Back to results
US 11,027,304 B2Granted
Systems and methods for fluid ratio control
AssigneeCarlisle Fluid Technologies, Inc.
InventorEric Julius Donaldson
Life of this patent
Estimating the term…
Abstract
A multi-component fluid delivery system includes a first fluid pump and a second fluid pump. The first and the second fluid pumps are not mechanically coupled to each other. The multi-component fluid delivery system further includes a control system comprising a processor configured to derive a slip ratio for the first fluid pump and the second fluid pump. The processor is additionally configured to apply a master-slave motor control to deliver a specified fluid ratio via the first and the second fluid pumps based on the slip ratio.
Claims16
A multi-component fluid delivery system, comprising:
- a proportioner system comprising two or more fluid pumps and configured to deliver fluids from the two or more fluid pumps into a spray gun to spray a foam,
- a first fluid pump of the two or more fluid pumps;
- a second fluid pump of the two or more fluid pumps, wherein the first and the second fluid pumps are not mechanically coupled to each other;
- and
- a first motor controller configured to control the first fluid pump and a second motor controller configured to control the second fluid pump;
- and
- a control system comprising a processor configured to:
- derive a slip ratio for the first fluid pump and the second fluid pump;
- and
- apply a master-slave motor control to deliver a specified fluid ratio via the first and the second fluid pumps based on the slip ratio, wherein the slip ratio comprises a differential slip ratio having a difference in slip between the first fluid pump and the second fluid pump, wherein the processor is configured to apply the master-slave motor control by selecting one of the first or the second motor controller as a master controller and the other of the first or the second master controller as a slave controller, wherein both the first motor controller and second motor controller are configured to receive a signal directly from the control system.
7 more elements
A method, comprising:
- deriving a slip ratio for a first fluid pump and a second fluid pump, wherein the first the second fluid pumps are included in a proportioner system configured to deliver fluids from the first and the second pumps into a spray gun to spray a foam, and wherein the first and the second fluid pumps are not mechanically coupled to each other, wherein a first motor controller configured to control the first fluid pump and a second motor controller configured to control the second fluid pump, wherein the processor is configured to apply the master-slave motor control by selecting one of the first or the second motor controller as a master controller and the other of the first or the second master controller as a slave controller, wherein both the first motor controller and second motor controller are configured to receive a signal directly from a control system;
- and
- applying a master-slave motor control to deliver a specified fluid ratio via the first and the second fluid pumps based on the slip ratio, wherein the slip ratio comprises a differential slip ratio having a difference in slip between the first fluid pump and the second fluid pump.
A tangible, non-transitory, computer-readable medium comprising instructions that when executed by a processor cause the processor to:
- derive a slip factor for a first fluid pump and a second fluid pump, wherein the first the second fluid pumps are included in a proportioner system configured to deliver fluids from the first and the second pumps into a spray gun to spray a foam, and wherein the first and the second fluid pumps are not mechanically coupled to each other, wherein a first motor controller is configured to control the first fluid pump and a second motor controller is configured to control the second fluid pump:
- and
- provide for a master-slave motor control to deliver a specified fluid ratio via the first and the second fluid pumps based on the slip factor, wherein the slip factor comprises a differential slip ratio having a difference in slip between the first fluid pump and the second fluid pump, wherein the processor is configured to apply the master-slave motor control by selecting one of the first or the second motor controller as a master controller and the other of the first or the second master controller as a slave controller, wherein both the first motor controller and second motor controller are configured to receive a signal directly from a control system.
Dependencies are inferred from the claim text.