US 12,071,893 B2
Turbomachine comprising a system for deicing the upstream cone, and associated method
Jacques Russmann, Moissy-Cramayel (FR); Clément Dupays, Moissy-Cramayel (FR); and Jean-Marc Blan, Moissy-Cramayel (FR)
Assigned to SAFRAN AIRCRAFT ENGINES, Paris (FR)
Appl. No. 17/595,283
Filed by SAFRAN AIRCRAFT ENGINES, Paris (FR)
PCT Filed Apr. 21, 2020, PCT No. PCT/FR2020/050677
§ 371(c)(1), (2) Date Nov. 12, 2021,
PCT Pub. No. WO2020/229745, PCT Pub. Date Nov. 19, 2020.
Claims priority of application No. 1904919 (FR), filed on May 13, 2019.
Prior Publication US 2022/0235701 A1, Jul. 28, 2022
Int. Cl. F02C 7/047 (2006.01); F01D 25/02 (2006.01)
CPC F02C 7/047 (2013.01) [F01D 25/02 (2013.01); F05D 2220/323 (2013.01); F05D 2270/301 (2013.01); F05D 2270/303 (2013.01); F05D 2270/304 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A turbomachine comprising a stator, a high-pressure shaft, a low-pressure shaft, and a cone positioned at an upstream end of the turbomachine in a direction of an air flow and secured in rotation to the low-pressure shaft, wherein the high-pressure shaft and the low-pressure shaft are each movable in rotation with respect to the stator, the turbomachine comprising a system for deicing said cone, comprising:
resistive heating elements positioned on an internal wall of said cone,
an energy transfer system between said resistive heating elements and the stator of the turbomachine, the cone being movable in rotation with respect to the stator of the turbomachine,
an electrical power source coupled to the high-pressure shaft and connected to the energy transfer system by a set of switches,
a computer,
the computer being configured so as to:
receive ambient temperature and pressure data, and an operating speed value of the low-pressure shaft,
determine a value of electrical power supplied by the electrical power source,
define a power set point for deicing the cone,
define a duty cycle of the set of switches to deliver electrical power to the resistive heating elements based on the power set point for deicing the cone and the value of electrical power supplied by the electrical power source.