G - Physics
05
D
137/139
G05D 7/00 (2006.01) F24F 11/047 (2006.01) F24F 13/14 (2006.01) G05D 7/01 (2006.01)
Patent
CA 1231619
ABSTRACT OF THE DISCLOSURE The present invention provides a flow regulator for gaseous substances, particularly a flow regulator for air in air-conditioning and ventilation installations, for maintaining the volumetric flow of the gaseous substance at desired magni- tude with sufficient accuracy when the differential pressure acting across the flow regulator varies within given limits. The flow regulator comprises an envelope and a regulating mem- ber rotatably disposed in the flow passage defined by the en- velope. The torque produced by the flow of gaseous substance on the regulating member and a countertorque dependent on the position of the regulating member cause the regulating member rotating in the flow passage to assume a position of equilibrium such that the requisite pressure drop is obtained for maintain- ing the volumetric flow rate at predetermined magnitude. The range of operation of the flow regulator is changeable by regulat- ing the size, dependent on the different angular positions of the regulating member, of the effective flow aperture between the regulating member and the flow passage. The effective size of the regulating member is changeable in order to change the size of the effective flow aperture. The regulating member comprises overlapping parts disposed to move so that the effective size of the regulating member is changeable.
454711
Aalto Erkki
Villikka Reijo
Yla-Hemmila Veikko
Halton Oy
Marks & Clerk
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