JP2006198142A - Deodorization device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a deodorization device efficiently deodorizing by responding to various types of odor components, combinedly executing sterilization, being used safely for environment and improving the maintenance. <P>SOLUTION: A casing 1 is provided with an inlet 2 in its front face lower part and an outlet 3 in its upper face respectively, disposed with a plurality of ultraviolet lamps 7, 8 and 9 and a plurality of photocatalyst filters 11, 12 and 13 with their paired with one another, and is provided with ozonolysis catalysts 6a and 6b facing the inlet 2 and the outlet 3. The two-wavelength ultraviolet rays illuminated from the ultraviolet lamps 7, 8 and 9 execute deodorization by decomposing the malodor components. An ultraviolet lamp lit according to the odor in a room is selected to elongate the replacement period of the ultraviolet lamps and appropriately respond to the odor intensity in the room. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a deodorizing apparatus, and more particularly, to a configuration for facilitating adjustment of the ultraviolet intensity of an ultraviolet lamp that generates ozone and the adsorptive power of a photocatalytic filter and extending the life of these.

  For example, as shown in FIG. 2, the conventional deodorizing apparatus has a cylindrical intake pipe 31 mounted on one side of a case 30 formed in a square shape and an exhaust port 32 opened on the other side. In the air flow path connecting the intake pipe 31 and the exhaust port 32, a water removal air filter 33, a first photocatalytic filter 34, a first ultraviolet lamp unit 35, a second photocatalytic filter 36, and a second ultraviolet ray are provided. A lamp unit 37 and a third photocatalytic filter 38 are sequentially disposed, and an adsorbent unit 39 filled with adhering coal and an exhaust fan 40 are disposed behind them.

  The intake pipe 31 is connected to an intake hose connected to a group of contaminated air, and the contaminated air sucked through the intake hose is first removed from the moisture, chips and dust contained by the dewatering air filter 33. Subsequently, organic compounds such as acetaldehyde and nitrogen compounds such as ammonia, which are odor components contained by the photocatalytic filters 34, 36 and 38, are absorbed and decomposed, followed by ozone generated by ultraviolet rays from the ultraviolet lamp units 35 and 37. Odor components such as hydrogen sulfide are decomposed and sterilized.

  Furthermore, after the malodorous component remaining by passing through the adsorbent unit 39 is removed, the air is purified from the exhaust port 32 by the exhaust fan 40 and sent into the room. .

  However, the ultraviolet lamp units 35 and 37 have a limited service life, and the water removal air filter 33 and the adsorbent unit 39 need to be replaced after being used for a certain period of time. The burden of these exchange work was applied, and improvement was demanded. Further, the ultraviolet lamp units 35 and 37 have been required to cope with the problem that the adjustment of the ultraviolet intensity is not easy.

International Publication Number WO2002 / 053196 (7 pages, FIG. 1)

  In view of the above problems, the present invention can efficiently deodorize various odor components such as formaldehyde and acetaldehyde, and can also perform sterilization treatment of germs contained in the air. As a result, it is possible to extend the replacement period of the ultraviolet lamp, which is an ozone generator, to improve the maintainability and to easily adjust the deodorization intensity. An object of the present invention is to provide a deodorizing apparatus that can cope with main odors.

  In order to solve the above problems, the present invention is provided with a plurality of ultraviolet lamps for generating ozone, at least one photocatalyst filter carrying a photocatalyst, and a blower fan in a housing having an inlet and an outlet. The ultraviolet lamp is selectively turned on according to the odor intensity in the room, or is turned on intermittently according to the energy saving mode.

  According to the present invention, a suction port is provided in the lower part of the front surface of the rectangular thin housing, and an air outlet is provided in the upper surface, and a plurality of ultraviolet lamps and a plurality of photocatalysts are arranged in pairs in the housing. In addition, an ozone decomposition catalyst is provided facing the inlet and the outlet, and an odor contained in the air by generating ozone by two-wavelength ultraviolet rays emitted from the ultraviolet lamp by providing a blower fan. While deodorizing by decomposing the components, sterilization of various bacteria or bacteria is performed, and the efficiency of cleaning can be improved by repeatedly performing these. In addition, by performing deodorization with a photocatalyst as well, it is possible to perform deodorization of various odor components that cannot be removed by ozone alone without omission, thereby providing a deodorization device that can enhance the deodorization effect. In addition, by alternately lighting a plurality of ultraviolet lamps intermittently, it is possible to extend the useful life of the lamps to facilitate maintenance, and by changing the number of the ultraviolet lamps to be lit, indoor odors can be obtained. The deodorizing ability can be changed accurately according to the strength.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail as examples based on the attached drawings.

