| 摘要 |
The present invention relates to an experiment device having an elliptical internal structure, the container capacity of 2.24L, Dunlop air injection, and digitalization of an instrument panel while enabling the experiment regarding the thermal insulation inflation and compression easily and safely, thereby teaching students the scientific knowledge regarding the thermal insulation change. The device includes: an experiment container unit (10) which has a curved internal space having the volume of 2.24L formed by the body unit (11) and the cover unit (12); a temperature measuring means which is formed on the upper and outer side of the cover unit and measures and displays the internal temperature of the experiment container; a pressure measuring means which is formed on the upper and outer side of the cover unit and measures and displays the internal pressure of the experiment container; an air injection means (40) formed on the upper and outer side of the cover unit and injects air therein; a pressure adjusting means (50) which automatically discharges the injected air to maintain certain pressure when the internal pressure of the experiment container rises above a reference value by the injected air; an air discharging means which sequentially discharges the injected air to reduce the internal pressure momentarily as in cloud formation experiments; and an on/off switch (70) controlling the on and off of the temperature measuring means and pressure measuring means. |
