A heat exchanger has a core case, at least one fin case disposed in the core case, and pair of upper and lower fins disposed in the fin case. The fin case has an inlet part, an outlet part, and a middle part disposed between the inlet and outlet parts. Each of the upper and lower fins has top and bo
A heat exchanger has a core case, at least one fin case disposed in the core case, and pair of upper and lower fins disposed in the fin case. The fin case has an inlet part, an outlet part, and a middle part disposed between the inlet and outlet parts. Each of the upper and lower fins has top and bottom portions. The upper and lower fins are disposed within the fin case so that the upper and lower fins are not in contact with each other at the inlet and outlet parts of the fin case and so that the bottom portions of the upper fin are in contact with respective ones of the top portions of the lower fin at the middle part of the fin case.
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1. A heat exchanger comprising: a core case;a plurality of fin cases disposed in side-by-side relation to each other within the core case, each of the fin cases having an inlet and an outlet and a length extending from the inlet to the outlet, and the fin cases being arranged such that a first heat
1. A heat exchanger comprising: a core case;a plurality of fin cases disposed in side-by-side relation to each other within the core case, each of the fin cases having an inlet and an outlet and a length extending from the inlet to the outlet, and the fin cases being arranged such that a first heat medium flows inside each of the fin cases and a second heat medium flows outside each of the fin cases for heat transfer between the first heat medium and the second heat medium; anda pair of upper and lower fins disposed within each of the fin cases, the upper and lower fins each having a cross-section of corrugated shape, each lower fin being disposed on a floor of the corresponding fin case, each upper fin being disposed on the corresponding lower fin;wherein each upper fin includes: top portions joined to the corresponding fin case, each top portion having one end and an opposite end;bottom portions having respective first centerlines, each bottom portion having one end and an opposite end;rising portions each extending from the one end of each of the bottom portions to the one end of each of the top portions; andfalling portions each extending from the opposite end of each of the top portions to the opposite end of each of the bottom portions;wherein each lower fin includes:top portions having respective second centerlines, each top portion having one end and an opposite end;bottom portions joined to the corresponding fin case, each bottom portion having one end and an opposite end;rising portions each extending from the one end of each of the bottom portions to the one end of each of the top portions; andfalling portions each extending from the opposite end of each of the top portions to the opposite end of each of the bottom portions; andwherein for each of the fin cases, the upper fin and the lower fin are oriented differently from each other such that the first centerlines intersect the second centerlines only at one location corresponding to the middle of the length of the fin case. 2. The heat exchanger of claim 1, wherein each of the fin cases includes upper and lower case halves joined to each other, the upper fin being joined to the upper case half, and the lower fin being joined to the lower case half. 3. The heat exchanger of claim 1, wherein for each of the fin cases, adjacent ones of the first centerlines are located with one of the second centerlines being interposed between two adjacent ones of the first centerlines at each of the inlet and the outlet. 4. The heat exchanger of claim 1, wherein for each of the fin cases, the bottom portions, the rising portions or the falling portions of the upper fin have communicating holes formed therethrough; and wherein for each of the fin cases, the top portions, the rising portions, or the falling portions of the lower fin have communicating holes formed therethrough. 5. A heat exchanger comprising: a core case;a plurality of fin cases disposed in side-by-side relation to each other within the core case, each of the fin cases having an inlet and an outlet and a length extending from the inlet to the outlet, and the fin cases being arranged such that a first heat medium flows inside each of the fin cases and a second het medium flows outside each of the fin cases for heat transfer between the first heat medium and the second heat medium; anda pair of upper and lower fins disposed within each of the fin cases, the upper and lower fins each having a cross-section of corrugated shape, each lower fin being disposed on a floor of the corresponding fin case, each upper fin being disposed on the corresponding lower fin;wherein the upper fin includes: top portions joined to the corresponding fin case, each top portion having one end and an opposite end;bottom portions each having one end and an opposite end;rising portions each extending from the one end of each of the bottom portions to the one end of each of the top portions; andfalling portions each extending from the opposite end of each of the top portions to the opposite end of each of the bottom portions;wherein the lower fin includes: top portions each having one end and an opposite end;bottom portions joined to the corresponding fin case, the bottom portions each having one end and an opposite end;rising portions each extending from the one of each of the bottom portions to the one end of each of the top portions; andfalling portions each extending from the opposite end of each of the top portions to the opposite end of each of the bottom portions;wherein for each of the fin cases, the upper fin has a pitch different from a pitch of the lower fin; andwherein for each of the fin cases, the top portions of the lower fin have contact portions in contact with the bottom portions of the upper fin only at one location corresponding to the middle of the length of the fin case. 6. The heat exchanger of claim 5, wherein for each of the fin cases, the bottom portions, the rising portions or the falling portions of the upper fin have communicating holes formed therethrough; and wherein for each of the fin cases, the top portions, the rising portions, or the falling portions of the lower fin have communicating holes formed therethrough. 7. The heat exchanger according to claim 1, wherein at each of the inlet and outlet of each of the fin cases, the top portions of the lower fin and bottom portions of the upper fin are arranged alternately with one another; and wherein at the middle part of the length of each of the fin cases, the bottom portions of the upper fin are in contact with respective ones of the top portions of the lower fin. 8. The heat exchanger according to claim 1, wherein for each of the fin cases, the upper and lower fins are in contact with each other at locations where the first centerlines intersect the second centerlines. 9. The heat exchanger according to claim 1, wherein for each of the fin cases, the upper and lower fins are in contact with each other at the middle part of the length of the fin case and are not in contact with each other at each of the inlet and outlet of the fin case. 10. The heat exchanger according to claim 1, wherein for each of the fin cases, the first and second centerlines intersect a longitudinal axis of the fin case. 11. The heat exchanger according to claim 1, wherein for each of the fin cases, the upper fin is disposed so that the first centerlines intersect a longitudinal axis of the fin case and the lower fin is disposed so that the second centerlines are parallel to the longitudinal axis of the fin case. 12. The heat exchanger according to claim 5, wherein at each of the inlet and outlet of each of the fin cases, the top portions of the lower fin and bottom portions of the upper fin are arranged alternately with one another. 13. The heat exchanger according to claim 5, wherein for each of the fin cases, the upper and lower fins are not in contact with each other at each of the inlet and outlet of the fin case. 14. A heat exchanger comprising: a core case;at least one fin case disposed in the core case, the at least one fin case having an inlet part, an outlet part, and a middle part disposed between the inlet and outlet parts; anda pair of upper and lower fins each having top and bottom portions, the upper and lower fins being disposed within the at least one fin case so that the upper and lower fins are not in contact with each other at the inlet and outlet parts of the at least one fin case and so that the bottom portions of the upper fin are in contact with respective ones of the top portions of the lower fin at the middle part of the at least one fin case;wherein the bottom portions of the upper fin have respective first centerlines and the top portions of the lower fin have respective second centerlines; andwherein the upper and lower fins are oriented relative one another so that the first centerlines intersect the second centerlines only at one location corresponding to the middle of the length of the at least one fin case. 15. The heat exchanger according to claim 14, wherein each of the bottom portions of the upper fins and the top portions of the lower fin have communicating holes formed therethrough. 16. The heat exchanger according to claim 14, wherein the at least one fin case includes upper and lower case halves joined to each other, the upper fin being joined to the upper case half and the lower fin being joined to the lower case half.
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이 특허에 인용된 특허 (8)
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