In-line hepa filter
AssigneeNuclear Filter Technology, Inc.
InventorsMichael D. Peterson, Darold M. Popish, Terry J. Wickland, Craig Washburn
Life of this patent
Estimating the term…
Abstract
A stainless steel filter assembly which filters fluid entering a fluid interactive device, such as a gas analyzer, includes a connection block in the line which has lateral ports for coupling with an inlet coupling and an outlet coupling on a filter. The filter has a folded filter media made of sintered stainless steel panels which are separated by stainless steel screens that increase the surface area of the filter media exposed to the inlet stream of fluid to be filtered.
Claims13
A filter for protecting a fluid interactive device from particulate contamination, comprising:
- a filter element comprising a stainless steel filter media arranged in a plurality of overlapping panels separated by stainless steel metal screening, the panels each having a downstream side and an upstream side;
- a stainless steel housing containing the filter element, the housing having an upstream chamber and a downstream chamber separated from one another by the filter element;
- a filter inlet fixed to the downstream chamber and a filter outlet connected to the upstream chamber;
- a pair of couplings connected to the filter inlet and filter outlet, and
- a connection block having an inlet port and an outlet port for connection in an inlet line of the fluid device, the connection block further having an inlet filter connection port and an outlet filter connection port, each having coupling structures complementing the pair of couplings, whereby the filter is readily removable from the connection block.
A filter for protecting a gas analyzer from particulate contamination, comprising:
- a filter element comprising a filter media arranged in a plurality of overlapping panels separated by metal screening, the panels each having a downstream side and an upstream side;
- a housing containing the filter element, the housing having an upstream chamber and a downstream chamber separated from one another by the filter element;
- an inlet fixed to the downstream chamber and an outlet connected to the upstream chamber;
- a first pair of couplings connected to the inlet and outlet, and
- a connection block having an inlet port and an outlet port for connection in an inlet line of the gas analyzer, the connection block further having an inlet filter connection port and an outlet filter connection port each having secondary coupling structures complementing the first pair of coupling structures, whereby the filter is readily removable from the connection block while the connection block remains connected in the inlet line of the gas analyzer;
- the housing, filter support, couplings and connection block being made of stainless steel and the filter media is made of HEPA material.
Dependencies are inferred from the claim text.