| 摘要 |
<p>A submersible circulation system comprising a motor (12), a first pump (38), a second pump (44) and a casing (62). The motor includes a shaft. The first and second pumps each have an impeller driven by the shaft of the motor. The casing encapsulates at least a portion of the motor to in turn permit the motor to operate while submersed in a fluid.</p> |
