Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A New Type of Piezoelectric Pump

A piezoelectric ceramic pump, a new type of technology, used in pumps, pumps with flexible working elements, liquid variable capacity machines, etc., can solve the problems of low efficiency, small deformation, low output flow, etc., to improve efficiency, The effect of increasing output flow and output pressure

Active Publication Date: 2018-02-06
SHANGHAI XURUN MEDICAL TECH CO LTD
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the deformation of the ceramic sheet fixed by the surrounding support must first overcome the limitation of the support on the deformation of the ceramic sheet, the energy required for the deformation movement is large and the deformation amount is small, so the output flow rate is low and the efficiency is not high.

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
  • A New Type of Piezoelectric Pump
  • A New Type of Piezoelectric Pump
  • A New Type of Piezoelectric Pump

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0013] Square or rectangular pump cavity, square or rectangular piezoelectric vibrator terminal fixed

[0014] figure 2 : 1 Lower housing 2 One-way sealing ring 3 Piezoelectric vibrator 4 One-way valve membrane 5 Upper housing

[0015] The pump casing is composed of upper and lower parts, and there is a square or rectangular groove in the middle of the upper and lower casings. The width of the piezoelectric vibrator piece is smaller than the width of the housing slot, and the length is greater than the length of the housing slot. The one-way sealing ring is sandwiched between the upper and lower housings, and the piezoelectric vibrator piece is located on one side of the one-way sealing ring and is in contact with the one-way sealing ring. The three edges of the piezoelectric vibrator piece maintain a certain gap with the side wall of the groove, and the other side is fixed on the side wall of the groove.

Embodiment approach 2

[0017] Square or rectangular pump cavity, fixed in the middle of square or rectangular piezoelectric ceramics

[0018] The pump casing is composed of upper and lower parts, and there is a square or rectangular groove in the middle of the upper and lower casings. There is a beam in the center of the groove for fixing the piezoelectric vibrator piece. The piezoelectric vibrator piece is smaller than the slot on the casing. The one-way sealing ring is sandwiched between the upper and lower housings, and the piezoelectric vibrator piece is located on one side of the one-way sealing ring and is in contact with the one-way sealing ring. A certain gap is maintained between the edge of the piezoelectric vibrator piece and the side wall of the slot.

[0019] image 3 : 1 Lower housing 2 One-way sealing ring 3 Piezoelectric vibrator 4 One-way valve membrane 5 Upper housing

[0020] 6 piezoelectric vibrator fixed beam

Embodiment approach 3

[0022] Circular pump cavity, circular piezoceramic disc, fixed elastic membrane seal at the midpoint

[0023] Figure 4 : 1 upper shell 2 piezoelectric vibrator 3 elastic sealing film 4 one-way valve film 5 lower shell

[0024] The pump casing is composed of upper and lower parts, and there is a circular cavity in the middle of the upper and lower casings. There is an elastic film between the upper and lower shells to divide the cavity into upper and lower parts. The edge of the film is corrugated so that the edge of the film can be fixed between the upper and lower shells and the film itself can vibrate. The piezoelectric vibrator piece is located on one side of the membrane, and its diameter is smaller than that of the cavity. Two one-way valves are arranged on the casing of the cavity on the other side, and the fluid directions are opposite.

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

Piezoelectric pump is a revolutionary product of micro pump manufacturing technology due to its simple structure, small size, light weight, low energy consumption, no noise, and no electromagnetic interference. However, since the deformation of the peripheral support and fixed ceramic sheet must first overcome the limitation of the support on the deformation of the ceramic sheet, the energy required for the deformation movement is large and the deformation is small, so the output flow rate is low and the efficiency is not high. The main purpose of the present invention is to design a new piezoceramic driven piezoceramic pump, to overcome the above-mentioned shortcomings in the work of the piezoelectric pump, and to achieve higher output flow and pressure with less energy. Its main features include that one end of the piezoelectric vibrator is fixed on the housing or the center is fixed, and the rest is suspended in the cavity to form a cantilever support. In this way, the front end of the piezoelectric vibrator can be greatly deflected and has a lower resonance frequency; the gap between the periphery of the piezoelectric vibrator and the housing is sealed with a one-way sealing ring to form a double-cavity pump or pressure pump. The elastic membrane structure can also be used to seal the periphery of the electric vibrator and the housing to form a typical single-cavity pump.

Description

Technical field [0001] The invention belongs to the field of microelectronic fluid machinery, and can be used for micro liquid or gas driven pumps in the technical fields of medical equipment, bioengineering, micro equipment, etc. Specifically, the piezoelectric vibrator is deformed by using the inverse piezoelectric effect of piezoelectric ceramics. A micropump manufacturing technology that realizes fluid output by changing the volume of the pump chamber through deformation. Background technique [0002] Piezoelectric pump is a revolutionary product of micro-pump manufacturing technology. Although its invention and development have only a history of more than 20 years, it can be used according to its simple structure, small size, light weight, low energy consumption, no noise, and no electromagnetic interference. Applied voltage or frequency controls the output of small flow, so it has been successfully applied in many fields. In 1978, W.J.Spenser of the Sandia National La...

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 Patents(China)
IPC IPC(8): F04B43/04
Inventor 邓肇达陈明晟席斌
Owner SHANGHAI XURUN MEDICAL TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com