EP2309197A1 - Rauchzimmer - Google Patents

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Publication number
EP2309197A1
EP2309197A1 EP09734950A EP09734950A EP2309197A1 EP 2309197 A1 EP2309197 A1 EP 2309197A1 EP 09734950 A EP09734950 A EP 09734950A EP 09734950 A EP09734950 A EP 09734950A EP 2309197 A1 EP2309197 A1 EP 2309197A1
Authority
EP
European Patent Office
Prior art keywords
room
ceiling
air
ventilation
smoking
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.)
Withdrawn
Application number
EP09734950A
Other languages
English (en)
French (fr)
Other versions
EP2309197A4 (de
Inventor
Takeshi Matsumura
Masafumi Tarora
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Japan Tobacco Inc
Original Assignee
Japan Tobacco Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Japan Tobacco Inc filed Critical Japan Tobacco Inc
Publication of EP2309197A1 publication Critical patent/EP2309197A1/de
Publication of EP2309197A4 publication Critical patent/EP2309197A4/de
Withdrawn legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • 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
    • F24F8/95—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying specially adapted for specific purposes
    • F24F8/97—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying specially adapted for specific purposes for removing tobacco smoke
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F2007/004—Natural ventilation using convection

Definitions

  • the present invention relates to a smoking room.
  • any smoking room has a very large ventilation flow in order to exhaust tobacco smoke promptly (Criteria for separation of smoking areas issued by the Japanese Ministry of Health, Labour and Welfare and the like). It is therefore supposed that a generally known ventilation system is applied to smoking rooms.
  • a mixing ventilation system As systems for the air-conditioning and ventilation of the room inside, a mixing ventilation system, an underfloor ventilation system, a displacement ventilation system, and a ventilation system with air supply through louvers are generally known. With reference to FIGS. 1, 2 , 3 and 4 , the following will describe the structure of the smoking room to which each of the systems is applied, and the state of air flow in the room.
  • the air inside the room is mixed with generated smoke, so that a high ventilation flow is required for lowering the concentration of the smoke (particulates).
  • the underfloor ventilation, the displacement ventilation and the ventilation with air supply through louvers in which air supply is effected from the vicinity of the floor surface, make it possible to produce a flow from the vicinity of the floor surface toward the ceiling without mixing the air inside the room with generated smoke, it is expected that the concentration of pollutant is made low in the living space or breathing space (in a height of about 1.1 to 1.6 m).
  • Patent Documents 3 to 5 each suggest a smoking room for which a system of supplying air from a lower region and exhausting the air from an air outlet arranged at an upper region (of its wall surface) is adopted.
  • the techniques disclosed in these documents are systems similar to that for the displacement ventilation. According to each of these documents, an attempt is made for exhausting smoke effectively by setting a table, arranging a shield plate on the ceiling, or arranging a large number of air outlets over ashtrays.
  • An object of the present invention is to provide a smoking room which ensures comfortable smoking for a smoker without limiting the shape of the room inside or the position of any ashtray.
  • a smoking room a temperature and temperature distribution of which are controlled in such a manner that, when a height of the room inside is taken as a horizontal axis and a temperature is taken as a vertical axis, a temperature in the vicinity of a ceiling is higher than a temperature in the vicinity of a floor and temperature distribution has a linear shape or a downward convex shape.
  • a heat generator configured to control the shape of the temperature distribution is set on or near the ceiling.
  • an average temperature difference between the ceiling and a position 50 cm below the ceiling is controlled to 0.5°C or higher by means of the heat generator set on or near the ceiling.
  • the ventilation system may be any one of a displacement ventilation system, a ventilation system with air supply through louvers, and an underfloor ventilation system.
  • the louvers it is preferable that boards of the louvers fitted to the wall surface or the door are oriented downward toward the floor surface viewed from the room inside.
  • air outside the room may be supplied through a duct set inside the room, and the air may be exhausted from the ceiling or from the vicinity of the ceiling.
  • an air inlet of the duct set inside the room is shut with a door when the door is opened, and air is supplied through the door.
  • the ventilation frequency is 5 [times/h] or more and 60 [times/h] or less.
  • the height from the floor to the ceiling inside the room is 2 m or more and 4 m or less.
  • the smoking room according to the present invention uses underfloor ventilation, displacement ventilation, or ventilation with air supply through louvers and supplies air having a lower temperature than room temperature in the living space (breathing space) in such a moderate manner that a flow from the floor surface or a lower region of the wall surface of the room to the room inside is not largely disturbed.
  • the wind speed is set to 0.5 m/s or less.
  • a temperature and temperature distribution in the smoking room of the present invention are controlled in such a manner that, when a height of the room inside is taken as a horizontal axis and a temperature is taken as a vertical axis, temperature distribution has a linear shape or a downward convex shape is to prevent smoke once entrained with a plume and reached the vicinity of the ceiling from diffusing and sedimenting again into the living space (breathing space).
  • the temperature difference in the height direction inside the room is largely varied depending on test conditions.
  • the shape of the temperature distribution inside the smoking room is important.
  • the temperature is made dimensionless and the dimensionless temperature at the ceiling is regarded as 1.0 so as to make the comparison.
