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1.发明授权Refrigeration control systems and methods for modular compact chiller units 有权用于模块化紧凑型冷水机组的制冷控制系统和方法公开(公告)号：US08973379B2
公开(公告)日：2015-03-10
申请号：US12508374
申请日：2009-07-23
CPC分类号： F25B49/02 , F25B25/005 , F25B2339/047 , F25B2400/06 , F25B2400/22 , F25B2500/26 , F25B2500/27 , F25B2600/01 , F25B2600/21 , F25B2600/2513
摘要： A controller for a modular compact chiller unit configured for integration into a refrigeration system utilizing a plurality of modular compact chiller units is shown and described. The controller includes a processing circuit configured to provide startup control, operational control, and shutdown control for the modular compact chiller unit.
摘要翻译： 示出并描述了用于集成到利用多个模块化紧凑型冷却器单元的制冷系统中的模块化紧凑型冷却器单元的控制器。 所述控制器包括处理电路，该处理电路被配置为提供所述模块化紧凑型冷冻机组的启动控制，操作控制和停机控制。
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2.发明授权System and method for secondary coolant pump control for a refrigeration system 有权制冷系统二级冷却液泵控制系统和方法公开(公告)号：US08006507B2
公开(公告)日：2011-08-30
申请号：US12367312
申请日：2009-02-06
申请人： John D. Bittner
发明人： John D. Bittner
CPC分类号： F25D17/02 , F25B2600/13 , Y02B30/745
摘要： A system and method is provided for controlling the operation of secondary coolant pump(s) in a refrigeration system having a secondary coolant system that circulates the coolant to applicable cooling loads, and a primary refrigeration system that chills the coolant in the secondary coolant system. The system and method for controlling the pumps measures the pressure of the plurality of secondary coolant fluid loops, sorts the measurements to identify a secondary coolant fluid loop with a pressure farthest from a setpoint, and adjusts pump speed to compensate for the critical loop (i.e., the secondary coolant fluid loop with a pressure furthest from the setpoint).
摘要翻译： 提供了一种系统和方法，用于控制具有将冷却剂循环到可应用的冷却负载的二次冷却剂系统的制冷系统中的二次冷却剂泵的操作，以及使二次冷却剂系统中的冷却剂冷却的主要制冷系统。 用于控制泵的系统和方法测量多个二次冷却剂流体回路的压力，对测量进行分类，以便识别具有距设定点最远的压力的二次冷却剂流体回路，并且调节泵速度以补偿临界回路（即 ，二次冷却液流体回路的压力最远离设定值）。
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3.发明申请SYSTEM AND METHOD FOR USING A PHOTOVOLTAIC POWER SOURCE WITH A SECONDARY COOLANT REFRIGERATION SYSTEM 审中-公开使用光伏电源与二次冷却器制冷系统的系统和方法公开(公告)号：US20090293523A1
公开(公告)日：2009-12-03
申请号：US12131457
申请日：2008-06-02
申请人： John D. Bittner , John E. Bittner
发明人： John D. Bittner , John E. Bittner
CPC分类号： F25B21/00 , F25B25/005 , F25B2600/13 , Y02B30/745
摘要： A secondary coolant refrigeration system powered primarily by a photovoltaic source and by an alternating current (AC) source as a backup is disclosed. The secondary coolant refrigeration system has a pump for pumping secondary coolant fluid through a secondary coolant fluid loop. The system includes a variable frequency drive for controlling the speed of the pump. The variable frequency drive includes drive circuitry configured to provide variable frequency power to the pump via an output interface. The variable frequency drive also includes a first interface configured to receive power from the photovoltaic source and a second interface configured to receive power from the AC source. The variable frequency drive further includes a circuit configured to switch between providing power to the drive circuitry from the first interface and providing power to the drive circuitry from the second interface. The circuit is further configured to cause the variable speed drive to be powered by the photovoltaic source when the power received from the first interface is adequate and by the AC source when the power received from the first interface is not adequate.
