Fluid sterilization device

Abstract

Provided is a fluid sterilization device (1) that sterilizes a fluid, such as water, by irradiating with ultraviolet light, and in which the production cost can be reduced even if a fluororesin is used as the material of a flow path pipe through which the fluid flows. The fluid sterilization device is provided with a flow path pipe (10) having a flow path (101), an inlet (102), and an outlet (103); and an ultraviolet light irradiation module (14) that irradiates ultraviolet light into the flow path, the flow path pipe having a cylindrical first portion (11) and a second portion (12) connected to one end of the first portion, the first portion comprising a fluororesin that reflects the ultraviolet light emitted from the ultraviolet light irradiation module, the second portion comprising an attachment portion (121) to which the ultraviolet light irradiation module is attached and an outflow port, the attachment portion (121) being configured from a fluororesin that reflects the ultraviolet light emitted from the ultraviolet light irradiation module, and the outflow port being configured from a fluororesin that reflects the ultraviolet light emitted from the ultraviolet light irradiation module. A reflector (17) is provided on the inner surface of the second portion that is the inner wall of the flow path, and the reflector is made of a fluororesin that reflects the ultraviolet light emitted from the ultraviolet light irradiation module.

Description

technical field [0001] The invention relates to a fluid sterilizing device. Background technique [0002] Conventionally, there is known a fluid sterilizing device that sterilizes fluids such as water by irradiating ultraviolet light (for example, refer to Patent Document 1). The fluid sterilizing device of Patent Document 1 is equipped with a housing, and the above-mentioned housing has a flow path for the fluid to be sterilized to flow in the axial direction, an inflow port for the fluid to flow in, and an outflow port for the fluid to flow out. One end is provided with an inlet, and the other end of the shell is installed with a light source module device for generating ultraviolet light. [0003] In addition, the wavelength of ultraviolet light generated by the light source module device is 240nm to 380nm, and the material of the housing whose inner surface is irradiated with ultraviolet light includes stainless steel. [0004] Patent Document 1: Japanese Patent Laid-O...

AI Technical Summary

Problems solved by technology

[0006] However, fluororesin is an expensive material

In particular, PTFE (polytetrafluoroethylene), a fluororesin with excellent ultraviolet light reflectance in the wavelength region called UV-C (less than 280nm) with a high bactericidal effect, has a very high melt viscosity, so ordinary In melt processing, in order to process the target shape, it is necessary to cut from a block produced by compressing and firing PTFE powder, and the material cost and processing cost are very high.

[0007] Therefore, in the fluid sterilizing device described in Patent Document 1, if the material of the casing is simply replaced with fluororesin, the reflectivity of ultraviolet light of the casing is high, so the sterilization efficiency is high, but the manufacturing cost is very high. high

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