According to the present invention, there is provided a compressor including: a piston reciprocated in a cylinder; a valve seat plate provided with a port through which a fluid passes along with the reciprocation of the piston; a valve provided in the valve seat plate to open/close the port; a valve receiver regulating the degree of opening of the valve; and a stress suppression member provided between the valve and the valve receiver, wherein the stress suppression member includes a valve exposing portion exposing the valve.

A reciprocating compressor according to an aspect includes a driving unit; a connecting rod; a piston; a cylinder; and a valve assembly, wherein the valve assembly includes a valve plate forming a main body, a suction inlet and a discharge outlet disposed at the valve plate and coming in communication with a compression space of the cylinder to guide a refrigerant flow, a suction valve and a discharge valve disposed at the valve plate and selectively opening the suction inlet and the discharge outlet, and a plurality of coupling portions disposed at the valve plate, and a plurality of corresponding coupling portions disposed to correspond to each of the plurality of coupling portions and preventing the valve assembly from being erroneously assembled are disposed at the cylinder.

An apparatus for a compressor head assembly with a discharge valve comprises a valve plate having a first face and a second face, wherein at least one cavity is located on the second face and a reed valve assembly sized to be contained in the at least one cavity. The reed valve assembly comprises a reed valve plate with at least one orifice, the reed valve plate selected according to a rated compressor displacement a retainer portion; and a reed retained by the retainer portion proximate to the reed valve plate and oriented to inhibit air flow through the at least one orifice in a closed state. The reed valve assembly is removably secured to the valve plate to facilitate changing the characteristics of the reed valve assembly without changing the valve plate.

The present relation relates to the technological field of compressors. Problem to be solved: The current reciprocating compressors valves arrangements includes valves whose flexion area suffer from direct interference of the body disposed immediately over said valve. Such feature, besides damaging de valve movement, further causes wear phenomena on the flexion areas of the valve, which can result in critical fault of the valve and consequently of the compressor. Resolution of the problem: It is revealed a valve arrange whose end valve capable of moving includes a flexion area previously defined and intentionally misaligned with any contact area of the body immediately disposed over the valve.

Semi-commanded valve system applied to an alternative-type compressor with at least a cylinder (1), at least a piston (2), at least a compression chamber (3), and at least one valve (71;81) acting in their respective orifice (7;8). Said at least one valve (71;81) is prestressed in a first operation state and is able to act as a check valve. Furthermore, said at least one valve (71;81) has at least a ferrous portion and can be selectively actuated by a magnetic field generating element (72;82). Method of modulating the capacity of a compressor provided with such a semi-commanded valve system.

Provided is a check valve including: a duckbill valve; and a support member which is inserted into an inside portion of the duckbill valve, in which the duckbill valve includes a slit which is provided on a side where fluid is discharged, an inflow port which is provided on a side where the fluid flows in, and a flow path which connects the inflow port to the slit, and in which the support member is inserted into the flow path from the inflow port, a hole for sending the fluid to the slit when flowing in from the inflow port is provided, and the hole is provided so as to be hermetically sealed by the duckbill valve when a negative pressure is applied from the inflow port side.

A valve assembly includes a seat plate having a top surface and a bottom surface, a plurality of first valve modules arranged in a first level relative to the seat plate such that a first seating face of each of the plurality of first valve modules is substantially co-planar with a first plane that is substantially parallel to at least one of the top surface and the bottom surface of the seat plate, and at least one second valve module arranged in a second level relative to the seat plate such that a second seating face of the at least one second valve module is co-planar with a second plane that is substantially parallel to the first plane, wherein the second plane is offset from the first plane by a first distance.

Systems and methods for enhancing performance in a reciprocating compressor are described. The compressor includes a cylinder, a crank shaft housing, a crank shaft, a motor, a motor housing and rod assembly. The rod assembly includes a coupling rod portion, a head portion, a cup seal, a cap and one or more valves. The rod assembly is configured to reciprocate within the cylinder so as to compress fluid within a space formed by the cylinder. The rod assembly is driven by the crank shaft. The one or more valves are configured to control air to the compressor. The one or more valves are removably coupled to the head portion, such that the one or more valves remain coupled to the head portion when the cap is detached from the coupling rod assembly.

An improved air compressor includes a cylinder fitted with a piston body, a main frame for mounting a motor, and an air storage container. The cylinder defines at its top wall a plurality of exit holes, which are separated by a plurality of blocking walls and regulated by a resilient sheet having a plurality of branches corresponding to the exit holes. When the compressed air produced in the cylinder pushes the resilient sheet up to open the exit holes, the instantaneous high-pressure air that flows through the exit holes can be restrained by the air blocking walls to prevent the air from interfering with movements of the branches of the resilient sheet, so that the piston body can conduct reciprocating motion more smoothly and thus the performance of the air compressor can be increased.

An improved motor includes a cylinder defining multiple exit holes of different diameters, which are respectively controlled by a resilient sheet having multiple branches to communicate with an air storage container. In operation, when a piston body conducts reciprocating motion in the cylinder, the compressed air produced in the cylinder can quickly enter the air storage container. The branches of the resilient sheet are subjected to different back force resulting from the compressed air in the air storage container, wherein the smallest branch of the resilient sheet is subjected to a smallest back force, so that the compressed air produced in the cylinder can enter the air storage container more easily through the smallest exit hole, so that the piston body can conduct reciprocating motion more smoothly and thus the performance of the air compressor can be increased.