Application of blower fan in food processing industry

2025-05-13 09:39:06

In the food processing industry, the Blower fan by virtue of its unique gas conveying and regulating function, become the key equipment to ensure production efficiency and product quality, in a number of links play an important role.

Food drying link

In the drying and processing of dehydrated vegetables, dried fruit, nuts and other foods, the blower fan is the core of the hot air circulation system. It sends the heated air into the drying room, and the hot air blows evenly on the surface of the food to accelerate the evaporation of water. By adjusting the air volume and air pressure of the blower fan, the drying speed and temperature can be precisely controlled. For example, when drying mushrooms, a larger air volume is needed at the beginning to take away the surface moisture quickly, while the air volume is reduced at the end to avoid over-drying. In addition, some of the Blower fans are equipped with frequency conversion technology, which can automatically adjust the rotational speed according to the drying process, not only to ensure the drying effect, but also to reduce energy consumption. During the drying process, the blower fan maintains a stable hot air circulation, which also prevents crusting on the surface of the foodstuff and ensures the smooth discharge of internal moisture, thus improving the quality of the product.

Food Cooling

Once food is processed, it needs to be cooled quickly to ensure freshness and safety. The blower fan accelerates the air flow through forced convection to take away the heat from the food. In the cooling process after bread baking, the blower fan blows room temperature air to the freshly baked bread, causing the surface temperature of the bread to drop rapidly. For meat products, the cooling process is even more critical. The blower fan circulates the cold air in the cooling room, allowing the meat products to drop to a safe storage temperature quickly and inhibiting the growth of microorganisms. In cold chain logistics, the blower fan inside the refrigerated compartment operates continuously to ensure the even distribution of cold air and maintain a stable low-temperature environment, preventing food from deteriorating due to uneven local temperatures.

Food Ventilation and Conveyance

Good ventilation is essential in the workshop of a food processing plant. The blower fan sends fresh air into the workshop, discharges odour, moisture and harmful gases, and improves the working environment. In the flour milling shop, blower fans expel flying flour dust in a timely manner, reducing the risk of dust explosions and safeguarding worker health and production safety. Blower fans also play an important role in the food conveying process. In a pneumatic conveying system, the airflow generated by a blower fan is used to transport granular or powdered foodstuffs, such as candies and milk powder, from one place to another through pipes. This type of conveying is clean, efficient and reduces the risk of contamination by reducing the contact between the food and the outside world. Meanwhile, by adjusting the airflow of the blower, the conveying speed and flow rate of the food can be controlled to meet the needs of different production processes.

Food Processing Equipment Support

Many food processing equipment rely on blower fans to fulfil specific functions. In deep-frying equipment, the blower fan blows hot air to the oil surface, making the oil temperature uniform and avoiding foodstuffs from frying due to localised high oil temperature. At the same time, it can also be fried in the process of oil smoke produced in a timely manner, to maintain a clean working environment. In the vacuum packaging machine, the blower fan is used in the vacuum and inflatable link to draw out the air inside the bag and then fill it with inert gases such as nitrogen to prolong the shelf life of the food. In addition, in the fermentation segment of food processing, blower fans provide the right amount of oxygen to the fermenter, promoting the growth of microorganisms and the smooth progress of the fermentation process, which plays a key role in the flavour and quality of fermented foods.

Blower fans in the food processing industry through the production of a number of links, from drying, cooling to ventilation, conveying and equipment supporting, through the effective control of the air, to ensure efficient food processing and product quality and safety, the development of the food processing industry has an irreplaceable significance.