Absorption arrangement with a CO2 absorber and a water trap and process for filtering out CO2

A ventilation system for artificial respiration of a patient, the ventilation system comprising:

• a ventilator;
• a patient-side coupling unit positionable in or on or at the body of the patient;
• an inspiratory fluid connection;
• an expiratory fluid connection, wherein the ventilator is connected to the patient-side coupling unit by the inspiratory fluid connection and by the expiratory fluid connection and the ventilator is configured to deliver a gas mixture through the inspiratory fluid connection to the patient-side coupling unit;
• and
• an absorption arrangement comprising:
• a CO2 absorber configured to absorb carbon dioxide so as to filter out carbon dioxide from a gas mixture flowing through the CO2 absorber and comprising CO2 absorption material, a supply fluid guide unit, a lower deflecting fluid guide unit, and an upper deflecting fluid guide unit;
• a water trap configured to receive moisture;
• a discharge fluid guide unit configured to be connected to the ventilator;
• and
• a connecting fluid guide unit connecting the CO2 absorber to the water trap,
• wherein the supply fluid guide unit is configured to be connected to the patient-side coupling unit,
• wherein the ventilation system is configured such that a gas mixture flows from the patient-side coupling unit through the expiratory fluid connection to the ventilator and flows through the absorption arrangement when flowing through the expiratory fluid connection,
• wherein the absorption arrangement is configured such that the gas mixture flows from the patient-side coupling unit first through the supply fluid guide unit, subsequently through the lower deflecting fluid guide unit, subsequently through the CO2 absorption material, subsequently through the upper deflecting fluid guide unit, subsequently through the connecting fluid guide unit, subsequently through the water trap, and subsequently through the discharge fluid guide unit to the ventilator,
• wherein the absorption arrangement is configured such that in an operative state the gas mixture is deflected by the lower deflecting fluid guide unit to flow vertically or obliquely upwards through the CO2 absorption material and is deflected by the upper deflecting fluid guide unit to flow vertically or obliquely downwards through the connecting fluid guide unit to the water trap.

A process for filtering carbon dioxide from a gas mixture using an absorption arrangement, which absorption arrangement comprises a CO2 absorber, a water trap, a discharge fluid guide unit, and a connecting fluid guide unit, wherein the connecting fluid guide unit connects the CO2 absorber to the water trap, the CO2 absorber comprising CO2 absorption material, a supply fluid guide unit, a lower deflecting fluid guide unit, and an upper deflecting fluid guide unit, the process comprising the steps of:

• guiding the gas mixture from a source to the supply fluid guide unit;
• guiding the gas mixture through the supply fluid guide unit to the lower deflecting fluid guide unit;
• deflecting the gas mixture by the lower deflecting fluid guide unit such that the deflected gas mixture flows vertically or obliquely upwards;
• guiding the gas mixture vertically or obliquely upwards through the CO2 absorption material;
• deflecting the gas mixture by the upper deflecting fluid guide unit such that the deflected gas mixture flows vertically or obliquely downwards;
• guiding the gas mixture vertically or obliquely downwards through the connecting fluid guide unit to the water trap;
• causing the gas mixture to flow through the water trap;
• guiding the gas mixture through the discharge fluid guide unit;
• guiding the gas mixture from the discharge fluid guide unit to a sink;
• and
• as the gas mixture flows through the CO2 absorption material, absorbing carbon dioxide with the CO2 absorption material to filter carbon dioxide from the gas mixture.