摘要:
An apparatus and method for sensing the position of a piston in a valve in a gas compressor or the position of a piston in a free piston engine. The apparatus includes a plurality of valve sensors, a plurality of magnets, and a plurality of valve sense modules coupled to the valve sensors and a controller coupled to the plurality of valve sense modules. The method includes processing information received from the valve sensors to determine the linear position of the valves in the gas compressor or a piston in a free piston engine.
摘要:
A linear compressor is provided that may include a shell in which a discharge port may be provided, a cylinder disposed in the shell to define a compression space for a refrigerant, a piston disposed to be reciprocated in an axial direction within the cylinder, a discharge valve disposed on or at one side of the cylinder to selectively discharge the refrigerant compressed in the compression space, a valve spring coupled to the discharge valve to provide a restoring force, and a stopper coupled to the valve spring to restrict deformation of the valve spring. The stopper may include a guide recessed in a direction in which the valve spring is deformed to reduce an impulse between the stopper and the valve spring.
摘要:
A linear compressor may include a shell, a cylinder provided in the shell to define a compression space for a refrigerant, a frame to fix the cylinder to the shell, a piston reciprocated within the cylinder, a discharge valve disposed on or at one side of the cylinder, a discharge cover coupled to the frame and having at least one chamber to reduce pulsation of the refrigerant discharged through the discharge valve, and a valve spring disposed on the discharge cover to provide a restoring force to the discharge valve. The discharge cover may include a cover body having a discharge hole, through which the refrigerant discharged through the discharge valve may be discharged outside of the discharge cover, and a guide passage defined in the cover body to guide at least a portion of the refrigerant discharged through the discharge valve into the at least one chamber.
摘要:
An automatic ring valve 10 comprising a valve seat 12 provided with a plurality of gas flow passages 14 arranged according to at least one annular row, at least a shutter 18 comprising at least one ring-shaped portion for selectively closing and opening the gas flow passages 14, wherein said ring-shaped portion of the shutter 18 comprises a fiber-reinforced matrix 40, at least one contrasting member for contrasting an opening movement of ring-shaped portion of the shutter 18, wherein said ring-shaped portion of the shutter 18 comprises a structural core 18A made by said fiber-reinforced matrix 40, and wherein at least a portion of said structural core 18A is covered by at least one primary layer 18B, designed to improve fracture and/or impact and/or wear resistance of said ring-shaped portion.
摘要:
A linear compressor is provided that may include a cylinder which defines a compression space for a refrigerant and into which a piston that reciprocates in an axial direction may be inserted, a frame in which the cylinder may be accommodated, a discharge valve that selectively discharges the refrigerant compressed in the compression space for the refrigerant, a spring assembly coupled to the discharge valve, a discharge cover on which the spring assembly may be seated and having a discharge space through which the refrigerant discharged through the discharge valve may flow, and a first gasket seated inside of the discharge cover to support the spring assembly and attenuate vibration during an operation of the discharge valve.
摘要:
A miniature poppet valve assembly for a high-speed compressor, the miniature poppet valve assembly includes a plurality of miniature poppets, each characterized by a stem and a head with a maximum head diameter of no more than 0.9 inches; a cage having a plurality of counter bores disposed therein, each counter bore disposed for receipt of a poppet; and a seat plate overlying the cage, the seat plate including a plurality of through bores axially aligned with the counter bores of the cage. Each counter bore includes a chamfered edge against which the head of the poppet seats, thereby forming a seal. The chamfered edged is provided with a chamfer angle of approximately 30 degrees. In one embodiment, poppet heads have a convex head surface and are shaped so that the tangent angle at the point of contact between the edge and the head is approximately 30 degrees.
摘要:
A reciprocating compressor having an aperture control valve for an inlet passage. Sectional area of the inlet passage is maintained near the outlet holes of the aperture control valve, distribution of flow rates of refrigerant gas drawn into the cylinder bores during inlet stroke is even. A cylinder block is provided with cylinder bores, a valve plate opposing one end of the cylinder block having inlet and outlet hole pairs, and a cylinder head forming an annular outlet chamber and a cylindrical inlet chamber radially inside the outlet chamber. The cylinder head has an inlet passage and an outlet passage, and an aperture control valve with an inlet hole connecting with the inlet passage and outlet holes controlling the aperture of the inlet passage. The aperture control valve is disposed in the inlet chamber.
摘要:
A method and system for fine-tuning the motion of suction or discharge valves associated with cylinders of a reciprocating gas compressor, such as the large compressors used for natural gas transmission. The valve's primary driving force is conventional, but the valve also uses an electromagnetic coil to sense position of the plate (or other plugging element) and to provide an opposing force prior to impact.
摘要:
Valve, in particular for compressors, comprising a seat (1) provided with at least one flow way (111), an obturator member (4) able to obstruct said flow way (111) and movable with respect to said seat in a given direction, and means (5) for resiliently stressing said obturator (4), which are able to force said obturator (4) into a given position and are active in the direction of movement thereof; said resilient stressing means (5) comprise at least one cylindrical helical compression spring (5), characterized by the presence, between all the turns and along the entire working length of the spring (5), of inter-turn apertures.
摘要:
The present invention provides a fluid machine that is capable of reducing noise generated when a fluid such as compressed air passes through a discharge port and that is capable of preventing premature breakage of a discharge valve. The fluid machine comprises a cylinder head 37 that is connected to a cylinder 31, so that the cylinder head 37, the cylinder 31, and a piston 32 define a compression chamber 38. The cylinder head 37 comprises a suction port through which air is sucked into the compression chamber 38, a suction valve for opening and closing the suction port, a discharge port 45 through which air is discharged from the compression chamber 38, and a discharge valve 52 for opening or closing the discharge port 45. The discharge port 45 comprises a plurality of openings 67.