EP1828605B1 - Systeme de pompe/compresseur a impulsions magnetiques - Google Patents

Systeme de pompe/compresseur a impulsions magnetiques Download PDF

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Publication number
EP1828605B1
EP1828605B1 EP05853576A EP05853576A EP1828605B1 EP 1828605 B1 EP1828605 B1 EP 1828605B1 EP 05853576 A EP05853576 A EP 05853576A EP 05853576 A EP05853576 A EP 05853576A EP 1828605 B1 EP1828605 B1 EP 1828605B1
Authority
EP
European Patent Office
Prior art keywords
recited
pump system
passage
mandrel
elastic member
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.)
Expired - Fee Related
Application number
EP05853576A
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German (de)
English (en)
Other versions
EP1828605A1 (fr
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
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Filing date
Publication date
Application filed by Sullair LLC filed Critical Sullair LLC
Publication of EP1828605A1 publication Critical patent/EP1828605A1/fr
Application granted granted Critical
Publication of EP1828605B1 publication Critical patent/EP1828605B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/08—Machines, pumps, or pumping installations having flexible working members having tubular flexible members
    • F04B43/09—Pumps having electric drive
    • 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
    • F04B45/00—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
    • F04B45/06—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having tubular flexible members
    • F04B45/067—Pumps having electric drive

