Stirrer having recesses formed inside container

Patent metadata

Field	Value
Publication number	US-9707526-B2
Application number	US-201414438806-A
Country	US
Kind code	B2
Filing date	May 12, 2014
Priority date	May 10, 2013
Publication date	Jul 18, 2017
Grant date	Jul 18, 2017

Abstract

The present invention relates to a stirrer having grooves formed on the inside of a container in order to improve the degree of mixing, and the stirrer which is provided comprises: a plurality of projections formed on the inner surface of a stirrer container; and a plurality of grooves formed between the plurality of projections.

First claim

The invention claimed is:

1. A stirrer, comprising;
a stirrer container including a plurality of projections formed on an inner surface of the stirrer container;
a plurality of grooves, each of grooves being formed between the projections; and
a propeller or an impeller positioned at a lower portion of the stirrer container,
wherein the plurality of projections are spirally arranged,
wherein each of the plurality of projections has a semi-circular cross-sectional shape,
wherein each of the plurality of projections is independently inclined with respect to a vertical plane of the container,
wherein an angle between each of the plurality of projections and the vertical plane of the container is 10 to 70°,
wherein a width of each of the plurality of projections is independently 0.5 to 40% of a diameter of the container,
wherein a distance between the projections is independently 1 to 160% of a diameter of the container,
wherein a width of the plurality of grooves is 50 to 1000% of a width of the plurality of projections,
wherein a height of the projections gradually increases from a first portion adjacent to the propeller or the impeller toward a second portion opposite to the first portion, and
wherein a number of the projections gradually increases or a distance between the projections gradually decreases from the first portion toward the second portion.

2. The stirrer of claim 1 , wherein a length of each of the plurality of projections is independently 75 to 500% of a length of the container.

3. The stirrer of claim 1 , wherein a height of each of the plurality of projections is independently 0.5 to 20% of a diameter of the container.

4. The stirrer of claim 1 , wherein the number of the projections is 2 to 100.

5. The stirrer of claim 1 , wherein the projections are formed into multiple stages along the vertical direction, the horizontal direction, or both directions of the container, and the stages of the projections are spaced from each other.

6. The stirrer of claim 5 , wherein the number of stages is 2 to 10.

7. The stirrer of claim 5 , wherein at least one of the number, the shape, the angle, the length, the height, the width of the projections, and the distance between the projections of one stage differs from that of another stage.

8. A method for mixing substances using the stirrer according to claim 1 .

Assignees

• Lg Chemical Ltd

Inventors

• Song Young Soo
• Hong Yu Shik
• Choi Jun Won
• Im Ye Hoon

Classifications

• B01F15/00883

  Operations & Transport · mapped topic

• B01F7/183

  Operations & Transport · mapped topic

• B01F7/00816 Primary

  Operations & Transport · mapped topic

• B01F27/911

  forcing the material through orifices or slits, e.g. in a stationary part · CPC title

• B01F27/91 Primary

  with propellers · CPC title