Device for deriving energy from a flowing medium

Details Device for deriving energy from a flowing medium Device for deriving energy from a flowing medium

1984-10-31

1985-07-23

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

Diverse impellers or working members

416236A, F03D 106

Patent

active

045306443

ABSTRACT:
Each radially extending blade (12) of a wind motor is fitted near its tip with an auxiliary vane (13) which can result in an increase of efficiency. Different from known devices each auxiliary vane (13) is placed with respect to the blade (12) so that the low-pressure peaks of the vanes (13) and the blades (12) are separated one from the other rotation by more than 0.3-times the length of the largest chord. Preferably the auxiliary vanes (13) are designed so that its center of gravity lies in front of the blade (12). The lengthwise axis of the auxiliary vanes (13) makes an angle .alpha. lying between 10.degree. and 40.degree. with the rotational axis (11) of the blades (12), the lateral edges (17) of the vanes (13) is bevelled rearward with respect to the leading edge (16) under an angle .beta. from 15.degree. to 45.degree. and the surfaces meeting surfaces meeting at the lateral edges (17) make an angle .UPSILON. which approaches zero value. The lines generating the underside of the vanes (13) are nearly straight. The imaginary extensions of the surfaces of adjacent vanes (13) as seen from the surface comprising the blades (12), at least contact each other.

REFERENCES:
patent: 4093402 (1978-06-01), Van Holten
patent: 4130378 (1978-12-01), Eichler
patent: 4247252 (1981-01-01), Seki et al.
patent: 4329115 (1982-05-01), Kress
patent: 4362469 (1982-12-01), Van Holten

Affiliated with

Also associated with

Rating

Device for deriving energy from a flowing medium does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Device for deriving energy from a flowing medium, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for deriving energy from a flowing medium will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-632799