JP2005006771A - Ultraviolet sterilizer and air purifier using it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air purifier provided with an ultraviolet sterilizer capable of preventing the leakage of ultraviolet rays to the outside while improving sterilization efficiency. <P>SOLUTION: The ultraviolet sterilizer 8 comprises: a case body where a left side flow-in port 12a and a right side flow-in port 12b sectioned by a bridge are formed on a front surface and a left side flow-out port 15a and a right side flow-out port 15b are formed on a rear surface; an ultraviolet lamp 19 disposed on the back surface side of the bridge at a prescribed distance from the peripheral edge of the left side flow-in port 12a and the right side flow-in port 12b; and ultraviolet light shielding members 17 and 18 composed of hexagonal cylindrical cells with opened front and rear surfaces composed of thin aluminum foil of about 10 to 30 μm and mounted on the back surface of the flow-in port and the front surface of the flow-out port. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an ultraviolet sterilizer provided with an ultraviolet lamp, and an air conditioner such as an air purifier and an air conditioner.
[0002]
[Prior art]
As shown in FIG. 8, for example, an ultraviolet sterilizer used in a conventional air purifier and an air conditioner has a metallic structure in which one side is opened in an air passage in a housing 70 having a suction port and an outlet. A unit case 62 comprising a box body 62a and an upper lid 62b covering one opened side is provided, and an ultraviolet lamp 61 is disposed at the center thereof. A plurality of cut-and-raised pieces 62e bent inward are formed on the front surface of the unit case 62, and a plurality of slits 62f into which air flows are formed at portions notched by the cut-and-raised pieces 62e. It is like that. Similarly, a plurality of cut-and-raised pieces 62e bent inward are formed on the rear surface, and a plurality of slits 62f through which air flows out are formed at portions cut by the cut-and-raised pieces 62e. (See Patent Document 1)
[0003]
The air sucked from the front side slit 62f of the unit case 62 receives the ultraviolet rays irradiated from the ultraviolet lamp while changing the course by the cut and raised pieces 62e, as indicated by arrows, and receives the rear side slits 62f. The bacteria or bacteria contained in the air are irradiated with ultraviolet rays, and are killed or disappeared by the bactericidal action. The ultraviolet rays radiating from the ultraviolet lamp 61 are shielded by the cut and raised pieces 62e to prevent leakage to the outside of the unit case 62. The resin material is deteriorated by the leakage of the ultraviolet rays or has an influence on the human body. Etc. are to be prevented.
[0004]
However, due to the presence of the shield 62e, the aperture ratio becomes low, and the ventilation resistance increases with respect to the air that is about to flow into the unit case 62. As shown by the arrows, a large amount of air flows outside the unit case 62. The phenomenon that becomes. Accordingly, since only a part of the air flows into the unit case 62, it takes a considerable time to improve the sterilizing effect. Further, the shield 62 may cause noise, and there is a concern that turbulence and stagnation occur in the unit case 62 so that germs and the like adhere to the inner wall.
[0005]
[Patent Document 1]
JP-A-11-63592
[Problems to be solved by the invention]
In view of the above-mentioned problems, the present invention can prevent leakage of ultraviolet rays to the outside, but does not cause ventilation resistance to the air flowing from the suction port of an air cleaner or the like, and ultraviolet rays are absorbed into all of the sucked air. It aims at providing the ultraviolet sterilizer which can perform irradiation, and an air cleaner provided with the same.
[0007]
[Means for Solving the Problems]
In order to solve the above-described problems, the present invention continuously includes a housing having an inlet formed on the front surface and an outlet formed on the rear surface, an ultraviolet lamp disposed in the housing, and a polygonal cylindrical cell. An ultraviolet sterilizer is formed from the ultraviolet light shielding members formed and respectively attached to the inlet and the outlet.
[0008]
In addition, the cell is configured to be formed in a hexagonal cylindrical honeycomb shape with open front and rear surfaces.
