The steam air retort provides a heat source to the sterilization retort through two steam distribution pipes installed at the bottom. No exhaust process is required. The large-flow axial flow fan installed in the sterilization retort fully mixes the cold air and steam in the retort. It is then used as a heat transfer medium to evenly heat and sterilize the canned food in the sterilizing retort. Since the fan in the retort is carefully designed, the sterilization process does not require an exhaust process. The large-flow fan can remove the air in the pot. The air bags are fully dispersed and mixed with steam as a heat transfer medium for sterilization, with uniform temperature and no cold spots. The steam mixture is forced to circulate in the sterilizing retort through the air duct. The heat in the sterilizing retort is evenly distributed, which can meet the requirements of the thermal sterilization process of canned food in various packaging types.
Suitable for all heat resistant and waterproof package material except casing
1. Glass container: Glass bottle, glass jar
2. Metal can : Tin canned, aluminum can
3. Plastic container serial: PP bottles, HDPE bottles
4. Flexible pouch serial: flexible retort pouch, laminated film bag, high temperature cooking bag, vacuum bag
Step 1: heating process
Start the steam and fan first. Under the action of the fan, the steam and air in the kettle flow forward and backward through the air duct.
Step 2: Sterilization Process
When the temperature reaches the set temperature, the steam valve is closed and the fan continues to run in the cycle. After the holding time is reached, the fan is turned off; the pressure in the tank is adjusted within the required ideal range through the pressure valve and exhaust valve.
Step 3: Cool down
If the amount of condensed water is insufficient, softened water can be added, and the circulation pump is turned on to circulate the condensed water through the heat exchanger for spraying. When the temperature reaches the set temperature, the cooling is completed.
Step 4: Drainage
The remaining sterilizing water is discharged through the drain valve, and the pressure in the pot is released through the exhaust valve.
Steam air retort features:
Reasonable steam expansion injection holes: In order to ensure steam circulation and prevent unfavorable steam circulation at the bottom of the product, our company adopts the design concept of steam segmented injection. All injection holes are located in the middle gap between baskets.