Food freezing conveyor system
First Claim
1. A food freezing conveyor system, comprising:
- an air-tight freezing chamber;
a conveyor apparatus consisting of multiple tiers of conveyors, a lower horizontal conveying mechanism, a lifting conveying mechanism, an upper horizontal conveying mechanism and a dropping conveying mechanism, all mounted in said freezing chamber for conveying food products to be frozen along a substantially inverted-U shaped path;
a plurality of evaporators and a plurality of fan devices for generating freezing air currents of a suitable temperature for freezing food products;
said lifting conveying mechanism and said dropping conveying mechanism being respectively provided with multiple tiers of choke means thereon, each tier of said choke means and each tier of said conveyors commonly define a plurality of inter-communicating freezing air passages, separating freezing operation zones and non-freezing operation zones, andsaid evaporators and said fan devices being disposed substantially diagonally on opposite sides of said freezing chamber in such a way that at least one of said evaporators and at least one of said fan devices are arranged together at one side of said freezing chamber, with at least one of said evaporators and at least one of said fan devices provided together at the other side of said freezing chamber, the freezing air currents generated by said evaporators and said fan devices being drawn into each of said freezing air passages to flow through an upper zone of said lifting conveying mechanism, an upper zone of said dropping conveying mechanism, a lower zone of said dropping conveying mechanism, and a lower zone of said lifting conveying mechanism to complete an airflow cycle, the speed of the freezing air in said upper zone of said lifting conveying mechanism and said dropping conveying mechanism being higher than that of the freezing air in said lower zone of said lifting conveying mechanism and said lower zone of said dropping conveying mechanism.
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Accused Products
Abstract
A food freezing conveyor system includes a conveying apparatus consisting of multiple tiers of conveyors, a lower horizontal conveying mechanism, a lifting conveying mechanism, an upper horizontal conveying mechanism and a dropping conveying mechanism. Food products to be frozen are transported along an inverted-U shaped path within a freezing chamber. The lifting conveying mechanism and the dropping conveying mechanism are respectively provided with multiple tiers of choke plates on both sides. Each tier of choke plates and each tier of conveyors jointly define a plurality of inter-connected airflow passages, dividing a freezing operation zone and a manhole maintenance space. Two sets of evaporators and fan devices disposed diagonally on opposite sides of the freezing chamber generate a freezing air flow of a suitable temperature, which is induced into the airflow passages to flow past an upper freezing zone and a lower freezing zone to complete a circulation cycle, in which the freezing air speed in the upper freezing zone is greater than that in the lower freezing zone.
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Citations
17 Claims
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1. A food freezing conveyor system, comprising:
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an air-tight freezing chamber; a conveyor apparatus consisting of multiple tiers of conveyors, a lower horizontal conveying mechanism, a lifting conveying mechanism, an upper horizontal conveying mechanism and a dropping conveying mechanism, all mounted in said freezing chamber for conveying food products to be frozen along a substantially inverted-U shaped path; a plurality of evaporators and a plurality of fan devices for generating freezing air currents of a suitable temperature for freezing food products; said lifting conveying mechanism and said dropping conveying mechanism being respectively provided with multiple tiers of choke means thereon, each tier of said choke means and each tier of said conveyors commonly define a plurality of inter-communicating freezing air passages, separating freezing operation zones and non-freezing operation zones, and said evaporators and said fan devices being disposed substantially diagonally on opposite sides of said freezing chamber in such a way that at least one of said evaporators and at least one of said fan devices are arranged together at one side of said freezing chamber, with at least one of said evaporators and at least one of said fan devices provided together at the other side of said freezing chamber, the freezing air currents generated by said evaporators and said fan devices being drawn into each of said freezing air passages to flow through an upper zone of said lifting conveying mechanism, an upper zone of said dropping conveying mechanism, a lower zone of said dropping conveying mechanism, and a lower zone of said lifting conveying mechanism to complete an airflow cycle, the speed of the freezing air in said upper zone of said lifting conveying mechanism and said dropping conveying mechanism being higher than that of the freezing air in said lower zone of said lifting conveying mechanism and said lower zone of said dropping conveying mechanism. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification