This application provides an air purifier, which includes a casing, a fan, a filter, and a photocatalytic module. The filter is in a cylindrical shape. The photocatalytic module includes a photocatalytic cylinder having a cylindrical shape and a light source for irradiating the photocatalytic cylinder. The photocatalytic cylinder is disposed in the filter, an upper end of the photocatalytic cylinder is supported in the casing, and the light source is installed in the casing. In the present application, the air purifier is provided with a photocatalytic module which can decompose harmful gases and enables a sterilization, thus the purification performance can be improved. The filter and the photocatalytic cylinder both have a cylindrical shape, and the photocatalytic cylinder is disposed in the filter.

An electronic device and a keyboard module thereof are provided. The keyboard module includes a base plate, a plurality of key structures, a backlight module, and a photocatalyst layer. The base plate includes a plurality of openings. The plurality of key structures is disposed on the base plate and respectively corresponds to the openings. The backlight module is disposed under the base plate and includes a visible light emitting unit and an ultraviolet light emitting unit. The photocatalyst layer is coated on a lower surface of the base plate. An electronic device having the keyboard module is further provided.

Aspects of the present disclosure provide a system for abating a hydrocarbon compound (HCC) in air using photocatalytic oxidation (PCO). For example, the system can include an air handling unit (AHU), a sensor and a control panel. The AHU can be configured to abate HCC in air using PCO. The sensor can be configured to sense a level of the HCC in the air. The control panel can be configured to control the AHU based on the level of the HCC.

To improve effectiveness of photocatalytic systems, a non-planar reflective surface is provided within a photocatalytic system with photocatalytic cells. The non-planar surface reflects ultraviolet (UV) rays in more-desirable directions, thereby permitting greater interaction between the UV rays and the photocatalytic cells. The increased interaction improves the performance of the photocatalytic system. For some embodiments, the non-planar reflective surface comprises a first protrusion and a second protrusion. The protrusions provide larger reflective surfaces as well as more-varied directionality of reflection, as compared to a flat surface.

An ultraviolet air sterilizer for disinfecting bacterium and virus includes a shell, a sandwich activated carbon cloth filter element, a nanometer titanium dioxide screen filter, an ultraviolet light source, a heat sinking kit, and a fan. The shell includes a shell body and a cover plate. The shell body is provided with an air inlet and an opening. The cover plate is provided with an air outlet. The sandwich activated carbon cloth filter element, the nanometer titanium dioxide screen filter, the heat sinking kit and the fan are arranged sequentially along an air path from the air inlet to the air outlet. The ultraviolet light source is configured for emitting ultraviolet light to the nanometer titanium dioxide screen filter. The air sterilizer has a compact small-sized structure and effectively removes ambient gaseous as well as particulate pollutants and kills micro-organisms harmful to health and well being.

The disclosure is directed to an air purifier and an automobile air conditioner with an air purifier. The air purifier includes a reactor, a column, an air guider and a plurality of light emitting elements. The reactor includes an air inlet and an air outlet. The column is disposed in the reactor, and the column has a N-side walls. The air guider is disposed on the column, and the air guider is coated with a photocatalyst. The light emitting elements are placed on the N side walls of the column configured to irradiate on the photocatalyst, where each of the light emitting elements has an emitting angle of θ and θ*N>360°.

The present application provides a wall-mounted air purifier, including casing, a filter installed in the casing, and a fan installed in the casing. The casing is defined by an air inlet and an air outlet, and the air outlet is located at the position corresponding to the outlet of the fan. The filter is arranged between the air inlet and the fan, a photocatalytic module is installed in the casing, and the photocatalytic module is arranged between the air inlet and the fan. The wall-mounted air purifier provided in the present application filters and purifies the air by arranging a filter in the casing; and arranging a photocatalytic module in the casing to sterilize and disinfect the gas entering the air inlet and decompose harmful molecules in the gas for better purifying the air and improving the air purification capacity.

The present invention provides a wireless rechargeable and portable anti-microbial respirator. The respirator includes a face-piece with an air inlet and an air outlet; a first belt and a second belt, the first belt is connected to ends of the face-piece, and the second belt is configured to wrap around the waist of a user; a flexible outlet tube, where the first end of the flexible outlet tube is connected to the air outlet of the face-piece; a flexible intake tube, where the first end of the flexible intake tube is connected to the air inlet of the face-piece; and a filtration system fixed onto the second belt. The key features of the respirator in the present invention include highly antibacterial and antiviral, long duration, reusable, self-cleaning and self-disinfecting, lightweight and portable, wireless power transfer, and great airflow and comfortable breathing.

This disclosure discloses an air purification apparatus, and the air purification apparatus includes an inner housing, a plurality of photocatalytic reactors and a light source. The inner housing is porous to allow air flow to pass. The photocatalytic reactors are filled in the inner housing. The photocatalytic reactors respectively have a photocatalytic layer formed thereon. The light source is disposed in the inner housing and surrounded by the photocatalytic reactors. The light source is configured to irradiate photocatalytic reactors to activate the photocatalytic layers on the photocatalytic reactors.

A light includes a light emitting diode (LED) package to emit visible light, an electronics module coupled to the light emitting diode package, and a dome or fixture having a coating containing Photocatalytic Titanium Dioxide optically coupled to the light emitting diode package such that the coating containing Titanium Dioxide acts as a photo-catalyst responsive to LED emitted light.