| 摘要 |
Apparatus for regulating the supply of ambient air to enclosed heated spaces, such as boiler rooms, for the purpose of maintaining a high and more uniform temperature therein. The apparatus is intended to be mounted to the fresh-air intake of the boiler room. The apparatus comprises a housing having a bottom part and an upper part, and includes a vertical cold-air duct, the upper end of which communicates with the fresh-air intake and conducts ambient air to the bottom part of the housing, and preferably two substantially vertical warm-air ducts, the respective lower ends of which communicate with the lower end of the cold-air duct and the respective upper ends of which discharge at a location adjacent the ceiling of the boiler room. |
