WO2004076862A1 - Pompe a membrane electromagnetique - Google Patents

Pompe a membrane electromagnetique Download PDF

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Publication number
WO2004076862A1
WO2004076862A1 PCT/JP2003/017012 JP0317012W WO2004076862A1 WO 2004076862 A1 WO2004076862 A1 WO 2004076862A1 JP 0317012 W JP0317012 W JP 0317012W WO 2004076862 A1 WO2004076862 A1 WO 2004076862A1
Authority
WO
WIPO (PCT)
Prior art keywords
diaphragm
frame body
permanent magnet
electromagnetic
coil
Prior art date
Application number
PCT/JP2003/017012
Other languages
English (en)
Japanese (ja)
Inventor
Masashi Okubo
Fumihiro Yaguchi
Hiroaki Usui
Original Assignee
Shinano Kenshi Kabushiki Kaisha
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
Priority claimed from JP2003050496A external-priority patent/JP2004060641A/ja
Application filed by Shinano Kenshi Kabushiki Kaisha filed Critical Shinano Kenshi Kabushiki Kaisha
Priority to AU2003292652A priority Critical patent/AU2003292652A1/en
Publication of WO2004076862A1 publication Critical patent/WO2004076862A1/fr

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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
    • F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
    • F04B43/04—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
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/0009—Special features
    • F04B43/0054—Special features particularities of the flexible members
    • 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
    • F04B45/04—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms
    • F04B45/047—Pumps having electric drive

