EP0511124A1 - Schwingpumpe mit verbessertem Wirkungsgrad - Google Patents

Schwingpumpe mit verbessertem Wirkungsgrad Download PDF

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Publication number
EP0511124A1
EP0511124A1 EP92420114A EP92420114A EP0511124A1 EP 0511124 A1 EP0511124 A1 EP 0511124A1 EP 92420114 A EP92420114 A EP 92420114A EP 92420114 A EP92420114 A EP 92420114A EP 0511124 A1 EP0511124 A1 EP 0511124A1
Authority
EP
European Patent Office
Prior art keywords
pump
liquid
hydraulic accumulator
improved efficiency
vibrating
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Withdrawn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
EP92420114A
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English (en)
French (fr)
Inventor
Jean Claude Buffet
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.)
BorgWarner Transmission Systems Monaco SAM
Original Assignee
Eaton SAM
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 Eaton SAM filed Critical Eaton SAM
Publication of EP0511124A1 publication Critical patent/EP0511124A1/de
Withdrawn legal-status Critical Current

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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
    • F04B11/00—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
    • F04B11/0008—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using accumulators
    • F04B11/0033—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using accumulators with a mechanical spring

Definitions

  • the present invention relates to a vibrating pump for liquid, with improved hydraulic efficiency, usable in various applications such as: devices for cleaning carpets or rugs, filtered water dispensers, coffee machines, etc.
  • Vibrating pumps consist of an electromagnet attracting a movable magnetic core and at the same time compressing a return spring, at the rate of the frequency of the electric voltage applied to said electromagnet.
  • the mobile magnetic core comprises, at one of its ends, a piston or a membrane integral with said core and ensuring the pumping effect of the fluid, the piston or the membrane being movably mounted in a pumping chamber equipped with valves. suction and discharge necessary for operation.
  • the electromagnet is supplied, from an alternating current source, through a diode allowing only one alternation (half-period) out of two, for example only positive alternations, to the winding of this electro -magnet.
  • the winding thus receives, in particular, sinusoidal current pulses, other forms of pulses which can also be used.
  • the electrical energy supplied to the electromagnet during each "passing" alternation is therefore used for the attraction of the movable core, the corresponding displacement of the piston or of the membrane and the compression of the return spring; during this phase also occurs the suction or admission of the liquid into the pumping chamber, through the intake valve.
  • the following "non-passing" alternation makes the electromagnet without force and releases the return spring, which then pushes the movable core and the piston or the membrane in the other direction, thus expelling the liquid out of the chamber. pumping, through the discharge valve, to a user circuit.
  • the present invention aims to improve the vibrating pumps of the kind considered here, by proposing for these pumps a simple improvement allowing better use of the electric energy supplied, leading to a significant increase in hydraulic efficiency and in particular of the flow rate by reduction of the speed. flow and pressure losses in the operating circuit.
  • the vibrating pump for liquid with improved efficiency of the type comprising an electromagnet attracting a mobile magnetic core also subjected to the action of a return spring and linked to a membrane or to a piston movable in a pumping chamber arranged between a liquid inlet and a liquid outlet, the electromagnet having its coil electrically supplied periodically, so as to obtain alternating phases of suction and delivery of the liquid, is characterized in that the liquid outlet of this pump is connected to a hydraulic accumulator with elastic effect provided so as to restore towards the operating circuit, when the pump is in the suction phase, a quantity of liquid admitted into the hydraulic accumulator when the pump is in phase of discharge, so as to amplify the overall flow of the pump.
  • the hydraulic accumulator with elastic effect thus stores a non-negligible quantity of liquid under pressure, which otherwise would have been lost in pressure losses, this quantity of liquid being absorbed in a very short time due to the arrangement of the accumulator immediately in pump outlet, and said quantity of liquid also being restored in a very short time, thereby increasing the overall flow rate of the pump by increasing the flow time of the liquid downstream of the pump, the hydraulic accumulator thus having a flow amplifier function.
  • Tests carried out by the Applicant have shown that the increase in flow rate thus obtained can be of the order of 15% to 20%.
  • a "T" fitting is mounted on the liquid outlet of the pump, the operating circuit being connected to a branch of the "T” fitting, and the hydraulic accumulator elastic effect being connected to the opposite branch of this "T” fitting, which contributes to facilitating the expulsion of the accumulated liquid towards the use circuit which thus receives a flow greater than that of a conventional vibrating pump.
  • the hydraulic accumulator with elastic effect consists of a flexible and elastic tube connected at one end to the liquid outlet of the pump and closed at its other end. By its variation in volume allowed by its elasticity, this tube ensures the accumulation of energy in the form of liquid under pressure, and the rapid restitution thereof.
  • the hydraulic accumulator with elastic effect consists of a housing containing a membrane subjected to the thrust of a spring. and defining with the housing an accumulation chamber connected to the liquid outlet of the pump.
  • the hydraulic accumulator with elastic effect consists of a bellows subjected to the action of a spring, the internal volume of the bellows being in relation to the liquid outlet from the pump and constituting the accumulation chamber.
