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公开(公告)号：US5572104A
公开(公告)日：1996-11-05
申请号：US495134
申请日：1995-06-27
CPC分类号： F23N5/203 , F23N2023/08 , F23N2027/16 , F23N2031/20 , F23N2033/02 , F23N2033/08 , Y10S388/934
摘要： An electric control for gas furnaces which controls a two speed main blower fan and an induction draft fan based on inputs from a room thermostat, a high limit and an ignition control including a gas valve. The control has a circuit board having a power supply for providing 24 volts DC current source to drive DC relays and a 5 volt DC power source to power a microprocessor. 24 volt AC input signals are coupled to the input ports of the microprocessor through current limiting resistors and to AC ground through pull down resistors. AC ground is also connected to the IRQ port of the microprocessor. The output ports of the microprocessor are connected to a relay driver which in turn is connected to the relays. Several breakaway tabs in the board provide optional features such as eliminating a normally provided draft delay timing function. Test pads are provided on the board so that the board can be tested during manufacture. An optional feature is shown comprising an LED which can be used to indicate the status of the system. Another optional feature incorporates a zener diode and resistor coupled to each input port to increase input thresholds. This feature is provided for use with power stealing electronic thermostats.The control calibrates itself on a continuing periodic basis to read the AC inputs synchronously at the peak of their wave and switches the relays asynchronously based on the real time clock of the microprocessor.
摘要翻译： 基于来自房间恒温器，上限和包括气阀的点火控制器的输入，控制二速主鼓风机和吸风通风机的气体炉的电控制。 该控制器具有电路板，该电路板具有用于提供24伏直流电流源以驱动直流继电器的电源和5伏直流电源来为微处理器供电。 24伏交流输入信号通过限流电阻耦合到微处理器的输入端口，并通过下拉电阻耦合到交流接地。 交流接地也连接到微处理器的IRQ端口。 微处理器的输出端口连接到继电器驱动器，继电器驱动器又连接到继电器。 板上的几个分离标签提供了可选的功能，例如消除正常提供的草稿延迟定时功能。 在板上提供测试垫，以便板可以在制造过程中进行测试。 示出了包括可用于指示系统的状态的LED的可选特征。 另一个可选功能包括耦合到每个输入端口的齐纳二极管和电阻器，以增加输入阈值。 此功能提供用于窃电电子恒温器。 该控制器在持续的周期性基础上自行校准，以在其波峰值同步读取交流输入，并基于微处理器的实时时钟异步地切换继电器。
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公开(公告)号：US5272427A
公开(公告)日：1993-12-21
申请号：US886275
申请日：1992-05-20
CPC分类号： F23N5/203 , F23N2023/08 , F23N2027/16 , F23N2031/20 , F23N2033/02 , F23N2033/08 , Y10S388/934
摘要： An electric control for gas furnaces which controls a two speed main blower fan and an induction draft fan based on inputs from a room thermostat, a high limit and an ignition control including a gas valve. The control has a circuit board having a power supply for providing 24 volts DC current source to drive DC relays and a 5 volt DC power source to power a microprocessor. 24 volt AC input signals are coupled to the input ports of the microprocessor through current limiting resistors and to AC ground through pull down resistors. AC ground is also connected to the IRQ port of the microprocessor. The output ports of the microprocessor are connected to a relay driver which in turn is connected to the relays. Several breakaway tabs in the board provide optional features such as eliminating a normally provided draft delay timing function. Test pads are provided on the board so that the board can be tested during manufacture. An optional feature is shown comprising an LED which can be used to indicate the status of the system. Another optional feature incorporates a zener diode and resistor coupled to each input port to increase input thresholds. This feature is provided for use with power stealing electronic thermostats.The control calibrates itself on a continuing periodic basis to read the AC inputs synchronously at the peak of their wave and switches the relays asynchronously based on the real time clock of the microprocessor.
