Single piece valve plate assembly for a reciprocating compressor
A valve plate assembly for a compressor according to the principles of the present disclosure includes a valve plate and a suction valve retainer. The valve plate is configured to separate suction-pressure working fluid entering a cylinder of the compressor from discharge-pressure working fluid exiting the cylinder of the compressor, the valve plate defining a discharge valve seat. The suction valve retainer is configured to retain a suction valve within a suction valve seat disposed about a central longitudinal axis of the cylinder and to extend radially outward from the central longitudinal axis of the cylinder without extending beyond a suction passage of the compressor.
1. A valve plate assembly for a compressor assembly that includes a compressor housing defining multiple cylinders, the valve plate assembly comprising:
a valve plate configured to separate suction-pressure working fluid entering the cylinders of the compressor housing in a first direction from discharge-pressure working fluid exiting the cylinders of the compressor housing in a second direction, the valve plate defining a discharge valve seat; and
a suction valve retainer configured to retain a suction valve within a suction valve seat disposed about a central longitudinal axis of one of the cylinders and to extend radially outward from the central longitudinal axis without extending radially beyond a suction passage of the compressor housing, wherein:
the suction valve retainer is configured to sealingly contact an outer perimeter of the suction valve to limit movement of the suction valve in the second direction when discharge-pressure working fluid is expelled from the cylinders of the compressor housing;
the suction valve retainer includes interconnected annular disk portions that are each configured to be disposed about the central longitudinal axis of one the cylinders;
the valve plate and the suction valve retainer are separate from each other;
the valve plate is configured to be mounted to a first mounting surface of the compressor housing, and the suction valve retainer is configured to be mounted to a second mounting surface of the compressor housing that is different than the first mounting surface; and
the first mounting surface is raised relative to the second mounting surface.
2. The valve plate assembly of claim 1 , wherein the valve plate is configured to be attached to the compressor housing using fasteners, and the fasteners do not extend through the suction valve retainer when the valve plate assembly is assembled to the compressor housing.
3. The valve plate assembly of claim 1 , wherein the valve plate includes a flat portion and hollow conical frustum portions projecting from the flat portion and configured to extend toward the cylinders when the valve plate is mounted to the compressor housing, each of the hollow conical frustum portions defining the discharge valve seat.
4. The valve plate assembly of claim 3 , wherein the flat portion of the valve plate defines holes disposed about an outer perimeter of the flat portion for receiving fasteners to attach the valve plate to the compressor housing.
5. The valve plate assembly of claim 4 , wherein the valve plate further includes collars disposed about the holes and projecting from the flat portion of the valve plate, the collars being configured to locate the valve plate relative to the compressor housing in a plane parallel to the first mounting surface of the compressor housing.
6. The valve plate assembly of claim 1 , wherein the suction valve seat is defined by the compressor housing.
7. The valve plate assembly of claim 1 , wherein the suction valve has a first surface configured to face a piston within one of the cylinders and a second surface opposite of the first surface, and the second surface of the suction valve is configured to engage the suction valve retainer.
8. The valve plate assembly of claim 1 wherein the suction valve seat is recessed relative to the second mounting surface.