| 摘要 |
PURPOSE: A capillary tube, a case structure, and a method for welding a capillary tube are provided to improve anti-corrosion of a capillary tube and to reduce manufacturing costs by forming the capillary tube with an aluminum material. CONSTITUTION: A capillary tube is formed by an aluminum material and comprises a first capillary tube(60) and a second capillary tube(50). The diameter of the first capillary tube is larger than the second capillary tube. Both first and second capillary tubes are connected by an adapter(70). The first capillary tube is arranged in a condenser side and the second capillary tube is arranged in an evaporator side.
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