JP2005199874A - On-vehicle type air cleaning device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide effects of cleaning, anti-bacterial, sterilization and deodorization of contaminated air by an on-vehicle type air cleaning device by utilizing the characteristic that when titanium oxide or the like is irradiated with UV ray (light), an organic substance in atmosphere and water is sometimes oxidized/decomposed by a photocatalyst reaction. <P>SOLUTION: The on-vehicle type air cleaning device is constituted by a take-in port 5 for contaminated air sucked or press-fitted to the inside of a device body by a fan 12; a light source 2; a photocatalyst filter 8; a reflection plate 9; an activated charcoal filter 10; and a discharge port 11 for cleaned air. The photocatalyst filter 8 is provided with a catalyst surface 17 formed on an inner surface of a passage 4 and receiving a light flux irradiated from the light source 2 as a parallel light; and a plurality of materials 18, 19, 20 having a shape for reflecting the light flux from the light source 2 to a direction crossing to the passage 4. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention utilizes the fact that when titanium dioxide or the like is irradiated with ultraviolet rays (light), organic matter in the atmosphere or water may be oxidatively decomposed by a photocatalytic reaction. It is intended to obtain effects such as antifouling (self-cleaning), antifogging (superhydrophilic), antibacterial, sterilizing, and deodorizing.

  The configuration shown in FIG. 12 is a conventional method in which the surface (contact surface) 1 coated or coated with titanium dioxide is directly irradiated with sunlight or directly with the light source 2 that generates ultraviolet rays or the like with a fluorescent lamp or the like. The contaminant is moved and contacted in parallel along the catalyst surface.

  The configuration shown in FIG. 13 is a method of directly irradiating a light source 2 that generates ultraviolet rays or the like with a fluorescent lamp or the like inside a cylindrical shape with a surface 1 coated or coated with titanium dioxide or the like inside in a conventional example. The substance moves and contacts in parallel along the surface 1.

FIG. 14 shows a conventional example in which a plurality of surfaces 1 coated or coated with titanium dioxide or the like are arranged on both sides, and a light source 2 that generates ultraviolet rays or the like is installed in the middle, and both sides are directly irradiated. is there.
JP 2002-253664 A

  Titanium dioxide-coated or coated material (catalyst material) is expensive. Except when using sunlight, the catalyst material is irradiated with ultraviolet rays of the wavelength necessary for the photocatalytic reaction at night and in places not exposed to sunlight. If it is going to do, many light sources which generate | occur | produce an ultraviolet-ray will be needed. Naturally, the price is also expensive, and the products manufactured using these materials become expensive. Also, a wider space for the light source is required, and a large amount of power for the light source is also required. Therefore, a structure that efficiently irradiates ultraviolet rays with a small number of light sources and a small amount of power is required for titanium dioxide as a catalyst.

  Light sources that generate ultraviolet rays are expensive, so the number used is reduced, the ultraviolet rays from the light sources are converted into parallel light by an internal mechanism, transmitted to a longer distance, and refracted and reflected to efficiently irradiate the catalyst surface with ultraviolet rays This is an attempt to propose a vehicle-mounted air purifier.

  According to the present invention, the number of light sources that generate relatively expensive ultraviolet rays is reduced, the ultraviolet rays from the light sources are converted into parallel light, transmitted through a longer distance, and the ultraviolet optical axis is bent and reflected to improve efficiency. In particular, it is possible to irradiate the catalyst surface with ultraviolet rays, and as a vehicle-mounted air cleaning device, it exhibits a suitable action.

  1 (a), (b) and (c), (a) is an overall layout of the vehicle-mounted air cleaning device of the present invention, and (b) is an end view of the intake portion of (a). (C) is an end view of the discharge port portion of (a). A pre-filter 6 is formed inside the inlet 5 in the passage 4 of the apparatus main body 3, and thereafter the room is divided by a partition plate 7, and the light source 2, the photocatalytic filter 8, and the activated carbon filter are provided in one of the chambers. 10 and a fan 12 on the discharge port 11 side are sequentially disposed, and a negative ion generator 13 and a fan 14 on the discharge port 11 side are formed in the other chamber. Contaminant of polluted air sucked from the intake port 5 by the fan 12 is collected by the prefilter 6 and relatively large dust floating in the air is irradiated by the light source 2 that generates ultraviolet rays. Harmful gases and bacteria are separated by the filter 8, deodorized and deodorized by the activated carbon filter 10, and discharged from the outlet 11 by the fan 12. In this case, the activated carbon filter 10 may be installed between the pre-filter 6 and the photocatalytic filter 8.

