Power unit cooling device
AssigneeHonda Motor Co., Ltd.
InventorsYutaka Inomoto, Yoshiaki Tsukada, Takashi Ozeki
Life of this patent
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Abstract
A centrifugal fan is mounted to an inner plate of a centrifugal clutch as a heat-generating rotating device, and an intake port of a casing is formed near a front side in the axial direction of the centrifugal fan. The centrifugal fan includes a base plate connected to the inner plate of the centrifugal clutch, plural fins formed on the base plate, blow-off holes each formed between arbitrary adjacent fins and extending axially through the base plate, and guide walls for guiding a radially outward air flow over the base plate into the blow-off holes. Air just after admitted from the intake port passes through the blow-off holes and is blown against the centrifugal clutch.
Claims12
A power unit cooling device, comprising:
- a casing of a power unit which is constructed to accommodate a power source and a power transmission mechanism;
- a centrifugal fan disposed within the casing constructed so that air introduced from an axial front side of the centrifugal fan is allowed to flow through an interior of said casing by a blow-off action of the centrifugal fan;
- wherein the centrifugal fan is mounted on a rotary shaft of a heat generating rotating device that generates heat during operation, and a flow dividing mechanism for dividing a part of an air flow to be blown off radially outwardly and air flow to be blown off axially towards a back side of the centrifugal fan is provided with said centrifugal fan.
A centrifugal fan of a power unit cooling device for a motor vehicle, the fan comprising:
- a disk shaped base plate including a front side, a rear side, and a center portion, the center portion being constructed to connect to a rotary shaft;
- a plurality of fins formed on the face of the base plate constructed to direct air flow radially away from the fan;
- a hole formed through said base plate between a pair of adjacent fins;
- and
- a guide wall formed between the adjacent fins constructed to direct air from the front side of the base plate through the hole to the back side of the base plate.
A power unit cooling device for a motor vehicle, comprising:
- a casing constructed to house a heat generating rotating device, the heat generating rotating device including a rotary shaft;
- a centrifugal fan disposed within the casing on the rotary shaft of the heat generating rotating device, wherein the centrifugal fan includes a means for directing air flow from a front side of the fan radially away from the fan and axially through the fan.
Dependencies are inferred from the claim text.