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WO/2016/052296A1 |
Provided is an oil-free screw compressor that can prevent lubricating oil from flowing in and maintain compression performance. The oil-free screw compressor is provided with: a casing 12 that has a rotor chamber 150; a bearing 22 that s...
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WO/2016/012758A1 |
The present invention relates to a multi-stage vacuum pump comprising: first and second half-shell stator components (102, 104) and first and second end stator components (22, 124) which when assembled define a plurality of pumping chamb...
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WO/2015/185177A1 |
The invention relates to a vacuum pump (1) suitable for mounting to an engine, comprising a casing (2) having a cavity (4), and a moveable member (14) arranged for rotation inside the cavity (4), wherein the cavity (4) is provided with a...
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WO/2015/154907A1 |
The invention relates to a motor vehicle vacuum pump comprising a pump housing surface on which a noise absorption cap is mounted, said cap defining a noise damping volume.
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WO/2015/136803A1 |
Provided is an oil-free screw compressor having a shaft sealing device with good assembly properties and enabling the leakage of compressed gas from the shaft sealing device to be reduced. In the oil-free screw compressor (1): a pair of ...
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WO/2015/125596A1 |
[Problem] To provide a displacement compressor that is provided with a discharge mechanism that is highly efficient and that greatly reduces factors that lower the efficiency of a compression mechanism unit, such as internal leakage of a...
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WO/2015/013849A1 |
A wear compensation device for a pump end face wear plate comprises a wear plate (1), a wedge block (2) and a push rod (3). The wear plate (1) is flexible and is mounted between the pump body (4) and the pump cover (5), the wedge block (...
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WO/2015/003539A1 |
Multiple helical teeth (1, 2, 7, 8) are disposed on an outer diameter, an inner diameter, or a contacted surface of the outer diameter and the inner diameter of an interference designed shaft rubber seal provided with fixing rings and an...
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WO/2014/191362A1 |
The spindle compressor is a two-shaft rotary displacement machine which operates without operating fluid. The compressor has a compressor housing which has an inlet (34) and an outlet (35) for a gaseous medium to be pumped and a working ...
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WO/2014/183204A1 |
A method and system is provided for pressure balancing one or more seals in machines such as expanders and/or compressors using the process fluid which is being expanded or compressed to provide the pressure for pressure balancing the ot...
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WO/2014/164830A1 |
The present invention relates to compression based engine boosting systems, and, more particularly, to a supercharger configuration for higher pressure applications.
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WO/2014/163757A1 |
A thermal actuator for a rotating shaft shutdown seal that has a piston with a portion of its axial length enclosed within a chamber shell with a material that expands upon a rise in temperature. The portion of the actual length of the p...
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WO/2014/144617A1 |
Devices and methods for maintaining lubrication of a shaft seal of an open-drive compressor that is operating in a vacuum condition. The external side of the shaft seal allows retention of a volume of lubricant for extending the lifespan...
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WO/2014/138870A1 |
A rotary device for use with a fluid, having a housing, a rotor, and a vane having a respectively associated wiper. The housing has a tubular surface defining in part a tubular volume, the tubular volume segregated into at least a pumpin...
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WO/2014/132969A1 |
Provided is a vane-type rotation device which can suppress damage to the inner peripheral surface of a housing and a tip part of a vane, and can prevent seal leakage from occurring. The present invention comprises: a tubular housing; a r...
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WO/2014/117746A1 |
A rotor seal structure (10), comprising a rotor (11), at least one first seal sheet (14), and at least one abutting piece (151, 152); the rotor is provided with at least one side groove (111, 112); each side groove (111, 112) is provided...
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WO/2014/110930A1 |
A scroll compressor (100) comprises an orbiting scroll component (160); a fixed scroll component (150); sealing components (PS1, PS2, PS3, PS4, PS5, PS6), wherein the sealing components match a concave part (158) on the orbiting scroll c...
