JPS6140327Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field The present invention relates to an electromagnet device for magnetizing a magnetic pole core of an electromagnetic filter device for water treatment or the like.

Prior Art Figures 1 and 2 show a conventional electromagnetic filter device for water treatment, etc. together with its electromagnetic device, and the water to be treated, etc. is distributed (in the direction of the solid line arrow in Figure 1).
A magnetic pole core 4 with a filter 2 inserted therein and a plurality of upper and lower flow holes 3 is installed inside the container 1 in the middle of piping, and an excitation coil 5 for exciting the magnetic pole core 4 is installed outside the container 1. In addition, a yoke 7 that forms a magnetic closed circuit with the pair of upper and lower magnetic pole cores 4 and the filter 2 as a magnetic path is attached by combining the upper and lower side yoke pieces 7A and 7B, and A portion 1' of the gap A between the magnetic pole cores 4 of the container 1 is formed of a non-magnetic material, and the other portions other than the gap A are formed of a magnetic material.

In this case, the excitation coil 5 is attached to the container 1 via the case 6, and the ampere turns corresponding to the number of magnetic fluxes required for filter processing are large, so the external diameter B of the excitation coil 5 is large, and the yoke on each upper and lower surface is large. The plate thickness of the piece 7A is set to correspond to the passage of the number of magnetic fluxes required for filter treatment of water to be treated, etc. between the magnetic pole iron core 4 and the yoke piece 7A, and is relatively thick, and corresponds to this plate thickness. Since the effective cross-sectional area of the yoke 7 is set as follows, the width C of the yoke 7 is relatively small and smaller than the outer diameter B of the exciting coil 5. The gap A between the magnetic pole core 4 and the yoke 7 is relatively large, so the magnetic flux generated in the exciting coil 5 is
In addition to the magnetic flux that passes through the gap A that is effective for filtering through the magnetic closed circuit formed by It became necessary to further increase the power consumption, which resulted in the disadvantage that the power consumption was large compared to the processing capacity, and the overall external shape of the electromagnet device 8 as well as the excitation coil 5 became large.

Also, the total number of magnetic flux between the magnetic pole cores 4 generated by turning on the excitation coil 5 is Φ1 Maxwell, the magnetic flux density of the magnetic field is B1 Gauss, and the gap length is Acm.
If the radius of the magnetic pole core 4 is R1cm, the magnetic pole core 4
Assuming that the magnetic flux in the magnetic field between is uniformly distributed over an area whose radius extends from the radius R1 by half the gap length 2/A, in this case, the following equation holds true.

Φ1=B1(R1+A/2) ² π...(1) Here, the magnetic flux density of the magnetic pole core 4 is B2 Gauss,
If the space factor of the effective part of the magnetic pole core 4 is α, then Therefore, from this equation (2), the smaller the radius R1 of the magnetic pole core 4 is for a constant gap length A, the more the magnetic pole core 4
It can be seen that the magnetic flux density B2 increases and the magnetic flux becomes saturated.

As a result, according to the required processing capacity of the electromagnetic filter device, the radius R1 of the magnetic pole core 4 is determined along with the filter 2.
When the excitation coil 5
The disadvantage is that the ampere-turns must be further increased, and the number of turns of the excitation coil 5 must be increased or the excitation current must be increased by this increase.

Purpose of the Invention Therefore, the present invention provides an electromagnetic device that can effectively increase the magnetic flux in the gap between the magnetic pole cores without increasing the radius of the magnetic pole cores and without increasing the magnetic flux density of the magnetic pole cores. In particular, the object is to eliminate the drawbacks of the prior art.

Structure of the invention As shown in Fig. 3, the present invention has a filter 10 inserted into a container 9 in the middle of piping through which water to be treated, etc. flows (in the direction of the solid arrow in Fig. 3), and a plurality of upper and lower pairs of flow holes 11 In addition to attaching the magnetic pole core 12 with a formed magnetic pole core 12 and attaching an excitation coil 13 for exciting the magnetic pole core 12 outside the container 9, a yoke 14 is attached that forms a magnetic closed circuit using the magnetic pole core 12 and the filter 10 as a magnetic path, and , an electromagnet device characterized in that an additional magnetic pole core 15 is formed on the outer peripheral portion of the container 9 to reduce the magnetic flux density of the magnetic pole core 12 portion of the magnetic closed circuit.

