公开(公告)号：US20070245739A1

公开(公告)日：2007-10-25

申请号：US11785646

申请日：2007-04-19

申请人： Richard G. Stretton ,  Pawel R. Zakrzewski

发明人： Richard G. Stretton ,  Pawel R. Zakrzewski

IPC分类号： F02C1/00

CPC分类号： F01D17/105 ,  B64D2033/024 ,  F01D17/148 ,  F02C3/13 ,  F02C6/08 ,  F02C7/141 ,  F02C7/18 ,  F02C7/185 ,  Y02T50/675

摘要： Within a turbine engine a heat exchanger may be provided to cool compressor air flows to be utilized for cabin ventilation or other functions. A fluid flow acting as a coolant for the heat exchanger is generally drawn from the by-pass duct of the engine and a dedicated outlet duct is provided such that the exhausted fluid flow from the heat exchanger is delivered along the conduit duct to a low pressure region. In such circumstances, an appropriate pressure differential across the heat exchanger is maintained for operational efficiency when required, whilst the exhausted fluid flow is isolated and does not compromise the usual engine ventilation vent exit area sizing. Over-sized ventilation vents would create an aerodynamic step and therefore drag upon the thrust of the engine. Typically, the outlet end of the outlet duct has a variable geometry to enable adjustment in the pressure differential across the heat exchanger such that an air fan valve used to control flow rate through the heat exchanger may not be required.

摘要翻译： 在涡轮发动机内，可提供热交换器以冷却用于机舱通风或其他功能的压缩机空气流。 作为热交换器的冷却剂的流体流通常从发动机的旁路管道抽出，并且设置专用的出口管道，使得来自热交换器的排出的流体流沿管道管道被输送到低压 地区。 在这种情况下，当需要时，保持热交换器两端的适当的压力差，同时耗尽的流体流动是隔离的，并且不损害通常的发动机通风口排出口尺寸。 超大尺寸的通风口将产生空气动力学步骤，因此拖动发动机的推力。 通常，出口管道的出口端具有可变的几何形状，使得能够调节跨过热交换器的压力差，从而可能不需要用于控制通过热交换器的流速的空气风扇阀。

公开(公告)号：US07886520B2

公开(公告)日：2011-02-15

申请号：US11785646

申请日：2007-04-19

申请人： Richard G Stretton ,  Pawel R Zakrzewski

发明人： Richard G Stretton ,  Pawel R Zakrzewski

IPC分类号： F02K99/00 ,  F02K3/02

CPC分类号： F01D17/105 ,  B64D2033/024 ,  F01D17/148 ,  F02C3/13 ,  F02C6/08 ,  F02C7/141 ,  F02C7/18 ,  F02C7/185 ,  Y02T50/675

摘要： Within a turbine engine a heat exchanger may be provided to cool compressor air flows to be utilized for cabin ventilation or other functions. A fluid flow acting as a coolant for the heat exchanger is generally drawn from the by-pass duct of the engine and a dedicated outlet duct is provided such that the exhausted fluid flow from the heat exchanger is delivered along the conduit duct to a low pressure region. In such circumstances, an appropriate pressure differential across the heat exchanger is maintained for operational efficiency when required, whilst the exhausted fluid flow is isolated and does not compromise the usual engine ventilation vent exit area sizing. Over-sized ventilation vents would create an aerodynamic step and therefore drag upon the thrust of the engine. Typically, the outlet end of the outlet duct has a variable geometry to enable adjustment in the pressure differential across the heat exchanger such that an air fan valve used to control flow rate through the heat exchanger may not be required.

摘要翻译： 在涡轮发动机内，可提供热交换器以冷却用于机舱通风或其他功能的压缩机空气流。 作为热交换器的冷却剂的流体流通常从发动机的旁路管道抽出，并且提供专用的出口管道，使得来自热交换器的排出的流体流沿导管管道被输送到低压 地区。 在这种情况下，当需要时，保持热交换器两端的适当的压力差，同时耗尽的流体流动是隔离的，并且不损害通常的发动机通风口排出口尺寸。 超大尺寸的通风口将产生空气动力学步骤，因此拖动发动机的推力。 通常，出口管道的出口端具有可变的几何形状，使得能够调节跨过热交换器的压力差，从而可能不需要用于控制通过热交换器的流速的空气风扇阀。