EP 4256901 A1 20231011 - A METHOD AND PIECE OF EQUIPMENT FOR MANUFACTURING AN AIR HEATING DEVICE, AS WELL AS THE AIR HEATING DEVICE
Title (en)
A METHOD AND PIECE OF EQUIPMENT FOR MANUFACTURING AN AIR HEATING DEVICE, AS WELL AS THE AIR HEATING DEVICE
Title (de)
VERFAHREN UND AUSRÜSTUNG ZUR HERSTELLUNG EINER LUFTHEIZVORRICHTUNG SOWIE LUFTHEIZVORRICHTUNG
Title (fr)
PROCÉDÉ ET PIÈCE D'ÉQUIPEMENT DE FABRICATION D'UN DISPOSITIF DE CHAUFFAGE D'AIR, AINSI QUE DISPOSITIF DE CHAUFFAGE D'AIR
Publication
Application
Priority
- IT 202000030059 A 20201204
- IB 2021060581 W 20211116
Abstract (en)
[origin: WO2022118122A1] A method of manufacturing an air heating device (1), comprising the steps of preparing a support (2) extending along a main axis (A), a first resistance wire (3) and a second resistance wire (4), helically winding the first resistance wire (3) around the support (2) so as to create a first winding (W1) extending along the main axis (A) with a first feeding pitch (p1) and helically winding the second resistance wire (4) around the support (2) so as to create a second winding (W2) extending along the main axis (A). The second winding (W2) comprises a first portion (W2') arranged in parallel, both electrically and physically, to the first winding (W1 ) and with a pitch corresponding to the first pitch (p1 ), so that there is a coil of the second winding (W2) between two adjacent coils of the first winding (W1) and a second portion (W2'') arranged electrically in series to the first portion (W2') and physically in series to the first winding (W1), wherein the second portion (W2'') has a second pitch (p2) that is shorter than the first pitch (p1 ).
IPC 8 full level
H05B 3/16 (2006.01)
CPC (source: EP)
H05B 3/16 (2013.01); H05B 2203/022 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
DOCDB simple family (application)
IB 2021060581 W 20211116; EP 21810437 A 20211116