| 摘要 |
PURPOSE: A parallel heat exchange system is provided to achieve an improved efficiency of uniform heat exchange throughout the system. CONSTITUTION: A system comprises an inlet pipe(11), an outlet pipe(12), a plurality of flat pipes(13) and a plurality of cooling fins(15). The inlet pipe and the outlet pipe are integrally arranged in parallel. The flat pipes are arranged beneath the inlet and outlet pipes at a predetermined spacing in lengthwise direction of the inlet and outlet pipes, and have refrigerant passages for guiding the refrigerant from the inlet pipe toward the outlet pipe. The refrigerant passages are U-shaped so as to allow a uniform and superior efficiency of heat exchange from an upper end toward the lower end of the flat pipe. The refrigerant passages have lower ends constituted by a connection pipe(14) arranged beneath the flat pipe in such a manner as to be parallel with the inlet and outlet pipes. Since the refrigerant passages are U-shaped, the air passing through the heat exchange system is heat-exchanged two time. Further, the refrigerant of the first and second refrigerant passages arranged in parallel have opposite refrigerant temperature distribution, thereby allowing a uniform efficiency of heat exchange through the flat pipe.
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