Compressor with flooded start control

    公开(公告)号:US11067074B2

    公开(公告)日:2021-07-20

    申请号:US16670709

    申请日:2019-10-31

    Inventor: Hung M. Pham

    Abstract: A system includes a compressor and a controller. The controller operates the compressor in a flooded-start control mode. The flooded start control mode includes operating the compressor according to at least one cycle including a first time period during which the compressor is on, followed by a second time period during which the compressor is off. The controller determines at least one of the first time period, the second time period, and a number of cycles for the flooded-start control mode. At least one of the first time period, the second time period, and the number of cycles is based on received asset data corresponding to at least one of a type and a characteristic of at least one component of the refrigeration system. The controller operates the compressor in the flooded-start control mode after determining the first time period, the second time period, and the number of cycles.

    COMPRESSOR DIAGNOSTIC AND PROTECTION SYSTEM AND METHOD
    3.
    发明申请
    COMPRESSOR DIAGNOSTIC AND PROTECTION SYSTEM AND METHOD 审中-公开
    压缩机诊断与保护系统及方法

    公开(公告)号:US20150367463A1

    公开(公告)日:2015-12-24

    申请号:US14841058

    申请日:2015-08-31

    Inventor: Hung M. Pham

    Abstract: A method is provided that includes installing a compressor in a refrigeration system and determining a condenser temperature difference using processing circuitry. The method also includes checking for an overcharge condition or a condenser fan blockage condition when the condenser temperature difference is greater than a high condenser temperature difference value. The method also includes determining a discharge superheat temperature using the processing circuitry and checking for the overcharge condition or the condenser fan blockage condition when the condenser temperature difference is less than the high condenser temperature difference value and the discharge superheat temperature is less than a low discharge superheat temperature value. The method also includes checking for an undercharge condition or an evaporator fan blockage condition when the condenser temperature difference is less than the high condenser temperature difference value and the discharge superheat temperature is greater than a high discharge superheat temperature value. The method also includes completing installation of the compressor when the condenser temperature difference is between the high condenser temperature difference value and the low condenser temperature difference value and the discharge superheat is between the high discharge superheat temperature value and the low discharge superheat temperature value.

    Abstract translation: 提供了一种方法,其包括将压缩机安装在制冷系统中并且使用处理电路确定冷凝器的温差。 该方法还包括当冷凝器温度差大于高冷凝器温度差值时,检查过充电状况或冷凝器风扇堵塞状况。 该方法还包括使用处理电路确定放电过热温度,并且当冷凝器温度差小于高冷凝器温度差值并且放电过热温度低于低放电时,检查过充电条件或冷凝器风扇阻塞状况 过热温度值。 该方法还包括当冷凝器温度差小于高冷凝器温度差值和放电过热温度大于高放电过热温度值时,检查欠充电状况或蒸发器风扇阻塞状况。 该方法还包括当冷凝器温差在高冷凝器温度差值和低冷凝器温度差值之间并且排放过热处于高排放过热温度值和低排放过热温度值之间时完成压缩机的安装。

    Compressor with flooded start control
    4.
    发明授权
    Compressor with flooded start control 有权
    压缩机与淹没启动控制

    公开(公告)号:US09194393B2

    公开(公告)日:2015-11-24

    申请号:US14250704

    申请日:2014-04-11

    Inventor: Hung M. Pham

    Abstract: A system and method for flooded start control of a compressor for a refrigeration system is provided. A temperature sensor generates temperature data corresponding to at least one of a compressor temperature and an ambient temperature. A control module receives the temperature data, determines an off-time period since the compressor was last on, determines an amount of liquid present in the compressor based on the temperature data and the off-time period, compares the amount of liquid with a predetermined threshold, and, when the amount of liquid is greater than the predetermined threshold, operates the compressor according to at least one cycle including a first time period during which the compressor is on and a second time period during which the compressor is off.

    Abstract translation: 提供了一种用于制冷系统的压缩机的淹没启动控制的系统和方法。 温度传感器产生对应于压缩机温度和环境温度中的至少一个的温度数据。 控制模块接收温度数据,确定自压缩机最后一次起的关闭时间段,基于温度数据和关闭时间段确定压缩机中存在的液体量,将液体的量与预定的 并且当所述液体的量大于所述预定阈值时,根据至少一个循环来操作所述压缩机,所述至少一个循环包括所述压缩机打开的第一时间段和所述压缩机关闭的第二时间段。

    COMPRESSOR DIAGNOSTIC AND PROTECTION SYSTEM AND METHOD
    5.
    发明申请
    COMPRESSOR DIAGNOSTIC AND PROTECTION SYSTEM AND METHOD 审中-公开
    压缩机诊断与保护系统及方法

    公开(公告)号:US20130294933A1

    公开(公告)日:2013-11-07

    申请号:US13932611

    申请日:2013-07-01

    Inventor: Hung M. Pham

    Abstract: A system is provided and may include a compressor operable in a refrigeration circuit. A first sensor may detect high-side data indicative of an operating condition of a high-pressure side of the refrigeration circuit and a second sensor may detect low-side data indicative of an operating condition of a low-pressure side of the refrigeration circuit. Processing circuitry may receive the high-side data and the low-side data from the first and second sensors and may process the high-side data and low-side data to determine at least one of a low-side fault and a high-side fault. The processing circuitry may operate the compressor in a normal mode in the absence of a low-side fault and a high-side fault and may operate the compressor in a reduced-capacity mode or a shutdown mode based on a severity of the at least one of the low-side fault and the high-side fault.

    Abstract translation: 提供一种系统,并且可以包括可在制冷回路中操作的压缩机。 第一传感器可以检测表示制冷回路的高压侧的运行状态的高侧数据,第二传感器可以检测表示制冷回路的低压侧的运转状况的低侧数据。 处理电路可以从第一和第二传感器接收高侧数据和低侧数据,并且可以处理高侧数据和低侧数据以确定低侧故障和高侧故障中的至少一个 故障。 处理电路可以在没有低侧​​故障和高侧故障的情况下以正常模式操作压缩机,并且可以基于至少一个的严重性来将压缩机操作在容量降低模式或关闭模式 的低端故障和高端故障。

    System and method of controlling a variable-capacity compressor

    公开(公告)号:US10132543B2

    公开(公告)日:2018-11-20

    申请号:US15651942

    申请日:2017-07-17

    Abstract: A climate-control system includes a variable-capacity compressor unit operable in a first capacity mode and in a second capacity mode that is higher than the first capacity mode and a control module configured to (i) switch the variable-capacity compressor unit between the first capacity mode and the second capacity mode based on a demand signal, a current outdoor air temperature, and an outdoor-air-temperature slope, (ii) select a region based on a first comparison of at least one outdoor-air-temperature value with a predetermined outdoor-air-temperature range and a second comparison of at least one outdoor-relative-humidity value with a predetermined outdoor-relative-humidity range, and (iii) set at least one system operating parameter based on the selected region, the at least one system operating parameter including at least one of a high-capacity runtime of the variable-capacity compressor unit, a low-capacity runtime of the variable-capacity compressor unit, and a fan speed.

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