EP0667495B1 - Laborbe- und -entlüftungsanlage - Google Patents
Laborbe- und -entlüftungsanlage Download PDFInfo
- Publication number
- EP0667495B1 EP0667495B1 EP94120969A EP94120969A EP0667495B1 EP 0667495 B1 EP0667495 B1 EP 0667495B1 EP 94120969 A EP94120969 A EP 94120969A EP 94120969 A EP94120969 A EP 94120969A EP 0667495 B1 EP0667495 B1 EP 0667495B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- air
- exhaust
- room
- laboratory
- consumers
- 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.)
- Expired - Lifetime
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
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/02—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using chambers or hoods covering the area
- B08B15/023—Fume cabinets or cupboards, e.g. for laboratories
-
- 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
Definitions
- the invention relates to a laboratory ventilation system for a laboratory that has multiple air consumers including at least one deduction after which Generic term of patent claim 1.
- FIG. 2 of the accompanying drawing is a conventional laboratory ventilation system shown, which with an exhaust air line 31 for Aspirating ventilated cabinets 32, an exhaust air duct 33 for Extracting fume cupboards 34 and an exhaust air duct 35 for others Suction is provided.
- the supply air is via a supply air duct 36 supplied from adjacent rooms and there is room air 37 pushed because there is always a negative pressure in the laboratory must rule.
- Laboratory ventilation systems are therefore three different exhaust air lines 31, 33, 35 and a supply air duct 36 in the room.
- the object underlying the invention is therefore in it, a laboratory ventilation system to create that simply built is and in which the exhaust air and supply air lines in a central Exhaust and supply air systems are integrated.
- Training should include investment needs, space requirements and operating costs be reduced.
- Fig. 1 In the laboratory ventilation system shown in Fig. 1 are all exhaust air extraction points on a common exhaust system connected.
- the suction points that work all the time such as the cupboards 1 for storing chemicals or the base cabinets, medicine cabinets, drying cabinets and the like have mechanically fixed air volume flow controllers or flaps 2, which regulates firmly are. These are facilities that help a spring construction, the volume flow regardless of the form keep constant.
- the deductions 3 as larger consumers are with a control system 5, 6 equipped that built into the fume cupboards, and is also formed in the following manner. On every trigger a motion detector is provided so that the sliding window the trigger automatically goes down and one for it Operation provides the necessary minimum volume flow, if nobody works on the trigger for a certain period of time.
- All controllers 6 use a data line 7 volume flows currently used, i.e. the actual exhaust air values a central ventilation controller namely a room controller 8. All values of, for example, are still on the room controller 8 on the flaps 2 of the cabinets 1 set constantly Volume flows.
- the room controller 8 forms from the adjacent ones Values a manipulated variable, which via a data line 9 as a control signal is due to the building management system, a flap 17 in Supply air line 16 is controlled so that the laboratory space in the supply air-exhaust air balance is held.
- the room controller 8 can the flap 17th also operate directly.
- the room is operated at a constant negative pressure, so that a volume flow 18 from the adjacent rooms into the laboratory flows.
- room suction 20 of the ceiling or floor suction 21 are provided and connected, then these are regulated via fixed volume flow controllers 19 and 22, which are lockable and from the sliding window regulator 6 Deductions are controlled. Also the settings of these consumers are at room controller 8.
- the laboratory ventilation system shown in Fig. 1 works in the following way:
- the data lying on the room controller 8 via the data line 7 via the fixed or variable at consumers 1, 3 regulated exhaust air volumes are converted into a corresponding manipulated variable converted to adjust the flap 17 of the supply air line 16, such that for a corresponding to the required amounts of exhaust air Air supply is ensured.
- a user wants to work on trigger 3, then he can raise the trigger's sliding window which means that the controller 6 of the fume cupboard starts up the volume flow of the fume cupboard and thereby enables safe work on the fume cupboard.
- the corresponding one Data for the changed exhaust air volumes are available on Room controller 8.
- the sliding window closes automatically. After closing the Sliding window regulates the controller 6 via the control flap 5 Volume flow back down to the minimum.
- the air values of all fixed values are thus on the room controller 8 Aspirations as well as via bus or analog lines from all controllers the currently used volume flows, i.e. the Actual values of the exhaust air quantities.
- the controller 8 adds these values and sends a corresponding bus or analog signal to the room building control center further. This regulates the supply air line 16 in such a way that via the flap 17, the room supply air of the required amount of exhaust air is adjusted. There remains a small amount of residual air 18, which is drawn in through corridor doors to create a negative pressure maintain in the laboratory.
- the room controller 8 can, if no building management system is provided, which is the case, for example, when none Laboratory air conditioning takes place via analog output signals Actuate flap 17 directly.
- the laboratory is equipped with air conditioning then there are different ones in the room of the laboratory Temperature and air quality sensors for air conditioning technology. It can happen that when using many devices in the Laboratory the amount of exhaust air especially when closed Sliding window of the deductions 3 is no longer sufficient to ensure a safe To ensure cooling.
