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1. 发明公开

EP2159424A1 VANE TYPE VACUUM PUMP 有权
标题翻译：桶真空泵
公开(公告)号：EP2159424A1
公开(公告)日：2010-03-03
申请号：EP08765458.8
申请日：2008-06-11
申请人： Taiho Kogyo Co., Ltd
发明人： OHTAHARA, Kiyotaka , HAYASHIDA, Kikuji , NOGUCHI, Naoto
IPC分类号： F04C18/344 , F04C25/02 , F04C29/02
CPC分类号： F04C18/3441 , F04C28/28 , F04C29/028
摘要： A vane type vacuum pump 1 is provided in the vicinity of an air intake passage 11 for sucking the air into a pump chamber 2, and communicates a space A on the front side and a space B on the back side of the rotational direction of the vane at the time of the reverse rotation of the vane 6, and includes an escaping groove 21 for allowing a lubricating oil to escape into the space B on the back side from the space A on the front side. The escaping groove 21 is provided in a side plate 4, and a wall surface 21A of the escaping groove which becomes the back side of the rotational direction of the vane at the time of the reverse rotation of the vane 6 becomes an inclined surface whose opening side is further expanded than a bottom 21B of the escaping groove 21. The other wall surface 21C of the escaping groove 21 also is preferably made into the inclined surface whose opening side is further expanded than the bottom.
Comparing with the case where the sectional shape of the escaping groove 21 is made into a square section, the foreign matters and friction powders 22 are allowed to smoothly escape and remove from the inside of the escaping groove 21.

2. 发明公开

EP1850008A1 VANE PUMP 有权
标题翻译：叶片泵
公开(公告)号：EP1850008A1
公开(公告)日：2007-10-31
申请号：EP06712698.7
申请日：2006-01-31
申请人： TAIHO KOGYO CO., LTD.
发明人： KISHI, Yoshinobu , HAYASHIDA, Kikuji , OHTAHARA, Kiyotaka
IPC分类号： F04C18/344 , F04C25/02 , F04C29/02
CPC分类号： F04C29/026 , F04C18/3442 , F04C28/06 , F04C28/28 , F04C29/023 , F04C2240/51 , F04C2240/60 , F04C2270/70
摘要： After a vane 4 passes an oil supply groove 13 formed in a housing 2 due to rotation of a rotor 3, a branch passage 12a of an oil supply passage formed in a shank 3B of the rotor communicates with the oil supply groove 13, then a lubricating oil flows into a pump room 2A through the oil supply groove 13.
Then, owing to a differential pressure between a first space A and a second space B, the lubricating oil which flowed into the first space is spouted in the direction opposite to the rotational direction, being blown against the vane which subsequently passes, thereby sealing a gap between the vane and the pump room can be rapidly carried out.
Even if the lubricating oil is not sufficiently fed into the pump room, a vane pump can rapidly exert its original performance.
摘要翻译：在叶片4由于转子3的旋转而通过形成于壳体2内的供油槽13后，形成于转子的轴部3B的供油路的分支通路12a与供油槽13连通，润滑油通过供油槽13流入泵室2A中。然后，由于第一空间A和第二空间B之间的压差，流入第一空间的润滑油沿与第一空间A相反的方向喷出能够迅速地对随后通过的叶片吹动，从而密封叶片和泵室之间的间隙。即使润滑油没有充分注入泵房，叶片泵也能迅速发挥其原有性能。

3. 发明授权

EP1850007B1 VANE PUMP 有权
公开(公告)号：EP1850007B1
公开(公告)日：2014-05-21
申请号：EP06712697.9
申请日：2006-01-31
申请人： Taiho Kogyo Co., Ltd
发明人： KISHI, Yoshinobu , HAYASHIDA, Kikuji , OHTAHARA, Kiyotaka
IPC分类号： F04C18/344 , F04C25/02 , F04C29/02 , F04C28/06 , F04C28/28
CPC分类号： F04C29/028 , F04C18/3442 , F04C25/02 , F04C28/06 , F04C28/28 , F04C29/023 , F04C2240/51 , F04C2240/60 , F04C2270/70

