Inversion type ventilating fan

Details Inversion type ventilating fan Inversion type ventilating fan

1996-02-27

1998-02-24

Joyce, Harold

Ventilation

Having outlet airway

With air pump

415 60, 454345, 454354, F24F 706

Patent

active

057206619

ABSTRACT:
The ventilating fan system comprises an air flow passage including a duct for guiding the air in a room to outside and a ventilating fan arranged in the air flow passage; whereby said ventilating fan is an inversion type ventilating fan, in which opposed rotating blades arranged in a direction perpendicular to flowing direction of the air are rotated in reverse directions, and the ventilating fan is arranged at an end portion of the air flow passage closer to outside and sucks the air in the room and discharges it to outside.

REFERENCES:
patent: 1734449 (1929-11-01), Smith
patent: 2082955 (1937-06-01), Hagen
patent: 2828682 (1958-04-01), Marker

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