Patent ID: 6742577
Filing Date: 2004-06-01
Classification: F28D

Abstract:
A laminate type evaporator in which a large number of refrigerant tubes including at least a pair of first and second refrigerant flow passages are laminated together, comprising:a refrigerant tube group in which a pair of first and second upper tank portions are respectively arranged at one end of the first and second refrigerant flow passages and in which a pair of first and second lower tank portions are respectively arranged at the other end of the first and second flow passages; a refrigerant inlet arranged on the first upper tank portion side of the refrigerant tube at one end of the refrigerant tube group; a refrigerant outlet arranged on the second upper tank portion side of the refrigerant tube at said one end; a first side refrigerant passage communicating the refrigerant inlet with the first lower tank portion of the refrigerant tube at said one end; a second side refrigerant passage communicating the first upper tank portion with the second upper tank portion of the refrigerant tube at the other end of the refrigerant tube group; a third side refrigerant passage communicating the first lower tank portion with the second lower tank portion of the refrigerant tube at said other end; a first partition portion arranged in the first lower tank portions of the refrigerant tube group; and a second partition portion arranged in the second upper tank portions of the refrigerant tube group, wherein the first partition portion and the second partition portion are arranged such that they divide the refrigerant tube group into three refrigerant flow passage groups sequentially circulating all refrigerant introduced from the refrigerant inlet from the first lower tank portion of the refrigerant tube at said one end through all three refrigerant flow passage groups to the second upper tank portion of the refrigerant tube at said one end.