  • the shape of any temperature distribution is represented on the basis of dimensionless temperature. Regardless of temperature difference inside the smoking room, if the temperature distribution is in a downward convex shape, the temperature distribution on the basis of dimensionless temperature is also in a downward convex shape.
  • ⁇ n the dimensionless temperature
  • ⁇ m the measured temperature at any position in the height direction
  • ⁇ f the measured temperature in the vicinity of the floor
  • ⁇ c the measured temperature in the vicinity of the ceiling.
  • FIG. 5 shows the relationship between the height of from the floor surface and the dimensionless temperature inside the room.
  • a temperature distribution X forming a curve in a downward convex shape
  • a temperature distribution Y in a liner shape forming a curve in an upward convex shape
  • a temperature distribution Z forming a curve in an upward convex shape
  • the present inventors have made various investigations to remedy the phenomenon. As a result, it is found that, even when the temperature difference itself from the floor to the ceiling is small under the same conditions of air-supply and exhaust, the control of the shape of the temperature distribution into a downward convex shape makes it possible to prevent smoke once reaching the vicinity of the ceiling from diffusing again to the living space and being deposited thereon.
  • the temperature distribution therein is controlled into a downward convex shape as shown in FIG. 5 .
  • a heat generator on or near the ceiling (referred to as a ceiling heat generator hereinafter) as a means for controlling the temperature distribution into a downward convex shape.
  • the smoking room used in the tests has the floor area of 18 m 2 , in which the width is 3 m and the length is 6 m, the ceiling height of 2.7 m, and the interior volume of 48.6 m 3 .
  • FIG. 6 shows positions of an air inlet and air outlets for the smoking room.
  • the door 51 is arranged in a wall surface of the smoking room 50.
  • the air inlet 52 for displacement ventilation (available from Nippon Flakt Co., Ltd., Model: FMH. 062. 400) is arranged at a lower region of the wall surface opposed to the door 51 of the smoking room 50.
  • a number of air outlets 53 are arranged on the ceiling of the smoking room 50. Conditioned air of a temperature of 21°C was supplied from the air inlet 52 for displacement ventilation to the smoking room 50 and the air was exhausted from the air outlets 53 arranged on the ceiling.
  • thermal mannequins imitating human bodies were arranged therein. Assuming that the maximum number of stayers corresponds to one person per 2 m 2 , nine thermal mannequins were arranged. The heat quantity of the thermal mannequins is 100 W per body.
  • FIG. 7 shows the structure of the ceiling heat generator.
  • the heat generator 60 includes a glass bulb 61 having a lower half on which an aluminum heat radiator is provided and an incandescent lamp 62 inserted therein.
  • the heat generator 60 was set in such a manner that the center thereof was positioned 30 cm apart from the ceiling.
  • the power of each of the incandescent lamps 62 is 100 W, and the total power of the nine incandescent lamps 62 is 900 W.
  • the nine heat generators 60 were evenly arranged as viewed from the ceiling of the smoking room 50. By turning these heat generators on and off, the shape of the temperature distribution in the smoking room can be changed.
  • the average number of combusted cigarettes in the smoking room was set to three cigarettes per an hour per m 2 . In the present embodiment, 54 cigarettes were combusted per hour.
  • the method for the combustion was as follows: operations of naturally combusting nine cigarettes at the same time were repeated six times uninterruptedly.
  • the position 70 of the combusted cigarettes was set at the center of the smoking room 50 as viewed from the ceiling.
  • the height of the position 70 of the combusted cigarettes was set to 1.1 m from the floor surface.
  • the arrangement of smokers should be considered in nature. Also in this case, since the present embodiment was designed to evaluate ventilation capability of the smoking room, tests were performed in the state that the position of combusted cigarettes was fixed to the center of the smoking room 50.
  • dust counters 71 were arranged at four points corresponding to middle positions of straight lines linking the center of the smoking room 50 with four corners as viewed from the ceiling.
  • the height at which the dust counters 71 were arranged was set to 1.4 m from the floor surface, regarded as a typical height of the living space (breathing space).
  • Piezobalance dust counters (available from Kanomax Japan, Inc., Model 3511) were used as the dust counters 71 to measure the particulate concentration in real time.
  • the particulate concentrations were continuously measured from a time before particulates were generated to a time when the particulate concentrations each reached zero by ventilation after the six-time combustion operations of the cigarettes finished.
  • the measured values at each of the four positions inside the room were converted to a particulate amount per hour, the measured values at the four points were averaged, and the resultant value was determined as the average particulate amount per hour inside the room.
  • the living space As the particulate concentration in the living space (1.4 m) is lower, the living space is evaluated as a smoking room more comfortable for smokers. Under various test conditions, the smoking rooms were compared for comfort with each other.
  • thermometer arrangement positions were set at four points same as the positions at which the particulate counters 71 were arranges as viewed from the ceiling.
  • the thermometers were arranged at four heights of 0.05 m, 0.14 m, 2.4 m and 2.69 m from the floor surface, respectively. Accordingly, the total number of the temperature measurement points was 16.
  • Type E thermocouples were used as the thermometers, and the type E thermocouples were connected to a mobile temperature recorder (available from Keyence Corporation, NR-1000) to perform measurements. The measured values of the four measurement points at the identical heights were averaged, thereby obtained the temperatures in the height direction inside the room.
