| 摘要 |
FIELD: ventilation. ^ SUBSTANCE: device has an air duct built in the wall. The air duct is provided with a unit for protecting against wind from outside. The free end of the air duct is mounted in the room and has an additional branch pipe inclined at an angle of 90o for connecting the devices and apparatus for air treatment. The air duct receives detachable member provided with slots and air filters. The member is controlled by a handle provided with a locator-pointer. The local inflowing device provides the continuous control of the air inflow and admixing the internal recirculating air. ^ EFFECT: improved design. ^ 5 dwg |
