A compressor has suction reed valves each of which includes a fixation portion fixed to the valve base plate, a basal portion that extends from the fixation portion and is separable from the plate, and a valve flap extending from the basal portion toward the distal end to selectively open and close the suction port. Each suction port has a shape elongated in the width direction, which is orthogonal to the longitudinal direction. The width of the basal portion is greater than that of the suction port. Each valve flap includes an opening-closing portion facing the corresponding suction port and stoppers, which project from the ends in the width direction. The side edges in the width direction are continuous from the stoppers to the basal portion to gradually approach the suction port. The cylinder block has pairs of recessed retainers. The stoppers contact the retainers.

A compressor may include a housing, a piston, and a cylinder head assembly. The housing defines a cylinder and a first valve seat defining a recess. The piston is movable within the cylinder to define a compression chamber. The cylinder head assembly is mounted on the housing and includes a valve plate, a suction valve, a discharge valve and a head cover. The valve plate may be mounted to the mounting surface and may include a suction plenum, a suction passage providing fluid communication between the suction plenum and the cylinder, and a discharge passage. The suction valve can seat on the first valve seat to allow fluid flow through the suction passage. The head cover may include a discharge chamber and an integrally formed guide post extending into the discharge chamber. The guide post may include a pocket that receives a discharge valve stem for reciprocation therein.

A fluid compressor includes a closed container having an inlet, a compression mechanism including a compression chamber in which fluid flowing into the closed container through the inlet is compressed, a discharge port through which the fluid compressed in the compression chamber is allowed to flow, a discharge valve opening and closing the discharge port, and a valve retainer limiting an amount of lift of the discharge valve. The discharge valve includes a curved portion whose shape is defined by one or more curvatures. When the discharge port is closed by the discharge valve, the valve retainer and the discharge valve are spaced apart from each other.

A manually operated pump exhibiting numerous improvement over existing such 5 pumps is described. The pump can include a cylinder that is removeably mounted to a molded valve box of unitary construction. The valve box can feature a valve plate covering a valve chamber and housing an inlet valve and an outlet valve. In some instances, the pump includes a molded piston of unitary construction to which a pair of opposing piston cups is mounted. In some cases, the pump includes a filler cap forming an inlet adapted to deliver a priming fluid 10 into the cylinder. In some cases, the pump includes a stopper cap adapted to prevent a pump shaft from being fully pulled out of the cylinder.

A reciprocating compressor includes a shell, a driving motor, a drive shaft, a piston, a cylinder, a valve plate, a suction valve, and a suction valve stopper. The suction valve stopper is made of an elastic member and disposed between the suction valve and the cylinder to support a reed valve portion of the suction valve and limit an opening amount of the reed valve portion. The opening amount is controlled to increase cooling power in a high load operation area and prevent dead volume to thereby increase energy efficiency in a low load operation area and a high load operation area.

An improved membrane valve and method for manufacturing such membrane valve. The improved membrane valve can be used for transferring fluids or gases in hermetic or semi-hermetic compressors, including a method and system for manufacturing a membrane valve and a membrane valve with applications for use in several motors, particularly in hermetic or semi-hermetic compressors which use, as a refrigeration fluid, an appropriate type of gas thus promoting the refrigeration physical affect. A body and a membrane of the membrane valve are produced from substantially thin metallic plates separately in accordance to an available process and can be subjected to rounding in order to eliminate live corners, and then juxtaposed thus composing the valve, with the above mentioned membrane on one side, fitted to the body which is fixed through a connection process and, on the other side, left free to oscillate.

A synthetic resin film is formed on a region of a valve plate (117) which is brought into contact with an arm portion of a suction valve (120) or a region of the valve plate (117) which is brought into contact with an arm portion of a discharge valve (121). With such a configuration, delay in opening of the suction valve (120) or the discharge valve (121) caused by adhesion force of refrigerating oil is suppressed so that a pressure loss in a suction stroke or a discharge stroke can be reduced whereby compressor efficiency is enhanced. Further, a striking sound generated at the time of closing the suction valve (120) or the discharge valve (121) is reduced by an elastic effect of the synthetic resin film so that the reduction of noises is realized.

Systems and methods disclosed herein include a portable air pump comprising an electric air compressor and a compressor housing enclosing the electric air compressor. The electric air compressor includes an electric motor, a piston cylinder, a piston, and a reed valve. The piston has a piston head within the piston cylinder and a piston rod attached to the electric motor. The piston head includes a piston valve that allows air to enter the piston cylinder. The reed valve is configured to allow air to pass from the piston cylinder to an air outlet while the portable air pump and inflator system is in operation. The piston head further includes a relief channel that defines an opening through the piston head to allow air pressure to escape from within the piston cylinder.

An alternative compressor head arrangement including a valve plate is provided with at least one operating hole. The alternative compressor head arrangement further includes a discharge valve blade provided with at least one operation valve and at least one mounting hole. The alternative compressor head arrangement further includes a stop blade provided with at least one valve stop and at least one mounting hole. The alternative compressor head arrangement further includes a cylinder cap provided with a flange capable of receiving at least one assembly component. The alternative compressor head arrangement further includes a suction valve blade provided with at least one operation valve and at least one mounting. The alternative compressor head arrangement further includes an interface blade provided with at least one mounting hole.

The present disclosure relates to a piston compressor, comprising a crankcase, at least two exhaust mufflers, a valve plate assembly, a cylinder head, a connecting pipe and an exhaust pipe. The cylinder head comprises a cylinder head high-pressure chamber, the crankcase comprises a crankcase exhaust passage, and the crankcase exhaust passage is connected to the cylinder head high-pressure chamber of the cylinder head through a one-way exhaust hole in the valve plate assembly. The crankcase and the valve plate assembly each comprise at least two exhaust holes respectively associated with the at least two exhaust mufflers, and the cylinder head high-pressure chamber of the cylinder head is connected to the at least two exhaust mufflers through the corresponding exhaust holes in the crankcase and the valve plate assembly. The connecting pipe connects the at least two exhaust mufflers, and the exhaust pipe is connected to any one of the at least two exhaust mufflers, thereby forming at least two gas discharge paths. In addition, the present disclosure further relates to a mobile refrigerator comprising the piston compressor.