US 2003/0194337 A1 · Cylinder assembly of hermetic compressor

Abstract

A cylinder assembly of a hermetic compressor has a valve plate disposed on an outer side of a cylinder block to cover an open side of a cylinder, the valve plate defines a refrigerant discharge hole therethrough which is adapted to discharge a compressed refrigerant from the cylinder. A cylinder head disposed to cover the outer side of the valve plate defines a refrigerant discharge chamber in cooperation with the valve plate. A discharge valve is disposed between the valve plate and the cylinder head in a cantilever fashion with a central portion thereof covering the refrigerant discharge hole. A restricting mechanism comprising a first stopper member protruding from an inner wall of the cylinder head a distance such that a terminal edge of the first stopper member is at a predetermined distance from a free end of the discharge valve for restricting movement of the discharge valve. During the opening of the refrigerant discharge hole, the discharge valve is deformed such that the central portion deformed toward said cylinder head while movement of the free end of the discharge valve limited due to the first stopper member.

Claims17

Dependent claims

A cylinder assembly of a hermetic compressor, comprising:

a valve plate disposed on an outer side of a cylinder block to cover an open end of a cylinder, said valve plate having a refrigerant discharge hole therethrough adapted to discharge a compressed refrigerant from the cylinder;
a cylinder head disposed to cover an outer side of said valve plate, said cylinder head defining a refrigerant discharge chamber in cooperation with said valve plate;
a discharge valve disposed between said valve plate and said cylinder head in a cantilever manner, a center portion of said discharge valve covering said refrigerant discharge hole;
and
said cylinder head comprising a restricting mechanism comprising an integral first stopper member protruding from an inner wall of said cylinder head a distance such that a terminal end of said first stopper member is at a predetermined distance from a leading end of said discharge valve, said restricting mechanism for restricting a movement of said discharge valve, wherein during operation and opening of said refrigerant discharge hole, said discharge valve is deformed such that a center portion thereof deforms toward said cylinder head while the leading end is moved within a limited range due to said first stopper member impinging on said discharge valve.

2 more elements

A cylinder head assembly for a cylinder block of a hermetic compressor comprising:

a cylinder head having a refrigerant discharge chamber covering said cylinder block and aligned therewith to define an inner direction toward said cylinder block and an outer direction toward said cylinder head;
a valve plate disposed between said cylinder block and said cylinder head, said valve plate having a refrigerant discharge hole integrally formed therethrough;
a discharge valve sheet disposed between said valve plate and said cylinder head, said discharge valve sheet having an integrally formed, resiliently flexible discharge valve having a free end and a fixed end, said discharge valve aligned with said discharge hole of said valve plate;
said cylinder head, valve plate and discharge valve sheet are all sized and configured to be aligned and fastened together and to said cylinder block by a single fastening mechanism;
wherein said cylinder head includes an inner configuration comprising a refrigerant discharge chamber generally aligned with said discharge valve, and an integral restricting mechanism to limit movement of said discharge valve when the compressor is in operation and refrigerant is discharged from the cylinder block.

2 more elements

Dependencies are inferred from the claim text.

Cylinder assembly of hermetic compressor

Life of this patent

Cylinder assembly of hermetic compressor

Life of this patent

Abstract

Claims17