JPH08131888A - Electrostatic precipitation element - Google Patents

Abstract

PURPOSE: To lessen the deformation, shaking, etc., of element pieces constituting respective plates and to maintain the good parallel spacings therebetween by adopting so-called paper elements and adequately adapting these elements to throw-away specifications. CONSTITUTION: Respective element pieces 10, 20 are held in spacing maintaining holders 8 having recessed parts 81 and projecting parts 82 having the width corresponding to the inter-plate spacings in the parts to be provided with first and second band-shaped connecting pieces 71, 72 to directly determine the inter- plate spacings, by which the parallel spacings between the respective element pieces 10, 20 are well maintained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrostatic precipitator element which is used by incorporating it into an air cleaner, an air conditioner or the like.

[0002]

2. Description of the Related Art Conventionally, generally, an electrostatic precipitating element has an ionizing section for positively or negatively charging dirt particles in the air,
The dust collecting part collects and attaches the charged dirt particles. A so-called paper element, in which the electrode pattern of the dust collecting portion is printed on the mount, is used for the dust collecting portion to which the dirt particles adhere, so that the cost can be significantly reduced and the disposable cleaning does not require regular cleaning. It is designed to be possible and convenient for users. There are many devices that have been devised in this way, such as Japanese Utility Model Publication No. 1-174056.

Further, the dust collecting portion to which the dirt particles are adhered is such that the dust collecting portion first electrode having positive or negative one side polarity and the dust collecting portion second electrode having the other side polarity are alternately arranged in parallel. The electrode has a so-called parallel plate electrode structure and the parallel spacing between the electrode plates is generally held by a spacing holder. A typical example thereof is disclosed in Japanese Patent Application Laid-Open No. 5-261313.
12, has a structure having a narrow slit S for receiving the plate thickness of each of the electrode plates A and B, and a protrusion T protruding between the electrode plates. In this way, the electrode plates A and B are sandwiched in the slits S in the plate thickness direction, the positions of the electrode plates A and B are determined by the slits S, and the parallel intervals are maintained.

[0004]

However, since the spacing holder H shown in FIG. 12 sandwiches the electrode plates A and B in the plate thickness direction with the slits S, it is mounted on a paper element having low rigidity. At the same time, there is a problem that the mount is deformed, and the thin plate S is placed inside the narrow slit S.
Since the electrode plates A and B are loose in the slit S, or the electrode plates A and B easily fall out of the slit S, the parallel distance between the electrode plates A and B is well maintained. There is a difficult problem to solve.

The main object of the present invention is to employ a so-called paper element and adapt it well to a disposable specification, while the element pieces constituting each electrode plate are less likely to be deformed or loosened, and the parallel spacing thereof is kept good. The point is to provide an electrostatic precipitator element that can be used.

[0006]

In order to achieve the above-mentioned main object, the invention according to claim 1 is formed by patterning electrodes 1 and 2 of one side polarity on a mount as shown in FIG. The first element piece 10 and the second element piece 20 formed by patterning the electrode 3 of the other side polarity on the mount are alternately connected through the bent portion 7, and as shown in FIG. These element pieces 10 and 20 are placed in a gap between the recessed portion 81 which receives the end portions of the adjacent element pieces 10 and 20 with the bent portion 7 sandwiched between them and the adjacent element pieces 10 and 20 in the non-intervening portion of the bent portion 7. It is configured to be held by the interval holding holder 8 having the protruding portion 82 that projects.

According to the second aspect of the present invention, in addition to the first aspect of the invention, in order to reliably prevent the element pieces 10 and 20 and the gap holding holder 8 from coming off,
As shown in FIG. 5, the element pieces 10, 20 of the convex portion 82
The projection 83 on the contact portion with respect to the element pieces 10, 20
The receiving holes 30 for receiving the projections 83 are respectively provided in the above.

