Patent ID: 7775263
Filing Date: 2010-08-17
Classification: F28D,F28F

Abstract:
1. A heat exchanger comprising: a plurality of tubes whose both ends are combined to an upper header and a lower header, the tubes being divided into a left heat exchange part and a right heat exchange part; an upper tank having a first tank combined to the upper header and a second tank embedded in the first tank, the first tank having an inlet pipe and an outlet pipe, the second tank having a pair of guiding parts dividing the inner space of the first tank into a supply chamber fluidically communicated with the tubes and a discharge chamber fluidically communicated with a return pipe in relation with a partitioning wall to thereby supply heat exchange medium received through an inlet pipe to the tubes of the left heat exchange part and the right heat exchange part and discharge the heat exchange medium, which is returned through the return pipe mounted in parallel with the tubes after passing through the tubes, to an outlet pipe; heat exchange medium controlling means rotatably mounted on the guiding parts so as to independently operated by an external driving force, and adapted to control the volume of the heat exchange medium supplied to the tubes of the left heat exchange part and the right heat exchange part through the supply chamber from the inlet pipe; and a lower tank combined to the lower header for returning the heat exchange medium discharged from the tubes of the left heat exchange part and the right heat exchange part to the return pipe; wherein the guiding part includes: a supply passageway and a discharge passageway partitioned by a bulkhead formed therein, the supply passageway having an introduction hole formed on the bottom thereof and fluidically communicating with the supply chamber, the discharge passageway fluidically communicating with the return pipe; and an inlet passageway and an outlet passageway formed in a circumferential direction of one side of the supply passageway, the inlet passageway fluidically communicating with the inlet pipe, the outlet passageway fluidically communicating with the outlet pipe; and wherein the guiding parts are formed to be spaced apart from the upper part of the second tank to form the supply chambers between the upper part of the second tank and the guiding parts; and wherein the second tank has a plurality of supply holes to uniformly supply the heat exchange medium, which is introduced to the supply chambers, to each of the tubes arranged in the lower part of the second tank.