| 摘要 |
PROBLEM TO BE SOLVED: To provide a handpiece which provides higher mechanical power.SOLUTION: Provided is a compressed air handpiece including a handle (32) connected to a head (34) housing a turbine (36). The turbine (36) includes a moving wheel (38) from a periphery (40) of which extends a plurality of blades (42) which define an outer diameter (44) of the moving wheel (38). The handpiece (30) also includes injection means, whose function is to direct onto the blades (42) of the moving wheel (38) a compressed air flow whose pneumatic energy is converted into kinetic energy when the compressed air flow strikes the blades (42) of the moving wheel (38). In the handpiece (30), the compressed air injection means takes the form of an independent insert (46) inside which is arranged a compressed air flow feed pipe (48) and which is mounted inside the handle (32) of the handpiece (30). |
