Patent ID: 8663979

Claim:
A culture apparatus comprising: an inner box configured to form a culture chamber in which culture is cultured; an outer box configured to cover the inner box; a fan disposed in the inner box and configured to circulate gas inside the culture chamber through an air passage provided in the inner box within the culture chamber; a first through hole configured to penetrate a wall configuring a part of the air passage in the inner box; a second through hole configured to penetrate the wall and disposed at a position at which a flow velocity of the gas circulated through the air passage by the fan is lower than a flow velocity of the gas around the first through hole; a connecting pipe configured to connect the first through hole and the second through hole outside of the inner box in a manner allowing fluid communication of the gas in the culture chamber; and a sensor configured to detect a concentration of the gas flowing in the culture chamber, wherein the first and second through holes are formed on a same wall among the walls configuring the inner box in a manner such that the first through hole is provided on an upstream side of a direction of flow of the gas in the air passage within the culture chamber and the second through hole is provided on a downstream side of the direction of flow, and wherein the culture apparatus is configured such that the gas in the connecting pipe flows from the second through hole to the first through hole.