JPH11276568A - Air cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air cleaner that can completely deodorize and remove dusts over a large room and has both functions of deodorization and removal of dusts besides the volume of blowing air through its shape is rather compact. SOLUTION: On this air cleaner, an air cleaning part 8 that has functions of deodorization or removal of dusts is arranged to cover the whole of or a part of a circulating path's surface with which the air that has not been cleaned or is being cleaned comes into contact. This air cleaning part 8 is composed of an absorptive filter, e.g. an electret filter or an activated carbon filter and so on, furthermore, it is preferred that the filter is plated or made from porous material like corrugate. In addition, if necessary, photocatalyst 6 and light source 5 that excites the photocatalyst on the downwind side of the air cleaning part are mounted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air purifying apparatus used for removing odor, dust and the like in various buildings such as homes, offices, and passenger compartments.

[0002]

2. Description of the Related Art As an air purifying apparatus used for removing odorous substances such as bad smells and dusts in buildings and the like, a system in which a filter is ventilated for the purpose of deodorization and dust removal is known. Because the air volume decreases due to the pressure loss of the filter,
There was a problem that it was difficult to achieve dust removal.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide an air purifier that achieves both deodorizing performance or dust removing performance and air volume and can achieve deodorizing or dust removing over a wide room, despite its relatively compact shape. It is to provide a chemical conversion device.

[0004]

Means for Solving the Problems The present inventors have made intensive studies to solve the above problems, and as a result, have reached the present invention.

(1) In an air purifying apparatus for purifying while flowing air, an air purifying member is provided so as to cover all or a part of a surface of a flow path with which air before or during cleaning comes into contact. An air cleaning apparatus, wherein the air cleaning member is installed and air before or during cleaning comes into contact with the air cleaning member.

(2) The air purifying apparatus according to the invention (1), wherein the air purifying member comprises an adsorptive filter such as an activated carbon filter.

(3) An air purifying apparatus according to the invention (1) or (2), wherein the air purifying member comprises an electret filter.

(4) In the above invention (1), (2) or (3), the air purifying member is a porous body such as a honeycomb or a corrugate or a pleated air. Purification equipment.

(5) The above inventions (1), (2) and (3)
Or in (4), an air purification device, wherein a photocatalyst and a light source that excites the photocatalyst are installed downstream of the air purification member.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention provides an air purifying apparatus which can achieve both deodorizing performance or dust removing performance and air flow, and which can achieve deodorizing or dust removing over a large room despite its relatively compact shape. I do.

An air purifying apparatus according to the present invention is an air purifying apparatus for purifying air while circulating air, so as to cover all or a part of the surface of a flow path with which air before or during cleaning comes into contact. An air cleaning member is installed in the air cleaning member, and air before or during cleaning comes into contact with the air cleaning member. The air cleaning member is preferably made of an adsorption filter such as an activated carbon filter or an electret filter, and more preferably a porous body such as a honeycomb or corrugate, or a pleated shape. Further, a photocatalyst and a light source for exciting the photocatalyst are installed downstream of the air cleaning member.

According to the present invention, the surface of the flow path with which the air before or during the cleaning comes into contact is the inner surface of the inlet duct for sucking the contaminated air to the air cleaner, the inner wall or the inside of the casing of the air cleaning device. The surface of the barrier. In the present invention, the flow path whose surface is covered with the air cleaning member is preferably diffracted or meandered appropriately within a range that does not significantly impair the flow of air, and the chance of contact with contaminated air is preferred. And the air cleaning effect such as dust removal and deodorization is improved.

The air purifying member according to the present invention is a member for removing harmful substances from contaminated air to purify the air, and includes a dust removing filter, a deodorizing filter, an antibacterial filter and the like. It may be a composite of filters. In particular, it is preferable to dispose a dust-removing air purifying member near the intake port where the dirty air comes into contact initially, and to dispose a dust-removing deodorizing air purifying member on the leeward side thereafter. The air purifying member of the present invention basically does not ventilate and, in order to allow air to come into contact with the surface, is preferably an adsorption filter such as an electret filter as a dust removing filter and an activated carbon filter as a deodorizing filter, and adsorbs with the electret filter. More preferably, it is a composite of filters.

The shape of the air cleaning member of the present invention should be a porous body such as a honeycomb or corrugate, or a pleated shape in order to increase the chance of contact with contaminated air and enhance air cleaning performance. Is preferred. It is also desirable that the mechanism be removable so that it can be replaced when the dust removal or deodorizing effect is reduced or when the dust and dirt are contaminated.

The photocatalyst according to the present invention is 0.5 to 5e
V, preferably a photoreactive semiconductor that provides a photocatalytic reaction with a band gap of 1-4 eV. Examples of such a photocatalyst according to the present invention include metal oxide particles such as zinc oxide, tungsten oxide, titanium oxide, and cerium oxide. In particular, titanium oxide has structural stability and photoreactive harmful substance removal. The photocatalyst according to the present invention is most suitable for use in a living space because of its performance and safety in handling, and is advantageously used as a photocatalyst according to the present invention.

The photocatalyst member according to the present invention is preferably a member carrying a photocatalyst or a member comprising a photocatalyst, which contains an adsorbent such as activated carbon and zeolite in addition to the photocatalyst. It is preferably a member made of a sheet. The shape of the photocatalyst member of the present invention is a sheet-like, plate-like, corrugated plate such as a single cardboard,
It may be a porous body such as a honeycomb or corrugate, or a pleated shape.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. However, the present invention is not limited to the embodiment without departing from the spirit of the present invention.