摘要翻译： 公开了主要由光伏源和交流（AC）源作为备用的二次冷却剂制冷系统。 二次冷却剂制冷系统具有用于通过二次冷却剂流体回路泵送二次冷却剂流体的泵。 该系统包括用于控制泵的速度的变频驱动器。 可变频率驱动器包括被配置为经由输出接口向泵提供可变频率功率的驱动电路。 变频驱动器还包括被配置为从光伏源接收功率的第一接口和被配置为从AC源接收功率的第二接口。 可变频率驱动器还包括被配置为在从第一接口向驱动电路提供电力并且从第二接口向驱动电路提供电力之间切换的电路。 该电路还被配置为当从第一接口接收到的功率足够时使得变速驱动器由光电源供电，并且当从第一接口接收的功率不足时，由AC电源引起变速驱动。
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公开(公告)号：US20090293517A1
公开(公告)日：2009-12-03
申请号：US12132384
申请日：2008-06-03
申请人： John D. Bittner
发明人： John D. Bittner
CPC分类号： F25B25/005 , F25B45/00 , F25B2345/001 , F25B2400/22 , F25B2600/13 , Y02B30/745 , Y10T137/7313
摘要： A refrigeration system includes a primary loop that cools a secondary loop that circulates a coolant through a refrigeration load. The secondary loop includes a suction header to receive the coolant from the load, and a discharge header to direct the coolant to the heat exchanger, and a pump to pump the coolant from the suction to the discharge header. A charging loop maintains a pressure of the coolant in the supply header within a predetermined range, and includes an inlet from the discharge header and an outlet to the suction header. A flow nozzle and a valve are located between the inlet and the outlet, and a reservoir of make-up coolant communicates with the flow nozzle. Upon a low pressure condition in the suction header, the valve opens to permit flow of coolant through the flow nozzle to draw in make-up coolant from the reservoir.
摘要翻译： 制冷系统包括主循环，其冷却使冷却剂循环通过制冷负载的次级回路。 次级回路包括用于从负载接收冷却剂的抽吸集管和用于将冷却剂引导至热交换器的排出集管，以及将冷却剂从抽吸泵送到排出集管的泵。 充电回路将供应集管中的冷却剂的压力保持在预定范围内，并且包括来自排放集管的入口和到抽吸集管的出口。 流动喷嘴和阀位于入口和出口之间，并且补充冷却剂的储存器与流动喷嘴连通。 在抽吸集管中的低压条件下，阀打开以允许冷却剂流过流动喷嘴以从储存器中抽出补充冷却剂。
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公开(公告)号：US20110185757A1
公开(公告)日：2011-08-04
申请号：US12699720
申请日：2010-02-03
摘要： A refrigeration system with a multi-function heat exchanger has a first heat exchanger with an internal partition defining a condenser, a subcooler and an evaporator. An expansion device is located external of the heat exchanger and receives condensed refrigerant from the subcooler and provides expanded refrigerant to the evaporator. A compressor circulates the refrigerant through the condenser, the subcooler, and the evaporator. A secondary coolant circulates through the subcooler, the evaporator and the loads. A control system receives refrigerant temperature and pressure signals, and provides a control signal to the expansion device to maintain a temperature of the refrigerant within a predetermined range. A second heat exchanger cools a condensing fluid circulating through the condenser to condense the refrigerant.