- the air conditioner detects that the extracted and the supplied air quantities too small are, it can the room controller 8 a higher via a line 10 Specify the setpoint.
- the room controller 8 can then in turn the subordinate controllers, for example controller 6 of the Deduction 3, so that the air volume flows also closed sliding window can be increased, so that more fresh air is also supplied to the room. It is also possible, to open the sliding window accordingly, so that the Controller 6 automatically increases the exhaust air volume.
- One for the air conditioner own room exhaust air with own room exhaust air controller and A separate room air damper is therefore unnecessary, since these functions by the regulators integrated in the fume cupboards can.
- the signal transmission between the room controller 8 and the connected units can be used with analog signals up to 10 V or 4 to 20 mA signals.
- a bus technology for example a two-wire or Three-wire bus technology. Reduced to this case the number of interfaces is considerable and is guaranteed that the building management system at any time from the room controller 8 via the Operating states can be informed.
- the laboratory ventilation system described above has the advantage a simple ventilation system, with all measuring and control elements are basically integrated into the laboratory equipment. These include all deductions, all other suction systems, all ventilated cupboards as well as the necessary ceiling and Floor air outlets. These components are required on site only a predetermined minimum pressure and regulate their air volume flows automatically after fluctuations. The furniture manufacturer therefore only needs a single connection point for the total indoor air per line.
- the training is such that in vertical Shafts the exhaust pipes run through the building, whereby the central fans sit in the roof or in the basement.
- These can be prefabricated in the factory, delivered to consumers attached and connected to the on-site through line. Also on the supply air side can be done in the same way be moved. Another part of the room is also running vertical supply line through the room. This too Supply lines can be connected to prefabricated supply air systems become. It is only necessary to put a flap between the supply lines and the room line, which controls the volume flow.
- supply air can instead of supply air ducts also brick walls or lightweight concrete walls serve as supply air lines.
- the 50% peak load that is obtained relates all of the building management systems, which can be reduced by 50%. Can in a laboratory a peak load can be driven for a short time.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ventilation (AREA)
- Greenhouses (AREA)
Description
Claims (7)
- Laborbe- und entlüftungsanlage für einen Laborraum, der mehrere Luftverbraucher (1,3) einschließlich wenigstens eines Abzugs mit Schiebefenster aufweist, die mit einem einzigen gemeinsamen Abluftkanal (12) verbunden sind, mit einem Raumregler (8) an dem die Istwerte der Abluftmengen der Luftverbraucher liegen und der daraus eine Stellgröße zum Steuern der Zuluftregeleinrichtungen (17) des Zuluftstranges (16) bildet, dadurch gekennzeichnet, daß alle Luftverbraucher konstruktiv so ausgebildet sind, daß sie den gleichen maximalen Druckverlust von 150 Pa nicht überschreiten, alle Luftverbraucher eine Abluftnegeleinrichtung (2,6) aufweisen und der wenigstens eine Abzug so ausgebildet ist, daß er automatisch das Schiebefenster schließt und dadurch in einen Betriebszustand mit niedrigster Abluftmenge gefahren wird, wenn niemand vor dem Abzug arbeitet.
- Laborbe- und entlüftungsanlage nach Anspruch 1, dadurch gekennzeichnet, daß der Zuluftstrang (16) und der Abluftkanal (12) auf maximal 50% der Spitzenab- und Zuluftmenge dimensioniert sind.
- Laborbe- und entlüftungsanlage nach Anspruch 1, dadurch gekennzeichnet, daß am Raumregler (8) zusätzlich der Wert einer vorgeschriebenen Mindestabluftmenge liegt und der Raumregler (8) die Zuluftregeleinrichtungen (17) so steuert, daß die vorgeschriebene Mindestabluftmenge unabhängig von den benötigten Abluftmengen der Luftverbraucher (1, 3) immer sichergestellt ist.
- Laborbe- und entlüftungsanlage nach Anspruch 1, 2 oder 3 für einen Laborraum, der mit einer Klimaanlage versehen ist, dadurch gekennzeichnet, daß auch der Wert des Luftbedarfes der Klimaanlage am Raumregler (8) liegt und der Raumregler (8) dann, wenn die sich aus den Abluftmengen der Luftverbraucher (1, 3) ergebende Stellgröße für die Zuluftregeleinrichtungen (17) unter einem Wert liegt, der den Luftbedarf der Klimaanlage sicherstellt, die Zuluftregeleinrichtungen (17) vorrangig nach Maßgabe des Luftbedarfes der Klimaanlage gesteuert werden.
- Laborbe- und entlüftungsanlage nach Anspruch 3, dadurch gekennzeichnet, daß dann, wenn eine Zuluftmenge benötigt wird, die über dem Wert liegt, der sich auf Grund der Stellgröße des Raumreglers (8) aus den Abluftmengen der Luftverbraucher (1, 3) ergibt, das Schiebefenster des Abzuges (3) geöffnet wird, so daß dementsprechend die Abluftmenge zunimmt, deren Istwert am Raumregler (8) liegt.