  • the ventilation flow was set to 570, 1100 or 2000 [m 3 /h], and the ventilation frequency was set to 11.7, 22.6 or 41.1 [times/h].
  • Measurements were performed under conditions A to C for the mixing ventilation system as standards of ventilation conditions.
  • an air conditioner arranged on the ceiling was operated to mix the air inside the room with smoke and to make the temperature distribution and the particulate concentration inside the room uniform, and then the measurements were performed.
  • Other conditions of the measurements were as described above.
  • FIG. 10 shows the increase-reduction rates of the particulate concentration in the living space (height: 1.4 m) in which the rate under the condition A in Table 1, that is, under the condition that the ventilation frequency was set to 11.7 [times/h] in the mixing ventilation system was regarded as zero.
  • the reason why the particulate concentration is represented by increase-reduction rates is as follows: When the number of combusted cigarettes is varied, the particulate concentration is largely changed. However, in the case of representing each of particulate concentrations by the increase-reduction rate the basis of which is the particulate concentration under a certain condition, the particulate concentrations can be compared with each other even when the number of the combusted cigarettes is varied.
  • the use of the displacement ventilation system makes it possible to make the particulate concentration in the living space lower than the mixing ventilation. This represents that the displacement ventilation system is useful for ventilation of polluted air as described above.
  • G, H and I in FIG. 10 it is found that the use of the displacement ventilation system in the state that the ceiling heat generators are turned on makes it possible to make the particulate concentration even lower for each ventilation frequency.
  • FIG. 11 shows a comparison between D and G in which the ventilation frequency is 11.7 [times/h].
  • FIG. 12 shows a comparison between E and H in which the ventilation frequency is 22.6 [times/h].
  • FIG. 13 shows a comparison between F and I in which the ventilation frequency is 41.1 [times/h].
  • the temperature distribution in order to make the temperature distribution more forcibly into a downward convex shape, it is effective to turn on the ceiling heat generators.
  • the temperature distribution can be made into a more largely downward convex shape than under the condition E.
  • the particulate concentration can be made lower than that under the condition E that the ceiling heat generators are turned off, as shown in FIG. 10 .
  • the particulate concentration can be reduced even under the condition that the ceiling heat generators are turned off. Furthermore, when the ceiling heat generators are turned on, the temperature distribution can be made into a more largely downward convex shape so that the particulate concentration can be made even lower. It is also assumed that, when the ceiling heat generators are turned on to make the temperature distribution forcibly into a downward convex shape, the temperature distribution will be less subjected to the effect of disturbances such as an increase or decrease of smokers or the opening or closing of the door.
  • the smoking room used in the tests has the floor area of 18 m 2 , in which the width is 3 m and the length is 6 m, the ceiling height of 2.7 m, and the interior volume of 48.6 m 3 , as in the first embodiment to which the displacement ventilation system is applied.
  • FIG. 14 shows positions of air inlets and air outlets for the smoking room.
  • the door 51 is arranged in a wall surface of the smoking room 50.
  • Louvers 54 are arranged at a lower region of the wall surface adjacent to the wall surface the smoking room 50 in which the door 51 is arranged, and air is supplied through the louvers 54.
  • the height of the louvers 54 is 0.4 m
  • the total area of the louvers 54 is 2.2 m 2
  • the opening ratio of the louvers 54 is 33%.
  • a number of air outlets 53 are arranged on the ceiling of the smoking room 50.
  • Tests were performed under the same conditions as in the first embodiment about the arrangement positions of the thermal mannequins, the arrangement positions of the ceiling heat generators, the cigarette combustion conditions, the position of the combusted cigarettes, the particulate measurement positions and the temperature measurement positions.
  • FIG. 15 shows the increase-reduction rates of the particulate concentration in the living space (height: 1.4 m) in which the rate under the condition A in Table 2, that is, under the condition that the ventilation frequency was set to 11.7 [times/h] in the mixing ventilation system was regarded as zero.
  • FIG. 16 shows a comparison between J and M in which the ventilation frequency is 11.7 [times/h].
  • FIG. 17 shows a comparison between K and N in which the ventilation frequency is 22.6 [times/h].
  • FIG. 18 shows a comparison between L and O in which the ventilation frequency is 41.1 [times/h].
  • the temperature distribution is in an upward convex shape under the condition J that the ceiling heat generators are turned off, but the temperature distribution is controlled in a downward convex shape under the condition M that the ceiling heat generators are turned on.
  • the particulate concentration in the living space can be made lower under the condition M as compared with the condition J, as shown in FIG. 15 .
  • the temperature distribution is in a downward convex shape even under the condition L that the ceiling heat generators are turned off, and thus, the particulate concentration in the living space can be suppressed to a low value. Additionally, under the condition O that the ceiling heat generators are on, the temperature distribution can be forcibly made in a more largely downward convex shape. As a result, the particulate concentration can be made lower under the condition O as compared with the condition L, although it is slightly, as shown in FIG. 15 .
  • the particulate concentration in the living space can be made lower than in the case of applying the mixing ventilation system thereto by controlling the dimensionless temperature distribution in a downward convex shape, regardless of the ventilation frequency.
