| 摘要 |
The burner construction having a bottom pan and a cover is divided into two sections which are independently active when a gas fuel is supplied by independent venturi tubes. The tubes and bottom pans are formed with cam-locking elements which require a twisting motion in the receiving apertures in which the twisting of the tubes engages the cam-locking elements which pulls a shoulder on the tubes into a tight sealing contact against the pan thereby avoiding the need for tools or the use of gasket materials to form the seal.
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