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公开(公告)号：US10989206B1
公开(公告)日：2021-04-27
申请号：US15865839
申请日：2018-01-09
申请人： Jeffery F. Kallenberger , James L. E. Meats , William S. Hohulin , Robert A. Valbracht , Rickey W. Jennings
发明人： Jeffery F. Kallenberger , James L. E. Meats , William S. Hohulin , Robert A. Valbracht , Rickey W. Jennings
摘要： A fan control system has a fan duct, a fan mounted in the duct, an electronic commutator (EC) motor for driving the fan, and a control system hub for controlling the EC motor. A pressure differential sensing system is mounted in association with duct and feeding a pressure differential signal to the control system hub. An input device mounted on the control system hub for scaling an output signal from a low percent extreme to a high percent extreme and sends that output signal to the EC motor. Wherein the control system hub speeds, slows or switches OFF the EC motor according to the pressure differential signal except that the input device sets a speed limit ceiling on the EC motor.
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公开(公告)号：US06508627B2
公开(公告)日：2003-01-21
申请号：US09870367
申请日：2001-05-30
IPC分类号： F04D2930
CPC分类号： F04D29/282 , F04D29/30 , Y10T29/49329 , Y10T29/49339
摘要： This centrifugal blower fan wheel has extruded-aluminum airfoil blades. The preferred blades have two hollow regions, separated by an angled mid-load support beam, inside the blade. The nose section of the blade (at the leading edge) and the tail section of the blade (at the trailing edge) have open semi-circular grooves which face the adjacent hollow sections and are designed to accept thread cutting or thread forming screws for attachment of the blade to a ring-shroud and back-plate.
摘要翻译： 该离心式鼓风机风扇叶片具有挤压铝型翼型叶片。 优选的叶片具有在叶片内部的两个中空区域，其由成角度的中间负载支撑梁分开。 叶片的前部（前缘）和叶片的尾部（在后缘处）具有开口的半圆形槽，其面向相邻的中空部分并被设计成接受用于附接的螺纹切割或螺纹成形螺钉 的叶片到环形护罩和背板。
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