Turbine bypass working fluid admission

Details Turbine bypass working fluid admission Turbine bypass working fluid admission

1992-04-03

1994-05-17

Bennett, Henry A.

Refrigeration

Air compressor, cooler and expander type

Motor-type expander

62 86, 62 87, 62172, 62401, 60 3907, 415 12, 415 22, F25D 900, F01D 1700

Patent

active

053117492

ABSTRACT:
An air cycle machine (10) has a first stage turbine (60) mounted to a central portion of a common shaft (12), a compressor (50) mounted to the central portion of the shaft (12), a second stage turbine (30) mounted to a first end of the shaft (12), and a fan (40) mounted to a second end of the shaft (12), all for rotation therewith about a longitudinal axis (14). The first and second stage turbines (60, 30) are operative to extract energy from a flow of compressed air for driving the shaft (12), and the fan (40) and the compressor (50), in rotation about the axis (14). A bypass air discharge nozzle (20) is disposed coaxially with the turbine shroud (32) of the outboard turbine (30) at the outlet (134) thereof or downstream thereof at the discharge end (38) of the turbine diffuser (36) so as to receive in a central region the turbine exhaust (3 ) discharging from the turbine (30) and to define an annular flow inlet (28) through which a flow of bypass air (5) is directed into an outer circumferential region thereof to flow substantially parallel to and about the cooled expanded conditioning air exhaust flow (3) discharged from the turbine (30).

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