Sterilization system and method suitable for use in association with filler devices
View Patent ↗A sterilization system for use in association with a filler device configured for filling at least one of rigid and flexible containers comprising a sterilization chamber and a sterilant supply assembly. The sterilization chamber includes a housing, an inlet into the housing, an outlet from the housing and a product retainer assembly. These components define a cavity within which to position a portion of a fitment. The sterilant supply assembly comprises a steam generating system having a steam supply conduit extending therefrom and a joint mixing conduit coupled with the inlet into the housing of the sterilization chamber, a hydrogen peroxide storing system and a member for metering liquid phase hydrogen peroxide from the hydrogen peroxide storing system into the steam supply conduit for mixing therewith, and, in turn, introduction thereof into the cavity of the sterilization chamber.
1. A sterilization system for use in association with a filler device configured for filling at least one of rigid and flexible containers comprising:
a sterilization chamber having a housing, an inlet into the housing, an outlet from the housing and a product retainer assembly, thereby defining a cavity within which to position a portion of a fitment; and
a sterilant supply assembly comprising
a steam generating system having a steam supply conduit extending therefrom and a joint mixing conduit coupled with the inlet into the housing of the sterilization chamber;
a hydrogen peroxide storing system;
means for metering liquid phase hydrogen peroxide from the hydrogen peroxide storing system into the steam supply conduit for mixing therewith, and, in turn, introduction thereof into the cavity of the sterilization chamber, wherein the means for metering comprises an injector; and
means for isolating the metering means from the steam supply conduit, so as to preclude undesirable temperature elevation within the metering means, wherein the means for isolating further comprises a translating assembly configured for selectively placing the injector in fluid communication with the joint mixing conduit, and a recovery assembly surrounding at least a portion of the metering means, to, in turn, preclude the undesirable release of hydrogen peroxide from the injector upon movement thereof by the translating assembly.
2. The sterilization system of claim 1 , wherein the translating assembly includes an actuator coupled to the metering means.
3. The sterilization system of claim 1 wherein the hydrogen peroxide metering means comprises an injector.
4. The sterilization system of claim 3 wherein the injector is electronically controlled.
5. The sterilization system of claim 1 wherein the metering means includes means for injecting a predetermined amount of hydrogen peroxide a predetermined intervals.
6. The sterilization system of claim 1 further comprising a recovery system comprising:
a conduit coupled to the outlet of the housing; and
a tank coupled to the conduit.
7. The sterilization system of claim 1 wherein the hydrogen stored within the hydrogen peroxide storing system is a solution of approximately 35% hydrogen peroxide.
8. The sterilization system of claim 1 wherein the steam is at a temperature of less than 250° F. and a dwell time is less than 4 seconds.