Filter system and filtration method for fluid reservoirs

摘要

A fluid reservoir includes a reservoir body forming a reservoir volume and a header opening. A header seals the header opening and includes at least a heater disposed within the reservoir volume and a fluid draw conduit. A bag filter is connected to the header such that it completely encloses the heater and the fluid draw conduit such that, when fluid is drawn from the reservoir volume through the sump location, the fluid is filtered by the bag filter.

主权项

1. A fluid reservoir adapted to enclose a fluid therewithin, the fluid reservoir comprising:
a reservoir body forming a reservoir volume and a header opening that is fluidly open to the reservoir volume; a header connected to the reservoir body and disposed to seal the header opening; a fluid draw conduit connected to the header and extending through the header between a sump location, the sump location being within the reservoir volume, and a fluid draw port disposed external to the reservoir body; a bag filter connected to and at least partially enclosing the header, the bag filter completely enclosing the sump location of the fluid draw conduit within the reservoir volume such that, when fluid is drawn from the reservoir volume through the sump location, said fluid is first filtered by the bag filter; and a sump device disposed around the sump location of the fluid draw conduit, wherein the sump device forms a fluid inlet, and a secondary filter disposed to filter fluid entering the fluid draw conduit through the fluid inlet of the sump device, wherein a porosity of the secondary filter is larger than a porosity of the bag filter.