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US 2023/0152136 A1Published application
Determining fluid flow across rotary pump
AssigneeMedtronic, Inc.
InventorsKrishnaraja Nellikunje, Hemanth Kumar Jain, Thisanth Gunasekaran
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Abstract
Systems, devices, and methods are provided for measuring fluid flow across a pump used in a system for precisely and accurately metering fluid. The systems, devices, and methods can use contactless approaches to measure the properties of the fluid being pumped. The measured properties can be used to precisely and accurately determine the flow rate through the pump.
Claims21
A system for fluid flow, comprising:
- a rotary pump;
- an inflow line and an outflow line in fluid communication with the rotary pump;
- an inlet pressure sensor at the inflow line;
- an outlet pressure sensor at the outflow line;
- a current sensor measuring the current drawn by the rotary pump;
- and
- a circuit calculating fluid flow rate through the system based on a density value for a fluid pumping through the system, rotational speed of the rotary pump, inlet pressure at the inflow line, outlet pressure at the outflow line, and current drawn by the rotary pump.
4 more elements
A method for determining fluid flow across a rotary pump, comprising:
- calculating a fluid flow rate based on a rotational speed of the rotary pump, a pressure difference between a fluid intake and fluid discharge across the rotary pump, a determined density value for the fluid, and a measured current drawn by the rotary pump.
(canceled)
Dependencies are inferred from the claim text.