Fan inlet guide vane assembly

Rotary kinetic fluid motors or pumps – Selectively adjustable vane or working fluid control means – Upstream of runner

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F04D 2946

Patent

active

042995353

ABSTRACT:
An inlet guide vane assembly for controlling air flow through a fan. A plurality of shafts are mounted extending radially inward of an inlet cone, and are affixed to a hub positioned at the center of the cone and concentric thereto. Rotatably mounted on each shaft is an adjustable inlet vane, having a crank arm extending from its root end. Cam follower bearings are used to rotatably mount a ring on the hub. The ring is connected to each of the crank arms by a link having a ball and socket joint at each end. Rotation of the ring thereby causes the inlet vanes to rotate about their supporting shafts without binding.

REFERENCES:
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patent: 2621848 (1952-12-01), Bentley
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patent: 4187879 (1980-02-01), Fermer et al.
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Trane Company Drawing, dated 2-2-61, No. 3103.

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