Abstract: A performance testing apparatus for a heat pipe includes an immovable portion having a cooling structure defined therein for cooling the heat pipe requiring test. A movable portion is capable of moving relative to the immovable portion and has a cooling structure defined therein for cooling the heat pipe. A receiving structure is located between the immovable portion and the movable portion for receiving the heat pipe therein. A positioning structure extends from at least one of the immovable portion and the movable portion for avoiding the movable portion from deviating from the immovable portion during movement of the movable portion relative the immovable portion to ensure the receiving structure being capable of precisely receiving the heat pipe. At least a temperature sensor is attached to at least one of the immovable portion and the movable portion for detecting temperature of the heat pipe.

Abstract: A performance testing apparatus for a heat pipe includes an immovable portion having a cooling structure defined therein for cooling a heat pipe to be tested. A movable portion is capable of moving relative to the immovable portion and has a cooling structure defined therein for cooling the heat pipe. A receiving structure is located between the immovable portion and the movable portion for receiving the heat pipe therein. At least a temperature sensor is attached to at least one of the immovable portion and the movable portion for thermally contacting the heat pipe in the receiving structure for detecting temperature of the heat pipe. An enclosure encloses the immovable portion and the movable portion therein and has sidewalls thereof slidably contacting at least one of the immovable portion and the movable portion.

Abstract: A performance testing apparatus for a heat pipe includes an immovable portion having a cooling structure defined therein for cooling a heat pipe requiring test. A movable portion is capable of moving relative to the immovable portion. A receiving structure is defined between the immovable portion and the movable portion for receiving the heat pipe therein. A positioning structure extends from at least one of the immovable portion and the movable portion to ensure that the receiving structure is capable of precisely receiving the heat pipe therein. At least a temperature sensor is attached to at least one of the immovable portion and the movable portion to detect a temperature of the heat pipe. An enclosure encloses the immovable portion and the movable portions therein, and defines a space for movement of the movable portion relative to the immovable portion.

Abstract: A performance testing apparatus for a heat pipe includes an immovable portion having a cooling structure defined therein for cooling a heat pipe needing to be tested. A movable portion is capable of moving relative to the immovable portion. A receiving structure is located between the immovable portion and the movable portion for receiving the heat pipe therein. At least a temperature sensor is attached to at least one of the immovable portion and the movable portion for thermally contacting the heat pipe in the receiving structure for detecting temperature of the heat pipe. An enclosure encloses the immovable portion and the movable portions and has sidewalls thereof slidably contacting at least one of the immovable portion and the movable portion.

Abstract: A performance testing apparatus for a heat pipe includes an immovable portion having a cooling structure defined therein for cooling the heat pipe. A movable portion is capable of moving relative to the immovable portion. A receiving structure is defined between the immovable portion and the movable portion for receiving the heat pipe therein. A concavo-convex cooperating structure is defined in the immovable portion and the movable portion for ensuring the receiving structure being capable of precisely receiving the heat pipe. Temperature sensors are attached to the immovable portion and the movable portion to detect a temperature of the heat pipe. An enclosure encloses the immovable portion and the movable portions therein to provide a thermally stable environment for the heat pipe during test.

Abstract: A performance testing apparatus for a heat pipe includes an immovable portion having a cooling structure defined therein for cooling a heat pipe requiring test. A movable portion is capable of moving relative to the immovable portion. A receiving structure is defined between the immovable portion and the movable portion for receiving the heat pipe therein. A concavo-convex cooperating structure is defined in the immovable portion and the movable portion for avoiding the movable portion from deviating from the immovable portion to ensure the receiving structure being capable of precisely receiving the heat pipe. At least a temperature sensor is attached to at least one of the immovable portion and the movable portion for thermally contacting the heat pipe in the receiving structure to detect a temperature of the heat pipe.

