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1204 条记录 (耗时 0.026 秒)

    CONTROLLER FOR A COOLING UNIT COMPRESSOR, SYSTEM AND USE
    13.
    发明申请
    CONTROLLER FOR A COOLING UNIT COMPRESSOR, SYSTEM AND USE 审中-公开

    公开(公告)号：US20190234663A1

    公开(公告)日：2019-08-01

    申请号：US16318761

    申请日：2017-07-18

    申请人： Eppendorf AG

    发明人： Rüdiger Uhlendorf ,  Gary Poole ,  George Mason ,  Ted Kao

    IPC分类号： F25B49/02 ,  H02M5/44 ,  H02P27/04 ,  F25B7/00

    CPC分类号： F25B49/022 ,  F25B7/00 ,  F25B49/025 ,  F25B2700/2104 ,  H02M5/44 ,  H02M5/458 ,  H02P1/426 ,  H02P1/44 ,  H02P27/047

    摘要： The invention relates to a control apparatus for a refrigerator compressor having at least one two-phase AC asynchronous motor (K1, K2), having mains connection means (10) for connection to a preferably public voltage supply network Which nominally provides a mains AC voltage of between 85 V and 264 V, in particular between 100 V and 230 V, first voltage converter means (14) which are connected downstream of the mains connection means and are intended to generate an intermediate voltage, in particular an intermediate DC voltage, from the mains AC voltage, second voltage converter means (16-1, 16-2) which are connected downstream of the first voltage converter means and are intended to generate an output signal which is independent of a level and a mains frequency of the mains AC voltage, in particular has a constant voltage and/or frequency in periods, and is intended to control the refrigerator compressor with an AC voltage of a plurality of differently predefinable voltage levels, wherein the mains connection means are assigned voltage detector means (12) for capturing the mains AC voltage, the detector output signal from which can be evaluated by the second voltage converter means or control means (24) assigned to the latter for the purpose of generating a mains-voltage-dependent maximum value for a current of the output signal.

    MULTI-PULSE CONSTANT VOLTAGE TRANSFORMER FOR A VARIABLE SPEED DRIVE IN CHILLER APPLICATIONS
    16.
    发明申请
    MULTI-PULSE CONSTANT VOLTAGE TRANSFORMER FOR A VARIABLE SPEED DRIVE IN CHILLER APPLICATIONS 审中-公开

    公开(公告)号：US20190006976A1

    公开(公告)日：2019-01-03

    申请号：US16126814

    申请日：2018-09-10

    申请人： Johnson Controls Technology Company

    发明人： Zhiqiao Wu ,  John C. Hansen

    IPC分类号： H02P27/04 ,  H01F30/14 ,  H02M1/14

    CPC分类号： H02P27/047 ,  F25B49/025 ,  H01F30/14 ,  H02M1/14 ,  H02M7/068 ,  H02P13/06

    摘要： A multi-pulse transformer with multiple taps provides a constant magnitude voltage output to a variable speed chiller's compressor motor over a range of input voltages. The 3-phase transformer includes primary windings and a plurality of secondary windings. The secondary windings are electromagnetically coupled with the associated primary winding. The primary windings include taps for receiving multiple input AC voltages and the secondary windings have a single output terminal for supplying a predetermined output voltage which, after rectification produces a DC multi-pulse waveform for powering a DC link of a variable speed drive. Alternatively the 3-phase transformer includes multiple taps on the secondary windings. Each of the primary windings has a terminal for receiving an input AC voltage. The taps of the secondary windings provide an output voltage that is converted to a multi-pulse waveform for powering a DC link of a variable speed drive.

    HEAT PUMP-TYPE HEATING DEVICE
    17.
    发明申请
    HEAT PUMP-TYPE HEATING DEVICE 审中-公开

    公开(公告)号：US20180313586A1

    公开(公告)日：2018-11-01

    申请号：US15768368

    申请日：2016-10-17

    申请人： DAIKIN INDUSTRIES, LTD.

    发明人： Teruo NISHIDA ,  Shinji YOSHIKAWA ,  Yukio MATSUSAKA

    IPC分类号： F25B30/02 ,  F24H4/02 ,  F25B49/02

    CPC分类号： F25B30/02 ,  F24F11/89 ,  F24H4/02 ,  F25B1/00 ,  F25B13/00 ,  F25B49/025 ,  F25B2600/112 ,  F25B2700/2103 ,  F25B2700/2106 ,  Y02B30/12

    摘要： The oil level in a compressor is lowered upon activation of the compressor. A heat pump-type heating device of the present invention includes: a refrigerant circuit in which a compressor, a heat-source-side heat exchanger, a motor-operated valve, and a target-side heat exchanger are provided; and an outdoor fan which is provided for the heat-source-side heat exchanger. The target-side heat exchanger is capable of heating, by a refrigerant, fluid supplied from outside. The rotation number of the outdoor fan upon activation of the compressor when a difference between a temperature of the fluid supplied to the target-side heat exchanger and an outside temperature is equal to or larger than a predetermined temperature difference is smaller than the rotation number when the difference is smaller than the predetermined temperature difference.