The invention according to claim 3 is the same as the invention according to claim 1 or 2, in which a gap is secured in both the vertical direction and the width direction of each element piece 10 and 20, and each element piece 10 and 20 is secured. In order to maintain a good parallel spacing, the bent portion 7 is bent in parallel along one side on the upper and lower sides in the flow direction of the air, and the first element piece 10 and the adjacent second element piece 20 are continuously connected. A plurality of first strip-shaped connecting pieces 71, and a plurality of second element pieces 20 and a plurality of first element pieces 10 in the next row, which are bent in parallel along one side on the other side in the direction of air flow The second holding member 8 is composed of the second strip-shaped connecting pieces 72, and the space holding holder 8 has a narrow shape corresponding to the connecting pieces 71, 72.

According to a fourth aspect of the present invention, in the third aspect of the invention, the entire width of each of the element pieces 10 and 20 orthogonal to the air flow direction is opened laterally, and irradiation with an ultraviolet lamp for sterilization is performed. In order to favorably perform the above, as shown in FIG. 4, the convex portion 82 has a missing portion 84 for laterally opening the gap between the element pieces 10 and 20 at the protruding portion of the convex portion 82.
Is provided.

According to a fifth aspect of the present invention, in the third or fourth aspect of the present invention, the element pieces 10 and 20 are held in a frame shape, and the shape of the entire element pieces is also excellently maintained.
As shown in FIG. 6, a butt piece 85 is provided at each end of the space holder 8 located on the side of the first strip-shaped connecting piece 71 and the space holder 8 located on the side of the second strip-shaped connecting piece 72. Through the above, the configuration is such that they are butted against each other.

According to a sixth aspect of the present invention, in the fifth aspect of the invention, the butt piece 85 is provided as shown in FIG.
Is composed of a first member 85a extending from both ends of the spacing holder 8 toward the abutting portion, and a second member 85b extending outward from the first member 85a. End plate 90 that bundles 85b and 85b together and arranges them outside the element pieces 10 and 20.
It is configured to be fitted in the fitting hole 910 provided in 0.

[0012]

In the invention described in claim 1, as shown in FIG.
The first element piece 10 formed by patterning the electrodes 1 and 2 of one side polarity on the mount, and the second element piece 20 formed by patterning the electrode 3 of the other side polarity on the mount, the bent portion 7
And the so-called paper element is adopted, the overall cost can be greatly reduced and the disposable specification can be well adapted. Moreover, as shown in FIG. 6, the element pieces 10 and 20 have the bent portion 7
Element pieces 10, 20 sandwiching (71, 72) and adjacent to each other
Recessed portion 81 for receiving the end portion of the bent portion and the bent portion 7 (71, 72)
Is held by the spacing holder 8 having a convex portion 82 projecting into the gap between the adjacent element pieces 10 and 20 in the non-intervening portion of the element pieces 10 and 20.
1, 72), the interval is directly determined by the concave portion 81 and the convex portion 82 having a width corresponding to the electrode plate spacing, so that the parallel spacing between the element pieces 10 and 20 is maintained well. be able to.

According to the second aspect of the present invention, as shown in FIG. 5, the projection 83 provided on the convex portion 82 includes the element piece 10,
Since it is received in the receiving hole 30 provided in 20, it is possible to reliably prevent the element pieces 10 and 20 from coming off between the interval holding holder 8.

According to the third aspect of the present invention, the first strip-shaped connecting piece 71 constituting the bent portion 7 is bent in parallel along one side on the upper and lower sides in the air flow direction, and the first element piece 1 is formed.
0 and the second element piece 20 adjacent to each other are intermittently continuous, and the space holder 8 has a narrow shape corresponding to the first strip-shaped connecting piece 71. A space can be secured between the strip-shaped connecting pieces 71, 71. Similarly, the second strip-shaped connecting piece 72 that constitutes the bent portion 7 is bent in parallel along one side on the upper and lower sides in the air flow direction, and the second element piece 20 and the first element piece 10 in the next row are formed. The space holding holder 8 has a plurality of second strip-shaped connecting pieces 72.
Since it has a narrow shape corresponding to, a space can be secured between the adjacent second strip-shaped connecting pieces 72, 72. For this reason,
An air passage can be well secured in the vertical direction of the element pieces 10 and 20, and both ends in the width direction of the element pieces 10 and 20 which are not faced by the strip-shaped connecting pieces 71 and 72 are opened, so that irradiation of ultraviolet rays for sterilization and the like can be performed. It will be possible. In this way, while the gaps can be secured in both the vertical direction and the width direction of each element piece 10 and 20, the spacing holder 8 having a shape corresponding to each strip-shaped connecting piece 71 and 72 allows the parallel operation of the adjacent element pieces 10 and 20. The space can be maintained well.

