| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat exchanger capable of further uniforming the amount of refrigerant flowing in all of heat exchange tubes. SOLUTION: Front and back two outer bulging portions 54A, 54B extending in the lateral direction are formed on an outer plate 36 of this heat exchanger 30. Each of the outer bulging portions 54A, 54B of a lower header tank 32 acts as the outer bulging portion for circulating a refrigerant. First refrigerant circulating portions 55A, 55B for allowing the refrigerant to flow in the lateral direction are formed in the outer bulging portion for circulating the refrigerant. A communication hole 44 of an intermediate plate 38 communicated to the first refrigerant circulating portions 55A, 55B of the outer bulging portions 54A, 54B is communicated by a communicating portion 46, and second refrigerant circulating portions 60A, 60B for allowing the refrigerant to flow in the lateral direction are formed on the intermediate plate 38 by the communication hole 44 and the communicating portion 46 communicated with the first refrigerant circulating portions 55A, 55B. Throttle portions 61A, 61B for reducing a total sectional area of the first refrigerant circulating portions 55A, 55B and the second refrigerant circulating portions 60A, 60B are disposed in the outer bulging portions 54A, 54B of the lower header tank 32. COPYRIGHT: (C)2008,JPO&INPIT
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