Patent ID: 9565969
Date: 2017-02-14
CPC Classifications: A47J,F24H,H01C,H05B,Y10T

Claim:
1. A section bar for a fluid flow heater, in particular for coffee machines, having a longitudinal development of predefined length, greater than any dimension of a cross-section of the section bar, with two opposite ends, defining a first tubular longitudinal cavity, with openings in said opposite ends, and a second cavity having a lateral opening, which extends along the longitudinal development of the section bar, configured to house a tubular fluid circulation duct by means of insertion in a transversal direction with respect to said longitudinal development, said first and second cavities being placed side by side according to a first plane, (α) said second cavity being U-shaped or J-shaped, said second cavity comprising a single lug oriented such as to define a direction of insertion for said tubular duct or a pair of lugs which are parallel to each other and define a direction of insertion for said tubular duct of fluid circulation, characterised in that said single lug or said pair of lugs have a smaller thickness with respect to a thickness of a perimeter wall defining said first cavity; wherein said perimeter wall defining said first cavity includes a cylindrical outer surface extending for more than half of a circumference of said first cavity and defining a continuous uniform thickness of said perimeter wall; wherein said first cavity comprises a resistance wire and an insulating material axially inserted; wherein said second cavity comprises at least one channel in the portion adjacent to the first cavity, and wherein said at least one channel is adapted for injecting a paste or for injecting a wire of filler material which is brazed in order to improve the transmission of heat between the resistance wire in the first cavity and the tubular fluid circulation duct inserted in the second cavity.