Device for producing a fluid stream of varying composition

Patent · Fri Jan 01 00:00:00 EST 1982

OSTI ID:864385

Moss, Owen R ^[1]; Clark, Mark L ^[1]; Rossignol, E John ^[2]

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1. Kennewick, WA
2. Richland, WA

A device for producing a fluid stream of varying composition comprises a chamber having an inlet at one end and outlet at the other. Between the inlet and outlet there are substantially planar pans or baffles positioned normal to the bulk flow of fluid between the inlet and the outlet. These pans are arranged in pairs. Each pan, except those of the pair most remote from the inlet, is spaced from the walls of the chamber to permit air to flow past it. The pans of each pair are also spaced from each other, in a direction parallel to their planes, leaving an empty space along the mid-plane of the chamber. This produces a circulation and mixing of fluid between the pairs of pans or baffles. A secondary stream of fluid is introduced between two pairs of baffles in the intermediate portion of the chamber, so that the composition of the fluid is different in the portion adjacent to the outlet and the portion adjacent to the inlet. In a specific embodiment, the device is an exposure chamber for experimental animals, and the pans or baffles are catch pans for excrement.

• Research Organization: Battelle Memorial Institute, Columbus, OH (United States)
• DOE Contract Number: AC06-76RL01830
• Assignee: Hazleton Systems, Inc. (Aberdeen, MD)
• Patent Number(s): US 4357903
• OSTI ID: 864385
• Country of Publication: United States
• Language: English

Related Subjects

device
producing
fluid
stream
varying
composition
comprises
chamber
inlet
outlet
substantially
planar
pans
baffles
positioned
normal
bulk
flow
arranged
pairs
pan
pair
remote
spaced
walls
permit
air
past
direction
parallel
planes
leaving
empty
space
mid-plane
produces
circulation
mixing
secondary
introduced
intermediate
portion
adjacent
specific
embodiment
exposure
experimental
animals
catch
excrement
substantially planar
intermediate portion
composition comprises
fluid stream
specific embodiment
direction parallel
varying composition
exposure chamber
experimental animals
flow past
catch pans
empty space
/119/