Definitions

  • the present invention relates to an electromagnetic type which can be suitably used for a fuel cell, a notebook computer, a medical device and the like.
  • a diaphragm pump is a device that changes the volume of a diaphragm chamber by reciprocatingly driving the diaphragm, thereby enabling the suction and discharge of a fluid such as air.
  • a general diaphragm pump mechanically reciprocates the diaphragm to change the volume of the diaphragm chamber.
  • FIG. 24 shows a conventional example (JP-A-2001-50165) in which an electromagnetic force is used as a driving force for driving a diaphragm.
  • 10a and 10b are pump chambers arranged opposite to each other, and each of the pump chambers 10a and 10b is partitioned into two diaphragm chambers by a diaphragm 12 having a 3 ⁇ 4fe.
  • Reference numeral 14 denotes a permanent magnet fixed to a central portion in the plane of each of the diaphragms 12, and 16 denotes an electromagnet arranged in the middle of the pump chambers 10a and 10b.
  • the electromagnet 16 changes the polarity of both ends of the magnet alternately between N pole and S pole by applying AC power to the coil, so that the electromagnet 16 and the permanent magnet 14 fixed to the diaphragm 12 are alternated.
  • the magnetic force generated in the step causes the diaphragms 12 to repel or suck each other.
  • Each diaphragm chamber partitioned by the diaphragm 12 is provided with an intake valve 18 and an exhaust valve 19, and when the diaphragms 12 and 12 are driven, air is sucked into the diaphragm chamber and exhausted. To provide the required pump action.
  • pumps that absorb and discharge air and other fluids are used in a wide variety of applications, but pumps used to supply air and fuel to fuel cells and cool notebook computers are thin. It must be small and lightweight. However, conventional pumps are not fully satisfactory in terms of miniaturization.
  • the above-mentioned electromagnetic diaphragm pump also has a configuration in which an electromagnet is simply disposed outside the pump chamber, and does not effectively reduce the size.
  • pumps used for fuel cells and medical equipment are required to be able to supply air, fuel, blood, etc. in a clean state.
  • the present invention has been made to solve these problems, and it is possible to suitably reduce the size and thickness of a pump using a diaphragm, and to suitably use such a device as a fuel cell or a notebook computer. It is an object of the present invention to provide an electromagnetic diaphragm pump capable of supplying air, fuel, and the like in a clean state. Disclosure of the invention
  • the present invention has the following configuration to achieve the above object.
  • the electromagnetic diaphragm pump according to the present invention includes a diaphragm having a first frame body and a second frame body, the outer peripheral edge of which is sandwiched between the first frame body and the second frame body.
  • a diaphragm chamber is provided between the diaphragm and the first frame body, a suction valve and a delivery valve are provided in communication with the diaphragm chamber, and a permanent magnet is mounted on an outer surface of the diaphragm.
  • An electromagnetic force generating means for acting on the permanent magnet is provided on the first frame body opposite to the permanent magnet with the diaphragm chamber interposed therebetween.
  • a diaphragm is attached to a frame body having a first frame body and a second frame body by sandwiching an outer peripheral portion between the first frame body and the second frame body.
  • a diaphragm chamber is provided between the diaphragm and the first frame body, a suction valve and a delivery valve are provided in communication with the diaphragm chamber, and a permanent magnet is attached to an outer surface of the diaphragm.
  • the second frame body which is on the same side as the permanent magnet with respect to the diaphragm chamber, is provided with means for generating an electromagnetic force acting on the permanent magnet.
  • the electromagnetic diaphragm pump comprises a first frame body and a second frame body.
  • a diaphragm chamber is provided between the diaphragm and the first frame body by attaching a diaphragm to a frame body having a frame body by sandwiching an outer peripheral edge between the first frame body and the second frame body,
  • a suction valve and a delivery valve are provided in communication with the diaphragm chamber, a permanent magnet is attached to the first frame body, and the diaphragm opposite to the permanent magnet across the diaphragm chamber is provided.
  • a means for generating an electromagnetic force acting on the permanent magnet is provided on an outer surface of the ram.
  • the diaphragm is attached to the frame body having the first frame body and the second frame body by sandwiching the outer peripheral portion between the first frame body and the second frame body.
  • a diaphragm chamber is provided between the diaphragm and the first frame body, a suction valve and a delivery valve are provided in communication with the diaphragm chamber, and a permanent magnet is provided on the second frame body.
  • a means for generating an electromagnetic force acting on the permanent magnet is provided on an outer surface of the diaphragm so as to face the permanent magnet.
  • an air-core energizing coil or an energizing coil having an air-core iron core can be used as the means for generating the electromagnetic force.
  • One of a suction valve and a delivery valve can be mounted in a region inside the winding of the current-carrying coil. This makes it possible to reduce the thickness of the pump and simplify the configuration of the suction / discharge channel.
  • a space between the diaphragm and the second frame body is communicated with the atmosphere.
  • the assembly of the electromagnetic diaphragm pump is facilitated, the frame body can be formed thin, and a required space for allowing the diaphragm to move within the frame body can be secured.
  • a support plate for supporting the diaphragm in a flat shape is fixed to an outer surface of the diaphragm, and a permanent magnet is arranged in an opening provided in the support plate.
  • a stopper projection is provided on an outer surface of the diaphragm, the stopper projection being in contact with an inner surface of a frame body of the main body when the diaphragm is driven, and the stopper projection is formed integrally with the diaphragm.
  • a control board on which a drive circuit for controlling energization of the energizing coil is mounted is housed in the main body.
  • a position detecting element for detecting a moving position of the diaphragm is provided, and the diaphragm is driven and controlled based on a detection signal of the position detecting element, so that the diaphragm can be accurately driven.
  • the permanent magnet is one permanent magnet, and is magnetized concentrically and alternately in opposite directions from a central area toward one or a plurality of ring-shaped outer peripheral areas, and the conductive coil is It is characterized by one or a plurality of concentric current-carrying coils passing between adjacent areas of the permanent magnet.
