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JP3369786B2 |
A scroll type fluid displacement apparatus includes a first and a second scroll, each having an end plate and a spiral wrap extending from one side of the end plate. The spiral wraps interfit at an angular and radial offset to make a plu...
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JP2003013876A |
To enhance the oil intrusion preventive effect by an oil intrusion preventing member used to prevent the oil from leaking into the pump chamber of a vacuum pump.A shaft sealing ring 49 is fitted fast on a rotary shaft 19 in a fitting hol...
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JP2003013872A |
To provide a scroll type compressor equipped with a motor as a driving source to drive a refrigerant compressing mechanism capable of effectively reducing the sliding resistance by regulating the force applied to a movable scroll to a pr...
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JP2003003978A |
To provide a helical type fluid compressor holding sure seal performance with no special seal member required to make the atmosphere of low pressure on the inside of a case with high performance, high reliability, at a low cost.This flui...
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JP2002371982A |
To prevent reduction in volumetric efficiency even in a rotary compressor using a carbon dioxide refrigerant. The rotary compressor 1 comprises a plurality of rotary compression elements 5 comprising cylinders 14 and 15 with both end ope...
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JP2002371979A |
To provide an oil free type scroll fluid machine minimizing falling down or backlash of a rotary scroll, and having high efficiency and a long life. In this scroll fluid machine, a spiral shaped compressing chamber 46 gradually decreasin...
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JP2002371978A |
To prevent leakage of compressed fluid from a tip seal portion fitted in a tip seal groove provided at a tip end of a fixed lap or a rotary lap, in a scroll fluid machine. Recessed portions 22, 23 are formed on a part of an inner surface...
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JP2002339867A |
To provide a sealing structure and a compressor provided with the sealing structure for a housing of an easily recycled and compactly composed compressor.In a joint of a cylinder block 1 and a front housing 2, an end face of the cylinder...
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JP3349867B2 |
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JP3349559B2 |
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JP2002332963A |
To improve oil entering preventing action due to an oil entering preventing portion used for preventing the leakage of oil to a pump chamber in a vacuum pump.A ring-shaped shaft seal annular element 49 is fitted and fixed to a rotating s...
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JP2002332974A |
To provide a scroll type machine having two scroll type compressors in a single exterior shell.The inside of the exterior shell 12 is divided into a sucking pressure chamber 90 and two discharging pressure chambers 80, and two scroll typ...
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JP3347209B2 |
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JP3344825B2 |
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JP3344843B2 |
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JP2002317765A |
To prevent deterioration resulting from the leakage of discharge gas and the generation of abnormal noises.This compressor comprises a suction chamber 23 for sucking a medium into a casing 1, a discharge chamber 12 for discharging and re...
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JP3338568B2 |
PURPOSE: To utilize pressure entering in a recessed groove and make a sealing member float from the recessed groove in the whole length so as to surely improve sealing and compression performances. CONSTITUTION: Side lip parts 8, 8,... a...
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JP3338886B2 |
PURPOSE: To reduce the maximum value and the fluctuation width of upsetting moment exerted on a revolving scroll. CONSTITUTION: An inner region on which floating force F1 is exerted and an outer region on which pressing force FO is exert...
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JP3338560B2 |
PURPOSE: To prevent the wear and damage of the respective tip parts of a seal member by providing a seal member with a plurality of lip parts which are brought into contact with one side surface of the recessed groove of a lap part and w...
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JP2002310080A |
To provide a rotary compressor mitigating lubricating conditions of a linear contact part between the outer circumferential face of a rolling piston and a tip part of a vane, preventing abnormal abrasion and seizure in the linear contact...
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JP2002310075A |
To provide a scroll type compressor favorably floating tip seals without causing increase in the cost, reducing the leakage of refrigerant to a low- pressure side compression chamber, and improving the compression efficiency.This scroll ...
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JP2002310301A |
To provide a sealing member reducible in cost and a cooling medium compressor with the sealing member.A gasket 40 comprises a first sealing portion 42 assembled on a joint face B between a front side end face 10a of a cam ring 10 and a r...
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JP2002535539A |
A method and apparatus for compressing process fluids in a working chamber having a male and a female rotor, each supported by shafts in a first and a second bearing chamber maintained at low and high pressures at least equal to 90% of t...
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JP3337610B2 |
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JP3336721B2 |
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JP2002285981A |
To provide a technology which is effective for feeding lubrication oil to a desired lubricating part of a scroll type compressor, provided with an electric motor as a driving power source driving a coolant compressing mechanism and disch...
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JP2002285982A |
To provide a technology effective for feeding lubrication oil to a desired lubricating part of a scroll-type compressor provided, with an electric motor as a driving power source for driving a coolant compressing mechanism, and dischargi...
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JP3328451B2 |
PURPOSE: To provide a scroll compressor effective for improving a function and reliability by eliminating the deformation of a joint section with a stationary scroll seriously affecting the function and reliability due to frame deformati...
