초록 ▼

An air cycle refrigeration system which comprises an air-to-air heat exchanger, first and second turbochargers, and first and second ejector pumps. The system air to be cooled is passed through the heat exchanger and into a first turbine, cooling upon expansion and driving the coupled first compress

An air cycle refrigeration system which comprises an air-to-air heat exchanger, first and second turbochargers, and first and second ejector pumps. The system air to be cooled is passed through the heat exchanger and into a first turbine, cooling upon expansion and driving the coupled first compressor. The system air passes from the first turbine to the second turbine, again cooling upon expansion and driving the coupled second compressor. Each compressor is connected with the coolant air outlet of the heat exchanger and draws the coolant air therefrom. The high pressure air produced from the outlets of the compressors are used to drive corresponding ejector pumps. The ejector pumps are connected with the coolant air outlet of the heat exchanger and draw additional air therefrom. The total draw of coolant air through the heat exchanger therefore comprises the total of the inlet air to the two compressors and the induced air drawn from the heat exchanger by the two ejector pumps.

대표청구항 ▼

An air cycle refrigeration system which comprises: an air-to-air heat exchanger including a system air inlet and outlet and a coolant air inlet and outlet, the coolant air outlet of said heat exchanger comprising a discharge plenum; first coupling means for coupling the system air inlet of said heat

An air cycle refrigeration system which comprises: an air-to-air heat exchanger including a system air inlet and outlet and a coolant air inlet and outlet, the coolant air outlet of said heat exchanger comprising a discharge plenum; first coupling means for coupling the system air inlet of said heat exchanger to a source of high-pressure, high temperature system air; second coupling means for coupling the coolant air inlet of said heat exchanger to a source of coolant air; a turbocharger including a turbine drivingly coupled to a compressor, the turbine having an inlet and an outlet, the inlet of the turbine being connected with the system air outlet of said heat exchanger, the compressor having an inlet and an outlet, the inlet of the compressor being connected with the coolant air outlet of said heat exchanger; an ejector pump means having a first inlet connected with the compressor outlet and a second inlet connected with the coolant air outlet of said heat exchanger, said ejector pump means further including an outlet, said ejector pump means being for receiving air from the compressor outlet into the first inlet in a manner to draw additional inlet air from the coolant air outlet and through the second inlet of said ejector pump means and exhausting the air, the outlet system air from the outlet of the heat exchanger driving the turbine and being exhausted therefrom at a reduced temperature, the turbine in turn driving the compressor which draws air from the plenum of said heat exchanger, the compressor exhausting high pressure air from the compressor outlet, the high pressure air from the outlet of the compressor being directed to said ejector pump means and operating to draw additional coolant air from the plenum; compressor outlet control means for controlling the flow of air from the outlet of the compressor to said ejector pump means, and sensor means for sensing the temperature of the air discharged through the outlet of the turbine, said compressor outlet control means being for controlling the flow of air from the outlet of the compressor to said ejector pump means in response to the sensed temperature of the air discharged through the outlet of the turbine.