VACUUM PUMP

PROBLEM TO BE SOLVED: To provide a vacuum pump capable of maintaining the pump performance.SOLUTION: In one aspect of the invention, an electric vacuum pump 1 has a pump chamber 28 in which negative pressure is generated, a cylindrical rotor 30 arranged in the pump chamber 28, suction ports 40 for s...

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Bibliographic Details
Main Authors MAKINO KATSUHIKO, WAKAMATSU KEISUKE, YAMANAKA SHOTA, SUGIMOTO ATSUSHI
Format Patent
LanguageEnglish
Japanese
Published 07.04.2016
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Summary:PROBLEM TO BE SOLVED: To provide a vacuum pump capable of maintaining the pump performance.SOLUTION: In one aspect of the invention, an electric vacuum pump 1 has a pump chamber 28 in which negative pressure is generated, a cylindrical rotor 30 arranged in the pump chamber 28, suction ports 40 for sucking air into the pump chamber 28, and discharge ports 42 for discharging air from the inside of the pump chamber 28. The suction ports 40 and the discharge ports 42 are formed in pairs to be arranged on both end sides in the center axis direction of the rotor 30, respectively, and the paired suction ports 40 and the paired discharge ports 42 are arranged at the same positions in the circumferential direction of the rotor 30, respectively.SELECTED DRAWING: Figure 6 【課題】ポンプ性能を維持できるバキュームポンプを提供する。【解決手段】本発明の一態様は、負圧が発生するポンプ室28と、ポンプ室28内に配置される筒状のロータ30と、ポンプ室28内に空気を吸入するための吸入口40と、ポンプ室28内から空気を排出するための排出口42と、を有する電動バキュームポンプ1において、吸入口40と排出口42は、それぞれ、ロータ30の中心軸方向の両端側に配置されるようにして、対をなして形成されており、対をなす吸入口40同士と対をなす排出口42同士は、それぞれ、ロータ30の周方向の同じ位置に配置されている。【選択図】図6
Bibliography:Application Number: JP20140173935