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A tube/fin block for a heat exchanger has several tubes through which a heat transfer fluid can flow arranged side-by-side along a transverse direction of the block. Corrugated-fin complexes are inserted between respective adjacent tubes and are connected with the adjacent tubes. At least one of the

A tube/fin block for a heat exchanger has several tubes through which a heat transfer fluid can flow arranged side-by-side along a transverse direction of the block. Corrugated-fin complexes are inserted between respective adjacent tubes and are connected with the adjacent tubes. At least one of the corrugated fin-complexes is a double corrugated-fin complex with two corrugated-fin units arranged side-by-side in the transverse direction of the block. A particular manufacturing process for the tube/fin block is utilized. A heat insulation device is provided between the two corrugated fin units. A non-solderable spacer plate can be inserted between the two corrugated fin units and pulled out after the tube/fin block is soldered together so that a heat-insulating gap is formed. A plastic strip can be inserted into the heat-insulating gap as required. The block is appropriate for use, for example, in condensers and evaporators of motor vehicle air conditioners.

대표청구항 ▼

[ What is claimed is:] [1.] Tube/fin block for a heat exchanger comprising:several tubes, which are arranged side-by-side along a transverse direction of the block and through which a heat transfer fluid can flow,corrugated-fin complexes inserted between adjacent tubes of said several tubes and conn

[ What is claimed is:] [1.] Tube/fin block for a heat exchanger comprising:several tubes, which are arranged side-by-side along a transverse direction of the block and through which a heat transfer fluid can flow,corrugated-fin complexes inserted between adjacent tubes of said several tubes and connected with said adjacent tubes, at least one of said corrugated fin-complexes being a double corrugated-fin complex with two corrugated-fin units arranged side-by-side in the transverse direction of the block, anda heat insulation device provided between the two corrugated-fin units of the double corrugated-fin complex. [20.] Process for manufacturing a tube/fin block comprising the steps of:inserting corrugated-fin complexes between adjacent tubes,inserting a spacer plate made of a brazing-temperature resistant, non-solderable material between one pair of adjacent corrugated-fin complexes,brazing the tubes to the corrugated-fin complexes, andremoving the spacer plate from a soldered tube/fin block formed by soldering said tubes to produce a heat-insulating air gap between the adjacent corrugated-fin complexes.