TW202138012A - Ultraviolet photocatalyst sterilizer capable of effectively combining ultraviolet sterilization and photocatalyst sterilization to effectively utilize light source - Google Patents

Abstract

The present invention provides an ultraviolet photocatalyst sterilizer, which comprises a resonance chamber, a light source disposed in the center of the resonance chamber, and at least one photocatalyst element disposed in the resonance chamber, wherein the photocatalyst element is provided with a carrier for carrying a photocatalyst material and the surface of the resonance chamber is a smooth surface with light reflection characteristic to enable photons vibrating back and forth in the resonance chamber and thus effectively utilize the light source.

Description

Ultraviolet photocatalyst sterilizer

The present invention is related to sterilizers, especially an ultraviolet light photocatalyst sterilizer.

Ultraviolet light has a good sterilization and disinfection effect, and ultraviolet disinfection lamps have been widely used at present. It is the best method for disinfection and sterilization of infectious viruses. Photocataylst is a catalyst that uses light energy to carry out a catalytic reaction. First, the photocatalyst is coated or sprayed on the surface of the object to form a thin film, which can activate the oxidation or reduction of the foreign substances attached to the surface of the object through the light energy, so as to achieve the purpose of decontamination, sterilization, antibacterial or clean the surface of the object.

A common combination of ultraviolet rays and photocatalysts, such as Taiwan TWI511768B Invention Announcement Patent Case, describes a filter module that covers the photocatalyst material on a metal mesh to increase the area where the ultraviolet rays are effectively irradiated on the photocatalyst and improve the filtering effect. However, in this configuration, the zigzag or arc-shaped metal mesh will make the energy emitted by the ultraviolet light unable to be effectively used.

Based on the above deficiencies, the purpose of the present invention is to provide an effective combination of ultraviolet light sterilization and photocatalyst sterilization, so that the light source can be effectively used.

Based on the above objective, the present invention provides an ultraviolet photocatalyst sterilizer, comprising a resonance chamber, the surface of the resonance chamber is smooth and has light reflection characteristics, a light source is arranged in the middle of the resonance chamber, and at least one photocatalyst The element is arranged in the resonant cavity, and the photocatalyst element has a carrier to carry a photocatalyst material. The surface of the resonant cavity has light reflection characteristics, so that photons oscillate back and forth in the resonant cavity, so that the light source can be effectively used.

Further, the light source has a single-wavelength light source or a continuous light source with a wavelength of less than 450 nanometers, and the light source may be a point light source, a line light source, or a surface light source.

Further, the photocatalyst material is a single metal oxide with semiconductor characteristics, a composite metal oxide or a metal oxide with semiconductor characteristics doped with metal elements.

Further, the resonance chamber may be a cylinder or a polyhedron with a reflection plane.

Further, the photocatalyst element has three parts, of which two parts of the photocatalyst element are respectively arranged at two ends of the resonance chamber, and one or more intermediate intervals are arranged in the resonance chamber.

In order to clearly illustrate the specific implementation, structure, and achieved effects of the present invention, the accompanying drawings are described as follows:

Please refer to Figures 1 to 2, which illustrates a UV photocatalyst sterilizer, including a resonance chamber 10, a light source 20 is arranged in the middle of the resonance chamber 10, and at least one photocatalyst element 30 is arranged at intervals in the resonance chamber 10 In the cavity 10, the photocatalyst element 30 has a carrier to carry a photocatalyst material.

In this embodiment, the inner surface of the resonance chamber 10 is a smooth surface and has light reflection characteristics, so that photons oscillate back and forth in the resonance chamber 10, so that the light source 20 can be effectively used. The wavelength of the light source 20 covers a single wavelength light source or a continuous light source less than 450 nanometers, and the light source can be a point light source, a line light source or a surface light source.

In this embodiment, the carrier can be any solid material, and the carrier itself has holes for fluid to pass through. The photocatalyst material is a single metal oxide with semiconductor characteristics, a composite metal oxide or a metal oxide with semiconductor characteristics doped with metal elements. Single metal oxides with semiconductor characteristics such as zinc oxide (ZnO), titanium dioxide (TiO2), tin dioxide (SnO2), cadmium sulfide (CdS), zirconium oxide (ZrO2), tungsten oxide (WO ₃ ), etc., with semiconductor The characteristic composite metal oxide is a mixture of two or more single metal oxides with semiconductor characteristics in any ratio. The metal oxide doped metal elements with semiconductor characteristics are single or composite metal oxide doped metal elements with semiconductor characteristics, and the metal elements such as gold, silver, platinum, palladium and other metal elements.

In this embodiment, the direction of fluid flow is the direction indicated by the arrow in the figure as the fluid inlet, and the other end is the fluid outlet. The resonance chamber 10 is a cylinder and has four photocatalyst elements 30. The photocatalyst elements 30 can be arranged in the resonance chamber 10 at intervals (as shown in FIG. 1). Two photocatalyst elements 30 are respectively arranged close to the fluid outlet and the fluid inlet, and the other two photocatalyst elements 30 are arranged in the light source 20 at intervals. superior. In other embodiments, the resonance chamber 10 may be a tetragon (as shown in FIG. 2), and the photocatalyst element 30 may be arranged close to the fluid outlet. In other embodiments, the resonance chamber 10 may be a cylinder or multiple The photocatalyst element 30 can be arranged in any position in the resonance chamber 10 in any form. When the light source 20 emits light, the photons oscillate back and forth between the surfaces of the resonance chamber 10 and simultaneously excite The photocatalyst element 30 can not only achieve the best use efficiency of the light source 20, but also achieve the effect of sterilization and disinfection at the same time.

10: Resonance chamber 20: light source 30: photocatalyst element

Fig. 1 is a schematic diagram of the first embodiment.

Fig. 2 is a schematic diagram of the second embodiment.

10: Resonance chamber

20: light source

30: photocatalyst element

Claims (8)

An ultraviolet light photocatalyst sterilizer, which contains: A resonant cavity, the inner surface of the resonant cavity is smooth and has light reflection characteristics; A light source is arranged in the resonance cavity; and At least one photocatalyst element is arranged in the resonant cavity and has a carrier to carry a photocatalyst material. The ultraviolet photocatalyst sterilizer described in item 1 of the scope of patent application, wherein the wavelength of the light source is a single-wavelength light source or a continuous light source with a wavelength less than 450 nanometers. The ultraviolet photocatalyst sterilizer described in item 1 of the scope of patent application, wherein the light source is a point light source, a line light source or a surface light source. The ultraviolet photocatalyst sterilizer described in item 1 of the scope of patent application, wherein the resonance chamber is a cylinder or a polyhedron with multiple reflection planes. The ultraviolet photocatalyst sterilizer described in item 1 of the scope of patent application, wherein the photocatalyst material is a single metal oxide with semiconductor characteristics, a composite metal oxide or a metal oxide with semiconductor characteristics doped with metal elements. In the ultraviolet photocatalyst sterilizer described in item 1 of the scope of patent application, the number of the at least one photocatalyst element is three, and the at least one photocatalyst element is arranged at intervals in the resonance chamber. For the ultraviolet photocatalyst sterilizer described in item 6 of the scope of patent application, two of the photocatalyst elements are respectively arranged at both ends of the resonance chamber. The ultraviolet light photocatalyst sterilizer described in the first item of the scope of patent application, wherein the inner surface of the resonance cavity has ultraviolet light reflection characteristics.

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