CN1171643A

CN1171643A - Air Cleaner

Info

Publication number: CN1171643A
Application number: CN97111422A
Authority: CN
Inventors: 下田照夫; 高梨庆太; 稻山宏之; 村尾州彦
Original assignee: Teac Corp
Current assignee: Teac Corp
Priority date: 1996-05-20
Filing date: 1997-05-20
Publication date: 1998-01-28
Also published as: JPH09308837A; KR100281240B1; KR970077838A; TW398686U

Abstract

The present invention aim to improve the uniformity and efficiency of dust attraction in an electronic air cleaner. A first and a second dust collecting electrodes 21, 22 are arranged on the peripheral surface of a cylindrical support body 4. Pores 24 are formed in the second dust collecting electrode 22. The area of the second dust collecting electrode 22 which is separated farther from an ionizing electrode 1 than the first dust collecting electrode 21 is made greater than that of the first dust collecting electrode 21. The total surface area of the first and the second dust collecting electrodes 21, 22 is made at least 70% of the area of a part of dust collecting paper 6 wound onto the support body 4.

Description

Aircleaning facility

The present invention relates to dust ionization is carried out the aircleaning facility of the form of control of dust.

Existing aircleaning facility comprises for example the applying like that as depicted in figs. 1 and 2-ionising electrode (negative electrode) 1 of 6kV, first collecting electrode 2 of for example earthing potential and applies for example second collecting electrode 3 of 6kV.Ionising electrode 1 forms cylindric and has a plurality of needle-like protuberance 1a.First collecting electrode 2 and second collecting electrode 3 are the strip metal plate, are wound on the surface of diameter less than the cylindraceous cylindric supporter 4 of the cylinder of ionising electrode 1 circularly.First collecting electrode 2 is configured near the ionising electrode 1 the position, and second collecting electrode 3 is configured in than on the farther position of first collecting electrode 2 with respect to ionising electrode 1.

In the hollow bulb 5 of cylindric supporter 4, hold the object that the control of dust paper 6 as the control of dust sheet with insulating properties and flexibility is wound into the cylinder shape.Be provided for making cylinder shape control of dust paper 6 to rotate the axle 7 that positions freely, and be provided for control of dust paper 6 is drawn out to from hollow bulb 5 groove 8 of the wall surface of cylindric supporter 4.The outer peripheral face that cylindric supporter 4 was drawn and be wound on to control of dust paper 6 from groove 8 to encase first collecting electrode 2 and second collecting electrode 3, is fixed on the cylindric supporter 4 by fixed part (not shown) on the whole.Ionising electrode 1 is fixed on the round table-like insulating properties supporter 9.A plurality of posts 10 of the location usefulness of the lid (not shown) with a plurality of seams that become air duct are set in this insulating properties supporter 9.This round table-like supporter 9 is supporting cylindric supporter 4.

Ionising electrode 1, first collecting electrode 2 and second collecting electrode 3 are connected on the power circuit shown in Figure 2.This power circuit is that transition suppresses converter, the former limit winding 13 of the transformer 12 between pair of output that comprise the DC power supply 11 formed by the current rectifying and wave filtering circuit that for example is connected on the mains ac power supply, is connected DC power supply 11, the transistor 14 that conduct is connected in series in the switch element on this former limit winding 13, be connected transformer 12 secondary winding 15 on many voltage doubling rectifing circuits 16, the 3rd limit winding 17 and the control circuit 26 of transformer 12.Many voltage doubling rectifing circuits 16 are made up of six diode D1～D6, six capacitor C1～C6, five resistance R 1～R5.The output line 18 of resistance R 3 is connected on second collecting electrode 3, and the output line 19 of resistance R 4 is connected on first collecting electrode 2, and the output line 20 of resistance R 5 is connected on the ionising electrode 1.

Control circuit 26 comes the base current of oxide-semiconductor control transistors 14 to obtain by the output voltage of constant voltage according to the voltage of the 3rd limit winding 17.Transistor 14 suppresses the same break-make of converter with known transition.

