JPH09187676A - Electrostatic air cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance dust collecting performance without tearing dust collection paper by keeping the distance between the tip of a dust collection needle and an electrode plate at a specified interval and vertically fixing detachably a unit in which an ionizing electrode projectingly provided with plural dust collection needles at the back side of a belt-like electroconductive plate and plural ionic needles at the front side respectively is attached. SOLUTION: Upper and lower attaching parts 30, 31 are respectively formed on the bottom of a central front side of a covering plate 7 and on the upper surface of a central front side of a supporting base 1 so that the distance between the tip of each dust collection needle 23 constituting the ionizing electrode 15 and the dust collection electrode plate 8 is kept at a prescribed distance, preferably about 4cm distance and the ionic unit 16 is made attachable/detachable. Since the dust collection electrode plate 8 is attached over the almost whole surface of a vertical surface of the front surface of a dust collection paper fixing plate 2, the surface area is large, and also since the distance from the tip of each dust collection needle 23 to the dust collection paper is about 4cm and always held constant, the collection efficiency of the ionized dust is high. Also since electrode do not strike the dust collection paper strongly, the dust collection paper is not tore.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrostatic air purifying apparatus having an electrode for ionizing particles such as dust and an electrode for adsorbing the ionized particles such as dust. .

[0002]

2. Description of the Related Art Heretofore, as this electrostatic air cleaning device, one disclosed in Japanese Patent Laid-Open No. 2-198650 has been known. In the electrostatic air purifier disclosed in the above-mentioned Japanese Patent Laid-Open No. 2-198650, a lower part of a dust collecting paper container having an ionization electrode (cathode needle), which also serves as a dust collecting needle and an ion needle, is provided on the outer peripheral lower surface. A first dust collecting electrode (anode plate) and a second dust collecting electrode (anode plate) are installed in the middle part with a space between them, and the first and second dust collecting electrodes are connected to each other. A dust-collecting paper called a paper towel is placed on the front surface, and negative and positive high voltages are applied to the ionizing electrode and the first and second dust-collecting electrodes to generate corona discharge, Particles such as negatively ionized dust are attracted to the first and second dust collecting electrodes, the particles are adsorbed to the dust collecting paper, and the particles are collected to clean the indoor air. is there.

[0003]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
In the electrostatic air purifying apparatus disclosed in Japanese Patent No. 650, not the second dust collecting electrode separated from the ionization electrode, but the negative ionized dust or the like on the first dust collection electrode closer to the ionization electrode. Of the particles are attracted, and the particles are adsorbed to the dust collecting paper. That is, the dust collecting paper is contaminated by particles such as dust concentrated and adsorbed on the first dust collecting electrode portion. Since the particles such as dust are conductive substances, the adsorbed particles such as dust become a part of the first dust collecting electrode, and the distance from the ionization electrode to the first dust collecting electrode is The same effect as shortening. Generally, having a distance of about 4 cm from the ionization electrode to the dust collecting electrode is excellent as the dust collecting ability. When the distance is shorter than this, the electrons strongly hit the dust collecting paper and the dust collecting paper is broken. .

Thus, in the conventional electrostatic air purifying apparatus, when the dust collecting paper becomes dirty as described above, the distance from the ionizing electrode to the first dust collecting electrode becomes short, so that the dust collecting ability is reduced. In addition to the inferiority, the electron strongly hits the dust collecting paper, so that the dust collecting paper is broken. Further, since the ionization electrode also serves as a dust collection needle and an ion needle, there is a problem that the amount of generated ions is small.

SUMMARY OF THE INVENTION The present invention is intended to provide an electrostatic air purifier intended to solve the above-mentioned conventional problems.

