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WO/2021/002629A1 |
A compressor comprises: a housing; and a motor comprising a stator which is forcibly inserted and fixed to the inner circumferential surface of the housing, and a rotor which rotates inside the stator. The stator comprises: a ring-shaped...
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WO/2020/262773A1 |
The present invention provides an electric compressor comprising: a main housing in which a motor, a rotating shaft rotated by the motor, and a compression means for suctioning and compressing a refrigerant by being rotated by the rotati...
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WO/2020/254043A1 |
The invention relates to a dry rough vacuum pump (1) comprising an injection device (9) designed to distribute a purging gas in the pumping stages (2a-2e), the injection device (9) comprising: - a first pressure sensor (12) arranged on a...
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WO/2020/253185A1 |
A compressor and an air conditioner. The compressor comprises a low-pressure stage compression portion. The low-pressure stage compression portion comprises a first compression structure and a second compression structure. The first comp...
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WO/2020/233108A1 |
Provided is a dual-side dual-groove parallel type oil-free vortex air compressor. The vortex air compressor mainly comprises two vortex fixed discs (2, 3) and a dual-side vortex tooth movable disc (1). One side end face of each of the vo...
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WO/2020/229163A1 |
The invention relates to a primary dry-type vacuum pump (1) comprising: - a stator (2) comprising at least one end part (14, 15) and at least two stator elements (10, 11, 12), and - two rotor shafts (7) for rotors (6) configured to rotat...
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WO/2020/211449A1 |
A dual-cylinder two-stage variable-capacity compressor, comprising: a first cylinder (15), an exhaust port of the first cylinder (15) being in communication with a first exhaust passage (21); and a second cylinder (13), the second cylind...
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WO/2020/211450A1 |
A variable capacity compressor, comprising two cylinders (13, 15), and an intermediate plate (14) for separating the two cylinders (13, 15). At least one communication channel (141) is formed in the intermediate plate (14). One end of th...
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WO/2020/201218A1 |
The present invention relates to a dry-type vacuum pump (1) comprising an ancillary stator (13) at least traversed by one of the shafts (4); - a suction pipe (14) provided with a controllable inlet valve (15), connecting an inlet (17) of...
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WO/2020/201366A1 |
The invention relates to a compressor or pump comprising a pump in a pump housing, a motor in a motor housing, which motor comprises a stator and a rotor and drives the pump by a common axle assembly, a pump end cover and a motor end cov...
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WO/2020/195528A1 |
The objective of the present invention is to enable heat recovery from a heat source to continue while cooling is being performed in such a way as to allow a state in which the temperature of compressed gas is less than a compressed gas ...
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WO/2020/184873A1 |
The objective of the present invention is to provide a fluid compressor comprising: a driving module (10) comprising a driving motor and a motor case in which the driving motor is embedded; and a compression module (20) comprising a roto...
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WO/2020/177357A1 |
A compressor (100) and an air conditioner. The compressor (100) comprises: a first cylinder assembly (30) comprising a first cylinder (32) and a first slide (36); and a volume-variable control assembly (40) comprising a voltage stabilizi...
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WO/2020/168726A1 |
Provided are a compressor and a heat exchange device, wherein, the compressor comprises: a rotor structure (10); a crankshaft (20), which passes through the rotor structure (10); an oil-retaining structure (30), which is connected to the...
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WO/2020/166430A1 |
An electric motor (2) and a compression mechanism driven by the electric motor (2) are accommodated inside a sealed container (1), and a stator (10) of the electric motor is configured by stacking a contact stator plate (22a) that comes ...
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WO/2020/165561A1 |
A compressor includes a main rotor (4), formed substantially as a cylinder and rotatable about an axis of the cylinder, the main rotor having helical flutes, and a casing. An inlet port admits gas into a first part of the flutes at a fir...
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WO/2020/164877A1 |
Primary dry-type vacuum pump (1) comprising a duct formed in the stator (2), an inlet of which is intended to be connected to at least one source of purge gas and of which at least one outlet communicates with the last pumping stage (3e)...
