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A liquid chromatography apparatus includes a separation column, liquid feed pump which feeds eluent into the separation column, a detector which detects elution component fed from the separation column, and a plurality of valves which control a flow of liquid which passes from the liquid feed pump t

A liquid chromatography apparatus includes a separation column, liquid feed pump which feeds eluent into the separation column, a detector which detects elution component fed from the separation column, and a plurality of valves which control a flow of liquid which passes from the liquid feed pump to the detector via the separation column, wherein the liquid feed pump, the separation column, the detector, and the plurality of valves are disposed in a cooled portion within a first unit, and among the mechanical parts and the electrical parts that respectively form the liquid feed pump, the detector, and the plurality of valves, the electrical parts are disposed in a non-cooled portion within the first unit.

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What is claimed is: 1. A liquid chromatography apparatus comprising a separation column, a liquid feed pump which feeds eluent into the separation column, a detector which detects elution component fed from the separation column, and a plurality of valves which control a flow of liquid which passes

What is claimed is: 1. A liquid chromatography apparatus comprising a separation column, a liquid feed pump which feeds eluent into the separation column, a detector which detects elution component fed from the separation column, and a plurality of valves which control a flow of liquid which passes from the liquid feed pump to the detector via the separation column, wherein the liquid feed pump, the separation column, the detector, and the plurality of valves are disposed in a cooled portion within a first unit, and among the mechanical parts and the electrical parts that respectively form the liquid feed pump, the detector, and the plurality of valves, the electrical parts are disposed in a non-cooled portion within the first unit. 2. A liquid chromatography apparatus comprising a separation column, a liquid feed pump which feeds eluent into the separation column, a detector which detects elution component fed from the separation column, and a plurality of valves which control a flow of liquid which passes from the liquid feed pump to the detector via the separation column, wherein at least one part of each of the liquid feed pump, the detector and the plurality of valves, as well as the separation column are disposed in a cooled portion formed at the inside of a first unit, and at least one of parts which require supply of electricity of the liquid feed pump, the detector and the plurality of valves is disposed in a non-cooled portion formed at the inside of the first unit. 3. A liquid chromatography apparatus according to claim 1 or 2, wherein the liquid feed pump and the plurality of valves are arranged on an attached panel fitted in the cooled portion at the inside of the first unit. 4. A liquid chromatography apparatus according to claim 3, at least one part of the attached panel where the liquid feed pump and the plurality of valves are arranged is inclined. 5. A liquid chromatography apparatus according to claim 1 or 2, comprising a first unit which has an opening portion on the side to allow the cold air to pass through, a second unit which has an opening portion on the side to allow the cold air to pass through, and inside thereof is divided into upper and lower portions to preserve the sample, and a cooling apparatus, wherein the first unit, the second unit, and the cooling apparatus are attached to or removed from each other. 6. A liquid chromatography apparatus according to claim 5, comprising a cold air route, in which, cold air which flows out from a cold air flow out opening formed in the cooling apparatus flows through the inside of the second unit and returns to a cold air return opening formed in the cooling apparatus, via the cooled portion of the inside of the first unit and cold air ducts provided at the first unit and the second unit. 7. A liquid chromatography apparatus according to claim 6, comprising a deaeration chamber which is provided in the cold air duct at the first unit for removing dissolved gas in the eluent and/or the sample. 8. A liquid chromatography apparatus according to claim 6, comprising a heat sink which is provided in the cold air duct at the second unit for cooling the inside of the second unit. 9. A liquid chromatography apparatus according to claim 5, comprising packings which are provided to the circumferences of the opening portions which are formed at the first unit and the second unit to allow the cold air to pass through. 10. A liquid chromatography apparatus according to claim 5, wherein first doors of a hollow structure are provided at the first unit and the second unit, respectively. 11. A liquid chromatography apparatus according to claim 10, wherein a rib for reinforcing the hollow portion of the first door is arranged on one face plate constituting the hollow portion, and a gap is formed between the rib and another face plate. 12. A liquid chromatography apparatus according to claim 10, wherein a drying agent is enclosed in the hollow portion of the first door. 13. A liquid chromatography apparatus according to claim 10, at the inside of the first door provided at the second unit, second doors to maintain the coolness are provided in an upper portion and a lower portion of the second unit, respectively. 14. A liquid chromatography apparatus according to claim 5, wherein first doors of a hollow structure are provided at the first unit and the second unit, respectively, and a check valve for preventing outside air from flowing into the hollow structure of the first door is provided at the first door.