摘要翻译： 具有多功能热交换器的制冷系统具有第一热交换器，其具有限定冷凝器，过冷却器和蒸发器的内部分隔件。 膨胀装置位于热交换器的外部，并且从过冷却器接收冷凝的制冷剂，并向膨胀器提供膨胀的制冷剂。 压缩机使制冷剂循环通过冷凝器，过冷却器和蒸发器。 二次冷却剂通过过冷却器，蒸发器和负载循环。 控制系统接收制冷剂温度和压力信号，并向膨胀装置提供控制信号，以将制冷剂的温度保持在预定范围内。 第二个热交换器冷却循环通过冷凝器的冷凝液冷凝制冷剂。
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公开(公告)号：US07849701B2
公开(公告)日：2010-12-14
申请号：US12132384
申请日：2008-06-03
申请人： John D. Bittner
发明人： John D. Bittner
IPC分类号： F25D17/02
CPC分类号： F25B25/005 , F25B45/00 , F25B2345/001 , F25B2400/22 , F25B2600/13 , Y02B30/745 , Y10T137/7313
摘要： A refrigeration system includes a primary loop that cools a secondary loop that circulates a coolant through a refrigeration load. The secondary loop includes a suction header to receive the coolant from the load, and a discharge header to direct the coolant to the heat exchanger, and a pump to pump the coolant from the suction to the discharge header. A charging loop maintains a pressure of the coolant in the supply header within a predetermined range, and includes an inlet from the discharge header and an outlet to the suction header. A flow nozzle and a valve are located between the inlet and the outlet, and a reservoir of make-up coolant communicates with the flow nozzle. Upon a low pressure condition in the suction header, the valve opens to permit flow of coolant through the flow nozzle to draw in make-up coolant from the reservoir.
摘要翻译： 制冷系统包括主循环，其冷却使冷却剂循环通过制冷负载的次级回路。 次级回路包括用于从负载接收冷却剂的抽吸集管和用于将冷却剂引导至热交换器的排出集管，以及将冷却剂从抽吸泵送到排出集管的泵。 充电回路将供应集管中的冷却剂的压力保持在预定范围内，并且包括来自排放集管的入口和到抽吸集管的出口。 流动喷嘴和阀位于入口和出口之间，并且补充冷却剂的储存器与流动喷嘴连通。 在抽吸集管中的低压条件下，阀打开以允许冷却剂流过流动喷嘴以从储存器中抽出补充冷却剂。
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公开(公告)号：US20090260381A1
公开(公告)日：2009-10-22
申请号：US12107644
申请日：2008-04-22
CPC分类号： F25B7/00 , F25B2339/047 , F25B2400/22 , Y10S62/22
摘要： A refrigeration system includes a medium temperature subsystem circulating a coolant in a closed loop between at least one medium temperature chiller and at least one medium temperature load and at least one cascade heat exchanger, and a low temperature subsystem circulating a coolant in a closed loop between at least one low temperature chiller and at least one low temperature load. A cooling circuit is provided for circulating a coolant and includes a first pump and a second pump and a fluid cooler and a valve, and interfaces with the medium temperature chiller and the low temperature chiller. The valve is movable to a closed position to define a first flow path and a second flow path, where the first flow path includes the first pump and the medium temperature chiller and fluid cooler, and the second flow path including the second pump and the low temperature chiller and the cascade heat exchanger.
摘要翻译： 制冷系统包括介质温度子系统，使冷却剂在至少一个介质温度冷却器和至少一个中等温度负载和至少一个级联热交换器之间的闭环中循环，以及将冷却剂循环在闭合回路中的冷却剂 至少一个低温冷却器和至少一个低温负载。 提供冷却回路，用于使冷却剂循环，并且包括第一泵和第二泵以及流体冷却器和阀，并且与介质温度冷却器和低温冷却器接口。 阀可移动到关闭位置以限定第一流动路径和第二流动路径，其中第一流动路径包括第一泵和介质温度冷却器和流体冷却器，并且第二流动路径包括第二泵和低的 温度冷却器和级联热交换器。
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公开(公告)号：US08590328B2
公开(公告)日：2013-11-26
申请号：US12699720
申请日：2010-02-03
摘要： A refrigeration system with a multi-function heat exchanger has a first heat exchanger with an internal partition defining a condenser, a subcooler and an evaporator. An expansion device is located external of the heat exchanger and receives condensed refrigerant from the subcooler and provides expanded refrigerant to the evaporator. A compressor circulates the refrigerant through the condenser, the subcooler, and the evaporator. A secondary coolant circulates through the subcooler, the evaporator and the loads. A control system receives refrigerant temperature and pressure signals, and provides a control signal to the expansion device to maintain a temperature of the refrigerant within a predetermined range. A second heat exchanger cools a condensing fluid circulating through the condenser to condense the refrigerant.
