Claims
- 1. Evacuated heat pipe comprising an aluminum pipe;
- a fluid tight coating of nickel provided on the inside of all sides of the pipe, said coating having a thickness of between 10 .mu.m and 15 .mu.m; and
- said pipe is fractionally filled with water as a heat carrier medium.
- 2. Heat pipe as in claim 1, wherein the nickel coating includes 12-15% phosphorous.
- 3. Heat pipe as in claim 1, wherein the nickel is separated electrochemically during a flow-through of a separating fluid through the heating pipe.
- 4. Heat pipe as in claim 1, wherein the nickel coating consists of hard solder material.
- 5. Heat pipe as in claim 1, wherein the pipe includes individual soldered-together parts, said parts having solder joints therebetween, said parts being coated with nickel prior to being soldered together, and said coating extending completely up to into the area of the solder joint.
- 6. Heat pipe as in claim 5, wherein the solder joint has a width area and the coating extends over the entire width of the solde joint.
- 7. Heat pipe as in claim 5, wherein in at least one of the parts of the heat pipe consists completely of a water-resistant metal.
- 8. Heat pipe as in claim 7, wherein said at least one part consists of copper.
- 9. Heat pipe as in claim 5, wherein the coating consists of a hard solder material.
- 10. Heat pipe as in claim 1, further including a multi-layer structure of coating including a copper coating over the coating of nickel.
- 11. An evacuated heat pipe made of aluminum, steel or gray cast iron which is fractionally filled with a liquid heat carrier medium, in which the heat pipe is provided on the inside of all sides thereof with a completely closed, fluid-tight coating of a water-resistant metal and is filled with water as heat carrier medium, wherein said heat pipe includes individual soldered-together parts, having solder joints therebetween, at least one of said parts being coated with the water-resistant metal, said coating substantially covering the area of the solder joint.
- 12. Heat pipe as in claim 11, wherein the coating consists of one of copper, nickel and alloys thereof.
- 13. Heat pipe as in claim 11, wherein the coating consists of a hard solder material.
- 14. Heat pipe as in claim 11, wherein the solder joint has a width area and the coating extends over the entire width of the solder joint.
- 15. Heat pipe as in claim 11, wherein in at least one of the parts of the heat pipe consists completely of water-resistant metal.
- 16. Heat pipe as in claim 15, wherein said at least one part consists of copper.
- 17. A heat pipe comprising a pipe which is evacuated and fractionally filled with a liquid heat carrier medium, wherein the heat pipe consists of gray cast iron and is provided inside on all sides thereof with a completely closed fluid-tight metallic coating.
- 18. A heat pipe according to claim 17, wherein the coating consists of copper, nickel or alloys thereof.
- 19. Process for making evacuated heat pipe comprising:
- applying a fluid tight coating of nickel to the inside of all sides of an aluminum pipe, said coating having a thickness of between 10 .mu.m and 15 .mu.m; and
- functionally filling said coated pipe with water as a heat carrier medium.
- 20. Process as in claim 18, wherein the nickel coating includes 12-15% phosphorous in said nickel.
- 21. Process as in claim 19, wherein the nickel is separated electrochemically during a flow-through of a separating fluid through the heating pipe.
- 22. Process as in claim 19, wherein the coating includes hard solder material.
- 23. Process as in claim 19, wherein the coating application includes pipes having individual soldered-together parts, said parts having solder joints therebetween, said parts being coated with nickel prior to being soldered together, and said coating extending completely up to into the area of the solder joint.
- 24. Process for making evacuated heat pipe comprising:
- applying a fluid tight coating of water-resistent metal to the inside surface of a pipe made of one of the following aluminum, steel and gray cast iron, wherein said heat pipe includes individual soldered-together parts, having solder joints therebetween, at least one of the said parts being coated with the water-resistant metal, said coating substantially covering the area of the solder joint; and
- fractionally filling said coated pipe with water as a heat carrier medium.
- 25. Process as in claim 24, wherein said coating applying includes a coating of one of the following: copper, nickel and alloys thereof.
Priority Claims (1)
Number |
Date |
Country |
Kind |
3433984 |
Sep 1984 |
DEX |
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BACKGROUND AND SUMMARY OF THE INVENTION
This is a continuation-in-part of Ser. No. 773,867, filed Sept. 9, 1985, now abandoned.
Foreign Referenced Citations (5)
Number |
Date |
Country |
3223496 |
Jul 1983 |
DEX |
16952 |
Feb 1978 |
JPX |
109650 |
Aug 1979 |
JPX |
74492 |
Apr 1984 |
JPX |
191191 |
Sep 1985 |
JPX |
Non-Patent Literature Citations (1)
Entry |
P. Dunn et al., "Heat Pipes", 2nd Ed., Pergamom Press, G.B., 1978, pp. 113-126. |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
773867 |
Sep 1985 |
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