Definitions

  • the present invention relates to a flexible tube pump, and more particularly to a pump with a magnetically collapsible elastomeric member which collapses over a mandrel.
  • Reciprocating pumps 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 are favored because of their simplicity, low cost, and low maintenance requirements.
  • Another pump type is a flexible tube pump. Such pumps are often used for the transportation and pressurization of sensitive media or for applications in the vacuum field where the achievement of a "Clean" vacuum is relatively important.
  • Common forms of pumps with a flexible member are bellows and diaphragm pumps.
  • the diaphragm is typically an elastomer forming part of the volume being pumped.
  • the mechanism for actuating the flexible member may be by linkage to a motor or by valved compressed air.
  • actuators include a magnetically responsive elastic tube stretched onto, thereby sealing to, a shaft with inlet and outlet ports at or adjacent tube ends.
  • a magnetic field is generated within the enclosing body. This field is substantially concentric to the tube, which responds by expanding circumferentially towards the magnetic field. This creates a volume between the tube and shaft, the length of the tube outside the influence of the magnetic field remains sealed upon the shaft. Subsequent movement of the magnetic field along the axis of the pump gives transport to the volume and any media enclosed within from the inlet port to the outlet port, whereupon reduction of the magnetic field results in exhaustion of the volume. This cycle results in a pumping action.
  • a pump having the features of the preamble of claim 1 is disclosed in US-A-6050787 .
  • the magnetic pump system according to the present invention includes the features of claim 1.
  • a ring shaped electric magnet that when pulsed with high voltage and high current, causes an magnetically deflectable elastic member to collapse over a mandrel with an arcuate outer surface.
  • the volume between the arcuate outer surface and the inside of the elastic member is reduced causing compression and expulsion of the fluid therein through a one-way passage system.
  • the tube When the magnetic field subsides, the tube regains its shape drawing fluid in through the one-way passage system,
  • the present invention therefore provides an inexpensive flexible tube pump which provides increased pressures.
  • Figure 1 is a side view of a pump system according to the present invention
  • Figure 2 is a sectional side view of a pump system with the elastic member in an uncompressed state
  • Figure 3 is a top view of a pump system
  • Figure 4 is an expanded sectional side view of a manifold for a pump system according to the present invention.
  • Figure 5 is a schematic view of a magnetic field for use with the present invention.
  • Figure 6a is a schematic top view of a single bitter disc in which a multiple thereof forms a magnet for use with the present invention
  • Figure 6b is a schematic top view of a magnetic bitter disc showing contact which allows a multiple of stacked bitter discs to form a helical magnetic coil;
  • Figure 6c is a schematic top view of a bitter disc showing contact areas which allows a multiple of stacked bitter discs to form a helical magnetic coil;
  • Figure 6d is a schematic bottom view of a bitter disc showing a contact area which allow a multiple of stacked bitter discs to form a helical magnetic coil;
  • Figure 7 is a side view of a bitter disc stack between a pair of cooling fins
  • Figure 8 is a schematic of a control circuit for the pump system according to the present invention.
  • Figure 9 is a sectional side view of a pump system with the elastic member in a compressed state.
  • FIG. 1 illustrates a general perspective view of a pump assembly 10.
  • the pump assembly 10 generally includes a mandrel 12, a magnetically deflectable elastic member 14 mounted about said mandrel 12 and a ring magnet 16 about said deflectable elastic member 14. It should be understood that although the pump assembly 10 is described as a compressor for a gas, other uses such as that of a fluid pump will likewise benefit from the present invention.
  • the mandrel 12 defines a longitudinal axis A.
  • the mandrel 12 is a generally tubular member with an arcuate outer surface 17 defined about the axis A to form a generally hour-glass shape. More preferably, the outer surface 17 is parabolic.
  • a passage system 18 ( Figure 2 ) having an inlet port 20 and a discharge port 22 are defined within opposed manifolds 24, 26 attached adjacent to each longitudinal end of the mandrel 12.
  • the manifolds 24, 26 may be integral to the mandrel 12 or may be separate components, which are attached to the mandrel 12 with fasteners F ( Figure 3 ) or the like.
  • the passage system 18 communicates with a pumping volume V between the arcuate outer surface 1-7 defined between the arcuate outer surface 17 and the deflectable clastic member 14.
  • the passage system 18 includes a multiple of longitudinal passage 18a, 18b (two shown) which are radially located about the axis A. It should be understood that a multiple of passages are radially disposed about axis A even though only passages 18a, 18b are illustrated in the cross-section of Figure 2 .
  • a single central passage 18c located on axis A with passage branches 18d which extend off of axis A and communicate with the arcuate outer surface 17 are additionally provided to further increase fluid throughput. It should be understood that various passage paths may be used with the present invention.
  • Each passage 18a-18c of the passage system 18 includes a one-way check valve 28 such that fluid will only flow from inlet port 20 to the discharge port 22.
  • Each passage is essentially segmented into an input portion, which feeds into volume V, and a discharge portion which feeds from the volume V. The input and discharge portions need not be linearly aligned.
  • Each check valve 28 is preferably threaded into the inner diameter of the passages 18a-18c, however, other mounting arrangements may also be utilized.
  • the magnetically deflectable elastic member 14 is preferably a tubular rubber material impregnated with conductor or magnetic materials. Alternately, flexible electrically conductive strips such as copper plated spring steel strips or wires are mounted around the tube.
  • the deflectable elastic member 14 is mounted to the mandrel 12 adjacent each manifold 24, 26 through an annular clamp ring 30.
  • the clamp ring 30 includes a wedge shape 32 which corresponds to a mandrel wedge shape section 34 along each rim 36 thereof.
  • the clamp ring 30 is attached to the mandrel 12 though fasteners F (also illustrated in Figure 4 ) such as bolts. As the fasteners F are threaded into the clamp ring 30 the clamp ring 30 clamps the deflectable elastic member 14 to the mandrel wedge shape section 34.
  • the ring magnet 16 is preferably a ring magnet which generates a field that is parabolic in shape ( Figure 5 ) to correspond to the arcuate outer surface 17 of the mandrel 12.
  • the magnet may be manufactures as a winding of wire around a spool, however, magnets made of discs commonly known as bitter discs 38, are preferred.
  • the bitter discs 38 are stamped out of copper or aluminum of a thickness which depends on the current carrying capability and rigidity required.
  • An insulator is stamped out of a thin sheet of insulation, typically fiberglass. Several of these disc and insulator sections are interleaved to form a helix or coil by contact with the adjacent discs ( Figure 7 ).
  • a contact area C on one side of each bitter disc 38 provides contact with an interference area C 2 on the opposite side of the next bitter disc 38 ( Figure 6B ) therebetween while the insulator prevents the discs 38 from touching except at the interface I.
  • Each bitter disc 38 is rotated relative to the adjacent disc so that each contact area C on one side of a bitter disc 38 contacts the contact area C 2 on an opposite side of the adjacent bitter disc 38. That is, the contact areas C 1 , C 2 on a single bitter disc are radially displaced and on opposite sides of each bitter disc 38.
  • a continuous helical coil of bitter discs is formed. After the discs are stacked, they are clamped together with a multiple of tie bolts 40 or the like ( Figure 7 ).
  • a cooling fin 42 may also be located at each end of the bitter disc stack.
  • a power supply and control circuit 44 to drive the ring magnet 16 is schematically illustrated.
  • the AC power source is stepped up to a higher voltage by a transformer.
  • the AC switch connects the incoming power to a bridge rectifier.
  • the DC switch connects the capacitor to the ring magnet 16.
  • the switches may be SCR's, IGBT transistors and/or other semiconductor devices. Control logic controls the charging of the capacitor and the discharge of the capacitor into the ring magnet 16.
  • This control circuit 44 is preferably a single phase supply, however, a poly-phase supply may be used by replacing the transformer and bridge with a poly-phase transformer and bridge. Depending on the incoming voltage and desired DC voltage the transformer may not be required. For example, if the incoming power is 480VAC the DC voltage will be about 700V. If the switches are designed to handle these voltages no transformer would be required.
  • the control sequence of operation is generally as follows: 1) initially AC and DC switches are open; 2) the AC switch is closed and the capacitor charged for time T1; 3) the AC switch is opened; 4) the DC switch is closed discharging the capacitor into the ring magnet; and 5) the DC switch is opened for time T2.
  • Time T1 determines the capacitor charge. By varying this time the pressure that the pump 10 develops is controlled.
  • T2 determines the frequency of cycles. T2 is preferably a time which allows the deflectable elastic member 14 to regain shape. Higher frequency of operation may be obtained by pressurizing the inlet port 20 with a first stage pump or compressor. This will allow the deflectable elastic member 14 to regain shape faster after being collapsed. Alternatively, or in addition the magnet may be reversed to essentially pull the deflectable elastic member 14 back to the uncollapsed shape ( Figure 2 ).
  • the first stage pump or compressor may be of a much lower pressure than the pump system 10.
  • One magnet has been illustrated for simplicity of explanation, however, multiple magnets are preferably utilized to produce a greater flow velocity.
  • the magnets are fired in sequence from inlet port to discharge port.
  • the advantage is that as one magnet is firing the firing circuit of the others can be charging.
  • the deflectable elastic member may extend beyond the inlet and discharge such that if the deflectable elastic member is extended from the inlet to the source and from the discharge to the destination a totally lead free system is achieved.

