JPH0544221U - Electrostatic air purifier - Google Patents

Abstract

(57) [Summary] [Object] An object of the present invention is to provide an electrostatic air cleaning device configured to easily cut and wind dust collecting paper that adsorbs dust in the air. [Structure] In an electrostatic air purifying device, a dust collecting paper 18 is wound around a dust collecting electrode 16 provided on the outer periphery of a roll housing portion 15, and an ion wind is generated by discharge between both electrodes to collect dust in the air. Adsorb to the dust paper 18. A cutter 24 for cutting the dust collecting paper 18 is provided on the outer periphery of the roll housing portion 15, and the cutter 24 also has a function of locking the end portion of the dust collecting paper 18 pulled out from inside the roll housing portion 15.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an electrostatic air purifier, and more particularly to an electrostatic air purifier configured to adsorb dust in the air onto dust collecting paper by using ionic wind.

[0002]

[Prior Art]

 As a conventional electrostatic air purifying device, there is, for example, a device disclosed in Japanese Utility Model Application Laid-Open No. 2-100659 (see FIG. 5 of the publication) previously proposed by the applicant.

This electrostatic air purifier is provided with an ionization electrode (cathode) for ionizing dust particles floating in the air and a dust collecting electrode (anode) for adsorbing ionized particles, A dust collecting paper is interposed between both electrodes so as to cover the surface of the dust collecting electrode, and the ionized dust is attached to the surface of the dust collecting paper. When the potentials are set on both electrodes, lines of electric force are generated from the ionization electrode to the dust collection electrode, which causes an ionic wind flowing between the electrodes. Due to this ion wind, ambient air flows into the device, passes through the surface of the dust collecting paper, and flows out to the outside. When dust in the air flowing into the equipment comes into contact with gas ions and electrons generated by electric discharge, it is negatively charged and moves toward the dust collecting electrode side to adhere to the dust collecting paper.

The dust collecting paper is wound in a roll shape and is stored in a cylindrical roll storage portion. A dust collecting electrode is formed on the outer circumference of the roll housing portion, and the dust collecting paper pulled out from the paper outlet of the roll housing portion is wound around the dust collecting electrode. Also, since the dust collecting paper wound in a roll is provided with perforations at intervals of one round of the roll storage part, when the dust collecting paper is soiled and replaced, the used part is It can be easily cut with the eyes, and new dust collecting paper is pulled out from the paper outlet of the roll storage section. Then, the roll storage part is locked to the roll storage part by a stopper.

[0005]

[Problems to be solved by the device]

 In the above conventional device, it is necessary to prepare roll-shaped dust collecting paper with perforations, and moreover, a dedicated dust collecting paper roll having perforations at intervals according to the outer circumference of the roll storage part must be manufactured. I have to.

Further, when a dust collecting paper roll without perforations is used, the used dust collecting paper is torn off by hand or with a blade such as a scissors, and the dust collecting paper replacement operation is performed. Was troublesome. Furthermore, since a metal fitting for locking the newly drawn dust collecting paper to the outer circumference of the roll storage part is provided separately from the roll storage part, the work of locking the dust collecting paper with the stopper is not only troublesome, but also a stop. In some cases, the metal fittings could be lost, and in that case, the dust collection paper could not be locked on the outer circumference of the roll storage part, making it unusable.

Therefore, the present invention aims to provide an electrostatic air purifying apparatus that solves the above problems.

[0008]

[Means for Solving the Problems]

 According to the present invention, the dust collecting paper pulled out from the paper outlet of the roll accommodating portion is wrapped around the dust collecting electrode on the outer circumference of the roll accommodating portion, and dust in the air is generated by the discharge between the ionizing electrode and the dust collecting electrode. In the electrostatic air purifying device for adsorbing the dust collecting paper to the dust collecting paper, a cutter for cutting the dust collecting paper drawn out from the paper outlet is provided on the outer periphery of the roll storage part, and the roll drawn out from the paper outlet is provided. A pressing member is provided to press the cutter against the outer circumference of the roll storage section so as to hold the end of the dust collecting paper wound around the outer circumference of the storage section.

