| 摘要 |
<p>PROBLEM TO BE SOLVED: To restrain leakage of high pressure gas by preventing deformation of the valve seat or the like so as to improve freezing capability and durability. SOLUTION: Discharge holes 29b, 30b of stopper plates 29, 30 are disposed in generally opposite positions of an anti-intake valve side outer edge portion E1 and a tip outer edge portion E2 of discharge valves 27a, 28a. Therefore, a contact area of a partition portion S between the discharge valves 27a, 28a and intake valves 27d, 28d and the stopper plates 29, 30 is not decreased by the discharge holes 29b, 30b, thereby seat performance is improved. As a result, when pressure difference is generated between the discharge chamber and the compression chamber, valve seats 27, 28 and the valve plates 29, 30 get less likely to be deformed to the side of the compression chamber. Accordingly, amount of the high pressure gas which leaks from the discharge chamber to the intake chamber and the compression chamber is reduced.</p> |
