FANQUN Vacuum Freeze Dryer
The FanQun freeze dryer has precise temperature control up to ±0.5℃, a water capture efficiency of up to 99%, and ensures the integrity of the product.
FanQun vacuum freeze dryers can keep the color, taste, and structure of products intact to the extreme while drying them.
- The maintenance frequency of the vacuum pump used in the vacuum freeze dryer is every 800 hours, reducing the maintenance cost by 80%.
- The FanQun freeze dryer dries materials with uniform heating within ±1℃.
- Our plate layer adopts graphene heat conduction plates, which can transfer heat sources more quickly during the heating process.
- The FanQun freeze dryer is equipped with an integrated vacuum system. It is easy to use and makes little noise.
- It is equipped with an AI automated operation program and can be connected to a mobile phone or computer for real-time remote operation.
LSDGJ Series Vacuum Freeze Dryer
The machine is built on vacuum freeze drying principle, it has compact conformation, convenient maintain, low price, full automatic control and convenient operation. Its freeze-dry curve can be set up automatically, and its multicolor liquid crystal display can record all parameters. Its working condition is clear at a glance, so that the trouble of setting freeze-dry curve can be avoided. Operator only needs press the button to start, and tail off then discharge port by indicating of pilot lamp; it has complete function, call off deepfreeze and freeze-dry done without any setup.
It need not any matching installation( steam boiler, freeze tower etc.), just three-phase electricity can made it work independently; it has super strength capacity to adapt ambient temperature, and can work as usual at high temperature in 40℃; its design is unique, cycle of operation is short, energy consumption is low. It is profitable for freeze-dry of low price raw materials.
Features of LSDGJ Series Vacuum Freeze Dryer
Super Capacity to Adapt to Ambient Temperature: It has super capacity to adapt to ambient temperature, and can work at high temperature in 40℃, which changed the freeze dryer’s work condition, such as high demands to ambient temperature and can not work in summer as usual.
Original Man-Made Intelligent Automatic Control, Convenient Monitor Interface: It adopts technical microcomputer control; multicolor liquid crystal display and record all parameters. Its working condition is clear at a glance, the record data can be deposited several months to one and a half year, and the data also can be copied to deposit fora long time. It has original manmade intelligent automatic control, and the freeze-dry curve can be set up automatically, so that the trouble of setting freeze-dry curve can be avoided. It gets rid of the influence to process of freeze-dry, which is caused by forced filling rate and changes of ambient temperature.
Supernatural Power Arrangement: Substantial energy saving effect
Supernatural power arrangement, compare with the other freeze dryer, the same processing capability, but our equipment just need a half or lower power arrangement, and it need not any matching installation (steam boiler, freeze tower etc.), Just three-phase electricity can made it work autocoprally. The drying time is short commonly, it spend 8~16 hours (according to the property of raw material). In contrast, it has obvious and concrete saving energy effect.Compact Construction: Complete function has compact construction, its cold trap and dryer box is an organic whole, air-blast cooling tower the temperature quickly and equably. Its heating plate adopts special medium, which ensure the transfer of heat; radiation heating ensure homogeneity of heat and controllability of temperature. Its setting, maintenance, and operation is convenient operator only need press the button to start, and tail off then discharge port by indicating of pilot lamp, it has complete function, call off deepfreeze and freeze-dry done without any setup.
Suitable for freezing Fruits and Vegetables, High efficiency and easy operating control, Eco-friendly support and explosion-proofed exterior.
Screen manual control and indicator for more evident baking progress, Heat temperature can drop to -50 with great results.
Has controlled temperature with the heating method being electric. Has constant and automatic processing for thick products.
Commonly used in industrial food processing and chemical drying. Perfect for small businesses as it has low consumption and high productivity.
Eco-friendly machine with environmental friendly advantage, easy to operate and continuous drying with high efficiency.
Different level temperature control and size is available for home use or commercial use.
Manufactured with durable materials that withstands high temperature for moisture control with no chemicals involved for processing.
