Abstract:
A motor structure is disclosed. The motor structure includes a stator and a rotor. Among these, the stator further includes a coil seat defined by a bottom plate, a plurality of first teeth and a plurality of second teeth. A coil is formed in the coil seat. The first teeth formed around inner periphery of the bottom plate and have a first extending portion extending so as to constitute a reversed L shape. The second teeth formed around outer periphery of the bottom plate and have a second extending portion so as to constitute a reversed L shape. The rotor, coupled to the stator, further have a circular magnet formed above the coil seat, the first extending portion and the second extending portion. Each of the first and second extending portions further includes a chamfer, a fillet, a clearance, a fold and different dimension.
Abstract:
A fan guard for guiding airflow to dissipate heat generated from a heat-generating device has an airflow inlet disposed on an upper portion of the fan guard for introducing the airflow into an interior of the fan guard, an airflow outlet disposed on a lower portion of the fan guard for enabling the airflow to flow out of the fan guard and to the heat-generating device, and a plurality of ribs disposed in the airflow outlet of the fan guard for separating the airflow outlet into a plurality of isolated flow paths. In addition, the inner diameter of the airflow outlet is smaller than that of the airflow inlet, and there is a space formed between the ribs of the fan guard and the heat-generating device for enhancing the heat-dissipating efficiency.
Abstract:
The present invention discloses a self-stabilizing heat exhaust system including at least several rate-variable fans. Each of the rate-variable fans further includes a power-input terminal for inputting power to the rate-variable fans; a grounded terminal for providing the rate-variable fan a lower level; a signal-output terminal coupled to an adjacent rate-variable fan for outputting a speed signal which may be a normal signal or an abnormal signal; a signal-input terminal coupled to another adjacent rate-variable fan for receiving the speed signal; and a control circuit responding to the abnormal signal to make the rate-variable fan rotate at the higher rotation rate and responding to the normal signal to make the rate-variable fan rotate at the lower rotation rate.
Abstract:
A heat-dissipating device for dissipating internal heat generated from the heat-dissipating device is provided. The heat-dissipating device includes a motor having a rotator and a stator for causing the rotator to rotate, and a fan connected with the rotator and having a hub having a slot and a plurality of holes thereon for rotating and dissipating the heat.
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. 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.
Abstract:
A heat-dissipation structure for a motor. The heat-dissipation structure comprises a shaft, a seat and a rotator. The rotator coupled to the seat by the shaft comprises a housing and a cover. The housing comprises an inner side connected to the shaft and a bottom comprising at least one through hole. The cover is connected to an exterior of the bottom of the housing and a distance is formed between the cover and the housing, so that the cover prevents objects from entering the through hole.
Abstract:
A fan is disclosed for use in a system, and the system has at least one connection structure. The fan is mainly composed of an impeller and a base, and the impeller is connected to the base. The impeller at least has a hub, a plurality of blades and a driver. The base has at least one engaging member, and the engaging member is corresponding to the connection structure. Further, the fan is fixed on the system by connecting the engaging member and the connection structure together.
Abstract:
A heat sink for coolers is provided. The heat sink contains a heat conductive element, a heat dissipating shell covering over the heat conductive element, and a plurality of heat dissipating fins installed on the heat dissipating shell. The heat conductive element includes a heat conductive plate and a heat conductive block installed at the center thereof. The area of the bottom surface of the heat conductive block is greater than that of the topmost surface thereof. When the lower surface of the heat conductive plate is in contact with a device that needs heat dissipation, the heat conductive block increases the heat conducting volume at the center of the heat conductive plate, so that the heat produced by the device can be released at an optimal rate.