Improved heat exchanger with concentric tubes

Abstract

The exchanger comprises a cylindrical tube (1) for circulation of a product provided with a flanged inlet (11) and a flanged outlet (12) of the product; a hollow body (2) concentric internally of the tube (1), in which the exchange fluid circulates, defining internally thereof preferential pathways for an outward and a return run of the exchange fluid and having the inlet and the outlet of the exchange fluid arranged at a same end of and in proximity of an end of the tube; a flanged inlet connector (3) for introducing the product into the tube (1), a flange (3a) of which connects with an inlet flange (11a) of the inlet (11) of the tube; a flanged outlet connector (4) for extracting the product from the tube (1), a flange (4a) of which connects with a flange (12a) of the outlet (12) of the tube; an intermediate flange (5), connected to the end of the hollow body exhibiting the inlet and outlet of the fluid and projecting from the tube (1), which is provided with a passage hole (5c) for the product to be treated and with an inlet mouth (5a) and an outlet mouth (5b) for the exchange fluid connected respectively to the outward and return pathway of the exchange fluid; the passage hole (5c), inlet mouth (5a) and outlet mouth (5b) not being in reciprocal connection.

Description

technical field [0001] The present invention relates to heat exchangers with improved concentric tubes. The invention relates in particular to a heat exchanger for the heating or cooling treatment of liquid food products, either containing solid parts or not, but in any case easy to pump, wherein the product to be treated is in a long cylinder shaped tubes, the outside of which is provided with a heating / cooling blanket in which a heating or cooling fluid, commonly known as heat exchange fluid, is circulated. The heat exchange fluid is usually hot water or cooling water. In these types of heat exchangers, inside the tubes of the product circulation there is arranged an axial hollow body into which the heat exchange fluid is introduced. The hollow body is generally configured to define preferred paths for the outflow and return flow of the heat exchange fluid, respectively, and the hollow body is configured to have channels for the heat exchange fluid arranged at the same end...

AI Technical Summary

Problems solved by technology

Because the hollow body has supports that keep the hollow body coaxial with the tube into which it is inserted, this removal can lead to the formation of scratches on the inside of the cylindrical tube

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