Patent ID: 7727312

Claim:
Device for drying a compressed gas in a non-dissipative manner, comprising a compressed gas supply ( 2 ), two pressure vessels ( 31 , 32 ) with an input ( 33 , 34 ) and an output ( 35 , 36 ), and a take-off point ( 26 ) for compressed gas consumers, a first distribution device ( 3 ) onto which said compressed gas supply ( 2 ) and the take-off point ( 26 ) are connected and which is also connected to each of the respective outputs ( 35 and 36 ) of the pressure vessels ( 31 and 32 ), the said first and second, distribution devices ( 3 and 13 ) being connected to each other, and further comprising nine or ten cut-off valves ( 7 - 12 , 21 , 22 , 29 , 38 and 40 ); wherein said first distribution device ( 3 ) comprises three parallel connected pipes ( 4 , 5 and 6 ) in which are provided for each pipe two cut-off valves ( 7 , 8 ; 9 , 10 ; 11 , 12 ) and onto which, for each pipe is connected, between two cut-off valves ( 7 , 8 ; 9 , 10 ; 11 , 12 ), a branch, namely a first pipe ( 4 ) with a first branch ( 23 ) which provides a connection to the second distribution device ( 13 ), a second pipe ( 5 ) with a second branch ( 25 ) which is connected to the take-off point ( 26 ) for a compressed gas consumer; and a third pipe ( 6 ) with a third branch ( 27 ) serving as a connection to the compressed gas supply ( 2 ) and a fourth branch ( 28 ) which is connected to the second distribution device ( 13 ) via a cut-off valve ( 29 ) and further wherein said second distribution device ( 13 ) comprises three parallel connected pipes ( 14 , 15 and 16 ), including a first pipe ( 14 ) and a second pipe ( 15 ) in which are provided two non-return valves ( 17 , 18 and 19 , 20 ) with an opposite flow direction and a third pipe ( 16 ) with two cut-off valves ( 21 and 22 ) therein, said first pipe ( 14 ) and second pipe ( 15 ) respectively being each connected between the two non-return valves ( 17 , 18 and 19 , 20 ) to said fourth branch ( 28 ) and the first branch ( 23 ) of the first distribution device ( 3 ) respectively, and wherein the first and the third pipe ( 14 and 16 ) of the second distribution device ( 13 ) are mutually connected via a cooler ( 30 ) between the non-return and cut-off valves ( 17 , 18 and 21 , 22 ).