Swash-plate type compressor having oil separating function

A swash-plate type compressor which comprises:

• a cylinder block horizontally disposed and having a through hole extending along an axis thereof and an oil sump formed at a bottom thereof;
• a cylinder head mounted at one end of said cylinder block and having a fluid suction port and a fluid discharge port located on top thereof;
• a valve plate interposed between said cylinder block and said cylinder head;
• a drive shaft rotatably fitted in said through hole of said cylinder block;
• a partition member arranged within said cylinder head and axially dividing the interior thereof, said partition member defining a first chamber and a second chamber concentrically arranged on one side thereof facing said valve plate, said first chamber being located radially outwardly for temporarily storing high pressure fluid being discharged from said compressor, said second chamber being located radially inwardly for temporarily storing low pressure fluid being sucked into said compressor, said partition member further defining a third chamber on an opposite side thereof remote from said valve plate, said fluid suction port opening in said third chamber, said third chamber communicating with said second chamber through a hole formed substantially centrally through said partition member for allowing suction fluid to pass therethrough before being fed to said second chamber;
• a pair of guide members circumferentially extending and arranged within said first chamber, said guide members defining, respectively, a first oil collecting chamber and a second oil collecting chamber located at peripheral portions of said first chamber and opening toward said fluid discharge port;
• first passage means communicating said first and second oil collecting chambers with said through hole of said cylinder block for guiding oil to said through hole;
• a guide wall arranged within said third chamber and defining a suction fluid passage spirally extending from said fluid suction port to said central hole of said partition member, said guide wall further defining a third oil collecting chamber at a peripheral portion of said third chamber, said guide wall having a hole formed therein through which oil is introduced into said third oil collecting chamber from said suction fluid passage;
• and second passage means communicating said third oil collecting chamber with said oil sump for guiding oil to said oil sump.