JPH0759947B2 - Cylindrical electromagnetic vibration pump - Google Patents

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a cylindrical electromagnetic vibration pump. More specifically, the present invention relates to a cylindrical electromagnetic vibration pump that can improve mass productivity by unitizing an electromagnet and can easily cope with a large capacity simply by increasing the number of units.

The pump of the present invention can be applied as a low-pressure pump to the fields of supplying air and water for septic tanks, fish farming, physics and chemistry, etc.

[0003]

2. Description of the Related Art Conventionally, FIG. 5 shows a vibration type pump for sucking and discharging a fluid by utilizing the vibration of a vibrator equipped with the permanent magnet, which is based on a magnetic interaction between an electromagnet and a permanent magnet. The shape is used.

The pump shown in FIG. 5 comprises a pair of stator yokes 31, a center yoke 32 sandwiched between the stator yokes 31, and a coil 33 wound in a cylindrical shape inside the stator yoke 31. An electromagnet 34 is provided. Inside the electromagnet 34, a vibrator 37 having permanent magnets 36 having side plates 35 fixed to both ends is arranged. When an alternating current is passed through the coil 33, the yokes 31 and 32 are magnetized into N poles or S poles in synchronization with the change in the alternating current, and the attraction or repulsive force between this and the side plates 35 at both ends of the permanent magnet 36. The vibrator 37 vibrates left and right, pushing and pulling a diaphragm (not shown).

[0005]

The pump shown in FIG. 5 has a problem that the electromagnet is composed of a stator yoke and a center yoke, the structure is complicated, and an extra member is required. . Further, if it is desired to increase the pump capacity, it is conceivable to increase the number of turns of the coil, but in this case, there is a problem that the outer diameter of the pump becomes large and the device becomes large.

In view of the above circumstances, it is an object of the present invention to provide a cylindrical electromagnetic vibration pump capable of improving mass productivity and increasing the pump capacity without increasing the pump outer diameter. And

[0007]

A cylindrical electromagnetic vibration pump of the present invention is characterized by electromagnetic vibration of a vibrator provided with the permanent magnet, which is based on a magnetic interaction between an electromagnet and a permanent magnet.
A cylindrical electromagnetic vibration pump for driving a diaphragm connected to the vibrator, comprising a cylindrical electromagnetic coil in which a coil is cylindrically wound in an annular core, and the electromagnetic core is disposed in the electromagnetic core. A rod-shaped oscillator provided with a permanent magnet and a diaphragm connected to the oscillator, wherein the annular core is formed by a pair of core members having a substantially C-shaped cross-section butted in line symmetry. Is characterized by.

[0008]

In the pump of the present invention, the core of the electromagnetic coil is a half-split type, and a pair of substantially C-shaped cross-section core members are abutted in line symmetry. For this reason, members having the same shape can be used, and moreover, they can be manufactured by press working, which is excellent in productivity. Further, the pump capacity can be increased without increasing the outer diameter of the pump simply by arranging the cores in the axial direction of the vibrator.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A cylindrical electromagnetic vibration pump of the present invention (hereinafter simply referred to as a pump) will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a sectional explanatory view of an embodiment of the pump of the present invention.

In FIG. 1, reference numeral 1 denotes a cylindrical frame made of metal, plastic, or the like, and an electromagnetic coil and a vibrator described later are arranged in the frame 1. Reference numeral 2 is an annular core, which constitutes an electromagnetic coil together with a coil 3 wound in a cylindrical shape inside the core 2. The annular core 2 is of a so-called half-type, and has core members 4 having a substantially C-shaped cross section butted in line symmetry as shown in FIG. The core member 4 can be obtained by forming an ordinary iron plate or electromagnetic steel plate having a thickness of about 2 to 3 mm. Therefore, the manufacturing is simple and the cost can be reduced. Further, since the same shape can be used, it is possible to reduce the cost by mass production. Other than a single piece, the core member 4 has a thickness of 0.5 to 1 mm.
It is also possible to use an iron plate, a silicon steel plate or the like having a certain number of layers of 2 to several layers. When such a laminate is used, iron loss can be reduced and efficiency can be improved.

A vibrator 5 (see FIG. 3) is provided at the center of the frame 1.
(See) is provided. The vibrator 5 has a cylindrical permanent magnet 6, and cup-shaped pole pieces (pole pieces) 7 having a C-shaped cross section are fixed to both end surfaces of the permanent magnet 6. In the embodiment shown in FIG. 1, the permanent magnet 6 and the pole piece 7 are not directly fixed to the shaft 5a of the vibrator 5, but are fixed to the shaft 5a via the sleeve 8. This sleeve 8 may be omitted. The retaining rings 9 are fixed to both ends of the sleeve 8. Since the pole piece 7 shown in FIG. 1 has a C-shaped cross section and has a recess 10, a weight or member for adjusting the weight of the vibrator 5 in the recess 10 is provided. be able to. As the permanent magnet 6, a ferrite magnet or a rare earth magnet can be used.