When on ionising electrode 1, for example applying-6kV, on first collecting electrode 2, apply 0V, on second collecting electrode 3, apply+during 6kV, produce corona discharge at the ionising electrode 1 that works as negative electrode and first collecting

electrode

2,3 of second collecting electrodes, and emit a large amount of electronics to first collecting electrode 2 and second collecting electrode 3 from ionising electrode 1.The electronics of emitting by this corona discharge carries out negative ionization to the molecule of air (particularly oxygen molecule).The aerial dust (for example, the ight soil of dust, bacterium, domestic animal, pollen etc.) that swims becomes to have from anion and receives that the particle of the negative electrical charge of electronics is a negative ionization dust.Because it is the high potential of benchmark that first collecting electrode 2 and second collecting electrode 3 have with ionising electrode 1, and become the state of positively charged, the Coulomb force acts between the positive charge of negative ionization dust and collecting

electrode

2,3, negative ionization dust moves towards collecting

electrode

2,3, and is attracted on the control of dust paper 6 on the outer peripheral face that is wound on cylindric supporter 4.And appear at the phenomenon that near the unipolarity ion the DC electric field moves along specific direction, promptly produce ion wind.Like this, in the device of Fig. 1 and Fig. 2, produce the ion wind that blows to first collecting electrode 2 and second collecting electrode 3 from ionising electrode 1.That is, produce the ion wind that blows to upside from the downside of cylindric supporter 4.Be configured in the effect that ionising electrode 1 and second collecting electrode, the 3 first middle collecting electrodes 2 have the effect that makes the Potential distribution homogenizing and make the good generation of ion wind.

In order to make the control of dust paper 6 can be effectively and stably adsorb dust, the atmospheric humidity of wishing to surround control of dust paper 6 be also high as much as possible 30% or more.Thereby, under the lower situation of humidity, will cause by control of dust paper 6 absorption property low of the dust that produces, and produce and adsorbed peeling off of dust.

In existing aircleaning facility, because be mobile dust is adsorbed on structure on the control of dust paper 6 that has more than certain humidity by ion wind, then the area of first collecting electrode 2, second collecting electrode 3 is significantly smaller than the area of reeling facing to the cylindric supporter 4 of control of dust paper 6.Though not with collecting electrode 2, the 3 contacted zones of control of dust paper 6 on, can adsorb dust by suction-operated according to humidity,, compare with collecting

electrode

2,3 contacted zones and to want much less.Thereby the distribution of the absorption of the dust on control of dust paper 6 becomes inhomogeneous.

Therefore, the purpose of this invention is to provide a kind of aircleaning facility that can seek to improve the adsorption efficiency of dust.

To achieve these goals, aircleaning facility of the present invention, have the supporter of ionising electrode, collecting electrode and above-mentioned ionising electrode and above-mentioned collecting electrode, the control of dust sheet is configured to contact with the surface of above-mentioned collecting electrode, and dust is adsorbed on the above-mentioned control of dust sheet, it is characterized in that above-mentioned collecting electrode is to have a plurality of apertures or concavo-convex conductor plate.

According to a second aspect of the present invention, making collecting electrode at least is first collecting electrode 2 and second collecting electrode 3, is provided with a plurality of apertures or concavo-convex on second collecting electrode that is configured in than ionising electrode farther place.

According to a third aspect of the present invention, be provided with a plurality of apertures or concavo-convex on both at first and second collecting electrodes.

According to a fourth aspect of the present invention, with aperture on the collecting electrode or concavo-convexly have or not irrelevantly, and irrelevant, be more than 50% of area of control of dust sheet and make the surface area of collecting electrode with having or not of first collecting electrode 2 and second collecting electrode 3, best more than 70%.

According to a fifth aspect of the present invention, make the surface area of the surface area of second collecting electrode greater than first dust collect plant.

According to the 1st～3 aspect of the present invention, can be corresponding to the aperture of collecting electrode or concavo-convex and on the surface of control of dust sheet, produce concavo-convex.Thereby the surface area of control of dust sheet increases, and just can seek the increase of the adsorption efficiency of dust.

Be difficult to be attracted to peeling off of dust in the recess of control of dust sheet, and once adsorbed dust flying out in atmosphere tailed off.

Under the situation that is provided with aperture on the collecting electrode, the flexible change of collecting electrode is big, and the operation that then is used to make collecting electrode make required form improves.

