Delta Electronics, Inc.

Cheng-Wei Chen

Hsiang-Jung Huang

A thin cooling fan includes a fan shell, a motor, a plurality of blades, and a PCB. The fan shell comprises a base plate and a shell cover which cover to each other to form an inner space. The base plate has a first surface facing toward the inner space and a second surface having a receiving space and opposite to the first surface. The motor is combined in the inner space. The blades are disposed in the inner space and rotated by the motor. The PCB is disposed in the receiving space and flush with the second surface. Thus, the whole thickness of the cooling fan is reduced and the flow channel design in the inner space is not affected.

Thin cooling fan

A fan impeller includes a hub, a plurality of annular blades, and a plurality of spacers. The annular blades are stacked along an axial direction of the hub and disposed around the outer periphery of the hub. The extension directions of the annular blades are perpendicular to the axial direction of the hub. Each of the spacers is disposed between the two adjacent annular blades. Each of the annular blades has an inner periphery. A gap is provided between the inner periphery and the hub. Each of the annular blades further includes a plurality of spokes and an inner ring, the inner ring is disposed on and connected to the outer periphery of the hub, and two ends of the spoke are connected to the inner periphery and the inner ring of the annular blade. The spacers are separately disposed on the inner rings of the annular blades, respectively.

A fan includes a frame, an impeller, and a motor. The impeller is disposed in the frame and includes a hub, a plurality of annular blades, and a plurality of spacers. The annular blades are stacked along an axial direction of the hub and disposed around the outer periphery of the hub. The extension directions of the annular blades are perpendicular to the axial direction of the hub. Each of the spacers is disposed between the two adjacent annular blades. The motor is disposed in the frame and drives the impeller to rotate to induce an airflow. The thickness of each annular blade is smaller than or equals to 0.2 mm.

A thin cooling fan () includes a fan shell (), a motor (), a plurality of blades (), and a PCB (). The fan shell () comprises a base plate () and a shell cover () which cover to each other to form an inner space (). The base plate () has a first surface () facing toward the inner space () and a second surface () having a receiving space () and opposite to the first surface (). The motor () is combined in the inner space (). The blades () are disposed in the inner space () and rotated by the motor (). The PCB () is disposed in the receiving space () and flush with the second surface (). Thus, the whole thickness of the cooling fan () is reduced and the flow channel design in the inner space () is not affected.

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Taoyuan, Taiwan

Cheng-Wei Chen