Claims
- 1. A method of manufacturing a heat exchanger; said heat exchanger including pipe means for directing a first fluid to flow therethrough, said pipe means including at least one flat tube member across an exterior of which a second fluid flows laterally; and
- dispersing means for dispersing the flow of the first fluid, as the first fluid flows through said pipe means;
- comprising the steps of:
- forming a cylindrical tube member having a plurality of projected stripes on an inner surface thereof, said cylindrical tube member having a longitudinal axis, such that said projected stripes extend along said cylindrical tube member diagonally to said longitudinal axis; and
- pressing said cylindrical tube member, so that said cylindrical tube member forms a flat tube member with a lower inner surface from which first portions of said projected stripes project and an upper inner surface from which second portions of said projected stripes project, said first and second portions of the projected stripes intersecting one another, and said first and second portions of the projected stripes contacting one another at the intersections therebetween.
- 2. The method of claim 1, wherein an angle of each of the projected stripes with respect to a plane which includes the longitudinal axis of said cylindrical tube member is selected from within a range of about 5 to 45 degrees.
- 3. The method of claim 2, wherein said angle is selected from within a range of about 5 to 30 degrees.
- 4. The method of claim 2, wherein said angle is selected from within a range of about 10 to 20 degrees.
- 5. The method of claim 1, wherein said step of forming a cylindrical tube member comprises the steps of:
- forming said plurality of projected stripes on one surface of a plate member having a longitudinal axis, such that said projected stripes extend longitudinally along said plate member;
- forming a rectangular plate member having a longitudinal axis and two longitudinal edges from said plate member, such that said projecting stripes are diagonal to the longitudinal axis of said rectangular plate member;
- curling said rectangular plate member to form said cylindrical tube member with a longitudinal axis parallel to said longitudinal axis of said rectangular plate member; and
- securing said edges of said rectangular plate member to each other so as to seal said cylindrical tube member.
- 6. The method of claim 5 wherein an angle of each of the projected stripes with respect to the longitudinal axis of said rectangular plate member is selected from within a range of about 5 to 45 degrees.
- 7. The method of claim 6, wherein said angle is selected from within a range of about 5 to 30 degrees.
- 8. The method of claim 6, wherein said angle is selected from within a range of about 10 to 20 degrees.
- 9. The method of claim 1, wherein the step of forming a cylindrical tube member comprises the step of forming a substantially circular tube member.
- 10. The method of claim 1, wherein the step of forming a cylindrical tube member comprises the steps of:
- providing a cylindrical tube member having a longitudinal axis;
- forming said plurality of projected stripes on an inner peripheral surface of said cylindrical tube member, such that said projected stripes extend along said cylindrical tube member diagonally to said longitudinal axis.
Priority Claims (1)
Number |
Date |
Country |
Kind |
5-346144 |
Dec 1993 |
JPX |
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Parent Case Info
This application is a continuation of application Ser. No. 08/361,301, filed Dec. 21, 1994 entitled "HEAT EXCHANGER", now U.S. Pat. No. 5,586,598.
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Continuations (1)
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Number |
Date |
Country |
Parent |
361301 |
Dec 1994 |
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