Ultrafine bubble generating method, ultrafine bubble-containing liquid manufacturing apparatus and manufacturing method, and ultrafine bubble-containing liquid

Patent metadata

Field	Value
Publication number	US-11766685-B2
Application number	US-201816642432-A
Country	US
Kind code	B2
Filing date	Aug 29, 2018
Priority date	Aug 31, 2017
Publication date	Sep 26, 2023
Grant date	Sep 26, 2023

Abstract

Ultrafine bubbles with a diameter of less than 1.0 μm are generated in liquid by causing film boiling in liquid by means of a heater.

First claim

The invention claimed is:

1. An ultrafine bubble-containing liquid manufacturing apparatus, comprising:
a storage unit configured to store liquid in a position including a predetermined region; and
a heating unit configured to generate ultrafine bubbles smaller than 1.0 μm in diameter in the liquid by heating the liquid in the predetermined region and causing film boiling; and
a collector configured to collect the liquid containing the ultrafine bubbles.

2. The ultrafine bubble-containing liquid manufacturing apparatus according to claim 1 , wherein the heating unit includes a heating resistance portion.

3. The ultrafine bubble-containing liquid manufacturing apparatus according to claim 1 , further comprising a control unit configured to heat the heating unit intermittently to cause the film boiling intermittently.

4. The ultrafine bubble-containing liquid manufacturing apparatus according to claim 1 , further comprising a channel in which the liquid flows through the predetermined region.

5. The ultrafine bubble-containing liquid manufacturing apparatus according to claim 1 , further comprising a circulation channel configured to circulate the liquid through the predetermined region.

6. The ultrafine bubble-containing liquid manufacturing apparatus according to claim 1 , further comprising:
a pressure chamber including at least part of the predetermined region;
a supply channel for supplying the liquid to the pressure chamber; and
an ejection opening communicating with the pressure chamber,
wherein the liquid inside the pressure chamber is ejected from the ejection opening by energy of bubbles generated by the film boiling in the liquid.

7. The ultrafine bubble-containing liquid manufacturing apparatus according to claim 6 , wherein the collector is configured to collect the liquid ejected from the ejection opening.

8. The ultrafine bubble-containing liquid manufacturing apparatus according to claim 1 , further comprising an injection unit configured to inject gas into the liquid.

Assignees

• Canon Kk

Inventors

• Kubota Masahiko
• Takahashi Kenji
• Nakazawa Ikuo
• Yamada Akitoshi
• Tanahashi Nobuhisa
• Kinoshita Yoshio

Classifications

• H10W40/10

  Arrangements for heating · CPC title

• B05B7/1686 Primary

  involving vaporisation of the material to be sprayed or of an atomising-fluid-generating product · CPC title

• A01N25/02

  containing liquids as carriers, diluents or solvents · CPC title

• A61L2/183

  Ozone dissolved in a liquid · CPC title

• C02F1/02 Primary

  by heating (methods of steam generation F22B; preheating boiler feed-water or accumulating preheated boiler feed-water F22D) · CPC title