Integrated hybrid heat exchanger using water head difference

1. An integrated hybrid heat exchanger, comprising:

a first radiator and a second radiator disposed in parallel;

a first radiator tank connected to both first end portions of the first and second radiators in common;

a first baffle installed in the first radiator tank and separating an inner space of the first radiator tank into an upper space and a lower space, wherein the upper and lower spaces of the first radiator tank include a coolant inlet respectively so as to fluidly-connect the upper space of the first radiator tank to the first radiator and the coolant inlet installed at the upper space of the first radiator tank and to fluidly-connect the lower space of the first radiator tank to the second radiator and the coolant inlet installed at the lower space of the first radiator tank;

a first air bypass member having a passage therein, the first air bypass member installed on the first baffle and extending upwards with a predetermined length and configured to remove bubbles collected in the lower space of the first radiator tank through the passage of the first air bypass member by pressure difference between the upper and lower spaces of the first radiator tank;

a second radiator tank connected to both second end portions of the first and second radiators in common;

a second baffle installed in the second radiator tank and separating an inner space of the second radiator tank into an upper space and a lower space, wherein the upper and lower spaces of the second radiator tank include a coolant outlet respectively so as to fluidly-connect the upper space of the second radiator tank to the first radiator and the coolant outlet installed at the upper space of the second radiator tank and to fluidly-connect the lower space of the second radiator tank to the second radiator and the coolant outlet installed at the lower space of the second radiator tank; and

a second air bypass member having a passage therein, the second air bypass member installed on the second baffle and extending upwards with a predetermined length and configured to remove bubbles collected in the lower space of the second radiator tank through the passage of the second air bypass member by pressure difference between the upper and lower spaces of the second radiator tank.

2. The integrated hybrid heat exchanger of claim 1 , wherein the first air bypass member is configured to minimize a flow of fluid therethrough while discharging the bubbles when an excess pressure is generated in one of the first and second radiators.

3. The integrated hybrid heat exchanger of claim 1 , wherein the first air bypass member is formed integrally with the first baffle.

4. The integrated hybrid heat exchanger of claim 1 , wherein the first air bypass member passes through the first baffle and an end of the first air bypass member is assembled on the first baffle.

5. The integrated hybrid heat exchanger of claim 1 , wherein the first baffle is disposed at the same level as a bottom portion of the first radiator and the predetermined length of the first air bypass member is shorter than the height of the first radiator from the bottom portion thereof.

6. The integrated hybrid heat exchanger of claim 1 , wherein the upper space of the first radiator tank is fluidly-connected to a reservoir tank.

7. The integrated hybrid heat exchanger of claim 1 , wherein the second air bypass member is configured to minimize a flow of fluid therethrough while discharging the bubbles when an excess pressure is generated in one of the first and second radiators.

8. The integrated hybrid heat exchanger of claim 1 , wherein the second air bypass member is formed integrally with the second baffle.

9. The integrated hybrid heat exchanger of claim 1 , wherein the second air bypass member is assembled on the second baffle in an insertion manner.

10. The integrated hybrid heat exchanger of claim 1 , wherein the second baffle is disposed at the same level as a bottom portion of the second radiator and the predetermined length of the second air bypass member is shorter than the height of the second radiator from the bottom portion thereof.

11. The integrated hybrid heat exchanger of claim 1 , wherein the upper space of the second radiator tank is fluidly-connected to a reservoir tank.

12. The integrated hybrid heat exchanger of claim 11 , wherein the upper space of the first radiator tank is fluidly-connected to the reservoir tank.

13. The integrated hybrid heat exchanger of claim 1 , wherein the coolant outlet of the first radiator is disposed lower than the coolant inlet thereof.

14. The integrated hybrid heat exchanger of claim 1 , wherein the coolant outlet of the second radiator is disposed lower than the coolant inlet thereof.

15. The integrated hybrid heat exchanger of claim 1 , wherein the first radiator is configured to cool an internal combustion engine and the second radiator is configured to cool electrical components.

16. The integrated hybrid heat exchanger of claim 1 , wherein longitudinal axes of the first and second radiators are slanted with a predetermined angle to align the second radiator tank to be higher than the first radiator tank so as to control a flow rate of the bubbles between the first radiator tank and the second radiator tank.

17. A vehicle comprising the integrated hybrid heat exchanger of claim 1 .