[0009]

[Action]

 Perhaps because the cutter is provided on the outer circumference of the roll storage part, the dust collecting paper can be easily cut, and it is possible to use the dust collecting paper roll without perforations. Further, since the cutter can also be used as a paper retainer, the end of the newly drawn dust collecting paper can be easily locked.

[0010]

【Example】

 1 to 4 show an embodiment of an electrostatic air purifying device according to the present invention.

In each of the drawings, the electrostatic air purifying device is provided with a dust collecting unit 2 on the upper part of the device main body 1, and a cup-shaped cover 3 covering the periphery of the dust collecting unit 2 is attached to the upper part of the main body 1. Become.

A fan 6 for blowing air is provided between the bottom portion 4 of the main body 1 and the base 5 on which the dust collecting unit 2 is placed. The fan 6 is provided so as to be located in the flow path 22 between the lower end of the cover 3 and the bottom 4 through which the air flows from the air holes 5a of the base 5, and has an impeller 6b having a plurality of blades 6a and a main body. 1 and a motor 6c (indicated by a broken line in FIG. 1) for rotating and driving the impeller 6b.

A power switch 7, a fan start switch 8 for the fan 6, a timer 9, and a power lamp 10 are arranged on the front surface 1a of the main body 1. The fan start switch 8 is a slide switch, and can be switched to off, weak wind, and strong wind modes.

The cover 3 has a cup-shaped outer periphery on which lattice-shaped ribs 3a extending in the vertical direction and air inflow slits 3b formed between the ribs 3a are alternately formed at a constant pitch. A locking mechanism 12 is provided on the upper portion 3c of the cover 3 for holding the upper end of a shaft 11 standing upright in the center of the main body 1 and locking the cover 3 to the main body 1.

A band-shaped ionization electrode (cathode) 13 is attached to the inner wall 3d of the cover 3 over the entire circumference. The ionization electrode 13 has a large number of linear projections 13a protruding obliquely upward and downward so that corona discharge is likely to occur.

The ionization electrode 13 is connected to a male connector 14 protruding from the lower end of the cover 3 as shown in FIG.

The dust collection unit 2 has a substantially cylindrical roll storage portion 15 standing upright on the base 5, a mesh-shaped dust collection electrode (anode) 16 wound around the outer periphery of the roll storage portion 15, and a roll. The dust collecting paper 18 is drawn out from the dust collecting paper roll 17 housed in the housing portion 15 and wound around the outer circumference of the dust collecting electrode 16. The roll accommodating portion 15 has a plurality of ventilation holes 15a on the outer periphery thereof, and as shown in FIG. 5, a paper withdrawing port 23 for extracting the dust collecting paper 18 to the outside is formed on the outer periphery of the roll accommodating portion 15. ..

The dust collecting electrode 16 is formed on the entire circumference of the roll accommodating portion 15 of the dust collecting paper 18 excluding the paper draw-out port 23. The paper outlet 23 is composed of an elongated slit 23a extending in the vertical direction, and an arcuate recess 23b notched in the paper withdrawing direction at the center of the slit 23a. When pulling out the dust collecting paper 18, it is possible to easily pull out by inserting a fingertip into the concave portion 23b.

A fitting portion 15b into which the core 17a of the roll 17 fits is projected from the bottom of the roll housing portion 15.

Reference numeral 19 denotes a disc-shaped roll retainer, which has a central hole 19a through which the shaft 11 penetrates in the center, and a seal member 20 for sealing between the inner wall 15c of the accommodating portion 15 and the outer periphery is fitted. There is. Therefore, the roll retainer 19 abuts on the upper surface of the roll 17 and holds the roll 17 so as not to move up and down, and prevents the dust-free air in the upper portion of the storage portion 15 from being sucked by the activation of the fan 6. .

A cutter 24 is made of, for example, a synthetic resin and is rotatably provided on the outer periphery of the roll storage portion 15 so as to cover the paper outlet 23. The cutter 24 is formed in a U-shape when viewed from above, and has a support portion 24b having an upper end and a shaft 24a on the lower surface, and an acute-angled paper pressing portion 24c that abuts the dust collecting paper 18 at the other end. Further, the connecting portion 24d for connecting both ends of the cutter 24 extends so as to laterally bridge the outer side separated by the roll accommodating portion 15.