摘要翻译： 基于来自房间恒温器，上限和包括气阀的点火控制器的输入，控制二速主鼓风机和吸风通风机的气体炉的电控制。 该控制器具有电路板，该电路板具有用于提供24伏直流电流源以驱动直流继电器的电源和5伏直流电源来为微处理器供电。 24伏交流输入信号通过限流电阻耦合到微处理器的输入端口，并通过下拉电阻耦合到交流接地。 交流接地也连接到微处理器的IRQ端口。 微处理器的输出端口连接到继电器驱动器，继电器驱动器又连接到继电器。 板上的几个分离标签提供了可选的功能，例如消除正常提供的草稿延迟定时功能。 在板上提供测试垫，以便板可以在制造过程中进行测试。 示出了包括可用于指示系统的状态的LED的可选特征。 另一个可选功能包括耦合到每个输入端口的齐纳二极管和电阻器，以增加输入阈值。 此功能提供用于窃电电子恒温器。 该控制器在持续的周期性基础上自行校准，以在其波峰值同步读取交流输入，并基于微处理器的实时时钟异步地切换继电器。
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公开(公告)号：US5530615A
公开(公告)日：1996-06-25
申请号：US163782
申请日：1993-12-06
CPC分类号： H01H9/56 , H01H2009/566 , Y10T307/951
摘要： An electronic control for gas furnaces controls a two speed main blower fan and an induction draft fan based on 24 volt input signals from a room thermostat, a high limit and an ignition control including a gas valve. The input signals are coupled to input ports of a microprocessor through current limiting resistors and to AC ground through pull down resistors. AC ground is also connected to the IRQ port of the microprocessor. Output ports of the microprocessor are connected to a relay driver which in turn is connected to relays for energizing and de-energizing the fans. The control calibrates itself on a continuing periodic basis to read the AC inputs synchronously at the peak of their wave and can switch the relays asynchronously based on the Real Time Clock of the microprocessor or can be switched synchronously by providing a selected delay so that contact engagement and disengagement occurs at or near the zero crossing of the AC line voltage wave form. When used with resistive loads the relays are switch in response to a signal from the microprocessor which is delayed based on the mechanical switching time constant of the relays to provide contact closure and opening at the selected point on the AC line voltage wave form. An alternate embodiment shows a feedback network used to calibrate the specific delay period for each relay upon initialization. When used with inductive loads contact closing can be effected synchronously and contact opening asynchronously.
摘要翻译： 燃气炉的电子控制器基于来自室温恒温器，上限和包括气阀的点火控制器的24伏输入信号来控制双速主鼓风机和引风机。 输入信号通过限流电阻耦合到微处理器的输入端口，并通过下拉电阻耦合到交流电源。 交流接地也连接到微处理器的IRQ端口。 微处理器的输出端口连接到继电器驱动器，继电器驱动器又连接到继电器，以使风扇通电和断电。 控制器在持续的周期性基础上自行校准，以在其波峰值同步读取AC输入，并且可以基于微处理器的实时时钟异步地切换继电器，或者可以通过提供所选择的延迟来同步地切换继电器，使得接触接合 并且在AC线电压波形的过零点处或附近发生分离。 当与电阻性负载一起使用时，继电器响应于来自微处理器的信号而被切换，该信号基于继电器的机械开关时间常数被延迟，以在交流线路电压波形上的选定点处提供触点闭合和断开。 替代实施例示出了用于在初始化时校准每个继电器的特定延迟周期的反馈网络。 当与感性负载一起使用时，触点闭合可以同步进行并且异步接触。
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4.发明授权Interface circuit having improved isolation among signals for use with a variable speed electrically commutated fan motor 失效接口电路具有改进的与可变速电气换向风扇电机一起使用的信号之间的隔离
公开(公告)号：US5397970A
公开(公告)日：1995-03-14
申请号：US873093
申请日：1992-04-24
CPC分类号： F24F11/0009 , H02P6/34 , F24F11/0079 , Y02B30/746
摘要： A low voltage terminal board interfaces a fan motor with a field thermostat. The board includes a power supply providing a 24 volt DC power source for driving an electronic air cleaner relay and fan motor control lines and a 5 volt DC power source for providing optical isolation and timing logic. Several heater stage signals are connected to a diode interlock network so that no matter which signal is generated the first electric stage heater is energized. A first optically coupled isolator receives a 240 volt AC input whenever the first stage electric heater is energized with the isolator output controlling energization of a heat or medium speed operation of the fan motor. Second and third optically coupled isolators receive a 24 volt AC input indicative of continuous fan operation and compressor operation respectively with the outputs controlling energization of low (on/off) fan speed operation and high speed fan operation respectively. A timing circuit is interconnected between the third optically coupled isolator and the high speed fan terminal to provide a delayed off period of fan operation. Diode interconnections ensure that the on/off terminal is energized anytime the high speed terminal or the first stage electric heater is energized and anytime the on/off line is energized the electronic air cleaner relay is energized.
