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Matches 151 - 200 out of 38,056

Document Document Title
WO/2020/189602A1
[Problem] To provide a scroll compressor with which it is possible to eliminate the problem of excessive back pressure in a wide suction pressure range. [Solution] The scroll compressor is provided with: a back pressure chamber 39 formed...  
WO/2020/188738A1
The outer curve of one spiral is defined using a basic curve and a group of circles having a radius of eλ, and the inner curve thereof is defined using an inversion curve and a group of circles having a radius of eλ. The inner curve of...  
WO/2020/189601A1
[Problem] To provide a scroll compressor in which the development of localized contact caused by deformation of a fixed scroll or a movable scroll due to the influence of compressive reaction force or thermal expansion is effectively sup...  
WO/2020/182317A1
A dry pump for gas comprises a first rotor (1) comprising a first portion with lobes (1A) and a first screw (1B), and also a second rotor (2) comprising a second portion with lobes (2A) and a second screw (2B). A casing delimits an inter...  
WO/2020/185860A1
A compressor includes a shell, first and second scroll members, a fitting assembly and a valve assembly. The first scroll member includes a first end plate having a first spiral wrap extending therefrom. The second scroll member includes...  
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...  
WO/2020/183627A1
This scroll machining device is a device for machining a scroll base material using a machining tool, by moving the machining tool and the scroll base material, which is fixed onto a table, relative to one another. The scroll machining d...  
WO/2020/183546A1
A helical gear pump comprises: a casing that is constituted by a body (11), a front cover (12), and a rear cover (13); a pair of helical gears (23) and (24) that is accommodated inside a hole formed in the body (11) and meshes with each ...  
WO/2020/179051A1
This scroll compressor is provided with a fixed scroll and an orbiting scroll having spiral teeth that mesh with each other, and which performs compression by causing the orbiting scroll to orbit around the fixed scroll, wherein the spir...  
WO/2020/179652A1
A compressor comprises a rotary shaft (12), a rotary body (160) that rotates with the rotation of the rotary shaft, a fixed body (90, 110) that does not rotate with the rotation of the rotary shaft, and a vane (131) inserted in a vane gr...  
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...  
WO/2020/178344A1
The invention relates to an oil-lubricated rotary vane vacuum pump (1) comprising a rotary vane unit (2), having a rotary vane chamber (10) and a rotary vane rotor (11), and comprising an oil separator device (3), wherein gas and oil are...  
WO/2020/179043A1
A hermetic compressor comprising, on the interior of a hermetic container, a compression mechanism and an electric motor which drives the compression mechanism, with the compression mechanism being driven by the electric motor which is l...  
WO/2020/178895A1
This screw compressor comprises an internal volume ratio variable mechanism including a variable Vi valve that enables a Vi value, which is an internal volume ratio, to be varied. In the screw compressor, the position of the variable Vi ...  
WO/2020/177817A1
A method for operating a scroll compressor (110) for an air conditioner (100), said scroll compressor (110) having a fixed spiral (101) and a spiral (102) that can move relative to the other spiral and that is disposed in a housing chamb...  
WO/2020/173474A1
A processing method of a piston (220), a processing method of a rotary compressor, and a rotary compressor. The processing method of the piston (220) comprises performing quenching, a cryogenic treatment, and a tempering treatment on the...  
WO/2020/175415A1
A compressor is provided with: a rotation shaft; a rotation body that is configured to rotate with rotation of the rotation shaft; a fixed body that is configured so as not to rotate with the rotation of the rotation shaft; a cylinder pa...  
WO/2020/174885A1
A first oil draining groove (81) and a second oil draining groove (82) are formed on opposite surfaces of a fixed scroll (60). A portion of the first oil draining groove (81) and the second oil draining groove (82) opens to the outside i...  
WO/2019/147202A3
The present invention is related to a compressor (17) that has higher efficiency, lower energy consumption, and longer operating life and provides high performance with low noise level in comparison to the compressors currently used in h...  
WO/2020/174534A1
This scroll compressor is provided with: a shell having a suction pipe for causing a fluid to flow to the inside; a compression mechanism part that has an oscillating scroll forming a compression chamber together with a fixed scroll and ...  
WO/2020/170361A1
A rolling piston type compressor provided with a compression mechanism unit inside a sealed container, wherein the compression mechanism unit has a cylinder, an upper bearing, and a lower bearing, and is provided with a suction connectin...  
WO/2020/170886A1
This hermetically sealed compressor is provided with a hermetically sealed container (1), an electric motor unit, a compression mechanism unit, a suction pipe (6) for sucking in a refrigerant, and a discharge pipe for discharging to the ...  
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...  
