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公开(公告)号：US5064119A
公开(公告)日：1991-11-12
申请号：US668732
申请日：1991-03-12
Applicant: Robert R. Mellette
Inventor： Robert R. Mellette
CPC classification number: B05B7/0081 , B05B7/0815 , B05B7/0838
Abstract: A high volume low pressure air spray gun has an atomizing air orifice for atomizing a stream of liquid coating material into a conical spray and opposed side port air orifices for flattening the spray into a fan-shaped pattern. The gun receives air at pressures up to about 100 psi, and an air flow restriction in the form of a venturi is in an air supply passage in the gun barrel. A valve stem for controlling the flow rate of air to the side port orifices extends through the venturi, and is configured to vary the venturi air flow area in response to changes in the flow rate of air to the side port orifices. When the valve stem is positioned for maximum air flow to the side port orifices, it establishes a maximum air flow area through the venturi, such that a high pressure of air at the gun air inlet, after flowing through the venturi, results in a high volume low pressure air flow at the atomizing and side port orifices. When the valve stem is positioned to reduce air flow to the side port orifices, it correspondingly reduces the flow area through the venturi to maintain the pressure of air at the atomizing orifice below a selected maximum value. The gun may carry a paint cup, in which case the cup is pressurized by air downstream from the venturi to prevent overpressurization of the cup.
Abstract translation: 大容量低压空气喷枪具有雾化空气孔口，用于将液体涂料材料雾化成圆锥形喷雾和相对的侧口空气孔口，用于将喷雾物平坦化为扇形图案。 枪以高达约100psi的压力接收空气，并且文丘里管形式的空气流限制在枪管中的空气供应通道中。 用于控制到侧端口孔的空气流量的阀杆延伸穿过文氏管，并且被配置成响应于空气流向侧端口孔的流速的变化而改变文丘里管空气流动面积。 当阀杆定位成最大空气流到侧面孔口时，它建立了通过文丘里管的最大气流面积，使得喷枪空气入口处的高压空气在流经文丘里管之后导致高 在雾化和侧口孔处的体积低压气流。 当阀杆被定位成减小到侧面孔口的空气流量时，它相应地减小了通过文丘里管的流动面积，以将雾化孔口处的空气压力保持在选定的最大值以下。 枪可以携带油漆杯，在这种情况下，杯子由文丘里管下游的空气加压，以防止杯子过度加压。
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公开(公告)号：US5180104A
公开(公告)日：1993-01-19
申请号：US658080
申请日：1991-02-20
Applicant: Robert R. Mellette
Inventor： Robert R. Mellette
CPC classification number: B05B7/0081 , B05B7/0815 , B05B7/1209
Abstract: A hydraulically assisted high volume low pressure air spray gun has an airless tip for hydraulically emitting a fan-shaped pattern of liquid coating material, an atomizing air orifice for emitting air to pneumatically break up the pattern of coating material into a fan-shaped atomized spray and opposed side port air orifices for emitting jets of air that impinge against opposite sides of the spray. The gun received coating material at pressures in the range of about 25 to 1000 psi and air at pressures up to about 60 psi. An air flow restrictor limits the pressure of air at a spray head of the gun and a valve for controlling the flow rate of air to the side port orifices also simultaneously controls the flow rate of air to the spray head to limit the pressure of air at the spray head to no more than a selected maximum pressure, despite changes in the flow rate of air to the side port orifices. By virtue of the coating liquid being hydraulically emitted from the airless tip in a fan-shaped pattern, less pneumatic energy is required to fully atomize the coating and improved atomization is obtained for a given pressure and volume flow rate of air at the spray head.
