| 摘要 |
A gas torch assembly and its method of use are described for use in high- temperature applications such as a furnace, power generation station, pottery kiln and flame cutting and welding torches, which requires only inexpensive, low environmental impact, low pressure fuels such as propane gas and air; utilizes the initial internal combustion of the fuef gas to subsequently preheat air/oxygen and/or the fuel gas to well above ambient temperature; and dispenses with the need of arc-oxygen or arc-air cutting of metals. The assembly (1 ) includes a nesting of concentric first, second and third hollow tubular bodies (8,9,10) with four bores (7) positioned substantially equidistant around the perimeter near the inlet end (2) of body (8). The end (2) of the first body (8) and the end (16) of the second body (9) are fused to a first end cap (6). The end (17) of the third body (10) and the end (18) of the first body (8) are fused to a second end cap (11 ). The dimensions of the first, second and third bodies (8,9, 10) are such that, once the assembly is constructed, the end (19) of the second body (9) Is spaced from the upper surface of the second end cap (11); the length of the third body (10) and the external diameter of its end (20) are such that a first annular space (21 ) is formed around the perimeter of the first end cap (6); and the second body (9) is spaced from the first body (8) to form a second annular space (22). The bore (14) of the first end cap (6) is threaded to accommodate a complementary threaded connector (5) which, in turn, is connected to a cylinder of propane gas. |