[0009]
Further, in the main body provided with the suction port and the air outlet, a filter, a first ultraviolet light shielding member in which polygonal cylindrical cells are successively formed from the suction port side, an ultraviolet lamp, and a polygonal cylindrical shape The second ultraviolet light shielding member in which the cells are continuously formed and a blower fan are provided.
[0010]
In addition, an air purifier comprising a filter, an ultraviolet sterilizer, and a blower fan in order from the inlet side in a body provided with an inlet and an outlet, the ultraviolet sterilizer on the front A casing having an outlet formed on the rear surface, an ultraviolet lamp disposed in the casing, and a polygonal cylindrical cell are continuously formed, and attached to the inlet and the outlet, respectively. The ultraviolet light shielding member is used.
[0011]
In addition, the ultraviolet sterilizer is arranged so that all the air sucked from the suction port and passed through the filter flows into the ultraviolet sterilizer.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
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 showing an air cleaner provided with an ultraviolet sterilizer according to the present invention, and FIG. 2 is an exploded perspective view thereof. 3 is a front view of the ultraviolet sterilizer according to the first embodiment and a sectional view from above, and FIG. 4 is an exploded perspective view thereof. FIG. 5 is a perspective view of a main part of the ultraviolet sterilizer, and FIG. 6 is a cross-sectional view showing a state of shielding ultraviolet rays. FIG. 7 is a front view and a sectional view showing 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.
[0013]
The inside of the main body has an inflow hole 3a at the center, and is divided into front and rear by a base 3 having a rectangular mounting portion 3b around which the ultraviolet sterilizer 8 is mounted. Facing 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 is sequentially detachably mounted on the front section so as to face the suction port 1 side. And a power supply chamber 6 provided with a power supply device 6a for supplying a voltage to the ultraviolet lamp 19 is provided above them. 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 have a sterilizing action from the ultraviolet lamp 19. The bacteria or miscellaneous bacteria contained therein are killed by irradiation with ultraviolet rays of a specific wavelength.
[0014]
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 part protrudes, and the inside thereof is a mounting part 3b into which an ultraviolet sterilizer 8 formed in a square shape to be described later 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.
[0015]
As shown in FIGS. 3 and 4, the ultraviolet sterilizer 8 includes a rectangular front case 9 having an open rear surface made of a SECC steel plate (galvanized steel plate) having a low reflectance, and the front case 9 is opened. A rear case 10 made of SECC steel plate covering the rear surface, a front holder 21 screwed to the back side of the front case 9, and a rear holder 11 screwed to the back side of the rear case 10. The ultraviolet lamp 19 is arranged vertically in the center of the main body. By constructing the housing of the ultraviolet sterilizer 8 with a SECC steel plate having a low reflectance, reflection of ultraviolet rays inside is suppressed as much as possible, and the reflected ultraviolet rays are prevented from leaking to the outside.
[0016]
As shown in FIG. 3, the front case 9 is provided with flanges 9a and 9b as mounting brackets on the periphery thereof, and has a substantially central portion that bulges to the front side, and a left and right side that forms a pair of left and right bulge portions 9c An inflow port 12a and a right inflow port 12b are provided, and a vertical beam formed between them is a front surface that prevents the ultraviolet rays that are radiated from the ultraviolet lamp 19 from radiating from leaking directly from the front side to the outside. It is the side shielding part 13. As shown in FIG. 3, a wire net-like protective body 16 for preventing fingers from entering from the left inlet 12a and the right inlet 12b is attached to the back surface of the bulging portion 9c. The front-side light-shielding member 17 is deformed with fingers, and a situation in which the deformed front-side light-shielding member 17 leaks ultraviolet rays is prevented. A rectangular front-side light-shielding member 17 formed in a honeycomb shape is provided on the back side in contact with the protector 16, and the front-side light-shielding member 17 includes the left inlet 12a and the right inlet 12b. And a front holder 21 that is screwed to the front case 9 by a screw 20 so as to be attached to the protective body 16.
