公开(公告)号：US10823176B2

公开(公告)日：2020-11-03

申请号：US16535773

申请日：2019-08-08

Applicant: FLUID HANDLING LLC

Inventor： James J. Gu ,  Andrew A. Cheng

IPC: F04B49/20 ,  F04D15/00 ,  F04D15/02

Abstract: Apparatus, including a pump system, features a controller having a signal processor or processing module configured to: receive signaling containing information about a relationship between frequencies of pump vibration resonances detected around critical pump speeds and a 3-dimensional pump vibration power spectrum in the frequency domain with respect to pump speed and pump temperature change differences; and determine corresponding signaling containing information to adjust the pump speed to avoid the pump vibration resonances around the critical pump speeds, based upon the signaling received. The signal processor or processing module is also configured to provide the corresponding signaling as control signaling to adjust the pump speed.

公开(公告)号：US10746189B2

公开(公告)日：2020-08-18

申请号：US15452068

申请日：2017-03-07

Applicant: FLUID HANDLING LLC.

Inventor： Paul J. Ruzicka ,  Christopher J. Felix ,  Marcos D. Roimicher

IPC: F04D29/056 ,  F04D1/06 ,  F04D29/051 ,  F04D29/041 ,  F04D17/12 ,  F04D17/16

Abstract: A multi-stage pump featuring different stages configured to pump a fluid from a pump suction and to a pump discharge; and a center bushing configured between the different stages, having a center bushing side configured with pockets to balance axial forces between the different stages of the multistage pump. The pockets are configured as curved rib pockets, extruded circle or circular pockets, or full length rib pockets.

公开(公告)号：US10662954B2

公开(公告)日：2020-05-26

申请号：US15604990

申请日：2017-05-25

Applicant: FLUID HANDLING LLC.

Inventor： Andrew A. Cheng ,  Kyle D. Schoenheit

IPC: F04B49/08 ,  F04D15/02 ,  F04B51/00 ,  G01F9/00 ,  F04B49/06 ,  F04B23/04 ,  F04D15/00 ,  G01F1/34

Abstract: Apparatus, including a pump system controller, features 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, for a system of pumps arranged in a multiple pump configuration; and determine corresponding signaling containing information about instant pump differential pressure and flow rate for the system of pumps arranged in the multiple pump configuration using a combined affinity equation and numerical interpolation algorithm, based upon the signaling received.

公开(公告)号：US10533570B2

公开(公告)日：2020-01-14

申请号：US15371878

申请日：2016-12-07

Applicant: Fluid Handling LLC

Inventor： Paul J. Ruzicka ,  Christopher J. Felix

IPC: F04D29/16 ,  F04D29/08 ,  F04D29/041 ,  F04D29/22 ,  B63H11/08 ,  F04D1/06 ,  F04D29/28

Abstract: An opposing impeller arrangement, for using in an opposed impeller pump, features a combination of a stage 1 impeller arrangement and a stage 2 impeller arrangement having opposing impellers and different impeller and wear ring arrangements. The stage 1 impeller arrangement may include a stage 1 impeller and a stage 1 wear ring, and be configured to receive an input fluid flow and a pump stage 1 fluid flow. The stage 2 impeller arrangement may include a stage 2 impeller and a stage 2 wear ring configured to receive the pump stage 1 fluid flow and provide a pump stage 2 fluid flow, and may also include a stage 2 wear ring undercut configured between the stage 2 impeller and the stage 2 wear ring to offset generated axial thrust in the opposing impeller pump, based upon the different impeller and wear ring arrangements.

公开(公告)号：US10429063B2

公开(公告)日：2019-10-01

申请号：US15417612

申请日：2017-01-27

Applicant: Fluid Handling LLC

Inventor： Pratik N. Shah ,  James J. Gu

IPC: F22B35/18

Abstract: A technique for determining a boiler water condition includes a boiler controller (aka PSE unit) having a signal processor that implements a boiler control algorithm to receive signaling containing information about sets of N consecutive probe data samples related to a boiler water condition; determine stable average signaling containing information about a stable average by averaging a set of N consecutive probe data samples in the signaling received; determine present stable average signaling containing information about a present stable average by averaging a present set of N consecutive probe data samples in the signaling received; and determine corresponding signaling containing information about the boiler water condition, based upon whether the present stable average is within an allowable limit and a comparison of the present and previous stable average signaling determined.

公开(公告)号：US10132305B2

公开(公告)日：2018-11-20

申请号：US14591240

申请日：2015-01-07

Applicant: Fluid Handling LLC.

