Abstract: A loop heat pipe with different pipe-diameters includes: an evaporation chamber having a casing and a wick disposed therein, the wick not occupying the casing fully such that an evaporation space is formed therebetween; a condensation element externally provided with a heat-dissipating unit and internally having a circulation channel, the circulation channel having a vapor connection-end and a liquid connection-end having a smaller inner diameter than the vapor connection-end; a vapor delivery-pipe having an end connecting to the casing and communicating with the evaporation space and another end connecting to the vapor connection-end of the condensation element and communicating with the circulation channel; and a liquid delivery-pipe having an end connecting to the casing and communicating with the casing and another end connecting to the liquid connection-end of the condensation element and communicating with the circulation channel, the liquid delivery-pipe having a smaller inner diameter than the vapor d

Abstract: A loop heat pipe having a condensation segment partially filled with a wick, including: an evaporation chamber having a casing and a first wick disposed therein, the casing being not fully filled with the first wick such that a first space is formed therebetween; a condensation segment being a hollow-cored tube partially filled with the second wick and having a vapor connection end and a liquid connection end communicating with the vapor connection end, the tube having therein a second wick corresponding in position to the liquid connection end and a second space corresponding in position to the vapor connection end; a vapor delivery pipe having an end communicating with the first space and another end communicating with the second space; and a liquid delivery pipe filled with a third wick and having an end communicating with the casing and another end communicating with the condensation segment.

Abstract: A loop heat pipe partitioned into a vapor channel and a liquid channel includes an evaporation chamber, a loop tube, a coupling cover, and a heat-dissipating unit disposed outside the loop tube. The evaporation chamber has a casing. The casing has therein a wick, a working fluid and an evaporation space. The loop tube has a connecting end and an engaging end. The connecting end connects to the casing. The loop tube has therein at least one partition element for partitioning the loop tube into a vapor channel and a liquid channel. The coupling cover is engaged with the engaging end of the loop tube and spaced apart from the at least one partition element by a predetermined distance to thereby form a circulation zone whereby the at least one vapor channel and the liquid channel communicate.

Abstract: A loop heat pipe with fluid slug pipes includes: an evaporation chamber having a casing and a wick disposed therein; a return line having two ends connected to the casing; and a working fluid filling the evaporation chamber. A condensation segment is defined as a predetermined length of a body of the return line. A vapor segment is defined as a portion of the return line, extending from the condensation segment to the vapor end. A liquid segment is defined as another portion of the return line, extending from the condensation segment to the liquid end. At least one partition element is disposed inside the liquid segment to thereby divide the liquid segment into at least two fluid slug pipes not in communication with each other but in communication with the condensation segment and the casing. The fluid slug pipes each have a smaller diameter than the return line.

Abstract: A flat heat pipe with composite wick material includes: a flat pipe; a pipe-wall wick structure disposed on an inner wall of the pipe and extending in an axial direction of the pipe, wherein, from a perspective of its cross section, the pipe has an upper inner wall and left and right arcuate inner walls, an opening facing downward, and a lower inner wall not being completely covered; a fiber bundle disposed at the opening formed at the pipe-wall wick structure; and a working fluid disposed in the pipe. One of two contact surfaces of the fiber bundle is coupled to the lower inner wall of the pipe by sintering. The other contact surface of the fiber bundle is in contact with the pipe-wall wick structure.

Abstract: A heat dissipation module is suitable to dissipate heat for a heat source on a circuit board, wherein a plurality of locking holes are disposed around the heat source. The heat dissipation module includes a heat sink, a locking rod, and two fasteners. The heat sink has a groove, and the locking rod has a rod body and two hooks extended from two ends of the rod body. The rod body is across the groove. In addition, each fastener is connected to each corresponding hook, and is fastened at the locking hole.