JPH07100406A - Electric dust collector - Google Patents

Abstract

PURPOSE:To provide an electric precipitator wherein a filter, an ionizer and a collector are inserted in a casing to be fixed therein. CONSTITUTION:First, second and third frame parts are formed in a casing and primary filter 12 is fitted to the first frame part and an ionizer 14 and a collector 22 are integrally fitted to the second frame part and a rear filter 13 is fitted to the third frame part. Since the ionizer 14 and the collector 22 are separated when they are detached in the electric pricipitator thus constituted, they can be simply washed and, since they are integrally constituted when fitted in the casing, air is not leaked and the collection of dust can efficiently be performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrostatic precipitator constructed by inserting and fixing a filter, an ionizer and a collector in a casing.

[0002]

2. Description of the Related Art Conventionally, as an electrostatic precipitator of this type, an ionizer and a collector are integrally formed,
Those configured to separate are known.

[0003]

The one in which the ionizer and the collector are integrally formed requires a small number of parts, the cost is low, the air flow is good, and the collecting efficiency is improved, but the cleaning and There is a problem that maintenance is difficult.

In addition, although the ionizer and the collector are separated from each other, the cleaning and maintenance are excellent, but since air leaks from the joint between the ionizer and the collector,
There is a problem that the air flow is easily dispersed, it is difficult to improve the collection efficiency, and the cost is increased.

Further, the collector is provided with alternating positive and negative electrode plates for repelling and collecting the particles charged by the ionizer, and these electrode plates are provided with escape holes and fixing holes for passing the electrode rods, An electrode rod is passed through these escape holes and fixing holes and fixed by the fixing holes.

However, in such a collector, there is a drawback that the collected matter adheres to the circumferential portion of the escape hole of the electrode to cause insulation failure, and there is a burr on the circumferential portion of the escape hole of the electrode. As a result, spark discharge is generated, and in order to prevent this spark discharge, it is necessary to clean the burr, which is a troublesome task.

[0007]

According to the present invention, an air inlet and an air outlet are provided, a fan is provided inside the vicinity of the air outlet, and a first frame portion is provided near the air inlet.
A casing provided with a second frame portion adjacent to the first frame portion, a third frame portion adjacent to the second frame portion, and a primary filter for inserting and fixing the casing into the first frame portion. And an ionizer and a collector inserted into and fixed to the second frame portion, and a rear filter inserted into and fixed to the third frame portion.

[0008]

In the present invention, the casing is provided with the first frame portion, the second frame portion, and the third frame portion, the primary filter is inserted and fixed in the first frame portion, and the ionizer is attached to the second frame portion. By inserting and fixing the collector and the collector, and inserting and fixing the rear filter in the third frame portion, the primary filter, the ionizer, the collector, and the rear filter can be easily attached and detached.

When the ionizer and the collector are inserted and fixed in the second frame portion of the casing, they are integrally constructed, and when they are taken out from the casing, they can be separated from each other. Therefore, cleaning and maintenance of the ionizer and the collector are performed. It has excellent properties.

Further, the positive and negative electrodes of the collector have the same shape with notches provided at the corners of one pair, and the corners of the other pair are fixed at equal intervals by an electrode rod and a fixing rod. Therefore, it is possible to reduce the labor for deburring the escape hole without providing the escape hole.

[0011]

1 is a perspective view of a casing of an electrostatic precipitator according to an embodiment of the present invention, and FIG. 2 is a perspective view of the casing of FIG. 1 seen from the opposite side. The casing 1 has an air intake port at one end. 2 is provided, an air discharge port 3 is formed on the upper inclined surface at the other end, and a fan (not shown) for discharging air is mounted below the air discharge port 3.

An opening / closing lid 4 is provided on the side surface of the casing 1, a first frame portion 5 is provided inside the opening / closing lid 4 near the air intake port 2, and the first frame portion 5 is also provided. Is provided with a second frame portion 6, a third frame portion 7 is provided adjacent to the second frame portion 6, and a drain 8 is attached to a lower portion inside the casing 1. Further, a switch 9 is mounted on the side of the casing 1, and a power cord 10 and an earth cord 11 for supplying electricity to the fan from the lower part of the end of the casing 1 are provided.

FIG. 3 is a perspective view of the primary filter, the ionizer, the collector, and the rear filter which are inserted into the casing of FIG. 1, and the primary filter 12 is inserted and fixed in the first frame portion 5 of the casing 1. The grip 12a is provided at the end of the casing, and the rear filter 13 is also attached to the casing 1
The grip portion 13a is provided so as to be inserted and fixed to the third frame portion 7.

Further, the ionizer 14 inserted between the primary filter 12 and the rear filter 13 is a fixing plate 15.
Support insulating members 16 and 17 are fixed above and below, respectively, and support electrodes 18 and 19 are attached to these supporting insulating members 16 and 17, respectively.
Is fixed, a plurality of discharge lines 20 are mounted between the support electrodes 18 and 19, and negative electrode plates 21 that receive corona discharge are mounted between the discharge lines 20.

The collector 22 has end support plates 23, 2
4 is fixed by a fixing member 25, and positive electrode plates 26 and negative electrode plates 27 are alternately mounted between the end support plates 23 and 24 at equal intervals.

