USRE35433E - Coalescer filter and method - Google Patents
Coalescer filter and method Download PDFInfo
- Publication number
- USRE35433E USRE35433E US08/038,561 US3856193A USRE35433E US RE35433 E USRE35433 E US RE35433E US 3856193 A US3856193 A US 3856193A US RE35433 E USRE35433 E US RE35433E
- Authority
- US
- United States
- Prior art keywords
- canister
- air
- iadd
- iaddend
- liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
- B01D46/003—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions including coalescing means for the separation of liquid
- B01D46/0031—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions including coalescing means for the separation of liquid with collecting, draining means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
- B01D46/62—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
- B01D53/266—Drying gases or vapours by filtration
Definitions
- This invention relates to a coalester filter and method for the removal of liquid from air and other gases.
- An air or gaseous stream as contemplated herein occupies at least initially a cross section less than the cross section of the column containing coalescing material.
- the stream is centrally disposed in that a substantial portion is intermediate or away from the inner wall of the column, as originating from the inlet orifice illustrated herein, to permit coalescence of liquid with downward flow thereof by gravity opposite the direction of the stream.
- Another object of the invention is the positive expulsion of the coalesced liquid from the collection canister to avoid the necessity of providing air flow to cause drainage as heretofore.
- Another important object of the invention is to provide a collection canister for the coalesced liquid with an effective and efficient means of discharge as well as ease of servicing and effective mounting and sealing.
- Another important object of the invention is to prevent large and expensive air loss, on a continuous basis, in the discharge of coalesced and collected liquids.
- Another object of the invention is to prevent large pressure drops across the unit normally associated with the discharge of coalesced liquids.
- valve is to be of the pneumatically powered hydraulically differentially operated kind which is completely automatic for positive ejection of the liquids coalesced from the interior of the canister to atmosphere or a piped away drain via a threaded opening at the lower extremity of the automatic drain.
- the air tube in the air stream allows the liquid to drain into a canister that is sealed except when draining liquid in response to the action of the float valve. No air seepage from the canister is required in order to discharge liquid therefrom.
- an excessive quantity of air must flow with the coalesced liquids to assure tile discharge of said coalesced liquids form the collection area, due to a requirement for a constant discharge of air, whether or not any coalesced liquids are present.
- FIG. 1 is a perspective view illustrating a coalescer filler and method of operation in accordance with the invention wherein a canister is positioned below a drainage opening in an upright coalescer housing;
- FIG. 2 is an enlarged perspective view illustrating the collecting area for liquid coalesced in said coalescer housing
- FIG. 3 is a sectional elevation taken on the line 3--3 in FIG. 1 illustrating a coalescer filter and method in accordance with the invention illustrating an air tube connecting the inlet flow of air or other gas into the coalescing material with a discharge container or canister positioned therebeneath for collecting the liquid coalesced material, together with a float valve in the canister, for controlling liquid flow from the canister; and
- FIG. 4 is a perspective view, with parts broken away, further illustrating the canister and valve constructed in accordance with tile invention.
- a coalescer air filter has an upright cylindrical housing or column A containing suitable coalescing material B, An air inlet C is provided through which an unfiltered air flow enters a central lower portion of the upright housing and is directed upwardly as an air stream into the coalescing material.
- a drainage opening D is positioned laterally of the air inlet receiving liquid, and any solids contained therein, coalesced in the housing.
- a drainage container E is carried below the air inlet for collecting liquid from the drainage opening.
- An air tube F extends upwardly from the drainage container into the air flow whereby a differential pressure gradient in the air tube caused by the air flow facilitates a flow of liquid into the drainage container by reducing air pressure in said drainage container or canister.
- a float valve or automatic filter drain G is carried in the canister for controlling discharge of liquid therefrom. preferably by positive ejection of coalesced material.
- FIGS. 1 and 3 illustrate the positioning of an upright cylindrical housing or column A containing coalescing material B between an upper support 10 and a lower or base support 11.
- the base support has an inlet connection 12 for gas on one end and an outlet line 13 for the filtered air or gas on the other end of the base 11.
- the upper support 10 and the base 11 are connected as by elongated bolts 14 which are provided with heads 15 and washers 16 on one end and which are threaded as at 17 on the other end into the base 11.
- Air is introduced through an orifice of lesser cross section than said coalescer so as to be a stream flowing into the column A through the orifice C.
- Moisture or liquid collected as a result of coalescence is collected and passes through the drainage opening D.
- the upper support 10 has a horizontal passageway 18 (FIG. 3) through which an air flow 18a passes from an upper end of the housing A.
- the flow 18a passes downwardly through an upright housing or column 19 which contains a suitable filter material 20 (FIG. 3) to the outlet 13.
