WO2001083991A1 - Micropompe electromagnetique - Google Patents

Micropompe electromagnetique Download PDF

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Publication number
WO2001083991A1
WO2001083991A1 PCT/JP2001/003601 JP0103601W WO0183991A1 WO 2001083991 A1 WO2001083991 A1 WO 2001083991A1 JP 0103601 W JP0103601 W JP 0103601W WO 0183991 A1 WO0183991 A1 WO 0183991A1
Authority
WO
WIPO (PCT)
Prior art keywords
diaphragm
permanent magnet
electromagnet
electromagnetic
distance
Prior art date
Application number
PCT/JP2001/003601
Other languages
English (en)
Japanese (ja)
Inventor
Mitsuhiro Kimijima
Original Assignee
Enomoto Micro Pump Mfg. 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 Enomoto Micro Pump Mfg. Co., Ltd. filed Critical Enomoto Micro Pump Mfg. Co., Ltd.
Publication of WO2001083991A1 publication Critical patent/WO2001083991A1/fr

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
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
    • F04B43/04—Pumps having electric drive
    • F04B43/043—Micropumps
    • 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

Definitions

  • the present invention relates to a small, low-capacity electromagnetic micropump that can be supplied in a scientific instrument and can supply a fluid medium in a constant state.
  • the size of the diaphragm is regulated by the relationship between the discharge amount of fluid discharged from the discharge port and the electromagnet for that purpose.
  • the size of the resonator element in which permanent magnets provided opposite to each other were also specified. For example, as shown in Fig. 7, the diaphragm was vibrated by lengthening the resonator element and increasing the amplitude width of the permanent magnet.
  • the distance between the permanent magnet and the electromagnet is not constant when the permanent magnet swings. Movement was not constant. As the distance between them increased, the suction and repulsion decreased by half.
  • An electromagnetic micropump according to the present invention has been conceived to solve the above-mentioned problems, and an object of the present invention is to provide a small-sized electromagnetic micropump capable of providing a stable suction and discharge amount. provide.
  • An object of the present invention is to provide a simple configuration without changing the size of a diaphragm.
  • An object of the present invention is to provide an electromagnetic microphone port pump capable of making a housing small and small. Disclosure of the invention
  • an electromagnetic micropump is characterized in that a diaphragm and a pump head are attached to a frame provided with a suction port and a discharge port in a housing, and the diaphragm and the pump head are used.
  • a valve element is arranged in the space formed, and on the other hand, a vibrating piece that swings rotatably is supported on the frame, and the vibrating piece is fixed to the center of the diaphragm.
  • an electromagnetic micropump in which a permanent magnet is arranged, an electromagnet is arranged to face the permanent magnet, and the diaphragm is operated by the vibration of the vibrating reed, the casing volume of the casing is 100 to 150 cm.
  • the generated flow rate from the discharge port is 1.5 to 4 liters per minute with no flow resistance outside the pump.
  • the maximum discharge pressure is 4 to 20 kPa, and the suction pressure is The minimum pressure of one is 4
  • the distance from the pivot portion of the diaphragm to the permanent magnet holding portion at the lower end is 10 to 55 mm, and the distance from the pivot portion to the fixing portion between the diaphragm and the diaphragm is 12 kPa. It is a configuration characterized by having a length of up to 35 mm.
  • the problem is that a configuration in which the distance between the permanent magnet surface and the electromagnet surface facing the electromagnet surface is in a range of 0.5 to 5 mm, and that the facing surface between the permanent magnet and the electromagnet is each arcuate, This can be achieved by a configuration in which the distance between the permanent magnet surface and the electromagnet surface is kept constant during the vibration of the permanent magnet.
  • the diaphragm is made of natural rubber, synthetic rubber and thermoplastic synthetic resin, the diameter of the portion contributing to vibration is 10 to 28 mm, and the thickness of the portion contributing to the movement is 0.5.
  • the above-mentioned problem can be achieved by a configuration of about 3 mm.
  • FIG. 1 is a central sectional view showing an embodiment of an electromagnetic microphone port pump according to the present invention.
  • FIG. 2 is an overall perspective view of the electromagnetic micropump of the present invention.
  • FIG. 3 is a front view showing the discharge side of the electromagnetic micropump of the present invention.
  • Fig. 4 shows the electromagnetic microphone opening of the present invention. It is a front view showing the internal mechanism in the state where the outer frame of the pump was removed.
