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Matches 1 - 50 out of 7,491

Document Document Title
WO/2018/229459A1
A twin shaft pump comprising: two cooperating rotors configured to rotate in opposite directions about parallel axes of rotation; a stator comprising a stator bore in which the rotors are mounted to rotate. The stator bore comprises a ce...  
WO/2018/228784A1
The invention relates to a multi-stage rotary piston pump comprising two shafts in a housing, which support multiple rotary pistons. Corresponding rotary pistons form a respective rotary piston pair, wherein multiple rotary piston pairs ...  
WO/2018/224409A1
The invention relates to a dry-compressing vacuum pump, in particular a screw pump, a multi-stage Roots pump, a Roots pump, or a claw pump, having rotor elements (14) arranged in a suction chamber (12). The two rotor elements are each bo...  
WO/2018/223667A1
Disclosed is a multi-stage compressor, comprising a gas supplement structure, a low-pressure stage chamber and a high-pressure stage chamber. The gas supplement structure comprises a gas supplement inlet (1) and a perforating member (2),...  
WO/2018/223665A1
A housing structure, comprising: a housing (110), wherein the bottom of the housing (110) is provided with a plurality of legs (111); a support component (120), disposed in the housing (110) and capable of supporting a motor and a rotor ...  
WO/2018/224253A1
The invention relates to a method for monitoring an operating state of a pumping device (5) connected to a process chamber (2) with a view to determining a faulty operating state of the pumping device (5), the pumping device (5) comprisi...  
WO/2018/208270A3
The present invention is a tandem pump (1) having a primary pump (10) having a primary drive gear (11) and a primary conjugate gear (12) connected to an input shaft (41) and a secondary pump (20) provided in the vicinity of the primary p...  
WO/2018/204218A1
A device under test cooling system has a refrigerant line and a fluid line extending through a plurality of successively arranged heat exchangers. A digital scroll compressor has an intake for providing the refrigerant mixture to the com...  
WO/2018/196489A1
Provided is a scroll compressor for a vehicle, the scroll compressor comprising: a housing (3) provided with a first opening so as to form an accommodation space; a compression mechanism; an electric motor mechanism comprising an electri...  
WO/2018/197834A1
The invention relates to a vacuum pumping system (10) which comprises a plurality of vacuum pumping arrangements (12, 14, 16) for evacuating a flammable gas stream and exhausting the gas stream through an exhaust outlet (78). A housing h...  
WO/2018/196485A1
Provided is an upright compressor, comprising a housing (3), which housing (3) is provided with a first opening; a compression mechanism comprising a static scroll plate (2), comprising a low-pressure side (202) provided with scroll teet...  
WO/2018/199061A1
Provided is an internal medium pressure two-stage compression compressor which includes, as a compressing mechanism portion 30, a first compressing mechanism portion 30A which performs low-stage compression as a first stage, and a second...  
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...  

Matches 1 - 50 out of 7,491