US2918173A

US2918173A - Multi-cavity cartridge for a filterdehydrator

Info

Publication number: US2918173A
Application number: US532717A
Authority: US
Inventors: Roger J Daley; Donald R Schaber
Original assignee: Bowser Inc
Current assignee: Bowser Inc
Priority date: 1955-09-06
Filing date: 1955-09-06
Publication date: 1959-12-22
Anticipated expiration: 1976-12-22
Also published as: BE550794A; DE1122651B

Description

Dec. 22, 1959 R, J. DALEY ETAL MULTI-CAVITY CARTRIDGE FOR A FILTER-*DEHYDRATOR Filed Sept. 6, 1955 2 Sheets-Sheet 2 I I 1 4 5 m MULTl-CAVTTY CARTRIDGE FOR A FILTER- DEHYDRATOR Roger J. Daley and Donald R. Schaber, Fort Wayne, Ind, assignors to Bowser, Inc., Fort Wayne, 11113., a corporation of Indiana Application September 6, 1955, Serial No. 532,717

12 Claims. (Cl. 210-492) This invention relates to a cartridge for a filter-dehydrator and more particularly it relates to a cartridge with a multiplicity of cavities or pockets and adapted for removing contaminant and water from a Water-oil emulsion which may be present in such liquids as jet fuel, gasoline, fuel oil, diesel fuel, kerosene and other similar products.

The principal object of the present invention is to provide a cartridge which will remove entrained water and separate water-oil emulsion from fuel oil.

Another object of this invention is the provision of a cartridge which will remove impurities such as dirt and other contaminant from fuel oil.

It is a further object of this invention to provide a cartridge which can be replaced by a new cartridge when the original cartridge becomes fouled or otherwise rendered inoperative.

An important object of the invention is to provide a cartridge with an inner integrated section or barrier having a light density to provide depth filtration of the liquid and an outer section of heavier density for coalescing and, to provide additional filtration of the liquid.

Another object of the invention is to provide a cartridge with two different separating and filtering mediums, each of which is made of glass fibers having a predetermined density.

A still further object of the invention is the provision of a filter-stripper cartridge which will efliciently handle liquids under a relative high flow rate and have a substantially longer performance longevity.

Another object of this invention is to provide a filterstripper cartridge of this character of simple and practical construction, which is efficient and reliable in use, relatively inexpensive to manufacture and otherwise well adapted for the purposes for which the same is installed.

With the objects definitely in view, together with other objects which will appear as this description proceeds, this invention resides in certain novel features of construction, combinations and arrangements as will be hereinafter described in detail in the specification, particularly pointed out in the appended claims and illustrated in the accompanying drawings which form a material part of this application, and in which:

Figure 1 is a vertical sectional view of a filter-dehydrator tank showing the separator units mounted therein and the preferred disposition of the fluid connections;

Figure 2 is a vertical sectional view with parts broken away of the separator unit illustrated in Figure 2;

Figure 3 is a perspective view showing the top locking cap and ring;

Figure 4 is a perspective view with a section broken away showing the filter-dehydrator cartridge;

Figure 5 is an exploded view showing the two sections of the cartridge alternately stacked.

Referring to the drawings, particularly Figure 1, the numeral 11 designates a tank provided with a deck plate or partition 13 which is disposed across the lower end to 2,918,173 Patented Dec. 22, 1959 form an inlet chamber 15, and an efliuent chamber or compartment 17. The tank is mounted on legs 19.

A ring 21 is attached near the top of the tank and secured thereto by conventional means such as a weld 23. The numeral 25 designates a removable cover provided with a radial flange 27, and vertical flange 29. A gasket 31 is placed between the flange 27 and the ring 21 to provide a seal. The tank is provided with clamping means 33 which is adapted to engage the flange 29 for fastening the cover thereto. The cover is provided with a conventional vent 35.

The inlet conduit 37 is connected at one end to the inlet chamber 15 and at the other end with a pump or other source of fuel under pressure (not shown). The outlet conduit 39 extends vertically through the bottom of the tank 11, the deck plate 13, and terminates adjacent the upper end of the chamber 17.

A drain tube 41 having a valve 43 is disposed in the wall of the tank above the deck plate and communicates with the lower portion of the chamber 17.

