Plural component proportioning system and method
AssigneeGraco Minnesota Inc.
InventorsDavid A. Bordwell, Jonathan R. McMichael, Thomas V. Vo
Life of this patent
Estimating the term…
Abstract
A plural component dispensing system 10 receives separate fluid components, mixes the components in a predetermined ratio, and dispenses the components as mixture. Each fluid component is supplied by a separate pump 12A, 12B to an individual variably controllable fluid regulator 14A, 14B. Each fluid component is supplied from its individual fluid regulator 14A, 14B through a flow meter 18A, 18B to a mixing device 20. The ratio of the components delivered to the mixing device 20 is controlled by the individual fluid regulators 14A, 14B based upon the flow rates measured by the flow meters 18A, 18B.
Claims14
A system comprising:
- a plurality of positive displacement pumps, each pump for delivering a separate fluid component;
- a plurality of fluid regulators, each fluid regulator connected to one of the pumps for regulating fluid pressure of one of the fluid components;
- a plurality of flow meters, each flow meter for measuring flow rate of one of the fluid components;
- a device for receiving the separate fluid components;
- and
- a control system that controls the fluid regulators based on the sensed flow rates to produce a desired ratio of the separate fluid components.
A method comprising:
- individually pumping a plurality of separate fluids;
- individually measuring flow rate of each of the separate fluids;
- delivering the separate fluids to a receiving device;
- and
- individually regulating fluid pressure of each of the separate fluids as a function of the flow rate measured for that fluid to produce a desired target ratio of the separate fluids delivered to the receiving device.
A fluid mixing system comprising:
- a first pump for delivering a pressurized first fluid;
- a second pump for delivering a pressurized second fluid;
- a first fluid regulator for regulating fluid pressure of the first fluid;
- a second fluid regulator for regulating fluid pressure of the second fluid;
- a first flow meter for measuring flow rate of the first fluid;
- a second flow meter for measuring flow rate of the second fluid;
- a mixing device for receiving the first fluid and the second fluid and delivering mixed fluid based on a mix ratio of the first fluid and second fluid;
- and
- a controller that causes the second fluid regulator to regulate the fluid pressure of the second fluid so that the flow rate of the second fluid is scaled to the measured flow rate of the first fluid to produce the mix ratio.
Dependencies are inferred from the claim text.