| 摘要 |
A fireplace heat exchanger assembly having a conduit that includes a first passage communicating with an air inlet located outwardly of a fireplace and extending rearwardly across the top of the fireplace, and a second passage communicating with the first passage at the rear of the fireplace and extending forwardly across the top of the fireplace for communication with an air outlet located outwardly of the fireplace. A blower introduces air into the air inlet, passes the air through the first and second passages, and discharges the air through the air outlet. More particularly, the conduit includes a heat exchanger box of relatively smaller height than width and length, the box being provided with laterally spaced and enclosed slots therethrough to provide the first passage between the slots, and to provide a pair of second passages laterally outward of the slots, the slots terminating in spaced relation to the rear of the box to place the first and second passages in communication. In one embodiment, the heat exchanger box has angularly related box portions through which the enclosed slots extend, so that the first and second passages are disposed at an angle to the vertical at the rear of the fireplace, and the transverse passage interconnects the first and second passages at the bottom, rear of the fireplace. Further, the conduit includes a duct frame disposed externally at the top and sides of the fireplace through which the first and second passages communicate respectively with the air inlet and air outlet.
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