| 摘要 |
PROBLEM TO BE SOLVED: To remarkably reduce a refrigerant flowing sound by constituting a throttle of a porous permeable material for communicating in a refrigerant flowing direction. SOLUTION: A first chamber heat exchanger is connected to a first channel 21 of a second flow control valve 6 of the air conditioner, a second chamber heat exchanger is connected to a second channel 22, and a main valve seat 23 opened at the second channel is formed integrally with a valve body. A main valve disc 24 vertically slides along an inner surface of a body of the valve 6, and a throttle is constituted of the seat 23 and the disc 24. An electromagnetic coil 25 for driving the disc 24 is energized or deenergized based on a command from a controller, thereby opening or closing the disc 24. The disc 24 is molded of a porous permeable material. The disc 24 is constituted of a sintered metal (manufactured by charging a metal powder or alloy powder in a mold, pressure molding the powder, and then sintering the powder at a temperature of its melting point or below). |