Efficient heating method using electricity, Meat processing and easy to operate.
- Our Factory
- Technical Parameters
- The Performance Test
| Model | LSDGJ-0.5A | LSDGJ-1A | LSDGJ-5A | LSDGJ-10A | LSDGJ-20A |
| Control | Microcomputer automatic, freeze-drying curve self-tuning, color LCD display, record | ||||
| Working style | quick-freeze or freeze dry | ||||
| Body material | 304 stainless steel | ||||
| Drying area | 0.5 m² | 1 m² | 5 m² | 10 m² | 20 m² |
| Charge amount | 5 kg | 10 kg | 50 kg | 100 kg | 200 kg |
| Tray size | 300/400/25 | 300/500/25 | 600/800/25 | 600/1000/25 | 600/1000/25 |
| Number of tray | 5 | 7 | 12 | 17 | 34 |
| Tray type | Stainless steel dish or Stainless steel net dish | ||||
| Shell number | 6 | 8 | 13 | 18 | 36 |
| Shell Temp. | -35~120°C | ||||
| Shell medium | Low-temperature silicone oil | ||||
| Water Getting | 5 kg | 10 kg | 50 kg | 100 kg | 200 kg |
| Vacuum pump | Screw slice pump | ||||
| Vacuum degree | ≤130pa | ||||
| Ultimate vacuum | <10pa | ||||
| Defrosting | Hot water spray | ||||
| Compressor | Inlet whole sealing | Hall sealing | |||
| Cool water stream | No need | ||||
| Power | Single or three phase | Three phase | |||
| Working Temp. | ≤40°C | ||||
| Rate power | 5 kW | 6 kW | 16 kW | 25 kW | 40 kW |
| Working period | 12 hours quick freeze and freeze dry | ||||
| Spinach | 1.39° electricity/kg H₂O | ||||
| Water | ≤3° electricity/kg H₂O | ||||
The comparison between Fanqun lyophilizer and other lyophilizer (energy savings comparison table)
| Brand | Specification (m²) | Power (kw) | Celostrum lyophilized Time(h) | Lyophilized Royal Jelly Time(h) | Sheep placenta block Time (h) |
| Fanqun lyophilizer | 5 | 16 | 13 | 14 | 12 |
| Others | 5 | 32 | 24 | 28 | 48 |
LSDGJ-5A type 50 kg spinach the performance of the lyophilized test
| Loaded material temperature (kg) | Quick freeze time (h) | Drying time (h) | Defrost time, etc.(h) | Dry spinach (kg) | Total anhydrate (kg) | Total power consumption (Degrees) | Unit energy consumption capacity (kgH₂O) |
| 50 | 1 | 7 | 1 | 7.5 | 42.5 | 59 | 1.39 |
LSDGJ-5A type 50 kg water lyophilized test machine performance
| Tray number | Water amount (kg) | Water temperature in tray (°C) | Quick freeze time (h) | Freeze sublimation time (h) | Defrost time, etc. (h) | Total power consumption (Degrees) | Unit energy consumption capacity (kgH₂O) |
| 12 | 4.2 | 10 | 1 | 3 | 8 | 59 | 2.56 |
What is a vacuum freeze dryer
A vacuum freeze dryer, also known as a freeze dryer, is a machine specifically designed for dehydrating products. A freeze dryer can quickly evaporate the moisture in the product you want to dry into gas, thereby preserving the product’s odor, color, and structure. After adding water again, the product can still return to its original state.
As a result, this freeze-drying technology has been widely used in the field of drying high-quality products with strict requirements. Whether it is a household freeze dryer, a laboratory for preserving bacterial strains, or a chemical plant for drying materials, vacuum freeze dryers can handle all these tasks with ease.
How does a freeze-dryer work
The drying process of a vacuum freeze dryer is mainly carried out in three stages:
Stage 1-Frozen Products
Your materials will be placed in the chamber of the freeze dryer and quickly frozen by the compressor, condenser, refrigerant, and other components inside the machine. If you want to freeze some highly heat-sensitive materials, such as living cells, we will also provide liquid nitrogen. You can pre-freeze the materials with liquid nitrogen in advance and then place them in the freezer chamber. This step can reduce your material temperature to between -50℃ and -80℃. Small products can be dried within a few hours, while large ones may take you several days to dry.
