COMBINED HEAT EXCHANGER

• Main Author: KAWAKAMI HIRONOBU
• Format: Patent
• Language: English; Japanese
• Published: 03.09.2015
• Subjects: BLASTING; COOLING OF INTERNAL-COMBUSTION ENGINES; COOLING OF MACHINES OR ENGINES IN GENERAL; DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OFGENERAL APPLICATION; ENGINE PLANTS IN GENERAL; HEAT EXCHANGE IN GENERAL; HEATING; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; STEAM ENGINES; WEAPONS

PROBLEM TO BE SOLVED: To provide a combined heat exchanger in which a second heat exchanger and a third heat exchanger are disposed upstream of a first heat exchanger, capable of improving the cooling performance of one of the second heat exchanger and the third heat exchanger.SOLUTION: According to the present invention, the combined heat exchanger comprises: the first heat exchanger implementing heat exchange with air; the second heat exchanger disposed at a position upstream of the first heat exchanger and implementing heat exchange with the air; and the third heat exchanger disposed at a position that is upstream of the first exchanger and that does not overlap the position of the second heat exchanger and implementing heat exchange with the air, the first to third heat exchangers each including a plurality of tubes disposed to be spaced apart and corrugated fins provided between the adjacent tubes, the first to third heat exchangers each implementing heat exchange between the air passing through the heat exchanger and each refrigerant flowing in the tubes, a fin interval of the first heat exchanger in a region facing the second heat exchanger being set different from a fin interval of the first heat exchanger in a region facing the third heat exchanger. 【課題】第１熱交換器の上流に第２熱交換器と第３熱交換器を配置した複合熱交換器において、第２熱交換器と第３熱交換器のいずれか一方の冷却性能を向上させることのできる複合熱交換器の提供を目的とする。【解決手段】本発明では、空気との間で熱交換を行う第１熱交換器と、第１熱交換器の上流位置に配置され、空気との間で熱交換を行う第２熱交換器と、第１熱交換器の上流位置で、第２熱交換器と重ならない位置に配置され、空気との間で熱交換を行う第３熱交換器とを備える複合熱交換器であって、第１〜３熱交換器は、間隔を置いて配置された複数のチューブと、隣接するチューブの間に設ける波形のフィンを備え、第１〜３熱交換器を通る空気とチューブ内を流れる各冷媒との間でそれぞれ熱交換を行い、第２熱交換器に対向する領域の第１熱交換器のフィン間隔と、第３熱交換器に対向する領域の第１熱交換器のフィン間隔とを異ならせたことを特徴とする。【選択図】図２