  Although the fan 12 and the fan 14 have been shown to be based on the suction action, they can be configured by press-fitting in practice. Further, as the light source 2, a fluorescent lamp, a black light, a photochemical lamp, a cold cathode fluorescent lamp, or the like is adopted.

  FIG. 2 is a schematic diagram of an electronic circuit of the in-vehicle air purifier according to the present invention, and the electronic control unit performs the following control. That is, inverter base control for ultraviolet light source, negative ion generator control, first fan control, second fan control, low voltage cutoff control (11.5V), and low voltage cutoff control (10.5V).

  FIG. 3 shows the basic structure of the above-described photocatalytic filter 8, and a catalyst surface 17 in which, for example, titanium dioxide is applied or coated on the inner surfaces of the upper and lower walls 15 and the side walls 16 (described later) of the punched aluminum plate. Arrange it so that it is inside.

  The plurality of materials 18, 19, and 20 that reflect the light flux from the light source 2 as parallel light are made of a material that does not transmit light and is made of a metal such as iron or aluminum or a synthetic resin. , 20 are round bars and polyhedrons that are formed so that the distance from the light source 2 is narrower and the distance from the light source 2 is larger, and these materials 18, 19, and 20 are displayed as three in the main part of the illustrated embodiment. However, the number can be increased or decreased as necessary. These materials 18, 19, and 20 are supported by a through hole 21 formed in the side wall 16.

  A portion 22 of the ultraviolet rays irradiated from the light source 2 that has generated ultraviolet rays as parallel light on the catalyst surface 17 passes through the materials 18 and 19 to reach the material 20 and is reflected from the material 20 to be reflected on the catalyst surface 17. Is irradiated. Further, a part 23 of the ultraviolet rays passes through the material 18, is reflected by the material 19, and is irradiated on the catalyst surface 17. A part 24 of the ultraviolet rays is reflected by the material 18 and irradiated on the catalyst surface 17, and a part 25 of the ultraviolet rays is also reflected by the front surface of the material 18. These actions are repeated.

  4 is an overhead perspective view of FIG. 3, and FIG. 5 is a stack of a plurality of photocatalytic filters 8 having the structure of FIG. The arrangement method of the generated light source 2 is common to FIGS.

  In FIG. 6 and FIG. 7, which is a perspective view of FIG. 6, the light source 2 that generates ultraviolet rays is disposed outside the photocatalytic filter 8, and the concave reflecting mirror 26 is disposed outside the light source 2. The ultraviolet rays efficiently irradiate the catalyst surface 17 by reflecting the luminous flux of the ultraviolet rays by the action of the materials 18, 19, and 20 that reflect the irradiated ultraviolet rays.

  In FIG. 8 and FIG. 9, which is a perspective view of FIG. 8, a light source 2 that generates ultraviolet rays is disposed on both sides of the photocatalytic filter 8, and concave reflecting mirrors 26 are installed on both outer sides of the light source 2. The material 18, 19, 20 having a shape that reflects the ultraviolet rays irradiated from 2 reflects the ultraviolet light flux, and the ultraviolet rays efficiently irradiate the catalyst surface 17.

  10 and FIG. 11, which is a perspective view of FIG. 10, is a concave reflector that is placed on both sides of the photocatalyst filter 8 by disposing the photocatalyst filter 8 on both sides and the light source 2 that generates ultraviolet rays at the center. 26 is installed. Thereby, the ultraviolet light axis is reflected by the action of the materials 18, 19, and 20 that reflect the ultraviolet rays emitted from the light source 2, and the ultraviolet rays efficiently irradiate the catalyst surface 17.

