| 摘要 |
417,456. Ventilating rooms. HALL & KAY, Ltd., HALL, S., and KAY, P., Stockport Road, Ashton-under-Lyne. March 29, 1933, No. 9402. [Class 137.] Apparatus for circulating, and heating or cooling air in rooms comprises one fan 13 which draws air from the room through a conduit 4 and discharges it through healing or cooling gilled pipes 8 into the room, and a second fan 20 which draws fresh air from the outside through a conduit 10 and discharges it into the room. Some of the air from the duct 10 passes around the fan motor 12 which is thereby cooled, and mixes with the air from the fan 13. Air deflectors 16, 17 are provided, which may be adjustable as described in Specification 417,455. A valve 11 controls the air flow in conduit 10 which may communicate with a chamber 18 surrounding the motor casing, so that the air from the fan 20 is mixed with that drawn in by the fan 13. Water or steam sprays may be directed into the air discharged into the room for moistening, heating, or cooling purposes.
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