Method and apparatus for controlling operation of a soft-serve m

Details Method and apparatus for controlling operation of a soft-serve m Method and apparatus for controlling operation of a soft-serve m

1980-03-31

1981-06-30

Tapolcai, Jr, William E.

Refrigeration

Processes

Treating an article

62136, 62228, A23G 900

Patent

active

042755670

ABSTRACT:
A method and apparatus for controlling operation of a semi-frozen product dispensing machine. The control system includes a viscosity sensing mechanism for sensing the viscosity of the product in the freezing chamber and for shutting off flow of refrigerant to the freezing chamber evaporator when the product reaches the desired viscosity. The control system also includes a refrigerant pressure sensing mechanism for sensing the pressure on the refrigerant in the freezing chamber evaporator when the supply of refrigerant is shut off and for restarting the refrigerating mechanism when the refrigerant pressure in the evaporator rises to a preselected value. The control system also includes circuitry for restarting the refrigerating mechanism when the dispensing valve is opened.

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patent: 3013398 (1961-12-01), Thomas
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patent: 3180104 (1965-04-01), Goetz
patent: 3228203 (1966-01-01), Swenson
patent: 3519910 (1970-07-01), Pfaff et al.
patent: 3600657 (1971-08-01), Pfaff et al.
patent: 3608779 (1971-09-01), Cornelius
patent: 3642174 (1972-02-01), Cornelius
patent: 3698203 (1972-10-01), Stoelting
patent: 3823571 (1974-07-01), Smith et al.

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