Ventilator

Details Ventilator Ventilator

1980-06-16

1982-08-03

Makay, Albert J.

98 75, 98 83, F23L 1702

Patent

active

043422586

ABSTRACT:
A ventilator for use on a conduit having an upwardly open mouth has a generally toroidal annular flow body surrounding the conduit immediately below the mouth thereof. This body has an outer wall having an outwardly convex lower portion spaced outwardly from the conduit and an upper portion extending generally asymptotically upward and inwardly from the lower portion to the conduit and joining the conduit substantially at the mouth. Air flow is induced over the body to create a low-pressure zone at the mouth by providing a horizontal deflector disk suspended above the mouth and having an outer periphery extending outwardly beyond the mouth so as to define with this mouth an annular gap having a flow cross section greater than that of the mouth. The disk may be combined with a fan that generates a downwardly flaring air stream that moves downwardly around the periphery of the disk and across the gap.

REFERENCES:
patent: 1348513 (1920-08-01), Morey
patent: 2824507 (1958-02-01), Alldritt
patent: 3347147 (1967-10-01), Howard
patent: 4200035 (1980-04-01), Zaniewski

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