| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent a lubricating oil from lowering in its viscosity by enhancing the cooling effect of constituent apparatus such as a motor installed in a sealed vessel. <P>SOLUTION: From a suction pipe 29 a refrigerant gas r with low pressure and low temperature is sucked into a lower sealed space s2 where the apparatus such as motor 32 is accommodated. After cooling the apparatus such as motor 32 with the refrigerant gas r, the gas r is introduced into the upper sealed space s1 from a gas passage 72, and sucked into a compression space from a suction port 26. The refrigerant gas r is compressed in the compression space c, and the gas r pressurized is discharged from a discharge pipe 28 into a refrigerant circulating passage 82. The back face 24c of a revolving scroll 24 is hermetically supported by a flat surface of a main frame 18. An oil hole 68 is bored in an end plate of the revolving scroll 24 to supply the lubricating oil to between the back face 24c and the flat surface. <P>COPYRIGHT: (C)2012,JPO&INPIT |
