| 摘要 |
A grinding unit (1) comprises a ring burr (2) and a frustoconical burr (3) that together delimit a grinding gap (30) therebetween. A first angle ¸ between a first subset of curved teeth (20a) of the frustoconical burr (3) and the first curved teeth of the ring burr (2) provides a grinding gap (30) having an angle smaller than or equal to 15°, and a second angle Õ between a second subset of curved teeth (20b) of the frustoconical burr (3) and the first curved teeth of the ring burr (2) provides a grinding gap (30) having an angle smaller than or equal to 22°. This grinding unit produces a resulting grinded product, such as grinded coffee beans, with fewer turns than known grinding units and at less effort. The properties and qualities of the resulting grinded products are superior to grinded products obtained with conventional grinding units. In case that coffee is grinded substantially no flavour and aroma are lost by grinding. A cartridge for the grinding units is also provided. |
