JPH04187253A - Air cleaner - Google Patents

Abstract

PURPOSE:To reduce turbulance of an ionization sphere and to enhance dust collection efficiency by equipping a preliminary charge part which is constituted of a discharge electrode impressed with high voltage, the cover of this discharge electrode and an earthed counter electrode and electrifies dirt in the air, a dust collection filter for collecting dirt and a filter for attracting and relaxing odor. CONSTITUTION:When high voltage is impressed to a discharge electrode 1, corona discharge is caused in the circumference of this discharge electrode 1. Tons having the same polarity as the discharge electrode 1 are generated and the lines of ionization are formed toward a counter electrode 4 and an ionization sphere is formed. When the cover 3 of a discharge electrode is ordinarily provided to the upper part of the discharge electrode 1, the ionization sphere is disturbed and the dust collection is deteriorated by about 10-20%. The lines of ionization are formed toward an electrostatic filter 109 and a deodorization filter 110 which are grounded to the earth by providing an aperture part 2 to the cover 3 of the discharge electrode in the upper part of the discharge electrode 1. Turbulence of the ionization sphere is reduced. When the air incorporating dirt is introduced into the ionization sphere of this preliminary charge part 5, the dirt in this air is easily ionized and more attracted to the electrostatic filter 109. Thereby purification is performed in a short time.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an air cleaner that removes foreign substances from the air and purifies the air.

BACKGROUND OF THE INVENTION In recent years, as buildings have become more airtight and awareness of hygiene has improved, air purifiers have come into widespread use.

The configuration of a conventional air cleaner of this type will be explained with reference to FIGS. 3 and 4.

As shown in the figure, dust in the indoor air sucked in from an intake grill 101 is removed from a discharge electrode 102, such as a discharge wire applied to a high voltage, and a grounded wire placed parallel to the air flow. After being ionized in a preliminary charging section 105 consisting of a counter electrode 103 and a discharge electrode cover 104 that prevents the discharge electrode from being easily touched during cleaning, it is placed on the suction side of a blower device 108 consisting of a blade 106° motor 107, etc. Foreign matter in the air is collected when passing through the installed electrostatic filter 109, and this electrostatic filter 10
A deodorizing filter 110 disposed integrally with the deodorizing filter 110 adsorbs and removes bad odors in the passing air, and the purified air is blown into the room from the blowing grill 111 by the blowing device 108. At this time, when the pre-charging section 105 applies a DC high voltage 112 to the discharge electrode 102 as shown in FIG. 4, corona discharge is generated around the discharge electrode 102.
Ions with the same polarity as the discharge electrode 102 are generated on the outer periphery to form an ionized sphere, and the dust in the indoor air that is sucked in attracts these ions and becomes electrically charged. It was configured to collect by Coulomb force.

Problems to be Solved by the Invention In the configuration of such a conventional air purifier, the pre-charging section 1
In 05, since the discharge electrode cover 104 is provided near the discharge electrode 102, the ionization sphere is disturbed by the corona discharge from the discharge electrode 102, and as a result, the rate at which particles are charged is reduced, and the electrostatic filter 109 is reliably charged. The problem was that they had a low ability to be captured.

The present invention solves the above problems, and aims to provide an air cleaner that can reduce disturbances in the ionized sphere and improve dust collection efficiency.

Means for Solving the Problems In order to achieve the above object, the air purifier of the present invention comprises a discharge electrode to which a high voltage is applied, a discharge electrode cover that covers the discharge electrode, and a grounded counter electrode. a pre-charging section for charging dust, a dust collection filter for collecting dust, a filter for adsorbing and mitigating odors, and a blower for circulating air through the pre-charging section and the filter section; The cover has an opening above the discharge electrode.

Function: With the above-described configuration, the air cleaner of the present invention can reduce disturbance in the ionization sphere by the amount of the opening provided in the discharge electrode cover, and can sufficiently ionize and collect dust in the passing air. Dust efficiency will be improved.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to FIGS. 1 and 2. It should be noted that the present invention relates to the configuration of the pre-charging section, and the same parts as in the conventional example are given the same numbers and detailed explanations will be omitted.

As shown in the figure, there is a discharge electrode to which a high voltage of approximately 7 KV is applied, and a discharge electrode cover 3 with an opening 2 at the top of the discharge electrode 1 to prevent the discharge electrode 1 from being easily touched during cleaning. is provided between the electrostatic filter 109 and the deodorizing filter 110, and the discharge electrode 2, and the counter electrodes 4 are arranged on both sides of the discharge electrode 1 to constitute the preliminary charging section 5.

When a high voltage is applied to the discharge electrode 1 in the above configuration, a corona discharge is generated around the discharge electrode 1, ions having the same polarity as the discharge electrode 1 are generated, and an ionization line is formed toward the counter electrode 4-, which causes ionization. A category is formed. At this time, if the discharge electrode cover 3 is normally provided above the discharge electrode 1, the ionization sphere will be disturbed and the dust collection efficiency will be reduced by about 10 to 20%. By providing section 2, ionization lines are also formed toward the grounded electrostatic filter 109 and deodorizing filter 110, thereby reducing turbulence in the ionization sphere, and dust-laden air is transferred to this reserve. When dust in the air enters the ionization zone of the charging section 5, it becomes more likely to be ionized (and is more likely to be adsorbed to the electrostatic filter 109, and the dust collection efficiency will be 10 to 15% compared to when there is no opening 2).
%improves. Further, the air from which dust has been removed is further deodorized by a deodorizing filter 110 to purify the air.

Effects of the Invention As is clear from the above embodiments, according to the present invention, since the discharge electrode cover is provided with an opening above the discharge electrode, disturbances in the ionization sphere are reduced and dust is sufficiently ionized. It is possible to provide an air purifier that can perform purification in a short time because the dust collection efficiency can be increased.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing the state of the pre-charging section of an air purifier according to an embodiment of the present invention, Fig. 2 is a plan view of the discharge electrode cover of the air purifier, and Fig. 3 is a conventional air purifier. FIG. 4 is a cross-sectional view showing the state of the pre-charging section of the air cleaner. 1...discharge electrode, 2...opening, 3.
...Discharge electrode cover, 4...Counter electrode,
5... Preliminary charging unit, 108... Air blower, 109... Electrostatic filter, 110...
...Deodorizing filter. −〇 −

Claims (1)

[Claims] A pre-charging unit consisting of a discharge electrode to which a high voltage is applied, a discharge electrode cover that covers the discharge electrode, and a grounded counter electrode that charges dust in the air, a dust collection filter that collects dust, and an odor adsorption An air purifier comprising: a filter for relaxing the air; and a blowing device for circulating air flow through the pre-charging section and the filter section, and having an opening above the discharge electrode of the discharge electrode cover.