Heat exchanger

Abstract

The invention relates to a heat exchanger ( 10 ) for heating flowable media, in particular highly viscous materials, coating materials, or the like, comprising a profile body ( 11, 12 ) having at least one flow channel segment ( 13, 14, 15, 16 ) of a flow channel of the heat exchanger, and a heating unit disposed in the profile body, wherein the heating unit comprises at least two electric heating elements ( 22, 24 ). A first heating element ( 22 ) is disposed in a heating element receptacle ( 23 ) formed in the profile body, and a second heating element ( 24 ) is disposed in a sleeve element ( 17 ) of the heating unit, wherein the sleeve element is disposed in the flow channel segment formed in the profile body, such that the heating elements are sealed against the flow channel.

1 . A heat exchanger for heating flowable media, in particular high-viscosity materials, coating materials, or the like, said heat exchanger comprising:
 a profile body having at least one flow channel section of a flow channel of the heat exchanger;   a heating device arranged in the profile body, the heating device having at least two electrical heating elements;   a first heating element of the heating device is arranged in a heating element receptacle implemented in the profile body; and   a second heating element of the heating device is arranged in a sleeve element of the heating device, the sleeve element being arranged in the flow channel section implemented in the profile body in such a manner that the heating elements are sealed in relation to the flow channel.   
     
     
         2 . The heat exchanger according to  claim 1 , in which the heat exchanger includes a plurality of profile bodies arranged in parallel. 
     
     
         3 . The heat exchanger according to  claim 1 , in which the heat exchanger includes a cover element and a base element, which are each arranged on profile ends of the profile body. 
     
     
         4 . The heat exchanger according to  claim 3 , in which attachment channels of the flow channel are implemented in at least one of the cover element and/or in the base element. 
     
     
         5 . The heat exchanger according to  claim 3 , in which at least one connection channel for the connection of flow channel sections is implemented in at least one of the cover element and in the base element. 
     
     
         6 . The heat exchanger according to  claim 3 , in which the sleeve element is fixedly connected to the cover element. 
     
     
         7 . The heat exchanger according to  claim 1 , in which the flow channel sections and the heating element receptacle are implemented as passage boreholes in the profile body in the longitudinal direction of the profile body. 
     
     
         8 . The heat exchanger according to  claim 7 , in which the sleeve element has a polygonal cross-section. 
     
     
         9 . The heat exchanger according to  claim 8 , in which the sleeve element has a peripheral surface, and a plurality of longitudinal grooves are distributed on a periphery of the peripheral surface in such a manner that the sleeve element has a star-shaped cross section. 
     
     
         10 . The heat exchanger according to  claim 8 , in which an external diameter of the sleeve element essentially corresponds to an internal diameter of the flow channel sections. 
     
     
         11 . The heat exchanger according to  claim 10 , in which a plurality of partial channels of the flow channel sections are implemented between the sleeve element and the profile body. 
     
     
         12 . The heat exchanger according to  claim 1 , in which the heat exchanger has heating elements in a ratio of two second heating elements to one first heating element. 
     
     
         13 . The heat exchanger according to  claim 1 , in which the heat exchanger has an attachment device for attaching the heating elements on the cover element. 
     
     
         14 . The heat exchanger according to  claim 1 , in which at least one temperature sensor is arranged in the flow channel. 
     
     
         15 . The heat exchanger according to  claim 1 , in which the flow channel is implemented as meandering. 
     
     
         16 . The heat exchanger according to  claim 1 , in which the heat exchanger has an insulation device.