How Does a Vacuum Frying Machine Work?

Step-by-Step Working Process

1. Vacuum Negative Pressure Formation

    

   The closed frying chamber pumps out air to create a low-vacuum environment.

    

   Water boiling point drops sharply under negative pressure.
    
2. Low-Temperature Oil Heating

    

   Edible oil is heated to 80–110°C, far below conventional frying temperature.

    

   Suitable for fruits, vegetables, snacks like banana chips, jackfruit chips, sweet potato chips.
    
3. Raw Material Vacuum Frying

    

   Pretreated materials are immersed in low-temp oil.

    

   Moisture inside the material quickly evaporates and is extracted by the vacuum system.

    

   Material dehydrates and crisps gradually, finished with low oil content.
    
4. Vacuum De-oiling

    

   After frying, the machine runs high-speed rotation under continuous vacuum.

    

   Excess surface oil is separated and recycled, reducing final oil rate.
    
5. Exhaust & Material Discharge

    

   Release vacuum pressure, take out finished crispy products.

    

   Residual oil is filtered and recycled for repeated use.
    

Key Advantages from This Working Mode

1. Low temperature, no nutrient loss, retain natural color & flavor.
2. Avoid high-temperature oxidation, no harmful substances (acrylamide).
3. Lower oil absorption, healthier crispy snacks.
4. Energy-saving, oil recycling, reduce production cost.