- a canister or drainage container E is carried beneath the inlet C and is received on threads 21a on a ring 21 suitably fixed to the base member 11 as by screws 21b. It is important to note that the canister E has a reduced lip 22 defining a recess 22a for positioning a compressible ring such as the O-ring 22b above the internal threads 22c and extending above the upper surface of the lip 22 to form a seal when compressed between the lip and the bottom of the base 11 and within a recess 21c in the ring 21. This provides an effective seal in order to prevent air leakage as might interfere with drainage.
- the inlet connection 12 is threadably received within the bore 12a while the outlet 13 is threadably received in the bore 13a within the base 11.
- the air inlet C is provided in the form of a tubular orifice receiving inlet air or gas from the inlet connection 12 and directing same upwardly as a centrally disposed air stream which has a diameter less than that of the column A. This permits the air flow to directly impinge upon the fibrous metallic non-absorptive coalescing material which may be of the type known as "GOODLOE" which is well known to the prior art and described in U.S. Pat. Nos. Re. 32,989 and 4,801,313, although other preferably non-absorptive porous material suitable for promoting coalescence may be used.
- GOODLOE fibrous metallic non-absorptive coalescing material
- the coalesced material including liquid moves or flows downwardly along the wall of the column and is collected in the area 23 about the inlet orifice C. .Iadd.
- the inlet orifice C, the inlet connection 12 and bore 12a form an inlet conduit through which an inlet gas or air stream flows. .Iaddend.
- the expanded flow of the gaseous stream passes through the openings 10a and 10b and through the openings 10c and 10d into a downward flow extending across the filter column 19.
- the upward gaseous stream in the column A is centrally disposed or located in that it is preferably sufficiently spaced from the wall of the column A at least initially to permit coalescence with downward flow of separated material against the upward flow of the gaseous stream to permit upward coalescence with a downward flow of separated material als against the upwardflow of the gaseous stream.
- the flow of coalesced liquid material through the drainage opening D is aided by producing a pressure differential between the upper opening D and the canister E into which the coalesced material flows.
- a tube F which may be centrally disposed within the air stream flowing into the inlet orifice C on one end. This is illustrated as being accomplished within the bore or duct 12a within the base, but such may extend into the orifice C so long as a pressure differential is achieved.
- the important point is that one end of the tube is in a concentrated air flow or stream to create a pressure drop which is transferred to a canister for collecting the liquid coalesced material.
- the other end of the tube F is disposed in the canister E transferring the pressure differential therein.
- the float valve G is used in combination with the tube F as described above.
- the float valve is preferably of the type schematically illustrated in FIGS. 3 and 4 and may be of a type supplied by Parker Hannifin Corporation, Otsego, Mich. 49078, and designated "automatic filter drain.”
- the automatic filter drain G is positioned in the bottom of the canister E and includes a diaphragm 24 which is responsive to differential pressures created by the level of liquid in the canister across said diaphragm, ejecting liquids in the canister from same to air passage 25 permitting liquid to be drained through the threaded drain 26 which is threaded to accept, if required, a drain line, for the positively ejected liquids.
- the diaphragm 24 and the air passage 25 are contained in the housing 27 which is internally vented to the atmosphere and which is positioned by the nut 28 at the bottom of the canister.
- the collection of the coalesced liquid with solid impurities is facilitated by the provision of the canister which receives the liquid from the drainage passage D.
- the canister which receives the liquid from the drainage passage D.
- flow of liquid through the passage D to the canister is increased.
- the discharge is positively accomplished by means of the automatic filter drain positioned in the bottom of the canister E.
- the particular float valve described and illustrated is especially efficient and is preferred, although any float valve which operates efficiently as an automatic drain responsive to liquid level may be utilized.
- Other drain valves such as automatic float drains, cycle drains, or, electrically or pneumatically timed drain valves may be employed.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
A coalescer filter is illustrated for removing material from a gas wherein a collection of liquid coalesced by passing a gaseous stream upwardly within a coalescing material packed in an upright cylindrical housing is facilitated by creating a pressure drop in a tube .[.by venturi action.]. .Iadd.in an inlet air stream .Iaddend.and communicating the pressure drop to a canister. The use of a float valve is also illustrated for controlling the discharge of liquid collected in a sealed drainage canister receiving coalesced liquid from a lower portion of an upright column or housing containing coalescing material through which a gaseous stream is passed upwardly.
Description
.Iadd.This application is a continuation of application Ser. No. 07/808,188, filed Dec. 13, 1991, now abandoned.
This invention relates to a coalester filter and method for the removal of liquid from air and other gases.
A filter and method is illustrated in U.S. Pat. No. 4,801,313 and in continuation application Ser. No. 07/265,895 filed Nov. 2, 1988, now abandoned wherein a gaseous stream is directed from an orifice of lesser diameter upwardly directly into a column packed with coalescing material. Other patents of interest include U.S. Pat. No. 1,458,005, which discloses a vertical expansion chamber containing no coalescing material but through which an upward flow is created and passes through a foraminous partition into an absorbent material. Of further interest is U.S. Pat. No. Re. 32,989, wherein a downward gaseous flow is first initiated in a vertical column containing a coalescing material from whence the gaseous flow is carried laterally and upwardly into a column containing absorbent material. U.S. Pat. No. 4,822,387 illustrates the use of a cartridge containing coalescing material through which an upward air flow is carried although there is no air stream since the air flow occurs upwardly through the entire cross section of the cartridge. A float valve is positioned in a lower end of an envelope containing the cartridge at an upper end.
