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WO/2021/257421A1 |
A vacuum pump includes a housing defining a base, an internal cavity, and a partition wall defining a first chamber and a second chamber. The second chamber is sealed relative to the first chamber to form a compression chamber. A motor a...
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WO/2021/240620A1 |
A vacuum exhaust device (1) is provided with: a joint tube (5) that is provided with a flange and that connects an exhaust port (31) of a mechanical booster pump (3) and a suction port (41) of a dry vacuum pump (4); and a silencer (6) co...
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WO/2021/219307A1 |
A primary vacuum pump (1) comprising a suction orifice (4) and a discharge orifice (5), the vacuum pump (1) being configured to be able to discharge the pumped gases at atmospheric pressure, comprising: - a stator (2) comprising at least...
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WO/2021/204112A1 |
Disclosed is a screw compressor (100), comprising a screw compressor housing (101), a discharge cavity (113), at least one silencing channel, and at least one adjustment piston, wherein the discharge cavity (113) is defined by at least o...
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WO/2021/198732A1 |
The present invention discloses a scroll compressor 100 which includes a sealed container 10, a motor element 20 housed in the sealed container 10, a scroll compression element 30 driven by a rotating shaft portion 16 of the motor elemen...
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WO/2021/201223A1 |
This rotary compressor is provided with: a shaft extending along the axial line; a disk-shaped rotor that is centered on the axial line and that is fixed to the shaft; a pair of stators that respectively face the rotor from both sides of...
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WO/2021/200858A1 |
A first compression chamber (24) which compresses a fluid at a suction intake pressure, introduced into a casing (10), to an intermediate pressure higher than the suction intake pressure, and a second compression chamber (25) which compr...
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WO/2021/193275A1 |
[Problem] To provide a horizontal rotary compressor that can suppress separation of a vane from a piston member and can suppress agitation of lubricating oil caused by the reciprocating motion of the vane. [Solution] A horizontal rotary ...
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WO/2021/179543A1 |
A compressor system (10) and an oil management method therefor. The compressor system (10) comprises a first compressor (101), a second compressor (102), a first oil pipe (111) and a first control valve (131). The first oil pipe (111) is...
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WO/2021/176004A1 |
Method for controlling a plurality of compressors coupled to a compressed-air installation comprising: providing a main controller for controlling the compressors, a pressure sensor, and a flow sensor, both sensors coupled to the compres...
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WO/2021/175680A1 |
Dry vacuum pump (1) comprising: - a stator (2) comprising at least one first and at least one second complementary half-shells (7, 8), each half-shell (7, 8) comprising at least one half-partition (13e) joined together with a half-partit...
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WO/2021/171340A1 |
The rotary compressor according to an embodiment has a shaft, a plurality of compression mechanisms, a plurality of eccentric parts, a first balancer, and a second balancer. The plurality of eccentric parts have a first eccentric part, a...
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WO/2021/171677A1 |
In the present invention, a lower-end plate cover (170S) is provided with a bulging section (171S), a portion of which faces a lower discharge hole. In the circumferential direction of a rotating shaft (15), a plurality of bolt holes (13...
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WO/2021/165160A1 |
Dry vacuum pump (1) comprising an elastic outer seal (16) and at least one elastic inner seal (17) respectively comprising a first and a second end annular parts (161, 171, 162, 172) parallel to one another and inserted between a respect...
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WO/2021/164240A1 |
A counterweight assembly (180a, 180b) and a compressor (10) having same. The counterweight assembly (180a, 180b) comprises: a counterweight body (184) having a cylindrical outer peripheral surface and a hollow part therein.
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WO/2021/160677A1 |
The invention relates to a screw compressor for compressing a medium, having a drive unit (01), which has a drive (06, 07), and having a compressor unit (03), which has two intermeshing rotors (21, 22) with mutually complementary screw p...