  • the permanent magnet includes a first magnet arranged at the center, and one or a plurality of ring-shaped second magnets arranged around the first magnet, and these magnets are arranged at the center side.
  • the magnets are alternately magnetized in opposite directions from the outer magnet to the outer magnet, and the energizing coil is one or a plurality of concentric energizing coils passing between adjacent magnets of the permanent magnet.
  • the permanent magnet is formed in a disk shape
  • the energizing coil is formed in a coil passing near the outer peripheral portion of the disk-shaped permanent magnet
  • the back yoke is formed from the outer peripheral portion of the permanent magnet. It is characterized in that it is formed in a size protruding outward. In this case, it is preferable to bend the outer peripheral portion of the back yoke in a direction approaching the outer peripheral portion of the current-carrying coil.
  • the permanent magnet is formed in a ring shape
  • the back yoke is provided so as to cover the ring-shaped permanent magnet
  • the energizing coil is formed in a coil passing near the inner peripheral portion of the permanent magnet. It is characterized by having. In this case, it is preferable that the central portion of the back yoke is bent in a direction approaching the inner peripheral portion of the power coil.
  • the permanent magnet is formed in a ring shape
  • the back yoke covers the ring-shaped permanent magnet, and is formed to have a size protruding from an outer peripheral portion of the permanent magnet
  • the conductive coil is formed of the permanent magnet. It has a coil passing near the outer periphery and a coil passing near the inner periphery of the permanent magnet.
  • the inner peripheral side of the energizing coil is provided on the surface of the permanent magnet on the diaphragm side.
  • a yoke that passes therethrough is provided.
  • FIG. 1 is a cross-sectional view (an upper position of a diaphragm) showing an internal configuration of an electromagnetic diaphragm pump according to the present invention
  • FIG. 2 is a cross-sectional view (a lower portion of the diaphragm) showing an internal configuration of an electromagnetic diaphragm pump according to the present invention
  • FIG. 3 is a top view of the electromagnetic diaphragm pump with the second frame body removed
  • FIG. 4 is a bottom view of the electromagnetic diaphragm pump
  • FIG. 5 is an electromagnetic diaphragm pump.
  • FIG. 6 is a cross-sectional view illustrating a configuration of an exhaust portion of the diaphragm pump.
  • FIG. 6 is a block diagram illustrating an example of a drive circuit for driving the electromagnetic diaphragm pump according to the embodiment.
  • FIG. FIG. 8 is a block diagram showing still another example of the drive circuit
  • FIG. 9 is an explanatory diagram showing an example in which permanent magnets are magnetized in a concentric ring shape.
  • 1 0 is
  • Fig. 11 is an explanatory view showing an example in which a permanent magnet is magnetized in a concentric ring shape and a plurality of energizing coils are arranged concentrically.
  • Fig. 11 shows an example in which the permanent magnet is formed in a concentric ring shape.
  • FIG. 12 is an explanatory view showing an example in which the outer peripheral portion of the back yoke is projected outward from the permanent magnet.
  • FIG. 13 is a diagram showing the projected outer peripheral portion of the back yoke in the direction of the conducting coil.
  • FIG. 14 is an explanatory diagram showing an example in which a permanent magnet is formed in a ring shape, and an energizing coil is passed near the inner peripheral portion of the permanent magnet.
  • FIG. 5 is an explanatory view showing an example in which the center part of the back yoke is bent in a direction approaching the energizing coil in FIG. 14, and
  • FIG. 16 is a diagram in which a permanent magnet is formed in a ring shape and the energizing coil is formed.
  • Fig. 17 is an explanatory diagram showing an example in which two concentrically arranged permanent magnets are shown.
  • FIG. 14 is an explanatory diagram showing an example in which a permanent magnet is formed in a ring shape, and an energizing coil is passed near the inner peripheral portion of the permanent magnet.
  • FIG. 5 is an explanatory view showing an example in which the center part of
  • FIG. 18 is an explanatory view showing an example in which a yoke is attached to the ram side surface.
  • FIG. 18 is a partial cross-sectional view showing an example in which the cross-sectional shape of the ring-shaped portion is formed in an arc shape.
  • FIG. 20 is a partial cross-sectional view showing an example in which the cross-sectional shape of a portion is a combination of a plurality of straight lines, and FIG.
  • FIG. 20 is a partial cross-sectional view showing an example in which the cross-sectional shape of a ring-shaped portion is a combination of an arc and a straight line;
  • 21 is an explanatory view of an embodiment in which an energizing coil is attached to a diaphragm and a permanent magnet is attached to a first frame body, respectively.
  • FIG. 23 is an explanatory view of the embodiment attached to the body, and FIG. 23 shows the embodiment of FIG.
  • FIG. 24 is an explanatory view showing an embodiment in which a yoke is also attached to the diaphragm side of the permanent magnet.
  • FIG. 24 is an explanatory view showing a conventional example of an electromagnetic diaphragm pump.
  • FIG. 1 and 2 are cross-sectional views showing the configuration of an embodiment of an electromagnetic diaphragm pump according to the present invention.
  • FIG. 1 shows a state in which the diaphragm 20 is in an upper position (intake state), and FIG. Indicates the state at the lower position (exhaust state).
  • the electromagnetic diaphragm pump of the present embodiment has a storage space for movably storing the diaphragm 20 in a main body (frame body) 22 composed of a first frame body 22 a and a second frame body 22 b. And is assembled. That is, concave portions 23 a and 23 b for accommodating the diaphragm 20 are provided on the opposing surfaces of the first frame body 22 a and the second frame body 22 b, respectively.
  • the main body 22 is movably supported in the thickness direction of the main body 22 in the space formed by the concave portions 23a and 23b.
  • Reference numeral 20a denotes a clamp provided with a predetermined width along the outer peripheral edge of the diaphragm 20.
  • FIG. 3 is a plan view showing a state where the diaphragm 20 is set on the first frame body 22a.
  • the diaphragm 20 is a member formed in a circular shape, and the clamp portion 20a is provided over the entire outer peripheral edge of the diaphragm 20. That is, the diaphragm 20 extends along the entire periphery of the outer peripheral edge along the opening edges of the recesses 23a, 23b of the first frame body 22a and the second frame body 22b. Is pressed and supported by the first frame body 22a and the second frame body 22b.
