Filter cartridge and/or multiple-diameter multiple stage filter coalescer separator

Patent metadata

Field	Value
Publication number	US-11235266-B2
Application number	US-202016930669-A
Country	US
Kind code	B2
Filing date	Jul 16, 2020
Priority date	Aug 1, 2018
Publication date	Feb 1, 2022
Grant date	Feb 1, 2022

Abstract

A filter cartridge with easier extraction provided by a roll-out clearance region for a radial seal is provided. The filter cartridge may be a two stage filter with the seal being located between stages and usable in a filtration vessel having a central separation wall with one or more riser pipes. Also, a new vessel is disclosed with multiple diameters for first and second stages of the housing with a larger second stage diameter as compared to the first stage, which can reduce door size and/or cause fluid flow velocities to be slower at the second stage relative to the first stage.

First claim

What is claimed is:

1. An assembly for fluid filtration, comprising:
a housing, and
at least one filtration element supported within the housing;
the housing including:
i) an upstream housing portion with an inlet port for receiving a fluid stream to be filtered,
ii) a downstream housing portion with an outlet port for discharging a filtered fluid stream,
iii) a separation wall between the upstream and downstream housing portions, wherein the at least one filtration element is sealing and removably supported within an aperture of the fluid separation wall, enabling fluid entering the inlet port to flow into the at least one filtration element through an upstream portion of the filtration element and out of the at least one filtration element through a downstream portion of the at least one filtration element to the outlet port; and
iv) a door on the upstream portion enabling access to the at least one filtration element, the upstream housing portion having an outer diameter that is smaller than an outer diameter of the downstream housing portion.

2. The assembly of claim 1 , the outer diameter of the upstream housing portion is smaller than an outer diameter of the downstream housing portion so that that fluid exiting the element at the downstream portion has a lower velocity than fluid entering the at least one filtration element at the upstream portion.

3. The assembly of claim 1 , wherein the housing comprises a filtration vessel having an open end at the upstream housing portion and a closed end at the downstream housing portion in axially spaced relation, with the at least one filtration element comprising a plurality of filtration elements extending horizontally within the filtration vessel in parallel fluid circuit with each filtration element comprising a first stage and a second stage, each filtration element comprising a ring seal in radial sealing engagement with a corresponding tubular sealing support riser of the separation wall to divide each filtration element into the first stage and the second stage, and wherein the inlet port extends radially through the upstream housing portion, and the outlet port extends radially through the downstream housing portion.

4. The assembly of claim 1 , further including an inlet support grid and an outlet support grid spaced on opposite sides of the separation wall, the inlet support grid supporting the at least one filtration element along the upstream housing portion and the outlet support grid supporting the at least one filtration element along the downstream housing portion, the inlet support grid having a first outer diameter matched to the upstream housing portion and the outlet support grid having a second outer diameter matched to the downstream housing portion with the second outer diameter being larger than the first outer diameter.

5. The assembly of claim 4 , wherein the separation wall has a separation wall diameter matched to that of the upstream housing portion and the first outer diameter, thereby being smaller than the second outer diameter.

6. The assembly of claim 1 , further comprising a conical neck portion interposed between the downstream housing portion and the upstream housing portion with the conical neck section having spaced apart annular welds at different diameters that connect with respectively a smaller diameter cylindrical housing section and a larger diameter cylindrical housing section.

7. The assembly of claim 6 , wherein the smaller diameter housing section entirely provides for the upstream housing portion and extends past the separation wall to form part of the downstream housing portion, wherein the door has a mating interface at a door mating diameter for mating with the upstream housing portion that is matched with the outer diameter of the upstream housing portion, and thereby the door mating diameter is less than the outer diameter of the downstream housing portion.

8. The assembly of claim 1 , wherein the door mates with the upstream housing portion at a mating interface at a diameter that is at least 10% less than the outer diameter of the downstream housing portion.

9. The assembly of claim 1 , wherein the outer diameter of the upstream housing portion is smaller than the outer diameter of the downstream housing portion by between 5 and 40%.

10. The assembly of claim 9 , wherein the outer diameter of the upstream housing portion is between 0.15 and 3 meters; and the outer diameter of the downstream housing portion is between 0.2 and 3.5 meters.

11. The assembly of claim 1 , wherein the outer diameter of the upstream housing portion is smaller than the outer diameter of the downstream housing portion by between 15 and 25%.

12. The assembly of claim 4 , wherein the upstream housing portion transitions to a larger diameter to the downstream housing portion radially outward of the second stage and axially between the separation wall and the outlet support grid.

13. The assembly of claim 1 , wherein the at least one filtration element, comprises:
a filter media tube;
a seal holder mounted to the filter media tube,
a seal ring supported by the seal ring holder and facing radially outwardly; and
wherein the filter media tube includes a first filter stage and second filter stage that is arranged fluidically downstream of the first stage with a predetermined flow path radially inwardly through the filter media tube at the first filter stage, axially inside of the tube toward the second filter stage and radially outwardly through the filter media tube at the second filter stage; and wherein the seal holder is positioned axially between the first stage and the second stage of the filter media tube.

14. The assembly of claim 13 , wherein the seal ring is a radial seal including seal flange having an annular shape and projecting radially outwardly with the seal flange projecting at angle toward the first stage and away from the second stage, the roll-out clearance region being arranged only on the second stage.

15. The assembly of claim 14 , wherein the at least one filtration element further comprises a roll-out clearance region provided by the seal ring holder on one side of the seal flange.

16. The assembly of claim 15 , wherein the seal ring holder defines a ledge axially supporting the seal ring, the ledge terminating at an outermost location radially inward and spaced radially inward of an innermost location of the seal flange to provide the roll-out clearance region as an annular clearance space at least partly around the ledge, wherein the seal ring holder defines a seal seating surface adjacent the ledge, the seal seating surface radially supporting an inner periphery of the seal ring, and wherein the seal holder further comprises a recess region on a side of the ledge opposite the seal seating surface, the roll-out clearance region extending into the recess region, the recess region having a diameter less than the seating surface.

17. An assembly for fluid filtration, comprising:
a housing, and
a plurality of filtration elements supported within the housing in spaced relation;
the housing including:
i) an upstream housing portion with an inlet port for receiving a fluid stream to be filtered,
ii) a downstream housing portion with an outlet port for discharging a filtered fluid stream,
iii) a separation wall between the upstream and downstream housing portions, the separation wall being provided by a partition with openings having riser pipes mounted thereto, with each riser pipe defining an aperture; wherein each filtration element is sealing and removably supported within the a

Assignees

• Parker Hannifin Corp

Inventors

• Burns Jack David
• Jeane Stephen
• Dye Andrew
• Stevens Jeremy

Classifications

• B01D29/52 Primary

  in parallel connection · CPC title

• B01D2201/316

  Standpipes · CPC title

• B01D29/58

  arranged concentrically or coaxially · CPC title

• B01D2201/0453

  positioned between at least two plates · CPC title

• B01D2201/347

  Radial sealings · CPC title