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 FD-300 Freeze Dryer | Vegetable freeze dryer
FD-300 Freeze Dryer | Vegetable freeze dryer
Date:2016-03-24 11:13:50

Vegetable freeze dryer is designed for freeze drying food material. It requires a large production capacity, lower equipment cost and lower cost on energy consumption. We focus on manufacturing this type of vegetable freeze dryer for 10 years and more with rich installation experience in home and abroad.
Two type of vegetable freeze dryer for your applications:
1, Contacting type of vegetable freeze dryer: better for liquid material, mainly for small or mudium production. The plates and trays are constructed by stainless steel. No IQF. Both refrigeration and heating are on the plates, and material is loaded by hand.
2, Radiant type of vegetable freeze dryer: better for solid material, mainly for mudium or large scale production. The plates and trays are constructed by aluminum, with IQF. The refrigeration is in IQF and heating on the plates, and the material is loaded by trolley on the track system.
Why to choose vegetable freeze dryer? 

Do you hope to have an equipment to dry fresh food material without nutrition lost, and meanwhile preserves its original taste, flavor and color? Only vegetable freeze dryer can meet this requirement. Do you want to get the most healthy dried food with the lowest cost far away from those outrageously expensive pharmaceutical freeze-dryers? Our vegetable freeze dryer can make it. 

Remarkable advantage of freeze dried food:

1, Retain biological activity

To retain biological activity as much as possible, the material must be in low temperature environment, but on the contrary, drying needs heat involved. Heating will destroy biological activity and nutrition. Our solution is to get the liquid water in the material completely frozen to solid status. The water in the material is solid ice status during the whole heating processing till the material is completely dried. So, the biological activity is retained greatly.
2, No damage to the nutrition

Heating is no doubt the main reason of nutrition damage. By using our vegetable freeze dryer, heating processing occurs after material gets completely frozen to ice status. Thus, it typically retains 97% of the nutritional value.
3, Taste, color and appearance

Lyophilized by our vegetable freeze dryer, the material still tastes fresh, delicious as a snack, but a different try. The freeze dried material remains the same color, flavor and appearance as it was firstly harvested. And the volume of freeze dried material has no change, that is to say the appearance has no shrink or toughen. It is the real high quality preserved food.
4, Longer shelf-life

Freeze dried food material has a longer preservation time than frozen food, canned food and oven drying food. Having freeze dried food storage, you do not need to rack your brains what to eat and far away from pigmentum, additive, GMO and anti-season food material. Freeze-drying help us design a healthy lifestyle.

Application of our vegetable freeze dryer: 

Vacuum freeze-drying technology is applied to process food material to make freeze dried food. The vegetable freeze dryer is used in all conceivable kinds of agricultural products with top drying quality. 
durian, strawberry, mango, apricot, kiwifruit, pineapple, lemon, raspberry, carambola, avocado, banana etc.
broccoli, parsley, mushroom, bean, scallion, asparagus, onion, celery, carrot, tomato, pepper etc.
Other food:
beef, coffee, colostrums, cordyceps sinensis, flower, tea, honey, sea food and all kinds of pets food.

Working principle: 

In a sealed vacuum surrounding, by heating the complete frozen food material, the moisture in the frozen material will be evaporated to a continuous frozen vapor condenser. After 20-30 hours, the food material is dried, the water is moved to vapor condenser of the vegetable freeze dryer. 

Construction and main components of vegetable freeze dryer:

Each single vegetable freeze dryer is composed by a vessel/chamber with shelf plates, trays and vapor condensers inside. The vessel can be cylinder shaped or cuboid shaped.
All-in-one:for small vegetable freeze dryer, all components can be mounted on one frame. It is easy to install and ship.
Assemble:for big vegetable freeze dryer, vessel is one individual module, refrigerator is a module, vacuum pump is a module, heating system is a module, and control system is another module. We will get all modules collected on customer's site.
1, Vessel, shelf plates, trays and vapor condenser:

Shelf plates and trays can be stainless steel or aluminum, vapor condenser is made of stainless steel. The standard configuration of stainless steel is SUS304, we have SUS316 for option. The standard configuration of shelf plate is welded pieces; we have whole pieces for option. 

2, Refrigeration compressor

Brand: Refcomp, Bitzer, Carrier, Frascold, Hanbell, Fusheng, and Chinese local brands for your option.
The refrigeration system freezes the shelf plates during in-place freezing, evacuation and the early stages of drying. It also freezes the vapour condenser during the drying cycle. Screw type of compressor is adopted on the large scaled vegetable freeze dryer and piston for small ones, and the refrigerant used is R404A, R507 etc environment friendly Freon. 

3, Vacuum pump

Brand: Tuthill, Edwards, Leybold, Ulvac, Diavac and Chinese local brands for your option. 
The vacuum system is composed of drying chamber, condenser, vacuum pipes, valves, back pump and holding pump. It requires no leaks; Vacuum system is an essential for the rapid sublimation. Backing pumps and holding pumps are required for large scaled vegetable freeze dryer to give efficient capacity for evacuation.
4, Heating system

The heat-plates are cooled or heated with a heat transfer fluid. This fluid can be chilled or heated to provide in-place freezing or heating of the product during the drying cycle. An electric boiler directly heats the fluid, and chilling is through an intermediate heat exchanger. A centrifugal pump provides the forced circulation of the heat transfer fluid. Optional fluid: ethanol, glycol, silicon oil, deicing fluid, alcohol, water etc.

