公开(公告)号：US06662578B2

公开(公告)日：2003-12-16

申请号：US10306078

申请日：2002-11-27

申请人： Hung M. Pham ,  Abtar Singh ,  Jean-Luc M. Caillat ,  Mark Bass

发明人： Hung M. Pham ,  Abtar Singh ,  Jean-Luc M. Caillat ,  Mark Bass

IPC分类号： F25B4702

CPC分类号： G05D23/1909 ,  A47F3/04 ,  F04C18/0215 ,  F04C23/008 ,  F04C27/005 ,  F04C28/00 ,  F04C28/02 ,  F04C28/06 ,  F04C28/08 ,  F04C28/22 ,  F04C28/265 ,  F04C28/28 ,  F04C2270/015 ,  F04C2270/86 ,  F25B1/04 ,  F25B5/02 ,  F25B41/043 ,  F25B41/062 ,  F25B49/005 ,  F25B49/022 ,  F25B2341/0653 ,  F25B2400/22 ,  F25B2600/0261 ,  F25B2700/193 ,  F25B2700/1933 ,  F25B2700/2106 ,  F25B2700/2117 ,  F25B2700/21174 ,  F25B2700/21175 ,  Y02B30/72

摘要： A refrigeration system and method for controlling defrost includes a refrigeration case, an evaporator disposed in the refrigeration case, and a condenser and compressor coupled in fluid communication with the evaporator. The condenser is disposed on the refrigeration case and the compressor is a pulse width modulated variable capacity compressor. The system also includes a controller responsive to a load sensor disposed in the refrigeration case and is coupled to the compressor for providing a variable duty cycle control signal to the compressor, wherein the compressor is modulated between a first capacity and a second capacity while operating to adjust the operating capacity of the refrigeration system. The system further includes a module for periodically defrosting the refrigeration system as a function of duty cycle.

摘要翻译： 用于控制除霜的制冷系统和方法包括制冷箱，设置在制冷箱中的蒸发器和与蒸发器流体连通的冷凝器和压缩机。 冷凝器设置在制冷箱上，压缩机是脉宽调制可变容量压缩机。 该系统还包括响应于设置在制冷箱中的负载传感器的控制器，并且耦合到压缩机以向压缩机提供可变占空比控制信号，其中压缩机在第一容量和第二容量之间进行调制，同时操作至 调整制冷系统的运行能力。 该系统还包括用于根据占空比周期性地将制冷系统除霜的模块。

公开(公告)号：US06601397B2

公开(公告)日：2003-08-05

申请号：US09811092

申请日：2001-03-16

申请人： Hung M. Pham ,  Richard P. Vogh, III ,  Nagaraj Jayanth

发明人： Hung M. Pham ,  Richard P. Vogh, III ,  Nagaraj Jayanth

IPC分类号： F25D1700

CPC分类号： F04C28/18 ,  F04C18/0215 ,  F04C23/008 ,  F04C27/005 ,  F04C28/265 ,  F04C28/28 ,  F04C29/04 ,  F04C29/042 ,  F25B1/04 ,  F25B5/02 ,  F25B49/022 ,  F25B2400/075 ,  F25B2400/13 ,  F25B2400/22 ,  F25B2400/23 ,  F25B2600/026 ,  F25B2600/111 ,  F25B2700/1933 ,  F25B2700/21152 ,  F25B2700/2117 ,  Y02B30/743

摘要： A cooling system controller controls the capacity of a variable capacity compressor based upon the temperature of a housing being cooled, the suction pressure of the compressor or both of these criteria. The cooling system controller is capable of controlling either single-evaporator or multiple-evaporator refrigeration systems. The multiple-evaporator systems can have evaporators of similar temperatures or of mixed temperatures. The controller also allows the use of one or more condenser fans that are operated in a lead/lag fashion to control the cooling capability of the system.

