DIFFUSION BURNER WITH NEGATIVE PRESSURE COMBUSTION CHAMBER

摘要

There is disclosed a burner (2) for use in domestic appliances requiring a hot gaseous stream during operation. The burner consists of a pair of concentric cylindrical tubes one substantially inside the other. The inner tube (4) is provided with a series of perforations (10) in rows around its surface and aligned axially (50) with the tube. An annular passage is defined between the inner and outer tube through which air is drawn by a fan downstream of the tubes and a gas injector (6) is disposed at an inlet end of the burner which delivers a combustible gas into the inner tube.