摘要:
A heat dissipation device for removing heat from LED chips includes a heat sink and a plurality of substrates. The heat sink comprises a base plate. A plurality of fins extends upwardly from the base plate. The substrates each have a unidirectional heat transfer and are attached to a bottom face of the heat sink. Each of the substrates defines a first wall on which The LED chips are mounted and a second wall coupled to the heat sink. The substrates only transfer heat from the first wall to the second wall and restrict the heat transfer in a reverse direction. When the LED chips generate heat, the heat is transferred to the fins of the heat sink via the unidirectional substrates to lower temperature of the LED chips.
摘要:
A miniature liquid cooling device includes a casing (10) defining a first chamber (102), a second chamber (104) and a third chamber (106) communicating with the first chamber. The first and the third chambers cooperatively form a work channel for liquid. An impeller (21) is rotatably mounted in the first chamber to circulate the liquid. A filter (17) is mounted in the second chamber and defines a plurality of orifices (1704). When the impeller rotates, first the liquid firstly enters the second chamber via an inlet. (122), and then the liquid flows through the filter within the second chamber, whereby air bubbles in the liquid leave the liquid and escape from the filter via the orifices. The escaped air bubbles enter the second chamber. The deaerated liquid flows into the work channel and finally is driven to low out of the liquid cooling device via an outlet (124).
摘要:
A cooling plate of a liquid cooling includes a chamber hermetically defined therein, an outlet, and an inlet. The outlet and the inlet communicate with the chamber for circulating liquid through the chamber. One of the outlet and the inlet is located in the other one of the outlet and the inlet.
摘要:
The disclosure relates to an evaporator and a loop heat pipe employing it. The evaporator includes a shell having an evaporation chamber and a compensation chamber defined therein, a partition being received in the shell and partitioning the evaporation chamber and the compensation chamber, and a wick structure being adhered to an inner wall of the shell corresponding to the evaporation chamber and extending through the partition and into the compensation chamber. The loop heat pipe includes the evaporator mentioned above, a pipe connecting two opposite ends of the evaporator to form a closed loop and a working medium contained in the closed loop.
摘要:
An LED lamp includes a heat dissipation device and a plurality of LED modules. The heat dissipation device includes a heat conductive member and a fin unit. The LED modules are attached to a top surface of a first plate of the heat conductive member. The heat conductive member comprises a plurality of posts embedded in the top surface of the first plate. Peripheries of the first and second plates are in a hermetical conjunction with each other to form a chamber containing phase-changeable working fluid therein. The first plate has a plurality of receiving recessions which are depressed downwardly from the top surface thereof and respectively receive the posts. Screws are used to extend through the LED modules to threadedly engage in the posts thereby to intimately mount the LED modules on the top surface of the first plate of the heat conductive member.
摘要:
An LED module includes a housing component, a frame holding an LED thereon and covered by the housing component, a fastener located in and secured to the housing component, a heat spreader located in the fastener and secured to the fastener and a heat transfer member having a heat-dissipating unit remote from the LED and a heat pipe thermally connecting with the heat spreader, the LED and the heat-dissipating unit. The housing component tightly presses the frame on the fastener to make a close contact between the heat pipe and the frame. The heat pipe transfers heat from the LED to the heat spreader and the heat-dissipating unit. The heat spreader and the heat-dissipating unit each have a large heat-dissipating surface, whereby the heat generated by the LED can be quickly dissipated by the heat spreader and the heat-dissipating unit.
摘要:
A memory module assembly includes a pair of heat-dissipation plates (10), a printed circuit board (20) sandwiched between the heat-dissipation plates (10), and four clamps (30) for securing the heat-dissipation plates (10) onto opposite sides of the printed circuit board (20). Each clamp includes a connecting portion (32) and a pair of elastic pressing portions (34) extending from opposite free ends of the connecting portion. Each pressing portion has a pair of hooks (342) extending from opposite lateral sides thereof and an engaging portion extending (344) from a free end thereof and clamping on an end of the heat-dissipation plate. The hooks are inserted into openings (18) defined in the heat-dissipation plates and engage with inner surfaces of the heat-dissipation plates.
摘要:
A memory module assembly includes a printed circuit board (10) having a heat-generating electronic component (50) thereon, a pair of heat-dissipating plates (20) attached on the printed circuit board, and a pair of clamps (30) clamping the heat-dissipating plates and the printed circuit board therebetween. Each heat-dissipating plate includes a pair of supporters (28) and a handle (24) rotatably engaging with the supporters. The heat-dissipating plates are installed on the opposite sides of the printed circuit board by exerting a force to the handles to make them move toward each other wherein the force overcomes the spring force of the clamps.
摘要:
A heat dissipation device for a light emitting diode (LED) module includes a liquid cooling system. The liquid cooling system includes a heat-absorbing member, which includes an inlet, an outlet and at least one pipe extending between the inlet and the outlet. The inlet and the outlet are provided for permitting liquid to flow through the at least one pipe, which is in thermal contact with at least one LED of the LED module.
摘要:
A memory module assembly includes a printed circuit board (10) having a heat-generating electronic component (50) thereon, a pair of heat-dissipating plates (20) attached on the printed circuit board, and a pair of clamps (30) clamping the heat-dissipating plates and the printed circuit board therebetween. Each heat-dissipating plate includes a pair of supporters (28) and a handle (24) rotatably engaging with the supporters. The heat-dissipating plates are installed on the opposite sides of the printed circuit board by exerting a force to the handles to make them move toward each other wherein the force overcomes the spring force of the clamps.