Abstract: A heating device, particularly an automotive heating device, in which a noise muffling device is integrated within the heating device. The muffler can be provided in the combustion pipe defining the combustion chamber, or the combustion pipe, itself, can be designed as the muffler. The muffler operates by absorption and/or reflection sound muffling techniques in accordance with various embodiments, and may, simultaneously, purify the combustion gases, for example, by catalytic afterburning, and/or by filtering of soot particles. The muffler is arranged in a hot zone, but not in the flame area of the combustion chamber, to achieve a self-cleaning action. In other embodiments, noise muffling material is arranged in an exhaust gas collection chamber to achieve sound muffling based on reflection and/or absorption and/or other conventional sound reduction methods. In all cases, the need for an external muffler in the exhaust line from the heating device is eliminated.

Abstract: A heater with a burner which is supplied with liquid fuel by a metering pump and a fuel supply line, is provided with a throttle in the fuel supply line between the metering pump and the burner. The throttle is preferably formed by a long throttle element, in particular a wire, which is placed and inserted into a fuel line connector that is rigidly connected to the burner. The throttle which is formed in this way smooths out the volume flow of fuel to the burner and reduces the dwell time of the fuel, especially in the fuel line connector, in order to prevent gas evolution and the associated formation of vapor bubbles.