Combustion – Separately supplied or controlled – physically related flame... – By multiway valve
Patent
1975-08-20
1977-05-03
Croyle, Carlton R.
Combustion
Separately supplied or controlled, physically related flame...
By multiway valve
13762519, 13762547, F23Q 908
Patent
active
040211908
ABSTRACT:
A burner block valve assembly for supplying oil and steam selectively to a main burner or stand-by burner when the main burner is being repaired or replaced includes a valve plug rotatably disposed in the valve body and rotatable between a main burner ignition position, an intermediate joint burner ignition position and a stand-by burner ignition position wherein steam and oil are routed from supply lines to the burners through two levels of passages, the valve plug including a first chordal slot adapted to route oil to the first level from an oil supply line directly to the main burner in the main burner ignition position, jointly to the main burner and the stand-by burner in the joint burner ignition position, and directly to the stand-by burner in the stand-by burner ignition position, the valve plug further including a second chordal slot adapted to route steam to the second level from a steam supply line directly to the main burner in the main burner ignition position, jointly to steam supply to both burners in the joint burner ignition position and directly to the stand-by burner in the stand-by burner ignition position. The angular span of the second slot being greater than that of the first slot whereby steam is supplied to the respective burners in advance of the oil supply to assure proper atomization of the oil.
REFERENCES:
patent: 979335 (1910-12-01), Reid
patent: 2054588 (1936-09-01), Stephens
patent: 3098506 (1963-07-01), Spragens
patent: 3693347 (1972-09-01), Kydd et al.
Croyle Carlton R.
Rockwell International Corporation
Ross Thomas I.
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