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Patent Agency Ranking
公开(公告)号：US11611302B2
公开(公告)日：2023-03-21
申请号：US17481859
申请日：2021-09-22
Applicant: Emerson Electric Co.
Inventor： Harshal Manik Pawar , John Francis Broker
Abstract: Disclosed are exemplary embodiments of systems and methods for controlling inducer motor speed. In an exemplary embodiment, a method includes changing stator voltage of an inducer motor (e.g., by changing a firing angle of a triac, using a transistor, a silicon controlled rectifier or semiconductor controlled rectifier (SCR), other switching device, etc.); determining actual inducer motor speed (e.g., by using a hall effect sensor or other speed sensor, etc.); and after determining the actual inducer motor speed, changing the motor stator voltage (e.g., by changing the firing angle of the triac, etc.) to a value at which the actual inducer motor speed is controllably regulated and/or maintained substantially at a set speed.
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2.发明申请公开(公告)号：US20180306445A1
公开(公告)日：2018-10-25
申请号：US15916868
申请日：2018-03-09
Applicant: Emerson Electric Co.
Inventor： Harshal Manik Pawar
CPC classification number: F23Q23/10 , F23Q7/06 , F24H9/2085
Abstract: Exemplary embodiments are provided of igniter failure detection assemblies for furnaces. In an exemplary embodiment, an igniter failure detection assembly includes a hot surface igniter, an igniter relay coupled to the hot surface igniter, a resistor coupled in parallel with the hot surface igniter and defining a node between the igniter relay, the resistor and hot surface igniter, and a controller configured to detect a voltage at the node and determine whether a fault condition of the hot surface igniter exists based on the detected voltage at the node. A detected node voltage corresponding to a normal operation resistance value of the hot surface igniter is indicative of a normal operating hot surface igniter, and a detected node voltage corresponding to a resistance value of the resistor is indicative of a fault condition of the hot surface igniter. Example methods of detecting an igniter fault condition are also disclosed.
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公开(公告)号：US20160018836A1
公开(公告)日：2016-01-21
申请号：US14536922
申请日：2014-11-10
Applicant: Emerson Electric Co.
Inventor： Harshal Manik Pawar
CPC classification number: F24F11/62 , F24F11/30 , F24F2110/00 , G05D23/1902 , G05D23/1919 , G05F1/66 , H02M5/00 , H02M7/00
Abstract: A controller for use in a climate control system includes a power stealing circuit connectible with a control of the climate control system and configured for stealing power via a signal from a power source through the control. An overcurrent limiting circuit is configured to limit a first portion of the signal to prevent a false call for operation of the control. The overcurrent limiting circuit is further configured not to limit a second portion of the signal to prevent a false call, where the control is configured to recognize only the first portion as determinative of whether the signal is a call for operation.
Abstract translation: 一种用于气候控制系统的控制器包括可与气候控制系统的控制相连接并被配置为通过控制器通过来自电源的信号来窃取电力的电力窃取电路。 过流限制电路被配置为限制信号的第一部分以防止对控制的操作的错误呼叫。 过电流限制电路还被配置为不限制信号的第二部分以防止虚假呼叫，其中控制被配置为仅识别第一部分来确定信号是否是操作呼叫。
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公开(公告)号：US11781752B2
公开(公告)日：2023-10-10
申请号：US17356061
申请日：2021-06-23
Applicant: Emerson Electric Co.
Inventor： Harshal Manik Pawar
CPC classification number: F23Q23/10 , F23N5/242 , F23N5/265 , F24H9/2071 , F23N2231/12
Abstract: Exemplary embodiments are disclosed of controls including circuit assemblies configured for determining igniter, inducer relay, and igniter relay faults. In exemplary embodiments, a control for a system includes an input configured to receive a control signal, an inducer relay, an igniter relay, and a circuit assembly. The circuit assembly is configured to be coupled to the inducer relay, the igniter relay, and an igniter of the system. The circuit assembly comprises a plurality of diodes and is configured to enable detection of and distinguishing between a failure of the igniter, a failure of the inducer relay, and a failure of the igniter relay as determined by a waveform of the control signal at the input of the control for a given one of a plurality of operational states of the control.
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公开(公告)号：US09841203B2
公开(公告)日：2017-12-12
申请号：US14536922
申请日：2014-11-10
Applicant: Emerson Electric Co.
Inventor： Harshal Manik Pawar
CPC classification number: F24F11/62 , F24F11/30 , F24F2110/00 , G05D23/1902 , G05D23/1919 , G05F1/66 , H02M5/00 , H02M7/00
Abstract: A controller for use in a climate control system includes a power stealing circuit connectible with a control of the climate control system and configured for stealing power via a signal from a power source through the control. An overcurrent limiting circuit is configured to limit a first portion of the signal to prevent a false call for operation of the control. The overcurrent limiting circuit is further configured not to limit a second portion of the signal to prevent a false call, where the control is configured to recognize only the first portion as determinative of whether the signal is a call for operation.
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