Heat exchanger

Abstract

Disclosed is a heat exchanger for fluids, particularly hydraulic oil, comprising a housing ( 1 ) in which fluid ducts ( 4 ) and coolant ducts ( 5 ) alternate and which is equipped with an inlet ( 8 ) for hot fluid, an outlet for cooled fluid as well as an inlet and an outlet ( 10 ) for the coolant. An internal cylinder chamber ( 7 ) that is lined by a fluid filter ( 13 ) on the circumference thereof is provided inside the housing. The delivered hot fluid or the discharged cooled fluid is fed into or discharged from the fluid ducts via said fluid filter ( 13 ).

1 . A heat exchanger for fluids, in particular hydraulic oil, having a housing ( 1 ) in which fluid conduits ( 4 ) and coolant conduits ( 5 ) alternate with one another, in which the housing has an inlet ( 8 ) for hot fluid, an outlet for cooled fluid, and one inlet and one outlet ( 10 ) for the coolant, characterized in that in the housing ( 1 ), an internal cylindrical chamber ( 7 ,  7 ′) is provided, which is lined on its circumference by a fluid filter ( 13 ), by way of which the inflowing hot fluid or the outflowing cooled fluid enters or emerges from the fluid conduits ( 4 ,  4 ′,  4 ″). 
   
   
       2 . The heat exchanger as defined by  claim 1 , characterized in that the housing ( 1 ) is formed by an essentially block shaped packet comprising plates ( 2 ,  3 ) that define horizontal fluid conduits ( 4 ) and coolant conduits ( 5 ), which plates are penetrated by the cylindrical chamber ( 7 ) and by both a coolant conduit ( 6 ) and a fluid outlet conduit ( 12 ). 
   
   
       3 . The heat exchanger as defined by  claim 1 , characterized in that the housing ( 1 ′) is formed by a cylindrical body, in which the fluid conduits ( 4 ′,  4 ″,  4 ′″) and the coolant conduits ( 5 ,  5 ′) are embodied in the form of rings of axially extending conduits, and one or more outer rings of fluid conduits ( 4 ″,  4 ′″) discharge at the face end of the housing toward the fluid inlet, and on the top of the cylindrical chamber ( 7 ′), a deflection from the inner fluid outlet conduit ( 4 ′) to the outer fluid outlet conduit or outer fluid outlet conduits ( 4 ′,  4 ′″) is provided.