Abstract: A refrigerating cycle apparatus including a compressor of compressing carbon dioxide (CO2) refrigerant, a radiator of cooling the refrigerant pressurized by the compressor, a pressure reducing valve that is arranged more downstream of the radiator along the refrigerant flow and depressurizes and expands the cooled refrigerant, and an evaporator that heats the refrigerant depressurized by the pressure reducing valve, wherein the refrigerant flow path of the radiator and/or said evaporator is has a diameter of 1 mm or less; and a refrigeration lubricant of which main component is a polar oil miscible with the CO2 refrigerant is utilized.

Abstract: The present specification discloses a compressor characterized in that a nonpolar solvent is used as a working fluid and an insulation part of a rotating section is formed from a low dielectric constant plastic film having a specific dielectric constant of 1.2 to 3.0. This compressor has been reduced in leakage current and improved in safety and reliability, and therefore can realize energy savings for devices such as a refrigerant system device.

Abstract: To prevent heat transfer inhibition and an increase in pressure loss due to refrigerating machine oil discharged into a cycle, and to provide a compact and highly efficient refrigerating cycle apparatus using carbon dioxide gas (CO2).

Abstract: The present specification discloses a compressor characterized in that a nonpolar solvent is used as a working fluid and an insulation part of a rotating section is formed from a low dielectric constant plastic film having a specific dielectric constant of 1.2 to 3.0. This compressor has been reduced in leakage current and improved in safety and reliability, and therefore can realize energy savings for devices such as a refrigerant system device.

Abstract: The present specification discloses a compressor characterized in that a nonpolar solvent is used as a working fluid and an insulation part of a rotating section is formed from a low dielectric constant plastic film having a specific dielectric constant of 1.2 to 3.0. This compressor has been reduced in leakage current and improved in safety and reliability, and therefore can realize energy savings for devices such as a refrigerant system device.

Abstract: The present specification discloses a compressor characterized in that a nonpolar solvent is used as a working fluid and an insulation part of a rotating section is formed from a low dielectric constant plastic film having a specific dielectric constant of 1.2 to 3.0. This compressor has been reduced in leakage current and improved in safety and reliability, and therefore can realize energy savings for devices such as a refrigerant system device.

Abstract: A rotary compressor has a cylinder, a crank shaft having an eccentric part disposed in said cylinder, a bearing which rotatably supports said crank shaft, a roller which moves in said cylinder following said eccentric part, and a vane whose all or part of the tip is of R configuration, wherein a groove with which the vane tip is disposed in contact is provided on the outer periphery of said roller, a first oil groove is provided on the end face of said roller, and said roller is provided with an oil hole communicating said first oil groove and said groove of the roller.

Abstract: A rotary compressor has a cylinder, a crank shaft having an eccentric part disposed in said cylinder, a bearing which rotatably supports said crank shaft, a roller which moves in said cylinder following said eccentric part, and a vane whose all or part of the tip is of circular configuration, wherein a groove with which the vane tip is disposed in contact is provided on the outer periphery of said roller, a first oil groove is provided on the end face of said roller, and said roller is provided with an oil hole communicating said first oil groove and said groove of the roller.

Abstract: Corrugated fins are provided at opposing sides of a corrugated thermoelectric device constituting a thermoelectric circuit. This air conditioner is obtained by superposing a plurality of the thermoelectric devices. When a current is fed to the thermoelectric devices, heat is absorbed from one of two fluids running through the corrugated fins and discharged to the other fluid, so as to define a heat pump cycle is defined. The thermoelectric devices are superposed so that the confronting surfaces of the neighboring thermoelectric devices constitute a heat radiation surface respectively and a cooling surface. The corrugated fins intersect with each other, so that the two fluids are prevented from mingling and are allowed to flow in and out of different surfaces.