Delivery valve for a scroll compressor

In a scroll compressor which includes a stationary scroll plate provided with a scroll wrap, and a revolving scroll plate provided with a scroll wrap and disposed so that the scroll wrap of the stationary scroll plate and that of the revolving scroll plate engage so as to form compression chambers therebetween, the scroll compressor further including a delivery valve, the scroll compressor comprising:

• the stationary scroll plate including a stationary disk providing with a valve element seating surface in the upper surface thereof, a discharge port formed therethrough so as to open in the valve element seating surface, and relief holes formed therethrough at positions on the opposite sides of the discharge port so as to open in the valve element seating surface and so as to open into compression chambers other than a compression chamber into which the discharge port opens;
• a discharge valve element for opening or closing the discharge port, seated on the valve element seating surface of the stationary disk of the stationary scroll plate;
• relief valve elements for individually opening or closing the relief holes, seated on the valve element seating surface of the stationary disk of the stationary scroll plate;
• and
• a valve element holding member holding the discharge valve element and the relief valve elements;
• wherein the valve element seating surface has a concave cylindrical shape, the discharge valve element and the relief valve elements have a cylindrical shape conforming to the concave cylindrical shape of the valve element seating surface, and wherein at least one element of the discharge valve element and the relief valve elements includes a first fixed end and a second free end such that said at least one element has a cantilever mount, and wherein said at least one element extends partially about said valve element holding member.