| 摘要 |
<p>A temperature-sensitive rod (52b) communicates with a diaphragm (53b), and displacement of the diaphragm (53b) depends on the pressure difference between the pressure of a low-pressure coolant drained from an evaporator (6) and the internal pressure of a sealed space (20) in which a temperature-sensitive medium is sealed, the pressure of which changes with the temperature. A blind hole (10) opening into the sealed space (20) is formed inside of the temperature-sensitive rod (52b). Further, when the temperature-sensitive medium is a gas mixture of a coolant and an inert gas, in order for the time constant of heat transfer from the temperature-sensitive rod (52b) to the temperature-sensitive medium to be within a prescribed time constant range, the proportion of the inert gas in the temperature-sensitive medium depends on the ratio (alpha) of the equivalent diameter (D) to the depth (L) of the blind hole (10).</p> |
