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WO/2024/074801A1 |
Multistage vacuum pump and stator for such a pump comprising: two half shell components (10) defining a void for receiving two rotors and forming a plurality of pumping chambers. An outer casing (20) is provided to surround and enclose t...
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WO/2024/071543A1 |
Disclosed is a scroll compressor. The scroll compressor may comprise: a retainer block inserted into a block insertion groove of a non-orbiting scroll; and a block support member that is provided between the retainer block and a back pre...
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WO/2024/062215A1 |
A vacuum pump shell stator (12, 14) comprising: a seal groove (50, 52) formed in a surface of the shell stator (12, 14), the seal groove (50, 52) being defined by a first side wall (60), a second side wall (62) opposite to the first side...
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WO/2024/058333A1 |
The present invention provides a scroll compressor which can minimize deformation of a valve plate, in an injection valve assembly, and can maintain a flat shape because even if a bead part of a gasket retainer is pressed down, the defor...
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WO/2024/042012A1 |
A scroll pump seal for inhibiting fluid flow into and out of a pumping chamber defined between a first scroll and a second scroll of a scroll pump is disclosed. The first and second scroll are configured for relative orbital motion. The ...
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WO/2024/040418A1 |
A sealing system for a crawler robot. The system comprises a sealing device body (1), wherein the sealing device body (1) is provided with a sealing groove (2), and a pressing plate (3) is provided on the sealing device body (1); a seali...
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WO/2024/035791A1 |
A compressor may include non-orbiting and orbiting scrolls, a hub plate, and primary and secondary discharge valve assemblies. The non-orbiting scroll includes a first end plate having primary and secondary discharge passages. The hub pl...
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WO/2024/022295A1 |
A scroll compressor and a refrigeration device. The scroll compressor comprises a housing (10), wherein a partition plate (12) is provided in the housing (10); the partition plate (12) divides the interior of the housing (10) into a disc...
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WO/2024/002348A1 |
A fixed scroll assembly (100) and a scroll compressor comprising the fixed scroll assembly (100). The fixed scroll assembly (100) comprises a fixed scroll part (110), at least two bypass inlet sections (111), piston chambers (121), bypas...
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WO/2023/243270A1 |
Provided is a screw compressor in which air and the like can be prevented from being mixed into steam in a compression chamber and compression performance can be improved.　This screw compressor comprises a casing 2 that forms a compres...
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WO/2023/242824A1 |
A positive-displacement pump or turbine (10) includes a rotor casing (14) that defines a rotor chamber (32) having a contoured wall (34) that forms a plurality of lobes (20, 22, 24, 26). A rotor (30) is positioned within the rotor chambe...
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WO/2023/243768A1 |
Provided is a scroll compressor. The scroll compressor comprises: a first rotary scroll coupled to a first eccentric part of a rotary shaft to create a first compression chamber; a second rotary scroll coupled to a second eccentric part ...
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WO/2023/240969A1 |
An oil return structure of a compressor, a compressor, and an air conditioner. The oil return structure of a compressor comprises: a static disc (2) and a cover body (1); the end surface of the static disc (2) facing the cover body (1) i...
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WO/2023/224241A1 |
The present invention relates to a scroll compressor comprising: a shaft rotated by a driving source; an orbiting scroll carrying out an orbiting motion by the shaft; a fixed scroll engaged with the orbiting scroll; and a main frame comp...
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WO/2023/204456A1 |
An embodiment of the present invention provides a scroll compressor comprising: a housing; a motor provided in the housing; a rotary shaft rotated by the motor; an orbiting scroll interlocked with the rotary shaft to perform orbital moti...
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WO/2023/204301A1 |
Provided is a compressor including: a cylindrical motor case (110) that surrounds a compression mechanism (200) about the axis (X) thereof; a lower case (130) that blocks an opening (111) of the motor case (110) and that is mated with an...
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WO/2023/204354A1 |
A scroll compressor is provided. The scroll compressor comprises a main frame provided between a first compression unit and a second compression unit, and the main frame may comprise at least one back pressure communication unit communic...
