JPH05231327A - Diaphragm pump - Google Patents

Abstract

PURPOSE:To simplify the constitution of a diaphragm pump and soundproof measures and to reduce the deterioration of a diaphragm by supporting the peripheral section of the diaphragm provided with right and left magnetic substances in a casing and arranging magnetic poles opposing to the magnetic substances on both outsides of the casing. CONSTITUTION:This diaphragm pump reciprocates a diaphragm to introduce outside air into a casing 3 from suction port 1 through the suction valve 7 of an inlet port 10. Then, after compressing the outside air, the diaphragm pump discharges the air from a discharge port 2 of the discharge valve 8 of an outlet port 11. In this case, permanent magnates (b) as magnetic substances are projectedly provided at both sides of the center of the diaphragm 5. On the other hand, a swelling section 12 is formed in a casing 1, to slide support the magnetic substances 4 in this swelling section 12. In addition, magnetic poles 6 are arranged outside the swelling section 12. That is, iron cores 14 around which wires are wound forming coils 13 are arranged. In addition, alternative current is applied to these coils 13 to inverse the magnetic fields of the magnetic poles 6 to attract and repel the magnetic substances 4 to reciprocate the diaphragm 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a diaphragm pump, and more particularly, to simplifying the structure and facilitating soundproofing,
The present invention relates to a technique for reducing the deterioration of the diaphragm.

[0002]

2. Description of the Related Art Conventionally, in diaphragm pumps,
As shown in FIG. 8, two diaphragms 5 and 5 are provided in the casing 3a with their peripheral portions supported, and a moving body a is installed between these diaphragms 5 and 5, and a permanent magnet b is attached to the moving body a. The magnetic pole 6 is attached to the casing 3a so as to face the permanent magnet b. Then, alternating current is applied to the magnetic poles 6 and 6 around which the coil is wound, the magnetic fields (N and S poles) generated in the magnetic pole 6 are inverted for each half wave of the alternating current, and the permanent magnet b is attracted and repelled. The moving body a is vibrated to the left and right, and the reciprocating motion of the diaphragm 5 introduces outside air from the suction port 1 formed in the casing 3, compresses it, and discharges it from the discharge port 2.

[0003]

However, in such a structure, the casing 3a contains the two diaphragms 5, the moving body a, the plurality of permanent magnets b, and the magnetic pole 6 wound with the coil. Since the configuration is complicated, the opening / closing sound of the suction valve 7 at the suction port 1 of the casing 3 and the opening / closing sound of the discharge valve 8 at the discharge port 2 easily leak to the outside of the casing 3 and cause noise. A magnetic pole 6 in which a coil is wound together with a diaphragm 5 in a casing 3.
Built-in, the diaphragm 5 with the temperature rise of the magnetic pole 6
Was raised and was vibrated in an atmosphere at a high temperature to vibrate, thereby shortening the life of the diaphragm 5.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a diaphragm pump having a simplified structure, facilitating soundproofing, and reducing deterioration of the diaphragm. There is to try.

[0005]

According to the present invention, a casing 3 having an intake port 1 and a discharge port 2 is supported by a peripheral portion of a diaphragm 5 having a magnetic body 4 on its left and right sides, and is built in the casing. The magnetic poles 6 facing the magnetic poles 4 are provided on both outer side portions of the casing 3.

[0006]

In this way, the casing 3 having the suction port 1 and the discharge port 2 supports and incorporates the peripheral portion of the diaphragm 5 having the magnetic body 4 on the left and right, and the magnetic pole 6 facing the magnetic body 4 is provided.
Are provided on both outer sides of the casing 3, a single diaphragm 5 having magnetic bodies 4 on the left and right sides is built in the casing 3, and a magnetic pole 6 is arranged outside the casing 3. When the structure is simplified as compared with the structure, and there are magnetic poles 6 on both sides of the casing 3 and these are covered with an outer shell case, the suction port 1 and the discharge port 2 in the casing 3 are present in the central part of the device. As a result, it is possible to easily take measures to prevent the sounds of the suction valve 7 of the suction port 1 and the discharge valve 8 of the discharge port 2 from leaking to the outside, noise countermeasures are facilitated, and in addition, the magnetic pole 6 for winding the coil Is outside the casing 3 and is isolated from the diaphragm 5 inside the casing 3, avoiding exposing the diaphragm 5 to a high temperature atmosphere, avoiding deterioration of the diaphragm 5, Of it is obtained as prolong the service life.

[0007]

Embodiments of the present invention will be described in detail below with reference to the drawings. As shown in FIG. 1, the casing 3 has an inlet 1 and an outlet 2. A pair of support pieces 9 and 9 are extended in the casing 3 so as to face each other in an annular shape, and the peripheral portions of the diaphragm 5 are sandwiched between the support pieces 9 and 9 so that the diaphragm 5 is built in the casing 3. is there. And
An introduction port 10 is formed at a position near each suction port 1 of each support piece 9, and a suction valve 7 is attached to this introduction port 10.
A discharge port 11 is formed at a location near the discharge port 2 of each support piece 9, and a discharge valve 8 is attached to the discharge port 11.
Then, the forward movement of the diaphragm 5 introduces the outside air from the suction port 1 into the casing 3 through the suction valve 7 of the introduction port 10, and the backward movement of the diaphragm 5 introduces it into the casing 3. The outside air is compressed, discharged through the discharge valve 8 of the discharge port 11, and discharged from the discharge port 2.

