A portable water treatment system comprising a water processing unit that automatically determines whether the system is connected to a pressurized water source or not. If an unpressurized source is detected, the system activates a pump to ensure that the water flows through the system at a pressure level to remove particulates and ensure the ultraviolet (UV) light is effective at neutralizing viruses and bacteria. If the water source is pressurized, the pump is deactivated and the water flows through the system under the pressure of the pressurized source. The system uses a failsafe mechanism to 1) ensure that water cannot flow through the water treatment unit if the UV light chamber is not powered and 2) ensure the user can know that the UV light is in fact functioning through the use of an indicator.

A sterilizing module includes a main body and a light source. The main body includes an inner surface, an outer surface and an internal space to treat a target substance in a fluid and connected an inlet and a outlet. The light source is configured to emit light toward the internal space to sterilize the target substance in the fluid. The light source includes a substrate and a plurality of light emitting structures disposed on the substrate. The plurality of light emitting structures is disposed to be spaced apart each other. A first distance between two light emitting structures is adjacent to each other varies depending on a second distance from each light emitting structure to the inner surface of the main body. The second distance has a maximum value and a minimum value of illuminance and a difference between the maximum and the minimum value thereof is about more than 75%.

Disclosed is an ultraviolet light disinfection apparatus mounted on a water pipe that is connected to a massage pool. The ultraviolet light disinfection apparatus comprises: a housing mounted on the water pipe and in closed connection with the water pipe; a PCB disposed inside the housing and provided with a UVC-LED light source and a wire, the wire protruding from the housing to connect to the power source; an ultraviolet light-transmitting body disposed on the housing, such that ultraviolet light at UVC wavelength range produced by the UVC-LED light source can enter into water body inside the water pipe through the ultraviolet-transmitting body. The present invention can disinfect the water body inside the water pipe. Also provided are a control box and a massage pool.

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.

A light emitting device comprises: a body which is arranged on the liquid surface that forms the boundary between air and liquid, and which can move up, down, right, or left in accordance with the floating of the liquid surface; and a light source unit, which is mounted on the body so as to emit light at the liquid, thereby processing the liquid.

An apparatus for treating a fluid comprises a fluid container having a chamber for holding the fluid and an ultraviolet (UV) reactor. The UV reactor comprises: an inlet in fluid communication with the chamber; an outlet located above the inlet; a conduit extending longitudinally between the inlet and the outlet to facilitate fluid flow from the inlet to the outlet in a first direction having a component antiparallel to the direction of gravity; and a UV emitter optically oriented to emit UV radiation directed toward the fluid travelling through the conduit. At least part of the chamber is located above the outlet to cause the fluid to flow from the chamber to the inlet and through the conduit to the outlet due to force of gravity.

Ultraviolet irradiation of liquids for purposes of sterilization, disinfection, cleaning and/or treatment. A liquid collection reservoir can receive an inflow of a liquid. A filtering unit can filter the inflow of liquid received by the liquid collection reservoir. A liquid chamber stores the liquid. Ultraviolet light emitting sources located about the liquid chamber irradiate the liquid in the liquid chamber with ultraviolet light. A control unit, operatively coupled to the ultraviolet light emitting sources, controls the irradiation of the liquid in the liquid chamber with the ultraviolet light emitting sources. The control unit is configured to control an intensity and a duration of the irradiation as a function of time that the liquid is stored in the liquid chamber and the amount of the liquid that is in the liquid chamber.

An apparatus for sterilizing a liquid comprises a container (10) having an inlet (12), an outlet (14) and an interior (16) with an outer wall (18), and at least one light source (32) which is adapted to emit radiation in the ultraviolet wavelength range, in particular UV-C radiation, through the outer wall (18) into the interior (16), the outer wall (18) of the interior (16) for this purpose being configured to be at least partially transparent. The inlet (12) comprises at least one opening (28), which is positioned and aligned in relation to the outer wall (18) of the interior (16) and the at least one light source (32) in order, when a pressure is exerted on the liquid to be admitted through the at least one opening (28) and to be sterilized, to form a liquid jet (30) directed onto the outer wall (18) in a region of the at least one light source (32) and/or above the latter, and/or to form a liquid film (31) there. The liquid jet (30) impinging on the outer wall (18) may, for example, flow down thereon as a thin liquid film (31) in front of the at least one light source (32) and thereby lead to effective sterilization even with a low penetration depth of the UV radiation.

An optical arrangement for disinfection in apparatuses operating with air or a liquid comprises at least one radiation source or at least one group of radiation sources, which emits or jointly emit radiation in the ultraviolet wavelength range, at least one beam collecting optical unit, which collects the radiation emitted by the radiation source or the group of radiation sources, a number of beam delivering optical units, each configured to receive the radiation collected by the at least one beam collecting optical unit, and also a number of effect zones spatially separated from one another, into which the radiation delivered via the beam delivering optical units is emitted in order to bring about a disinfecting effect.

A perfusion chamber for use in a phantom includes a waterproof housing containing a porous material defining fluid paths between pores and tubular channels within the porous material. A reservoir for use in a phantom, a pump mechanism for use within the bore of an MRI scanner, a phantom for use in an MRI scanner, and a method for calibrating a scanning device are disclosed. Also disclosed is apparatus for validating images of a phantom that includes: one or more sensors for coupling to a phantom to be imaged; a control/logging system configured to: collect sensor data during imaging of the phantom and pass this as input to a computer model; compare the image data with reference image data produced using the computer model; and return a pass score depending on the comparison. A system and method for verifying images of a phantom are also disclosed.