发明名称 |
FURNACE DRAFT CONTROL WITH REMOTE CONTROL FEATURE |
摘要 |
<p>An apparatus for controlling the speed of a combustion blower motor includes first means for generating an output signal representative of a differential pressure. A second means provides a second signal representative of a desired airflow output of the blower and a summation circuit receives the first signal and the second signal and generates a command signal in response thereto. A power output circuit receives the command signal and responsively provides a regulated level of power to the motor for controlling the speed thereof. The first means may be embodied as a diaphragm-type differential pressure transmitter while the second means may be embodied as an adjustable voltage source or as a source which provides an output signal representative of a temperature.</p> |
申请公布号 |
CA1253594(A) |
申请公布日期 |
1989.05.02 |
申请号 |
CA19860512796 |
申请日期 |
1986.06.30 |
申请人 |
JOHNSON SERVICE COMPANY |
发明人 |
SPENCE, SCOTT L.;HAYES, THOMAS E.;JAMIESON, J. SCOTT |
分类号 |
F23N5/18;G05D23/20;(IPC1-7):G05B5/00 |
主分类号 |
F23N5/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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