EP1054219A1 - Method for arranging ventilation and a ventilation arrangement - Google Patents

Method for arranging ventilation and a ventilation arrangement Download PDF

Info

Publication number
EP1054219A1
EP1054219A1 EP00660094A EP00660094A EP1054219A1 EP 1054219 A1 EP1054219 A1 EP 1054219A1 EP 00660094 A EP00660094 A EP 00660094A EP 00660094 A EP00660094 A EP 00660094A EP 1054219 A1 EP1054219 A1 EP 1054219A1
Authority
EP
European Patent Office
Prior art keywords
air
stop
exhaust
smokers
exhaust air
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Withdrawn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
EP00660094A
Other languages
German (de)
English (en)
French (fr)
Inventor
Seppo Vartiainen
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.)
Jeven Oy
Original Assignee
Jeven Oy
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 Jeven Oy filed Critical Jeven Oy
Publication of EP1054219A1 publication Critical patent/EP1054219A1/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F9/00—Use of air currents for screening, e.g. air curtains
    • 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
    • F24F11/00—Control or safety arrangements
    • F24F11/0001—Control or safety arrangements for ventilation
    • F24F2011/0002—Control or safety arrangements for ventilation for admittance of outside air
    • F24F2011/0004—Control or safety arrangements for ventilation for admittance of outside air to create overpressure in a room

