| 摘要 |
An improved adjustable primary air supply for wood burning device comprises a base plate having an opening from where primary air enters a firebox. A gate rotationally attached to the base plate by way of a mechanical fastener; a slider with guiding means sliding within an inclined slot; the slider comprised of a contact point which makes contact with the gate for adjustments. A first thermostatic bimetal blade reacting to heat by displacing the gate so that the gate closes the opening; and a means to move the slider and push the gate fully open. The improvement comprising a first stopper member located on the base plate adjacent the opening and adapted to stop the movement of the gate and thereby prevent the gate from completely covering the opening, and a second thermostatic bimetal blade attached to the gate and adapted to react to heat by displacing the gate from the base plate so that the gate can move over the first stopper member such that the gate can continue to cover the opening until the gate contacts the slider contact point.
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