Patent ID: 8375942

Claim:
A respiration device for providing moistened breathing gas, the device comprising: a mixing chamber; a gas inlet feeding incoming gas that is to be moistened to said mixing chamber; a gas outlet supplying moistened outgoing gas from said mixing chamber; a moisture feed means including a dispensing pump feeding a quantity of liquid that is to be evaporated to an evaporating device and evaporating the fed liquid in the evaporating device to feed vapor with a vapor temperature to said mixing chamber; a control device for controlling the quantity of liquid fed to said evaporating device by said dispensing pump and controlling a heat output of said evaporating device such that the quantity of liquid fed will be evaporated and such that the vapor with the vapor temperature is generated at said evaporating device and is fed to said mixing chamber and setting an outlet desired temperature and an outlet moisture level of the outgoing gas, said control device determining a temperature of the outgoing gas that is to be expected at a given desired moisture, and said control device setting an outlet temperature of the outgoing gas to a temperature above the desired temperature when the temperature to be expected of the outgoing gas, at the set moisture level, is above the desired temperature.