| 摘要 |
PURPOSE:To improve combustion performance and life strength by a method wherein an outer cylinder containing an inner cylinder is formed so as to be divided in front and rear or right and left. CONSTITUTION:An outer cylinder 15 can device in front and rear by removing engaging screws 23, and can repair of change by the inner cylinder 11 is removed and taken off from a groove 18a. Connecting portions 14 is formed so as to be projected at the both ends of the inner cylinder 11 and the inner cylinder 11 is supported by the groove parts 18a, 18b provided on the both ends of the outer cylinder 15, thereby, the bad affection for the combustion due to entering contermination into the combustion place, is avoided and stable combustion is guaranteed. Accordingly, arbitrary structural material can arrange on the circumference of the inner cylinder 11 and the outer cylinder 15, further, the combustion condition and the red heat condition of a front perforated plate 13b can effect the most suitable condition. In the case the shape of the inner cylinder 11 and the outer cylinder 15 is flat, reinforcement material can append to them to prevent heat deformation, therefore, the long life may be obtained. |