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WO/2014/103974A1 |
Provided is a gas compressor that supplies high-pressure back pressure to the vanes in the final stage of the compression step. A compressor main body (60) is provided in a housing (10) and has: a rotor (50) in which vane grooves (59) ar...
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WO/2014/050007A1 |
This rotary compressor (1) is provided with: a cylinder (32) extending in the vertical direction; a piston (35) housed in the cylinder (32) and forming a compression chamber (40) against the cylinder (32); a front head (33) that occludes...
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WO/2014/041680A1 |
At the interior of the housing (20) of this oil-cooled screw compressor (10), a separated gas supply pathway (59) is delineated for supplying separated gas to a separated gas supply gap (58) delineated between a first sealing unit and se...
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WO/2014/025025A1 |
This rotary compressor accommodates an electric motor and a compression mechanism that is linked to the electric motor via a rotary shaft in a sealed case. The compression mechanism is provided with: a cylinder having a cylinder chamber;...
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WO/2014/018505A1 |
Improved seal components for compressors, such as scroll compressors, are provided. Such seal components have a molded composite on a seal plate that is preformed, which serves as an improved face seal for floating seal assemblies. The p...
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WO/2014/006363A1 |
The present invention provides a scroll pump 60 comprising: a scroll mechanism 62 having an orbiting scroll 64 and a fixed scroll 66; a drive shaft having a concentric shaft portion 68 and an eccentric shaft portion 70 connected to the o...
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WO/2014/008500A1 |
A sealing joint for a compressor casing, such as a compressor casing for a centrifugal compressor of a chiller, is provided. The sealing joint may be configured to have a first cover and a second cover. A first mating surface of the firs...
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WO/2014/004141A2 |
A supercharger assembly has a rotor housing defining a chamber. A rotor is within the chamber and has an end with an end face. A seal has a seal face adjacent the end face. The seal face and the end face have complex topographies configu...
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WO/2013/142418A1 |
A scroll compressor that includes a housing and scroll compressor bodies disposed in the housing as well as a method of operation thereof is provided. The housing is separated into different chambers by a separator. One of the scroll bod...
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WO/2013/067099A1 |
A compressor for compressing refrigerant in a refrigerant circuit includes a housing defining a compression chamber. A screw rotor is mounted within the housing and configured to form a pocket of high pressure refrigerant and a pocket of...
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WO/2013/057946A1 |
A rotary compressor having two cylinders (6a, 6b), and two compression elements (4a, 4b) arranged on either side of a partition plate (5), with these compression elements having rolling pistons (8) inside the cylinders (6), and a cranksh...
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WO/2013/053062A1 |
A pump comprises a housing having an inner contour wall defining a fluid chamber. A rotor mechanism is positioned within the fluid chamber and comprises a belt and a rotatable rotor assembly. The belt is mounted to the rotor assembly. A ...
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WO/2013/018272A1 |
To provide a pump system for gas exhaust that makes it possible to minimize contamination of process gas with seal gas, and to reduce the amount of seal gas used. This pump system for gas exhaust has a main pump and a sub-pump. The main ...
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WO/2013/008399A1 |
Provided is a rotary mechanism that, in a gas exhaust pump, can secure safety of rotation even if the gap between a rotary shaft and a seal housing is markedly reduced compared to conventional gaps, and can also suppress the amount of se...
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WO/2012/131317A1 |
The present invention relates to a scroll compressor (10) which comprises: an orbiting scroll (20) having an orbiting scroll wall (35) extending axially from an orbiting scroll plate (37) towards a fixed scroll; a fixed scroll (22) havin...
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WO/2012/128267A1 |
The present invention provides an engine pump that has: a housing (1) having a cylinder space; an output shaft unit (2) formed with one or more pistons (4) capable of constant velocity true-circle rotation within the cylinder space, a ri...
