초록 ▼

A reverse osmosis (R.O.) water purifier system that collects and stores pure water at low pressure and dispenses it at high pressure. Impurities left behind when the water passes through a R.O. module are disposed of by two methods: the fast flush method and the slow flush method. In the fast flush

A reverse osmosis (R.O.) water purifier system that collects and stores pure water at low pressure and dispenses it at high pressure. Impurities left behind when the water passes through a R.O. module are disposed of by two methods: the fast flush method and the slow flush method. In the fast flush method, water entering a R.O. module may take two paths to escape therefrom. The first path constrains it to travel through a semi-permeable membrane in the module which filters out undissolved solids and which restrains the passage of dissolved liquids. The second path allows it to travel through the R.O. module, without passing through the membrane, thereby carrying out those impurities left behind by the water passing through the membrane. The purified water is directed to one side of a compartmented storage tank and the waste water from the module is directed to a control valve. From the control valve, the waste water may be directed through a restriction to a drain or it may be directed to the other compartment of the storage tank where the purified water is held. In the slow flush method, water enters a control valve, travels to the R.O. module, and has two paths of escape therefrom. The first path contrains it to go through the semi-permeable membrane in the R.O. module, and through a check valve to storage or outlet. The second path allows the water to escape through the R.O. module, thereby carrying to a drain the impurities left behind.

대표청구항 ▼

In a reverse osmosis storage and recovery system including a R.O. module with a R.O. membrane therein, unpurified water being on an inlet side of said module and purified water on an opposite side thereof, said system including a container member having a slideably mounted piston member therein and

In a reverse osmosis storage and recovery system including a R.O. module with a R.O. membrane therein, unpurified water being on an inlet side of said module and purified water on an opposite side thereof, said system including a container member having a slideably mounted piston member therein and said unpurified water being on opposite sides of said piston member, wherein the improvement comprises: a control means having a second slideably mounted piston member positioned therein; said control means having a first end in fluid communication with said unpurified water and having a second end in fluid communication with said purified water; a bias means positioned within said control means, said bias means and pressure of said purified water combining to urge said control means piston member into an at rest position when said container member is full of purified water the strength of said bias means being preselected so that said strength is insufficient to maintain said control means piston member in its at rest position when said container member is not full of purified water; whereby a call for service effects unseating of said control means piston member from its at rest position by reducing the pressure of said purified water within said control means; whereby said unseating of said control means piston member effects circulation of water through said system; whereby a call for service that empties said system of purified water is operative to fully compress said bias means and to thereby position said closure means piston member in a position opposite to its at rest position; wherein said control means includes a storage port means positioned mid-length of said control means, a bleed port means and a drain port means formed in said control means in circumferentially spaced and flanking relation to said storage port means, a plurality of O ring members that isolate said port means from one another, and wherein said control means piston member is provided with means defining a pair of spaced annular grooves formed therein that selectively align with preselected O ring members to control the circulation of water through said control means responsive to changes in condition of said system.