Definitions

  • the invention relates to a method according to claim 1 for arranging ventilation in room facilities, particularly in restaurant facilities.
  • the invention also relates to a method according to the preamble of claim 13 for arranging ventilation in room facilities, particularly in restaurant facilities.
  • the invention relates to an ventilation arrangement for room facilities, particularly restaurant facilities, according to the preamble of claim 16.
  • the invention relates to an ventilation arrangement for room facilities, particularly restaurant facilities, according to the preamble of claim 27.
  • Cigarette smoke usually floats to the work station and disturbs particularly those employees who do not smoke. There has not been suggested any straightforward method for solving this problem. In general, the discussion of the whole issue has only just started.
  • the object of the invention is to eliminate the drawbacks connected to the ventilation method described above.
  • Another object of the invention is to realize a novel method, advantageously two novel methods, for arranging ventilation in room facilities, particularly in restaurant facilities.
  • the ventilation arrangement according to the invention for room facilities, particularly restaurant facilities, is characterized by what is set forth in the appended claim 16.
  • a downwardly directed air flow stop advantageously a wall, and the air exhaust from the room facilities is arranged to take place at least partly in the vicinity of said stop.
  • the ventilation arrangement provided for room facilities particularly restaurant facilities, said facilities being divided into areas designated for smokers and non-smokers, includes a downwardly directed air flow stop, advantageously a wall, which is arranged at the border of said areas, in the ceiling structures, and the air exhaust from the room facilities is arranged to take place by air exhaust means at least partly in the vicinity of said stop.
  • the basic principle of the invention is that at the border of said areas, there is provided an air flow stop, and that air exhaust is arranged to take place in connection with said stop. Warm air rises up and tends to move, in the vicinity of the ceiling structures, in parallel with said structures, and to mix. Now the flow stop restricts the passage of air between the separate areas, and particularly the floating of the cigarette smoke containing air from the smokers' area to the non-smokers' area. Air exhaust takes place at the air flow stop or in the immediate vicinity thereof.
  • the above described basic principle of the invention is likewise applied in the second method for arranging ventilation in room facilities, particularly restaurant facilities.
  • an air flow stop by means of said stop, a work station is surrounded in the ceiling structures, and incoming air is brought at the same low speed from upwards to the work station.
  • Air exhaust is arranged outside the work station.
  • Another advantage of the invention is that in areas designated for smokers, there can be arranged work stations where the quantities of cigarette smoke and other corresponding harmful particles remain below the set target level.
  • a bar in a restaurant can be divided, by conforming to the counter, into a smoking area and a non-smoking area designated for the employees.
  • Respectively, for example gambling tables can be arranged to be separate smoke-free work stations even in the smokers' area.
  • a room space 1 is divided into areas 2; 2a, 2b; 3, so that the first area 2; 2a, 2b is an area reserved for smokers, i.e. smoking area, and the second area 3 is an area reserved for non-smokers, i.e. a smokeless area.
  • the serving personnel and the customers can move relatively freely both in the smoking area and in the smokeless area.
  • ventilation is arranged in a room space 1, so that at the border 4; 4a, 4b, 4c of the areas 2; 2a, 2b; 3 designated for smokers and non-smokers, in the ceiling structures 5, there is arranged a downwardly directed and longitudinally uniform air flow stop 6, advantageously a wall that passes through the whole room space, from wall to wall. Further, according to the invention, in connection with said stop 6 or in the immediate vicinity thereof, there is arranged air exhaust from the room space 1.
  • the purpose of the stop 6 is to restrict and prevent the warm, polluted air rising up from the smokers' side 2; 2a, 2b from flowing to the smokeless area 3 in the vicinity of the ceiling structures 5.
  • the passage of essentially horizontal air currents in the vicinity of the ceiling 5 is strongly restricted.
  • Air exhaust from the room facilities is arranged to take place at lest partly by means of air exhaust means provided in connection with the stop 6.
  • the ceiling structures in a room space 1, particularly in a restaurant space include a lowered ceiling 5a. Between the ceiling proper and the lowered ceiling, there are placed, among others, ventilation ducts, lamps and electric wires.
  • the stop 6 is as a downwardly directed wall or the like that is suspended from the lowered ceiling 5a.
  • the lowered ceiling 5a is also considered as at least a relatively air-tight structure.
  • the height h of the stop 6, measured in the downwardly direction from the ceiling structure 5, is arranged to be essentially longer than the room height.
  • the room height is of the order 250 - 270 cm.
  • the height h of the stop 6 is advantageously within the range 15-70 cm.
  • the stop 6 is installed in the ceiling structure 5 so that the protruding end 7c of said stop 6, with respect to the ceiling structure 5, does not extend so far down that it should disturb people moving in the restaurant space 1 or the like.
  • the stop is generally not extended lower than to a distance of 200 cm from the floor level.
  • the sides 7a, 7b of the stop 6 are vertical, but they can also be inclined or oblique with respect to the level of the ceiling, such as the lowered ceiling 5a.
  • the stop 6 can be realized of several different materials, for instance of transparent acrylic plate, wood, metal, cloth etc.
  • the stop 6 there is provided a number of exhaust air apertures 8. Said exhaust air apertures are arranged essentially in the longitudinal direction of the stop 6, i.e. in parallel to the ceiling, such as a lowered ceiling 5a, and advantageously along the whole length of the stop 6.
