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Separable membrane improvements

A kind of porous membrane, a part of the technology, applied in the field of droplet production equipment, can solve the problem of easy attenuation and other problems

Active Publication Date: 2014-04-30
THE TECHNOLOGY PARTNERSHIP PLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This setup still has several disadvantages: specifically, the vibrating surface needs to be mounted near the membrane, but not in contact, for efficient droplet generation, and not all of the liquid in the container can be transferred (due to the need for the liquid to transmit the pressure wave to porous membrane)
These preferred requirements are especially challenging for bending mode actuator devices because they are more prone to decay

Method used

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  • Separable membrane improvements
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Examples

Experimental program
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Embodiment Construction

[0040] figure 1 (a) shows an axisymmetric droplet production device known in the art of longitudinal type 1 . The actuator comprises an active component 11 combined with a deformable passive component 12 designed such that it amplifies the tension of the active component at resonance. A perforated membrane 13 is bonded to the actuator and the device has a general axis of symmetry 10 . Expansion and contraction of the actuator 14 causes an amplified movement 15 of the apertured membrane in a generally parallel direction. Depending on the design, the membrane itself can vibrate all in phase, with motion of one wavelength across its radius (ie, the central region can be out of phase with the edges) or motion of more than one wavelength. figure 2 (a) Shows details of the engagement of the actuator with the membrane associated with the device. The membrane is permanently attached to the actuator by means 16 such as adhesive bonding, laser welding, brazing, welding, and the lik...

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PUM

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Abstract

A liquid droplet production apparatus comprising a perforate membrane (33, 39), a means for supplying liquid to one side of the membrane, an actuator (31) for vibrating the membrane said vibration causing liquid droplets to be ejected from the other side of the membrane, in which magnetic force is used to connect the actuator to the membrane so that the vibration can be transmitted.

Description

technical field [0001] The present invention relates to electron spraying devices in which a vibrating porous membrane is used to generate droplets; in particular, the invention relates to how such devices can be made more useful by enabling separation of the vibrating membrane from its drive element. [0002] According to a first aspect of the present invention, the present invention provides a droplet production device comprising: a perforated membrane; a module for supplying liquid to one side of said membrane; a module for vibrating said membrane The vibrations cause droplets to be ejected from the other side of the membrane; wherein a magnetic force is used to connect the actuator to the membrane, enabling transmission of the vibrations. Background technique [0003] Introduction and state-of-the-art on separable membrane technology [0004] Electronebulizers, which use ultrasonic vibrations to generate liquid droplets, are well known in the art and have found use in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05B17/06
CPCB05B17/0646A61M11/005
Inventor 丹尼尔·克赖顿罗伯特·戈登·莫里斯·塞尔比戴维·马丁·普利
Owner THE TECHNOLOGY PARTNERSHIP PLC
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