As illustrated in Figure 2, the separating unit 45 is provided with a bottom head member 47 with a number of down-turned ears 49 bent outwardly at their free ends 51. The head member is provided with a central opening 53 and a recess or depression 55 for centering a coupling or nipple 57 which is then welded to the head member at 59.

The coupling is provided with a recess 61 adjacent the end which is attached to the head member and a gasket 63 is positioned therein. The other end of the coupling is provided with a tapered recess 65 which converges inwardly toward a threaded portion 67 and serves to guide the coupling into position on a nipple 69 affixed to the deck plate 13.

The cage 71 is constructed of perforated metal or similar material. One end of the cage is adapted to seat on the outwardly projection 51.

A top ring 73 is provided with spaced downturned cars 75 which are welded or otherwise fixed to the inner part of the wall of the cage near the upper end thereof. The ring is provided with radially spaced projections 77.

As shown in Figure 3, the cap or cover 79 is provided with a downwardly projecting flange 81 having spaced bayonet slots 83. The slot is provided with a recess for receiving the projection 77 and functions to prevent the cap from becoming disengaged when the parts are assembled.

An outer collector sleeve is constructed of an upper part 85 of nylon or Paige cloth which is substantially nonpervious to water and pervious to oil, and a lower part 87 of linen toweling which is pervious to water. A cord or wire 89 is used to close or fasten the top of the sleeve above the cap 79 and the bottom portion of the sleeve is stitched with cotton thread at 91 leaving an opening 93 for the coupling 57.

The cartridge 95 as shown in Figures 4 and 5 is con structed from sections or elements which are preferably cut from square slabs or blocks of fiber glass material of different densities. More specifically, the filtering sections or elements 97 are cut from a low, approximately one-half pound density, preferably two inch thick slab of type B super fine fiber glass material which is bonded with a resin such as a phenol formaldehyde, thermosetting resin.

Each section is provided with a round, central opening 98 which serves to give the entering liquids an even flow through the cartridge.

A one-half pound density is defined as the weight of volume of the material which has been compressed to a cubic foot.

The coalescing sections or elements 99 are cut from 3 a high, approximately eight pound density, preferably a five-eighth inch thick slab or type B fiber glass material which is preferably uniformly bonded with a resin such as a phenol formaldehyde, thermosetting resin and compressed during curingo'f the resin: so-that -the fiber glass is held'in the compressed or predensified state bythe polymerized resin; An eight pound densityis defined as the weight of volume of the material whichhash];'ee'n} compressed to a cubic foot. Each coalescing section is;

provided with a square,- centralo'pening'96, whichi'ssiib stantially larger in diameter than the opening 98in the filtering sections.

To assemble thecartridge, the sections 97 and are alternately stacked in a holding or stacking; fixture to length of approximately seven feet. A topc'a'p' or plate' 101 having aninwardly, solid dished portion 103 is placed on one end of the stack and'servestoseal the top portion of thecartridge. A bottom cap 105 having an inwardly dished portion 107 and provided with a central opening 109 is placed on the bottom end of the s'tacked's'ections. 'Ihestackingfixture is then placedxin an assembly; fixture having an arbor which is inserted through the opening 109. An air cylinder compresses the seven'feet of "alternately stacked sectionsto approximately three feet.

A sleeve or stockinglll of cotton, knit tubing, which is of ribbedconstruc'tion for yieldability, is pulled over the compressed sections and clamped to each end of the cartridge. The sleeve is pervious to both oil and water.

The cartridge is removed from the assembly fixture and placed on a holding fixture. The ends of the sleeveare cemented to the end plates 103 and105, respectively. After the cement has set, the completed cartridge is withdrawn from the fixture and is, ready for use; When the cartridge is placed in the cage 71 between the bottom head 47 and top plate 79 it is compressed approximately an additional four inches, thus assuring a seal ateach end of the cartridge.

Operation The fuel oil including contaminant, water and water,- oil emulsion is delivered under pressure through the conduit 37 into chamber whence the fuel oil flows to the interior of the cartridge 95 through the nipple 69 and coupling 57.

As the liquid begins to flow through thecartridge a substantial portion of the contaminant is removed by and stored in the inner part of filter section 97. It should be noted that when the filter and coalescing sections are compressed, the inner edges of the filtering sections are in contact with each other and form a unitary or integrated inner periphery which is of low density. The inner edges also form circular cavities or pockets 113 between the innerperiphery which is of low density. The inner edges cavities 113 are substantially triangular in cross section with the vertex toward the center of the circle and the surface of the legs being convex when the outer peripheral edges of sections 97 are compressed. The outer edges of the filtering sections whichare compressed between the sections 99 have approximately the same high density as the coalescing sections.

