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US 6,182,455 B2Granted
Apparatus for controlling cooling unit
AssigneeSanyo Electronic Co., Ltd.
InventorToshiya Kikuyama
Life of this patent
Estimating the term…
Abstract
Disclosed is an apparatus for controlling a cooling unit, for instance, for an automatic vending machine. A condenser fan motor and an evaporator fan motor are of DC motors having high energy efficiency. The condenser fan motor is started by a gradually increasing Dc voltage, and the condenser fan motor and the evaporator fan motor are sequentially starred with a predetermined time interval.
Claims9
An apparatus for controlling a cooling unit, comprising:
- a first DC motor for a condenser fan and a second DC motor for an evaporator fan provided in said cooling unit;
- a DC power supply for said first and second DC motors;
- and
- a controller for controlling said DC power supply to apply a controlled DC voltage to said first DC motor at the starting stage of said first DC motor, said controlled DC voltage being lower than a DC power supply voltage and controlled to be gradually increased at predetermined time intervals.
1 more element
Dependencies are inferred from the claim text.