发明名称 |
Inducer speed control method for combustion furnace |
摘要 |
In a multistage combustion furnace having a motor driven inducer blower and a pressure sensing device or set of switches for sensing pressure in the combustion gas flowpath through the furnace, a high firing rate blower speed and low firing rate blower speed are set based on the blower speed setting required for a medium firing rate. Each particular furnace, having its own pressures and combustion gas resistance to flow characteristics, may be provided with a database of inducer blower motor speeds required to achieve predetermined pressures in the combustion gas flowpath for a variety of combustion gas venting systems generating such resistance. |
申请公布号 |
US9261277(B2) |
申请公布日期 |
2016.02.16 |
申请号 |
US200711893242 |
申请日期 |
2007.08.15 |
申请人 |
Trane International Inc. |
发明人 |
Hugghins Gordon Jeffrey;Kowalski Stephen;Roycroft Robert G. |
分类号 |
F24H9/20;F23N3/00;F23N3/08;F23N5/24;F24H3/08 |
主分类号 |
F24H9/20 |
代理机构 |
Conley Rose, P.C. |
代理人 |
Conley Rose, P.C. ;Brown, Jr. J. Robert;Schofield Michael J. |
主权项 |
1. A method for operating a multistage combustion furnace, said combustion furnace including a heat exchanger including at least one combustion gas flowpath, an inducer blower for inducing the flow of air and combustion gases through said flowpath, for discharging combustion gases to a vent conduit, a blower motor drivably connected to said blower, pressure sensing means for sensing the pressure within the combustion gas flowpath at a predetermined location, a combustion fuel control valve and a control system including a microprocessor operably connected to said control valve, said blower motor, said pressure sensing means and to a thermostat for receiving signals for a call for heat for a space serviced by said furnace, said method comprising:
starting said combustion furnace at a first firing rate in response to a call for heat by said thermostat; starting said blower motor at a predetermined speed for said first firing rate; learning a blower speed for said first firing rate, wherein the blower speed at which said pressure sensing means is actuated is the learned blower speed for said first firing rate; and determining a blower speed for said blower for a different firing rate based on the learned blower speed for said first firing rate. |
地址 |
Piscataway NJ US |