Abstract: The present invention discloses a parallel fan. The parallel fan includes an integrally formed fan frame having plural pairs of locating windows and a plurality of fans being respectively mounted in the plural pairs of locating windows. The parallel fan has an external single pair of power lines. Each pair of locating windows includes an inlet and an outlet for respectively enabling the fan to inhale from the inlet and discharge from the outlet.

Abstract: A fan assembly includes a first fan device having an engaging medium, and a second fan device having a corresponding engaging medium for engaging with the engaging medium of the first fan device, thereby allowing the second fan device to be combined with the first fan device. The fan device includes a fan frame having the engaging medium adapted to engage with the corresponding engaging medium of another fan frame of another fan device, and a fan secured in the fan frame.

Abstract: A fixing device disposed on an opening of a guiding tube for fixing a heat sink on the opening is disclosed. The fixing device includes a circular rib and three elastic fixers. The circular rib is set around the opening for depositing the heat sink and sealing seams between the opening and the heat sink when the heat sink is assembled onto the opening. The first elastic fixer is set on the circular rib and has a first inclined plane for fixing the heat sink on the opening by pulsing the first inclined plane against the heat sink along a first direction. The second elastic fixer is set on the circular rib and has an indent for fixing the heat sink on the opening by locking the heat sink in the indent to prevent the heat sink from moving along a second direction. The third elastic fixer is set on the circular rib and has a contact structure for pushing the heat sink along a third direction. The first, second, and third directions are perpendicular to each other.

Abstract: A rotor balance structure, which comprises a vane shell, a rotor case installed on the inner side of the vane shell, and a magnet installed on the inner side of the rotor case. The rotor is coupled with a stator, which comprises a coil and a magnetic conduction silicon steel set. When the coil on the stator is provided with an electrical current and generates a magnetic field, the magnet is attracted through the magnetic conduction silicon steel set to rotate the rotor balance structure. The feature of the rotor balance structure of the present invention is in that a magnetically conductive plate is included and installed under the inner side of the vane shell top. The magnetically conductive plate does not have any magnetic conduction with the rotor case but has an attractive magnetic interaction with the coil so that the rotational balance of the rotor balance structure can be improved.

Abstract: The present invention discloses a cooling system for temperature control, e.g., removing heat from electronic circuits. The cooling system includes a fan and an airflow guiding system where the guiding system includes an inlet air duct for guiding the airflow to the fan. The inlet air duct includes turbulence reduction grid for separating the air duct into a plurality of isolated flow path whereby the air turbulence is reduced. In a preferred embodiment, the airflow guiding system further includes an outlet duct for incorporating the fan therein wherein the outlet portion and the fan are directed to a direction different from the inlet air duct for guiding the airflow to the fan. In another preferred embodiment, the outlet duct and the fan are directed to a direction perpendicular to the inlet air duct for guiding the airflow to the fan.

Abstract: A motor having a magnetic bearing comprises a base formed with a bearing seat; a stator fixed to the base; a rotor provided with a rotation shaft and rotatable with respect to the stator by magnetic forces generated from excitation; a bearing fixed to the bearing seat of the base for receiving the rotation shaft of the rotor; and a magnetic element pair including a first element and a second element. The first element is telescopically interference-fitted on the rotation shaft, the second element is fixed relative to the bearing seat and lets the rotation shaft insert therethrough, and a magnetic force is generated between the first element and the second element. When the rotor rotates and an external force acts on the rotor in a direction, a magnetic force between the magnetic element pair counteracts the external force to achieve an axial positioning effect and avoid the contact wear.

Abstract: An improved construction of a fan fixed to a system housing when in use, including: an impeller which rotates and cuts the surrounding fluid enabling the surrounding fluid to form an axial flow, and which extends over a length in the axial direction of the fan; a driving device having a stator and a rotor adapted to drive the impeller to rotate; and a casing including a mounting seat fastened to the system housing for mounting the stator onto the system housing, and a frame adapted to cover outside the outer circumference of the impeller. The main feature of this fan resides in that the frame of the casing covers only part of the length in the axial direction outside the outer circumference of the impeller. Besides, another feature of this fan is that mounting seat is formed by vibration absorptive material at least at one of the portion where the mounting seat is fastened to the system housing and the portion where the mounting seat is fastened to the frame.

Abstract: A motor structure comprises a shaft formed with a circumferential groove; a hub fixed on the shaft and formed with a projected portion at the inner lower end of the central part thereof; at least two bearings for supporting the shaft for rotation; a bearing seat formed with at least one projected portion and for holding the at least two bearings, the projected portion being provided between the two bearings; and an elastic ring engaged with the circumferential groove and in cooperation with the projected portion of the bearing seat and the projected portion of the hub for fixing the bearing.

Abstract: An improved motor structure comprising a hollow stator base having a substantially cylindrical hub including a central hole, and a hollow stator having a silicon steel sheets set and a central bore through which the hub is inserted upon assembling. The hub is composed of a plurality of first upright ribs and a plurality of second upright ribs which are of the same number and are alternately arranged in circumferential direction, and a substantially cylindrical lower portion connecting to the lower end of each upright rib. Each pair of adjacent first upright rib and second upright rib are slightly apart from each other. Every first upright rib has an outer engaging portion formed on the upper outer surface thereof and every second upright rib has an outer step portion formed on the outer surface thereof, whereby the silicon steel sheets set of the stator may be engaged by and between the outer engaging portion and the outer step portion so as to retain the stator in axial direction relative to the stator base.

Abstract: A heat dissipation structure of a heat-dissipating box fan is disclosed. The structure is used for dissipating the heat generated by the motor of the fan unit. The structure has a bearing sleeve that comprises a hub in the form of a generally hollow cylindrical column and a sleeve base. The hub is inserted inside a central through hole of the fan motor, and the sleeve base covers the base of the plastic frame of the fan unit at the end of the frame opposing the other with the motor installed. A number of heat dissipation fins are formed over the lateral peripheral surface of the base of the bearing sleeve. The hub of the bearing sleeve has a hollow column shape of a polygonal peripheral configuration at the end close to the base and a hollow column shape of a cylindrical configuration for the remaining section thereof.