Filter inline heater
AssigneeShaw Development, LLC
InventorsJohn R. Koonce, Michael O'Hara
Life of this patent
Estimating the term…
Abstract
A filter assembly comprising a housing, a filter, a heater, hose fittings, a heat bridge, and insulators. The housing defines interior and exterior regions communicating through apertures. The filter separate the housing into a region upstream of the filter comprising an aperture, and a region downstream of the filter comprising an aperture. The heater extends into the interior region. The hose fittings are each coincident with an aperture and are formed of a material having a high thermal conductivity. The heat bridge is formed of a material having a high thermal conductivity and thermally connects the heater to the hose fittings. The insulators each are formed of a material having a low thermal conductivity, and each at least partially cover a hose fitting.
Claims25
A filter assembly comprising:
- a housing comprising an interior and exterior, the interior and the exterior in fluid communication through a first aperture and a second aperture;
- a filter capable of filtering an aqueous solution, the filter positioned within the housing, the filter separating the housing into:
- a first region upstream of the filter, the first region in fluid communication with the second aperture, and
- a second region downstream of the filter, the second region in fluid communication with the first aperture;
- a heater extending into the interior of the housing;
- a first hose fitting extending into the housing and in fluid communication with the first aperture,
- a second hose fitting extending into the housing and in fluid communication with the second aperture;
- and
- a heat bridge thermally connecting the heater to the first hose fitting and to the second hose fitting.
A filter assembly for filtering aqueous urea solution, the filter assembly comprising:
- a housing defining a pair of regions in fluid communication through a first aperture and a second aperture, wherein a portion of the housing comprises one or more insulating materials;
- a filter received within the housing, the filter separating the housing into a first region upstream of the filter, the first region in fluid communication with the second aperture, and a second region downstream of the filter, the second region in fluid communication with the first aperture;
- a heater extending into the first region, wherein the heater is thermally connected by a heat bridge with at least the second region;
- a first hose fitting in fluid communication with the first aperture;
- and
- a second hose fitting in fluid communication with the second aperture.
Dependencies are inferred from the claim text.