- Laborbe- und entlüftungsanlage nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Stellgröße für die Zuluftregeleinrichtungen (17) vom Raumregler (8) an einem Gebäudeleitsystem liegt, das seinerseits die Zuluftregeleinrichtungen (17) steuert.
- Laborbe- und entlüftungsanlage nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß alle Meß- und Regeleinrichtungen in die Laborraumeinrichtung integriert sind.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4402541 | 1994-01-28 | ||
DE4402541A DE4402541A1 (de) | 1994-01-28 | 1994-01-28 | Laborbe- und -entlüftungsanlage |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0667495A1 EP0667495A1 (de) | 1995-08-16 |
EP0667495B1 true EP0667495B1 (de) | 2000-06-28 |
Family
ID=6508906
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94120969A Expired - Lifetime EP0667495B1 (de) | 1994-01-28 | 1994-12-30 | Laborbe- und -entlüftungsanlage |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0667495B1 (de) |
AT (1) | ATE194220T1 (de) |
DE (2) | DE4402541A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105115095A (zh) * | 2015-08-24 | 2015-12-02 | 兰州大学 | 一种用于实验室的通风控制*** |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4402541A1 (de) | 1994-01-28 | 1995-08-03 | Waldner Laboreinrichtungen | Laborbe- und -entlüftungsanlage |
DE19807889C1 (de) * | 1998-02-25 | 1999-09-09 | Kummer | Verfahren und Einrichtung zur Regelung eines Abluftstromes |
CA3089348C (en) | 2008-01-18 | 2022-10-25 | Strobic Air Corporation | Control system for exhaust gas fan system |
DE102011055113B4 (de) * | 2011-11-07 | 2014-06-18 | Esta Apparatebau Gmbh & Co. Kg | Energiesparende Volumenstromregelungsvorrichtung für ein Entstaubungssystem zur Absaugung eines Arbeitsbereichs |
DE102015201026B3 (de) * | 2015-01-22 | 2016-06-16 | Konrad Kreuzer | Abzugsvorrichtung mit geregelter Absaugeinrichtung |
CN110508588A (zh) * | 2019-08-31 | 2019-11-29 | 贵州大学 | 一种化学教学实验室用抽风排气装置 |
DE102020129412A1 (de) | 2020-11-09 | 2022-05-12 | Lab-Concept GmbH | Abzugsvorrichtung mit Volumenstromregelung |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4774878A (en) * | 1986-11-12 | 1988-10-04 | Tri City Laboratory Specialists, Inc. | Trimodal piston driven sash operator |
US5240455A (en) * | 1991-08-23 | 1993-08-31 | Phoenix Controls Corporation | Method and apparatus for controlling a fume hood |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1208863B (de) * | 1959-04-13 | 1966-01-13 | Svenska Flaektfabriken Ab | Verfahren und Vorrichtung zum Be- und Entlueften von Abzuegen fuer Laboratorien u. dgl. |
DE3126597C2 (de) * | 1981-07-06 | 1985-12-05 | A.C. Plastic Industries Ltd., Croydon | Gasabzugeinrichtung für mehrere Gasabzug-Schränke |
US5115728A (en) * | 1990-09-28 | 1992-05-26 | Landis & Gyr Powers, Inc. | System for controlling the differential pressure of a room having laboratory fume hoods |
DK166229C (da) * | 1990-11-02 | 1993-08-16 | Netavent As | Ventilationssystem |
US5205783A (en) | 1991-08-22 | 1993-04-27 | Accu*Aire Systems, Inc. | Air flow control equipment in chemical laboratory buildings |
DE4402541A1 (de) | 1994-01-28 | 1995-08-03 | Waldner Laboreinrichtungen | Laborbe- und -entlüftungsanlage |
-
1994
- 1994-01-28 DE DE4402541A patent/DE4402541A1/de not_active Ceased
- 1994-12-30 DE DE59409411T patent/DE59409411D1/de not_active Expired - Lifetime
- 1994-12-30 EP EP94120969A patent/EP0667495B1/de not_active Expired - Lifetime
- 1994-12-30 AT AT94120969T patent/ATE194220T1/de active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4774878A (en) * | 1986-11-12 | 1988-10-04 | Tri City Laboratory Specialists, Inc. | Trimodal piston driven sash operator |
US5240455A (en) * | 1991-08-23 | 1993-08-31 | Phoenix Controls Corporation | Method and apparatus for controlling a fume hood |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105115095A (zh) * | 2015-08-24 | 2015-12-02 | 兰州大学 | 一种用于实验室的通风控制*** |
CN105115095B (zh) * | 2015-08-24 | 2018-01-02 | 兰州大学 | 一种用于实验室的通风控制*** |
Also Published As
Publication number | Publication date |
---|---|
DE59409411D1 (de) | 2000-08-03 |
EP0667495A1 (de) | 1995-08-16 |
ATE194220T1 (de) | 2000-07-15 |
DE4402541A1 (de) | 1995-08-03 |
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