heat exchanger

Abstract

To provide a heat exchanger with low pressure loss. [Solution] The heat exchanger 1 comprises an inner portion 10 extending along the axial direction, an outer portion 20 located radially outside the inner portion 10, and a plurality of intermediate portions 30 connecting the inner portion 10 and the outer portion 20. A distribution chamber P connected to a first supply portion 5 is formed radially inside the inner portion 10. A plurality of inlet openings 12 connected to the distribution chamber P are formed on the wall surface of the inner portion 10, arranged in the circumferential direction. An annular flow path 21 extending along the circumferential direction and connected to a first discharge portion 6 is formed inside the outer portion 20. A plurality of outlet openings 22 connected to the annular flow path 21 are formed on the wall surface of the outer portion 20, arranged in the circumferential direction. A spiral flow path 31 extending spirally from the inlet opening 12 to the outlet opening 22 is formed inside the intermediate portion 30. A first connecting flow path 40 connecting a second supply portion 7 and a second discharge portion 8 in the axial direction is formed between adjacent intermediate portions 30.

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