| 摘要 |
A suit for the protection of a wearer's body and head from heat and gas comprises an inner suit adapted to cover the wearer's body and head and having a tubular flow channel therethrough for the passage of a cooling liquid such as silicone. An outermost suit overlies the innermost suit and it has a body covering and a head covering portion. The head covering portion includes a face mask. A heat exchanger is mounted so as to connect into the outermost suit and includes a coolant chamber for containing a vaporizable coolant therein. The vaporizable coolant such as carbon dioxide is maintained under pressure and the cooling liquid is circulated into heat exchange relationship therewith so as to cool down the wearer's body. In addition the device includes a respirator for circulating respiratory air to the face of the wearer which advantageously includes a passage adjacent the heat exchanger so that the incoming air may also be cooled if desired. In one embodiment the device includes a protective filter for filtering out certain gases or contaminants of the air and in another embodiment the respirator includes a cartridge for adding oxygen to the air which is respirated. The device includes a hand pump for initial circulation of the cooling liquid and also preferably includes a pump which is driven by the vapor generated by the coolant. |
