초록 ▼

The invention concerns a heat exchanger comprising a heat exchanger block having a plurality of tubes and fins arranged transversely to the tubes, at least one tube plate and a water tank, both made of a synthetic plastic material. The tube plate has orifices to receive the ends of the tubes and the

The invention concerns a heat exchanger comprising a heat exchanger block having a plurality of tubes and fins arranged transversely to the tubes, at least one tube plate and a water tank, both made of a synthetic plastic material. The tube plate has orifices to receive the ends of the tubes and the water tank is fastened in a water tight manner to the tube plate. In order to obtain a simple and reliable joint of the heat exchanger tubes with the tube plate and the water tank with the tube plate, the plastic tube plate is provided on one side with projections. The orifices are located in these projections and the ends of the tubes are mounted in these orifices by expansion in the radial direction or impression in the axial direction. Both the tube plate and the water tank are equipped with flat surfaces at their edges. These surfaces rest on each other and the tube plate is joined with the water tank by vibration welding on these surfaces.

대표청구항 ▼

A heat exchanger comprising: at least one tube plate comprising synthetic resin material, said tube plate including one side having a plurality of projections, a plurality of orifices located, respectively, in said projections, and an edge area having a first continuous flat surface; a plurality of

A heat exchanger comprising: at least one tube plate comprising synthetic resin material, said tube plate including one side having a plurality of projections, a plurality of orifices located, respectively, in said projections, and an edge area having a first continuous flat surface; a plurality of tubes, said tubes having ends mounted, respectively, in said orifices, said tube ends being pressure fitted into said orifices; a plurality of fins connected to said tubes, said fins and said tubes defining a heat exchanger block; a water tank comprising synthetic resin material and having a rim with a second continuous flat surface resting on said first continuous flat surface of said tube plate; a first vibration weld for connecting said first and second continuous flat surfaces, and disposed between the first and second surfaces; at least one side groove formed along at least one of said flat surfaces, wherein said first vibration weld includes a weld bead disposed in said groove.