Scroll-type compressor
AssigneeKabushiki Kaisha Toshiba
InventorsToshinobu Inoue, Satoru Oikawa, Katutoshi Kumashiro, Hirotsugu Sakata
Life of this patent
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Abstract
A scroll-type compressor includes a hermetic case in which a compression section having a pair of spiral scrolls and a motor section for driving the compression section are arranged. The motor section has a rotating shaft coupled to the compression section. A flow passage is formed in the shaft and communicates at its one end with the compression chamber of the compression section and at its other end with a muffler chamber defined above the motor section. An operating fluid compressed in the compression chamber is guided into the muffler chamber through the flow passage, flows around the motor section, and then is discharged from the case.
Claims14
A scroll-type compressor, comprising:
- a hermetic case having a first pressure chamber, and an oil storing portion for storing a lubricating oil;
- a compression section located in the case and including first and second scrolls which have first and second spiral wraps, respectively, said first and second scrolls engaging to define a compression chamber between the first and second wraps;
- means for supplying an operating fluid to the compression chamber;
- drive means arranged in the case and located above the compression section, for driving at least one of the scrolls in orbiting movement relative to the other scroll, said drive means including a rotating shaft connected to the compression section, said rotating shaft having a flow passage which communicates with the compression chamber and introduces the operating fluid from the compression chamber to a region above the drive means;
- communication means for guiding the operating fluid, passes through the flow passage, into the first pressure chamber by way of the drive means, thereby cooling the drive means with the operating fluid and reducing noise of the operating fluid;
- and
- discharge means for discharging the operating fluid from the first pressure chamber to the outside of the case.
Dependencies are inferred from the claim text.