PROBLEM TO BE SOLVED: To inhibit rust from being caused on a surface of a combustion burner by condensation of water during combustion of hydrogen.SOLUTION: A hydrogen/oxygen supply device includes: a main member having a first circular column part 10, a second circular column part 11 which is provided extending from a part of an upper surface of the first circular column part to the upper side in a vertical direction, and a support part 12 and incorporating a first pipeline 13 communicating with an opening of an upper surface of the second circular column part and a second pipeline 14 communicating with an opening of the upper surface of the first circular column part； and a cover member having a cylindrical part 20 having a cylindrical part opening and a circular disk part 21 having a circular disk part opening 22. The circular disk part 21 is disposed so as not to contact with the second circular column part 11 and the first circular column part 10. The hydrogen/oxygen supply device supplies an oxygen containing gas through the first pipeline and supplies a hydrogen containing gas through the second pipeline. The main member and the cover member are formed by a material having rust prevention capability higher than brass.SELECTED DRAWING: Figure 1【課題】水素の燃焼時において、燃焼バーナの表面への水の凝集による錆の発生を抑制する。【解決手段】第１円柱部１０と、第１円柱部の上面の一部から鉛直上方に伸びるように設けられた第２円柱部１１と、支持部１２とを有し、第２円柱部の上面の開口に連通する第１配管１３と、第１円柱部の上面の開口に連通する第２配管１４を内蔵する主部材と、円筒部開口を有する円筒部２０と、円板部開口２２を有する円板部２１とを有するカバー部材を有し、円板部２１が第２円柱部１１と第１円柱部１０と非接触となるように配置され、第１配管を通じて酸素含有ガスを供給し、第２配管を通じて水素含有ガスを供給し、主部材とカバー部材が、真鍮より防錆性が高い材料から形成されている構成とする。【選択図】図１
