Heat exchanger and manufacturing method thereof

Abstract

To provide a heat exchanger capable of allowing two fluids of a first fluid and a second fluid to exchange heat with a third fluid by one heat exchanger.SOLUTION: A heat exchanger 1 includes: a first flow channel 10 surrounded by a first flow channel wall 11; a second flow channel 20 surrounded by a second flow channel wall 21 formed separately from the first flow channel wall 11; and a third flow channel 30 formed by a space between the first flow channel wall 11 and the second flow channel wall 21. A first fluid flows in the first flow channel 10, a second fluid flows in the second flow channel 20, and a third fluid flows in the third flow channel 30. The heat exchanger 1 exchanges heat between the first fluid flowing in the first flow channel 10 and the third fluid flowing in the third flow channel 30 and between the second fluid flowing in the second flow channel 20 and the third fluid flowing in the third flow channel 30, and the first flow channel wall 11 and the second flow channel wall 21 are formed into a shape in which the first flow channel 10 and the second flow channel 20 are three-dimensionally complicated.SELECTED DRAWING: Figure 1