Apparatus for removing exhaust gas pressure and preventing backflow of exhaust gas

An apparatus for removing pressure and preventing backflow of exhaust gas comprising:

• a fixed pipe configured to fit into an end of an exhaust pipe or a boiler pipe extending from an internal combustion engine;
• and
• a second exhaust pipe installed to surround the fixed pipe,
• wherein the fixed pipe includes:
• a non-fitted portion protruding outwardly from the end of the exhaust pipe;
• a hollow interior in communication with the exhaust pipe;
• and
• a plurality of fixed pipe flow apertures formed along a circumference at a position adjacent to the end of the exhaust pipe,
• wherein a backward stream channel is formed between the fixed pipe and the second exhaust pipe to inflow backward stream gas that flows backward among exhaust gas discharged through the fixed pipe, the backward stream gas is guided into an interior of the fixed pipe through the fixed pipe flow apertures, and the guided backward stream gas is again discharged outwardly,
• wherein the fixed pipe has a funnel shape formed obliquely against a central axis from one end fitted into the end of the exhaust pipe towards the other end, so that a cross-sectional area of the backward stream channel becomes gradually large from one end towards the other end.