According to the fourth aspect of the invention, the convex portion 82 of the spacing holder 8 is interposed in the gap portion in the width direction of the element pieces 10 and 20 orthogonal to the air flow direction so as to partially close the gap. However, as shown in FIG. 4, the convex portion 82 is provided with the missing portion 84, so that the void portion in the width direction of the element pieces 10 and 20 is opened almost all over, and the ultraviolet rays for sterilization are used. It is possible to satisfactorily illuminate the lamp.

According to the fifth aspect of the invention, the spacing holder 8 located on the side of the first strip-shaped connecting piece 71 and the spacing holder 8 located on the side of the second strip-shaped connecting piece 72 are provided at both ends thereof. Since the element pieces 10 and 20 are abutted on each other via the abutting piece 85, and the element pieces 10 and 20 are held in a frame shape via a pair of upper and lower spacing holders 8 and 8, the overall shape can be well maintained.

According to the sixth aspect of the present invention, the end plates 90 for bundling the second members 85b, 85b provided in the upper and lower spacing holders 8 and arranging the second members 85b, 85b outside the element pieces 10, 20 are provided.
With a simple configuration in which it is simply fitted into the fitting hole 910 provided in 0, the overall shape of the frame can be kept good.

[0018]

EXAMPLE FIG. 11 is a ceiling cassette type air purifier in which two electrostatic precipitating elements 500 according to the present invention are incorporated, and has a decorative plate 501 having a suction port 502 and a blow port 503 at the bottom. Inside the main body casing 504, an antibacterial prefilter 505 for removing relatively large dust in advance,
The dust collecting elements 500, 500 and the respective elements 5
Ultraviolet lamps 506 and 50 for sterilizing irradiation from the side of 00
6, an ozone decomposition catalyst 507 made of activated carbon and the like, and a fan 508 for circulation are provided.

As shown in FIG. 1, the electrostatic precipitator element 500 includes a first element piece 10 having electrodes 1 and 2 which are connected to a ground on the positive side with respect to a negative high voltage,
A plurality of second element pieces 20 having electrodes 3 connected to a negative high voltage are alternately arranged in parallel. The first element piece 10 has a pair of left and right ionization section counter electrodes 1 and 1 on the upstream side in the air flow direction, and a linear dust collecting section first electrode 2 on the slightly downstream side thereof. ，
Both 1 and 2 are patterned on both the front surface and the back surface of the mount P by double-sided printing of a carbon-containing conductive paint. The second element piece 20 is the first element piece 1
0 has its front surface facing the back surface of 0, and further has a line-shaped dust collecting portion second electrode 3 further downstream of the dust collecting portion first electrode 2. For the above, a pattern is formed by double-sided printing of a conductive paint containing carbon. 2h and 3h are through-holes that are opened before double-sided printing of the conductive paint. The double-sided printing of the conductive paint is performed on the mount P in which the through-holes 2h and 3h are opened, and the electrodes on the front and back sides are printed. They are in conduction with each other.

The left and right ionization section counter electrodes 1 and 1 and the line-shaped dust collecting section first electrode 2 in the first element piece 10 are connected to each other on both the front surface side and the back surface side of the mount P by a short connecting pattern 4. 4 are connected to each other. The connecting patterns 4 and 4 are also formed by double-sided printing of a conductive paint containing carbon.

As shown in FIG. 2, the mount P is made of a long sheet of electrically insulating paper which has a thickness of several millimeters to several millimeters, for example, 0.38 mm, and is long in the vertical direction.
The element pieces 10 and 20 are alternately and continuously formed by bending the element pieces 10 and 20 in an orthogonal manner in accordance with a mountain fold line shown by a dotted line and a valley fold line shown by a one-dot chain line in FIG. The distance between the adjacent element pieces 10 and 20 is set based on the length of the orthogonal bent portion 7.

