Pre-mixing gas burner - has bimetal strips hinging half-way along distribution chamber and guided in end slots

摘要

The pre-mixing, and pref. atmospheric, gas burner has a nozzle with mixing passage delivering into a mixture-distribution chamber. A flow-restrictor formed by two bimetal strips is mounted at the mouth of the passage into the chamber. The rectangular strips (3) hinge half-way along on opposite sides of the corresp. rectangular distribution chamber (1). Their opposite ends (9) are guided in vertical slots (8) in the chamber. ADVANTAGE - Max. alteration in cross-section under small temp. variations.