Water Immersion
Retort sterilizer directly pumps steam into hot water kettle to heat water to the preset temperature, and then hot water runs into process kettle and at the same time retort keeps process water circulating continuously to heat and sterilize.
During the cooling process, cooling water is pumped into process kettle to mix with hot water and then hot water is compressed into hot water kettle to cool.
1. Heat water in hot water kettle to preset temperature (only one time)
2. After crates filled with products are put into retort sterilizer, retort door and safety interlock device should be closed.
3. Compress hot water in hot water kettle into process kettle.
4. Process water can achieve required heat distribution by means of the below large-scale circulation:pump-pipeline-spray device-crate-retort bottom
5. During the whole cycle, back pressure is controlled via two automatic valves, which inject or release compressed air.
6. When water pump stops and acoustic-optical signal appears, this cycle of sterilization is over. At this moment, you are allowed to open door, unload crates and prepare for next cycle of sterilization.
Main Stages
1. Heating stage
Hot water runs into process kettle to get products immersed. Steam directly runs into kettle to heat process water to preset temperature.
2. Retention stage
Temperature and pressure keep stable according to set values.
3. Cooling stage
Cooling water pump injects cooling water into process kettle, and extra water is pushed back into hot kettle till the water reaches desired temperature.
(Note: several rounds of the above stages can be set in every sterilization cycle)
Advantages
1. Food safety
During the whole process, products avoid touching air and there is no cold air in kettle.Optimized water circulation system ensures balanced heat distribution in kettle.Smooth, mild but quick cooling helps products avoid thermal shock and leads to zero peculiar smell
2. Performance
Low noise ensures quiet and comfortable operating environment.
Hot water is stored in upper kettle so that it is very fast to heat products.
During the whole process, products are immersed in water. The buoyancy helps minimize package damage.
Products are totally immersed in water so that heat can penetrate into products from every direction.
3. Energy Saving
Hot water is reusable and energy consumption is minimized.
