| 摘要 |
<p>#CMT# #/CMT# The device (1) has a wall (3) pierced with orifices (4) to direct a gas jet (9) e.g. air jet. Each orifice includes a convergent and divergent section. A sending unit (15) e.g. gas propulsion unit, sends the gas jet through the orifice, and the wall is arranged between cavities (10, 11) with different internal pressures, where the gas jet in an outlet of the orifice is supersonic. The wall is secured to a piece of turboshaft engine. #CMT#USE : #/CMT# Heat exchange device for use in a turboshaft engine for cooling a blade and shroud of turbine, defrosting an air inlet casing of jet engine and heating a separation slat (all claimed) in aeronautical field. #CMT#ADVANTAGE : #/CMT# The geometry of the orifice enables accelerating the gas jet through the orifice, and allows the gas jet impacting the object to be cooled or heated at high speed, so as to improve efficiency of the gas jet even when a shear flow exists or the orifice is far from the object to be cooled or heated and allow the device for heating or cooling the object. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic view of a heat exchange device. 1 : Heat exchange device 3 : Wall 4 : Orifices 9 : Gas jet 10, 11 : Cavities 15 : Sending unit.</p> |
