| 摘要 |
PURPOSE:To enable cold air and hot air to effectively flow into a test room by a structure wherein partition plates, each of which can open and close a circulating passage under the condition linking to a change-over damper, are provided in the circulating passage parts near a cold air supplying port and a hot air supplying port respectively. CONSTITUTION:Because the movement of a cold air damper 6 to produce the open state of a cold air supplying port 4 results the closing of a cold air circulating passage 15 by a first partition plate 22, the cold air, which has been flowing through the cold air circulating passage 15 as indicated with the dashed line arrows, extensively flows into a test room 1 through the cold air supplying port 4 as indicated with the solid line arrows. In addition, because the movement of a hot air change-over damper 10 to produce the open state of a hot air supplying port 8 results the closing of a hot air circulating passage 20 by a second partition plate 23, the hot air extensively flows into the test room 1 through the hot air supplying port 4. Accordingly, even when a large amount of samples are housed in the test room 1, because no bypassing of the cold air or hot air to the cold air circulating passage 15 or hot air circulating passage 20 occurs, the air strikes uniformly against many samples, resulting in uniformizing the times, during which the temperature changes, of the respective samples.
|
