Title:
Drain pump
Document Type and Number:
Japanese Patent JP6091308
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a drainage pump installed in an air conditioner, capable of reducing the vibration/noise of a rotary impeller of the drainage pump.SOLUTION: A rotary impeller 100 comprises a large-diameter vane 150, a small-diameter vane 120, and a ring member 130, and rotates in an arrow Rdirection. A first large-diameter assist vane 160 and a second large-diameter assist vane 170 are provided in rear of the large-diameter vane 150. Upper surfaces 152, 162, and 172 of the large-diameter vane 150, the first large-diameter assist vane 160, and the second large-diameter assist vane 170 are formed gradually lower. A water flow F smoothly flows to suppress the occurrence of cavitation.
Inventors:
Ei Sato
Tomoya Kato
Tomoya Kato
Application Number:
JP2013086830A
Publication Date:
March 08, 2017
Filing Date:
April 17, 2013
Export Citation:
Assignee:
Fuji Koki Co., Ltd.
International Classes:
F04D29/24; F04D1/14
Domestic Patent References:
| JP2013064396A | ||||
| JP2011017262A | ||||
| JP2006029108A | ||||
| JP5312188A | ||||
| JP2012096U | ||||
| JP5312187A |
Attorney, Agent or Firm:
Patent Business Corporation Daiichi International Patent Office