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公开(公告)号：US4282719A
公开(公告)日：1981-08-11
申请号：US75044
申请日：1979-09-12
CPC分类号： F25B49/022 , F25B49/025 , F25B2600/021 , Y02B30/741
摘要： The control system disclosed herein regulates a centrifugal compressor which has inlet guide vanes adjustable to vary the compressor capacity. A variable speed motor is connected to drive the compressor, and variation of this motor speed provides another input for regulating the compressor capacity. A control system achieves optimum energy efficiency, while avoiding surge, by the manner in which the motor speed and the inlet guide vane positions are regulated. To do this, a control signal must be derived to indicate the compressor head value. This signal is achieved by providing two signals, one related to the absolute condenser pressure, and the second related to the absolute evaporator pressure. The control system operates on these two signals to provide a third signal which is a function of a ratio, in which the numerator is the difference between the condenser and evaporator pressures, and the denominator is the evaporator pressure. Alternative measurement and processing techniques are described. This signal affords a very good indication of the compressor head and thus achieves increased efficiency of system operation, with consequent energy conservation, especially at lighter loads and low heads.
摘要翻译： 本文公开的控制系统调节离心式压缩机，其具有可调节的入口导向叶片以改变压缩机容量。 连接变速电动机来驱动压缩机，并且该电动机速度的变化提供用于调节压缩机容量的另一个输入。 控制系统通过电动机速度和入口导向叶片位置的调节方式实现最佳的能量效率，同时避免浪涌。 为此，必须导出控制信号以指示压缩机机头值。 该信号通过提供两个信号来实现，一个与绝对冷凝器压力相关，另一个与绝对蒸发器压力相关。 控制系统对这两个信号进行操作，以提供第三个信号，它是一个比例的函数，其中分子是冷凝器和蒸发器压力之差，分母是蒸发器压力。 描述了替代测量和处理技术。 该信号提供了压缩机头的非常好的指示，从而实现了系统操作的更高的效率，从而节约了能量，特别是在较轻的负载和低的头部。
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公开(公告)号：US4355948A
公开(公告)日：1982-10-26
申请号：US235266
申请日：1981-02-17
申请人： Kenneth J. Kountz , Dean K. Norbeck
发明人： Kenneth J. Kountz , Dean K. Norbeck
CPC分类号： F04D27/02 , F04D27/0246
摘要： An adjustable surge and capacity control system for matching a capacity control system to an inverter-driven centrifugal compressor based liquid chiller having unknown surge characteristics. The necessary adaptation of the capacity control circuit to a particular chiller is attained by the provision of two potentiometers which are adjustable to develop a functional which avoids surge and operates the system in an efficient manner at all feasible operating point loads and heads. The use of a circuit employing a pair of potentiometers permits the formation of the appropriate functional with two degrees of shaping flexibility.
摘要翻译： 一种可调节的浪涌和容量控制系统，用于将容量控制系统与具有未知浪涌特性的变频器驱动的离心式压缩机基液体冷却器相匹配。 容量控制电路对特定冷却器的必要调整是通过提供两个电位计来实现的，这两个电位计是可调节的，以开发避免浪涌的功能，并且在所有可行的工作点负载和磁头上以有效的方式操作系统。 使用采用一对电位器的电路允许形成具有两度成形灵活性的适当的功能。
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公开(公告)号：US4282718A
公开(公告)日：1981-08-11
申请号：US75041
申请日：1979-09-12
CPC分类号： F25B49/025 , F25B49/022 , G05D23/1931 , G05D23/24 , F25B2600/021 , Y02B30/741
摘要： An evaporator inlet water temperature control system for controlling the inlet water temperature of an evaporator utilized in an inverter driven centrifugal chiller. The system creates the proper chilled water set point at the evaporator outlet needed to maintain the inlet water at its set point for greater efficiency of operation. Control is accomplished by generating an electrical error signal which is a function of an inlet water set point voltage and the actual inlet water temperature. A logic signal is produced as a function of the error signal detected by the circuit and establishes a dead zone band representing a range in which the error signal is acceptable. Output of the control system is passed to the capacity control circuit of an inverter driven centrifugal compressor chiller. When the inlet water temperature reaches its set point during pull-down, the logic output of the circuit sets a flip-flop which enables transmission gates to control changes in the outlet water set point as needed to balance the load of the cooling system.
摘要翻译： 蒸发器入口水温控制系统，用于控制在逆变器驱动的离心式制冷机中使用的蒸发器的入口水温。 该系统在蒸发器出口处产生适当的冷冻水设定点，将入口水保持在其设定点，以提高操作效率。 通过产生作为入口水设定点电压和实际入口水温度的函数的电气误差信号来实现控制。 产生逻辑信号作为由电路检测到的误差信号的函数，并且建立表示误差信号可接受的范围的死区带。 控制系统的输出传递给变频器驱动的离心式压缩机制冷机的容量控制电路。 当入口水温在下拉时达到设定点时，电路的逻辑输出设置一个触发器，使得传输门能够根据需要控制出水设定点的变化，以平衡冷却系统的负载。
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公开(公告)号：US4275987A
公开(公告)日：1981-06-30
申请号：US75042
申请日：1979-09-12
申请人： Kenneth J. Kountz , Dean K. Norbeck
发明人： Kenneth J. Kountz , Dean K. Norbeck
CPC分类号： F04D27/0246 , F04D27/02
摘要： An adjustable surge and capacity control system for matching a capacity control system to an inverter-driven centrifugal compressor based liquid chiller having unknown surge characteristics. The necessary adaptation of the capacity control circuit to a particular chiller is attained by the provision of two potentiometers which are adjustable to develop a function which avoids surge and operates the system in an efficient manner at all feasible operating point loads and heads. The use of a circuit employing a pair of potentiometers permits the formation of the appropriate function with two degrees of shaping flexibility.
