公开(公告)号：US20190308206A1

公开(公告)日：2019-10-10

申请号：US15944875

申请日：2018-04-04

Applicant: Delavan Inc.

Inventor： Douglas L. Ummel ,  John Earl Short ,  Andy W. Tibbs

IPC: B05B1/30

Abstract: An injector includes a housing including a fluid passage extending from an inlet of the housing to an outlet end of the housing. An actuator is mounted within the housing. A pintle extends along a longitudinal axis from an actuator end to a pintle head. The actuator end of the pintle is operatively connected to the actuator for actuation along the longitudinal axis. A tip member is mounted to the outlet end of the housing. The tip member includes an outlet orifice and a pintle seat. In a seated position of the pintle, the pintle head blocks flow to the outlet orifice. In an open position of the pintle, the pintle head allows flow. The pintle head includes a swirl passage therein, wherein the swirl passage is angled tangential relative to the longitudinal axis to induce swirl on flow passing between the pintle head and the pintle seat.

公开(公告)号：US20200290061A1

公开(公告)日：2020-09-17

申请号：US16891759

申请日：2020-06-03

Applicant: Delavan Inc.

Inventor： Douglas L. Ummel ,  John Earl Short ,  Andy W. Tibbs

IPC: B05B1/30 ,  F02M51/06 ,  F01N3/36 ,  F02M61/16

Abstract: An injector includes a housing including a fluid passage extending from an inlet of the housing to an outlet end of the housing. An actuator is mounted within the housing. A pintle extends along a longitudinal axis from an actuator end to a pintle head. The actuator end of the pintle is operatively connected to the actuator for actuation along the longitudinal axis. A tip member is mounted to the outlet end of the housing. The tip member includes an outlet orifice and a pintle seat. In a seated position of the pintle, the pintle head blocks flow to the outlet orifice. In an open position of the pintle, the pintle head allows flow. The pintle head includes a swirl passage therein, wherein the swirl passage is angled tangential relative to the longitudinal axis to induce swirl on flow passing between the pintle head and the pintle seat.