| 摘要 |
<p>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.</p> |
