EXHAUST COLLAR AND INTAKE AIR COLLAR

摘要

PURPOSE: An air supply and exhaust pipe for a combustion device is provided to reduce working time, and to save costs by applying without replacing the air supply and exhaust pipe when installing the air supply and exhaust pipe with a relatively long length. CONSTITUTION: An air supply and exhaust pipe for a combustion device comprises a first insertion unit(110), a second insertion unit(120), and an insertion restriction unit(130). A steel clamp is alternated to inner and outer circumferences in order to prevent a first pipe from separating in the first insertion unit. A plurality of coupling holes is formed on an upper end portion to be penetrated. The second insertion unit is installed to the outside of the first insertion unit. The insertion restriction unit is extruded to the outside in a predetermined length while comprising a boundary with an insertion unit(140) connected to a housing of the combustion device.