| 摘要 |
A system for making frozen comestibles, and the like, having an over-run, and comprises a swept surface heat exchanger to which refrigeration means are connected. The system comprises a gas/mix system which includes a positive displacement pump (55) having a variable drive (57), with an inlet for a mix. A magnetic flow meter (59) receives mix from the pump outlet and provides a signal proportional to the flow of mix therethrough. The flow meter discharged into a conduit (61) which communicates with the inlet to the heat exchanger. A gas flow control means (67) is connected between the mix conduit and a source of pressured gas. A programmable computer (73) receives signals from the flow meter and controls the variable drive on the pump and the pressured gas through the gas flow control means. The system may include means responsive to viscosity changes in the heat exchanger to control the refrigeration means. <IMAGE> |