An air or gaseous stream as contemplated herein occupies at least initially a cross section less than the cross section of the column containing coalescing material. The stream is centrally disposed in that a substantial portion is intermediate or away from the inner wall of the column, as originating from the inlet orifice illustrated herein, to permit coalescence of liquid with downward flow thereof by gravity opposite the direction of the stream.
Accordingly, it is an important object of the present invention to facilitate the collection and discharge of coalesced liquid from the coalescing column of the filter.
Another object of the invention is the positive expulsion of the coalesced liquid from the collection canister to avoid the necessity of providing air flow to cause drainage as heretofore.
Another important object of the invention is to provide a collection canister for the coalesced liquid with an effective and efficient means of discharge as well as ease of servicing and effective mounting and sealing.
Another important object of the invention is to prevent large and expensive air loss, on a continuous basis, in the discharge of coalesced and collected liquids.
Another object of the invention is to prevent large pressure drops across the unit normally associated with the discharge of coalesced liquids.
It has been found that collection of liquid in a drainage container or canister from an upright housing into which coalescing material is packed and through which a gaseous stream is generated flowing in an intermediate or central portion of the housing containing the coalescing material is facilitated by positioning a tube having one end disposed in an inlet for the gaseous stream into the housing while the other end is positioned within the drainage container creating a negative pressure gradient which serves as an additive force to that of gravity complementing same for removal of coalesced material and solids.
It has been further found that drainage from the drainage container can be facilitated by positioning a float valve therein. Preferably the valve is to be of the pneumatically powered hydraulically differentially operated kind which is completely automatic for positive ejection of the liquids coalesced from the interior of the canister to atmosphere or a piped away drain via a threaded opening at the lower extremity of the automatic drain.
The air tube in the air stream allows the liquid to drain into a canister that is sealed except when draining liquid in response to the action of the float valve. No air seepage from the canister is required in order to discharge liquid therefrom. Theretofore, as in the structure of U.S. Pat. No. 4,801,313, an excessive quantity of air must flow with the coalesced liquids to assure tile discharge of said coalesced liquids form the collection area, due to a requirement for a constant discharge of air, whether or not any coalesced liquids are present.
The construction designed to carry out the invention will be hereinafter described, together with other features thereof.
The invention will be more readily understood from a reading of the following specification and by reference to the accompanying drawings forming a part thereof, wherein an example of rite invention is shown and wherein:
FIG. 1 is a perspective view illustrating a coalescer filler and method of operation in accordance with the invention wherein a canister is positioned below a drainage opening in an upright coalescer housing;
FIG. 2 is an enlarged perspective view illustrating the collecting area for liquid coalesced in said coalescer housing;
FIG. 3 is a sectional elevation taken on the line 3--3 in FIG. 1 illustrating a coalescer filter and method in accordance with the invention illustrating an air tube connecting the inlet flow of air or other gas into the coalescing material with a discharge container or canister positioned therebeneath for collecting the liquid coalesced material, together with a float valve in the canister, for controlling liquid flow from the canister; and
FIG. 4 is a perspective view, with parts broken away, further illustrating the canister and valve constructed in accordance with tile invention.
A coalescer air filter has an upright cylindrical housing or column A containing suitable coalescing material B, An air inlet C is provided through which an unfiltered air flow enters a central lower portion of the upright housing and is directed upwardly as an air stream into the coalescing material. A drainage opening D is positioned laterally of the air inlet receiving liquid, and any solids contained therein, coalesced in the housing. A drainage container E is carried below the air inlet for collecting liquid from the drainage opening. An air tube F extends upwardly from the drainage container into the air flow whereby a differential pressure gradient in the air tube caused by the air flow facilitates a flow of liquid into the drainage container by reducing air pressure in said drainage container or canister. A float valve or automatic filter drain G is carried in the canister for controlling discharge of liquid therefrom. preferably by positive ejection of coalesced material.
FIGS. 1 and 3 illustrate the positioning of an upright cylindrical housing or column A containing coalescing material B between an upper support 10 and a lower or base support 11. The base support has an inlet connection 12 for gas on one end and an outlet line 13 for the filtered air or gas on the other end of the base 11. The upper support 10 and the base 11 are connected as by elongated bolts 14 which are provided with heads 15 and washers 16 on one end and which are threaded as at 17 on the other end into the base 11. Air is introduced through an orifice of lesser cross section than said coalescer so as to be a stream flowing into the column A through the orifice C. Moisture or liquid collected as a result of coalescence is collected and passes through the drainage opening D. The upper support 10 has a horizontal passageway 18 (FIG. 3) through which an air flow 18a passes from an upper end of the housing A.
