Reverse osmosis water system with heat forward function
A reverse osmosis (RO) system is described that is connectable to a dialysis machine and is capable of using heated purified water to clean and disinfect an external connection section or portion disposed between the RO system and the dialysis unit (or any other external heat tolerant device) without forming a closed loop system between both systems before and during a heat forward process. This can be accomplished without the need for direct/indirect or wired/wireless communication with the dialysis unit or the need to introduce a chemical cleaner or process that would require further rinsing after chemical disinfection.
1. A reverse osmosis (RO) system configured for sanitizing an external heat tolerance device with heated purified water, the RO system having an inlet for receiving potable water from an external potable feed water supply and an internal storage tank for storing purified water, the RO system having at least one RO membrane unit adapted to receive water from the potable feed water supply and configured to purify the water and deliver the purified water through a delivery conduit, the RO system comprising:
a controller module configured to activate a heat sanitizing cycle within a sanitizing system, the controller module further including a heating power management control circuit configured to isolate the RO system and drive heated sanitized purified water through to the inlet of an external heat tolerant device;
a variable frequency drive (VFD) pump coupled to an inlet of the at least one RO membrane unit and communicatively coupled to a controller module, the VFD pump configured to operate at a first pumping rate until an average feed water supply temperature and pressure is determined and then transitioning to a second pumping rate, the VFD pump further configured to draw water from the storage tank to stabilize the VFD pump from pressure fluctuations in the external feed water supply;
a solenoid valve and manifold assembly communicatively coupled to the controller module and to the VFD pump, the controller module configured to control flow of the feed water supply and the purified water; and
a low flow velocity sensor communicatively coupled to the controller module and the VFD pump and configured to initiate VFD pump stabilization upon sensing a purified water flow below a predefined level.
2. The RO system of claim 1 further comprising an inline heating element with an integral thermal sensor configured to raise the temperature of the reverse osmosis purified water.
3. The RO system of claim 1 wherein the controller module is communicatively coupled to a plurality of solenoid control valves and with the VFD pump and is adapted to regulate flow and water pressure applied to the at least one RO membrane unit and thus production of heated purified water flow into and out of the inlet of the external heat tolerant device.
4. The RO system of claim 1 wherein the controller module is communicatively coupled to a plurality of solenoid control valves and with the VFD pump and is adapted to regulate flow and water pressure applied to the at least one RO membrane unit and distribution of heated purified water flow throughout the RO system.
5. The RO system of claim 1 wherein the external heat tolerant device includes a dialysis machine.