Refrigeration – Time or program actuator – Defrosting
Patent
1991-05-13
1993-02-23
Tapolcai, William E.
Refrigeration
Time or program actuator
Defrosting
62239, 624571, F25D 308
Patent
active
051879450
ABSTRACT:
A refrigerated container incorporating welded corrugated steel external walls having insulation disposed within the interior to form an insulated structure. A refrigeration compressor power by an electric motor together with a diesel engine operatively connected to an electrical generator for supplying power to the electric motor is secured integral with the container externally of the insulated interior but positioned at one end and protected by the extended sides, top and bottom of the container walls. Fuel storage is also provided at one end of the container. Refrigeration evaporators extend longitudinally at the juncture of the sidewalls and the internal ceiling of the container with evaporator coils distributed along both sides of the container; air is forced over the evaporator coils by strategically placed tandem centrifugal blowers directing air outwardly generally parallel to the ceiling and transverse to the length of the container. Air return is provided by extruded T-shaped floor rails spaced apart to provide a passageway for air penetration into the floor and which are provided with transverse holes to permit the transverse flow of return air through the floor to a sidewall. Return air is routed from the floor through ducts formed by false walls on either side of the container extending upwardly from the floor and terminating at an intake area to the evaporator coils. Alternate evaporators are defrosted in accordance with a timing system using a defrost technique that evaporates a single evaporator at a time while permitting the remaining evaporator or evaporators to continue to refrigerate the container interior.
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patent: 3733849 (1973-05-01), Cantagallo et al.
patent: 4691527 (1987-09-01), Ikeda
Reefco Manufacturing Corporation
Tapolcai William E.
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