The orthogonal bending portion 7 is mountain-folded along one side of the first element piece 10 located on the upstream side in the air flow direction, and the adjacent second element pieces 20 are continuously connected in the width direction of the mount P. A plurality of first strip-shaped connecting pieces 71,
The second element piece 20 located on the downstream side in the air flow direction
A plurality of second strip-shaped connecting pieces 72, which are valley-folded along one side and continuously connect the adjacent first row element elements 10 in the next row in the width direction of the mount P. The first strip-shaped connecting piece 71 is made up of three pieces including left and right end pieces 71a, 71b and an intermediate middle piece 71c. Similarly, the second strip-like connecting piece 72 is the left and right end pieces 72a in the width direction. 72b and an intermediate intermediate piece 72c.

Further, at the end of each bending line, a round hole 70 consisting of small punch holes is opened in order to facilitate bending and to make a right angle.

Further, on the upstream side in the air flow direction of each of the element pieces 10 and 20, a cut line 71d is formed between the left end piece 71a and the intermediate piece 71c of the first strip-shaped connecting piece 71. , And a cut line 71e inserted between the right end piece 71b and the intermediate piece 71c, each having a width corresponding to the span between both ends of each of the cut lines 71d and 71e. First flat pieces 73, 73 forming the same plane as the element piece 10 are provided. Similarly, on the downstream side in the air flow direction of each of the element pieces 10 and 20, the score line 7 that is inserted between the left end piece 72a and the intermediate piece 72c of the second strip-shaped connecting piece 72.
2d, and a cut line 72e inserted between the right end piece 72b and the intermediate piece 72c, each having a width corresponding to the span between both ends of each cut line 72d, 72e, Second flat pieces 74, 74 forming the same plane as the one element piece 10 are provided.

The first flat pieces 73, 73 have a relatively large vertical length, and the cut lines 71d, 71e corresponding to these portions cut into the flat surface of the second element piece 20. As described above, the stove portion 23 having a size corresponding to the extension portion 73a provided on the upper end of the first flat piece 73 is provided on one side of the second element piece 20 on the upstream side in the air flow direction.

Then, the counter electrode 1 facing the ionization portion is patterned on the first flat piece 73 thus secured.

Although the second flat piece 74 is provided on the same plane as the first element piece 10, it may be provided on the same plane as the second element piece 20.

Next, the terminal structure of each of the electrodes 1 to 3 will be described. The common terminal portion 5 of the ionization portion counter electrode 1 and the dust collecting portion first electrode 2 included in the first element piece 10 is taken out from the left side of the dust collecting portion first electrode 2, and the left side in the width direction of the mount P. The left end piece 71a of the first strip-shaped connecting side 71 located on the upper side in the height direction is patterned.
Also, the second electrode 3 of the dust collecting portion provided on the second element piece 20.
The terminal portion 6 is taken out from the right side and is patterned on the right end piece 72a of the second strip-shaped connecting side 72 located on the right side in the width direction of the mount P and on the lower side in the height direction. still,
Each of these terminal portions 5 and 6 is formed by double-sided printing of a conductive paint on the mount P, similarly to the electrodes 1, 2 and 3.

Further, the terminal portions 5 and 6 are formed by interposing the end pieces 71a and 72b forming the terminal portions 5 and 6 on the surfaces of the first element piece 10 and the second element piece 20 located on both sides to form a pattern. To improve the contact with the conductive cushion 91 described later.

Then, after adopting such a terminal structure, the pattern length on the right side of the dust collecting section first electrode 2 is shortened,
A span is secured between the pattern end portion 21 on the side opposite to the terminal portion of the first electrode 2 and the terminal portion 6 on the right side, which is the opposite pole to the first electrode 2, to prevent a flashover. Similarly, the pattern length on the left side of the second electrode 3 of the dust collecting portion is shortened so that the pattern end 31 on the side opposite to the terminal of the second electrode 3 and the second electrode 3
And a left terminal portion 5 which is the opposite pole, a span is secured to prevent flashing.

In this way, the mount P of FIG. 2 constructed as described above is folded along the mountain fold line and the valley fold line, and as shown in FIG. 1, the element pieces 10 and 20 are arranged alternately in parallel. is there.

