| 摘要 |
<p>PURPOSE:To enable to cool a premixing chamber off to the optimum temperature, by projecting a plurality of radiating fins to the outer side of a premixing chamber so that a part of each fin can contact to a liquid reservoir tank. CONSTITUTION:The raised temperature in a premixing chamber 6 during heating operation is cooled off by a coolong system 13. The premixing chamber 6 is cooled in such a manner that the heat in the chamber 6 is transmitted to the water in a hot-water tank 1 via radiating fins 14..., and the contacted parts of radiating fins 14..., with the left side wall 1a of a premixing chamber in order. With such an arrangement, the premixing chamber 6 can effectively be cooled. There is a possibility that the chamber 6 is excessively cooled, but the calorific value to be transferred to the hot-water tank 1 is limited by the width of heat transfer surface of radiating fins 14.... That means that the cooling ability can be controlled by increasing or decreasing the number of radiating fins 14.... Thereby, the premixing chamber 6 can be cooled, keeping the optimum temperature for the premixing chamber 4, by preventing excessive cooling of the premixing chamber by controlling the cooling ability of radiating fins 14... by increasing or decreasing the number of radiating fins.</p> |
