Cast filter assembly-modular design

Patent metadata

Field	Value
Publication number	US-10926205-B2
Application number	US-201715627611-A
Country	US
Kind code	B2
Filing date	Jun 20, 2017
Priority date	Jun 20, 2017
Publication date	Feb 23, 2021
Grant date	Feb 23, 2021

Abstract

A filter assembly has a one-piece cast metal pressure vessel with an inlet port communicating only with an inlet chamber and an integral offset bulkhead forming a separate filtrate chamber on the opposite side of the bulkhead having an upper exit port and lower exit port on opposite sides of the filtrate chamber. A filter assembly is disposed through an aperture in the bulkhead with the filter inlet side communicating only with the inlet chamber and the filter outlet side communicating only with the filtrate chamber. An access opening is provided in the top of the pressure vessel with a lid for changing filters. A closure member attached over the lower exit port configures the assembly for simplex operation. Relocating the closure member to cover the upper exit port on a pair of the pressure vessels with filters therein readily configures the pair for attachment to opposite sides of a central diverter valve for duplex filtering operation without rework of either of the pair of pressure vessels.

First claim

The invention claimed is:

1. A fluid filtration assembly comprising:
(a) a pressure vessel having a one-piece housing having a fluid entrance chamber having an entrance port therein and a fluid filtration chamber with an integrally formed offset dividing wall between the entrance chamber and the filtration chamber and having a first and second filtrate exit port therein disposed on opposite sides of the one-piece housing with each communicating exclusively with the filtration chamber wherein the entrance port and first filtrate exit port are aligned;
(b) a filter access opening in the fluid entrance chamber having a removable closure or cover disposed thereover;
(c) a filter subassembly disposed through an aperture formed in the dividing wall with an inlet side of the subassembly communicating exclusively with the fluid entrance chamber and a filtrate outlet side of the subassembly communicating exclusively with the filtration chamber;
(d) wherein the second exit port has a separate removable closure or lid disposed thereover for simplex filter operation; and
(e) wherein, upon relocating the removable closure or lid on the second filtrate exit port and relocating same to cover the first filtrate exit port on a pair of identical ones of the pressure vessels, each with filter subassemblies therein, the pair of identical pressure vessels are thus configured without rework for attachment to a central diverter valve for duplex filtering operation.

2. The assembly of claim 1 , wherein the filter subassembly includes a porous basket having filter media disposed therein.

3. The assembly of claim 1 , wherein the housing is a one-piece cast metal member with the first exit port below the second exit port and the dividing wall offset.

4. The assembly of claim 1 , wherein the entrance chamber entrance port and the first exit port each have a common flanged fitting removably attached thereto for attachment to the fluid conduit.

5. The assembly of claim 4 , wherein each common flanged fitting is attached with removable fasteners.

6. The assembly of claim 1 , wherein the housing has an integrally formed therewith a generally planar base portion.

7. The assembly of claim 1 , wherein the filter subassembly is aligned with the filter access opening to facilitate removal thereof.

8. The assembly of claim 1 , wherein the removable cover for the filter access opening is attached to the housing with threaded fasteners.

9. The assembly of claim 1 , wherein the entrance chamber entrance port and second filtrate exit port have planar attachment surfaces are disposed in a common plane.

