JPH0367743B2 - - Google Patents

Description

[Detailed Description of the Invention] [Objective of the Invention] (Industrial Application Field) This invention is a method for collecting dust by ionizing dust such as cigarette smoke in the air by corona discharge between a discharge electrode and a collection electrode. Regarding air purifiers.

(Prior art) Conventionally, this type of air purifier has a discharge electrode and a dust collection electrode facing each other, the discharge electrode being connected to the negative side and the dust collection electrode being connected to the positive side, and a high DC voltage being applied between the two electrodes. A negative corona discharge is generated in the vicinity, and solid and liquid fine particles floating in the gas led between the two electrodes are collected on the dust collecting electrode.

However, if fine particles adhere to the dust collecting electrode and gradually accumulate, the corona discharge between the two electrodes becomes uneven, and the removal rate of dust in the air such as smoke passing through areas where the corona discharge is weak becomes poor. In order to remove the dust that has adhered to and accumulated on the dust electrode, the dust collection electrode is vibrated to shake off the dust, or the dirty dust collection electrode itself is discarded and replaced. However, when used in a general household, such work is troublesome and troublesome, and it is uneconomical to replace the expensive dust collecting electrode.

(Problems to be Solved by the Invention) This invention has been made based on the above circumstances, and its purpose is to provide inexpensive collection parts for collecting dust, etc., and to easily remove dirty collection parts. To provide an easy-to-handle and economical air cleaner that can be replaced.

[Structure of the invention]

(Means and operations for solving the problems) In order to solve the above problems, the present invention provides a dust collection device in an air purifier having a discharge electrode and a dust collection electrode disposed opposite to the discharge electrode. A sheet of paper for collecting smoke and other dust is installed along the pole so that it can be inserted or removed. Dust adheres to this sheet of paper, and by replacing the sheet, a good dust removal rate can be maintained. It is something.

(Embodiment) An embodiment of the present invention will be described below with reference to FIGS. 1 to 5.

FIG. 1 schematically shows an air purifier according to the present invention, and is a sectional view from the intake side A to the exhaust side B. FIG. 2 is a sectional view taken along the line X-Y in FIG. Shows the state seen from. Reference numeral 1 denotes a discharge electrode, and as shown in FIG. 4, the discharge electrode 1 has a flat plate shape and has sawtooth discharge portions 12 formed on the inner periphery of its cutout portion 11 toward the B direction on the exhaust side. Dust collection electrodes 2 are arranged above and below opposite to this discharge electrode 1, and each of the discharge electrode 1 and the dust collection electrode 2 is detachably inserted into a guide slit 4 provided in the side wall of a frame 3 made of synthetic resin. It has been inserted. A dust collecting paper 5 is placed on the surface of the dust collecting electrode 2 on the discharge electrode 1 side.
is attached. This collection paper 5 is made of newspaper,
Paper such as weekly magazines or other commercially available paper cut into a B5 or A4 rectangle can be used, and the peripheral edge in one direction is inserted into the guide slit 4 and placed along the dust collection electrode 2. It is something to do. The guide slit 4 has a slit 41 for the discharge electrode 1 and a slit 42 for the dust collection electrode 2, and the slit 42 for the dust collection electrode 2 is a slit 421 for the collection paper 5 that is attached and detached along the dust collection electrode 2. are set up in steps.

A synthetic resin holding plate 6 is provided approximately in the center of the discharge electrode 1 to sandwich the discharge electrode 1 in order to prevent the collection paper 5 from moving and to determine the position of the discharge electrode 1.

A pre-filter 7 is provided on the intake side A surface of the frame 3, a deodorizing filter 8 is provided on the exhaust side B surface, and a blower fan 9 is attached to the outside thereof.

The deodorizing filter 8 has the function of removing the odor of the gas passing through the through holes 81 due to the components of green tea flavonoids.

Gas containing dust such as cigarette smoke is removed by the blower fan 9.
The dust is forcibly sucked in by the drive of , larger dust is removed by the prefilter 7, and then introduced into the frame 3.

As shown in Figure 3, the gas introduced by the corona discharge generated between the negative discharge electrode 1 and the dust collecting electrode 2 to which a high voltage is applied becomes negative ions, and the ions attach to the dust. The dust particles become negatively charged. The negatively charged particles are collected toward the positive dust collecting electrode 2.