  • Tests were performed under the conditions that the temperature distribution was controlled in a downward convex shape and the heat quantity of the ceiling heat generators was varied. Table 3 shows conditions for the tests.
  • FIG. 19 shows test results. FIG. 19 shows a relationship between the temperature difference between the ceiling and the position 50 cm below the ceiling and the particulate concentration in the living space under each ventilation condition. The largeness of the room inside, the cigarette combustion conditions, the measurement conditions, and other test conditions are the same as in the first and second embodiments.
  • the particulate concentration in the living space can be sufficiently reduced under any ventilation conditions. It is found from this fact that in order to reduce the particulate concentration in the living space, it is preferred to control the temperature distribution in a downward convex shape in the height direction by arranging heat generators near the ceiling, and further to ensure the temperature difference of 0.5°C or higher between the ceiling and the position 50 cm below the ceiling.
  • FIG. 20(a) is a view illustrating ventilation with air supply through door louvers 55 in a state that the door 51 is closed.
  • FIG. 20(b) is a view illustrating ventilation in the state that the door 51 is open.
  • the particulate concentration in the living space under the ventilation flow was measured when the door was opened and closed.
  • FIG. 20(c) shows the particulate concentration in the living space under each of the condition 4-1 that the door was closed and the condition 4-2 that the door was opened.
  • the particulate concentration becomes about 0.05 mg/m 3 .
  • the flow velocity of the supplied air is high so that the room inside becomes a mixed state, and thus, the particulate concentration in the living space becomes high.
  • the present inventors have invented a smoking room making it possible to control the shape of the temperature distribution in the height direction to keep the space inside the room good while the boundary flow velocity can be ensured.
  • FIG. 21 shows a perspective view of the smoking room.
  • the sliding door 51 is arranged on a wall surface of the smoking room 50.
  • the indoor duct 56 is arranged at a lower region of the wall surface of the smoking room 50 adjacent to the wall surface on which the door 51 is arranged, and louvers 57 are arranged on the side surface of the indoor duct 56.
  • the air inlet of the indoor duct 56 is arranged near the sliding door 51.
  • the door 51 is opened, the air inlet of the indoor duct 56 is closed, and when the door 51 is closed, the air inlet of the indoor duct 56 is opened.
  • Nine ceiling heat generators 60 are arranged on the ceiling of the smoking room 50. When the ceiling heat generators 60 are turned on, the temperature distribution in the smoking room 50 is controlled in a downward convex shape in the height direction.
  • the air inlet of the indoor duct 56 is closed and air is supplied at a boundary flow velocity of 0.2 m/s or more through the opened door. Further, an exhaust mechanism arranged inside the room is used to exhaust the air through air outlets 53. At this time, the room is ventilated with a class 3 ventilation system.
  • the air inlet of the indoor duct 56 is opened and an air supplying mechanism arranged inside the room is used to supply air outside the smoking room at a boundary flow velocity of 0.2 m/s or more from the louvers 57 through the indoor duct 56 into the smoking room 50. Further, the exhaust mechanism arranged inside the room is used to exhaust the air through the air outlets 53. At this time, the room is ventilated with a class 1 ventilation system. Accordingly, the smoking room shown in FIG. 21 is ventilated with a combination of class 1 ventilation system and class 3 ventilation system.
  • FIG. 22 shows results obtained by measuring the environment inside the smoking room shown in FIG. 21 . Similar to the above-mentioned conditions, the area of the door 51 is 1.53 m 2 , and in the state that the door 51 is opened, the boundary flow velocity is 0.2 m/s, the ventilation flow is 1100 m 3 and the ventilation frequency is 22.6 times/h. Since the door louvers are closed in this case, no air is supplied through the door louvers.
  • the results under conditions 4-1 and 4-2 in FIG. 22 are equivalent to those in FIG. 20(c) . That is, the condition 4-1 is the case where the door is closed and air is supplied through the door louvers, and the condition 4-2 is the case where the door is opened to supply air.
  • the particulate concentration under the condition 4-1 is 0.4 mg/m 3 and, in fact, exceeds the maximum value 0.2 mg/m 3 on the vertical axis in FIG. 22 .
  • the result under condition 4-3 in FIG. 22 shows the case where the door is closed and air is supplied through the indoor duct and the louvers in the smoking room of FIG. 21 .
  • the smoking room in FIG. 21 has a smaller difference in particulate concentration due to opening and closing of the door compared with the smoking room in FIG. 20 .
  • the particulate concentration in the living space is smaller than in the case under condition 4-2 that the door is opened, so that the environment of the living space becomes better.
  • a smoking room can be achieved which has specifications that the particulate concentration in the living space is suppressed to a low value, while the boundary flow velocity is ensured.
  • the shape of the smoking room, the floor area, and the positions of the air inlet and the air outlet in any one of the above-mentioned embodiments are merely examples for implementing the present invention, and they never give any limitation to the present invention.
  • the ceiling heat generators described in any one of the above-mentioned embodiments may be acceptable as long as they make it possible to control the temperature distribution in a downward convex shape, and they never give any limitation to the present invention relating to the heat generating method, the shape of the heat generators, the heat quantity, and the like.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ventilation (AREA)
  • Duct Arrangements (AREA)
EP09734950.0A 2008-04-23 2009-04-22 Rauchzimmer Withdrawn EP2309197A4 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008113049 2008-04-23
PCT/JP2009/058014 WO2009131157A1 (ja) 2008-04-23 2009-04-22 喫煙室

