Kabushiki Kaisha Toyota Jidoshokki

Daisuke Sato

Masahiro Kawaguchi

Shinya Yamamoto

Satoru Kuramoto

Osamu Uchiyama

Nobuaki Hoshino

Mamoru Kuwahara

Ryosuke Koshizaka

Mika Fujiwara

A vacuum pump having a rotary shaft that is rotated by a drive source has a main pump and a sub pump. The main pump includes a pump chamber and a gas transferring body that is located in the pump chamber. The main pump is driven by the drive source through the rotary shaft for transferring gas to an exhaust space. The sub pump is connected to the exhaust space for partially exhausting the gas from the exhaust space. The sub pump is driven by the same drive source. The displacement volume of the sub pump is smaller than that of the main pump.

Vacuum pump having main and sub pumps

A vacuum pump has a housing and a pump mechanism accommodated in the housing. An exhaust-passage forming portion is located outside of the housing. The exhaust-passage forming portion forms an exhaust passage, which exhaust passage guides gas discharged from the pump mechanism toward the outside of the vacuum pump. A thermal conductor is connected to the outer surface of the exhaust-passage forming portion. The thermal conductor is made of a material having a thermal conductance of which is greater than that of the material for the exhaust-passage forming portion.

Vacuum pump

Growing community of inventors

Kariya, Japan

Daisuke Sato