JP2006000366A - Ultraviolet sterilizer and air-conditioner using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an ultraviolet sterilizer capable of reducing the cost and the ventilation resistance by reducing the quantity of use of expensive ultraviolet shading members, and to provide an air cleaner using the same. <P>SOLUTION: A case 9 constituting the ultraviolet sterilizer 8 is divided into three sections in the left/right directions: an ultraviolet lamp storage part 9a, a main sterilization chamber 9c, and a subordinate sterilization chamber 9b. The ultraviolet lamp storage part 9a for storing an ultraviolet lamp 11 in the longitudinal direction is disposed on one side of the three-divided case. The main sterilization chamber 9c with a number of oval through holes 10 bored in the front/rear faces is formed to project in the front/rear directions on the other side. The subordinate sterilization chamber 9b with a passage whose width is narrow and ultraviolet shading members 12a and 12b mounted on the front and rear faces is disposed between the ultraviolet lamp storage part 9a and the main sterilization chamber 9c. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an ultraviolet sterilization apparatus provided with an ultraviolet lamp for sterilization, and an air cleaner as an air conditioner using the same.

  As disclosed in Patent Document 1, for example, an ultraviolet sterilizer incorporated in a conventional air conditioner or the like is provided with a unit case in an air passage in a housing having a suction port and a blower outlet, and at the center thereof. An ultraviolet lamp is provided. A plurality of slits are formed on the front and rear surfaces of the unit case by cut and raised pieces, and the air sucked from the slits flows out in response to the ultraviolet rays irradiated from the ultraviolet lamp. The contained bacteria or germs are irradiated with ultraviolet rays and disappear by their bactericidal action. Further, leakage of ultraviolet rays to the outside is prevented by the cut and raised pieces. However, there is a problem that the ventilation resistance increases with respect to the air that is about to flow into the unit case due to the cut and raised pieces, and the sterilizing effect is lowered because only a part of the air passes through the unit case.

  In order to solve these problems, for example, as shown in a cross-sectional view from above in FIG. 6, a closed rectangular shape in which a large number of inflow holes 31 are formed in the front surface and outflow holes 32 are formed in the rear surface. An ultraviolet sterilizer comprising a case 30, an ultraviolet lamp 33 arranged vertically in the center of the case 30, and ultraviolet shielding members 34 a and 34 b mounted so as to cover the inflow hole 31 and the outflow hole 32. There is also a case example. The ultraviolet light shielding members 34a and 34b are formed in a so-called honeycomb shape by continuously joining cells having a substantially hexagonal cross section made of aluminum foil or the like with open front and back surfaces, and absorb ultraviolet rays inside the cells. An ultraviolet absorbing member is applied. The air sucked from the inflow hole 31 passes through the ultraviolet light shielding member 34a disposed on the front surface, and is disposed on the rear surface after sterilizing germs or bacteria contained by the ultraviolet light irradiated from the ultraviolet lamp 33. The ultraviolet light shielding member 34b is passed through and is discharged from the case 30 through the outflow hole 34b.

  Further, each time the ultraviolet rays irradiated from the ultraviolet lamp 33 and incident on the ultraviolet light shielding members 34a and 34b are repeatedly reflected inside the cell, the ultraviolet rays are gradually absorbed by the ultraviolet absorbing member applied to the inside of the cell. To prevent leaks.

  However, the ultraviolet light shielding members 34a and 34b formed by continuously joining substantially hexagonal cells made of aluminum foil or the like are expensive in production due to expensive raw materials and difficulty in production. The ultraviolet sterilizer to be used and thus the cost of an air cleaner using the ultraviolet sterilizer was increased. In addition, since the ultraviolet light shielding member is formed by a large number of cells, the ventilation resistance to the air passing through the cell is increased, which causes noise.

JP-A-11-63592

  In view of the above problems, the present invention can perform a sufficient sterilization treatment without reducing the sterilization ability without using a large amount of an expensive ultraviolet light shielding member, and an ultraviolet sterilization device with reduced ventilation resistance, An object is to provide an air purifier using the same.

