The Liquid Nitrogen immersion bath is used to coat a layer of water-fruit based juice on an ice cream substrate. This equipment works in combination with an ice cream filler line. The Liquid nitrogen immersion bath can also be used for rapid freezing of biomedical materials, or pharmaceutical products and many other applications.
Wide range of sizes available
The Dohmeyer LIN Bath is a high-capacity cryogenic system engineered for rapid thermal exchange through direct immersion in liquid nitrogen (LIN) at atmospheric pressure. In industrial food processing, this unit is primarily utilized to apply a precise water-fruitbased juice coating onto ice cream substrates, functioning as a critical component in automated production lines. By reaching temperatures as low as -195.8°C,the immersion process facilitates nearly instantaneous freezing, allowing for either surface crust-freezing or deep-core solidification depending on the residence time. This ultra-fast cooling capability is essential for high-speed manufacturing environments where maintaining high throughput is a priority. Beyond the dessert industry, the system is increasingly deployed for the rapid preservation of biomedical materials and pharmaceutical products, where rapid temperature reduction is vital to maintaining molecular integrity. This robust production capability ensures that manufacturers can meet demanding output targets without compromising the physical or sensory qualities of the final product.
Achieving consistent results in cryogenic immersion requires precise control over the fluid dynamics within the bath. The Dohmeyer LIN Bath is engineered with a focus on wave-free operation, which ensures that the liquid surface remains perfectly calm during the immersion cycle. This stability prevents uneven coating and guarantees that every product receives a uniform layer of ice or cryogen exposure. To further enhance operational efficiency, the system incorporates advanced nitrogen monitoring to maintain a constant cryogen level throughout the entire production shift. This precise dosing eliminates cryogen waste and prevents the fluctuations in temperature that often lead to batch inconsistencies. By optimizing the thermal exchange between the liquid nitrogen and the product, the system reduces the overall consumption of cryogen per unit. This efficiency-first approach result in lower operational costs (OPEX) and a more sustainable production cycle for facilities operating 24/7.
Operating with ultra-low temperature liquid nitrogen necessitates a rigorous approach to operator protection and environmental control. The Dohmeyer LIN Bath features a specialized external container designed to efficiently collect and extract all gaseous nitrogen generated during the freezing process. This proactive gas management prevents the accumulation of nitrogen vapors in the production hall, maintaining a safe atmosphere for personnel. Furthermore, the unit is equipped with a fast nitrogen purge system, allowing for the rapid and safe discharging of all remaining liquid nitrogen once the process is complete. This ensures that maintenance and sanitation can begin immediately without the risks associated with residual cryogens. These features, combined with Dohmeyer's commitment to building equipment with integrated safety loops and emergency stop protocols, provide a secure foundation for any high-pressure industrial environment. By mitigating risks such as cold burns and oxygen displacement, plant managers can confidently integrate cryogenic immersion into their facilities.
In modern food and pharmaceutical processing, equipment must adhere to the highest sanitary standards to prevent microbial growth and cross-contamination. The Dohmeyer LIN Bath is built following a strict "clean-by-design" philosophy, utilizing a fully welded, open-structure construction. This design choice is critical as it entirely eliminates internal threads, sharp corners, and crevices that typically act as bacteriological traps in conventional machinery. Because the unit features no hidden gaskets or complex internal geometries, operators have unimpeded access to all surfaces during sanitation. This transparency facilitates rapid and thorough washdowns, significantly reducing cleaning downtime and the consumption of aggressive detergents. The use of high-grade stainless steel ensures longevity and resistance to corrosion even when subjected to dailyhigh-pressure cleaning. This uncompromising hygienic architecture guarantees a pristine production environment, helping manufacturers comply with international food safety regulations and avoid the devastating costs of product recalls.
Modern manufacturing demands equipment that can adapt to diverse product formats and evolving facility requirements. The Dohmeyer LIN Bath is designed for seamless integration with a wide range of stick ice cream lines and is compatible with multiple OEM solutions. Beyond its primary food applications, the system is highly versatile and has been successfully tested with biomedical materials and pharmaceutical products. It is also utilized in heavy industrial tasks such as cryofracture, deburring, and metal shrink-fitting, where liquid nitrogen immersion is used to induce extreme brittleness. Dohmeyer provides customized dimensions to meet the specific spatial constraints of any production plant, ensuring that the footprint is maximized for efficiency. Whether the requirement is for a short immersion to achieve a protective ice glaze or a full freeze down to cryogenic temperatures, the system can be configured to meet the precise thermodynamic needs of the application. This adaptability makes the LIN Bath a future-proof investment for companies operating across multiple high-tech sectors.
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