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公开(公告)号：US11208995B2
公开(公告)日：2021-12-28
申请号：US16834204
申请日：2020-03-30
Applicant: MICROJET TECHNOLOGY CO., LTD.
Inventor： Hao-Jan Mou , Shen-Wen Chen , Shih-Chang Chen , Chi-Feng Huang , Yung-Lung Han , Wei-Ming Lee , Chun-Yi Kuo
Abstract: A micro piezoelectric pump module includes a microprocessor, a driving element, and a piezoelectric pump. The driving element is connected to the microprocessor to receive a modulating signal and a control signal and to output a driving signal. The driving signal includes a driving voltage and a driving frequency. The piezoelectric pump is actuated by the driving signal, and the piezoelectric pump is set to be actuated at an actuation frequency and be applied with an actuation voltage value. The microprocessor drives the driving element to output the driving voltage having an initial voltage value at the driving frequency to the piezoelectric pump, and adjusts the driving frequency to the same with the actuation frequency. After the driving frequency is adjusted to reach the actuation frequency, the microprocessor drives the driving element to gradually increase the initial voltage value to reach the actuation voltage value.
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公开(公告)号：US11286922B2
公开(公告)日：2022-03-29
申请号：US16677942
申请日：2019-11-08
Applicant: Microjet Technology Co., Ltd.
Inventor： Hao-Jan Mou , Shen-Wen Chen , Shih-Chang Chen , Chun-Hung Liao , Chi-Feng Huang , Yung-Lung Han , Chun-Yi Kuo
Abstract: A miniature piezoelectric pump module is provided and includes a piezoelectric pump, a microprocessor, a driving component and a feedback circuit. The piezoelectric pump includes two electrodes and a piezoelectric element and has the best efficiency while operating under an ideal operating voltage. The driving component is electrically connected to the microprocessor and the piezoelectric pump and includes a transform element and an inverting element. The transform element outputs an effective operating voltage to the piezoelectric pump. The inverting element controls the two electrodes to receive the effective operating voltage or to be grounded. The piezoelectric element is subjected to deformation for transporting fluid due to piezoelectric effect. The feedback circuit generates a feedback voltage according to the effective operating voltage. The microprocessor adjusts the modulation signal according to the feedback voltage for adjusting the effective operating voltage outputted by the transform element to approach the ideal operating voltage.
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公开(公告)号：US20200318633A1
公开(公告)日：2020-10-08
申请号：US16834204
申请日：2020-03-30
Applicant: MICROJET TECHNOLOGY CO., LTD.
Inventor： Hao-Jan Mou , Shen-Wen Chen , Shih-Chang Chen , Chi-Feng Huang , Yung-Lung Han , Wei-Ming Lee , Chun-Yi Kuo
Abstract: A micro piezoelectric pump module includes a microprocessor, a driving element, and a piezoelectric pump. The driving element is connected to the microprocessor to receive a modulating signal and a control signal and to output a driving signal. The driving signal includes a driving voltage and a driving frequency. The piezoelectric pump is actuated by the driving signal, and the piezoelectric pump is set to be actuated at an actuation frequency and be applied with an actuation voltage value. The microprocessor drives the driving element to output the driving voltage having an initial voltage value at the driving frequency to the piezoelectric pump, and adjusts the driving frequency to the same with the actuation frequency. After the driving frequency is adjusted to reach the actuation frequency, the microprocessor drives the driving element to gradually increase the initial voltage value to reach the actuation voltage value.
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公开(公告)号：US20200149524A1
公开(公告)日：2020-05-14
申请号：US16677942
申请日：2019-11-08
Applicant: Microjet Technology Co., Ltd.
Inventor： Hao-Jan Mou , Shen-Wen Chen , Shih-Chang Chen , Chun-Hung Liao , Chi-Feng Huang , Yung-Lung Han , Chun-Yi Kuo
Abstract: A miniature piezoelectric pump module is provided and includes a piezoelectric pump, a microprocessor, a driving component and a feedback circuit. The piezoelectric pump includes two electrodes and a piezoelectric element and has the best efficiency while operating under an ideal operating voltage. The driving component is electrically connected to the microprocessor and the piezoelectric pump and includes a transform element and an inverting element. The transform element outputs an effective operating voltage to the piezoelectric pump. The inverting element controls the two electrodes to receive the effective operating voltage or to be grounded. The piezoelectric element is subjected to deformation for transporting fluid due to piezoelectric effect. The feedback circuit generates a feedback voltage according to the effective operating voltage. The microprocessor adjusts the modulation signal according to the feedback voltage for adjusting the effective operating voltage outputted by the transform element to approach the ideal operating voltage.
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