公开(公告)号：US4655394A

公开(公告)日：1987-04-07

申请号：US683648

申请日：1984-12-19

Applicant: Gerald P. Ferrazza ,  Pamela R. Huck

Inventor： Gerald P. Ferrazza ,  Pamela R. Huck

IPC: B05B7/04 ,  B05B1/04 ,  B05B7/00

CPC classification number: B05B1/042 ,  B05B7/0056

Abstract: A dual purpose nozzle for low pressure foam generating and high pressure fluid spraying including a nozzle body having inlet and outlet portions and defining a slide chamber and a mixing chamber, an inner nozzle is slidably mounted in the slide chamber and having an internal passageway for communicating fluid from the inlet portion to the outlet portion of the nozzle body, the mixing chamber terminating in an outlet discharge opening and the nozzle body having at least one inlet opening therein upstream of the outlet discharge opening for admitting air into the mixing chamber, the inner nozzle having a discharge end with a primary discharge opening therein generally aligned with the outlet discharge opening in the nozzle body, a spring is provided for biasing the inner nozzle in an upstream direction with the discharge end normally disposed above the air opening in the mixing chamber so that low pressure fluid entering the mixing chamber from the passageway draws air in through the air openings to generate a foam of bubbles and droplets which is sprayed from the outlet discharge opening of the nozzle body. Shoulders are provided on the inner nozzle for causing it to move downstream in the slide chamber and the mixing chamber against the bias of the spring when high pressure fluid is admitted to the passageway and discharged from the end thereof below the air intake openings and in close proximity to the discharge end of the nozzle body to form a high pressure fluid spray.

Abstract translation: 一种用于低压泡沫发生和高压流体喷射的双用途喷嘴，包括具有入口和出口部分并限定滑动室和混合室的喷嘴体，内部喷嘴可滑动地安装在滑动室中，并具有用于连通的内部通道 流体从喷嘴主体的入口部分到出口部分，混合室终止于出口排出口，喷嘴主体具有在出口排放口上游的至少一个入口，用于允许空气进入混合室，内部 喷嘴具有排出端，其主要排出口大致与喷嘴体中的出口排出口对准，设置有用于沿着上游方向偏置内部喷嘴的弹簧，其中排出端通常设置在混合室中的空气开口上方 使得从通道进入混合室的低压流体通过空气吸入空气 开口以产生从喷嘴体的出口排出口喷射的气泡和液滴的泡沫。 在内部喷嘴上设置有肩部，用于当高压流体进入通道并从空气入口开口下方的端部排出时，使其在滑动室和混合室中的下游移动，抵抗弹簧的偏压 靠近喷嘴体的排放端，以形成高压流体喷雾。