  • the exhaust air apertures 8 are connected, with a suitable exhaust air duct 9 to the exhaust air apparatus 10.
  • the stop 6 as such can be for example hollow, in which case the interior space thereof constitutes part of the exhaust air duct.
  • the exhaust air apertures 8, the exhaust air duct or ducts 9 and the exhaust air apparatus 10 together form at least part of the ventilation means for the room space 1. Through the exhaust air apertures 8, at least part of the exhaust air is first conducted to the exhaust air duct 9 and further, via the exhaust air apparatus 10 proper, out of the room space 1.
  • the exhaust air apertures 8 can be arranged in the stop 6 in various different ways, as is illustrated in figures 2A, 2B, 2C, 3A, 3B and 3C.
  • the exhaust air apertures 8, 8a, 8b are most advantageously arranged in the protruding end 7c of the stop 6; 6a, 6b, as is illustrated in figures 2A, 2B and 2C. In that case both sides 7a, 7b of the stop 6; 6a, 6b are unbroken.
  • the sides 7a, 7b of the stop 6; 6a, 6b direct the air flow that hits the ceiling, such as the lowered ceiling 5a, in parallel direction with respect to said ceiling, downwardly towards the protruding end 7c positioned in the longitudinal direction of the stop 6; 6a, 6b, so that air is exhausted via the exhaust air apertures 8; 8a, 8b and discharged from the room space 1.
  • the exhaust air apertures 8; 8c, 8d are arranged at least on one side 7; 7a of the stop 6; 6c, 6d, said side being advantageously directed towards the area 2; 2a reserved for smokers, as is illustrated in figures 3A, 3B and 3C.
  • the exhaust air apertures 8; 8c, 8d can be arranged on both sides 7; 7a, 7b of the stop 6; 6c, 6d, but exhaust air apertures on the side of the area reserved for non-smokers 3 (not illustrated) are not necessary. Naturally they can help in boosting the ventilation in the smokeless area 3. However, the essential point in this case is that especially in the smoking area 2; 2a, 2b, ventilation is carried out effectively in the vicinity of the stop 6; 6c, 6d.
  • the exhaust air apertures 8 are provided in connection with the stop 6.
  • a number of exhaust air apertures 8; 8e (and 8f) are arranged in the immediate vicinity of the stop 6; 6e (cf. the dotted line in figure 1).
  • the exhaust air apertures 8; 8e (and 8f) are provided adjacent to the stop 6; 6e, in the ceiling structure 5 and particularly in an exhaust air duct 9; 9b (and 9c) arranged therein.
  • the exhaust air duct 9; 9b (and 9c), and at the same time the exhaust air apertures 8; 8e (and 8f) are essentially installed in the longitudinal direction of the stop, either in the immediate vicinity of the junction between the stop 6; 6c and the ceiling, or for example at a distance of 10 - 15 cm therefrom.
  • the maximum distance of the exhaust air duct 9; 9b, 9c, including the exhaust air apertures 8; 8c, 8d, from the stop is for example 50 cm.
  • the exhaust air duct 9; 9b with exhaust air apertures 8; 8c is advantageously provided only on one side of the border 4; 4a, and advantageously in the smoking area 2, 2a. However, it can also be arranged in the smokeless area 3, in the immediate vicinity of the stop 6; 6e, as is illustrated by dotted lines in fig 4. Also in this case the exhaust air apertures 8; 8c, 8d are connected, via the exhaust air duct 9; 9b, 9c, to the exhaust air apparatus 10; 10a proper, whereby at least part of the exhaust air is discharged from the room space 1.
  • the exhaust air apertures 8 are separate apertures spaced apart, as is illustrated in figures 2B and 3B.
  • the exhaust air apertures 8; 8b, 8d are arranged as an elongate, uniform air exhaust slot, as is illustrated in figures 2C and 3C.
  • the input of fresh incoming air is preferably arranged in one or several smokeless areas 3; 3a.
  • the feeding of incoming air is realized by means of an air input device 11, which is preferably fitted in the ceiling structures 5 of the smokeless area 3.
  • the feeding of the incoming air is arranged to take place at a low flow speed, advantageously within the range 0.1 - 0.2 m/s.
  • the air input device is a low-speed air input device.
  • the advantage of said device is that the air mixing ratio is low, i.e. the tiny air jets entering the room space do not carry along a lot of surrounding air.
  • the feeding of incoming air is advantageously arranged to take place from the top to the room space 1.
  • the incoming air can also be fed on the floor level, for instance beside one or several walls, or in the middle section 1 of the room space, for example by means of air input devices installed in connection with pillars arranged therein, said devices likewise being advantageously low-speed air input devices.
  • the air input devices are particularly located in the smokeless area 3.
  • the air exhaust from the room space is arranged to take place at least through the exhaust air apertures 8; 8a, 8b, 8c, 8d of the stop 6; 6a, 6b, 6c, 6d.
  • air exhaust from a room space 1 particularly a restaurant space
  • the air exhaust from the room space is arranged to take place expressly from the smoking area 2; 2a, in addition to the exhaust air arrangement provided in connection with said stop 6.
  • the placing of the exhaust air apparatus 10; 10b in the ceiling structures is most advantageous, because now the warm and smoke-polluted air rising upwardly is efficiently exhausted from the room space 1 and discharged therefrom.
  • a room space particularly in a restaurant space, there are often arranged separate service stations 12; 12a, 12b, such as a bar counter 12a for serving drinks and a gambling table 12b, such as a card table, figure 1.
  • service stations 12; 12a, 12b are located in the smoking area 2; 2a, or they are at least partly or completely surrounded by the smoking area 2; 2b.
  • the problem with said work stations is how to ensure the intake of fresh air for the employees, and to protect them from cigarette smoke.
  • said problem related to the work station is solved so that in each work station 12; 12a, 12b, figures 5 and 6, that is particularly located in the area reserved for smokers 2; 2a, 2b or in the immediate vicinity thereof, there is arranged the feeding of incoming air, which is realized at a low flow speed, preferably within the range 0.1 - 0,2 m/s, by means of a suitable air input device 13; 13a, 13b; that the feeding of incoming air is directed from top, i.e.
