SMD Sandwich Bending Vibration Compound Vibration Active Water Jet Propulsion Device and Its Driving Method
A technology of compound excitation and water jet propulsion, which is applied to machines/engines, liquid variable capacity machinery, pumps with flexible working elements, etc. The effect of high power density and broad application prospects
Active Publication Date: 2019-05-31
CHANGCHUN UNIV OF TECH
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Problems solved by technology
[0003] In order to solve the technical problems of small driving force and low power density in current piezoelectric water jet propulsion devices, the present invention discloses a patch sandwich bending vibration composite excitation active water jet propulsion device and its driving method
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[0029] Specific implementation mode one: combine Figure 1 to Figure 20This embodiment will be described. This embodiment provides a specific implementation of a patch sandwich bending vibration composite excitation active water jet propulsion device. The patch sandwich bending vibration composite excitation active water jet propulsion device is mainly composed of a valve single wafer 1, a valve metal substrate 2, an end cover 3, a supporting rubber ring 4, a sealing ring 5, a cavity 6, and fastening bolts. 7. The drive assembly 8 for the pump, the enlarged diaphragm 9 , the clamping block 10 , the metal base plate 11 for the pump, the front end cover 12 and the fastening screw 13 are composed.
[0030] The single wafer 1 for the valve is d 33 A circular piezoelectric ceramic sheet in the excitation mode is polarized along the thickness direction. The end surface of the single chip 1 for the valve is connected to the metal substrate 2 for the valve through epoxy resin glue, ...
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The invention discloses a surface mount type sandwich type bending vibration complex excitation active water spraying propulsion device and a driving method thereof. The problems that a current piezoelectric water spraying propulsion device is small in driving force, low in power density and the like are solved. The surface mount type sandwich type bending vibration complex excitation active water spraying propulsion device comprises single crystal wafers for valves, metal base plates for valves, end covers, supporting rubber rings, sealing rings, cavities, fastening bolts, a pump cavity driving assembly, an amplification membrane, a clamping block, a metal base plate for pumps, a front end cover and fastening screws; and each cavity is provided with a valve cavity water inlet, a pump cavity water inlet and a pump cavity water outlet, each valve cavity water inlet is provided with a driving valve base for valves, each pump cavity water inlet is provided with a driving valve base for pumps, and a hydrophobic structure is arranged on the inner wall of each pump cavity water outlet. Electric signals are applied to the single crystal wafers for the valves and the pump cavity driving assembly, the single crystal wafers for the valves and the pump cavity driving assembly are stimulated to generate stretching deformation and centrifugal force, the volumes of the valve cavities and the pump cavities are alternatively changed, and flowing in and spraying out of fluid are achieved; and under the counter-acting force of sprayed water, propulsion of the device is achieved. The surface mount type sandwich type bending vibration complex excitation active water spraying propulsion device and the driving method have the beneficial effects of being large in driving force, high in power density and the like, and have wide application prospects in the field of trace injection, military surveying and the like.
Description
technical field [0001] The invention relates to a patch sandwich bending vibration composite excitation active water jet propulsion device and a driving method thereof, belonging to the technical field of water jet propulsion. Background technique [0002] The water-jet propulsion device is a micro-propulsion device that uses the reaction force of the water jetted by the propulsion pump to generate propulsion, and then realizes the motion output. As the power source of the propulsion device, the pump plays an important role in the water jet propulsion technology. At present, the propulsion pumps used in the water jet propulsion device are mainly axial flow pumps, mixed flow pumps and centrifugal pumps. This kind of power pump has low power density, resistance Disadvantages such as poor interference ability and complex structure make it difficult for water jet propulsion technology to meet the application requirements in the fields of robots, small detection, and precision in...
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IPC IPC(8): F04B43/04
Inventor 何丽鹏高智陈栋
Owner CHANGCHUN UNIV OF TECH