| 摘要 |
<p>A highly efficient and long-life pump is provided through improvement of pump efficiency by extending an effective length of a blade of an impeller and through reduction of friction loss of a thrust bearing. In a pump (110), a suction direction (X) and a discharge direction (Y) of a liquid are approximately perpendicular to each other. The pump (110) includes a shaft (27) positioned downstream of a suction inlet (22); an impeller (25) configured in a disk shape that rotates around the shaft (27), the impeller (25) having a plurality of blades (25c) formed radially in a radial direction from a center area located at a center portion of the disk shape as seen in the suction direction (X), the plurality of blades (25c) being positioned at an approximately same longitudinal position as a longitudinal position of a discharge outlet (23); and a bearing (18-1) that receives the shaft (27), the bearing (18-1) being positioned at the center area of the impeller (25) and having a through hole (18-1c) as a guide portion for guiding the liquid drawn in from the suction inlet (22) to the discharge outlet (23).</p> |