[0006]

SUMMARY OF THE INVENTION According to the present invention, one dust collecting electrode plate is fixed over substantially the entire wide vertical surface of the front surface of the dust collecting paper fixing plate, and the dust collecting electrode plate is fixed. A dust collecting paper is detachably attached to the front surface by a dust collecting paper stopper, and a plurality of dust collecting needles are provided on the rear side of the belt-shaped conductive plate at the front center of the dust collecting electrode plate of the dust collecting paper fixing plate. In addition, an ion unit formed by mounting an ionization electrode provided by projecting a plurality of ion needles on the front side of the conductive plate is a dust collecting electrode plate from the tip of each dust collecting needle. Means for attaching the dust collecting needle to the dust collecting electrode plate vertically erected and fixed so that the dust collecting needle can be detached and held at a distance of about 4 cm, and with a distance of about 4 cm held over the entire length, Alternatively, a dust collecting paper fixing plate is erected and fixed on the rear upper surface of the support base, and The paper fixing plate includes a substrate having a vertical surface provided on the front surface of the central portion by a non-conductive member, an ion wind rectifying plate having curved surfaces curved inward on both sides of the vertical surface, and the above-mentioned vertical surface having the above-mentioned configuration. It is formed by integrally connecting a supporting base and a cover plate having substantially the same shape, and one dust collecting electrode plate is fixed over substantially the entire vertical surface of the front surface of the dust collecting paper fixing plate,
Dust collecting paper stoppers for fixing and holding the upper and lower end portions of the dust collecting paper are attached to both upper and lower ends of the vertical surface of the dust collecting paper fixing plate, and the lower central front side of the cover plate and the central front of the support base are attached. An ion unit equipped with an ionization electrode is vertically erected vertically between the side upper surfaces so as to be detachable, and the ion unit is provided with an opening over the entire length on the rear surface side by a non-conductive member and at the front surface side. The wall surface is provided with a holder having a plurality of small holes, and the ionization electrode is attached to the longitudinal center of the long concave portion of the holder, and the ionization electrode is provided on the rear side of the strip-shaped conductive plate. A large number of dust collection needles with sharp needle-like tips are projected at equal intervals, and an ion needle with sharp needle-like tips on the front side has the same spacing as each small hole of the holder. And formed by protruding The electrode is mounted in the center of the long recess of the holder so that the ion needles protrude from the small holes, and the upper end of the ionization electrode is projected upward through the top plate of the holder. Attached to the holder with the lower end of the ionization electrode fixed to a coil spring fixed to the bottom plate of the holder, and the ion unit is attached to the tip of each dust collecting needle. From the dust collecting electrode plate to the dust collecting electrode plate so as to maintain a distance of about 4 cm, and the dust collecting electrode plate is detachably attached to the upper and lower mounting portions of the cover plate and the support base. A concave groove is formed on the rear side from the edge, and a fitting insertion hole for fitting the conductive connecting pin is formed at the rear end portion of the concave groove. Further, the lower mounting portion is formed on the support base. From the front center edge to the rear side The ion unit, which is formed by forming a groove and a hooking recess at the rear end of the groove and is detachably attached to the upper and lower mounting portions of the cover plate and the support base, is the upper surface of the holder. A pipe made of a non-conductive member is fitted and fixed to the outer peripheral surface of the lower portion of the conductive connecting pin that penetrates through and protrudes upward, and the guide convex portion projects from the lower surface of the lower plate of the holder. The above-mentioned problem is solved by employing any one of a means for forming a hooking curved projection projecting on the rear surface side of the guiding projection.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described in detail with reference to the drawings. A vertically long dust collecting paper fixing plate 2 is erected on the rear upper surface of a support base 1 formed in an oblong oval shape. It is fixed.

The dust collecting paper fixing plate 2 is made of a non-conductive material such as plastic, and has a substrate 4 having a wide vertical surface 3 on the front surface of the central portion over substantially the entire height, and inwardly on both sides of the vertical surface 3. Ion wind straightening plate 6 having a curved surface 5 gently curved to
Further, a horizontal oblong cover plate 7 having substantially the same shape as that of the support base 1 is integrally and continuously formed on the vertical surface 3.

