GF Freeze Dre Machine

How Does Freeze Dry Machine Work?

Here’s the official definition of freeze drying (Lyophilization) of Freeze Dry Machine

from the FDA:

So, how do we do that at home?

First, you get a heavy duty Freeze Dry Machine (the Harvest Right units drop to -30°F (-34°C) or colder).

Second, you pair this up with a completely airtight chamber that can hold a vacuum (no oxygen) every single time you use it.

Third, you tie in a high end vacuum pump strong enough to suck the stripes off a zebra.

Fourth, you add a heater and thermostat, so you can cycle the temps up and down, repeating the sublimation process for hours on end.

Fifth, tie in a humidity sensor to make sure the water is out, triggering the cycle completion.

What foods can you freeze dry?

Fruits, vegetables, meats, dairy products, meals, desserts, and more. Freeze drying is safe for preserving cooked pasta and grains, unlike canning.

What foods can’t you freeze dry?

Anything that’s mostly fat or mostly sugar will not freeze dry well. Fat won’t dry – but it can heat up and melt in the unit and coat every surface. When I tried pre-cooked pork sausage patties, they made a big mess.

Sugar binds to water, trapping it in the food. This is great for inhibiting bacteria growth, but it means you can’t freeze dry jams and jellies that are mostly sugar. Plain fruit and most desserts are fine.

How long does freeze drying take?

Around 24 hours was the estimated freeze drying time for an average load, but with the new software, I’ve freeze dried loads in as little as 13 hours. Warm, humid conditions increase drying time.

When you load up your home freeze dry machine and hit “Start”, the unit takes you through a short menu. You select whether the food going in is already frozen (or not), and whether it is solid or liquid. Then the Freeze Dry Machine prompts you to close the drain valve and begin the cycle. More information about freeze dry machine click gf-machine

Lyophilization of a Vacuum Freeze Dryer was used to prepare tissue samples for structural studies (eg, electron microscopy studies). Freeze drying is also used in chemical analysis to obtain dried samples or to concentrate samples to increase analytical sensitivity. Freeze-drying stabilizes the sample components without changing the chemical composition, making it an ideal analytical aid. Freeze drying can occur naturally. In the natural case, this process is slow and unpredictable. Through the freeze-drying system, people have improved and subdivided many steps to speed up the process.

Bell-type Vacuum Freeze Dry Machine: The freeze-drying chamber and the cold trap are upper and lower structures, and the freeze-drying chamber has no pre-freezing function. This type of lyophilizer requires manual operation when it is transferred to the drying process after the material has been pre-frozen. Most of the experimental Freeze Dry Machine are bell-type, with a simple structure and low cost. Most of the freeze-drying chambers use a transparent plexiglass cover to facilitate the observation of the lyophilization of the material.

In-situ freeze-drying machine vacuum freeze-drying machine: the freeze-drying chamber and the cold trap are two independent chambers, and the shelf in the freeze-drying chamber has a cooling function. After the material is placed in the freeze-drying chamber, the material is pre-frozen and dried. The process does not require manual operation. This type of freeze dryer has a complicated manufacturing process and high manufacturing cost, but the in-situ freeze dryer is the development direction of the freeze dryer, an ideal choice for lyophilization process, especially suitable for medicine, biological products and other special products.

Ordinary shelf type vacuum freeze-drying machine: The material is bulk-packed in the material tray and is suitable for lyophilization of food, Chinese herbal medicine and powder materials.

Vacuum lyophilizer with gland type device: suitable for drying of bottled materials in Xilin. When lyophilized, prepare the materials in the vials as needed, float and cover the caps, freeze-dry them, and operate the gland mechanism after drying. The bottle cap can be pressed to avoid secondary pollution, re-adsorb moisture, and easy to store for a long time.

The amount of water vapor in the compressed air is determined by the temperature of the compressed air: Reducing the temperature of the compressed air reduces the amount of water vapor in the compressed air while maintaining the constant pressure of the compressed air, and the excess water vapor condenses into a liquid.Freeze Dry Machine uses this principle with refrigeration technology to dry compressed air. Therefore, the Freeze Dry Machine has a refrigeration system.

