公开(公告)号：US11035368B2

公开(公告)日：2021-06-15

申请号：US15609764

申请日：2017-05-31

Applicant: FLUID HANDLING LLC.

Inventor： Andrew A. Cheng ,  Kyle D. Schoenheit

IPC: F04D15/00 ,  G05B19/416 ,  G05D7/06

Abstract: Apparatus for providing variable speed pump control in a hydronic pump system having a system flow and pressure requirement, featuring a signal processor or processing module configured to: receive signaling containing information about a system characteristic curve, a system flow and pressure requirement for the hydronic pump system, and real time changes by a pump operator to at least one control parameter to adjust the performance of the hydronic pump system; and determine corresponding signaling containing information about a design/redesign of at least one pump, system or control curve to adjust the performance of the hydronic pump system to correspond with the system flow and pressure requirement of the hydronic system, based upon the signaling received.

公开(公告)号：US11022985B2

公开(公告)日：2021-06-01

申请号：US14969723

申请日：2015-12-15

Applicant: Fluid Handling LLC.

Inventor： Andrew A. Cheng ,  James J. Gu

IPC: G05D7/00 ,  G01F25/00 ,  G01F1/36 ,  F04B53/10 ,  G01F15/00

Abstract: A discrete valve flow rate converter is provided to obtain a system flow through a valve in a dynamic hydronic pumping system, e.g., based on signaling containing information about the valve's differential pressure and the valve's hydronic characteristics calibration data. The discrete valve flow rate converter resolves the valve system flow rate directly and accurately with the valve's open position and the corresponding valve differential pressure signals associated therewith. The discrete valve flow rate converter may be applied to all kinds of valves as long as their open position and differential pressure associated with is available, e.g., including implementations for control valve applications, e.g., where the valve open position is controlled automatically and accurately, as well as implementations either for pumping system pressure controls with the flow rate known, such as adaptive hydronic system pressure controls, or as an alternative to sensorless pump monitoring and control.

公开(公告)号：US10895881B2

公开(公告)日：2021-01-19

申请号：US15927296

申请日：2018-03-21

Applicant: FLUID HANDLING LLC.

Inventor： Andrew A. Cheng ,  Matt Ruffo ,  Jordan Ruff

IPC: F04D15/00 ,  G05D7/06 ,  F04D15/02 ,  G01F23/18 ,  G05D9/12

Abstract: A pump controller has a signal processor that receives signaling about an instant water level AIL of a liquid in a container and generated by a water level transducer during an empty/fill application; and determines corresponding signaling to control a pump during the empty/fill application based upon the signaling received using a liquid level control algorithm that turns ON the pump when the instant water level AIL rises above a maximum empty water level during an empty application, or falls below a maximum fill water level during a fill application; turns OFF the pump when the instant water level AIL falls below a minimum empty water level for the empty application, or rises above a second maximum fill water level during the fill application; controls the pump when the instant water level AIL is in a liquid level region above the minimum empty water level and below a second maximum empty water level for the empty application, or falls below the second maximum fill water level and above a second minimum fill water level during the fill application based upon a respective desired adaptive pressure set point SP* being defined from a respective adaptive liquid level control curve with respect to the instant water level AIL.

公开(公告)号：US10670024B2

公开(公告)日：2020-06-02

申请号：US15173781

申请日：2016-06-06

Applicant: Fluid Handling LLC.

Inventor： Andrew A. Cheng ,  James J. Gu ,  Kyle D. Schoenheit

IPC: F04D15/00 ,  F04B49/06 ,  F04B1/34

Abstract: A pumping system having a pump includes a pump controller having a signal processor or processing module configured at least to: receive signaling containing information about pump differential pressure, flow rate and corresponding power data at motor maximum speed published by pump manufacturers, as well as instant motor power and speed; and determine corresponding signaling containing information about instant pump differential pressure and flow rate using a combined affinity equation and numerical interpolation algorithm to control the pump in the pumping system, based upon the signaling received.

公开(公告)号：US10119545B2

公开(公告)日：2018-11-06

申请号：US14091795

申请日：2013-11-27

Applicant: Fluid Handling LLC.

Inventor： Andrew A. Cheng ,  Graham A. Scott ,  James J. Gu

IPC: G05D7/06 ,  F04D15/00

Abstract: The present invention provides apparatus featuring a signal processor or processing module that may be configured at least to: receive signaling containing information about calibrated motor speed and power data for a hydronic pumping system; and determine system pumping flow rate and pressure associated with an equivalent hydronic system characteristic variable, based at least partly on the signaling received. The signal processor or processing module may be configured to provide corresponding signaling containing information about the system pumping flow rate and pressure determined. The corresponding signaling may contain information used to control the hydronic pumping system.