VENTILATION SYSTEM FOR A HEATING DEVICE OPERATING WITH LIQUID FUEL IN A SINGLE LINE SYSTEM

摘要

A working with liquid fuel in the single-rail operation heater comprises a fuel pump (1), which sucks fuel from a storage tank (6) and into a pressure-line area, which communicates with an opening into a combustion chamber atomizer nozzle (10), wherein Excess fuel from the pressure range via a pressure regulator (14), a return line (16) and a bypass line (19) is returned to the suction side of the fuel pump. In order to be able to vent the pressure line area in a simple and environmentally friendly manner, a venting device (18) is arranged between the return line and the bypass line, which comprises an actuating element which can be moved back and forth between an operating position and a venting position and which in the operating position is the return line with the bypass line connects while ensuring a secure seal of the medium located in these lines to the outside, and in the venting position, the return line connects to the outside of the heater and thereby closes the bypass line.