Abstract: An evaporator 1 includes a refrigerant inlet header section 5 and a refrigerant outlet header section 6 which are arranged in the front-rear direction, a refrigerant circulation passage for establishing fluid communication between the header sections 5 and 6. First ends of the header sections 5 and 6 are closed with a first cap 19 and the second ends thereof are closed with a second cap 18. A refrigerant inlet 37 and a refrigerant outlet are formed in the first cap 19. A pipe joint member 21, having a refrigerant inflow port 45 communicating with the refrigerant inlet 37 and a refrigerant outflow port 46 communicating with the refrigerant outlet 38, is joined to the first cap 19. Mating concave portions 19a and 19b are formed on the first cap 19. Mating convex portions 21a and 21b which project toward the first cap 19 and which are to be fitted into the mating concave portions 19a and 19b, respectively, are formed on the pipe joint member 21.

Abstract: An evaporator 1 includes a refrigerant inlet header section 5 and a refrigerant outlet header section 6 which are arranged in the front-rear direction, a refrigerant circulation passage for establishing fluid communication between the header sections 5 and 6. First ends of the header sections 5 and 6 are closed with a first cap 19 and the second ends thereof are closed with a second cap 18. A refrigerant inlet 37 and a refrigerant outlet are formed in the first cap 19. A pipe joint member 21, having a refrigerant inflow port 45 communicating with the refrigerant inlet 37 and a refrigerant outflow port 46 communicating with the refrigerant outlet 38, is joined to the first cap 19. Mating concave portions 19a and 19b are formed on the first cap 19. Mating convex portions 21a and 21b which project toward the first cap 19 and which are to be fitted into the mating concave portions 19a and 19b, respectively, are formed on the pipe joint member 21.

Abstract: A heat exchanger employed as an evaporator includes a heat exchange core section and first to fourth headers 5, 6, 9, 11. The headers 5, 6 include hollow header bodies 10, 20 having opposite ends opened, and caps 18a, 18b, 19a, 19b fixed to the corresponding opposite end openings. The caps 18a, 18b have flat wall portions 32a, 33a, 34a which close the corresponding end openings of the header bodies 10, 20. A reinforcement projection portion 30 projecting toward the interior of the header 5 is formed on the flat wall portion 32a of the cap 18a. In the heat exchanger, the header 5 exhibits enhanced withstand pressure.

Abstract: A heat exchanger employed as an evaporator includes a heat exchange core section and first to fourth headers 5, 6, 9, 11. The headers 5, 6 include hollow header bodies 10, 20 having opposite ends opened, and caps 18a, 18b, 19a, 19b fixed to the corresponding opposite end openings. The caps 18a, 18b have flat wall portions 32a, 33a, 34a which close the corresponding end openings of the header bodies 10, 20. A reinforcement projection portion 30 projecting toward the interior of the header 5 is formed on the flat wall portion 32a of the cap 18a. In the heat exchanger, the header 5 exhibits enhanced withstand pressure.