  • the air input device 13; 13a, 13b is installed in connection with the ceiling structure 5; and that the feeding of incoming air is arranged to take place within that area 15; 15a, 15b where people are working; and that the air input area 15; 15a, 15b thus defined is outlined by means of an air flow stop 16 arranged around said area and directed downwardly from the ceiling structures 5, said stop being advantageously a wall.
  • the temperature of the incoming air is kept close to the room temperature, preferably so that the temperature difference does not surpass 5° C.
  • FIG. 1 Ventilation arrangements according to the above described method are illustrated in figures 1, 5, 6 and 7.
  • a low-speed air input device 13; 13a, 13b is fitted in the ceiling structures of a work station 12; 12a, 12b.
  • Figure 5 illustrates the ventilation arrangement of a restaurant or a similar bar counter work station
  • figure 6 illustrates the ventilation arrangement in a work station of for example a gambling table or a disc jockey.
  • a downwardly directed air flow stop 16; 16a, 16b advantageously a wall.
  • said air flow stop 16 can constitute part of the wall proper 23 or the like of said room space, as is illustrated in figure 5.
  • the air flow stop 16; 16a, 16b there is defined the air input area 15; 15a, 15b.
  • the surface area of the air input area 15; 15a, 15b defined by the air flow stop 16; 16a, 16b is essentially equal to the employee's working space, i.e. the area where the employee mainly serves his customers.
  • the area 15; 15a, 15b defined by the air flow stop 16; 16a, 16b is for example half of the space where the employee moves, advantageously about 70 - 80%, even as much as 100%.
  • the surface area of the air input device 13; 13a, 13b itself, particularly the surface area of the feeding part fitted in the ceiling structure 5, is generally clearly smaller than the area outlined by the air flow stop 16.
  • the surface area of the air input device 13; 13a, 13b is for example 30 - 60% of the area outlined by the air flow stop, but in some embodiments it can be even 100% thereof.
  • the height h1, h2 of the air flow stop 16; 16a, 16b when seen downwardly from the ceiling is at least 150 mm and at most of the order 300-400 mm. However, in some cases part of the air flow stop 16 constitutes part of the wall 23 proper of the room, in which case it extends from top to bottom.
  • the air flow stop 16; 16a, 16b encompasses the air input device 13; 13a, 13b, and consequently there is created a clear incoming air area, where the input velocities are low, i.e. of the order 0.1 - 0.2 m/s. This prevents the mixing of impure air in the air of the work station, i.e. the floating of smoky air from the smoking area 2; 2a, 2b to the work station 12; 12a, 12b.
  • the air flow stop 16; 16a is made for example of transparent acrylic plate, wood, metal, cloth etc.
  • one or several air input devices 13; 13a covers, when seen from the top, for instance 50% of the free working space of the employees working in the bar inside the counter 17.
  • the air flow in the work station 12; 12a, 12b takes place out of the work station in the direction of the arrows D, E, as is illustrated in figures 5 and 6.
  • the smoke from the cigarettes of people smoking at the counter 17 or at the gambling table 19 does not float into the work station, but it is exhausted by an exhaust air device, out of the room space 1 for example by means of air exhaust means provided in connection with a stop 6; 6a, 6b arranged in the border area 4; 4a, 4b of areas designated for smokers and non-smokers, as is illustrated above.
  • the air flow stop 16; 16a, 16b can also be realized as an air flow stop 6 that is applied in the border area 4; 4a, 4b between the smoking area 2; 2a, 2b and the smokeless area 3, and in connection with which the air exhaust from the room space is at least partly arranged.
  • the stops 6; 6a, 6b, 6c, 6d, 6e illustrated in figures 2A, 2B, 2C; 3A, 3B, 3C and 4 can as such be provided around the air input device 13; 13a, 13b in order to outline the air input area 15; 15a, 15b.
  • the stop 16; 16a can be replaced by the stop 6; 6a, 6b in the work station 12; 12a in figure 5, in which case also the ventilation in the border areas of the work station is improved and the ventilation system is simplified.
  • the ventilation arrangement provided in a work station includes two temperature sensors 20, 21 which are connected to an incoming air regulating unit 22, and this is further connected to an input air device 14, through which incoming air is brought to the air input device 13; 13a, 13b of the work station 12; 12a, 12b.
  • the first temperature sensor 21 is installed in the work station, advantageously near the ceiling structures 5 of the work station, in order to measure the temperature T 1 of the work station, and respectively another temperature sensor 21 in the smoking area 2; 2a, advantageously near the ceiling structures 5, in order to measure the room temperature T 2 .
  • the temperatures T 1 , T 2 obtained from the temperature sensors 20, 21 are observed, and the required heating/cooling instructions of the incoming air are given, from the regulating unit 22 to the input air device 14 in order to feed input air with a suitable temperature from the air input device 13; 13a, 13b to the work station 12; 12a, 12b.
  • the temperature T 1 of the input air to bed fed in the work station, and the room temperature T 2 are attempted to be kept roughly the same, however so that the temperature difference T 2 - T 1 does not surpass 5° C.
  • the air flow D, E from the work station 12; 12a, 12b can efficiently be kept directed outwardly towards the smoking area 2; 2a, 2b, so that neither in said air flow nor between the work station 12; 12a, 12b and the smoking area 2; 2a, 2b, there is created a temperature difference that should mix said air flows and possibly make the smoky air float into the work station.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ventilation (AREA)
EP00660094A 1999-05-21 2000-05-19 Method for arranging ventilation and a ventilation arrangement Withdrawn EP1054219A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI991157 1999-05-21
FI991157A FI112533B (sv) 1999-05-21 1999-05-21 Förfarande för anordnande av ventilation och ventilationsarrangemang

