| 摘要 |
<p>A condensed efficient gas water heater comprises a water tank, a combustor arranged below the water tank, a smoke exhaust cover arranged on the outside of the water tank, a heat exchange smoke tube arranged in the water tank, and an insulating layer and a shell which are covered on the outside of the smoke exhaust cover, wherein a smoke exhaust clearance is reserved between the water tank and the smoke exhaust cover; and the smoke exhaust cover is provided with an air exhaust communicated with the atmosphere, the heat exchange smoke tube is at least provided with an uplink heat exchange smoke tube and a downlink heat exchange smoke tube, the uplink heat exchange smoke tube vertically penetrates through the water tank, the downlink heat exchange smoke tube and the uplink heat exchange smoke tube are communicated through a communicating tube, and the lower end of the downlink heat exchange smoke tube is communicated with the air exhaust. The invention can avoid the disadvantage of smoke congestion in a diversion cavity, thus smooth smoke circulation can be ensured and the heat transfer efficiency can be improved.</p> |
