| 摘要 |
PROBLEM TO BE SOLVED: To provide a ventilation equipment, having a good balance in air- volume, in which a ventilation duct can be laid simply and quickly, and equal volume of draft is let out from respective outlets. SOLUTION: In the ventilation equipment, pressurized air is press-fed to a plurality of ventilation-requiring living rooms via a ventilation duct from a ventilation unit installed in a building. The ventilation duct is composed of a duct pipe, having gradually diminishing inner-diameter, as going from the unit to the outlets, a plurality of joints provided midway in the pipe, and branch pipes extended to the living rooms from respective joints.
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