The flow 18a passes downwardly through an upright housing or column 19 which contains a suitable filter material 20 (FIG. 3) to the outlet 13.
A canister or drainage container E is carried beneath the inlet C and is received on threads 21a on a ring 21 suitably fixed to the base member 11 as by screws 21b. It is important to note that the canister E has a reduced lip 22 defining a recess 22a for positioning a compressible ring such as the O-ring 22b above the internal threads 22c and extending above the upper surface of the lip 22 to form a seal when compressed between the lip and the bottom of the base 11 and within a recess 21c in the ring 21. This provides an effective seal in order to prevent air leakage as might interfere with drainage.
The inlet connection 12 is threadably received within the bore 12a while the outlet 13 is threadably received in the bore 13a within the base 11. The air inlet C is provided in the form of a tubular orifice receiving inlet air or gas from the inlet connection 12 and directing same upwardly as a centrally disposed air stream which has a diameter less than that of the column A. This permits the air flow to directly impinge upon the fibrous metallic non-absorptive coalescing material which may be of the type known as "GOODLOE" which is well known to the prior art and described in U.S. Pat. Nos. Re. 32,989 and 4,801,313, although other preferably non-absorptive porous material suitable for promoting coalescence may be used. The coalesced material including liquid moves or flows downwardly along the wall of the column and is collected in the area 23 about the inlet orifice C. .Iadd.The inlet orifice C, the inlet connection 12 and bore 12a form an inlet conduit through which an inlet gas or air stream flows. .Iaddend.
By thus directing the gas from which material is to be coalesced upwardly in a stream within the coaleating material packed in the column, the stream expands and as a fountain and the coalesced material is separated and flows downwardly by gravity. Thus, coalescence takes place by directing the gaseous stream through the coalescing material upwardly against the force of gravity.
The expanded flow of the gaseous stream passes through the openings 10a and 10b and through the openings 10c and 10d into a downward flow extending across the filter column 19. The upward gaseous stream in the column A is centrally disposed or located in that it is preferably sufficiently spaced from the wall of the column A at least initially to permit coalescence with downward flow of separated material against the upward flow of the gaseous stream to permit upward coalescence with a downward flow of separated material als against the upwardflow of the gaseous stream.
The flow of coalesced liquid material through the drainage opening D is aided by producing a pressure differential between the upper opening D and the canister E into which the coalesced material flows. This is accomplished by the provision of a tube F which may be centrally disposed within the air stream flowing into the inlet orifice C on one end. This is illustrated as being accomplished within the bore or duct 12a within the base, but such may extend into the orifice C so long as a pressure differential is achieved. The important point is that one end of the tube is in a concentrated air flow or stream to create a pressure drop which is transferred to a canister for collecting the liquid coalesced material. The other end of the tube F is disposed in the canister E transferring the pressure differential therein.
Preferably the float valve G is used in combination with the tube F as described above. The float valve is preferably of the type schematically illustrated in FIGS. 3 and 4 and may be of a type supplied by Parker Hannifin Corporation, Otsego, Mich. 49078, and designated "automatic filter drain." The automatic filter drain G is positioned in the bottom of the canister E and includes a diaphragm 24 which is responsive to differential pressures created by the level of liquid in the canister across said diaphragm, ejecting liquids in the canister from same to air passage 25 permitting liquid to be drained through the threaded drain 26 which is threaded to accept, if required, a drain line, for the positively ejected liquids. The diaphragm 24 and the air passage 25 are contained in the housing 27 which is internally vented to the atmosphere and which is positioned by the nut 28 at the bottom of the canister.
In the absence of liquid the diaphragm 24 is seated closing the air passage 25. In view of the negative pressure gradient transferred by the tube F to the canister, flow of the coalesced liquid materials through the passage D to the canister is increased. The discharge is positively accomplished by means of the automatic filter drain positioned at the bottom of the canister E.
Thus, the collection of the coalesced liquid with solid impurities is facilitated by the provision of the canister which receives the liquid from the drainage passage D. In view of the negative pressure gradient created by the tube F to the canister, flow of liquid through the passage D to the canister is increased. The discharge is positively accomplished by means of the automatic filter drain positioned in the bottom of the canister E. The particular float valve described and illustrated is especially efficient and is preferred, although any float valve which operates efficiently as an automatic drain responsive to liquid level may be utilized. Other drain valves such as automatic float drains, cycle drains, or, electrically or pneumatically timed drain valves may be employed.
While a preferred embodiment of the invention has been described using specific terms, such description is for illustrative purposes only, and it is to be understood that changes and variations may be made without departing from the spirit or scope of the following claims.
