Heat Exchanger Arrangement
    1.
    发明申请
    Heat Exchanger Arrangement 审中-公开
    换热器排列

    公开(公告)号:US20080184713A1

    公开(公告)日:2008-08-07

    申请号:US11908408

    申请日:2005-12-30

    IPC分类号: F25B1/00 F25B41/06

    摘要: A refrigeration system includes a compressor for driving a refrigerant along a flow path in at least a first mode of system operation; a first heat exchanger along the flow path downstream of the compressor in the first mode; a second heat exchanger along the flow path upstream of the compressor in the first mode; and a pressure regulator or expansion device in the flow path downstream of the first heat exchanger and upstream of the second heat exchanger in the first mode, wherein the first heat exchanger is positioned within a housing which defines a flow path for heat exchange fluid and the housing defines a zone of reduced flow area along the flow path, and wherein the first heat exchanger is positioned in the zone of reduced flow area.

    摘要翻译: 制冷系统包括用于在至少第一系统操作模式中沿着流动路径驱动制冷剂的压缩机; 沿第一模式的压缩机下游的流动路径的第一热交换器; 在所述第一模式中沿着所述压缩机的上游的所述流动路径的第二热交换器; 以及在第一模式中在第一热交换器下游和第二热交换器的上游的流动路径中的压力调节器或膨胀装置,其中第一热交换器定位在限定用于热交换流体的流动路径的壳体内, 壳体限定沿着流动路径减小的流动面积的区域,并且其中第一热交换器定位在减小流动面积的区域中。

    Accumulator Integration with Heat Exchanger Header
    2.
    发明申请
    Accumulator Integration with Heat Exchanger Header 审中-公开
    蓄热器与换热器头部集成

    公开(公告)号:US20080190122A1

    公开(公告)日:2008-08-14

    申请号:US11908450

    申请日:2005-12-30

    IPC分类号: F25D17/00 F25B39/02

    摘要: A refrigeration system includes a compressor for driving a refrigerant along a flow path in at least a first mode of system operation; a first heat exchanger along the flow path downstream of the compressor in the first mode; a second heat exchanger along the flow path upstream of the compressor in the first mode; and an expansion device in the flow path downstream of the first heat exchanger and upstream of the second heat exchanger in the first mode, wherein the second heat exchanger includes a combined header and accumulator for collecting liquid and vapor refrigerant.

    摘要翻译: 制冷系统包括用于在至少第一系统操作模式中沿着流动路径驱动制冷剂的压缩机; 沿第一模式的压缩机下游的流动路径的第一热交换器; 在所述第一模式中沿着所述压缩机的上游的所述流动路径的第二热交换器; 以及在第一模式中在第一热交换器下游和第二热交换器的上游的流路中的膨胀装置,其中第二热交换器包括用于收集液体和蒸气制冷剂的组合集管和蓄能器。

    Multi-Part Heat Exchanger
    3.
    发明申请
    Multi-Part Heat Exchanger 审中-公开
    多部件换热器

    公开(公告)号:US20080184731A1

    公开(公告)日:2008-08-07

    申请号:US11908418

    申请日:2005-12-30

    IPC分类号: F25B1/00

    摘要: A refrigeration system includes a compressor for driving a refrigerant along a flow path in at least a first mode of system operation; a first heat exchanger along the flow path downstream of the compressor in the first mode; a second heat exchanger along the flow path upstream of the compressor in the first mode; and a pressure regulator or expansion device in the flow path downstream of the first heat exchanger and upstream of the second heat exchanger in the first mode, wherein the first heat exchanger comprises a plurality of heat exchanger components arranged along a flow path of heat exchange fluid for the first heat exchanger. The heat exchanger components can be positioned in smaller available areas within the unit and thereby use space more efficiently.

    摘要翻译: 制冷系统包括用于在至少第一系统操作模式中沿着流动路径驱动制冷剂的压缩机; 沿第一模式的压缩机下游的流动路径的第一热交换器; 在所述第一模式中沿所述压缩机上游的所述流动路径的第二热交换器; 以及在第一模式中在第一热交换器下游和第二热交换器的上游的流动路径中的压力调节器或膨胀装置,其中第一热交换器包括沿着热交换流体的流动路径布置的多个热交换器部件 用于第一个热交换器。 热交换器部件可以定位在单元内较小的可用区域中,从而更有效地使用空间。

    Defrost mode for HVAC heat pump systems
    9.
    发明授权
    Defrost mode for HVAC heat pump systems 有权
    HVAC热泵系统的除霜模式

    公开(公告)号:US07707842B2

    公开(公告)日:2010-05-04

    申请号:US11744339

    申请日:2007-05-04

    IPC分类号: F25D21/06

    摘要: A heat pump, and in particular a heat pump for heating a hot water supply is provided with an improved defrost mode. The defrost mode is actuated to remove frost from an outdoor evaporator that may accumulate during cold weather operation. An algorithm for operation of the defrost mode is developed experimentally by seeking to maximize the heat transfer provided by the refrigerant. A heating system condition is experimentally related to the heat transfer capacity. One then maximizes the average heat transfer capacity to determine the optimum initiation point for the defrost mode. Further, protections are included into the defrost mode. When the heat pump is utilized to heat hot water, methods are provided to prevent the water that remains in the heat exchanger from becoming unduly heated. In one method, the water pump may be periodically operated to move the water. In a second method, a control ensures the discharge pressure of the refrigerant leaving the compressor is reduced, and that the water pump is not stopped until that reduced temperature falls below a predetermined maximum. The temperature reduction is achieved through a dual control loop wherein a temperature that is too high results in a new desired discharge pressure. The control achieves the new desired pressure by controlling the expansion device. In another protection feature, as a control determines that the defrost mode is nearing its end, an evaporator fan is run to remove melted water from the evaporator coils, and also to ensure the refrigerant leaving the evaporator does not reach unduly high pressure or temperatures.

    摘要翻译: 具有改进的除霜模式的热泵,特别是用于加热热水源的热泵。 启动除霜模式以从室外蒸发器中除霜,这可能会在寒冷天气下运行时积聚。 通过试图使制冷剂提供的热传递最大化,实验地开发了除霜模式的操作算法。 加热系统条件实验上与传热能力有关。 然后将平均传热能力最大化,以确定除霜模式的最佳起始点。 此外,保护被包括在除霜模式中。 当使用热泵来加热热水时,提供了防止热交换器中残留的水变得过度加热的方法。 在一种方法中,水泵可以周期性地操作以移动水。 在第二种方法中,控制器确保离开压缩机的制冷剂的排放压力降低,并且水泵不停止,直到降低的温度降到预定的最大值以下。 通过双重控制回路实现温度降低,其中太高的温度导致新的期望排出压力。 该控制通过控制膨胀装置实现新的期望压力。 在另一个保护特征中,当控制器确定除霜模式接近其结束时,运行蒸发器风扇以从蒸发器盘管去除熔化的水,并且还确保离开蒸发器的制冷剂不会达到过高的压力或温度。

    Transcritical vapor compression optimization through maximization of heating capacity
    10.
    发明授权
    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:US07051542B2

    公开(公告)日:2006-05-30

    申请号:US10738657

    申请日:2003-12-17

    IPC分类号: F25B13/00 F25B41/04 F25D17/00

    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。