Patent ID: 7669643

Claim:
A plate heat exchanger device comprising a plate package ( 2 ) formed by a plurality of heat exchanger plates ( 1 , 1 ′, 1 ″), which are adjacent to each other so that a plate interspace ( 3 , 4 ) is formed between adjacent plates, which plate interspaces form first passages ( 3 ) for a first medium and second passages ( 4 ) for a second medium that is arranged to cool the first medium, wherein the first passages ( 3 ) and the second passages ( 4 ) are arranged beside each other in the plate package ( 2 ) in an alternating order, wherein the first passages ( 3 ) are separated from the second passages ( 4 ), wherein substantially each heat exchanger plate ( 1 , 1 ′, 1 ″) has at least two portholes ( 16 - 19 ) forming a first inlet port channel ( 6 ) and a first outlet port channel ( 7 ), which extend through the plate package ( 2 ) to a first inlet ( 11 ) and to a first outlet ( 12 ), respectively, for the first medium to and from the first passages ( 3 ), wherein the first outlet ( 12 ) forms a gas outlet ( 31 ), which is arranged to permit discharge of substantially gas of the first medium, and a liquid outlet ( 32 ), which is arranged to permit discharge of substantially liquid of the first medium, wherein the liquid outlet ( 32 ) is separated from the gas outlet ( 31 ) for permitting separate discharge of said liquid and said gas, and wherein at least one of the two heat exchanger plates which delimits each first passage ( 3 ), is formed in such a way that a transition between the first passage ( 3 ) and the first outlet port channel ( 7 ) forms a throttle for the first medium flowing out into the first outlet port channel ( 7 ).