METHOD AND DEVICE FOR GRINDING COFFEE BEANS
    3.
    发明申请
    METHOD AND DEVICE FOR GRINDING COFFEE BEANS 审中-公开
    研磨咖啡豆的方法和装置

    公开(公告)号:US20150122131A1

    公开(公告)日:2015-05-07

    申请号:US14396992

    申请日:2013-04-23

    CPC classification number: A47J42/16 A47J31/42

    Abstract: In a method for grinding coffee beans (5), the beans (5) are ground off bit by bit by applying a device (1) comprising two tools (20; 40, 42), wherein one of the tools (20; 40, 42) is a grinding tool (20) having an abrasive surface (21), wherein the beans (5) and the abrasive surface (21) are made to contact each other and to perform a relative movement with respect to each other, and wherein another of the tools (20; 40, 42) is a bean delimiting tool (40, 42) having a surface (44) against which the beans (5) are retained during the time that they are in contact with the abrasive surface (21). By grinding off coffee beans (5) instead of crushing coffee beans (5) in a conventional manner, it is achieved that the grinding process can be performed at a relatively high speed and a relatively low torque.

    Abstract translation: 在用于研磨咖啡豆(5)的方法中,通过施加包括两个工具(20; 40,42)的装置(1),豆(5)被逐一研磨,其中所述工具(20; 40, 42)是具有研磨表面(21)的研磨工具(20),其中所述豆(5)和所述研磨表面(21)彼此接触并且相对于彼此执行相对运动,并且其中 工具(20; 40,42)中的另一个是具有表面(44)的豆定界工具(40,42),在与磨料表面(21)接触的时间期间豆被保持在其上 )。 通过以常规方式研磨咖啡豆(5)而不是破碎咖啡豆(5),实现了可以以相对高的速度和相对低的扭矩进行研磨处理。

    Particle sensor and sensing method

    公开(公告)号:US10859485B2

    公开(公告)日:2020-12-08

    申请号:US15578759

    申请日:2016-05-31

    Inventor: Johan Marra

    Abstract: A particle sensor includes an aperture for receiving a gas flow with entrained particles, an electrostatic particle charging section, a parallel-plate particle precipitation section; and a sensor for detecting precipitated particles to produce a sensor signal. The sensor signal Isensor is related to an apparent particle number concentration of the particles in the gas flow entering the charging section by a calibration constant S1, such that Isensor=f(Napp, S1), the calibration constant being dependent on a count mean diameter of the particles in the gas flow entering the charging section according to a first relationship. The particle sensor includes a pre-filter positioned upstream from the charging section, the pre-filter filtering a part of the particles from the gas flow entering the pre-filter, a fractional degree of particle filtering depending on the count mean particle diameter of the particles entering the pre-filter according to a second relationship.

    Cleaning device for cleaning an air-ionizing part of an electrode

    公开(公告)号:US10710098B2

    公开(公告)日:2020-07-14

    申请号:US15409850

    申请日:2017-01-19

    Inventor: Johan Marra

    Abstract: A cleaning device for cleaning an air-ionizing part of an electrode. The device comprises a cleaning member arranged to be in physical contact with the air-ionizing part of the electrode, the air-ionizing part of electrode and the cleaning member being arranged to slide relative to each other. The cleaning device further comprises an actuator arranged to activate the relative motion between the air-ionizing part of the electrode and the cleaning member. There is also provided an ionization electrode comprising the air-ionizing part and the cleaning device, as well as a ultrafine particle sensor, an air ionizer or an electrostatic air cleaner comprising such an electrode.

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