Publications (2)

Publication Number Publication Date
EP2309197A1 true EP2309197A1 (de) 2011-04-13
EP2309197A4 EP2309197A4 (de) 2015-04-01

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Family Applications (1)

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EP09734950.0A Withdrawn EP2309197A4 (de) 2008-04-23 2009-04-22 Rauchzimmer

Country Status (4)

Country Link
EP (1) EP2309197A4 (de)
JP (1) JPWO2009131157A1 (de)
TW (1) TW201013129A (de)
WO (1) WO2009131157A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109899903A (zh) * 2019-01-28 2019-06-18 苏州凸现信息科技有限公司 一种基于服务平台的智能办公防护方法及其系统
CN110848870A (zh) * 2019-11-28 2020-02-28 天津市第五季环境科技有限公司 一种具有新风系统的吸烟室

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Publication number Priority date Publication date Assignee Title
WO2013021466A1 (ja) * 2011-08-09 2013-02-14 日本たばこ産業株式会社 喫煙室の換気方法

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JPH06159780A (ja) * 1992-11-20 1994-06-07 Hitachi Plant Eng & Constr Co Ltd アンダーフロア空調方法
JPH10281533A (ja) * 1997-04-04 1998-10-23 Ohbayashi Corp 床吹出し空調方式における室内温度の予測方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109899903A (zh) * 2019-01-28 2019-06-18 苏州凸现信息科技有限公司 一种基于服务平台的智能办公防护方法及其系统
CN109899903B (zh) * 2019-01-28 2020-09-04 聊城职业技术学院 一种基于服务平台的智能办公防护方法及其系统
CN110848870A (zh) * 2019-11-28 2020-02-28 天津市第五季环境科技有限公司 一种具有新风系统的吸烟室

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JPWO2009131157A1 (ja) 2011-08-18
TW201013129A (en) 2010-04-01
WO2009131157A1 (ja) 2009-10-29
EP2309197A4 (de) 2015-04-01

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