ROTATIONALLY SYMMETRIC PHOTOANALYTIC REACTOR FOR WATER PURIFICATION

Devices, systems, and methods for the purification of water with a photoreactor. A continuous flow water purification photoreactor having a water inlet, a plurality of illumination sources disposed about a central axis facing and having n-fold rotational symmetry about the central axis, a reaction tube, and a water outlet. The reaction tube including a set of bundled rods having m×n-fold symmetry wherein the bundled rods include a photocatalyst support material at least partially coated with a photocatalyst film. 1. A continuous flow water purification photoreactor , comprising:a water inlet;a plurality of illumination sources disposed about a central axis facing and having n-fold rotational symmetry about the central axis, where n is a whole number; 'a set of bundled rods having m×n-fold symmetry, where m is a rational number and wherein the bundled rods comprise a photocatalyst support material at least partially coated with a photocatalyst film; and', 'a reaction tube comprisinga water outlet, wherein the water inlet is fluidly coupled to a proximal end of the reaction tube and the water outlet is fluidly coupled to a distal end of the reaction tube.2. The continuous flow water purification photoreactor of claim 1 , further comprising a housing.3. The continuous flow water purification photoreactor of claim 1 , wherein the illumination sources comprise LEDs emitting in a UV range.4. The continuous flow water purification photoreactor of claim 1 , wherein the photocatalyst support material comprises quartz and/or fused silica.5. The continuous flow water purification photoreactor of claim 1 , wherein the photocatalyst support material is porous allowing water to pass through.6. The continuous flow water purification photoreactor of claim 1 , wherein the photocatalyst comprises TiO7. A water purification system claim 1 , comprising a continuous flow water purification photoreactor coupled to a water source claim 1 , the continuous flow water purification ...

Liquid storage facility

Drip coffee maker with electronically-controlled variable valve

A drip coffee maker includes an electronically-controllable variable valve to regulate water/coffee contact time in a brew basket. In some instances, the electronically-controllable variable valve may be movable within a continuous range of positions and may be disposed downstream of the brew basket to regulate the flow rate of coffee produced in the brew basket to a brewing container. In addition, in some instances, the electronically-controllable variable valve may include a valve member that projects through a port and moves along a first axis to vary a fluid flow rate through the port, and a wedge body that moves along a second axis and includes an inclined surface capable of causing movement of the valve member along the first axis in response to movement of the wedge body along the second axis.

Drip coffee maker with two dimensional brew selection interface

A two dimensional brew selection interface is used to configure a plurality of brewing parameters used in a drip coffee brewing operation. The two dimensional brew selection interface may include a plurality of positions distributed across first and second dimensions, with each position mapped to a set of values for multiple brewing parameters such that selection of a position in the two dimensional brew selection interface enables the mapped values for the brewing parameters corresponding to the selected position to be used in the drip coffee brewing operation. In some instances, the positions may additionally be mapped to particular flavor attributes, and in some instances, particular taste-like flavor attributes, to further simplify a user's selection of a desired position in the two dimensional brew selection interface

Density-based coffee roast level characterization and/or dynamic coffee grinder control

A roast level of coffee grounds used in a coffee brewing operation may be characterized based at least in part on one or more weights of the coffee grounds determined during a grinding operation, and in some instances, may be used to determine one or more brewing parameters used in the coffee brewing operation. In addition, in some instances the roast level of the coffee grounds may be determined during a grinding operation and used to control the amount of coffee grounds generated during the grinding operation.