Pumps – Three or more cylinders arranged in parallel – radial – or...
Patent
1975-05-16
1977-03-08
Croyle, Carlton R.
Pumps
Three or more cylinders arranged in parallel, radial, or...
F04B 112
Patent
active
040110290
ABSTRACT:
A fluid suction and discharge apparatus of a small volume suitable for a fluid compressor which can be used for an air-conditioning system, which includes a cylinder block having a plurality of axially directed cylinders formed therein in annular relation and a single sheet of suction reed valve means which is formed of a metal sheet and with a plurality of holes corresponding to a plurality of cylinders and with a plurality of suction reeds extending in the holes respectively and means for preventing the fluid such as a refrigerant gas from leaking out of the cylinders through the contact gap between the suction reed valve means and a valve plate which the suction reed valve is secured to and is in contact with.
The valve plate is secured onto one end surface of the cylinder block by means of bolts which extend through the valve plate, the suction reed valve means and a gasket which is held between the cylinder block and the suction reed valve means. The valve plate is formed with annular grooves for O-rings at the peripheral portion and at surroundings of holes through which the bolt means extend on one surface thereof facing the suction reed valve means. O-rings are fitted into the annular grooves and compressed between the suction reed valve means and the valve plate, thereby preventing the leakage of the fluid.
The suction reed valve means may be formed with a reduced area less than the radial extent of the valve plate and may be contained in the spot faced recess formed in the end surface of the cylinder block, with a central portion of the gasket being placed in the recess and between the cylinder block and the suction reed valve means and with the peripheral portion of the gasket being directly placed between the cylinder block and the valve plate, thereby the leakage of the fluid being prevented.
REFERENCES:
patent: 2138194 (1938-11-01), Pfauser
patent: 3085514 (1963-04-01), Budzich
patent: 3436085 (1969-04-01), Polk
patent: 3761202 (1973-09-01), Mitchell
patent: 3838942 (1974-10-01), Pokorny
patent: 3861829 (1975-01-01), Roberts et al.
Croyle Carlton R.
LaPointe G. P.
Sankyo Electric Company Limited
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