  In order to solve the above problems, the present invention provides an ultraviolet sterilizer comprising a case in which an air circulation hole is drilled and an ultraviolet lamp disposed in the case, and the case is provided with the ultraviolet lamp, A main sterilization chamber having air flow holes formed in the front and rear surfaces is provided, and a sub sterilization chamber having an ultraviolet light shielding member mounted on the front and rear surfaces is provided between the ultraviolet lamp and the main sterilization chamber. . Further, the ultraviolet light shielding member is formed by continuously joining cells each having an ultraviolet absorbing member therein. Further, a photocatalyst or an ozone decomposition catalyst is carried inside the cell. Further, it is composed of an ultraviolet lamp, a main sterilization chamber having a through hole in the front and rear surfaces, and a sub sterilization chamber in which an ultraviolet light shielding member is mounted on the front and rear surfaces between the ultraviolet lamp and the main sterilization chamber. It becomes.

  According to the present invention, the case constituting the ultraviolet sterilizer is divided into three parts in the left-right direction, and a rectangular ultraviolet lamp storage part is provided on one side of the three parts, and the ultraviolet lamps are stored in a vertically long shape. The main sterilization chamber is formed in a rectangular shape so as to protrude in the direction, and a large number of oblong circulation holes are formed on the front and rear surfaces, and a passage width is provided between the ultraviolet lamp storage portion and the main sterilization chamber. Is formed narrow, and by providing a sub-sterilization chamber with ultraviolet light shielding members on the front and rear surfaces thereof, the ultraviolet light emitted from the ultraviolet lamp stored in the ultraviolet lamp storage portion is formed with a narrow passage width. By passing through the sub-sterilization chamber, the light flux is narrowed down into a thin beam, and the air passing through the main sterilization chamber is sterilized, and leakage to the outside is prevented. As a result, the cost of performing sufficient sterilization treatment without using a large amount of ultraviolet light shielding member is reduced, and the ultraviolet sterilization device capable of reducing the ventilation resistance and preventing the occurrence of noise and the like, and the air cleaner using the same And can be.

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

  FIG. 1 is a sectional view of an air purifier provided with an ultraviolet sterilizer according to the present invention, and FIG. 2 is an exploded perspective view thereof. 3A is a longitudinal sectional view in the first embodiment of the ultraviolet sterilizer and FIG. 3B is a front view thereof, and FIG. 4A is a perspective view of the ultraviolet light shielding member and FIG. 4B. Is a cross-sectional view thereof. FIG. 5 is a cross-sectional view of the second embodiment.

  As shown in FIGS. 1 and 2, an air cleaner provided with an ultraviolet sterilizer according to the present invention includes a front panel 1 having a display portion 1b on the front surface and suction ports 1a formed on both left and right sides, and a plurality of upper surfaces. The main body is comprised with the rear panel 2 which formed the blower outlet 2a with the crosspiece. Inside the main body, an inflow hole 3a is formed in the central portion, and the front portion is partitioned by a base 3 having a rectangular mounting portion 3b on which a UV sterilizer 8 to be described later is mounted. Facing the inflow hole 3a, a cylindrical centrifugal fan 5 having a large number of blades arranged on the circumference and a fan motor 4 pivotally supporting the centrifugal fan 5 are provided. A filter 7 integrated with a pre-filter, a dust collecting filter, and a deodorizing filter corresponding to the side suction port 1 is detachably attached to the front section so as to be detachable. The so-called HEPA (HIGH EFFICENCY PARTICLATE AIR) filter is formed so that bacteria of 1 μm or less can also be collected. On the rear side thereof, an ultraviolet sterilizer 8 incorporating an ultraviolet lamp 11 is provided, and above these, a power supply chamber 6 having a power supply device 6a for supplying a voltage to the ultraviolet lamp 11 is provided. The indoor air sucked from the suction port 1a removes dust and odor components by the filter 7, and flows into the ultraviolet sterilizer 8, and passes through this to be sterilized from the ultraviolet lamp 11. Bacteria or miscellaneous bacteria contained therein are sterilized by being irradiated with ultraviolet rays having a specific wavelength.

  As shown in FIG. 2, the base 3 is formed in a thin box shape having an open front surface, and the circular inflow hole 3a is formed in the center of the back wall as described above, and the periphery of the back wall is formed. The front is projected, and the inside thereof is a mounting portion 3b in which the ultraviolet sterilizer 8 is embedded and screwed. As a result, all of the air sucked from the suction port 1a and passed through the filter 7 passes through the ultraviolet sterilizer 8, and shields the air that diffuses and flows around.

