Apparatus for heating fuel
First Claim
1. An apparatus for heating fuel, especially Diesel fuel and heating oil, that is to be supplied to a unit in which said said fuel is to be atomized and burned, wherein a fuel line leads to said unit through a fuel filter, and a liquid line is provided in which flows liquid that is heated up by said unit;
- said apparatus comprises;
a heat exchanger disposed upstream of said fuel filter about said fuel line and in said liquid line, whereby said liquid flows through said heat exchanger to heat up said fuel line;
an electrical heating element that is disposed directly on said fuel filter for heating the inner space of the latter; and
switch means provided with said heating element being activated and deactivated in a controlled manner automatically with the aid of a temperature sensor when the temperature of the fuel has fallen below a predetermined temperature at the inlet to or the interior of the fuel filter, said fuel filter having a casing with a bottom that is provided with a water drain opening that is closed off by the threaded end of a drain plug having a longitudinal groove formed on the threaded end of the drain plug so that separated-off water can be drained from the fuel filter without completely removing the drain plug; and
disposed in said filter casing is a filter element that leaves free an inner space, with said electrical heating element being in the form of a heating rod that is disposed on said threaded end of said drain plug and is inserted into said inner space;
said heating rod having connection leads that extend through said drain plug.
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Accused Products
Abstract
An apparatus for heating fuel, especially Diesel fuel and heating oil, that is to be supplied, for example, to a motor or oil burner. Disposed upstream of a fuel filter is a heat exchanger that heats the fuel line. To continuously heat fuel without supplemental energy consumption, the heat exchanger has warm coolant or liquid, for example from the engine, flow through it to heat it up. Disposed on the fuel filter is an electrical heating element that can directly heat the filter space or fuel contained in the filter housing. The heating element can be activated and deactivated in a controlled manner, for example manually, only when needed.
25 Citations
2 Claims
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1. An apparatus for heating fuel, especially Diesel fuel and heating oil, that is to be supplied to a unit in which said said fuel is to be atomized and burned, wherein a fuel line leads to said unit through a fuel filter, and a liquid line is provided in which flows liquid that is heated up by said unit;
- said apparatus comprises;
a heat exchanger disposed upstream of said fuel filter about said fuel line and in said liquid line, whereby said liquid flows through said heat exchanger to heat up said fuel line; an electrical heating element that is disposed directly on said fuel filter for heating the inner space of the latter; and switch means provided with said heating element being activated and deactivated in a controlled manner automatically with the aid of a temperature sensor when the temperature of the fuel has fallen below a predetermined temperature at the inlet to or the interior of the fuel filter, said fuel filter having a casing with a bottom that is provided with a water drain opening that is closed off by the threaded end of a drain plug having a longitudinal groove formed on the threaded end of the drain plug so that separated-off water can be drained from the fuel filter without completely removing the drain plug; and
disposed in said filter casing is a filter element that leaves free an inner space, with said electrical heating element being in the form of a heating rod that is disposed on said threaded end of said drain plug and is inserted into said inner space;
said heating rod having connection leads that extend through said drain plug. - View Dependent Claims (2)
- said apparatus comprises;
Specification