EXHAUST DIRECTION CONTROLLER

摘要

PROBLEM TO BE SOLVED: To obtain an efficient exhaust direction controller minimizing the exhaust resistance by forming a notch part at a part of an outer circumferential surface of a conical air direction control plate from a jetting port to an exhaust top connection port. SOLUTION: A notch part 4 is formed at a part of an outer circumferential surface of a conical air direction control plate 1 mounted on the front side of an exhaust port 11 of an exhaust top 10 from a jetting port 2 to an exhaust top connection port 3. The size of the notch part 4 is set in terms of angle at 170 deg.-185 deg. for the part of the jetting port 2 and at 85 deg.-110 deg. for the part of the exhaust top connection part 3. The both rims of the notch part 4 connecting the jetting port 2 and the exhaust top connection port 3 are set at 40 deg.-50 deg. for the front inclined rim on the side of the jetting port 2 and 65 deg.-90 deg. for the rear inclined rim thereof. The ratio of the length between the front inclined rim and the rear inclined rim is 3:1. The angle of an inclined surface connecting the jetting port 2 and the exhaust top connection port 3 is set at 5 deg.-50 deg. and the length of the inclined surface is set within 2/3±5% of the diameter of the jetting port 2.