The refrigeration system of the Freeze Dry Machine is a compression type refrigeration system consisting of four basic components: a refrigeration compressor, a condenser, an evaporator, and an expansion valve. They are connected by a pipe connection to form a closed system in which the refrigerant circulates continuously in the system, undergoes a state change and exchanges heat with the compressed air and the cooling medium.

The refrigeration compressor draws the low-pressure (low-temperature) refrigerant in the evaporator into the cylinder of the compressor, and the refrigerant vapor is compressed, and the pressure and temperature are simultaneously increased; the high-pressure high-temperature refrigerant vapor is pressed to the condenser, and in the condenser, The higher temperature refrigerant vapor exchanges heat with the cooler water or air, and the heat of the refrigerant is taken away by water or air to condense, and the refrigerant vapor becomes a liquid.

This part of the liquid is then sent to the expansion valve, which is throttled into a low-temperature and low-pressure liquid through the expansion valve and enters the evaporator; in the evaporator, the low-temperature, low-pressure refrigerant liquid absorbs the heat of the compressed air and vaporizes (commonly called "evaporation") The compressed air is cooled to condense a large amount of liquid water; the refrigerant vapor in the evaporator is sucked away by the compressor, so that the refrigerant undergoes four processes of compression, condensation, throttling, and evaporation in the system, thereby Completed a loop.

In the refrigeration system of the Freeze Dry Machine, the evaporator is a device for conveying a cold amount, in which the refrigerant absorbs the heat of the compressed air to achieve the purpose of dehydration and drying. The compressor is the heart and acts to draw, compress, and deliver refrigerant vapor.

GuanFeng supplies different kinds of freeze drying machines. High quality and favorable price. We′re pleased to get your Inquiry and we will come back to as soon as possible. If you interested in our products, please feel free to contact us any time:

Zhejiang Guanfeng Food Machinery Co.,Ltd.

Add : South industrial park of Dongguan, Shangyu District, Shaoxing City, Zhejiang Province, China 312352

In-depth information click gf-machine

Vegetable Drying Machine has simple operation principle, simple operation method, convenient maintenance, and durability. Vegetable Drying Machine has enabled the development of rural agricultural production levels and enhanced production efficiency.

If you interested in GF Machinery, please contact us by click gf-machine

Vegetable Drying Machine has simple operation principle, simple operation method, convenient maintenance, and durability. Vegetable drying machine has enabled the development of rural agricultural production levels and enhanced production efficiency.

1.The basic principle is to use suitable temperature and hot air to promote the outward diffusion of water inside the fruit and vegetable to achieve the purpose of dehydration. The hot air provided is pure hot air, the drying box is at least five layers, the cycle is reversed, and the layer is dried layer by layer. The fifth layer is a relatively dry material, which is gradually wet to the top. The hot material is in contact with the hot material, and the wet material is in contact with the hot and humid air to avoid direct contact with the hot air.

2. In the process of use, the operation method is simple. The traditional roasting tobacco room uses coal as fuel. The temperature of the room is controlled by people's experience. When the coal quality, moisture and environmental temperature change, the temperature of the room is often not accurately grasped. The scorching burns not only makes the high-grade tobacco leaves low-grade, but even ranks as waste, which also adversely affects tobacco companies to purchase tobacco. The hot air temperature of the fruit and vegetable dryer is provided according to the demand of the article with the temperature range between 50°C and 160°C. Under the single operation, the feeding and discharging materials and the material are flipped. The manual operation is flexible and convenient, and the level of tobacco leaves can be guaranteed. Minimize the economic losses of tobacco farmers. Very suitable for small-scale individual production in rural areas;

3. Due to the simple structure and unique materials, Vegetable Drying Machine has the characteristics of convenient maintenance, safety and durability. The equipment is designed separately. The combustion chamber is separated from the vertical multi-layer drying box. The drying layer is made of new stainless steel material. It is resistant to high temperature and corrosion. The drying box has no pollution and impurities. Therefore, there will be no safety accident fire such as collapse, fire, etc.

Zhejiang Guanfeng Food Machinery Co.,Ltd. is an enterprise focus on Vacuum Freeze Dryer equipment, We welcome international customers to discuss cooperation, we will provide warm and thoughtful service for you. Contact us today to begin sourcing.

Company: Zhejiang Guanfeng Food Machinery Co.,Ltd.