Publications (1)

Publication Number Publication Date
EP1054219A1 true EP1054219A1 (en) 2000-11-22

Family

ID=8554705

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00660094A Withdrawn EP1054219A1 (en) 1999-05-21 2000-05-19 Method for arranging ventilation and a ventilation arrangement

Country Status (3)

Country Link
EP (1) EP1054219A1 (sv)
FI (1) FI112533B (sv)
NO (1) NO20002573L (sv)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021228416A1 (de) * 2020-05-15 2021-11-18 Georg Silvano VERFAHREN ZUR VORBEREITUNG VON DEKONTAMINATIONSMAßNAHMEN, VERFAHREN ZUR DURCHFÜHRUNG VON DEKONTAMINATIONSMAßNAHMEN UND VERFAHREN ZUR ÜBERWACHUNG VON DEKONTAMINATIONSMAßNAHMEN
WO2021229074A3 (de) * 2020-05-15 2022-01-27 Dechert Michael Dieter Vorrichtung und verfahren zur durchführung von dekontaminationsmassnahmen, verfahren zur vorbereitung von dekontaminationsmassnahmen und verfahren zur überwachung von dekontaminationsmassnahmen

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2180054A (en) * 1985-09-05 1987-03-18 John Walter Holway Air curtains for cleaning polluted air
JPS62182541A (ja) * 1986-02-04 1987-08-10 Shimizu Constr Co Ltd クリ−ンル−ム
EP0362958A1 (en) * 1988-10-04 1990-04-11 F.H. Biddle B.V. Air curtain device
JPH10286420A (ja) * 1997-04-15 1998-10-27 Matsushita Seiko Co Ltd 空気清浄システム

