FLUID BLOWING-OUT PORT STRUCTURE

摘要

PURPOSE: To provide a fluid blowing-out port structure capable of performing a periodic changing of a fluid flowing direction without using any power. CONSTITUTION: A slit-like blowing-out port is constructed by a difuser 1 which is expanded in a fan-like shape, a blowing-out port 3-1 of a float 3 for use in blowing out fluid is arranged at a narrow inlet port 1-3 of the diffuser 1. Both end openings 2-1 and 2-2 of a loop pipe passage 2 are arranged at a connected part between the narrow inlet port 1-3 of the diffuser 1 and the blowing- out port 3-1 of the float 3 and there is provided a means capable of changing a resistance in the pipe passage in the loop pipe passage 2 in which a pipe passage resistance in the means such as an orifice 4 or a valve (not shown). In addition, it is possible to change optionally a pipe passage length of the loop pipe passage 2.