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Your Location: Home >> News >> Technical support >> Why do we choose a freeze-dried fruit machine?

Why do we choose a freeze-dried fruit machine?

Release Date: 2018/9/25 17:25:25 .
Browse: 387

  Why do we choose a freeze-dried fruit machine?
  Freeze drying fruit machine is designed for freeze drying food material. It requires a large production capacity, lower equipment cost and lower cost on energy consumption. We are a professional supplier of clinical and production freeze dryers in China. We focus on manufacturing this type of freeze drying fruit machine for 10 years and more with rich installation experience in home and abroad.
  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 freeze drying fruit machine, 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 freeze drying fruit machine, 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 freeze drying fruit machine:
  Vacuum freeze-drying technology is applied to process food material to make freeze dried food. The freeze drying fruit machine is used in all conceivable kinds of agricultural products with top drying quality.
  Fruits: durian, strawberry, mango, apricot, kiwifruit, pineapple, lemon, raspberry, avocado, banana etc.
  Vegetables: broccoli, parsley, mushroom, bean, scallion, asparagus, onion, celery, carrot, tomato, pepper etc.
  Other food: beef, coffee, colostrums, herbal, 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 freeze drying fruit machine.
  Construction and main components of freeze drying fruit machine:
  Each single freeze drying fruit machine 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 freeze drying fruit machine, all components can be mounted on one frame. It is easy to install and ship.
  Assemble:for big freeze drying fruit machine, 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, Refrigerator:
  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 freeze drying fruit machine 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 freeze drying fruit machine 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 freeze drying fruit machine: 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 freeze drying fruit machine installation guidance and service; and train customer'sworkers operate the machine.
  Packing and delivery
  Small freeze drying fruit machine 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 freeze drying fruit machine FD-500-FD2500 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.

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