초록 ▼

A proportional flow controller, having a combination of common-diameter, viscosity-insensitive orifices, accurately combines two or more liquids, for a range of flow rates. A common pressure is applied to all liquids causing equal pressure drops for the orifices, thereby ensuring stable flow ratios.

A proportional flow controller, having a combination of common-diameter, viscosity-insensitive orifices, accurately combines two or more liquids, for a range of flow rates. A common pressure is applied to all liquids causing equal pressure drops for the orifices, thereby ensuring stable flow ratios. Control is achieved without moving parts or electrical components, for flow rates low enough for spray painting and adhesive application. A flow passage junction, downstream of all orifices, provides for combining and discharging the liquids.

대표청구항 ▼

[ I claim:] [10.] A controller for proportionally combining two or more simultaneously flowing liquids comprising:a. a port for receiving one of said liquids under pressure, as from a garden hose, andb. containers, separately enclosing the remainder of said liquids, andc. in combination, said port a

[ I claim:] [10.] A controller for proportionally combining two or more simultaneously flowing liquids comprising:a. a port for receiving one of said liquids under pressure, as from a garden hose, andb. containers, separately enclosing the remainder of said liquids, andc. in combination, said port and a pressurizing means making the pressure in said port common to said liquids, andd. a separate flow path in combination with a plurality of viscosity insensitive orifices of substantially common and relatively small diameter, for each of said liquids, whereby the coefficients of discharge of said orifices, for any of said liquids, maintain a substantially constant ratio relationship with those of said orifices associated with any other of said liquids, throughout the working flow rate range, ande. a junction of all flow paths for combining and discharging said liquids, whereby the relative proportions of the combining liquids remain substantially constant over the working flow rate range.