PULSATING MULTI-PIPE HEAT PIPE

• US 20150060019A1
• Filed: 11/19/2013
• Published: 03/05/2015
• Est. Priority Date: 09/02/2013
• Status: Abandoned Application

• Current Assignee: Industrial Technology Research Institute
• Original Assignee: Industrial Technology Research Institute
• Inventors: TSENG, CHIH-YUNG
• Application Number:
  US14/083,766
• Publication Number:
  US 20150060019A1
• Time in Patent Office: Days
• US Class Current: 165/104.25
• CPC Class Codes: F28D 15/025 having non-capillary condensate return means
• CPC Class Codes: F28D 15/0266 with separate evaporating and condensing chambers connected by at least one conduit; Loop-type heat pipes; with multiple or common evaporating or condensing chambers F28D15/043 takes precedence
• CPC Class Codes: F28F 9/26 Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators connecting different sections in water heaters F24H9/14 , connecting headers with inlet or outlet fittings F28F9/0246

Abstract

A pulsating multi-pipe heat pipe having its metal pipes arranged in-parallel and bent in snake-shaped loop, is capable of making the working fluid flow through the pulsating multi-pipe heat pipe, enhance the pressure difference therein so as to improve its heat-dissipating effect and successfully overcome the problems of horizontal action when the heat pipe is laid in horizontal position. This is done by attaching at least a chambered connector in the metal pipes having their cross-sectional areas greater than the total cross-sectional areas of the metal pipes or furnishing at least a pair of communicative penetrating holes at the side-by-side adjacent pipe walls making the working fluid create cross-flow within the pulsating multi-pipe heat pipe.

Claims

1. A pulsating multi-pipe heat pipe, comprising:

at least two metal pipes having a plurality of snake-shaped bent loops at a first end thereof, while the other end is a second end, and the two metal pipes are in-parallel, and having a working fluid that is filled thereof; and

at least a chambered connector to be connected to both ends of each of the at least two metal pipes.

2. The pulsating multi-pipe heat pipe in claim 1, wherein the diameters of the at least two metal pipes are equal.

3. The pulsating multi-pipe heat pipe in claim 1, wherein the diameters of the at least two metal pipes are unequal.

4. The pulsating multi-pipe heat pipe in claim 1, wherein the dimension of the diameter of the metal pipes is in the range of 0.1˜

8.0 mm.

5. The pulsating multi-pipe heat pipe in claim 1, wherein both the dimensions of the width and height of the chambered connector are in the range of 2 D˜

10 D while the length of which is in the range of 2 D˜

20 D where D being the diameter of the heat pipe.

6. The pulsating multi-pipe heat pipe in claim 1, wherein the pulsating multi-pipe heat pipe is capable of being operated either in horizontal and or in negative 90°

positions when the heat pipe is filled with working fluid and is subjected to heat.

7. The pulsating multi-pipe heat pipe in claim 1, wherein the filling rate of the working fluid is in a range of 30˜

80% (volumetric ratio).

8. The pulsating multi-pipe heat pipe in claim 1, wherein a heat-absorbing end is at the first end and a heat-dissipating end is at the second end.

9. A pulsating multi-pipe heat pipe, comprising:

a combined pulsating multi-pipe heat pipe having their second ends connected each other at the center part and their other two ends at the third and fourth ends, each of the combined pulsating multi-pipe heat pipes being a single pipe has a plurality of snake-shaped bent loops at the third and the four end respectively and having a working fluid that is filled thereof; and

at least a chambered connector to be connected at both ends of the metal pipes and at the center part of the combined pulsating multi-pipe heat pipe, to be a common chambered connector.

10. The pulsating multi-pipe heat pipe in claim 9, wherein the diameters of the at least two metal pipes are equal.

11. The pulsating multi-pipe heat pipe in claim 9, wherein the diameters of the at least two metal pipes are unequal.

12. The pulsating multi-pipe heat pipe in claim 9, wherein the dimension of the diameter of the metal pipes is in the range of 0.1˜

8.0 mm.

13. The pulsating multi-pipe heat pipe in claim 9, wherein both the dimensions of the width and height of the chambered connector are in the range of 2 D˜

10 D while the length of which is in the range of 2 D˜

20 D where D being the diameter of the heat pipe.

14. The pulsating multi-pipe heat pipe in claim 9, wherein the pulsating multi-pipe heat pipe is capable of being operated either in horizontal and or in negative 90°

positions when the heat pipe is filled with working fluid and is subjected to heat.

15. The pulsating multi-pipe heat pipe in claim 9, wherein the filling rate of the working fluid is in a range of 30˜

80% (volumetric ratio).

16. The pulsating multi-pipe heat pipe in claim 9, wherein the center part is a heat-absorbing end while the third end and the fourth end thereof is a heat-dissipating end.

17. A pulsating multi-pipe heat pipe, comprising:

at least two metal pipes having a plurality of snake-shaped bent loops at a first end thereof and having a working fluid that is filled thereof; and

two penetration holes being adjacent and face-to-face are drilled respectively at the metal pipes at a second end and soldered between them to form a passage to make the two metal pipes communicate each other.

18. The pulsating multi-pipe heat pipe in claim 17, wherein the diameters of the at least two metal pipes are equal.

19. The pulsating multi-pipe heat pipe in claim 17, wherein the diameters of the at least two metal pipes are unequal.

20. The pulsating multi-pipe heat pipe in claim 17, wherein the dimension of the diameter of the metal pipes is in the range of 0.1˜

8.0 mm.

21. The pulsating multi-pipe heat pipe in claim 17, wherein the length of the penetration holes is in the range of 2 D˜

20 D where D being the diameter of the heat pipe.

22. The pulsating multi-pipe heat pipe in claim 17, wherein the pulsating multi-pipe heat pipe is capable of being operated either in horizontal and or in negative 90°

positions when the heat pipe is filled with working fluid and is subjected to heat.

23. The pulsating multi-pipe heat pipe in claim 17, wherein the filling rate of the working fluid is in a range of 30˜

80%.

24. The pulsating multi-pipe heat pipe in claim 17, wherein the first end of the at least two metal pipes having a plurality of snake-shaped heat pipes is a heat-absorbing end while the second end thereof is a heat-dissipating end.