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公开(公告)号：US5379752A
公开(公告)日：1995-01-10
申请号：US90332
申请日：1993-07-12
CPC分类号： F23N1/022 , F23N2023/08 , F23N2025/12 , F23N2033/04 , F23N2033/08 , F23N2033/10 , F23N2037/10 , F23N5/18
摘要： A two-stage induced draft furnace is operated at either high heat or low heat with the gas valve switched to high-fire or low-fire. High-fire and low-fire combustion pressure switches sense the collector box flue gas pressure and actuate respective solenoids of the gas valve. Under some conditions the inducer can produce sufficient negative pressure at low fire to prove the high fire pressure switch and cycle the burners on high fire. To prevent this, relay contacts are interposed between the high fire pressure switch and the gas valve solenoid to deny thermostat power to the high-fire solenoid whenever there is a call for low heat.
摘要翻译： 两级诱导式排风炉在高热或低热下运行，气阀切换到高火或低火。 高火和低火燃烧压力开关感应收集箱烟气压力并致动气阀的相应螺线管。 在一定条件下，诱导器可在低火下产生足够的负压，以证明高耐火压力开关，并将燃烧器循环在高火上。 为了防止这种情况，继电器触点插入在高耐火开关和气阀螺线管之间，以便在需要低热时拒绝对高火电磁阀的恒温器供电。
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公开(公告)号：US5573180A
公开(公告)日：1996-11-12
申请号：US510682
申请日：1995-08-03
CPC分类号： G05D23/1904 , F24F2011/0013
摘要： A thermostat monitors the indoor air temperature indicated by the thermostat's indoor air temperature sensor. The monitored indoor air temperature must be within a predefined range of acceptable temperatures to be considered valid. In the event the monitored temperature is outside this predefined range, the thermostat proceeds to read the outdoor air temperature and activate a heating system if the outdoor air temperature reading is below a predefined level.
摘要翻译： 恒温器监测恒温器室内空气温度传感器所指示的室内空气温度。 监测的室内空气温度必须在可认为有效的可接受温度的预定范围内。 在监控温度超出此预定范围的情况下，如果室外温度读数低于预定水平，恒温器将继续阅读室外空气温度并启动加热系统。
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公开(公告)号：US06261662B1
公开(公告)日：2001-07-17
申请号：US08238681
申请日：1994-05-02
申请人： Hall Virgil, Jr.
发明人： Hall Virgil, Jr.
IPC分类号： B32B700
CPC分类号： B29C33/0033 , Y10T428/24174 , Y10T428/24182 , Y10T428/24273 , Y10T428/24322 , Y10T428/24537 , Y10T428/2457 , Y10T428/2495
摘要： In a molded element containing therein a horizontally disposed bore, the improvement comprising: a plurality of downwardly disposed first elements having distal ends, and being spaced apart from one another, and a plurality of upwardly disposed second elements having distal ends and being spaced apart from one another, wherein the plurality of first elements are offset from the plurality of second elements, whereby a horizontally disposed bore is formed by the distal ends of the plurality of first elements and the distal ends of the plurality of second elements.
摘要翻译： 在其中包含水平设置的孔的模制元件中，改进包括：多个向下设置的第一元件，其具有远端并且彼此间隔开，并且多个向上设置的第二元件具有远端并与 彼此相对，其中多个第一元件偏离多个第二元件，由此由多个第一元件的远端和多个第二元件的远端形成水平设置的孔。
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公开(公告)号：US5522541A
公开(公告)日：1996-06-04
申请号：US322948
申请日：1994-10-12
CPC分类号： F23N5/203 , F23N2023/08 , F23N2033/02 , F23N2037/10 , F23N5/18 , F23N5/24
摘要： In a two-stage furnace system, including a thermostat, at least one gas burner with a low and high-fire operating capability, an inducer fan having low and high speed operating settings, and a high-fire pressure switch, a method for handling the high-fire pressure switch being in an inappropriately open condition. The method has the steps of: determining whether the thermostat is issuing a call for high heat and, if it is, determining if the high-fire pressure switch is open. If the high-fire pressure switch is open, waiting a predetermined time, determining if the high-fire pressure switch is still open and, if it is, completing a furnace shutdown procedure, then initiating a normal shutdown, then an ignition sequence in high-speed inducer pre-purge mode, determining if the high-fire pressure switch remains open, and if so, running at least one gas burner in low-fire mode. If, while these steps are being performed, the high-fire pressure switch closes, running the system in high-fire mode.