  • Reference numeral 24 denotes a fixing screw that presses and fixes the first frame body 22a and the second frame body 22b while the diaphragm 20 is pressed.
  • the diaphragm 20 and a first frame body 22 a arranged opposite to the diaphragm 20 constitute a diaphragm chamber 26, and the first frame body 22 a is a fixed wall
  • the diaphragm 20 corresponds to a movable wall.
  • Reference numeral 25 denotes an intake hole provided at the center of the first frame body 22a
  • reference numeral 27 denotes a connection between the intake hole 25 and the diaphragm chamber 26.
  • the intake valve 27 opens the intake port 25 when outside air flows into the diaphragm chamber 26 from the intake port 25, and conversely, the intake port 25 when air flows out of the diaphragm chamber 26 to the outside. Acts to block the flow of air by blocking 25.
  • the second frame body 22b is provided with an opening 28 at the center, and air is allowed to flow through the opening 28 inside and outside the second frame body 22b.
  • the diaphragm 20 reciprocates in the thickness direction of the main body (frame body) 22 with the outer peripheral edge portion clamped by the first frame body 22 a and the second frame body 22 b. And is made of a material having a certain elasticity and durability such as rubber. Of course, the material of the diaphragm 20 is not particularly limited as long as it has the required flexibility and durability.
  • a permanent magnet 30 is attached to the outer surface of the diaphragm 20 outside the diaphragm chamber 26.
  • the permanent magnet 30 formed in a rectangular flat plate shape is used, but a permanent magnet having an appropriate shape such as a circle can be used.
  • the permanent magnet 30 is fixed to the center of the diaphragm 20.
  • the permanent magnet 30 is magnetized in the thickness direction, and the polarity of the N-S pole may be either.
  • the permanent magnet 30 is fixedly mounted in an opening provided at the center of the support plate 32.
  • the support plate 32 has a ring-shaped portion (movable portion) 2 Ob of a predetermined width between the clamp portion (outer peripheral edge) 20 a of the diaphragm 20 (inside the outer peripheral edge) and the diaphragm 2. 0 is provided so as to cover the outer surface.
  • the support plate 32 functions to support the diaphragm 20 so that the diaphragm 20 is driven in parallel with the thickness direction of the main body 22 while maintaining a flat surface.
  • the diaphragm 20 is deformed and pushed only by the ring-shaped portion 20b sandwiched between the support plate 32 and the clamp portion 20a.
  • the entire shape of the diaphragm 20 is not deformed, and only the ring-shaped portion 20b along the clamp portion 20a of the diaphragm 20 is deformed. 0 has improved durability and longer life can be achieved.
  • the ring-shaped portion 20b is formed to be slightly thinner than other portions of the diaphragm 20 to improve the response of the diaphragm 20, and when the diaphragm 20 moves to the lower position.
  • the inner space (taper surface) of the concave portion 23a provided in the first frame body 22a is slightly separated from the inner surface (taper surface) to form a flow space.
  • the cross-sectional shape of the ring-shaped portion 2 Ob is shown in a curve such as an arc as shown in FIG. 18, a combination of a plurality of straight lines having different angles as shown in FIG. 19, or as shown in FIG. Thus, it is good to constitute by the shape of the combination of a curve and a straight line.
  • the ring-shaped portion 20 b shown in FIG. 19 is a straight line that is inclined and connected to the straight portion 2 O bi and the straight portion 20 bl that extend straight from the clamp portion 20 a as it is. Department
  • the ring-shaped portion 20b shown in FIG. 20 is composed of an arc portion 20b4 connected to the clamp portion 20a and a straight portion 20b5 connected to the arc portion 20b4. Consist of combinations. That is, the ring-shaped portion 2 Ob is composed of a clamp portion (fixed portion) 20 a and a support plate.
  • FIGS. 18, 19 and 20 show the diaphragm 2 when not driven.
  • the ring-shaped portion 20b having a slack cross-sectional shape is formed in this manner, when the diaphragm 20 is driven in a reciprocating manner, the anti-power generated inside the ring-shaped portion 20b itself.
  • the diaphragm 20 can be driven by a relatively small force, and the pump can be downsized. Alternatively, pump efficiency can be increased.
  • the electromagnetic force between the energizing coil 40 and the permanent magnet 30 may be slightly reduced.
  • the cross-sectional shape of the ring-shaped portion 20b is useful because the diaphragm 20 can be driven with a relatively small force as described above.
  • the support plate 32 is provided with a through hole 32a in a predetermined arrangement, and a stopper formed integrally with the diaphragm 20 on the outer surface of the diaphragm 20 in the through hole 32a.
  • the projection 20c fits.
  • the stopper projection 20c is provided to buffer the impact of the diaphragm 20 when the diaphragm 20 collides with the inner surface of the second frame body 22b, as shown in FIG.
  • the support plate 32 is provided such that the end surface protrudes from the outer surface.
  • the stopper projections 20 c are provided at four locations at equal intervals in the circumferential direction as shown in FIG. 3, but the number of the stopper projections 20 c can be appropriately selected. .
  • reference numeral 34 denotes a back yoke provided on the back of the permanent magnet.
  • the backhoe 34 is provided so that a magnetic field acts efficiently on the permanent magnet, and is made of a magnetic material such as iron.
  • the back yoke 34 is formed in a flat plate shape having the same shape as the permanent magnet 30, and the back yoke 34 is attached so as to overlap the permanent magnet 30.
  • reference numeral 40 denotes an energizing coil (electromagnetic force generating means) attached to the outer surface of the first frame body 22a. The energizing coil 40 drives the diaphragm 20 by applying a magnetic force to the permanent magnet 30.
  • the energizing coil 40 is provided so as to wind around the intake valve 27 arranged at the center of the first frame body 22a.
  • the current-carrying coil 40 is attached to the first frame body 22a so as to face the diaphragm 20.
  • the energizing coil 40 is preferably formed flat so that the thickness of the winding wire is as small as possible so that it can be accommodated in the first frame body 22a.
  • FIG. 4 shows a state where the first frame body 22a is viewed from the lower surface side.
  • An intake hole 25 is opened at the center of the first frame body 22 a, and an energizing coil 40 is arranged around the intake valve 27.
  • an air-core energizing coil 40 is used as a means for generating an electromagnetic force for applying an electromagnetic force to the permanent magnet 30.