5, Defrost system

Water is used for defrosting the vapour condenser. As an optional extra, heat can be reclaimed from the refrigeration compressor to enable 60C hot water defrost, greatly reducing defrosting times over conventional cold water.
6, Control system

Brand: Siemens or Advantech or local brand for option. 
CE, UL approved Siemens or Advantech PLC is adopted for control system. All electrical components are compatible with local supplies including voltage, frequency, wire, motor circuit breakers and overload protection. A variety of sensors support the data acquisition and control of vegetable freeze dryer: Pressure transducers are fitted, which monitor and control the refrigeration system. Vacuum pressure is monitored at the product chamber. Temperature sensors measure and control the heating fluid.
Installation and training:

We have engineers with 10 years installation experience available for our vegetable freeze dryer installation guidance and service; and train customer'sworkers operate the machine. 
Packing and delivery

Small vegetable freeze dryer normally packed by wooden box and shipped by standard container. If export to European countries or north America countries, the wooden box will be fumigated. As the chamber of vegetable freeze dryer FD-500-FD2000 is too big, the vessel is shipped by FR container or bulk vessel, the rest normally packed by wooden box and shipped by standard container.

Technical parameters of vegetable freeze dryer:

Model FD-20 FD-50 FD-100 FD-200 FD-300 FD-500 FD1000 FD1500 FD2000
Type Conductive type Radiant type
Ice capacity (kg/batch) 20kg 50kg 100kg 200kg 300kg 500kg 1000kg 1500kg 2000kg
Condenser temperature(℃) -45℃ -45℃ -45℃ -45℃ -50℃ -50℃ -50℃ -50℃ -50℃
Shelf temperature(℃) -30to 60 -30to 60 -30to 60 -30to 60 <100 <100 <100 <100 <100
Product cooling in place in place in place in place in IQF in IQF in IQF in IQF in IQF
Usable shelf area (m2) 2 m2 5 m2 10 m2 20m2 30m2 50 m2 100 m2 150 m2 200 m2
Number of shelves 5+1 6+1 8+1 10+1 9+1 10+1 15+1 18+1 17+1
Shelf dimension (m) 1.0*0.4 1.2*0.7 1.6*0.8 2.01*1 2.8*1.2 4.2*1.2 5.6*1.2 7.0*1.2 9.82*1.2
Shelf spacing (mm) 40 50 50 50 95 95 95 95 95
Heating/cooling medium oil oil oil oil water water water water water
Number of product trays 10pcs 12pcs 16pcs 60pcs 72pcs 120pcs 240pcs 360pcs 476pcs
Tray dimension (mm) 400*500 600*700 800*800 500*670 605*690 605*690 605*690 605*690 605*690
Trolley (1460*1390mm) / / / / 3 3 4 5 7
Rail system for fast loading / / / / included included included included included
Individual quick freezer / / / / included included included included included
Refrigerant R404a R404a R404a R404a R404a R404a R404a R404a R404a
The way of cooling by air by air by water by water by water by water by water by water by water
Ultimate vacuum level (Pa) 10Pa 10Pa 10Pa 10Pa 15Pa 15 Pa 15 Pa 15 Pa 15 Pa
The way of defrost by water by water by water by water by water by water by water by water by water
Power requirement (kw) 6kw 11kw 18kw 33kw 52kw 91kw 174kw 261kw 352kw
Installation area (m2) 7 9 10 15 100 130 200 320 380
Chamber dimension(m) 1.9*1*1.8 2.6*1.2*2 3*1.4*2.1 3.7*2*2.2 5.5*2*2.5 6*2.3*2.8 11*2.6*3 14*2.6*3 17*2.6*3
Weight (kg) 1500 2000 2500 3500 7000 11000 17000 22000 25000

What we can supply?

1, Large scaled production capacity: from 10-2000kg per batch (24 hours).
2, Equipments with certificates of ISO, CE, UL, RU, CSA, ASME etc is an optional choice. You can also choose the best local brand equipment as an option to save your cost. 
3, 220V, 380V, 50Hz is the standard configuration; 110-120, 60Hz, 400-480V, 60Hz is optional. 
4, We provide auto tracking loading system as a standard configuration from FD-10 to FD-2000 radiant type of vegetable freeze dryer. 
5, We provide manual loading for contacting freeze dryer as an option from FD-10 to FD-300. 
6, We provide IQF (Individual Quick Freezing) as a standard configuration from FD-10 to FD-2000 for radiant type of vegetable freeze dryer. 
7, Steam or electricity is optional for material heating to save your energy cost.
8, We provide recyclable hot-water defrost system to improve the working efficiency and save energy cost. 
9, We provide all-in-one vegetable freeze dryer to shorten installation time to 2-3 days for small-scaled vegetable freeze dryer; and meanwhile provide modularized units to shorten installation time for large-scaled vegetable freeze dryer. The vegetable freeze dryer will be designed according to customer's detail requirement. 
10, We have engineers available for the over sea's installation of vegetable freeze dryer.