Household refrigerator with air circulating and cooling arrangement

In a refrigerator cabinet including a fresh food storage compartment to be maintained at a temperature above freezing and a freezer compartment to be maintained at a temperature below freezing, an air circulating and evaporator arrangement comprising:

• a partition dividing said compartments including a first wall portion defining the upper wall of said fresh food compartment including an inlet opening, and a second wall portion defining the lower wall of said freezer compartment including an air inlet and an air outlet;
• air passageways in said partition for directing air through said compartments communicating between said inlet in said first and second wall portions and said outlet in said second wall portion;
• fan means mounted on said second wall portion arranged in said partition for circulating air from said inlets in said first and second wall portions through said evaporator chamber to said outlet in said second wall portion;
• an evaporator including a tubular member bent to form at least two interconnected helically coiled portions extending transversely in said evaporator chamber, the longitudinal axis of said coils being substantially parallel to each other and perpendicular to said air circulating from said inlets to said outlets, the axis of one of said coils being elevated relative to the axis of the other coil so that air entering said evaporator chamber from said inlets will impinge on both of said coiled portions of said evaporator to thereby increase the frost tolerance of said evaporator.