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WO/2021/161009A1 |
A multi-stage vacuum pump comprising a stator defining multiple pumping chambers is discussed. The stator comprises a plurality of transfer channels for providing a fluid passage from an outlet port of one of the plurality of pumping cha...
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WO/2021/158662A1 |
A multistage compressor system with intercooler can include a sealed housing with first and second compressor stages, where the first compressor stage is for receiving refrigerant from outside of the sealed housing, and the second compre...
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WO/2021/152294A1 |
A set of seals for sealing between the stator components of a pump, the stator components comprising two half shells defining at least one pumping chamber and two head plates to be mounted at either end of the two half shells. The set of...
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WO/2021/153991A1 |
The present invention relates to an electric compressor, a jig for assembling an inverter, and an inverter manufacturing method. An inverter of the electric compressor comprises a frame coupled to a substrate, the frame comprising: a bas...
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WO/2021/153992A1 |
The present invention relates to an electric compressor, an inverter manufacturing apparatus and an inverter manufacturing method. An inverter of an electric compressor comprises: a substrate having a plurality of elements mounted thereo...
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WO/2021/148525A1 |
Dry vacuum pump (1) in which the at least two pumping stages (1a-1f) each have an inlet (7) and an outlet (8) emerging from a respective half-shell (9, 10), the stator (2) also having a stator casing (15) surrounding the joined half-shel...
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WO/2021/130117A1 |
A multi-stage vacuum pump is disclosed. The multistage vacuum pump has a plurality of stages, comprising: at least one higher vacuum stage which is operable to receive fluid from a high vacuum device to be compressed; at least one lower ...
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WO/2021/130031A1 |
A multiple stage pump, a gasket and a method of servicing the pump are disclosed. The pump comprises: a stator, having a stator bore for receiving a rotor, the stator comprising multiple inter-stage walls for forming multiple pumping sta...
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WO/2021/130118A1 |
A multiple stage roots-type vacuum pump and method of manufacturing a pump are disclosed. The pump comprises: a rotor rotatably mounted within a stator; the stator being formed of a material that is softer than a material of the rotor. A...
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WO/2021/122359A1 |
Vacuum pump (1) comprising at least one injection channel (10) emerging through at least one injection orifice (15) configured to inject a purging gas onto a bearing face of the seat (5) in the open position of the check valve (4) and/or...
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WO/2021/120984A1 |
A rotary double-cylinder air compression mechanism and a double-cylinder single-air suction compressor. The rotary double-cylinder air compression mechanism comprises a first cylinder (100), a middle partition (200), and a second cylinde...
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WO/2021/118135A1 |
The invention relates to a device (3) for driving a compressor of a vapourous fluid. The device (3) exhibits a housing (2) with a cooling surface (2-1) and a power supply arrangement (5) with at least one switching element (11), at least...
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WO/2021/110257A1 |
The present invention relates to a redundant vacuum pumping system (300) and a pumping method using this system, comprising a primary roots pump (302), a first pumping sub-system (310) and a second pumping sub-system (320), wherein the f...
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WO/2021/110447A1 |
Rotor (7) for a multistage dry vacuum pump (1), the vacuum pump (1) including two shafts (5, 6) configured to turn in a synchronized manner in opposite directions in at least two pumping stages (1a-1f) to drive a gas to be pumped between...
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WO/2021/111708A1 |
This electric motor is provided with a rotor and a stator for rotating the rotor, wherein the stator is configured by magnetically connecting a plurality of divided stator blocks 21 and further the divided stator blocks have a configurat...
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WO/2021/103525A1 |
A compressor (100) and a refrigeration device. The compressor (100) comprises: a crankshaft (102) and a connecting structure (104) provided on the crankshaft (102); the connecting structure (104) and/or the crankshaft (102) are/is provid...
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WO/2021/103552A1 |
A compressor and a refrigeration device. The compressor comprises a housing (140). The housing (140) is provided with a first air outlet port (142) and a second air outlet port (144). A first cylinder (100) has an accommodating cavity, a...