[0017]
The rear case 10 has an opening corresponding to the front case 9, and is made of an elastic body such as rubber provided above and below the ultraviolet lamp 19 in a notch provided in the upper and lower flanges. A connection terminal is fitted. The rear holder 11 is formed in the same shape as the front holder 21 and has a left outlet 15a and a right outlet 15b corresponding to the left inlet 12a and the right inlet 12b, and between them. The formed vertical bar serves as a rear surface side shielding portion 14 that prevents ultraviolet rays that are radiated from the ultraviolet lamp 19 and travel straight forward from leaking directly from the rear surface side to the outside. The rear holder 11 is screwed to the rear case 10 by means of screws 20, and a rectangular rear surface side light shielding member 18 formed in a honeycomb shape is mounted between them. . Further, the rear side light shielding member 18 and the inflow hole 3a are formed to have the same size as a cylindrical bell mouth formed on the rear side of the base 3, and the maximum amount of suppression of increase in ventilation resistance is achieved. It is a size. The same applies to the front-side light shielding member 17.
[0018]
The rear case 10 is provided with a vertical beam facing the ultraviolet lamp 19 to reinforce the strength of the rear case 10. Further, the vertical rail is provided with a plurality of ribs bent on the front surface, and even if any external force acts on the front case 9, the front side light shielding member 17 is prevented from being deformed and the ultraviolet rays are prevented. The lamp 19 is prevented from being damaged. Further, the vertical bar is formed to be narrower than the rear side shielding portion 14 provided in the rear holder 11 so as to suppress the reflection of ultraviolet rays in the rear case 10 as much as possible.
[0019]
As shown in the perspective view of FIG. 5 (A), the front-side light-shielding member 17 and the rear-side light-shielding member 18 are made of a thin aluminum foil having a thickness of about 10 to 30 μm and have a regular hexagonal cylindrical shape with open front and rear surfaces. These cells 17a and 18a are formed by continuously joining about 500 to 1000 cells per square inch, and are formed in a so-called honeycomb shape. The cells 17a and 18a have a depth dimension, so-called thickness dimension, of about 2 to 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 thereof. In addition, since the cells 17a and 18a are formed in a regular hexagonal cylinder having a small diameter, they are incident on one end of the opened front and rear surfaces at an oblique angle of about 10 degrees or more from the central axis in the longitudinal direction. The ultraviolet light that has been absorbed is absorbed by the ultraviolet absorbing member each time it is repeatedly reflected inside, so that it does not leak from the opening at the other end. The ultraviolet absorbing member may be coated with an electrolyte using a black metal oxide or a metal salt instead of the black paint of the fluorine resin material.
[0020]
The front-side light-shielding member 17 and the rear-side light-shielding member 18 are formed in a so-called honeycomb shape in which the front and rear surfaces are open, so that the airflow resistance is equal to the thickness of the thin aluminum foil that forms between the cells. However, the aperture ratio becomes very high and hardly causes resistance to the passing air. Thereby, the air that has passed through the filter 7 smoothly flows into and out of the ultraviolet sterilizer 8.
[0021]
As an example of another ultraviolet light shielding member, as shown in FIG. 5B, the cell 22a is formed in a long and long hexagonal shape as compared with the cells 17a and 18a, and the formation density of the cell 22a is square. The light shielding members 22 may be 50 to 100 per inch. By forming the cell 22a in a vertically long shape parallel to the direction of the ultraviolet lamp, it effectively shields the ultraviolet rays in the side direction that occupies most of the irradiated ultraviolet rays, while reducing the ventilation resistance as much as possible due to the low formation density. It can be done.
[0022]
As another example of the ultraviolet light shielding member, a ceramic material may be fired to form a honeycomb material, the cell formation density may be 500 to 1000 per square inch, and the thickness in the front-rear direction may be about 2 to 10 mm. Further, the shape of the cell is not limited to a hexagon, and a triangular, quadrangular, or corrugated shape can be used instead.
