How Food Dehydrator Works

The dehydration process of food is very popular now. People dehydrate and reprocess food not only to increase the added value of food, but also to facilitate transportation and prolong shelf life. Dried foods can not only retains the original nutrients of the food but also increases the flavor of the food. Usually a food dehydrator is needed to dry food, so how does a food dehydrator work? Next, Baixin Company, which has more than ten years of experience in food dehydration, will explain the working principle of the food dehydrator.
First of all, we want to know about the commonly used food dehydrators on the market. There are four commonly used food dehydrators, namely heat pump food dehydrator room, mesh belt food dehydrator, all-in-one food dehydrator and microwave food dehydrator.

1. heat pump dehydrator food machine

The heat pump dehydrator food machine is equipped with a trolley with trays and tray racks. When we dry the foods, we put the food in the tray, on the tray rack of the cart, and push it into the dehydrator food chamber to dehydrate. Foods are putted on the shelf car and enter the closed cycle dehydrator room for dehydrator without any pollution in the process. The heat source of the heat pump dehydrator food machine is air. The heat in the air is absorbed by the heat pump compressor. After being compressed and released, a large amount of high-temperature hot air can be obtained, so as to achieve uniform drying and processing of foods.

Components of heat pump dehydrator food machine

One set heat pump dehydrator food machine contains: heat pump dehydrator host, dehydrator chamber, fan frame with fan, trolley with tray. The dehydrator chamber is used 100mm polyurethane insulation board, supporting 304 stainless steel trolleys and trays. Put the foods into the material tray, insert the food tray into the vegetable cart and push it into the dehydrator room, and close the sealing door to start drying production. The dehydrator temperature range is 65 ℃ - 85 ℃, and the dehydrator temperature is divided into different temperatures, and the temperature is gradually lowered. Generally, the drying time is about 8-10 hours to complete a batch.

The working principle of heat pump dehydrator food machine

The heat pump food dehydrator room uses the reverse Carnot principle to let the hot air circulating blower dehydrator food. Compressor and other equipment make up the refrigerant circulation system. The fan impeller rotates, the outside air enters the oven, passes through the heater, forms hot air, and then enters the studio through the gap of the air distribution plate, and a large amount of hot air in the circulating flow continues to enter the new air inlet for supplementation. The moisture discharged after recovery is discharged from the exhaust port. The whole cycle makes the food heated evenly and achieves the purpose of dehydartion.

Other application areas of heat pump dehydrator food machine

Heat pumps can be used in many applications, in addition to drying vegetables can also be used in agriculture, industry, seafood, grain, herbal medicine, construction, paper products, condiments, mineral industry, etc.
1. Dried vegetables such as radish, lettuce, pumpkin, carrot, spinach, cassava, etc.
2. Fruits such as apples, lemons, mango slices, dried longan, dried longan, etc.
3. Dried meat such as sausage, beef, duck, ham, etc.
4. Others it can dry noodles/wooden/incense/herbs/floss etc.

2. continuous mesh belt food dehydrator machine

Mesh belt food dehydrator machines have a wide range of heat sources such as coal heating, gas heating, steam heating, biomass pellet heating or electric heating. It is a multi-layer continuous drying structure. When drying foods, just put the foods in the feeding port, and the foods will enter the dehydrator with the feeding conveyor for drying. Foods are dried and dehydrator layer by layer from top to bottom. The drying speed is fast and the production efficiency is high, which is very suitable for the drying and processing of large quantities of foods.

Components of continuous mesh belt food dehydrator machine

One set continuous mesh belt food dehydrator machine contains: homogenizer, feeding conveyor,dehydrator host, output conveyor, observation door, heat source, air intake system, control panel. The food dehydrator machine consists of 4 parts, namely the feed conveyor, the main machine of the mesh belt dehydrator, the heat source and the discharge conveyor. The reformer provides heat, and the through-flow mesh belt food dehydrator machien is the main body of the drying equipment, which consists of a cabinet and multi-layer conveyor belts; the electrical control system controls the start, operation and stop of the entire equipment. With the cooperation of other auxiliary components, the drying equipment completes the drying and discharging process of food, and realizes the drying process of food drying. 