Inventor： Pradipkumar B. Patel ,  James J. Gu

IPC: F04D1/00 ,  F04D13/12 ,  F04D15/00 ,  F04B49/20 ,  F04B49/06

Abstract: Apparatus features a signal processor or processing module configured to respond to signaling containing information about a set point and a speed related to one or more pumps in a pump system, e.g., including a variable speed multiple pump booster system, operating at a substantially constant discharge pressure; and determine an adjustment to the set point to compensate for system friction loss and maintain the substantially constant discharge pressure of the variable speed multiple pump booster system for flow variation, based at least partly on the signaling received. The signal processor or processing module 10a provides corresponding signaling containing information to control the one or more pumps in the variable speed multiple pump booster system.

公开(公告)号：US10048701B2

公开(公告)日：2018-08-14

申请号：US13717086

申请日：2012-12-17

Applicant: Fluid Handling LLC

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

IPC: G06F19/00 ,  G05D7/06 ,  F04D15/00

Abstract: Apparatus, such as a pump controller, features a signal processor configured at least to: receive signaling containing information about a linear set point control curve based at least partly on an adaptive set point control curve related to fluid being pumped by a pump in a pumping system, and determine a control set point based at least partly on the signaling received. The signal processor may be configured to provide a control signal containing information to control the pump based on the control set point determined.

公开(公告)号：US09938970B2

公开(公告)日：2018-04-10

申请号：US14680667

申请日：2015-04-07

Applicant: Fluid Handling LLC.

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

IPC: F04B51/00 ,  F04B17/03 ,  F04B49/06 ,  F04B49/10 ,  F04D15/00 ,  F15B19/00 ,  F16K37/00 ,  G01L5/00

CPC classification number: F04B51/00 ,  F04B17/03 ,  F04B49/065 ,  F04B49/103 ,  F04B49/106 ,  F04D15/0088 ,  F15B19/00 ,  F16K37/0075 ,  G01L5/0061

Abstract: The present invention provides apparatus, including a hydronic sensorless pumping system, that features a signal processor or processing module configured to receive signaling containing information about motor readout values of power and speed, and also about pump and system characteristics equations together with empirical power equations that are constructed by a polynomial best-fit function together with pump affinity laws based upon a pump curve published by a pump manufacturer; and determine corresponding signaling containing information about a pump or system pressure and a flow rate at the motor readout values of power and speed, based upon the signaling received.

公开(公告)号：US09714717B2

公开(公告)日：2017-07-25

申请号：US14452990

申请日：2014-08-06

Applicant: Fluid Handling LLC.

Inventor： Nimesh Pratapbhai Karia ,  Girish Subhash Mukkawar ,  Navalkishor Birdhilal Agrawal ,  Brijeshkumar Kantilal Meghpara

IPC: H01H3/16 ,  H01H3/18 ,  H01H15/14 ,  H01H17/12 ,  H01H19/18 ,  H01H21/28 ,  F16K25/00 ,  G01F23/56 ,  H01H35/40 ,  E03B7/00

CPC classification number: F16K25/005 ,  E03B7/00 ,  G01F23/56 ,  H01H35/40 ,  H01H2239/036

Abstract: A flow switch assembly features a two-part base assembly having lower and upper base parts. The lower base part is made from a metallic material, adapted on piping having a fluid flow, and configured with a central orifice to receive a paddle arm that pivots on an axis and responds to fluid flow in the piping. The upper base part is made from a non-metallic material, configured with a corresponding central orifice to receive the paddle arm, and configured with a channel to receive a pivot arm to mount and allow the paddle arm to pivot on the axis to actuate an ON/OFF switch in response to fluid flow. The non-metallic material has a lower coefficient of heat transfer than the metallic material to reduce condensation build-up in the flow switch assembly when the flow switch assembly is used in cold applications and exposed to temperatures below freezing.

公开(公告)号：US09611856B2

公开(公告)日：2017-04-04

申请号：US14187817

申请日：2014-02-24

Applicant: Fluid Handling LLC.

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

IPC: G05B19/00 ,  F04D15/00

CPC classification number: F04D15/0066 ,  F04D15/0088

Abstract: The present invention provides apparatus featuring a signal processor or processing module that may be configured at least to: process signaling containing information about an equilibrium point of pump differential pressure and system pressure formulated in a hydronic domain by utilizing pump and system characteristic curve equations so as to yield system pressure and flow rate at any particular load and time in a pump hydronic system, including using a multi-dimensional sensorless conversion technique; and determine equivalent hydronic system characteristics associated with the pump differential pressure and flow rate to their corresponding motor power and speed reconstructed and remapped by using a discrete numerical approach, based at least partly on the signaling received. The signal processor or processing module may provide corresponding signaling containing information about the system pumping flow rate and pressure determined.