| 摘要 |
PROBLEM TO BE SOLVED: To provide a rolling bearing for heat pump in which assembly workability is improved and cost is reduced.SOLUTION: A heat pump compressor rotates a rotary shaft rotatably supported by a plurality of bearings at an increased speed by a speed increasing mechanism, and rotates an impeller mounted on the rotary shaft at an increased speed. The plurality of bearings have a fixed side bearing and a free side bearing provided on both sides in the axial direction by sandwiching the speed increasing mechanism. The fixed side bearing has three pieces of angular ball bearings adjacent to each other via an inner ring spacer and an outer ring spacer, and out of the three pieces of angular ball bearings, the bearing adjacent to the speed increasing mechanism side includes a rolling body made of ceramic. Thereby, assembly workability is improved, and cost can be reduced.SELECTED DRAWING: Figure 1 |
