초록 ▼

This invention relates to a filter in which a fuel pump for drawing fuel from a tank and a fuel filter unit for filtering foreign matter from the fuel which has been drawn from the tank by the fuel pump are integrally assembled together. More particularly, the invention relates to a filter improved

This invention relates to a filter in which a fuel pump for drawing fuel from a tank and a fuel filter unit for filtering foreign matter from the fuel which has been drawn from the tank by the fuel pump are integrally assembled together. More particularly, the invention relates to a filter improved such that the amount of electric charge, which builds up on the filter, is not increased to such an extent that the resin is rapidly deteriorated. In one embodiment, when forming a filter by assembling a generally cylindrical filter element around an outer periphery of a generally cylindrical pump, a cover for covering the filter element is made of a nonconductive material, and the generally cylindrical filter element is of the type which filters foreign matter from the fuel by causing the fuel to flow radially therethrough. With this type of filter element, the amount of electric charge can be reduced. Therefore, by covering the filter element with a nonconductive cover and disposing it within a tank, corona discharge is generated from the surface of the cover when the cover is exposed above the fuel remaining in the tank to thereby present a problem of electric discharge. Thus, the amount of electric charge on the surface of the cover can be controlled so as not to increase the resin deterioration rate.

대표청구항 ▼

1. A fuel filter unit arranged and constructed to be utilized within a fuel tank, comprising:a fuel filter element, a lower housing having a first space for receiving a fuel pump and a second space for receiving the fuel filter element, a fuel filter case disposed within the lower housing, the fuel

1. A fuel filter unit arranged and constructed to be utilized within a fuel tank, comprising:a fuel filter element, a lower housing having a first space for receiving a fuel pump and a second space for receiving the fuel filter element, a fuel filter case disposed within the lower housing, the fuel filter element being disposed within an enclosed portion of the fuel filter case and the first space being defined within the fuel filter case, and a pressure regulator disposed above a top surface of the fuel filter case, the fuel filter case further comprising a fuel discharge port arranged and constructed to return excess fuel discharged by the pressure regulator to the top surface of the filter case, wherein the lower housing is arranged and constructed to contact fuel disposed within the fuel tank, the lower housing being made of a non-conductive material.