COOLING PLATE, METHOD FOR MANUFACTURING THE SAME, AND MOTOR EQUIPPED WITH THE SAME

To provide a cooling plate high in cooling efficiency by a simpler method.SOLUTION: A method for manufacturing a cooling plate 21 equipped with a metal pipe through which a cooling liquid flows to a plate-like heat conductor 22 comprises: forming a pipe storage groove 23 substantially larger in diameter than the metal pipe on at least one surface 22a of the heat conductor 22 along a piping path of the metal pipe; storing the metal pipe in the pipe storage groove 23; sealing water in the metal pipe to cause freezing at a temperature of 0°C or lower; and then expanding the diameter of the metal pipe from inside to bond it to the pipe storage groove.SELECTED DRAWING: Figure 2 【課題】より簡単な方法にて冷却効率の高い冷却板を得る。【解決手段】板状の熱伝導体２２に冷却液が流される金属パイプを備える冷却板２１の製造方法において、熱伝導体２２の少なくとも一方の面２２ａに金属パイプの配管経路に沿って金属パイプの外径よりも実質的に大径のパイプ収納溝２３を形成し、上記パイプ収納溝２３内に上記金属パイプを収納するとともに、上記金属パイプ内に水を封入して０℃以下の温度で凍結させることにより、上記金属パイプを内側から拡径して上記パイプ収納溝に密着させる。【選択図】図２