Abstract: A performance testing apparatus for a heat pipe includes an immovable portion having a cooling structure defined therein for cooling a heat pipe requiring to be tested. A movable portion is capable of moving relative to the immovable portion and has a cooling structure therein for cooling the heat pipe. A receiving structure is located between the immovable portion and the movable portion for receiving the heat pipe therein. At least one temperature sensor is attached to at least one of the immovable portion and the movable portion. The least one temperature sensor has a detecting section exposed in the receiving structure for thermally contacting the heat pipe in the receiving structure to detect a temperature of the heat pipe.

Abstract: A heat pipe includes a metal casing (10) filled with a working fluid therein, a capillary wick (20) provided inside of the metal casing and a tube (30) contacting with a surface of the capillary wick. The metal casing includes an evaporating section (40), a condensing section (60) and an adiabatic section (50) between the evaporating section and the condensing section. A vapor passage (70) is formed inside of the casing and a liquid channel (80) is defined by the capillary wick. The working fluid in vapor state flows from the evaporating section towards the condensing section along the vapor passage and the working fluid in liquid state returns to the evaporating section from the condensing section along the liquid channel. The tube separates the vapor from the liquid at a place where the tube is located.

Abstract: A performance testing apparatus for a heat pipe includes an immovable portion having a cooling structure defined therein for cooling a heat pipe requiring test. A movable portion is capable of moving relative to the immovable portion. A receiving structure is defined between the immovable portion and the movable portion for receiving the heat pipe therein. A positioning structure extends from at least one of the immovable portion and the movable portion and avoids the movable portion from deviating from the immovable portion to ensure that the receiving structure is capable of precisely receiving the heat pipe therein. At least a temperature sensor is attached to at least one of the immovable portion and the movable portion for thermally contacting the heat pipe in the receiving structure to detect a temperature of the heat pipe.

Abstract: A heat pipe includes a metal casing (100) filled with a working fluid therein, a capillary wick (200) provided inside of the metal casing and a tube (300) contacting with a surface of the capillary wick. The capillary wick extends in an axial direction of the casing and has a middle portion separated from an inner wall of the metal casing. A vapor passage (700) is formed between an outer wall of the tube and the inner wall of the casing and a liquid channel (800) is defined by the capillary wick. The working fluid in vapor state flows along the vapor passage and the working fluid in liquid flows along the liquid channel. The tube separates the vapor from the liquid at a place where the tube is located.

Abstract: An integrated liquid cooling system for removing heat from a heat-generating component includes a base (10), a pump (20) mounted in the base, and a heat-dissipating member (30) communicating with the pump and coupling with the base. The pump includes a casing (21) having a chamber (212). A rotor (22), a partition seat (23) and a stator (24) are received in the chamber. A top cover (25) is attached on the casing. The casing includes a bottom plate (214) absorbing heat generated by the electronic component. A plurality of pairs of interconnecting surfaces are formed between the partition seat and the rotor and between the rotor and the bottom plate, one surface of the at least one pair of interconnecting surfaces forming a plurality of grooves (235, 237) or protrusions (234, 2222), thereby forming a fluid film therebetween for dynamically supporting a thrust on the rotor during a rotation of the rotor.

Abstract: A performance testing apparatus for a heat pipe includes an immovable portion having a cooling structure defined therein for cooling a heat pipe needing to be tested. A movable portion is capable of moving relative to the immovable portion. A receiving structure is defined between the immovable portion and the movable portion for receiving the heat pipe therein. At least a temperature sensor is attached to at least one of the immovable portion and the movable portion. The least a temperature sensor has a detecting section exposed in the receiving structure for thermally contacting the heat pipe in the receiving structure to detect a temperature of the heat pipe.

Abstract: A heat pipe includes a metal casing (100) filled with a working fluid therein, a capillary wick (200) provided inside of the metal casing and a tube (300) contacting with a surface of the capillary wick. The capillary wick extends in an axial direction of the casing. A plurality of spaced vapor passages (700) is formed by the capillary wick in the casing and a liquid channel (800) is defined by the capillary wick. The working fluid in vapor state flows along the vapor passages and the working fluid in liquid state flows along the liquid channel. The tube separates the vapor from the liquid at a place where the tube is located.

