NETWORK-TYPE HEAT PIPE DEVICE

• US 20010023757A1
• Filed: 08/20/1998
• Published: 09/27/2001
• Est. Priority Date: 08/22/1997
• Status: Active Grant

• Current Assignee: HUANG, BIN-JUINE
• Original Assignee: HUANG, BIN-JUINE
• Inventors: HUANG, BIN-JUINE
• Granted Patent: US 6,269,865 B1
• Time in Patent Office: Days
• US Class Current: 165/104.26
• 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: F28D 15/043 forming loops, e.g. capillary pumped loops
• CPC Class Codes: F28F 2210/02 with particular branching, e.g. fractal conduit arrangements

Abstract

A network-type heat pipe device is disclosed, wherein the network-type heat pipe device comprises a heat dissipating unit with a network shape, a heat absorbing unit of any desired shape, and two single flexible capillary pipes connecting the heat absorbing unit with the heat dissipating unit. The working fluid filled in the heat pipe is of a predetermined quantity smaller than the internal volume of the heat pipe. The inside diameters of the capillary pipes of the network-shaped heat dissipating unit and the connecting capillary pipes are small enough such that the vapor and liquid segments of the working fluid may distribute therein by capillary effect. As the heat absorbing unit is heated, the mutual actions of the pushing or compression force generated due to the vaporization at the heat absorbing unit, the resisting force generated due to the vapor condensation at the heat dissipating unit, and the gravitational force generated due to the liquid segments in the vertical part of the capillary pipes in the heat dissipating unit and the connecting pipes cause a circulating flow for the working fluid to carry heat from the heat absorbing unit to the heat dissipating unit. The heat absorbing unit can be placed under the heat dissipating unit so as to enhance the gravitational force for circulating the working fluid in the single direction in the flow passage and to increase the heat transport from the heat absorbing unit to the heat dissipating unit.

Claims

1. A heat pipe device used in heat transport, comprising:

(a) a heat absorbing unit inside of which is a space of any shape for storing working fluid;

the heat absorbing unit being used to absorb heat from a heat source;

(b) a heat dissipating unit formed by network-shape capillary pipes for releasing the heat transported from the heat absorbing unit to a heat sink;

(c) two connecting capillary pipes having a single tube shape and being made from an extensible metal or nonmetal material for connecting to each end of heat absorbing unit and heat dissipating unit so as to form a closed loop;

(d) a condensable working fluid filled in the heat absorbing unit, the heat dissipating unit, and the connecting capillary pipes, wherein the quantity of the filled liquid is smaller than the total volume of the inner spaces of the heat absorbing unit, the heat dissipating unit and the connecting capillary pipes.

2. The heat pipe device as claimed in

claim 1

, wherein the inner spaces of the heat absorbing unit the heat dissipating unit, and the connecting capillary pipe are linked so that the condensable working fluid is sealed within and may flow within.

3. The heat pipe device as claimed in

claim 2

, wherein the inside diameters of the capillary pipes of the network-shape heat dissipating unit and the connecting capillary pipes are small enough such that the vapor and liquid segments of the working fluid may distribute herein by capillary effect, wherein as the heat absorbing unit is heated, the mutual actions of the pushing or compression force generated due to the vaporization at the heat absorbing unit, the resisting force generated due to the vapor condensation at the heat dissipating unit, and the gravitational force generated due to the liquid segments in the vertical part of the capillary pipes in the heat dissipating unit and the connecting pipes cause a circulating flow for the working fluid to carry heat from the heat absorbing unit to the heat dissipating unit.

4. The heat pipe device as claimed in

claim 3

, wherein the heat absorbing unit is installed under the heat dissipating unit so as to enhance the gravitational force for circulating the working fluid in a single direction in the flow passage and to increase the heat transport from the heat absorbing unit to the heat dissipating unit.

5. The heat pipe device as claimed in claims 3 or 4, wherein the heat dissipating unit is made of network-shape capillary pipes having at least two parallel rows of capillary pipes the inner part of which are connected with each other.

6. The heat pipe device claimed in claims 3 or 4, wherein the network-shape capillary pipes in the heat dissipating unit is adhered on a plate for enhancing the heat transfer to the heat sink.

7. The heat pipe device as claimed in claims 3 or 4, wherein the heat dissipating unit is made of network-shape capillary pipes having at least two parallel rows of capillary pipes, the inner part of which are connected with each other, and the network-shape capillary pipes are adhered on a plate for enhancing the heat transfer to the heat sink.

8. The heat pipe device as claimed in claims 3 or 4, wherein the heat absorbing unit may be made as a flat-box shape and includes an inlet port, an outlet port, an evaporating chamber, characterized in that:

The heat absorbing unit may be designed with upper and a lower halves, that are then joined together as a whole body;

The inlet port for the working fluid is installed on the lower half for receiving the liquid working fluid flowing into the evaporating chamber;

The outlet port is installed on the upper half for guiding the vapor to flow out of the evaporating chamber.