Permanent magnets b as magnetic bodies 4 such as iron pieces are projected and attached to both sides of the central portion of the diaphragm 5. In this case, the casing 3 has a bulge 12
Is formed, and the magnetic body 4 is preferably supported in the bulging portion 12 so as to be slidable. And the bulge 1
A magnetic pole 6 is arranged outside the unit 2. Specifically, iron cores 14 around which the coil 13 is wound are arranged so as to face each other. Then, by applying an alternating current to the left and right coils 13, 13, the magnetic field of the magnetic pole 6 is reversed to attract and repel the magnetic body 4 of the permanent magnet b to reciprocate the diaphragm 5. You can do it. And
The magnetic pole 6 is covered with an outer shell case 15 that is integrated with the casing 3. The polarities of the electromagnets as the magnetic poles 6 are set to be opposite to each other on the left and right sides in FIG.

As described above, the casing 3 having the suction port 1 and the discharge port 2 supports and incorporates the peripheral portion of the diaphragm 5 having the magnetic body 4 on the left and right, and the magnetic pole 6 facing the magnetic body 4. Are provided on both outer sides of the casing 3, a single diaphragm 5 having the magnetic bodies 4 on the left and right is built in the casing 3, and the magnetic poles 6 are arranged outside the casing 3. The structure is simplified as compared with the structure. Then, there are magnetic poles 6 on both sides of the casing 3, and these are covered with an outer shell case 15, so that the suction port 1 and the discharge port 2 in the casing 3 can be present in the central portion of the device, and the suction of the suction port 1 can be performed. It is easy to take measures to prevent the sound of the valve 7 and the discharge valve 8 of the discharge port 2 from leaking to the outside. Moreover, the magnetic pole 6 around the coil is located outside the casing 3 and is isolated from the diaphragm 5 inside the casing 3 to prevent the diaphragm 5 from being exposed to a high temperature atmosphere and to prevent the diaphragm 5 from deteriorating. However, the life of the diaphragm 5 is extended.

FIG. 2 shows another embodiment of the magnetic body 4
In this example, an iron piece is used and two diodes 16 are interposed. In such an embodiment, as shown in FIG. 2B, half waves alternately flow in the left and right coils 13,
The left and right magnetic poles 6, 6 are alternately magnetized, and the magnetic material 6 of the iron piece is attracted to the magnetized side by the magnetized side, that is, the right side coil 13 in FIG.
Half wave a flows to the right coil 1 due to the half wave current.
3 is magnetized, the iron core magnetic body 4 is attracted to this side, and the diaphragm 5 is moved to the right side. In such cases,
The power supply to the left coil 13 is cut off by the diode 16. Then, in the next half-wave, as shown in FIG. 4, a half-wave current flows in the coil 13 on the left side of FIG. 4A, magnetizes the coil 13 on the left side, and energizes the coil 13 on the right side by the diode. It is cut off at 16, and the magnetic material 4 of the iron piece is attracted to the left side, and the diaphragm 5 is moved to the left side.

5 and 6, the iron core 14 of the magnetic pole 6 is exposed in the bulging portion 12 to minimize the gap c between the magnetic pole 6 and the magnetic body 4 to increase the attractive force. It is a thing. That is, in FIG.
The inner surface of the iron core 14 and the front end surface of the iron core 14 are substantially flush with each other. In FIG. 5B, the iron core 14 is projected into the bulging portion 12. In such a case, the bulging portion 1
A sealant 17 seals between the through hole 2 and the iron core 14 to ensure airtightness.

FIG. 6 shows still another embodiment, in which an iron piece 18 is attached to the magnetic body 4 of the permanent magnet b. FIG. 7 shows another embodiment, in which the casing 3 is made flat without forming the bulging portion 12, and the magnetic body 4 inside the casing 3 is made a permanent magnet b.
A plurality of are combined to increase the magnetic force.

[0013]

As described above, according to the present invention, the peripheral portion of the diaphragm having the magnetic body on the left and right sides is supported and built in the casing having the suction port and the discharge port, and the magnetic pole facing the magnetic body is provided. Since it is provided on both outer sides of the casing, a single diaphragm with magnetic bodies on the left and right is built in the casing, and the magnetic poles are arranged outside the casing, simplifying the configuration compared to the conventional configuration. And, when there are magnetic poles on both sides of the casing and these are covered with an outer shell case, the suction port and the discharge port in the casing can be present in the central part of the device, and the suction valve and the discharge port of the suction port It is easy to take measures to prevent the sound of the discharge valve from leaking to the outside, and noise countermeasures are also easy.In addition, the magnetic pole that winds the coil is outside the casing, and what is the diaphragm inside the casing? Absolute and, to avoid exposing the diaphragm to an atmosphere of high temperature, and avoid degrading the diaphragm, there is an advantage that it is possible to extend the life of the diaphragm.

[Brief description of drawings]

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

2A and 2B show another embodiment of the above, wherein FIG. 2A is a schematic sectional view, and FIG. 2B is an explanatory view showing a current controlled by a diode.

FIG. 3 shows the same operation, (a) is a schematic sectional view,
(B) is explanatory drawing which shows an electric current.

FIG. 4 shows the same operation as above, (a) is a schematic sectional view,
(B) is explanatory drawing which shows an electric current.

FIG. 5 shows still another embodiment of the above, and (a) and (b) are enlarged cross-sectional views of a main part.

FIG. 6 is a schematic sectional view of still another embodiment of the same.

FIG. 7 is a schematic sectional view of still another embodiment of the same.

FIG. 8 is a schematic cross-sectional view of a conventional example.

[Explanation of symbols]

 1 Suction Port 2 Discharge Port 3 Casing 4 Magnetic Material 5 Diaphragm 6 Magnetic Pole 7 Suction Valve 8 Discharge Valve

Claims (1)

[Claims] 1. A casing having a suction port and a discharge port is supported and built in a peripheral portion of a diaphragm having a magnetic body on the left and right sides, and magnetic poles facing the magnetic body are provided on both outer side portions of the casing. Diaphragm pump characterized by being made.