A Novel Piezoelectric Pump Without Diaphragm Driven by Piezoelectric Ceramics
A piezoelectric ceramic driving and piezoelectric driving technology, which is applied to the components, pumps, and pump components of the pumping device for elastic fluids, can solve the problems of poor reverse flow stop performance, difficult assembly, and complex structure, etc. Achieve stable performance, compact and simple structure, and good output performance.
Active Publication Date: 2021-07-16
HARBIN INST OF TECH
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Problems solved by technology
Compared with valved piezoelectric pumps of the same scale, valveless piezoelectric pumps have disadvantages such as low flow rate, small back pressure, low efficiency, and poor reverse flow stop performance, while valved piezoelectric pumps have complex structures and difficult assembly , low reliability and other defects
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[0041] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0042] The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0043] Such as Figure 1-Figure 9 As shown, a new type of piezoelectric pump without diaphragm driven by piezoelectric ceramics includes a hydraulic circulation system on the upper part and a piezoelectric drive system on the lower part. The hydraulic circulation system and the piezoelectric drive system are fixedly connected to form Sealed cavity structure;
[0044] The piezoelectric drive system includes a piezoelectric ceramic 2 arranged in the piezoelectric drive system housing 1, a piezoelectric drive system sealing fixture 4 and a drive piston 5, and the piezoelectric ceramic 2 is formed from the bottom of the piezoelectric drive system housing 1 After extending in, it is fixedly...
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The invention provides a novel piezoelectric pump without diaphragm driven by piezoelectric ceramics, which includes a hydraulic circulation system arranged on the upper part and a piezoelectric drive system arranged on the lower part, and the hydraulic circulation system and the piezoelectric drive system are fixedly connected to form a seal The cavity structure, the piezoelectric drive system includes piezoelectric ceramics arranged in the piezoelectric drive system casing, the piezoelectric drive system sealing fixture and the driving piston, and the hydraulic circulation system includes the inflow cavity assembly and the outlet cavity assembly arranged in the hydraulic circulation system casing. Flow chamber components. The present invention adopts a single-valve three-chamber design, and an energy-gathering conical groove is processed on the shell of the hydraulic circulation system to form a vortex, forming a favorable flow, forming an extra suction force at the outlet of the end of the long cylindrical liquid outlet pipe, and optimizing the structure to reduce the weight of the driving piston And minus the sealing diaphragm of the prior art, which is different from most of the prior art of piezoelectric pumps, its advantages are more compact structure, lighter weight, more stable performance, better output performance and higher efficiency.
Description
technical field [0001] The invention belongs to the technical field of piezoelectric pumps, and in particular relates to a novel diaphragm-free piezoelectric pump driven by piezoelectric ceramics. Background technique [0002] The rapid development of smart materials provides a new way to design and develop small actuators with excellent performance. The principle of the piezoelectric pump designed based on piezoelectric ceramics is to fill the designed pump cavity with fluid, and then energize the fluid to circulate and generate pressure and flow output, and finally convert it into a certain driving force to achieve the driving effect. Due to its small size, large energy and high reliability, it has broad application prospects in aerospace, mechanical construction, precision medicine and other fields. Piezoelectric ceramic hydraulic pump belongs to the category of hydraulic transmission, which is a new discipline developed in recent decades. The drive of the device through...
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IPC IPC(8): F04B17/00F04B53/10F04B53/14
CPCF04B17/003F04B53/10F04B53/14
Inventor 孙健冷劲松刘彦菊周宝王维昊
Owner HARBIN INST OF TECH