EP1834093A1 - Systeme de pompage en va-et-vient - Google Patents

Systeme de pompage en va-et-vient

Info

Publication number
EP1834093A1
EP1834093A1 EP05849304A EP05849304A EP1834093A1 EP 1834093 A1 EP1834093 A1 EP 1834093A1 EP 05849304 A EP05849304 A EP 05849304A EP 05849304 A EP05849304 A EP 05849304A EP 1834093 A1 EP1834093 A1 EP 1834093A1
Authority
EP
European Patent Office
Prior art keywords
check valve
cylinder
rotor
pump assembly
reciprocating pump
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.)
Withdrawn
Application number
EP05849304A
Other languages
German (de)
English (en)
Inventor
Richard W. Caddell
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.)
Hitachi Global Air Power US LLC
Original Assignee
Sullair LLC
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 Sullair LLC filed Critical Sullair LLC
Publication of EP1834093A1 publication Critical patent/EP1834093A1/fr
Withdrawn legal-status Critical Current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
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • F04B35/045—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric using solenoids
    • 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
    • F04B17/04—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids
    • F04B17/042—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids the solenoid motor being separated from the fluid flow
    • F04B17/044—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids the solenoid motor being separated from the fluid flow using solenoids directly actuating the piston
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
    • H02K41/02—Linear motors; Sectional motors
    • H02K41/025—Asynchronous motors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system

