Drag-reducing valveless piezoelectric pump with drag-reducing fluids

A valveless piezoelectric pump and bluff body technology, used in pumps, liquid varactor machines, pumps with flexible working elements, etc. problems, to achieve the effect of reducing the volume of the pump body, the structure is simple, and the structure and process are simplified

Inactive Publication Date: 2013-02-06
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In addition, most of the above-mentioned valveless piezoelectric pumps can only pump a single fluid, and cannot realize the pumping of mixed fluids, which undoubtedly limits the application range of valveless piezoelectric pumps.

Method used

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  • Drag-reducing valveless piezoelectric pump with drag-reducing fluids
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  • Drag-reducing valveless piezoelectric pump with drag-reducing fluids

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Embodiment Construction

[0050] Such as figure 1 , figure 2 As shown, the baffle and flow resistance valveless piezoelectric pump of this embodiment includes a pump body side wall, a pump upper cover, and a pump base 2. The pump body side wall, pump upper cover, and pump base 2 collectively surround the sealed pump cavity 1 , The piezoelectric vibrator 3 is arranged in the pump cavity 1, and the side wall of the pump is provided with a first direct current tube 6 and a second direct current tube 6'that communicate the pump chamber 1 with the outside, the first direct current tube 6. The second direct current tube 6'is symmetrically arranged on the side wall of the pump; the piezoelectric vibrator 3 is arranged parallel to the pump base 2 and divides the pump cavity 1 into two independent areas, on the pump base 2 At least one bluff body 4 is provided, and the bluff body 4 can surround it and be perpendicular to the pump base 2 The center axis of the surface is rotatably arranged on the pump base 2. T...

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Abstract

The invention discloses a drag-reducing valveless piezoelectric pump with drag-reducing fluids. The drag-reducing valveless piezoelectric pump comprises a side wall of a pump body, an upper pump cover and a pump base which define a pump cavity, wherein a piezoelectric vibrator is arranged in the pump cavity; a first direct flow pipe and a second direct flow pipe are arranged on the side wall of the pump body and are communicated with the pump cavity and the outside; and the at least one drag-reducing fluid is arranged on the pump base. In general, the piezoelectric vibrator is parallel to the pump base and divides the pump cavity into two independent units, and the number of the drag-reducing fluids is determined according to the size of the pump base. The drag-reducing valveless piezoelectric pump with the drag-reducing fluids has a large output quantity and an adjustable flow rate, can be used for realizing tiny flow output and large flow output, and has a function of pumping the mixed fluids besides a function of pumping a single fluid of the conventional valveless piezoelectric pump, so that the application range of the valveless piezoelectric pump is broadened.

Description

[0001] technical field [0002] The invention relates to a valveless piezoelectric pump, in particular to a valveless piezoelectric pump using a flow blocking object to form a flow resistance difference, and belongs to the field of fluid machinery. Background technique [0003] Piezoelectric pumps are a new type of fluid actuator. Compared with traditional pumps, piezoelectric pumps do not require an additional drive motor, but use the inverse piezoelectric effect of the smaller piezoelectric ceramics to deform the piezoelectric vibrator, and then the volume change of the pump chamber is generated by the deformation to achieve fluid output. [0004] The valveless piezoelectric pump mainly utilizes the difference in the fluid resistance of the special structure of the pipeline or the pump chamber to realize the unidirectional flow of the fluid. Valveless piezoelectric pumps have the advantages of simple structure, easy miniaturization, low energy consumption, and no electrom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B43/04
Inventor 纪晶张建辉赵淳生
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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