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Matches 1 - 50 out of 3,221

Document Document Title
WO/2019/201884A1
The invention relates to a pump (1) having a product chamber (3) for a product to be pumped and at least two sealing chambers (9, 10), wherein - a first sealing chamber (9) is in the form of a barrier chamber filled with a barrier liquid...  
WO/2019/192913A1
The invention relates to a dry-type vacuum pump (1) comprising: at least one oil sump (2); at least one pumping stage (3e); two rotating shafts (4) each bearing at least one rotor (5) extending inside the at least one pumping stage (3e),...  
WO/2019/170386A1
The invention relates to a dry-type vacuum pump (1) comprising: – at least one oil pan (2), – at least one pumping stage (3a – 3e), – two rotary shafts (4) respectively bearing at least one rotor (5) extending in the at least one...  
WO/2019/168279A1
An electric compressor according to the present invention comprises: a casing for accommodating a main frame and a rotary shaft; a driving unit for rotating the rotary shaft; and a compression unit having a first scroll fixed to the casi...  
WO/2019/149030A1
Provided is a high-pressure pneumatic machine, comprising a cylinder (4), a rotor (5) and a high-pressure air storage tank, wherein the rotor (5) is rotatably mounted inside the cylinder (4) by means of a support shaft and is arranged co...  
WO/2019/132666A1
A sealing arrangement for a sliding vane machine for compressing or expanding a fluid, for sealing between a rotating plane surface on a rotor and a machine housing to prevent flow of process fluid between an internal volume to an extern...  
WO/2019/112159A1
The present invention relates to an electric compressor capable of fixing a shaft seal without a fixing retainer of the shaft seal, the electric compressor comprising: a shaft (300) rotatably coupled inside a main housing (100a); and a s...  
WO/2019/110611A1
The disclosure relates to rotating devices having at least one rotor (3) and a rotor bearing part, at least for receiving, conveying, compressing, expanding, expanding, igniting and/or combusting a working fluid or at least for pumping, ...  
WO/2019/092024A1
Scroll compressor having a fixed disc (1) and a fixed scroll (2) on a fixed base surface (3) of the fixed disc (1), which fixed scroll (2) configures a spiral compressor channel (6) which extends from an outer end (5) of the fixed scroll...  
WO/2019/065404A1
A screw compressor 1 is provided with: a rotor casing 10 that defines a rotor chamber S1 accommodating a screw rotor body 16a; a shaft part 16c that extends from the screw rotor body 16a in such a manner as to penetrate through the rotor...  
WO/2019/050679A1
A compressor system (10) includes a gas compressor (18) with dry gas seals (66, 68) about a driveshaft (64). The compressor system (10) also includes a fugitive gas system (30) having a gas conduit (36) in fluid communication with a coll...  
WO/2019/045454A1
Provided is a scroll compressor in which an installation position of a check valve is optimized, such that a back flow of a refrigerant is prevented at the time of stopping of the scroll compressor, flow noise can be reduced, the refrige...  
WO/2019/027844A1
A supercharger having twisted meshing rotors sealingly contained within a housing having an inlet port to admit air into the meshing rotors and an outlet port to expel air from the meshing rotors, the rotors having mesh points where the ...  
WO/2018/215260A1
Disclosed is a vane pump, comprising a stator having an accommodation groove, a rotor provided in the accommodation groove, a plurality of vane grooves radially formed in the rotor, and a plurality of vanes able to reciprocally slide in ...  
WO/2018/190544A1
A scroll compressor includes: a frame configured to support a second scroll by being coupled to a first scroll; a sealing member insertion groove formed in a ring shape, on at least one of one side surface of the second scroll and one si...  
WO/2018/190520A1
Provided is a scroll compressor including: a casing: a drive motor which is held in place within the casing and has an internal flow passage and an external flow passage to pass through; a rotation shaft which is combined with the drive ...  
WO/2018/185730A1
An epitrochoidal vacuum pump includes a housing having a chamber, a rotor rotatably received within the internal space of the chamber, and a drive shaft configured to rotate the rotor eccentrically about an axis within the chamber in an ...  
WO/2018/166875A1
A lubricant-sealed vacuum pump, such as a rotary vane pump, comprises a rotor element (16) arranged in a suction chamber (10). The rotor element (16) is carried by a rotor shaft (26). The shaft (26) is surrounded by a main seal (32) arra...  
WO/2018/117276A8
This screw compressor is equipped with: a screw rotor 2 that is formed from a rotor part 21 and a shaft part 23; a casing 4 that is provided with a shaft hole 53a through which the shaft part 23 is inserted, and that houses the screw rot...  
WO/2018/142095A1
A pump cooling system may include a cooling body (24) to be fitted to a pump housing (14) to receive heat from the pump housing via a heat conducting path (44) between the cooling body and pump housing. The cooling body (24) may have a p...  
WO/2018/138487A1
A pump assembly is disclosed comprising: two half shell stators defining one or more pumping chambers; end pieces mounted at either end of said two half shell stators; longitudinal seals for sealing between longitudinal contact faces of ...  
WO/2018/139500A1
This scroll compressor is provided with a scroll member which has a compression chamber which compresses a work fluid, a housing which houses the scroll member, a second drive-side shaft (72c) which discharges compressed work fluid from ...  
WO/2018/139543A1
This scroll compressor is provided with a scroll member which has a compression chamber which compresses a work fluid, a housing which houses the scroll member, a second drive-side shaft (72c) which discharges compressed work fluid from ...  
