Water purification system

Abstract

The inventions relate to purifying water and can be used in domestic water purification systems. The claimed filtered water storage unit for the storage device of a water purification system includes a housing, an elastic chamber for filtered water, and a region for pressurizing untreated water. The water purification system includes a reverse osmosis membrane, a clean water discharge pipe, an overflow into a drain, a clean water tap, and a storage device having a filtered water storage unit and a hydroautomatic unit. The outlet of the controlled chamber of a valve is associated with the water pressurizing region in the housing of the water storage unit, and the input of the controlling chamber of a valve is associated with the clean water discharge pipe upstream of the tap, wherein the valve for controlling water pressurization is normally open and the valve for controlling drainage is normally closed.

1 . A water storage unit for a storage device of a water purification system, the water storage unit comprising:
 a housing having a cavity and a first port, the first port in communication with a first line to receive and transmit non-treated water;   a monolithic chamber having a rigid neck, an elastic body, and a second port, the chamber located inside the cavity and the neck fixed rigidly to the housing, the second port in communication with a second line to receive and transmit filtered water, the neck made of a thermoplastic elastomer having a first supramolecular structure, the body made of the thermoplastic elastomer in which the first supramolecular structure is modified to form a second supramolecular structure that is biaxially-oriented; and   a pumping zone formed in the cavity between the chamber and the housing, the pumping zone and the chamber capable of storing separate volumes of the non-treated water and the filtered water, the volumes capable of being increased and decreased reciprocally via the first port and the second port to form cyclical loads on the elastic body of the chamber, wherein the first supramolecular structure provides fixation rigidity of the neck to the housing, while the second supramolecular structure provides increased resistance of the body to the cyclical loads.   
     
     
         2 . The water storage unit of  claim 1 , wherein chamber is hermetically separated from the cavity of the housing. 
     
     
         3 . The water storage unit of  claim 1 , wherein the thermoplastic elastomer is a polyolefin or a styrene. 
     
     
         4 . The water storage unit of  claim 1 , wherein the first port provides bidirectional flow of the non-treated water among the pumping zone and the first line. 
     
     
         5 . The water storage unit of  claim 1 , wherein the second port provides bidirectional flow of the filtered water among the chamber and the second line. 
     
     
         6 . The water storage unit of  claim 5 , wherein the neck has a first wall and the body has a second wall, the second wall being at least 20% thinner than the first wall. 
     
     
         7 . The water storage unit of  claim 6 , wherein thickness of the second wall is between about 0.1 mm and about 5 mm. 
     
     
         8 . The water storage unit of  claim 6 , wherein thickness of the second wall is between about 0.3 mm and about 2 mm. 
     
     
         9 . The water storage unit of  claim 1 , wherein the chamber is formed by two-stage blow forming of the thermoplastic elastomer. 
     
     
         10 . The water storage unit of  claim 1 , wherein the neck is blow-formed from the thermoplastic elastomer, the neck having the first supramolecular structure. 
     
     
         11 . The water storage unit of  claim 10 , wherein the body is blow-formed from the thermoplastic elastomer that extends the body from the neck, the body having the second supramolecular structure. 
     
     
         12 . The water storage unit of  claim 11 , wherein cold orientational crystallization forms the second supramolecular structure that is biaxially-oriented. 
     
     
         13 . A water storage unit for a storage device of a water purification system, water storage unit comprising:
 a housing;   a monolithic chamber located inside the housing for filtered water, the chamber comprising a neck and a body, the neck formed from a thermoplastic elastomer and the body formed from the thermoplastic elastomer modified to a biaxially-oriented structure, the neck rigidly connecting the chamber to the housing; and   a pumping zone for non-treated water formed by a space between the chamber and the housing.   
     
     
         14 . The water storage unit of  claim 13 , wherein chamber is hermetically separated from the space of the housing. 
     
     
         15 . The water storage unit of  claim 13 , wherein the thermoplastic elastomer is a polyolefin or a styrene. 
     
     
         16 . The water storage unit of  claim 13 , wherein the housing comprises a first port to provide bidirectional flow of the non-treated water into and out of the pumping zone. 
     
     
         17 . The water storage unit of  claim 13 , wherein the chamber comprises a second port to provide bidirectional flow of filtered water into and out of the chamber. 
     
     
         18 . The water storage unit of  claim 13 , wherein the neck has a first wall and the body has a second wall, second wall being at least 20% thinner than the first wall. 
     
     
         19 . The water storage unit of  claim 18 , wherein thickness of the second wall is between about 0.1 mm and about 5 mm. 
     
     
         20 . The water storage unit of  claim 18 , wherein thickness of the second wall is between about 0.3 mm and about 2 mm.