Cell for ultraviolet irradiation module and ultraviolet irradiation module

Patent metadata

Field	Value
Publication number	US-2019358356-A1
Application number	US-201816331790-A
Country	US
Kind code	A1
Filing date	Jan 31, 2018
Priority date	Jan 31, 2017
Publication date	Nov 28, 2019
Grant date	—

Abstract

The present invention is intended to provide a cell for an ultraviolet irradiation module and an ultraviolet irradiation module with which it is possible to improve the efficiency of sterilizing an object to be irradiated to a greater extent than in the past. The cell for an ultraviolet irradiation module includes a case being at least partially formed of polytetrafluoroethylene having a crystallite size in a direction of 60 nm or more and 250 nm or less and having an internal space into which an object to be irradiated can be introduced.

First claim

1 . A cell for an ultraviolet irradiation module, comprising:
a case being at least partially formed of polytetrafluoroethylene having a crystallite size in a (110) direction of 60 nm or more and 250 nm or less and comprising an internal space into which an object to be irradiated can be introduced.

2 . The cell according to claim 1 , wherein the polytetrafluoroethylene has an average crystallinity of 0.51 or more and 0.61 or less.

3 . The cell according to claim 1 , wherein the polytetrafluoroethylene has a density of 2160 kg/m 3 or more and 2180 kg/m 3 or less.

4 . The cell according to claim 1 , wherein an inner surface of the case at least partially has a reflectance of 94% or more for ultraviolet light at a wavelength of 265 nm.

5 . The cell according to claim 1 , wherein,
30% or more and 99% or less of the surface area of an inside of the case as a relative solid angle when the case is projected from the center position of a light source is composed of the polytetrafluoroethylene satisfying at least one of a condition where the crystallite size in the (110) direction is 60 nm or more and 250 nm or less or a condition where the average crystallinity is 0.51 or more and 0.61 or less.

6 . The cell according to claim 1 , wherein,
30% or more and 99% or less of the surface area of an inside of the case as a relative solid angle when the case is projected from the center position of the internal space is composed of the polytetrafluoroethylene satisfying at least one of a condition where the crystallite size in the (110) direction is 60 nm or more and 250 nm or less or a condition where the average crystallinity is 0.51 or more and 0.61 or less.

7 . The cell according to claim 1 , wherein,
30% or more and 99% or less of the surface area of an inside of the case as a relative solid angle when the case is projected from the midpoint of a straight line connecting between an inlet and an outlet is composed of the polytetrafluoroethylene satisfying at least one of a condition where the crystallite size in the (110) direction is 60 nm or more and 250 nm or less or a condition where the average crystallinity is 0.51 or more and 0.61 or less.

8 . An ultraviolet irradiation module comprising:
the cell according to claim 1 ; and an ultraviolet irradiation device capable of irradiating the internal space of the case with ultraviolet light.

9 . The ultraviolet irradiation module according to claim 8 , wherein
a light source of the ultraviolet irradiation device is an LED, and the LED has an emission wavelength of 10 nm or more and 400 nm or less.

10 . The ultraviolet irradiation module according to claim 8 , wherein the object to be irradiated has fluidity and is a liquid or a powder.

11 . The cell according to claim 2 , wherein the polytetrafluoroethylene has a density of 2160 kg/m 3 or more and 2180 kg/m 3 or less.

12 . The cell according to claim 2 , wherein an inner surface of the case at least partially has a reflectance of 94% or more for ultraviolet light at a wavelength of 265 nm.

13 . The cell according to claim 3 , wherein an inner surface of the case at least partially has a reflectance of 94% or more for ultraviolet light at a wavelength of 265 nm.

14 . The cell according to claim 2 , wherein,
30% or more and 99% or less of the surface area of an inside of the case as a relative solid angle when the case is projected from the center position of a light source is composed of the polytetrafluoroethylene satisfying at least one of a condition where the crystallite size in the (110) direction is 60 nm or more and 250 nm or less or a condition where the average crystallinity is 0.51 or more and 0.61 or less.

15 . The cell according to claim 3 , wherein,
30% or more and 99% or less of the surface area of an inside of the case as a relative solid angle when the case is projected from the center position of a light source is composed of the polytetrafluoroethylene satisfying at least one of a condition where the crystallite size in the (110) direction is 60 nm or more and 250 nm or less or a condition where the average crystallinity is 0.51 or more and 0.61 or less.

16 . The cell according to claim 4 , wherein,
30% or more and 99% or less of the surface area of an inside of the case as a relative solid angle when the case is projected from the center position of a light source is composed of the polytetrafluoroethylene satisfying at least one of a condition where the crystallite size in the (110) direction is 60 nm or more and 250 nm or less or a condition where the average crystallinity is 0.51 or more and 0.61 or less.

17 . The cell according to claim 2 , wherein,
30% or more and 99% or less of the surface area of an inside of the case as a relative solid angle when the case is projected from the center position of the internal space is composed of the polytetrafluoroethylene satisfying at least one of a condition where the crystallite size in the (110) direction is 60 nm or more and 250 nm or less or a condition where the average crystallinity is 0.51 or more and 0.61 or less.

18 . The cell according to claim 3 , wherein,
30% or more and 99% or less of the surface area of an inside of the case as a relative solid angle when the case is projected from the center position of the internal space is composed of the polytetrafluoroethylene satisfying at least one of a condition where the crystallite size in the (110) direction is 60 nm or more and 250 nm or less or a condition where the average crystallinity is 0.51 or more and 0.61 or less.

19 . The cell according to claim 4 , wherein,
30% or more and 99% or less of the surface area of an inside of the case as a relative solid angle when the case is projected from the center position of the internal space is composed of the polytetrafluoroethylene satisfying at least one of a condition where the crystallite size in the (110) direction is 60 nm or more and 250 nm or less or a condition where the average crystallinity is 0.51 or more and 0.61 or less.

20 . The cell according to claim 1 , wherein,
30% or more and 99% or less of the surface area of an inside of the case as a relative solid angle when the case is projected from the center position of the internal space is composed of the polytetrafluoroethylene satisfying at least one of a condition where the crystallite size in the (110) direction is 60 nm or more and 250 nm or less or a condition where the average crystallinity is 0.51 or more and 0.61 or less.

Assignees

• Asahi Chemical Ind

Inventors

• Takeguchi Keigo
• Sugiyama Sho
• Kishi Hiroyuki

Classifications

• C02F2201/3228

  Units having reflectors, e.g. coatings, baffles, plates, mirrors · CPC title

• C02F2201/3222

  Units using UV-light emitting diodes [LED] · CPC title

• C02F1/325 Primary

  Irradiation devices or lamp constructions · CPC title

• A61L2/10

  Ultraviolet [UV] radiation · CPC title

• A61L2202/122

  Chambers for sterilisation · CPC title