I need to turn on a fan inside an ice cream display cabinet when the lid is closed, and turn the fan off as soon as the lid is opened.
I'm looking for a way to have as little temperature derivation as possible throughout the whole display cabinet. The ice cream pans (actually it's gelato) sit at the very top of the inside of the display cabinet and it is opened and closed frequently during operation, which causes a certain amount of ambient temperature air inside everytime it is opened.
I figured by positioning an appropriately sized fan at the bottom of the freezer that turns on when the lid is closed, that will move the colder air up and even out the temperature difference as much as possible.
I'm wondering if there are any issues with running a fan inside a freezer at -12 degrees celsius, or what type of fan would be more appropriate for this task.
Will the fan freeze? Maybe this is crazy..