Abstract:
A centrifugal fan includes a hub and an impeller. The impeller is composed of a plurality of blades mounted around an outer circumference of the hub. The paraxial side of the blade forms a backward leaning structure, while the non-paraxial side thereof forms a forward leaning structure. A chamfer structure also can be formed at a paraxial side of each blade to enlarge the air inlet of the fan. Each blade further includes a protrusion, which is located at a side opposite to the inlet and extends toward a center of the hub, to increase the airflow rate through the fan motor. The centrifugal fan further includes an anti-decompression cap connected to an inlet side of the impeller to prevent an axial flow of the intake air from decompression.
Abstract:
A fan housing. The fan housing mounted on a frame of a system includes a main body, a first section, a second section and a fixing portion. Both the first and second sections are disposed on the main body. A gap is formed between the first and second sections. The fixing portion is formed in the gap.
Abstract:
A micro-motor with low cogging torque. The micro-motor includes a stator, a rotor, first and second magnetically conductive assemblies, and a bobbin. The first and second magnetically conductive assemblies are respectively comprised of a plurality of magnetically conductive sheets stacked together. The magnetically conductive sheets are each formed with a plurality of asymmetrical salient teeth. Furthermore, at least one of the magnetically conductive sheets is disposed reversely relative to the other magnetically conductive sheets. The rotor is coupled to the stator.
Abstract:
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.
Abstract:
Disclosed is a composite heat-dissipating system and its used fan guard which can impart a supercharging function to the heat-dissipating fans of the composite heat-dissipating system for efficient heat dissipation and reduces the noise generated when the heat-dissipating fans are operated. The fan guard includes a frame and a set of guard blades arranged inside and fixed onto an inner surface of the frame. The fan guard can be arranged upstream or downstream of the rotor blades of the heat-dissipating fans and assembled with the heat-dissipating fans in series or in parallel to supercharge the airflow out of the heat-dissipating fans.
Abstract:
The present invention relates to 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:
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.