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    A DEVICE FOR MEASURING THE QUALITY OF AIR
    1.
    发明申请
    A DEVICE FOR MEASURING THE QUALITY OF AIR 有权

    公开(公告)号：US20220291110A1

    公开(公告)日：2022-09-15

    申请号：US17640103

    申请日：2020-09-04

    申请人： SAFERA OY

    发明人： Samuli LINTONEN ,  Mikko HALONEN

    IPC分类号： G01N15/14

    摘要： A device for measuring the particle content of air comprises a laser source for generating laser light and for directing it to a target area, an air channel for directing the air subjected to the measurement as an air flow through the target area, and a light detector located adjacent to the target area for detecting bursts of light generated as the particles entrained with the air flow scatter the laser light in the target area. The device comprises a light trap between the laser source and the target area for reducing stray light propagating to the target area. The light trap comprises at least two intermediate walls which are substantially transverse in relation to the propagation direction of the laser light, each of the intermediate walls having an aperture for passage of a desirably limited amount of the laser light through the given intermediate wall. The intermediate walls are part of a same piece manufactured as one continuous block.

    METHOD AND ARRANGEMENT FOR RECOGNIZING A STOVE TYPE
    2.
    发明申请
    METHOD AND ARRANGEMENT FOR RECOGNIZING A STOVE TYPE 有权

    公开(公告)号：US20210400776A1

    公开(公告)日：2021-12-23

    申请号：US17288950

    申请日：2019-10-29

    申请人： SAFERA OY

    发明人： Samuli LINTONEN ,  Tuomo PÄLVILÄ

    IPC分类号： H05B6/06 ,  F24C7/08 ,  H05B6/12

    摘要： A stove guard arrangement includes sensors for detecting events on a stove and for providing detection data, and a programmable processing component for analysing the detection data and for providing exceptional situation data in response to the detection data indicating an exceptional situation defined in the programming of the processing component. The stove guard arrangement comprises a receiver connected to the processing component and arranged to receive radio-frequency interference and to provide corresponding reception data. The processing component is arranged to recognize regular changes in said reception data and derive, on the basis of the recognized regular changes, a conclusion that the stove is an induction stove.