| 摘要 |
PROBLEM TO BE SOLVED: To improve heat transfer efficiency between a column holding member and an analytical column, and to reduce heat discharge from the column holding member in a column oven.SOLUTION: A column holding part 4 includes a space 6 for accommodating an analytical column 8 inside. The space 6 has an opening on the side face of the column holding part 4, and into which the analytical column 8 is inserted from the opening to be accommodated. The space 6 has the cross-sectional shape uniform from the upstream end to the downstream end in a flow direction of the analytical column 8. The cross-sectional shape of a wall surface inside the space 6 has a hollow part hollowed while curving further downward than the lower end of the opening on the side face of the column holding part 4, and formed so as to reach the uppermost part by drawing a part of an involute curve from the start point S of the hollow part. |
