The Portable Cold Food Storage is a mobile cold chain solution engineered for food-safe transportation. It utilizes dual-layer vacuum insulation and a variable-speed compressor to maintain ±1℃ accuracy across -18℃ to 10℃. Constructed with food-grade 304 stainless steel and EPP recycled material, it holds NSF, FDA, and CE certifications. The modular design supports stackable transport with 200L capacity, catering to catering, pharmaceutical, and outdoor sectors as a commercial/consumer cold storage innovation.

1. Core Positioning

The Portable Cold Food Storage is a mobile temperature-controlled unit engineered for last-mile cold chain delivery. It balances professional-grade refrigeration with lightweight portability, serving catering, fresh produce e-commerce, pharmaceutical logistics, and outdoor use cases.

2. Technological Innovation

Features a dual-circuit refrigeration system with primary cooling for rapid temperature pull-down and secondary circuits for sustained stability. Vacuum insulation panels and PCM technology enable 12-hour holdover during power outages. A smart MCU samples temperature 10 times/second, dynamically adjusting power via PID algorithms.

3. User-Centric Design

Gas-strut hinges allow one-handed door operation at any angle (0-180°). Modular rail-mounted shelves enable customizable layouts. Heavy-duty wheels and telescopic handle support 150kg loads. The control panel includes Braille labels and voice guidance for accessibility.

4. Certification Compliance

Complies with NSF/ANSI 51 (Food Equipment), CE-LVD (Low Voltage), and WHO pharmaceutical cold chain guidelines. Passed -40℃ to 70℃ cyclic corrosion tests (GB/T 2423). Includes calibration certificates and third-party test reports.

5. Scenario-Based Solutions

Catering Delivery: Spill-resistant seals pass ISO 1496 vibration tests, preventing soup leakage
Pharma Transport: Optional GSP-compliant loggers with ≥5-year cloud data retention
Outdoor Adventures: Solar-compatible design extends runtime to 72 hours in extreme conditions

1. Temperature Control System

Utilizes dual-layer vacuum insulation and a variable-speed compressor to achieve precise temperature control between -18℃ and 10℃, with fluctuations limited to ±1℃. The rapid cooling function reaches set temperatures within 30 minutes under high-ambient conditions, while adaptive algorithms optimize energy consumption.

2. Insulation Performance

Constructed with high-density EPP recycled material and food-grade 304 stainless steel, combined with airtight sealing, the unit blocks external heat transfer. Lab tests confirm internal temperature stability within a 3℃ drift over 48 hours at full capacity.

3. Power & Energy Efficiency

Features a multi-mode power supply compatible with 220V AC, 12V DC, and solar expansion ports. An intelligent power system adjusts consumption based on load, achieving daily energy use below 1.2kW·h.

4. Safety & Compliance

Complies with NSF/ANSI 51, FDA CFR 21, and CE-LVD/EMC certifications, meeting stringent safety standards for food and medical applications. UV-resistant engineering plastic housing allows direct food contact.

5. Smart Connectivity

Integrated Bluetooth 5.0 module enables real-time temperature monitoring, alerts, and data logging via a dedicated app. Multi-tier access control and audit trails support HACCP compliance.

6. Environmental Adaptability

IP65-rated enclosure withstands water jets and dust ingress, operating in -25℃ to 40℃ extremes. Uses fluorine-free refrigerant compliant with RoHS directives.

7. Noise Reduction

Aerodynamic airflow optimization and vibration-damped compressor mounting reduce noise to below 45dB(A), equivalent to conversational speech levels.

8. Modular Expandability

Standardized interfaces support upgrades like medical-grade GSP modules and solar kits. Tool-free quick-release fasteners simplify internal cleaning and component replacement.

Initial Setup: Power on after 24hrs stabilization, calibrate via APP

Cleaning: Wipe interior with mild detergent; avoid panel drenching

Battery Care: Monthly full discharge cycle; prevent deep discharge storage

Troubleshooting:

E1 Code: Sensor error—contact support if persists after reboot

E3 Code: Compressor overload—check ventilation

Storage: Leave door ajar in -5℃ to 35℃ dry environment