Patent ID: 7775374
Filing Date: 2010-08-17
Classification: C02F,Y02A

Abstract:
1. A water purification unit comprising: a fluid inlet adapted to be in fluid communication with a water source; a fluid pump in fluid communication with the fluid inlet, the fluid pump adapted to draw water from the water source to the water purification unit; a prefilter in fluid communication with the fluid inlet and the fluid pump; a main filter in fluid communication with the fluid inlet, the fluid pump, and the prefilter, the main filter adapted to filtrate the water from the water source; a prefilter bypass line in fluid communication with the fluid inlet, the fluid pump, and the main filter, the prefilter bypass line adapted to transport fluid from the fluid inlet to the main filter without passing through the prefilter; a pair of prefilter isolation valves, the pair of prefilter isolation valves adapted to divert fluid to the prefilter bypass line and prevent fluid from entering the prefilter when closed; an expansion tank in fluid communication with the fluid inlet, the fluid pump, the prefilter, and the main filter; a water purification unit outlet in fluid communication with the fluid inlet, the fluid pump, the prefilter, and the main filter, the water purification unit outlet adapted to provide filtered water; a controller, the controller electrically coupled to the fluid pump; a power system to provide electrical energy to the water purification unit; the power system comprising: a cylindrical housing defining an interior space to house the fluid pump, prefilter, main filter, controller and the battery; wherein the fluid pump cycles on when the water purification unit outlet is opened and the fluid pump cycles off when the water purification unit outlet is closed.