  • FIG. 5 is a perspective view of the resonator element of the electromagnetic microphone port pump of the present invention.
  • FIG. 6 is a perspective view of the electromagnet portion of the electromagnetic micropump of the present invention.
  • FIG. 7 is a side view showing an internal mechanism of a conventional electromagnetic pump. BEST MODE FOR CARRYING OUT THE INVENTION
  • Electromagnetic micropump of the present invention at a maximum pressure 4 ⁇ 2 0 k P a which also occur in the pump and when the volume of the enclosure 1 0 0 ⁇ 1 5 0 cm 3 , the minimum pressure is one 4-1 20 kPa, which is comparable to conventional electromagnetic pumps.
  • the size of the vibrator element to which the diaphragm support is fixed is 55 mm or less, and the diaphragm support position is 35 mm or less from the shaft support of the vibrator element. can do.
  • the distance between the two can be kept constant even when the vibrating reed vibrates.
  • the permanent magnet is moved by a constant attractive force and repulsive force, causing the vibrating piece to vibrate with a stable force.
  • the position of the permanent magnet on the vibrating piece should be lower than that of conventional products.
  • the vibrating bar vibrates without the side edges of the electromagnet being in the way.
  • an outer casing 1 as a casing is formed in a U-shaped cross section, and a suction hole for inserting a suction joint 4 and a discharge joint 5 as joints of a pump head 3 to be installed is inserted into the inner frame 2 at a predetermined interval. It is drilled at a predetermined interval.
  • a diaphragm 6 is attached to the pump head 3, and a valve mechanism 7 for regulating the moving direction of the fluid is provided inside.
  • the valve mechanism 7 opens when the fluid is sucked into the space formed by the diaphragm 6 and the pump head 3 and closes when the fluid is discharged, and closes when the fluid is sucked and opens when the fluid is discharged. It consists of a valve.
  • the diaphragm 6 is formed of a flexible diaphragm made of natural rubber, synthetic rubber (for example, ethylene propylene diene rubber, black rubber, fluorine rubber), or synthetic resin. 0 to 28 mm, and the thickness of the portion is preferably about 0.5 to 3.0 mm. The hardness of this flexible material is 40 ° to 60 ° as described in the J ⁇ S standard K6253. It is.
  • the central part of the diaphragm 6 is supported by the resonator element 8.
  • the vibrating piece 8 is pivotally supported by a hanging rod 8 a so as to be rotatable by the mounting plate 4 on the ceiling plate 2 a of the inner frame 2.
  • a permanent magnet 11 that generates an attractive force and a reaction force with the electromagnet 10 when a current flows through the electromagnet 10 mounted on the bottom plate 9 of the inner frame 2 is provided.
  • the surface facing the electromagnet 10 is formed in an arc 11a.
  • the surface of the electromagnet 10 is also formed in an arc so that the distance between the permanent magnet 11 and the permanent magnet 11 is constant when the permanent magnet 11 is driven. The reciprocating motion of the permanent magnet 11 causes the vibrating piece 8 to vibrate and actuate the diaphragm 6.
  • the electromagnet 10 includes a core portion 10a and a bobbin portion 10b on which a covered electric wire is wound. An end face of the core portion 10a is formed in an arc and faces the permanent magnet 11. The permanent magnet 11 is attracted or repelled by the magnetic field generated by passing an alternating current through the coated electric wire to vibrate and vibrate the vibrating reed 8, and operate the valve mechanism 7 of the diaphragm 6 to operate the pump. The fluid in the head 3 is sucked and discharged from the discharge port through the discharge fiber 5.
  • the electromagnetic micropump of the present invention is configured as described above, even if the permanent magnet 11 reciprocates, the distance between the facing electromagnet 10 and the surface thereof is constant.
  • the fluid reciprocates with force, and the valve mechanism 7 of the diaphragm 6 operates stably, so that the fluid is discharged stably without fluctuation in the discharge amount.
  • the electromagnetic micropump according to the present invention is configured as described above, the amplitude of the permanent magnet is constant even when the length from the inner frame to the shaft support is reduced, and the distance between the permanent magnet and the electromagnetic stone is reduced. Even if it is narrow, the distance between them is always constant and a stable fluid flow rate can be obtained.
  • the height of the housing can be shortened to make the whole compact.
  • the effective diameter of the diaphragm is 10-28 mm
  • the height of the entire housing is about 70-80% of the conventional product
  • the volume is 50-60%.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Reciprocating Pumps (AREA)

