Delta Electronics, Inc.

Ya-Ting Chang

Chin-Hung Lee

Chih-Wei Chan

Hsiang-Jung Huang

Shu-Cheng Yang

Chieh-Hung Chang

Chieh-Shih Chang

An impeller includes a hub, an outer ring, a plurality of first blades and a plurality of second blades. The plurality of first blades are arranged around the hub at intervals. Each of the plurality of first blades passes through the outer ring, extends inward from the outer ring, and is connected to the hub. The plurality of second blades are arranged around the hub at intervals. Each of the plurality of second blades passes through the outer ring. At least one of the plurality of second blades is disposed between the plurality of first blades. A length of each of the plurality of second blades is between 10% and 45% of a length of each of the plurality of first blades.

Impeller

A centrifugal fan is disclosed and includes a housing, a fan wheel, a first throat portion and a second throat portion. The housing includes a lower cover connected to an upper cover through a peripheral wall to form an accommodation space and an outlet. The upper cover includes an inlet communicated with the outlet. The fan wheel is disposed on the lower cover and accommodated in the accommodation space. The fan wheel is rotated along a rotation direction. The first throat portion is disposed adjacent to a lateral end of the outlet and protrudes from the peripheral wall toward the accommodation space. The second throat portion is disposed adjacent to another lateral end of the outlet, and protrudes from the peripheral wall toward the accommodation space. When the fan wheel is rotated along the rotational direction, an airflow is guided from the first throat portion to the second throat portion.

Centrifugal fan

A centrifugal fan includes an impeller, a motor and a fan frame. The motor is connected with the impeller and configured to drive the impeller. The fan frame includes a base plate, a top plate, a sidewall and air deflectors. The impeller is disposed between the base plate and the top plate. The sidewall is disposed on the base plate between the base plate and the top plate. A flow channel is between the impeller and the sidewall. The air deflectors are directly connected to the base plate and the top plate, and disposed toward an air outlet and sequentially at different radial positions outwardly from the sidewall along a forward circumferential direction toward an air outlet with respect to the impeller to sequentially expand the flow channel outwardly in a radial direction at different circumferential positions along the forward circumferential direction with respect to the impeller. The airflow entry tunnels are formed by the air deflectors between the base plate and the top plate.

Centrifugal fan comprising a sidewall and plurality of air deflectors forming a plurality of airflow entry tunnels to sequentially expand a flow channel outwardly in a radial direction

A fan includes a hub, a plurality of blades, and a heat dissipation module. The blades surround the hub. The heat dissipation module includes a plurality of fins. The fins are disposed around the hub with respect to the blades. The end face of each fin facing the blades includes a noise reduction structure. The noise reduction structure is an inclined plane.

Growing community of inventors

Taoyuan, Taiwan

Ya-Ting Chang