Automatic analyzer

An automatic analyzer that performs analysis by mixing a reagent and a sample, the automatic analyzer comprising:

• a reagent cooler that stores a reagent vessel, the reagent cooler having an outer wall, an inner wall inside the outer wall and a lid with an aspiration hole;
• a refrigerant pipe that is disposed inside an outer wall of the reagent cooler and that circulates a refrigerant inside the outer wall;
• a blowing pipe that is disposed inside the outer wall and that guides outside air existing outside the reagent cooler to inside of the reagent cooler, the blowing pipe having an intake port and a blowing port respectively attached to a start end thereof and to a terminal end thereof;
• and
• a blowing unit that is disposed at the blowing pipe between the intake port and the blowing port and that diffuses the outside air into the inside of the reagent cooler through the blowing pipe and the blowing port, wherein
• a pipe having a terminal end outside the reagent cooler is connected to the blowing pipe,
• the pipe includes a small diameter pipe connected to the blowing pipe between the intake port and the blowing port and a large diameter pipe having a diameter larger than that of the small diameter pipe, provided at a bottom of the reagent cooler and connected to the small diameter pipe, and
• the large diameter pipe has the terminal end outside the reagent cooler.