JP2005178644A - Air cleaning device of car mounted type - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air cleaning device of car mounted type using the effect that irradiation of titanium dioxide etc. with ultraviolet rays (light) actuates a photocatalyst reaction to result in oxidative decomposition of organic substances in the atmosphere or in the water and capable of generating such effects as purifying the contaminated air, giving resistance against germ, killing germ, deodorizing, etc. <P>SOLUTION: The air cleaning device of car mounted type is composed of an intake 2 for contaminated air sucked or pressed in by a fan 10 to the internal chamber of the device body 1, a light source 5, a photocatalyst filter 6, a reflecting board 7, an activated charcoal filter 8, and an exhaust hole 9 for purified air, wherein the photocatalyst filter 6 is equipped with a catalyst surface 14 formed on the internal side wall surface of a passage 13 and receiving the light flux cast on from the light source 5 as parallel beams, a number of material pieces 16 in shapes to allow the light flux from the source 6 to pass in the direction of intersecting the passage 13 and make irregular reflection, and a number of members 15 in which the material pieces 16 are arranged in the direction intersecting the light flux casting direction. <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) 12 coated or coated with titanium dioxide is directly irradiated with sunlight or directly with the light source 5 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 directly irradiates a light source 5 that generates ultraviolet rays or the like with a fluorescent lamp or the like on the inside of a cylindrical shape having a surface (catalyst surface) 12 coated or coated with titanium dioxide or the like in the conventional example. In the method, the contaminants are moving in parallel along the catalyst surface 12.

FIG. 14 shows a conventional example in which a plurality of materials (catalyst surfaces) 12 coated or coated with titanium dioxide or the like are arranged on both sides, and a light source 5 that generates ultraviolet rays or the like is installed in the middle, directly on both sides. Irradiation method. ,
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 an in-vehicle 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 3 is formed in the interior of the apparatus body 1 inside the intake port 2, and thereafter, the interior of the apparatus is divided by a partition plate 4. In one chamber, a light source 5, a photocatalytic filter 6, a reflector 7 and The activated carbon filter 8 and the fan 10 on the discharge port 9 side are sequentially arranged, and the negative ion generator 11 and the fan 12 on the discharge port 9 side are formed in the other chamber. Contaminant of polluted air sucked from the intake port 2 by the fan 10 is collected by the pre-filter 3 and relatively large dust floating in the air is irradiated by the light source 5 that generates ultraviolet rays, and its configuration will be described later. Harmful gases and bacteria are separated by the filter 6, deodorized and deodorized by the activated carbon filter 8, and discharged from the outlet 9 by the fan 12. At this time, the light beam from the light source 5 described later is reflected by the reflecting plate 7 disposed behind the photocatalytic filter 6. There may be a case where the activated carbon filter 8 is installed between the pre-filter 3 and the photocatalytic filter 6.

  Although the fan 10 and the fan 12 have been shown to be based on the suction action, they can be configured by press-fitting in practice. In addition, the light source 5 is configured by a fluorescent lamp, a black light, a photochemical lamp, a cold cathode fluorescent lamp, or the like.

  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 6, which is arranged on the inner wall of the passage 13 so that the catalyst surface 14 coated or coated with titanium dioxide is on the inside. A member 15 is formed in the passage 13 to form a gap that allows passage of the light beam from the light source 5, and the member 15 is sandwiched between these members 15 made of a material that is not oxidatively decomposed by a catalyst such as aluminum. On the other hand, a large number of materials 16 having a shape that transmits and diffusely reflects the light beam from the light source 5 in the crossing direction.

  These materials 16 are transmissive reflecting materials such as glass, acrylic resin, ABS, and vinyl chloride. The cross-sectional shape is a polyhedron, and one of the ultraviolet rays emitted from the light source 5 that generates ultraviolet rays as parallel light on the catalyst surface 14. The portion 17 passes through the vertical surface 18 of the material 16 having a shape that transmits and diffusely reflects, and reaches the end portion 18. The terminal portion 18 of the ultraviolet rays reached by the portion 17 of the ultraviolet rays is reflected by the reflecting plate 7 and again passes through the middle of the catalyst material. The ultraviolet ray 19 that has been transmitted and reflected through a part 18 of the ultraviolet ray is refracted by the inside 20 of the material 16 that is transmitted and diffusely reflected, irradiates the catalyst surface 14 and is reflected by the catalyst surface 14, and these operations are repeated. It is.

