|
(11) | EP 2 735 836 A3 |
(12) | EUROPEAN PATENT APPLICATION |
|
|
|
|
|||||||||||||||||||||||
(54) | Heat exchanger |
(57) There is provided a heat exchanger (1) which can alleviate the effects of stress
due to thermal elongation of branch pipes with a more compact structure. The heat
exchanger (1) includes: a heat exchange unit (2) which exchanges heat between a refrigerant
flowing through an inside thereof and an external fluid; a plurality of hairpin tubes
(3) which is installed at an end of the heat exchange unit (2) and serves as an outlet
or an inlet of the refrigerant flowing through the inside of the heat exchange unit
(2); a plurality of connecting pipes (4) which has one ends thereof connected to the
plurality of hairpin tubes (3), respectively; and a header pipe (5) to which the other
ends of the plurality of connecting pipes (4) are connected. Each of the plurality
of connecting pipes (4) includes a detour section which is bent such that a pipe length
becomes longer than a linear distance between the hairpin tube (3) and the header
pipe (5).
|