Patent ID: 8813744

Claim:
A temperature compensation unit for an anesthetic vaporizer, which cooperates with a vaporizing chamber having a bottom wall, comprising: a first device comprising a first valve seat that has a bottom portion, which is hermetically connected to the bottom wall of the vaporizing chamber, such that at least a part of the bottom portion of the first valve seat contacts a liquid anesthetic agent in the vaporizing chamber, wherein at least the bottom portion of the first valve seat changes in length according to temperature changes in the liquid anesthetic agent that is in direct contact with at least the part of the bottom portion of the first valve seat to change a flow rate by moving at least the first valve seat to compensate for the temperature changes in the liquid anesthetic agent; a second device connected to the vaporizing chamber; and a gas flow gap through which a gas flow passes, wherein the gas flow gap is formed between the first device and the second device, and the gas flow gap becomes larger as temperature of the liquid anesthetic agent rises and smaller as the temperature of the liquid anesthetic agent drops.