| 摘要 |
PURPOSE: A bearing cooling device including a forced circulating passage and a liquid fuel pump with the same are provided to stably cool a bearing with refrigerant of high pressure. CONSTITUTION: A bearing cooling device including a forced circulating passage comprises a first circulating passage(30), a second circulating passage(35), and a cover(60). The first circulating passage is installed in the outside of the case and delivers materials flowing in through a cooling medium inlet to a cooling medium outlet. The second circulating passage is formed inside a bearing supporting unit and delivers the material being discharged to the bearing. The cover closes the bearings. |
