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WO1998031481A8 - Fume hood having a bi-stable vortex - Google Patents

Fume hood having a bi-stable vortex

Info

Publication number
WO1998031481A8
WO1998031481A8 PCT/US1998/000956 US9800956W WO9831481A8 WO 1998031481 A8 WO1998031481 A8 WO 1998031481A8 US 9800956 W US9800956 W US 9800956W WO 9831481 A8 WO9831481 A8 WO 9831481A8
Authority
WO
WIPO (PCT)
Prior art keywords
vortex
hood
sash
fume hood
stable
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.)
Ceased
Application number
PCT/US1998/000956
Other languages
French (fr)
Other versions
WO1998031481A1 (en
Inventor
Robert A Deluca
Robert H Morris
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.)
FLOW SAFE Inc AND LABCRAFTERS Inc JOINTLY
FLOW SAFE Inc AND LABCRAFTERS
Original Assignee
FLOW SAFE Inc AND LABCRAFTERS Inc JOINTLY
FLOW SAFE Inc AND LABCRAFTERS
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 FLOW SAFE Inc AND LABCRAFTERS Inc JOINTLY, FLOW SAFE Inc AND LABCRAFTERS filed Critical FLOW SAFE Inc AND LABCRAFTERS Inc JOINTLY
Priority to JP53460098A priority Critical patent/JP2001518174A/en
Priority to DE69814036T priority patent/DE69814036T2/en
Priority to DK98902812T priority patent/DK0954390T3/en
Priority to AU59616/98A priority patent/AU5961698A/en
Priority to EP98902812A priority patent/EP0954390B1/en
Publication of WO1998031481A1 publication Critical patent/WO1998031481A1/en
Publication of WO1998031481A8 publication Critical patent/WO1998031481A8/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Ventilation (AREA)
  • Air-Flow Control Members (AREA)
  • Prevention Of Fouling (AREA)

Abstract

The flow of air through a fume hood (78) is optimized by producing a bi-stable vortex within the vortex chamber of the fume hood regardless of sash (18) movement. A bi-stable fume hood optimizes capture face velocity to minimize backflow of fume laden air through the hood sash opening. This bi-stable vortex fume hood utilizes a vortex pressure control system to reposition top, center, and bottom slot openings (32, 34, 36) of a baffle in the hood. This baffle moves the bi-stable vortex away from the face when the sash is fully opened and creates a clearing action near the work surface as the sash is closed. An airfoil (76) is placed inside the fume hood chamber and the airfoil has multiple entry pattern, one of which turns the vortex up and away from the open sash window. The other creates flow which washes the work surface of the hood. The interior portion of the vortex chamber utilizes a turning vane (65) in order to decrease dynamic losses and increases bi-stable vortex stability.
PCT/US1998/000956 1997-01-22 1998-01-16 Fume hood having a bi-stable vortex Ceased WO1998031481A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP53460098A JP2001518174A (en) 1997-01-22 1998-01-16 Ventilation hood with bistable vortex
DE69814036T DE69814036T2 (en) 1997-01-22 1998-01-16 SMOKE EXTRACTION WITH BISTABLE FLOW
DK98902812T DK0954390T3 (en) 1997-01-22 1998-01-16 Extraction cabinet with a bistable eddy current
AU59616/98A AU5961698A (en) 1997-01-22 1998-01-16 Fume hood having a bi-stable vortex
EP98902812A EP0954390B1 (en) 1997-01-22 1998-01-16 Fume hood having a bi-stable vortex

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US3599797P 1997-01-22 1997-01-22
US60/035,997 1997-01-22

Publications (2)

Publication Number Publication Date
WO1998031481A1 WO1998031481A1 (en) 1998-07-23
WO1998031481A8 true WO1998031481A8 (en) 1999-04-22

Family

ID=21886003

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1998/000956 Ceased WO1998031481A1 (en) 1997-01-22 1998-01-16 Fume hood having a bi-stable vortex

Country Status (7)

Country Link
EP (1) EP0954390B1 (en)
JP (1) JP2001518174A (en)
AU (1) AU5961698A (en)
DE (1) DE69814036T2 (en)
DK (1) DK0954390T3 (en)
ES (1) ES2197460T3 (en)
WO (1) WO1998031481A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10146000A1 (en) 2001-09-18 2003-01-16 Waldner Laboreinrichtungen Fume cupboard for chemical laboratory uses additional air directed across its inner surfaces for preventing escape of fumes
EP2564948B1 (en) * 2011-09-02 2016-07-27 GFP Gesellschaft für Produktentwicklung und Produktivitätsplanung mbH Extractor and method for reducing the concentration of hazardous materials
RU2487766C1 (en) * 2012-01-12 2013-07-20 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Тюменский государственный нефтегазовый университет" (ТюмГНГУ) Tapered wedge wire powder-gas collector
JP6354312B2 (en) * 2014-05-15 2018-07-11 ダイキン工業株式会社 Air conditioner
CN108237132A (en) * 2017-11-07 2018-07-03 苏州市凯利勋实验室设备有限公司 A kind of automatic air compensation device for vent cabinet
US12064793B2 (en) * 2022-03-01 2024-08-20 Tyco Fire & Security Gmbh Stable vortex fume hood control device
US12090526B2 (en) 2022-03-01 2024-09-17 Tyco Fire & Security Gmbh Stable vortex fume hood control device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3218953A (en) * 1963-02-21 1965-11-23 Hamilton Mfg Co Fume hood construction
GB1595840A (en) * 1978-05-30 1981-08-19 Longworth A L Fume cupboards
US5697838A (en) * 1996-06-04 1997-12-16 Flow Safe Inc. Apparatus and method to optimize fume containment by a hood

Also Published As

Publication number Publication date
DE69814036D1 (en) 2003-06-05
EP0954390A1 (en) 1999-11-10
JP2001518174A (en) 2001-10-09
AU5961698A (en) 1998-08-07
ES2197460T3 (en) 2004-01-01
EP0954390B1 (en) 2003-05-02
EP0954390A4 (en) 2000-04-19
DE69814036T2 (en) 2004-04-08
WO1998031481A1 (en) 1998-07-23
DK0954390T3 (en) 2003-07-28

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