JPH1030598A - Blower with filter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve forcibly air cooling and filter effect, wash a filter to use it repeatedly, and improve economics by installing surface filter on which multiple narrow insulated wire materials are radially arranged on the front surface or the back surface side of the impeller of the output shaft of a driving motor provided with multiple intake impellers. SOLUTION: A surface filter 14 and multiple intake impellers 2 are arranged in order on the output shaft 3 of a driving motor 1. The surface filter 14 is formed in such a constitution that narrow insulated wire materials 14d are hooked radially on an outer periphery between ring members 14a, b whose diameters connected by a connecting member 14c are different from each other. Dust 7 and the like in air 20 are eliminated by the surface filter 14 which is rotated integratedly with an intake impeller 2. When stuck dust 7 and the like exceed a constant rate, the duct 7 is splashed and eliminated from an insulated wire material 14d toward a tangent direction by centrifugal force, the duct 7 falls down in an annular groove 13, and the duct 7 is discharged outside a fan case 10 or recovered. It is thus possible to improve forcibly air cooling and efficiency of a filter effect, and it is also possible to prevent plugging on the surface filter 14 so as to carry out cleaning simply.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blower with a filter, and more particularly, to a blower with a filter in which a plurality of blades are attached to an output shaft of a drive motor disposed in an intake passage.

[0002]

2. Description of the Related Art In an electric device and a control device such as an electronic computer which requires forced air cooling and refuses to invade dust, a blower having a large number of blades attached to an output shaft of a drive motor is used for forced air cooling. In addition, a surface filter is used as dust removing means, and by combining these, dust in the air taken into the apparatus, particulate oil floating in the air, etc. are removed, and clean air is supplied. I have.

FIG. 4 shows a conventional example of such a blower with a filter. In FIG. 4, reference numeral 1 denotes a drive motor, and 2 denotes a number of blades attached to an output shaft 3 of the drive motor 1. These constitute a blower 4. 5 is a blower 4 so as to cover the suction port 6 of the apparatus.
Is a surface filter fixedly arranged in front of the filter. The surface filter 5 is generally made of filter paper, filter cloth, foamed resin, or the like.

[0004]

However, in such a conventional blower with a filter, since the surface filter 5 is fixedly disposed at the suction port of the apparatus, dust in the air and fine particles floating in the air are not provided. Once the dust 7 such as oil adheres to the surface filter 5, the dust 7 remains attached unless the surface filter is replaced. Since the dust 7 and the like stuck to the surface filter 5 cannot be completely removed, it is impossible to reuse the once used surface filter 5. As a result, each time clogging occurs, replacement with a new surface filter is performed, which is extremely uneconomical. Further, in such a conventional filter, if the particles such as the dust 7 are large to some extent, it is easy to catch the dust. However, the particles such as the dust 7 are on the order of microns or submicrons like smoke. Then, it becomes difficult to capture with the above-mentioned surface filter. To remove such fine particles, it is conceivable to make the filter thicker.However, thickening increases the resistance to wind in the filter part and weakens the flow, improving both forced air cooling and the filter effect. Doing so was difficult with conventional structures.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of such conventional problems, and it is an object of the present invention to increase the efficiency of both the forced air cooling and the filter effect as compared with the prior art. It is an object of the present invention to provide a fan with a filter which can be used many times by washing the filter and which is highly economical.

In order to achieve this object, a drive motor which is disposed in an intake passage and has a plurality of intake blades attached to an output shaft, and which is attached to an output shaft of the drive motor on the front or back side of the blade, Provided is a blower with a filter having a surface filter in which a large number of thin insulated wires are radially arranged. When the air sucked from the surface filter passes through the insulated wire of the surface filter, dust and the like are captured, and the captured dust and the like move to the outer end along the insulated wire, and move from the outer end to the outer side. Will be released.

