Refrigeration – Air compressor – cooler and expander type – Motor-type expander
Patent
1995-07-21
1996-11-12
Capossela, Ronald C.
Refrigeration
Air compressor, cooler and expander type
Motor-type expander
418 85, F25D 900
Patent
active
055728820
ABSTRACT:
A low-pressure air cycle cooling device for cooling the air in a space. The invention includes a cooling chamber, generally drum-like in form, whose interior is defined by end caps and the chamber inner wall. A powered rotor assembly is carried in the chamber, with rotor vanes carried in slots formed in the rotor. The vanes move outward as the rotor rotates, extending to the vicinity of the chamber wall. Vane tips interact with the air in the vicinity of the chamber wall, producing an air bearing effect that minimizes friction while substantially sealing the volume between adjacent vanes. The chamber is generally ovoid in shape, with the long axis being pinched to produce a waist, demarked by pinch points. In the vicinity of such pinch points the chamber wall is curved inwardly concave, while the remainder of the chamber is curved outwardly convex. Four ports are formed in the chamber wall, two of which communicate with the cooled space and two connect with a heat exchanger. The chamber inner wall is divided into a number of zones for performing thermodynamic operations on parcels of air carried between adjacent vanes. The device operates as a rotary vane pump according to the reverse Brayton cycle, in which parcels of air are collected as a pair of vanes passes an inlet port, the parcel of air is compressed, heat is rejected by the heat exchanger, and the parcel is expanded. Cooled air is then exhausted to the space.
REFERENCES:
patent: 4088426 (1978-05-01), Edwards
patent: 4175398 (1979-11-01), Edwards et al.
patent: 4187692 (1980-02-01), Midolo
patent: 4187693 (1980-02-01), Smolinski
patent: 4261184 (1981-04-01), Stout
Capossela Ronald C.
Johnson Service Company
LandOfFree
Low pressure air cycle cooling device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Low pressure air cycle cooling device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low pressure air cycle cooling device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-554987