| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent a water cooler from being damaged due to freezing of water in the water cooler when a water jetting screw compressor is stopped at a low temperature in a cold region. <P>SOLUTION: The water jetting screw compressor includes a refrigerant compressor 14 which is arranged adjacent to the water cooler 20 and which removes moisture in a compressed air discharged from a water jetting air compressor 1, a first heat exchanger 17 which performs heat release operation, and a second heat exchanger 22 which is arranged at a side of the water cooler 20 and which performs heat adsorption operation, and further includes a refrigeration cycle 10 to which the refrigerant compressor 14, the first heat exchanger 17 and the second heat exchanger 22 are connected through a refrigerant gas piping, and by providing a four-way valve inside the refrigerant gas piping to switch a flow of a refrigerant gas inside the refrigeration cycle 10, the second heat exchanger 22 is made to perform heat release operation to heat the water cooler 20, so that freezing of the water cooler 20 is prevented. <P>COPYRIGHT: (C)2012,JPO&INPIT |