公开(公告)号：US06412293B1

公开(公告)日：2002-07-02

申请号：US09686561

申请日：2000-10-11

申请人： Hung M. Pham ,  Jean-Luc Caillat

发明人： Hung M. Pham ,  Jean-Luc Caillat

IPC分类号： F25B4900

CPC分类号： F25B49/022 ,  F04C14/18 ,  F04C18/0215 ,  F04C23/008 ,  F04C28/14 ,  F04C2270/01 ,  F04C2270/18 ,  F04C2270/19 ,  F04C2270/58 ,  F04C2270/90 ,  F25B1/04 ,  F25B1/047 ,  F25B2600/0262 ,  F25B2700/05

摘要： An improved continuous capacity modulation system for scroll-type compressors is disclosed in which a valve body of a solenoid valve assembly is secured to the inner wall of the hermetic shell and the actuating coil is mounted on the outer surface thereof. The actuating coil includes a plunger/valve member which cooperates with passages provided in the valve body to selectively actuate the capacity modulation arrangement utilizing compressed fluid. The construction offers the advantage that all fluid pressure lines are located within the hermetic shell and thus protected from potential damage, the solenoid coil may be easily changed/replaced to accommodate different available operating voltages and/or malfunction thereof and the system can be easily tested prior to final welding of the outer shell. The actuating coil is controlled by Pulse Width Modulation to reduce the load demand of the compressor during times when load shedding is required.

摘要翻译： 公开了一种用于涡旋式压缩机的改进的连续容量调节系统，其中电磁阀组件的阀体固定到密封壳的内壁，并且致动线圈安装在其外表面上。 致动线圈包括柱塞/阀构件，该柱塞/阀构件与设置在阀体中的通道配合，以利用压缩流体选择性地致动容量调节装置。 该结构提供的优点是所有流体压力线都位于密封壳内，并且因此防止潜在的损坏，螺线管线圈可以容易地更换/更换以适应不同的可用工作电压和/或其故障，并且系统可以容易地测试 在外壳的最终焊接之前。 驱动线圈由脉冲宽度调制控制，以减少压缩机在需要减载时的负载需求。

公开(公告)号：US5802215A

公开(公告)日：1998-09-01

申请号：US767893

申请日：1996-12-17

申请人： Rosario A. Bracco ,  George L. Harer ,  Sue K. Lam ,  Louis D. Mailloux ,  Hoan N. Nguyen ,  Cheryl A. Pence ,  Hung M. Pham ,  Cathleen J. Raker ,  Farhad D. Rostamian ,  Robert R. Thompson, Jr. ,  Daniel D. Truong

发明人： Rosario A. Bracco ,  George L. Harer ,  Sue K. Lam ,  Louis D. Mailloux ,  Hoan N. Nguyen ,  Cheryl A. Pence ,  Hung M. Pham ,  Cathleen J. Raker ,  Farhad D. Rostamian ,  Robert R. Thompson, Jr. ,  Daniel D. Truong

IPC分类号： G03G15/047 ,  H04N1/403 ,  G06K9/44 ,  G03G15/00 ,  G03G21/00 ,  H04N1/387

CPC分类号： H04N1/403 ,  G03G15/047

摘要： A lead edge lightening circuit which will lighten a scan line based on a seven by seven pixel area surrounding the current pixel. The area is divided into four sub-areas, each of four by four pixels, and each having the current pixel at one corner. Each sub-area is summed and compared to a threshold number. If the threshold number is equalled or exceeded by at least one of the four sums, an overlay bit, which can be white or black, is output. The current pixel is replaced by a white pixel if a white pixel has been output, otherwise the current pixel remains unchanged.

摘要翻译： 一个引线边缘发光电路，其将基于当前像素周围的七乘七像素区域来减轻扫描线。 该区域被分成四个子区域，每个子区域分别是四个像素，并且每个子区域在一个角上具有当前像素。 将每个子区域相加并与阈值进行比较。 如果阈值数目等于或超过四个和中的至少一个，则输出可以是白色或黑色的覆盖位。 如果输出了白色像素，则当前像素被白色像素代替，否则当前像素保持不变。

公开(公告)号：US5111062A

公开(公告)日：1992-05-05

申请号：US751391

申请日：1991-08-28

申请人： Timothy M. Hunter ,  Hung M. Pham ,  John L. Zanghi

发明人： Timothy M. Hunter ,  Hung M. Pham ,  John L. Zanghi

IPC分类号： H04N1/113 ,  H04N1/053 ,  H04N1/12

CPC分类号： H04N1/053 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/0471 ,  H04N2201/04786

摘要： An apparatus and method of reducing pixel clock jitter in a raster scanner having a oscillator which generates a pixel clock signal and a start of scan sensor for generating a start of scan signal, includes the generation of an inverted pixel clock signal and an inverted start of scan signal. Based on which of the pixel clock signal or the inverted pixel clock signal has a rising edge closer to the start of scan signal, one of the pixel clock or inverted pixel clock signal is selected to replace the original pixel clock signal. Further selections are prevented from occurring until a subsequent start of scan signal is detected.

