| 摘要 |
<P>PROBLEM TO BE SOLVED: To operate a compressor reliably in an unloaded mode at the minimum capacity without using a magnetic clutch, etc. and to configure the variable capacity compressor to be small. <P>SOLUTION: A pressure-sensitive bellows 16 is disposed inside a bellows-housing chamber 13. A valve body 9 is opened and closed by abutting the valve body 9 against the pressure-sensing bellows 16. The impelling force of a plunger spring 36 is set to be stronger than the impelling force of a valve-opening spring 15. When the electromagnetic coil device 30 is de-energized, the impelling force of the plunger spring 36 causes the pressure-sensing bellows 16 to contact the valve body 9 via the plunger 35. If the suction pressure Ps inside the bellows-housing chamber 13 changes, the pressure-sensing bellows 16 is expanded or contracted while the valve body 9 side is kept as a fixed point, allowing the plunger 35 to move freely and keeping the valve body 9 from moving, and unloaded operation is maintained. Alternatively, when the electromagnetic coil device is energized, the valve body side of the pressure-sensing bellows is kept as a fixed point and unloaded operation is maintained. <P>COPYRIGHT: (C)2013,JPO&INPIT |