WO/2018/138489A1
A vacuum pump and method of manufacture thereof, the vacuum pump comprising: two half shell stators components mounted together at longitudinal contact faces and defining one or more pumping chambers; longitudinal seals for sealing betwe...  
WO/2018/139161A1
Provided is a single-screw compressor wherein a gate rotor assembly engaging with a screw rotor is provided with a first gate rotor (60) and a second gate rotor (70). In the first gate rotor (60), a front seal line (67) sliding on the fr...  
WO/2018/139307A1
This scroll compressor can adjust intermediate pressure to a prescribed pressure during compression of a compression chamber 15 and reduce the compression ratio under low compression ratio conditions in which an orbiting scroll 12 separa...  
WO/2018/139501A1
This scroll compressor is provided with a scroll member which has a compression chamber which compresses a work fluid, a housing which houses the scroll member, a second drive-side shaft (72c) which discharges compressed work fluid from ...  
WO/2018/134200A1
The invention relates to a spindle compressor designed as a twin-shaft rotary displacement machine for delivering and compressing flow media, particularly steam. It comprises a pair of spindle rotors in a compressor housing (1) comprisin...  
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/2018/117682A1
According to the present invention, a scroll compressor comprises: a housing; a driving motor accommodated in the housing; an orbiting scroll rotated by the driving motor; a fixed scroll provided inside the housing, and forming a compres...  
WO/2018/117276A1
This screw compressor is equipped with: a screw rotor 2 that is formed from a rotor part 21 and a shaft part 23; a casing 4 that is provided with a shaft hole 53a through which the shaft part 23 is inserted, and that houses the screw rot...  
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/2018/086680A1
The invention relates to dry-compressing 2-shaft rotational displacement machines for conveying and compressing gases for use in a vacuum and overpressure. According to the invention, in order to improve effectiveness and reliability in ...  
WO/2018/084345A1
The present invention relates to an electric compressor having an electrical connection means. According to one aspect of the present invention, provided is an electric compressor comprising: a compression mechanism unit for compressing ...  
WO/2018/068806A1
Rotary vacuum pump, comprising a housing defining a pump chamber therein, and a rotor extending through a first axial end panel into the pump chamber and carrying at least one vane for rotary movement of the vane within the pump chamber,...  
WO/2018/054855A1
The invention relates to a system (1) for a utility vehicle comprising a screw compressor (10) and an electric motor (5), said electric motor (5) driving the screw compressor (10). The electric motor (5) is connected to the screw compres...  
WO/2018/056152A1
Provided is a housing seal structure that improves the seal integrity between housings using an O-ring. The housing seal structure uses an O-ring 62 to form a seal between joining parts 57, 59 of a fixed scroll 24 and a front housing 4 j...  
WO/2018/056634A1
The present invention relates to a mutual rotation type scroll compressor in which the position of a bearing supporting scrolls is changed by a torque repulsive force applied to the bearing by the compression-repulsion of a compressed fl...  
WO/2018/054865A1
The present invention relates to a screw-type compressor (10) for a utility vehicle, having at least one housing (20) with at least one housing cover (20b) and with at least one rotor housing (20a), having at least one baffle plate (100)...  
WO/2018/048086A1
The present invention relates to a compressor comprising: a motor for generating driving force; a compression device driven by the motor and compressing a refrigerant; an inverter for controlling the motor; a connector for electrically c...  
WO/2018/038182A1
Provided is a scroll fluid machine which is capable of avoiding malfunctions which occur in connection portions between flat portions and inclined portions of an end plate and a wall. The present invention is provided with: a wall inclin...  
WO/2018/034255A1
Provided is a scroll fluid machine that has an inclined section in a wall body and an end plate and that is capable of performing effectively. A scroll compressor (1) is provided with a fixed scroll member (3) and a rotating scroll (5). ...  
WO/2018/030245A1
The objective of the present invention is to improve the lubricating performance of a rolling bearing and a shaft sealing member by making it possible to form a refrigerant guide channel on an inner circumferential surface of a bearing p...  
WO/2018/016422A1
Provided is a housing seal structure that better prevents housing corrosion of a seal structure using an O ring between housings. In the housing seal structure, an O ring 62 seals between a joint surface 57 of a fixed scroll 24 and a joi...  
WO/2017/220961A1
The present application provides a scroll vacuum pump comprising: an orbiting scroll having an orbiting scroll wall extending axially from an orbiting scroll base towards a fixed scroll, the fixed scroll having a fixed scroll wall extend...  
WO/2017/210594A1
A scroll compressor lubrication system and a scroll compressor are disclosed. The scroll compressor includes a capacity modulator, a lubricant opening, and a gas diverting passage. The capacity modulator is in fluid communication with co...  
WO/2017/201895A1
A rotating system, and a fluid motor, a compressor, a pump and an engine using same. The rotating system uses a primary rotating device (610), at least one left rotating device (620) and at least one right rotating device (630). Eccentri...  
WO/2017/202385A1
A vortex compressor, comprising a fixed vortex (150) and an orbiting vortex (160); the fixed vortex (150) comprises a fixed vortex end plate (154) and a spiral-shaped fixed scroll (156) extending from the fixed vortex end plate (154); th...  
WO/2017/202346A1
A positioning and seal assembly, comprises N positioning roller-balls (927) and a seal holder (926) in a two-layer ring-shaped structure, the seal holder (926) comprising an inner ring portion (926a) and an outer ring portion (926b); the...  
WO/2017/199001A1
Liquid Ring pumps are inherently inefficient due to energy losses caused by friction, the present invention overcomes this by providing a coating on certain surfaces of the pump to limit the friction.  

Matches 1 - 50 out of 3,221