US 11,850,651 B2
Method of manufacturing a heat-humidity exchange plate of an enthalpy air-to-air exchanger
Radek Urban, Recany and Labem (CZ); Radim Vitek, Podhorany u Ronova (CZ); Filip Hazuka, Sec (CZ); and Jaroslav Chlup, Pardubice (CZ)
Assigned to RECUTECH s.r.o., Pardubice (CZ)
Filed by RECUTECH s.r.o., Pardubice (CZ)
Filed on Feb. 6, 2023, as Appl. No. 18/106,108.
Claims priority of application No. 22159700 (EP), filed on Mar. 2, 2022.
Prior Publication US 2023/0278094 A1, Sep. 7, 2023
Int. Cl. B21D 53/04 (2006.01)
CPC B21D 53/04 (2013.01) [Y10T 29/18 (2015.01)] 11 Claims
OG exemplary drawing
 
1. A method of manufacturing a heat and humidity exchange plate for an air-to-air counterflow enthalpy heat exchanger, the method comprising the following steps:
(a) continuously forming a supporting member of the exchange plate in a form of an expanded metal structure from a strip of metal foil by sitting the metal foil in a transverse direction, then stretching the metal foil in a longitudinal direction, and then rolling over an entire width of the strip of stretched metal foil;
(b) annealing the expanded metal structure;
(c) providing a vapour-permeable polymeric membrane on the annealed expanded metal structure;
(d) forming corrugated and embossed shaped elements on the annealed expanded metal structure with the vapour-permeable polymeric membrane applied thereon by means of omnidirectional deformation; and
(e) creating a circumferential shape of the exchange plate by removing excess edges from the annealed expanded metal structure with the vapour-permeable polymeric membranes.