Claims (11)
1. A coalescer filter for removing a liquid from a gas comprising:
an upright housing;
coalescing material packed in said housing
an inlet .Iadd.conduit .Iaddend.for gas through which an unfiltered gaseous stream enters a lower portion of said upright housing and is directed upwardly into said coalescing material;
a drainage opening positioned laterally of said inlet .Iadd.conduit .Iaddend.receiving liquid coalesced in said housing;
a canister below said inlet .Iadd.conduit .Iaddend.for collecting said liquid from said drainage opening; and
a tube extending upwardly from said canister into said gaseous stream .Iadd.in said inlet conduit .Iaddend.creating a pressure .[.drop in said tube.]. .Iadd.differential between said drainage opening and said canister;.Iaddend.
whereby a negative pressure gradient is created in said canister facilitating a flow of liquid into said canister.
2. The structure set forth in claim 1 including a drain in said canister for controlling discharge of liquid therefrom.
3. The structure set forth in claim 2 wherein said drain includes a float valve.
4. A coalescer air filter comprising
an upright cylindrical housing containing coalescing: material;
an air inlet .Iadd.conduit .Iaddend.through which an unfiltered air stream enters a central lower portion of said upright housing and is directed upwardly into said coalescing material;
a drainage opening positioned laterally of said air inlet .Iadd.conduit .Iaddend.receiving liquid coalesced in said housing;
a canister below said air inlet .Iadd.conduit .Iaddend.for collecting said liquid from said drainage opening; and
an air tube extending upwardly from said canister into said air stream .Iadd.in said inlet conduit;.Iaddend.
whereby a pressure .[.drop in said air tube.]. .Iadd.differential between said drainage opening and said canister .Iaddend.caused by said air .[.flow.]. .Iadd.stream .Iaddend.facilitates a flow of liquid into said canister by reducing air pressure in said canister.
5. A coalescer air filter comprising:
an upright cylindrical housing containing coalescing material packed therein;
an air inlet .Iadd.conduit .Iaddend.through which an unfiltered air stream enters a lower portion of said upright housing and is directed upwardly into said coalescing material;
a drainage opening positioned laterally of said air inlet .Iadd.conduit .Iaddend.receiving liquid coalesced in said housing;
a canister for collecting said liquid from said drainage opening;
a tube extending from said canister into said air stream .Iadd.in said inlet conduit; .Iaddend.and
a float valve in said canister controlling the discharge of liquid collected in said canister;
whereby a pressure .[.drop in said tube.]. .Iadd.differential between said drainage opening and said canister .Iaddend.caused by said air stream facilitates a flow of liquid into said canister by reducing air pressure in said canister.
6. The structure set forth in claim 5 including an upright housing containing a filter carried in side by side relation with said first mentioned upright housing receiving air from an upper portion of said first mentioned housing for downward movement through said filter. .[.
7. The method of removing liquids from an air stream comprising the steps of:
providing an upright cylindrical housing containing coalescing material:
forming an air stream in said cylindrical housing upwardly through said coalescing material;
causing said liquids contained within said air stream to coalesce and flow downwardly by gravity in a direction opposite to the upward flow of said gaseous stream; and
causing a pressure drop in a canister receiving coalesced liquids by positioning a tube having one end in said canister and the other end in said air stream to create a pressure drop in said canister.].. .[.
8. The method of removing liquids from air comprising the steps of:
forming an air stream;
providing an upright cylindrical housing containing coalescing material;
introducing air to said cylindrical housing through said coalecing material;
causing liquids contained within said air to coalesce and flow downwardly; and
causing a pressure drop in a canister positioned below said housing receiving coalescend liquids by positioning a tube having one end in said canister and the other end in said air stream to create a pressure drop in said canister..].
9. The method set forth in claim .[.8.]. .Iadd.11 .Iaddend.including the step of utilizing a float drain in said canister to drain coalesced liquid therefrom.
10. The method set forth in claim .[.8.]. .Iadd.11 .Iaddend.including the step of positively expelling coalesced contaminants from said canister utilizing an automatic filter drain in a bottom of said canister. .Iadd.