  • the pump comprises between its liquid outlet and the hydraulic accumulator with elastic effect, or on this hydraulic accumulator, maneuverable throttling means making it possible to vary the flow of liquid between at least two distinct values, by attenuation or neutralization of the amplification effect of the hydraulic accumulator.
  • said maneuverable throttling means are advantageously produced as a clamping device provided at an intermediate point of the length of the tube, which gives this embodiment of the hydraulic accumulator is of particular interest.
  • the clamping device may comprise a rotary cam secured to an operating means, located on one side of the flexible and elastic tube, and a support element disposed against the tube opposite the cam.
  • FIG. 1 shows a membrane vibrating pump, the body 1 of which delimits an internal pumping chamber 2, and is provided with a liquid inlet 3 and a liquid outlet 4.
  • a electromagnet 5 On the pump body 1 is mounted a electromagnet 5, which has a coil 6 and a movable magnetic core 7 movable along the axis 8 of the electromagnet 5.
  • the movable core 7 is pushed back towards the pumping chamber 2 by a return spring 9 working in compression.
  • the end of the movable core 7 opposite the spring 9 is integral with the central region of a deformable membrane 10, housed inside the pumping chamber 2 and having its periphery immobilized relative to the body 1.
  • the electromagnet 5 also includes at least one electrical supply terminal 11, connected to an electrical supply circuit 12 on which a diode 13 is inserted.
  • the circuit 12 is itself connected to an alternating current source, in particular sinusoidal, the diode 13 makes it possible to power the winding 6 only during alternation in two, to attract the movable core 7 by compressing the return spring 9.
  • this liquid outlet 4 is connected to the circuit of use by means of a hydraulic accumulator 16 with elastic effect, constituting a flow amplifier, a particular embodiment of which is illustrated in FIGS. 1 and 2.
  • a “T” connector 17 is mounted on the outlet of liquid 4 of the vibrating pump. On a branch of the "T" connector 17 is connected a conduit 18 leading to the use circuit. On the opposite branch of the "T” connector 17 is connected the accumulator proper, constituted by a flexible and elastic tube 19 of a certain length, closed at its free end by a plug 20.
  • the accumulator 16 thus stores a quantity of liquid which otherwise would have been lost in the form of pressure drops, said quantity of liquid being absorbed in a very short time taking into account the arrangement of this accumulator 16 immediately at the pump outlet.
  • FIG. 2 shows the flexible and elastic tube 19 of this accumulator 16 in the deformed and more particularly "swollen" state, when it has absorbed this quantity of liquid.
  • the accumulator 16 restores said quantity of liquid in the conduit 18 leading to use, the tube 19 "deflating" under the effect of its own elasticity; thus an additional quantity of liquid is injected into the operating circuit, this while the pump itself does not deliver any liquid.
  • the pump flow is therefore amplified, by increasing the liquid flow time in the hydraulic circuit located downstream of this pump, without increasing pressure losses.
  • FIGS 3 to 5 show alternative embodiments of the hydraulic accumulator 16, always connected to a "T" fitting 17 at the outlet of the vibrating pump, indicated very schematically at P in these figures.
  • the hydraulic accumulator 16 is constituted by a sealed housing 21 containing a membrane 22, subjected to the thrust of a spring 23 bearing against an internal wall of the housing 21.
  • the membrane 22 - spring 23 assembly provides the effect of the volume variation of the internal chamber 24 of the housing 21 which is in relation to the output of the pump P, an effect necessary for the hydraulic accumulator function.
  • the hydraulic accumulator 16 is constituted by a hollow elastomer body, making in one piece the equivalent of the elastic tube 19 closed by the plug 20 of the first embodiment.
  • the hydraulic accumulator 16 comprises, inside a housing 25, a bellows 26 subjected to the action of a spring 27 pressed against an internal wall of the housing 25.
  • the interior volume of the bellows 26 is related to the outlet of the pump P and constitutes an accumulation chamber.
  • FIG. 6 illustrates the application of the invention to a vibrating piston pump, with axial circulation of the liquid.
  • the mobile magnetic core 7 is therefore here integral with a piston 28, which extends it and enters a cylindrical pumping chamber 2.
  • the other parts of the pump corresponding by their structure or their function to those described above, are designated by the same reference numerals and will not be described again.
  • the liquid outlet 4 of this piston vibrating pump is connected as above, by means of a "T" fitting 17, on the one hand to a conduit 18 leading to use, and on the other hand to a flexible and elastic tube 19 constituting the basic element of a hydraulic accumulator 16 serving as a flow amplifier.
  • a means of gripping this tube 19 in the form of a rotary cam 29 secured to a lever or other operating means 30, a support element fixed 31 being disposed against the tube 19 opposite the cam 29.
  • the device thus provides an additional function of adjusting the flow rate of liquid supplied. For example, in the application of the invention to an apparatus for cleaning the carpet, it is thus possible to obtain a small flow and a large flow, depending on the nature of the cleaning to be carried out.
  • the hydraulic accumulator 16 is constituted by a section of flexible and elastic tube 19, which may have a length of 10 to 15 cm, one end of which is connected to the outlet of liquid 4 of the pump P, and the other end of which is connected to the start of the conduit 18 leading to use.
  • the operation is established as described above, the section of tube 19 "swelling" (see the line in phantom) during the delivery phases of the pump P, and "deflating", by injecting an additional flow of liquid into the conduit 18, during the suction phases.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
EP92420114A 1991-04-09 1992-04-08 Schwingpumpe mit verbessertem Wirkungsgrad Withdrawn EP0511124A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
MC2185 1991-04-09
MC912185A MC2269A1 (fr) 1991-04-09 1991-04-09 Amelioration du rendement hydraulique des pompes vibrantes

