Chinese Manufacturer Price Food Vacuum Freeze Dry Machine Fruit And
Vegetable Lyophilization Equipment
Product Application:
Freeze-drying is a low-temperature dehydration process that
involves freezing a product, reducing the pressure, and removing
ice (moisture) by sublimation, the transformation of a substance
from a solid state to a vapor without passing through an
intermediate liquid phase. Freeze-drying produces a high-quality
product because the entire process is carried out at low
temperature and pressure by applying a vacuum at a vacuum below the
triple point. The original shape of the product is maintained and
the rehydrated product is of excellent quality.
The vacuum dryer is composed of a refrigeration system, a vacuum
system, a heating system, and an electrical instrument control
system. The main components are drying box, water trap (cold trap),
refrigeration unit, vacuum pump, heating/cooling device, etc.
The difference between vacuum drying and freeze drying:
Vacuum drying mainly for raw products that not very heat sensitive.
Freeze drying mainly for areas where nutrition is need to preserve.
Brief description of freeze-drying process:
(1) Pretreatment process
For different materials to be dried, the pretreatment methods are
different. According to the characteristics of raw materials,
corresponding processing methods are adopted, such as pre-treatment
of vegetable freeze-drying, in addition to sorting, cleaning and
cutting of raw materials, blanching is also required. The blanched
vegetables need to be cooled quickly, and after cooling and
draining, they can be plated. For the pre-treatment of fruits, the
main purpose is to protect the color, and the processing techniques
are different.
(2) Pre-freezing process
There are two methods of pre-freezing: vacuuming, self-evaporative
freezing and freezing with quick-freezing equipment. According to
the nature of the material, select the pre-freezing rate. The
pre-freezing process directly affects the quality of materials.
(3) Sublimation drying
Sublimation drying is carried out in a vacuum device, so it is very
important to maintain a suitable vacuum during the sublimation
drying process.
(4) Post-treatment process
Vacuum freeze-dried food is generally porous and loose, with a
large surface area, easy to absorb moisture.The processing
technology cannot be ignored. It is usually packed in vacuum or
filled with inert gas.
Advantages of Vacuum Freeze Drying Machine:
Freeze-drying causes less damage to the substance than other
dehydration methods using higher temperatures. Nutrient factors
that are sensitive to heat are lost less in the process as compared
to the processes incorporating heat treatment for drying purposes.
Freeze-drying does not usually cause shrinkage or toughening of the
material being dried. In addition, flavours, smells, and
nutritional content generally remain unchanged, making the process
popular for preserving food.
The price of freeze-dried food in the international market is 4-6
times that of hot air-dried food, and 7-8 times that of
quick-frozen food. It has an irreplaceable position in special
occasions such as mountaineering, navigation, exploration, and
military field operations, and is also the main food for astronauts
in space. The proportion of freeze-dried food in the United States
and Japan has reached more than 40%. According to the statistics of
relevant departments, the United States consumes 5 million tons of
freeze-dried food every year, Japan 1.6 million tons, France 1.5
million tons, and other countries are also considerable. Japan
needs to spend about 100 billion yen to import freeze-dried food
every year, and Hong Kong, Singapore and South Korea import
freeze-dried food up to 50 billion yen every year. Japan, the
United States and Europe need about 6,000 tons of freeze-dried
garlic powder every year. It can be seen that the international
market for freeze-dried food is growing. People have higher and
higher requirements for food quality, especially for high-quality
baby food and health food. Dramatic increase.
Technical Specifications:
| Model | NT-F5M | NT-F10M | NT-F20M | NT-F30M |
| Control Type | PLC+ human-computer interface | PLC+ human-computer interface | PLC+ human-computer interface | PLC+ human-computer interface |
| Working | Quick freezing | Quick freezing | Quick freezing | Quick freezing |
| Material | 304 Stainless steel | 304 Stainless steel | 304 Stainless steel | 304 Stainless steel |
| Drying area (m²) | 5 | 10 | 20 | 30 |
| Loading capacity(kg) | 50 | 100 | 200 | 300 |
| External dimensions(m) | 3.8x1.2x1.9 | 5.8x1.7x2 | 7x1.7x2 | 9x1.7x2 |
| Tray quantity | 16 | 24 | 48 | 72 |
| Shelf temperature(℃) | -55~120 | -55~120 | -55~120 | -55~120 |
| Shelf medium | Low temperature silicone oil | Low temperature silicone oil | Low temperature silicone oil | Low temperature silicone oil |
| Prefreeze temperature(℃) | -30~-60 | -30~-60 | -30~-60 | -30~-60 |
| Cold trap temperature(℃) | -50~-80 | -50~-80 | -50~-80 | -50~-80 |
| Vacuum pump | Rotary vane pump | Rotary vane pump | Combined pump set | Combined pump set |
| Working vacuum | ≤130Pa | ≤130Pa | ≤130Pa | ≤130Pa |
| Defrosting mode | Hot water spray | Hot water spray | Hot water spray | Hot water spray |
| Cooling Power(kw) | 9 | 18 | 25 | 34 |
| Heating Power(kw) | 6 | 12 | 24 | 36 |
| Total Power(kw) | 18 | 34 | 56 | 83 |
| Working Temperature | ≤40℃ | ≤40℃ | ≤40℃ | ≤40℃ |
Payment terms:
T/T, L/C, Western Union, MoneyGram or negotiable.
Packing and Shipping:
1. Plastic film as inner packaging
2. Formal export packaging or packaging according to customer
requirements
Choose the best shipping method according to the actual situation
or customer requirements
FAQ
Q: Can you supply OEM or ODM?
A: Of course we can supply it. We are manufacturer, we can
manufacture the equipments according to your exactly requirements.
Q: Can you help design the entire process line?
A: Of course, our experienced engineers and technicians can help
you arrange the layout and installation of the entire production
line according to the actual situation such as your workshop
layout.
Q: How long is your production cycle?
A: Usually 7-25 working days, the exactly delivery time is
depending on the quantity and your ordering time.
Q: How is the payment?
A: T/T, L/C or other formal import and export payment method.
Q: How long is your warranty period?
A: One year after commissioning is completed.
Q: How to install?
A: We can currently provide online guidance services by experienced
engineers. If you need on-site installation, we can apply to the
government for installation abroad and calculate all the cost to
customers.
Q: Will you help us if we have any problems in future production?
A: It is necessary, you can contact me through mobile phone,
WhatsApp, etc. We are always at your service. We will help resolve
your issue as soon as possible
