Arrangement and mounting of the enclosure and combustion chamber of a forced-draft boiler |
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| 申请号 | US53188874 | 申请日 | 1974-12-12 | 公开(公告)号 | US3921592A | 公开(公告)日 | 1975-11-25 |
| 申请人 | SAUNIER DUVAL; | 发明人 | CALVIN GUY EDMOND; COSTECALDE ANDRE MARCEL; | ||||
| 摘要 | In the forced-draft boiler construction disclosed herein, a Ushaped partition, together with the upper portion of an overall enclosure, forms an air-tight compartment. A burner rests in the lower portion of the U-shaped partition while a heat-exchanger bridges the upper portion of the U-shaped partition. The heat exchanger includes a skirt which extends down into the lower portion of the partition, the forced-draft air flow causing inlet air to pass between the partition and the skirt. | ||||||
| 权利要求 | 1. A forced-draft furnace comprising: a rectangular enclosure, thhe top portion of which is substantially imperforate except for a combustion air inlet and a combustion products outlet in the back panel of said enclosure; a U-shaped partition separating top and bottom portions of said enclosure; resting in the lower portion of said partition, a burner; a heat exchanger bridging said U-shaped partition, said heat exchanger being provided with a shroud including a skirt portion which extends down into the depending portion of said partition with a predetermined gap therebetween; and means for exhausting combustion products from said shroud through said outlet, whereby air entering said inlet passes around said shroud and through said gap between said skirt and the depending portion of said partition to said burner. 2. A furnace as set forth in claim 1 wherein the top part of said enclosure and the lower portion of said partition form an air-tight compartment in the shape of superimposed rectangles, there being a front cover matching the contour of the compartment. 3. A furnace as set forth in claim 1 wherein said heat exchanger is of the water tube type. 4. A furnace as set forth in claim 1 wherein said outlet is concentric within said inlet. 5. A forced-draft boiler comprising: a rectangular enclosure, the top portion of which is substantially imperforate except for a combustion air inlet and a concentric combustion products outlet in the back panel of said enclosure; bridging said enclosure, a U-shaped partition having laterally-extending horizontal shoulders, said partition separating top and bottom portions of said enclosure; mounted in the lower portion of said partition, a burner; a water-tube heat exchanger bridging said U-shaped partition, said heat exchanger having inlet and outlet tubes which turn downwardly from the sides of said exchanger and extend through said shoulders, said heat exchanger being provided with a shroud including a skirt portion which extends down into the depending portion of said partition with a predetermined gap therebetwen; and means including a blower for exhausting combustion products from said shroud through said outlet, whereby air entering said inlet passes around said shroud and through said gap between said skirt and the depending portion of said partition to said burner. 6. A boiler as set forth in claim 5 wherein said partition and said enclosure walls have bosses for maintaining the spacing of said skirt therefrom. |
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