Patent ID: 7367203

Claim:
A refrigerant evaporator for exchanging heat between a fluid to be cooled flowing through an outer portion and a refrigerant flowing through an inner portion, the refrigerant evaporator comprising a first path portion and a second path portion extending between a refrigerant inlet portion and a refrigerant outlet portion; a core portion formed by tubes arranged in parallel; refrigerant collecting portions where the refrigerant is collected after flowing through said first path portion; and refrigerant distributing portions for distributing the refrigerant to said second path portion; wherein said core portion includes a first row of the tubes on a front side and a second row of the tubes on a rear side to form said first path portion and said second path portion on substantially a right and a left region; said refrigerant collecting portions include a structure for collecting the refrigerant from said first path portion in a manner of being divided to the right region and the left region; said refrigerant distributing portions are formed by a pair of tank portions disposed on the front side and the rear side, respectively, the refrigerant distributing portions have a structure in which said second path portion is formed in a region different from said first path portion in terms of a right-and-left direction; said refrigerant collecting portions and said refrigerant distributing portions are connected together through a pair of communication members; and communication is blocked at portions where said tank portions are not to be in communication with interiors of said communication members by using side surfaces of said communication members.