摘要翻译： 低压端子板将风扇电机与现场温控器接口。 该电路板包括一个电源，提供24伏直流电源，用于驱动电子空气滤清器继电器和风扇电机控制线，以及一个5伏直流电源，用于提供光隔离和定时逻辑。 几个加热器级信号连接到二极管互锁网络，使得无论哪个信号被产生，第一电级加热器通电。 每当第一级电加热器通过隔离器输出通电以控制风扇马达的热或中速运行的通电时，第一光耦合隔离器接收240伏交流输入。 第二和第三光耦合隔离器分别接收指示连续风扇运行和压缩机运行的24伏交流输入，输出分别控制低（开/关）风扇转速运行和高速风扇运行的通电。 定时电路在第三光耦合隔离器和高速风扇端子之间互连，以提供风扇运行的延迟关闭周期。 二极管互连确保在高速端子或第一级电加热器通电的任何时候开/关端子都通电，并且任何时候通/断电源使电子空气滤清器继电器通电。
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5.发明授权公开(公告)号：US06450409B1
公开(公告)日：2002-09-17
申请号：US09714029
申请日：2000-11-15
IPC分类号： G05D2300
CPC分类号： G05D23/1912 , F24F11/30 , F24F2110/10
摘要： A control used in a two stage HVAC system has a power supply from a 24 VAC transformer which is full wave rectified (D1, D2, D3, D4) to create DC voltages for a microcontroller (U1) and relays (K1-K3). All of the control information needed for the two stage control system is sent to the control from a room thermostat (12) having first and second stage cooling signal terminals (Y1, Y2) over a single line by connecting a diode between the Y1, Y2 terminals creating separate microprocessor recognizable signals.
摘要翻译： 在两级HVAC系统中使用的控制器具有全波整流（D1，D2，D3，D4）的24 VAC变压器的电源，为单片机（U1）和继电器（K1-K3）创建直流电压。 两级控制系统所需的所有控制信息通过连接Y1，Y2之间的二极管，从单线的第一级和第二级制冷信号端子（Y1，Y2）的房间恒温器（12）发送到控制器 终端创建单独的微处理器可识别信号。
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公开(公告)号：US06220043B1
公开(公告)日：2001-04-24
申请号：US09326911
申请日：1999-06-07
IPC分类号： F25B4902
CPC分类号： F25B29/003 , F24F11/83 , F25B47/025
摘要： An integrated heat pump and electrical heat control (12) has thermostat signal inputs (O, W1, W2, G, Y) along with a defrost sensor input (DF_IN). The defrost sensor (22) is located in an outdoor unit (4) which also includes a compressor contactor (CC), condenser fan (16) and reversing valve (18) relays (K4, K3, K2) controlled by micro-controller (U1). The normally closed condenser fan relay (K3) is energized through the defrost sensor forming a hardware lock-out in which the defrost sensor contacts must be closed for relay (K3) to be actuated de-energizing the condenser fan. The compressor contactor (CC) is energized through a low pressure switch (24) and high pressure switch (26) forming another hardware interlock. The evaporator fan is energized by relay (K1) controlled by micro-controller (U1) and matched to the compressor for improved efficiency and comfort.
