The invention concerns an assembly suitable for diffusing a composition in the ambient air, and which comprises a central part for receiving a mixture of a combustible liquid and the composition to be diffused, a vaporisation zone for being supplied with the mixture by the central part and comprising a zone for diffusing the composition in the air, and a catalytic combustion burner zone, including a catalyst, that heats the vaporisation zone.This assembly is characterised in that it also comprises an element that conducts heat, is impermeable to any liquid and forms a separation between the burner and the vaporisation zone, the latter zone being adapted to release combustible vapours in the air, and the burner zone being adapted to burn these vapours.本發明關於一種適於將一組成物散佈至周圍空氣中的總成,該總成包含一中部,其用於容納一可燃液體及要被散佈之組成物的一混合物,一蒸發區,其用於藉由該中部被供應該混合物且包含一用於將組成物散佈至空氣中的區,及一催化燃燒之燃燒器區,其包括一加熱蒸發區之催化劑。此總成之特徵在於,其也包含一傳導熱量,不滲透任何液體,且在燃燒器與蒸發器之間形成一間隔的元件,蒸發區適於將可燃蒸汽釋放於空氣中,而燃燒器區適於燃燒此等蒸汽。1...總成2...中部3...蒸發區4...散佈區5...燃燒器區6...外壁7...內部分離元件8...第一工件9...腔室10...通道11...筒12...L型邊緣17...可燃蒸汽散發區
