Multifunctional storage system having separate cleaning flow passage

A multifunctional storage system including a storage chamber and a machine chamber provided on one side of the storage chamber and in fluid communication with the storage chamber, the multifunctional storage system comprising:

• a humidifier including a circulation filter unit and configured to generate naturally humidified air with the circulation filter unit;
• a dehumidifier including a heat pump module and configured to generate dried air with the heat pump module;
• a cleaning filter unit configured to purify exterior air;
• a first flow passage, in which the humidifier and the dehumidifier are embedded, configured such that the naturally humidified air or the dried air flows therethrough;
• a second flow passage configured such that the exterior air filtered by the cleaning filter unit flows therethrough;
• and
• a fan unit configured to circulate air,
• wherein the first flow passage and the second flow passage form flow passages that are independently formed and separated from each other, and are formed to be in communication with the fan unit,
• wherein the fan unit is in fluid communication with front ends of the first and second flow passages and provided with a passage-switching member to adjust fluid communication with the first and second flow passages,
• wherein the machine chamber is provided with an intake hole and an exhaust hole that communicate the exterior air with the machine chamber,
• wherein one side of the fan unit is in communication with the intake hole, an opposite side of the fan unit is in communication with the second flow passage, and the cleaning filter unit is provided on a side that is close to the intake hole,
• wherein the storage chamber comprises a circulation air inlet and a circulation air outlet that communicate the storage chamber with the machine chamber, and
• wherein the circulation air inlet is in communication with a rear end of the first flow passage, and the circulation air outlet is in communication with one side of the fan unit.