Alex English, August, 1997
This page has a drawing and some pictures of the latest version of my
The addition of a bullet shaped bluff body in the upper mixing portion
of the tangentially swirled venturi has resulted in a more evenly distributed
and shorter flame with consistently lower CO emissions.
( lost images: Iddv.jpg and Qvless.jpg" )
This shows the bottom of the old milking machine pail with the primary air holes.
The insulation acts as a seal between the pail and the bottom cone of
the venturi burner .Shown below.
This shows a fairly well mixed and evenly distributed flame filling the lower portion of the combustion chamber during the latter half of a 1.5 hour batch burn.
There is about 90cm of chimney above the bluff body. With the flame extending into the bottom 10 to 20cm. The flame extends further and is a more yellow/orange colour during the early portion of the burn.