A microbicidal purification device employing ultraviolet light from which ultraviolet-light-irradiation dead areas have been eliminated, comprising:
- headers including a first header and a second header, each header having a header space, the first header having an inlet port and a plurality of tubes, and the second header having an outlet port;
- a plurality of cylindrical tubes, both ends of the plurality of cylindrical tubes are open and are coupled in parallel with the respective one of the plurality of tubes of the first header so that both open ends of each cylindrical tube can be connected with the header space of the first header and the header space of the second header, wherein an ultraviolet lamp is inserted into each of the plurality of cylindrical tubes;
- a partition plate having a plurality of holes positioned between the header space of the first header and the plurality of tubes such that fluid is discharged through the header space and flows into the interior of each of the plurality of tubes, wherein the header space of the first header is coupled with the plurality of cylindrical tubes in parallel;
- a plurality of crystal tubes, each of which has a first end which is closed, and a second end which is sealingly fixed at the first header so that the second end is open and is exposed to the outside of the first header, the plurality of crystal tubes being inserted in the plurality of cylindrical tubes and being positioned at the centers of each of the plurality of cylindrical tubes;
- and
- a plurality of ultraviolet light lamps, each of which has a ultraviolet light output forming the diameter of a sterilization region to be larger than or same as the diameter of one of the plurality of cylindrical tubes and inserted and installed in the interior of one of the plurality of crystal tubes,
- wherein fluid is to be received into the header space of the first header through the inlet port, flows through the plurality of cylindrical tubes in parallel, into the header space of the second header, then out through the outlet port, and wherein each of the header spaces of the first and second headers is a single space.