  1A is a front sectional view of a deodorizing apparatus according to the present invention, and FIG. 1B is a side sectional view thereof.

  As shown in FIG. 1, the deodorizing apparatus according to the present invention is provided with a suction port 2 in which a plurality of suction louvers 2a are arranged in the vertical direction at the lower part of the front surface of a rectangular thin housing 1 having a base 1a. The air outlet 3 is provided with a plurality of air outlet louvers 3a arranged in the front-rear direction. A pre-filter 5 that removes dust having a relatively large particle diameter from indoor air sucked from the suction port 2 is provided on the back surface of the suction port 2. An ozonolysis catalyst 6a is provided.

  A flat ozone-decomposing catalyst 6b is also provided on the back surface of the air outlet so that the indoor air is sucked from the air inlet 2 below and is deodorized, sterilized and cleaned. A blower fan 14 is provided for sending the air that has been discharged into the room again from the air outlet 3. The blower fan 14 is composed of a cross flow fan in which a large number of blades are inclined at a certain angle and arranged on the circumference, and a drive motor 14a for rotating the cross flow fan is provided on the housing 1 on one side thereof. It is supported and provided. In addition, as shown in FIG. 1B, a pair of stabilizers 1b formed so as to target the concave curved surface are attached to the front and rear inner wall surfaces of the housing 1 so as to protrude inwardly. The blower fan 14 stably sucks air from the suction port 2 and can be sent out from the blower port 3 by the action of the stabilizer 1b.

  Between the ozone decomposition catalyst 6a and the blower fan 14, the ultraviolet lamp 7, the ultraviolet lamp 8, the ultraviolet lamp 9, and the photocatalyst 11, the photocatalyst 12, and the photocatalyst 13 formed in a honeycomb shape are paired with each other. Is provided.

  The ultraviolet lamp 7 includes a base 7a connected to an AC power source and a transformer (not shown), and a lamp 7b supported by the base 7a and formed in a U-shape. An appropriate amount of mercury is enclosed, and electrodes are formed on the lamp bases. When a high voltage is applied to the electrode from the AC power source via the base 7a, electrons are emitted from the electrode, which collides with argon gas molecules and generates cations. The cation further emits secondary electrons from the electrode, which excites mercury molecules and emits ultraviolet light to the surroundings.

  The ultraviolet lamps 7, 8, and 9 emit ultraviolet rays having two wavelengths of 185 nm (nanometers) and 254 nm, and the ultraviolet rays of 185 nm have an action of decomposing odor components by themselves, and air It breaks down the oxygen inside and generates radical oxygen. Radical oxygen is further combined with oxygen in the air flowing around it to generate ozone. In addition, ultraviolet rays having a wavelength of 254 nm have a bactericidal action and sterilize germs or bacteria contained in the air flowing around.

  Ozone generated by radical oxygen is, for example, tobacco odor, various odor components generated from cooked goods or pets contained in the air sucked from the suction port 2, or basic odors such as methyl mercaptan, methyl sulfide, and ammonia. It has an action of decomposing components and has an effect of suppressing the generation of mold and the like, and is configured to clean air and send it out from the outlet 3 into the room. Moreover, after deodorizing as a property of ozone, it is easily reduced to oxygen.

  The photocatalytic filters 11, 12, and 13 provided above the ultraviolet lamps 7, 8, and 9, respectively, are formed by combining plate materials carrying a photocatalyst such as titanium oxide or titanium apatite on the surface in a lattice pattern. . Photocatalysts such as titanium oxide or titanium apatite are excited when irradiated with ultraviolet rays from the ultraviolet lamps 7, 8, and 9 to generate hydrogen peroxide or hydroxyl radicals. These have strong oxidizing power, decompose odorous components such as ammonia into odorless components such as carbon dioxide, and formaldehyde and acetaldehyde that are generated from housing building materials, or nitrogen oxides generated from exhaust gas, etc. Is to be disassembled.

