| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a water pump capable of reducing pulsation transmitted to piping. <P>SOLUTION: The water pump 1 is provided with an impeller 16 including a plurality of impellers 16a and rotating around a rotary shaft 16b, a casing 18, and pipe parts 11, 12 connected to the casing 18. The pipe parts 11, 12 include pipe connection parts 11c, 12c for connecting piping composing a channel to other apparatuses and expansion chamber parts 11b, 12b formed to keep channel section area larger than the pipe connection parts 11c, 12c for inhibiting pulsation of cooling medium. The expansion chamber parts 11b, 12b are arranged between the pipe connection parts 11c, 12c and the casing 18. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