Might you be worried that too low a temperature could damage the structure of your materials? I think the FanQun freeze dryer can completely dispel your doubts. The cooling rate of the vacuum freeze dryer we made is over 100℃/min. In such an extremely rapid freezing environment, the water molecules in the material have no time to crystallize into large ice crystals. The moisture in your materials will aggregate into countless small ice crystals, and these small ice crystals cause almost no mechanical damage to your materials. It can be said that the freeze-dryers we produce are high-end machines specifically designed to solve the drying problem of such heat-sensitive materials
Phase 2-Sublimation Drying
After the material freezes, the vacuum pump will start to draw in air from the drying chamber, creating a completely vacuum environment for the material. Meanwhile, the heating system raises the temperature. As the freeze dryer vacuum pump continuously draws air outward, the indoor air pressure will gradually decrease. Under extremely low-pressure conditions, frozen solid ice crystals directly skip the liquid water stage, sublimate into water vapor, and are then sucked away by the vacuum pump.
Stage 3-Analysis of Drying
Due to the fact that some water molecules are closely combined with the material structure, a single drying process often cannot completely ensure the complete evaporation of moisture. Therefore, after the sublimation drying is completed, we also add another layer of double protection for you – desorption drying. The vacuum pump used in the freeze dryer will keep working, constantly reducing the pressure inside the chamber. Meanwhile, the temperature control system will slowly increase the temperature to completely remove the water molecules from the material.
One thing I need to inform you of is that heating up will not damage the structure and activity of your materials. Under extremely low pressure, the boiling point of water is only in the teens. This means that we can dry your product in an environment of around ten degrees. In addition, our freeze dryer can also adjust the temperature control by itself according to the category of your products. So whether you are in the vegetable food business or the biopharmaceutical industry, you can rest assured in choosing QunFan freeze dryers. We will take every detail into consideration for you and provide you with the ultimate service.
What are the features of vacuum freeze dryers
Low temperature preservation
The vacuum freeze dryer can sublimate the moisture in your materials at extremely low temperatures. Whether you are drying vaccines or food, it will not damage the activity of your materials. It can retain over 90% of the nutrients in food.
Complete structure
When the vacuum freezer dries, the speed is extremely fast. The freezing process will form extremely fine ice crystals in the middle of your materials. The cellular structure of the material will not be expanded and still retains its original form. If you pay more attention to the integrity of the material’s form, our vacuum freeze dryer will be a good choice
The material recovers upon contact with water
The materials dried by the FanQun freeze dryer can retain their original form and activity, with only the moisture lost. You can restore the product to its original state completely by adding water. For instance, instant coffee powder is made by a freeze dryer and can be enjoyed simply by adding water.
The product is convenient for transportation
The weight of the products produced by the freeze dryer will be greatly reduced, which can greatly facilitate your transportation process.
The product has a long shelf life
The traditional way we extend the shelf life of items is often to add preservatives. Freeze-drying technology can extend the shelf life of your products at room temperature without preservatives. Healthier and more efficient.
Wide adaptability of materials
Whether you are dealing with liquids, solids, or powders, freeze dryers can handle them all.
Environmental protection and energy conservation
Compared with thermal drying, freeze-drying does not require high-temperature heating and is more energy-efficient. Moreover, the freeze dryer does not emit sewage or waste gas, and is also very friendly to the environment.
Different types of freeze-dryers
According to the size of the freeze dryer and the different scenarios it is suitable for, we classify them into three categories:
Small freeze dryer
It occupies a small area
The processing capacity of small vacuum freeze dryers is relatively small, usually ranging from 1 to 20 liters. Its floor area is relatively compact, and the minimum can be controlled within 1 square meter. You will save a lot of effort during the transportation process.
