Cylinder head arrangement for a piston compressor
The invention concerns a cylinder head arrangement for a piston compressor, with a cylinder block, in which a compression chamber is formed, which is delimited on one side by a valve plate that is clamped between the cylinder block and a cylinder head cover. In order to provide a cylinder head arrangement that has a high degree of tightness and can be manufactured in a cost-effective manner, the valve plate ( 6 ) has on at least one side at least one bead ( 40 ) projecting from the valve plate surface ( 21 ) concerned.
1 . A cylinder head arrangement for a piston compressor, with a cylinder block, in which a compression chamber is formed, which is delimited on one side by a valve plate that is clamped between the cylinder block and a cylinder head cover, wherein on at least one side the valve plate has at least one bead projecting from the valve plate surface concerned.
2 . The cylinder head arrangement according to claim 1 , wherein the bead extends along a closed line.
3 . The cylinder head arrangement according to claim 1 , wherein both sides of the valve plate have a bead projecting from the corresponding valve plate surface, the beads extending along a substantially closed line.
4 . The cylinder head arrangement according to claim 1 , wherein the valve plate is made as a sintered part.
5 . The cylinder head arrangement according to claim 1 , wherein at least on one side, particularly on both sides, the valve plate has at least one, particularly several spacer pieces.
6 . The cylinder head arrangement according to claim 5 , wherein the spacer piece(s) project(s) somewhat more from the corresponding valve plate surface in question than the related bead.
7 . The cylinder head arrangement according to claim 1 , wherein several through-holes are made in the valve plate.
8 . The cylinder head arrangement according to claim 1 , wherein a valve seat of a suction valve and a valve seat of a discharge valve are impressed in the valve plate.
9 . The cylinder head arrangement according to claim 1 , wherein a gasket is located between the valve plate and the cylinder block and between the valve plate and the cylinder head cover, respectively.
10 . The cylinder head arrangement according to claim 9 , wherein the extension of the bead perpendicularly to the belonging valve plate surface is smaller than the thickness of the gasket concerned.
11 . The cylinder head arrangement according to claim 10 , wherein the extension of the bead perpendicularly to the belonging valve plate surface is 5 to 75%, particularly 25 to 50% of the thickness of the gasket concerned.
12 . The cylinder head arrangement according to claim 1 , wherein on the valve plate surface facing the cylinder block the bead surrounds a projection of the opening of the compressing chamber on this valve plate surface.
13 . The cylinder head arrangement according to claim 1 , wherein on the valve plate surface facing the cylinder block the bead surrounds at least one suction opening and at least one pressure opening.
14 . The cylinder head arrangement according to claim 1 , wherein on the valve plate surface facing the cylinder head cover the bead surrounds a projection of the opening of a discharge chamber on this valve plate surface.