WO2013074014A1 - An arrangement for cleaning of an intake air filter - Google Patents
An arrangement for cleaning of an intake air filter Download PDFInfo
- Publication number
- WO2013074014A1 WO2013074014A1 PCT/SE2012/000186 SE2012000186W WO2013074014A1 WO 2013074014 A1 WO2013074014 A1 WO 2013074014A1 SE 2012000186 W SE2012000186 W SE 2012000186W WO 2013074014 A1 WO2013074014 A1 WO 2013074014A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- intake
- air
- intake air
- air filter
- space
- Prior art date
Links
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
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/90—Cleaning of purification apparatus
-
- 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
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/68—Regeneration of the filtering material or filter elements inside the filter by means acting on the cake side involving movement with regard to the filter elements
- B01D46/681—Regeneration of the filtering material or filter elements inside the filter by means acting on the cake side involving movement with regard to the filter elements by scrapers, brushes or the like
-
- 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
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/69—Regeneration of the filtering material or filter elements inside the filter by means acting on the cake side without movement with respect to the filter elements, e.g. fixed nozzles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
- F24F1/0047—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in the ceiling or at the ceiling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/28—Arrangement or mounting of filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2279/00—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses
- B01D2279/50—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses for air conditioning
Definitions
- the present invention refers to an arrangement for cleaning of an intake air filter and a screen in a ventilation unit, said unit ventilates a space by aid of said intake air filter, on or in said filter dust /pa rt i cl es in the air coming from said space after a time are gathered at its air intake side.
- One object of the present invention is to eliminate those drawbacks existing with the structures mentioned above in providing a blow-off nozzle, which at predetermined period of times, when nobody would be disturbed e.g. during night time, is cleaning off said intake air filter, when there is only little, almost hardly no dust /part icles on the same, which will be easy, so that the intake air filter always will be free from said dus t /part icl es before the same will be damaged .
- a ventilating unit which ventilates a space, e.g. a hotel room having indoor air, which is sucked in through an intake air filter.
- a space e.g. a hotel room having indoor air
- said intake air filer and the screen of the ventilating unit is cleaned in a simple an inexpensive way with a minimum of maintenance.
- the intake side of the intake air filter is faced towards said space and often there is a screen in front of the intake air filter in a distance from said intake side, which often extends mainly in parallel with the same in order to mechanically protect said intake side.
- a blow-off nozzle is provided at said intake side within a predetermined distance to said screen.
- the blow-off nozzle is connected to a separate suction fan, which sucks in air from outside in order to blow out said air through the blow-off nozzle over said intake side in order to remove the dust/ particles from the intake side and the inside of said screen, the same thereafter can fall out from the ventilating unit and into the space.
- the ventilation unit is shut off.
- the suction fan is started in order to blow away a very small amount of dust /particles , which during a short period of time e.g.
- Fig.l shows a vertical cross-section through a ventilation unit having a horizontal intake air filter provided in a ceiling
- Fig.2 shows a horizontal cross-section through a ventilation unit having a horizontal intake air filter provided in a ceiling and
- Fig.3 shows a vertical cro s s - s e ct i on through a part of a ventilation unit having a vertical intake air filter provided in a ceiling.
- an intake air filter 1 is illustrated in a ventilation unit 2, having e.g. a heat exchanger and is located in a ceiling 19 and said heat exchanger ventilates a space 3 through said intake air filter 1, in which dust /part icles 4 from said space 3 are caught in its intake side 5 and against a screen 6, provided in front of the intake air filter 1 at a distance 7 from the intake side 5.
- a blow-off nozzle 8 is provided, which is coupled to a separate intake air fan 15, which sucks in fresh air 9 existing outside said space 3 for blowing this air 9 through said blow-off nozzle 8 out over the intake side 5 in order to blow away said dust /particles 4 from the intake side 5 and screen 6.
- the intake air fan 15 is in a preferred embodiment example of the present invention mounted preferably on the top of the ventilation unit 2 outside the space 3, which does not contain dust/ particles from the space 3.
- the intake air filter 1 consists of sheet means 18, which has an edge area 13. At this edge area 13 the intake air filter 1 is detachably fixed under the intake side 5.