Abstract

L'invention concerne une micropompe électromagnétique qui comprend une membrane (6) et une tête de pompage (3) montées sur un châssis comportant un tuyau d'entrée et un tuyau de sortie montés dans un coffret, un disque de soupape (7) monté dans un espace défini par la membrane et la tête de pompage, une pièce vibrante (8) oscillant par rotation, montée de façon à pouvoir pivoter sur le châssis fixé à la partie centrale de la membrane (6), un aimant permanent (11) placé à l'extrémité inférieure de la pièce vibrante (8), et un électroaimant (10) placé à l'opposé de l'aimant permanent (11). La capacité du coffret (1) est fixée à 100-150 cm3, le débit du tuyau de sortie est de 1,5-5 litres par minute, lorsqu'il n'y a aucune résistance à l'écoulement à l'extérieur de la pompe, la pression minimale d'aspiration est de -4 à -20 kPa, la partie de support pivotante de la pièce vibrante (8) se trouve à une distance de 12 à 55 mm de l'extrémité inférieure de la partie de support de l'aimant permanent, la partie de support pivotante se trouve à une distance de 12-35 mm de la partie de fixation de la pièce vibrante avec la membrane (6), et les surfaces opposées de l'aimant permanent et de l'électroaimant sont arquées, ladite membrane (6) étant actionnée par les vibrations de la pièce vibrante (8).
PCT/JP2001/003601 2000-04-27 2001-04-26 Micropompe electromagnetique WO2001083991A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2000-002805U 2000-04-27
JP2000002805U JP3072839U (ja) 2000-04-27 2000-04-27 電磁マイクロポンプ

Publications (1)

Publication Number Publication Date
WO2001083991A1 true WO2001083991A1 (fr) 2001-11-08

Family

ID=18531860

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2001/003601 WO2001083991A1 (fr) 2000-04-27 2001-04-26 Micropompe electromagnetique

Country Status (2)

Country Link
JP (1) JP3072839U (fr)
WO (1) WO2001083991A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105386966A (zh) * 2015-12-16 2016-03-09 武汉工程大学 微型隔膜泵

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114718858A (zh) * 2021-08-31 2022-07-08 上海飞科电器股份有限公司 冲牙器

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0255557A (ja) * 1988-08-17 1990-02-23 Fujitsu Ltd ヘッドアクセス用揺動モータ
JPH0617957A (ja) * 1991-11-26 1994-01-25 Ouken Seiko Kk 電磁弁
JPH1162836A (ja) * 1997-08-11 1999-03-05 American Standard Inc 耐摩耗性のダイアフラム及びその製造方法
GB2339336A (en) * 1998-06-16 2000-01-19 Huntleigh Technology Plc Magnetic Actuator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0255557A (ja) * 1988-08-17 1990-02-23 Fujitsu Ltd ヘッドアクセス用揺動モータ
JPH0617957A (ja) * 1991-11-26 1994-01-25 Ouken Seiko Kk 電磁弁
JPH1162836A (ja) * 1997-08-11 1999-03-05 American Standard Inc 耐摩耗性のダイアフラム及びその製造方法
GB2339336A (en) * 1998-06-16 2000-01-19 Huntleigh Technology Plc Magnetic Actuator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105386966A (zh) * 2015-12-16 2016-03-09 武汉工程大学 微型隔膜泵

Also Published As

Publication number Publication date
JP3072839U (ja) 2000-11-02

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