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Title:
ELECTRIC FLUID PUMP
Document Type and Number:
WIPO Patent Application WO/2020/228584
Kind Code:
A1
Abstract:
An electric fluid pump (100), comprising a pump housing (10), a motor (50) connected to the pump housing (10), and a pump impeller (30) accommodated in the pump housing (10) and driven by the motor (50). The pump housing (10) is provided with a pump housing inlet (11) and a pump housing outlet (12); the pump impeller (30) comprises a pump impeller inlet (33) located at a center and a pump impeller outlet (34) located at a peripheral side; the pump housing inlet (11), the pump impeller inlet (33), the pump impeller outlet (34), and the pump housing outlet (12) are sequentially communicated; the pump housing inlet (11) comprises a columnar first portion (111) and a cone-shaped second portion (112) connected with the first portion (111); the second portion (112) is close to the pump impeller inlet (33), and one end of the second portion (112) close to the pump impeller inlet (33) is provided with a mounting base (113); the pump impeller is sleeved on a supporting shaft (72); one end of the supporting shaft (72) is mounted to the mounting base (113); the pump impeller (30) may rotate relative to the mounting base (113); the mounting base (113) is at least partially accommodated in the pump impeller inlet (33); a flow channel through which a fluid flows is formed between the mounting base (113) and the inner wall of the pump impeller inlet (33). The structure can reduce noises when the electric fluid pump works.

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Inventors:
CHEN ANBANG (CN)
ZOU GUOYUAN (CN)
JING YI (CN)
QIN RUIFENG (CN)
Application Number:
PCT/CN2020/088977
Publication Date:
November 19, 2020
Filing Date:
May 07, 2020
Export Citation:
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Assignee:
JOHNSON ELECTRIC GUANGDONG CO LTD (CN)
International Classes:
B62D5/06; F04D13/06
Foreign References:
CN207583636U2018-07-06
CN107002689A2017-08-01
CN106208591A2016-12-07
EP3434907A12019-01-30
DE102017109253A12018-10-31
CN1633564A2005-06-29
CN104118473A2014-10-29
DE102010037395A12011-05-26
CN208010602U2018-10-26
CN204492951U2015-07-22
Other References:
See also references of EP 3951182A4
Attorney, Agent or Firm:
SHINY INTELLECTUAL PROPERTY FIRM (CN)
Download PDF:
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