Definitions

  • the present invention relates to a pump, and more particularly to a linear electric motor driven reciprocating pump.
  • Reciprocating pumps/compressors are highly desirable for use in numerous applications, particularly in environments where liquid flow rate is relatively low and the required liquid pressure rise is relatively high. For applications requiring less pressure rise and greater flow rate, single stage centrifugal pumps may be favored because of their simplicity, low cost and low maintenance requirements. However, reciprocating pumps have a higher thermodynamic efficiency than centrifugal pumps by as much as 10% to 30%.
  • One conventional reciprocating pump utilizes a solenoid to drive a piston within a cylinder.
  • the solenoid When the solenoid is energized the solenoid plunger pushes air out of the discharge.
  • a solenoid spring drives the solenoid plunger in an opposite direction drawing air into an inlet.
  • a solenoid driven reciprocating pump provides the least force at the extremes of the solenoid plunger travel. The pull on the solenoid plunger increases by the inverse square of the distance between the center of the plunger and the center of the magnet such that the force across the length of travel is uneven.
  • a typical air compressor load increases almost linearly as the piston moves to compress the air.
  • the load is generally constant along the length of travel.
  • the force delivered by the solenoid plunger does not match the required load, which renders the solenoid pump relatively inefficient.
  • solenoids have relatively limited linear travel which further increases the inherent inefficiencies thereof.
  • a reciprocating pump assembly includes a linear electric motor having a cylinder, a rotor, and a stator.
  • a multiple of check valves are located near each end of the cylinder. Pairs of check valves are mounted within a T-shaped fitting which permit each fitting to operate alternatively as an inlet and a discharge depending on the direction of the rotor stroke.
  • Operation of the pump assembly utilizes the rotor as a piston within the cylinder.
  • one check valve within each fitting is open and one is closed to permit the opposed fittings to alternatively operate as the inlet and the discharge.
  • the check valves reverse and the fittings reverse operation.
  • the reciprocating pump assembly provides compression during each stroke of the rotor.
  • Another embodiment of the pump assembly utilizes the rotor to drive separate pistons through pushrods.
  • the check valves may be reed valves located directly within the piston cylinders to provide other packaging possibilities.
  • the present invention therefore provides a reciprocating air compressor which generally matches the required load to provide efficient operation.
  • Figure 1 is a general sectional view of a reciprocating pump assembly according to the present invention.
  • Figure 2A is a sectional view of a reciprocating pump assembly in a first position
  • Figure 2B is a sectional view of a reciprocating pump assembly in a second position
  • Figure 2C is a sectional view of a reciprocating pump assembly in a third position
  • Figure 2D is a sectional view of a reciprocating pump assembly in a fourth position
  • Figure 3 is a sectional view of another reciprocating pump assembly according to the present invention.
  • FIG. 1 illustrates a schematic sectional view of a reciprocating pump assembly 10.
  • the pump assembly 10 generally includes a linear electric motor 11 having a cylinder 12, a rotor 14, and a stator 16.
  • a first check valve 18, a second check valve 20, a third check valve 22 and fourth check valve 24 are located in pairs near each end of the cylinder 12. It should be understood that although the pump assembly 10 is described as a compressor for a gas, other uses such as compressor and pump uses for gases and/or fluids will likewise benefit from the present invention.
  • the cylinder 12 defines a longitudinal axis A.
  • the cylinder 12 is a tubular member which surrounds the rotor 14.
  • the cylinder 12 includes opposed endplates 26, 28 which may be selectively opened to receive the rotor 14. It should be understood that the cylinder need not be linear.
  • the rotor 14 is preferably an inductor rotor which includes an iron core 30 with alternating bands of copper 32 and iron 34 mounted about said iron core 30. It should be understood that other induction rotors with an inner core of ferrous material and an outer layer of conductive material may also be used with the present invention.
  • a seal 36 such as an O-ring is preferably located near each end of the rotor 14 to center and seal the rotor within the cylinder 12.
  • the seal 36 essentially provides a sliding bearing seal for the rotor 14. That is, due to the seals the rotor 14 operates as a piston within the cylinder 12.
  • Each endplate 26, 28 mounts a pair of check valves 18, 20 and 22, 24 within a T-shaped fitting 38, 40.
  • the check valves are each preferably mounted within the T-shaped fitting 38, 40 such that the check valves 18, 20 and 22, 24 permit each fitting 38, 40 to operate alternatively such that when one check valve is open 18, 22 the opposed check valves 20, 24 are closed.
  • the fittings 38, 40 alternate between operation as either an inlet or a discharge from the cylinder 12.
  • the fittings 38, 40 provide communication through a multiple of conduits C1-C4 to transfer a fluid medium from a source to a destination.
  • the stator 16 is mounted about the cylinder 12 to drive the rotor 14 in response to a controller 44.
  • the stator 16 includes a multiple of cooling fins 46 interspersed between a multiple of magnets 48.
  • the multiple of cooling fins 46 and the multiple of magnets 48 are axially retained with a tie-rod 49.
  • the magnets 48 are preferably electromagnetic stator windings such as wire wound into coils, however, other magnets may also be utilized by the present invention. Preferably, only three windings (one for each phase) need be used with the present invention.
  • the controller 44 may be a variable speed controller, a switched reluctance speed controller or other controller which controls a poly-phase power source 50.
  • the controller 44 reverses movement of the rotor 14 along the longitudinal axis A by interchanging two of the three phases as generally known.
  • Known chip sets and transistor modules are available to provide an induction variable speed drive controller 44 and need not be fully described herein.
  • operation of the pump assembly 10 begins with the rotor 14 being driven toward one endplate 26 as indicated by arrow Xl.
  • the rotor 14 operates as a piston within the cylinder 12.
  • the check valve 18 located within the T-shaped fitting 38 is open and the check valve 20 within the T-shaped fitting 38 is closed such that fitting 38 operates as a discharge and fitting 40 operates as an inlet. Fluid within the cylinder 12 forward of the rotor 14 discharges through check valve 18.
  • the rotor 14 is driven toward the endplate 28 as indicated by arrow X2.
  • the check valve 18 located within the T-shaped fitting 38 is closed and the check valve 20 within the T-shaped fitting 38 is open such that the fitting 38 operates as an inlet and fitting 40 operates as a discharge.
  • the rotor 14 moves away from endplate 26 such that the check valve 24 located within the T-shaped fitting 40 is closed and the check valve 22 within the T-shaped fitting 40 is open such that air is drawn in behind the rotor 14 (relative to arrow X2).
  • the T- shaped fitting 40 now operates as discharge.
  • the pump assembly 10 thereby operates to compress fluid as the rotor 14 moves in both directions improving the efficiency thereof.
  • the pump assembly 10 thereby cycles between fittings 38, 40 to provide intake/discharge on each stroke of the rotor 14.
  • the controller 44 preferably controls the cycle time of the rotor 14 to provide a desired output.
  • another pump assembly 52 includes a linear electric motor 54 which drives a first and a second piston 56, 58 within a respective piston cylinder 60, 62.
  • the pistons 56, 58 are respectively linked to a rotor 64 of the linear electric motor 54 through pushrods 66, 68.
  • the rotor 64 and pistons 56, 58 are separate which provides different packaging possibilities.
  • Pairs of check valves 70, 72 and 74, 76 are located within the respective piston cylinders 60, 62.
  • the check valves 70-76 are preferably reed valves, however other one-way valves may also be used with this embodiment.
  • a stator 78 is mounted about the rotor 64 to drive the rotor 64 and connected pistons 56, 58 in response to a controller 80.
  • the check valves 70-76 operate generally as described above to provide pumping and compression during each cycle of the rotor 64.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Reciprocating Pumps (AREA)
  • Compressor (AREA)

