发明名称 |
ELECTRIC COMPRESSOR, AND METHOD FOR ASSEMBLING SAME |
摘要 |
<p>A main-bearing outer diameter of an electric motor is made smaller than a rotor outer diameter without causing a drop in production efficiency, and the ease of performing a shrink-fitting step is also enhanced by making it possible to mount a rotor to a main shaft in an early stage. A bearing journal portion (14b) of a main shaft (14) of an electric motor is formed in a shape into which an inner race (18b) of a main bearing (18) can be press-fitted from both sides in the axial direction thereof, and, in addition, an outer diameter of the bearing journal portion (14b) is made larger than an outer diameter of a rotor press-fitting portion (14a), whereas a bearing bore portion (5a) of a partition member (5) is formed in a shape into which an outer race (18a) can be press-fitted from both sides in the axial direction thereof. It is preferable that a space (S) into which a press-fitting tool for press-fitting the main bearing (18) can be inserted be provided between the rotor press-fitting portion (14a) of the main shaft (14) and the bearing journal portion (14b) thereof.</p> |
申请公布号 |
EP2541063(A1) |
申请公布日期 |
2013.01.02 |
申请号 |
EP20100846573 |
申请日期 |
2010.08.26 |
申请人 |
MITSUBISHI HEAVY INDUSTRIES, LTD. |
发明人 |
ICHISE, YUKI;HAGITA, TAKAYUKI;ISHIKAWA, MASAYUKI;HIRANO, TAKESHI;WATANABE, TAKAYUKI |
分类号 |
F04B39/00;F04C18/02;F04C29/00;H02K15/14 |
主分类号 |
F04B39/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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