MULTI-AIR CONDITIONER

• Main Authors: ISOZUMI SHINICHI, MAENO MASASHI, MITOMA KEISUKE, WATANABE SATOSHI
• Format: Patent
• Language: English
• Published: 17.04.2008
• Subjects: AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING; BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; RANGES; VENTILATING; WEAPONS

PROBLEM TO BE SOLVED: To provide a multi-air conditioner capable of shortening a starting time in heating. SOLUTION: A compressor is started first (step S100), and a lapse time from the start is judged (step S101). When the lapse time is shorter than a certain prescribed time M, starting is judged, and further whether a high pressure-side pressure of the compressor is higher than a prescribed pressure P or not is judged (step S103). In a situation that the high pressure-side pressure is not higher than the prescribed pressure, a target temperature change value is transmitted to slave control means 18, 25, 33 of indoor machines 12, 13, 14 from a master control means 8 to change a target temperature to a value lowered by a constant value (step S104). Then the target temperature is fixed for one minute (step S105), and loop control is performed again to judge whether the lapse time is longer than M (step S101). As indoor expansion valves 21, 28, 36 are throttled, and a discharge pressure by the compressor is easily increased, a starting time for heating can be shortened. COPYRIGHT: (C)2008,JPO&INPIT