JP2006007806A - Air cleaner for automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To purify contaminated air from a blowout port of an air conditioner for automobile by minimizing the using number of relatively expensive light sources for generating ultraviolet ray, and irradiating the catalyst of a photocatalytic filter with the ultraviolet ray while passing the ultraviolet ray from a light source as parallel lights. <P>SOLUTION: A cover part 1 opposed to the blowout port 2 of the air conditioner for automobile is taken as an intake port of contaminated air. A pre-filter 5, the light source 6 of ultraviolet ray or the like, a photocatalytic filter 8 provided with a catalyst surface 7, an activated charcoal filter 9, a fan, if needed, and a discharge port 10 of clean air are formed within a passage of a cleaner body 3. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  Applying ultraviolet rays (light) to titanium dioxide, etc., may cause oxidative decomposition of organic substances in the air or water by photocatalytic reaction. Cleaning), antibacterial, sterilizing, deodorizing and the like.

  The configuration shown in FIG. 11 is a conventional method in which a surface (contact surface) a coated or coated with titanium dioxide is directly irradiated with sunlight or directly with a light source b 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 a.

  The configuration shown in FIG. 12 is a method of directly irradiating a light source b that generates ultraviolet rays or the like with a fluorescent lamp or the like inside a cylindrical shape with a surface a coated or coated with titanium dioxide or the like inside in a conventional example. The substance is moved and contacted in parallel along the surface a.

FIG. 13 shows a conventional example in which a plurality of surfaces “a” coated or coated with titanium dioxide or the like are arranged on both sides, and a light source “b” that generates ultraviolet rays or the like is installed between them. 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 products made using these materials are 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.

  Since light sources that generate ultraviolet rays are expensive, the number of used light sources is reduced, and the ultraviolet rays from the light sources are converted into parallel light by an internal mechanism and transmitted to a longer distance, and reflected to efficiently irradiate the catalyst surface with ultraviolet rays. We are going to propose an air cleaner for automobiles.

  According to the present invention, the number of light sources that generate relatively expensive ultraviolet rays is reduced, and the ultraviolet rays from the light sources are converted into parallel light so as to pass through to a longer distance, and the ultraviolet optical axis is reflected to efficiently. It is possible to irradiate the catalyst surface with ultraviolet rays.

  FIG. 1 is a side sectional view of an embodiment of an automotive air cleaner according to the present invention, and FIG. 2 is a transverse sectional view thereof. In these drawings, reference numeral 1 denotes a cover portion facing an air outlet 2 of an automobile air conditioner. A pre-filter 5, ultraviolet rays and the like are disposed in a passage 4 of a purifier body 3 integrally formed with the cover portion 1. The light source 6, the photocatalytic filter 8 having the catalyst surface 7 formed thereon, the activated carbon filter 9, and the clean air outlet 10 are mainly formed. That is, in these configurations, the contaminated air blown out from the air conditioner of the automobile is pushed into the passage 4 to cross the luminous flux 17 from the light source 6 with respect to the flowing direction of the contaminated air. Together, it purifies the air.

  On the other hand, according to the other embodiments shown in FIGS. 3 and 4, the overall configuration is substantially the same as that in the above-described one embodiment, but the fan 11 is provided in the vicinity of the discharge port 10. Is different. The fan 11 is disposed after the activated carbon filter 9 in FIGS. 3 and 4, but may be disposed in front of the activated carbon filter 9 in some cases. In these various implementations, in addition to pushing the contaminated air blown out from the air conditioner into the passage 4, the blowing power is increased by using the suction force by the fan 11.

  FIG. 5 is a schematic diagram of an electronic circuit of an automobile air cleaner. In this figure, the electronic control unit performs “inverter base control for ultraviolet light source”, “fan (may not be present)”, “low voltage cutoff control (11.5 V)”, and “low voltage cutoff control (10.5 V)”. is there.

  FIG. 6 shows examples of three types (a), (b), and (c) of the corrugated plate-like member 12 constituting the photocatalytic filter 8. These members 12 are made of a material that does not transmit light, such as a metal such as iron or aluminum, or a synthetic resin, and the catalyst surface 7 is formed on the front and back surfaces by applying or coating titanium dioxide. The catalyst surface 7 is formed on both surfaces of the member 12 as shown in an enlarged view in FIG. 7, but the catalyst surface 7 formed on both surfaces of the member 12 in each drawing is represented only by a reference numeral. . The uneven surface 13 of these members 12 forms a resistance portion 14 against the parallel light 17 from the light source 6 and the air flowing in the direction crossing the parallel light 17.

