Energy saving operation method and energy saving type vending machine for cooling compressor

摘要

PROBLEM TO BE SOLVED: To provide a power saving operation method of a compressor for cooling for shortening the compressor-on time near the lower limit value of a target temperature range and a power saving type automatic vending machine. ;SOLUTION: The cooling operation of plural chambers 1A, 1B, and 1C is provided with a simultaneous operation and one chamber operation and operation stop as one operation cycle, and a control temperature is provided with a normal temperature Ts and an upper limit value Tu and a lower limit value Td. When any chamber temperature reaches the upper limit value Tu, a compressor 25 is started, and the simultaneous operation of the chambers 1A, 1B, and 1C is executed, and when any chamber reaches the normal temperature value Ts, only one chamber is selected according to a selection reference, and one chamber operation is executed, and when the chamber temperature reaches the lower limit value Td, the cooling of the chamber is stopped, and another chamber is successively selected, and one chamber operation is executed, and after one chamber operation of all the chambers is executed in one operation cycle, when the temperature of the chamber selected at last reaches the lower limit value Td, the compressor 25 is stopped, and the cooling of all the chambers 1A, 1B, and 1C is stopped.;COPYRIGHT: (C)2001,JPO