GB2206295A - Combined high-efficiency filter and activated carbon filter - Google Patents
Combined high-efficiency filter and activated carbon filter Download PDFInfo
- Publication number
- GB2206295A GB2206295A GB08715714A GB8715714A GB2206295A GB 2206295 A GB2206295 A GB 2206295A GB 08715714 A GB08715714 A GB 08715714A GB 8715714 A GB8715714 A GB 8715714A GB 2206295 A GB2206295 A GB 2206295A
- Authority
- GB
- United Kingdom
- Prior art keywords
- filter
- casing
- combined
- activated carbon
- spigots
- 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.)
- Granted
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 239000002184 metal Substances 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 230000002787 reinforcement Effects 0.000 claims description 2
- 239000006261 foam material Substances 0.000 claims 1
- 238000003466 welding Methods 0.000 claims 1
- 238000007789 sealing Methods 0.000 abstract description 4
- 229920005830 Polyurethane Foam Polymers 0.000 abstract description 2
- 239000011496 polyurethane foam Substances 0.000 abstract description 2
- 230000001413 cellular effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
-
- 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
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
- B01D46/12—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces in multiple arrangements
-
- 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
- B01D46/30—Particle separators, e.g. dust precipitators, using loose filtering material
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
A high-efficiency pleated paper filter (12) and activated carbon filters 16 and 18 are arranged in a tubular casing (10), provided with spigots formed by two rings (22, 24) attached to the end faces of the casing and arranged to be received in a passage of circular section such as the inlet or outlet of a fan casing, there being flat annular flexible seals located in the rings serving to make sealing contact with the passge walls. A further filter element of two ply polyurethane foam (32) may be incorporated in one or both rings. <IMAGE>
Description
Combined High-efficiency Fluid Filter and Activated Carbon
Filter
This invention relates to a combined highefficiency fluid filter and activated carbon filter.
Broadly, the invention is directed to a filter having a casing which contains a hi#h-efficiency fluid filter and a divided-bed activated carbon filter with spigots on the filter casing arranged to be received in receiving means of circular section, there being annular flexible seals on the outer peripheral surfaces of the spigots.
An example of a filter in accordance with the invention is shown in the accompanying drawings, in which
Figure 1 is a vertical section through the filter;
Figure 2 is an end view of the filter; and,
Figure 3 is an enlarged view of part of Figure 1.
The filter shown in the'drawing serves to filter contaminants from an air stream or other gaseous stream. It comprises a rectangular casing 10 made of a synthetic plastics material or metal which contains a high-efficiency filter 12 having a filtering medium of pleated filter paper, and a divided-bed activated carbon filter 14 composed of two planar beds 16 and 18 each formed of off-set layers of cellular material with the cells containing activated carbon particles as shown at 20. Preferably, the axes of the cells in adjacent layers in both the beds 16 and 18 extend in different directions when the planar beds are viewed from one or other of their two sides.
In order to provide a good seal at the peripheries of the two filters 12 and 14, it is preferred that those peripheries be embedded in a resin sealing compound which is moulded on to form the rectangular casing 10 of the filter.
The two end faces of the casing 10 have circular apertures cut in them which are bounded or framed by two rings 22 and 24 attached to those faces. As shown in Figure 3, an annular metal key 26 of L-section is spot welded onto each end face of the casing 10, whereupon the respective ring 22 or 24 is moulded onto that key by using a resin material. This ensures a secure connection between each ring and the respective end face of the casing.
An annular groove 28 is formed in the peripheral portion of each ring 22 and 24, and projecting from this groove is an annular disk-like flexible sealing member 30 which serves to make sealing contact with a receiving member of circular section which receives a respective one of the two rings 22 and 24. These receiving members may comprise ducts, the inlet or outlet of a fan casing or some other holding means with which the filter is to be used.
As shown in Figure 1, the ring 22 serves to receive a circular filter element 32 composed of two layers of polyurethane foam material which are bonded face to face with a metal grille 34 serving as a reinforcement between them. Alternatively, or in addition, such a filter element can equally well be mounted in the ring 24.
Claims (8)
1. A combined high-efficiency fluid filter and divided-bed activated carbon filter both arranged in a filter casing, the filter casing having spigots arranged to be received in receiving means of circular section with annular flexible seals being provided on the outer peripheral surfaces of the spigots.
2. A combined filter according to claim 1, in which the two spigots are formed at the two ends of the casing.
3. A combined filter according to claim 1 or claim 2, in which the spigots are formed by rings which are attached to the end faces of the casing.
4. A combined filter according to claim 3, in which an annular metal key is attached by welding to each end face of the casing, the respective ring being moulded out of a resin material on to the key.
5. A combined filter according to claim 3 or any claim appendant thereto, in which one or both of the rings supports within itself a circular filter element additional to the high-efficiency fluid filter and the activated carbon filter.
6. A combined filter according to claim 5, in which the circular filter element supported by the ring or each ring is composed of two layers of synthetic plastics foam material which are bonded face to face with a metal grille serving as a reinforcement between them.
