Patent ID: 11927279
Assignee: LIEBHERR-AEROSPACE TOULOUSE SAS
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 0:
1. A pneumatic or electro-pneumatic valve comprising: a valve body comprising an air inlet, an air outlet and an air circulation duct between the air inlet and the air outlet, a closure member movably mounted in said circulation duct between at least one open position in which air may freely circulate from said inlet to said outlet, and a closed position in which the closure member prevents the passage of air from the inlet to said outlet, and control members of said closure member, wherein the valve further comprises a device for cooling said control members so that said valve may be arranged in an environment capable of being subjected to temperatures above the nominal operating temperatures of said control members, the device comprising:
a containment casing adapted to contain said control members of said pneumatic valve,
a fresh air inlet in said containment casing,
an air outlet of said containment casing, which outlet is equipped with an air mover comprising:
an air acceleration column placing said containment casing and said air outlet in fluid communication;
a primary supply, of primary air having a temperature and pressure greater than the temperature and pressure of the fresh air, to the acceleration column,
a secondary supply of secondary air, present in said containment casing, to said acceleration column,
such that said primary air drives and accelerates the secondary air toward said air outlet so as to produce forced ventilation of air in said containment casing between said air inlet and said air outlet.