| 摘要 |
<p>This supercharger comprises a main body 2 having a working chamber 3 in which rotate at least two bodies 4 continuously sealed along at least one generatrix parallel to the axis of this main body 2, and this working chamber 3 is in communication with inlet ducts 14 and outlet ducts 15 which are formed in this main body 2 along directions parallel to its axis. The two rotating bodies 4 and end caps 5, 6 of the main body may each comprise a rigid support structure, e.g. of metal, having an external form obtained by injection moulding plastics material onto the structure (Figs. 14-16). Surfaces on the rotating bodies and the internal surface of the working chamber may be ribbed to enhance sealing (Figs. 3, 10, 12). End faces of plastics plugs inserted into cavities in the rotating bodies may initially be inclined to the facing surfaces of the end caps but become parallel thereto in use due to relative thermal expansion (Fig. 11). <IMAGE></p> |