According to of the present invention the 4th, 5, the increase of the area by seeking collecting electrode, just can be used in adsorb dust by the Coulomb force the scope of electric field greater than existing, the adsorption efficiency that just can seek dust increases.Promptly, in existing aircleaning facility, do not contacting and from the zone that ionising electrode leaves with the collecting electrode of control of dust sheet, because only depend on humidity and ion wind is adsorbed dust, thus adsorption efficiency worsen, still, when the area of seeking collecting electrode by the present invention the 4th, 5 aspects like that increases, just can increase the area that adsorbs by the Coulomb force, even under the low situation of humidity, the adsorption efficiency of dust is also better.And, can make control of dust sheet absorption dust homogenizing, can prolong the operating period of same control of dust paper.

According to a fifth aspect of the present invention, under situation,, put forward the uniformity of the high absorption of absorption dust by increasing the area of luxuriant sub-polarizing electrode second collecting electrode far away with first and second collecting electrodes.

Fig. 1 is the perspective view of the existing aircleaning facility of expression;

Fig. 2 is a part of longitudinal section of aircleaning facility of presentation graphs 1 and the figure of circuit thereof;

Fig. 3 is the perspective view of the aircleaning facility of expression first embodiment;

Fig. 4 is the longitudinal section of the aircleaning facility of presentation graphs 3;

Fig. 5 is the amplification sectional view that comes the part of presentation graphs 4 with the state that is accompanied by control of dust paper;

Fig. 6 is a sectional view of representing the aircleaning facility of second embodiment with the A-A of Fig. 7;

Fig. 7 is the plane graph of the aircleaning facility of Fig. 6.

First embodiment

Below, the electronic air cleaner of the first embodiment of the present invention is described with reference to Fig. 3～Fig. 5.But, in Fig. 3～Fig. 5, use identical label on the substantially identical part and omit its explanation with Fig. 1 and Fig. 2.

Fig. 3～electronic air cleaner shown in Figure 4 except the shape of second collecting electrode 3 that changed Fig. 1 and Fig. 2, has the structure identical with the aircleaning facility of Fig. 1 and Fig. 2.Second collecting electrode 22 of Fig. 3 and aircleaning facility shown in Figure 4 has a plurality of diameter 0.5～5mm, area 0.39～39.25mm ²About aperture 24.Compare according to second collecting electrode 22 of the present invention of Fig. 3 and second collecting electrode 3 shown in Figure 1 by handle, as can be seen, the surface area of second collecting electrode 22 of Fig. 3 is greater than the surface area of second collecting electrode 3 of Fig. 1.The aggregate value of first collecting electrode 21 in the aircleaning facility of Fig. 3 and Fig. 4 and the surface area of second collecting electrode 22 is corresponding to about 70% of the coiling area of the control of dust paper 6 of cylindric supporter 4.

First collecting electrode 21 is for being wound on the metal plate of for example titanium that does not have a plurality of apertures etc. on the object on the cylindric supporter 4.

Second collecting electrode 22 is to reel on the outer peripheral face of cylindric supporter 4 and fixing by punching at such the having formation on the flexible metallic plate of for example aluminium about thick 0.3～0.5mm aperture 24.Second collecting electrode 22 has bigger flexibility because of aperture 24, just can be easy to reel with respect to cylindric supporter 4.

The basic structure that is used for ionising electrode 1, first collecting electrode 21 and the power circuit of second collecting electrode 22 is identical with existing power supply circuit shown in Figure 2, on ionising electrode 1, apply-6kV, on first collecting electrode 21, apply 0kV, on second collecting electrode 22, apply+6kV.And first collecting electrode 21 has the effect identical with first collecting electrode 2 of Fig. 1 and Fig. 2.

Have the coiling of the control of dust paper 6 of the such flexibility of paper handkerchief for example in the same manner with the prior art of Fig. 1 with respect to cylindric supporter 4.Because second collecting electrode 22 has aperture 24, when using when control of dust paper 6 being wound on second collecting electrode 22, a part that control of dust paper 6 occurs enters the state in the aperture 24, the essence that has except control of dust paper 6 concavo-convex, produces corresponding with aperture 24 concavo-convex from the teeth outwards.Because the Coulomb force is for being ionized dust and can having an effect effectively in the distance of first collecting electrode 21, second collecting electrode, 22 about 1mm, so the thickness of control of dust paper 6 is under the situation below the 1mm, self-evident, control of dust paper 6 with first collecting electrode 21, second collecting electrode, 22 contacted zones, even to being arranged in the ionization dust in aperture 24 zones, also can have an effect in the Coulomb force.Thereby the part of the aperture 24 of control of dust paper 6 also helps the control of dust that produced by the Coulomb force.And, under humidity is situation more than 30%, not yet not the having as the function that moves the adsorption plane of dust by ion wind of control of dust paper 6 with collecting