摘要翻译： 集成热泵和电热控制（12）具有恒温信号输入（O，W1，W2，G，Y）以及除霜传感器输入（DF_IN）。 除霜传感器（22）位于室外单元（4）中，该室外机组（4）还包括由微控制器控制的压缩机接触器（CC），冷凝器风扇（16）和换向阀（18）继电器（K4，K3，K2） U1）。 常闭冷凝器风扇继电器（K3）通过除霜传感器通电，形成硬化锁定，其中除霜传感器接触必须关闭，继电器（K3）被致动以使冷凝器风扇断电。 压缩机接触器（CC）通过低压开关（24）和高压开关（26）通电，形成另一个硬件互锁。 蒸发器风扇由微控制器（U1）控制的继电器（K1）通电，并与压缩机匹配，以提高效率和舒适度。
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公开(公告)号：US5034848A
公开(公告)日：1991-07-23
申请号：US451326
申请日：1989-12-19
IPC分类号： G01L9/00
CPC分类号： G01L9/0075
摘要： Differentially connected capacitive sensors are mechanically coupled with the flexible capacitor plate of one sensor coupled to the source of pressure to be measured, the flexible capacitor plate of the other sensor coupled to ambient pressure. In a second embodiment, inaccuracies due to forces on the flexible plate are minimized by providing a housing with a tapered inner wall, an O-ring and a support to apply a radial load to the sensor due to clamping action from the tapered housing against the O-ring to provide a seal for the pressure sensing chamber. In a further embodiment, the cost of fabrication of the pressure transducer is minimized by providing the housing as a one piece cup. The electronics are mounted on the exterior surface of the low pressure side of the ceramic capacitor pressure sensing element and sealed in thereat by potting with an epoxy. In addition, an electrical pin connector from the electronics and a vent to the low pressure surface of the movable plate are secured in the potting material and extend externally thereof. In a further embodiment, pressures applied to the movable diaphragm of the pressure sensing element by the gasket are eliminated by providing a ceramic capacitor having a movable diaphragm element having smaller length and width dimensions than the fixed capacitor substrate. The gasket is positioned around the movable diaphragm element and on the fixed capacitor plate with the housing being stepped to apply a force against the gasket but remain out of contact with the movable diaphragm element.
摘要翻译： 差分连接的电容式传感器与耦合到要测量的压力源的一个传感器的柔性电容器板机械耦合，另一个传感器的柔性电容器板耦合到环境压力。 在第二实施例中，由于通过提供具有锥形内壁，O形环和支撑件的壳体，由于由锥形壳体抵抗着的弹性元件的夹紧作用而向柔性板施加径向载荷，使得柔性板上的力的不准确性被最小化 O形圈，为压力传感室提供密封。 在另一个实施例中，通过将壳体设置为一体式杯来最小化压力传感器的制造成本。 电子器件安装在陶瓷电容器压力感测元件的低压侧的外表面上，并通过用环氧树脂灌封将其密封在其中。 此外，从电子设备的电针连接器和可移动板的通气口到低压表面固定在灌封材料中并在其外部延伸。 在另一实施例中，通过提供具有比固定电容器基板更小的长度和宽度尺寸的可移动隔膜元件的陶瓷电容器来消除通过垫圈施加到压力感测元件的可移动隔膜的压力。 垫圈围绕可动隔膜元件和固定电容器板定位，其中壳体被阶梯状地施加抵靠垫圈的力，但是保持与可动隔膜元件不接触。
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公开(公告)号：US5806440A
公开(公告)日：1998-09-15
申请号：US651009
申请日：1996-05-20
CPC分类号： F23N3/082 , F23N1/06 , F23N1/062 , F23N2023/08 , F23N2025/04 , F23N2033/04 , F23N2033/10 , F23N5/18
摘要： A gas fired furnace system (10) has a controller (14) controlling the supply of gas through a gas valve (12) and air for combustion by means of an induced air draft fan (28), ignition of the gas by means of ignitor (22), the delivery of heated air from a heat exchanger (20) by means of an air blower (34) in response to signals from a thermostat (42). A selected constant flow of air for combustion is provided by controlling the speed of the motor driving the induced motor fan (28) despite changes which may occur in back pressure. Induced draft fan motor parameters proportional to motor torque and motor speed are read on an ongoing basis and inputted to controller (14) which computes a desired voltage and compares that with referenced data stored in the controller memory and makes corrections to the speed of the induced draft fan motor to maintain the constant air flow. The motor speed and motor torque are also monitored to ensure that they are within selected limits indicative of safe operation and responsive to this input energization of a relay (KM1) is controlled to deenergize the gas valve and ignition.
