EP0061699A1 - Elektromagnetische Schwingkolbenpumpe - Google Patents

Elektromagnetische Schwingkolbenpumpe Download PDF

Info

Publication number
EP0061699A1
EP0061699A1 EP82102402A EP82102402A EP0061699A1 EP 0061699 A1 EP0061699 A1 EP 0061699A1 EP 82102402 A EP82102402 A EP 82102402A EP 82102402 A EP82102402 A EP 82102402A EP 0061699 A1 EP0061699 A1 EP 0061699A1
Authority
EP
European Patent Office
Prior art keywords
armature
solenoid
permanent magnet
intermediate portion
electromagnetic oscillation
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Withdrawn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
EP82102402A
Other languages
English (en)
French (fr)
Inventor
Yoshiaki Fujinaka
Masahito Miyazaki
Fukuzi Kuwabara
Yoshii Chiba
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.)
Iwaki Co Ltd
Original Assignee
Iwaki Co Ltd
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 Iwaki Co Ltd filed Critical Iwaki Co Ltd
Publication of EP0061699A1 publication Critical patent/EP0061699A1/de
Withdrawn legal-status Critical Current

Links

Images

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
    • 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
    • F04B17/046—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids the fluid flowing through the moving part of the motor

Definitions

  • the present invention relates to an electromagnetic oscillation pump comprising a pipe-like oscillating member provided with a pair of expansible portions and an intermediate portion interposed between these expansible portions, a valve arranged inside the intermediate portion, an armature fixed around the intermediate portion, and a solenoid, wherein the oscillating member with the armature fixed therearound is oscillated by the electromagnetic force of the solenoid in a direction along an axial line to pump a liquid therethrough.
  • the pump of this type has various problems because the above-mentioned spring is used. Namely, the oscillating member is oscillated at relatively high speed and the spring is therefore liable to be broken because of repeating stress, thus making it necessary to do the troublesome work of exchanging the broken spring with a new one every time when the spring is broken. Further, the spring must be attached and fixed reliably enough to the frame and oscillating member and if not, the attached or fixed ends of the spring will become loose and detached at the time of high speed oscillation. This makes the spring-attaching work very troublesome and asks considerable attention to be paid to the shape and design of the attaching ends of the spring. Therefore, the portions to which the spring is attached become complicated in construction and the assembly is very troublesome with many attaching parts needed.
  • the spring must have a certain length in the axial direction, thus preventing the whole of the pump from being small-sized.
  • the spring employed as a mechanical part is quickly corroded under this atmosphere.
  • the fixed portions of the spring can be easily coated to prevent its corrosion, but it is difficult to apply such coating process to the movable portion of the spring. This may be solved by using a spring made of anti-corrosion material, but its cost becomes high.
  • the present invention is therefore intended to eliminate the above-mentioned drawbacks and the object of the present invention is to provide an electromagnetic oscillation pump highly durable and reliable in operation, simple in construction, easy in assembly, small in size and low in cost.
  • the present invention employs not the mechanical coil or leaf spring but the drawing force of a permanent magnet.
  • the magnet is arranged in a manner to correspond to an armature on the oscillating member and after the armature is drawn and driven by the electromagnetic force of a solenoid, it is returned to its original position by the drawing force of the permanent magnet.
  • the pump of the present invention thus arranged can solve the above-mentioned problems caused when the mechanical return spring is used, and also can achieve excellent operation and effects which could not be attained by the conventional pumps.
  • Figs. 1 through 4 show a first embodiment of an electromagnetic oscillation pump according to the present invention, in which a pump 10 has an end member 12 provided with an inlet 11 and connected to an external pipe 15 shown by a two-dot and dash line in Fig. 1, and another end member 14 provided with an outlet 13 and connected to an external pipe 16 shown by a two-dot and dash line in Fig. 1.
  • Liquid such as water and medical liquid is fed from a tank (not shown) into the inlet 11 through the pipe 15 as shown by an arrow A and discharged through the outlet 13 into the pipe 16 in a direction shown by an arrow B to be used at an appropriate section (not shown).
