demand Filed: 06.06.1991
IPC:
B65G 17/06 (2006.01) ,F25D 25/04 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
65
CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
G
TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
17
Conveyers having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyers in which the chains form the load-carrying surface
06
having a load-carrying surface formed by a series of interconnected, e.g. longitudinal, links, plates, or platforms
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
25
REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION OR SOLIDIFICATION OF GASES
D
REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT COVERED BY ANY OTHER SUBCLASS
25
Charging, supporting, or discharging the articles to be cooled
04
by conveyers
Applicants:
LIQUID CARBONIC CORPORATION [US/US]; 135 South LaSalle Street Chicago, IL 60603, US
Inventors:
LANG, Gary, Dee; US
SINK, Brian, Evan; US
Agent:
WATT, Phillip, H. ; Fitch, Even, Tabin & Flannery Room 900 135 South LaSalle Street Chicago, IL 60603, US
Priority Data:
432,59407.11.1989US
Title (EN) HELICAL CONVEYOR FOOD FREEZER
(FR) CONGELATEUR DE DENREES ALIMENTAIRES A CONVOYEUR HELICOIDAL
Abstract:
(EN) A freezer (10) includes an insulated enclosure (12) for maintaining low temperatures therewith and a conveyor belt (20) that carries food products throughout the enclosure (12). The conveyor belt (20) includes a straight-line path section (40) and at least one helical path section (22a) and is driven by vertical drive elements (32) carried by a rotating drum (28) about which the conveyor helical path section (22a) is located. Upon 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 located along the circumference of the rotating drum (28) which defines the curved helical path (22a). Because of the improved 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).
(FR) Un congélateur (10) comprend une enceinte isolée (12) où de basses températures sont maintenues et une bande convoyeuse (20) qui transporte des denrées alimentaires dans l'enceinte (12). La bande convoyeuse (20) comprend une section (40) de transport en ligne droite et au moins une section hélicoïdale de transport (22a); elle est entraînée par des éléments verticaux d'entraînement (32) soutenus sur un tambour rotatif (28), autour duquel est agencée la section hélicoïdale (22a) de transport du convoyeur. Lorsque la bande convoyeuse (20) passe d'une section de transport (40) en ligne droite à une section hélicoïdale de transport (22a), elle se dilate, alors que les extrémités internes de ses barres transversales (52) maintiennent un écartement précis, ce qui permet un enclenchement sans problèmes entre les têtes aux extrémités en dedans des barres (52) et les surfaces d'attaque des éléments verticaux d'actionnement (32) situés le long de la circonférence du tambour rotatif (28) qui définit la voie hélicoïdale courbe (22a). Etant donné cet agencement amélioré, on peut établir une voie hélicoïdale ascendante et une voie hélicoïdale descendante dans un seul congélateur, les deux tambours rotatifs (28) étant simplement entraînés par un seul moteur (30).
Designated States: AT, AU, BB, BG, BR, CA, CH, DE, DK, ES, FI, GB, HU, JP, KP, KR, LK, LU, MC, MG, MW, NL, NO, RO, SD, SE, SU
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CM, GA, ML, MR, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
CA2072146AU1990067483