On the other hand, the collection paper 5 inserted along the dust collection pole 2
has the properties of a semiconductor, so the discharge 1
The dielectric is electrostatically polarized by the voltage between the electrode and the dust collecting electrode 2, and the side of the discharge electrode 1 inside the paper becomes positive, and the side of the dust collecting electrode 2 becomes negative, and they are brought into close contact by electrostatic force. In addition, since the collection paper 5 is a semiconductor, a weaker current flows through the dust collection electrode 1 than the discharge electrode 1, so the negatively charged dust particles move toward the positive dust collection electrode 1.
It will be attached to the positively charged collection paper. After attachment, the negatively charged particles are neutralized, but remain attached mechanically. Dirty collection paper 5
Then, the power is turned off, the collecting paper is taken out from the dust collecting pole slit 421, and the collecting paper 5 is replaced with a new collecting paper 5. That is, the collection paper 5 acts as a semiconductor and a dielectric material to attach and collect dust, and acts not as a dust collection pole itself but as a collection spacer.

The clean gas from which dust has been removed moves toward the exhaust side B, is deodorized by the deodorizing filter 8, and is exhausted.

The one shown in FIG. 5 is a modified example of the discharge electrode 1, in which a sawtooth discharge part 121 and a discharge part 122 are provided with their sharp ends facing each other, and the lines of electric force of the discharge part 122 are directed against the flow of gas. It's on. The dust collection force in this direction is stronger than that at the tip of 121 in the forward direction. This is discharge part 1
This contributes to strong and complete removal of remaining dust after the dust is removed by step 21.

There may be cases in which the collecting paper 5 does not perform electrostatic polarization due to increased humidity of the gas, but in this case, the collecting paper 5 is connected to the dust collecting electrode 2 at the guide slit 421 and the holding plate 6.
Since it is in contact with the collecting paper 5, the dust particles that are also positively charged and negatively charged will adhere to the collection paper 5.

Further, ozone generated by corona discharge has a sterilizing effect and a deodorizing effect.

〔Effect of the invention〕

As described above, the present invention arranges a discharge electrode and a dust collection electrode to face each other, and collects dust by ionizing dust by corona discharge.
A frame body is provided, a guide slit is provided on the inner side wall of the frame body, a discharge electrode and a dust collection electrode are inserted and arranged facing each other in the guide slit, and a dust collection paper is placed on the dust collection electrode surface on the discharge electrode side. A holding plate was provided to sandwich the discharge electrode and to be perpendicular to the discharge electrode, and the collection paper was supported by this holding plate. Therefore, it is possible to prevent the collection paper from bending and coming into contact with the discharge electrode, thereby preventing the corona discharge between the dust collection electrode and the discharge electrode from being inhibited, and since the collection part is made of paper, it is economical. The greatest feature of the air purifier according to the present invention is that newspapers, weekly magazines, and commercially available paper can be used as the paper to collect dust and the like.

In addition, in order to avoid the size cut of the collecting paper, the convenience will be further increased if the size of the collecting paper is adjusted to B5 size weekly magazine or B5 copy paper.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing a schematic configuration of an apparatus showing an embodiment of the present invention. Figure 2 is X-Y in Figure 1
3 is a diagram illustrating the state of dust adhesion, FIG. 4 is a plan view of the discharge electrode, and FIG. 5 is a plan view showing a modification of the discharge electrode. 1... Discharge electrode, 2... Dust collection electrode, 3... Frame, 4
... Guide slit, 5 ... Collection paper, 6 ... Holding plate, 7 ... Prefilter, 8 ... Deodorant filter,
9...Blower fan.

Claims (1)

[Scope of Claims] 1. A device that collects dust by ionizing dust by corona discharge by arranging a discharge electrode and a dust collection electrode to face each other, comprising a frame, and an inner side wall of the frame. A guide slit is provided in the guide slit, and the discharge electrode and the dust collection electrode are inserted and arranged facing each other in the guide slit.The dust collection paper is placed along the dust collection electrode surface on the discharge electrode side, and the discharge electrode is held between the two. An air purifier characterized in that a holding plate is provided perpendicularly to the discharge electrode, and the collecting paper is supported by the holding plate.