The present invention relates to a portable water purification system by means of UV LEDs. Provided according to the present invention is a portable water purification system by means of UV LEDs comprising: a support member; a plurality of LEDs mounted on the surface of the support member; a solid filter provided with a through-path into which the support member is inserted; and a cover, attached to one end of the solid filter, for sealing the through-path of the solid filter.

A UV sterilization tube includes a hollow tube, a hydroelectric power module and a UV sterilization module. The hollow tube includes an inlet end and an outlet end communicating with each other. The hydroelectric power module is positioned in the hollow tube, and communicates with the inlet end and the outlet end of the hollow tube, wherein the hydroelectric power module generates electric power by a water flow. The UV sterilization module is positioned in the hollow tube, and is electrically connected to the hydroelectric power module. The UV sterilization module includes a UV source and a reflector, wherein the UV source has a light-emitting surface facing to the reflector. A sterilization channel, which communicates with the inlet end and the outlet end of the hollow tube, is between the UV source and the reflector.

A water purification device utilizing ultraviolet lights and a nebulizer is provided. The device includes a tube that receives bacteria laden water at an intake end. The tube includes one or more baffles for causing turbulent flow of the water, and one or more ultrasonic nebulizers for converting the water stream into a mist. The device further includes one or more sources of germicidal ultraviolet light which may be located either inside or outside of the tube.

An apparatus for the treatment of water includes an elongated housing having a first end and a second end. The first end has a water inlet and the second end has a water outlet. An elongated ultraviolet radiation source with a sleeve is concentrically located within the elongated housing. The elongated ultraviolet radiation source has, at its first end, electrical connections, which extend through the second end of the housing and have a second free end held in a support element. The support element includes a supporting structure containing a ring element and from thereon radially inwardly running arms. The arms are designed in such a way that during assembly the arms are resiliently deformed and wherein, if assembled, the arms are pressed against the sleeve, so that the free end of the ultraviolet radiation source is held by the arms in a resilient manner.

A UV reactor irradiates a flow of fluid with UV radiation. The reactor comprises: a fluid conduit defined by a heat conducting conduit body comprising one or more heat conducting walls for permitting a flow of fluid therethrough; a UV-LED operatively connected to a PCB and oriented for directing radiation into the fluid conduit. The PCB comprises a heat conducting substrate having a first surface. The conduit body is in thermal contact with the first surface of the heat conducting substrate. Heat is dissipated from the UV-LED via the heat conducting substrate, the thermal contact between the first surface of the heat conducting substrate and the heat conducting conduit body, and from the one or more heat conducting walls of the heat conducting conduit body to the fluid flowing through the fluid conduit.

Aspects of exemplary fluid disinfection apparatus and methods are described. One aspect is a disinfection apparatus comprising a body comprising a reflecting chamber, a fluid channel to direct a fluid into reflecting chamber, and radiation source positioned to output a disinfecting radiation into the chamber. The body may include an inlet and outlet. For example, the inlet may extend through the body to receive a fluid at a first velocity; the reflecting chamber may extend along an axis of the body; and the outlet may extend through an end of the reflecting chamber to discharge the fluid from the body. In this example, the fluid channel may direct the fluid from the inlet into the reflecting chamber at a second velocity smaller than the first velocity; and the radiation source may be positioned to output the disinfecting radiation into the reflecting chamber toward the outlet.

An apparatus for treating a contaminated fluid has a UV lamp within a tubular housing. A plurality of baffles within the housing create meandering pathways parallel to the lamp for exposing the fluid to the UV light along the entire length of the pathways. A photocatalytic coating on the baffles and inner surfaces of the housing is maintained within a pre-set radial distance, preferably no more than about 75 mm, from the lamp for optimal creation of a photocatalytic reactant. The contaminated fluid flowing through the meandering pathways is maintained in close proximity to the lamp and has adequate time for exposure to the ultraviolet light and photocatalytic reactant for treatment before exiting the housing. The baffles are removably positioned within the housing for convenient maintenance or to alter the length of the pathways, without re-sizing the housing. This apparatus is considered an affordable and compact environmental protection device capable of redefining pollution control by potentially mitigating close to 100% of harmful bacteria and toxic compounds.

The present invention is a device for sterilizing microorganisms on a liquid or solid substrate. The device includes a light source for producing a continuous light and an optical device positioned proximate the light source. The optical device is configured to focus the light generated by the light source to provide a continuous high intensity light output. The optical device also includes a dichroic reflector. The dichroic reflector is configured to pass thermal energy generated by the light source and reflect the light produced by the light source. The device also includes a power supply, where the power supply is coupled to the light source and the optical device. The device thereby killing microbial organisms presented within the range of the continuous high intensity light output.

A method for disinfecting a fluid includes emitting UV light into a flowing fluid pillar along its axial direction. The flowing fluid pillar is surrounded by and in contact with a fluid medium having a refractive index lower than that of the fluid to be disinfected so that total internal reflection occurs when the UV light travels within the flowing fluid pillar. Also provided is a UV disinfector for disinfecting a flowing fluid.

This invention is directed to a method, system and apparatus for the treatment fluids. An apparatus for the treatment of a fluid comprises a fluid chamber and at least one ultraviolet light unit arranged at a periphery of the fluid chamber. The at least one ultraviolet light unit comprises at least one ultraviolet light emitting diode and an ultraviolet light directing element. The ultraviolet light directing element is configured to collimate at least a portion of the light emitted from the at least one ultraviolet light emitting diode in use such that the ultraviolet light rays emitted from each ultraviolet light unit are parallel in a first plane. Also described is a method for the cooling a light emitting diode in a fluid treatment system.