Combustion equipment

A combustion apparatus for burning a vaporizable fuel by mixing said fuel with air, which comprises:

• a vertically oriented outer flame cylinder having a lower vaporizing portion, which lower vaporizing portion has a first plurality of through holes therein and an upper red heat portion above said vaporizing portion, said upper red heat portion having a second plurality of through holes therein;
• a vertically oriented inner flame cyliner within and spaced inwardly of said outer flame cylinder, said inner flame cylinder having a plurality of holes therein, said inner flame cylinder defining with said outer flame cylinder a vertically extending annular combustion portion;
• an outer cylinder around and spaced outwards of said outer flame cylinder;
• a wick vertically movable mounted in a lower end of said combustion portion adjacent said first plurality of holes and arranged for movement between a minimum height position and a maximum height position for adjusting the amount of combustion in said apparatus in accordance with the height of said wick;
• an outer control cylinder positioned inward of said outer flame cylinder, said outer control cylinder extending from a position above the maximum height position of said wick and spaced radially inwardly from said outer flame cylinder for forming an outer control zone between said outer control cylinder, and said outer flame cylinder being directed upwardly along the inside of said outer flame cylinder, said outer control cylinder having a bottom closure member thereon by which said outer control cylinder is mounted on said flame cylinder and for defining a lower extent of the outer control zone;
• an air control cylinder positioned inward of said inner flame cylinder, said air control cylinder extending upwardly from a position above the maximum height position of said wick and terminating at a position adjacent to an upper portion of said inner flame cylinder, said air control cylinder spaced from said inner flame cylinder including means for closing the bottom of said control zone to define a vertically extending annular air control zone between said air control cylinder and said inner flame cylinder, said air control cylinder defining a vertically extending inner air path therewithin.