Acoustic wave drying system

摘要

An acoustic wave drying system for drying a material using an acoustic resonant chamber that imparts acoustic energy to transiting air received from an airflow source. The acoustic resonant chamber includes a primary air channel having side surfaces connecting an air inlet and an air outlet, the primary air channel having a primary air channel length between the air inlet and the air outlet. One or more secondary closed-end resonant chambers are formed into side surfaces of the primary air channel. An air impingement airstream containing acoustic energy exits the air outlet and impinges on the material.

主权项

1. An acoustic wave drying system for drying a material, comprising:
an airflow source; an acoustic resonant chamber that imparts acoustic energy to air flowing through the acoustic resonant chamber including:
an air inlet for receiving air from the airflow source;an air outlet for directing air onto the material which is spaced apart from the outlet by a gap distance;a primary air channel having side surfaces connecting the air inlet and the air outlet, the primary air channel having a primary air channel length between the air inlet and the air outlet; andone or more secondary closed-end resonant chambers formed into a side surface of the primary air channel, the secondary closed-end resonant chambers having side surfaces and secondary resonant chamber lengths; wherein an acoustic pressure provided at a surface of the material is at least 125 dB-SPL, and wherein the air directed onto the material impinges on the surface of the material with an air velocity of no more than 40 m/s.