WO/2020/169978A1
A single screw compressor comprises a main rotor and at least one gate rotor, a casing for the main rotor having a discharge port at a discharge end of the casing, and a slide slidable within a bore in the casing adjacent the main rotor....  
WO/2020/164943A1
The invention relates to a rotary piston pump (1), in particular a claw pump, comprising a housing (2) which, when placed in a customary manner, has a housing inlet (11) in a housing upper side (3). In order to further improve a rotary p...  
WO/2020/166431A1
According to the present invention, a muffler space (14), to which a coolant is discharged, is configured such that the width (D) of a portion corresponding to a discharge port (12) is smaller than the horizontal width (L) of a coolant o...  
WO/2020/165689A1
Screw rotor, characterized in that the screw rotor (1) is made out of polymer, wherein the screw rotor (1) consists of a shaft (2) with a rotor body (3) on it, wherein the polymer of the shaft (2) is reinforced with fibers (4), wherein t...  
WO/2020/165962A1
A compressor (3) is provided with a motor (6), a compressor mechanism part (31) driven by the motor, and a rotation shaft (10) that couples the motor and the compressor mechanism part. At least a portion of the rotation shaft is formed f...  
WO/2020/166285A1
This compressor is a multi-stage compression type compressor provided with a hermetically sealed container, and a rotary compressing mechanism which is accommodated inside the hermetically sealed container and which compresses a refriger...  
WO/2020/165592A1
A pump and method for pumping a gas are disclosed. The pump comprises: a pump housing element and a further element; one of the pump housing and the further element comprising a helical protrusion extending towards the other element, the...  
WO/2020/166290A1
A compressor that comprises a rotary shaft (12), a rotary body (60) that has a rotary body surface (71) and a vane groove (130), a fixed body (90) that has a fixed body surface (100), a vane (131) that is inserted into the vane groove, a...  
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...  
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)...  
WO/2020/165985A1
A scroll compressor is provided with: a cylindrical shell (40); a fixed scroll (11) that is fixed to an inner wall of the shell; a swinging scroll (12) that is arranged opposite to the fixed scroll; a frame (50) that is fixed to the inne...  
WO/2020/165967A1
A scroll compressor is provided with a fixed scroll in which a fixed spiral body is projectingly provided on a fixed table plate and a swinging scroll in which a swinging spiral body is projectingly provided on a swinging table plate, an...  
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...  
WO/2020/160999A1
The invention relates to a machine for expanding or compressing substantially gaseous media, comprising: a machine housing (10); at least one screw rotor (36, 38), which is arranged in the machine housing in a screw rotor bore (52, 54), ...  
WO/2020/162394A1
This scroll compressor is provided with: a fixed scroll; a turning scroll; a compression chamber; and a back pressure chamber. The compression chamber has an outer compression chamber positioned outside a second spiral wrap of the turnin...  
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...  
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...  
WO/2020/155923A1
A sliding vane component, a rotor type compression component comprising the sliding vane component, and a compressor. The sliding vane component comprises a sliding vane (1) and a connection member (10) for connecting the sliding vane (1...  
WO/2020/157841A1
This two-way-rotating scroll compressor is provided with: a double-toothed first drive-side scroll member (71); a double-toothed first driven-side scroll member (91) which meshes with the first drive-side scroll member (71); a second dri...  
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)...  
WO/2020/155727A1
Provided is a scroll compressor, comprising: a scroll assembly comprising a movable scroll (30, 130, 230), and a fixed scroll (20, 120, 220), with a longitudinal channel (126, H1, H2) which is in communication with at least one of multip...  
WO/2020/157902A1
The purpose of the invention is to obtain a sliding bearing structure in which oil film pressure is effectively increased between a rotating shaft and a sliding bearing of a scroll compressor, and galling of the rotating shaft and the sl...  
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 ...  
WO/2020/157568A1
Non-lubricated system (100; 200; 300) for pumping a gas, comprising a stationary stator with a housing (120; 220; 320) comprising a rotor cavity (210; 310) and at least one rotatable rotor element (101, 102) incorporated within the rotor...  
WO/2020/157587A1
A method for controlling a compressor towards an unloaded state, in which the compressor comprises a compressor element 2) with an inlet (5), in which in the unloaded state, a residual flow (QD) is suctioned via the inlet (5) towards and...  
WO/2020/159394A1
The invention relates to rotary-piston machines, and more particularly to systems for sealing the working chambers of such machines, and can be used in gas (air) and refrigerating compressors, heat and vacuum pumps, and internal combusti...  
WO/2020/157792A1
A scroll compressor (100) comprises: a shell (1) that constitutes an outer shell and forms an oil sump (131) that stores lubricating oil inside; a fixed scroll (41) housed in the shell; an orbiting scroll (42) housed in the shell and for...  

Matches 151 - 200 out of 38,056