| 摘要 |
The present invention relates to a dust collecting device for recovering waste heat of a pellet boiler, having a water chamber formed between an inner tank and an outer tank to allow low temperature water supplied to the water chamber to undergo heat exchange with combustion gas, thereby recovering waste heat of the combustion gas. According to the present invention, the dust collecting device for recovering waste heat of a pellet boiler has the water chamber (30) formed between the outer tank (20) and the inner tank (30), the inner tank (10) arranged inside the outer tank (20). Each of a combustion gas introduction pipe (GP1) and a combustion gas discharge pipe (GP2) is connected to the inner tank through the outer tank (20). The combustion gas discharge pipe (GP2) is arranged to be opposite to the combustion gas introduction pipe (GP1). Each of a water supply pipe (WP1) and a drain pipe (WP2) is connected to the outer tank (20). The water supply pipe (WP1) is arranged on a lower end of the outer tank (20). The drain pipe (WP2) is arranged on an upper end of the outer tank (20). Heat of the combustion gas is recovered through heat exchange with combustion gas supplied to the inner tank (10) in a process where water passes through the water chamber (20). A filter screen (40) is erected on the center of the inner tank (10), and cleaning water is filled in the inner tank (10) up to a lower end of the filter screen (40). An upper end of a slanted guide plate (50) is welded to the inner tank (10) to be arranged on the upper part of the combustion gas introduction pipe (GP1), and a lower end of the guide plate (50) is arranged in the upper part of the cleaning water such that combustion gas supplied to the inner tank (10) through the combustion gas introduction pipe (GP1) is guided to the cleaning water by the guide plate (50). |
