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An improvement in an exhaust device to absorb the energy of exhaust gases released during operation of a circuit interrupting device such as a power fuse or an expulsion fuse is disclosed. The exhaust control device includes a hollow housing coated with a corrosion resistant coating mounted to the c

An improvement in an exhaust device to absorb the energy of exhaust gases released during operation of a circuit interrupting device such as a power fuse or an expulsion fuse is disclosed. The exhaust control device includes a hollow housing coated with a corrosion resistant coating mounted to the circuit interrupting device by means of an adapter, composed of a corrosion resistant material such as brass, which is retained in a counterbore within the housing by rolling or folding over the extended upper rim of the housing so that the coating is not damaged. Alternatively, a steel header, welded to and plated along with the steel housing shell, within which the threaded brass adapter is installed, may also be used. The same rolling or folding operation may be used to secure a plated outlet end wall. Baffles positioned within the housing for partitioning the housing into chambers for cooling and filtering the hot exhaust gases, for changing the direction of flow of the gases and for attenuating sound are held in place by crimping the hollow housing around the baffles so that the plating is not damaged. An annular expansion space formed between the hollow housing and an inner cylindrical shell increases the surface area of the hollow housing which is exposed to the blast of exhaust gases emitted from the fuse and provides an additional expansion chamber for receiving the exhaust gases produced by the interrupting device. A labyrinth plate with circumferential notches formed therein and arcuate ridges formed within and adjacent to said notches, forms gas diverting channels and a labyrinth flow pattern exhaust path to the exit ports formed within an outlet end wall.

대표청구항 ▼

An exhaust control device for a circuit interrupter comprising: a hollow housing having a corrosion resistant coating thereon; an inlet end wall having an intake port formed therein for receiving a stream of hot exhaust gases incident to the operation of the circuit interrupter, said inlet end wall

An exhaust control device for a circuit interrupter comprising: a hollow housing having a corrosion resistant coating thereon; an inlet end wall having an intake port formed therein for receiving a stream of hot exhaust gases incident to the operation of the circuit interrupter, said inlet end wall held in place within one end of said hollow housing by folding said hollow housing over said inlet end wall so that the corrosion resistant coating on said housing is not damaged; at least one baffle for partitioning said hollow housing into a plurality of chambers for cooling and filtering the hot exhaust gases, for changing the flow of the hot exhaust gases, and for attenuating sound, said at least one baffle held in place within said hollow housing by the crimping of said hollow housing adjacent to said at least one baffle so that the corrosion resistant coating is not damaged; an outlet end wall having a corrosion resistant coating thereon, and having one or more exit ports formed therein, for allowing the exhaust gases to escape to the atmosphere, said outlet end wall held in place within the other end of said hollow housing by folding said hollow housing over said outlet end wall so that the corrosion resistant coating on said housing is not damaged.