Aircraft engine nacelle comprising a system of ice protection
An anti-icing protection system for an aircraft engine nacelle, the nacelle comprising an inner shroud, an air intake lip forming a leading edge of the nacelle, the protection system comprising a heat exchanger device including at least one heat pipe configured to transfer heat emitted by a heat source to the inner shroud.
1. An aircraft engine nacelle comprising an anti-icing protection system, the nacelle comprising:
an inner shroud having an internal face;
an air intake lip having an internal face and forming a leading edge of the nacelle;
a front frame which, with the lip, defines an annular space;
wherein the protection system comprises a heat exchanger device comprising at least one heat pipe configured to transfer heat emitted by a heat source from the annular space to the inner shroud situated downstream of the front frame, wherein the at least one heat pipe is located within the annular space;
a heat-transfer fluid;
at least one evaporator connected thermally to the heat source, the at least one evaporator being configured to extract at least some of the heat supplied by the heat source, the extracted heat being transferred to the heat-transfer fluid;
at least one condenser fixed to the internal face of the inner shroud and situated downstream of the front frame, the at least one condenser being configured to supply at least some of the heat extracted by the at least one evaporator to the inner shroud, the extracted heat being transferred to the condenser or condensers via the heat-transfer fluid; and
the at least one evaporator being fluidically connected to the at least one condenser via the at least one heat pipe in which the heat-transfer fluid circulates.
2. The aircraft engine nacelle according to claim 1 , wherein the at least one evaporator is fixed to the internal face of the air intake lip upstream of the front frame.
3. The aircraft engine nacelle according to claim 1 , wherein the at least one heat pipe is a pulsating heat pipe.
4. The aircraft engine nacelle according to claim 1 , wherein the at least one heat pipe is a loop heat pipe.
5. The aircraft engine nacelle according to claim 1 , wherein the at least one heat pipe comprises at least one liquid pipe configured to convey, from the at least one condenser to the at least one evaporator, the heat-transfer fluid liquefied by cooling in the at least one condenser.
6. The aircraft engine nacelle according to claim 1 , wherein the at least one heat pipe comprises at least one capillary tube containing a constant-volume fluid.