- the sheet means 18 is e.g. rectangular, round or having unequal sides and is mainly parallel to the intake side 5.
- the intake air fan 15 sucks in the air 9 through a hose or a tube 16 and blows out the air 9 through said blow-off nozzle 8 in a direction over the intake air filter 1.
- the blow-off nozzle 8 is arranged at the edge area 13 in a corner 14 of the intake air filter 1, which is rectangular.
- the blow-off nozzle 8 has a number of nipples 10, which direct the air 9 in a number of air jets 11 in predetermined directions 12, which extend in parallel with the intake side 5, so that the air jets 11 divide the air 9 in order to create a turbulence air stream, which works optimally divided mainly out over the whole intake side 5 and screen 6 with a pressure of about 10-50 Pa in order to direct the air jet 11 also up to places more difficult to reach, such as e.g. the edge area 13.
- the intake air fan 15 is built together with said blow-off nozzle 8 into one and the same unit, into said unit the hose or tube 16 extends from the unit to a fixation point for the end of the hose or tube 16, said end is mounted on the top of the ventilation unit 2, from where the end of the hose or tube 16 sucks in said air 9.
- FIG. 3 a variant of the invention is illustrated, in which the intake air filter 1 is vertically situated, so that the dust /particles 4 can fall out into the space 3 through an opening 17 intended for that purpose, said opening 17 having a horizontally situated screen 6.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The present invention refers to an arrangement for cleaning of an intake air filter (1) in a ventilation unit (2) comprising e.g. a heat exchanger, which ventilates a space (3) with indoor air, e.g. a hotel room, said air is sucked in through said intake air filter (1), on which dust/particles (4) from said space (3) after a period of time are gathered on an intake side (5) of the intake air filter (1), said intake side (5) is turned directly towards the space (3) and sometimes indirectly towards a screen (6), provided in connection to said intake air filter (1) in a predetermined distance (7) from the intake side (5). Within said distance (7) at least one blow-off nozzle (8) is provided, which is connected to a separate intake air fan (15), which sucks in air (9) being outside said space (3) and outside the ventilation unit (2) through a hose or tube (16) for blowing the sucked- in air (9) through the blow-off nozzle (8) out over the intake side (5) of the intake air filter (1) in order to remove the dust /particles (4) from the intake side (5) and/or the screen (6) and allowing said dust/particles (4) to fall out from the ventilation unit (2) and into said space (3).
Description
An arrangement for cleaning of an intake air filter
The present invention refers to an arrangement for cleaning of an intake air filter and a screen in a ventilation unit, said unit ventilates a space by aid of said intake air filter, on or in said filter dust /pa rt i cl es in the air coming from said space after a time are gathered at its air intake side.
In this type of today on the market existing structures dust and particles in the air from said space are gathered after a time on an air intake filter in such large amounts, that it will be more or less filled up, so that its function decreases or is totally ceased. The dust /part i cle s in this case fills up the intake filter in such an extent and loads the ventilation units, so that they will work more and more bad until they stop functioning. This creates big problems why the ventilation function often must be maintained and repaired for large sums of money. Often it is difficult to reach into the actual ventilation unit in order to clean it where motors and heat exchanger must be replaced. Many things are placed in said space, e.g. in a department store, which stand in the way and therefore must be moved. It is known before to remove dust /part icles from an air intake filter according to the document W02006 / 051740 Al, in which dust is sucked away from a filter. This creates problems since the collected dust must be emptied out from a receptacle, which is covered by a screen, said screen creates extra work. In document US2010 / 0199697 the dust is mechanically removed by a complicated expansive means, which is difficult to give service and which sometimes
must be vacuum-cleaned. These two documents both illustrate structures , which requires very much service.
One object of the present invention is to eliminate those drawbacks existing with the structures mentioned above in providing a blow-off nozzle, which at predetermined period of times, when nobody would be disturbed e.g. during night time, is cleaning off said intake air filter, when there is only little, almost hardly no dust /part icles on the same, which will be easy, so that the intake air filter always will be free from said dus t /part icl es before the same will be damaged .
