I got curious when I saw a door-less refrigerator for the first time. It was in a shop and I couldn't control myself so I began to look around to see how they work but I couldn't figure it out.

They worked well and there was nothing special about them -at least I couldn't find nothing. I couldn't also feel any notable air flow trough them. There was both horizontals and verticals. Keeping cool air in a vertical fridge is more or less like keeping water in a cubic glass that has one side removed!

I wanted to google a bit but I had no keywords for that. I tried inputs like "doorless fridges" or "no door fridges" but no good result.

  • 1
    $\begingroup$ Something like this? $\endgroup$
    – Kyle Kanos
    Oct 15 '14 at 16:05
  • $\begingroup$ Yes, @KyleKanos. Exactly. $\endgroup$ Oct 15 '14 at 17:03
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    $\begingroup$ They use what's called an air-curtain to contain the colder air behind a turbulent barrier. $\endgroup$
    – user6972
    Oct 15 '14 at 20:15

The cold air does flow down, but instead of flowing out of the fridge it is sucked into a channel, and pumped back out at the top of the fridge.

  • $\begingroup$ Thanks for the answer. Of course, the keyword "Air Curtain" might be useful for future visitors -Thanks to @user6972. $\endgroup$ Oct 21 '14 at 13:06

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