Ebara Corporation

Takashi Hozumi

Toshiharu Nakazawa

Naoya Yoshida

Tetsuro Sugiura

Yoshinori Ojima

Takanori Inada

Atsushi Oyama

Katsuaki Usui

Kozo Matake

Atsushi Shiokawa

Nobuhito Miyashita

Susumu Miyake

Kensuke Fujita

Shinichiro Sasaki

Yasuto Niina

Provided is a canned motor to be coupled to a vacuum pump and used as a rotary driving source for the vacuum pump. The canned motor includes: a stator core; a rotor provided on an inner side of the stator core; and a non-conductive can provided between the stator core and the rotor. The non-conductive can is configured to separate the stator core and the rotor from each other. The non-conductive can is made of resin, ceramic, or composite material thereof. The non-conductive can is bonded to the stator core with an adhesive.

Canned motor and vacuum pump

A sealing structure for a vacuum pump motor which maintains the sealing properties of the vacuum pump motor in an ensured fashion, including a lead wire which is passed through an opening portion formed in a motor frame to be connected to a motor stator and a seal member which seals the opening portion. The lead wire includes a core wire portion and a covering portion which covers the core wire portion. The lead wire also includes a seal portion formed around at least part of the core wire portion inside the covering portion.

Sealing structure, vacuum pump motor including same sealing structure, and vacuum pump

In order to provide a vacuum pump motor which is free from rotation imbalance, there is provided a vacuum pump motorwhich is connected directly to a pump main shaftof a vacuum pump, including a motor rotorwhich is attached directly or indirectly to the pump main shaftand balance ringswhich are attached directly or indirectly to the pump main shaftat ends thereof which are spaced apart from end portions of a rotor core, wherein the balance ringscontain a material having anticorrosion properties.

Vacuum pump motor and vacuum pump having balance rings

The present invention relates to a dry vacuum pump unit capable of achieving ultimate pressure of about 1 Pa. The vacuum pump unit includes a main pump () disposed at an outside-pressure side, and a booster pump () disposed at a vacuum side. The booster pump () and the main pump () are coupled in series. The booster pump () has a higher pumping speed than that of the main pump (). Each of the main pump () and the booster pump () includes a pair of pump rotors (and), a casing () having an inlet port and an outlet port, and a pair of magnet rotors (and) rotatable with the pair of pump rotors.

Vacuum pump unit

Pump mount base for vacuum compression apparatus

Growing community of inventors

Tokyo, Japan

Takashi Hozumi