[0023]
The ultraviolet lamp 19 irradiates surroundings with ultraviolet light having a specific wavelength of about 254 nm (nanometer), which has the highest sterilization efficiency, and flows into the ultraviolet sterilizer 8 through the front-side light shielding member 17. The air or bacteria contained therein are cleaned or eliminated by the ultraviolet rays irradiated from the ultraviolet lamp 19 to become purified air and flow out to the outside through the rear side light shielding member 18. It is supposed to be.
[0024]
Next, the operation will be described. The room air sucked from the suction port 1a formed on both side surfaces of the front panel 1 first passes through the filter 7 and then has a relatively large particle size due to the first prefilter constituting the air. Dust is removed, and fine dust having a small particle diameter is also removed by a second-layer dust collecting filter. The air from which the dust has been removed is adapted to absorb the odor component contained by the third-layer deodorizing filter. As shown by the arrows in FIG. 3A, the absorbed air from which dust and odor components have been removed flows from the left inlet 12a and the right inlet 12b of the ultraviolet sterilizer 8 and forms a honeycomb. Then, the light passes through the front-side light shielding member 17 and flows into the ultraviolet sterilizer 8. As described above, the air that has flowed in is exposed to ultraviolet rays of a specific wavelength emitted from the ultraviolet lamp 19, and the contained bacteria or germs are killed to become purified air. Next, the purified air passes through the rear-side light-shielding member 18 formed in a honeycomb shape, flows into the rear section behind the base 3 through the inlet hole 3a, and is blown out by the centrifugal fan 5 to the outlet. 2 is sent to the room again.
[0025]
As shown in FIG. 6, the ultraviolet rays emitted from the ultraviolet lamp 19 are shielded by the front-side shielding part 13 and the rear-side shielding part 14 and reflected back to the outside by the components in the front-rear direction. The oblique component ultraviolet rays that are prevented from leaking and are applied to the front-side light-shielding member 17 and the rear-side light-shielding member 18 are reflected by these or applied to the inner wall surface as indicated by arrows. It is absorbed by the absorbing member and is prevented from leaking outside through these. As a result, leakage of ultraviolet rays to the outside can be prevented even when the ultraviolet intensity is increased, and an ultraviolet sterilizer with improved safety and an air cleaner equipped with the ultraviolet sterilizer can be provided. .
[0026]
Next, a second embodiment will be described. In the second embodiment, as shown in FIG. 7, an ultraviolet lamp 26 is installed vertically in the center of a rectangular housing made of sheet metal, and a plurality of slits are formed by cutting and raising on the left side of the front surface of the housing. A left inlet 27a is provided, and a right inlet 27b is also provided on the right side. In addition, a pair of left and right openings are provided on the front surface of the housing so as to sandwich the built-in ultraviolet lamp 26, and a honeycomb-shaped front-side light-shielding member composed of cells whose front and rear surfaces are opened in the opening. 28a and 28b are mounted, and honeycomb-shaped rear surface side light-shielding members 29a and 29b are also mounted on the rear surface of the housing so as to face each other. The ultraviolet lamp 26 is disposed at a predetermined distance in the left-right direction from the periphery of the pair of left and right openings, and is contained in the air while preventing leakage of ultraviolet rays as described in the first embodiment. It is designed to kill bacteria and other bacteria. The ultraviolet rays radiated from the ultraviolet lamp 26 and traveling straight are shielded by a cross formed between the front-side light shielding members 28a and 28b to prevent leakage to the outside, and the left inlet 27a The right inlet 27b is provided at a distance from the ultraviolet lamp 26, so that leakage of ultraviolet rays can be suppressed to an allowable value or less as much as possible.
[0027]
In the embodiment of the present application, the ultraviolet lamp is disposed in the ultraviolet sterilizer formed in a box shape. However, the embodiment is not limited to this. For example, the base 3 in the first embodiment is used. The rear-side light-shielding member 14 may be disposed on the front surface, the ultraviolet lamp 19 may be disposed on the front surface, and the front-side light-shielding member 17 may be disposed on the rear surface side of the filter 7.
