| 摘要 |
PURPOSE:To maintain the performance of a product for a long time through prevention of stock juice from entering into an exhaust hole, by a method wherein the exhaust hole in a gas heater is formed such that it is cut and risen outwardly and upwardly until the cut rise piece extends approx. horizontally. CONSTITUTION:A exhaust device 5 is formed such that a part of the rear plate of a heater 3 is cut and risen outwardly and upwardly until the cut rise piece extends approx. horizontally to form an exhaust hole 8. An exhaust cylinder 9, the upper surface and the side of which are open, is secured to the rear plate of the heater 3 so that the exhaust hole 8 is covered therewith. A part of the rear plate, positioned facing the exhaust cylinder 9 and below the exhaust hole 8, is cut and risen outwardly and downwardly to form a bent piece 10 which is sloped such that outward rise is gradually increased toward the upper part. Further, the forward end of the bent piece is positioned within the same plane as or inside that of a cut rise piece 7. This causes the upper open part of the exhaust cylinder 9 to be covered with a permeable exhaust port cover 11. The exhaust hole 8 of the heater 3 is formed such that a part of the rear plate is cut and risen outwardly and upwardly until it extends horizontally, and thereby the cut rise piece 7 serves as a cover body for the exhaust hole 8. Even if juice stock and the like is dropped through the upper open part of the exhaust cylinder 9, it is prevented from entering into the range 3. |
