| 摘要 |
PROBLEM TO BE SOLVED: To provide a showcase cooling system contributable to energy saving. SOLUTION: The showcase cooling system comprises a plurality of showcases 10, 20 and 30 each including a solenoid valve opening/closing-controlled based on a deviation between an inside temperature and a set value thereof to control the inflow of refrigerant to an evaporator, and a refrigerator 40 constituting a refrigeration cycle with the plurality of showcases 10, 20 and 30, the refrigerator 40 being controlled so that the operation rates of the solenoid valves of all the showcases 10, 20 and 30 are converged into a predetermined range. Each of the plurality of showcases 10, 20 and 30 comprises an electronic expansion valve, and when the operation rate of the solenoid valve 21 of a certain showcase 20 is not converged into the predetermined range, the opening of the electronic expansion valve 22 of the showcase 20 is controlled so that the operation rate of the solenoid valve 21 of the showcase 20 is converged into the predetermined range. COPYRIGHT: (C)2007,JPO&INPIT
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