JPS6041972Y2 - UV cleaning equipment - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an ultraviolet cleaning device.

Ozone generated by ultraviolet lamps is used to decompose and clean pollutants.
For example, when a low-pressure mercury lamp is lit, the wavelength is mainly 2.
Ultraviolet rays at the mercury resonance line of 54 nm are emitted to the outside, and ultraviolet rays at 851 m, as well as a small amount of other wavelengths, are emitted.

Then, ozone is converted into raw material by ultraviolet rays with a wavelength of 185 nm, and then this ozone is decomposed by UV light with a wavelength of 254 nm, producing oxygen as a generating group.This generating group oxygen decomposes organic pollutants and scatters in a gaseous state. Are known.

This ultraviolet cleaning device can be applied to various objects to be cleaned.
For example, some objects to be cleaned, such as objects to be cleaned made of film-like polymeric materials, may deform and change in quality when heated to high temperatures.

On the other hand, since the irradiation light from an ultraviolet lamp also includes infrared rays, the temperature of the object to be cleaned increases during cleaning, and although it varies depending on factors such as the reflectance of the surface of the object to be cleaned, the temperature ranges from several tens of degrees Celsius to It will be about 10 division 'C.

Therefore, objects made of materials that change in quality at this temperature are subject to restrictions as objects to be cleaned, so it may be impossible to clean them with this ultraviolet cleaning device, or the cleaning time must be shortened to prevent the change in quality. However, as a result, there were problems such as insufficient cleaning.

Therefore, the purpose of the present invention is to provide an ultraviolet cleaning device that can completely clean objects made of materials that are easily altered by heat. This is an ultraviolet cleaning device that decomposes and cleans organic contaminants adhering to the surface of an object to be cleaned by using oxygen from generated radicals that are generated during decomposition. It is characterized by a heat shield plate with water interposed between glass plates.

The present invention will be specifically described below based on embodiments shown in the drawings.

FIG. 1 shows a sectional view of the device, and the device box 1 has a built-in lamp body 2 and has a double structure to prevent generated ozone from leaking to the outside.

Inside the lamp body 2 is an irradiation chamber 3, and above this irradiation chamber 3, two U-shaped 350W high output low pressure mercury lamps are arranged as ultraviolet lamps 4.

A mirror 5 is placed behind the ultraviolet lamp 4, and the light from the ultraviolet lamp 4 is directed downward.

Note that a cooling water channel 6 is fixed to the top surface of the lamp body 2.
The ultraviolet lamp 4 and mirror 5 are cooled.

In the center of the irradiation chamber 3, an object to be cleaned 7 made of a polymeric material is supported by a support 8, and a heat shield plate 9 is provided between the object to be cleaned 7 and the ultraviolet lamp 4. The ultraviolet rays pass through this heat shield plate 9 and are irradiated onto the object 7 to be cleaned.

As shown in FIGS. 2 and 3, the heat shield plate 9 has a water channel 92 between two quartz glass plates 91, through which water W flows. However, it has the property of blocking heat rays well, and this is utilized.

On the side of the lamp body 2, there are provided an intake hole 10 for supplying oxygen-containing gas to the irradiation chamber 3, and an exhaust hole 11 for discharging the internal gas together with decomposed contaminants. The gas sucked through 11 is treated in an ozone decomposition chamber and then released into the atmosphere.

When water is poured into the cooling channel 6 and the channel 92 of the shielding plate 9 and the ultraviolet lamp 4 is turned on, the ultraviolet rays pass through the heat shielding plate 9 and are irradiated onto the object to be cleaned 7 to be cleaned. The generated heat is cooled by the cooling water in the cooling water channel 6, and is blocked by the heat shield plate 9, so that almost no heat is radiated to the object to be cleaned 7.

Although the ultraviolet lamp 4 is a high-output, low-pressure mercury lamp as described above and generates a large amount of heat, the temperature of the object to be cleaned 7 will only rise by a few degrees Celsius to more than ten degrees Celsius above room temperature even if it is irradiated for a long time. Ta.

Therefore, even if the object to be cleaned 7 is made of a film-like polymeric material, it will not be deformed or deteriorated, and the irradiation time can be arbitrarily selected, so that it can be cleaned until the organic contaminants are completely decomposed. Is possible.

As explained above, in this invention, a heat shield plate with water interposed between two quartz glass plates is disposed between the ultraviolet lamp and the object to be cleaned, so it is made of a material that is easily altered by heat. It is possible to provide an ultraviolet cleaning device that can completely clean even objects to be cleaned.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an embodiment of the present invention, FIG. 2 is an enlarged view of portion A in FIG. 1, and FIG. 3 is a perspective view of a heat shield plate. 1...Equipment box, 2...Light body, 3...
...Irradiation chamber, 4...Ultraviolet lamp, 5...
...Mirror, 6...Cooling channel, 7...
・Object to be cleaned, 8...Support, 9...Heat shield plate, 91...Quartz glass plate, 92...
・Waterway, W...Water.

Claims (1)

[Scope of utility model registration request] This is an ultraviolet cleaning device that generates ozone using the light of an ultraviolet lamp, and decomposes and cleans organic contaminants that adhere to the surface of the object to be cleaned using the generated oxygen generated by the decomposition of this ozone. An ultraviolet cleaning device comprising a heat shield plate with water interposed between two quartz glass plates between the body and the object to be cleaned.