Space static pressure control

Details Space static pressure control Space static pressure control

1981-11-27

1987-11-10

Cohan, Alan

Fluid handling

Line condition change responsive valves

Pilot or servo controlled

98 15, G05D 1600

Patent

active

047050667

ABSTRACT:
A system for controlling static pressure within a controlled space having an air flow sensor mounted in a hole in a wall in a controlled space for sensing the amount of air moving through the hole, a check valve associated with the air flow sensor for allowing air flow past said air flow sensor in only one direction, and an air flow controller connected to the air flow sensor and responsive thereto for controlling static pressure within the controlled space. A damper may be located in a supply duct for controlling the supply of air to the space and a second air flow sensor may be connected between the first air flow sensor and the damper and located to sense the air flowing through the supply duct so that changes in air flow in the supply duct can be controlled by the damper before such changes effect the static pressure within the controlled space.

REFERENCES:
patent: 2407258 (1946-09-01), DelMar
patent: 2435819 (1948-02-01), Crever
patent: 3145638 (1964-08-01), Fischer
patent: 3410191 (1968-11-01), Jackson
patent: 3465666 (1969-09-01), Knab
patent: 3611906 (1971-10-01), Lorenz
patent: 3977466 (1976-08-01), Johansson
patent: 4175934 (1979-11-01), Lang et al.

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