A coffee bean wall breaking device is used to solve the problem caused by the conventional coffee bean wall breaking device in which a new carbon dioxide gas (and / or carbon dioxide liquid) is required to be provided again during each batch of wall breaking treatment. The coffee bean wall breaking device includes: a reactor having a raw bean processing space inside, the raw bean processing space communicates with an air inlet and an exhaust port, and a heating element is arranged on the outer peripheral surface of the reactor A carbon dioxide source, which is connected to the inlet of the reactor with an inlet pipe group, the inlet pipe group is provided with a first pump； a carbon dioxide recovery component, which is connected to the raw bean processing space and the delivery pipe group, respectively； Intake pipe group, the carbon dioxide recovery component includes a storage tank, the storage tank has a storage space inside； and the raw bean processing space has a volume, and the exhaust port has an opening area corresponding to each liter of raw beans The volume of the processing space. The opening area of the exhaust port is 0.25 to 32.5 cm.一種咖啡豆破壁裝置，係用以解決習知咖啡豆破壁裝置在每一批次的破壁處理時，都需要重新提供新的二氧化碳氣體（及/或二氧化碳液體）所造成的問題。該咖啡豆破壁裝置包含：一反應器，該反應器內部具有一生豆處理空間，該生豆處理空間連通一進氣口及一排氣口，一加熱件環設於該反應器的外周面；一個二氧化碳源，以一進氣管組連接該反應器的進氣口，該進氣管組設有一第一泵；一個二氧化碳回收組件，以一輸送管組分別連通該生豆處理空間及該進氣管組，該二氧化碳回收組件包含一貯存槽，該貯存槽內部具有一貯存空間；及其中，該生豆處理空間具有一容積，該排氣口具有一開口面積，對應每公升之生豆處理空間的容積，該排氣口的開口面積為0.25～32.5平方公分。
