Freeze Drying with LG-Type Freeze Dryers – High-Efficiency Industrial Lyophilization

Introduction

LG-type freeze dryers are a range of industrial vacuum freeze-drying systems developed by Shenyang Aerospace Xinyang Quick-Frozen Equipment Manufacturing Co., Ltd. They are engineered for food, herbal, pharmaceutical, and nutritional product industries, combining aerospace-level technology with decades of experience in industrial Freeze-drying equipment.

Freeze drying, also called lyophilization, removes moisture from frozen products by sublimation under vacuum, allowing products to retain their original shape, color, texture, flavor, and nutrients. LG-type freeze dryers are designed for precision, high efficiency, and consistent product quality, making them ideal for industrial and export-oriented production.

Key Features of LG-Type Freeze Dryers

• Multiple chamber options: LG-125, LG-200, LG-240, and larger configurations for small to large-scale production

• Radiant heating plates: Ensure even heat distribution across trays for uniform drying

• Advanced vacuum systems: Quickly establish and maintain precise vacuum pressure for optimal sublimation

• Cold traps and condensers: Efficiently capture water vapor to maintain vacuum and improve energy efficiency

• Automated control systems: PLC and PC-based monitoring for temperature, pressure, and process data logging

LG-type freeze dryers can process fruits, vegetables, herbs, prepared meals, pet foods, and nutritional ingredients, providing premium quality freeze-dried products suitable for global markets.

Applications

LG-type freeze dryers are used in:

• Food industry: Freeze-dried fruits (strawberries, blueberries, apples), vegetables (peas, carrots, mushrooms), and ready-to-eat meals

• Herbal and medicinal products: Ginseng, goji berries, herbal powders, and plant extracts

• Pet food and snacks: High-value, lightweight, and shelf-stable products

• Nutraceuticals and supplements: Protein powders, vitamins, and functional foods

Freeze-dried products produced using LG-type dryers retain excellent rehydration, flavor, texture, and nutrients, making them ideal for premium retail, export, and emergency food applications.

Operating Principles

1. Product Preparation
   Materials are cleaned, cut, and pre-treated according to product specifications to ensure uniform freezing and drying.

2. Tray Loading and Freezing
   Frozen products are placed on aluminum alloy trays and stored at –25°C or below in a freezing tunnel or cold storage.

3. Vacuum Freeze Drying
   Frozen trays are transferred to the drying chamber. The vacuum system reduces pressure, while radiant heating plates gently sublimate ice into vapor. Water vapor is captured by the cold trap, ensuring consistent drying and preventing condensation.

4. Completion and Packaging
   Sterile air or nitrogen is introduced to normalize chamber pressure. Dried products are removed, inspected, and packaged. Empty trays are cleaned for the next production cycle.

Advantages of LG-Type Freeze Dryers

• Uniform Drying: Radiant heating plates provide even heat distribution, minimizing product variation

• High Efficiency: Cold traps and vacuum systems optimize water removal and energy consumption

• Product Quality Preservation: Maintains color, flavor, shape, and nutrients

• Scalable Production: Models available from LG-125 to LG-240 and multiple-chamber systems for flexible production capacity

• Automated Control: PLC and PC monitoring ensure stable, repeatable results

• Durable Construction: Stainless steel chambers and high-quality aluminum plates for long-term industrial use

Conclusion

Freeze drying with LG-type freeze dryers provides a reliable, precise, and high-efficiency solution for industrial food, herbal, and nutritional products. These systems ensure premium-quality freeze-dried products with long shelf life, excellent rehydration, and nutrient retention.

With modular chamber options, advanced vacuum technology, radiant heating, and automated controls, LG-type freeze dryers support large-scale industrial production and meet the demands of domestic and international markets.