11. The method of removing liquids from air comprising the steps of:
forming an inlet air stream;
providing an upright cylindrical housing containing coalescing material;
introducing said inlet air stream to said cylindrical housing through an inlet air conduit and thence upwardly through said coalescing material;
causing liquids contained within said air to coalesce and flow downwardly;
causing a pressure drop in a canister positioned below said housing receiving coalesced liquids by positioning a tube having one end in said canister and the other end in said inlet air stream in said conduit prior to passage through said coalescing material to create a pressure drop in said canister;
draining said liquids from a lower portion of said housing through an opening spaced laterally of said inlet air conduit with the aid of said pressure drop in the canister..Iaddend.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/038,561 USRE35433E (en) | 1990-06-20 | 1993-03-25 | Coalescer filter and method |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/541,070 US5061300A (en) | 1990-06-20 | 1990-06-20 | Coalescer filter and method |
US80818891A | 1991-12-13 | 1991-12-13 | |
US08/038,561 USRE35433E (en) | 1990-06-20 | 1993-03-25 | Coalescer filter and method |
Related Parent Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/541,070 Reissue US5061300A (en) | 1990-06-20 | 1990-06-20 | Coalescer filter and method |
US80818891A Continuation | 1990-06-20 | 1991-12-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
USRE35433E true USRE35433E (en) | 1997-01-28 |
Family
ID=27066596
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/038,561 Expired - Lifetime USRE35433E (en) | 1990-06-20 | 1993-03-25 | Coalescer filter and method |
Country Status (1)
Country | Link |
---|---|
US (1) | USRE35433E (en) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USD420117S (en) * | 1998-12-04 | 2000-02-01 | Donaldson Company, Inc. | Coalescer filter with rear plate |
US6143049A (en) | 1997-06-27 | 2000-11-07 | Donaldson Company, Inc. | Aerosol separator; and method |
US6171355B1 (en) | 1997-06-27 | 2001-01-09 | Donaldson Company, Inc. | Aerosol separator; and method |
US6187073B1 (en) | 1999-03-17 | 2001-02-13 | Donaldson Company, Inc. | Air cleaner; aerosol separator; and method |
US6290739B1 (en) | 1999-12-29 | 2001-09-18 | Donaldson Company, Inc. | Aerosol separator; and method |
US6290738B1 (en) | 1999-07-16 | 2001-09-18 | Nelson Industries, Inc. | Inertial gas-liquid separator having an inertial collector spaced from a nozzle structure |
US20050092179A1 (en) * | 2003-10-31 | 2005-05-05 | Flair Corporation | Coalescing type filter apparatus and method |
US20080087168A1 (en) * | 2006-10-11 | 2008-04-17 | New York Air Brake Corporation | Air Dryer with Pre-Filter |
US20090007787A1 (en) * | 2006-02-01 | 2009-01-08 | New York Air Brake Corporation | Air Dryer for a Brake System |
US20100089239A1 (en) * | 2008-10-13 | 2010-04-15 | New York Air Brake Corporation | Membrane air dryer |
US8968446B1 (en) * | 2014-03-06 | 2015-03-03 | UPR Products, Inc. | Oil and air separation system and method |
US20160023127A1 (en) * | 2014-07-25 | 2016-01-28 | Hanwha Techwin Co., Ltd. | Separator |
CN110559703A (en) * | 2019-08-22 | 2019-12-13 | 深圳市清泉水业股份有限公司 | water quantity balancing method for upward flow filter |
Citations (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US32989A (en) * | 1861-08-06 | Improved tool for clinching horseshoe-nails | ||
US1115505A (en) * | 1913-02-21 | 1914-11-03 | Armstrong Paint And Varnish Works | Strainer. |
US1458005A (en) * | 1921-03-24 | 1923-06-05 | Rohrer Daniel | Air-purifying device for motor-driven tire pumps |
US3130741A (en) * | 1960-11-25 | 1964-04-28 | White S Dental Mfg Co | Liquid purging systems |
US3705480A (en) * | 1970-02-06 | 1972-12-12 | Wallace M Wireman | Dehydrator for gaseous fluids |
US4131442A (en) * | 1977-04-29 | 1978-12-26 | Graham-White Sales Corporation | Pneumatic compactor for particulate desiccant |
US4487618A (en) * | 1982-08-19 | 1984-12-11 | La-Man Corporation | Airline vapor trap |
US4572725A (en) * | 1983-12-30 | 1986-02-25 | Nippon Air Brake Co., Ltd. | Air dryer device |
US4600416A (en) * | 1985-02-08 | 1986-07-15 | La-Man Corporation | Air line vapor trap |
US4801313A (en) * | 1987-04-13 | 1989-01-31 | Mann Technology Limited Partnership | Gas purification apparatus |
