| 摘要 |
PROBLEM TO BE SOLVED: To provide an environmental testing device in which accuracy of an environmental test can be improved by suppressing distribution nonuniformity of a temperature or humidity of discharged air from an air blower, in particular, distribution nonuniformity in a rotating direction of rotary fins of the air blower.SOLUTION: In an environmental testing device 1, a thermohygrostat is divided into a test chamber 6 and an air conditioning passage 7 by a partition wall 4 and air is circulated between the test chamber 6 and the air conditioning passage 7 via upper and lower openings 9 and 19, so that the inside of the test chamber 6 can be controlled into desired environment. In the air conditioning passage 7, a humidifier 14, an evaporator 15, a heating heater 26 and an air blower 27 are disposed in series in this order from an upstream side, an air introduction guide 8 is provided between the heating heater 26 and the air blower 27 and further, a resistance plate 11 is provided at a downstream side of the air blower 27. The air introduction guide 8 guides air in the vicinity of the downstream of the heating heater 26 to the air blower 27, and the resistance plate 11 is capable of making approximately equal nonuniformity in a discharge flow rate of the air blower 27. |
