초록 ▼

A nitrogen injector system is provided including a nitrogen injector unit. The nitrogen injector unit includes liquid nitrogen with a head space having gaseous nitrogen at a pressure exceeding atmospheric pressure. An injector orifice is provided, as is a distributing disk which normally closes that

A nitrogen injector system is provided including a nitrogen injector unit. The nitrogen injector unit includes liquid nitrogen with a head space having gaseous nitrogen at a pressure exceeding atmospheric pressure. An injector orifice is provided, as is a distributing disk which normally closes that orifice. The distributing disk is provided with metering apertures for receiving metered amounts of liquid nitrogen from a nitrogen receptacle and transporting those metered amounts to a position adjacent the injector orifice and for opening the orifice when the metered amount is in the requisite position. The pressure of nitrogen gas within the head space is utilized to eject the metered amount from the metering aperture into a container located at the dispensing position. Containers are advanced to the dispensing position on a container conveyor. The distributing disk is rotated at a speed proportional to the speed of the container conveyor with a common drive such that a requisite amount of nitrogen will be dispensed to each container regardless of fluctuations in the speed of the conveyor. A solenoid is provided for selectively disabling the ejection of liquid nitrogen by the disconnection of a gas discharge conduit which couples the injector orifice with the high pressure nitrogen gas within the head space.

대표청구항 ▼

A liquid nitrogen injector system for dispensing liquid nitrogen to a series of moving containers of the type having: a liquid nitrogen storage unit; a liquid nitrogen injector unit; a container conveyor for transporting containers in said series to said injector unit; a means for transferring liqui

A liquid nitrogen injector system for dispensing liquid nitrogen to a series of moving containers of the type having: a liquid nitrogen storage unit; a liquid nitrogen injector unit; a container conveyor for transporting containers in said series to said injector unit; a means for transferring liquid nitrogen from said storage unit to said injector unit; said injector unit comprising: a nitrogen receptacle having a first portion for nitrogen in the liquid phase; and a second portion for nitrogen in the gaseous phase, said gaseous phase nitrogen being at a pressure exceeding atmospheric pressure; an injector orifice; a distributing disk having metering apertures radially disposed therein, said disk being rotatable with respect to said injector orifice, said distributing disk normally blocking said injector orifice, said apertures receiving a metered amount of liquid nitrogen from said first portion of said receptacle; means for rotating said disk and for transporting said metered amount to a position adjacent said orifice, said orifice being unblocked when said metered amount is in said position; and ejecting means pneumatically connected to said second portion of said receptacle for ejecting said metered amount from said unblocked orifice by the pressure of said gaseous nitrogen.