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Matches 1 - 50 out of 7,451

Document Document Title
WO/2018/184853A1
The invention relates to a pumping unit (1) comprising:a rough-vacuum pump (2) of the multi-stage dry pump type comprising at least four pumping stages (T1, T2, T3, T4, T5)mounted in series, characterized in that the pumping unit (1) com...  
WO/2018/186357A1
Provided are a closed-type compressor and a refrigeration cycle device equipped with the same, the closed-type compressor being capable of ensuring a sufficient flow passage area of a discharge flow passage for discharging a gas refriger...  
WO/2018/177249A1
A vacuuming device, comprising a main body (110), a shaft (130), a vacuum-pump rotor (146), an electric-motor stator (160) and an electric-motor rotor (170). An air inlet (114), an air outlet (116), an oil reservoir chamber (120) and an ...  
WO/2018/174463A1
The present invention relates to a twin circle positive displacement pump having a check valve, comprising: a housing having an upper chamber and a lower chamber which are vertically communicated with each other and having a fluid inlet ...  
WO/2018/169072A1
Provided is a rotary compressor which includes first and second cylinders arranged in the axial direction of a driving shaft, and in which a suction path for supplying a refrigerant, supplied through a suction pipe from an external appar...  
WO/2018/154506A1
Injector (14) for injecting a liquid formulation into a molten polymer includes outlet (21) at one end and, at its other end, is arranged to be connected to upstream conduit (25) via a coupling housing (26) so that liquid formulation can...  
WO/2018/149598A1
The invention relates to a multi-stage rotary lobe pump having a plurality of pump chambers (14) in a pump housing (16, 18). Said pump chambers form respective pump stages (26, 28, 30, 32, 34), each pump stage having two bidentate rotary...  
WO/2018/145091A1
A compressor may include a first compression member, a second compression member, and a motor assembly. The second compression member is movable relative to the first compression member and cooperates with the first compression member to...  
WO/2018/139314A1
A refrigerant in a refrigerant circuit (11) includes a hydrofluorocarbon having the characteristic of causing disproportionation reactions. A compressor mechanism (40) has provided therein: a blade (51) integrally coupled to pistons (44,...  
WO/2018/138475A1
A pump assembly and method are disclosed. The pump comprises: a first housing part defining a first portion of a bore extending within the first housing part and shaped to receive a rotor; and a second housing part defining a second port...  
WO/2018/134610A1
An inter-stage coupling for a multi-stage vacuum booster pump, a vacuum pump and a method are disclosed. The inter-stage coupling for a multi-stage vacuum pump comprises: a first coupling face configured to be received by a first adjacen...  
WO/2018/134600A1
A rotor for a multi-stage vacuum pump, a multi-stage vacuum pump and a method are disclosed. The rotor comprises: a plurality of rotary vanes, the plurality of rotary vanes being axially displaced and coaxially aligned; a pair of end sha...  
WO/2018/131111A1
Provided is a multi-stage scroll compressor configured such that vibration and noise can be suppressed and the multi-stage scroll compressor is highly reliable. This multi-stage scroll compressor is provided with: a closed container; at ...  
WO/2018/131265A1
With a first rotation angle (θ1) in the circumferential direction of a cylinder (121) of a piston (125) positioned at top dead center being 360 degrees, when the piston (125) is positioned at a third rotation angle (θ3) having the medi...  
WO/2018/130819A1
A multiple stage vacuum pump and method of configuring such a pump is disclosed. The vacuum pump comprises: multiple vacuum pumping stages arranged in series between a gas inlet and an exhaust and comprising gas flow paths between the st...  
WO/2018/121844A1
Refrigeration appliance (1) comprising a compressor (2) effectuating circulation of a refrigerant to heat exchange units through a fluid circulation circuit, said compressor (2) further having a crankshaft (6) in fluid communication with...  
WO/2018/113276A1
An air compressor for a ship. The air compressor comprises: a screw compressor (2) which is driven by a motor (1), the screw compressor (2) comprising an air compression cavity and a lubricating oil passage; an oil and gas separator (4) ...  
