This is an especially designed, square or cylindrical relates to ultraviolet light for disinfection reactor chamber using the included kithyeong having formed in the same manner as the effective length of the UV lamp, which is installed in a quartz tube inside the length of the reactor, the installation and the port kithyeong chamber between the outer peripheral surface of the quartz tube reactor and exposed to the outside of the reactor, the UV lamp installation part and the insulation of the power cable to supply power to the drive is to be positioned in the quartz tube located at an inner side of the fabric kithyeong chamber, installing a leak-proof seal between the contact portion of the quartz tube and the rear end portion of the port chamber kithyeong and in that. In this way relatively to actually exist in the isolated portion and the interior of the reactor power cable connection of the lamp that is not involved in the ultraviolet ray irradiation to the cooling of the lamp in the UV reactor for disinfecting applying big pressure lamp output per unit length of the invalid section There is a limit to satisfy sikineunde dose required for sterilization for the fluid passing through, whereas in the present invented by giving to add a catcher kithyeong installation chamber, the fluid to the fluid as it passes through the reactor it is possible to ensure an area that is recycled to the inner chamber of the effective lamp it is possible to pass through only the period and can satisfy the dose required for sterilization, the temperature in the chamber is also applicable for a large liquid fluid because the heat capacity than the air temperature rise is low and automatically as convection effect due to the density difference a predetermined amount below in circulation will only be able to satisfy the sterilization dose.본 고안은 포킷형 챔버를 이용한 살균용 자외선 반응기에 관한 것으로 특히, 사각 또는 원통 형상을 갖는 반응기의 길이를 석영관 내부에 설치되는 자외선 램프의 유효 길이와 동일하게 형성하고, 상기 반응기의 외측으로 노출된 석영관의 외주면과 반응기의 외측 사이에는 포킷형 챔