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WO/2021/082207A1 |
Provided are a compressor (1), a compressor assembly, a heat exchange system and an electrical apparatus. The compressor comprises a housing (11), wherein a first exhaust structure (112) and a second exhaust structure (115) are arranged ...
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WO/2021/077859A1 |
A magnetic suspension bearing control method, a magnetic suspension bearing control apparatus, a magnetic suspension system, and a computer readable storage medium. The magnetic suspension bearing control method comprises: determining wh...
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WO/2021/073852A1 |
A dry vacuum pump has a stator (2) and two rotors (5) that are accommodated in at least one compression chamber (3) of the stator (2), the rotors (5) being configured to rotate synchronously in opposite directions so as to drive a gas to...
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WO/2021/065676A1 |
This rotating electric machine is provided with a plurality of cores (10, 20) and a plurality of supporting members (2a, 4). At least one of the cores (10, 20) is supported by either of the supporting members (2a, 4) via a resin member (...
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WO/2021/056796A1 |
A compressor and a cooling device. The compressor comprises: a housing (160), a stator (111) and a rotor (112), a first cylinder (121), a first piston (122) provided in the first cylinder (121), a second cylinder (124), and a second pist...
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WO/2021/053965A1 |
A heat exchanger for preheating causes cooling water on an outlet side of a heat exchanger for auxiliary cooling and feed-water having passed through a bypass path for preheating to exchange heat with each other.
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WO/2021/054634A1 |
The present invention relates to a compressor module (33) for a refrigerant circuit of a motor vehicle air-conditioning system, exhibiting a modular multi-part housing with a low-pressure refrigerant inlet, a high-pressure refrigerant ou...
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WO/2021/047108A1 |
A two-stage compressor, comprising a low pressure stage (10) and a high pressure stage (20) that is connected in series with the low pressure stage (10). The two-stage compressor also comprises an internal volume ratio adjusting mechanis...
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WO/2021/047247A1 |
A two-stage compressor and a control method of the two-stage compressor, and an air conditioning unit. The two-stage compressor comprises a low-pressure stage (10), a high-pressure stage (20) connected to the low-pressure stage (10) in s...
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WO/2021/040363A1 |
The present invention relates to a compressor, a multi-stage compression module, and a compression system, and provides a compression system comprising: a housing (12); a rotor (11) having a plurality of slots (112); a motor (20) for dri...
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WO/2021/033283A1 |
The multi-stage rotary compressor according to an embodiment comprises a rotary shaft inside a case, a drive element provided on one axial end side of the rotary shaft, and a compression element provided on the other axial end side of th...
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WO/2021/022767A1 |
A compressor and an air conditioning system. The compressor comprises a low-pressure stage body (1) and a high-pressure stage body (2). The low-pressure stage body (1) is provided with a low-pressure stage suction port (11) and low-press...
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WO/2021/020017A1 |
A multi-stage rotary compressor according to an embodiment of the present invention includes a rotating shaft, a drive element provided on one end side, in the axial direction, of the rotating shaft, and a compression element provided on...
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WO/2021/020376A1 |
A compressor (10) comprises a casing (20) that stores lubricating oil (25) in the bottom, a compression mechanism (30) that is provided inside the casing (20) and that compresses a drawn-in fluid, an electric motor (40) that is provided ...
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WO/2021/017677A1 |
A compressor and an air conditioning system, the compressor comprising a two-stage compression structure (1) and an intermediate air supplement structure (2), wherein a communication pipeline is provided between an exhaust port of one st...
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WO/2021/015546A1 |
The present invention relates to an electric compressor comprising: a housing; a compression unit provided inside the housing; a motor unit connected to the compression unit to drive the compression unit; an inverter unit coupled to one ...
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WO/2021/008834A1 |
Pumping unit (1) comprising a primary vacuum pump (2) and a Roots vacuum pump (3) connected in series and upstream of the primary vacuum pump (2) in the direction of flow (g) of the pumped gases, characterised in that: - the Roots vacuum...
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