With such a configuration, a surface filter is formed by arranging a large number of thin insulated wires in a radial pattern, and the surface filter is charged so that dusts on the order of microns or submicrons can be removed. Dust and the like captured by the surface filter move to the outer end along the attached insulating wire, and are discharged to the outside from the outer end. Even if the surface filter having such a configuration is clogged, dust and the like move in the above-described radial direction and are removed, so that the original clean state can be easily obtained by blowing compressed air or water. It can return and allow reuse.

The surface filter may have a configuration in which a plurality of the above-described filter units are stacked as necessary. By stacking a plurality of filter units in this manner, the effect of capturing dust and the like can be further enhanced. Also,
The surface filter may be configured to be charged. By doing so, the effect of capturing dust and the like can be further enhanced.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a blower with a filter according to the present invention will be described in detail based on an embodiment shown in the drawings. 1 and 2 show one embodiment of a blower with a filter according to the present invention. In these drawings, the same components as those in FIG. 4 are denoted by the same reference numerals. In these figures, a fan case 10 constituting an intake passage is formed in a cylindrical shape as a whole by connecting a plurality of portions having different inner diameters in steps by a resin, a metal plate or the like. The large-diameter front end 10a of the fan case 10 is
One suction port 11a is fitted and fixed. The drive motor 1 is fixed inside the fan case 10 by an appropriate method. The output shaft 3 of the drive motor 1 has a surface filter 14 and a large number of intake blades which are characterized by the present invention. 2 are arranged in this order from the front end 10 a of the fan case 10. In addition, fan case 10
Inside the front end portion 10a, two inner flanges 10b and 10c each having an annular shape are spaced apart from each other at appropriate intervals in the front and rear. These inner flanges 10b, 10
c and the fan case 10 between the inner flanges 10b and 10c.
The annular groove 13 is formed with the inner peripheral surface. This annular groove 13 is subjected to centrifugal separation of mist such as oil and dust 7 that has fallen from a surface filter 14 attached to the front surface of the intake blade 2, thereby falling, and thereby the front portion 10 a of the fan case 10. This prevents dust 7 and the like from flowing out of the apparatus. The diameter of the inner flange 10c is made smaller than the inner diameter of the inner flange 10b so that dust 7 and the like are prevented from flowing into the drive motor 1 side. A mist drain 15 for guiding collected oil, dust 7 and the like to an external pipe 16 is provided at a lower position of the annular groove 13.

The surface filter 14 is composed of two ring members 14a and 14b having different diameters and these ring members 1a and 14b.
A plurality of equally arranged connecting members 14 for connecting 4a, 14b
c and these ring members 14a, 14b are radially wrapped around the outer periphery and both ends are connected to the ring members 14a, 14b.
b and the elongated insulated wire 14d fixed by b. Insulated wires are made of plastic, cotton,
Made of silk and other insulating materials. The surface filter 14 is detachably attached to the front surface of the intake blade 2 and, if necessary, is fixed to the intake blade 2 or the output shaft 3 using an adhesive tape or other known means. The surface filter 14 can be directly attached to the output shaft 3, and it goes without saying that the method of attaching the surface filter 14 to the drive motor 1 is not limited to the above-described embodiment.

The surface filter 14 is disposed facing the annular groove 13 between the above-mentioned flanges 10b and 10c, and the inner flange 10c on the rear side has a smaller inner diameter than the inner flange 10b on the front side as described above. The inner peripheral portion on the front side is closely opposed to the outer peripheral portion on the back surface of the surface filter 14, thereby partitioning the front and rear space of the surface filter 14, and dust 7 and the like form a gap between the surface filter 14 and the inner flange 10 c. It is prevented from passing through and entering the fan case 10. The insulated wire 14d is not limited to a straight wire, but may be a zigzag bent wire. When attaching the insulated wire 14d to the disc portion 14a, the long insulated wire is bent into two at its center, and the bent portion is hooked and fixed to the disc portion 14a, and the insulated wire is dropped by centrifugal force. Can be prevented. When the insulated wires are overlapped, the directions are aligned to some extent due to the centrifugal force. Therefore, the wires need not always be aligned neatly and overlapped, but may be randomly overlapped and cross each other. In addition, since the surface of the insulated wire may be substantially formed of an insulative material, a structure in which a metal wire is insulatively coated may be used.