  As shown in the longitudinal sectional view of FIG. 3A and the front view of FIG. 3B, the ultraviolet sterilizer 8 is a substantially rectangular case formed of a SECC steel plate (galvanized steel plate) having a low reflectance. 9, an ultraviolet lamp 11 disposed vertically on one side of the case 9, and ultraviolet light shielding members 12 a and 12 b disposed on one side of the front and rear surfaces of the case 9. By forming the case 9 with a SECC steel plate having a low reflectivity, reflection of ultraviolet rays emitted from the ultraviolet lamp 11 is suppressed as much as possible, and the reflected ultraviolet rays are prevented from leaking outside.

  As shown in FIG. 3A, the case 9 is divided into three in the left-right direction, and a rectangular ultraviolet lamp storage portion 9a in which the ultraviolet lamp 11 is stored in a vertically long shape is provided on one side. The electrode 13 of the ultraviolet lamp that leads out the wiring connected to the power supply device 6a is fixed. On the other side of the case 9, there is formed a main sterilization chamber 9c which is formed in a square shape so as to protrude in the front-rear direction and has a number of oblong air circulation holes 10 formed in the front-rear surface. The air flowing into the main sterilization chamber 9c from the front air circulation hole 10 is sterilized with germs or bacteria contained therein by ultraviolet rays irradiated from the ultraviolet lamp 11, and then the rear air circulation hole 10 is sterilized. It is supposed to flow out of. Further, the peripheral edge 10a of the air circulation hole 10 is formed in a so-called burring shape protruding inward as shown in a partially enlarged view so as to prevent the leakage of ultraviolet rays to the outside as much as possible.

  A passage width is formed narrowly between the ultraviolet lamp housing portion 9a and the main sterilization chamber 9c, and a sub sterilization chamber 9b is formed on the front and rear surfaces of which the rectangular ultraviolet light shielding members 12a and 12b are mounted. Yes. As shown in FIG. 2A, the ultraviolet rays irradiated from the ultraviolet lamp 11 housed in the ultraviolet lamp housing portion 9a pass through the sub-sterilization chamber 9b having a narrow passage width, The light beam 11a is narrowed down into a thin beam and irradiated to the air passing through the main sterilization chamber 9c, thereby preventing leakage from the air circulation hole 10 to the outside. Further, the air passing through the ultraviolet light shielding members 12a and 12b is also sterilized by ultraviolet rays.

  As shown in the perspective view of FIG. 3 (A), the ultraviolet light shielding members 12a and 12b provided in the auxiliary sterilization chamber 9b are formed of thin aluminum foil of about 10 to 30 μm, and the front and rear surfaces are opened. In addition, about 500 to 1000 regular hexagonal cylindrical cells are continuously joined per square inch to form a so-called honeycomb shape. The cell has a length of about 10 mm, and a black paint ultraviolet absorbing member made of a fluorine-based resin material that absorbs ultraviolet rays is applied to the inner wall surface of the cell. As the cell is formed in a regular hexagonal cylindrical shape as shown in FIG. 3 (B), ultraviolet rays incident at an oblique angle of about 10 degrees or more from the central axis in the longitudinal direction. Is absorbed by the ultraviolet absorbing member every time reflection is repeated inside, so that it does not leak from the opening at the other end. Thus, the sterilization process is performed while the air passes in the sub-sterilization chamber 9b.

  The ultraviolet lamp 11 irradiates the surrounding with ultraviolet light having a specific wavelength of about 254 nm (nanometer), which has the highest sterilization efficiency, and the air flowing into the ultraviolet sterilization apparatus 8 contains bacteria or Various germs are sterilized by ultraviolet rays having a wavelength of 254 nm, and are discharged as purified fresh air.