As shown in FIGS. 6 to 9, the shaft 24 a of the cutter 24 is fitted and supported by a pair of bearing portions 25 projecting from the outer circumference of the roll accommodating portion 15. The distance between the pair of bearings 25 is smaller than the outer diameter of the shaft 24a, and an arcuate recess 25a corresponding to the outer periphery of the shaft 24a is formed. Therefore, the shaft 24a of the cutter 24 is clamped from both sides while being fitted in the arcuate recesses 25a of the pair of bearings 25, and is rotatably held. Further, a quadrangular contact portion 24e projects from the support portion 24b near the shaft 24a.

The cutter 24 is pressed against the roll storage portion 15 by a pair of leaf spring-shaped pressing portions 26 extending from the roll storage portion 15. Further, the pressing portion 26 is made of an elastic synthetic resin, and the tip portion thereof abuts against the lower surface of the abutting portion 24e of the cutter 24 to press the same, and the cutter 24 has the paper pressing portion 24c at the tip thereof in the roll accommodating portion 15. It is pressed and held in the direction A so as to abut.

Here, the replacement work of the dust collecting paper 18 will be described.

The used dust collecting paper 18 wrapped around the outer circumference of the roll storage portion 15 is cut along the paper pressing portion 24 c of the cutter 24.

When the unused dust collecting paper 18 is pulled out from the dust collecting paper roll 17, the cutter 24 is rotated so that the paper pressing portion 24 c of the cutter 24 is displaced in the direction B away from the roll accommodating portion 15. In this state, the dust collecting paper roll 17 is pulled out from the dust collecting paper outlet 23.

In this way, the dust-collecting paper 18 drawn out from the paper-drawing port 23 is wound around the entire circumference of the roll accommodating section 15 as shown in FIG. 10, and its leading end 18a is folded back in the opposite direction. The cutter 24 is clamped between the paper pressing portion 24c of the cutter 24 and the outer circumference of the roll storage portion 15.

As described above, the cutter 24 cuts the used dust collecting paper 18 and also functions as a paper pressing member that locks the end portion 18 a of the unused dust collecting paper 18.

Therefore, it is not necessary to perforate the dust collecting paper 18 and inexpensive commercially available roll paper (for example, toilet paper) can be used, and the used dust collecting paper 18 can be easily used without scissors. It can be cut to a predetermined length. Further, since the end portion 18a of the dust collecting paper 18 is locked by the cutter 24 provided in the roll storage portion 15, it is not necessary to use a separate stopper fitting as in the prior art, and it can be locked easily and is likely to be lost. Absent.

The periphery of the dust collecting unit 2 having the above configuration is covered with the cover 3. When the cover 3 is attached to the main body 1, the male connector 14 protruding from the lower end of the cover 3 is attached so as to be fitted to the female connector 21 (shown by a broken line in FIG. 3) provided on the support portion 1b at the rear of the main body 1. And is locked to the shaft 11 by the locking mechanism 12.

When the power switch 7 is turned on, for example, −7 kv is applied to the ionization electrode 13 and +7 kv is applied to the mesh-shaped dust collecting electrode 16. As a result, lines of electric force are generated from the ionization electrode 13 toward the dust collecting electrode 16. At that time, since the dust collecting electrode 16 is formed on the entire circumference of the cylindrical roll accommodating portion 15, lines of electric force from the ionization electrode 13 are generated toward the entire outer circumference of the roll accommodating portion 15. Therefore, the dust collection efficiency is higher than before.

When lines of electric force are generated between the ionization electrode 13 and the dust collecting electrode 16 as described above, ion wind as indicated by an arrow in FIG. 1 is generated. Therefore, the air around the cover 3 passes through the slit 3b and flows into the inside of the cover 3, and further passes through the dust collecting paper 18 wound around the outer circumference of the dust collecting electrode 16 and the slit 15a of the roll accommodating portion 15. Then, it flows into the inside of the roll storage section 15.

