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Patent Searching and Data


Matches 351 - 400 out of 37,959

Document Document Title
WO/2019/188323A1
The effects of pressure and heat are reduced while the mass of a screw rotor is reduced. The outer periphery of this screw rotor has helical teeth extending a predetermined length in the axial direction, wherein a diametral cross-section...  
WO/2019/187272A1
Provided is a rotary compressor in which a supply amount of an oil through an oil supply hole can be appropriately adjusted with a simple configuration. The present invention is provided with, inside a sealed container (10): a drive moto...  
WO/2019/180900A1
The compression mechanism of this hermetic compressor has a hollow cylinder, a crankshaft which is rotated by an electric motor, a rolling piston which is fitted to the eccentric shaft of the crankshaft and which rotates eccentrically al...  
WO/2019/183262A1
The present disclosure relates to a bearing load control system that includes a force application device configured to apply a force to a bearing of a compressor and a sensor configured to provide feedback indicative of an operating para...  
WO/2019/179723A1
The invention relates to a scroll compressor (10) with a housing composed of multiple sub-housings (12, 14, 16), comprising - a motor sub-housing (12) which is equipped with a drive motor with a stator (20) fixed to the housing and a coa...  
WO/2019/181244A1
Provided are a compressor and a heat pump system capable of switching an injection state in response to an operating condition with a simple configuration. The compressor is provided with at least a suction unit, a compression unit, and ...  
WO/2019/180779A1
This compressor draws up oil in an oil reservoir space through an oil supply path formed in a driving shaft and supplies the oil to a main bearing. A portion, of the driving shaft, supported by the main bearing is configured to have a ta...  
WO/2019/181245A1
Provided is an injection control method with which it is possible to simultaneously achieve an improvement in coefficient of performance (COP) and a back pressure load/compression reactive force balance of a scroll compressor in a refrig...  
WO/2019/175267A1
The invention relates to a rotary piston engine comprising a housing (1) spatially limiting a working chamber (2) , an intake connection (4) for guiding gas into the working chamber (2), a pressure connection (6) for guiding the gas out ...  
WO/2019/174596A1
A double-stage screw compressor and a compression method, the compressor comprising a main body (3), a low-pressure stage drive (1) and a high-pressure stage drive (2); the main body (3) comprises a low-pressure stage shell (11), a high-...  
WO/2019/171540A1
This rotary compressor is provided with a compression mechanism section which is lubricated by lubricating oil. The compression mechanism section includes: a first bearing and a second bearing, which are arranged at a distance from each ...  
WO/2019/171076A1
A rotor for a vacuum pump and a vacuum pump comprising the rotor are disclosed. The rotor comprises: an outer profile; at least one body within the outer profile mounted such that it is movable between an inner position towards a centre ...  
WO/2019/171562A1
Provided is a scroll-type fluid machine in which cooling wind is allowed to flow efficiently using a simple shape of cooling wind passageway, thereby increasing reliability without reducing productivity. Accordingly, the scroll-type flui...  
WO/2019/169922A1
A screw compressor and an air conditioning unit. The screw compressor comprises a first pressure-level rotor assembly (1), a second pressure-level rotor assembly (2), and a machine body (3). The first pressure-level rotor assembly (1) co...  
WO/2019/171448A1
This double-rotating scroll compressor is provided with: a driving-side scroll member (7); a driven-side scroll member; a motor which rotationally drives the driving-side scroll member (7); and a pin-ring mechanism (15) which transmits d...  
WO/2019/171508A1
Provided is a rotary compressor according to the present invention comprising a first injection flow path for injecting a refrigerant into a first compression chamber, a second injection flow path for injecting a refrigerant into a secon...  
WO/2019/170610A1
Vacuum pump with a rotor with at least one vane housed in a pump chamber, having fluid extraction flow prevented from being blocked by means of an outlet assembly comprising at least a first outlet conduct (100) with a first inner apertu...  
WO/2019/171074A1
A vacuum pump comprising: at least two rotors each comprising at least one lobe, the at least two rotors being mounted within a stator; at least one of the lobes comprising an inertial pressure relief valve, the inertial pressure relief ...  
WO/2019/169443A1
A rotary fluid device including an outer housing assembly and an inner rotating arrangement adapted to rotate relative to the outer housing assembly, the outer housing assembly including a rotor housing and the inner rotating arrangement...  
WO/2019/171075A1
A rotor and vacuum pump are disclosed for a vacuum pump. The rotor comprises: an outer profile and a hollow inner portion; at least one body within the hollow inner portion; and body constraining means for constraining the body. The at l...  
WO/2019/168526A1
In some examples, a scroll compressor may include an orbiting scroll and a fixed scroll having spiral involutes intermeshed together. A slider block may be disposed on the eccentric portion of a main shaft and the slider block may be att...  
WO/2019/167163A1
The rolling cylinder-type displacement compressor according to the present invention is provided with: a cylindrical rolling cylinder having a cylinder groove; a revolving piston having a slide groove; a stationary cylinder; a pin struct...  
WO/2019/168386A1
A scroll compressor according to the present invention comprises: a rotating shaft and a driving unit positioned inside a casing; a compression unit comprising a first fixed scroll and a second fixed scroll, which are fixed to the casing...  
WO/2019/166311A1
In order to improve reliable and efficient operating behavior during compression of water vapor as R718, particularly for refrigeration, air conditioning and heat pump technology, while simultaneously reducing construction volume and red...  
