Burner and ignition system |
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| 申请号 | US38919573 | 申请日 | 1973-08-17 | 公开(公告)号 | US3844704A | 公开(公告)日 | 1974-10-29 |
| 申请人 | MERE IND INC; | 发明人 | HELKE R; | ||||
| 摘要 | A burner assembly including a burner tube having a flamesupporting end and an upstream ignition port which has a scoopshaped baffle associated therewith for emitting a turbulent slip stream of fuel from the burner tube. A pilot is maintained in ignition proximity to the tube ignition port for igniting the slip stream. Upon ignition, the slip stream flame is sucked into the burner tube and delivered to the flame supporting end by the stream of fuel and air flowing through the burner tube. A spark ignitor is mounted near the pilot to light the pilot. A capillary bulb is mounted in heat receiving proximity to the pilot to detect heat of the pilot and control the burner fuel valve so that fuel is not delivered through the burner tube unless the pilot is on. | ||||||
| 权利要求 | 1. A burner assembly comprisng a burner tube having a flamesupporting outlet, an ignition port in said tube upstream from said flame-supporting outlet, baffle means associated with said ignition port and extending into the burner tube at said ignition port for emitting a small turbulent portion of the fluid fuel passing through said burner tube from said ignition port, said baffle means being a scoop-shaped indentation in the burner tube wall with the open end of the scoop defining a portion of the periphery of the ignition port and defining the downstream edge of the baffle in the form of a reverse rounded edge, and ignition means for igniting the emitted turbulent portion whereby said fuel within the burner tube is also ignited and the flame travels from said ignition port through the burner tube to said flamesupporting outlet. 2. A burner assembly comprising a burner tube having a flame-supporting outlet, an ignition port in said tube upstream from said flame-supporting outlet, means associated with said ignition port for emitting a small turbulent portion of the fluid fuel passing through said burner tube from said ignition port to the exterior of said burner tube, and ignition means for igniting the emitted turbulent portion whereby the ignited turbulent portion is drawn into the burner tube to ignite fluid fuel within the burner tube and the resulting flame within the burner tube travels from said ignition port through the burner tube to said flame-supporting outlet. 3. The assembly of claim 2 wherein said emitting means comprises baffle means extending into the burner tube at said ignition port. 4. The assembly of claim 3 wherein the baffle means is a scoop shaped indentation in the burner tube wall with the open end of the scoop defining a portion of the periphery of the ignition port and defining the downstream edge of the baffle. 5. The assembly of claim 2 wherein said emitting means is an indentation in the burner tube wall having upstream and downstream wall portions and said ignition port is located in the downstream wall. 6. The assembly of claim 2 wherein said ignition means comprises a pilot having a flame-supporting port adjacent said ignition port. 7. The assembly of claim 6 including a capillary bulb in heat receiving proximity to said pilot flame-supporting port for detecting flame at said port. 8. The assembly of claim 7 including a pressure responsive fuel valve control for controlling flow of fuel to said burner tube and conduit means communicating said capillary bulb with said fuel valve control for blocking opening of said fuel valve responsive to a decrease in pressure within said bulb determinitive of a no-flame condition at said pilot port. 9. The assembly of claim 6 including manually operable ignition means adjacent said pilot port for igniting the pilot. 10. The assembly of claim 9 wherein said ignition means is a discharge plug having a pressure responsive piezoelectric element for generating an electric spark. 11. The assembly of claim 2 including a capillary bulb means adjacent said ignition means for detecting heat from said ignition means and valve means responsive to detection of heat by said bulb means for admitting fuel to said burner tube. 12. The assembly of claim 11 including shield means for shielding said capillary bulb from the burner tube flame. |
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