摘要翻译： 一种可调节的浪涌和容量控制系统，用于将容量控制系统与具有未知浪涌特性的变频器驱动的离心式压缩机基液体冷却器相匹配。 容量控制电路对特定冷却器的必要调整是通过提供两个电位计来实现的，这两个电位计是可调节的，以产生避免浪涌并且在所有可行的工作点负载和磁头上以有效的方式操作系统的功能。 使用采用一对电位器的电路允许形成具有两个成形灵活性的适当功能。
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5.发明授权公开(公告)号：US07640767B2
公开(公告)日：2010-01-05
申请号：US11422964
申请日：2006-06-08
IPC分类号： F25D17/02
CPC分类号： F25B49/025 , F25B31/008 , F25B2600/0253 , F25D23/006 , Y02B30/741
摘要： The present invention is directed to a power transformer and VSD mounted on the chiller equipment. The transformer is preferably a liquid-filled transformer rated for medium/high voltage input, and at least two output low voltages, one voltage for the VSD and other power equipment, and another voltage for the control panel and control equipment. The placement of the power transformer on the chiller eliminates the need to allocate additional floor space for an auxiliary transformer or medium/high voltage VSD. The transformer also includes cooling means in the form of a heat exchanger in which the liquid is cooled by circulating condenser water, chilled water or refrigerant from the chiller system. The cooling means may also be connected to cooling coils connected to the VSD. The size of the power transformer is significantly reduced by the use of the chiller system to remove heat from the transformer while in operation, thereby maintaining the ambient temperature rise of the transformer within its rated operating temperature range. The transformer and VSD heat is discharged to the outside ambient eliminating additional cooling requirements for the equipment room.
摘要翻译： 本发明涉及一种安装在冷却器设备上的电力变压器和VSD。 变压器优选为额定为中/高电压输入的液体充满的变压器，以及至少两个输出低电压，用于VSD和其他电力设备的一个电压，以及用于控制面板和控制设备的另一个电压。 将电力变压器放置在冷却器上，无需为辅助变压器或中/高压VSD分配额外的占地面积。 变压器还包括热交换器形式的冷却装置，其中液体通过从冷却器系统循环冷凝器水，冷冻水或制冷剂来冷却。 冷却装置也可以连接到连接到VSD的冷却线圈。 通过使用冷却器系统在运行中除去变压器的热量，可以显着降低电力变压器的尺寸，从而将变压器的环境温度升高保持在其额定工作温度范围内。 变压器和VSD热量排放到外部环境中，消除了机房的额外冷却要求。
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公开(公告)号：US06657217B2
公开(公告)日：2003-12-02
申请号：US09828934
申请日：2001-04-10
IPC分类号： G01N2186
CPC分类号： G01D1/18
摘要： A probe is used to detect axial movement of a rotating part such as a shaft. The probe includes a probe tube portion that protrudes into an annular groove on the rotating part. When the rotating part moves axially, one or the other side surfaces of the groove contacts the probe tube. This contact leads to a changed state of the probe, that is sensed by a sensor.
摘要翻译： 探头用于检测旋转部件（如轴）的轴向运动。 探针包括突出到旋转部分上的环形槽中的探针管部分。 当旋转部件轴向移动时，槽的一个或另一个侧表面接触探针管。 该接触导致探针的改变状态，其由传感器感测。
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7.发明授权Control system for controlling an SCR network to regulate three-phase A-C power flow 失效用于控制SCR网络以调节三相A-C功率流的控制系统
公开(公告)号：US4499534A
公开(公告)日：1985-02-12
申请号：US434018
申请日：1982-10-12
CPC分类号： H02M7/1623
摘要： The power delivered from a three-phase A-C power source and through a network of SCR's (connected, for example, to form a full wave rectifier bridge or to provide an A-C switch) to a load circuit is adjusted by controlling the conduction angles of the SCR's. The control is achieved by developing, from only one of the three alternating phase voltages provided by the A-C power supply, a reference square wave signal of the same frequency and whose amplitude excursions are precisely synchronized or keyed to the zero voltage crossings of the selected phase voltage, even though that phase voltage may include undesired harmonics, noise, transients or other distortion components. Since the influence of the undesired signal components has now been eliminated and since the reference square wave signal also has a fixed phase relationship with the other two phase voltages, logic circuitry may be controlled by the reference square wave signal, and by a d-c control voltage representing a desired power flow to the load circuit, to produce gating signals for triggering the SCR's into conduction at the angles required to translate the desired power to the load circuit. With this arrangement, control of all three phases is made immune to undesired signal components in any of the phase voltages.