That is, since the ionization electrode 13 has a plurality of linear protrusions 13a, the discharge is easily started by a high voltage, and when gas ions or electrons generated by the discharge come into contact with dust, the dust is negatively charged. The negatively charged dust (ionized dust) moves toward the dust collecting electrode 16 having a higher potential than the ionizing electrode 13. Since dust collecting paper 18 is wound around the dust collecting electrode 16, dust in the air adheres to the dust collecting paper 18.

Therefore, the clean air from which the dust has been removed passes through the dust collecting paper 18 and flows into the inside of the roll storage portion 15, and further passes through the ventilation hole 5 a of the base 5 and the lower end of the cover 3 and the bottom portion of the main body 1. 4 passes through the flow path 22 formed between them and diffuses to the surroundings.

However, since only a small amount of air is sucked in by the ion wind, when the air cleaning device is installed in a large room, the fan start switch 8 is slid to the “weak” position. As a result, the impeller 6b of the fan 6 is rotationally driven, and the air around the cover 3 is forcibly sucked by sucking the air in the roll storage portion 15 downward.

As a result, the amount of air sucked in is increased and the dust adsorption efficiency is higher than in the case of only the ion wind described above.

When the room air is cleaned in a shorter time, the fan start switch 8 is slid to the “strong” position. As a result, the impeller 6b of the fan 6 rotates at a higher speed, and the amount of air sucked into the device from around the cover 3 increases, so that the air in the room can be cleaned in a short time even in a large room.

As described above, the amount of air sucked into the device can be increased / decreased step by step by switching the fan start switch 8 off, weak, and strong. Therefore, depending on the size of the room or the degree of air pollution. The air suction amount can be adjusted by activating the fan 6, and the air in a large room can be efficiently cleaned by activating the fan 6.

[0039]

[Effect of the device]

 As described above, the electrostatic air purifier according to the present invention is provided with the cutter on the outer circumference of the roll storage section and the pressing member for pressing the cutter against the outer circumference of the roll storage section. Since it can be cut into pieces, it is possible to use commercially available roll paper without perforations, and it is possible to cut the dust collection paper pulled out from the roll storage unit to a prescribed length without scissors. .. Further, since the cutter can lock the end of the dust collecting paper wound around the roll storage part, it is not necessary to prepare a separate metal stopper, and the dust collecting paper can be easily engaged without being lost. It has features such as being able to stop.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of an embodiment of an electrostatic air cleaner according to the present invention.

FIG. 2 is a front view of the electrostatic air purifier shown in FIG.

FIG. 3 is a side view showing a main body and a dust unit with a cover removed.

FIG. 4 is a side view of the cover.

FIG. 5 is an enlarged perspective view showing a main part of the present invention.

FIG. 6 is a cross-sectional view of a roll storage section.

FIG. 7 is a view showing a bearing that supports a cutter.

FIG. 8 is a cross-sectional view showing a cutter and a pressing portion.

FIG. 9 is a side view showing a cutter and a pressing portion.

FIG. 10 is a cross-sectional view showing an enlarged main part of the present invention.

[Explanation of symbols]

 1 Device Main Body 2 Dust Collection Unit 3 Cover 4 Bottom 5 Base 6 Fan 7 Power Switch 8 Fan Start Switch 12 Locking Mechanism 13 Ionizing Electrode 15 Roll Storage Section 16 Dust Collection Electrode 18 Dust Collection Paper 19 Roll Presser 23 Paper Drawout 24 Cutter 25 Bearing 26 Pressing part

Claims (1)

[Scope of utility model registration request] 1. A dust collecting paper pulled out from a paper outlet of a roll accommodating portion is wound around a dust collecting electrode on the outer circumference of the roll accommodating portion, and dust in the air is discharged by discharge between the ionizing electrode and the dust collecting electrode. In an electrostatic air purifying device for adsorbing dust collecting paper, a cutter for cutting the dust collecting paper drawn out from the paper outlet is provided on the outer periphery of the roll housing, and the roll housing outer periphery is drawn out from the paper outlet. An electrostatic air purifying apparatus comprising a pressing member that presses the cutter against the outer circumference of the roll accommodating portion so as to hold the end of the dust collecting paper wound around the roller.