Abstract: An integrated liquid cooling system for removing heat from a heat-generating component includes a base (10), a pump (20) mounted in the base and a heat-dissipating member (30) communicating with the pump and coupling with the base. The pump includes a casing (21) having a chamber (212). A rotor (22), a partition seat (23) and a stator (24) are in turn received in the chamber. A top cover (25) is attached on the casing. The casing includes a bottom plate (214) having a bottom surface. The bottom surface of the bottom plate contacts the heat-generating electronic component for absorbing heat generated by the electronic component.

Abstract: An integrated liquid cooling system for removing heat from a heat-generating component includes a base (10), a pump (20) mounted in the base and a heat-dissipating member (30) communicating with the pump and coupling with the base. The pump includes a casing (21) having a chamber (212). A rotor (22), a partition seat (23) and a stator (24) are in turn received in the chamber. A top cover (25) is attached on the casing. The casing includes a bottom plate (214) having a bottom surface. The bottom surface of the bottom plate contacts the heat-generating electronic component for absorbing heat generated by the electronic component.

Abstract: A heat pipe includes a casing (100) receiving working fluid therein, and a wick structure (200) formed at an inner wall of the casing. The casing includes an evaporating section (120) and a condensing section (140). The wick structure at the evaporating section has a thickness larger than that of the wick structure at the condensing section. A method for manufacturing the wick structure includes the following steps: providing a hollow casing (10) arranged aslant to horizon; filling a slurry (40) of powders into the casing; rotating the casing with the slurry and heating the slurry to form a green layer (60) held against an inner wall of the casing; and sintering the green layer in the casing to form the wick structure.

Abstract: A heat pipe includes a casing and a sintered powder wick arranged at an inner surface of the casing. The sintered powder wick is made of spherical metal powder (300), the spherical metal powder having an apparent density ranging from 3.3 g/cm3 to 4.8 g/cm3 to reduce micro pores of the sintered powder wick and improve ability of heat transfer of the heat pipe.

Abstract: A powder feeding apparatus of manufacturing a heat pipe includes a vibration tray having a supporting board and a plurality of pipes positioned in the supporting board of the tray. A mandrel is coaxially inserted in each of the pipes. A feeder is located corresponding to an end of each pipe for feeding powder into the pipe. A vibration source drive the tray to vibrate along a direction perpendicular to an axial direction of each of the pipes when feeding the powder into the pipes from the feeders, whereby the pipes vibrate with substantially the same amplitude in the vibration direction.

Abstract: An electric fan includes a frame (10) having a central tube (11) extending therefrom, a bearing (30) received in the central tube, a stator (50) mounted around the central tube, and a rotor (70) being rotatably supported by the bearing received in the central tube. The frame defines an air inlet (19) and an air outlet (17) at two different sides thereof. The stator includes two poles (51, 53) and a tube (55) arranged between the poles. Each pole includes a basewall (511, 531) and a sidewall (513, 533) extending from the basewall. Each sidewall includes an upper portion adjacent to the air inlet expanding radially along a direction from the air inlet to the air outlet of the electric fan.

Abstract: A method and an apparatus (20) for removing non-condensable air from, and filling a predetermined amount of working fluid into, a heat dissipation device (10) are disclosed. The method includes the following steps: pumping the non-condensable air out of the heat dissipation device through an opening (12) thereof; measuring a vacuum degree of an interior of the heat dissipation device; filling a predetermined amount of working fluid into the heat dissipation device through the opening when the interior of the heat dissipation device reaches a predetermined vacuum degree; and sealing the opening of the heat dissipation device. The apparatus includes a vacuum pump (22), a vacuum gauge (26) and a fluid-storage tank (24) for executing the above pumping, measuring and filling steps, respectively.