Patent ID: 11885574
Assignee: SPX FLOW TECHNOLOGY DANMARK A/S
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F  B | IPC B  F

Claim 0:
1. A method of fabricating a hygienic food product heat exchanger, the method comprising the steps of:
assembling a tube bundle having a plurality of tubes with a first tube plate, the assembling step includes:
inserting a respective first end of each tube of the tube bundle through a corresponding hole in the first tube plate, the first end passing from a first side of the first tube plate, through the first tube plate until flush with a second side of the first tube plate;

hygienically welding each first end of each tube at the second side of the first tube plate, wherein each weld smoothly translates between the second side of the first tube plate and an interior surface of each respective tube; and
hygienically welding each tube at interface between an outer surface of each tube and an edge of the corresponding hole in the first side of the first tube plate, wherein each weld is created from inside the respective tube and smoothly translates between the first side of the first tube plate and the outer surface of each respective tube, wherein each weld extends along a complete circumference of each respective tube, wherein the fabricated hygienic food product heat exchanger is hygienic and free of cracks, crevices and fissures both inside and outside of the hygienic food product heat exchanger.