As shown in FIG. 1, an air purifying apparatus according to an embodiment of the present invention includes a casing 3 having an intake port 1 and an exhaust port 2, a sirocco fan 4 built in the casing 3, The ultraviolet lamp 5 close to the fan and the non-ventilating photocatalyst member 6 surrounding the ultraviolet lamp 5
A shielding plate 7 against which air sucked from the air inlet collides;
The photocatalyst member 6 includes a dust-removing air purifying member 8 and a dust-removing deodorizing air purifying member 9 disposed on an inner surface of a windward casing or the like.

As shown in FIGS. 1 and 2, the dust-removing air purifying member 8 is provided on the side of the shielding plate 7 on the side of the intake port. Also,
The dust removing and deodorizing air cleaning member 9 is provided on the exhaust port side (9
a), the inside of the top surface of the casing 3 (9b), the inside of the upper side surface of the casing 3 (9c), and the surface (9d) of the non-ventilated photocatalyst member 6 opposite to the light source 5 I do.

The dust removing air purifying member 8 is formed by pleating an electret filter (manufactured by 3M), and the dust removing / deodorizing air purifying member 9 is constituted by an electret filter (manufactured by 3M) as a liner.
A corrugated molded product made of an activated carbon fiber-containing sheet (manufactured by Osaka Gas Chemical Company) as a core, and has both a dust removal function and an adsorption / deodorization function.

In the air purifying apparatus of the present invention, the air purifying members 8 and 9 having a dust removing function or a deodorizing function are brought into contact with air before or during cleaning such as an inlet duct or an inner surface of a casing. By installing so as to cover all or part of the surface of the air cleaner, the pressure loss caused by ventilating the air purification filter is small, a large air volume can be obtained in a compact shape, and dust removal or deodorization over a large room Is possible. In an air purifier that collects and treats contaminated air from various parts of the room to an air purifier via an air inlet duct, harmful substances such as dust and odorous substances adhere to the air inlet duct and contaminate the air. However, by installing an air cleaning member on the inner surface, it is possible to prevent contamination of the intake duct.

The ultraviolet lamp 5, which is surrounded by a non-ventilated photocatalyst member 6, emits a light beam for exciting the photocatalytic titanium oxide.
A germicidal lamp or the like can be used.

As shown in FIG. 2, the non-ventilated photocatalyst member 6 is composed of three plate-shaped photocatalyst members, each of which contains titanium oxide as a photocatalyst and an inorganic adsorbent as a carrier. It is a corrugated molded product of fibrous sheet (trade name: Rajit photocatalytic corrugate, manufactured by Mitsubishi Paper Mills). The fibrous sheet is provided on one side of the corrugate, and the excitation light leaking from the cell hole of the corrugate can be effectively used.

An aluminum plate 11 is attached to a portion of the casing 3 where the photocatalyst member does not exist on a surface directly irradiated with ultraviolet rays emitted from the ultraviolet lamp 5. This aims at effectively utilizing the photocatalytic excitation light emitted from the ultraviolet lamp and preventing deterioration of the casing 3 due to ultraviolet light.

With the photocatalyst member 6 and the ultraviolet lamp 5,
The deodorizing performance and the deodorizing durability performance of the air cleaning device of the present invention are improved, and the antibacterial action by the photocatalyst is added.

[0026]

According to the present invention, the air purifying member having a dust removing function or a deodorizing function is provided on the entire surface of the flow path, such as the inlet duct or the inner surface of the casing, with which air before or during cleaning comes into contact. Or, an air purifier installed to cover a part of the air purifier can obtain a large air volume in a compact shape, can remove dust or deodorize over a large room, and can prevent contamination of the flow path such as the intake duct. It is possible to prevent.

By using an electret filter, the air purifying member can achieve a high dust-removing effect due to the first collision of the inflow air, and can prevent the inner wall of the air passage from being stained. A high deodorizing effect is obtained by using a neutral filter,
Further, the air purifying member may be made of a porous material such as corrugate or a pleated shape to achieve a more excellent effect.
In addition, by installing a photocatalyst and a light source for exciting the photocatalyst downwind of the air cleaning member, the deodorizing performance and the deodorizing durability performance are improved, and the antibacterial action of the photocatalyst is added.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing one embodiment of an air cleaning device of the present invention.

FIG. 2 is a cross-sectional view of the upper surface showing one embodiment of the air cleaning device of the present invention.

[Description of Signs] 1 intake port 2 exhaust port 3 casing 4 sirocco fan 5 ultraviolet lamp 6 non-ventilated photocatalytic member 7 shielding plate 8 dust removing air cleaning member 9 dust removing deodorizing air cleaning member 10 aluminum plate

Claims (5)

[Claims] 1. An air purifying apparatus for purifying air while circulating air, wherein an air purifying member is provided so as to cover all or a part of a surface of a flow path with which air before or during cleaning is in contact. An air cleaning device, wherein air before or during cleaning comes into contact with the air cleaning member. 2. The air purifying apparatus according to claim 1, wherein said air purifying member comprises an adsorption filter. 3. The air purifying apparatus according to claim 1, wherein the air purifying member comprises an electret filter. 4. The air purifying member according to claim 1, wherein the air purifying member has a porous body or a pleated shape.
An air purifying apparatus according to item 1. 5. The air purifying apparatus according to claim 1, further comprising a photocatalyst and a light source for exciting the photocatalyst located downstream of the air purifying member.