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    Pump system
    2.
    发明授权
    Pump system 有权

    公开(公告)号：US12085287B2

    公开(公告)日：2024-09-10

    申请号：US16997651

    申请日：2020-08-19

    申请人： GRUNDFOS HOLDING A/S

    发明人： Gert Friis Eriksen

    IPC分类号： F24D3/00 ,  F04D7/00 ,  F04D29/00 ,  F24S10/00 ,  F24S40/00 ,  F24S80/00 ,  G01N29/024

    CPC分类号： F24D3/005 ,  F04D7/00 ,  F04D29/007 ,  F24S10/00 ,  F24S40/00 ,  F24S80/00 ,  G01N29/024 ,  G01N2291/02809

    摘要： A pump (2) system includes a pump, a sensor (22; 28) arranged in or at a flow path (14), and a concentration measurement device measuring a concentration in liquid inside the flow path (14). The concentration measurement device includes the sensor (22; 28), as a concentration sensor, connected to an evaluation device (26) for evaluating readings of the sensor (22; 28). The evaluation device (26) is connected to a further signal source (20; 24), providing at least one further parameter, and is configured to carry out an evaluation of the reading of the sensor (22; 28), taking into account the further parameter provided by the further signal source (20, 24) to output the concentration in the liquid. A solar heating system includes the pump system.

    METHOD FOR DETERMINING A PROPERTY OF A SAMPLE FLUID OR A RESONANT FREQUENCY OF A RESONATOR CELL
    4.
    发明公开
    METHOD FOR DETERMINING A PROPERTY OF A SAMPLE FLUID OR A RESONANT FREQUENCY OF A RESONATOR CELL 审中-公开

    公开(公告)号：US20240102970A1

    公开(公告)日：2024-03-28

    申请号：US18038784

    申请日：2021-11-22

    申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

    发明人： Johannes KAPP ,  Katrin SCHMITT ,  Christian WEBER

    IPC分类号： G01N29/24 ,  G01N29/024 ,  G01N29/036

    CPC分类号： G01N29/2425 ,  G01N29/024 ,  G01N29/036 ,  G01N2291/0215 ,  G01N2291/0217

    摘要： A method including providing an acoustic resonator having an absorption element with a surface portion, providing a sample fluid or a fluid mixture containing the sample fluid with at least one absorption fluid or particles such that the acoustic resonator is filled with the same, the surface portion of the absorption element being in contact with the sample fluid. Irradiating the surface portion of the absorption element with a first electromagnetic radiation such that the absorption element at least partly absorbs the first electromagnetic radiation in the region of the surface portion, or irradiating the fluid mixture with a first electromagnetic radiation such that the absorption fluid or the absorption particles at least partly absorb(s) the first electromagnetic radiation, and so, by way of the absorption, pressure energy is generated in the sample fluid or the fluid mixture, with the first electromagnetic radiation being amplitude modulated or frequency modulated with a modulation frequency. Measuring an acoustic response signal from the acoustic resonator. Determining at least one amplitude or phase of the acoustic response signal.

    DEVICE FOR ACOUSTIC TEMPERATURE MEASUREMENT
    7.
    发明公开
    DEVICE FOR ACOUSTIC TEMPERATURE MEASUREMENT 审中-公开

    公开(公告)号：US20230358619A1

    公开(公告)日：2023-11-09

    申请号：US17786029

    申请日：2020-12-11

    申请人： KIMA PROCESS CONTROL GMBH

    发明人： Peter KALKERT

    IPC分类号： G01K11/24 ,  G01K13/024 ,  G01N29/024 ,  G01N29/22 ,  G01N29/24 ,  G01N29/32 ,  G01N29/44 ,  G01N29/34

    CPC分类号： G01K11/24 ,  G01K13/024 ,  G01N29/024 ,  G01N29/221 ,  G01N29/2437 ,  G01N29/326 ,  G01N29/223 ,  G01N29/4436 ,  G01N29/343 ,  G01N2291/02881 ,  G01N2291/011

    摘要： The invention relates to a device (1) at least for an acoustic temperature measurement in a gaseous medium (M) passing a medium channel (110) by means of runtime measurement of an acoustic pulse (AP) running through the gaseous medium (M) from at least a first transmitter arrangement (TA1) to at least a first receiver arrangement (RA1), the first transmitter arrangement (TA1) comprising a sound pulse generator (2) for the generating the acoustic pulse (AP), which is connected by a first acoustic channel (3) to a transmitter (4) which transmits the acoustic pulse (AP) into the medium (M), the first acoustic channel (3) being of acoustically dispersive design, and, the first receiver arrangement (RA1) comprising a receiver (5) for receiving the acoustic pulse (AP) after it has passed through the medium (M) and for transmitting it via a second acoustic channel (6) to a first microphone (7), preferably a piezoelectric microphone (7), for detecting the acoustic pulse (AP), the first acoustic channel (3) being curved towards the sound pulse generator (2) in such a way that the radiant heat of the medium (M) on the sound pulse generator (2) is at least greatly reduced, wherein at least the transmitter (4) comprises in the first acoustic channel (3) on its side (41) facing the medium (M) to be measured interfering element (42) which reflects a part (RI) of the acoustic pulse (AP) back into the first acoustic channel (3) of the first transmitter arrangement (TA1), in which a second microphone (8), preferably arranged on the side (43) of the transmitter (4) feeing the sound pulse generator (2), is arranged for detecting the back-reflected part (RI) of the acoustic pulse (AP), the device (1) further comprising a pulse discriminator (9) designed to determine the arrival times (AT) of the recorded acoustic pulses (AP) in a suitable way and to transmit them to an evaluation unit (10) designed to determine the temperature of the medium (M) from the runtime of the acoustic pulse (AP) from the transmitter (4) to the receiver (5), taking into account the arrival times (AT) determined by the pulse discriminator and the acoustic pulses (RI, AI) detected by first and second microphones (7,8).