  • the electromagnetic force generating means is not necessarily applied to the air-core energizing coil 40. It is not limited. Even a current-carrying coil having an iron core can be arranged in the same manner as in the present embodiment by using an air-core iron core.
  • the intake valve 27 is arranged at the center in the winding area of the energizing coil 40.
  • the position where the intake valve 27 is arranged is not limited to the winding area of the energizing coil 40. The position can be appropriately selected with one frame body 22a.
  • control board 36 is a control board attached to the lower surface of the first frame body 22a.
  • the control substrate 36 is attached to one half of the lower surface of the first frame body 22a except for the area where the energizing coil 40 is arranged.
  • the control board 36 is provided with a drive circuit for controlling the time, polarity, and the like for energizing the energizing coil 40, whereby the electromagnetic diaphragm pump is appropriately mounted on a product as a modularized unit. It becomes possible.
  • the control board 36 is also housed within the thickness of the first frame body 22a, so that all necessary modules for driving the diaphragm pump are housed in the body 22. An extremely compact electromagnetic diaphragm pump is housed.
  • 38 denotes an exhaust pipe extending from the first frame body 22a. Inside the first frame body 22a, a flow path 38a for communicating the exhaust pipe 38 with the diaphragm chamber 26 is provided.
  • FIG. 5 shows the flow channel 38a provided inside the first frame body 2.2a.
  • the end of the channel 38a opens in a taper surface provided on the peripheral edge of the recess 23a formed in the first frame body 22a.
  • the flow path 38a communicates with the diaphragm chamber 26, and the communication between the diaphragm chamber 26 and the flow path 38a also occurs when the diaphragm 20 moves to the lower position. Will be maintained.
  • An exhaust valve 39 is attached midway between the trachea 38 and the channel 38a.
  • the exhaust valve 39 is opened when air flows out of the diaphragm chamber 26 to the outside, and conversely, shuts off the air flow when air flows into the diaphragm chamber 26 from the exhaust pipe 38.
  • FIG. 1 shows a state in which the diaphragm 20 is in the upper position and the air is sucked into the diaphragm chamber 26. That is, when a current in a direction that repels the permanent magnet 30 is applied to the energizing coil 40, the permanent magnet 30 repels due to the magnetic force, and the diaphragm 20 starts moving toward the second frame body 22b. I do.
  • This operation is an intake operation.
  • the exhaust valve 39 is closed, the intake valve 27 is opened, and outside air starts to flow into the diaphragm chamber 26.
  • the diaphragm 20 moves until it comes into contact with the inner surface of the second frame body 22b, and the outside air is introduced into the diaphragm chamber 26.
  • the diaphragm 20 stops when the end surface of the stopper one protrusion 20c abuts on the inner surface of the second frame body 22b.
  • the operation of the diaphragm 20 is controlled by a drive circuit mounted on the control board 36, and in consideration of the moving stroke amount of the diaphragm 20, the diaphragm 20 is actually operated at a high speed and the second frame body.
  • the electromagnetic diaphragm pump according to the present embodiment is controlled so that the stopper projection 20c is brought into contact with the inner surface of the second frame body 22b. By doing so, the generation of noise is prevented. Since the stopper projection 20c is formed integrally with the flexible diaphragm 20 such as rubber, noise when the stopper projection 20c contacts the second frame body 22b is reduced. In addition, it is also possible to attach another member having a high cushioning property to the stopper projection 20c in order to reduce noise.
  • FIG. 2 shows a state in which the diaphragm 20 moves in a direction approaching the first frame body 22a, and the diaphragm 20 finally comes into contact with the inner surface of the first frame body 22a.
  • the diaphragm 20 comes into contact with the first frame body 22a, the problem of noise is avoided because the diaphragm 20 itself comes into contact with the first frame body 22a. Since the diaphragm 20 is supported flat by the electromagnetic attraction of the energizing coil 40 and the support plate 32, the air introduced into the diaphragm chamber 26 efficiently passes through the flow path 38a. And is discharged from the exhaust pipe 38.
  • the diaphragm 20 is completely in contact with the inner surface of the first frame body 22 a.
  • the air introduced into the diaphragm chamber 26 can be almost completely discharged.
  • the permanent magnet 30 attached to the diaphragm 20 and the energizing coil 40 Is the point at which the magnetic force becomes the closest and the magnetic force becomes the strongest, and the arrangement is the most efficient as the air discharging operation of the diaphragm chamber 26.
  • the operation is switched to the intake operation by reversing the direction of current supply to the current supply coil 40 again.
  • the energization of the energizing coil 40 in this way, it is possible to continuously perform the intake and exhaust operations by the diaphragm 20.
  • the drive of the diaphragm 20 is controlled by appropriately controlling the current, frequency, and the like, which flow through the current-carrying coil.
  • FIG. 6 shows examples of drive circuits for driving the electromagnetic diaphragm pump.
  • the drive circuit 50 shown in FIG. 6 inputs a drive command signal and a current cutoff signal to the control circuit 52, and when the drive command signal is input, energizes the energizing coil 40 to drive the diaphragm 20.
  • the diaphragm 20 is configured to automatically return to one position of the intake or exhaust, and when the energizing coil 40 is energized, the electromagnetic force acts on the permanent magnet 30 to cause the other to return to the other position. It is controlled to move to the position.
  • a return spring to the diaphragm 20 or the like, the diaphragm 20 can be automatically returned to the negative position.
  • the drive circuit 50 shown in FIG. 7 energizes the energizing coil 40 in the forward and reverse directions according to the drive command signal and the current cutoff command signal input to the control circuit 52, and This is an example in which a suction force and a repulsion force are alternately generated between the two to drive. It is possible to control the energizing coil 40 by applying an alternating current or a pulse current.
  • the drive circuit 50 shown in FIG. 8 detects the moving position of the diaphragm 20 by the diaphragm position detecting element 54 when driving the diaphragm 20 by electromagnetic force by energizing the energizing coil 40.
  • This is an example of driving control of the diaphragm 20.
  • a position detecting element 54 of the diaphragm 20 a reflective optical sensor 56a is provided on the first frame body 22a, and the inner surface of the diaphragm 20 facing the reflective optical sensor 56a.
