Control device for a refrigerating apparatus of a vending machin

Details Control device for a refrigerating apparatus of a vending machin Control device for a refrigerating apparatus of a vending machin

1987-06-02

1988-09-27

Wayner, William E.

Heat exchange

Movable heating or cooling surface

Rotary drum

62204, 236 78A, F24F 300

Patent

active

047734728

ABSTRACT:
A temperature control device is disclosed for use in a vending machine having a plurality of storage chambers. The temperature control device includes a refrigerating apparatus provided with a plurality of evaporators which are connected in parallel and disposed individually in the storage chambers. A plurality of electromagnetic valves are coupled in series with the evaporators to control the inflow of refrigerant fluid. The operation of each electromagnetic valve, i.e., the temperature control in each storage chamber is controlled by a comparison of the average temperature of the storage chambers with the actual temperature in each chamber. The operation of the refrigerating apparatus and the electromagnetic valves are also controlled by a comparison between the desired temperature and the actual temperature in each chamber.

REFERENCES:
patent: 4439998 (1984-04-01), Horvay et al.
patent: 4510767 (1985-04-01), Komatsu et al.

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