Claims (14)

  1. Système de pompe (10) comprenant :
    un mandrin (12) avec une surface externe partiellement arquée (17) comportant un axe longitudinal (A) ; et
    un organe élastique pouvant être magnétiquement dévié (14) monté autour de ladite surface externe partiellement arquée (17) ; caractérisé en ce que ladite surface externe partiellement arquée (17) est arquée dans la direction longitudinale dudit mandrin (12).
  2. Système de pompe selon la revendication 1, dans lequel ladite surface externe partiellement arquée (17) est parabolique.
  3. Système de pompe selon la revendication 1 ou 2, dans lequel ledit organe élastique pouvant être magnétiquement dévié (14) comprend un organe tubulaire.
  4. Système de pompe selon l'une quelconque des revendications précédentes, comprenant en outre une bague de serrage (30) pour retenir ledit organe élastique pouvant être magnétiquement dévié (14) sur ledit mandrin (12).
  5. Système de pompe selon l'une quelconque des revendications précédentes, comprenant en outre un aimant annulaire (16) monté autour dudit organe élastique pouvant être magnétiquement dévié (14) pour replier sélectivement ledit organe élastique pouvant être magnétiquement dévié tubulaire (14) vers ladite surface externe partiellement arquée (17).
  6. Système de pompe selon la revendication 5, dans lequel ledit aimant annulaire (16) comprend de multiples disques de bitter (38).
  7. Système de pompe selon l'une quelconque des revendications précédentes, comprenant en outre un système de passage (18) formé dans ledit mandrin (12).
  8. Système de pompe selon la revendication 7, comprenant en outre un clapet anti-retour (28) situé dans chaque passage (18a... 18c) dudit système de passage (18).
  9. Système de pompe selon la revendication 7 ou 8, dans lequel ledit système de passage (18) est en communication avec un volume de pompage (V) situé entre ladite surface externe partiellement arquée (17) et ledit organe élastique pouvant être magnétiquement dévié (14).
  10. Système de pompe selon la revendication 9, comprenant une tubulure d'admission (24) et une tubulure de refoulement (26) en communication avec ledit système de passage (18), ladite tubulure d'admission (24) et ladite tubulure de refoulement (26) étant formées adjacentes à chaque extrémité dudit mandrin (12).
  11. Système de pompe selon la revendication 10, dans lequel le système de passage (18) comprend de multiples passages longitudinaux entre ladite tubulure d'admission (24) et ladite tubulure de refoulement (26).
  12. Système de pompe selon la revendication 10 ou 11, dans lequel ledit système de passage (18) comprend un passage (18c) le long d'un axe longitudinal défini par ledit mandrin (12), ledit passage (18c) comprenant une bifurcation de passage qui bifurque dudit axe pour communiquer avec ledit volume de pompage (V).
  13. Procédé d'actionnement d'un système de pompe magnétique comprenant les étapes consistant à :
    (1) exciter un aimant annulaire ; et
    (2) replier magnétiquement un organe élastique pouvant être magnétiquement dévié tubulaire (14) vers une surface externe partiellement arquée (17) d'un mandrin (12) ayant un axe longitudinal (A) pour communiquer un fluide d'un volume de pompage (V) à travers un refoulement, ladite surface externe partiellement arquée (17) étant arquée dans la direction longitudinale dudit mandrin (12).
  14. Procédé selon la revendication 13, comprenant en outre l'étape consistant à :
    communiquer le fluide à travers un système de passage à sens unique (18) qui communique avec et depuis le volume de pompage (V).
EP05853576A 2004-12-10 2005-12-09 Systeme de pompe/compresseur a impulsions magnetiques Expired - Fee Related EP1828605B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/009,802 US20060127247A1 (en) 2004-12-10 2004-12-10 Magnetic pulse pump/compressor system
PCT/US2005/044694 WO2006063267A1 (fr) 2004-12-10 2005-12-09 Systeme de pompe/compresseur a impulsions magnetiques

