Patent ID: 6286590
Filing Date: 2001-09-11
Classification: F25B,F28D,F28F

Abstract:
A heat exchanger with two columns of flat tubes, comprising:a first header having a plurality of first connecting grooves formed in a zigzag arrangement of two columns;a second header having a plurality of second connecting grooves formed in a zigzag arrangement of two columns corresponding to the arrangement of the first connecting grooves in the first header;a plurality of first flat tubes for transferring heat transfer fluid, each of the first flat tubes including a first end connected to one of the first connecting grooves in the first header and a second end connected to one of the second connecting grooves in the second header so that a column of the first flat tubes are at an air inlet side of the heat exchanger;a plurality of second flat tubes for transferring heat transfer fluid, each of the second flat tubes including a first end connected to one of the first connecting grooves in the first header and a second end connected to one of the second connecting grooves in the second header so that a column of the second flat tubes are at an air outlet side of the heat exchanger;a dividing diaphragm arranged in the second header to define first and second separate flow paths extending along the length of the second header, the first flow path being in flow communication with one of the first flat tubes and the second flow path being in flow communication with one of the second flat tubes; andplurality of flow alternating diaphragms arranged in the first and second headers such that the flow alternating diaphragms block passage of heat transfer fluid along the length of the first and second headers to provide alternating direction of heat transfer fluid flow in the first and second flat tubes.