A dust collecting electrode plate (anode) 8 is provided on almost the entire vertical surface 3 on the front surface of the dust collecting paper fixing plate 2.
Is fixed to the front surface of the dust collecting electrode plate 8 at both upper and lower ends of the vertical surface 3 of the dust collecting paper fixing plate 2.
For example, a dust collecting paper stopper 10 for fixing and holding the upper and lower ends of the sheet-shaped dust collecting paper 9 such as a paper towel is attached.

The dust collecting paper stopper 10 is not particularly limited, but it is recommended that the dust collecting paper stopper 10 preferably has a structure shown in FIGS. 2, 5 and 6. That is, on both sides of the lower end portion of the vertical surface 3 of the dust collecting electrode plate 8, a holder 12 having a mounting plate 11 that opens and holds the lower end portions of both sides of the dust collecting paper 9 is attached. Further, a press-connecting tool 14 having openable and closeable press-contact plates 13 for pressing and holding both upper end portions of the dust collecting paper 9 against the vertical surface 3 is provided on both sides of the upper end portion of the vertical surface 3.
Is installed.

On the other hand, an ion unit 16 having an ionization electrode (cathode) 15 is vertically erected vertically between the lower front surface of the cover plate 7 on the central front side and the upper front surface of the support base 1 on the central front side. It is fixed.

As shown in FIG. 3, the ion unit 16 has an opening 17 made of a non-conductive material such as plastic over the entire length on the rear surface side, and has an interval above and below a curved wall surface 18 on the front surface side. A holder 20 having a semi-cylindrical cross section is provided with a small hole 19 formed as a set of two, and an ionization electrode 15 is mounted in the longitudinal center of a long recess 21 on the rear surface side of the holder 20. Is formed.

As shown in FIG. 4, the ionization electrode 15 has a large number of dust collecting needles 23, which are sharpened like needles at the tip, on the rear side of the belt-shaped conductive plate 22 so that corona discharge is likely to occur. And an ion needle 24 having a sharp needle-like tip for emitting negative ions to the front side of the conductive plate 22 with the same interval as the small holes 19 of the holder 20. Two small holes 19 are formed so as to extend through each small hole 19 so that the front end thereof can project forward.

The ionization electrode 15 is mounted in the center of the long recess 21 of the holder 20, and it is recommended that the mounting means be as shown in FIGS. 2 and 5. That is, the ionization electrode 15 is formed above and below the long recess 21.
The mounting plates 26 recessed around the slits 25 serving as guides for mounting in the center of the mounting plate 26 are fixed, and the ionization electrodes 15 are inserted into the slits 25 of each mounting plate 26, and The lower end is the holder 20
Is fixed to the upper end of a coil spring 27 whose lower end is connected and fixed to the lower part of the holder, and the upper end of the ionization electrode 15 is connected to a conductive connecting pin 29 protruding upward through a top plate 28 of the holder 20. By fixing the dust collecting needle 23
On the back side, and the tip of the ion needle 24 slightly projects from each small hole 19, so that the ionization electrode 15 is linearly attached to the longitudinal center of the long recess 21 of the holder 20.

On the other hand, the ionization electrode 1 is formed on the lower surface of the cover plate 7 on the central front side and on the upper surface of the support base 1 on the central front side.
5 from the tip of each dust collecting needle 23 to the dust collecting electrode plate 8
The upper and lower mounting portions 30 and 31 are formed so that the ion unit 16 can be attached and detached while maintaining a constant distance, preferably about 4 cm, to the ion unit 16 as well. Lower mounting part 30, 31
Has a configuration corresponding to.

That is, a pipe 32 made of a non-conductive material such as plastic is provided on the outer peripheral surface of the lower portion of the conductive connecting pin 29 protruding upward through the upper plate 28 of the holder 20 of the ion unit 16. While being fitted and fixed, a rectangular guide projection 34 is provided on the lower surface of the lower plate 33 of the holder 20, and a hooking curved projection 35 is projected on the rear surface side of the guide projection 34. It is set up.

