Patent ID: 7886811
Filing Date: 2011-02-15
Classification: B23K,F25B,F28D,F28F,Y10T

Abstract:
1. An evaporator comprising: a refrigerant inlet header; a refrigerant outlet header arranged side by side with respect to the refrigerant inlet header in a front-rear directionll and a refrigerant circulating passage holding the refrigerant inlet and refrigerant outlet headers in communication with each other therethrough, wherein the refrigerant inlet header has a refrigerant inlet at one end thereof, the refrigerant outlet header has a refrigerant outlet at one end thereof alongside the refrigerant inlet, the refrigerant inlet permits a refrigerant to flow into the inlet header and to the outlet header through the refrigerant circulating passage so as to be sent out from the refrigerant outlet, the refrigerant inlet header is provided with a cap closing the one end of the refrigerant inlet header and forming the refrigerant inlet, the refrigerant outlet header is provided with a cap closing the one end of the refrigerant outlet header and forming the refrigerant outlet, the caps of the inlet header and the outlet header are joined to a pipe joint member having a refrigerant inlet portion in communication with the refrigerant inlet and a refrigerant outlet portion in communication with the refrigerant outlet, one of the caps and the pipe joint member is provided with a positioning lug which is projecting from a side edge of the one of the caps and the pipe joint member toward other one of the caps and the pipe joint member and which is configured to be fitted with a positioning recess formed in the other one of the caps and the pipe joint member, and the caps and the pipe joint member have flat surfaces to be contact with each other and are brazed such that the positioning lug is engaged with the positioning recess and that the flat surfaces of the caps and the pipe joint member are in contact with each other.