At the time of this bending, or at the time of holding the state after the bending, a jig 600 as shown in FIG.
To use. The jig 600 includes a substrate 601 and a tall support plate 602 that receives the back surface of the first strip-shaped connecting piece 71.
The short side support plates 603 for escaping the second flat pieces 74 are alternately arranged side by side, and the perpendicularity of the bent portions of the element pieces 10 and 20 and the parallel spacing of the element pieces 10 and 20 can be excellently obtained. I am trying.

In the state shown in FIG. 3, the first strip-shaped connecting piece 71 is sandwiched between the recessed portion 81 for receiving the upper ends of the adjacent element pieces 10 and 20, and the first strip-shaped connecting piece 71 is adjacent to the recessed portion 81. The interval holding holder 8 having a convex portion 82 that protrudes into the gap between the matching element pieces 10 and 20 is formed, and this holder 8 is inserted from above.

The holder 8 includes left and right end pieces 71a and 71b and a middle piece 71c of the first strip-shaped connecting piece 71.
Corresponding to the above, three pieces are inserted from the upper part, and each holder 8 is provided with a narrow main body 80 corresponding to each connecting piece 71a, 71b, 71c.

After the holder 8 is inserted into the first strip-shaped connecting piece 71 side, the element is removed from the jig 600, and the second strip-shaped connecting piece 72 side on the opposite side is similarly left and right. The three spacing holders 8 are inserted in correspondence with the end pieces 72a, 72b and the intermediate piece 72c.

At least of the space holders 8,
End pieces 71a, 72 for forming the terminal portions 5, 6 on their end faces
As for the element to be inserted into the b, as shown in FIG.
Holds a conductor 9 made of a long aluminum plate or the like and a conductive cushion 91 made of conductive urethane or the like extending in the juxtaposed direction. The conductive cushion 91 is projected from the end surface of the recess 81 of the spacing holder 8, so that when the spacing holder 8 is inserted into the element side, the terminal portions 5 and 6 are satisfactorily pressed against the conductor 9 side. It has become.

In order to make the parts common, the holder 8 which is inserted into the end pieces 71b, 72a and the intermediate pieces 71c, 72c having no terminals is similarly provided with the groove 8 in the main body 80 thereof.
0a is provided. In this case, a dummy cushion may be inserted in the groove 80a, or in order to eliminate the distinction at the time of assembly and to facilitate the manufacturing control, the terminal portions 5, 6
The configuration may be exactly the same as the insertion side.

The convex portion 82 provided on the space holding holder 8 is
Comprising a pair of convex pieces 82a, 82b sandwiching the groove 80a,
The convex pieces 82a, 82b are provided on the convex pieces 82a, 82b.
Is provided with a slit-shaped missing portion 84 for laterally opening the gap between the element pieces 10 and 20 at the protruding portion of
Irradiation of the ultraviolet lamp 506 from the side shown in FIG. 11 is made to reach the entire gap satisfactorily. Also, each convex piece 82
At the tips of a and 82b, inclined cut portions 82c are provided to improve the insertability of the element pieces 10 and 20 into the gaps.

As shown in FIG. 5, projections 83, 83 are provided on the contact portions of the projections 82 of the spacing holder 8 with the element pieces 10, 20, and the element pieces 10, 20 are provided with the projections 83, 83. It is also preferable to provide a receiving hole 30 for receiving 83 so as to prevent the holder 8 and the element pieces 10 and 20 from coming off and to maintain the inserted state of both of them well.

As shown in FIG. 6, butt pieces 85 and 85 are provided at both ends of the space holder 8, and the upper and lower holders 8 and 8 are butted to each other through the butt pieces 85 to attach the element. It is formed in a box shape to retain its shape.

The abutting piece 85 is composed of a first member 85a extending from both ends of the spacing holder 8 toward the abutting portion, and a second member 85b extending outward from the first member 85a. Second member 8 prepared for 8
5b and 85b are bundled and fitted into a fitting hole 910 provided in the end plate 900 arranged outside the element pieces 10 and 20.

The finished product shown in FIG. 6 is essentially the ionization unit 1 in the dust collection unit 200 having the electrodes 2 and 3 on the dust collection unit side.
The counter electrode 1 of the ionization section constituting the unit 00 is integrally modularized. Then, the modularized finished product is, as shown in FIGS. 7 and 8, an air inlet portion 40.
1 and an outlet 402, and is supported by a box-shaped frame 400 framed by rivets 410.