  Next, the operation will be described. The indoor air sucked from the side suction port 1a of the front panel 1 first passes through the filter 7, so that dust having a relatively large particle size is removed by the first prefilter constituting the air. Subsequently, fine dust particles are removed by the second-layer dust collecting filter. The air from which the dust has been removed is then adapted to absorb the odor component contained by the third-layer deodorizing filter. The air absorbed by removing dust and odor components flows into the ultraviolet sterilization apparatus 8 and passes through the main sterilization chamber 9c and the sub sterilization chamber 9b, thereby irradiating ultraviolet rays emitted from the ultraviolet lamp 11. The bacterium or bacteria contained therein is sterilized and becomes purified air. The purified air flows into the rear section behind the base 3 through the inflow hole 3a, and is sent out again from the blowout port 2 into the room by the centrifugal fan 5.

  Since the ultraviolet light shielding members 12a and 12b attached to the ultraviolet sterilizer 8 are within the range of the sub-sterilization chamber 9b, the structure and cost of the ultraviolet sterilizer 8 can be simplified without reducing the sterilization capacity. Can be reduced. In addition, when air passes through the elliptical air circulation hole 10 formed in the main sterilization chamber 9c, ventilation resistance is reduced and generation of noise and the like can be prevented. ing.

  Next, a second embodiment will be described. In the second embodiment, as shown in FIG. 5, an ultraviolet lamp storage portion 15 for storing the ultraviolet lamp 11 is provided in the center of the case 14, and the auxiliary sterilization chamber 17 in which the ultraviolet light shielding members 18 are mounted on the left and right sides. And a main sterilization chamber 16 having air flow holes formed in the front and rear surfaces on both sides thereof. Accordingly, the main sterilization chamber 16 is irradiated with the beam-shaped ultraviolet light that has passed through the auxiliary sterilization chamber 17 to perform sterilization treatment.

  In addition, a photocatalyst or an ozone decomposition catalyst may be applied or carried inside the cells of the ultraviolet light shielding members 12a and 12b together with the ultraviolet absorbing member. The photocatalyst and the ozone decomposing catalyst have a function of releasing an odor decomposing component when receiving ultraviolet rays, thereby enabling sterilization treatment and deodorizing treatment to be performed in parallel.

It is sectional drawing which shows the air cleaner by this invention. It is a disassembled perspective view which shows the air cleaner by this invention. (A) is a longitudinal cross-sectional view in the first embodiment of the ultraviolet sterilizer according to the present invention. (B) is a front view in the first embodiment of the ultraviolet sterilizer according to the present invention. (A) is a perspective view of an ultraviolet light shielding member. (B) is the front view. It is a longitudinal cross-sectional view which shows the 2nd Example of an ultraviolet sterilizer. It is a longitudinal cross-sectional view which shows the conventional ultraviolet sterilizer.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Front panel 1a Intake port 1b Display part 2 Rear panel 2a Outlet 3 Base 3a Inflow hole 3b Mounting part 4 Fan motor 5 Centrifugal fan 6 Power supply room 6a Power supply device 7 Filter 8 Ultraviolet sterilizer 9 Case 9a Ultraviolet lamp storage part 9b Deputy Sterilization chamber 9c Main sterilization chamber 10 Air flow hole 11 Ultraviolet lamp 11a Light flux 12a, 12b Ultraviolet light shielding member 13 Electrode 14 Case 15 Ultraviolet lamp storage 16 Main sterilization chamber 17 Sub sterilization chamber 18 Ultraviolet light shielding member

Claims (4)

In an ultraviolet sterilizer comprising a case with an air circulation hole and an ultraviolet lamp disposed in the case,
The case is provided with the ultraviolet lamp and a main sterilization chamber having air circulation holes formed in the front and rear surfaces, and an ultraviolet light shielding member is mounted on the front and rear surfaces between the ultraviolet lamp and the main sterilization chamber. An ultraviolet sterilizer characterized by providing an auxiliary sterilization chamber.   2. The ultraviolet sterilizer according to claim 1, wherein the ultraviolet light shielding member is formed by continuously joining cells each having an ultraviolet absorbing member therein.   The ultraviolet sterilizer according to claim 2, wherein a photocatalyst or an ozone decomposition catalyst is carried inside the cell.   An ultraviolet sterilizer comprising an ultraviolet lamp, a main sterilization chamber having a through hole formed in the front and rear surfaces, and a sub sterilization chamber having an ultraviolet light shielding member mounted on the front and rear surfaces between the ultraviolet lamp and the main sterilization chamber. An air conditioner comprising:

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