Gas separation – With guide means effecting removal of constituent layer out... – At escape means for heavier constituent
Patent
1975-08-18
1977-06-07
Lutter, Frank W.
Gas separation
With guide means effecting removal of constituent layer out...
At escape means for heavier constituent
55337, 55426, 55431, 55459B, 55467, B01D 4516
Patent
active
040280764
ABSTRACT:
An air precleaner for internal combustion engines having a central conduit for conducting precleaned air to the air intake of the engine. A housing is disposed around the central conduit and forms an air intake opening, an arcuate wall spaced radially outwardly from the conduit and substantially concentric therewith for conducting the incoming air stream from the intake opening around the conduit so that any dust in the air stream is collected along the housing wall by centrifugal action, and a dust outlet for discharging dust from the housing at the downstream end of the arcuate wall. The conduit forms clean air port near the downstream end of the arcuate wall for discharging clean air from the inner region of the space between the arcuate wall and the conduit. An internal baffle integral with one side of the intake opening extends between the arcuate wall and the conduit and forms a restricted passageway that increases the velocity of the incoming air at the upstream end of the arcuate wall. The internal baffle also forms a dust-receiving chamber at the downstream end of the arcuate wall, with the dust-receiving chamber communicating with the dust outlet for discharging dust from the housing. A suction fan withdraws air through the dust outlet so as to draw ambient air into the housing through the intake opening. The inlet to the dust-receiving chamber is spaced a substantial distance away from the innermost end of the restricted passageway so that the volume of the air passageway within the precleaner is increased between the restricted passageway and the dust-receiving chamber, thereby reducing the velocity of the air stream before it reaches the opening in the central conduit. The internal baffle is continuously spaced away from the central conduit to permit the relatively clean air that does not enter the opening in the conduit to recirculate around the conduit. The central conduit, the internal baffle, and the side and bottom walls of the housing are all formed as a single unitary molded plastic structure.
REFERENCES:
patent: 325521 (1885-09-01), Finch
patent: 1720536 (1929-07-01), Young
patent: 1753490 (1930-04-01), Whitmore
patent: 2139736 (1938-12-01), Dorham
patent: 2747687 (1956-05-01), Carter
patent: 3792573 (1974-02-01), Borsheim
patent: 3907529 (1975-09-01), Borsheim
Lacey David L.
Lutter Frank W.
Parma Industries, Inc.
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