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WO/2023/204302A1 |
The present invention comprises: a cylindrical motor case (110) that encircles an axis (X) of a compression mechanism (200); a lower case (130) that closes an opening (111) of the motor case (110) and fits against the inner peripheral su...
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WO/2023/204353A1 |
A scroll compressor is provided. The scroll compressor comprises: a first compression part comprising a first stationary scroll and a first orbiting scroll; and a second compression part comprising a second stationary scroll and a second...
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WO/2023/197944A1 |
A compressor (1) and an additional oil injection system having the compressor (1). The compressor (1) is provided with a compression cavity (11) and a gas discharge opening (12). The compression cavity (11) is in communication with the g...
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WO/2023/187377A1 |
A non-contacting scroll pump (100), the non-contacting scroll pump comprising a housing (110), an orbiting scroll (130) located within the housing, and a thrust bearing assembly (170) located within the housing for axially supporting the...
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WO/2023/187378A1 |
A non-contacting scroll pump (100), the non-contacting scroll pump comprising a housing (110), an orbiting scroll (130) located within the housing, and a thrust bearing assembly (170) located within the housing for axially supporting the...
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WO/2023/187375A1 |
A non-contacting scroll pump (100), the non-contacting scroll pump comprising a housing (110), an orbiting scroll (130) located within the housing, and a thrust bearing assembly (170) located within the housing for axially supporting the...
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WO/2023/187376A1 |
A non-contacting scroll pump (100), the non-contacting scroll pump comprising a housing (110), an orbiting scroll (130) located within the housing, and a thrust bearing assembly (170) located within the housing for axially supporting the...
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WO/2023/187379A1 |
A non-contacting scroll pump (100) comprising an orbiting scroll (130), a fixed scroll (120), a drive shaft (140) coupled to the orbiting scroll, wherein the drive shaft is movable relative to the fixed scroll in an axial direction. The ...
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WO/2023/182457A1 |
The present invention provides a screw compressor in which a compression chamber (25) is formed inside a cylinder part (16) by a screw rotor (40) and a gate (53), wherein an intake-side end part (42) of the screw rotor (40) is formed int...
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WO/2023/177410A1 |
A compressor may include a shell assembly, first and second scrolls, a floating seal assembly, a modulation-valve ring, and a modulation-control-valve assembly. The shell assembly may define a suction-pressure region. The first scroll ma...
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WO/2023/172089A1 |
The present invention provides a scroll compressor comprising: a casing forming the outer appearance and having an oil storage space; an electromotive part installed inside the casing to generate power; a rotation shaft rotatably install...
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WO/2023/128352A1 |
An electric compressor is disclosed. The electric compressor according to one embodiment of the present invention has improved stability of sealing an inverter body, and thus improves the assemblability of a housing and an inverter cover.
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WO/2023/117210A1 |
The invention relates to a refrigerant compressor (100) for mobile applications, having a compressor section (30) and a motor section (10), wherein variable compression chambers (39) are formed in the compressor section (30) in order to ...
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WO/2023/118819A1 |
Vacuum pump (10) comprising a substantially hermetically sealed enclosure (40), a core pump assembly located within the enclosure (40), and an inert purge gas inlet (70) fluidly connected to the enclosure (40) for supplying inert purge g...
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WO/2023/106140A1 |
Provided is a shaft seal that exhibits excellent seal-ability and has low torque characteristics. A shaft seal 11 which is an annular shaft seal bonded to the outer circumferential surface of a rotary shaft to seal a sealed fluid. A gap ...
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WO/2023/089965A1 |
A screw compressor includes a screw rotor including a rotor tooth portion and a discharge-side shaft portion, and a casing having a housing chamber that houses the rotor tooth portion, an axial hole through which the discharge-side shaft...
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WO/2023/080489A1 |
The present invention provides a vane rotary compressor including two compression units in which a suction stroke and a compression stroke are point symmetrical with respect to the center of rotation, wherein a plurality of vanes are gui...