Simple operation
Small-scale freeze dryers use compressors for refrigeration and are mostly benchtop or vertical freeze dryers. The structure is relatively simple. You can operate it by referring to the manual.
Save energy consumption
The small freeze dryer also supports manual or semi-automatic operation modes and can be started or stopped quickly. This will save a lot of energy consumption.
It should be noted that the volume of this type of small-scale freeze dryer is limited and its continuous working capacity is relatively weak. The degree of automation is also relatively low, so you need to pay more attention to monitoring to ensure the best drying effect.
If you are using a laboratory freeze dryer or a household freeze dryer. In these scenarios, if you only need to handle small batches of materials, then small freeze-dryers would be more cost-effective.
Medium freeze dryer
Medium processing capacity
The processing capacity of medium-sized freeze dryers is moderate, with each processing session approximately ranging from 20 to 200 liters.
More efficient
The medium freeze dryer offers two options for you to choose from: dual-compressor refrigeration or liquid nitrogen-assisted refrigeration. With the addition of a pre-freezing stage, this will significantly enhance your freezing efficiency in the early stage.
Programmatic operation
Medium-sized freeze dryers mostly adopt PLC control systems and can also control temperature in different zones, enabling you to achieve programmed operation
Continuous operation capacity
Compared with a small freeze dryer machine, medium freeze dryers have a stronger continuous operation capacity. You won’t have to stay by the machine all the time and keep an eye on it.
If you want to dry a batch of materials in bulk, you can choose a medium freeze dryer. Remember to stabilize the power supply and reserve sufficient heat dissipation space for the freeze dryer.
Large freeze dryer
Large processing capacity
Large-scale freeze-dryers have a large processing capacity, with a single processing time of over 200 liters.
More efficient
The large-scale freeze dryer offers you two options for refrigeration: multi-stage compressor refrigeration or liquid nitrogen circulation refrigeration. It is more efficient than medium-sized freeze-dryers.
Remote operation
Most large freeze-dryers are remotely operated and adopt a modular design. Integrated automatic loading and unloading system. You can operate the machine while sitting in the office.
Save energy consumption
Large freeze dryers can process a large amount of materials at one time, and on average, their unit energy consumption is very low.
Continuous operation capacity
Supports continuous operation and saves manpower.
However, large-scale freeze-dryers have a high initial investment cost and are more troublesome to maintain.
If you are buying a freeze dryer for large factories, such as chemical plants, aerospace plants, or pharmaceutical factory production, you can choose a large freeze dryer.
How to use a freeze dryer
The following is a user guide suitable for most freeze-dryer specifications:
Prepare materials
You need to select materials suitable for freeze-drying, such as solutions, slurries, or small solid pieces. If it is a liquid, it should be aliquoted in a dedicated container with a thickness controlled at 3 to 10 millimeters to facilitate sublimation. Check whether the materials contain volatile solvents or strong acidic components, as these substances may damage the equipment.
Load into the drying chamber
Open the door of the drying chamber and place the trays holding the materials steadily on the shelves. Materials must not be in close contact with the wall of the silo or the sensor probe. Count the number of pallets and confirm that the loading volume does not exceed the rated capacity of the equipment. Close the warehouse door tightly and check whether the sealing strip is intact.
Start the freezing program
Set the target temperature for the freezing stage (usually -40℃ to -50℃), and start the compressor. Observe the state of the material until it is completely frozen into solid ice crystals. This process takes approximately 2 to 4 hours, with the exact time depending on the volume of the material and the initial temperature. Incomplete freezing will lead to a decrease in the subsequent sublimation efficiency.
Turn on vacuum drying
After the freezing process is completed, start the vacuum pump to remove the air inside the chamber. At this point, the ice crystals directly sublimate into water vapor and are captured through the condenser. If the sublimation rate is too slow, fine-tune the temperature of the heating plate (generally not exceeding 40℃).
Transfer to secondary drying
After the primary drying is completed (the material temperature approaches the set value of the heating plate), start the deep desorption drying. Slowly increase the temperature. During this period, continuously monitor the pressure changes to prevent material collapse.