[0028]
【The invention's effect】
As described above, according to the present invention, the ultraviolet lamp is arranged in the vertical direction in the center of the housing, while the front and rear surfaces are made of thin aluminum foil of about 10 to 30 μm on both sides of the ultraviolet lamp. It is contained in the air passing through the inside while preventing leakage of ultraviolet rays to the outside by providing a honeycomb-shaped light shielding member in which about 500 to 1000 hexagonal cylindrical cells are continuously joined per square inch. It is possible to provide an ultraviolet sterilizer that can remove bacteria or other germs and an air cleaner equipped with the same.
[Brief description of the drawings]
FIG. 1 is a sectional view showing an air cleaner provided with an ultraviolet sterilizer according to the present invention.
FIG. 2 is an exploded perspective view of the air cleaner.
FIG. 3A is a cross-sectional view from above of the ultraviolet sterilizer according to the first embodiment.
(B) is a front view of the ultraviolet sterilizer according to the first embodiment.
FIG. 4 is an exploded perspective view of the ultraviolet sterilizer according to the first embodiment.
FIG. 5A is a perspective view showing an ultraviolet light shielding member according to the first embodiment.
(B) is sectional drawing which shows the light-shielding member of the ultraviolet-ray by another Example.
FIG. 6 is a cross-sectional view from above showing the reflected state of ultraviolet rays of the ultraviolet sterilizer according to the first embodiment.
FIG. 7A is a cross-sectional view from above of the ultraviolet sterilizer according to the second embodiment.
(B) is a front view of the ultraviolet sterilizer according to the second embodiment.
FIG. 8 is a cross-sectional view showing a conventional ultraviolet sterilizer and a housing provided with the same.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Front panel 1a Suction port 2 Rear panel 2a Outlet 3 Base 3a Inflow hole 3b Mounting part 4 Fan motor 5 Centrifugal fan 6 Power supply chamber 6a Power supply device 7 Filter 8 Ultraviolet sterilizer 9 Front case 9a, 9b Flange 9c Swelling part 10 Rear Case 11 Rear Holder 12a Left Inlet 12b Right Inlet 13 Front Side Shielding Part 14 Rear Side Shielding Part 15a Left Outlet 15b Right Outlet 16 Protective Body 17 Front Side Light Shielding Member 17a Cell 18 Rear Side Light Shielding Member 18a Cell 19 Ultraviolet lamp 20 Screw 21 Front holder 22 Light shielding member 22a Cell 25 Ultraviolet sterilizer 26 Ultraviolet lamp 27a Front side left inlet 27b Front side right inlet 28a, 28b Front side light shielding member 29a, 29b Rear side light shielding member

Claims (5)

A casing in which an inlet is formed on the front surface and an outlet is formed on the rear surface, an ultraviolet lamp disposed in the casing, and a polygonal cylindrical cell are continuously formed, and the inlet and the outlet are formed An ultraviolet sterilizer characterized by comprising an ultraviolet light shielding member attached to each. 2. The ultraviolet sterilizer according to claim 1, wherein the cells are formed in a hexagonal cylindrical honeycomb shape with open front and rear surfaces. A filter, a first ultraviolet light shielding member in which polygonal cylindrical cells are successively formed, a ultraviolet lamp, and a polygonal cylindrical cell are placed in a main body having an inlet and an outlet, sequentially from the inlet side. An air cleaner comprising a continuously formed second ultraviolet light shielding member and a blower fan. An air purifier in which a filter, an ultraviolet sterilizer, and a blower fan are provided in order from the inlet side in a main body provided with an inlet and an outlet, and the ultraviolet sterilizer is an inlet on the front surface. A casing having an outlet formed on the rear surface, an ultraviolet lamp disposed in the casing, and a polygonal cylindrical cell are continuously formed and attached to the inlet and the outlet, respectively. An air cleaner comprising an ultraviolet light shielding member. The air cleaner according to claim 4, wherein the ultraviolet sterilizer is arranged so that all of the air sucked from the suction port and passed through the filter flows into the ultraviolet sterilizer.

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