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WO/2023/065753A1 |
A bearing cylinder for a compressor, a compressor and an air conditioner. The bearing cylinder comprises an outer ring (1), a rolling body (2) and an inner ring (3), wherein the rolling body (2) can be arranged between the outer ring (1)...
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WO/2023/054855A1 |
A scroll compressor according to the idea of the present disclosure may comprise: a fixed scroll provided inside a main body; an orbiting scroll provided to make an orbiting motion relative to the fixed scroll and including an orbiting e...
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WO/2023/039269A1 |
A vacuum pump includes a motor, a pump coupled to the motor to receive torque therefrom, and a trestle including an inlet port, an outlet port, and a fluid pathway therebetween, the outlet port being fluidly connected to the pump. The va...
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WO/2023/001718A1 |
Dry rough-vacuum pump (1) comprising a stator (11) formed by at least one end support (12a, 12b) coupled axially to at least two stator elements (13) assembled to form at least one pumping stage (8a, 8b, 8c, 8d), and two shafts (9) provi...
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WO/2023/283660A1 |
The invention relates to a rotary piston compressor (1) for compressing gas, in particular carbon dioxide, in which compressor a side wall surface (7) of a housing side wall (4) and a planar sealing surface (8, 9) of each housing cover (...
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WO/2023/274919A1 |
The invention relates to a dry-compression or oil-free compressor for generating a compressed gas and to method for oil separation for a dry-compression compressor (1). The compressor has a compressor housing (4), a compression space (5)...
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WO/2022/268356A1 |
The invention relates to a screw compressor (10), comprising: - at least one suction gas inlet (12); - at least one screw rotor (14), which has a screw-rotor center axis extending in an axial direction; - at least one compressed gas outl...
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WO/2022/217970A1 |
A screw compressor host having valve seats integrated and integrally arranged, comprising a housing (8). The housing (8) is provided with valve seats (1). The valve seats (1) are integral to the housing (8). Valve cavities (2) are arrang...
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WO/2022/179819A1 |
Dry vacuum pump (1) with two rotor shafts and a stator (2) having at least a first and a second complementary half-shells of which a first half-shell (3) has at least one seal groove (16) provided in a joining surface (10) of half-shells...
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WO/2022/159591A1 |
A compressor includes a shell, a muffler plate, first and second scroll members, and first and second sealing members. The shell defines first and second pressure regions separated by the muffler plate. The first scroll member includes a...
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WO/2022/152228A1 |
A scroll compressor (100) comprising a first scroll compression mechanism (CM1), a second scroll compression mechanism (CM2), a drive shaft (130), and a bushing (191; 192); the first scroll compression mechanism (CM1) has a first fixed s...
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WO/2022/149038A1 |
Method of communicating ballast gas to a rotary vane vacuum pump and rotary vane vacuum pump (300) comprising a gas ballast assembly (330). The gas ballast assembly (330) comprises a gas ballast passage fluidly connected to a stator cham...
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WO/2022/136157A1 |
A scroll compressor for generating oil-free compressed air, in particular for a compressed air brake system of a lorry, with a drive which is arranged in a housing (4) and is connected to an orbiting displacer scroll (31, 32) which has a...
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WO/2022/127768A1 |
A scroll compressor (100), comprising: a housing (110), a low pressure region (LR) in air suction pressure being defined within the housing; a compression mechanism (CM), the compression mechanism being disposed within the housing and co...
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WO/2022/124707A1 |
The prevention invention relates to an electric compressor for a vehicle, and provides an electric compressor structure for a vehicle, wherein an electrical connection structure between a sealing terminal connecting an inverter unit to a...
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WO/2022/103163A1 |
The invention relates to a device for compressing a gaseous fluid, in particular a scroll compressor for compressing a refrigerant. The device (1) has a housing (2) with a wall (12) and a compression mechanism with an immovable stator (3...
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