Abstract: The present invention relates to a balance structure of a fan rotor, which comprises a fan wheel and a balancing part. The fan wheel has a hub and a plurality of blades disposed on the circumferential side of the hub. The hub has a top wall connected to a sidewall. An unbalanced portion is selectively disposed on the top wall or on the sidewall. The unbalanced portion is disposed on one side of a symmetrical axis of the hub. The balancing part is disposed at the unbalanced portion such that the fan rotor is balanced.

Abstract: A heat dissipation fan blade structure and a heat dissipation fan thereof. The heat dissipation fan blade structure includes a main fan blade and a subsidiary fan blade. The main fan blade has a root section and a free end section. The root section is connected with a hub. The free end section radially extends in a direction away from the hub. A main body section is formed between the root section and the free end section. The subsidiary fan blade extends from the free end section of the main fan blade toward the root section of the main fan blade to the main body section. The subsidiary fan blade and the main fan blade together form a loop structure defining a flow way between the main fan blade and the subsidiary fan blade.

Abstract: A back cover unit applied to portable device and having heat conduction function includes a ceramic back cover having an outer surface and an inner surface. The outer surface faces an external environment, while the inner surface faces a receiving space of a portable electronic device. A heat contact section is disposed on the inner surface in a position corresponding to at least one heat source disposed in the receiving space. The heat contact section has a contact face in contact with the heat source, whereby the heat generated by the heat source can be transferred through the heat contact section to the ceramic back cover to dissipate the heat.

Abstract: A heat-dissipation fan includes a rotary assembly and a plurality of rotary cylinders mounted on an outer surface of the rotary assembly to serve as cylindrical fan blades of the heat-dissipation fan. The rotary assembly includes a plurality of first electrical conducting units and a second electrical conducting unit. The rotary cylinders move along with the rotary assembly when the latter rotates and are correspondingly electrically connected to the first electrical conducting units to be rotatable about their respective centerlines.

Abstract: A vapor chamber water-filling section sealing structure. The vapor chamber water-filling section sealing structure includes a main body and a capillary structure. The main body has a first plate body and a second plate body, which are correspondingly mated with each other to together define an airtight chamber and a water-filling section. A flange is disposed along an outer periphery of the main body. The water-filling section has a water-filling notch and a water-filling passage. Two ends of the water-filling passage are respectively connected with the flange and the water-filling notch to communicate with the airtight chamber. A portion of the water-filling passage that is connected with the flange is pressed to have a height equal to the height of the flange or lower than the height of the flange. The capillary structure is disposed in the airtight chamber of the main body.

Abstract: A radiating fin and a connection structure composed of multiple radiating fins. Each radiating fin has a main body formed with a first plane face. A first bending edge and a second bending edge extend from two sides of the first plane face. The first plane face is formed with a first perforation and a second perforation and a third perforation and a fourth perforation. A first extension section and a second extension section respectively from the first and second bending edges. Two front ends of the first extension section are bent and formed with a first latch plate and a second latch plate. Two front ends of the second extension section are bent and formed with a third latch plate and a fourth latch plate. The latch plates of a forward radiating fin are correspondingly passed through and latched in the perforations of an adjacent rearward radiating fin.

Abstract: A two-phase fluid heat transfer structure includes: at least one evaporator having an evaporation chamber, which containing a first working medium; at least one evaporator tube body having a first end and a second end, which communicating with the at least one evaporator to form a loop of the first working medium, the at least one evaporator tube body further having a condensation section between the first and second ends; at least one heat sink; at least one heat sink tube body having a heat absorption section, which containing a second working medium, the at least one heat sink tube body being connected to the at least one heat sink; and at least one heat exchanger having a first face and a second face for the condensation section of the evaporator tube body and the heat absorption section of the heat sink tube body to attach to.

Abstract: A series fan structure includes at least one first combining part and a series fan assembly, which has a first fan and a second fan mated with the first fan. The first fan has a first base and a lateral side, which together internally define a first passage. The first base is outwardly extended to form a plurality of a first supporting portions connected to the first lateral side. A first connecting space is defined among the first supporting portions and communicated with the first passage. The second fan has a second base and a lateral side, which together internally define a second passage, which is communicated with the first passage and the first connecting space. The first combining part is located in the first connecting space and connected to the first supporting portions and has a plurality of first holes communicated with the first and the second passage.

Abstract: A nested finned heat sink with heat pipe(s). A heat dissipation unit includes a base seat and a first radiating fin assembly. The first radiating fin assembly includes multiple first radiating fins. Two ends of each first radiating fin are respectively formed with a first end edge and a second end edge on a first side. The respective first radiating fins are nested with height and width gradually increased. Each first radiating fin is formed with at least one first support section and a first opening in a position corresponding to the first support section. The first support section abuts against and supports another first radiating fin.

Abstract: A fan central tube coupling structure includes a base and a central tube. The base has a first section and a second section that together define an upward tapered receiving recess below the base. The central tube is externally provided on around a bottom end with a first and a second protruded section and an engagement groove defined between the first and second protruded sections. The second protruded section has an interference pressing surface defined on an outermost peripheral surface thereof. The central tube is axially extended through the base, such that the second protruded section is axially press-fitted into the tapered receiving recess and the interference pressing surface is radially outward forced against the tapered receiving recess. In the meantime, the second section of the base is fitted in the engagement groove and clamped in place by between the first protruded section and the second protruded section.

