| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a displacement control mechanism in a variable displacement type compressor, preventing the deterioration in operation efficiency of the variable displacement type compressor by making the timing of operating a second control valve appropriate and eliminating a trouble caused by slippage of operation timing of the second control valve. <P>SOLUTION: The displacement control mechanism in the variable displacement type compressor includes a first control valve adjusting the passage section area of a charge air passage 29. The displacement control mechanism includes a second control valve CV2. The second control valve CV2 includes a back pressure chamber 80, a valve chamber 71, a valve hole 27a, a first valve part 79 disposed in the valve chamber 71, and a back surface 81 disposed in the back pressure chamber 80, and is provided with a spool 75 making the opening of the valve hole 27a small by the first valve part 79 when the pressure in the back pressure chamber 80 acting on the back surface 81 gets higher. A check valve 90 is disposed in the charge air passage 29 between the first control valve and a crank chamber 5, and prevents refrigerant from flowing toward the first control valve from a crank chamber 5 by blocking the charge air passage 29. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