Embodiment Figures 4 and 5 show the first embodiment of the present invention, in which water to be treated, etc. is distributed (in the direction of the solid line arrow in Figure 4).
A magnetic pole core 19 with a filter 17 inserted therein and a plurality of upper and lower flow holes 18 is installed inside the container 16 in the middle of piping, and an excitation coil 20 for exciting the magnetic pole core 19 is attached to the outside of the container 16. In addition, the yoke 22, which forms a magnetic closed circuit with the pair of upper and lower magnetic pole iron cores 19 and the filter 17 as magnetic paths, has upper and lower yoke pieces 22A, side yoke pieces 22B, and a magnetic material (mild steel). The front side wall piece 22C and the back side wall piece 22D are combined to surround the outer periphery of the excitation coil 20 and also serve as a case. The plate thickness of each of the pieces 22A to 22D constituting the is formed to be relatively thin corresponding to an effective cross-sectional area sufficient to secure the necessary magnetic flux density, and the front side wall piece 22C has a piping port 21A of the water cooling pipe 21. ,21
In addition to the above, an internal inspection window 23 is formed, and a lid 24 is removably attached to the window 23.

In this case, in particular, additional magnetic pole cores 25 are provided on the upper and lower yoke pieces 22A for reducing the magnetic flux density of the magnetic pole core 19 between the radial container 16 and the excitation coil 20. It is installed by inserting a non-magnetic material partition body 26 into the part corresponding to the gap A between the containers 16 and 16.
A portion 16' corresponding to the gap A between the upper and lower magnetic pole cores 19 is formed of a non-magnetic material.

In the electromagnet device 27 configured in this way, the exciting coil 20 is connected to the yoke 2 which also serves as the case.
2, the width C of the yoke 22 is larger than the diameter B of the excitation coil 20, and therefore,
The magnetic flux generated in the excitation coil 20 can effectively pass through the magnetic closed circuit with almost no leakage, and in this case, the total number of magnetic fluxes between the magnetic pole cores 19 generated when the excitation coil 20 is turned on is calculated by Φ2 Maxwell, the The magnetic flux density of the magnetic field is the same as in the conventional case.
B1 Gauss, same gap length Acm, additional magnetic pole iron core 2
The radius of the entire magnetic pole core 19, 25 including 5 is R2cm
Also in this case, assuming that the magnetic flux in the magnetic field between the pole iron cores 19 and 25 is uniformly distributed over an area whose radius extends from the radius R2 by half the gap length 2/A,
In this case, the following equation holds.

Φ2=B1(R2+A/2) ² π...(3) Here, the magnetic pole core 1 including the additional magnetic pole core 25
If the magnetic flux density of the entire magnetic pole core 19, 25 is B3 Gauss, and the space factor of the effective part of the entire magnetic pole iron core 19, 25 is β, In general, β>α, and by increasing R2, the magnetic flux density B3 of the entire magnetic pole core 19, 25 can be decreased, thereby reducing the magnetic flux density B3 of the magnetic pole core 19, 25.
Saturation of the magnetic flux at 9 and 25 can be avoided.

In other words, the container 1 is
Even if the diameter of the magnetic pole core 19 is reduced along with the inner diameter of the magnetic pole core 6, by attaching the additional magnetic pole core 25, the magnetic flux necessary and sufficient for filter processing can be leaked between the magnetic pole cores 19 without saturating the magnetic flux. As a result, the number of ampere turns of the excitation coil 20 can be reduced, and as a result, the power consumption of the electromagnetic device 27 can be reduced and its external shape can be made smaller.