  Next, the operation will be described. The indoor air sucked from the suction port 2 is removed by the pre-filter 5 provided on the back surface of the suction port 2 to remove dust having a relatively large particle diameter, and then passes through the ozone decomposition catalyst 6a. To do. The air that has passed through the ozonolysis catalyst 6a rises, and then is deodorized by the ultraviolet light with a wavelength of 185 nm irradiated from the ultraviolet lamp 7 and generates radical oxygen. The generated radical oxygen is oxygen in the air flowing around it. Reacts with ozone to generate ozone. The generated ozone decomposes ammonia odor, tobacco odor, etc. contained in the air or basic odor components such as methyl mercaptan, methyl sulfide, ammonia and the like into odorless components, while sterilizing bacteria or bacteria. Further, ultraviolet rays having a wavelength of 254 nm having a sterilizing action are also emitted from the ultraviolet lamp 7, so that the sterilization treatment is performed in parallel.

  When the photocatalyst filter 11 is irradiated with ultraviolet rays from the ultraviolet lamp 7, a photocatalyst such as titanium oxide or titanium apatite is excited to generate hydrogen peroxide or a hydroxyl radical to generate formaldehyde, acetaldehyde, or exhaust gas. The remaining odorous components such as nitrogen oxides are decomposed into odorless components. By continuing the operation as described above in the ultraviolet lamps 8 and 9 and the photocatalytic filters 12 and 13, air deodorization and sterilization are continuously performed. The air purified by the above is sent out from the outlet 3 into the room again by the blower fan 14. The generated ozone is reduced to oxygen by an ozone decomposition catalyst 6b provided on the back surface of the blowout port 3, and is discharged as a harmless component from the blowout port 6b. In addition, when the operation is stopped, ozone that is about to leak into the room through the suction port 2 is converted into a harmless component by the ozone decomposition catalyst 6a.

  The ultraviolet lamps 7, 8, and 9 have a useful life time and need to be replaced when used for a long time. In order to extend the service life of the ultraviolet lamp, for example, during normal operation, the ultraviolet lamp 7 and the ultraviolet lamp 8 may be turned on and the ultraviolet lamp 9 may be stopped. Alternatively, the ultraviolet lamps 8 and 9 may be turned on and the ultraviolet lamp 7 may be stopped. As a result, it is possible to extend the replacement period of the ultraviolet lamp to make the device easy to maintain. Alternatively, the deodorizing operation can be performed for a certain period with only one ultraviolet lamp, and then the operation can be sequentially switched to another ultraviolet lamp, thereby reducing the burden on the ultraviolet lamp and extending the replacement period. it can.

  In addition, when the indoor odor intensity is high, it is possible to perform a strong deodorizing operation in combination with the photocatalytic filters 11, 12, 13 by turning on the ultraviolet lamps 7, 8, 9 all at once. Further, when the indoor odor is relatively low, an energy saving operation can be performed according to the indoor odor by turning on any one ultraviolet lamp alone or by turning on two ultraviolet lamps.

(A) is front sectional drawing of the deodorizing apparatus by this invention. (B) is side sectional drawing of the deodorizing apparatus by this invention. It is sectional drawing which shows an example of the ozone generator by a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Case 1a Base 1b Stabilizer 2 Suction port 2a Louver 3 Outlet 3a Louver 5 Prefilter 6a, 6b Ozone decomposition catalyst 7 Ultraviolet lamp 7a Base 7b Lamp 8, 9 Ultraviolet lamp 11, 12, 13 Photocatalyst 14 Fan fan 14a drive motor

Claims (1)

  A plurality of ultraviolet lamps for generating ozone, at least one photocatalytic filter carrying a photocatalyst, and a blower fan are provided in a housing having an inlet and an outlet, and the ultraviolet lamp is adapted to the indoor odor intensity. The deodorizing apparatus is characterized in that it is selectively lit or intermittently lit according to the energy saving mode.

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