초록 ▼

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 con

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.

대표청구항 ▼

An air precleaner for internal combustion engines having air intakes, said precleaner comprising the combination of a. a conduit for conducting precleaned air to the air intake of the engine, b. a housing disposed around said conduit and having an air intake opening, an arcuate wall adjacent said in

An air precleaner for internal combustion engines having air intakes, said precleaner comprising the combination of a. a conduit for conducting precleaned air to the air intake of the engine, b. a housing disposed around said conduit and having an air intake opening, an arcuate wall adjacent said intake opening and spaced radially outwardly from said conduit and substantially concentric therewith for conducting the incoming air stream from said intake opening circumferentially around said conduit so that any dust in said air stream is collected along the housing wall by centrifugal action, a pair of end walls attached to opposite ends of said arcuate wall, and a dust outlet for discharging dust from said housing at one end of said arcuate wall, said conduit having a clean air port near said one end of said arcuate wall for discharging clean air from the inner region of the space between said arcuate wall and said conduit, said conduit also having an open end which extends through one of the end walls of said housing, c. an internal baffle integral with said arcuate wall and extending between said arcuate wall and said conduit at said intake opening, said internal baffle forming a restricted passageway that increases the velocity of the incoming air at the other end of said arcuate wall and also forming a dust-receiving chamber at said one end of said wall, said dust-receiving chamber communicating with said dust outlet for discharging the dust from said housing, said internal baffle extending around a major portion of said conduit and spaced therefrom to form a recirculating passageway for recirculating any clean air that does not enter said clean air port around said conduit and back toward said clean air port without mixing said clean air with the incoming air in said restricted passageway, said internal baffle extending to a point such that the space between said arcuate housing wall and said conduit is uninterrupted between said restricted passageway and said dust receiving chamber so as to provide an enlarged chamber in which the velocity of the air stream is reduced to facilitate discharge of the clean air through said clean air port, and d. means for withdrawing air from said housing through said dust outlet so as to draw ambient air into said housing through said intake opening.