The integrated inner periphery of the filtering sections functions to eliminate the-coating orcaking of contaminant on the coalescing sections thus avoiding a too rapid increase in differential pressure and provides a longer operational life for the cartridge. The square openings 96 inthe coalescing sections provides a larger surface area for filter-stripping and function to allow the inner periphery of the filtering section to form a more unitary 8.,

The coalescing sections perform the dual function of removing-any solids, including particles of micronic size and of coalescingminute particles of entrained water into markedly larger droplets. The cotton sleeve 111 holds the; sections in an assembled position and provides addi- 7 43 as desired.

The treated fuel passes through the upper part which is pervious to oil into the upper portion of the chamber 17 and out of the discharge line 39.

Although we have described our invention with a certain degree of particularity, it is understood that the present disclosure has been made only by way of example and that numerous changes in the details of construction and the combination and arrangement of parts may be resorted to without departing from the spirit and, the scope of the invention-as hereinafter claimed.

We claim:

1. A cartridge for a filter-dehydrator comprising; in

combination, a filter section having a central opening said filter section constructed of filtering and coalescing material having a low density, a coalescing section of coalescing material for water-oil emulsion breaking, said coalescing section having a central opening larger in diameter than the opening in the filter section, said filter and coalescing sections being alternately stacked and compressed until the inner edges of the filter section fans outwardly to form an integrated inner periphery and the outer edges being compressed sufficiently to form a coalescing section and means for holding the sections assembled.

2. A cartridge for a filter-dehydrator comprising in combination, a first element having a central opening, said first element constructed of fibrous filtering and coalescing material, said first element adapted to remove a substantial portion of contaminant from the liquid passing therethrough, a second element of coalescing material for water-oil emulsion breaking, said second element having a central opening larger in diameter than v the opening in the first element, said first and second elements being alternately stacked and compressed so that the inner edges of the first element fans outwardly to form a unitary inner periphery with the outer edges being saidfirst element being of filtering and coalescing mate-.

rial having a low density, a second element of coalescing material for water-oil emulsion breaking, said second element having a central opening larger in diameter than the opening in the first element, said first and second element being alternately stacked and compressed so that the inner edges of the first element fans outwardly to form an integrated inner periphery for depth filtration oftheliquid and the outer edges compressed to form coalescing sections and means for holding the elements assembled.

4. A cartridge for a filter-dehydrator comprising, in combination, a first element having a central opening, said first element constructed of low, uniform density fiber glass material and bonded slightly with resin to maintain a firm element, a second element having a central opening larger in diameter than the opening in the first element, said second element constructed of a high, uniform density fiber glass material and bonded with resin to maintain a firm element, said first and second elements altcrnatelystacked and compressed'so that the inner edges of the first element fans outwardly to form an integrated inner, periphery and the outeredges 1 compressed so. that thedensity is substantially thesame ssembled;

5. A cartridge for a filter-dehydrator comprising, in combination, a first fiber glass element having a round central opening, a second fiber glass element having a square central opening larger in diameter than the opening in the first element, said first and second elements being alternately stacked and compressed so that the inner portion of the first element fans outwardly to form an integrated inner periphery and the outer portion of said first element being compressed to substantially the same form as the second element and means for holding the elements in assembled position.

6. A cartridge for a filter-dehydrator comprising, in combination, a first element of porous, resin bonded, fiber glass material having a central opening, a second element of porous, predensified, resin bonded, fiber glass material having a central opening larger in diameter than the opening in the first element, said first and second elements being alternately stacked and compressed so that the inner portion of the first element fans outwardly to form an integrated inner periphery for depth filtration of contaminant, said second element and compressed outer portion of the first element adapted for water-oil emulsion breaking and means for holding the elements under compression.

7. A cartridge for a filter-dehydrator comprising, in combination, a first element having a round central opening, said first element composed of resin bonded fiber glass material having a low density, a second element having a square central opening larger in diameter than the opening in the first element, said second element composed of a predensified resin bonded fiber glass material having a high density, said first and second elements being alternately stacked and compressed so that the inner portion of the first element fans outwardly to form an integrated inner periphery for depth filtration, said second element and compressed outer portion of the first element adapted for water-oil emulsion breaking, and means including a liquid pervious sleeve for holding the elements under compression.