US4822387A (en) * | 1987-10-22 | 1989-04-18 | Reading Technologies, Inc. | Inverse flow depth filter assembly |
USRE32989E (en) | 1985-02-08 | 1989-07-18 | La-Man Corporation | Air line vapor trap |
US4848989A (en) * | 1986-08-29 | 1989-07-18 | Maeda Shell Service Co., Ltd. | In-line filter assembly for compressed air |
US4865815A (en) * | 1987-06-01 | 1989-09-12 | La-Man Corporation | In-line compressed air carbon monoxide filter |
US4874408A (en) * | 1987-11-02 | 1989-10-17 | La-Man Corporation | Liquid drain assembly |
US4897094A (en) * | 1988-04-05 | 1990-01-30 | Maeda Shell Service Co., Ltd. and J&M Co., Ltd. | In-line filter assembly for compressed air |
US4925466A (en) * | 1988-11-23 | 1990-05-15 | La-Man Corporation | Filter cartridge assembly |
US5011519A (en) * | 1988-11-24 | 1991-04-30 | Maeda Shell Service Co., Ltd. | In-line filter and trap structure device for compressed air |
US5030262A (en) * | 1987-11-02 | 1991-07-09 | La-Man Corporation | Air vapor trap and drain therefore |
US5122167A (en) * | 1989-12-26 | 1992-06-16 | Skd Pneumatics Inc. | Free-flow gas filter assembly |
-
1993
- 1993-03-25 US US08/038,561 patent/USRE35433E/en not_active Expired - Lifetime
Patent Citations (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US32989A (en) * | 1861-08-06 | Improved tool for clinching horseshoe-nails | ||
US1115505A (en) * | 1913-02-21 | 1914-11-03 | Armstrong Paint And Varnish Works | Strainer. |
US1458005A (en) * | 1921-03-24 | 1923-06-05 | Rohrer Daniel | Air-purifying device for motor-driven tire pumps |
US3130741A (en) * | 1960-11-25 | 1964-04-28 | White S Dental Mfg Co | Liquid purging systems |
US3705480A (en) * | 1970-02-06 | 1972-12-12 | Wallace M Wireman | Dehydrator for gaseous fluids |
US4131442A (en) * | 1977-04-29 | 1978-12-26 | Graham-White Sales Corporation | Pneumatic compactor for particulate desiccant |
US4487618A (en) * | 1982-08-19 | 1984-12-11 | La-Man Corporation | Airline vapor trap |
US4572725A (en) * | 1983-12-30 | 1986-02-25 | Nippon Air Brake Co., Ltd. | Air dryer device |
US4600416A (en) * | 1985-02-08 | 1986-07-15 | La-Man Corporation | Air line vapor trap |
USRE32989E (en) | 1985-02-08 | 1989-07-18 | La-Man Corporation | Air line vapor trap |
US4848989A (en) * | 1986-08-29 | 1989-07-18 | Maeda Shell Service Co., Ltd. | In-line filter assembly for compressed air |
US4801313A (en) * | 1987-04-13 | 1989-01-31 | Mann Technology Limited Partnership | Gas purification apparatus |
US4865815A (en) * | 1987-06-01 | 1989-09-12 | La-Man Corporation | In-line compressed air carbon monoxide filter |
US4822387A (en) * | 1987-10-22 | 1989-04-18 | Reading Technologies, Inc. | Inverse flow depth filter assembly |
US4874408A (en) * | 1987-11-02 | 1989-10-17 | La-Man Corporation | Liquid drain assembly |
US5030262A (en) * | 1987-11-02 | 1991-07-09 | La-Man Corporation | Air vapor trap and drain therefore |
US4897094A (en) * | 1988-04-05 | 1990-01-30 | Maeda Shell Service Co., Ltd. and J&M Co., Ltd. | In-line filter assembly for compressed air |
US4925466A (en) * | 1988-11-23 | 1990-05-15 | La-Man Corporation | Filter cartridge assembly |
US5011519A (en) * | 1988-11-24 | 1991-04-30 | Maeda Shell Service Co., Ltd. | In-line filter and trap structure device for compressed air |
US5122167A (en) * | 1989-12-26 | 1992-06-16 | Skd Pneumatics Inc. | Free-flow gas filter assembly |
Non-Patent Citations (2)
Title |
---|
Alexco, "Alexander Coalescer Filter", Alexander Machinery, Inc., Mauldin, S.C., 1989. |
Alexco, Alexander Coalescer Filter , Alexander Machinery, Inc., Mauldin, S.C., 1989. * |
Cited By (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6540801B2 (en) | 1997-06-27 | 2003-04-01 | Donaldson Company, Inc. | Aerosol separator; and method |
US6143049A (en) | 1997-06-27 | 2000-11-07 | Donaldson Company, Inc. | Aerosol separator; and method |
US6171355B1 (en) | 1997-06-27 | 2001-01-09 | Donaldson Company, Inc. | Aerosol separator; and method |
US6355076B2 (en) | 1997-06-27 | 2002-03-12 | Donaldson Company, Inc. | Aerosol separator; and method |
US6758873B2 (en) | 1997-06-27 | 2004-07-06 | Donaldson Company, Inc. | Aerosol separator and method |
US7081145B2 (en) | 1997-06-27 | 2006-07-25 | Donaldson Company, Inc. | Aerosol separator; and method |
USD420117S (en) * | 1998-12-04 | 2000-02-01 | Donaldson Company, Inc. | Coalescer filter with rear plate |
US6187073B1 (en) | 1999-03-17 | 2001-02-13 | Donaldson Company, Inc. | Air cleaner; aerosol separator; and method |
