Fluid handling – Line condition change responsive valves – With separate connected fluid reactor surface
Patent
1983-07-12
1985-06-18
Schwadron, Martin P.
Fluid handling
Line condition change responsive valves
With separate connected fluid reactor surface
13750514, 137521, 267 36A, G05D 701, F24F 1310
Patent
active
045236097
ABSTRACT:
A volume flow or pressure regulating device is described which is especially suitable for air conditioning or air heating systems. The device transmits a torque moment function onto the flap control shaft in response to the flap angle. The device includes primarily a shaft (2) which is rotatably supported and extends through a conduit (3) in which the flap is mounted on the shaft which cooperates with a curved cam disk (10). One end of a tension cable (9) is secured to a circumferential point of the cam disk and the other end of the tension cable (9) is secured to the free end of a bending spring 6, the opposite end of which is secured to a fixed point. An adjustable tensioning member (7) defines, in accordance with its position relative to the length of the bending spring (6) the effective or bendable length of the bending spring (6). By adjusting the tensioning element (7) either manually or by a motor it is possible to change the air volume flow which is to be maintained constant even if the pressure in the channel upstream of the flap or the differential pressure across the flap changes.
REFERENCES:
patent: 1607041 (1926-11-01), Basel
patent: 1776261 (1930-09-01), Kreissig
patent: 3315701 (1967-04-01), Stilwell
patent: 3452762 (1969-07-01), Fahre
patent: 3538945 (1970-11-01), Dean, Jr.
patent: 3911945 (1975-10-01), Dyer et al.
patent: 3965928 (1976-06-01), Siegwart
Fasse W. G.
H. Krantz GmbH & Co.
Kane, Jr. D. H.
Schwadron Martin P.
Shay James R.
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