The longer the compressor runs the more the temperature differential across the pan will lessen. The middle of the pan might get cold but the outer edges are not likely to reach the desired temperature. Second, this type of regulation doesn't allow the pan surface temperature to equalize. This will lead to an early failure of your compressor. First, turning the compressor on and off frequently is not good for it. With the cheap pans on the market, the temperature is regulated in these systems simply by turning the compressor on and off. This vapor is then sucked back into the compressor where it is again compressed back to a high-pressure high-temperature vapor, starting the entire cycle over again. As the refrigerant warms, it changes back to a low-temperature low-pressure vapor. This is what cools the ice cream pan's surface. This low temp liquid refrigerant then enters the cold pan's cooling coils, where heat is absorbed by the refrigerant travelling through the tubes. The liquid refrigerant then goes through a capillary tube which drops the pressure and temperature of the liquid. This hot refrigerant vapor goes through the condenser/fan unit which removes the heat from the gas and transforms it to a hot liquid refrigerant. A compressor outputs a high-pressure high-temperature refrigerant vapor. The cheapest machines on the market use a single simple refrigeration loop. Click the photo below for a larger view of the ice cream roll machine refrigeration schematics.Īn ice cream roll machine can be constructed several different ways. In this article, we take a look at how different types of rolled ice cream machines work. We are often asked how a rolled ice cream machine works.
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