Patent ID: 9109820
Filing Date: 2015-08-18
Classification: F25B,F28D,F28F

Abstract:
1. A heat exchange device comprising a heat exchanger having a plurality of heat transfer tubes through which a refrigerant is circulated and functioning as an evaporator; a plurality of communication tubes connected to ends of the heat transfer tubes on the refrigerant discharge side; and a header connected to ends of the plurality of communication tubes on the refrigerant discharge side, the header for joining the refrigerant discharged from the communication tubes, wherein at least a part of the plurality of communication tubes includes a flow passage enlargement communication tube formed in such a manner that a flow passage sectional area on the side of the header is larger than a flow passage sectional area on the side of the heat transfer tubes, wherein the flow passage enlargement communication tube includes a plurality of branch tubes connected to the heat transfer tubes, and a joining tube connected to the side of the header, the joining tube for joining the refrigerant flowing through the plurality of branch tubes, and a flow passage sectional area of the joining tube is larger than the sum of flow passage sectional areas of the plurality of branch tubes.