Mitsubishi Heavy Industries Limited

Yasunobu Joboji

Jun Ito

Koji Nakado

Takamitsu Himeno

Katsuhiro Saito

Hitoshi Tamaki

At the refrigerant inlet/outlet side surface portion of laminated flat tubes, there is provided a first side refrigerant passage, and in the upper portion of the other side surface portion, there is provided a second side refrigerant passage, and in the lower portion thereof a third side refrigerant passage. A first partition portion is provided in first lower tank portions of the laminated flat tubes, and a second partition portion is provided in second upper tank portions. The first partition portion and the second partition portion respectively divide the laminated first lower tank portions and the second upper tank portions such that the ratio of the number of flat tubes on the refrigerant inlet/outlet side surface portion side, n , to the number of flat tubes on the opposite side surface portion side, n , is approximately 2:1.

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Aichi, Japan

Yasunobu Joboji