9. A heat pipe device used in heat transport, comprising:

(a) a heat absorbing unit formed by network-shape capillary pipes for absorbing heat from a heat source;

(b) a heat dissipating unit inside which has a space of any shape for storing working fluid, the heat dissipating unit being used to dissipate the heat to a heat sink;

(c) two connecting capillary pipes having a single tube shape and having an extensible metal or nonmetal material for connecting heat absorbing unit and heat dissipating unit so as to form a closed loop;

(d) a condensable working fluid filled in the heat absorbing unit, the heat dissipating unit, and the inner space of the connecting capillary pipes, wherein the quantity of filled liquid is smaller than the total volume of the inner space of the heat absorbing unit, the heat dissipating unit and the connecting capillary pipes.

10. The heat pipe device as claimed in

claim 9

, wherein the inner spaces of the heat absorbing unit, the heat dissipating unit, and the connecting capillary pipe are linked so that the condensable working fluid is sealed within and may flow within.

11. The heat pipe device as claimed in

claim 10

, wherein the inside diameters of the network-shape capillary pipes of the heat absorbing unit and the connecting capillary pipe are small enough so that the vapor and liquid of the working fluid may distribute therein by capillary effect.

12. The heat pipe device as claimed in

claim 11

, wherein the heat absorbing unit is installed under the heat dissipating unit so as to enhance the gravitational force for circulating the working fluid in the single direction in the flow passage and to increase the heat transport from the heat absorbing unit to the heat dissipating unit.

13. The heat pipe device as claimed in claims 11 or 12, wherein the heat absorbing unit is made of at least two parallel rows of capillary pipes the inner part of which are connected with each other.

14. The heat pipe device as claimed in claims 11 or 12, wherein the network-shape capillary pipes in the heat absorbing unit are adhered on a plate for enhancing the heat dissipation to the heat sink.

15. The heat pipe device as claimed in claims 11 or 12, wherein the heat absorbing unit is made of at least two parallel rows of capillary pipes the inner part of which are connected with each other, and the network-shape capillary pipes are adhered on a plate for enhancing the heat dissipation to the heat sink.

16. A heat pipe device used in heat transport, comprising:

(a) a heat absorbing unit made of network-shape capillary pipes, the heat absorbing unit being used to absorb heat from a heat source;

(b) a heat dissipating unit made of network-shape capillary pipes for releasing heat to a heat sink;

(c) two connecting capillary pipes having a single tube shape and having an extensible metal or nonmetal material for connecting heat absorbing unit and heat dissipating unit so as to form a closed loop;

(d) a condensable working fluid filled within the heat absorbing unit, the heat dissipating unit, and the inner space of the connecting capillary pipes, wherein the quantity of filled liquid is smaller man the total volume of the inner spaces of the heat absorbing unit, the heat dissipating unit and the connecting capillary pipe.

17. The heat pipe device as claimed in

claim 16

, wherein the inner spaces of the heat absorbing unit, the heat dissipating unit, and the connecting capillary pipe are linked so the condensable working fluid is sealed within and may flow within.

18. The heat pipe device as claimed in

claim 17

, wherein the inside diameters of the network-shape capillary pipes in the heat dissipating unit and the heat absorbing unit and the connecting capillary pipes are small enough such that the vapor and liquid segments of the working fluid may distribute therein by capillary effect, so that as the heat absorbing unit is heated, the mutual actions of the pushing or compression force generated due to the vaporization at the heat absorbing unit, the resisting force generated due to the vapor condensation at the heat dissipating unit, and the gravitational force generated due to the liquid segments in the vertical part of the capillary pipes in the heat dissipating unit and the connecting pipes cause a circulating flow for the working fluid to carry heat from the heat absorbing unit to the heat dissipating unit.

19. The heat pipe device as claimed in

claim 18

, wherein the heat absorbing unit is installed under the heat dissipating unit so as to enhance the gravitational force for circulating the working fluid in the single direction in the flow passage and to increase the heat transport from the heat absorbing unit to the heat dissipating unit.

20. The heat pipe device as claimed in claims 18 or 19, wherein the heat dissipating unit and the heat absorbing unit are made of at least two parallel rows of capillary pipes the inner part of which are connected with each other.

21. The heat pipe device as claimed in claims 18 or 19, wherein the network-shaped capillary pipes in the heat dissipating unit and the heat absorbing unit are adhered on a plate for enhancing the heat dissipation to the heat sink.

22. The heat pipe device as claimed in claims 18 or 19, wherein the heat dissipating unit and the heat absorbing unit are made of at least two parallel rows of capillary pipes, the inner part of which are connected with each other, and the network-shape capillary pipes is adhered on a plate for enhancing the heat dissipation to the heat sink.