SE544959C2 - Filter assembly comprising a bag for filtration of particles in gas flow - Google Patents
Filter assembly comprising a bag for filtration of particles in gas flowInfo
- Publication number
- SE544959C2 SE544959C2 SE2150784A SE2150784A SE544959C2 SE 544959 C2 SE544959 C2 SE 544959C2 SE 2150784 A SE2150784 A SE 2150784A SE 2150784 A SE2150784 A SE 2150784A SE 544959 C2 SE544959 C2 SE 544959C2
- Authority
- SE
- Sweden
- Prior art keywords
- tubular
- filter assembly
- outer layer
- end portion
- inner layer
- Prior art date
Links
- 239000002245 particle Substances 0.000 title claims abstract description 12
- 238000001914 filtration Methods 0.000 title claims abstract 4
- 239000000463 material Substances 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims 1
- 230000001070 adhesive effect Effects 0.000 claims 1
- 239000002390 adhesive tape Substances 0.000 claims 1
- 230000000712 assembly Effects 0.000 claims 1
- 238000000429 assembly Methods 0.000 claims 1
- 239000000428 dust Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
- A47L9/14—Bags or the like; Rigid filtering receptacles; Attachment of, or closures for, bags or receptacles
-
- 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
- B01D46/0002—Casings; Housings; Frame constructions
- B01D46/0005—Mounting of filtering elements within casings, housings or frames
-
- 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
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
Abstract
A bag (1) for a filter for filtration of particles in a gas flow, wherein the bag (1) comprises: a tubular outer layer (2) comprising a first end portion (3) and an opposite second end portion (4), and a tubular inner layer (5) configured to extend inside the tubular outer layer (2) from an open end portion (6) of the tubular inner layer (5) at the second end portion (4) of the tubular outer layer (2) at least partly along an extent of the tubular outer layer (2), to a closed end portion (7) of the tubular inner layer (5), wherein the tubular outer layer (2) is connected to the open end portion (6) of the tubular inner layer (5), and wherein the tubular inner layer (5) and the tubular outer layer (2) are shaped and sized such that a circumferential space (8) is formed between the tubular inner layer (5) and the tubular outer layer (2).
Description
Background
industrial vacuum cleaners are commonly used to filter particles from an air stream in order to collect the particles in a receptacie. The air passing through the vacuum cleaner may pass several separation steps before being blown out of the vacuum cleaner again. An example of such a filter step is a cyclone which separates larger particles. Another separation step is usually needed to catch finer particles, if desired. Fine particles may be separated from the air stream using a suitable filter comprising a filter material chosen to only let particles smaller than a predetermined size through with the air stream, whiist larger particles than that are trapped infon the fiiter media. A challenge is to allow such filters to operate for a long time before needing to be replaced. The vacuum cleaner is sometimes designed to allow the filter to be checked 'chockad to loosen some of the particles and have them fall down in the receptacle 15. However, not all filter designs allow them to be chockad. Also, a challenge is to design the filter such that a high enough air flow is allowed to run through the filter whiäst keeping the size of the filter
smail.
Summary
An object of the invention is to provide a filter which can separate small particles, such as dust from a ooncrete polishing/grindlng process or any other type of dust normally occurring in industrial environrnents, from an airflow whilst aiåowing long lifetime of the filter before it need to be replaced. Another object of the present disclosure is to provide a filter which allows a high airflow whilst keeping the size of the filter down.
Claims (13)
1. A filter assembly (10) for filtration of particles in a gas flow, wherein the filter assembly comprises: a bag (1) for a filter for filtration of particles in a gas flow, wherein the bag (1) comprises: a tubular outer layer (2) comprising a first end portion (3) and an opposite second end portion (4), and a tubular inner layer (5) conflgured to extend inside the tubular outer layer (2) from an open end portion (6) of the tubular inner layer (5) at the second end portion (4) of the tubular outer layer (2) at least partly along an extent of the tubular outer layer (2), to a closed end portion (7) of the tubular inner layer (5), wherein the tubular outer layer (2) is connected to the open-end portion (6) of the tubular inner layer (5), and wherein the tubular inner layer (5) and the tubular outer layer (2) are shaped and sized such that a clrcurnferentlal space (8) is formed between the tubular inner layer (5) and the tubular outar layer (2), and a cage (11) configured to extend between the tubular outer layer (2) and the tubular inner layer (5) for supporting the bag (1) such that the tubular outer layer (2) is extended, wherein upon the gas flow enterlng the filter assembly (10), the tubuiar inner layer (5) is adapted to move freely in a radial direction to an axls longitudinally extending from the first end portion (3) to the second end portion (4).
2. A filter assembly (10) according to claim 1, wherein the connection between the tubular outer layer (2) and the tubular inner layer (5) is formed by a hollow disc-shaped connecting member (9) attached to the tubular outer layer (2) and to the tubular inner layer (5).
