your location:the process of quick-freezing pineapples in the pineapple liquid nitrogen tunnel quick freezing machine is as follows:
1. preprocessing: pineapple before enteringliquid nitrogen quick freezing machinebefore, preprocessing is required, including peeling, core removing, cutting, etc.
2. freezing preparation: place the pre-processed pineapple chunks on the conveyor belt, and the conveyor belt sends the pineapple chunks to the entrance of the liquid nitrogen tunnel quick freezing machine.
3. liquid nitrogen spraying: liquid nitrogen is sprayed onto the pineapple blocks through nozzles or spray devices, rapidly cooling the surface to form a layer of ice.
4. quick freezing: the pineapple blocks continue to move forward in the tunnel, constantly contacting and absorbing liquid nitrogen, and the temperature continues to decrease until the required quick freezing temperature is reached.
5. warming: after the quick-frozen pineapple blocks come out of the liquid nitrogen tunnel quick freezing machine, they need to be warmed up to gradually increase their temperature to a suitable temperature.
only in this way can the taste and quality of pineapple be guaranteed.
6. packaging: the pineapple pieces need to be packaged after they have been warmed up to avoid being contaminated and oxidized by the outside world again, and to facilitate storage and transportation.
in general, the pineapple liquid nitrogen tunnel quick freezing machine quickly cools down the pineapple blocks by spraying liquid nitrogen and reaches the required quick freezing temperature, thereby achieving quick freezing of pineapples.