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WO/2020/164891A1 |
The scroll compressor (2) comprising a hermetic enclosure (3), a compression unit (11) configured to compress refrigerant, and an electric motor (16) configured to drive the compression unit (11) via a drive shaft (15), the hermetic encl...
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WO/2020/162134A1 |
This vibration isolating device for isolating vibrations by suppressing transmission of vibrations generated by a vibration generating source (10) to a vibration transmitted portion (20) is provided with at least one resilient member (30...
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WO/2020/161965A1 |
This rotary compressor has a case, a rotating shaft, a compression mechanism, a balancer, and a balancer cover. A through-hole is formed at a position in the balancer cover that is facing the rotating shaft in the axial direction. The ro...
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WO/2020/162046A1 |
Provided is a multi-stage screw compressor with which an intermediate shaft portion of a rotor can be made shorter. A two-stage screw compressor is provided with: a front-stage compressing mechanism 1 which has a front-stage male rotor...
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WO/2020/160770A1 |
A multistage pump body comprises a first pumping chamber (20) and a second pumping chamber (21). A connecting duct (26a) puts an outlet (27) of the first pumping chamber (20) into communication with an inlet (28) of the second pumping ch...
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WO/2020/156958A1 |
The present invention relates to a hermetic compressor (1) comprising; a housing (2), a rotor (3) and a stator (4) inside the housing (2) and wherein the stator (4) is placed around the rotor (3) so as to be concentric with the rotor (3)...
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WO/2020/157786A1 |
This compressor has three intake pipes. A first center of a first intake pipe, a second center of a second intake pipe, and a third center of a third intake pipe are positioned at the vertices of a triangle. A first distance between the ...
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WO/2020/159033A1 |
The present invention provides a fluid transfer apparatus comprising: a rotating shaft comprising a rotation unit extending along an axial direction and a first eccentric unit and a second eccentric unit disposed to be spaced apart from ...
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WO/2020/134020A1 |
A magnetic bearing compressor (100), an air conditioner, and a protective air gap value setting method. The magnetic bearing compressor (100) comprises: a rotor (102), a magnetic bearing (104), a sensor (106), and a control device (108)....
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WO/2020/132894A1 |
Disclosed are a compressor, a heat pump system, a water heater and a clothes drying machine. The compressor is internally provided with a first compression chamber (12) and a second compression chamber (13) for respectively compressing a...
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WO/2020/121443A1 |
In a rotary compressor according to an embodiment, the axial thickness of a partition plate is less than the axial thickness of a first flange part and the axial thickness of a second flange part. The area of a portion of an end face of ...
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WO/2020/114754A1 |
The invention relates to a pumping unit comprising: - a primary vacuum pump, - a Roots-type vacuum pump (3) comprising a pumping stage (7) having a stator (9) inside of which two Roots rotors (5) are configured to rotate synchronously in...
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WO/2020/077790A1 |
A variable capacity compressor operation mode determination method, apparatus, variable capacity compressor, and air conditioner. The variable capacity compressor operation mode determination method comprises: before switching the operat...
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WO/2020/078471A1 |
The present disclosure provides a pump-assisted degassing system(100), a vacuum degassing tower(200),and a water system having the same. The degassing system(100) comprises a vacuum pump(110), connected with a degassing tower(200) throug...
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WO/2020/078689A1 |
The invention relates to a method for controlling the temperature of a vacuum pump (2) of the dry type subjected to variable pumping loads, in which the temperature of the vacuum pump (2) is controlled by means of at least one cooling el...
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WO/2020/072425A1 |
A system 10 for pumping hydrocarbon bulk fluids includes an air-driven rotary or reciprocating positive displacement pump 16 in fluid communication with a tank 14 containing the hydrocarbon bulk fluid. The pump 16 contains an inlet 15 an...
