Title:
排水ポンプ
Document Type and Number:
Japanese Patent JP5275264
Kind Code:
B2
Abstract:
A water discharge pump configured in such a manner that, with a cylindrical suction opening (12) immersed in a drain pan, a small impeller (22) within the suction opening (12) is rotated to suck water into the suction opening (12), wherein the quietness is obtained by preventing air from being sucked. The suction opening (12) is provided with a reduced-diameter section (12a) located in the middle of the inside of the suction opening (12) and formed by reducing the inner diameter of the suction opening (12). The reduced-diameter section (12a) is located at a position which is about 30%-50% of the overall length of the small impeller (22) from the lower end (221) of the small impeller (22). The amount of water is controlled by reducing the gap between the suction opening (12) and the small impeller (22) by the reduced-diameter section (12a), and this causes the water within the drain pan to be at a satisfactory level even in a balanced state and prevents air from being sucked. The adhesion of slime is also prevented by a reverse flow at the reduced-diameter section (12a).
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Inventors:
Akinori Furugun
Application Number:
JP2010003681A
Publication Date:
August 28, 2013
Filing Date:
January 12, 2010
Export Citation:
Assignee:
Saginomiya Co., Ltd.
International Classes:
F04D1/14; F04D13/00; F04D29/40; F04D29/54
Domestic Patent References:
| JP4091395A | ||||
| JP2000205188A | ||||
| JP11236899A | ||||
| JP63121790U |
Attorney, Agent or Firm:
Hideo Takino
Sadao Matsumura
Fumio Takino
Sadao Matsumura
Fumio Takino