Patent ID: 11885824
Assignee: HITACHI HIGH-TECH CORPORATION
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. An automatic analyzer, comprising:
a reagent cooler, having a lid, that stores a reagent vessel containing a reagent to be reacted with a sample at a predetermined temperature;
a reagent vessel replacement unit that includes an opening in the lid configured to insert the reagent vessel into and remove the reagent vessel out of the reagent cooler, the reagent vessel replacement unit having a top plate and a bottom plate parallel to the top plate spaced apart in a vertical direction to accommodate the insertion of the reagent vessel;
a negative pressure chamber that covers the entire reagent cooler to maintain an airtight chamber, the negative pressure chamber including a blower fan configured to create a negative pressure in the negative pressure chamber thereby positively pressurizing an inside of the reagent cooler with respect to the negative pressure chamber; and
a controller coupled to the reagent vessel replacement unit and the blower fan,
wherein the controller is configured to control the blower fan based on the heights of the top plate and the bottom plate.