7. A combined filter according to claim 4 or any claim appendant thereto, in which the annular metal key is of Lsection so as to provide a secure connection between the ring and the respective end face of the casing.
8. A combined filter substantially as described herein with reference to the accompanying drawing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8715714A GB2206295B (en) | 1987-07-03 | 1987-07-03 | Combined high-efficiency fluid filter and activated carbon filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8715714A GB2206295B (en) | 1987-07-03 | 1987-07-03 | Combined high-efficiency fluid filter and activated carbon filter |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8715714D0 GB8715714D0 (en) | 1987-08-12 |
| GB2206295A true GB2206295A (en) | 1989-01-05 |
| GB2206295B GB2206295B (en) | 1991-03-27 |
Family
ID=10620062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8715714A Expired - Lifetime GB2206295B (en) | 1987-07-03 | 1987-07-03 | Combined high-efficiency fluid filter and activated carbon filter |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2206295B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2240488A (en) * | 1990-01-31 | 1991-08-07 | Daimler Benz Ag | Air-conditioning filter arrangement |
| DE4116252A1 (en) * | 1991-05-17 | 1992-11-19 | Luft & Trockentechnik | FILTER UNIT FOR SPRAY AND DRY SYSTEMS |
| EP0608034A1 (en) | 1993-01-19 | 1994-07-27 | CARBON HEALTHFILTER V.o.f. | Filter device |
| US5338253A (en) * | 1990-12-16 | 1994-08-16 | Behr Gmbh & Co. | Filter for an air-conditioning or heating system for a motor vehicle |
| RU2156644C1 (en) * | 2000-02-11 | 2000-09-27 | Государственное унитарное предприятие "Электростальское научно-производственное объединение "Неорганика" | Absorption filter for removal of injurious substances from air |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1417528A (en) * | 1973-12-28 | 1975-12-10 | Suzuki Co Ltd Y | Air cleaning device |
| GB1421651A (en) * | 1972-01-13 | 1976-01-21 | Hoffmann La Roche | Filters for breathing equipment |
| GB1456231A (en) * | 1973-02-28 | 1976-11-24 | Secr Defence | Adsorptive devices |
| EP0132095A2 (en) * | 1983-07-15 | 1985-01-23 | United Kingdom Atomic Energy Authority | Fluid filter element |
| GB2150461A (en) * | 1983-12-01 | 1985-07-03 | Marshall D A G | Air filter |
| GB2164870A (en) * | 1984-10-02 | 1986-04-03 | Marshall D A G | Fluid filter |
-
1987
- 1987-07-03 GB GB8715714A patent/GB2206295B/en not_active Expired - Lifetime
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1421651A (en) * | 1972-01-13 | 1976-01-21 | Hoffmann La Roche | Filters for breathing equipment |
| GB1456231A (en) * | 1973-02-28 | 1976-11-24 | Secr Defence | Adsorptive devices |
| GB1417528A (en) * | 1973-12-28 | 1975-12-10 | Suzuki Co Ltd Y | Air cleaning device |
| EP0132095A2 (en) * | 1983-07-15 | 1985-01-23 | United Kingdom Atomic Energy Authority | Fluid filter element |
| GB2150461A (en) * | 1983-12-01 | 1985-07-03 | Marshall D A G | Air filter |
| GB2164870A (en) * | 1984-10-02 | 1986-04-03 | Marshall D A G | Fluid filter |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2240488A (en) * | 1990-01-31 | 1991-08-07 | Daimler Benz Ag | Air-conditioning filter arrangement |
| DE4002754A1 (en) * | 1990-01-31 | 1991-08-08 | Daimler Benz Ag | FILTER ARRANGEMENTS USED IN THE AIR FLOW OF A HEATING OR AIR CONDITIONING OF A MOTOR VEHICLE |
| US5076821A (en) * | 1990-01-31 | 1991-12-31 | Mercedes-Benz Ag | Filter arrangement inserted in the intake airflow of a heating or air-conditioning system of a motor vehicle |
| GB2240488B (en) * | 1990-01-31 | 1993-09-08 | Daimler Benz Ag | Filter arrangement in the intake airflow of a heating or air-conditioning system of a motor vehicle |
| US5338253A (en) * | 1990-12-16 | 1994-08-16 | Behr Gmbh & Co. | Filter for an air-conditioning or heating system for a motor vehicle |
| DE4116252A1 (en) * | 1991-05-17 | 1992-11-19 | Luft & Trockentechnik | FILTER UNIT FOR SPRAY AND DRY SYSTEMS |
| EP0608034A1 (en) | 1993-01-19 | 1994-07-27 | CARBON HEALTHFILTER V.o.f. | Filter device |
| RU2156644C1 (en) * | 2000-02-11 | 2000-09-27 | Государственное унитарное предприятие "Электростальское научно-производственное объединение "Неорганика" | Absorption filter for removal of injurious substances from air |
Also Published As
| Publication number | Publication date |
|---|---|
| GB8715714D0 (en) | 1987-08-12 |
| GB2206295B (en) | 1991-03-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PE20 | Patent expired after termination of 20 years |
Effective date: 20070702 |