4. 发明授权

EP1850008B1 VANE PUMP 有权
标题翻译：叶片泵
公开(公告)号：EP1850008B1
公开(公告)日：2014-05-14
申请号：EP06712698.7
申请日：2006-01-31
申请人： Taiho Kogyo Co., Ltd
发明人： KISHI, Yoshinobu , HAYASHIDA, Kikuji , OHTAHARA, Kiyotaka
IPC分类号： F04C18/344 , F04C25/02 , F04C29/02 , F04C28/06 , F04C28/28
CPC分类号： F04C29/026 , F04C18/3442 , F04C28/06 , F04C28/28 , F04C29/023 , F04C2240/51 , F04C2240/60 , F04C2270/70

5. 发明授权

EP2159424B1 VANE TYPE VACUUM PUMP 有权
标题翻译： VANE型真空泵
公开(公告)号：EP2159424B1
公开(公告)日：2018-01-03
申请号：EP08765458.8
申请日：2008-06-11
申请人： Taiho Kogyo Co., Ltd
发明人： OHTAHARA, Kiyotaka , HAYASHIDA, Kikuji , NOGUCHI, Naoto
IPC分类号： F04C18/344 , F04C25/02 , F04C29/02
CPC分类号： F04C18/3441 , F04C28/28 , F04C29/028
摘要： A vane type vacuum pump 1 is provided in the vicinity of an air intake passage 11 for sucking the air into a pump chamber 2, and communicates a space A on the front side and a space B on the back side of the rotational direction of the vane at the time of the reverse rotation of the vane 6, and includes an escaping groove 21 for allowing a lubricating oil to escape into the space B on the back side from the space A on the front side. The escaping groove 21 is provided in a side plate 4, and a wall surface 21A of the escaping groove which becomes the back side of the rotational direction of the vane at the time of the reverse rotation of the vane 6 becomes an inclined surface whose opening side is further expanded than a bottom 21B of the escaping groove 21. The other wall surface 21C of the escaping groove 21 also is preferably made into the inclined surface whose opening side is further expanded than the bottom. Comparing with the case where the sectional shape of the escaping groove 21 is made into a square section, the foreign matters and friction powders 22 are allowed to smoothly escape and remove from the inside of the escaping groove 21.

6. 发明公开

EP1850007A1 VANE PUMP 有权
标题翻译：叶片泵
公开(公告)号：EP1850007A1
公开(公告)日：2007-10-31
申请号：EP06712697.9
申请日：2006-01-31
申请人： TAIHO KOGYO CO., LTD.
发明人： KISHI, Yoshinobu , HAYASHIDA, Kikuji , OHTAHARA, Kiyotaka
IPC分类号： F04C18/344 , F04C25/02 , F04C29/02
CPC分类号： F04C29/028 , F04C18/3442 , F04C25/02 , F04C28/06 , F04C28/28 , F04C29/023 , F04C2240/51 , F04C2240/60 , F04C2270/70
摘要： An oil supply groove 12 in communication with a pump room 2A is formed above a bearing 2B of a housing 2, and an open air groove 14 in communication with an atmospheric air is formed at a position rotated around the bearing 2B by 90° from the oil supply groove. In a shank 3B of a rotor 3, a branch passage 11a branching from an oil passage 11 formed in its axial direction to the diametrical direction of the shank, and an open air passage 13 formed in the direction perpendicular to the branch passage are formed.
Then, the branch passage and the oil supply groove communicate with each other, at the same time, the open air passage and the open air groove are arranged to also communicate with each other, and when the oil passage and the oil supply groove communicate with each other as the rotor stops, then an atmospheric air flowing in from the open air passage eliminates a negative pressure in the pump room, thereby the lubricating oil is prevented from flowing into the pump room in large quantities.
An amount of the lubricating oil flowing into pump room at stop of the rotor can be reduced to prevent the vane from being damaged and an amount of the lubricating oil consumed due to rotation of the rotor can be controlled.
摘要翻译：与泵室2A连通的供油槽12形成在壳体2的轴承2B的上方，并且与大气连通的开放空气槽14形成在围绕轴承2B围绕轴承2B旋转90°的位置处供油槽。在转子3的轴部3B上，形成有从轴向的轴向上的油路11向轴径方向分支的分支流路11a和在与分支流路正交的方向上形成的外部气体流路13。于是，分支通路和供油槽相互连通，同时，开放空气通路和开放空气槽也被布置成彼此连通，并且当油路和供油槽与因此当转子停止时，从大气开放通道流入的大气消除泵室内的负压，从而防止润滑油大量流入泵室。可以减少在转子停止时流入泵室的润滑油的量，以防止叶片损坏并且可以控制由于转子的旋转而消耗的润滑油的量。

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