In the blower with a filter having such a configuration, when the intake blade 2 is rotated by driving the drive motor 1, the intake blade 2 moves from the axial direction of the output shaft 3 of the drive motor 1 to the outside of the apparatus. The air 20 is sucked into the fan case 10 and discharged in the radial direction. At this time,
The surface filter 14 rotating integrally with the intake blade 2 is
The dust 7 and the like contained in the air 20 are removed, and clean air 20 'is fed into the apparatus.

When the thickness or the amount of the dust 7 or the like adhered to the surface filter 14 becomes a fixed amount (determined by the rotation speed of the blade 2 and the weight of the dust or the like), the insulating wire of the surface filter 14 is formed by centrifugal force. The particles are scattered and removed from the surface in the tangential direction, and fall into the annular groove 13. Therefore,
The surface filter 14 is less clogged and the inner flange 1
Since the front and rear spaces of the surface filter 14 are partitioned by 0b and 10c, the dust 7 removed from the surface filter 14 is removed.
And the like do not pass through the outside of the surface filter 14 and are sucked into the fan case 10. Further, dust 7 and the like falling into the annular groove 13 are transferred from the mist drain 15 to the pipe 1.
6 and is discharged or collected outside the fan case 10. It has been confirmed that the dust removal performance at this time is equivalent to the conventional one.

Further, since the surface filter 14 is rotated, the insulated wire rod 14d is compared with a conventional fixed filter.
Even if the size of the particles such as the dust 7 is larger than the interval, the surface filter 14 can capture the particles and remove even the small dust. In particular, when the surface filter 14 is formed by stacking a plurality of filter units, this effect is further enhanced.

Further, in the present invention, the dust 7 and the like adhering to the surface filter are separated from the surface filter by a centrifugal force at an appropriate cycle and fall off. Since a thin insulated wire is used, the adsorbing force of dust and the like on these insulated wires is weaker than the adhering force of dust and the like adhering to the surface filter in the conventional structure. When the air is removed from the blade 2 or the output shaft 3 and compressed air or cleaning water is sprayed on the surface filter 14, dust 7 and the like adhering to the surface filter 14 can be cleaned cleanly without damaging the filter itself. , Can be reused.

In the above-described embodiment, the drive motor 1 is disposed in the fan case 10 with the intake blade 2 facing the outside of the apparatus. However, it is needless to say that the drive motor 1 may be disposed in the opposite direction. Further, dust and the like often pass through various charged portions, and thus are often charged. In this case, whether the charge is positive or negative depends on the environment used. For this reason, as shown in FIG. 4, if a plurality of electrodes 30 a to 30 d are arranged around the surface filter 14 from the charging device 30 that generates the same charge as the charge of dust or the like, the surface filter formed of an insulated wire material 14 is charged to a charge different from that of the dust and the like, so that the capturing effect of attracting the dust and the like and capturing them can be enhanced.

In this case, when the charging device periodically changes the positive and negative charging states, the surface filter 14 is also changed to periodically charge and catch or escape charged flying dust and the like. The trapping effect can be enhanced.

The above-mentioned insulated wire may of course be formed in a zigzag or twisted shape in order to increase the area for capturing dust and the like.

Further, in the structure of the above-described embodiment, if dust or the like adhered to the insulated wire of the surface filter 14 adheres to a certain extent, the relationship between the centrifugal force and the adhesive force is broken, and the dust is separated from the insulated wire. In order to more completely remove the dust and the like, as shown in FIGS. 4A and 4B, the sweeper member 50 is arranged at a predetermined distance from one side (front surface) or the outer peripheral edge of the surface filter 14. You may do so. In this way, when the thickness of dust or the like attached to the surface filter 14 becomes larger than a predetermined distance, the sweeper member 50
And can be forcibly removed. With this configuration, the surface filter can be reused. The sweeper member 50 is made of a material such as rubber, metal, and plastic.

