Hand carried spraying apparatus
    1.
    发明授权
    Hand carried spraying apparatus 失效
    手提喷雾装置

    公开(公告)号:US3900165A

    公开(公告)日:1975-08-19

    申请号:US46072574

    申请日:1974-04-15

    摘要: This invention relates to a chemical spraying apparatus that may be hand carried while spraying. The spraying apparatus is powered by a small gasoline engine that drives a low volume compressor. The compressor pressurizes the atmosphere to a given pressure as determined by the speed of the gasoline engine. A chemical insecticide is mixed in the spraying nozzle with pressurized air being supplied by the compressor with the mixing being at some point remote to the compressor. A metering valve controls the flow of the insecticide into the mixing chamber of the nozzle while spraying. Design of the nozzle insures that droplets of the insecticide are broken down to the proper size range to insure maximum effectiveness per unit volume of the active ingredient.

    Centrifugal compressor
    2.
    发明授权
    Centrifugal compressor 失效
    离心式压缩机

    公开(公告)号:US3865506A

    公开(公告)日:1975-02-11

    申请号:US37756773

    申请日:1973-07-09

    发明人: GERLACH C RICHARD

    IPC分类号: F04D29/28 F04D29/44 F04D7/02

    CPC分类号: F04D29/442 F04D29/284

    摘要: A centrifugal compressor having a relatively low flow rate of less than 400 cfm at 4-6 psi comprises a housing enclosing a backward-bladed shaft mounted, motor driven impeller. The impeller blades have the configuration of air foils gradually increasing in width from their inlet tip to a point beyond the mid-length and then decreasing in width toward their discharge tip to define air flow channels between adjacent blades and the width of the channels increases linearly from the inlet end to the discharge end as a function of the channel length. The blades have a flat upper surface covered with a diffuser plate. The air flow channels discharge into a diffusion chamber which communicates with an annular pressure chamber surrounding the air inlet to the compressor, the walls of the pressure chamber defining an air nozzle to the air inlet. Auxillary vanes are positioned in the discharge end of the air flow channels.

    摘要翻译: 在4-6psi下具有小于400cfm的相对较低流量的离心式压缩机包括一个包围有叶片的轴向安装的马达驱动叶轮的壳体。 叶轮叶片具有宽度从入口尖端逐渐增加到超过中长度的点然后朝向其排出尖端减小的空气箔的构造,以限定相邻叶片之间的气流通道,并且通道的宽度线性增加 从入口端到排放端,作为通道长度的函数。 叶片具有被扩散板覆盖的平坦的上表面。 空气流动通道排放到扩散室中,该扩散室与围绕压缩机空气入口的环形压力室连通,压力室的壁限定到空气入口的空气喷嘴。 辅助叶片位于气流通道的排放端。