GRINDING TREATMENT DEVICE

摘要

PROBLEM TO BE SOLVED: To enhance the sound pressure of the information sound from a sound source having a controller built therein in the grinding treatment device installed in a kitchen. SOLUTION: A recessed part is provided to a controller body having the sound source built therein and the length of the recessed part is set to 1/4 the wavelength of the sound source to most efficiently raise the sound pressure. COPYRIGHT: (C)2011,JPO&INPIT