PROBLEM TO BE SOLVED: To achieve a fluid injection method for jetting a fluid in the best fluid injection condition in an easy way.SOLUTION: In the fluid injection method related to a fluid injection device 1, a pulsating flow generating part 20 jets the fluid from a fluid injection opening 96 in a pulsating fashion by changing a volume of a pressure chamber 80 by a piezoelectric element 30 and a diaphragm 40, a pump 10 supplies the fluid to the pulsating flow generating part 20, a detector 11 detects the fluid supply flow amount to be supplied, and a frequency to change the volume of the pressure chamber 80 is controlled to be proportional to a fluid supply flow amount.COPYRIGHT: (C)2012,JPO&INPIT【課題】容易な方法で最適な流体噴射条件の流体を噴射する流体噴射方法を実現する。【解決手段】流体噴射装置1に係る流体噴射方法は、圧力室80の容積を圧電素子30及びダイアフラム40により変化させて流体噴射開口部96から流体をパルス状に噴射する脈流発生部20と、脈流発生部20に流体を供給するポンプ10と、が備えられ、かつ、供給される流体供給流量を検出する検出器11を有し、圧力室80の容積を変化させる周波数を流体供給流量に比例するように制御する。【選択図】図6
