| 摘要 |
In the apparatus, a low-pressure high-current mercury-vapor lamp (4) equipped with a tubular extension (6) arranged on the discharge tube is used as a radiation source. So that the temperatures of the tubular extension (6) can be regulated specifically even during the operation of the ultraviolet lamp (4), and to achieve a longer service life of the ultraviolet lamps, and airstream circulating through the apparatus and serving at the same time for heating the tubular extension (6) is used to cool the ultraviolet lamp (4). A metal heat-conducting body (25) surrounding the tubular extension (6) and having a temperature sensor (28) regulates the temperature of the tubular extension (6) to a predetermined value in conjunction with a cooling device (18) and a guide device (22). There is therefore no need for separate heating of the extension. Furthermore, the heat-conducting body (25) acts as a thermal and electrical shield for the temperature-measuring circuit. |
