Title:
DRAIN PUMP AND AIR CONDITIONER WITH THE SAME
Document Type and Number:
Japanese Patent JP3711998
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To reduce operation noise of a drain pump in a low pump head.
SOLUTION: The drain pump 8 is provided wit a pump casing 81 and an impeller 82. The pump casing 81 has a drain suction opening 81a for sucking drain water in a lower end thereof, and a drain discharge opening 81b for discharging drain water in a side thereof. The impeller 82 has a shaft part 91 arranged to be extended in the vertical direction inside the pump casing 81, a main impeller 92 arranged on a peripheral side of the shaft part 91, an auxiliary impeller part 94 arranged under the main impeller 92, and a receiver plate part 93 arranged between the main impeller 92 and the auxiliary impeller 94 and having an opening part 93a in a central part thereof. The receiver plate part 93, furthermore, has an annular partition part 93b extended upward from the peripheral edge part thereof. The peripheral edge part of the main impeller 92 is arranged at a position lower than an upper end of the partition part 93b.
Inventors:
Haruo Nakata
Masakazu Hirai
Kazushige Maeda
Hironori Iwanaga
Tsunehisa Sayanagi
Masakazu Hirai
Kazushige Maeda
Hironori Iwanaga
Tsunehisa Sayanagi
Application Number:
JP2004050132A
Publication Date:
November 02, 2005
Filing Date:
February 25, 2004
Export Citation:
Assignee:
Daikin Industries, Ltd.
International Classes:
F04D1/14; F04D29/22; F04D29/24; F24F13/22; (IPC1-7): F04D1/14; F04D29/24; F24F1/00
Domestic Patent References:
| JP2003293976A | ||||
| JP2002005082A | ||||
| JP2002048092A | ||||
| JP2877497B2 | ||||
| JP2591739Y2 |
Attorney, Agent or Firm:
Yukio Ono
Hidetada Kato
Hidetada Kato
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