REFRIGERANT FLOW RATE MEASURING METHOD AND AIR CONDITIONER

• Main Authors: SATO TAIZO, MATSUMURA YOSHITO, TSUKIJI TETSUHIRO, KOYABU EITARO
• Format: Patent
• Language: English
• Published: 05.04.2007
• Subjects: BLASTING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; HEATING; LIGHTING; LIQUEFACTION SOLIDIFICATION OF GASES; MANUFACTURE OR STORAGE OF ICE; MECHANICAL ENGINEERING; REFRIGERATION MACHINES, PLANTS OR SYSTEMS; REFRIGERATION OR COOLING; WEAPONS

PROBLEM TO BE SOLVED: To provide a refrigerant flow rate measuring method and an air conditioner capable of accurately measuring a mass flow rate of a refrigerant as gas-liquid two phase flow with a simple constitution. SOLUTION: Flow velocity, pressure and temperature of the refrigerant flowing in a refrigerant circuit 110 are detected, a refrigerant flow rate is calibrated by a calibration formula 142 on the basis of the detected flow velocity, pressure and temperature, and a mass flow rate of the refrigerant is calculated on the basis of the calibrated refrigerant flow velocity, thus the mass flow rate of the refrigerant of gas-liquid two phase flow can be accurately calculated. Accordingly, this method dispenses with a large-size expensive device such as a Coriolis-type flow meter, and is very effective when used in mass-production of the air conditioner. COPYRIGHT: (C)2007,JPO&INPIT