Thanks to the invention an arrangement in a ventilating unit has been provided, which ventilates a space, e.g. a hotel room having indoor air, which is sucked in through an intake air filter. At predetermined periods of time said intake air filer and the screen of the ventilating unit is cleaned in a simple an inexpensive way with a minimum of maintenance. The intake side of the intake air filter is faced towards said space and often there is a screen in front of the intake air filter in a distance from said intake side, which often extends mainly in parallel with the same in order to mechanically protect said intake side. According to the invention a blow-off nozzle is provided at said intake side within a predetermined distance to said screen. The blow-off nozzle is connected to a separate suction fan, which sucks in air from outside in order to blow out said air through the blow-off nozzle over said intake side in order to remove the dust/ particles from the intake side and the inside of said screen, the same thereafter can fall out from the ventilating unit and
into the space. During frequent occasions e.g. once a night, when persons are not disturbed by said cleaning of said intake side and screen, the ventilation unit is shut off. During this time period the suction fan is started in order to blow away a very small amount of dust /particles , which during a short period of time e.g. twenty-four hours have been gathered, which then are blown out from the ventilation unit and into the space, where said dust /particles hardly can be seen. These dus t /part i cles are of course cleaned away at regular intervals during normal cleaning of said space. Therefore the intake side and the screen is only maximum exposed to a very small amount of dust/ particles, which not in any way deteriorate the function of the ventilation unit.
The invention is described closer below by aid of some preferred embodiment examples, in which
Fig.l shows a vertical cross-section through a ventilation unit having a horizontal intake air filter provided in a ceiling,
Fig.2 shows a horizontal cross-section through a ventilation unit having a horizontal intake air filter provided in a ceiling and
Fig.3 shows a vertical cro s s - s e ct i on through a part of a ventilation unit having a vertical intake air filter provided in a ceiling.
As can be seen from Fig. 1 and 2 an intake air filter 1 is illustrated in a ventilation unit 2, having e.g. a heat exchanger and is located in a ceiling 19 and said
heat exchanger ventilates a space 3 through said intake air filter 1, in which dust /part icles 4 from said space 3 are caught in its intake side 5 and against a screen 6, provided in front of the intake air filter 1 at a distance 7 from the intake side 5. Within said distance 7 a blow-off nozzle 8 is provided, which is coupled to a separate intake air fan 15, which sucks in fresh air 9 existing outside said space 3 for blowing this air 9 through said blow-off nozzle 8 out over the intake side 5 in order to blow away said dust /particles 4 from the intake side 5 and screen 6. The intake air fan 15 is in a preferred embodiment example of the present invention mounted preferably on the top of the ventilation unit 2 outside the space 3, which does not contain dust/ particles from the space 3. The intake air filter 1 consists of sheet means 18, which has an edge area 13. At this edge area 13 the intake air filter 1 is detachably fixed under the intake side 5. The sheet means 18 is e.g. rectangular, round or having unequal sides and is mainly parallel to the intake side 5. The intake air fan 15 sucks in the air 9 through a hose or a tube 16 and blows out the air 9 through said blow-off nozzle 8 in a direction over the intake air filter 1. The blow-off nozzle 8 is arranged at the edge area 13 in a corner 14 of the intake air filter 1, which is rectangular. In order to create an effective blowing off, the air 9 is blown out over the whole intake side 5 and the whole inside of the screen 6. The blow-off nozzle 8 has a number of nipples 10, which direct the air 9 in a number of air jets 11 in predetermined directions 12, which extend in parallel with the intake side 5, so that the air jets 11 divide the air 9 in order to create a turbulence air stream, which works optimally divided mainly out over the whole intake side
5 and screen 6 with a pressure of about 10-50 Pa in order to direct the air jet 11 also up to places more difficult to reach, such as e.g. the edge area 13.
According to another embodiment example of the invention the intake air fan 15 is built together with said blow-off nozzle 8 into one and the same unit, into said unit the hose or tube 16 extends from the unit to a fixation point for the end of the hose or tube 16, said end is mounted on the top of the ventilation unit 2, from where the end of the hose or tube 16 sucks in said air 9.
As can be seen from Fig. 3 a variant of the invention is illustrated, in which the intake air filter 1 is vertically situated, so that the dust /particles 4 can fall out into the space 3 through an opening 17 intended for that purpose, said opening 17 having a horizontally situated screen 6.
