Drain pump and air conditioner with the same

摘要

It is an object of the present invention to reduce the operating noise of a drain pump when the head is low. A drain pump (8) comprises a pump casing (81), and an impeller (82). The pump casing (81) comprises: a drain inlet (81a) for sucking in drain water at a lower end part; and a drain outlet (81b) for discharging drain water at a side part. The impeller (82) comprises: a shaft part (91) disposed inside the pump casing (81) so that it extends in the vertical direction; a main blade (92) disposed on the outer circumferential side of the shaft part (91); an auxiliary blade (94) disposed on the lower side of the main blade (92); and a disc shaped dish part (93) disposed between the main blade (92) and the auxiliary blade (94) and comprising an opening (93a) in the center. The dish part (93) further comprises an annular partition part (93b) extending upward from the outer circumferential edge part thereof. The outer circumferential edge part of the main blade (92) is disposed at a position lower than the upper end part of the partition part (93b).