  • the end members 12 and 14 are fixed by means of plural bolts 19 and 20 to their respective rectangular frames 17 and 18, respectively.
  • a casing 21 is sandwiched between these frames and fixed integral to the frame 18 by the bolts 20.
  • These end members 12, 14, frames 17, 18 and casing 21 form a pump framework.
  • End portions 23 and 24 of a pipe-like oscillating member 22 are fixed to the frames 17 and 18 of the pump framework, respectively. These fixation are achieved by pressing flanges of said end portions to the frames 17 and 18, respectively.
  • the end portions of said oscillating member 22 are communicated with the inlet 11 and outlet 13, respectively. Therefore, liquid to be fed through the pump flows through the oscillating member 22 along an axial line 25 shown by a dot and dash line in Fig. 1.
  • the oscillating member 22 has a pair of expansible portions 26 and 27 continuous from its end portions, and an intermediate portion 28 between these expansible portions.
  • the oscillating member 22 is made integral of a resilient material such as rubber.
  • the expansible portions 26 and 27 are formed in bellows shape in the case of this embodiment and the expanding and contracting movement of these expansible portions along the axial line 25 causes the intermediate portion 28 to be oscillated in the direction of axial line 25.
  • the oscillating member 22 is symmetrical on both sides of the center of said intermediate portion 28, which is positioned in the center of the pump or pump framework.
  • the pump framework is supported by a floating support plate 30, which is attached to the pump framework by means of screws 29 and suspended at both ends thereof by springs 32 from a fixed base plate 31. Therefore, the oscillation of the operating pump is absorbed by the springs 32 and not transmitted directly to the base plate 31.
  • a valve 33 made of same material as that of the intermediate portion 28 is arranged inside the intermediate portion 28 of said oscillating member and made integral to the intermediate portion 28 at its axial portion 33a, with its wing portion 33b usually press-contacted with the inner circumferential wall of the intermediate portion 28 to stop the flow of liquid.
  • the wing portion 33b is resiliently deformed as shown by a two-dot and dash line, allowing liquid to flow.
  • This valve 33 is moved integral to the intermediate portion 28 and will be hereinafter referred to as movable valve.
  • a sleeve- or cylinder-shaped armature 35 is fixed around the outer circumference of the intermediate portion 28 and along the whole length thereof.
  • the armature is therefore moved integral to the intermediate portion 28 and will be hereinafter referred to as movable armature.
  • a solenoid 36 is arranged concentric with the armature and in the center of the framework, enclosing the movable armature 35.
  • the solenoid 36 is connected through a line 37 to a commercially available external AC power supply (not shown), and a half-wave rectifier or diode 38 is arranged to another line. Since direct current half-wave-rectified is therefore supplied to the solenoid 36, the armature 35 is drawn along the axial line 25 only in one direction (or in the right or liquid-flowing direction in Fig. 1) when the solenoid is excited, thus enabling so-called electromagnetic drive of DC solenoid type to be achieved.
  • a valve 42 having same construction as that of the movable valve 33 is arranged inside the end member 14 positioned on the side of the outlet 13. This is a fixed valve not movable in the axial direction but cooperative with the movable valve 33 to define a pumping chamber therebetween and to forcedly feed liquid, thus enabling a pump of self-supply type to be formed.
  • a permanent magnet 43 is arranged in the framework along the axial line and adjacent to the solenoid 36.
  • This magnet 43 is ring- or cylinder-shaped as shown in Fig. 3 and arranged concentric with and around the movable armature 35.
  • the magnet 43 has a pair of left and right yokes 44 and 40 to converge its flux, and the yoke 40 is common to the solenoid 36. This is made possible by juxtaposing the magnet 43 with the solenoid 36 on one side thereof without any clearance interposed therebetween. However, it may be arranged as a variation that the permanent magnet 43 is separated a little from the solenoid 36 and has a pair of its exclusive yokes.
  • the permanent magnet 43 serves to return the armature 35 from its driven position to its original position shown in Fig. 1 after the armature is drawn and driven by the electromagnetic force of the solenoid 36.
