AIR-AND-FUEL HEAT EXCHANGER Russian patent published in 2004 - IPC

FIELD: heat-exchanging equipment, particularly employing moving conduits.

SUBSTANCE: heat-exchanger is used for cooling rotor blades of axial-flow compressor by cryogenic fuel and provides cooling air circulating through air-gas path of axial-flow compressor. Heat exchange is based on principle of forming coolant (gaseous fuel) circulation zones inside compressor drumdue to interaction between centrifugal and Archimedean forces. To enhance heat exchange part of coolant is passed into air-gas path of axial-flow compressor. Heat-exchanger has rotary drum with blades formed on outer drum surface. Drum defines closed chamber divided by discs into several cavities communicating one to another through central orifices. Fuel-injection centrifugal nozzle is installed on axis of drum rotation and arranged from front side thereof. Fuel-injection nozzle is directed into closed chamber. Installed on opposite side are several nozzles directed out of above chamber. Heat-supply plates are arranged inside drum chamber. Fuel-injection nozzle is formed as hollow shaft and has channels extending transversely to rotational axis thereof. Front drum side has perforations for directing portion of not more than 10% of total flow to compressor inlet.

EFFECT: increasing speed of aircraft having hydrogen engines.

4 cl, 3 dwg