Abstract: A refrigerant compressor improved in pressure-resistant strength of a closed vessel. In a prior-art refrigerant compressor, a three-phase integral type sealed terminal in which three pins connected to a three-phase power source are disposed on one metal base portion, is attached to a body portion of a closed vessel for supplying electric power to an electric motor. When a high hydrostatic pressure load is applied to the closed vessel, the closed vessel is deformed into a barrel shape, and the sealed terminal pulled in the circumferential direction due to the deformation of the closed vessel is deformed elliptically. There may arise a problem with a glass material for insulating the metal base portion from the pins.

Abstract: A compressor includes a compression mechanism part for compressing refrigerant sucked from an outside of the hermetic container and discharging compressed refrigerant to a discharge space, an electric motor part composed of a stator and a rotor, facing a first space which is at an opposite side of the discharge space with respect to the compression mechanism part in the hermetic container, for driving the compression mechanism part through a main shaft, a passage at an external circumferential side of the compression mechanism part, for connecting the discharge space with the first space, and a fan provided at an end of the rotor, facing the first space. The refrigerant discharged into the discharge space passes through the passage at the external circumferential side of the compression mechanism part to reach the first space, and passes the fan to be discharged to the outside of the hermetic container.

Abstract: According to a scroll compressor of the present invention, at least one of a diameter space between an upper fitting surface of the guide frame and an upper fitting surface of the compliant frame at an upper fitting part where the upper fitting surface of the guide frame contacts with the upper fitting surface of the compliant frame, and a diameter space between a lower fitting surface of the guide frame and a lower fitting surface of the compliant frame at a lower fitting part where the lower fitting surface of the guide frame contacts with the lower fitting surface of the compliant frame is set to be equal to or shorter than a diameter space between the rotor and the stator.

Abstract: On the assumption that pressure Pm1 (MPa) of a boss portion outside space determined by a restrictor and a flow regulating valve provided midway in an oil feed passageway is expressed by Pm1=Ps+&agr;, and a differential pressure value at which a difference between high and low pressures becomes minimum in a running pressure range of a scroll compressor is represented by min(Pd−Ps), the value a in the above expression is set to fall in a range expressed by 0<&agr;<min(Pd−Ps). Here, Ps represents suction pressure (MPa) of the compressor, and Pd represents discharge pressure (MPa) of the compressor.

Abstract: A refrigerant-circulating system which comprises a refrigeration cycle comprising a refrigerant compressor, a condenser, an expansion mechanism and an evaporator to form a refrigerant circuit and employing a refrigerant which contains no chlorine, wherein an aromatic polyether oil having as a base oil structure a benzene ring having an ether bond is employed as a refrigerator oil.

Abstract: There is described a semiconductor device including a memory block which has a plurality of sense amplifier columns and a plurality of memory cells capable of establishing continuity with one of the plurality of sense amplifier columns. The semiconductor device enables simultaneous designation of row and column addresses. Sense amplifier columns and memory arrays are arranged such that the sense amplifier columns alternate with the memory arrays. By designation of a row address, memory cells pertaining to a relevant column are connected to the sense amplifier column, and the thus-connected sense amplifier column is activated. Data line connection transistors are provided between a sense amplifier and a pair of data lines. Further, the sense amplifier column is provided with an AND circuit which receives a column selection signal produced through designation of the column address and an activation signal SON used for activating the sense amplifier.

Abstract: When a special operation mode is instructed, a test oscillation circuit operating at a cycle shorter than a refresh oscillation circuit specifying the cycle of self refresh is activated according to an external row address strobe signal. The internal row address strobe signal is provided to row related control circuitry via a selector. An internal row address strobe signal can be rendered active at a cycle shorter than the cycle of the external row address strobe signal, to carry out row selection. A row is selected at a cycle shorter than the transition cycle of an external signal.

Abstract: A fluid scroll machine including two scrolls eccentrically combined with each other and defining a hermetically closed space which moves as the scrolls are rotated synchronously with each other, wherein the central parts of the vortical portions of the scrolls are notched so that an opening is provided between the scrolls; and an Oldham's coupling for transmitting the torque of one of the scrolls to the other is provided in the opening.

Abstract: A turbomolecular pump is disclosed which has reduced axial length so as to provide a small-sized pump, and which also has improved stability during high-speed operation, is simple in construction, and is able to operate at much higher speeds than prior art devices.

Abstract: A turbine includes a plurality of blades mounted on a rotary pedestal such that the pedestal is rotatable in the same direction regardless of the direction of flow. Conversion efficiency is improved by generally locating the zero lift plane of the blades on a cylindrical or conical surface coaxial with the rotary output.