| 摘要 |
PURPOSE:To enable a temperature regulation of high accuracy by a method wherein air supplied after the temperature adjustment by a heat exchanger is recirculated to an air supply fan, and the recirculated air and return air from an air return duct are stirred and mixed to be supplied to a room to be air- conditioned. CONSTITUTION:In an air conditioning circuit constituted by the air supply fan 11, air supply duct 12, room 13 to be air-conditioned and air return duct 14, the air supply duct 12 is branched on the discharge side of the air supply fan 11 into branch ducts 15 and 16. A part of supply air is recirculated into the air supply fan 11 through the branch duct 15, which includes a heat exchanger 17 having a cooler 21 and a heater 22. The heater 22 controls the temperature of the room 13 to be air-conditioned through a temperature controller 20 based on the output from a temperature sensor 19. By this, the temperature of the supply air to be recirculated is adjusted, and then mixed with the return air. The resultant mixed air is supplied to the room 13. |