In addition, in this case, by providing the additional magnetic pole core 25, the magnetic pole core 1 including the additional magnetic pole core 25
The radius of the joint between 9, 25 and the yoke piece 22A on each upper and lower surface is increased to R2, and the joint area S is S = 2π, where T is the plate thickness of the yoke 22A on each upper and lower surface.
From R1·T, S=2πR2·T increases by the radius increase of the additional magnetic pole core 25, and
The plate thickness T of the upper and lower yoke pieces 22A can be made thinner by that amount, thereby reducing the cost and weight of the electromagnet device 27.

Incidentally, when the number of magnetic fluxes required by the magnetic field between the magnetic pole cores 19 is relatively small and there is no need to make the magnetic pole core 19 thick, the additional magnetic pole core 25 can be replaced with a mounting flange 28 as shown in FIG.

Next, FIG. 7 shows a second embodiment of the present invention, in which
In this case, the mounting flange 3 is attached to the additional magnetic pole core 29.
The additional magnetic pole core 29 is attached to the upper and lower yoke pieces 31A with the additional magnetic pole core 29 penetrating through the upper and lower yoke pieces 31A. The radius of the joint with the mounting flange 30 is substantially the radius R3
3 yoke pieces on each side of the top and bottom.
The structure, operation, and effects are almost the same as those of the first embodiment, except that the plate thickness T of 1A can be made even thinner.

Next, FIG. 8 shows a third embodiment of the present invention.
In this case, the additional magnetic pole core 25 of the first embodiment
Instead, as shown in FIG. 8, a portion 33' of the container 33 facing the magnetic pole core 34 in the radial direction is made thicker, and between this thicker portion 33' and the upper and lower yoke pieces 35A, The structure, operation, and effects are almost the same as those of the first embodiment, except that a packing 36 for preventing foreign matter such as water droplets from entering is attached to the gap.

Effects of the invention According to the electromagnet device of the present invention, an additional magnetic pole core is provided on the outer circumference of the container so as to face the radial direction of the internal magnetic pole iron, thereby preventing an increase in the magnetic flux density of the internal magnetic pole iron. This has the effect of effectively increasing the magnetic flux of the magnetic field between the magnetic poles and cores.

[Brief explanation of the drawing]

Fig. 1 is a front view of the conventional embodiment taken along the line Y--Y in Fig. 2, Fig. 2 is a partially cut-away plan view of half the surface taken along the line X-X in Fig. 1, and Fig. 3 is the configuration of the present invention. FIG. 4 is a partially cutaway front view showing half of the first embodiment of the present invention taken along line Y-Y in FIG.
FIG. 5 is a partially cutaway front view with half taken along line X-X in FIG. 4, FIG. 6 is a partially cutaway front view corresponding to FIG. FIG. 7 is a half-section front view of the second embodiment of the present invention, and FIG. 8 is a half-section front view of the third embodiment of the present invention. 9... Container, 10... Filter, 11... Distribution hole, 12... Magnetic pole core, 13... Exciting coil, 1
4...Yoke, 15...Additional magnetic pole iron core.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A magnetic pole core having a plurality of upper and lower pairs of flow holes is installed by inserting a filter into a container in the middle of piping through which water to be treated, etc. is distributed, and the magnetic pole core is placed outside the container. In addition to attaching an excitation coil for excitation, a yoke is attached to form a magnetic closed circuit using the magnetic pole core and the filter as a magnetic path, and a yoke is attached to the outer peripheral portion of the container to reduce the magnetic flux density of the magnetic pole core portion of the magnetic closed circuit. An electromagnetic device characterized by forming an additional magnetic pole iron core. (2) An additional magnetic pole core for reducing the magnetic flux density of the magnetic pole core is attached to the top yoke piece and bottom yoke piece of the yoke facing the magnetic pole core so as to face the magnetic pole core in the radial direction of the magnetic pole core. An electromagnetic device according to claim 1 of the utility model registration claim. (3) The electromagnet device according to claim 1 of the utility model registration, characterized in that the additional magnetic pole core is formed with a thick container wall in a portion facing the magnetic pole core in the radial direction of the magnetic pole core.