Pipe connecting structure of heat exchanger
A pipe connector ( 60 ) configured to be attached to a tubular connecting port ( 63, 64 ) extending from a connector-mounting surface ( 54 ) of a heat exchanger body ( 1 a ) includes a plate-like or block-like shape base ( 65 ), an insert portion ( 61 a, 62 a ) projecting from one side ( 65 F) of the base ( 65 ) facing to the connector-mounting surface and configured to be fit in and connected to the connecting port ( 63, 64 ), and a leg portion ( 70 ) projecting from the one side ( 65 F) and configured to be abut on the connector-mounting surface ( 54 ).
1. A pipe connecting structure of a heat exchanger, the pipe connecting structure comprising:
a heat exchanger body including a connector-mounting plate and a tubular connecting port extending outwardly from a surface of the connector-mounting plate;
a pipe connector configured to be attached to the connecting port;
wherein the connecting port extends toward the pipe connector,
wherein the pipe connector includes:
a plate-shaped or block-shaped base;
an insert portion integrally projecting from one side of the base which faces toward the connector-mounting plate and configured to fit in and connect to the connecting port; and
a leg portion integrally projecting from the one side of the base and contacting the surface of the connector-mounting plate,
wherein an inner circumferential surface of the connecting port is fixed with an outer circumferential surface of the insert portion, and
wherein a projection height of the leg portion from the one side of the base is greater than an extension height of the connecting port from the surface of the connector-mounting plate.
2. The pipe connecting structure according to claim 1 , wherein the leg portion is spaced apart from an outer circumferential surface of the connecting port.
3. The pipe connecting structure according to claim 1 , wherein
the connecting port includes a brazing layer applied on the inner circumferential surface; and
the inner circumferential surface of the connecting port is brazed with the outer circumferential surface of the insertion portion.
4. The pipe connecting structure according to claim 1 , wherein the connecting port is disposed between the leg portion and the insert portion.
5. The pipe connecting structure according to claim 1 , wherein the insert portion monolithic to the base.