  With respect to the formation of the resistance portion 14, the slit 14 in the longitudinal direction is formed as shown in FIG. 8 or a large number of pores 16 are formed as shown in FIG. On the other hand, resistance is provided and the residence time of the contaminated air is increased to generate a turbulent flow so that the contact of the contaminated air with the catalyst surface 7 can be further increased.

  FIG. 10 shows a situation in which contaminated air is purified between the light source 6 and the member 12, and the parallel light 17 of the light flux from the light source 6 passes through the upper and lower intermediate portions of the uneven surface 13 of the member 12. As a result, contaminated air (arrow direction) circulates in a direction crossing the parallel light 17, and contact with the catalyst surface 7 is increased by interference between the parallel light 17 and the contaminated air, thereby further promoting purification. It can be done.

It is side sectional drawing of one embodiment of the air cleaner for motor vehicles of this invention. It is a cross-sectional view of FIG. It is side sectional drawing of the other embodiment of the automatic air cleaner of this invention. It is a cross-sectional view of FIG. It is an electronic circuit schematic diagram of the air cleaner for motor vehicles. It is a figure which shows the example of 3 types (a) (b) (c) of the corrugated plate-like member which comprises a photocatalyst filter. FIG. 7 is a sectional view taken along and enlarged from VII-VII in FIG. 6. It is the perspective view which formed the slit of the longitudinal direction in the member. It is the perspective view which provided many pores in the member. It is explanatory drawing which shows the relationship between a light source and a photocatalyst filter. 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

DESCRIPTION OF SYMBOLS 1 Cover part 2 Air outlet 3 Cleaner body 4 Passage 5 Pre filter 6 Light source 7 Catalytic surface 8 Photocatalytic filter 9 Activated carbon filter 10 Exhaust port 11 Fan 12 Member 13 Concavity and convexity 14 Resistance part 15 Slit 16 Pore 17 Parallel light

Claims (8)

Ultraviolet rays having a pre-filter and a light beam intersecting with the flow direction of the contaminated air in the passage in the passage of the purifier main body, with the cover portion facing the air outlet of the automobile air conditioner as the intake of the contaminated air An air cleaner for automobiles characterized by forming a light source such as a photocatalytic filter having a catalytic surface, an activated carbon filter, and a clean air outlet. Ultraviolet rays having a pre-filter and a light beam intersecting with the flow direction of the contaminated air in the passage in the passage of the purifier main body, with the cover portion facing the air outlet of the automobile air conditioner as the intake of the contaminated air An automotive air cleaner comprising a light source such as a photocatalyst filter having a catalytic surface, an activated carbon filter, and an air old reference fan added either before or after the activated carbon filter. The automobile air cleaner according to claim 1 or 2, wherein the light source is formed by a fluorescent lamp, a black light, a photochemical lamp, a cold cathode lamp, or an LED. The catalyst surface is composed of a plurality of corrugated plate-like members in which a photocatalytic filter is disposed so as to be spaced apart from each other, and the contaminated air pushed into the purifier main body against the uneven surface of these members is the member. 2. The purification of contaminated air on the catalyst surface is promoted by the interference of contaminated air flowing in a direction crossing the light flux from the light source by passing through the uneven surface of the light source. Or the air cleaner for motor vehicles of 2. By forming a resistance portion against the flow of contaminated air on the corrugated surface of the corrugated plate member, the residence time of the contaminated air is increased to generate turbulence, and the contact of the contaminated air to the catalyst surface is further increased. The automotive air cleaner according to claim 4, wherein the air cleaner is used. The automobile air cleaner according to claim 4 or 5, wherein the member is made of a material that does not transmit light and reflects light such as a metal such as iron or aluminum or a synthetic resin. The automobile air cleaner according to claim 5, wherein the resistance portion is a slit in the longitudinal direction or a large number of pores formed on the uneven surface. The automobile air cleaner according to any one of claims 1, 2, 3, 4, and 5, wherein the catalyst surface is formed by application or coating of titanium dioxide.

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