| 摘要 |
<p>The present invention relates to a make-up water piping device of a boiler with an air gap forming means which connects a direct water pipe to a heating water pipe when supplying make-up water, while forming an air gap at a make-up water pipe, connecting the heating water pipe to the direct water pipe, when make-up water supply is completed so that the heating water pipe and the direct water pipe are completely separated. Even if the heating water is leaked from the heating water pipe and is introduced along the make-up water pipe, the leaked heating water is discharged outside by an air gap formed in the make-up water pipe, thereby the present invention completely blocks the heating water from flowing back to the direct water pipe.</p> |