Claims
An arrangement for cleaning of an intake air filter (1) in a ventilation unit (2) comprising e.g. a heat exchanger, which ventilates a space
(3) with indoor air, e.g. a hotel room, said air is sucked in through said intake air filter (1), on which dust /part icles (4) from said space (3) after a period of time are gathered on an intake side (5) of the intake air filter (1), said intake side (5) is turned directly towards the space (3) and sometimes indirectly towards a screen (6), provided in connection to said intake air filter (1) in a predetermined distance (7) from the intake side (5), characterized in that within said distance (7) at least one blow-off nozzle (8) is provided, which is connected to a separate intake air fan (15), which sucks in air (9) being outside said space (3), outside the ventilation unit (2) itself, through a hose or tube (16) for blowing the sucked in air (9) through the blow-off nozzle (8) out over the intake side (5) of the intake air filter (1) in order to remove the dust /part icles
(4) from the intake side (5) and/or the screen (6) and allowing said dus t /pa rt i cles (4) thereafter to fall out from the ventilation unit (2) and into said space ( 3 ) .
An arrangement according to claim 1, characterized in that the intake air fan (15) is mounted on the ventilation unit (2) outside said space ( 3 ) .
An arrangement according to claim 1, characterized in that the intake air filter (1) consists of a sheet means (18) having an edge area (13), said sheet means (18) is e.g. rectangular, round or having unequal sides and which is mainly parallel to the intake side (5) .
An arrangement according to claim 1, characterized in that the intake air filter (1) is mainly vertically situated in order to allow the dust /particles to fall out through an opening (17) intended for that purpose and said opening (17) comprises a screen raster (6) .
An arrangement according to claim 1, characterized in that the intake air fan (15) is built together with said blow-off nozzle (8) to an unit, said hose or tube (16) in that case extends from the unit up to the fixing point for its end, which is mounted on the top of the ventilation unit ( 2 ) .
An arrangement according to claim 1, characterized in that the blow-off nozzle (8) comprises at least one nipple (10), which directs the air (9) in at least one air jet (11) in at least one predetermined direction (12).
An arrangement according to claim 3, characterized in that the blow-off nozzle (8) is provided at the edge area (13), in a corner (14) of said intake air filter (1) in order to blow said air (9) out over mainly the whole intake side (5) and the whole inside of the screen (6) .
8. An arrangement according to claim 6, characterized in that a number of nipples (10) are provided to direct the air jets (11) in different predetermined directions (12), which are mainly parallel to the intake side (5), so that the air jets (11) split up the air (9) in order to create a turbulent air stream.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE1100855-4 | 2011-11-16 | ||
| SE1100855A SE536433C2 (en) | 2011-11-16 | 2011-11-16 | Device for cleaning at an intake filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2013074014A1 true WO2013074014A1 (en) | 2013-05-23 |
| WO2013074014A4 WO2013074014A4 (en) | 2013-07-11 |
Family
ID=48429951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/SE2012/000186 WO2013074014A1 (en) | 2011-11-16 | 2012-11-15 | An arrangement for cleaning of an intake air filter |
Country Status (2)
| Country | Link |
|---|---|
| SE (1) | SE536433C2 (en) |
| WO (1) | WO2013074014A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105042706A (en) * | 2015-06-24 | 2015-11-11 | 嘉兴奥塔尔电气科技有限公司 | Ceiling embedded integrated air conditioner |
| CN109364597A (en) * | 2018-12-05 | 2019-02-22 | 北京诺曼斯佰环保科技有限公司 | Clearing apparatus on gas solid separation interface |
