초록 ▼

Mounted on the body of a fan blade is a micro-electro mechanical system which includes at least one thin silicon film forming an integrated circuit, and an actuator connected to the circuit for generating vibrations. If used as a noise-killing system, the actuator generates vibrations which offset (

Mounted on the body of a fan blade is a micro-electro mechanical system which includes at least one thin silicon film forming an integrated circuit, and an actuator connected to the circuit for generating vibrations. If used as a noise-killing system, the actuator generates vibrations which offset (reduce) unstable air flows along the blade body. If used in a heat exchanger to improve the heat exchange effect, the system generates vibrations which amplify the unstable air flow, e.g., to amplify turbulence and vortexes.

대표청구항 ▼

[ What is claimed is:] [1.] A fan blade including a blade body and a noise killing apparatus mounted on the blade body at a predetermined position thereon; the noise-killing apparatus comprising a micro-electro mechanical system including a thin silicon film chip disposed at the position and forming

[ What is claimed is:] [1.] A fan blade including a blade body and a noise killing apparatus mounted on the blade body at a predetermined position thereon; the noise-killing apparatus comprising a micro-electro mechanical system including a thin silicon film chip disposed at the position and forming: an integrated circuit, and an actuator disposed at the position and operated by the circuit for generating vibrations offsetting unstable air flow modes produced along the blade body.