  • a light reflecting coating 56b is provided on the rim is shown.
  • the first frame body 22a is made of a transparent material.
  • FIG. 2 shows that a magnetic detection sensor 157a is provided on the first frame body 22a as a diaphragm position detecting element 54, and the outer surface of the diaphragm 20 is opposed to the magnetic detection sensor 57a. This is an example in which the position detecting magnet 57b is mounted.
  • the position of the diaphragm 20 is constantly detected by the position detecting element 54, and the current and frequency of the current-carrying coil 40 are determined based on the detection signal of the position detecting element 54.
  • the operation of the diaphragm 20 can be accurately controlled. For example, the impact force when the diaphragm 20 collides with the inner surface of the first frame body 22a or the second frame body 22b is reduced, the generation of noise is suppressed, and the diaphragm 20 has a long service life. Then, the control can be performed.
  • the current detection element 58 monitors the current flowing through the current-carrying coil 40 so that when the movement of the diaphragm 20 is deviated from the drive command signal, the current supplied from the drive circuit to the current-carrying coil 40 It is used to adjust the value and correct the deviation accurately. Responsiveness and high-accuracy control are possible because of current control.
  • the electromagnetic diaphragm pump according to the present embodiment has the diaphragm 20 housed in the main body (frame body) 22 composed of the first frame body 22a and the second frame body 22b.
  • a diaphragm chamber 26 is formed to perform an intake / exhaust operation using electromagnetic force. As shown in Figs.
  • the structure of the main part of the diaphragm pump is extremely simple, and it is characterized in that it is thin and extremely compact.
  • the diaphragm 20 is designed to occupy a large movable area (volume) in the thin main body 22, the entire apparatus is formed in a compact form, and efficient suction is achieved. It has a feature that it is configured to perform an exhaust action.
  • the first frame body 22a and the second frame body 22b constituting the main body 22 are not limited to non-magnetic metal as long as they have a predetermined strength, and may be formed of resin or the like. Of course it is possible. Since the electromagnetic diaphragm pump of the present embodiment has a configuration in which the current-carrying coil 40 is directly attached to the first frame body 22a, the heat generated from the current-carrying coil 40 is generated by the first frame body 22. a and the second frame It is efficiently transmitted to body 22b. Therefore, by forming the first frame body 22a and the second frame body 22b with a material having good heat conduction, the air (fluid) introduced into the diaphragm chamber 26 is heated. Can be discharged.
  • the electromagnetic diaphragm pump of the present embodiment can be formed extremely small, it can be used for various purposes such as cooling of a notebook computer, a device for supplying air or fuel of a fuel cell, and medical equipment.
  • a fuel cell has the advantage that the reaction of the cell can be promoted by supplying warm air.
  • the pump when used for medical equipment, it is possible to use the pump as an easy-to-use pump by heating and supplying the fluid.
  • the permanent magnet 30 is attached to the outer surface of the diaphragm 20 which is the outer portion of the diaphragm chamber 26, so that the permanent magnet 30 is provided inside the diaphragm chamber 26.
  • dust and gas generated from permanent magnets, fasteners, adhesives, and the like are likely to poison catalysts used in fuel cells and contain metal ions that cause deterioration of fuel cell functions. Therefore, an electromagnetic diaphragm pump in which the permanent magnet 30 is not provided in the diaphragm chamber 26 can be suitably used for a fuel cell.
  • the air intake and exhaust are described as an example.
  • the electromagnetic diaphragm pump according to the present invention is used not only for gas such as air but also for supply and discharge of fluid such as liquid. be able to.
  • the configuration is such that air is taken in from the front of the first frame body 22 a and exhausted from the side face of the main body 22 (the side face of the first frame body 22 a or the side face of the diaphragm chamber 26).
  • the frame body can be formed to be flatter and thinner.
  • FIGS. 9 to 17 show other embodiments of the mutual arrangement, size, shape, and the like of the permanent magnet 30, the non-stick yoke 34, and the energizing coil 40.
  • the arrangement of the permanent magnet 30, the energizing coil 40 with respect to the diaphragm 20, and the diaphragm The structure and the like of the frame body 22 are basically the same as those of the embodiment shown in FIGS. 1 to 5, and are not shown.
  • the permanent magnets 30 are one permanent magnet, and are magnetized concentrically and alternately in opposite directions from the central area 30a to the ring-shaped outer peripheral area 30b. What was done is used.
  • an energizing coil that passes between areas adjacent to the permanent magnet 30 is used as the energizing coil 40.
  • the number of the outer peripheral area 30b ⁇ the current-carrying coil 40 is not limited to one, and may be plural.
  • two outer peripheral areas 30b and 30c are provided, and magnetized alternately in opposite directions from the central area 30a to the outer peripheral areas 30b and 30c. Have been.
  • the energizing coil two concentric energizing coils 40a and 4Ob passing between areas adjacent to the permanent magnet 30 are provided. The energizing coils 40a and 4Ob are energized in opposite directions.
  • a permanent magnet 30 is used which is magnetized so as to be alternately reversed in a plurality of concentric areas, and the energizing coil 40 is provided between adjacent areas of the permanent magnet 30.
  • the magnetic flux density crossing the coil wire of the current-carrying coil 40 at a right angle is increased, and the electromagnetic force acting on the permanent magnet 30 is further reduced.
  • the response speed of the diaphragm 20 can be increased, and the output of the pump can be increased.
  • the magnetic flux generated in the permanent magnet 30 can be used for electromagnetic force in more space, and the pump efficiency is improved. By creating multiple magnetic circuits still concentrically, a large output can be obtained without increasing the space.
  • a permanent magnet 30 is provided with a first magnet 30a arranged at the center, and one or more rings arranged around the first magnet 30a.
  • a second magnet 3 O b (one in the illustrated example) is formed, and these permanent magnets are alternately magnetized in the opposite direction from the central magnet toward the outer magnet.
  • one or a plurality of energizing coils 40 (one in the illustrated example) passing between the adjacent magnets of the permanent magnet 30 are used as the energizing coil 40.
