WO2025184663A1 - A variable speed hydraulic pump system - Google Patents

A variable speed hydraulic pump system

Info

Publication number
WO2025184663A1
WO2025184663A1 PCT/US2025/018208 US2025018208W WO2025184663A1 WO 2025184663 A1 WO2025184663 A1 WO 2025184663A1 US 2025018208 W US2025018208 W US 2025018208W WO 2025184663 A1 WO2025184663 A1 WO 2025184663A1
Authority
WO
WIPO (PCT)
Prior art keywords
pump
gear pump
pressure
pressure piston
current
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/US2025/018208
Other languages
French (fr)
Inventor
Michael F. HAHN
Sebastian SCHLEITER
Eric P. Junkers
Thomas Heitmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hytorc Inc
Original Assignee
Hytorc Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hytorc Inc filed Critical Hytorc Inc
Publication of WO2025184663A1 publication Critical patent/WO2025184663A1/en
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B23/00—Pumping installations or systems
    • F04B23/04—Combinations of two or more pumps
    • F04B23/08—Combinations of two or more pumps the pumps being of different types
    • F04B23/10—Combinations of two or more pumps the pumps being of different types at least one pump being of the reciprocating positive-displacement type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/20—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by changing the driving speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
    • F04C11/005—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations of dissimilar working principle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/08—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the rotational speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/28—Safety arrangements; Monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/007—General arrangements of parts; Frames and supporting elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2203/00—Motor parameters
    • F04B2203/02—Motor parameters of rotating electric motors
    • F04B2203/0201—Current
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/18—Pressure
    • F04C2270/185—Controlled or regulated

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)

Abstract

A hydraulic pump system is disclosed, comprising a brushless direct current (BLDC) motor that drives both a gear pump and a high-pressure piston pump assembly via a common shaft. The gear pump generates pressurized oil up to a predetermined threshold pressure, at which point it is deactivated by a single cut-off valve, optimizing efficiency. The high-pressure piston pump assembly operates continuously, ensuring hydraulic pressure beyond the gear pump threshold. A closed-loop controller regulates the BLDC motor's current, maintaining maximum motor speed as long as the current remains below a predetermined threshold, independent of hydraulic pressure or flow demands. The system further integrates the gear pump and high-pressure piston pump assembly within a pump flange assembly, reducing interfaces and connection points to enhance reliability.

Description

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Claims

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PCT/US2025/018208 2024-03-01 2025-03-03 A variable speed hydraulic pump system Pending WO2025184663A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US202463560630P 2024-03-01 2024-03-01
US63/560,630 2024-03-01

Publications (1)

Publication Number Publication Date
WO2025184663A1 true WO2025184663A1 (en) 2025-09-04

Family

ID=96922019

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2025/018208 Pending WO2025184663A1 (en) 2024-03-01 2025-03-03 A variable speed hydraulic pump system

Country Status (1)

Country Link
WO (1) WO2025184663A1 (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030206805A1 (en) * 2000-04-14 2003-11-06 Bishop Michael B. Variable speed hydraulic pump
US20040151594A1 (en) * 2003-01-10 2004-08-05 Allington Robert W. High pressure reciprocating pump and control of the same
US20080131290A1 (en) * 2006-11-30 2008-06-05 Entegris, Inc. System and method for operation of a pump
US20140231318A1 (en) * 2005-12-05 2014-08-21 Entegris, Inc. Method and system for high viscosity pump
US20160369794A1 (en) * 2015-06-19 2016-12-22 Clarcor Engine Mobile Solutions, Llc Brushless DC Motor Control and Methods of Operating a Fuel Pump
WO2018207157A2 (en) * 2017-05-11 2018-11-15 Eaton Intelligent Power Limited Pressure control in a dead-headed hydraulic system using pump motion control
US20220008649A1 (en) * 2011-12-21 2022-01-13 Deka Products Limited Partnership Syringe pump, and related method and system

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030206805A1 (en) * 2000-04-14 2003-11-06 Bishop Michael B. Variable speed hydraulic pump
US20040151594A1 (en) * 2003-01-10 2004-08-05 Allington Robert W. High pressure reciprocating pump and control of the same
US20140231318A1 (en) * 2005-12-05 2014-08-21 Entegris, Inc. Method and system for high viscosity pump
US20080131290A1 (en) * 2006-11-30 2008-06-05 Entegris, Inc. System and method for operation of a pump
US20220008649A1 (en) * 2011-12-21 2022-01-13 Deka Products Limited Partnership Syringe pump, and related method and system
US20160369794A1 (en) * 2015-06-19 2016-12-22 Clarcor Engine Mobile Solutions, Llc Brushless DC Motor Control and Methods of Operating a Fuel Pump
WO2018207157A2 (en) * 2017-05-11 2018-11-15 Eaton Intelligent Power Limited Pressure control in a dead-headed hydraulic system using pump motion control

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