Abstract: A heat dissipation system with air sensation function includes a chassis, multiple fans, multiple air sensation units and an external control device connected to the fans. The chassis has an installation face for installing the fans thereon. The air sensation units are respectively disposed on the fans for detecting the air state of the corresponding fans to generate an air sensation signal. The external control device serves to receive the air sensation signal transmitted from the air sensation units and compare the data contained in the air sensation signal with preset data so as to control/adjust the rotational speed of the corresponding fans. Accordingly, a uniform airflow flows out of the fans to effectively lower the noise.

Abstract: A motor stator structure includes a main body and multiple stopper plates. The main body has multiple magnetic poles and a shaft hole. The magnetic poles outward extend from the main body. Each magnetic pole has a free end outward extending from the main body. The shaft hole passes through the main body between two ends thereof. The stopper plates are respectively correspondingly assembled with the free ends of the magnetic poles. In the motor stator structure, the windings are more densely wound on the magnetic poles to enhance the magnetization efficiency.

Abstract: A protection element for heat dissipation unit includes a main body and a protection element. The main body is divided into a working zone and a sealing zone. The sealing zone is located around an outer periphery of the working zone and is provided with a notch area, to which a fluid-adding and air-evacuating pipe is connected. The protection element is a ductile structure correspondingly arranged at the notch area to contact with the sealing zone of the main body and the pipe. With the arrangement of the protection element, the fluid-adding and air-evacuating pipe is protected against collision and impact and accordingly, the main body of the heat dissipation unit is protected against vacuum and working fluid leakage.

Abstract: A cooling fan structure with rotational cylindrical fan vanes includes a rotary body and multiple rotational cylindrical bodies. The rotary body includes a rotor assembly and a stator assembly corresponding to the rotor assembly for driving the rotor assembly to rotate. The rotor assembly includes a hub. The hub has a top section and a circumferential section. The rotational cylindrical bodies are rotatably disposed on the top section or the circumferential section of the hub. When the rotary body rotates, the rotational cylindrical bodies are driven by the rotary body to self-rotate.

Abstract: A micro vapor chamber includes: a first plate body having a first side and a second side, the second side having at least one condensation section; a second plate body having a third side and a fourth side, the third side being provided with at least one evaporation section and multiple flow collection sections, the third side being correspondingly mated with the second side of the first plate body, the fourth side contacting with at least one heat source; and a mesh structure body disposed between the first plate body and the second plate body. The mesh structure body is a capillary structure having multiple meshes and a first face and a second face. The first and second faces of the mesh structure body are mated with the condensation section and the evaporation section and the flow collection sections respectively to together define multiple flow ways.

Abstract: A fan blade with improved structure includes a hub, a plurality of blades. The hub has a lateral side having two ends, one of which is formed a top side and the other end is extended to form an extended section, and a plurality of connecting slots located on the periphery of the extended section. Each blade has a first end correspondingly engaged in respective connecting slot and a second end. With these arrangements, the fan blade with improved structure can increase structural strength of thin fan blades and be easy to connect the hub to the blades.

Abstract: A straight-through structure of heat dissipation unit includes a first plate body and a second plate body correspondingly mated with each other to define a closed chamber. A hydrophilic layer is disposed on the surface of the closed chamber and a capillary structure is disposed in the closed chamber. The first plate body is formed with a first recess, a first perforation and a second recess. The first recess is connected with the capillary structure disposed on the third face of the second plate body. One end of the second recess abuts against the capillary structure. The capillary structure layer is not in contact with the first recess. The second plate body has a second perforation in alignment with the first perforation. When it is necessary to perforate the heat dissipation unit, the straight-through structure can keep the closed chamber in the vacuumed and airtight state.

Abstract: A vibration damper structure and a fan thereof. The vibration damper structure includes a support body, a fixing seat and an elastic member. The support body has a lower end. The fixing seat has a tubular section. The tubular section has a protrusion end corresponding to the lower end of the support body and a receiving space. The receiving space has a bottom section. The elastic member is disposed in the receiving space of the tubular section and positioned between the support body and the fixing seat. Two ends of the elastic member are respectively in contact with the lower end of the support body and the bottom section of the receiving space. The vibration damper structure is applied to the fan to greatly reduce the vibration of the fan in operation.

Abstract: An airtight penetration structure for heat dissipation device includes a first plate member, a second plate member, and a plurality of hollow shaft members. The first and the second plate member are closed to each other to together define a closed chamber between them. The hollow shaft members are respectively provided at two free ends with a first and a second flange. The hollow shaft members are correspondingly extended through fastening holes provided on the first and the second plate member with the first and the second flanges attached to and flush with outer surfaces of the first and the second plate member to seal around the fastening holes, so that the closed chamber between the first and the second plate member is in an airtight state.

Abstract: A heat dissipation element includes a first and a second housing, and a first and a second working fluid. The first housing has a first inner space. At least one pipe is formed on one side of the first housing and has a second inner space. The first and the second inner space are communicable and together define a first chamber. The second housing has a second chamber. A first and a second working fluid is, respectively, provided in the first and the second chamber. One side of the second housing is fixedly connected to one end of the pipe. The first and the second chamber are incommunicable. With these arrangements, the heat dissipation element not only can provide better heat spreading and heat transfer effect, but also can be produced at largely lower manufacturing costs.