公开(公告)号：US08474278B2

公开(公告)日：2013-07-02

申请号：US13030549

申请日：2011-02-18

申请人： Hung M. Pham

发明人： Hung M. Pham

IPC分类号： F25B1/00

CPC分类号： B23P15/26 ,  F04C28/00 ,  F04C2270/18 ,  F04C2270/19 ,  F04C2270/80 ,  F25B1/04 ,  F25B49/005 ,  F25B2500/06 ,  F25B2500/19 ,  F25B2700/151 ,  F25B2700/1931 ,  F25B2700/1933 ,  F25B2700/2106 ,  F25B2700/21151 ,  F25B2700/21152 ,  F25B2700/2116 ,  F25D2400/36 ,  Y10T29/49353

摘要： A method is provided and may include generating a high-side signal indicative of an operating condition of a high-pressure side of a refrigeration circuit and generating a low-side signal indicative of an operating condition of a low-pressure side of the refrigeration circuit. The method may further include processing by a processor the high-side signal and the low-side signal to determine a non-measured system condition and determining by the processor an efficiency of the refrigeration circuit based on the non-measured system condition.

摘要翻译： 提供了一种方法，并且可以包括产生表示制冷回路的高压侧的运行状态的高侧信号，并产生表示制冷回路的低压侧的运转状态的低侧信号 。 该方法还可以包括由处理器处理高侧信号和低侧信号以确定未测量的系统状况，并且由处理器根据未测量的系统状况来确定制冷回路的效率。

公开(公告)号：US08418483B2

公开(公告)日：2013-04-16

申请号：US12246927

申请日：2008-10-07

申请人： Daniel L. McSweeney ,  Stephen M. Seibel ,  Hung M. Pham

发明人： Daniel L. McSweeney ,  Stephen M. Seibel ,  Hung M. Pham

IPC分类号： F25B49/00

CPC分类号： F25B49/02 ,  F25B49/022 ,  F25B2500/19 ,  F25B2600/021 ,  F25B2700/2117 ,  Y02B30/741

摘要： A system and method for calculating parameters for a refrigeration system having a variable speed compressor is provided. A compressor is connected to a condenser and an evaporator. An evaporator sensor outputs an evaporator signal corresponding to at least one of an evaporator pressure and an evaporator temperature. An inverter drive modulates electric power delivered to the compressor to modulate a speed of the compressor. The control module is connected to the inverter drive and receives the evaporator signal, monitors electrical power data and compressor speed data from the inverter drive, and calculates at least one of a condenser temperature and a condenser pressure based on the evaporator signal, the electrical power data, and the compressor speed data.

摘要翻译： 提供了一种用于计算具有变速压缩机的制冷系统的参数的系统和方法。 压缩机连接到冷凝器和蒸发器。 蒸发器传感器输出对应于蒸发器压力和蒸发器温度中的至少一个的蒸发器信号。 逆变器驱动器调制输送到压缩机的电力来调节压缩机的速度。 控制模块连接到变频器驱动器并接收蒸发器信号，监视来自变频器驱动器的电力数据和压缩机速度数据，并基于蒸发器信号计算冷凝器温度和冷凝器压力中的至少一个，电功率 数据和压缩机速度数据。

公开(公告)号：US08346507B2

公开(公告)日：2013-01-01

申请号：US13079320

申请日：2011-04-04

申请人： Prakash B. Shahi ,  Eric J. Wildi ,  Mark E. Carrier ,  Randy L. Bomkamp ,  Hung M. Pham ,  William P. Butler

发明人： Prakash B. Shahi ,  Eric J. Wildi ,  Mark E. Carrier ,  Randy L. Bomkamp ,  Hung M. Pham ,  William P. Butler

IPC分类号： G06F11/30 ,  G21C17/00

CPC分类号： F25B49/005 ,  F25B49/025 ,  F25B2500/04 ,  F25B2700/151

摘要： Systems and methods for detecting various system conditions in a fluid delivery system (such as an HVAC system) based on a motor parameter are disclosed. Embodiments of the present invention relate to detecting: filter condition, frozen coil condition, register condition, energy efficiency, system failure, or any combination thereof. Embodiments of the present invention relate to detecting fluid delivery system conditions based on motor parameters including system current, system power, system efficiency, motor current, motor power, motor efficiency, and/or a change (or rate of change) in motor parameters. Techniques for responding to a clogged filter and a frozen coil are also disclosed. Also disclosed are techniques for characterizing a fluid delivery system off-site, prior to system installation.