  Further, a part of the ultraviolet rays 21 radiated from the light source 5 is diffusely reflected by the outer slope 22 of the material 16 that is transmitted and diffusely reflected, irradiates the catalyst surface 14 and is reflected by the catalyst surface 14. As described above, by reflecting and refracting the ultraviolet optical axis, the ultraviolet rays efficiently irradiate the catalyst surface 14.

  4 is an overhead perspective view of FIG. 3, and FIG. 5 is a stack of a plurality of photocatalytic filters 6 having the structure of FIG. The arrangement method of the generated light source 5 is common to FIGS. 6 to 11 below.

  In FIG. 6 and FIG. 7, which is a perspective view of FIG. 6, a light source 5 that generates ultraviolet rays is disposed outside the photocatalytic filter 6, a concave reflecting mirror 23 is disposed outside the light source 5, and is reflected on the opposite side. By installing the plate 7, the ultraviolet rays irradiated from the light source 5 are transmitted and diffusely reflected, and the ultraviolet rays efficiently irradiate the catalyst surface 14 by reflecting and refracting the ultraviolet rays.

  In FIG. 8 and FIG. 9, which is a perspective view of FIG. 8, a light source 5 that generates ultraviolet rays is arranged on both sides of the photocatalytic filter 6, and concave reflectors 23 are installed on both outer sides of the light source 5. The material 16 shaped to transmit and diffusely reflect the ultraviolet rays irradiated from 5 causes the ultraviolet rays to be reflected and refracted, and the ultraviolet rays irradiate the catalyst surface 14 efficiently.

    In FIG. 10 and FIG. 11, which is a perspective view of FIG. 10, a photocatalytic filter 6 is arranged on both sides, a light source 5 that generates ultraviolet rays is arranged in the center, and reflectors 7 are installed on both outer sides of the photocatalytic filter 6. To do. As a result, the ultraviolet light axis is reflected and refracted by the action of the material 16 that transmits and diffusely reflects the ultraviolet light emitted from the light source 5, so that the ultraviolet light irradiates the catalyst surface 14 efficiently.

  In the above-described configuration, it is desirable to form a titanium dioxide coating or coating on the surfaces of the light source 5, the material 16, and the member 15 for antifouling (self-cleaning).

In the overall configuration of the vehicle-mounted air cleaning device of the present invention, (a) is a layout view of the entire device, (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. 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 generate | occur | produces an ultraviolet-ray in the center part, has arrange | positioned the photocatalyst filter on both sides, and installed the reflecting plate in the both outer sides of the photocatalyst filter. FIG. 11 is an overhead perspective view of FIG. In a prior art example, it is a figure which shows the condition which directly irradiates sunlight etc. to the coating or coating surface (catalyst 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 coating surface (catalyst surface) inside. In the conventional example, a method is shown in which a plurality of materials (catalyst surfaces) coated or coated with titanium dioxide or the like are disposed on both surfaces, and ultraviolet rays are generated by a fluorescent lamp or the like between them.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Apparatus main body 2 Intake port 3 Pre filter 4 Partition plate 5 Light source 6 Photocatalyst filter 7 Reflector plate 8 Activated carbon filter 9 Outlet 10 Fan 11 Negative ion generator 12 Fan 13 Passage 14 Catalytic surface 15 Member 16 Material 17 Part of ultraviolet rays 18 Vertical surface 19 End portion 20 Inside 21 Part of ultraviolet ray 22 Outside slope 23 Concave reflector

Claims (9)

  In-vehicle air cleaning system that consists of intake of contaminated air that is sucked or press-fitted by a fan into the interior of the device body, light source, photocatalytic filter, reflector, activated carbon filter, and clean air outlet apparatus.   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 light source, a large number of materials that transmit and diffusely reflect the light beam, a member that is arranged in a direction that crosses the material with respect to the irradiation direction of the light beam, and a reflector that is formed in the passage. An in-vehicle air purifier. . The catalyst 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.   4. A vehicle-mounted air cleaning device, wherein the material according to claim 3 is a transflective material such as glass, acrylic resin, ABS, or vinyl chloride, and the cross-sectional shape is a polyhedron or a polygon.   4. An in-vehicle air cleaning device comprising a member that is arranged along the upper and lower surfaces in a crossing direction and in a direction parallel to the light beam to form a gap that allows passage of the light beam with respect to the material according to claim 3.   8. A vehicle-mounted air cleaning device, wherein the member according to claim 7 is made of aluminum that is not oxidatively decomposed by a catalyst.   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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