초록 ▼

An exhaust muffler having a protective shield to reduce noise radiation and to decrease the temperature of the exhaust gases being discharged from the muffler. The muffler is composed of an outer body enclosed at its ends by flanges, and an outer insulated shell is spaced outwardly from the body and

An exhaust muffler having a protective shield to reduce noise radiation and to decrease the temperature of the exhaust gases being discharged from the muffler. The muffler is composed of an outer body enclosed at its ends by flanges, and an outer insulated shell is spaced outwardly from the body and is connected to the peripheral edges of the flanges. Holes are provided in the flanges which communicate with the space between the shell and the body so that air is drawn by convection through the space between the outer body and the shell. A tubular member is spaced outwardly of the outlet pipe of the muffler and the outer end of the tubular member projects outwardly beyond the outer end of the outlet pipe. Openings are provided in the base of the tubular member and exhaust gas being discharged from the outlet pipe creates an aspirating action, so that air is drawn in through the openings into the space between the tubular member and the outlet pipe by both convection and aspirating action to aid in cooling the exhaust gases being discharged through the outlet pipe.

대표청구항 ▼

A muffler construction comprising, a muffler including an elongated vertically disposed outer tubular body, a first head enclosing one end of the body, a second head enclosing the opposite end of the body, an inlet pipe for introducing exhaust gas into the muffler, an outlet pipe for discharging the

A muffler construction comprising, a muffler including an elongated vertically disposed outer tubular body, a first head enclosing one end of the body, a second head enclosing the opposite end of the body, an inlet pipe for introducing exhaust gas into the muffler, an outlet pipe for discharging the exhaust gas from the muffler, a heat insulated shell spaced radially outward of said body to provide an annular passage therebetween, said heads projecting radially beyond said body and being connected to the respective ends of said shell, a plurality of first holes disposed in the first end head and communicating with one end of said passage, and a plurality of second holes disposed in the second head and communicating with the opposite end of said passage, air being passed by convection through said first holes and said passage and being discharged through said second holes to thereby cool said body.