摘要:
A centrifugal fan mounted in a laptop computer is assembled to include a casing having an intake opening and a horn-shaped outlet opening for increasing the air outflow, an impeller rotatably mounted in the casing with a reduced diameter and bared inner space for increasing the air capacity, and fan blades attached to the impeller, wherein each of fan blades is chipped at the rim for lowering the noise.
摘要:
Disclosed is a backup heat-dissipating system having a serial fan which can be assembled easily, fastly and conveniently, and can effectively eliminate the interference between fans and prevent the air leakage resulting from the failed fan unit. The backup heat-dissipating system includes a main frame, a first rotor device disposed in the main frame and including a first control device, and a second rotor device disposed in the main frame to be coupled with the first rotor device in series along an axial direction of the main frame and including a second control device. When the first rotor device fails, the first control device will output a signal to the second control device for driving the second rotor device to rotate at a relatively higher speed.
摘要:
An axial-flow fan device includes a fan frame having an intake opening and an outlet opening, and an impelling apparatus mounted in the fan frame and having fan blades and an air gap generation member surrounding the fan blade. The air gap generation member which is made of a plurality of rings is mounted on a blade wheel and connected to the ends of the fan blades to reinforce the fan blades, with each of the rings overlapping and separated from each other for generating a plurality of air gaps when the fan blades rotate.
摘要:
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. And, the inlet air duct and the outlet duct are connected via a corner duct-connector having a blunted corner angle for smoothing and reducing airflow turbulence flowing there through. In another preferred embodiment, the fan having a rotational shaft hung to the corner duct-connector whereby the fan is structurally supported only on the rotational shaft for reducing air turbulence. In another preferred embodiment, the fan includes a plurality of blades wherein the blades are configured to have a bending blade surface constituting same direction screw shape for reducing airflow turbulence. In another preferred embodiment, the blades are formed with a notch at a front end of the blades to reduce a reverse flow due to air resistance for further reducing airflow turbulence. In another preferred embodiment, the inlet air duct further includes other openings for increasing a flow rate of the airflow to improve the cooling efficiency.
摘要:
Disclosed is a stator structure of a rotary device and its forming method. The method for forming a stator structure includes the steps of (a) forming a first part having a first middle portion with a through hole, and M pieces of extending portions extending from the first middle portion, (b) forming a second part having a second middle portion with a through hole, and N pieces of extending portions extending from the second middle portion, (c) alternately bending the M pieces of extending portions of the first part toward a first direction and alternately bending the N pieces of extending portions of the second part toward a second direction opposite to the first directon, respectively, and (d) correspondingly combining the first and second parts together to form the stator structure in which the bent extending portions of the first and second parts constitute a columnar portion of the stator structure for winding a coil thereon, wherein M and N are even numbers not less than four, respectively.
摘要:
Disclosed is a contact device adapted to be mounted on a heat-dissipating device for hot swap in a system. The contact device includes a main body having a resilient member protruding from one side thereof, a conductive member disposed in the main body for electrically connecting the heat-dissipating device and the system, and a first engaging member disposed on the resilient member for engaging with a second engaging member of the heat-dissipating device to allow the main body to be detachably mounted on the heat-dissipating device.
摘要:
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. Besides, the hub has a first non-cylindrical outer surface, and the central bore of the stator has a second non-cylindrical inner surface engaged with the first non-cylindrical outer surface. Thus the stator may be retained in circumferential direction relative to the stator base through engagement between the first non-cylindrical outer surface and the second non-cylindrical inner surface.
摘要:
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.