3. A filter assembly (10) according to claim 2, whereln the connecting member (9) is made from a gas penneabte fiiter material, such as needle felt.
O-PKRAV-E OL submitted 2022-4. A filter assembly (10) according to claim 3, wherein the connecting member (9) is sewn to the tubular inner layer (5) and to the tubular outer layer (2)-
5. A filter assembly (10) according to any one of claims 1-4. wherein the tubular outer layer (2) is formed from a rectangular piece of material, and wherein the tubular inner layer (5) is formed from a rectangular piece of material folded such that it is closed at its closed end portion (7).
6. A filter assembly (10) according to ciaim 5, wherein the oiosed end portion (7) of the tubular inner layer (5) is sewn closed.
7. A filter assembly (10) according any preceding claims, wherein the closed end portion (7) of the tubular inner layer (5) is provided with first attachment means (12) and wherein the cage (11) is provided with corresponding second attachment means (13) for removabiy attaching the closed end portion (7) of the tubular inner layer (5) to the cage (11) with the tubular inner layer (5)extended within the cage (11).
8. A filter assembly (10) according to claim 7, wherein the first attachment means (12) comprises a hole which is optionaily provided with an eyeiet, and wherein the second attachment means (13) comprises a hook configured to fit through the hole of the first attachment means (12).
9. A filter assembly (10) comprising a base plate (17) to which one or more filter assemblies (10) according to any preceding claims are attachable with the first end portion (3) the tubular outer layer (2) of each respective filter assembly (10) interfacing a respective hole (18) of the base plate (17), wherein the filter assembly (10) is configured to seal between each tubular outer layer (2) and the base plate (17).
O-PKRÅV-E OI. submitted 2022-06-10. A filter assembly (10) according to claim 9, wherein the first end portion (3) of the tubular outer layer (2) is provided with a resiiient ciroumferentiai rim (19) sized larger than the respective hole (18) of the base plate (17), wherein the rim (19) is provided with a oircumferentiai recess sized to allow the edge of the respective hole (18) of the base piate to extencl into the recess for engaging the rim (19) to the base plate (17).
11. A filter assembly (10) according to clairn 10, wherein the rim (19) comprises a resilient first ring (20), and a resilient second ring (21), whereln the first and second rings (20, 21) are shaped such that the circumferential recess (22) is formed between the first ring (20) and the second ring (21 ).
12. A filter assembly (10) according to claim 10, wherein the tubular outer layer (2) is configured to fit with the first ring (20) and the second ring (21) such that the first ring (20) and the second ring (21) tension the bag (1) onto the rings (20, 21).
13. A filter assembly (10) according to claim 12, wherein the first ring (20) and the second ring (21) are provided with adhesive or doubie-sided adhesive tape (23) facing the tubular outer layer (2).
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE2150784A SE544959C2 (en) | 2021-06-17 | 2021-06-17 | Filter assembly comprising a bag for filtration of particles in gas flow |
| EP22733445.5A EP4355456A1 (en) | 2021-06-17 | 2022-06-16 | Air filter device |
| PCT/EP2022/066506 WO2022263606A1 (en) | 2021-06-17 | 2022-06-16 | Air filter device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE2150784A SE544959C2 (en) | 2021-06-17 | 2021-06-17 | Filter assembly comprising a bag for filtration of particles in gas flow |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE2150784A1 SE2150784A1 (en) | 2022-12-18 |
| SE544959C2 true SE544959C2 (en) | 2023-02-07 |
Family
ID=82196423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE2150784A SE544959C2 (en) | 2021-06-17 | 2021-06-17 | Filter assembly comprising a bag for filtration of particles in gas flow |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4355456A1 (en) |
| SE (1) | SE544959C2 (en) |
| WO (1) | WO2022263606A1 (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3884659A (en) * | 1974-06-03 | 1975-05-20 | Flex Kleen Corp | Filter bag assembly for pulse jet collector |
| US4292057A (en) * | 1975-09-29 | 1981-09-29 | Flex Kleen Corp. | Top removal support for dust collector bags |
| SE451862B (en) * | 1985-01-22 | 1987-11-02 | Soederhamn Ind Arbetshygien Ab | Dust separator |