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/2019/167574A1
In this rotary compressor, the height of an upper piston in the axial direction of a rotating shaft is greater than the length of an upper eccentric section in the axial direction of the rotating shaft, and the height of a lower piston i...  
WO/2019/163308A1
A tip seal groove (3d) is formed in a tooth tip of a fixed scroll, and a tip seal (7) is accommodated therein. A step (9a) is provided in a tooth bottom corner (9) at the base of a wall (5b) of an orbiting scroll, said tooth bottom corne...  
WO/2019/163516A1
The purpose of the present invention is to provide a scroll fluid machine in which an intermediate-pressure refrigerant can be reliably introduced during a compression step and which can improve compressor efficiency. This scroll compres...  
WO/2019/163309A1
This scroll fluid machine is provided with a first scroll member which comprises a spiral first wall provided on a first end plate, and a second scroll member which comprises a spiral second wall provided on a second end plate arranged s...  
WO/2019/163939A1
A recess (37) which is recessed in the direction away from the outer peripheral surface (18c) of a rotor (18) is provided to the inner peripheral surface (14c) of a cylinder (14), and the recess (37) extends such that one-side end of the...  
WO/2019/163321A1
A wall (18b) comprises multiple wall inclined sections (18b2, 18b4, 18b6) in which the height of the wall (18b) changes continuously in the spiral direction of the wall (18b). An end plate (18a) comprises multiple end plate inclined sect...  
WO/2019/163323A1
In a scroll compressor (1) provided with a fixed scroll (3) and an orbiting scroll (5), an inclined section is provided in which the facing-surface distance (L) between an end plate (3a) and an end plate (5a) that face each other decreas...  
WO/2019/163332A1
On an end plate of a fixed scroll, an end plate inclined section (3a1) is provided in which a tooth bottom surface opposite of a tooth tip of a wall inclined section is inclined in accordance with the incline of the wall inclined section...  
WO/2019/163409A1
The present invention has improved oil separation performance. The present invention is provided with: a secondary separation chamber 42 configured so that, when a heat medium containing oil flows into an inner space extending in a top-b...  
WO/2019/163331A1
In a scroll compressor (1) provided with a fixed scroll (3) and an orbiting scroll (5), an inclined section is provided in which the facing-surface distance (L) between an end plate (3a) and an end plate (5a) that face each other decreas...  
WO/2019/163322A1
This scroll fluid machine is provided with a wall inclined section (3b1) which continuously decreases, and a wall flat section (3b2) provided on the innermost peripheral portion of the wall (3b) and which does not vary in height. At the ...  
WO/2019/163536A1
The purpose of the present invention is to provide a scroll fluid machine in which an intermediate-pressure refrigerant can be reliably introduced during a compression step and which can improve compressor efficiency. This scroll compres...  
WO/2019/141767A3
A method of operating an exhaust gas recirculation pump for an internal combustion engine including: providing an EGR pump assembly including an electric motor coupled to a roots device having rotors, the EGR pump operably connected to a...  
WO/2019/068273A4
The compressor (1) for the transport of gases is fitted with a vane wheel (2) enclosed in a cover (4). The cover (4) is equipped with at least one entry duct (5) and at least one exhaust duct (6). The bases (7) of the vane wheel (2) are ...  
WO/2019/163628A1
The purpose of the present invention is to provide a scroll fluid machine that can reliably introduce an intermediate-pressure refrigerant during a compression step and thus can improve compressor efficiency. In the present invention, a ...  
WO/2019/163537A1
This scroll compressor (1) comprises a fixed scroll (18) and an orbiting scroll (19). A first region is configured in which, after sealing of a compression chamber (20) has started, capacity change of the compression chamber (20) becomes...  
WO/2019/158489A1
A device for compressing and/or displacing a fluid (1), comprising a circular-cylindrical working chamber (2), at least two displacement elements (6) provided in the working chamber (2) and at least two interspaced inlet and outlet openi...  
WO/2019/155572A1
In a thrust bearing part of a compliant frame of a scroll compressor, a sliding surface that slides against a rocking scroll is formed on the thrust bearing, and formed in the compliant frame is an oil passage that joins together an oil ...  
WO/2019/153873A1
A screw compressor rotor structure and a variable-frequency screw compressor having the same. The screw compressor rotor structure comprises a female rotor, the female rotor comprising a female rotor body (10); a plurality of female toot...  
WO/2019/155516A1
This compressor is provided with: a shell; a compression mechanism unit which is accommodated in the shell and configures a compression chamber for compressing a refrigerant, and in which a discharge port for discharging the refrigerant ...  
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/2019/150421A1
In the present invention, an injection passage for supplying refrigerant to a refrigerant suction chamber is formed on a first base plate of a fixed scroll of a scroll compressor, the injection passage has an outlet passage that is open ...  
WO/2019/148954A1
A multi-stage roots dry vacuum pump, comprising a pump body (1) and an electric drive terminal, wherein the pump body (1) at least comprises a primary Roots system, and the Roots system at least comprises a primary Roots working unit (2)...  
WO/2019/148947A1
A compression mechanism (100) and a compressor comprising same. The compression mechanism (100) comprises: a cylinder (10) having a first working chamber (11), a slide vane slot (12), and an air valve slot (13), the first working chamber...  
WO/2019/150680A1
In order to provide a double rotating scroll-type compressor provided with a synchronous drive mechanism that can achieve a long lifespan, the present invention is provided with: a driving-side scroll member (90) that is rotationally dri...  

Matches 351 - 400 out of 37,959