US6290738B1 (en) | 1999-07-16 | 2001-09-18 | Nelson Industries, Inc. | Inertial gas-liquid separator having an inertial collector spaced from a nozzle structure |
US20030051455A1 (en) * | 1999-12-29 | 2003-03-20 | Gieseke Steven S. | Aerosol separator and method |
US6530969B2 (en) | 1999-12-29 | 2003-03-11 | Donaldson Company, Inc. | Aerosol separator; and method |
US6852148B2 (en) | 1999-12-29 | 2005-02-08 | Donaldson Company, Inc. | Aerosol separator and method |
US20070144348A1 (en) * | 1999-12-29 | 2007-06-28 | Donaldson Company, Inc. | Aerosol separator; and method |
US7182804B2 (en) | 1999-12-29 | 2007-02-27 | Donaldson Company, Inc. | Aerosol separator; and method |
US6290739B1 (en) | 1999-12-29 | 2001-09-18 | Donaldson Company, Inc. | Aerosol separator; and method |
US20050193694A1 (en) * | 1999-12-29 | 2005-09-08 | Donaldson Company, Inc. | Aerosol separator; and method |
WO2005046827A3 (en) * | 2003-10-31 | 2005-08-18 | Flair Corp | Coalescing type filter apparatus and method |
WO2005046827A2 (en) * | 2003-10-31 | 2005-05-26 | Flair Corporation | Coalescing type filter apparatus and method |
US20050092179A1 (en) * | 2003-10-31 | 2005-05-05 | Flair Corporation | Coalescing type filter apparatus and method |
US7326266B2 (en) * | 2003-10-31 | 2008-02-05 | Flair Corporation | Coalescing type filter apparatus and method |
US8147594B2 (en) | 2006-02-01 | 2012-04-03 | New York Air Brake Corporation | Air dryer for a brake system |
US20090007787A1 (en) * | 2006-02-01 | 2009-01-08 | New York Air Brake Corporation | Air Dryer for a Brake System |
US7833307B2 (en) * | 2006-10-11 | 2010-11-16 | New York Air Brake Corporation | Air dryer with pre-filter |
US20080087168A1 (en) * | 2006-10-11 | 2008-04-17 | New York Air Brake Corporation | Air Dryer with Pre-Filter |
CN101678270B (en) * | 2007-04-17 | 2013-11-13 | 纽约气闸公司 | Air dryer with pre-filter |
US20100089239A1 (en) * | 2008-10-13 | 2010-04-15 | New York Air Brake Corporation | Membrane air dryer |
US8231699B2 (en) | 2008-10-13 | 2012-07-31 | New York Air Brake Corporation | Membrane air dryer |
US8968446B1 (en) * | 2014-03-06 | 2015-03-03 | UPR Products, Inc. | Oil and air separation system and method |
US20160023127A1 (en) * | 2014-07-25 | 2016-01-28 | Hanwha Techwin Co., Ltd. | Separator |
US9943777B2 (en) * | 2014-07-25 | 2018-04-17 | Hanwha Techwin Co., Ltd. | Separator |
CN110559703A (en) * | 2019-08-22 | 2019-12-13 | 深圳市清泉水业股份有限公司 | water quantity balancing method for upward flow filter |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5061300A (en) | Coalescer filter and method | |
USRE35433E (en) | Coalescer filter and method | |
US3572008A (en) | Methods and means for cleaning and drying compressed fluid systems | |
US3931011A (en) | Fluid separation apparatus | |
US4516994A (en) | Apparatus for separating liquid droplets from gas | |
KR101538182B1 (en) | Filter assembly and method | |
US4816146A (en) | Water and oil mixture separator | |
US7326266B2 (en) | Coalescing type filter apparatus and method | |
CA2632906C (en) | System for gas cleaning | |
CA1337474C (en) | Method for gas-liquid separation and filtration | |
US4822387A (en) | Inverse flow depth filter assembly | |
US5417848A (en) | Coalescence separator with changeable coalescence element | |
US5145497A (en) | In-line filter device for compressed air having mist filter and air collector | |
US6540926B2 (en) | Filter assembly | |
US4830056A (en) | Compressed air delivery system | |
US5196117A (en) | Apparatus for separating oil from an oil/water mixture | |
US5037454A (en) | Coalescing apparatus and method | |
JPH02139309U (en) | ||
US6495033B1 (en) | Device for separating two non-mixable liquids with different specific gravities | |
US5030262A (en) | Air vapor trap and drain therefore | |
US6206953B1 (en) | Condensate separator and collector | |
JP3338964B2 (en) | Device for separating oil from oil / water mixture | |
JPH09253436A (en) | Device for removing oil-water contained in compressed air | |
GB2251812A (en) | Oil-water separator | |
GB2260133A (en) | Apparatus for separating oil from an oil/water mixture |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
FPAY | Fee payment |
Year of fee payment: 8 |
|
AS | Assignment |
Owner name: CAROLINA FIRST BANK, SOUTH CAROLINA Free format text: SECURITY AGREEMENT;ASSIGNOR:ALEXANDER III, WILLIAM J.;REEL/FRAME:014074/0713 Effective date: 20020821 |