WO/2018/116912A1
A rotary compressor according to an embodiment of the present invention is provided with a rotating shaft, a first cylinder, a second cylinder, and a partition plate. The first cylinder is provided with a first suction path. At least the...  
WO/2018/115815A1
A pump assembly is disclosed. The pump assembly comprises: a rotor (50) having a rotor shaft portion (80); a stator (100) having a bore portion defining a bore for receiving the rotor shaft portion; and a circumferential protrusion exten...  
WO/2018/113275A1
An air compressor, comprising: an integrated screw main machine (2) which is driven by a motor (1), the integrated screw main machine (2) being used for compressing air, a lubricating oil passage being provided in the integrated screw ma...  
WO/2018/115430A1
A method for producing a scroll compressor in which a cup-shaped housing (10) is provided which has a cylindrical peripheral wall (11) and a base (12) which limit an interior housing chamber (30), wherein • - an electric motor (18), ...  
WO/2018/115426A1
A scroll compressor having a housing (10) in which a movable displacer spiral (13), which is connected to an eccentric bearing (16) for conjoint rotation, and a stationary counterspiral (14) are situated, wherein the displacer spiral (13...  
WO/2018/110426A1
A compressor (5) is provided with a casing (10), a motor (20), and a compression mechanism (40). The casing (10) comprises a cylindrical section (11) having an inner diameter of a first size (D1). The motor (20) comprises a rotor (22) ha...  
WO/2018/110869A1
The present invention relates to a bicircular positive displacement pump comprising: a housing having an upper positive displacement chamber and a lower positive displacement chamber, which have up/down symmetry with each other, and whic...  
WO/2018/108479A1
The invention relates to a vacuum pump system, comprising a main vacuum pump (10) that is connected to a chamber (14) that is to be evacuated. An auxiliary pump (12) is connected to an outlet of the main vacuum pump (10). Furthermore, a ...  
WO/2018/105509A1
The invention relates to a compressor that extends along a longitudinal axis and comprises a casing housing a mechanism for compression of a coolant fluid, the compressor comprising at least one cover (13) comprising a metallic part (22)...  
WO/2018/103476A1
Disclosed are an air cylinder, a pump body assembly, a compressor, and a temperature adjusting apparatus. The air cylinder comprises a cylinder body (10), and a first cavity (11) and second cavity (12) formed in an axial direction of the...  
WO/2018/105603A1
The invention relates to an electric compressor that extends along a longitudinal axis and comprises at least one casing housing at least: - a mechanism for compression of a coolant fluid, - a drive unit arranged inside the casing and th...  
WO/2018/100342A1
A vacuum pumping arrangement (10), for use in a semiconductor fabrication assembly, comprises a first pump (12) which has a first inlet (14) and a first outlet (16). The first inlet (14) is fluidly connected to a first common pumping lin...  
WO/2018/094571A1
A rotary compressor is provided, comprising: a housing (1), a motor (2), and a compressing mechanism (3). Two ends in an axial direction of the housing (1) are provided with a first end wall (111) and a second end wall (131) respectively...  
WO/2018/097190A1
An oil-free compressor 1 is provided with: an oil-less first-stage compressor body 4; an oil-less second-stage compressor body 6 connected downstream of the first-stage compressor body 4 with respect to the flow of air; a suction valve 2...  
WO/2018/090809A1
Disclosed is a scroll compressor (1), comprising a stationary scroll member (50) and a movable scroll member (60) engaged with each other. The stationary scroll member (50) defines a first air inlet (In1), a second air inlet (In2), a fir...  
WO/2018/087652A1
A system of superchargers, which comprises two casings (1, 2), each of which includes a pair of rotors (3, 4, 5, 6) which are provided with two or more lobes (7) meshed with each other so as to rotate together in opposite directions arou...  
