Liquid Nitrogen LN2 Backup system for Haier cryogenic freezers

The Haier Biomedical LN₂ Backup Cooling System is a high-performance safety device designed to provide emergency backup cooling for ultra-low temperature (ULT) freezers. In the event of a power outage or temperature excursion, this system automatically activates to inject liquid nitrogen into the freezer chamber to maintain internal temperatures within critical limits.

Its independent operation, interlocked safety controls, and battery-powered functionality ensure sample protection and freezer continuity in research labs, hospitals, biobanks, and pharmaceutical storage facilities where temperature-critical materials must be preserved at all costs.

Temperature Range: –90°C to –135°C

Refrigerant: Liquid Nitrogen (LN₂)

Cabinet Type: Horizontal

Power Supply: 115/60; 208–230/60; 220–240/50 V/Hz

Certification: CE, UL

Backup Power: Rechargeable battery-operated system

Key Features

❄️ Automated LN₂ Injection for Emergency Cooling

• Activates automatically when freezer temperature reaches high alarm set point or power failure occurs
• Delivers LN₂ directly into the freezer chamber to preserve sample integrity

🔒 Safety Interlocks and Battery Protection

• Door interlock design stops LN₂ injection when the freezer door is opened, ensuring operator safety
• Built-in protection circuit prevents battery overcharging, extending device lifespan

⚠️ Alarm and Monitoring System

• Low battery alarm ensures backup readiness
• Sensor error alarm enhances system reliability and responsiveness

🧳 Compact, Lightweight, and Easy to Install

• Portable design allows for installation on top of any ULT freezer
• Requires minimal space and maintenance

Use Cases

🧬 Biorepositories & Biobanks

• Ensures the preservation of irreplaceable biological samples during power failures

🏥 Hospitals and Blood Banks

• Backup for ULT freezers storing plasma, stem cells, or critical patient materials

🔬 Pharmaceutical & Research Laboratories

• Maintains storage temperature of vaccines, biologics, and reference materials

📉 Disaster Prevention & Risk Mitigation

• Provides peace of mind and risk control in power outage-prone regions or critical facilities

Technical Specifications

Unique Advantages of the LN₂ Backup System

• ✅ Independent cooling solution for ULT freezers
• ✅ Battery-operated for uninterrupted protection during power loss
• ✅ Smart control with automated injection and user-friendly safety functions
• ✅ Certified to global safety standards (CE, UL)
• ✅ Easily deployable and compatible with a wide range of ULT freezers

For Research, Medical, Biobanking, and Cold Chain Applications.