Heat Pump Water Heating System Using Variable Speed Compressor
    1.
    发明申请
    Heat Pump Water Heating System Using Variable Speed Compressor 审中-公开
    热泵热水系统采用变速压缩机

    公开(公告)号:US20080302118A1

    公开(公告)日:2008-12-11

    申请号:US11997158

    申请日:2005-08-31

    申请人: Yu Chen Lili Zhang

    发明人: Yu Chen Lili Zhang

    IPC分类号: F25B1/00 F28D15/00 F25B39/02

    摘要: A transcritical refrigeration system includes a compressor, a gas cooler, an expansion device, and an evaporator. Refrigerant is circulated though the closed circuit system. Preferably, carbon dioxide is used as the refrigerant. A variable speed drive controls the speed of the refrigerant flowing through the compressor. Varying the speed of the refrigerant flowing through the compressor changes the mass flow rate of the refrigerant in the system to optimize the coefficient of performance.

    摘要翻译: 跨临界制冷系统包括压缩机,气体冷却器,膨胀装置和蒸发器。 制冷剂通过闭路系统循环。 优选使用二氧化碳作为制冷剂。 变速驱动器控制流过压缩机的制冷剂的速度。 改变流过压缩机的制冷剂的速度改变系统中制冷剂的质量流量,以优化性能系数。

    Transcritical heat pump water heating system using auxiliary electric heater
    3.
    发明授权
    Transcritical heat pump water heating system using auxiliary electric heater 有权
    使用辅助电加热器的跨临界热泵热水系统

    公开(公告)号:US07210303B2

    公开(公告)日:2007-05-01

    申请号:US10728292

    申请日:2003-12-04

    申请人: Lili Zhang Yu Chen

    发明人: Lili Zhang Yu Chen

    IPC分类号: F25B39/04 F25B27/00

    摘要: Refrigerant is circulated through a vapor compression system including a compressor, a gas cooler, an expansion device, and an evaporator. An auxiliary electric heater is activated to further heat the heated water exiting the gas cooler when the heating capacity of the system is low. The auxiliary electric heater can be located on the water line exiting the gas cooler, in a water tank that stores the heated water, or on the refrigerant line proximate to the compressor discharge.

    摘要翻译: 制冷剂通过包括压缩机,气体冷却器,膨胀装置和蒸发器的蒸汽压缩系统循环。 当系统的加热能力低时,辅助电加热器被激活以进一步加热离开气体冷却器的加热水。 辅助电加热器可以位于从气体冷却器出来的水线上,在储存加热水的水箱中,或靠近压缩机排放口的制冷剂管线上。

    Control of refrigeration system to optimize coefficient of performance
    4.
    发明授权
    Control of refrigeration system to optimize coefficient of performance 有权
    制冷系统的控制优化性能系数

    公开(公告)号:US07000413B2

    公开(公告)日:2006-02-21

    申请号:US10607283

    申请日:2003-06-26

    申请人: Yu Chen Lili Zhang

    发明人: Yu Chen Lili Zhang

    IPC分类号: F25B41/04

    摘要: A refrigeration system includes a compressor, a gas cooler, an expansion device, and an evaporator. Refrigerant is circulated though the closed circuit system. Preferably, carbon dioxide is used as the refrigerant. As carbon dioxide has a low critical point, systems utilizing carbon dioxide as a refrigerant usually require the refrigeration system to run transcritical. When the system is operating inefficiently, the system is modified so the system operates efficiently. First, a parameter of the system is monitored by a sensor and the then compared to a stored value to determine if the system is operating inefficiently. If the system is operating inefficiently, the system is modified to an efficient system.

    摘要翻译: 制冷系统包括压缩机,气体冷却器,膨胀装置和蒸发器。 制冷剂通过闭路系统循环。 优选使用二氧化碳作为制冷剂。 由于二氧化碳具有低临界点,所以利用二氧化碳作为制冷剂的系统通常需要制冷系统跨临界运行。 当系统运行效率低下时,系统被修改,使系统有效运行。 首先,系统的参数由传感器监控,然后与存储值进行比较,以确定系统是否运行效率低下。 如果系统运行效率低下,系统将被修改为高效的系统。

    Refrigeration system having variable speed fan
    7.
    发明授权
    Refrigeration system having variable speed fan 有权
    具有变速风扇的制冷系统