electrode

21,22 contacted zones.Thereby, when aperture 24 is big, near the periphery of the aperture 24 of control of dust paper 6 zone has both effect of adsorption plane that is produced by the Coulomb force and the adsorption plane that moves dust by ion wind, and the central area has the effect that conduct is moved the adsorption plane of dust by ion wind.

As from above-mentioned see, in the aircleaning facility in the present embodiment, produced the effect of the surface area increase of control of dust paper 6 by aperture 24, and, becoming is difficult to make the dust that has been adsorbed on control of dust paper 6 apertures 24 zones to be peeled off, and just can improve dust catching efficiency.

Owing to obtained the increase of the total area of collecting

electrode

21 and 22, so the binding domain by the Coulomb force produced on the control of dust paper 6 increases, and particularly, just can reach under the low situation of humidity, make the absorption profiles homogenizing of dust, and prolong the operating period of control of dust paper 6.

Because the surface area of second collecting electrode 22 is greater than the surface area of first collecting electrode 21, so increased by the dust agglutination that the Coulomb force produced of luxuriant sub-polarizing electrode 1 second collecting electrode 22 far away, the uniformity of the absorption profiles of dust improves.

Second embodiment

Below, the electronic air cleaner of second embodiment is described with reference to Fig. 6 and Fig. 7.But, in Fig. 6 and Fig. 7, use identical label on the substantially identical part and omit its explanation with Fig. 1～Fig. 5.Fig. 6 and aircleaning facility shown in Figure 7 are at ionising electrode 1, first collecting electrode 21, second collecting electrode 22, their supporter 4 and the vpg connection of ionising electrode supporter 9, with Fig. 3 and shown in Figure 4 different.But, the function of the each several part of Fig. 6 and aircleaning facility shown in Figure 7 in fact with Fig. 3 and Fig. 4 in the part represented with identical label identical.In Fig. 6 and Fig. 7, ionising electrode 1 is made up of two linear conductors, and cylindric supporter 4 forms has circular-arc surface.A pair of wire ionising electrode 1 is supported on the relative pair of plate-shaped supporter 9.Be arranged on supporter 4 one sides' the inclined plane one of in two first collecting electrodes 21, another in two first collecting electrodes 21 is arranged on supporter 4 the opposing party's the inclined plane.Second collecting electrode 22 is identical with first embodiment and have aperture 24.Applying on the ionising electrode 1 of Fig. 6 and Fig. 7-6kV, applying 0kV on first collecting electrode 21 and on second collecting electrode 22, applying+6kV.The surface area that first collecting electrode 21 and second collecting electrode 22 add up to is set and is about about more than 50% at the area in the circular-arc lip-deep zone of the supporter 4 of control of dust paper 6.Under the condition identical, form aperture 24 with first embodiment.

Fig. 5 and aircleaning facility shown in Figure 7, identical with Fig. 3 and aircleaning facility shown in Figure 4 on operation principle, therefore, have in fact and Fig. 3 and the identical action effect of aircleaning facility shown in Figure 4.Owing to first collecting electrode 21 and second collecting electrode 22 are configured on the circular-arc surface, just can adsorb ionization dust is enclosed under circular-arc interior such state.

Variation

The present invention is not limited in the foregoing description, can be for example following distortion:

(1) can be divided into second collecting electrode 22 more than two.Be divided into first collecting electrode 21 a plurality of.

(2) can be for saving the structure of first collecting electrode 21.

(3) first collecting electrodes 21 can be for being provided with the structure of aperture with second collecting electrode 22 in the same manner.In the case, the aperture on first collecting electrode 21 is distributed equably with respect to ionising electrode 1.

(4) can the concavo-convex of height (degree of depth) be set on the surface of second collecting electrode 22 about best 0.2～2mm, to replace aperture 24.

