摘要:
There is provided a rotary compressor comprising an electric element, and first and second rotary compression elements driven by the electric element, these components being provided in a hermetically sealed container, gas compressed by the first rotary compression element being discharged into the hermetically sealed container, and the discharged gas of intermediate pressure being further compressed by the second rotary compression element, cylinders constituting the respective rotary compression elements, an intermediate diaphragm (36) provided between the cylinders to partition each rotary compression element, a support member adapted to seal an opening surface of each cylinder and provided with a bearing of a rotary shaft and an oil hole (82) formed in the rotary shaft wherein the intermediate diaphragm includes an oil supply path (191) for communicating the oil hole with a suction side of the second rotary compression element.
摘要:
There is provided a rotary compressor capable of preventing deterioration of performance following plug fixing carried out to prevent falling-off of a spring member. The rotary compressor comprises a cylinder constituting a rotary compression element, a roller engaged with an eccentric portion formed in a rotary shaft of an electric element, and eccentrically rotated in the cylinder, a vane abutted on the roller to divide an inside of the cylinder into a low pressure chamber side and a high pressure chamber side, a spring member for always pressing the vane to the roller side, a housing portion of the spring member, formed in the cylinder, and opened to the vane side and a hermetically sealed container side, a plug positioned in the hermetically sealed container side of the spring member, and inserted into the housing portion to fit into a gap, and an O ring attached around the plug to seal a part between the plug and the housing portion. In this case, a space between the cylinder and the hermetically sealed container is set smaller than a distance from the O ring to an end of the plug on the hermetically sealed container side.
摘要:
There is provided a rotary compressor capable of preventing deterioration of performance following plug (137) fixing carried out to prevent falling-off a spring member (76). The rotary compressor comprises a cylinder constituting a rotary compression element, a roller (46) engaged with an eccentric portion formed in a rotary shaft of an electric element, and eccentrically rotated in the cylinder, a vane abutted on the roller to divide an inside of the cylinder into a low pressure chamber side and a high pressure chamber side, a spring member for always pressing the vane (50) to the roller side, a housing portion of the spring member, formed in the cylinder, and opened to the vane side and a hermetically sealed container side, a plug (137) positioned in the hermetically sealed container (12) side of the spring member, and inserted into the housing portion to fit into a gap, and an O ring (138) attached around the plug to seal a part between the plug and the housing portion. In this case, a space between the cylinder and the hermetically sealed container is set smaller than a distance from the O ring to an end of the plug on the hermetically sealed container side.
摘要:
A two stage rotary compressor is disclosed and includes first and second cylinders (38,40) separated by an intermediate partition plate (36) and first and second compressing elements (42,44) disposed in the first and second cylinders (38,40) respectfully, the compressing elements (42,44) being formed on a rotary shaft (16) spaced from each other by a portion of the shaft (90) that extends through an aperture (36a) in the intermediate partition plate (36). The portion (90) of the shaft (16) between the compressing elements (42,44) has a larger cross-sectional area than the cross sectional area of the remainder of the shaft (16).
摘要:
There is provided a rotary compressor comprising an electric element, and first and second rotary compression elements driven by the electric element, these components being provided in a hermetically sealed container, gas compressed by the first rotary compression element being discharged into the hermetically sealed container, and the discharged gas of intermediate pressure being further compressed by the second rotary compression element, first and second cylinders respectively constituting the first and second rotary compression elements, an intermediate diaphragm provided between the cylinders to partition each rotary compression element, a support member adapted to seal an opening surface of each cylinder, and provided with a bearing of a rotary shaft and an oil hole formed in the rotary shaft, wherein the intermediate diaphragm includes an oil supply groove for communicating the oil hole with a low pressure chamber in the second cylinder on a surface on the second cylinder side.
摘要:
There is provided a refrigeration unit (600) comprising a refrigerant closed circuit formed by communicating at least a compressor (500), a radiator (501) and an evaporator (503) through a refrigerant tube, and filled with carbon dioxide and an oil separator provided in the refrigerant closed circuit, wherein an oil storage portion of the oil separator and the compressor are connected to each other through a return oil tube (512).
摘要:
There is provided a rotary compressor capable of preventing deterioration of performance following plug (137) fixing carried out to prevent falling-off a spring member (76). The rotary compressor comprises a cylinder constituting a rotary compression element, a roller (46) engaged with an eccentric portion formed in a rotary shaft of an electric element, and eccentrically rotated in the cylinder, a vane abutted on the roller to divide an inside of the cylinder into a low pressure chamber side and a high pressure chamber side, a spring member for always pressing the vane (50) to the roller side, a housing portion of the spring member, formed in the cylinder, and opened to the vane side and a hermetically sealed container side, a plug (137) positioned in the hermetically sealed container (12) side of the spring member, and inserted into the housing portion to fit into a gap, and an O ring (138) attached around the plug to seal a part between the plug and the housing portion. In this case, a space between the cylinder and the hermetically sealed container is set smaller than a distance from the O ring to an end of the plug on the hermetically sealed container side.
摘要:
A double-cylinder two-stage compression rotary compressor (10) comprising a first and a second compressors (32, 34), driven by an electric motor (14), all accommodated in a sealed container (12). The first and the second compressor (32, 34) have respective first and second cylinders (40, 42) accommodating first and second rollers (48, 50), fitted on respective first and second eccentric cams (44, 46). The inner spaces of the first and second cylinders are partitioned by respective first and second vanes (52, 54) to form suction spaces and compression spaces. The two cylinders are separated by an intermediate partition panel (38), which has a central bore (36) for passing therethrough a shaft (16) of the motor (14). The center of the bore (36a) of the intermediate partition panel (38) facing the first roller (48) is offset away from the center of the shaft (16) to an angular position having a central angle about the center of the shaft in the range of 90 ± 45 degrees with reference to the first vane (52), and the center of the bore (36b) of the intermediate partition panel (38) facing the second roller (50) is offset about the center of the shaft (16) by an angle in the range of 270 - 360 degrees to increase the sealing areas of the rollers with the intermediate partition panel, thereby decreasing the leakage of the refrigerant gas and increasing volumetric efficiency and pressure efficiency of the compressor.
摘要:
A two stage rotary compressor is disclosed and includes first and second cylinders (38,40) separated by an intermediate partition plate (36) and first and second compressing elements (42,44) disposed in the first and second cylinders (38,40) respectfully, the compressing elements (42,44) being formed on a rotary shaft (16) spaced from each other by a portion of the shaft (90) that extends through an aperture (36a) in the intermediate partition plate (36). The portion (90) of the shaft (16) between the compressing elements (42,44) has a larger cross-sectional area than the cross sectional area of the remainder of the shaft (16).