Abstract

L'invention concerne un ensemble de pompage en va-et-vient comprenant un moteur électrique linéaire présentant un cylindre, un rotor et un stator. Une pluralité de clapets de non retour sont situés à côté de chaque extrémité du cylindre. Des paires de clapets de non retour sont montés à l'intérieur d'un appareillage en forme de T, ce qui permet à chaque appareillage de fonctionner alternativement comme une entrée ou une évacuation en fonction du sens de la course du rotor. Un autre ensemble de pompe utilise le rotor pour commander séparément les pistons de commande à travers les tiges poussoirs.
EP05849304A 2004-12-13 2005-12-12 Systeme de pompage en va-et-vient Withdrawn EP1834093A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/010,858 US20060127252A1 (en) 2004-12-13 2004-12-13 Reciprocating pump system
PCT/US2005/044844 WO2006065718A1 (fr) 2004-12-13 2005-12-12 Systeme de pompage en va-et-vient

Publications (1)

Publication Number Publication Date
EP1834093A1 true EP1834093A1 (fr) 2007-09-19

Family

ID=36096106

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05849304A Withdrawn EP1834093A1 (fr) 2004-12-13 2005-12-12 Systeme de pompage en va-et-vient

Country Status (9)

Country Link
US (1) US20060127252A1 (fr)
EP (1) EP1834093A1 (fr)
JP (1) JP2008523312A (fr)
CN (1) CN101084373A (fr)
AU (1) AU2005316683A1 (fr)
BR (1) BRPI0518988A2 (fr)
CA (1) CA2591345A1 (fr)
MX (1) MX2007006985A (fr)
WO (1) WO2006065718A1 (fr)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1783368A1 (fr) * 2005-11-07 2007-05-09 Dresser Wayne Aktiebolag Pompe de récupération de vapeur
ES2363712T3 (es) * 2006-12-19 2011-08-12 Dresser Wayne Aktiebolag Bomba para fluidos y surtidor de combustible.
US20080264625A1 (en) * 2007-04-26 2008-10-30 Brian Ochoa Linear electric motor for an oilfield pump
CN101939540B (zh) 2007-12-10 2013-10-23 梅德拉股份有限公司 连续的流体输送系统和方法
EP2322799B1 (fr) * 2008-08-07 2014-04-23 LG Electronics Inc. Compresseur linéaire
AU2012204244A1 (en) * 2011-01-07 2013-05-09 Xcor Aerospace Inc. High-speed check valve suitable for cryogens and high reverse pressure
JP6331066B2 (ja) * 2013-09-26 2018-05-30 シグマテクノロジー有限会社 磁気コイルポンプ及び該磁気コイルポンプを用いた冷却システム
PL3567251T3 (pl) 2014-02-07 2021-07-19 Graco Minnesota Inc. Układ napędowy do bezpulsacyjnej pompy wyporowej
WO2015135070A1 (fr) * 2014-03-11 2015-09-17 Obotics Inc. Procedes et dispositifs associes a des dispositifs hydrauliques de consommation courante
KR20240064764A (ko) 2015-01-09 2024-05-13 바이엘 헬쓰케어 엘엘씨 다회 사용 1회용 세트를 갖는 다중 유체 전달 시스템 및 그 특징부
CN105332890A (zh) * 2015-11-19 2016-02-17 沈阳工业大学 圆筒型磁悬浮永磁直线压缩机
CN108475978B (zh) * 2016-01-29 2021-04-06 Abb瑞士股份有限公司 模块化管状线性开关磁阻机器
US11022106B2 (en) 2018-01-09 2021-06-01 Graco Minnesota Inc. High-pressure positive displacement plunger pump
CN108527865B (zh) * 2018-03-08 2021-06-04 杨锐 一种具有平台清理功能的安全型3d打印设备
CN109611313A (zh) * 2018-10-10 2019-04-12 广东工业大学 一种磁力驱动往复式制冷压缩机
BE1026881B1 (nl) * 2018-12-18 2020-07-22 Atlas Copco Airpower Nv Zuigercompressor
CN110878742B (zh) * 2019-12-26 2021-11-12 徐红鹰 一种基于压力能的动力系统
AU2021246059A1 (en) 2020-03-31 2022-10-06 Graco Minnesota Inc. Electrically operated displacement pump
CN112682290B (zh) * 2020-12-28 2022-12-20 广东虹勤通讯技术有限公司 一种空气循环装置及终端

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GB1519953A (en) * 1974-06-26 1978-08-02 Nat Res Dev Linear induction actuators

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See also references of WO2006065718A1 *

Also Published As

Publication number Publication date
AU2005316683A1 (en) 2006-06-22
CN101084373A (zh) 2007-12-05
JP2008523312A (ja) 2008-07-03
US20060127252A1 (en) 2006-06-15
WO2006065718A1 (fr) 2006-06-22
BRPI0518988A2 (pt) 2008-12-16
CA2591345A1 (fr) 2006-06-22
MX2007006985A (es) 2007-10-04

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