JPH0611112Y2 - Ionizer for electric dust collector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to an ionizer for an electrostatic precipitator used in an air cleaner.

[Prior Art] An electrostatic precipitator includes an ionizer that charges dust particles in the air passing through the inside of the machine, and a collector that collects charged dust particles. The ionizer has a discharge electrode and a ground electrode provided in its frame. The collector is composed of a large number of ground electrodes and high-voltage electrodes which are alternately installed on the frame at intervals.

In the conventional ionizer, a frame body, a plurality of discharge electrodes, and a plurality of ground electrodes are separately manufactured, and these parts are assembled.

[Problems to be Solved by the Invention] However, the conventional ionizer has a large number of parts, and accordingly, the number of assembling steps of the ionizer is large, which causes a problem that the production efficiency of the air cleaner is reduced accordingly. Further, during assembly, it is difficult to accurately position each discharge electrode so as to reach the center of the ground electrode.

An object of the present invention is to provide an ionizer for an electrostatic precipitator that solves the above-mentioned problems, is easy to assemble accurately, and has good discharge efficiency.

[Means for Solving the Problems] In order to achieve the above-mentioned object, an ionizer of an electrostatic precipitator according to the present invention cuts and raises a plurality of strip-shaped ground electrode plates in a direction perpendicular to an inner surface of a front plate. A metal frame main body and a metal base plate attached to the front plate of the frame main body via an electrically insulating insulator, and the metal base plate has a center between the ground electrode plates. A plurality of discharge electrode plates to be inserted at equal intervals are cut and raised in the direction perpendicular to the front plate, and the tip positions of these discharge electrode plates are positioned at the approximate center in the depth direction of the ground electrode plate,
Air containing dust particles is circulated from the front plate toward the metal substrate.

[Embodiment] The present invention will be described in detail based on an illustrated embodiment.

In the drawings, reference numeral 1 denotes a frame body of an ionizer, which includes an upper plate 2 for covering an upper surface, a lower plate 3 for covering a lower surface, side plates 4, 5 for covering both left and right side surfaces, and a front plate for covering a front plate. 6
And consists of. The ground electrode plate 7 of the ionizer is directed from the front plate 6 to the inside of the frame body 1 and at both sides on both the left and right sides at regular intervals in the vertical direction. Is formed by cutting and raising the ground electrode plate 7 so that the hole 8 formed in the front plate 6 serves as an air inlet. 9,
Reference numeral 10 denotes a connecting plate for connecting the ionizer to the collector, which extends downward and upward from the tips of the projecting plates 11 and 12 that extend in series rearward from the rear edge of the upper plate 2 and the lower plate 3, respectively. The frame body is formed by providing bent folding plates 13 and 14, and these folding plates 13 and 14 are slidably engaged with engagement grooves provided on both upper and lower surfaces of the frame of the collector. Connect 1 to the collector side.

Then, the frame body 1, the ground electrode plate 7, the connecting plates 9, 1
0 is integrally formed by pressing one stainless plate or another metal plate. Fifteen, one
Reference numeral 6 denotes a through hole formed in the frame main body 1 for attaching the discharge electrode plate. As shown in FIG. Insulators 17 and 18 having an electric insulation property are fixed to the inside of 6.

Further, between the tips of the insulators 17 and 18, a metal substrate 22 is provided by cutting and raising a plurality of long piece-shaped discharge electrode plates 21 accurately positioned between the ground electrode plates 7 toward the front plate 6. Then, it is fixed to the insulators 17 and 18 with fasteners 23 and 24 such as screws. The discharge electrode plate 21 is cut and raised from the metal substrate 22 in the same direction as the ground electrode plate 7, and the position of the discharge portion at the tip is the depth of the ground electrode plate 7 as shown in FIG. It is arranged to be located substantially in the center of the direction.

In addition, reference numerals 25 and 26 are notched holes formed in the projecting plate 12, and are used for passing the high voltage side lead wire of the high voltage power source connected to the metal substrate 22. Reference numerals 27 and 28 denote insertion portions formed by cutting and raising from the front plate 6 so that the upper left and right corners of the prefilter attached to the front surface of the frame body 1 can be inserted.
Reference numeral 9 is a hooking portion projecting from the front plate 6 so as to lock the central portion of the lower side of the prefilter, and reference numerals 30 and 31 are projecting pieces cut and raised from the front plate 6 so as to press the lower portions of the left and right side edges of the prefilter. , 32 is a handle attached to the center of the upper portion of the front plate 6, 33 is a locking piece cut and raised from the projecting plate 11 so as to lock the frame body 1 to the collector frame when the frame body 1 is completely connected to the collector. is there.

In a state where the frame body 1 and the metal substrate 22 are coupled via the insulators 17 and 18, as shown in FIG. 5, the discharge electrode plate 2 is placed at the center between the ground electrode plates 7 in the vertical direction and the depth direction.
1 is naturally positioned so that the tip discharge part is located. As a result, it is possible to effectively discharge electricity from the discharge portion to the surrounding ground electrode plate 7, and it is possible to efficiently charge the dust particles in the air introduced from the hole portion 8 and passing near the discharge portion.

Since the frame body 1 and each ground electrode plate 7 are integrally formed of the same metal plate, if a part of the frame body 1 is grounded, each ground electrode plate 7 is naturally grounded.

[Effects of the Invention] As described above, the ionizer of the electrostatic precipitator according to the present invention has the tip discharge portion of the discharge electrode plate at each center position between the ground electrode plates when the frame body and the metal substrate are connected. Since it can be positioned accurately, assembly and adjustment are extremely easy, and discharge efficiency is improved.

[Brief description of drawings]

The drawings show an embodiment of an ionizer for an electrostatic precipitator according to the present invention. Fig. 1 is a front view of a frame, Fig. 2 is a side view,
FIG. 3 is a plan view, FIG. 4 is a bottom view, and FIG. 5 is a cross-sectional view showing a state where the frame main body and the metal substrate are combined. Reference numeral 1 is a frame body, 6 is a front plate, 7 is a ground electrode plate,
8 is a hole, 9 and 10 are connecting plates, 17 and 18 are insulators, 21
Is a discharge electrode plate, and 22 is a metal substrate.

Claims (1)

[Scope of utility model registration request] 1. A metal frame body having a plurality of strip-shaped ground electrode plates inwardly cut and raised on a front plate, and an electrically insulating body facing the front plate of the frame body. A metal substrate attached via an insulator, and a plurality of discharge electrode plates to be inserted at equal intervals at the center positions between the ground electrode plates are cut in a direction perpendicular to the front plate on the metal substrate. It is characterized in that the tip end positions of these discharge electrode plates are positioned substantially in the center of the ground electrode plate in the depth direction, and air containing dust particles is circulated from the front plate toward the metal substrate. Ionizer for electric dust collector.