| 摘要 |
An injector for delivering a working fluid into a working environment is disclosed. According to one embodiment of the present invention, the injector includes a pre-metering chamber with a control valve controlling fluid delivery rate and a swirl chamber, in which a swirling flow is created and atomization is achieved at low injector pressure when it is released. In another embodiment, the injector includes a swirl chamber and an atomization element with a bore, through which a control valve is positioned. The control valve forces a working fluid flow through the atomization element when the injector is energized to create a metered swirling flow. To avoid issues with deteriorated working fluid, a purging apparatus is used for emptying working fluid residue in the injector, and a special control method is used when the injector works in a high-temperature working environment. |
| 主权项 |
1. An apparatus for delivering a working fluid into a working environment, comprising:
a reservoir holding said working fluid; and an atomizing injector fluidly coupled to said reservoir including: an upper injector body having an fluid inlet, a first fluid exit nozzle, and a needle valve movably disposed in between said fluid inlet and said first fluid exit nozzle, allowing a flow of said working fluid through said first fluid exit nozzle at a opening position and blocking said flow of said working fluid at a closed position, and a lower injector body in connection with said upper injector body having a second fluid exit nozzle in contact with said working environment, wherein said lower injector body has an atomization element positioned therein with a bottom end, a side portion, and a upper end, creating a swirl chamber in said lower injector body in between said bottom end of said atomization element and said second fluid exit nozzle, and a pre-atomization chamber in between said first fluid exit nozzle and said upper end of said atomization element. |
