| 摘要 |
PURPOSE:To prevent the filter of an oil fuel feed system from clogging, by preventing separation of wax and the like from the fuel by keeping the temperature of fuel properly, by utilizing the generated heat from a circulating pump to feed fuel, in a fuel feed system for petroleum for various types of apparatuses such as an engine and a burner. CONSTITUTION:A fuel feedback line 6 is branched off into two lines in the middle part of it, one line 9 is connected to a feed tank 1, provided with a check valve 10, and the other line 8 is connected to a feed line 2, provided with a two way type valve with a thermostat. The connected position of a line 8 to a line 2 is to be nearer to a feed tank 1 than a pump 4 and a filter 3. The valve 7 is to be opened when the temperature of fuel in a line 6 is below the predetermined temperature. With such a structure, the fuel is gradually heated by the heat from a pump 4, and the fuel is stably fed without extreme change in fuel viscosity, as well as a filter 3 is effectively prevented from clogging. |
