Fluid handling – Systems – Multi-way valve unit
Patent
1990-11-07
1991-11-26
Hepperle, Stephen M.
Fluid handling
Systems
Multi-way valve unit
123527, F16K 11076
Patent
active
050675230
ABSTRACT:
An air-gas controller unit to supply a gas-fired burner with a combustible air-gas mixture, the unit serving to modulate the volumetric flow rate of the mixture without, however, altering the ratio of air to gas which is pre-set for optimum combustion efficiency. The unit includes a valve body whose cylindrical cavity accommodates a hollow cylinder functioning as a mixing chamber, one end of which is open to discharge the air-gas mixture into a mixture outlet in the valve body. The cylinder is turnable within the cavity from a maximum to a minimum valve setting by a rotary control element attached to its other end. Formed in the cylinder is an air orifice which at maximum setting lies in full registration with a gas inlet in the valve body. Also formed in the cylinder is a gas orifice which at maximum setting lies in full registration with a gas inlet in the valve body. The relative portions of the orifices are such as to afford a desired ratio between the air and gas fed into the mixing chamber. As the cylinder is turned toward minimum setting, the air and gas orifices proceed, in corresponding degrees, to fall out of registration with their respective inlets, thereby adjusting the volumetric flow rate of air and gas admitted into the chamber while maintaining the ratio therebetween.
REFERENCES:
patent: 1136276 (1915-04-01), Scaife
patent: 3034533 (1962-05-01), Black
patent: 3286735 (1966-11-01), Yindrock
Ebert Michael
Hepperle Stephen M.
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