JPS5899964A - Air purifier - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in an air cleaner using an electrostatic precipitator method, and aims to provide a device that is small in size and has low maintenance costs.

The configuration of a conventional air cleaner is shown in Figure 1.

101 is a casing of the air cleaner, 1o2 is an inlet for dust-containing air flow, 103 is an air outlet, 104 is a passage for dust-containing air, and 105 is a blower fan.

106 and the concave space connected to the air flow path 104, discharge #J
107 and a counter electrode 10B.
is provided. 109 is a dielectric filter, and 110 is an activated carbon filter for deodorization and ozone decomposition provided behind the dielectric filter 109.

The role of the activated carbon filter 110 in the configuration shown in L is to adsorb the bad odor that is present in the dust-containing air, and to remove ozone generated when a high voltage is applied to the discharge wire 107 and the counter electrode 108 to cause corona discharge. It's about breaking it down. When activated carbon is used for such purposes, its ability to decompose ozone generally decreases quickly, and the filter unit must therefore be replaced frequently, placing a heavy burden on the user. It is. Therefore, the present invention aims to solve the above-mentioned drawbacks of the conventional art, and embodiments thereof will be described below with reference to the drawings.

In Fig. 2, 1 is the case of the air cleaner.

2 is an inlet for dust-containing air, and 3 is an outlet. Reference numeral 4 denotes an air flow path connecting the inflow port 2 and the discharge port 3; 6, a blower fan; and 6, a concave space connected to the air flow path 4;

Reference numeral 7 denotes an ion generating section disposed within this concave space 6, which is composed of a discharge wire 87 and a counter electrode 9. A high voltage power source 10 is connected to the discharge line 8 and the counter electrode 9. Further, an ozone decomposition layer 11 made of activated carbon is provided on the inner wall surface of the recessed space 6. Furthermore, the ion generating section 7
A filter unit consisting of a dielectric filter 12 and an activated carbon filter 13 for deodorization is provided behind the.

In the above configuration, ozone generated by corona discharge in the discharge wire 8 is decomposed by an ozone decomposition layer made of activated carbon provided on the inner wall surface of the concave space 6. At this time, this ozone decomposition layer 1M does not need to adsorb bad odors,
From this, it is possible to select the optimal material and pore diameter for ozone decomposition, resulting in a long life. Furthermore, since the activated carbon filter 12 for deodorization does not need to decompose ozone, it is possible to select a material for deodorization that matches the replacement life of the filter, and it can be manufactured at low cost.

Furthermore, platinum is added to the activated carbon of the ozone decomposition layer 1.

By supporting an oxidation catalyst such as palladium, ozone decomposition performance can be improved.

As described above, according to the present invention, ozone generated by corona discharge can be effectively decomposed by creating an ozone decomposition layer made of activated carbon on the inner wall surface of the concave space facing the air flow path. There is great secondary value.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a conventional air cleaner, and FIG. 2 is a sectional view of an air cleaner showing an embodiment of the present invention. 4. Air flow path, 6. Concave space, 7. Ion generating section, 11. Ozone decomposition layer. Name of agent: Patent attorney Toshio Nakao and 1 other person w4
1fl! ll Figure 2

Claims (2)

[Claims] (1) An ion generator is provided in a concave space facing the air flow path,
This air purifier has an ozone decomposition layer made of activated carbon formed on the inner wall surface of this concave space. (2) The air cleaner according to claim 1, wherein the activated carbon layer supports an oxidation catalyst.