Provided is a device submersion preventing structure which is capable of releasing heat generated from a device such as a pump and oil vapor, and preventing submersion of the device. The device submersion preventing structure comprises an enclosure having an internal chamber 60 for installing a pump 20 therein, wherein the enclosure 60 is configured such that an opening 61 is provided only in a bottom portion thereof, and a remaining portion thereof is formed as an air-confining structure.
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