Title:
【発明の名称】階段状バッフル付煙突フード
Document Type and Number:
Japanese Patent JPH0756376
Kind Code:
B2
Abstract:
A fume hood having a step baffle system that improves uniformity of flow under different operating conditions, increases draw along the work surface, and, in general, enhances hood performance. An intermediate baffle plate of the baffle system may be pivotally mounted and may be associated with a remote-control mechanism for adjusting its operating position. A rectangular bellmouth collar at the exhaust opening of the hood contributes in achieving a high level of hood efficiency and permits nearly vertical orientation of the fixed uppermost baffle plate, thereby providing greater work space within the upper portion of the hood chamber. Exhaust ports at the top corners of the upper baffle plate promote and control the vertical flow of gases in the upper portion of the hood chamber to aid in the evacuation of fumes from that region.
Inventors:
Norman Kay Dorhopov
Roger Jay Dufeck
Roger Jay Dufeck
Application Number:
JP32757087A
Publication Date:
June 14, 1995
Filing Date:
December 25, 1987
Export Citation:
Assignee:
Fisher Hamilton Scientific Incorporated
International Classes:
F23J11/00; B01L1/00; B08B15/02; (IPC1-7): F23J11/00; B01L1/00
Other References:
【文献】米国特許4177717(US,A)
Attorney, Agent or Firm:
Soga Doteru (6 people outside)
Next Patent: ２つの副水栓と１つの主水栓からなる分岐水栓