Nozzle Blanketing
Nozzle blanketing is a technique used to prevent frosting on the dosing nozzle by maintaining a protective layer of pure nitrogen gas at a slightly higher pressure than the surrounding atmosphere. This barrier prevents moisture-laden air from contacting the nozzle during both dosing and standby modes, eliminating frosting.
Challenges with Traditional Nozzle Blanketing
Traditional dosing systems relying on external nitrogen gas face several challenges:
External gas requires extra pressure control circuits, increasing system size and maintenance.
Variations in external gas pressure can affect nozzle blanketing performance.
- Increased Moisture Contamination:
External nitrogen sources are more prone to moisture, reducing nozzle blanketing effectiveness and increasing frosting risk.
Dependence on external nitrogen raises operational costs.
NovoDoser’s Self-Generating GN2 Nozzle Blanketing Solution
The NovoDoser LN2 Dosing System uses self-generating GN2 nozzle blanketing technology to eliminate frosting. It evaporates a controlled amount of liquid nitrogen (LN2) from its internal reservoir to generate nitrogen gas with a dew point of -196°C and moisture content below one-thousandth of a ppb. This GN2 is delivered to the nozzle at a slightly higher pressure than atmospheric pressure, forming a barrier that prevents moisture from reaching the cold nozzle surface, effectively eliminating frost during dosing and standby modes without needing external gas.
Benefits of NovoDoser’s Self-Generating GN2 Nozzle Blanketing Technology
Eliminates the need for external nitrogen gas and complex pressure control circuits, reducing installation and operational complexity.
By using internal LN2, the system ensures steady, moisture-free gas pressure, keeping the nozzle frost-free in all conditions.
- Reduced Downtime and Maintenance
Less need for defrosting, reducing downtime and maintenance costs while extending equipment lifespan.
No frost interference, ensuring precise and consistent dosing, reducing wastage in high-speed production.
- Enhanced Energy Efficiency
The self-generating system operates on existing LN2 pressure and ambient heat, reducing the need for additional gas supply and lowering energy consumption.
Eliminates external nitrogen gas purchases and extra pressure control systems, reducing operational costs and maintenance needs.