The HFD-20 Automatic Small Freeze Drying Machine is a vacuum freeze dryer . It combines freezing, vacuum drying, shelf heating and automatic process control for small-batch food processing, product development and laboratory applications.
Technical Specifications
HFD Series Specifications
|
Parameter |
HFD-9 |
HFD-10 |
HFD-18 |
HFD-20 |
HFD-25 |
|
Freeze-Drying Area |
0.9 m² |
1.0 m² |
1.8 m² |
2.0 m² |
2.5 m² |
|
Processing Capacity |
12–14 kg/batch |
14–15 kg/batch |
15–20 kg/batch |
25–26 kg/batch |
29–30 kg/batch |
|
Tray Size |
200 × 425 mm |
309 × 780 mm |
270 × 780 mm |
390 × 900 mm |
390 × 900 mm |
|
Number of Trays |
10 pcs |
4 pcs |
7 pcs |
6 pcs |
7 pcs |
|
Layer Spacing |
35 mm |
65 mm |
40 mm |
40 mm |
48 mm |
|
Water Capture Capacity |
12 kg/24 h |
12 kg/24 h |
18 kg/24 h |
26 kg/24 h |
30 kg/24 h |
|
Cold Trap Temperature |
-55°C |
-55°C |
-55°C |
-55°C |
-55°C |
|
Ultimate Vacuum |
<2 Pa |
<2 Pa |
<2 Pa |
<2 Pa |
<2 Pa |
|
Overall Power |
2.3 kW |
3.0 kW |
3.0 kW |
4.5 kW |
4.5 kW |
Common Electrical Configuration
|
Item |
Specification |
|
Standard Power Supply |
220 V / 50 Hz |
|
Optional Power Supply |
110 V or 380 V |
|
Main Material |
SUS304 stainless steel |
|
Control System |
PLC + touchscreen |
|
HFD-20 Dimensions |
850 × 1140 × 1620 mm |
|
HFD-20 Weight |
230 kg |
Application Scenarios & Processable Materials
Commercial Pet Treats: Utilized by small-to-medium producers for freeze-drying raw meat chunks, organs, and mixed recipe pet snacks.
Specialty Foods & Produce: Applied in dehydrating seasonal fruits, vegetables, and prepared meal ingredients while retaining original shape.
Botanical & Herbal Processing: Used for drying medicinal herbs, floral samples, and temperature-sensitive plant extracts without active ingredient destruction.
Laboratory & Biological Samples: Suitable for processing biological specimens and research materials requiring stable moisture removal.
Freeze-Drying Process & Performance
Sublimation Mechanism: Operates via direct phase transition where ice converts straight into vapor under ultra-low pressure, bypassing the liquid phase.
Structure and Nutrient Retention: Preserves cellular walls, original food color, and heat-sensitive components like vitamins through low-temperature processing.
Batch Performance: Actual batch output depends on material moisture and loading conditions, with a rated capacity of 25–26 kg/batch and water capture of 26 kg/24 h.
Core Machine Construction
Chamber Sanitation: Utilizes smooth food-grade 304 stainless steel interior walls that resist corrosion and simplify cleaning between production cycles.
Tray Thermal Transfer: Flat metal trays ensure direct thermal conduction from the heated shelves into high-moisture products.
Loading Clearance: The 40 mm vertical gap between shelves accommodates bulky items such as thick meat slices and whole fruits.
Air-Cooled Operation: Employs an ambient air-cooling design, removing the requirement for an external water cooling loop or plumbing installation.
Refrigeration & Condenser System
Cold Trap Temperature: Reaches a minimum condenser temperature of -55°C to freeze vapor molecules rapidly.
Water Capture Rate: Rated to trap up to 26 kg of water vapor per 24-hour operational cycle.
Vapor Condensation: Sublimated moisture travels from the main chamber and locks onto the internal cold trap coils as solid ice.
Vacuum Integrity Support: Maintains low condenser temperatures to prevent moisture back-streaming and protect the vacuum pump efficiency.
Quality Control & Factory Testing
Factory Inspection Reports: Every unit undergoes pre-shipment mechanical and electrical testing with inspection documentation provided.
Standardized Warranty: Backed by a 1-year manufacturer warranty covering core functional components.
Operational Video Verification: Factory test run videos can be supplied prior to dispatch to confirm system pressure and temperature metrics.
Compliance Standards: Fabricated using industrial-grade electrical components and certified raw materials meeting baseline export specifications.
FAQ
Q: What installation conditions are required?
A: Requirements depend on the selected model and electrical configuration and can be confirmed before shipment.
Q: What accessories are included?
A: Standard accessories vary by model. The detailed list is provided with the quotation.
Q: Can processing parameters be adjusted for different products?
A: Yes. Parameters can be adjusted based on product characteristics, moisture content, and loading conditions.
Q: Is customization available?
A: Options may be available for electrical supply, trays, and other configuration requirements.
Q: What information is needed for a quotation?
A: Product type, batch size, expected throughput, power supply, and specific configuration requirements.
Q: How long is the lead time?
A: It depends on the model, configuration, and production schedule. The confirmed lead time is stated in the order.
Q: What technical documents are available?
A: Manuals, specifications, and inspection documents can be supplied according to order requirements.
Q: How should buyers select an HFD model?
A: Consider batch size, product moisture, loading method, installation space, and available power supply.
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