    公开(公告)号:US06968708B2

    公开(公告)日:2005-11-29

    申请号:US10602114

    申请日:2003-06-23

    IPC分类号: F25B9/00 F25D17/02

    摘要: A transcritical refrigeration system includes a compressor, a gas cooler, an expansion device, and an evaporator. Refrigerant is circulated though the closed circuit system. Preferably, carbon dioxide is used as the refrigerant. A fan moves outdoor air that exchanges heat with the refrigerant across the evaporator. The speed of the fan is regulated to regulate the evaporator pressure and to adapt the evaporator to different environmental conditions to achieve the optimal coefficient of performance. During high ambient conditions, the fan speed is decreased, decreasing the refrigerant mass flowrate in the system. The energy exchange per unit mass of the refrigerant in the gas cooler increases and the work of the fan decreases, increasing the coefficient of performance of the system. During low ambient conditions, the mass flowrate of the system is low and there is more heat transfer thermal resistance on the refrigerant side at the evaporator. The speed of the fan is lowered to decrease the work of the fan. Therefore, the coefficient of performance increases.

    摘要翻译: 跨临界制冷系统包括压缩机,气体冷却器,膨胀装置和蒸发器。 制冷剂通过闭路系统循环。 优选使用二氧化碳作为制冷剂。 风扇移动室外空气,通过蒸发器与制冷剂交换热量。 调节风扇的速度来调节蒸发器压力,并使蒸发器适应不同的环境条件,以达到最佳的性能系数。 在高环境条件下,风扇转速降低,制冷剂质量流量降低。 气体冷却器中每单位质量的制冷剂的能量交换增加,并且风扇的功率减小,从而提高了系统的性能系数。 在低环境条件下,系统的质量流量低,在蒸发器的制冷剂侧有更多的传热热阻。 降低风扇的转速,以减少风扇的工作。 因此,性能系数提高。

    Heat pump water heating system including a compressor having a variable clearance volume
    8.
    发明授权
    Heat pump water heating system including a compressor having a variable clearance volume 有权
    热泵水加热系统包括具有可变间隙容积的压缩机

    公开(公告)号:US06945062B2

    公开(公告)日:2005-09-20

    申请号:US10728354

    申请日:2003-12-04

    申请人: Yu Chen Lili Zhang

    发明人: Yu Chen Lili Zhang

    摘要: A heat pump water heater system includes a compressor that has a variable clearance volume that can be selectively controlled to control the mass flow rate of refrigerant from the compressor. Under higher ambient air temperature conditions, the variable volume is increased to keep refrigerant in a variable clearance volume chamber and to decrease the mass flow rate of the refrigerant from the compressor. Under lower ambient air temperature conditions the variable volume is decreased to increase the mass flow rate. The variable clearance volume allows for maintaining optimum system performance under a variety of ambient air temperature conditions.

    摘要翻译: 热泵热水器系统包括具有可选择性控制的可变间隙容积的压缩机,以控制来自压缩机的制冷剂的质量流量。 在较高的环境空气温度条件下,增加可变容积以将制冷剂保持在可变间隙容积室中并降低来自压缩机的制冷剂的质量流量。 在较低的环境空气温度条件下,可变体积减小以增加质量流量。 可变间隙容积允许在各种环境空气温度条件下保持最佳系统性能。

    Transcritical vapor compression optimization through maximization of heating capacity
    9.
    发明申请
    Transcritical vapor compression optimization through maximization of heating capacity 有权
    通过最大化加热能力进行跨临界蒸汽压缩优化

    公开(公告)号:US20050132735A1

    公开(公告)日:2005-06-23

    申请号:US10738657

    申请日:2003-12-17

    IPC分类号: F25B9/00 F25B30/02 F25B41/00

    摘要: A vapor compression system includes a compressor, a gas cooler, an expansion device, and an evaporator. Refrigerant is circulated through the system. The high side pressure of the vapor compression system is selected to optimize the heating capacity. In one example, the optimal high side pressure is obtained by determining the high side pressure that correlates to the maximum current required to operate to the water pump. In another example, the actual temperature of the water entering the gas cooler, the water exiting the gas cooler, and the ambient air temperature are measured and compared to a predetermined value to determine the optimal high side pressure.

    摘要翻译: 蒸汽压缩系统包括压缩机,气体冷却器,膨胀装置和蒸发器。 制冷剂通过系统循环。 选择蒸气压缩系统的高侧压力以优化加热能力。 在一个示例中,通过确定与对水泵操作所需的最大电流相关的高侧压力来获得最佳高压侧压力。 在另一个实例中,测量进入气体冷却器的水的实际温度,离开气体冷却器的水和环境空气温度,并将其与预定值进行比较,以确定最佳高压侧压力。