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US 10,246,348 B2Granted
Ultraviolet disinfection system
AssigneeRayVio Corporation
InventorsDouglas A. Collins, Li Zhang, Yitao Liao
Life of this patent
Estimating the term…
Abstract
Embodiments of the invention include an elongate chamber. A UV source includes a semiconductor device, the semiconductor device including an active layer disposed between an n-type region and a p-type region. The active layer emits radiation having a peak wavelength in a UV range. The semiconductor device is positioned on a wall of the elongate chamber. An inner surface of the elongate chamber is reflective.
Claims26
A water disinfection vessel comprising:
- an inner wall of the vessel that reflects light;
- a first ultraviolet (UV) light emitting diode (LED) injecting UV light into the vessel;
- a first optical detector detecting a transparency of water in the vessel, wherein the transparency is related to impurities in the water;
- a second LED that emits non-UV light of a wavelength that is absorbed by microbes in the water, wherein the first optical detector detects light from the second LED that passes through the water to detect absorption of light by the microbes;
- a controller circuit configured to receive signals from the first optical detector to determine the transparency of the water;
- and
- the controller circuit configured to control a UV dosage from the first UV LED based, at least in part, on the transparency of the water.
4 more elements
A water disinfection vessel comprising:
- an inner wall of the vessel that reflects light;
- a first ultraviolet (UV) light emitting diode (LED) injecting UV light into the vessel;
- a first optical detector detecting a transparency of water in the vessel, wherein the transparency is related to impurities in the water;
- a controller circuit configured to receive signals from the first optical detector to determine the transparency of the water;
- and
- the controller circuit configured to control a UV dosage from the first UV LED based, at least in part, on the transparency of the water,
- wherein the first optical detector detects UV light, wherein the first optical detector is positioned in the vessel remotely from the first UV LED, and wherein the first optical detector detects the light from the UV LED that passes through the water to measure the transparency of the water to UV light.
4 more elements
A water disinfection vessel comprising:
- an inner wall of the vessel that reflects light;
- a first ultraviolet (UV) light emitting diode (LED) injecting UV light into the vessel;
- a first optical detector detecting a transparency of water in the vessel, wherein the transparency is related to impurities in the water;
- a controller circuit configured to receive signals from the first optical detector to determine the transparency of the water;
- and
- the controller circuit configured to control a UV dosage from the first UV LED based, at least in part, on the transparency of the water,
- wherein the first optical detector detects light from the first UV LED, and
- wherein the controller circuit is configured to receive the signals from the first optical detector and generate a warning signal if the first UV LED is not working properly.
5 more elements
A water disinfection vessel comprising:
- an inner wall of the vessel that reflects light;
- a first ultraviolet (UV) light emitting diode (LED) injecting UV light into the vessel;
- a first optical detector detecting a transparency of water in the vessel, wherein the transparency is related to impurities in the water;
- a controller circuit configured to receive signals from the first optical detector to determine the transparency of the water;
- and
- the controller circuit configured to control a UV dosage from the first UV LED based, at least in part, on the transparency of the water,
- wherein the controller circuit is configured to automatically and periodically energize the first UV LED and detect the signals from the first optical detector.
4 more elements
A water disinfection system comprising:
- a container for disinfecting water;
- a UV LED emitting UV light into the water for disinfecting the water;
- an air source for supplying bubbles;
- and
- a motorized stirring mechanism for agitating the water while the air source is supplying bubbles in the water and so as to push the bubbles downward for extending the effective lifetime of the bubbles.
2 more elements
A water disinfection vessel comprising:
- an inner wall of the vessel that reflects light, the inner wall being configured to hold water;
- a removable cap for sealing a top opening in the vessel for adding and removing the water;
- a first ultraviolet (UV) light emitting diode (LED) supported by the cap for injecting UV light into the vessel;
- the inner wall having a generally parabolic shape surrounding the UV LED that curves inward towards the UV LED for reflecting light emitted from the UV LED downward into the water;
- and
- a controller circuit in the cap for controlling energization of the UV LED.
3 more elements
Dependencies are inferred from the claim text.