| 摘要 |
<p>Disclosed is a pressure responsive valve (56) which is opened upon a change in pressure so that there is fluid communicating between a first (12) and second (20) chamber. The valve, though useful in connection with any pressurized container or environment, is shown in conjunction with a self-contained, rapid looling device (10) that retains heat produced from the cooling process and be stored for indefinite periods without losing its cooling potential. A liquid in a first chamber (12) undergoes a change of phase into vapor, which cools the first chamber. A sorbent (24) in a second chamber is in fluid communication with the vapor and removes the vapor from the first chamber. The cooling process is facilitated by lining the interior surface of the first chamber with a wicking material (16) to retain the largest possible contact between the liquid and the first chamber as the level of the liquid lowers during the vaporization process.</p> |
