摘要 |
An electromagnetic reciprocating fluid apparatus includes a magnetic circuit device in which magnetic pole members 10 and 12 project inward from an annular magnetic circuit member 41 so as to oppose each other. The magnetic pole members 10 and 12, and the annular magnetic circuit member 41 have a uniform thickness. First and second additional annular magnetic circuit members 48 and 50 are set on both sides of the annular magnetic circuit member 41 to constitute a part of the magnetic circuit device, thereby minimizing the increase in magnetic reluctance due to magnetic flux concentration at the joints between the magnetic pole members 10 and 12, and the annular magnetic circuit member 41. |