PROBLEM TO BE SOLVED: To provide a chimney exhaust top capable of continuing efficient exhausting from a chimney for a long period of time and preventing rain water from entering into the chimney.;SOLUTION: This invention relates to a chimney exhaust top A comprising; a connecting cylinder 1 connected to an exhaust port B1 of a chimney B so as to communicate with the exhaust port B1; a top plate 2 arranged to prevent rain water from above from flowing into an upper end opening 10 just above the upper end opening 10 of the connecting cylinder 1 and arranged to be spaced apart from the upper end opening 10; an exhaust space 3 secured between the upper end opening 10 and the lower surface of the top plate 2; an outer cylinder 4 enclosing the outer circumference of the exhaust space 3 so as to form an exhaust passage 3A communicated with the exhaust space 3; and an inner cylinder 5 positioned inside the outer cylinder 4 and more outside than the outer circumference of the exhaust space 3 so as to face against the inner circumference of the outer cylinder 4 in a radial direction in at least a part of the outer circumference. The inner cylinder 5 is arranged to prevent rain water from entering into the upper end opening 10 in a direction toward the upper end opening 10 at a space between a circumferential edge 20 of the top plate 2 and an upper end edge 40 of the outer cylinder 4.;COPYRIGHT: (C)2015,JPO&INPIT
展开▼