摘要翻译： 公开了一种用于基于电动机参数来检测流体输送系统（例如HVAC系统）中的各种系统状况的系统和方法。 本发明的实施例涉及检测：过滤条件，冻结线圈条件，注册条件，能量效率，系统故障或其任何组合。 本发明的实施例涉及基于包括系统电流，系统功率，系统效率，电动机电流，电动机功率，电动机效率和/或电动机参数的变化（或变化率）的电动机参数来检测流体输送系统状况。 还公开了用于响应堵塞的过滤器和冷冻卷材的技术。 还公开了在系统安装之前用于表征异地流体输送系统的技术。

公开(公告)号：US08020402B2

公开(公告)日：2011-09-20

申请号：US11930889

申请日：2007-10-31

申请人： Hung M. Pham ,  Jean-Luc M. Caillat ,  Ronald L. Van Hoose

发明人： Hung M. Pham ,  Jean-Luc M. Caillat ,  Ronald L. Van Hoose

IPC分类号： F25B13/00

CPC分类号： F04C29/042 ,  F25B1/10 ,  F25B13/00 ,  F25B43/006 ,  F25B47/025 ,  F25B2313/02741 ,  F25B2400/02 ,  F25B2400/13 ,  F25B2400/16 ,  F25B2400/23 ,  F25B2500/01 ,  F25B2600/2519

摘要： A heat pump system of the type which re-circulates refrigerant through a fluid circuit between a first heat exchanger and a second heat exchanger includes a compressor coupled to the fluid circuit and a vapor injection system including a vessel fluidly coupled to the first and second heat exchangers and to a vapor injection port of the compressor. The vessel is operable as a receiver in a cooling mode of the heat pump system and is operable as a flash tank in a heating mode of the heat pump system.

摘要翻译： 在第一热交换器和第二热交换器之间通过流体回路再循环制冷剂的热泵系统包括耦合到流体回路的压缩机和包括流体耦合到第一和第二热量的容器的蒸气喷射系统 交换器和压缩机的蒸气喷射端口。 该容器可在热泵系统的冷却模式中作为接收器操作，并且可以作为热泵系统的加热模式中的闪蒸罐操作。

公开(公告)号：US20110144944A1

公开(公告)日：2011-06-16

申请号：US13030549

申请日：2011-02-18

申请人： Hung M. Pham

发明人： Hung M. Pham

IPC分类号： G06F19/00

CPC分类号： B23P15/26 ,  F04C28/00 ,  F04C2270/18 ,  F04C2270/19 ,  F04C2270/80 ,  F25B1/04 ,  F25B49/005 ,  F25B2500/06 ,  F25B2500/19 ,  F25B2700/151 ,  F25B2700/1931 ,  F25B2700/1933 ,  F25B2700/2106 ,  F25B2700/21151 ,  F25B2700/21152 ,  F25B2700/2116 ,  F25D2400/36 ,  Y10T29/49353

摘要： A method is provided and may include generating a high-side signal indicative of an operating condition of a high-pressure side of a refrigeration circuit and generating a low-side signal indicative of an operating condition of a low-pressure side of the refrigeration circuit. The method may further include processing by a processor the high-side signal and the low-side signal to determine a non-measured system condition and determining by the processor an efficiency of the refrigeration circuit based on the non-measured system condition.

摘要翻译： 提供了一种方法，并且可以包括产生表示制冷回路的高压侧的运行状态的高侧信号，并产生表示制冷回路的低压侧的运转状态的低侧信号 。 该方法还可以包括由处理器处理高侧信号和低侧信号以确定未测量的系统状况，并且由处理器根据未测量的系统状况来确定制冷回路的效率。