公开(公告)号：EP2744707B1

公开(公告)日：2016-09-28

申请号：EP11871042.5

申请日：2011-08-16

申请人： Saab AB

发明人： LIND, Ingela

IPC分类号： B64D37/10 ,  B64D37/24 ,  B64D37/32

CPC分类号： B64D37/10 ,  B64D37/24 ,  B64D37/32 ,  Y10T137/0396 ,  Y10T137/2012 ,  Y10T137/3133 ,  Y10T137/6914

公开(公告)号：EP2744707A1

公开(公告)日：2014-06-25

申请号：EP11871042.5

申请日：2011-08-16

申请人： Saab AB

发明人： LIND, Ingela

IPC分类号： B64D37/10

CPC分类号： B64D37/10 ,  B64D37/24 ,  B64D37/32 ,  Y10T137/0396 ,  Y10T137/2012 ,  Y10T137/3133 ,  Y10T137/6914

摘要： The invention aims at pressurising a volume (2) that needs to have a relative air pressure, in comparison with an ambient pressure, where the ambient air pressure can change rapidly and with large amplitude and where the access to pressurised air is limited. This is solved by a half open system comprising two parallel regulators (9) and (17) and two ejectors (15) and (19) working according to a split range control principle. When the relative air pressure difference is above a desired value of the second regulator (17), only the first regulator and the first ejector work. When the relative air pressure difference is below the desired value of the second regulator (17), both regulators (9) and (17) and ejectors (15) and (19) work. In this way the pressure inside the volume (2) can adapt rapidly to the changes in the ambient pressure, without leaking too much air during a static condition.