The upper mounting portion 30 provided on the lower central front side of the cover plate 7 into which the conductive connecting pin 29 of the holder 20 is inserted has an electrical conductivity from the central front end edge of the cover plate 7 to the rear side. A concave groove 36 for slidingly contacting and sliding the connecting pin 29 is provided, and a fitting insertion hole 37 for inserting the conductive connecting pin 29 is provided at a rear end portion of the concave groove 36. A contact portion 29a is provided in 37 so that the inserted conductive connecting pin 29 is electrically connected to the negative side.

Further, the guide projection 3 of the holder 20 is provided.
The lower mounting portion 31 provided on the center front side upper surface of the support base 1 into which the support projection 4 and the hooking curved protrusion 35 are inserted is provided with the guide convex portion from the top center front end edge of the support base 1 to the rear side. 34a for sliding the sliding projection 34 and the hooking curved projection 35 into sliding contact with each other
Is formed so as to be recessed, and a hooking recess 38 into which the hooking curved projection 35 can be fitted and hooked is formed at the rear end of the groove 35a.

On the front side of the dust collecting paper fixing plate 2 and the ion unit 16, there is provided a cover 40 having a large number of ventilation holes 39 serving as air passages, and a front end portion of the support base 1 and the ion wind rectifying plate 6. It is hung so that it can be attached to and detached from the outer end of the.

Next, the operation of the electrostatic air purifying apparatus according to the embodiment of the present invention will be described. First, the dust collecting paper 9 such as a paper towel is fixed to the front surface of the dust collecting electrode plate 8 via the holder 12 and the pressure contactor 14, and the cover 4
0 is hooked and fixed on the dust collecting paper fixing plate 2, and electricity is applied to the dust collecting electrode plate 8 and the ionizing electrode 15.

Due to the energization, the ionization electrode 15 is
For example, −6 KV is applied, and +6 KV of the same voltage is applied to the dust collecting electrode plate 8. When the potentials of the ionization electrode 15 and the dust collection electrode plate 8 are set as described above, a power line from the dust collection needle 23 of the ionization electrode 15 to the dust collection electrode plate 8 is generated, whereby the dust collection needle 23 collects electricity. Ion wind is generated in the direction of the dust electrode plate 8, and further the ion wind hitting the ion wind rectifying plate 6 is rectified to the front inner surface side by the curved surface 5 to continue the circular motion toward the dust collecting electrode plate 8, and
With respect to the ionization electrode 15 to which the −6 KV is applied,
Since the electric potential of the air (inside the room) is 0 V and the air is not electrically discharged, negative ions are emitted from the ion needle 24 toward the inside of the room.

On the other hand, since the dust collecting needle 23 of the ionizing electrode 15 has a needle-like shape with a sharp tip, a corona discharge is relatively easily initiated toward the dust collecting electrode plate 8 by a high voltage and is generated by the corona discharge. When dust comes into contact with gas ions or electrons, the dust is negatively charged. The negatively charged dust (ionized dust) moves toward the dust collecting electrode plate 8, and the dust is attached to and collected by the dust collecting paper 9 coated on the front surface of the dust collecting electrode plate 8.

Since the dust collecting electrode plate 8 is attached over almost the entire vertical surface 3 on the front surface of the dust collecting paper fixing plate 2, the dust collecting electrode plate 8 has a large surface area and the dust collecting paper 9 extends from the tip of each dust collecting needle 23. Since the distance up to about 4 cm is always kept constant, the efficiency of collecting the ionized dust is high.

