tube

JP7874395B2Active Publication Date: 2026-06-16NISSEI ELECTRIC CO LTD
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
NISSEI ELECTRIC CO LTD
Filing Date
2020-08-21
Publication Date
2026-06-16

AI Technical Summary

Benefits of technology

【0009】 本発明によれば、通気フィルタや脱気給気など分離用途に使用可能であって、さらに、径方向及び軸方向の両方向に通気するため通気性が改善し、様々なチューブの使用方法、設置方法において使用可能となる。

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Patent Text Reader

Abstract

To provide a tube that can be used for a ventilation filter and gas liquid separation application including degasification and supply air and has excellent ventilation characteristic.SOLUTION: A porous structure tube including a communication hole in a radial direction includes: a main lumen; and at least one sub lumen extending in an axial direction in a thick wall part. The tube preferably has ventilation characteristic in both of the radial direction and the axial direction.SELECTED DRAWING: Figure 1
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Claims

1. A tube made of PTFE with a porous structure having radially connecting holes, used for waterproof and dustproof ventilation filters, air supply, degassing, and gas separation applications, The tube comprises a main lumen and at least one sub-lumen extending axially in the thickened portion. Furthermore, the tube is characterized by sealing at least the entire axial end face of the tube.

2. The main lumen is sealed, The tube according to claim 1.

3. The tube is characterized by having air permeability in both the radial and axial directions. The tube according to claim 1 or 2.

4. The main lumen is characterized by extending along the central axis and being positioned approximately at the center of the tube. A tube according to any one of claims 1 to 3.

5. In a cross-section perpendicular to the axial direction, the sub-flumen are arranged point-symmetrically with respect to the central axis of the tube, A tube according to any one of claims 1 to 4.

6. The porous structure is characterized by having a porosity of 20 to 70%. A tube according to any one of claims 1 to 5.

7. The communication holes are characterized by being arranged along the entire length in the axial direction and throughout the entire thickness of the wall portion. A tube according to any one of claims 1 to 6.

Citation Information

Patent Citations

  • Polymeric membrane type air dryer for vehicle and assembly thereof

    CN103521043A

  • Normal atmospheric temperature deoxidization system for boiler

    CN204873912U

  • Hollow fiber membrane and hollow fiber membrane-type breathing simulator using the membrane

    JP1991146121A

  • Preparation of porous tube and usage of porous tube

    JP2001011224A

  • Gas dissolving device

    JP2002186839A