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JP3327702B2 |
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JP2002266778A |
To prevent a tip seal from abrading a mating-material and reduce the abrasion of the tip seal itself by providing the abrasion surface of the tip seal with superior lubrication.This spiral tip seal is used for a scroll type compressor fo...
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JP2002257244A |
To improve the sealing function of a labyrinth seal for preventing oil leakage to a pump chamber, in a vacuum pump.Annular shaft seal ring bodies 49 and 50 are fitted and fixed into/to rotary shafts 19 and 20 within fitting holes 47 and ...
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JP2002257070A |
To improve a preventing effect of oil intrusion into a pump chamber in a vacuum pump.Annular shaft sealing ring bodies 49 and 50 are engaged with and fixed to rotating shafts 19 and 20 in engaging holes 47 and 48 formed in a rear housing...
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JP2002527670A |
A scroll-type vacuum pump wherein an expander and a compressor are arranged in series, in two stages, in the same housing and driven by the same shaft. The first stage is a scroll-type expander. It is in series with a scroll-type compres...
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JP2002227781A |
To provide a scroll type compressor capable of adjusting the pressure in a back pressure chamber without using any spring.The base plate 24 of each movable scroll is furnished with a communication hole 60 to generate communication of a m...
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JP3314562B2 |
PURPOSE: To provide a scroll compressor ensuring reliability even in the heavy operation such as high efficiency and high speed and high load operation or the like, simplifying the structure, and reducing the cost. CONSTITUTION: An eccen...
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JP2002221178A |
To secure favourable sealing performance in a vacuum pump using fluorine contained oil.Rubber made lip rings 50, 51 are arranged on peripheral surfaces 192, 202 of rotating shaft 19, 20 between radial bearings 37, 38 and rotors 27, 32. L...
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JP2002221157A |
To secure good sealing performance and to extend the service life of a lip seal at a low cost in a vacuum pump.A relieving hole 53 is formed in the upper wall 332 of a gear housing 33. The relieving hole 53 comprises a small diameter par...
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JP2002221177A |
To provide a shaft sealing structure capable of performing an increase of the longevity of a lip seal while securing favourable sealing performance, in a vacuum pump.Rubber made lip rings 51, 52 are arranged on peripheral surfaces of rot...
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JP2002221170A |
To provide a strong scroll compressor provided with a scroll having high fatigue resisting strength and capable of keeping sufficient sealability, and capable of being miniaturized and reduced in weight.This scroll compressor carries out...
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JP2002523684A |
A dry-compressing screw pump in the form of a two-shaft positive displacement pump. A first and a second rotor spindle are disposed parallel to each other. The rotor spindles are hollow. A cooling medium is fed at a first front face of t...
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JP2002202074A |
To provide a scroll type compressor capable of improving air tightness performance without requiring a fixing plate of selection fitting even if a sealing structure of an outer shell is simplified and of reducing cost of parts as well as...
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JP2002180981A |
To feed a sufficient quantity of lubricating oil to a sealing material for gas leakage prevention provided in a region between the high-pressure side and the low-pressure side in a scroll type compressor formed with a high- pressure regi...
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JP2002180978A |
To provide an effective art in securing sealing performance of a drive shaft driving a movable scroll and suppressing a power loss in a scroll type compressor.This scroll type compressor 1 is provided with a plain bearing 62 between the ...
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JP2002180980A |
To provide a scroll type compressor suppressing abrasion of a tip seal by slide contact with an opening edge part of a bypass hole while avoiding problems in the conventional art in the scroll type compressor engaging a fixed scroll havi...
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JP3295090B2 |
A scroll compressor includes a fixed scroll member and an orbiting scroll. The orbiting scroll member is operatively connected to a motor to be driven in an orbiting motion by the motor. The scroll members each include a plate having an ...
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JP2002168182A |
To provide a scroll compressor having an operating pressure as a high discharge pressure, preventing an increase in weight due to the secured strength of a fixed scroll and a rear casing and a decrease in the reliability and performance ...
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JP2002161877A |
To improve durability and reliability against temperature changes or the like by stably fitting a core metal of a seal member to an end plate of a turning scroll with a coming-off preventing protrusion.Respective compressed chambers 15 a...
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JP3287573B2 |
A scroll compressor in which an axial compliance equal to that ina conventional scroll compressor is realized during a steady running, i.e., the tips and roots of plate-like spiral teeth are allowed to slide with a slight contacting forc...
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JP3286432B2 |
PURPOSE: To prevent reduction of durability of a bearing part so as to eliminate discharge of oil by supplying oil from an oil reservoir to the circumference of a driven shaft always in its liquid state and preventing the oil from flowin...
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JP3286455B2 |
PURPOSE: To enable high compression ratio operation without increasing number of windings of a spiral scroll and eliminate valve noises of a discharge valve in a compression mechanism of a scroll compressor wherein a fixed scroll and a m...
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