REFRIGERATING AIR CONDITIONER AND CONTROL METHOD FOR REFRIGERATING AIR CONDITIONER

• Main Authors: UNEZAKI FUMITAKE, ANZAI YOICHI, KAWASAKI MASAO, HOSAKA TAKASHI, TAMATOSHI JUNJI, MATSUOKA FUMIO
• Format: Patent
• Language: English
• Published: 03.02.2005
• Edition: 7
• Subjects: 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

PROBLEM TO BE SOLVED: To improve operation efficiency of a refrigerating air conditioner cooling objects each having a different target cooling temperature by a plurality of evaporators. SOLUTION: A target temperature setting means individually sets the target cooling temperature of the cooling object by the evaporator, and an evaporator operation determination means determines an operation stop of each the evaporator according to the target cooling temperature and a temperature of the cooling object. A compressor capacity control means determines operation capacity of a compressor on the basis of the target cooling temperature of the operated evaporator (step 12), and performs capacity control operation of the compressor (step 13). Especially, the compressor capacity control means shifts a target value of capacity control on the basis of the higher target cooling temperature among the target cooling temperatures of the operated evaporators. COPYRIGHT: (C)2005,JPO&NCIPI