End and Sampling
When the online moisture meter shows that the standard is met (usually ≤2%) or the cumulative drying time is sufficient, turn off the heating and vacuum systems. After the pressure inside the warehouse returns to normal, open the warehouse and wear heat-resistant gloves to take out the dried products. Immediately seal and store away from light to complete this operation.
The application fields of vacuum freeze dryers
Laboratories and industrial plants
Vacuum freeze-dryers are indispensable tools for scientific research and industrial production. In the laboratory, freeze dryers can precisely dry heat-sensitive biological samples and chemical reagents while retaining active ingredients.
Chemical plants use it to process fine chemical intermediates to prevent high-temperature decomposition. Pharmaceutical factories rely on it to prepare sterile preparations such as vaccines and antibiotics to ensure the stability of drugs.
Household freeze dryer
The household version can dry fruits, vegetables, and meats to make ready-to-eat snacks, locking in nutrition and flavor. In agricultural product processing, it can handle fragile ingredients such as strawberries and mushrooms. After rapid pre-freezing with liquid nitrogen and sublimation dehydration, the taste is close to fresh after rehydration. The food industry also uses it to make instant coffee and probiotic powder, which can extend the shelf life while maintaining quality.
Advanced manufacturing
In metallurgical and mineral industries, freeze dryers can dry metal powders and enhance their fluidity.
In the new energy industry, the purity of polycrystalline silicon cutting fluid and the precursors of lithium battery electrode materials is higher after drying. The recycling efficiency of solar wafer waste has been improved, and the performance of graphene composite materials has become more stable.
The ceramic industry uses it to process powders and optimize the density and strength after sintering.
Special professional scenarios
During environmental treatment, the volume of sludge and straw is reduced after drying, which is convenient for transportation and resource utilization.
In the field of cultural relics protection, the restoration of ancient books and calligraphy, and paintings through freeze-drying technology can prevent fiber embrittlement and extend their preservation time.
The freeze dryer used in animal specimen taxidermy can shape tissues and preserve their morphology for a long time.
In aerospace technology, satellite components and special materials need to be prepared in a waterless environment, and freeze-drying technology can also handle them.
Is a freeze dryer the same as a dehydrator
A freeze dryer is different from a dehydrator. A freeze dryer dries moisture at low temperatures.
The dehydrator is used to heat and remove moisture from materials, with the temperature often exceeding 60℃. For some heat-sensitive materials or fruits, vegetables, etc., dehydrators can cause product shrinkage, nutrient loss, and structural damage. However, the dehydrator is faster than freeze-drying. You can use a dehydrator to dry some materials that are not sensitive to heat, such as ores and grains.
The vacuum freeze dryers produced by FanQun comply with the international authoritative iso quality management system certification. It has established long-term cooperative relationships with Fortune 500 companies such as Sinopec, NENTER, and Beijing Tongrentang, and has been exported to over 50 countries, including Europe, America, and South Korea. At present, our freeze dryers have been integrated with AI technology to operate automatically and support remote program Settings on mobile phones and computers. At the same time, considering that our friends come from all over the world, FanQun freeze dryers can be customized in three national languages to provide convenience for everyone. Our production philosophy has always been to prioritize altruism. FanQun is very much looking forward to more product inquiries from friends across the ocean.
You can ask the workers to change the vacuum pump oil every 20 to 30 batches. This will probably only take about two minutes. For some other minor maintenance tasks, such as clearing the frost inside the condenser or replacing the hardened sealing ring, just clean it according to your needs.
The price of a freeze dryer is not cheap. The price of a small freeze dryer with an area of less than 1 square meter is approximately 1,300 US dollars. A freeze dryer capable of drying about 10 kilograms costs around 7,000 US dollars.
Freeze-drying is the process of drying materials at extremely low temperatures by reducing pressure in a vacuum environment. Vacuum drying is the process of evaporating moisture by heating at high temperatures in a vacuum environment.