Both ends of the shaft 5a of the vibrator 5 pass through a resin or metal type slide bearing 13 provided in the recess 12 of the bracket 11, and a center plate 14 is used to E
It is connected to the diaphragm 15 made of PDM or the like.
The center plates 14 are provided on both sides of the diaphragm 15, and the diaphragm 15 is pushed and pulled to right and left (see FIG.
In) is the element to be displaced. Center plate
The diaphragm 14 and the diaphragm 15 are interposed between the nut 16 and the mounting seat 17, and are fixed to the tip of the vibrator 5 by being tightened by the nut 16. The periphery of the diaphragm 15 is attached to the diaphragm base 18.

Pump compression chambers (not shown) are provided outside the left and right diaphragms 15, respectively, so that fluid can flow into and out of the compression chambers via a suction chamber and a discharge chamber equipped with valves. Has become.

Next, the operation of the pump of this embodiment will be briefly described.

When an alternating current is passed through the electromagnetic coil, magnetic poles of N pole and S pole are alternately generated at both ends of the electromagnetic coil in synchronization with the change of the alternating current, whereby the core 2 which is a magnetic body also changes in the alternating current. The magnets are magnetized in synchronism, and magnetic poles of different polarities appear alternately at their tips. Thus
The vibrator 5 reciprocates in the left-right direction in FIG. 1 due to the attractive force and the repulsive force between the tip of the core 2 and the outer peripheral surfaces of the pole pieces 7 provided at both ends of the permanent magnet 6, and the diaphragm 15 interlocks with this. It vibrates left and right. The vibration (displacement) of the diaphragm 15 causes the volume of the pump compression chamber to change, so that fluid such as air and water is sucked and discharged.

In the embodiment shown in FIG. 1, two units or two electromagnetic coils are arranged in the axial direction of the vibrator, but the number of units may be increased to increase the pump capacity. In this case, the size of the vibrator in the axial direction becomes large, but the outer diameter of the frame 1 of the pump can be kept constant. FIG. 4 is a diagram showing an example of a vibrator and an electromagnetic coil when the number of units is three.

[0018]

As described above, in the pump of the present invention, the core of the electromagnetic coil is a half-split type, and the core members having a substantially C-shaped cross section are abutted against each other. Therefore, since the core can be manufactured by press working, productivity can be improved. Further, the pump capacity can be increased simply by increasing the number of units in the vibrator axial direction. Furthermore, since the same unit, that is, a member can be used regardless of the size of the pump,
The types of parts can be reduced, and the cost can be reduced by mass production.

[Brief description of drawings]

FIG. 1 is a sectional explanatory view of an embodiment of a pump of the present invention.

FIG. 2 is a cross-sectional view of a core member having a substantially C-shaped cross section that constitutes an annular core.

3 is an explanatory diagram of a vibrator of the pump shown in FIG.

FIG. 4 is a diagram showing an example of an electromagnetic coil and a vibrator having three units.

FIG. 5 is a cross-sectional explanatory view of a conventional pump.

[Explanation of symbols]

 1 core 3 coil 4 core member 5 oscillator 6 permanent magnet 15 diaphragm

Claims (4)

[Claims] 1. A cylindrical electromagnetic vibration pump for driving a diaphragm connected to a vibrator by electromagnetic vibration of a vibrator including the permanent magnet, which is based on a magnetic interaction between an electromagnet and a permanent magnet. , A cylindrical electromagnetic coil in which a coil is wound into a cylindrical shape in an annular core, a rod-shaped oscillator provided in the electromagnetic core and provided with a permanent magnet, and connected to the oscillator A cylindrical electromagnetic vibration pump, comprising a diaphragm, and the annular core configured by a pair of core members having a substantially C-shaped cross section butted in line symmetry. 2. The cylindrical electromagnetic vibration pump according to claim 1, wherein two or more sets of the electromagnetic coils are arranged in the axial direction of the vibrator. 3. The cylindrical electromagnetic vibration pump according to claim 1, wherein the member forming the annular core is a laminate of magnetic materials. 4. The rod-shaped oscillator comprises cup-shaped magnetic pole pieces having a C-shaped cross section on both end surfaces of a permanent magnet.
Or the cylindrical electromagnetic vibration pump described in 3.