Patent ID: 11920518
Assignee: SAFRAN
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 0:
1. A cryogenic fuel supply system for a combustion chamber of an aircraft turbine engine, the aircraft turbine engine being a twin-spool turbine engine successively comprising a low-pressure air compressor, a high-pressure air compressor, the combustion chamber, a high-pressure turbine and a low-pressure turbine,
the cryogenic fuel supply system comprising:
a storage tank for cryogenic fuel in a liquid state,
a mixing chamber receiving various flows of cryogenic fuel in a supercritical or gaseous state, the mixing chamber being connected to the combustion chamber in order to supply the combustion chamber with cryogenic fuel in the supercritical or gaseous state,
an auxiliary heating device mounted in a line which connects said the storage tank to the mixing chamber, the auxiliary heating device enabling heating of the cryogenic fuel,
a heat exchanger assembly, connected to the cryogenic fuel tank and to the mixing chamber, and mounted in parallel with the auxiliary heating device, the heat exchanger assembly comprising a cryogenic fuel/oil heat exchanger and a heat exchanger between the cryogenic fuel and air circulating in a primary duct of the aircraft turbine engine, the heat exchanger between the cryogenic fuel and the air circulating in the primary duct of the turbine engine being a heat recuperator performing heat exchange with the air taken in the primary duct, downstream of the turbine of the turbine engine, or being an inter-compressor cooling exchanger, disposed between the low-pressure air compressor and the high-pressure air compressor and performing heat exchange with the air taken in the primary duct, downstream of the low-pressure air compressor of the turbine engine, and being mounted in parallel with the cryogenic fuel/oil heat exchanger,
a flow distribution device disposed upstream of the auxiliary heating device,
at least one flow distribution device disposed upstream of the heat exchanger assembly, and
a central control unit that controls opening and closing of the flow distribution device and the at least one flow distribution device.