US 12,330,227 B2
Method and a system for brazing a plate heat exchanger
Niclas Bornegård, Bjärred (SE)
Assigned to SWEP INTERNATIONAL AB, Landskrona (SE)
Appl. No. 18/015,851
Filed by SWEP INTERNATIONAL AB, Landskrona (SE)
PCT Filed Jul. 2, 2021, PCT No. PCT/SE2021/050665
§ 371(c)(1), (2) Date Jan. 12, 2023,
PCT Pub. No. WO2022/015216, PCT Pub. Date Jan. 20, 2022.
Claims priority of application No. 2050886-7 (SE), filed on Jul. 13, 2020.
Prior Publication US 2023/0256530 A1, Aug. 17, 2023
Int. Cl. B23K 1/00 (2006.01); B23K 1/008 (2006.01); B23K 1/012 (2006.01); B23K 3/08 (2006.01); F28D 9/00 (2006.01); F28F 3/08 (2006.01); B23K 101/14 (2006.01)
CPC B23K 1/0012 (2013.01) [B23K 1/008 (2013.01); B23K 1/012 (2013.01); B23K 3/085 (2013.01); F28D 9/0062 (2013.01); F28F 3/08 (2013.01); B23K 2101/14 (2018.08); F28F 2275/045 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A method for brazing a plate heat exchanger having a stack of heat exchanger plates with depressions and elevations forming interplate flow channels and port openings being in selective fluid communication with said interplate flow channels, the method comprising the steps of
a) placing the stack of heat exchanger plates on a support with holes, aligning port opening of the stack of heat exchanger plates with holes in the support, and placing the stack of heat exchanger plates in a heating chamber of a furnace,
b) conducting a gas for changing the temperature of the stack of heat exchanger plates through a plurality of nozzles inside the heating chamber, and
c) conducting gas from at least one of said nozzles into at least a first port opening of the port openings of the stack of heat exchanger plates through one of said holes in the support and thereby create a flow of gas through the interplate flow channels of the plate heat exchanger.