Air supply device

An air supply device comprising:

• an enclosure having a sealed interior space for storing air therein;
• a pump provided outside the enclosure, the pump being configured to supply air to the interior space of the enclosure;
• and
• a flow path switching unit including
• a pedestal part mounted inside the enclosure,
• a rotating part rotatably mounted on the pedestal part, the rotating part having an enclosure interior space communication portion and a groove portion, and
• a drive unit configured to rotate the rotating part,
• the enclosure including
• an air supply port for supplying air supplied from the pump to the interior space of the enclosure,
• an air discharge port for discharging air from the groove portion of the rotating part, and
• at least one object connection port for supplying air to or exhausting air from at least one object,
• the pedestal part including
• at least one first hole that is communicated to the at least one object connection port, and
• a second hole that is communicated to the air discharge port,
• the enclosure interior space communication portion being communicated to the air supply port through the interior space of the enclosure, and
• the groove portion being separated from the enclosure interior space communication portion.