  • the magnet 43 therefore makes it unnecessary to employ the conventional mechanical return spring.
  • the drawing force with which the armature 35 is drawn by the solenoid 36 is set to have a practical value about twice that of the permanent magnet, and the drawing force of the solenoid can be therefore obtained as desired even if the drawing force of the permanent magnet 43 usually acts on the armature 35.
  • the drawing and driving action of the solenoid 36 and the drawing and returning action of the permanent magnet 43 are alternately acted on the armature 35, thus enabling the armature 35 to be oscillated together with the intermediate portion 28 at high speed along the axial direction.
  • the movable valve 33 is also cooperated at the same time to pump liquid out of the pumping chamber defined between the movable and fixed valves 33 and 42.
  • Fig. 4 shows the directions in which the armature 35 is drawn by the solenoid 36 and permanent magnet 43 and the directions in which their lines 45 and 46 of magnetic force flow.
  • the line of magnetic force generated when the solenoid 36 is excited generates a strongest flux between both of yokes 39 and 40 but that leaking fluxes are generated as shown by two-dot and dash lines 47 between both of yokes 40 and 44 because the adjacent permanent magnet 43 and yoke 44 are magnetic materials and effect same action as that of the solenoid yokes.
  • the direction of the leaking fluxes is reverse to the direction in which the line 46 of magnetic force of the permanent magnet 43 is directed.
  • Fig. 4 is a sectional view but hatching in each of parts is omitted for the clarity of description.
  • a second embodiment of electromagnetic oscillation pump according to the present invention and shown in Fig. 5 is same in fundamental construction as the first one. Therefore, each of its parts is represented by a reference numeral expressed by adding one hundred to its corresponding original numeral and detailed description on these parts will be omitted.
  • a pipe-like oscillating member 122 has diaphragms which serve as a pair of expansible portions 126 and 127 and which are supported by a pump framework via end portions 123 and 124. Both of diaphragm-shaped expansible portions 126 and 127 allow the space to be made smaller in the axial direction as compared with the bellows-shaped expansible portions 26 and 27, and this is suitable for a pump whose length is shortened.
  • a movable valve 133 is arranged inside an intermediate portion 128 and to one side thereof.
  • a fixed valve 142 is arranged inside an end member 114 and opposite to the movable valve 133.
  • a sleeve-shaped movable armature 135 fixed around the intermediate portion corresponds to a solenoid 136 and a permanent magnet 143 arranged concentric with and around the armature 135.
  • the permanent magnet 143 uses its drawing force to return the armature 135, which has been drawn and driven by the solenoid, from its driven position to its original position shown in Fig. 5.
  • the conventional mechanical return spring is therefore made unnecessary.
  • Same thing as in the first embodiment can be said about the positional relation between the solenoid 136 and permanent magnet 143 and the action of their electromagnetic and magnetic forces.
  • any of embodiments according to the present invention allows the armature to be returned not by the conventional mechanical spring but by the drawing force of the permanent magnet. Since no member such as the spring which may break because of its fatigue when the oscillating member is oscillated at high speed is used, the durability and reliability of the pump can be enhanced. In addition, it is made unnecessary to design the complicated attaching portions of the spring and to do the troublesome work of attaching it. Further, the whole of the pump can be easily smaller-sized and the problem of corrosion can be solved substantially even if the pump is used under specific atmosphere because no spring is employed as movable mechanical part. As apparent from the above, the present invention can provide an electromagnetic oscillation pump capable of achieving various excellent effects.
  • the permanent magnet may not be connected or arranged adjacent to the solenoid and is not limited to those of ring-shaped or annular type.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electromagnetic Pumps, Or The Like (AREA)
  • Reciprocating Pumps (AREA)
EP82102402A 1981-03-28 1982-03-23 Elektromagnetische Schwingkolbenpumpe Withdrawn EP0061699A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP45780/81 1981-03-28
JP4578081A JPS57159971A (en) 1981-03-28 1981-03-28 Electromagnetic reciprocal pump