摘要翻译： 在两级炉系统中，包括恒温器，至少一个具有低和高火操作能力的气体燃烧器，具有低和高速操作设置的诱导器风扇，以及高火压力开关，一种处理方法 高火压力开关处于不适当的开启状态。 该方法具有以下步骤：确定恒温器是否发出高热量呼叫，如果是，确定高火开关是否打开。 如果高火压力开关打开，等待预定时间，确定高压开关是否仍然打开，如果是，则完成炉关闭程序，然后启动正常停机，然后点火顺序高 - 速度诱导器预吹扫模式，确定高火压力开关是否保持打开，如果是，则在低火模式下运行至少一个燃气燃烧器。 如果在执行这些步骤的同时，高空压力开关关闭，系统以高火模式运行。
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公开(公告)号：US06572363B1
公开(公告)日：2003-06-03
申请号：US09871935
申请日：2001-06-01
申请人： Hall Virgil, Jr. , Kevin Thompson
发明人： Hall Virgil, Jr. , Kevin Thompson
IPC分类号： F23N520
CPC分类号： F23N5/203 , F23D14/725 , F23N2023/22
摘要： A method and system for detecting flame rollout is disclosed. The detection system includes a processor programmed to execute a furnace lockout when the flame proving signal is lost three times after successful burner ignition has been established on each of three heating cycles within a predetermined period of accumulated burner on-time. In one embodiment the period of accumulated burner on-time is 60 minutes. The program executed by the processor resides in firmware. The system and method of present invention mitigates the potentially harmful accumulation of flue gasses when flame sense is lost due to flame rollout.
摘要翻译： 公开了一种用于检测火焰推出的方法和系统。 检测系统包括处理器，该处理器被编程为在燃烧器点火已经在累积燃烧器准时的预定时段内的三个加热循环中的每一个上建立成功的燃烧器点火之后，当火焰探测信号丢失三次时执行炉锁定。 在一个实施例中，累积燃烧器开启时间为60分钟。 处理器执行的程序驻留在固件中。 本发明的系统和方法减轻了由于火焰推出导致的火焰感觉丧失时烟气的潜在有害积累。
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公开(公告)号：US5791332A
公开(公告)日：1998-08-11
申请号：US602436
申请日：1996-02-16
CPC分类号： F23N1/062 , F23N3/082 , F23N2027/20 , F23N2033/04
摘要： The present invention is a method and apparatus for controlling the flow of combustion air and/or combustion products through a furnace which may experience changing flow restrictions. The method provides constant flow through an induced-draft furnace by determining torque values applied to an inducer motor of the furnace from a lookup table, which is established by operating a test furnace under changing flow restrictions, typically by measuring furnace flue gas carbon monoxide concentration. A lookup table according to the invention may include motor operating performance plots for controlling inducer speed under operating conditions, and threshold plots, which may be employed for determining activation of furnace events such as ignition, gas valve energizing, and shutdown. In an adaptive method of the invention, an adaptive lookup table is provided by averaging torque values from each of several lookup tables. A pressure switch is provided having an opening pressure commensurate with a minimum excess air level. The pressure switch has a closing pressure which determines a torque biasing level for the furnace based on motor RPM and torque values determined from the adaptive lookup table.
摘要翻译： 本发明是一种用于控制燃烧空气和/或燃烧产物通过炉的流动的方法和装置，其可能经历改变的流动限制。 该方法通过从查找表中确定施加到炉的诱导电动机的扭矩值来提供恒定的流量，该查找表通过在变化的流量限制下操作测试炉而建立，通常通过测量炉烟道一氧化碳浓度 。 根据本发明的查找表可以包括用于在操作条件下控制诱导器速度的电动机操作性能曲线图和阈值图，其可以用于确定炉事件的启动，例如点火，燃气阀激励和关闭。 在本发明的自适应方法中，通过对来自几个查找表中的每一个的转矩值进行平均来提供自适应查找表。 提供具有与最小过剩空气水平相当的开启压力的压力开关。 压力开关具有关闭压力，其基于从自适应查找表确定的电动机RPM和扭矩值来确定炉的转矩偏置水平。
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公开(公告)号：USD386577S
公开(公告)日：1997-11-18
申请号：US60295
申请日：1996-09-16
申请人： Paul M. Haydock , Hall Virgil, Jr.
设计人： Paul M. Haydock , Hall Virgil, Jr.
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