Mist-generating device

Patent metadata

Field	Value
Publication number	US-11964294-B2
Application number	US-201917258005-A
Country	US
Kind code	B2
Filing date	Jun 25, 2019
Priority date	Jul 10, 2018
Publication date	Apr 23, 2024
Grant date	Apr 23, 2024

Abstract

A mist-generating device includes: a droplet generating unit that generates, in a third liquid, a functional droplet including a first liquid that is spherical and a second liquid that covers an entirety of the first liquid and has a volatility lower than a volatility of the first liquid; and a mist-generating unit that generates a multilayer mist obtained by atomizing the third liquid containing the functional droplet.

First claim

The invention claimed is:

1. A mist-generating device, comprising:
a droplet generating unit configured to generate, in a third liquid, a functional droplet including a first liquid that is spherical and a second liquid that covers an entirety of the first liquid and has a volatility lower than a volatility of the first liquid; and
a mist-generating unit configured to generate a multilayer mist obtained by atomizing the third liquid containing the functional droplet into a mist,
wherein the droplet generating unit is a microchannel chip including:
a first liquid channel through which the first liquid passes;
a second liquid channel through which the second liquid passes;
a mixing channel connected to the first liquid channel and the second liquid channel, for covering the entirety of the first liquid with the second liquid; and
a third liquid channel connected to the mixing channel, for covering an entirety of the first liquid and the second liquid with the third liquid.

2. The mist-generating device according to claim 1 , further comprising:
a supplying unit configured to supply the third liquid containing the functional droplet generated by the droplet generating unit to the mist-generating unit.

3. The mist-generating device according to claim 1 ,
wherein the second liquid is one of a biomaterial and a biocompatible material.

4. The mist-generating device according to claim 1 ,
wherein one of the first liquid and the second liquid is oily and the other of the first liquid and the second liquid is aqueous.

5. The mist-generating device according to claim 1 ,
wherein the third liquid has a volatility higher than the volatility of the second liquid.

6. The mist-generating device according to claim 1 ,
wherein the functional droplet has a particle size of at most 10 μm.

7. The mist-generating device according to claim 1 ,
wherein the mist-generating unit is an ultrasonic vibration generator configured to generate the multilayer mist by atomizing the third liquid containing the functional droplet by applying an ultrasonic vibration to the third liquid containing the functional droplet.

8. The mist-generating device according to claim 1 , further comprising:
a charging electrode for charging the multilayer mist.

9. The mist-generating device according to claim 1 ,
wherein the mist-generating unit includes:
a nozzle configured to discharge the third liquid containing the functional droplet; and
a first electrode disposed opposite to the nozzle and configured to generate the multilayer mist by atomizing the third liquid containing the functional droplet by applying a voltage to the third liquid containing the functional droplet discharged from the nozzle.

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Ueda Mitsuhiko
• Kiriyama Tatsuya
• Tachibana Hiroaki
• Shibuya Shogo

Classifications

• B05B5/057 Primary

  Arrangements for discharging liquids or other fluent material without using a gun or nozzle · CPC title

• A61L9/14

  using sprayed or atomised substances {including air-liquid contact processes} · CPC title

• B01J13/046

  combined with gelification or coagulation · CPC title

• B05B5/0255 Primary

  spraying and depositing by electrostatic forces only · CPC title

• B05B7/061

  with several liquid outlets discharging one or several liquids · CPC title