In FIGS. 7 and 8, reference numeral 1A is a discharge electrode that constitutes the ionization section 100 by facing the ionization section counter electrode 1, and is located upstream of the second element piece 20 and adjacent to the first element piece. It is arranged on the center line of 10, 10. Further, the blade portion 1a having a large number in the width direction at the end
To the ionization part counter electrode 1.

Supporting portions 101 are provided at the four corners of the discharge electrode 1A constituting the ionizing portion 100. Dust collector 200
Of the second members 85b of the butting pieces 85 protruding at all six positions outside the end plate 900, four of the four corners are used as the supporting portions 201. Then, these supporting portions 101, 20
1 is coaxially attached to the four insulating insulators 300 supported at the four corners of the frame 400.

The insulator 300 is entirely formed of an insulating material such as phenol resin, and is composed of a first shaft portion 301 attached to the frame 400 and a second shaft portion 302 coaxially fitted on the first shaft portion 301. ing. Bolts 304 that are screw-fitted to the second shaft portion 302 are embedded in the first shaft portion 301, and bosses 305 that receive the bolts 304 are embedded in the second shaft portion 302. Thirty
The discharge electrode 1A forming the ionization part 100 is sandwiched between the fitting parts of 1,302. A bolt 306 is also embedded in the end of the second shaft portion 302, and the dust collecting portion 200 is attached via a nut 307.

At the lower end of the first shaft portion 301 of the insulator 300,
As shown in FIG. 9, a small-diameter annular recess 303 is provided, and the annular recess 303 is inserted into the U-shaped receiving grooves 403 provided at the four corners of the frame 400.

Next, the dust collecting action will be described with reference to FIG. When air containing fine particles or dirt particles d such as viruses, bacteria, or cigarette smoke enters, the blade portion 1a of the discharge electrode 1A, which has a negative high voltage, and the positive side ionization portion counter electrode 1, Due to the negative corona occurring between them, the dirt particles d are negatively charged. The negatively charged dirt particles d are collected in the dust collecting section first electrode 2 and the second electrode 3.
Due to the action of the electric field between and, it is adsorbed to the first element piece 10 having the positive first electrode 2. Thus
Finally, clean air containing almost no dirt particles d is taken out from the outlet side.

[0048]

According to the invention described in claim 1, by adopting the so-called paper element, the total cost can be greatly reduced and the element piece 10 or 20 can be well adapted to the disposable specification. In the portion where the bent portion 7 is provided, the interval is directly determined by the concave portion 81 and the convex portion 82 having a width corresponding to the electrode plate distance, so that the parallel distance between the element pieces 10 and 20 is maintained well. be able to.

According to the second aspect of the present invention, the convex portion 82 and the receiving hole 30 thereof can surely prevent the element pieces 10 and 20 and the gap holding holder 8 from falling off.

According to the third aspect of the present invention, the element pieces 10 and 20 have a shape corresponding to the first and second belt-like connecting pieces 71 and 72 while ensuring a space in both the vertical direction and the width direction. The narrow spacing holder 8 can favorably maintain the parallel spacing between the adjacent element pieces 10 and 20.

According to the fourth aspect of the invention, the gap portion 84 in the width direction of the element pieces 10 and 20 can be opened almost entirely by the notch portion 84 provided in the convex portion 82, and irradiation of a sterilizing ultraviolet lamp or the like can be performed. It can be done well.

According to the fifth aspect of the invention, the distance holding holder 8 on the side of the first strip-shaped connecting piece 71 and the second strip-shaped connecting piece 72 are provided.
Since the element holders 10 and 20 are held in a frame shape by vertically abutting the space holding holder 8 on the side through the abutting pieces 85, the overall shape can be maintained well.

According to the sixth aspect of the invention, the second members 85b, 85b of the upper and lower spacing holders 8 are bundled together and simply fitted into the fitting holes 910 provided in the end plate 900. The frame-shaped overall shape can be kept good.

[Brief description of drawings]

FIG. 1 is a perspective view of a main part of an electrostatic precipitating element according to the present invention.

