Scala Unvelis Next-Gen GM Cryo-cooler Liquid Nitrogen Generator: Smarter, Purer, Quieter

In the global market for on site liquid nitrogen generators, the GM (Gifford-McMahon) cryo-cooler is the dominant technology, accounting for over 95% of sales. Prized for its stable refrigeration performance based on the principle of gas adiabatic expansion, GM cryo-coolers are essential in critical fields like NMR, quantum communication, medical care and semiconductors. Building on over a decade of cryogenic industry experience, Hangzhou Scala Filtration Technology Co., Ltd. has now launched a new liquid nitrogen generator with GM cryo-cooler technology. This new liquid nitrogen generator incorporates multiple technological innovations that significantly advance the performance and intelligence of integrated liquid nitrogen systems.

GM cryo-coolers use helium compressors to drive cold head, creating the ultra-low temperatures needed for gas liquefaction, and have proven reliable over decades of application, making them the only type of cryo-cooler that is mass-produced. A major challenge to use make compact liquid nitrogen generator with this technology, however, has been integrating all necessary components - an air compressor, nitrogen generator, and a large storage tank - into a single, compact unit without compromising on low noise, reliability and easy maintenance. Scala's new liquid nitrogen generator is designed to meet these challenges head-on. With a daily output of 20 to 50 liters, it offers a versatile solution adaptable to various user scenarios.

The new product achieves comprehensive upgrades in core performance and user experience, highlighted by six key technical features:

The 20-liter/day model features a built-in 100L vacuum-insulated Dewar tank, significantly exceeding the storage capacity of similar equipment on the market. Combined with an intelligent liquid level control function enabling automatic start/stop, it ensures a continuous supply of liquid nitrogen without the need for an external storage tank.

Innovatively employs a touchscreen one-touch dispensing mode, allowing liquid nitorogen dispensing without opening the cabinet or rotating valves manually. This function also supports timed automatic shut-off. The liquid nitrogen outlet retains traditional manual valve as a backup for quick cut-off in emergencies, balancing convenience and safety.

Unlike traditional liquid nitrogen generators which cannot read the operating parameters of the helium compressor, this new model can self-diagnose parameters like temperature and pressure, preventing the generator from operating with underlying issues.

Utilizing a built-in nitrogen analyzer and Scala's self-developed PSA (Pressure Swing Adsorption) nitrogen generator, it elevates liquid nitrogen purity from the traditional upper limit of 99% to a higher purity of 99.5%-99.9%, with a maximum achievable purity of 99.995%. This meets the demands of high-precision scenarios like medical sample storage and NMR.

Coming standard with a Siemens WiFi module and 4G expansion, the system can connect to the Siemens cloud-based monitoring system within minutes for remote connection, enabling full digital management of monitoring, fault diagnosis, and program updates.

Incorporating a built-in low-noise oil-free air compressor and a low-vibration GM cryo-cooler complemented by double-layer panel sound insulation and multiple shock absorption material, the noise at running is tested below 60 decibels, meeting the requirements of quiet environments in laboratories.

The generator is equipped with a temperature and humidity monitoring system, which provides real-time warnings of environmental anomalies to prevent potential equipment damage. Rapid, altitude-based parameter adjustment further guarantees stable operation across diverse regions everywhere from the plateau to coastal areas.

Founded a manufacturer in 2013 focused on gas generation equipment R&D, Scala has established a service network domestic and multiple countries and regions from Latino America to Mongolia. The new offering extends beyond inheriting the core benefits of the GM cryo-cooler technology; its modular structural design serves to prolong maintenance cycles significantly. Integrated with low-energy-consumption technology ensuring 100% nitrogen liquefaction, it provides a plug-and-play, on-site liquid nitrogen solution for fields including medical, biology, and semiconductors. This advancement is poised to further elevate our competitiveness in the rapidly expanding global marketplace. With this intelligent new product, Scala provides a more efficient and reliable answer to the cryogenic needs of the scientific and industrial sectors.