COOLING DEVICE AND OPEN SHOWCASE

PROBLEM TO BE SOLVED: To reduce power consumption in a long period from start to a normal cycle operation in a cooling device in which a rotational frequency of a compressor is controlled. SOLUTION: This cooling device includes a control device C for making a present temperature approach a target te...

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Bibliographische Detailangaben
Hauptverfasser:	ISHIKAWA TSUYOSHI, KANEKO HIROSHI, KURIHARA HIROYUKI, HATAKEYAMA TOMOHIKO, ISHIKAWA MASAMICHI, FUJITANI KIYOSHI
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING COLD ROOMS COMBINED HEATING AND REFRIGERATION SYSTEMS COOLING OR FREEZING APPARATUS NOT COVERED BY ANY OTHERSUBCLASS HEAT PUMP SYSTEMS HEATING ICE-BOXES LIGHTING LIQUEFACTION SOLIDIFICATION OF GASES MANUFACTURE OR STORAGE OF ICE MECHANICAL ENGINEERING REFRIGERATION MACHINES, PLANTS OR SYSTEMS REFRIGERATION OR COOLING REFRIGERATORS WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To reduce power consumption in a long period from start to a normal cycle operation in a cooling device in which a rotational frequency of a compressor is controlled. SOLUTION: This cooling device includes a control device C for making a present temperature approach a target temperature by proportionally controlling at least the rotational frequency of the compressor 26 configuring a refrigerating cycle, on the basis of deviation e between the target temperature and the present temperature. The control device C decreases a coefficient to perform the control based on the deviation e when the present temperature is higher than the target temperature, and increases the coefficient when the present temperature is lower than the target temperature. COPYRIGHT: (C)2011,JPO&INPIT