Add : South industrial park of Dongguan, Shangyu District, Shaoxing City, Zhejiang Province, China 312352

Vegetable Drying Machine : https://www.gf-machine.com/product/drying-equipment/

Vegetable Drying Machine has simple operation principle, simple operation method, convenient maintenance, and durability. Vegetable drying machine has enabled the development of rural agricultural production levels and enhanced production efficiency.

1.The basic principle is to use suitable temperature and hot air to promote the outward diffusion of water inside the fruit and vegetable to achieve the purpose of dehydration. The hot air provided is pure hot air, the drying box is at least five layers, the cycle is reversed, and the layer is dried layer by layer. The fifth layer is a relatively dry material, which is gradually wet to the top. The hot material is in contact with the hot material, and the wet material is in contact with the hot and humid air to avoid direct contact with the hot air.

2. In the process of use, the operation method is simple. The traditional roasting tobacco room uses coal as fuel. The temperature of the room is controlled by people's experience. When the coal quality, moisture and environmental temperature change, the temperature of the room is often not accurately grasped. The scorching burns not only makes the high-grade tobacco leaves low-grade, but even ranks as waste, which also adversely affects tobacco companies to purchase tobacco. The hot air temperature of the fruit and vegetable dryer is provided according to the demand of the article with the temperature range between 50°C and 160°C. Under the single operation, the feeding and discharging materials and the material are flipped. The manual operation is flexible and convenient, and the level of tobacco leaves can be guaranteed. Minimize the economic losses of tobacco farmers. Very suitable for small-scale individual production in rural areas;

3. Due to the simple structure and unique materials, Vegetable Drying Machine has the characteristics of convenient maintenance, safety and durability. The equipment is designed separately. The combustion chamber is separated from the vertical multi-layer drying box. The drying layer is made of new stainless steel material. It is resistant to high temperature and corrosion. The drying box has no pollution and impurities. Therefore, there will be no safety accident fire such as collapse, fire, etc.

Zhejiang Guanfeng Food Machinery Co.,Ltd. is an enterprise focus on Vacuum Freeze Dryer equipment, We welcome international customers to discuss cooperation, we will provide warm and thoughtful service for you. Contact us today to begin sourcing.

Company: Zhejiang Guanfeng Food Machinery Co.,Ltd.

Add : South industrial park of Dongguan, Shangyu District, Shaoxing City, Zhejiang Province, China 312352

Vegetable Drying Machine : https://www.gf-machine.com/product/drying-equipment/

Individual Quick Freezing usually abbreviated IQF Freezing Machine is a freezing method used in food processing industry. Products commonly frozen with IQF Freezing technologies are typically smaller pieces of food products and can range from all types of berries, fruits and vegetables diced or sliced, seafood such as shrimps and small fish, meat, poultry and even pasta, cheese and grains. Products that have been subjected to IQF are referred to as Individually Quick Frozen or IQF'd

One of the main advantages of this method of preparing frozen food is that the freezing process takes only a few minutes. The exact time depends on the type of IQF Freezing and the product. The short freezing prevents formation of large ice crystals in the product’s cells, which destroys the membrane structures at the molecular level. This makes the product keep its shape, colour, smell and taste after defrost, at a far greater extent.

Another significant advantage of IQF Freezing technology is its ability to separate units of the products during freezing, which produces higher quality product compared to block freezing. This advantage is also important for food sustainability, as the consumer can defrost and use the exact needed quantity. There is a range of IQF Freezing technologies, but the main concept is to transport the product into the freezer with the help of a processing line belt or infeed shaker. Inside the freezer, the product travels through the freezing zone and comes out on the other side. Product transportation inside the freezer is by different technologies. Some freezers use transportation belts similar to a conveyor belt. Others use bed plates that hold the product, and an asymmetrical movement makes the plate advance by itself through the freezer.

GUANFENG was established in 2013. Through years of hard work, we become one of the leaders in the food machinery industry. We own more than 30 product patent certifications, also obtained ISO9001, CE, SGS etc certifications. If you would like to establish business relationship with us, please contact us at any time.

GuanFeng has modern manufacturing facility and professional team, Every GuanFeng IQF Freezing machine is tested at our facility in China before delivery. If you intrested in our products, please feel free to contact us any time:

Zhejiang Guanfeng Food Machinery Co.,Ltd.

