Ice making machine, method and evaporator assemblies

Details Ice making machine, method and evaporator assemblies Ice making machine, method and evaporator assemblies

2006-10-04

2009-06-02

Tapolcai, William E (Department: 3744)

Refrigeration

Processes

Congealing flowable material, e.g., ice making

C062S351000

Reexamination Certificate

active

07540161

ABSTRACT:
Ice making machine that uses PETD harvest technology, evaporators, ice molds and cooling system. One evaporator makes thin layers of ice that are laminated to form a larger ice piece. Other evaporators include an ice forming surface on a material that has good thermal conductivity for forming ice in a freeze mode and good electrical conductivity to serve as a resistive heater during a harvest mode. One evaporator has a plate and an array of freezing sites that extend above a surface thereof. Another evaporator has a plate that is divided into strips of good and poor thermal conductivity by. Another evaporator has a refrigerant tube that is sandwiched between a pair of corrugated sheets that have ice forming surfaces. Another evaporator has a waffle style pan that is constructed of a dielectric layer sandwiched between a pair of copper layers. Another evaporator forms an ice slab on an inclined flat surface, which after harvest is diced into cubes with a wire grid. A cooling system uses an evaporator to provide a cooling air to an ice mold to form ice and uses PETD energy to harvest the ice and defrost the evaporator.

REFERENCES:
patent: 2995017 (1961-08-01), Breeding
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patent: 6870139 (2005-03-01), Petrenko
patent: 2004/0149734 (2004-08-01), Petrenko et al.
patent: 2006/0288726 (2006-12-01), Mori et al.

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