Patent ID: 8047273

Claim:
A micro heat exchanger for the transfer of high area-specific amounts of heat from a heat source to a heat transfer medium comprising: a) a heat transfer structure with b) an inlet duct structure ( 1 ) and an outlet duct structure ( 2 ) each having a distribution volume ( 5 , 6 ) with an inlet ( 7 ) and an outlet ( 8 ), respectively, for conducting a heat transfer medium through the micro heat exchanger, the distribution volumes ( 5 , 6 ) being in communication with the inlet and outlet ducts ( 1 , 2 ) formed by opposite spaced walls ( 4 ) having a large height-to-width ratio, a cover ( 13 ) of a heat conducting material forming a heat transfer area, the walls between the inlet and the outlet flow duct structures having adjacent the cover ( 13 ) narrow transverse flow passages ( 3 ) of a flow cross-section which is small when compared with the flow cross-section of the inlet and outlet duct structures ( 1 , 2 ), so that a flow medium has a low speed with little pressure loss in the inlet and outlet duct structures ( 1 , 2 ) but flows at high speed through the relatively short narrow flow passages ( 3 ) where the flow medium flows along the cover ( 13 ) of heat ducting material for high heat transfer between the cover ( 13 ) and the flow medium, c) the narrow flow passages ( 3 ) extending between the inlet and outlet duct structures ( 1 , 2 ) forming the only communication paths between the inlet and outlet duct structures ( 1 , 2 ) for the heat transfer medium, and d) said inlet and outlet duct structures ( 1 , 2 ) being arranged intertwined in an alternating order in the transfer area in close proximity to the heat source extending over the whole cover area.