Publications (1)

Publication Number Publication Date
EP0511124A1 true EP0511124A1 (de) 1992-10-28

Family

ID=19738231

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92420114A Withdrawn EP0511124A1 (de) 1991-04-09 1992-04-08 Schwingpumpe mit verbessertem Wirkungsgrad

Country Status (2)

Country Link
EP (1) EP0511124A1 (de)
MC (1) MC2269A1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1305522A1 (de) * 2000-07-28 2003-05-02 Sarcos LC Resonanzpumpe
CN101592143B (zh) * 2008-05-29 2011-06-01 财团法人工业技术研究院 薄型电磁致动装置及其泵
DE102010009152A1 (de) 2010-02-24 2011-08-25 Saia-Burgess Dresden GmbH, 01257 Schwingankerpumpe
CN103591031A (zh) * 2013-11-19 2014-02-19 浙江奇峰泵业有限公司 一种振动式屏蔽电泵
EP2712601A1 (de) * 2012-09-26 2014-04-02 Obotics Inc. Fluidische Verfahren und Vorrichtungen
WO2020061758A1 (zh) * 2018-09-25 2020-04-02 深圳超磁机器人科技有限公司 瓶口分液器

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR934691A (fr) * 1946-10-08 1948-05-28 Perfectionnement aux systèmes d'alimentation en liquide sous pression
DE1528439A1 (de) * 1965-01-27 1970-08-13 Jacuzzi Bros Inc Ohne Luft arbeitendes Wasser-Druck-System
DE1653608A1 (de) * 1967-04-07 1971-07-01 Rau Swf Autozubehoer Einrichtung zur Foerderung von Fluessigkeiten
FR2203485A5 (de) * 1972-10-17 1974-05-10 Guinard Pompes
GB2181494A (en) * 1985-10-03 1987-04-23 Draegerwerk Ag Piston dosing pump for a fluid
DE8715311U1 (de) * 1987-11-19 1988-01-07 Grude GmbH Ingenieurbüro, 2000 Hamburg Straßenmarkiermaschine mit Verdrängerpumpen

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR934691A (fr) * 1946-10-08 1948-05-28 Perfectionnement aux systèmes d'alimentation en liquide sous pression
DE1528439A1 (de) * 1965-01-27 1970-08-13 Jacuzzi Bros Inc Ohne Luft arbeitendes Wasser-Druck-System
DE1653608A1 (de) * 1967-04-07 1971-07-01 Rau Swf Autozubehoer Einrichtung zur Foerderung von Fluessigkeiten
FR2203485A5 (de) * 1972-10-17 1974-05-10 Guinard Pompes
GB2181494A (en) * 1985-10-03 1987-04-23 Draegerwerk Ag Piston dosing pump for a fluid
DE8715311U1 (de) * 1987-11-19 1988-01-07 Grude GmbH Ingenieurbüro, 2000 Hamburg Straßenmarkiermaschine mit Verdrängerpumpen

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1305522A1 (de) * 2000-07-28 2003-05-02 Sarcos LC Resonanzpumpe
EP1305522A4 (de) * 2000-07-28 2004-08-11 Sarcos Lc Resonanzpumpe
EP1593847A2 (de) * 2000-07-28 2005-11-09 Sarcos LC Resonanz-Pumpe
EP1593847A3 (de) * 2000-07-28 2005-11-30 Sarcos LC Resonanz-Pumpe
CN101592143B (zh) * 2008-05-29 2011-06-01 财团法人工业技术研究院 薄型电磁致动装置及其泵
DE102010009152A1 (de) 2010-02-24 2011-08-25 Saia-Burgess Dresden GmbH, 01257 Schwingankerpumpe
AU2013323078B2 (en) * 2012-09-26 2017-05-18 Obotics Inc. Fluidic methods and devices
EP2712601A1 (de) * 2012-09-26 2014-04-02 Obotics Inc. Fluidische Verfahren und Vorrichtungen
US9498404B2 (en) 2012-09-26 2016-11-22 Obotics Inc. Fluidic methods and devices
AU2017213502B2 (en) * 2012-09-26 2018-12-06 Obotics Inc. Fluidic Methods and Devices
US10527030B2 (en) 2012-09-26 2020-01-07 Obotics Inc. Fluidic methods and devices
CN103591031A (zh) * 2013-11-19 2014-02-19 浙江奇峰泵业有限公司 一种振动式屏蔽电泵
WO2020061758A1 (zh) * 2018-09-25 2020-04-02 深圳超磁机器人科技有限公司 瓶口分液器

Also Published As

Publication number Publication date
MC2269A1 (fr) 1993-04-26

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