| 摘要 |
PROBLEM TO BE SOLVED: To provide a turbomachine having good vibration characteristics.SOLUTION: A turbomachine (100a) of the invention includes: a rotary shaft (4); a first disc wheel (3a); a first bearing (1); and a second bearing (2). The first disc wheel (3a) is fixed to the rotary shaft (4) and includes a low pressure surface (31) which receives a relatively low pressure caused by a working fluid when the rotary shaft (4) rotates. The first bearing (1) is disposed at the lower pressure surface (31) side of the first disc wheel and supports the rotary shaft (4). The second bearing (2) is disposed so as to sandwich the first disc wheel (3a) with the first bearing (1) and supports the rotary shaft (4). The rotary shaft (4) includes a first taper part (41) having a diameter which expands toward the first disc wheel (3a). The first bearing (1) includes a first support surface (11) for supporting the first taper part (41). |
