(19)
(11) EP 4 107 431 A1

(12)

(43) Date of publication:
28.12.2022 Bulletin 2022/52

(21) Application number: 21757228.8

(22) Date of filing: 18.02.2021
(51) International Patent Classification (IPC): 
F24B 5/02(2006.01)
F24B 1/191(2006.01)
F23L 9/02(2006.01)
F23B 60/02(2006.01)
 F24B 1/19(2006.01)
F23L 1/02(2006.01)
F23L 15/00(2006.01)
(52) Cooperative Patent Classification (CPC):
F23L 1/02; F24B 1/191; F23L 15/00; F24B 1/19; F23B 60/02; F23L 9/02; F24B 5/026; F23C 6/04; F23C 2900/06041; Y02E 20/34
(86) International application number:
PCT/FI2021/050117
(87) International publication number:
WO 2021/165578 (26.08.2021 Gazette 2021/34)
(84) Designated Contracting States:
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 States:
BA ME
Designated Validation States:
KH MA MD TN

(30) Priority: 21.02.2020 FI 20205176

(71) Applicant: NPI-Engineering Oy
20360 Turku (FI)

(72) Inventors:
  • NIELIKÄINEN, Janne
    32200 Loimaa (FI)
  • IMMONEN, Tuomas
    20810 Turku (FI)

(74) Representative: Berggren Oy 
P.O. Box 16 Eteläinen Rautatiekatu 10A
00101 Helsinki
00101 Helsinki (FI)

   


(54) A COMBUSTION AIR CASSETTE, A FIREPLACE WITH A COMBUSTION AIR CASSETTE, A METHOD FOR SUPPLYING COMBUSTION AIR, AND A KIT FOR RETROFITTING A COMBUSTION AIR CASSETTE