  • the magnetic flux density of the coil shown in FIG. 11 crossing the coil wire of the current-carrying coil 40 at a right angle becomes high, and the electric field acting on the permanent magnet 30 is increased.
  • the magnetic force can be increased, the response speed of the diaphragm 20 can be increased, and the output of the pump can be increased.
  • the permanent magnet 30 is formed in a disk shape, and the energizing coil 40 is formed in a coil passing near the outer peripheral portion of the disk-shaped permanent magnet 30,
  • the magnet 34 is formed to have a size protruding outward from the outer peripheral portion of the permanent magnet 30.
  • the periphery of the back yoke 34 is located substantially corresponding to the outer periphery of the current-carrying coil 40.
  • FIG. 13 shows the thing of FIG. 12 in which the outer peripheral part of the back yoke 34 is bent in the direction approaching the outer peripheral part of the energizing coil 40. Thereby, the leakage magnetic flux can be further reduced, and the pump efficiency can be increased.
  • the permanent magnet 30 is formed in a ring shape, the back yoke 34 is provided so as to cover the ring-shaped permanent magnet 30, and the energizing coil 40 is 30 is formed on a coil passing near the inner peripheral portion.
  • the leakage flux can be reduced, and the pump efficiency can be increased.
  • the one shown in FIG. 15 is different from the one shown in FIG. 14 in that the central portion of the back yoke 34 is bent in a direction approaching the inner peripheral portion of the current-carrying coil 40 to form a bent portion 34 a. It was done. Also according to this, the back yoke 34 comes close to the energizing coil 40 to reduce the leakage magnetic flux and increase the pump efficiency.
  • the permanent magnet 30 is formed in a ring shape, and the backing 34 covers the ring-shaped permanent magnet 30 and protrudes from the outer peripheral portion of the permanent magnet 30.
  • the current-carrying coil 40 is formed in a size such that the coil 40 c passes near the outer periphery of the permanent magnet 30 and the coil 40 d passes near the inner periphery of the permanent magnet 30. It is formed in.
  • the magnetic flux generated in the permanent magnet 30 can be used for the electromagnetic force in more space, and the pump efficiency is improved. Also, by making a plurality of magnetic circuits concentrically, a large output can be obtained without increasing the space.
  • the outer periphery of the back yoke 34 is connected to the outer periphery of the energizing coil 40c. It is more preferable to bend in a direction approaching the inner surface of the back yoke 34 or to approach the inner peripheral portion of the energizing coil 40.
  • the one shown in Fig. 17 has a permanent magnet 30 with a yoke 41 through which the inner peripheral side of the energizing coil 40 passes, on the diaphragm 26 side (the energizing coil 40 side). You.
  • the outer peripheral side of the back yoke 34 is further protruded outward from the permanent magnet 30, and this protruding portion is bent in a direction approaching the energizing coil 40.
  • the leakage magnetic flux can be further reduced, and the pump efficiency can be improved.
  • the energizing coil (electromagnetic force generating means) 40 is arranged on the first frame body 22a side, but the energizing coil is mounted on the permanent magnet 30 attached to the outer surface of the diaphragm 20. It may be attached to the second frame body 22b side so as to face (not shown).
  • the back yoke 34 for preventing magnetic flux leakage is attached to the surface of the permanent magnet opposite to the surface facing the energizing coil, that is, the surface on the diaphragm side (not shown). ).
  • the shape of the back yoke and the arrangement of the energizing coils can be the ones shown in FIGS. 9 to 17.
  • the permanent magnet 30 is attached to the diaphragm 20 and the energizing coil (electromagnetic force generating means) is attached to the frame body side.
  • the reverse, that is, the permanent magnet is attached to the frame body side
  • an energizing coil electromagagnetic force generating means
  • FIG. 21 shows an embodiment in which the energizing coil 40 is mounted on the outer surface of the diaphragm 20 and the permanent magnets 30a and 30b are mounted on the outer surface of the first frame body 22a.
  • the same members as those in the above embodiment are denoted by the same reference numerals, and description thereof will be omitted.
  • Reference numeral 60 denotes a holding plate for holding the energizing coil 40 on the outer surface of the diaphragm 20. Further, in this case, the energizing coil 40 moves together with the diaphragm 20, so that it is preferable to electrically connect to the drive circuit 50 by the flexible cable 61. Also in this embodiment, the shape of the back yoke ⁇ the arrangement of the energizing coil Can be of the embodiment shown in FIGS.
  • Fig. 22 shows an example in which the energizing coil 40 is attached to the outer surface of the diaphragm 20, and the permanent magnets 30a and 30b are attached to the second frame body 22a so as to face the energizing coil. Is shown.
  • the same members as those in the above embodiment are denoted by the same reference numerals, and description thereof will be omitted.
  • Reference numeral 60 denotes a holding plate for holding the energizing coil 40 on the outer surface of the diaphragm 20. Further, in this case, the energizing coil 40 moves together with the diaphragm 20, so that it is preferable to electrically connect to the drive circuit 50 by the flexible cable 61. Also in this embodiment, the configuration of the back yoke ⁇ the arrangement of the energizing coils can be the embodiment shown in FIGS. 9 to 17.
  • FIG. 23 shows an embodiment in which the back yoke 34 and the energizing coil 40 in the embodiment of FIG. 22 are arranged in the same manner as shown in FIG. That is, the yoke 41 through which the inner peripheral side of the energizing coil 40 passes is disposed on the surface of the permanent magnet 30 on the diaphragm 26 side (the surface on the energizing coil 40 side).
  • the outer peripheral side of the back yoke 34 is further protruded outward from the permanent magnet 30, and this protruding portion is bent in a direction approaching the energizing coil 40. Thereby, the leakage flux can be further reduced, and the pump efficiency can be increased.
  • the electromagnetic diaphragm pump of the present invention it is possible to suitably reduce the size and thickness of the diaphragm pump, and it is possible to easily mount and use the diaphragm pump on a small device such as a notebook computer. Become.
  • the diaphragm chamber is always kept in a clean space, and the air, fuel, and blood supplied from the diaphragm chamber are not contaminated, and the fuel cell and medical It can be used suitably for equipment for use.
  • the shape and arrangement of the back yoke and the number of energizing coils can be easily changed, the leakage flux can be reduced, and the pump output can be improved.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)