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WO/2020/067194A1 |
In a refrigeration device using a plurality of multistage compressors, it has been necessary to keep refrigerating machine oil at an appropriate amount in each of the compressors. There has been a problem that when oil discharged from a ...
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WO/2020/067195A1 |
In a refrigeration device using a plurality of multistage compressors, it has been necessary to keep refrigerating machine oil at an appropriate amount in each of the compressors. A multistage compression system (20) has a low-stage comp...
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WO/2020/065504A1 |
An oil-injected multi-stage compressor system,that comprises at least a low-pressure stage compressor element (2) with an inlet (4a) and an outlet (5a) and a high-pressure stage compressor element (3) with an inlet (4b) and an outlet (5b...
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WO/2020/062608A1 |
A variable capacity compressor, a cylinder switching method and an air conditioner. The variable capacity compressor comprises: a cylinder (1); a rotor (2), provided in the cylinder (1), and forming an air chamber between the rotor and t...
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WO/2020/067197A1 |
In a refrigeration apparatus using a plurality of multistage compressors, there is a need to keep an appropriate amount of refrigerator oil in each of the compressors. A multistage compression system (20) has a low-stage compressor (21),...
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WO/2020/065506A1 |
Oil-injected multistage compressor device comprising at least one low-pressure compressor element (2) with a gas inlet (4a) for gas to be compressed and a gas outlet (5a) for low-pressure compressed gas and a high-pressure stage compress...
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WO/2020/067196A1 |
In a refrigeration apparatus using a plurality of multistage compressors, there is a need to keep an appropriate amount of refrigerator oil in each of the compressors. A multistage compression system (20) has a low-stage compressor (21),...
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WO/2020/065505A1 |
An oil-injected multistage compressor device that comprises at least one low-pressure stage compressor element (2) with an inlet (4a) and an outlet (5a) and a high-pressure stage compressor element (3) with an inlet (4b) and an outlet (5...
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WO/2020/059096A1 |
This rotary compressor has a compression mechanism part. A rotary shaft of the compression mechanism part has: a plurality of crank parts positioned between a first journal part and a second journal part; a middle journal part which is p...
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WO/2020/059608A1 |
The purpose of the invention is to provide a multiple-stage compressor in which numerous vales, openings, and pipes unique to two-stage compression are consolidated, and which can be maintained and made compact. To achieve this purpose, ...
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WO/2020/054071A1 |
This rotary compressor comprises a compression mechanism part accommodated in an airtight container. The compression mechanism part includes at least three cylinder bodies interposed between a first bearing and a second bearing that supp...
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WO/2020/039692A1 |
This refrigeration cycle device (1) is provided with a refrigerant and a refrigeration cycle circuit. The refrigeration cycle circuit has a compressor (10) and causes the refrigerant to circulate. The refrigerant is an HFO-based refriger...
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WO/2020/031801A1 |
A high-pressure-chamber-type sealed electric compressor that comprises, in a sealed container: a compression mechanism part that compresses a coolant; and an electric motor that drives the compression mechanism part. The electric motor c...
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WO/2020/019608A1 |
A compressor (1) and a refrigerator. The compressor (1) comprises: a sealed container (11); a motor portion and a compressing mechanism portion which are disposed in the sealed container (11); and a by-pass valve (6). The compressor (1) ...
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WO/2020/020902A1 |
The invention relates to a fluid delivery device (1) having a primary pump (2) and a main pump (3) fluidically connected to the primary pump (2), wherein the primary pump (2) can be driven by a primary pump input shaft (8), and the main ...
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WO/2020/011126A1 |
A screw compressor system (100) and a heat exchange system (700) comprising the screw compressor system (100). The screw compressor system (100) comprises: a speed change motor (1) , a screw compressor (2), and a controller (101); wherei...
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WO/2020/006986A1 |
A compressor and a refrigeration cycle apparatus, relating to the technical field of refrigeration. The mainly adopted solution is that: the compressor comprises a housing, as well as a driving assembly (2), a compression assembly and an...
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