PURPOSE: To provide a feed water pump, used for a refrigerator with an automatic ice making machine, at a low cost with high reliability, minimizing the decrease of feed water quantity caused by a bearing hole and preventing the splash of water flowing out of a drip hole.
CONSTITUTION: A pump 31 is formed of a case 37 having a vortex chamber and holding a motor 32 on the axis of the vortex chamber, and an impeller 33 rotatably provided in the vortex chamber. The top face side of the vortex chamber 34 is provided with a small hole 51 communicated with the outside, and a U-shape extended part 52 is provided on the approximately vertical line of the small hole 51. The cylindrical opening of the case 37 is airtightely held by the motor 32 so that air does not leak outside from the vortex chamber 34.
ISHIO HARUYUKI
ASADA MASAHARU
OGURA CHIKAHIRO
