Patent ID: 7459123

Claim:
An automatic analyzer comprising: a reaction cell for mixing a sample and a reagent therein; a constant temperature bath for holding water in which said reaction cell is immersed; a photometer for measuring target components in a sample; a suction pipe for sucking the water in said constant temperature bath; a return pipe for returning the water to said constant temperature bath; a pump disposed between said suction pipe and said return pipe and circulating the water; a heater for heating the water circulated in said constant temperature bath by said pump; a sub-channel for cooling a lamp of said photometer, said sub-channel disposed between said suction pipe and said return pipe; and an air-bubble removing unit disposed at said sub-channel, having a water-tight structure to hold the constant temperature bath water therein, and removing air bubbles based on a difference in specific gravity between the water and the air bubbles.