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2180054A (en) * 1985-09-05 1987-03-18 John Walter Holway Air curtains for cleaning polluted air
JPS62182541A (ja) * 1986-02-04 1987-08-10 Shimizu Constr Co Ltd クリ−ンル−ム
EP0362958A1 (en) * 1988-10-04 1990-04-11 F.H. Biddle B.V. Air curtain device
JPH10286420A (ja) * 1997-04-15 1998-10-27 Matsushita Seiko Co Ltd 空気清浄システム

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 012, no. 027 (M - 662) 27 January 1988 (1988-01-27) *
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 01 29 January 1999 (1999-01-29) *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021228416A1 (de) * 2020-05-15 2021-11-18 Georg Silvano VERFAHREN ZUR VORBEREITUNG VON DEKONTAMINATIONSMAßNAHMEN, VERFAHREN ZUR DURCHFÜHRUNG VON DEKONTAMINATIONSMAßNAHMEN UND VERFAHREN ZUR ÜBERWACHUNG VON DEKONTAMINATIONSMAßNAHMEN
WO2021228410A1 (de) * 2020-05-15 2021-11-18 Georg Silvano VERFAHREN ZUR VORBEREITUNG VON DEKONTAMINATIONSMAßNAHMEN, VERFAHREN ZUR DURCHFÜHRUNG VON DEKONTAMINATIONSMAßNAHMEN UND VERFAHREN ZUR ÜBERWACHUNG VON DEKONTAMINATIONSMAßNAHMEN
WO2021229074A3 (de) * 2020-05-15 2022-01-27 Dechert Michael Dieter Vorrichtung und verfahren zur durchführung von dekontaminationsmassnahmen, verfahren zur vorbereitung von dekontaminationsmassnahmen und verfahren zur überwachung von dekontaminationsmassnahmen

Also Published As

Publication number Publication date
FI991157A (sv) 2000-11-22
FI991157A0 (sv) 1999-05-21
NO20002573L (no) 2000-11-22
FI112533B (sv) 2003-12-15
NO20002573D0 (no) 2000-05-19

Similar Documents

Publication Publication Date Title
US5441279A (en) Smokeless casino gaming table
CA1168121A (en) Countertop range with proximity ventilation and electronic air cleaner
US5213059A (en) Air conditioning unit for experimental animals
US4608835A (en) Cabinet for cooling goods, etc.
US5220910A (en) Device and method for ventilation
EP1054219A1 (en) Method for arranging ventilation and a ventilation arrangement
JPH01168316A (ja) 空気清浄装置
FI106149B (sv) Förfarande och anordning för tillförsel av luft till ett ventilerat rum
US5775987A (en) Smoke removing device and method
EP0511736A2 (en) Air ventilation system
JPH10118327A (ja) 遊技機のエア−カ−テン装置
GB2180054A (en) Air curtains for cleaning polluted air
AU714592B2 (en) Air treatment
JPH0921553A (ja) エアーカーテン付き喫煙清浄装置
JPH09308755A (ja) 遊技場における空調システム
US5738118A (en) Apparatus for collecting cigarette smoke, ash and cigarette ends
EP1161897B1 (en) Restaurant service counter and a method for using same
KR102546580B1 (ko) 양압을 이용한 공기 정화 및 온도 조절 기능을 갖는 버스 승강장
JPS59108543A (ja) 解剖台
JPH10205841A (ja) 公共用喫煙所
JP3028400B2 (ja) パチンコ台の排煙装置
FI118189B (sv) Förfarande för att anordna luftväxling i en arbetspunkt och luftväxlingsarrangemang i en arbetspunkt
Jr Improving indoor air quality by increased ventilation effectiveness
Teeters et al. Smoke gets in your eyes—: Examining air quality in casino-hotels
JPH10281509A (ja) 空気清浄機

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT DE DK FI GB SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20010515

AKX Designation fees paid

Free format text: AT DE DK FI GB SE

17Q First examination report despatched

Effective date: 20040614

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20041228