| CN109869828A (en) * | 2019-01-28 | 2019-06-11 | 高密市人民医院 | A kind of public clinical air cleaning decontamination equipment of hospital |
| CN114183831A (en) * | 2021-12-16 | 2022-03-15 | 东莞市净诺环境科技股份有限公司 | Energy-saving domestic furred ceiling new fan device based on frequency conversion technique |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113069847B (en) * | 2021-04-26 | 2022-10-25 | 阿克陶县诚鑫路桥有限责任公司 | Building site dust collector |
| CN114870527B (en) * | 2022-06-13 | 2024-01-23 | 常熟市飞奥压力容器制造有限公司 | Self-cleaning gas filter |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1407293A1 (en) * | 1959-04-17 | 1972-08-31 | Ltg Lufttechnische Gmbh | Device for collecting and separating fluff and dust in the exhaust duct of ventilation or air conditioning systems in textile plants, in particular spinning mills and weaving mills |
| DE19718892A1 (en) * | 1997-05-03 | 1998-11-05 | Werner Gorzawski Gmbh | Suction-type, dry process, air filter for use with woodworking machinery |
| DE19915235A1 (en) * | 1999-04-03 | 2000-10-05 | Rieter Ag Maschf | Ventilation plant for cooling a textile machine, has compressed air jet arrangement to clean filter automatically |
| WO2006051740A1 (en) * | 2004-11-10 | 2006-05-18 | Matsushita Electric Industrial Co., Ltd. | Air conditioner having indoor unit with automatic air filter cleaning function |
| US20070000219A1 (en) * | 2005-06-30 | 2007-01-04 | Park Chan J | Air purifier |
| EP1826501A1 (en) * | 2004-10-27 | 2007-08-29 | Matsushita Electric Industrial Co., Ltd. | Air conditioning apparatus provided with indoor unit having air filter automatic cleaning function |
| WO2009087979A1 (en) * | 2008-01-10 | 2009-07-16 | Daikin Industries, Ltd. | Indoor unit for air conditioner |
-
2011
- 2011-11-16 SE SE1100855A patent/SE536433C2/en not_active IP Right Cessation
-
2012
- 2012-11-15 WO PCT/SE2012/000186 patent/WO2013074014A1/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1407293A1 (en) * | 1959-04-17 | 1972-08-31 | Ltg Lufttechnische Gmbh | Device for collecting and separating fluff and dust in the exhaust duct of ventilation or air conditioning systems in textile plants, in particular spinning mills and weaving mills |
| DE19718892A1 (en) * | 1997-05-03 | 1998-11-05 | Werner Gorzawski Gmbh | Suction-type, dry process, air filter for use with woodworking machinery |
| DE19915235A1 (en) * | 1999-04-03 | 2000-10-05 | Rieter Ag Maschf | Ventilation plant for cooling a textile machine, has compressed air jet arrangement to clean filter automatically |
| EP1826501A1 (en) * | 2004-10-27 | 2007-08-29 | Matsushita Electric Industrial Co., Ltd. | Air conditioning apparatus provided with indoor unit having air filter automatic cleaning function |
| WO2006051740A1 (en) * | 2004-11-10 | 2006-05-18 | Matsushita Electric Industrial Co., Ltd. | Air conditioner having indoor unit with automatic air filter cleaning function |
| US20070000219A1 (en) * | 2005-06-30 | 2007-01-04 | Park Chan J | Air purifier |
| WO2009087979A1 (en) * | 2008-01-10 | 2009-07-16 | Daikin Industries, Ltd. | Indoor unit for air conditioner |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105042706A (en) * | 2015-06-24 | 2015-11-11 | 嘉兴奥塔尔电气科技有限公司 | Ceiling embedded integrated air conditioner |
| CN109364597A (en) * | 2018-12-05 | 2019-02-22 | 北京诺曼斯佰环保科技有限公司 | Clearing apparatus on gas solid separation interface |
| CN109869828A (en) * | 2019-01-28 | 2019-06-11 | 高密市人民医院 | A kind of public clinical air cleaning decontamination equipment of hospital |
| CN109869828B (en) * | 2019-01-28 | 2021-01-12 | 来丽萍 | Air purification degassing unit that hospital's public ward was used |
| CN114183831A (en) * | 2021-12-16 | 2022-03-15 | 东莞市净诺环境科技股份有限公司 | Energy-saving domestic furred ceiling new fan device based on frequency conversion technique |
Also Published As
| Publication number | Publication date |
|---|---|
| SE536433C2 (en) | 2013-10-29 |
| WO2013074014A4 (en) | 2013-07-11 |
| SE1100855A1 (en) | 2013-05-17 |
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