Title:
OUTDOORS PORTABLE PIEZOELECTRIC CERAMIC AIR PUMP
Document Type and Number:
WIPO Patent Application WO/2023/206175
Kind Code:
A1
Abstract:
An outdoors portable piezoelectric ceramic air pump, comprising a DC-AC inverter and a piezoelectric ceramic air pump body. An output end of the DC-AC inverter is used for electrically connecting to a piezoelectric ceramic piece in the piezoelectric ceramic air pump body to provide an alternating current for the piezoelectric ceramic piece, wherein the alternating current drives the piezoelectric ceramic piece to vibrate. The DC-AC inverter comprises an MCU control circuit, an inverter bridge circuit, and a step-up transformer; the MCU control circuit is electrically connected to an input end of the inverter bridge circuit, and an output end of the inverter bridge circuit is electrically connected to an input end of the step-up transformer; and the MCU control circuit outputs a pair of PWM pulse control signals having opposite polarities to the inverter bridge circuit, wherein the pair of PWM pulse control signals having opposite polarities are used for controlling the frequency and amplitude of the alternating current output by the inverter bridge circuit. The built-in DC-AC inverter enables the piezoelectric ceramic air pump to be suitable for a power supply for supplying a direct current, thereby expanding application scenarios of the piezoelectric ceramic air pump, so that the piezoelectric ceramic air pump is not limited to alternating current supply scenarios.
Inventors:
LI CHUNYUN (CN)
Application Number:
PCT/CN2022/089674
Publication Date:
November 02, 2023
Filing Date:
April 27, 2022
Export Citation:
Assignee:
SHENZHEN XINGRISHENG IND CO (CN)
International Classes:
H02J9/06; H02M7/5387; H02N2/02; H02N2/06
Foreign References:
| CN101588141A | 2009-11-25 | |||
| CN201238270Y | 2009-05-13 | |||
| JPH01255480A | 1989-10-12 | |||
| JP2005142136A | 2005-06-02 | |||
| JP2001273995A | 2001-10-05 | |||
| JP2006042440A | 2006-02-09 | |||
| RU2741729C1 | 2021-01-28 | |||
| CN101330262A | 2008-12-24 |
Attorney, Agent or Firm:
SHENZHEN RUIZHI PATENT AGENCY (CN)
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