Rotary compressor having strengthened partition and shaped recesses for receiving the strengthened partition
AssigneeDaikin Industries, Ltd.
InventorsYasushi Yamamoto, Masanori Masuda, Takahiro Uematsu
Life of this patent
Estimating the term…
Abstract
A swinging type blade which allows compressor reliability to be improved by preventing a blade from being fracture-damaged at its joint portion while reducing the compressors ineffective volume. A rotary compressor that adopts a swinging type blade including a swelling portion formed at the joint portion of the blade with a roller. Further, a recessed portion for receiving the swelling portion is provided in a swing bushing. Further, the swelling portion may be symmetrical relative to the blade or asymmetrical with an associated notch provided on the opposite side of the blade with respect to the asymmetrical swelling portion.
Claims27
A rotary compressor comprising a cylinder having a cylinder chamber;
- a roller fitted to an eccentric shaft of a drive shaft and internally provided in the cylinder chamber;
- a blade protrusively coupled with an outer peripheral portion of the roller and which partitions an interior of the cylinder chamber into a low-pressure chamber communicating with a suction port and a high-pressure chamber communicating with a discharge port;
- and a swinging bushing having a receptive groove receiving a protruding tip of the blade such that the tip of the blade is free to advance and retreat in the receptive groove, and which is swingably supported in a retainer hole provided in the cylinder, characterized in that the rotary compressor further comprises:
- a swelling portion formed at a joint portion of the blade to the roller;
- and
- a recessed portion formed in the swinging bushing and receiving the swelling portion, the swelling portion substantially filling the recessed portion when the roller is at a top dead center position.
In a rotary compressor having a cylinder with a cylinder chamber;
- a roller fitted to an eccentric shaft of a drive shaft and internally provided in the cylinder chamber;
- a blade protrusively coupled with an outer peripheral portion of the roller and which partitions an interior of the cylinder chamber into a low-pressure chamber communicating with a suction port and a high-pressure chamber communicating with a discharge port;
- and a swinging bushing having a receptive groove receiving a protruding tip of the blade such that the tip of the blade is free to advance and retreat in the receptive groove, and which is swingably supported in a retainer hole provided in the cylinder, a method for improving the durability of the blade and increasing compressor efficiency comprising the steps of:
- providing a swelling portion on a joint portion of the blade to the roller;
- and
- providing a recessed portion formed in the swinging bushing for receiving the swelling portion, the swelling portion substantially filling the recessed portion when the roller is at a top dead center position.
Dependencies are inferred from the claim text.