Abstract: A fan housing capable of anti-backflow includes a frame and a plurality of anti-backflow sheets. The frame has a plurality of fixing parts disposed at an opening of an outlet side of the frame. The anti-backflow sheets are respectively pivoted to the fixing parts and cover the opening on the outlet side of the frame. A fan having the fan housing capable of anti-backflow is also disclosed.

Abstract: A fan comprises an impeller and a motor. The impeller has a hub, a plurality of blades and a plurality of reinforced elements. The blades are disposed around the hub. At least one reinforced element is disposed on the active surfaces of two adjacent blades. The blades and the reinforced elements are integrally formed as a single piece. The motor connects to the impeller for driving it to rotate.

Abstract: A hot swap fan includes a fan frame and a terminal seat. A corner of the fan frame has an accommodating space and two connecting parts. The connecting parts are disposed adjacent to the accommodating space. The terminal seat has a seat body and two coupling elements. The coupling elements are disposed at two sides of the seat body and disposed corresponding to the connecting parts, respectively, so that the seat body can be disposed at the accommodating space. The diameters of the connecting parts are larger than those of the coupling elements so that the terminal base can be slightly movable in the accommodating space.

Abstract: A fan housing capable of anti-backflow includes a frame and a plurality of anti-backflow sheets. The frame has a plurality of fixing parts disposed at an opening of an outlet side of the frame. The anti-backflow sheets are respectively pivoted to the fixing parts and cover the opening on the outlet side of the frame. A fan having the fan housing capable of anti-backflow is also disclosed.

Abstract: A fan includes at least one rotor, a housing and at least one terminal seat. The rotor is disposed in the housing. The terminal seat includes a seat body and at least one knife-type terminal. The seat body is disposed on a circumference of the housing and has at least one terminal slot. The knife-type terminal is disposed in the corresponding terminal slot.

Abstract: A fan comprises an impeller and a motor. The impeller has a hub, a plurality of blades and a plurality of reinforced elements. The blades are disposed around the hub. At least one reinforced element is disposed on the active surfaces of two adjacent blades. The blades and the reinforced elements are integrally formed as a single piece. The motor connects to the impeller for driving it to rotate.

Abstract: An impeller includes a hub and a plurality of blades disposed around an outer wall of the hub. Each of the blades has a leading edge with a predetermined distance below the top of the hub and a trailing edge protruding from the bottom of the hub. A fan including the impeller is also provided.