Patent application number | Description | Published |
20100074784 | SCROLL COMPRESSOR - A scroll compressor (CP) in which the cylinder oil circulation rate of lubricant is optimized during the operation to improve the compression efficiency is provided. In the scroll compressor (CP) having a stepped shape, the cylinder oil circulation rate of lubricant taken into the scroll compressor (CP) and circulated together with refrigerant is set to fall within the range from 1% or more to 10% or less. | 03-25-2010 |
20100083690 | MULTISTAGE COMPRESSOR - A multistage compressor is provided, which can reduce an oil circulation ratio by reducing the amount of lubricating oil to be taken in by a high-stage compression mechanism to improve the system efficiency and prevent a shortage of lubricating oil. A low-stage compression mechanism and a high-stage compression mechanism are disposed below and above to flank an electric motor, respectively, intermediate-pressure refrigerant gas compressed by the low-stage compression mechanism is discharged into a sealed housing, and the intermediate-pressure refrigerant gas is taken in by the high-stage compression mechanism so as to be compressed in two stages, an oil separator plate that centrifugally separates lubricating oil contained in the intermediate-pressure refrigerant gas, which is taken in by the high-stage compression mechanism after passing through the electric motor, is provided at one end of a rotor of the electric motor such that a rotary shaft extends through the oil separator plate. | 04-08-2010 |
20100092318 | Scroll compressor - Intended is to provide a scroll compressor capable of performing three-dimensional compressions, which can optimize a tip clearance in operation while considering a thermal expansion and a pressure deformation and which can reduce a compression leakage to improve a compression efficiency thereby to realize a high performance. The leading end faces ( | 04-15-2010 |
20100111705 | REFRIGERANT COMPRESSOR - A refrigerant compressor is provided that can be assembled easily and can quickly discharge lubricating oil that leaks from contact sliding parts of its mechanical seal so as to prevent the oil from turning into sludge around the stationary ring. In a refrigerant compressor in which a mechanical seal which shaft seals the inner side and the outer side of a housing is installed at a portion of the housing through which a rotating shaft penetrates, a mechanical seal comprises a stationary ring securely fastened to the inner circumferential surface of a boss portion, a rotary ring securely fastened to the outer circumferential surface of the rotating shaft to the inside of the stationary ring so as to face the stationary ring, whereby sliding contact is formed between sides of the stationary ring and the rotary ring. The inner circumferential surface of the boss portion to the outside of the stationary ring is provided with an inclined portion over the entire circumference or at least the gravitationally lower portion of the inner circumferential surface, which enlarges from the stationary ring side toward an oil discharge hole to the outside of the stationary ring. | 05-06-2010 |
20100143172 | Multistage Compressor - A multistage compressor employing a gas injection system for CO | 06-10-2010 |
20100158732 | Scroll Type Fluid Machine - To provide a scroll type fluid machine which can ensure that even when the pressure ratio of the pressure P | 06-24-2010 |
20100226807 | SCROLL-TYPE FLUID MACHINE - Provided is scroll-type fluid machine that facilitates the formation of a back-pressure chamber so as to increase the design freedom in the space on the back side of the revolving scroll member, where it is difficult to ensure sufficient space, by decreasing, as much as possible, the installation space of the sealing member partitioning the back-pressure chamber. In the scroll-type fluid machine, a back-pressure chamber to which high-pressure gas is introduced is partitioned between the revolving scroll member and a fixed support member, a sealing member is constructed of an annular U sealing member, the annular U sealing member is oriented in a direction orthogonal to the back side of the revolving scroll member, and one side contacts a side surface (sealed surface) of a fixed support member. | 09-09-2010 |
20100303661 | SCROLL-TYPE COMPRESSOR - A scroll-type compressor whose capacity can be easily changed and with which an inconvenience can be prevented is provided. A scroll-type compressor includes a fixed scroll having a first spiral-shaped wall member provided upright on a side surface of a first end plate, and an orbiting scroll having a second spiral-shaped wall member provided upright on a side surface of the second end plate, the orbiting scroll being supported so as to be capable of orbital revolution movement while being prevented from self rotation by meshing the wall members with each other. Wall-member stepped portions having a small height at the center and a large height at the outer side in a direction along the spiral are formed on the upper edges of the first and second wall members. End-plate height-difference portions having a large height at the center and a small height at the outer side in the direction along the spiral are formed on the side surfaces of the first and second end plates, at positions facing the wall-member stepped portions. One of the first and second wall members has a cutout portion formed at the outer end in the direction along the spiral and has a smaller spiral-end angle than the other of the first and second wall members. | 12-02-2010 |