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WO/2012/111863A1 |
The present invention relates to an apparatus for fixing a dust seal of a scroll compressor including a fixed scroll disposed at the upper portion thereof and an orbiting scroll coupled to the lower portion of the fixed scroll so as to o...
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WO/2012/096056A1 |
A scroll fluid machine having a rotating scroll for which rotating laps are arranged vertically on a panel that is supported in a rotatable manner on a drive shaft, and a stationary scroll which is provided opposing the rotating scroll a...
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WO/2012/096057A1 |
A dual-shaft rotor pump having a casing, two rotary shafts provided within the casing, two rotors provided respectively on the two rotary shafts and capable of rotating in mutually opposing directions, and shaft bearings and shaft seals ...
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WO/2012/086245A1 |
[Problem] To provide a hermetically sealed rotary compressor configured so that the joint between a cup and a bearing can be sealed without the use of a ring, etc. [Solution] An upper bearing (16A) has a stepped section (41), and the cor...
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WO/2011/110019A1 |
A rotary compressor is provided with a motor portion (22) and a compression mechanism portion (21) within a hermetic housing (1). The compression mechanism portion (21) includes more than one cylinder (23). In the cylinder (23) is provid...
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WO/2011/058339A2 |
The present invention provides a vacuum pump for pumping gas from a process chamber, the pump comprising: a rotor supported for rotation in a pumping chamber by a drive shaft, the shaft extending through a shaft bore in a wall of the pum...
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WO/2011/046591A1 |
An internal combustion engine (1 1) drivably connected to a variable displacement and variable internal compression ratio supercharger (18) that supplies varying amounts of air to the engine air intake manifold (12) that can range select...
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WO/2011/037178A1 |
A dry vacuum pump is provided with pump chambers (10A 10E) through which gas passes, an oil chamber (20) which is provided adjacent to the pump chamber (10E) and in which oil is present, rotating shafts (30) which penetrate through th...
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WO/2011/031766A2 |
A scroll compressor having a first compressor body with a first base, a first rib that projects from the first base, and a discharge port. A second compressor body has a second base and a second rib projecting from the second base. The f...
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WO/2011/018642A2 |
The present invention relates to a scroll compressor comprising a scroll pumping mechanism which comprises an orbiting scroll (20) having an orbiting scroll wall (34) extending axially from an orbiting scroll plate (36) towards a fixed s...
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WO/2011/018648A2 |
The present invention relates to a scroll pump (10) which comprises two scrolls (20, 22) which are co-operable for pumping fluid from an inlet to an outlet on relative orbiting motion of the scrolls. Each scroll (20, 22) comprises a scro...
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WO/2010/118140A2 |
A compressor may include a shell assembly defining suction and discharge pressure regions, first and second scroll members disposed within the shell assembly, and a capacity modulation assembly. The first scroll member may include a firs...
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WO/2010/105296A1 |
A mechanical seal is disclosed that has first and second sealing faces that are urged into contact to form a seal therebetween. One sealing face is mounted on a rotatable portion of the seal and the second sealing face is mounted on a su...
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WO/2010/090854A1 |
A face of a base of an orbiting scroll member is aligned with a thrust bearing. The thrust bearing includes a back pressure pocket and a seal for sealing the back pressure pocket to entrap a compressed fluid. There is a tap for tapping f...
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WO/2010/090853A1 |
A scroll compressor comprises a non-orbiting scroll member having a base and a generally spiral wrap extending from its base, and an orbiting scroll member having a base and a generally spiral wrap extending from its base. The wraps of t...
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WO/2010/072526A2 |
The invention relates to a vacuum pump, particularly a screw-vacuum pump, having a pump housing (14) wherein pump elements (10) are arranged. The pump housing (14) has a first flange (48) that is connected to a second flange (50) of a pu...
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WO/2010/047602A1 |
A swash pump for compressible fluids uses sealing contacts made between the nutatable swash plate and the fixed cone plates to centre and locate the inner swash sphere which slides against two resiliently mounted ring seals only, minimis...
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