Combined-blade open flow path device and joined body thereof

Patent metadata

Field	Value
Publication number	US-10258982-B2
Application number	US-201515305467-A
Country	US
Kind code	B2
Filing date	Apr 22, 2015
Priority date	Apr 23, 2014
Publication date	Apr 16, 2019
Grant date	Apr 16, 2019

Abstract

A combined-blade open flow path device is a fluid flow path device where flow paths are adjacent to each other. The combined-blade open flow path device comprises a substrate configured to constitute a bottom portion of the flow paths; and blades erected on a surface of the substrate, the blades being configured to constitute side walls of the flow paths, wherein the blades are erected in groups, each of the groups extending from an upstream side to a downstream side in a flow direction of a fluid with a space between each of the blades in the flow direction of the fluid in each of the groups for making conduction of the fluid between the adjacent flow paths possible, and wherein one end of one of the flow paths is configured to be in contact with the fluid and is configured to make a flow of the fluid possible.

First claim

The invention claimed is:

1. A combined-blade open flow path device which is a fluid flow path device where multiple flow paths are adjacent to each other, the combined-blade open flow path device comprising:
a substrate configured to constitute a bottom portion of the flow paths; and
a plurality of blades erected on a surface of the substrate, the plurality of blades being configured to constitute side walls of the flow paths,
wherein:
the blades are erected in a plurality of groups, each of the groups extending from an upstream side to a downstream side in a flow direction of a fluid with a space between each of the blades in the flow direction of the fluid in each of the groups for making conduction of the fluid between the adjacent flow paths possible,
one end of one of the flow paths is configured to be in contact with the fluid and is configured to make a flow of the fluid possible,
the blades include first blades and second blades,
each of the first blades has a first length in the flow direction of the fluid,
each of the second blades has a second length in the flow direction of the fluid,
the second length is longer than the first length,
the first blades are in an outermost portion of the flow paths,
the second blades are in a central portion surrounded by the first blades.

2. The combined-blade open flow path device according to claim 1 , wherein the combined-blade open flow path device is configured to direct the flow of the fluid in a horizontal direction where a gravity force is not involved, or in a direction against the gravity force.

3. The combined-blade open flow path device according to claim 1 , wherein the space between each of the blades in the flow direction of the fluid in each of the groups is within a range from 0.1 μm to 100 μm in a micro flow-path device.

4. The combined-blade open flow path device according to claim 1 , further comprising a boundary portion where the first blades are positioned in the central portion at regular intervals.

5. The combined-blade open flow path device according to claim 1 , wherein each of the first length and the second length is within a range from 10 μm to 100 μm in a micro flow-path device.

6. The combined-blade open flow path device according to claim 1 , wherein a forming method of the plurality of blades includes photolithography.

7. The combined-blade open flow path device according to claim 1 , wherein hydrophilic or hydrophobic treatment is performed on the surface of the substrate and the blades.

8. A combined-blade open flow path device joined body comprising:
the combined-blade open flow path device according to claim 1 which is one of a plurality of unit blocks joined together.

9. The combined-blade open flow path device according to claim 1 , wherein the first blades are spaced apart from an outer perimeter of the outermost portion.

Assignees

• Japan Science & Tech Agency

Inventors

• Hariyama Takahiko
• Ishii Daisuke
• Shimomura Masatsugu
• Okumura Ko
• TANI Marie

Classifications

• Y10T137/206

  Flow affected by fluid contact, energy field or coanda effect [e.g., pure fluid device or system] · CPC title

• B81B1/00

  Devices without movable or flexible elements, e.g. microcapillary devices · CPC title

• F16K99/0017

  Capillary or surface tension valves, e.g. using electro-wetting or electro-capillarity effects · CPC title

• B01L2300/0877

  Flow chambers · CPC title

• F16K99/0021

  No-moving-parts valves · CPC title