Abstract: A composite wick structure of a heat pipe which is applied with a tube circumferential surface contacted to a heat source includes a plurality of grooves and a sintered-powder layer. The circular grooves are formed on the internal sidewall of the tubular member. The sintered-powder layer filled in the grooves is attached to at least a portion of the internal sidewall of the tubular member. By the better capillary force provided by the sintered powder, the liquid-phase working fluid can reflow to the bottom side of the heat pipe quickly to enhance the heat transmission efficiency. Further, the problem caused by usage of an axial rod during the process of applying sintered powder can be resolved.

Abstract: A composite wick structure of a heat pipe which is applied with a tube circumferential surface contacted to a heat source includes a plurality of grooves and a sintered-powder layer. The grooves are longitudinally formed on the internal sidewall of the tubular member. The sintered-powder layer filled in the grooves is attached to at least a portion of the internal sidewall of the tubular member. By the better capillary force provided by the sintered powder, the liquid-phase working fluid can reflow to the bottom side of the heat pipe quickly to enhance the heat transmission efficiency. Further, the problem caused by usage of an axial rod during the process of applying sintered powder can be resolved.

Abstract: A composite wick structure of a heat pipe which is applied with a tube circumferential surface contacted to a heat source includes a plurality of grooves and a sintered-powder layer. The grooves are longitudinally formed on the internal sidewall of the tubular member. The sintered-powder layer filled in the grooves is attached to at least a portion of the internal sidewall of the tubular member. By the better capillary force provided by the sintered powder, the liquid-phase working fluid can reflow to the bottom side of the heat pipe quickly to enhance the heat transmission efficiency. Further, the problem caused by usage of an axial rod during the process of applying sintered powder can be resolved.

Abstract: A composite wick structure of a heat pipe which is applied with a tube circumferential surface contacted to a heat source includes a plurality of grooves and a sintered-powder layer. The circular grooves are formed on the internal sidewall of the tubular member. The sintered-powder layer filled in the grooves is attached to at least a portion of the internal sidewall of the tubular member. By the better capillary force provided by the sintered powder, the liquid-phase working fluid can reflow to the bottom side of the heat pipe quickly to enhance the heat transmission efficiency. Further, the problem caused by usage of an axial rod during the process of applying sintered powder can be resolved.

Abstract: An end surface structure of a heat pipe having a large gauge used to be contacted with a heat source for dissipation is provided. The heat pipe includes a pipe member, a lid, a base and a wick structure. The hollow tubular pipe member has two opposing open ends. The lid is closely covered on one open end. The base provides an interlocking member including a flange fitly embracing the pipe member to receive the other open end of the pipe member thereinside. The wick structure is attached on an inner wall of the pipe member and an inside surface of the base. Moreover, the thickness of the flange is not larger than the thickness of pipe member at the open end received in the interlocking member. When the base is fitted with the pipe member at the open end, a welding process is performed to permanently connect them together. In the welding process, the flange of the interlocking member is enforced to be liquefied first and is liquefied more than the pipe member at the open end.

Abstract: A configured structure of a heat pipe wick structure, having a hollow tube with two ends and a wick structure disposed in the hollow tube and lining on an interior wall of the hollow tube. The wick structure has an opening part and a folded part at two ends of the hollow tube. The folded part has a folded surface pressed inwardly against the hollow tube, and two counter-folded surfaces at two sides of the folded surface. The edges at two sides of the folded surface are overlapped with the counter-folded surfaces, such that the folded surface and the counter-folded surfaces are sandwiched between the hollow tube and the bulk of the wick structure.

Abstract: A configured structure of a heat pipe wick structure, having a hollow tube with two ends and a wick structure disposed in the hollow tube and lining on an interior wall of the hollow tube. The wick structure has an opening part and a folded part at two ends of the hollow tube. The folded part has a folded surface pressed inwardly against the hollow tube, and two counter-folded surfaces at two sides of the folded surface. The edges at two sides of the folded surface are overlapped with the counter-folded surfaces, such that the folded surface and the counter-folded surfaces are sandwiched between the hollow tube and the bulk of the wick structure.