The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 05, 2025
Filed:
Sep. 28, 2023
Murata Manufacturing Co., Ltd., Kyoto, JP;
Kenjiro Okaguchi, Kyoto, JP;
MURATA MANUFACTURING CO., LTD., Kyoto, JP;
Abstract
The present disclosure provides a fluid control device and an output adjustment method with which the output of a pump can be easily adjusted even if an atmospheric pressure changes. A pump unit includes a first flow path, a u piezoelectric pump, a d piezoelectric pump, a second flow path, a third flow path, a control circuit capable of controlling driving of the u piezoelectric pump and the d piezoelectric pump, and a current sensor for detecting respective currents of the u piezoelectric pump and the d piezoelectric pump. The control circuit is capable of adjusting at least one of the output of the u piezoelectric pump and the output of the d piezoelectric pump on the basis of a difference (Iu−Id) between a current Iu of the u piezoelectric pump and a current Id of the d piezoelectric pump detected by the current sensor.