Abstract translation: 液压辅助的大容量低压空气喷枪具有用于液压喷射液体涂料材料的扇形图案的无空气尖端，用于发射空气的雾化空气孔气流地将涂料的图案分解成扇形雾化喷雾 和相对的侧口空气孔，用于喷射冲击喷雾相对两侧的空气射流。 枪在约25至1000psi范围内的压力下接受涂层材料，空气的压力高达约60psi。 气流限制器限制枪的喷头处的空气压力，并且用于控制到侧口孔的空气流量的阀也同时控制到喷头的空气流量以限制空气的压力 喷头不得超过选定的最大压力，尽管空气流向侧口孔的流量变化。 由于涂覆液体以扇形图案从无空气末端液压发射，需要较少的气动能量来完全雾化涂层，并且对于喷雾头处的给定的压力和体积流量的速度获得了改进的雾化。
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公开(公告)号：USRE36378E
公开(公告)日：1999-11-09
申请号：US507687
申请日：1995-07-25
Applicant: Robert R. Mellette
Inventor： Robert R. Mellette
CPC classification number: B05B7/0081 , B05B7/0815 , B05B7/0838
Abstract: A high volume low pressure air spray gun has an atomizing air orifice for atomizing a stream of liquid coating material into a conical spray and opposed side port air orifices for flattening the spray into a fan-shaped pattern. The gun receives air at pressures up to about 100 psi, and an air flow restriction in the form of a venturi is in an air supply passage in the gun barrel. A valve stem for controlling the flow rate of air to the side port orifices extends through the venturi, and is configured to vary the venturi air flow area in response to changes in the flow rate of air to the side port orifices. When the valve stem is positioned for maximum air flow to the side port orifices, it establishes a maximum air flow area through the venturi, such that a high pressure of air at the gun air inlet, after flowing through the venturi, results in a high volume low pressure air flow at the atomizing and side port orifices. When the valve stem is positioned to reduce air flow to the side port orifices, it correspondingly reduces the flow area through the venturi to maintain the pressure of air at the atomizing orifice below a selected maximum value. The gun may carry a paint cup, in which case the cup is pressurized by air downstream from the venturi to prevent overpressurization of the cup.
Abstract translation: 大容量低压空气喷枪具有雾化空气孔口，用于将液体涂料材料雾化成圆锥形喷雾和相对的侧口空气孔口，用于将喷雾物平坦化为扇形图案。 枪以高达约100psi的压力接收空气，并且文丘里管形式的空气流限制在枪管中的空气供应通道中。 用于控制到侧端口孔的空气流量的阀杆延伸穿过文氏管，并且被配置成响应于空气流向侧端口孔的流速的变化而改变文丘里管空气流动面积。 当阀杆定位成最大空气流到侧面孔口时，它建立了通过文丘里管的最大气流面积，使得喷枪空气入口处的高压空气在流经文丘里管之后导致高 在雾化和侧口孔处的体积低压气流。 当阀杆被定位成减小到侧面孔口的空气流量时，它相应地减小了通过文丘里管的流动面积，以将雾化孔口处的空气压力保持在选定的最大值以下。 枪可以携带油漆杯，在这种情况下，杯子由文丘里管下游的空气加压，以防止杯子过度加压。
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4.发明授权
公开(公告)号：US4775291A
公开(公告)日：1988-10-04
申请号：US78408
申请日：1987-07-27
Applicant: Samuel W. Culbertson , Robert R. Mellette
Inventor： Samuel W. Culbertson , Robert R. Mellette
CPC classification number: F04D13/027 , F04D29/0413 , F04D29/0416 , H02K49/106 , H02K2005/1287 , H02K5/128
Abstract: A magnetic clutch drive for rotary pumps is characterized by a motor driven outer magnetic clutch member juxtaposed to an imperforate wall of a pump housing. Within the interior of the housing a pump impeller shaft carries an inner magnetic clutch member juxtaposed to the wall opposite from the outer member. The wall is of a nonmagnetic and electrically nonconductive material, so magnetic lines of force penetrate the wall and magnetically lock the outer and inner clutch members, without any mechanical connection between the two. Consequently, as the motor is brought up to speed, the two clutch members magnetically lock the motor shaft to the impeller shaft to drive the impeller shaft at the same speed as the motor shaft, without generating eddy current losses in the wall. Also included is a thrust balancing mechanism that uses the pressure of pumped liquid to develop and exert on the impeller shaft a force substantially equal in magnitude and opposite in direction to thrust forces exerted on the shaft during pump operation, and the interior of the housing wall is pressurized to maintain a dry operating environment for the inner clutch member.
Abstract translation: 用于旋转泵的电磁离合器驱动器的特征在于与泵壳体的无孔壁并置的马达驱动的外部磁性离合器部件。 在壳体的内部，泵叶轮轴承有与外部构件相对的壁并置的内部磁性离合器构件。 壁是非磁性和非导电材料，因此磁力线穿过壁并磁性地锁定外部和内部离合器构件，而两者之间没有任何机械连接。 因此，随着电动机达到转速，两个离合器部件将电动机轴磁力地锁定到叶轮轴上，以与电动机轴相同的速度驱动叶轮轴，而不会在壁中产生涡流损耗。 还包括推力平衡机构，其使用泵送液体的压力来在叶轮轴上产生大体上相等的力并且在泵操作期间施加在轴上的推力相反的力，并且壳体壁的内部 被加压以保持内部离合器构件的干燥的操作环境。
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