| 摘要 |
The present invention provides a gas burner ( 10 ) including: a distributor means ( 50 ) having at least one distribution chamber to distribute an air gas mixture around said distributor ( 50 ), said burner ( 10 ) including a plurality of flame ports ( 70 ) through which said gas mixture can pass and be ignited; at least one injector ( 39 ) associated with said distributor ( 50 ), said at least one injector ( 39 ) being positioned to inject gas into said at least distribution chamber via a venture formed of a vertically directed passage and transition port ( 64 ) and at least one venturi extension extending away from said transition port ( 64 ). The present invention also provides manifold for a gas burner ( 10 ), said manifold having an upper wall ( 12 ) and a lower wall ( 16 ) held in spaced apart relationship by a peripheral wall to define a cavity there between, said manifold including means ( 38 ) to mount at least one injector ( 39 ) so as to deliver an air gas supply to a distribution means ( 50 ) and an inlet port ( 18 ) to allow connection to a supply of gas, which can pressurise said cavity, said upper ( 12 ) and said lower ( 16 ) wall being formed from relatively thin sections.
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