摘要翻译： 具有多功能热交换器的制冷系统具有第一热交换器，其具有限定冷凝器，过冷却器和蒸发器的内部分隔件。 膨胀装置位于热交换器的外部，并且从过冷却器接收冷凝的制冷剂，并向膨胀器提供膨胀的制冷剂。 压缩机使制冷剂循环通过冷凝器，过冷却器和蒸发器。 二次冷却剂通过过冷却器，蒸发器和负载循环。 控制系统接收制冷剂温度和压力信号，并向膨胀装置提供控制信号，以将制冷剂的温度保持在预定范围内。 第二个热交换器冷却循环通过冷凝器的冷凝液冷凝制冷剂。
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公开(公告)号：US20120117996A1
公开(公告)日：2012-05-17
申请号：US12948442
申请日：2010-11-17
申请人： David K. Hinde , John D. Bittner , Shitong Zha , Joseph R. Poland
发明人： David K. Hinde , John D. Bittner , Shitong Zha , Joseph R. Poland
CPC分类号： F25B7/00 , F25B9/002 , F25B2400/06 , F25B2600/21
摘要： A cascade refrigeration system includes an upper portion having at least one modular chiller unit that provides cooling to at least one of a low temperature subsystem having a plurality of low temperature loads, and a medium temperature subsystem having a plurality of medium temperature loads. The modular chiller unit includes a refrigerant circuit having at least a compressor, a condenser, an expansion device, and an evaporator. An ammonia refrigerant mixed with a soluble oil circulates within the refrigerant circuit. A control device may be programmed to modulate the position of the expansion device so that a superheat temperature of the ammonia refrigerant near an outlet of the evaporator fluctuates within a substantially predetermined superheat temperature range to positively return soluble oil from the evaporator to the compressor.
摘要翻译： 级联制冷系统包括具有至少一个模块化冷却器单元的上部，其向具有多个低温负载的低温子系统和具有多个中等温度负载的中温子系统中的至少一个提供冷却。 模块式冷水机组包括至少具有压缩机，冷凝器，膨胀装置和蒸发器的制冷剂回路。 与可溶性油混合的氨制冷剂在制冷剂回路内循环。 可以对控制装置进行编程以调节膨胀装置的位置，使得在蒸发器的出口附近的氨制冷剂的过热温度在基本上预定的过热温度范围内波动，从而将可溶性油从蒸发器积极地返回到压缩机。
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公开(公告)号：US09541311B2
公开(公告)日：2017-01-10
申请号：US12948442
申请日：2010-11-17
申请人： David K. Hinde , John D. Bittner , Shitong Zha , Joseph R. Poland
发明人： David K. Hinde , John D. Bittner , Shitong Zha , Joseph R. Poland
CPC分类号： F25B7/00 , F25B9/002 , F25B2400/06 , F25B2600/21
摘要： A cascade refrigeration system includes an upper portion having at least one modular chiller unit that provides cooling to at least one of a low temperature subsystem having a plurality of low temperature loads, and a medium temperature subsystem having a plurality of medium temperature loads. The modular chiller unit includes a refrigerant circuit having at least a compressor, a condenser, an expansion device, and an evaporator. An ammonia refrigerant mixed with a soluble oil circulates within the refrigerant circuit. A control device may be programmed to modulate the position of the expansion device so that a superheat temperature of the ammonia refrigerant near an outlet of the evaporator fluctuates within a substantially predetermined superheat temperature range to positively return soluble oil from the evaporator to the compressor.
摘要翻译： 级联制冷系统包括具有至少一个模块化冷却器单元的上部，其向具有多个低温负载的低温子系统和具有多个中等温度负载的中温子系统中的至少一个提供冷却。 模块式冷水机组包括至少具有压缩机，冷凝器，膨胀装置和蒸发器的制冷剂回路。 与可溶性油混合的氨制冷剂在制冷剂回路内循环。 可以对控制装置进行编程以调节膨胀装置的位置，使得在蒸发器的出口附近的氨制冷剂的过热温度在基本上预定的过热温度范围内波动，从而将可溶性油从蒸发器积极地返回到压缩机。
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