TEMPERATURE CONTROL METHOD OF SHOWCASE

PROBLEM TO BE SOLVED: To provide a temperature control method of a showcase capable of saving energy while keeping interior temperature constant by suppressing generation of overshoot or undershoot. SOLUTION: The interior temperature of the showcase is measured, and temperature control for increasin...

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Bibliographische Detailangaben
Hauptverfasser:	UENO KENICHI, HANAMURA HIDEKI
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING COFFEE MILLS COLD ROOMS COMBINED HEATING AND REFRIGERATION SYSTEMS COOLING OR FREEZING APPARATUS NOT COVERED BY ANY OTHERSUBCLASS DOMESTIC ARTICLES OR APPLIANCES FURNITURE HEAT PUMP SYSTEMS HEATING HUMAN NECESSITIES ICE-BOXES LIGHTING LIQUEFACTION SOLIDIFICATION OF GASES MANUFACTURE OR STORAGE OF ICE MECHANICAL ENGINEERING PAYING COUNTERS REFRIGERATION OR COOLING REFRIGERATORS SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS,STOREHOUSES, BARS, RESTAURANTS OR THE LIKE SPICE MILLS SUCTION CLEANERS IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a temperature control method of a showcase capable of saving energy while keeping interior temperature constant by suppressing generation of overshoot or undershoot. SOLUTION: The interior temperature of the showcase is measured, and temperature control for increasing/decreasing a coolant flow rate of a cooler is performed based on the measured interior temperature, and upper-limit temperature and lower-limit temperature set beforehand, while carrying out time control for increasing/decreasing the coolant flow rate of the cooler within a cycle time T1 set beforehand. When the interior temperature is lower than the temperature set beforehand, the coolant flow rate of the cooler is decreased within a time B set beforehand before starting defrosting operation. COPYRIGHT: (C)2011,JPO&INPIT