PROBLEM TO BE SOLVED: To provide a thawing machine having high efficiency of heat exchange, free from temperature irregularities, and capable of thawing a thawing object in a short time.SOLUTION: A thawing machine 1 for performing radiational cooling of a thawing object includes thawing materials 110, 120 containing water and having fluidity, storage parts 11, 12 storing the thawing materials in each single space formed of a material having thermal conductivity, and each having a size for covering at least one side face of the thawing object, and a fixing member 31 for fixing the storage parts and the thawing object so that the storage parts adhere to the thawing object.SELECTED DRAWING: Figure 1【課題】熱交換の効率が高く、温度ムラがなく、短時間で解凍対象物を解凍することができる解凍機を提供する。【解決手段】解凍対象物の放冷を行なう解凍機１であって、水を含有し、流動性を有する解凍材１１０、１２０と、熱伝導性を有する材料で形成された単一の空間に前記解凍材を収容し、少なくとも前記解凍対象物の一側面を覆う大きさを有する収容部１１、１２と、前記収容部が前記解凍対象物に密着するように前記収容部および前記解凍対象物を固定する固定部材３１と、を備える。【選択図】図１
