公开(公告)号：EP2348217A3

公开(公告)日：2011-11-30

申请号：EP11000544.4

申请日：2011-01-24

申请人： Tuthill Corporation

发明人： Fitzpatrick, Erich R. ,  Buis, Michael R. ,  Jones, Charles R. Jr.

IPC分类号： F04C18/12 ,  F04C29/06

CPC分类号： F04C18/126 ,  F04C29/065 ,  F04C29/068 ,  F04C2240/30

摘要： A roots-style blower (210) has a housing (214), rotors (230) and manifolds (212) for the housing (214). The housing (214) forms an inlet plenum (220), a rotor chamber (224) and a discharge plenum (228). The rotors (230) have straight lobes (232) spaced by pockets (240). The pocket (240X) that traps gas between a leading and following lobe (232) and an inside wall of the rotor chamber (224) is a temporary closed cell (240X). The manifolds (212) and the housing (214) form a pair of back-pass loops (250-251), one for each rotor (230). Each back-pass loop (250-252) comprises a back-pass chamber (250), outer channels (252) from the discharge plenum (228) to the back-pass chamber (250), and inner channels (251) to the rotor chamber (224). Wherein, the back-pass chamber (250) volume as a percentage of closed cell (240X) volume ranges between about fifty-six percent (56%) and one-hundred-seventeen percent (117%).

公开(公告)号：EP2348217B1

公开(公告)日：2013-01-16

申请号：EP11000544.4

申请日：2011-01-24

申请人： Tuthill Corporation

发明人： Fitzpatrick, Erich R. ,  Buis, Michael R. ,  Jones, Charles R. Jr.

IPC分类号： F04C18/12 ,  F04C29/06

CPC分类号： F04C18/126 ,  F04C29/065 ,  F04C29/068 ,  F04C2240/30

公开(公告)号：EP2348217A2

公开(公告)日：2011-07-27

申请号：EP11000544.4

申请日：2011-01-24

申请人： Tuthill Corporation

发明人： Fitzpatrick, Erich R. ,  Buis, Michael R. ,  Jones, Charles R. Jr.

IPC分类号： F04C18/12 ,  F04C29/06

CPC分类号： F04C18/126 ,  F04C29/065 ,  F04C29/068 ,  F04C2240/30

摘要： A roots-style blower (210) has a housing (214), rotors (230) and manifolds (212) for the housing (214). The housing (214) forms an inlet plenum (220), a rotor chamber (224) and a discharge plenum (228). The rotors (230) have straight lobes (232) spaced by pockets (240). The pocket (240X) that traps gas between a leading and following lobe (232) and an inside wall of the rotor chamber (224) is a temporary closed cell (240X). The manifolds (212) and the housing (214) form a pair of back-pass loops (250-251), one for each rotor (230). Each back-pass loop (250-252) comprises a back-pass chamber (250), outer channels (252) from the discharge plenum (228) to the back-pass chamber (250), and inner channels (251) to the rotor chamber (224). Wherein, the back-pass chamber (250) volume as a percentage of closed cell (240X) volume ranges between about fifty-six percent (56%) and one-hundred-seventeen percent (117%).

摘要翻译： 罗茨式鼓风机（210）具有用于壳体（214）的壳体（214），转子（230）和歧管（212）。 壳体214形成进气室220，转子室224和排气室228。 转子（230）具有由凹穴（240）隔开的直瓣（232）。 在前叶和后叶（232）和转子室（224）的内壁之间捕集气体的袋（240X）是临时闭孔（240X）。 歧管（212）和壳体（214）形成一对回流环路（250-251），每个转子（230）一个回路。 每个回程回路（250-252）包括回流室（250），从排气室（228）到回流室（250）的外部通道（252），以及至回流室 转子室（224）。 其中，回流室（250）体积占闭胞（240X）体积百分比的范围在约百分之五十六（56％）至百分之一百一十七（117％）之间。