The positive and negative electrode plates 26 and 27 are provided with cutouts 26a and 27a at a pair of opposite corners, and another pair of opposite corners without the cutouts 26a and 27a. The electrode rods 28 and 29 and the fixing rods 30 and 31 are inserted into the holes formed in 26b and 27b to fix the positive and negative electrode plates 26 and 27 at equal intervals.
9. The ends of the fixing rods 30 and 31 are fixed outside the end support plates 23 and 24 by the electrode portions 32 and 33 and the nuts 34 and 35.

The end support plates 23 and 24 to which the positive and negative electrode plates 26 and 27 of the collector 22 are fixed are the upper and lower bent portions 15a of the fixed plate 15 of the ionizer 14.
The ionizer 14 and the collector 22 are formed integrally with each other by inserting the connecting member 36 into the cutout portion 15c provided in the lower bent portion 15b, which is inserted between the collector 2 and the collector 2.
An electrode member (not shown) is inserted through the electrode application hole 37 provided in the second end support plate 24 so as to be connected to the support electrode 18 of the ionizer 14 so that a high voltage is supplied to the support electrode 18. The ionizer 14 and the collector 22, which are configured as described above and are integrated, are inserted into and fixed to the second frame portion 6 of the casing 1.

With this structure, the primary filter 12 is inserted into the first frame portion 5 of the casing 1, the ionizer 14 and the collector 22 are inserted into the second frame portion 6, and the third frame portion is inserted. 7, the rear filter 13 is inserted,
When the opening / closing lid 4 is closed and the fan is driven, the particles entering by the ionizer 14 are charged by the corona discharge by the discharge wire 20, and at the collector 22,
The fine particles charged in the positive electrode plate 26 and the negative electrode plate 27 are collected by the Coulomb force.

In the present invention, the casing 1 is thus provided with the first, second and third frame portions 5, 6 and 7, and the primary filter 12, the ionizer 14 and the collector 22, and the rear filter 13 are respectively provided in the casing 1. 1, second, third frame portion 5,
Since it is inserted and fixed in Nos. 6 and 7, the primary filter 1
2. The ionizer 14, the collector 22, and the rear filter 13 can be easily attached and detached, and cleaning and maintenance can be easily performed.

The end support plates 23, 2 of the collector 22 are also provided.
By fixing the ionizer 14 to 4, the ionizer 14 and the collector 22 are integrated when they are inserted and fixed to the second frame portion 6 of the casing 1, and easily separated when taken out from the casing 1. You can

The positive electrode plate 26 and the negative electrode plate 27 of the collector 22 are formed in the same shape, and one of them is rotated by 180 degrees and fixed, whereby the electrode plates 26 and 27 are fixed to the electrode rods 28 and 29. The fixed rods 30 and 31 may be arranged at a predetermined interval.

The ionizer 14 and the collector 2
When the two are integrated, the ends of the support electrodes 18 and 19 and the end support plate 24 may approach each other to cause a discharge, so that the discharge support holes 38 and 39 are formed in the end support plate 23. Then, the support electrodes 18, 19 are formed at the centers of these discharge prevention holes.
Is arranged so that the discharge between the support electrodes 18, 19 to which a high voltage is applied and the end support plates 23, 24 is prevented.

[0023]

As described above, in the electrostatic precipitator of the present invention, the primary filter, the ionizer and the collector, and the rear filter can be freely attached to and detached from the first, second and third frame portions of the casing. It is easy to clean and maintain, and the ionizer and the collector are attached together and can be easily separated when taken out. Therefore, the cleaning and maintenance can be performed easily. By making the positive and negative electrode plates the same shape, it is simple and easy to finish, it is easy to install, and since there is no escape hole in the positive electrode plate, it is possible to prevent spark discharge due to burr There are advantages.

[Brief description of drawings]

FIG. 1 is a perspective view of a casing of an electrostatic precipitator according to an embodiment of the present invention.

FIG. 2 is a perspective view of the casing of FIG. 1 viewed from the opposite side.

FIG. 3 is a primary filter mounted on the casing of FIG.
FIG. 6 is a perspective view of an ionizer, a collector and a rear filter.

FIG. 4 is a side view in which a part of the ionizer and the collector of FIG. 1 is cut away.

[Explanation of symbols]

 1 Casing 5 1st frame part 6 2nd frame part 7 3rd frame part 12 Primary filter 13 Rear filter 14 Ionizer 20 Discharge line 22 Collector 26, 27 Electrode plate

Claims (3)

[Claims] 1. An air inlet and an air outlet are provided, a fan is provided inside the vicinity of the air outlet, a first frame portion is provided near the air inlet, and the first frame portion is adjacent to the first frame portion. A casing provided with a third frame portion adjacent to the second frame portion, a primary filter inserted into and fixed to the first frame portion, and the second frame portion. An electrostatic precipitator including an ionizer and a collector that are inserted into and fixed to the third frame, and a rear filter that is inserted into and fixed to the third frame. 2. The electrostatic precipitator according to claim 1, wherein the ionizer inserted into and fixed to the second frame portion and the collector can be separated when they are removed. 3. The collector is provided with a cutout part which is partially cut off at one corner of a pair of opposing rectangular electrode plates, and a hole is opened at the other corner to pass the electrode plate through the electrode plate. Two sets of electrodes are fixed at fixed intervals and fixed so that the electrode rod of one electrode is located in the notch of the other electrode,
The electrostatic precipitator according to claim 1, wherein the electrode plates of the one electrode are inserted and fixed at equal intervals between the electrode plates of the other electrode.