When the ionized dust is collected on the dust collecting paper 9 and the dust collecting paper 9 turns black, a new dust collecting paper 9 is collected.
In the case of replacing with, the cover 40 is first removed, and the lower part of the ion unit 16 is pulled and pulled forward, and the hooking curved projection 35 provided on the rear part of the guide projection 34 at the lower part of the holder 20. Is the hook recess 3 of the lower mounting portion 31.
Since it is simply hooked to 8, it is easily pulled out to the front side along the concave groove 36, and accordingly the conductive connecting pin 29 at the upper portion of the ion unit 16 is also detached from the fitting insertion hole 37 of the upper mounting portion 30. Then, the ion unit 16 is removed, and the dust collecting needle 23 and the ion needle 24 are cleaned with a brush or the like.

Thereafter, the pressure contact plate 13 of the pressure contact tool 14 is opened, and the dust collecting paper 9 placed on the mounting plate 11 of the holder 12 is removed.
And the dirty dust collecting electrode plate 8 is wiped off, the lower part both sides of the new dust collecting paper 9 are placed on the placing plate 11 described above, and the pressure contact plates 13 are closed on both upper parts of the dust collecting paper 9. And presses against the dust collecting electrode plate 8.

Then, the conductive connecting pin 29 in the upper portion of the ion unit 16 is slid rearward along the concave groove 36 of the upper mounting portion 30, and the conductive connecting pin 29 is fitted into the fitting insertion hole 37. After that, the guide convex portion 34 at the lower portion of the ion unit 16 is slid rearward along the concave groove 35a of the lower mounting portion 31, and the hooking curve on the rear surface side of the guide convex portion 34 is made. The projection 35 is fitted into the latching recess 38 for latching, and the top plate 28 is brought into pressure contact with the outer edge portion of the fitting hole 37 to vertically stand the ion unit 16 on the front surface of the dust collecting paper fixing plate 2. It is installed and fixed, and the cover 40 is attached for use.

[0026]

Since the present invention is as described above, the distance from the tip of each dust collecting needle constituting the ion unit equipped with the dust collecting needle to the dust collecting electrode plate is kept constant at about 4 cm. Therefore, the dust collecting ability is excellent, and a stable dust collecting state can be maintained at all times, and the amount of ions is also stably released. Further, since the dust collecting electrode plate is wider than the conventional one, the area in which the electrons hit the dust collecting electrode plate is widened and the dust collecting power is strong, which is an excellent effect. Also, since the ion unit can be attached and detached very easily, it does not get in the way when replacing dust collection paper, does not hurt the dust collection needle, and the dust collection needle and ion needle can be cleaned quickly and easily. is there. However, since the dust collecting needles are provided integrally with the ion needles with their phases different by 180 degrees, the amount of released ions is greater than that of the conventional one that also serves as both the dust collecting needle and the ion needle. It has an excellent effect of being many.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an electrostatic air cleaner of the present invention.

FIG. 2 is a side view of the entire electrostatic air purifier of the present invention with a part cut away.

FIG. 3 is an enlarged cross-sectional view of an ion unit in the electrostatic air cleaning device of the present invention.

FIG. 4 is an enlarged perspective view of an ionization electrode in the electrostatic air cleaning device of the present invention.

FIG. 5 is a partially cutaway side view showing how the dust collecting paper is attached to the dust collecting paper fixing plate in the electrostatic air purifying apparatus of the present invention.

FIG. 6 is a partially cutaway side view showing a state in which the ion unit is mounted in the electrostatic air purifying apparatus of the present invention.

[Explanation of symbols]

1 support base, 2 dust collecting paper fixing plate, 3 vertical surface, 4
Substrate, 5 curved surface, 6 ion wind straightening plate, 7
Cover plate, 8 dust collecting electrode plate, 9 dust collecting paper, 10 dust collecting paper stopper, 11 mounting plate, 12 holding tool, 1
3 pressure contact plate, 14 pressure contact tool, 15 ionization electrode,
16 ion units, 17 openings, 18 wall surfaces, 19 small holes, 20 holders, 21 long recesses, 22 conductive plates, 23 dust collecting needles, 24 ion needles, 25 slits, 26 mounting plates, 27 coil springs, 28 top plate, 29 Conductive connecting pin,
29a contact part, 30 upper mounting part, 31 lower mounting part, 32 pipe, 33 lower surface plate 34 guide convex part, 35 hooking curved projection part, 35a concave groove, 3
6 concave groove, 37 fitting insertion hole, 38 locking concave portion, 39
Vents, 40 covers.