[0020]

As described above, according to the blower with a filter according to the present invention, since the surface filter is made of an insulated wire, the effect of capturing dust and the like passing through the surface filter can be enhanced and the force can be increased. The efficiency of both the air cooling and the filter effect can be increased more than before.
Further, since the surface filter is attached to the output shaft 3 of the drive motor and rotated, dust and the like adhering to the surface filter are
If it adheres to some extent, it is effectively scattered and removed by the centrifugal force of its own weight. Therefore, clogging of the surface filter is small, the air-blowing efficiency is improved, and the number of filter replacements can be reduced.

Further, since the surface filter is formed by arranging thin insulated wires radially and overlapping them in the axial direction of the filter, the filter can be easily cleaned by blowing air or cleaning water, and furthermore, the filter itself can be cleaned. Since it is not damaged, it can be reused, is economical, and has a great practical effect.

Further, this surface filter can further enhance the effect of capturing dust and the like by laminating a plurality of the above-described filter units as necessary. Further, even when the surface filter is configured to be charged, the effect of capturing dust and the like can be further enhanced.

Further, a sweeper member is disposed at a predetermined distance from one side or the outer peripheral edge of the surface filter, and when the thickness of the dust or the like attached to the surface filter becomes larger than the predetermined distance, the dust or the like comes into contact with the sweeper member. Forcibly removed. With this configuration, the surface filter can be reused.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of a blower with a filter according to the present invention.

FIG. 2 is a partially cutaway front view of the blower.

FIG. 3 is a diagram corresponding to FIG. 2, showing another embodiment of the present invention.

4A and 4B show another embodiment of the present invention, in which FIG. 4A shows an example in which a sweeper member is disposed on one side of a surface, and FIG. 4B shows an example in which a sweeper member is disposed on the periphery of the surface. .

FIG. 5 is a side view of a conventional blower with a filter.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Drive motor, 2 ... Intake blade, 3 ... Output shaft, 4 ... Blower, 5 ... Surface filter, 6 ... Suction port, 7 ... Dust, 10 ...
Fan cases, 10a, 10b: inner flange, 11: device body, 14: surface filter, 15: mist-in, 30
... Charging device, 30a to 30d ... Electrode, 50 ... Sweeper member.

Claims (6)

[Claims] 1. A drive motor disposed in an intake passage and having a plurality of intake blades attached to an output shaft thereof, and a plurality of drive motors attached to an output shaft of a drive motor on a front surface or a rear surface side of the intake blade. A surface filter in which thin insulated wires are radially arranged, and when air sucked from the surface filter passes through the insulated wire of the surface filter, dust and the like are captured, and the captured dust and the like travel along the insulated wire. A blower with a filter, wherein the blower moves to an outer end and is discharged outward from the outer end. 2. The blower with a filter according to claim 1, wherein the insulated wire is formed in a zigzag shape or a twisted shape. 3. The surface filter according to claim 1, wherein the surface filter is formed by laminating a plurality of filter units in which a large number of thin insulated wires are radially arranged.
A blower with a filter as described. 4. A blower with a filter according to claim 1, further comprising a charging means for charging said surface filter. 5. The outer periphery of the surface filter faces an annular groove formed between inner flanges arranged at intervals in the intake passage, and the inner flange on the suction side has an inner flange remote from the suction side. The blower with a filter according to claim 1, 2, 3, or 4, wherein the blower is formed to be larger than the diameter of the flange. 6. A blower with a filter according to claim 1, wherein a sweeper member is disposed at a predetermined distance from a front surface or an outer peripheral surface of the surface filter.