Ice Maker Evaporator Assembly with Covered Back and Dual Insulation

The patent extracts the problematic back surface of the evaporator from the ice-making process by covering it with an evaporator housing. This isolation prevents extraneous heat transfer and moisture contact with the refrigerant tubing, eliminating the source of corrosion while maintaining efficient heat transfer on the exposed front surface.

The patent introduces an intermediary evaporator housing that acts as a barrier between the refrigerant tubing and the external environment. This housing prevents direct contact between moisture/air and the tubing, eliminating corrosion pathways while allowing controlled heat transfer through the evaporator pan.

The patent removes the requirement for plating by extracting the refrigerant tubing from direct exposure to corrosive environments. The evaporator housing creates a protected environment where bare copper tubing can operate without corrosion, eliminating the need for additional plating processes.

The patent replaces expensive and complex plating processes with a simpler evaporator housing structure. The housing provides corrosion protection through its physical barrier rather than through costly metallurgical treatments, simplifying manufacturing.

The patent combines the evaporator pan and evaporator housing into a single integrated structure that serves multiple functions: it supports the serpentine tubing, provides insulation, and protects against corrosion. This merging eliminates the need for separate insulation components while maintaining thermal efficiency.

The evaporator housing serves multiple functions simultaneously: it acts as a structural support for the tubing, provides thermal insulation, prevents corrosion, and defines the evaporator assembly boundaries. This multi-functionality reduces overall device complexity despite adding insulation capabilities.