US Patent 7938112 Apparatus for humidifying a respiratory gas

Apparatus for humidifying a respiratory gas includes a liquid storage space for storage of a liquid, a humidifying region for loading the respiratory gas with the liquid by the respiratory gas coming into contact in the humidifying region with the liquid, a respiratory gas supply device for supplying the respiratory gas to the humidifying region, a respiratory gas withdrawal device for withdrawal of the humidified respiratory gas from the humidifying region, and a partial-amount discharge device for passing a partial amount of the liquid stored in the liquid storage space into the humidifying region.