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Patent Searching and Data


Title:
VACUUM PUMP
Document Type and Number:
WIPO Patent Application WO/2012/055734
Kind Code:
A3
Abstract:
The invention relates to a vacuum pump (1), in particular a screw pump, comprising two displacement body shafts (2, 3) which are drivingly coupled and drive displacement bodies (13, 14), and a motor having a motor rotor (19), a motor shaft (2), and a motor stator (20), wherein a pump housing is further provided, which is partitioned into a working chamber (5) in which the displacement bodies (13, 14) are arranged, and a motor/transmission chamber (7), said chambers being further separated by a partition wall (9) through which one of the displacement body shafts (2, 3) penetrates. In order to disclose a vacuum pump, in particular a screw pump, allowing space-saving and cost-saving assembly and advantageous storage conditions, the motor shaft (2) simultaneously designed as one of the displacement body shafts (2, 3) and to which the motor rotor (19) is fastened, is mounted in the partition wall (9), and the displacement body (13) driven by said displacement body shaft is arranged opposite the motor rotor (19) with respect to the partition wall (9), wherein the displacement body shafts (2, 3) are each also mounted in a working chamber wall forming an outer wall.

Inventors:
BAHNEN RUDOLF (DE)
DREWES UWE (DE)
ROFALL KLAUS (DE)
LOEBEL MARKUS (DE)
Application Number:
PCT/EP2011/068248
Publication Date:
May 10, 2013
Filing Date:
October 19, 2011
Export Citation:
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Assignee:
BECKER GMBH GEBR (DE)
BAHNEN RUDOLF (DE)
DREWES UWE (DE)
ROFALL KLAUS (DE)
LOEBEL MARKUS (DE)
International Classes:
F04C18/16; F01C21/02; F04C15/00; F04C25/02; F04C29/02
Foreign References:
EP1882856A12008-01-30
GB2376505A2002-12-18
US20020044876A12002-04-18
DE19748385A11999-05-06
DE19820523A11999-11-11
Attorney, Agent or Firm:
MÜLLER, Enno et al. (Corneliusstraße 45, Wuppertal, DE)
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