Publications (2)

Publication Number Publication Date
EP1828605A1 EP1828605A1 (fr) 2007-09-05
EP1828605B1 true EP1828605B1 (fr) 2010-02-24

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ID=36102664

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05853576A Expired - Fee Related EP1828605B1 (fr) 2004-12-10 2005-12-09 Systeme de pompe/compresseur a impulsions magnetiques

Country Status (10)

Country Link
US (1) US20060127247A1 (fr)
EP (1) EP1828605B1 (fr)
JP (1) JP4866859B2 (fr)
CN (1) CN101087957B (fr)
AU (1) AU2005313898B2 (fr)
BR (1) BRPI0518888A2 (fr)
CA (1) CA2591338C (fr)
DE (1) DE602005019619D1 (fr)
MX (1) MX2007006935A (fr)
WO (1) WO2006063267A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7748664B2 (en) * 2006-08-23 2010-07-06 Lockheed Martin Corporation High performance synthetic valve/pulsator
US7673877B2 (en) * 2006-10-31 2010-03-09 Terry Ruddell Pneumatic game
CA2566249C (fr) * 2006-10-31 2016-08-23 Terry Ruddell Jeu pneumatique
US7931572B1 (en) * 2009-12-04 2011-04-26 Kyler Ross Glauser Resistance exercise device
CN104005940A (zh) * 2013-02-27 2014-08-27 李军 一种无叶风扇
DE102013221744B4 (de) * 2013-10-25 2019-05-16 Eberspächer Climate Control Systems GmbH & Co. KG Pumpe, insbesondere zum Fördern von flüssigem Brennstoff für ein Fahrzeugheizgerät

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Also Published As

Publication number Publication date
US20060127247A1 (en) 2006-06-15
DE602005019619D1 (fr) 2010-04-08
CN101087957A (zh) 2007-12-12
CA2591338A1 (fr) 2006-06-15
JP2008523311A (ja) 2008-07-03
CA2591338C (fr) 2010-05-11
JP4866859B2 (ja) 2012-02-01
CN101087957B (zh) 2012-06-27
EP1828605A1 (fr) 2007-09-05
MX2007006935A (es) 2008-01-21
AU2005313898A1 (en) 2006-06-15
AU2005313898B2 (en) 2009-08-27
BRPI0518888A2 (pt) 2008-12-16
WO2006063267A1 (fr) 2006-06-15

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