发明授权
- 专利标题： Pump apparatus
- 专利标题（中）： 泵装置
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申请号： US370350申请日： 1982-04-21
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公开(公告)号： US4478550A公开(公告)日： 1984-10-23
- 发明人: Kiyohiko Watanabe , Kazuma Matsui , Yoshiyuki Hattori , Toshihiro Takei , Toshiaki Nakamura , Shunsaku Ohnishi
- 申请人： Kiyohiko Watanabe , Kazuma Matsui , Yoshiyuki Hattori , Toshihiro Takei , Toshiaki Nakamura , Shunsaku Ohnishi
- 申请人地址： JPX Kariya
- 专利权人： Nippondenso Co., Ltd.
- 当前专利权人： Nippondenso Co., Ltd.
- 当前专利权人地址： JPX Kariya
- 优先权： JPX56-58105[U] 19810422
- 主分类号： F04D5/00
- IPC分类号： F04D5/00
摘要：
A pump apparatus has a regenerative pump and a motor for driving the regenerative pump. A substantially annular flow passage is formed in the pump housing of the regenerative pump and communicated with a discharge port and a suction port. An impeller is rotatably housed in the pump housing. A plurality of radial vane grooves are formed circumferentially spaced in the outer peripheral portion of each surface of the impeller. A recess is formed in the portion of one of side surfaces of the flow passage aligned axially with the discharge port formed in the other side face of the flow passage.
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