The working principle of continuous mesh belt food dehydrator machine

Baixin food continuous mesh belt dehydrator machine is a continuous production drying equipment. The main heating methods are electric heating, steam heating and hot air heating. Its main working principle is to distribute the material evenly in the network. Through the operation of the machine, the food moves in the dehydrator machine, and the hot air extracts the water vapor of the food. So as to achieve the purpose of drying. The working temperature is 40-120 degrees Celsius. The drying cycle is 1-5 hours. Mainly used for agricultural and sideline products such as fruits and vegetables, Chinese herbal medicines, etc. The equipment is easy to operate, saves time, has a healthy drying process, and protects the environment.

3. microwave food dehydrator machine 

Components of food microwave dehydrator machine

A complete food microwave dehydrator machine includes: microwave chamber， water tower, PLC control panel, feeding part, conveyor, monitoring window.

Working principle of food microwave dehydrator machine

Microwaves are electromagnetic waves at a frequency of 300 MHz to 300 GHz.The material in the heating medium in the molecules of water is a polar molecule. It is the rapidly changing under high-frequency magnetic field, its polarity orientation will be with the change of external electric field changes, resulting in molecular motion and friction between the effect, this field of the microwave field can be transformed into thermal energy within the medium, the temperature of the food increased, heating and puffing a series of physical and chemical processes, to achieve the purpose of microwave heating and drying.
During the equipment is working the microwave generator produces the microwave. The material enter into the heating chamber by conveyor. At this time, moisture and bacteria inside the material evaporate under the action of microwave energy to achieve unfreeze sterilization ripening fixing drying purpose.

4. All-in-one food dehydrator machine

The last food dehydrator machine is the all-in-one food dehydrator machine with the smallest yield.
The drying principle is the same as that of the food dehydrator room. The all-in-one food dehydrator machine is equipped with a cart with trays and tray racks. When drying foods, we put them in trays, put them on the tray racks of the cart, and then push them into the food drying chamber for drying.
The heat source of the food all-in-one dehydrator machien is air energy. The heat in the air is absorbed by the heat pump compressor. After compression and release, a large amount of high-temperature hot air can be obtained, so as to achieve continuous and uniform drying and processing of foods. The operation of this all-in-one drying unit is relatively simple, simply plug in and dry.

Components of all-in-one food dehydrator machine

One set all-in-one food dehydrator machine contains: power jack, water outlet,exhaust air outlet, supporting wheels, PLC controller pancl, door lock, observation window,circulating air inlet, outlet for hot and dry air, PP tray, stainless steel tray, supporting racks for trys. The food all-in-one dehydrator machine has compact structure, good energy-saving effect, wide application range, high drying quality, convenient operation, simple installation and disassembly. It is the best drying equipment for small businesses, drying experiments and scientific research. 

Advantages of all-in-one food dehydrator machine

1. Stainless steel 304 material. The whole machine uses stainless steel material, can work a long time, and keep better heat preservation, bottom have wheeler, can move easily.
2. Great energy saving. Heat pump system design, low energy consumption, can save 75% energy than traditional electricity element heating.
3. Wide application easy operation. Fit for wide application, seafood, fruit, food, spice, herbs, etc all can use it to dry.
4. Gentle drying. Temperature range 40-80°C, low temperature dehydrate processing can better keep material nutrition, during drying, no need to move the machine.

The above is a brief introduction and technical parameters of the four food dehydrator machines of Baixin dehydrator machine company. If you are interested in our dehydrator machine or want to know more about the food dehydrator machine and food dehydrator machine price. Please feel free to contact us, and we will get you a satisfactory answer and solution according to your requirements.

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