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1. 发明授权

US07937938B2 Hydraulic reversing fan valve and machine using same 有权
标题翻译：液压换向风机阀和机器使用相同
公开(公告)号：US07937938B2
公开(公告)日：2011-05-10
申请号：US12148808
申请日：2008-04-23
申请人： Beau Kuipers , Edward Mate , Glenn Stanfield
发明人： Beau Kuipers , Edward Mate , Glenn Stanfield
IPC分类号： F16D31/02
CPC分类号： F15B11/0406 , B60Y2200/415 , F01P11/12 , F15B2211/3127 , F15B2211/613 , F15B2211/7058 , F15B2211/755 , F15B2211/7741 , F15B2211/85 , F16H61/4043 , F16H61/4061
摘要： A machine includes a hydraulic fan system for circulating cooling air through an engine compartment. Periodically, the fan rotation direction is briefly reversed in order to dislodge any material debris that may have accumulated at the inlet to the engine compartment. When a fan reversal event is initiated, the fan motor will continue to rotate due to angular momentum even after the pump output flow has been switched from a first motor port to a second motor port. During this continued rotation as the fan decelerates to zero speed, vacuum pressure levels can arise at the first motor port, and a pressure spike can develop at the second motor port. In order to alleviate these conditions, a pressure transfer valve briefly opens to facilitate fluid flow directly from the second motor port to the first motor port as the fan motor decelerates towards zero speed before reversing direction, simultaneously alleviating vacuum and pressure spike conditions.
摘要翻译：机器包括用于使冷却空气通过发动机室循环的液压风扇系统。周期性地，风扇旋转方向被短暂地反转，以便消除可能在发动机舱的入口积聚的任何材料碎屑。当启动风扇反转事件时，即使在泵输出流量从第一个电机端口切换到第二个电机端口之后，风扇电机也会由于角度动量而继续旋转。在风扇减速到零速度期间的持续旋转期间，在第一马达端口处可能产生真空压力水平，并且可以在第二马达端口处产生压力尖峰。为了减轻这些条件，压力传递阀短暂地打开，以便随着风扇马达在反转方向之前向零速度减速，同时减轻真空和压力尖峰条件，便于流体从第二马达端口直接流到第一马达端口。

2. 发明申请

US20090266072A1 Hydraulic reversing fan valve and machine using same 有权
标题翻译：液压换向风机阀和机器使用相同
公开(公告)号：US20090266072A1
公开(公告)日：2009-10-29
申请号：US12148808
申请日：2008-04-23
申请人： Beau Kuipers , Edward Mate , Glenn Stanfield
发明人： Beau Kuipers , Edward Mate , Glenn Stanfield
IPC分类号： F16D39/00 , F16K31/02 , F16D31/00
CPC分类号： F15B11/0406 , B60Y2200/415 , F01P11/12 , F15B2211/3127 , F15B2211/613 , F15B2211/7058 , F15B2211/755 , F15B2211/7741 , F15B2211/85 , F16H61/4043 , F16H61/4061
摘要： A machine includes a hydraulic fan system for circulating cooling air through an engine compartment. Periodically, the fan rotation direction is briefly reversed in order to dislodge any material debris that may have accumulated at the inlet to the engine compartment. When a fan reversal event is initiated, the fan motor will continue to rotate due to angular momentum even after the pump output flow has been switched from a first motor port to a second motor port. During this continued rotation as the fan decelerates to zero speed, vacuum pressure levels can arise at the first motor port, and a pressure spike can develop at the second motor port. In order to alleviate these conditions, a pressure transfer valve briefly opens to facilitate fluid flow directly from the second motor port to the first motor port as the fan motor decelerates towards zero speed before reversing direction, simultaneously alleviating vacuum and pressure spike conditions.
摘要翻译：机器包括用于使冷却空气通过发动机室循环的液压风扇系统。周期性地，风扇旋转方向被短暂地反转，以便消除可能在发动机舱的入口积聚的任何材料碎屑。当启动风扇反转事件时，即使在泵输出流量从第一个电机端口切换到第二个电机端口之后，风扇电机也会由于角度动量而继续旋转。在风扇减速到零速度期间的持续旋转期间，在第一马达端口处可能产生真空压力水平，并且可以在第二马达端口处产生压力尖峰。为了减轻这些条件，压力传递阀短暂地打开，以便随着风扇马达在反转方向之前向零速度减速，同时减轻真空和压力尖峰条件，便于流体从第二马达端口直接流到第一马达端口。

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