| US5308369A (en) * | 1993-04-28 | 1994-05-03 | Griffin Environmental Company, Inc. | Snap-in filter bag assembly for bottom loading in dust collector |
| GB2307426A (en) * | 1995-11-23 | 1997-05-28 | Scapa Group Plc | Filter sleeve |
| US20090255226A1 (en) * | 2007-11-09 | 2009-10-15 | E. I. Du Pont De Nemours And Company | Thermally stabilized bag house filters and media |
| CN102151442A (en) * | 2011-03-22 | 2011-08-17 | 孙伟东 | Integral dust-removal filtering bag with internal and external filtering double-bag sleeve structure |
| CN104117249B (en) * | 2013-04-27 | 2016-04-27 | 辽宁万和环保产业有限公司 | A kind of concentric hollow dedusting filtering bag |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE786209A (en) * | 1971-07-16 | 1973-01-15 | Summit Filter Corp | Double walled filter bag - provides increased area in given volume esp for air filter |
| US3850594A (en) * | 1971-07-16 | 1974-11-26 | Summit Filter Corp | Filtering method utilizing a double-wall filter bag construction |
| KR100790334B1 (en) * | 2007-06-22 | 2008-01-03 | 주식회사 신성플랜트 | Filter bag using in a dust-collector |
| CN111482014B (en) * | 2020-03-18 | 2022-12-20 | 江苏东方滤袋股份有限公司 | Prevent electrostatic precipitator filter bag |
| CN111544973B (en) * | 2020-04-07 | 2021-10-29 | 东南大学 | Bag bottom reinforced filter bag dust removal method with variable inner channel and filter device |
-
2021
- 2021-06-17 SE SE2150784A patent/SE544959C2/en unknown
-
2022
- 2022-06-16 WO PCT/EP2022/066506 patent/WO2022263606A1/en active Application Filing
- 2022-06-16 EP EP22733445.5A patent/EP4355456A1/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3884659A (en) * | 1974-06-03 | 1975-05-20 | Flex Kleen Corp | Filter bag assembly for pulse jet collector |
| US4292057A (en) * | 1975-09-29 | 1981-09-29 | Flex Kleen Corp. | Top removal support for dust collector bags |
| SE451862B (en) * | 1985-01-22 | 1987-11-02 | Soederhamn Ind Arbetshygien Ab | Dust separator |
| US5308369A (en) * | 1993-04-28 | 1994-05-03 | Griffin Environmental Company, Inc. | Snap-in filter bag assembly for bottom loading in dust collector |
| GB2307426A (en) * | 1995-11-23 | 1997-05-28 | Scapa Group Plc | Filter sleeve |
| US20090255226A1 (en) * | 2007-11-09 | 2009-10-15 | E. I. Du Pont De Nemours And Company | Thermally stabilized bag house filters and media |
| CN102151442A (en) * | 2011-03-22 | 2011-08-17 | 孙伟东 | Integral dust-removal filtering bag with internal and external filtering double-bag sleeve structure |
| CN104117249B (en) * | 2013-04-27 | 2016-04-27 | 辽宁万和环保产业有限公司 | A kind of concentric hollow dedusting filtering bag |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022263606A1 (en) | 2022-12-22 |
| SE2150784A1 (en) | 2022-12-18 |
| EP4355456A1 (en) | 2024-04-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20040107530A1 (en) | Cyclone-type dust collecting apparatus for vacuum cleaner | |
| US8979964B2 (en) | Efficiency-improved multiple bellows filter | |
| JP4387461B2 (en) | Apparatus for separating particles from fluid and valve for introducing bleed fluid into the mainstream | |
| EP1714703B1 (en) | Cyclonic filter assembly and dust collecting apparatus having the same | |
| US7655062B2 (en) | Filter assembly for a vacuum cleaner | |
| US5733351A (en) | Two stage vacuum cleaner filter | |
| EP0928594B8 (en) | Upright vacuum cleaner with cyclonic airflow | |
| US8012226B2 (en) | Air separator and purifier device | |
| CA2355226A1 (en) | Upright vacuum cleaner with cyclonic airflow | |
| US4217118A (en) | Air intake filter with cyclone separator stage and dust collection pan | |
| US4486206A (en) | Cyclone type air cleaner | |
| US20210354069A1 (en) | Air filter assembly with a permeable baffle | |
| US2276844A (en) | Vacuum cleaner | |
| SE544959C2 (en) | Filter assembly comprising a bag for filtration of particles in gas flow | |
| US4256473A (en) | Filter bag attaching means | |
| WO1999055444A1 (en) | Cartridge filter | |
| JP3172934U (en) | Cyclone dust collector and electric vacuum cleaner using the same | |
| US20180147525A1 (en) | Cylindrical air cleaner for internal combustion engine | |
| US2100374A (en) | Filtering assembly for respirators | |
| US20120324844A1 (en) | Filter assembly for use in a baghouse | |
| CN112205921B (en) | Vacuum cleaner | |
| CN211212926U (en) | Cyclone separation part, dust-gas separation device and dust collector | |
| CA2551200A1 (en) | Vacuum cleaner having hose detachable at nozzle | |
| CN115135212A (en) | Cleaning device | |
| CN109186070A (en) | A kind of filter core for air humidifier |