Coanda water extractor

Gas separation – With guide means effecting removal of constituent layer out... – At escape means for heavier constituent

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C055S397000, C055S399000, C055S447000, C055S456000, C096S191000, C062S086000, C062S401000, C062SDIG005

Reexamination Certificate

active

06331195

ABSTRACT:

BACKGROUND OF THE INVENTION
The invention relates to environmental control systems. More specifically, the invention relates to water removal apparatus for an aircraft environmental control system (“ECS”).
Most aircraft air environmental control systems operate on an air cycle refrigeration principle. Compressed air is obtained from a source (such as a compressor section of an aircraft main engine), cooled with ambient air to near-ambient temperature in an air-to-air heat exchanger and then expanded in an air cycle machine to provide a stream of cooled, conditioned air. Water entrained in the air is typically removed by a water extractor. Cooled, conditioned air leaving the environmental control system is supplied to a passenger cabin. Although somewhat expanded, the conditioned air also pressurizes the cabin.
A high pressure water extractor typically removes the entrained water prior to expansion in the air cycle machine, whereas a low pressure water extractor typically removes the entrained water following expansion in the air cycle machine. If the air cycle machine has two cooling stages (i.e., a high pressure stage and a low pressure stage), mid-pressure water separation may be performed on air expanded by the high pressure stage, but prior to expansion in the low pressure stage.
There is an ongoing need to reduce the weight of an aircraft. Reducing the aircraft weight would reduce in-flight fuel consumption which, in turn, would reduce operating costs. Therefore, it would be desirable to reduce the weight of the water extractor to help meet this need.
It would also be desirable to reduce the size (primarily length) of the water extractor. Reducing the size of the water extractor would reduce the size of the environmental control system and thereby make the environmental control system easier to fit in the aircraft. The available envelope for the environmental control system is usually quite small.
It would also be desirable for a lower pressure drop across the water extractor. A lower pressure drop would allow for greater ECS capacity given the same engine performance, or it would reduce engine fuel consumption given the same ECS capacity.
SUMMARY OF THE INVENTION
The invention may be regarded as a water extractor including a swirl section; and a water collector downstream of the swirl section. The water collector includes separate first and second sumps. The second sump is downstream of the first sump. The first sump has an inlet in fluid communication with the outlet of the swirl section; and the second sump has an inlet downstream of the inlet of the first sump.
The two separate sumps allow the water collector to be placed closer to the swirl section. Water droplets that are not captured by the first sump can be captured by the second sump. Moving the water collector closer to the swirl section reduces the overall length, size and weight of the water extractor.


REFERENCES:
patent: 2193209 (1940-03-01), Sandberg
patent: 3603062 (1971-09-01), Robbins et al.
patent: 3713279 (1973-01-01), Moore
patent: 3884660 (1975-05-01), Perry, Jr. et al.
patent: 3885934 (1975-05-01), Eads et al.
patent: 3895930 (1975-07-01), Campolong
patent: 3902876 (1975-09-01), Moen et al.
patent: 4008059 (1977-02-01), Monson et al.
patent: 4179273 (1979-12-01), Montusi
patent: 4550573 (1985-11-01), Rannenberg
patent: 4681610 (1987-07-01), Warner
patent: 4966005 (1990-10-01), Cowell et al.
patent: 5885333 (1999-03-01), Dix
patent: 5887445 (1999-03-01), Murry et al.
patent: 6056798 (2000-05-01), Cox
patent: 6070418 (2000-06-01), Crabtree et al.
patent: 6083291 (2000-07-01), Okada et al.
patent: 27 02148 A (1978-07-01), None
patent: WO 81 01110 A (1981-04-01), None
patent: WO 93 24204 A (1993-12-01), None

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Coanda water extractor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Coanda water extractor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coanda water extractor will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2574867

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.