Title:
NON-POSITIVE DISPLACEMENT TYPE PUMP AND LIQUID SUPPLY DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/149382
Kind Code:
A1
Abstract:
A pump unit (4), which is a non-positive displacement type pump provided in a liquid supply device (1), has a first seal section (66) and a second seal section (67) provided between an intake port (53) and a discharge port (48) in the circumferential direction of an impeller (40). An angle between the two straight lines connecting the circumferential ends of each seal portion (66, 67) and the center of rotation of the impeller (40) is 43° or more and 47° or less. Each seal portion (66, 67) has a size making it possible to close at least two through flow paths (63) between both ends in the circumferential direction.
Inventors:
HASUKO TATSUYA (JP)
HORISOKO SHINICHIRO (JP)
TAKEUCHI NAOKI (JP)
OMURA SATOSHI (JP)
KOBAYASHI RYUTARO (JP)
HORISOKO SHINICHIRO (JP)
TAKEUCHI NAOKI (JP)
OMURA SATOSHI (JP)
KOBAYASHI RYUTARO (JP)
Application Number:
PCT/JP2020/001379
Publication Date:
July 23, 2020
Filing Date:
January 16, 2020
Export Citation:
Assignee:
MITSUBA CORP (JP)
International Classes:
F04D5/00; F02M37/08; F02M37/10; F04D29/16; F04D29/66
Foreign References:
| KR100893143B1 | 2009-04-16 | |||
| JP2014206065A | 2014-10-30 | |||
| JP2006291802A | 2006-10-26 | |||
| JP2000230492A | 2000-08-22 | |||
| JPH0849683A | 1996-02-20 | |||
| JP4952180B2 | 2012-06-13 | |||
| JP2015086804A | 2015-05-07 | |||
| JP2019004877A | 2019-01-17 |
Other References:
See also references of EP 3913228A4
Attorney, Agent or Firm:
Eikoh Patent Firm, P.C. (JP)
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