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公开(公告)号：EP3344875A1
公开(公告)日：2018-07-11
申请号：EP15756934.4
申请日：2015-09-04
发明人： KUL, Emin , DES, Enver , PILENZ, Wolfgang
CPC分类号： F04C25/02 , F04C29/12 , F04C29/126 , F04C2240/806 , F16L37/088
摘要： The invention relates to a vacuum pump (10) for a motor vehicle, comprising a housing part (12) which partially encloses a pump chamber (14), wherein the housing part (12) has an inlet channel (20) that leads into a pump chamber inlet opening (22) and has a receptacle (24) upstream of the inlet opening (22) for a connection piece (30), wherein the connection piece (30) comprises a snap ring annular groove (26) on the outside, and the connection piece holder (24) comprises a corresponding snap ring annular groove (28) on the inside, a non-closed snap ring being seated in the annular grooves (26,28).
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公开(公告)号：EP3371457A1
公开(公告)日：2018-09-12
申请号：EP15788030.3
申请日：2015-11-02
IPC分类号： F04C25/02 , F04C29/12 , F04C18/344
CPC分类号： F04C29/128 , F04C18/3441 , F04C25/02 , F04C29/126 , F04C2220/10 , F04C2240/805
摘要： The invention relates to motor vehicle vacuum pump (10), comprising a pump chamber (12), in which a pump rotor (13) rotates in a compressing manner, and an outlet chamber (18), into which the compressed gas escapes from the pump chamber (12). The vacuum pump (10) has a separating wall (16), which separates the pump chamber (12) from the outlet chamber (18), and at least one outlet valve (201, 202) in the separating wall (16), which is designed as a check valve and through which the compressed gas escapes from the pump chamber (12) into the outlet chamber (18). The outlet valve (201, 202) is formed by a valve opening (191, 192) in the separating wall (16), a valve seat (42), which is provided around the valve opening (191, 192), and a leaf spring (401, 402) as a valve body. The leaf spring (401, 402) is formed by a spring body (56) which comprises an attachment point (52) to which the spring body (56) on the separating wall (16) is fixed, and a stop (61) on the spring body side. The distance (A) between the spring-body sided stop (61) and the attachment point (52) is greater than a distance (B) between the attachment point (52) and an opening edge (65) of the valve opening (191, 192) which is adjacent thereto.
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公开(公告)号：EP3353423A1
公开(公告)日：2018-08-01
申请号：EP15766870.8
申请日：2015-09-23
IPC分类号： F04C25/02 , F04C29/12 , F04C18/344
CPC分类号： F04C29/128 , F04C18/00 , F04C18/3441 , F04C25/02 , F04C29/02
摘要： The invention relates to motor vehicle vacuum pump (10), comprising a pump chamber (12), in which a pump rotor (11) rotates in a compressing manner, and an outlet chamber (14), into which the compressed gas escapes from the pump chamber (12). The vacuum pump (10) has a separating wall (22), which separates the pump chamber (12) from the outlet chamber (14), and at least one outlet valve (20
1 , 20
2 ) in the separating wall (22), which is designed as a check valve and through which the compressed gas escapes from the pump chamber (12) into the outlet chamber (14). The outlet valve (201, 202) is formed by a valve opening (24
1 , 24
2 ) in the separating wall (22), a valve seat (30), which is provided around the valve opening (24
1 , 24
2 ), and a leaf spring (40
1 , 40
2 ) as a valve body. The valve seat (30) is formed in a raised manner. The radial overlap (U) of the valve seat (30) and the leaf spring (40
1 , 40
2 ) is less than 1.5 mm, and the radial overhang (UH) of the leaf spring (40
1 , 40
2 ) is greater than 1.0 mm.
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