| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent a gas leakage by improving sealing property in the closed state of a solenoid valve in a gas manifold of a burner unit with a plurality of rich-lean burners arranged in a lateral direction. Ž<P>SOLUTION: The gas manifold is constituted by fastening a nozzle block 6 in which multiple vertical pairs of nozzles 63, 64 facing a vertical pair of gas inflow ports 21, 22 of the rich-leans burner 2 are laterally arranged on the outer surface of a rear wall part of a nozzle chamber 62 opened forward; a partition plate 7 with a valve hole 71 opened: and a valve block 8 in which the solenoid valve 83 for opening/closing the valve hole 71 is mounted to a front wall part of a gas inflow chamber. The inner surface of the rear wall part of the nozzle chamber 62 is protrusively provided with a rib 65 located between the upper and lower nozzles 63, 64 and extended over the whole lateral length of the nozzle chamber 62. The flexural rigidity of the nozzle block 6 is enhanced, and a warp of the partition plate 7 is straightened following the nozzle block 6. Consequently, even if the partition plate is warped, the warp is straightened to prevent a gas leakage in the closed state of the solenoid valve. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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