  In the above-described configuration, it is desirable to form an application or coating of titanium dioxide on the surfaces of the light source 2 and the materials 18, 19, and 20 for antifouling (self-cleaning).

In the overall configuration of the in-vehicle air purifying apparatus of the present invention, (a) is a layout view of the entire apparatus, (b) is an end view of the inlet portion of (a), and (c) is an outlet portion of (a). It is an end view. It is a schematic diagram of the electronic circuit of the air purifying apparatus of this invention. It is a figure which shows the basic structure of a photocatalyst filter. FIG. 4 is a perspective view of FIG. It is the figure which laminated | stacked several photocatalyst filters and made it a photocatalyst layer. It is a figure in the case of laminating a plurality of photocatalytic filters and arranging light sources at both ends. It is the figure which has arrange | positioned the light source which generate | occur | produces an ultraviolet-ray outside a photocatalyst filter, and installed the reflecting plate in the outer side of the concave reflective mirror. FIG. 7 is a perspective view of FIG. It is the figure which has arrange | positioned the light source which generate | occur | produces an ultraviolet-ray on both sides of a photocatalyst filter, and installed the concave reflective mirror in the both outer sides of the light source. FIG. 9 is an overhead perspective view of FIG. It is the figure which has arrange | positioned the light source which arrange | positions a photocatalyst filter on both sides and generates an ultraviolet-ray in the center part. FIG. 11 is a perspective view of FIG. 10. In a prior art example, it is a figure which shows the condition which directly irradiates sunlight etc. to the application | coating or coating surface (contact surface) of titanium dioxide. In a prior art example, it is a figure which shows the method of irradiating directly the light source which generate | occur | produces an ultraviolet-ray inside the cylindrical shape which apply | coated or coated the titanium dioxide inside. In a prior art example, it is a figure which shows the method of arrange | positioning several surfaces which apply | coated or coated titanium dioxide etc. on both surfaces, and generate | occur | produces an ultraviolet-ray with a fluorescent lamp etc. in the middle.

Explanation of symbols

1 surface (contact surface)
2 Light source 3 Device body 4 Passage 5 Intake 6 Pre-filter 7 Partition plate 8 Photocatalytic filter
10 Activated carbon filter
11 Discharge port
12 fans
13 Negative ion generator
14 fans
15 Upper and lower walls
16 Side wall
17 Catalytic surface
18 material
19 material
20 materials
21 Through hole
22 Part of ultraviolet rays
23 Part of ultraviolet rays
24 Part of UV
25 Part of ultraviolet rays
26 Concave reflector

Claims (7)

  A vehicle-mounted type comprising an intake port for contaminated air that is sucked or press-fitted into a passage of the apparatus body by a fan, a light source, a photocatalyst filter, a reflector, an activated carbon filter, and an exhaust port for clean air. Air cleaning device.   2. A vehicle-mounted air cleaning apparatus, comprising: a partition plate provided in a chamber of the apparatus main body according to claim 1, and a negative ion generator configured in a chamber formed by the partition plate.   The photocatalyst filter according to claim 1, wherein an intake port through which contaminated air is sucked or injected, a passage, a catalyst surface formed on an inner side wall surface of the passage, and a light beam are irradiated to the catalyst surface as parallel light. A vehicle-mounted air cleaning device comprising a light source that performs the above operation and a large number of materials that reflect the light flux. The catalytic surface according to claim 3 is formed by application or coating of titanium dioxide.
In-vehicle air purifier.   The light source according to claim 3 is a fluorescent lamp, a black light, or a photochemical lamp. An in-vehicle air cleaning device composed of a cold cathode fluorescent lamp.   The material according to claim 3 is made of a metal or synthetic resin such as iron or aluminum that reflects light without transmitting light, and the material is thinner as the distance from the light source is shorter and thicker as it is farther away. A vehicle-mounted air cleaning device that is configured as a round bar or a polyhedron that is supported by a through-hole formed in the side wall.   4. An in-vehicle air cleaning device comprising the air cleaning device according to claim 3 integrally formed in a plurality of stages.

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