FIG. 2 is a development view of a pattern mount forming the same element.

FIG. 3 is a sectional view showing a first manufacturing process of the element.

FIG. 4 is a perspective view of a main part of the same spacing holder.

FIG. 5 is a sectional view of a main part showing another embodiment of the same spacing holder.

FIG. 6 is a side view showing the second manufacturing process of the element.

FIG. 7 is a sectional view showing an assembled state of the element.

FIG. 8 is a sectional view taken along the line a in FIG.

FIG. 9 is a perspective view of a main part of the insulator portion.

FIG. 10 is a sectional view for explaining the dust collecting action of the element.

FIG. 11 is a cross-sectional view of an air cleaner including the same element.

FIG. 12 is a sectional view of a conventional example.

[Explanation of reference numerals] 1; counter electrode of ionization part, 2; first electrode of dust collecting part, 3; second electrode of dust collecting part, 4; connection pattern, 5, 6; terminal part,
10; first element piece, 20; second element piece,
7; bent portion, 71; first strip-shaped connecting piece, 72; second strip-shaped connecting piece, 8; spacing holder, 81; concave portion, 82; convex portion, 83; protrusion, 84; missing portion, 85; butting piece , 85
a; first member, 85b; second member, 900; end plate, 91
0: Mating hole

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hachiro Kurokawa 1-1, Nishiichitsuya, Settsu-shi, Osaka Daikin Industries, Ltd. Yodogawa Works (72) Inventor Yasuo Sato 1-1, Nishiichitsuya, Settsu-shi, Osaka Daikin Industries Yodogawa Manufacturing Co., Ltd. (72) Inventor Kazuya Okada 1-1 Nishiichitsuya, Settsu-shi, Osaka Daikin Industries Co., Ltd. Yodogawa Manufacturing (72) Inventor Yoshihide Ito Nishiichitsuya, Osaka Prefecture Daikin Industrial Co., Ltd. Company Yodogawa Works

Claims (6)

[Claims] 1. A first element piece (10) formed by patterning electrodes (1, 2) of one side polarity on a mount and a second element piece (10) formed by patterning electrodes (3) of another side polarity on the mount. The element pieces (20) and the element pieces (10, 20) are alternately connected to each other through the bent portion (7).
The bent element (7) and the adjacent element pieces (10,
A recess (81) for receiving the end of 20) and a bend (7)
Adjacent element pieces (10, 2
An electrostatic precipitator element, characterized in that the electrostatic precipitator is held by a space holder (8) having a convex portion (82) protruding into the gap (0). 2. The element piece (10, 2) of the convex portion (82)
0) has a projection (83) at its contact portion and the element piece (10, 20) has a receiving hole (3) for receiving the projection (83).
0) respectively, the electrostatic precipitator element according to claim 1. 3. The bent portion (7) is bent in parallel along one side on the upper and lower sides in the air flow direction, and jumps between the first element piece (10) and the adjacent second element piece (20). A plurality of first strip-shaped connecting pieces (71) continuous to each other
And a plurality of second strip-shaped connections that are bent in parallel along one side of the upper and lower sides in the air flow direction to make the second element piece (20) and the first element piece (10) of the next row continuous in an irregular manner. The electrostatic precipitator element according to claim 1 or 2, which comprises a piece (72), and the spacing holder (8) has a narrow shape corresponding to each connecting piece (71, 72). 4. The projection (82) is provided with a notch (84) for laterally opening the gap between the element pieces (10, 20) at the projecting portion of the projection (82). Electric dust collection element. 5. Both ends of the spacing holder (8) located on the side of the first strip-shaped connecting piece (71) and the spacing holder (8) located on the side of the second strip-shaped connecting piece (72). The electrostatic precipitator element according to claim 3 or 4, which is vertically butted through a butting piece (85) provided at. 6. The butting piece (85) comprises a first member (85a) extending from both ends of the spacing holder (8) toward the butting portion, and a second member extending outward from the first member (85a). (85b), the second member (85b, 85b) provided in the upper and lower spacing holders (8) are bundled together and provided on the end plate (900) arranged outside the element piece (10, 20). The electrostatic precipitator element according to claim 5, which is fitted in a dowel hole (910).