Ventilator with air-to-air heat exchanger and pressure responsiv

Details Ventilator with air-to-air heat exchanger and pressure responsiv Ventilator with air-to-air heat exchanger and pressure responsiv

1993-07-19

1995-07-25

Ford, John K.

Heat exchange

Structural installation

Related to wall, floor or ceiling structure of a chamber

165154, 454241, 454249, 454253, 34 86, F24H 302, F24F 710

Patent

active

054353777

ABSTRACT:
A ventilator for clothes dryers and the like includes a counterflow heat exchanger through the wall of the building containing the apparatus, with an entry passage for ambient air entering the building and an exist passage for heated waste air leaving the building. An external housing defines an outlet chamber communicating with the exit passage, and an inlet chamber communicating with the entry passage. The chambers are both open to the ambience, and the two openings are adjacent one another, with a damper mounted for pivotal movement between a closed position in which the damper closes both of the openings, and an open position in which it opens both of the openings. The damper is biased toward the closed position, but is moveable toward the open position by a build-up of air pressure in the exit passage.

REFERENCES:
patent: 1529711 (1925-03-01), Parrott et al.
patent: 1825498 (1931-09-01), Wogan
patent: 2467018 (1949-04-01), Eggleston
patent: 4744409 (1988-05-01), Berner
patent: 4952283 (1990-08-01), Besik
patent: 5000081 (1991-03-01), Gilmer
patent: 5036906 (1991-08-01), Rylewski
patent: 5117563 (1992-06-01), Castongway
patent: 5239834 (1993-08-01), Travers

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