| 摘要 |
PROBLEM TO BE SOLVED: To reduce any wasteful power consumption, and to obtain the optimal cooling temperature or heating temperature by controlling the number of rotation of an evaporator fan motor, and generating convection in the container only by necessary quantity as necessary. SOLUTION: The number of rotation of a right evaporator fan motor 7, a middle evaporator fan motor 6, and a left evaporator fan motor 5 is controlled according to the in-container temperature of a right column 4, a middle column 3, and a left column 2 in which merchandise is housed during a cooling operation and heading operation. COPYRIGHT: (C)2003,JPO
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