公开(公告)号：US20070261562A1

公开(公告)日：2007-11-15

申请号：US10592189

申请日：2005-03-03

申请人： Martijn Van Baren ,  Joeke Noordhuis ,  David Johannus Huntink ,  Peter Bouma ,  Hendrik Smitt

发明人： Martijn Van Baren ,  Joeke Noordhuis ,  David Johannus Huntink ,  Peter Bouma ,  Hendrik Smitt

IPC分类号： A47J31/44 ,  B23P17/00

CPC分类号： A47J31/46 ,  Y10T29/49002

摘要： A coffee maker comprises a pump for pressurizing water, a pump tube connected to an outlet side of the pump, and a brewing chamber which is adapted to accommodate a coffee pad. During operation of the coffee maker, the water is heated and pressed through a coffee pad in order to obtain coffee. In order for the performance of the coffee maker to be stable, it is important that a predetermined pressure is obtained in the brewing chamber. The stability of the performance is found to be dependent on a ratio between a length of the pump tube and a wavelength of a wave which is caused by the pump in the pump tube during operation. If said ratio is within a range of 0.3 to 0.7±0.5N, wherein N is an integer, the performance is stable. However, if the ratio is outside of this range, the performance is unstable.

摘要翻译： 咖啡机包括用于对水进行加压的泵，连接到泵的出口侧的泵管和适于容纳咖啡垫的冲泡室。 在咖啡机操作期间，将水加热并通过咖啡垫压制以获得咖啡。 为了使咖啡机的性能稳定，重要的是在酿造室中获得预定的压力。 发现性能的稳定性取决于泵管的长度与由操作期间泵管中的泵引起的波的波长之间的比率。 如果所述比例在0.3至0.7±0.5N的范围内，其中N是整数，性能是稳定的。 但是，如果该比例在该范围之外，则性能不稳定。