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1. 发明授权

US06864659B2 Variable speed controller for air moving applications using an AC induction motor 失效
标题翻译：使用交流感应电机的空气移动应用的变速控制器
公开(公告)号：US06864659B2
公开(公告)日：2005-03-08
申请号：US10191975
申请日：2002-07-09
申请人： James W. Ratz , Paul E. Sigafus , Larry L. Lutton , Nickolas G. Vrionis
发明人： James W. Ratz , Paul E. Sigafus , Larry L. Lutton , Nickolas G. Vrionis
IPC分类号： F23N1/06 , F23N3/08 , H02P1/42 , H02P1/44 , H02P25/04 , H02P5/28 , H02P7/36
CPC分类号： F23N1/062 , F23N3/082 , F23N2033/08 , H02P1/423 , H02P1/44 , H02P25/04
摘要： An HVAC system has at least one variable speed controller for an AC induction motor, especially of the Permanent Split Capacitor (PSC) type. The variable speed controller provides switched power via a modulating triac to the main coils of the motor and constant power via an on/off triac to the auxiliary coils during operation. A large value capacitor is placed in line with the auxiliary coils to reduce power consumption and current draw over that of known systems. Power to the motor can be turned off to provide for motor speed sensing through monitoring the frequency of a generated voltage when the power is turned off. Frequency-based motor speed sensing is accomplished by shutting off all current to the motor and measuring zero crossings on the generated voltage of the decaying magnetic field. The controller can be easily retrofitted onto existing motors. An optional controller bypass is provided to run the motor at rated speed in case of controller failure.
摘要翻译： HVAC系统具有用于AC感应电动机的至少一个变速控制器，特别是永久分流电容器（PSC）型。可变速度控制器通过调制三端双向可控硅开关，通过在运行期间通过开/关三端双向可控硅开关向辅助线圈提供电动机的主线圈和恒定功率。一个大值的电容放置在与辅助线圈一致的位置上，以降低功耗并消耗已知系统的电流。关闭电机的电源可以关闭，通过监控电源关闭时产生的电压的频率来提供电机速度检测。基于频率的电动机速度检测是通过关闭电动机的所有电流并测量衰减磁场的产生电压上的过零点来实现的。控制器可以轻松地改装到现有的电机上。提供可选的控制器旁路以在控制器故障的情况下以额定速度运行电机。

2. 发明授权

US06866202B2 Variable output heating and cooling control 失效
标题翻译：可变输出加热和冷却控制
公开(公告)号：US06866202B2
公开(公告)日：2005-03-15
申请号：US10236678
申请日：2002-09-06
申请人： Paul E. Sigafus , Ralph H. Torborg , James W. Ratz , Larry L. Lutton
发明人： Paul E. Sigafus , Ralph H. Torborg , James W. Ratz , Larry L. Lutton
IPC分类号： F23N1/00 , F23N5/20 , F23N5/00
CPC分类号： F23N1/002 , F23N5/203 , F23N2025/12 , F23N2027/10 , F23N2033/04 , F23N2033/08 , F23N2035/16 , F23N2037/10
摘要： A heating or cooling system, such as an HVAC system, of variable output has a number of control elements and may include a variable speed compressor, a variable speed combustion (induced or forced draft) blower motor; a variable speed circulator blower motor; a variable output gas valve or gas/air premix unit; and a controller specifically developed for variable output applications. The system may utilize a pressure sensor to determine the actual flow of combustion airflow in response to actual space conditions, vary the speed of the inducer blower, and subsequently vary the gas valve output to supply the correct amount of gas to the burner system. A temperature sensor may be located in the discharge air stream of the conditioned air to provide an input signal for the circulator blower.
摘要翻译：可变输出的诸如HVAC系统的加热或冷却系统具有多个控制元件，并且可以包括变速压缩机，变速燃烧（诱导或强制通风）鼓风机电机; 变速循环式鼓风机电机; 可变输出气体阀或气/空气预混单元; 和专为可变输出应用开发的控制器。系统可以利用压力传感器来响应于实际空间条件来确定燃烧气流的实际流量，改变诱导鼓风机的速度，随后改变燃气阀输出以向燃烧器系统供应正确量的气体。温度传感器可以位于调节空气的排出空气流中，以提供循环鼓风机的输入信号。

3. 发明授权

US07293718B2 Variable output heating and cooling control 失效
标题翻译：可变输出加热和冷却控制
公开(公告)号：US07293718B2
公开(公告)日：2007-11-13
申请号：US11080773
申请日：2005-03-15
申请人： Paul E. Sigafus , Ralph H. Torborg , James W. Ratz , Larry L. Lutton
发明人： Paul E. Sigafus , Ralph H. Torborg , James W. Ratz , Larry L. Lutton
IPC分类号： F24H9/20
CPC分类号： F23N1/002 , F23N5/203 , F23N2025/12 , F23N2027/10 , F23N2033/04 , F23N2033/08 , F23N2035/16 , F23N2037/10
摘要： A heating or cooling system, such as an HVAC system, of variable output has a number of control elements and may include a variable speed compressor, a variable speed combustion (induced or forced draft) blower motor; a variable speed circulator blower motor; a variable output gas valve or gas/air premix unit; and a controller specifically developed for variable output applications. The system may utilize a pressure sensor to determine the actual flow of combustion airflow in response to actual space conditions, vary the speed of the inducer blower, and subsequently vary the gas valve output to supply the correct amount of gas to the burner system. A temperature sensor may be located in the discharge air stream of the conditioned air to provide an input signal for the circulator blower.
摘要翻译：可变输出的诸如HVAC系统的加热或冷却系统具有多个控制元件，并且可以包括变速压缩机，变速燃烧（诱导或强制通风）鼓风机电机; 变速循环式鼓风机电机; 可变输出气体阀或气/空气预混单元; 和专为可变输出应用开发的控制器。系统可以利用压力传感器来响应于实际空间条件来确定燃烧气流的实际流量，改变诱导鼓风机的速度，随后改变燃气阀输出以向燃烧器系统供应正确量的气体。温度传感器可以位于调节空气的排出空气流中，以提供循环鼓风机的输入信号。

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