JPS62277164A - Electrostatic air cleaner - Google Patents

Abstract

PURPOSE:To remarkably improve the dust collection efficiency and dust collecting capacity of the title cleaner by opposing an air-permeable ground electrode to an ionization electrode on the upstream side of the prefilter of an air-permeable fibrous insulator to cross the ionization electrode, and forming a high-electric field part on the downstream side. CONSTITUTION:The air-permeable ground electrode 7 is provided on the upstream side of the preheater 8 of an air-permeable fibrous insulator, and opposed to the ionization electrode 1 on the downstream side in the electrostatic air cleaner for household and an automobile. The ionization electrode 1 is allowed to cross the counter ground electrode 7 and passing air, and the high-electric field part is further formed on the downstream side. The dust is polarized by the high-electric field part before the dust-contg. air reaches the ionization electrode part. Accordingly, even considerably fine dust is electrostatically collected, extremely fine dust is charged at the ionization part and collected at the high-electric field part, and the dust collection efficiency is remarkably improved.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention Field of Industrial Application The present invention relates to an electrostatic air cleaner used for home use, automobile use, clean room use, and the like.

Conventional technology stop / I + 1 wax sales ~ German A volume Suichizo Zuha bamboo ^ mouth φ mouth φ mouth will explain.

101 is an ionization electrode, 102 is a counter electrode, a high voltage is applied between the ionization electrode 1 and the counter electrode 1020, and an ion current flows. 103 is a charged filter made of a nonwoven fabric of charged fibers, and 104 is an activated carbon. The filter is grounded. 105 is a fan that blows air by a motor 106, 107 is a grounding plate made of a breathable wire mesh, and supports the electrostatic shielding and pre-filter 108. 109 is an air intake port, and 110 is a grounding plate. Air outlet, 111 is the case,
112 is a high voltage power supply.

The charged filter 103 has electrically charged fibers entangled in a complicated manner, as shown in detail in FIG.

When operated in this configuration, dust-containing air flows into the intake port 10.
9, coarse dust is removed by a pre-filter 108, and when it reaches the ionization electrode 101, fine dust is charged by the ion current. When charged dust flows into the charged filter 103, it receives an electrostatic force due to the local high electric field inside the filter, and is attracted to the fiber surface and trapped. - The air is deodorized and becomes clean air, which is then sent out from the air outlet 110.

Problems to be Solved by the Invention When dust is collected on the charged filter 103, the high electric field due to charging is partially lost due to the good conductivity of the dust, resulting in no electric field. For this reason, the dust collection efficiency deteriorates early and it is difficult to obtain dust collection efficiency above a certain level.

Means for Solving the Problems The present invention provides a structure in which a breathable ground electrode is disposed upwind of a pre-filter, the pre-filter is made of a breathable fibrous insulator, and is opposed to an ionizing electrode on the leeward side. The ionizing electrode is arranged to face the counter ground electrode across the passing wind, further forming a high electric field part on the leeward side, and using nonwoven fabric, glass fiber, or foam material as the breathable fiber insulator. It is.

Operation The present invention has the above-mentioned configuration, and by forming a high electric field part in a part of the pre-filter before the dust-containing air reaches the ionization electrode part, the dust is polarized and even a considerable amount of fine dust can be electrostatically collected. By charging ultrafine dust in the ionization section and collecting it in the high electric field section at the rear, the dust collection effect is greatly improved.

Embodiment FIG. 1 is a sectional view of an electrostatic air cleaner of the present invention, and FIG. 2 is a partially enlarged view of an ionizing electrode of the electrostatic air cleaner of the present invention.

The configuration of the electrostatic air cleaner of the present invention will be explained.

(1) is an ionization electrode, (2) is a counter electrode, and (3) is a charged filter. (4) is grounded with an activated carbon filter. (5) is a fan driven by a motor (6), (7) is a breathable ground electrode made of a wire mesh provided upwind of the pre-filter (8), and (9) is an intake port, α is the air outlet, αυ is the case, and (13 is the high voltage power supply).

The operation of the electrostatic air cleaner of the present invention will be explained.

In the above configuration, when dust-containing air is taken in through the intake port (9), coarse dust is collected on the windward side of the pre-filter (8). The pre-filter (8) has an ionization electrode (1
) toward the ground potential, the surface of the ionization electrode of the prefilter (8) is charged with ten charges, and an electric field is generated between the prefilter (8) and the grounding electrode (7) as shown in Figure 2. A complex electric field and a local high electric field are formed in the space between the fibrous insulators (8). Dust sucked into this high electric field becomes polarized and collected on the surface of the insulator. Further, the dust not collected by the pre-filter (8) section is charged at the ionization electrode (1) section and collected at the high electric field section at the rear.

As an example, a charged filter (3) was used downwind of the ionizing electrode (1), but an air-permeable insulating material such as an insulating non-woven fabric (such as urethane foam or glass fiber) can also be used for ionization as shown in Figure 2. By providing a ground electrode (4) on the leeward side facing the electrode (1), a high electric field can be formed in the insulating nonwoven fabric, and similar results can be obtained.

Furthermore, if a breathable charged filter is used as the pre-filter (8), the local electric field can be made even more complex and strong, and the dust collection efficiency can be improved.

In short, it is sufficient to place a breathable insulating filter upwind of the ionizing electrode and facing the ionizing electrode, and further disposing a ground electrode upwind.

Further, the dust collection capacity was conventionally limited to an insulated filter behind the ionization electrode, but according to the present invention, the dust collection capacity inside the pre-filter is increased, thereby making it possible to extend the life.

In addition, by using the present invention, it is easy to increase the dust collection efficiency of a part of the pre-filter to 50% or more, and most of the dust collection can be done by the pre-filter, and if the pre-filter is maintained, the activated carbon Since maintenance and replacement of the expensive main filter integrated with the main filter can be greatly reduced, maintenance costs can be reduced. In addition, the dust collection capacity is greatly improved, and the maintenance cycle can be extended.

Effects of the Invention According to the present invention, a new dust collection function can be provided to the pre-filter with a simple configuration, and a two-stage dust collection mechanism can be created, greatly improving dust collection efficiency and dust collection capacity. It can have a long life.

[Brief explanation of drawings]

Figure 1 is a sectional view of one embodiment of the air purifier of the present invention, Figure 2 is a sectional view of an embodiment of the air cleaner of the present invention.
The figures show a partially enlarged detailed view of the ionization electrode shown in Fig. 1, Fig. 3 shows a sectional view of a conventional air cleaner, and Fig. 4 shows an enlarged detailed view of a conventional charged filter.

Claims (2)

[Claims] (1) A breathable ground electrode is disposed upwind of the prefilter, the prefilter is made of a breathable fibrous insulator, and is disposed so as to face the ionization electrode on the leeward side, and the ionization electrode is counter grounded. An electrostatic air purifier that has electrodes facing each other across the passing wind, and further forms a high electric field area on the leeward side. (2) The electrostatic air cleaner according to claim 1, wherein a nonwoven fabric, glass fiber, or foam material is used as the breathable fibrous insulator.