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公开(公告)号：US20240240790A1
公开(公告)日：2024-07-18
申请号：US18096774
申请日：2023-01-13
发明人： John Lane , Andrew Hensch , Andrew Gastrow , Donald Duffek
CPC分类号： F23N5/18 , F23N5/006 , F24H1/186 , F24H9/0094 , F23N2005/181 , F23N2225/10 , F23N2235/06 , F23N2235/16
摘要： A surface heater automatically adjusts the supply of fuel and/air to the burner in order to maintain a desired air/fuel ratio despite changes in ambient air temperature and/or pressure. The adjustment may be performed on a periodic or continuous basis and on either an open-loop basis or a closed-loop basis. The adjustment includes actuating one or more control devices that control the flow of air and/or fuel to the burner. If the adjustment is performed on a closed-loop basis, signals from a sensor can be used as feedback to control the flow of air and/or fuel into the burner to maintain a setpoint of a controlled parameter. The controlled parameter may include one or more of air mass flow rate, an intake O2 concentration, an exhaust O2 concentration, an exhaust gas composition, and an exhaust gas temperature.
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公开(公告)号：US20240183533A1
公开(公告)日：2024-06-06
申请号：US18061806
申请日：2022-12-05
申请人： Emerson Electric Co.
IPC分类号： F23N1/00
CPC分类号： F23N1/005 , F23N2223/04 , F23N2223/08 , F23N2235/06 , F23N2235/16
摘要： A modulating gas valve assembly includes a modulating gas valve to variably control a flow of gas through the gas valve assembly and a control circuit. The control circuit includes a valve memory storing a calibration table for the modulating gas valve, and a controller communicatively coupled to the peripheral component. The calibration table includes a plurality of control settings for the modulating gas valve, each control setting being associated with a different gas flow rate. The controller is programmed to receive a command to open the gas valve, and to control the gas valve to a target control setting in the calibration table adjusted in accordance with a valve offset.
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公开(公告)号：US20230304662A1
公开(公告)日：2023-09-28
申请号：US18203201
申请日：2023-05-30
CPC分类号： F23N3/005 , F23L3/00 , F23L13/04 , F23L1/00 , F23N2235/06
摘要： The disclosed technology includes a device for extending the turndown ratio of a gas-fired burner system. The device can comprise a variable area device configured reduce the amount of fuel and air passed to the burner during low output conditions by adjusting the cross-sectional area of the passage between the blower and the burner. The variable area device can be controlled by an actuator that adjusts the position of the variable area device. The actuator can be manually controlled, mechanically controlled, or electronically controlled.
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公开(公告)号：US12092328B2
公开(公告)日：2024-09-17
申请号：US18203201
申请日：2023-05-30
CPC分类号： F23N3/005 , F23L1/00 , F23L3/00 , F23L13/04 , F23N2235/06
摘要： The disclosed technology includes a device for extending the turndown ratio of a gas-fired burner system. The device can comprise a variable area device configured reduce the amount of fuel and air passed to the burner during low output conditions by adjusting the cross-sectional area of the passage between the blower and the burner. The variable area device can be controlled by an actuator that adjusts the position of the variable area device. The actuator can be manually controlled, mechanically controlled, or electronically controlled.
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公开(公告)号：US20240175577A1
公开(公告)日：2024-05-30
申请号：US18517538
申请日：2023-11-22
发明人： Wolfgang Uhrig , Frank Heinke , Christoph Brune
CPC分类号： F23N1/025 , F23D23/00 , F23N2235/06 , F23N2235/14
摘要： The invention relates to a burner unit for a furnace, in particular a continuous furnace, a tunnel furnace or the like, to a furnace and to a method for operating a furnace, the burner unit having at least two burners which are configured for burning a combustion gas, the burner unit having a gas pipe and an air pipe for supplying the burners with combustion gas, the burner unit having at least one gas metering valve in the gas pipe and at least one air metering valve in the air pipe, the gas metering valve and the air metering valve being controllable by means of a shared control device, the gas metering valve being a magnet valve and the air metering valve being a magnet valve as well.
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公开(公告)号：US11719433B2
公开(公告)日：2023-08-08
申请号：US17524296
申请日：2021-11-11
申请人： ANDRITZ INC.
发明人： John Phillips , David Watson
IPC分类号： F23L13/02 , F23L9/00 , F23L13/00 , F24F140/40 , F23J3/00
CPC分类号： F23L13/02 , F23L9/00 , F23L13/00 , F23C2201/101 , F23J3/00 , F23N2235/06 , F24F2140/40
摘要： A damper for a furnace, the damper including an air port damper body engaged to an air port opening of a furnace; and at least one velocity plate in hinged engagement to the air port damper body so that an air controlling end surface of the at least one velocity plate is substantially aligned to a wall of the furnace at the air port opening when the at least one velocity plate is in a fully opened position.
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公开(公告)号：US11703224B2
公开(公告)日：2023-07-18
申请号：US16851368
申请日：2020-04-17
CPC分类号： F23N3/005 , F23L1/00 , F23L3/00 , F23L13/04 , F23N2235/06
摘要： The disclosed technology includes a device for extending the turndown ratio of a gas-fired burner system. The device can comprise a variable area device configured reduce the amount of fuel and air passed to the burner during low output conditions by adjusting the cross-sectional area of the passage between the blower and the burner. The variable area device can be controlled by an actuator that adjusts the position of the variable area device. The actuator can be manually controlled, mechanically controlled, or electronically controlled.
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