摘要翻译： 通过控制三相交流电源和通过SCR网络（例如，连接，例如，形成全波整流桥或提供交流开关）到负载电路的功率来调节功率 SCR的。 该控制通过仅从交流电源提供的三个交流相电压中的仅一个中开发出相同频率的参考方波信号，并且其振幅偏移精确同步或键合到所选相位的零电压交叉点 电压，即使该相电压可能包括不期望的谐波，噪声，瞬变或其他失真分量。 由于现在已经消除了不需要的信号分量的影响，并且由于参考方波信号也与其它两相电压具有固定的相位关系，所以逻辑电路可以由参考方波信号和直流控制电压 表示到负载电路的期望功率流，以产生用于将SCR触发成以将期望功率转换到负载电路所需的角度的导通的门控信号。 利用这种布置，可以在任何相电压中对所有三相的控制免于不需要的信号分量。
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公开(公告)号：US20150219378A1
公开(公告)日：2015-08-06
申请号：US14421058
申请日：2013-08-21
IPC分类号： F25B49/02
CPC分类号： F25B49/022 , F25B49/025 , F25B2600/021 , F25B2600/0253 , F25B2700/151 , H02P23/0004 , H02P29/025 , Y02B30/741
摘要： A chiller system includes a compressor, a condenser and an evaporator in fluid communication. A motor drives the compressor. A variable speed drive powers the motor. An oil heater and pump system circulate heated lubricating oil in the compressor. A control panel is arranged to determine whether an input parameter is greater than or equal to a threshold parameter; deactivate the VSD in response to sensing that the input parameter is less than the threshold parameter; determine at least one chiller capacity control parameter at a point when the VSD is deactivated, and maintain the at least one chiller capacity control parameter while the VSD is deactivated; determine that the input parameter has been restored; determine a motor rotation and motor rotational speed; and in response to determining that the input parameter is restored and the motor is rotating in a forward direction, reactivate the VSD.
摘要翻译： 冷却器系统包括流体连通的压缩机，冷凝器和蒸发器。 电机驱动压缩机。 变速驱动器为电机供电。 油加热器和泵系统在压缩机中循环加热的润滑油。 控制面板被布置为确定输入参数是否大于或等于阈值参数; 响应于感测输入参数小于阈值参数，停用VSD; 在VSD停用时确定至少一个冷冻机容量控制参数，并且在VSD停用时保持至少一个制冷机容量控制参数; 确定输入参数已被恢复; 确定电机旋转和电机转速; 并且响应于确定输入参数被恢复并且电动机沿正向旋转，重新激活VSD。
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公开(公告)号：US07424345B2
公开(公告)日：2008-09-09
申请号：US11872430
申请日：2007-10-15
申请人： Dean K. Norbeck
发明人： Dean K. Norbeck
IPC分类号： G01M1/38
摘要： A method for repairing an HVAC system is disclosed. The method includes monitoring a plurality of sensors positioned throughout the HVAC system and receiving data associated therewith, determining whether the data received from the plurality of sensors is within corresponding predetermined operational parameters, analyzing data determined to be outside the corresponding predetermined operational parameters to diagnose a malfunction of the HVAC system, accessing an on-board bill of materials to determine a proper replacement part to correct the malfunction, automatically ordering the replacement part, and automatically dispatching a service technician to install the replacement part.
摘要翻译： 公开了一种用于修理HVAC系统的方法。 该方法包括监视位于整个HVAC系统中的多个传感器并接收与之相关联的数据，确定从多个传感器接收到的数据是否在相应的预定操作参数内，分析被确定为在相应的预定操作参数之外的数据以诊断 HVAC系统的故障，访问机载物料清单以确定正确的更换部件以纠正故障，自动订购更换部件，并自动派遣维修技术人员安装更换部件。
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公开(公告)号：US07353662B2
公开(公告)日：2008-04-08
申请号：US11314148
申请日：2005-12-21
申请人： Dean K. Norbeck
发明人： Dean K. Norbeck
CPC分类号： H02P1/28 , F25B49/025 , H02K5/225
摘要： A single medium voltage starter box is mounted on a chiller unit with the other components of the chiller system. The starter box can be positioned on the chiller system unit to permit the starter box to be close coupled to the motor, and specifically to the main motor lead exit hub without the need for any power conduit connections between the starter box and the motor. In addition, the starter box also does not require any control interface and receives controls from a control panel. A short conduit connection between the control panel and the starter box is used to provide the necessary connections between the control panel and the starter box.
摘要翻译： 单个中压起动箱与冷却器系统的其他部件安装在冷却器单元上。 起动机箱可以位于冷却器系统单元上，以允许起动箱与电动机紧密联接，特别是与主电动机引线出口轮毂相连，而不需要起动箱和电动机之间的任何电源管道连接。 另外，起动机箱也不需要任何控制接口并从控制面板接收控制。 使用控制面板和起动箱之间的短管道连接来提供控制面板和起动机箱之间的必要连接。
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