Rotary compressor having blade integrated in roller

A rotary compressor comprising:

• a cylinder having a cylinder chamber;
• a rotatable roller positioned in the cylinder chamber, the roller being rotatable in the cylinder chamber;
• a blade partitioning the cylinder chamber into a compression chamber and a suction chamber, the suction chamber having a suction port and the compression chamber having a discharge port, gas being sucked through the suction port, compressed and discharged through the discharge port when the roller is rotated, the blade being integrated with the roller so that the blade protrudes radially outwardly from the roller;
• an eccentric shaft portion of a driving shaft, the roller being mounted on the shaft and being eccentrically rotated therewith;
• a support member being provided on the cylinder, the support member having a generally circular shape, the support member being rotatable and having a receiving portion for receiving a tip portion of the blade in such a manner that the tip portion of the blade is advanced and retreated from the support member;
• a stepped recess provided on outer circumferential surface of the roller, the stepped recess having an axial center and axial ends, a deep recess portion being provided at the axial center and shallow recess portions being provided at both of the axial ends;
• a fitting hole penetrating axially outwardly from both ends of the deep recess portion of the stepped recess;
• a fitting portion having a fitting protrusion on the blade, the fitting protrusion being fitted into the deep recess portion of the stepped recess and a fitting hole being provided in the fitting protrusion, the fitting portion of the blade being fitted into the stepped recess;
• and
• a pin being insertable into the fitting holes in the stepped recess and the fitting protrusion to integrally couple the blade with the roller.

A rotary compressor comprising:

• a cylinder having a cylinder chamber;
• a rotatable roller positioned in the cylinder chamber, the roller being rotatable in the cylinder chamber, a convex portion provided on the periphery of the roller;
• a blade partitioning the cylinder chamber into a compression chamber and a suction chamber, the suction chamber having a suction port and the compression chamber having a discharge port, gas being sucked through the suction port, compressed and discharged through the discharge port when the roller is rotated, the blade having a recess portion into with the convex portion of the roller is insertable;
• a pin being insertable through the convex portion and the blade to integrally couple the blade to the roller, the blade protruding radially outwardly from the roller;
• an eccentric shaft portion of a driving shaft, the roller being mounted on the shaft and being eccentrically rotated therewith;
• and
• a support member being provided on the cylinder, the support member having a generally circular shape, the support member being rotatable and having a receiving portion for receiving a tip portion of the blade in such a manner that the tip portion of the blade is advanced and retreated from the support member.

A rotary compressor comprising:

• a cylinder having a cylinder chamber;
• a rotatable roller positioned in the cylinder chamber, the roller being rotatable in the cylinder chamber;
• a blade partitioning the cylinder chamber into a compression chamber and a suction chamber, the suction chamber having a suction port and the compression chamber having a discharge port, gas being sucked through the suction port, compressed and discharged through the discharge port when the roller is rotated, the blade being integrated with the roller so that the blade protrudes radially outwardly from the roller and the blade having a predetermined length;
• an eccentric shaft portion of a driving shaft, the roller being mounted on the shaft and being eccentrically rotated therewith;
• and
• a support member being provided on the cylinder, the support member having a generally circular shape and a radius, the support member being rotatable about a rotation center and having a receiving portion for receiving a tip portion of the blade in such a manner that the tip portion of the blade is advanced and retreated from the support member,
• wherein the predetermined length of the blade and the radius of the support member are set so that when the tip portion of the blade is most deeply fitted into the receiving portion, the tip portion of the blade fails to extend beyond the rotation center of the support member.

A rotary compressor comprising:

• a cylinder having a cylinder chamber;
• a rotatable roller positioned in the cylinder chamber, the roller being rotatable in the cylinder chamber;
• a blade partitioning the cylinder chamber into a compression chamber and a suction chamber, the suction chamber having a suction port and the compression chamber having a discharge port, gas being sucked through the suction port, compressed and discharged through the discharge port when the roller is rotated, the blade being integrated with the roller so that the blade protrudes radially outwardly from the roller;
• an eccentric shaft portion of a driving shaft, the roller being mounted on the shaft and being eccentrically rotated therewith;
• and
• a support member being provided on the cylinder, the support member having a generally circular shape, the support member being rotatable about a rotation center and having a receiving portion for receiving a tip portion of the blade in such a manner that the tip portion of the blade is advanced and retreated from the support member, a hole being provided at a center of the support member, the hole being in communication with the receiving portion and being sized so that when the tip portion of the blade is deepest into the receiving portion, a contact end portion of the tip portion of the blade will contact the receiving portion and fail to extend beyond the rotation center of the support member.