Zhongke Duling (Anhui Duling Refrigeration Equipment Co., Ltd.) is a brand in the field of ultra-low temperature storage equipment in China. Its ultra-low temperature refrigerators have the core advantages of covering a wide temperature range of -40 ℃ to -150 ℃, low-energy design, and intelligent management, serving scenarios such as biomedicine, scientific research institutions, and disease control centers.
1、 Core technology breakthroughs and performance advantages
1. Hybrid refrigeration system
-Double stage cascade refrigeration: using environmentally friendly refrigerants (R170/R23) and high-efficiency scroll compressors, it achieves stable operation at extremely low temperatures of -150 ℃, with temperature fluctuations of ≤± 1 ℃ (international first-line level).
-Variable frequency energy-saving technology: Compared with traditional models, it reduces energy consumption by 30% (such as -86 ℃ models with daily power consumption ≤ 18kWh), and has passed the EU ERP energy efficiency A+certification.
2. Intelligent security system
-Triple redundant temperature control: main control chip+mechanical temperature control+cloud monitoring, can maintain -86 ℃ for 48 hours after power failure (optional liquid nitrogen backup module can be extended to 72 hours).
-Abnormal warning network: supports SMS/APP push alarm (temperature deviation, door not closed, voltage abnormality), compatible with laboratory LIMS system integration.
3. Innovation in Materials and Processes
-Vacuum insulation board (VIP): The thermal conductivity of the insulation layer of the box body is ≤ 0.002W/(m · K), which reduces the thickness by 40% compared to traditional polyurethane foam and improves the volume ratio.
-Antibacterial inner liner: Nano silver coating inhibits the growth of mold/microorganisms and meets GMP cleanroom standards.
2、 Comparison between Product Line Matrix and Typical Models
|Series | Temperature Range | Capacity (L) | Core Scenarios | Technical Highlights|
|-------------------|-------------------|---------------|----------------------------------|----------------------------------|
|DL-388C | -40 ℃~-86 ℃ | 380/688 | Hospital vaccine and blood bank storage | Dual independent circulation system with temperature control in separate compartments|
|DL-1500A | -60 ℃~-150 ℃ | 1500 | Biological sample library (millions of samples) | Liquid nitrogen assisted refrigeration, 72 hour ultra long cold insulation|
|DL SmartV | -20 ℃~-86 ℃ | 200~800 | Laboratory small team use | Facial recognition access control+access record tracing|
|DL Portable | -40 ° C~-86 ° C | 50~150 ° C | Field scientific research, emergency epidemic prevention | Dual power supply of DC/solar energy, seismic and anti tilt design|
3、 Industry solutions and scenario adaptation
1. Biomedical research and development
-Cell therapy: Long term preservation of CAR-T cells and stem cells (-150 ℃ deep low temperature to reduce ice crystal damage).
-MRNA vaccine: Low temperature storage of lipid nanoparticle (LNP) raw materials (-80 ℃± 1 ℃ stability verification).
2. Public Health and Disease Control
-National pathogen database: Safe storage of highly pathogenic virus strains (dual door lock+three-level permission management).
-Blood station plasma: -30 ℃ frozen plasma is stored in compliance with the "Technical Operating Procedures for Blood Stations".
3. Agriculture and species conservation
-Endangered species gene bank: ultra-low temperature backup of animal and plant tissues, sperm/eggs (liquid nitrogen tank linkage scheme).
4、 Purchasing Strategy and Competitive Analysis
1. Key parameters for selection
-Sample type: DNA/RNA recommended -80 ℃, live cells require -150 ℃ deep low temperature;
-Space layout: Vertical (saving floor space) vs Horizontal (convenient access).
2. Maintenance and cost optimization
-Defrosting cycle: air-cooled frost free design (DL-1500A) vs manual defrosting (economical);
-Extended warranty service: It is recommended to purchase a 5-year full warranty (covering the core components of the compressor/condenser).
3. Market competitiveness
-Compared to imported brands (Thermo Fisher, Panasonic): 30%~50% lower price, localized service response time<4 hours;
-Compared with domestic competitors (Haier, Zhongke Meiling): Leading in -150 ℃ deep cooling technology patents, AI energy consumption optimization algorithm will be added in 2024 (saving 15% electricity).
5、 Dynamic (upgraded by 2025)
1. Expansion of IoT ecosystem
-Integrate with Huawei HarmonyOS to achieve cross brand device (air conditioning, dehumidifier) collaborative temperature control.
-The blockchain storage function meets the data integrity requirements of FDA 21 CFR Part 11.
