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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
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.
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公开(公告)号：US20190249920A1
公开(公告)日：2019-08-15
申请号：US16329264
申请日：2017-08-09
申请人： Eppendorf AG
发明人： Simon Clarke , Gary Poole , George Mason
CPC分类号： F25D29/008 , E05B47/0603 , E05B2047/0069 , F25B2500/27 , F25D11/04 , F25D29/00 , F25D29/006 , F25D2400/36 , F25D2600/02
摘要： The invention relates to a grid voltage-operated refrigerating device, in particular an ultra-low-temperature refrigerating device, comprising a refrigerator door (2) which has a closure lever (22) that is pivotally hinged between an open position and a locked position and comprising locking means (24) which are paired with the closure lever, have an electric motor-actuated and/or electromagnetically actuated locking element (26) and lock or release the pivoting of the closure lever depending on a code actuation that can be entered by an operator using a code input unit (20). The locking means and the code input unit are paired with an electronic control unit (14) and grid voltage-independent battery buffering means (13) such that in response to a grid voltage outage, the code actuation and a release for a specified minimum period of time are made possible without a grid voltage supply. Display means (18), which are paired with the control unit and which are provided on the refrigerator door in particular, are designed to allow the current internal refrigerator temperature of the refrigerating device to be displayed in the event of a grid voltage outage at least over the specified minimum period of time.
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