| 摘要 |
<p>The fluid pump comprises a housing having a fluid reservoir formed at one end with a fluid inlet port, and at the opposite end with a fluid outlet port. There is an annular wall defining the fluid reservoir between the two ports. It has a pumping device including an electrical motor for pumping a fluid into the fluid reservoir via a pumping opening in the annular wall and a valve assembly within the fluid reservoir producing a positive pressure at one of the ports and a negative pressure at the other of the ports. The housing includes a cover integrally formed with the reservoir and carrying the electrical motor and a casing enclosing the motor and pumping device. One side of the casing is open and attached to the cover, an opposite side of the casing being closed but including an opening snugly receiving the annular wall of the fluid reservoir for rigidifying the housing.</p> |
