| 摘要 |
<p>PURPOSE:To provide a vacuum drying device for use in drying raw garbages in which a drying device can be performed as a refrigerator by discharging heat through a radiator when a four-way valve is changed over and a direction of flow of refrigerant is made to be reverse and then raw garbages left in the drying device are prevented from being decayed. CONSTITUTION:When a compressor 5 is driven and a four-way valve 10 and a three-way valve 11 are operated to complete a heating circulation system, a drying device A is heated through the first heat exchanging pipe 6 and a heat recoverying device B is cooled through the second heat exchanging pipe 7. Accordingly, if driven item is fed into the drying device A, a vacuum pump C is driven and an inside part of the drying device A is reduced in advance, moisture in the dried item evaporates and water vapor is condensed by the heat recoverying device B. In turn, each of the valves 10 and 11 is operated to reverse a flowing direction of refrigerant in respect to a capillary tube 9, condensing of refrigerant in the pipe containing a radiator 8 is carried out to increase its temperature and evaporation of refrigerant is generated in a pipe containing the first heat exchanging pipe 6 to cause its temperature to be decreased and the inside part of the drying device A is cooled.</p> |
