| 摘要 |
<p>PROBLEM TO BE SOLVED: To decrease the number of grooves of a vacuum insulation material used to provide a radiation pipe having a plurality of layers.SOLUTION: A refrigerator is configured so that a vacuum insulation material 316 and a radiation pipe 312 of a cooling system formed by bending and having a plurality of linear portions are accommodated in between an outer case 302 and an inner case 303, and so that a foamed heat insulation material is filled in between the outer case 302 and the inner case 303. The vacuum insulation material 316 constitutes vertical longitudinal grooves 317 and horizontal lateral grooves 318 formed to cover the outer case 302 with the radiation pipe 312, and is configured so that the different linear portions of the radiation pipe 312 are arranged in a groove on the same straight line. It is possible to suppress degradation in the heat insulation performance of the vacuum insulation material and improve the heat insulation performance of the refrigerator by providing the vacuum insulation material and the radiation pipe having a plurality of layers using a smaller number of grooves.</p> |
