US 11,927,279 B2
Device for cooling heat-sensitive control members of a pneumatic or electropneumatic valve, and valve equipped with such a cooling device
Frédéric Bristiel, Toulouse (FR); and Stéphane Fauque, Toulouse (FR)
Assigned to LIEBHERR-AEROSPACE TOULOUSE SAS, Toulouse (FR)
Appl. No. 17/274,423
Filed by LIEBHERR-AEROSPACE TOULOUSE SAS, Toulouse (FR)
PCT Filed Sep. 6, 2019, PCT No. PCT/FR2019/052059
§ 371(c)(1), (2) Date Mar. 8, 2021,
PCT Pub. No. WO2020/049262, PCT Pub. Date Mar. 12, 2020.
Claims priority of application No. 1857986 (FR), filed on Sep. 6, 2018.
Prior Publication US 2022/0049793 A1, Feb. 17, 2022
Int. Cl. F16K 49/00 (2006.01); F02C 9/18 (2006.01); F28F 13/06 (2006.01)
CPC F16K 49/005 (2013.01) [F02C 9/18 (2013.01); F28F 13/06 (2013.01); F05D 2260/221 (2013.01); F05D 2260/608 (2013.01)] 7 Claims
OG exemplary drawing
 
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.