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152 条记录 (耗时 0.022 秒)

    A METHOD OF OPERATING AN HVAC SYSTEM
    1.
    发明公开
    A METHOD OF OPERATING AN HVAC SYSTEM 审中-公开

    公开(公告)号：US20240353140A1

    公开(公告)日：2024-10-24

    申请号：US18683947

    申请日：2022-08-22

    申请人： BELIMO HOLDING AG

    发明人： Stefan MISCHLER ,  Ronald AEBERHARD ,  Volkher SCHOLZ

    IPC分类号： F24F11/74 ,  F24F140/20

    CPC分类号： F24F11/74 ,  F24F2140/20 ,  F24F2221/00

    摘要： A method of operating an HVAC system that includes a thermal energy source and a thermal energy transfer device, using a flow regulating device arranged to regulate a flow rate of a fluid between the thermal energy source and the thermal energy transfer device, the method including determining a supply temperature of the fluid, determining a return temperature of the fluid, determining the flow rate of the fluid, and regulating the flow rate of the fluid such as to maintain a target temperature difference between the supply temperature and the return temperature, while ensuring that the return temperature is above a minimum return temperature threshold and the flow rate is above an operational flow rate threshold of the thermal energy transfer device.

    EQUIPMENT MANAGEMENT SYSTEM AND REFRIGERANT AMOUNT ESTIMATION METHOD
    2.
    发明公开
    EQUIPMENT MANAGEMENT SYSTEM AND REFRIGERANT AMOUNT ESTIMATION METHOD 审中-公开

    公开(公告)号：US20240288190A1

    公开(公告)日：2024-08-29

    申请号：US18573537

    申请日：2022-01-13

    申请人： Mitsubishi Electric Corporation

    发明人： Shun KATO ,  Hirotoshi YANO

    IPC分类号： F24F11/36 ,  F24F11/52 ,  F24F11/63 ,  F24F140/20

    CPC分类号： F24F11/36 ,  F24F11/52 ,  F24F11/63 ,  F24F2140/20

    摘要： An equipment management system includes: an equipment having a refrigerant; an acquisition unit configured to acquire measurement information indicating a result of measuring a temperature of the refrigerant in the equipment, electrical characteristics of the equipment, and environmental information around the equipment; and an estimation unit configured to estimate an amount of the refrigerant in the equipment based on the measurement information acquired by the acquisition unit, equipment information on the equipment and equipment installation information on an installation environment of the equipment, the equipment information and the equipment installation information being preset.

    Weighted Return Temperature Limitation
    3.
    发明公开
    Weighted Return Temperature Limitation 审中-公开

    公开(公告)号：US20240255170A1

    公开(公告)日：2024-08-01

    申请号：US18426705

    申请日：2024-01-30

    申请人： Siemens Schweiz AG

    发明人： Karl-Heinz Petry ,  Kuno Marbach

    IPC分类号： F24F11/84 ,  F24F140/20

    CPC分类号： F24F11/84 ,  F24F2140/20

    摘要： Various embodiments of the present disclosure optimize energy usage of an HVAC system. For example, some embodiments include a method comprising: generating a flow through a heat exchanger; determining a return temperature of fluid having passed through heat exchanger; determining a current flow of the fluid through the heat exchanger; and controlling the flow of the fluid based on a comparison of the determined return temperature with a threshold temperature, wherein the threshold temperature is dependent on the current flow.

    Control of heat exchange
    5.
    发明授权
    Control of heat exchange 有权

    公开(公告)号：US11708988B2

    公开(公告)日：2023-07-25

    申请号：US17493948

    申请日：2021-10-05

    申请人： Siemens Schweiz AG

    发明人： Kuno Marbach

    IPC分类号： F24F11/83 ,  F24F11/46 ,  F24F11/64 ,  G05B15/02 ,  F24F140/20

    CPC分类号： F24F11/46 ,  F24F11/64 ,  F24F11/83 ,  G05B15/02 ,  F24F2140/20

    摘要： Various embodiments include a method of controlling heat exchange via a terminal unit of a terminal-side circuit of a system for HVAC with a source-side circuit coupled to the terminal-side circuit comprising: reading a terminal-side supply temperature signal; producing a supply temperature from the terminal-side supply temperature signal; estimating a percentage demand signal as a function of the supply temperature; estimating an actual demand for power by rescaling a value of maximum available power by the percentage demand signal; comparing the actual demand for power to the value of maximum available power; and if the actual demand for power exceeds the value of maximum available power: producing a first flow control signal based on the value of maximum available power; and controlling a flow of a fluid through the source-side circuit based on the first flow control signal.

    Air conditioning system and control method thereof
    9.
    发明授权
    Air conditioning system and control method thereof 有权

    公开(公告)号：US11525600B2

    公开(公告)日：2022-12-13

    申请号：US15195049

    申请日：2016-06-28

    申请人： KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

    发明人： Dae Young Lee

    IPC分类号： F24F11/00 ,  F24F12/00 ,  F24F3/14 ,  F24F11/70 ,  F24F11/30 ,  F24F140/20 ,  F24F110/20 ,  F24F110/50 ,  F24F110/10 ,  F24F120/20

    摘要： An air conditioning control system includes a casing including paths through which air passes, dampers arranged at an entrance and an exit of each of the paths and operated to open or close the entrance and the exit according to a control signal, a heat and mass exchanger including a hygroscopic material for absorbing moisture and arranged across the paths to be rotated with respect to the casing, a driving unit rotating the heat and mass exchanger, a heat exchange unit having a heat transfer medium flowing inside the heat exchange unit and arranged on at least one of the paths, and a controller opening or closing the entrance and the exit of the paths by applying a control signal to the dampers, and changing a rotation speed of the heat and mass exchanger by applying a control signal to the driving unit, according to operation modes.

    Determination of stuck reversing valve
    10.
    发明授权
    Determination of stuck reversing valve 有权

    公开(公告)号：US11193686B2

    公开(公告)日：2021-12-07

    申请号：US16832277

    申请日：2020-03-27

    申请人： Lennox Industries Inc.

    发明人： Amita Brahme ,  Umesh Gokhale

    IPC分类号： F24F11/38 ,  F24F11/86 ,  F24F140/20

    摘要： An HVAC system includes a reversing valve configured to receive compressed refrigerant and direct the refrigerant based on an operating mode of the HVAC system. One or more suction-side sensors measure suction-side properties associated with refrigerant provided to an inlet of the compressor. The suction-side properties comprise a suction-side temperature. One or more liquid-side sensors measure liquid-side properties associated with the refrigerant provided from an outlet of the compressor. A controller monitors the suction-side property and liquid-side property. The controller determines whether the suction-side property is greater than the liquid-side property. If the suction-side temperature is greater than the liquid-side temperature, the reversing valve is determined to be in an equalizing configuration. The equalizing configuration corresponds to a configuration in which the refrigerant provided from the outlet of the compressor is directed to the inlet of the compressor without first being directed to other components of the HVAC system.