Claims (2)

[Claims] 1. A dust collecting electrode plate is fixed over substantially the entire surface of a wide vertical surface on the front surface of the dust collecting paper fixing plate, and the dust collecting paper is attached to the front surface of the dust collecting electrode plate. It is detachably attached by a stopper, and a plurality of dust collecting needles are provided at the center of the front side of the dust collecting electrode plate of the dust collecting paper fixing plate on the rear side of the belt-shaped conductive plate,
An ion unit formed by mounting an ionization electrode provided by projecting a plurality of ion needles on the front side of the conductive plate is about 4 cm from the tip of each dust collecting needle to the dust collecting electrode plate. An electrostatic air purifying device characterized in that it is vertically erected and fixed so that it can be detached while maintaining a certain distance. 2. A dust collecting paper fixing plate is erected and fixed on the rear side upper surface of the support base, and the dust collecting paper fixing plate is a substrate having a vertical surface on the front surface of the central portion by a non-conductive member, and the vertical surface. An ion wind straightening plate having curved surfaces curved inwardly on both sides of the support plate, and a cover plate having substantially the same shape as the support on the vertical surface, and the dust collecting paper fixing plate. 1 on almost the entire vertical surface of the front of
The dust collecting electrode plates are fixed, and dust collecting paper stoppers for fixing and holding the upper and lower ends of the dust collecting paper are attached to both upper and lower ends of the vertical surface of the dust collecting paper fixing plate, An ion unit equipped with an ionization electrode is vertically erected vertically between a lower surface on the front side of the center and an upper surface on the front side of the center of the support base. And a holder provided with a plurality of small holes on the wall surface on the front surface side, and an ionization electrode is attached to the center of the long recess of the holder in the longitudinal direction. The electrode is provided on the rear side of the strip-shaped conductive plate with a large number of dust collecting needles having sharp needle-like tips protruding at equal intervals, and an ion needle having a sharp needle-like tip on the front side,
The ionization electrode is formed so as to project at the same intervals as the small holes of the holder, and the ionization electrode is configured such that the tip of each ion needle protrudes from each small hole in the center of the long recess of the holder. The upper end of the ionization electrode is attached to the coil spring fixed to the lower plate of the holder by connecting and fixing the upper end of the ionization electrode to the conductive connecting pin projecting upward through the upper plate of the holder. The ion unit is fixedly connected and mounted on the holder, and the ion unit is placed above and below the cover plate and the support table so as to maintain a distance of about 4 cm from the tip of each dust collection needle to the dust collection electrode plate. The upper mounting portion is removably attached to the mounting portion, and the upper mounting portion has a recessed groove formed in a rearward direction from a central front end edge of the cover plate, and the conductive connecting pin is provided at a rear end portion of the recessed groove. Provide a fitting hole for fitting Further, the lower mounting portion is formed by forming a recessed groove from the front center edge of the upper surface of the support base to the rear side and providing a hooking recess at the rear end of the recessed groove. The ion unit, which is detachably attached to the upper and lower mounting portions of the cover plate and the support base, has an outer peripheral surface of the lower portion of the conductive connecting pin that protrudes upward through the upper surface of the holder.
A pipe made of a non-conductive member is fitted and fixed,
On the lower surface of the lower surface plate of the holder, a protrusion for a guide is provided,
Further, the electrostatic air purifying device is characterized in that a curved projection for hooking is formed by projecting on a rear surface side of the convex for guide.