Patent ID: 6988372

Claim:
An ice cream making system, comprising: an evaporator including a cooling chamber, the cooling chamber having an ice cream input and an ice cream output, wherein liquid ice cream is provided at the ice cream input and frozen ice cream is provided at the ice cream output wherein the evaporator includes a first evaporator chamber and a second evaporator chamber, wherein refrigerant travels from the first chamber to the second chamber, the second chamber ensuring the first chamber being flooded with the refrigerant; a gate at the ice cream output; at least one valve at the ice cream input, the valve allowing the liquid ice cream to enter the cooling chamber and the valve preventing the liquid ice cream from entering the cooling chamber, the valve including a control input; and a control system coupled to the control input the control system ensuring that the valve is closed when the gate is closed, wherein the valve is controlled to ensure that the cooling chamber is not more than 50 percent filled when the gate is closed.