摘要翻译： 一种燃气炉系统（10）具有控制器（14），其通过气阀（12）和通过引风通风扇（28）进行燃烧的空气的控制，通过点火器点燃气体 （22），响应于来自恒温器（42）的信号，借助于鼓风机（34）从热交换器（20）输送加热的空气。 通过控制驱动感应的电动机风扇（28）的电动机的速度来提供选择的用于燃烧的恒定气流，尽管在背压中可能发生变化。 与电动机转矩和电动机速度成比例的感应通风风扇电动机参数被持续读取并输入到计算期望电压的控制器（14），并将其与存储在控制器存储器中的参考数据进行比较，并对诱导的速度进行校正 风机电机保持恒定的气流。 还监控电机转速和电机转矩，以确保它们位于指定安全运行的选定范围内，并响应于继电器（KM1）的输入通电被控制以对燃气阀和点火进行灭弧。
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公开(公告)号：US5372427A
公开(公告)日：1994-12-13
申请号：US812232
申请日：1991-12-19
CPC分类号： G01K1/16
摘要： A low-cost, highly-responsive temperature sensor has a thermistor element surface-mounted in a circuit defined by an electrically-conducting layer of a three-layer circuit substrate to be in close thermal coupling to a metal base layer on an opposite side of the substrate. The base layer is adapted to be disposed in heat-collecting relation to a surface whose temperature is to be monitored. An intermediate layer of the substrate has a binder electrically insulating the thermistor from the metal base layer and has thermally-conducting particles dispersed in the binder to improve thermal coupling of the thermistor to the heat-collecting substrate base layer. The circuit defines terminal pads surface-mounting the thermistor element at one end of the substrate and defines interconnected terminal pads at an opposite end of the substrate which are connected to device lead wires in substantial thermal isolation from the thermistor element.
摘要翻译： 低成本，高响应的温度传感器具有表面安装在由三层电路基板的导电层限定的电路中的热敏电阻元件，以与第三层电路基板的相反侧上的金属基底层紧密地热耦合 底物。 基层适于与要监测温度的表面进行热收集关系。 基板的中间层具有将热敏电阻与金属基层电绝缘的粘合剂，并且具有分散在粘合剂中的导热颗粒以改善热敏电阻与集热基板基底层的热耦合。 该电路定义了在基板的一端表面安装热敏电阻元件的端子焊盘，并且在基板的相对端限定了互连的端子焊盘，其连接到与热敏电阻元件相当热隔离的器件引线。
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公开(公告)号：US5040417A
公开(公告)日：1991-08-20
申请号：US434288
申请日：1989-11-13
申请人： Mitchell R. Rowlette
发明人： Mitchell R. Rowlette
CPC分类号： G01N27/122 , G01K7/24
摘要： The disclosure relates to a system for measuring relative humidity and temperature wherein there are provided three controlled switching matrices, a first of the matrices determining whether a current for determining temperature or relative humidity is to be fed via a diode to a system voltage output from when the voltage output will be converted to an appropriate temperature or relative humidity reading. The remaining two matrices are each controlled by an oscillating voltage which alternates the output or input terminal thereof depending upon whether the oscillating voltage is positive or negative. This causes current to be passed through a humidity responsive resistor in opposite directions during each half cycle of the oscillating voltage. In the case of humidity sensing, the diode used for measuring temperature also acts as a temperature compensating device for the humidity sensor, thereby having a dual function in the system.
摘要翻译： 本公开涉及一种用于测量相对湿度和温度的系统，其中提供了三个受控切换矩阵，第一矩阵确定用于确定温度或相对湿度的电流是否将通过二极管馈送到从当前的系统电压输出 电压输出将转换为适当的温度或相对湿度读数。 剩余的两个矩阵各自由振荡电压控制，该振荡电压根据振荡电压是正还是负来交替输出或输入端。 这使得电流在振荡电压的每个半周期期间以相反方向通过湿度响应电阻器。 在湿度感测的情况下，用于测量温度的二极管也用作湿度传感器的温度补偿装置，从而在系统中具有双重功能。
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