| 摘要 |
PURPOSE:To make compact the whole structure of a heat exchanger device by forming fins of a heat exchanger unit with a high thermal conductivity material, such as copper and constituting water flow tubes or fins in a sub-heat exchanger unit with highly corrosion resistant materials, such as aluminum alloy. CONSTITUTION:Water flow tubes 11 in a main heat exchanger unit 1a are constructed with three stages where each stage is meanderingly laid out laterally in two or three rows. The water flow tubes 11 and fins 12a into which the water flow tubes are penetrated are formed with copper which is a high conductivity material. The water flow tubes 11 in the other sub-heat exchanger unit 1b are meanderingly laid out laterally in three rows under one stage structure. The water flow tubes 11 and the fins 12b into which the tubes are penetrated are formed with aluminum alloy which is excellent in corrosion resistance. The adoption of the fins 12 of a highly thermal conductivity material makes it possible to reduce the size of the main heat exchanger unit 1a, and compact the whole structure of the heat exchanger device. |
