EP 4067658 A2 20221005 - VACUUM PUMP APPARATUS
Title (en)
VACUUM PUMP APPARATUS
Title (de)
VAKUUMPUMPENGERÄT
Title (fr)
APPAREIL DE POMPE À VIDE
Publication
Application
Priority
JP 2021054585 A 20210329
Abstract (en)
A vacuum pump apparatus capable of preventing a decrease in temperature of a pump casing due to heat transfer, and capable of maintaining a high temperature in a rotor chamber is disclosed. A side cover is provided between a pump casing and a motor housing. The side cover includes an inner wall portion forming an end surface of the rotor chamber, an outer wall portion located outwardly of the inner wall portion, and a narrow portion located between the inner wall portion and the outer wall portion. The inner wall portion, the outer wall portion, and the narrow portion are an integrally-formed structure, and the narrow portion has a cross-sectional area smaller than cross-sectional areas of the inner wall portion and the outer wall portion.
IPC 8 full level
F04C 18/08 (2006.01); F04C 18/12 (2006.01); F04C 25/02 (2006.01); F04C 29/04 (2006.01)
CPC (source: CN EP KR)
F04C 18/084 (2013.01 - EP); F04C 18/12 (2013.01 - CN); F04C 18/126 (2013.01 - EP); F04C 18/14 (2013.01 - KR); F04C 18/16 (2013.01 - EP); F04C 23/02 (2013.01 - CN KR); F04C 25/02 (2013.01 - CN EP KR); F04C 29/00 (2013.01 - CN); F04C 29/0085 (2013.01 - KR); F04C 29/04 (2013.01 - CN EP KR); F04C 2240/10 (2013.01 - KR); F04C 2240/20 (2013.01 - KR); F04C 2240/30 (2013.01 - CN KR); F04C 2240/40 (2013.01 - KR); F04C 2240/60 (2013.01 - KR); F05B 2210/12 (2013.01 - KR); F05B 2240/10 (2013.01 - KR); F05B 2240/20 (2013.01 - KR); F05B 2240/60 (2013.01 - KR)
Citation (applicant)
- JP 2003035290 A 20030207 - EBARA CORP
- JP 2012251470 A 20121220 - EBARA CORP
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 4067658 A2 20221005; EP 4067658 A3 20221102; CN 115143114 A 20221004; JP 2022151996 A 20221012; KR 20220136156 A 20221007; TW 202244392 A 20221116
DOCDB simple family (application)
EP 22164110 A 20220324; CN 202210304826 A 20220323; JP 2021054585 A 20210329; KR 20220035782 A 20220323; TW 111110862 A 20220323