Abstract

La présente invention a trait à une pompe à membrane électromagnétique prête à être montée sur un petit appareil. La pompe à membrane électromagnétique est caractérisée en ce qu'elle comporte une chambre à membrane (26) disposée entre une membrane (20) et un corps de châssis (22) par la fixation de la membrane (20) au corps de châssis (22), une soupape d'aspiration (27) et une soupape de refoulement (39) en communication avec la chambre à membrane (26), un aimant permanent (30) fixé à la surface extérieure de la membrane (20), et un moyen (40) prévu sur la surface extérieure du corps de châssis (22) tournée vers l'aimant permanent (30) et assurant la génération d'une force électromagnétique agissant sur l'aimant permanent (30).
PCT/JP2003/017012 2003-02-27 2003-12-26 Pompe a membrane electromagnetique WO2004076862A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003292652A AU2003292652A1 (en) 2003-02-27 2003-12-26 Electromagnetic diaphragm pump

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2003050496A JP2004060641A (ja) 2002-06-06 2003-02-27 電磁式ダイアフラムポンプ
JP2003-50496 2003-02-27

Publications (1)

Publication Number Publication Date
WO2004076862A1 true WO2004076862A1 (fr) 2004-09-10

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PCT/JP2003/017012 WO2004076862A1 (fr) 2003-02-27 2003-12-26 Pompe a membrane electromagnetique

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AU (1) AU2003292652A1 (fr)
WO (1) WO2004076862A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11326588B2 (en) * 2018-08-08 2022-05-10 Seiko Epson Corporation Diaphragm-type compressor, projector, cooler, and method for compressing fluid

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5647279U (fr) * 1979-09-20 1981-04-27
JPS6483870A (en) * 1987-09-26 1989-03-29 Maruka Seiki Kk Diaphragm for blower
JPH02112981U (fr) * 1989-02-23 1990-09-10
JPH0618076Y2 (ja) * 1987-11-25 1994-05-11 サンデン株式会社 往復ポンプ
JPH0777164A (ja) * 1993-08-19 1995-03-20 Lewa Herbert Ott Gmbh & Co ダイヤフラムポンプ
JP2000004569A (ja) * 1998-06-12 2000-01-07 Tokin Corp 振動アクチュエータ
JP3291468B2 (ja) * 1998-07-06 2002-06-10 三洋電機株式会社 音響・振動発生装置
JP2002355798A (ja) * 2001-06-04 2002-12-10 Hitachi Ltd マイクロポンプ、マイクロミキサー、マイクロ機械デバイス、マイクロ可動ミラーおよび光スイッチ
JP3090496U (ja) * 2002-06-05 2002-12-13 健一郎 木下 電磁ポンプ
JP3367669B2 (ja) * 1991-10-07 2003-01-14 パルサフィーダー，インコーポレイテッド ダイアフラム式計量ポンプのダイアフラムの伸長度を制御するための装置
JP2003013862A (ja) * 2001-06-29 2003-01-15 Fujikura Rubber Ltd ダイアフラムを有する空圧機器

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5647279U (fr) * 1979-09-20 1981-04-27
JPS6483870A (en) * 1987-09-26 1989-03-29 Maruka Seiki Kk Diaphragm for blower
JPH0618076Y2 (ja) * 1987-11-25 1994-05-11 サンデン株式会社 往復ポンプ
JPH02112981U (fr) * 1989-02-23 1990-09-10
JP3367669B2 (ja) * 1991-10-07 2003-01-14 パルサフィーダー，インコーポレイテッド ダイアフラム式計量ポンプのダイアフラムの伸長度を制御するための装置
JPH0777164A (ja) * 1993-08-19 1995-03-20 Lewa Herbert Ott Gmbh & Co ダイヤフラムポンプ
JP2000004569A (ja) * 1998-06-12 2000-01-07 Tokin Corp 振動アクチュエータ
JP3291468B2 (ja) * 1998-07-06 2002-06-10 三洋電機株式会社 音響・振動発生装置
JP2002355798A (ja) * 2001-06-04 2002-12-10 Hitachi Ltd マイクロポンプ、マイクロミキサー、マイクロ機械デバイス、マイクロ可動ミラーおよび光スイッチ
JP2003013862A (ja) * 2001-06-29 2003-01-15 Fujikura Rubber Ltd ダイアフラムを有する空圧機器
JP3090496U (ja) * 2002-06-05 2002-12-13 健一郎 木下 電磁ポンプ

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11326588B2 (en) * 2018-08-08 2022-05-10 Seiko Epson Corporation Diaphragm-type compressor, projector, cooler, and method for compressing fluid

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