Ice machine with a dual-circuit evaporator for hydrocarbon refrigerant
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United States of America Patent
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Dec 19, 2023
Grant Date -
Nov 3, 2022
app pub date -
Jan 7, 2022
filing date -
Dec 21, 2015
priority date (Note) -
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Abstract
An ice making machine having a refrigeration system designed for hydrocarbon (HC) refrigerants, and particularly propane (R-290), that includes dual independent refrigeration systems and a unique evaporator assembly comprising of a single freeze plate attached to two cooling circuits. The serpentines are designed in an advantageous pattern that promotes efficiency by ensuring the even bridging of ice during freezing and minimizing unwanted melting during harvest by providing an even distribution of the heat load. The charge limitations imposed with flammable refrigerants would otherwise prevent large capacity ice maker from being properly charged with a single circuit. The ice making machine includes a single water circuit and control system to ensure the proper and efficient production of ice. Material cost is conserved as compared to a traditional dual system icemaker.
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