WO/2018/076480A1
Disclosed are a crankshaft and a rotary compressor comprising the crankshaft. The crankshaft (1) comprises a long shaft (11) and a short shaft (12). A ratio of an external diameter of the long shaft (11) to an inner diameter of a compres...  
WO/2018/054867A1
The invention relates to a system (1) for a utility vehicle comprising a compressor (10), an electric motor (5) and an electronic drive system (94), the electric motor (5) driving the compressor (10). The electric motor (5), and the elec...  
WO/2018/054285A1
A compressor, comprising: a casing assembly (1000); a crankshaft (2000) located inside the casing assembly (1000); and a clutch assembly (4000) connected to the crankshaft (2000). The crankshaft (2000) comprises a front shaft (2100) and ...  
WO/2018/054284A1
A dual-drive compressor, comprising: a casing assembly (1000); a scroll assembly (3000), a crankshaft (2000) and a motor assembly (5000) which are located inside the casing assembly (1000); an electrical control assembly (6000) mounted o...  
WO/2018/054292A1
A dual-drive compressor, comprising: a casing assembly (1000); a scroll assembly (3000), a crankshaft (2000) and a motor assembly (5000) which are located inside the casing assembly (1000); an electrical control assembly (6000) mounted o...  
WO/2018/054862A1
The invention relates to a screw compressor (10) for a utility vehicle, having at least one housing (20), at least one housing cover (20b) and having at least one rotor housing (20a) and at least one seal (104), wherein, when assembled, ...  
WO/2018/051567A1
Provided are: a rotary compressor which is compact and has a large discharge capacity; and a refrigeration cycle device. This rotary compressor 2 has a maximum operating fluid discharge pressure of 3 MPa or higher. If the inner diameter ...  
WO/2018/050621A1
The invention refers to a rotary compressor arrangement (100) comprising a stationary member (40) centered at a shaft axis (X) and a rotary member (90) rotating around the stationary member (40); the stationary member (40) and the rotary...  
WO/2018/038339A1
The present invention relates to a cluster assembly and an electric compressor comprising the same and, more particularly, to a cluster assembly which has an improved insulation structure and is convenient to install, and an electric com...  
WO/2018/037906A1
Provided is a compressor in which an appropriate pulsation frequency component of a fluid can be sufficiently reduced by a muffler while the performance of the compressor is ensured. A compressor 1 is provided with a compression mechanis...  
WO/2018/024050A1
A bi-motor composite-rotor double-shaft transmission device comprises a pump cavity (1) and rotors (2). The rotors (2) are controlled by means of a frequency converter and an encoder to synchronously and reversely rotate and drive two ro...  
WO/2018/018516A1
A compressor as well as a cooling-heating refrigeration device and a cooling-only refrigeration device having same. The compressor comprises: a shell (1), a first cylinder (2) and a second cylinder (3). An exhaust pipe (10), a first suct...  
WO/2018/010536A1
A three-level roots water-ring intelligent frequency conversion control vacuum system comprises a first-level roots mechanical vacuum pump (1), a second-level roots mechanical vacuum pump (2), and a traction liquid ring pump (3). The fir...  
WO/2018/003431A1
A multi-stage compressor (2) comprises: a hermetic housing (3); and at least two or more stages of compression mechanisms accommodated within the hermetic housing, the at least two or more stages of compression mechanisms including a low...  
WO/2017/219669A1
A pump assembly and a compressor comprising same. The pump assembly comprises a first-stage cylinder (40) and a second-stage cylinder (6). The second-stage cylinder (6) and the first-stage cylinder (40) are stacked. A plurality of workin...  
WO/2017/213060A1
This hermetic compressor is provided with a compression mechanism section for compressing a gas medium. The compression mechanism section has: a first discharge valve mechanism for discharging to a first sound deadening chamber a gas med...  
WO/2017/198725A1
Hybrid multistage systems and methods for converting the potential energy of a pressurised gas, particularly air, into mechanical work of two rotating shafts (L.16 and H.10) when operating in expansion mode, and for producing compressed ...  

Matches 1 - 50 out of 7,451