4×LG-200 Vacuum Freeze-drying equipment

Product Overview

The 4×LG-200 Vacuum freeze-drying equipment is a large-scale industrial freeze-drying system designed for continuous and high-capacity food processing. The system consists of four LG-200 freeze-drying chambers, combined with advanced vacuum, refrigeration, heating, and automatic control systems to ensure stable operation and efficient moisture removal.

Freeze drying, also known as lyophilization, is a dehydration process in which frozen materials are dried under high vacuum conditions. The ice inside the product sublimates directly into water vapor without passing through the liquid phase. This process helps preserve the original shape, color, aroma, nutritional value, and structure of food products.

The 4×LG-200 system is suitable for large food processing factories that require high production efficiency, consistent product quality, and reliable long-term operation.

Main Technical Parameters

Typical specifications of the 4×LG-200 freeze-drying equipment include:

• Drying chamber model: LG-200

• Number of drying chambers: 4 units

• Nominal drying area: approx. 200 m² per chamber

• Heating method: Radiant heating plate system

• Heating plate material: Aluminum alloy with high thermal conductivity

• Heating temperature range: Ambient temperature to 120°C

• Cold trap temperature: –30°C to –40°C

• Operating vacuum pressure: 30–133 Pa

• Vacuum pumping time: about 15–20 minutes from atmospheric pressure to 1 Torr

• Typical drying cycle: 12–24 hours depending on the product

• Loading capacity: varies according to product type and moisture content

The equipment features efficient water vapor capture, stable vacuum control, and precise temperature regulation, which are essential for producing high-quality freeze-dried products.

Application Scenarios

The 4×LG-200 vacuum Freeze Dryer is widely used in many food processing and agricultural industries, including:

• Freeze-dried fruits: strawberries, bananas, apples, blueberries

• Freeze-dried vegetables: peas, corn, carrots, mushrooms

• Instant foods and ready meals

• Pet food and premium snacks

• Nutritional and health foods

• Plant extracts and herbal products

Freeze-dried products are lightweight, have a long shelf life, and can be easily rehydrated, making them ideal for export markets, outdoor foods, emergency rations, and premium snack products.

Operating Instructions

The typical working process of the 4×LG-200 freeze-drying equipment includes the following steps:

1. Raw Material Preparation
   Fresh materials are cleaned, cut, and processed according to product specifications.

2. Tray Loading and Freezing
   The prepared materials are evenly spread onto trays and placed on product carts. The trays are then transferred to a freezing tunnel where the temperature drops to –25°C or lower.

3. Vacuum Freeze Drying Process
   The frozen carts are loaded into the drying chamber. After sealing the door, the vacuum pump starts and the condenser temperature decreases. Under low pressure, ice in the product sublimates into vapor and is captured by the cold trap.

4. Completion and Unloading
   After drying is finished, sterile air or nitrogen is introduced to restore atmospheric pressure. The chamber door is opened and the dried products are removed for packaging.

Frequently Asked Questions (FAQ)

1. What are the advantages of vacuum freeze drying?
Freeze drying maintains the product’s natural flavor, color, and nutritional value while providing excellent rehydration capability.

2. How long does the freeze-drying process take?
The drying cycle typically lasts 12–24 hours, depending on product thickness, moisture content, and drying parameters.

3. Is the system suitable for large-scale production?
Yes. The four-chamber configuration allows flexible production scheduling and higher processing capacity.

4. What maintenance is required?
Regular inspection of the vacuum system, refrigeration units, and heating plates helps ensure stable operation and long equipment life.

The 4×LG-200 vacuum freeze-drying equipment offers a reliable solution for large-scale freeze-dried food production, combining advanced technology, energy-efficient design, and intelligent control systems to meet the growing global demand for high-quality freeze-dried products.