| 摘要 |
PROBLEM TO BE SOLVED: To provide equipment for cooling a material web by a simple structure and with high reliability, while lowering the cost by this structure. SOLUTION: The equipment for cooling a paper web 14 printed and heated by a hot-air dryer 2 utilizes waste heat of a combustion chamber 10 for evaporative cooling of a refrigerant 52 passed through a cooling device 12 to cool the material web 14. A first rate of the refrigerant 52 is evaporated and a second rate thereof is cooled by taking the heat of evaporation therefrom. This equipment is provided with a steam generator 26 wherein steam is generated by the waste heat of the combustion chamber 10, in part at least, steam-jet vacuum nozzles 34 and 36 which are operated by the steam and whereon a negative pressure acts, and a negative pressure chamber 50 wherein the negative pressure acts on the refrigerant 52 to vaporize it partially at least for cooling.
|