Publications (1)

Publication Number Publication Date
EP0061699A1 true EP0061699A1 (de) 1982-10-06

Family

ID=12728797

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82102402A Withdrawn EP0061699A1 (de) 1981-03-28 1982-03-23 Elektromagnetische Schwingkolbenpumpe

Country Status (2)

Country Link
EP (1) EP0061699A1 (de)
JP (1) JPS57159971A (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0110117A3 (de) * 1982-11-26 1984-09-26 Cordis Corporation Implantierbares Mikroinfusionspumpsystem
DE102017203464A1 (de) * 2017-03-02 2018-09-06 BSH Hausgeräte GmbH Schwingkolbenpumpe mit Ventilanordnung
DE102018003507B3 (de) 2018-04-28 2019-10-24 Thomas Magnete Gmbh Linearwirkendes Elektropumpenaggregat mit einem Balg und Verfahren zum Betrieb desselben
US11302468B2 (en) 2018-04-28 2022-04-12 Thomas Magnete Gmbh Electromagnet and method to produce the electromagnet
US12018672B2 (en) 2020-04-02 2024-06-25 Idex Health And Science Llc Precision volumetric pump with a bellows hermetic seal

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6157175U (de) * 1984-09-19 1986-04-17

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3136257A (en) * 1961-10-26 1964-06-09 Gorman Rupp Ind Inc Oscillating pump impeller
AT252736B (de) * 1963-11-29 1967-03-10 Elektro App Werke Veb Elektromagnetische Schwingkolbenpumpe
US3756750A (en) * 1971-07-20 1973-09-04 Mattel Inc Reciprocating valveless pump

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3136257A (en) * 1961-10-26 1964-06-09 Gorman Rupp Ind Inc Oscillating pump impeller
AT252736B (de) * 1963-11-29 1967-03-10 Elektro App Werke Veb Elektromagnetische Schwingkolbenpumpe
US3756750A (en) * 1971-07-20 1973-09-04 Mattel Inc Reciprocating valveless pump

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0110117A3 (de) * 1982-11-26 1984-09-26 Cordis Corporation Implantierbares Mikroinfusionspumpsystem
DE102017203464A1 (de) * 2017-03-02 2018-09-06 BSH Hausgeräte GmbH Schwingkolbenpumpe mit Ventilanordnung
DE102018003507B3 (de) 2018-04-28 2019-10-24 Thomas Magnete Gmbh Linearwirkendes Elektropumpenaggregat mit einem Balg und Verfahren zum Betrieb desselben
US11302468B2 (en) 2018-04-28 2022-04-12 Thomas Magnete Gmbh Electromagnet and method to produce the electromagnet
US11512682B2 (en) 2018-04-28 2022-11-29 Thomas Magnete Gmbh Linear-acting electric pump unit and method for operating said unit
US12018672B2 (en) 2020-04-02 2024-06-25 Idex Health And Science Llc Precision volumetric pump with a bellows hermetic seal

Also Published As

Publication number Publication date
JPS57159971A (en) 1982-10-02

Similar Documents

Publication Publication Date Title
US4585397A (en) Dual bellows pump with drive circuit through bellows
US6659740B2 (en) Vibrating membrane fluid circulator
US5231337A (en) Vibratory acoustic compressor
US11791702B2 (en) Electric motor with stator and mobile armature with suspending leaf springs which prevent movement in transverse direction and is in airgap plane that is perpendicular to first loop plane
JP2004056850A (ja) リニアアクチュエータ、それを用いたポンプ装置並びにコンプレッサー装置
US5474100A (en) Electricity/air pressure converter
EP0061699A1 (de) Elektromagnetische Schwingkolbenpumpe
EP0014817A1 (de) Elektromagnetische Fluidumpumpe
JP2004282987A (ja) 流体駆動装置、及び、熱輸送システム
US4370107A (en) Spring biased fluid pump
WO2007063729A1 (ja) スプライン一体型リニアモータ
KR102815851B1 (ko) 솔레노이드 펌프
CN218294450U (zh) 一种笼式超磁致伸缩比例阀
KR940000808Y1 (ko) 전자식 다이어프램 펌프용 마그네트 홀더
JPS58110871A (ja) 電磁駆動ポンプ
US3399624A (en) Circulation pumps
JP2019108828A (ja) 電磁振動型ダイヤフラムポンプ及び電磁振動型ダイヤフラムポンプシステム
US2948225A (en) Fluid pump
US2838007A (en) Agitating device
JP2009532011A (ja) 電磁変換装置
CN115111373B (zh) 一种应用于电推进的笼式超磁致伸缩比例阀
US10731464B2 (en) Linear actuator and method for operating such a linear actuator
JP3005780U (ja) 振動型ポンプ
JPH0472478A (ja) 振動型ポンプ
JPH0560059A (ja) ポンプ

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19820323

AK Designated contracting states

Designated state(s): DE FR GB IT

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19840410

RIN1 Information on inventor provided before grant (corrected)

Inventor name: MIYAZAKI, MASAHITO

Inventor name: FUJINAKA, YOSHIAKI

Inventor name: CHIBA, YOSHII

Inventor name: KUWABARA, FUKUZI