10. A duplex fluid filtration assembly comprising:
(a) a pair of identical one-piece filter housings having a fluid entrance chamber having an entrance port therein and a fluid filtration chamber with an integrally formed offset dividing wall between the entrance chamber and the filtration chamber and having a first and second filtrate exit port therein disposed aligned on opposite sides of the housing each communicating exclusively with the filtration chamber wherein the entrance port and first filtrate exit port are aligned and the second filtrate exit port has a removable closure disposed thereover for simplex fluid filtration, wherein the closure for the second exit port is removed and repositioned to cover the first filtrate exit port of each of the pair of housings for duplex fluid filtration;
(b) a filter subassembly disposed through the aperture of the dividing wall of each of the pair of housings with the inlet side of the subassembly communicating exclusively with the respective fluid entrance chamber and the filtrate outlet side communicating exclusively with the filtration chamber;
(c) a diverter valve assembly having a valve block with a first upper rotatable valve member and a second rotatable lower valve member disposed therein and commonly rotatable about a common axis by an operating member extending externally of the valve block, wherein the valve block has a system inlet port adapted for connection to a fluid supply conduit and a system outlet port adapted for connection to a filtrate conduit and a first and second oppositely disposed outlet port, each positioned to communicate respectively with the fluid entrance port of the fluid entrance chamber of one of the pair of housings and pairs of oppositely disposed inlet ports each positioned to communicate respectively with one of the lower fluid outlet ports of the filtration chamber of one of the pairs of housings and the valve block includes an outlet port adapted for connection to a filtrate discharge conduit, wherein the diverter valve in a first position is operable to have the upper rotatable valve member communicate the valve block system inlet port exclusively with one of the pair of fluid entrance chamber inlet ports and the lower rotatable valve member communicate the filtrate outlet port of the one of the pair of filtrate chambers with the valve system outlet port; and, wherein the diverter valve upon rotation to a second position is operable to have the upper rotatable valve member communicate the valve block system inlet port exclusively with the other of the pair of fluid entrance chamber inlet ports and the lower rotatable valve member communicates the other filtration chamber outlet port with the valve block system outlet port; and,
(d) wherein the diverter valve ports have planar attachment surfaces in a common plane for each filter housing.

11. The duplex filtration assembly of claim 10 , wherein the first and second rotatable valve members have a spherical configuration.

12. The duplex filtration assembly of claim 10 , wherein the system inlet port and the system outlet port are disposed on opposite sides of the valve block.

13. A fluid filtration assembly comprising:
(a) a one-piece pressure vessel having formed integrally therewith
(i) an inlet chamber and a fluid inlet port communicating exclusively therewith,
(ii) a filtrate outlet chamber and first and second outlet ports on opposite sides of the pressure vessel communicating exclusively with the filtrate chamber wherein the fluid inlet port and the first outlet port are disposed on opposite sides of the pressure vessel and are aligned,
(iii) an offset bulkhead isolating the inlet chamber from the filtrate chamber,

(b) a removable fluid filter subassembly received through an aperture formed in the bulkhead, wherein the inlet side of the filter subassembly communicates exclusively with the inlet chamber and the filtrate outlet side thereof communicates exclusively with the filtrate outlet chamber;
(c) an access opening in the inlet chamber and aligned with the aperture in the bulkhead; and, a removable closure/lid disposed over the access opening for permitting access to and removal of the filter subassembly;
(d) a removable closure disposed over the second filtrate chamber outlet port, wherein, upon connection of the fluid inlet port to a source of fluid flow, the assembly is operative to provide filtrate flow to the first filtrate outlet port;
(e) wherein upon relocation of the closure from the second filtrate outlet port to the first filtrate outlet port on each of a pair of identical ones of the pressure vessel assemblies, the pressure vessel assemblies are adapted for conversion from simplex to duplex filtration; and,
(f) a diverter valve having an inlet communicating with a first and second outlet disposed on opposite sides thereof and a common outlet communicating with a first and second inlet disposed respectively on the opposite sides thereof, wherein one of the pair of the pressure vessels has its inlet connected to the outlet on one side of the v

Assignees

• Eaton Intelligent Power Ltd

Inventors

• Thorat Kumar Chandrakant
• Levis Mark A

Classifications

• B01D2201/301

  Details of removable closures, lids, caps, filter heads · CPC title

• B01D35/12 Primary

  Devices for taking out of action one or more units of multi- unit filters, e.g. for regeneration · CPC title

• B01D24/10

  the filtering material being held in a closed container · CPC title

• B01D35/30

  Filter housing constructions · CPC title

• B01D35/1573

  Flow control valves · CPC title