Add : South industrial park of Dongguan, Shangyu District, Shaoxing City, Zhejiang Province, China 312352

Vegetable Processing Machine : https://www.gf-machine.com/product/pre-processing-equipment/

In the drying process of fruits and vegetables, the speed of Frozen Solution plays an important role in the quality of dried fruits and vegetables. What will affect the drying speed when fruits and vegetables are dried? When the other conditions are the same, the faster the drying speed, the better the quality of dried fruits and vegetables. Of course, the drying speed is also limited by other factors, such as temperature, humidity, air flow rate, and characteristics of fruits and vegetables.

1. Temperature and relative humidity of dried fruits and vegetables

The temperature and humidity of the drying medium determine drying speed. The higher the drying temperature, the lower the humidity, the faster the water evaporates, and the faster the drying speed. However, for some products, the temperature is too high, but it will form a reaction, affecting the quality. Conversely, with is low temperature, the drying time is prolonged, and the product is prone to oxidative discoloration or even mildew. According to the relevant experiments, for higher water content, the drying temperature can be maintained higher, and later adjustments should be made, combined with internal and external diffusion. For fruits and vegetables with low water content, it is not advisable to use excessively high temperatures to avoid splitting, coking, and crusting of the epidermis. Different temperatures are chosen for different fruits and vegetables, generally 40-90°C. Suitable equipment for drying at this temperature are: belt dryer, dehydrated vegetable dryer, hot air circulation oven, new oven, vacuum dryer.

2, Air Flow Rate

The air flow rate is large, and the fruits and vegetables dry quickly. Some fruits and vegetables need to increase the wind speed, and the drying time is shortened accordingly, and the quality is good.

3. Types and status of fruits and vegetables

The variety of fruits and vegetables differs in physical properties and structure, and the drying speed is different under the same conditions. According to the evaporation amount, moisture, color, etc., it is generally possible to slice, diced, and cut the difficult-to-dry materials to obtain better quality and optimum drying speed.

GUANFENG specializes in the production and sales of Vacuum Freeze Dry Machine, Freezing IQF, as well as Fruit Processing Machine, Vegetable Processing Machine, Food Processing Machine equipment. As a professional Freeze Dry Machine Manufacturer , we sincerely invite you to pay a visit to a brilliant future! Contact us by click https://www.gf-machine.com/

There are various drying methods such as sun drying, boiling, oven drying, spray drying, and vacuum drying, but ordinary drying methods are usually carried out at temperatures above 0℃. The products dried will shrink the size and harden the texture. Most of the volatile components are lost, some heat-sensitive substances are denatured and deactivated, and some substances are even oxidized. Therefore, the dried product has a large difference in properties compared with that before drying. The Freeze Dry method is basically carried out below 0℃, that is, in the state where the product is frozen, and only when the residual moisture content of the product is lowered in the later stage is the temperature above 0℃, but generally, it does not exceed 40℃. Under vacuum conditions, when the water vapor is directly sublimated, the drug remains in the frozen ice shelf, forming a sponge-like porous structure, so the volume after drying is almost constant. Before using it again, as soon as you add water for injection, it will dissolve immediately. GF Freeze Dry Machine has some advantages over other machines.

• * Many heat-sensitive substances will not be denatured or inactivated.
• * When dried at low temperatures, some of the volatile components in the material are lost.
• * During the freeze-drying process, the growth of microorganisms and the action of enzymes cannot work, so that the original traits can be maintained.
• * Since it is dried in a frozen state, the volume is almost constant, with the original structure, and concentration does not occur.
• * Since the moisture in the material exists in the form of ice crystals after pre-freezing, the inorganic salt-soluble substances originally dissolved in water are evenly distributed in the material. During the process of sublimation, the substances dissolved in water are precipitated, which avoids the phenomenon that the inorganic salt carried by the internal moisture migration to the surface in the general drying method is precipitated on the surface to cause surface hardening.

As a professional manufacturer and supplier of Freeze Dry Machine, GuanFeng welcome new and old customers, friends from various circles at home and abroad to visit and join hands to create a better future! Click gf-machine or gf-machine.com for furhter more information.