8. A cartridge for a filter-dehydrator comprising, in combination, a first element having a central opening, said first element composed of resin bonded fiber glass material having a low density, a second element having a central opening larger in diameter than the opening in the first element, said second element composed of resin bonded fiber glass material having a high density, said first and second elements being alternately stacked and compressed so that the inner portion of the first element forming a unitary inner periphery fans outwardly to form circular cavities between the unitary periphery and second element, and means for holding the elements under compression.

9. A cartridge for a filter-dehydrator comprising a first element of fibrous filtering and coalescing material having a low density, said first element provided with a central opening, a second element of fibrous coalescing material having a high density adapted for water-oil emulsion breaking, said second element provided with a central opening larger in diameter than the opening in the first element, said elements being alternately stacked and compressed so that one edge of said first element fans outwardly to form an integrated portion for removing a substantial portion of contaminant from the liquid, said integrated portion adapted to prevent distribution of the removed contaminant on the surface of the second element and the outer edges of said first element being compressed sufficiently for water-oil emulsion breaking and means for holding the elements under compression.

10. A cartridge for a filter-dehydrator comprising a first element of fiber glass material having a density of substantially one-half pound per cubic foot and provided with a central opening, a second element of fiber glass material having a density of substantially eight pounds per cubic foot and provided with a central opening larger in diameter than the central opening in said first element, said elements being alternately stacked and compressed so that the inner portion of the first element fans outwardly to form a unitary mass adapted to remove a substantial portion of contaminant from the liquid being filtered and the outer edge being compressed to substan tially the same density as the second element, said second element and outer portion of the first element adapted for water-oil emulsion breaking and means for holding the elements assembled.

11. A cartridge for a filter-dehydrator comprising a first element of fiber glass material having a substantially low density and provided with a central opening, a second element of fiber glass material having a substantially high density and provided with a central opening larger in diameter than the central opening in said first element, said first and second elements being alternately stacked and compressed so that the inner edges of the first ele ment fans outwardly to contact each other to form circular cavities between the contacting edges and second element, and the outer edge of said first element compressed to substantially the same density as the second element for water-oil emulsion breaking, and means for holding the elements under compression.

12. A cartridge for a filter-dehydrator comprising, in combination, a first section of fiber glass material having a central opening, said first section being of low density, a second section of fiber glass material of high density and having a central opening slightly larger in diameter than the central opening in the first section, said first and second sections alternately stacked and compressed so that the inner edge of the first section fans outwardly to form a first unitary filtering medium and the outer compressed edge of the first section and the second section serves as a unitary coalescing medium for water and oil separation, and means for holding the sections together.

References Cited in the file of this patent UNITED STATES PATENTS 1,750,935 Maunula et al Mar. 18, 1930 2,190,014 Colas Feb. 13, 1940 2,345,849 Winslow Apr. 4, 1944 2,521,984 Lang Sept. 12, 1950 2,525,287 Cuno Oct. 10, 1950 2,550,853 Nugent May 1, 1951 2,657,808 Mankin Nov. 3, 1953 2,682,953 Gunn July 6, 1954 2,725,986 Marvel Dec. 6, 1955 2,739,713 Robinson Mar. 27, 1956 2,800,232 Marvel July 23, 1957 FOREIGN PATENTS 400,030 Italy Nov. 23, 1942 UNITED STATES PATENT OFFICE EERHEEEATE GE REEUHUN Patent Noo 2318 173 Roger J Daley et alo December 22 1959 It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction and that the said Letters Patent should read as corrected below.

Column 3 line 54., for "innerperiphery which is of low density" read inner periphery and the coalescing sections -5 same column lines 54 and 55 for "The inner edges cavities 113' read The circular cavities 113 column 4,, line 12 strike out "of"; column 5 lines 49 and 50 strike out "forming a unitary inner periphery fans outwardly to form" and insert instead fans outwardly to form a unitary inner periphery forming Signed and sealed this 27th day of September 1960,

(SEAL) Attest:

KARL H, AXLINE RUBERT C. WATSON Attesting Oificer Commissioner of Patents