Hollow-fiber degassing module and inkjet printer

Patent metadata

Field	Value
Publication number	US-2018056665-A1
Application number	US-201515539639-A
Country	US
Kind code	A1
Filing date	Dec 9, 2015
Priority date	Dec 24, 2014
Publication date	Mar 1, 2018
Grant date	—

Abstract

Provided is a hollow fiber degassing module which includes a hollow fiber membrane bundle obtained by bundling a plurality of hollow fiber membranes in a cylindrical shape and a cylindrical body receiving the hollow fiber membrane bundle and extending in an axial direction and degasses a liquid by supplying the liquid to a gap between the hollow fiber membranes from a hollow portion of the hollow fiber membrane bundle and depressurizing the inside of the hollow fiber membrane, the hollow fiber degassing module including a support body which contacts an inner peripheral surface of the hollow fiber membrane bundle.

First claim

1 . A hollow fiber degassing module which includes a hollow fiber membrane bundle obtained by bundling a plurality of hollow fiber membranes in a cylindrical shape and a cylindrical body receiving the hollow fiber membrane bundle and extending in an axial direction and degasses a liquid by supplying the liquid to a gap between the hollow fiber membranes from a hollow portion of the hollow fiber membrane bundle and depressurizing the inside of the hollow fiber membrane, the hollow fiber degassing module comprising:
a support body which contacts an inner peripheral surface of the hollow fiber membrane bundle.

2 . The hollow fiber degassing module according to claim 1 , wherein the support body has a cylindrical shape.

3 . The hollow fiber degassing module according to claim 1 , wherein the support body has a mesh shape.

4 . The hollow fiber degassing module according to claim 1 , wherein the support body is disposed between one end surface and the other end surface of the hollow fiber membrane bundle in a center axis direction of the hollow fiber membrane.

5 . (canceled)

6 . The hollow fiber degassing module according to claim 1 , wherein the liquid is at least one kind selected from the group consisting of glycols, glycol monoalkyl ethers, glycol dialkyl ethers, glycol monoacetates, glycol diacetates, alcohols, ketones, acetic acid esters, lactic acid esters, saturated hydrocarbons, unsaturated hydrocarbons, cyclic saturated hydrocarbons, cyclic unsaturated hydrocarbons, aromatic hydrocarbons, terpenes, ethers, cyclic imides, 3-alkyl-2-oxazolidinone, N-alkyl pyrrolidone, lactones, and nitrogen-containing solvents.

7 . The hollow fiber degassing module according to claim 1 , wherein the liquid is UV ink or ceramic ink.

8 . An inkjet printer in which ink stored in an ink storage portion is supplied to an inkjet head through an ink passage,
wherein the hollow fiber degassing module according to claim 1 is attached to the ink passage.

9 . A liquid degassing method of degassing a liquid by supplying the liquid to a gap between hollow fiber membranes from a hollow portion of a hollow fiber membrane bundle and depressurizing the inside of the hollow fiber membrane using the hollow fiber degassing module according to claim 1 .

Assignees

• Dainippon Ink & Chemicals

Inventors

• Suganuma Youhei
• Oi Kazumi

Classifications

• B01D61/00

  Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor (separation of gases or vapours by diffusion B01D53/22) · CPC title

• B41J2/19 Primary

  for removing air bubbles · CPC title

• B01D63/04

  comprising multiple hollow fibre assemblies · CPC title

• B01D19/0031 Primary

  by filtration · CPC title

• B01D19/0036

  Flash degasification (the other groups take precedence) · CPC title