Unlock instant, AI-driven research and patent intelligence for your innovation.

Ultrasonic vacuum cleaner and method based on piezoelectric bimorph cantilever beam structure

A piezoelectric bimorph and cantilever beam technology, which is applied in the installation of vacuum cleaners, electrical equipment, and the use of vibration fluids, etc., can solve the problems of compactness, light weight and energy utilization of vacuum cleaners, which are difficult to be further improved.

Active Publication Date: 2011-12-21
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the need to use rotating parts and drive a large amount of air flow, it is difficult to further improve the traditional vacuum cleaner in terms of compactness, light weight and energy utilization

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ultrasonic vacuum cleaner and method based on piezoelectric bimorph cantilever beam structure
  • Ultrasonic vacuum cleaner and method based on piezoelectric bimorph cantilever beam structure
  • Ultrasonic vacuum cleaner and method based on piezoelectric bimorph cantilever beam structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The structure of the first embodiment is as follows figure 1 shown.

[0018] Each wall of the hexahedral cavity of the ultrasonic vacuum cleaner is composed of metal thin copper plates with a thickness of 0.5mm; the rectangular cavity of the ultrasonic vacuum cleaner is 100mm long, 30mm wide and 30mm high, with a piezoelectric bimorph cantilever beam; The size of the k31 modal piezoelectric sheet is 20mm (cantilever width direction) × 15.3mm (cantilever beam length direction) × 2mm (thickness), the material is FUJI C203, and the size of the metal sheet in the piezoelectric bimorph cantilever beam is 28mm (width direction of the cantilever beam) × 27mm (length direction of the cantilever beam) × 0.1mm (thickness); the root 8 of the piezoelectric bimorph cantilever beam is fixed on the top surface 9 of the vacuum cleaner; near the end 5 of the piezoelectric bimorph cantilever beam, There is a suction port 4, the size of which is 30mm (the length direction...

Embodiment 2

[0020] The structure of the second embodiment is as follows figure 2 shown.

[0021] Three piezoelectric bimorph structures with the same size and performance are arranged in the cavity of the ultrasonic cleaner in the first embodiment, and the size and performance of these piezoelectric bimorph structures are the same as those of the piezoelectric bimorph structure in the first embodiment. The cavity of the ultrasonic cleaner is divided into 4 sub-cavities with the same length by the 3 piezoelectric bimorphs in the longitudinal direction. The driving voltage amplitude of the piezoelectric bimorph is 75Vrms and the frequency is 100kHz. When the ultrasonic cleaner is working, the piezoelectric bimorph is in a resonance state.

[0022] The vacuuming effect of the above ultrasonic vacuum cleaner was experimentally verified by using mint seeds, saltwater shrimp and flour. The average radius, density and mass of a single particle of mint seeds are 0.26mm...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to an ultrasonic dust collector based on a piezoelectric double-wafer cantilever beam structure and a method of the ultrasonic dust collector, which belong to the technical field of utilization of ultrasonic waves. The ultrasonic dust collector comprises an ultrasonic dust collector cavity (1) consisting of a top surface (9), a bottom surface (10) and a side surface, and at least one group of double-wafer cantilever beams, wherein each group of double-wafer cantilever beams consist of a metal sheet (3) which is fixed on the top surface (9) and piezoelectric wafers (2) which are attached to the two sides of the metal sheet respectively; all the groups of double-wafer cantilever beams are parallel to one another and have the same resonance frequency or extremely approximate resonance frequencies; and a dust collection opening (4) is formed on the bottom surface (10). An ultrasonic near field generated on the end parts of the piezoelectric double-wafer cantilever beams which are arranged above the dust collection opening is used for sucking dust near the dust collection opening into the cavity. The ultrasonic dust collector has the advantages of compact structure, light weight, small volume and high energy utilization rate; and the ultrasonic waves near the dust collection opening have a sterilization effect on a dedusted surface.

Description

technical field [0001] The present invention relates to a technology for vacuuming dust by using near-field ultrasound. Background technique [0002] Conventional vacuum cleaners use a rotating electromagnetic motor to drive an air pump to form a vacuum or cyclone to suck up dust. Due to the need to use rotating parts and drive a large amount of air flow, it is difficult for traditional vacuum cleaners to be further improved in terms of compactness, light weight and energy efficiency. To solve these problems, novel vacuuming technologies must be used that are compact, have no rotating parts, and do not need to drive large amounts of air. SUMMARY OF THE INVENTION [0003] The invention provides an ultrasonic vacuum cleaner based on a piezoelectric bimorph cantilever beam structure and a method thereof, which has no rotating parts, does not need to drive a large amount of air to flow, and has the advantages of compact structure, light weight and high energy utilization rate...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): A47L9/28A47L9/00B06B1/06
Inventor 胡俊辉
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS