Patent ID: 8561680

Claim:
A heat exchanger comprising: a first header; a second header spaced apart from said first header by a predetermined distance; a plurality of tubes two ends of each of which are connected with said first and second headers so as to communicate said first and second headers, respectively; a plurality of fins each of which is disposed between adjacent said tubes; a first end cover formed with a first center hole and fixed to a proximal end of said first header; a first sleeve a distal end of which passes through said first center hole so as to extend into said first header and a proximal end thereof is held by a proximal end surface of said first end cover; a first distribution-collection tube fixed to said first sleeve and defining an open proximal end and a closed distal end passing through said first sleeve to extend into said first header in which a plurality of first openings are formed along a longitudinal direction of said first distribution-collection tube in a portion of said first distribution-collection tube extended into said first header; and a first fixing nut screwed onto said first end cover so as to press said proximal end of said first sleeve against said proximal end surface of said first end cover.