(5) can increase such function: fan is set and removes airborne dust with filter paper.

(6) can change the ratio of the total surface area of first collecting electrode 21 and second collecting electrode 22 to the outer peripheral face part of the supporter 4 of control of dust paper 6.In order to reach the homogenizing of the absorption dust on the control of dust paper 6, aforementioned proportion should be more than 50%, is preferably more than 70%.

(7) can make first collecting electrode 21 on copper, plating the material that prevents the coating that corrodes or being other metals such as tungsten.

(8) can be under bias state (bias state), on ionising electrode 1, apply-voltage of 4kV, on first collecting electrode 21, apply+voltage of 2kV, on second collecting electrode 22, apply+voltage of 8kV, perhaps, under bias state, on ionising electrode 1, apply-voltage of 8kV, on first collecting electrode 21, apply-voltage of 2kV, on second collecting electrode 22, apply+voltage of 4kV.That is,, can apply the opposite voltage of absolute value for the ionising electrode 1 and second collecting electrode 22.

(9) can control of dust paper 6 be configured on first collecting electrode 21.

Claims

1. aircleaning facility, the supporter that possesses ionising electrode, collecting electrode and above-mentioned ionising electrode and above-mentioned collecting electrode is configured to the control of dust sheet to contact with the surface of above-mentioned collecting electrode, and dust is adsorbed on the above-mentioned control of dust sheet, it is characterized in that

Above-mentioned collecting electrode is to have a plurality of apertures or concavo-convex conductor plate.

2. aircleaning facility, the supporter that possesses ionising electrode, collecting electrode and above-mentioned ionising electrode and above-mentioned collecting electrode is configured to the control of dust sheet to contact with the surface of above-mentioned collecting electrode, and dust is adsorbed on the above-mentioned control of dust sheet, it is characterized in that

Above-mentioned collecting electrode is formed by being configured near first collecting electrode the above-mentioned ionising electrode and being configured in than second collecting electrode of the above-mentioned first collecting electrode farther place with respect to above-mentioned ionising electrode, above-mentioned first collecting electrode is not have a plurality of apertures or concavo-convex conductor plate, above-mentioned second collecting electrode is to have a plurality of apertures or concavo-convex conductor plate, and above-mentioned control of dust sheet is configured to contact with above-mentioned second collecting electrode at least.

3. aircleaning facility, the supporter that possesses ionising electrode, collecting electrode and above-mentioned ionising electrode and above-mentioned collecting electrode is configured to the control of dust sheet to contact with the surface of above-mentioned collecting electrode, and dust is adsorbed on the above-mentioned control of dust sheet, it is characterized in that

Above-mentioned collecting electrode is formed by being configured near first collecting electrode the above-mentioned ionising electrode and being configured in than second collecting electrode of the above-mentioned first collecting electrode farther place with respect to above-mentioned ionising electrode, and the first and second collecting electrode boths have a plurality of apertures or concavo-convex conductor plate.

4. aircleaning facility, the supporter that possesses ionising electrode, collecting electrode and above-mentioned ionising electrode and above-mentioned collecting electrode is configured to the control of dust sheet to contact with the surface of above-mentioned collecting electrode, and dust is adsorbed on the above-mentioned control of dust sheet, it is characterized in that

Above-mentioned collecting electrode is configured on the surface of above-mentioned supporter,

Above-mentioned control of dust sheet is configured on above-mentioned supporter and the above-mentioned collecting electrode and forms like that,

The surface area of above-mentioned collecting electrode is set to more than 50% of surface area that is configured in the above-mentioned control of dust sheet on above-mentioned supporter and the above-mentioned collecting electrode.

5. aircleaning facility, possess ionising electrode, be configured near first collecting electrode of above-mentioned ionising electrode, be configured in second collecting electrode with respect to above-mentioned ionising electrode than the above-mentioned first collecting electrode farther place, and the supporter that is used to support above-mentioned ionising electrode and above-mentioned first and second collecting electrode, the control of dust sheet is configured to contact with the surface of above-mentioned second collecting electrode at least and dust is adsorbed on the above-mentioned control of dust sheet, it is characterized in that

Above-mentioned second collecting electrode has the surface area greater than above-mentioned first collecting electrode.