| 摘要 |
<p>PURPOSE:To improve the air-conditioning efficiency and simplify an air condi tioner by providing opening/closing means to be opened/closed due to the pres sure of cooling air flowing through underfloor into a first flow passage and providing a fan as well to suck the cooling air into the second flow passage. CONSTITUTION:A partition plate 12 between a first flow passage 10 and a second flow passage 11 is provided with opening/closing means 13 thereon which are opened/closed corresponded to the degree of pressure of cooling air flowed from underfloor, and a fan to suck the cooling air is provided in the passage 11. Furthermore, the means 13 is provided with a detection switch 15 to detect the degree of opening and closing. When the switch 15 detects that the means 13 has been opened wider than a specified value, it stops the operation of the fan 14 because the flow rate of the cooling air is appropriate, whereas, when it detects that the means 13 have been opened still narrower than the specified value, it decides that the flow rate is not sufficient yet and activates the fan 14.</p> |
