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WO/2021/144846A1 |
According to the invention, a fixed scroll and an orbiting scroll each have a seal groove for retaining a seal material at the addendums of a fixed-side scroll tooth and an orbiting-side scroll tooth, the seal groove having a seal materi...
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WO/2021/144875A1 |
The purpose of the present invention is to provide a scroll compressor that can achieve a greater intake volume while also ensuring the retainability of a tip seal. In this invention, a fixed spiral body (1b) and an oscillating spiral bo...
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WO/2021/144948A1 |
Provided is a scroll compressor having a further improved compressibility while preventing the entire device from becoming complicated. A scroll compressor 10 of the present invention includes: a fixed scroll 21 fixed to the compressor m...
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WO/2021/142085A1 |
Volume ratio control system for a compressor including a chamber (118) formed within a housing (112) of the compressor (100), a piston (116) disposed within the chamber (118), where the piston (116) is configured to separate the chamber ...
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WO/2021/139201A1 |
A scroll assembly and a compressor having the scroll assembly. The scroll assembly comprises a first scroll (1), a second scroll and a high-temperature protection device (3); the high-temperature protection device (3) comprises a dischar...
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WO/2021/142087A1 |
A volume ratio control system for a compressor includes a chamber formed within a housing of the compressor, where the chamber is in fluid communication with a high pressure side of the compressor, a piston disposed within the chamber, w...
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WO/2021/140567A1 |
This scroll component comprises: a scroll substrate that has a sliding surface for sliding in contact with another member and that is composed of an aluminum alloy; and a coating layer formed on the sliding surface of the scroll substrat...
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WO/2021/139421A1 |
A screw compressor and an air conditioner. The screw compressor comprises a housing (1) and a rotor assembly. The rotor assembly is rotatably arranged inside the housing and comprises: a rotating shaft, and coaxially arranged on the rota...
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WO/2021/139890A1 |
A spiral compressor having a compressor housing (10), having a high-pressure chamber (80), having a low-pressure chamber (87) which is fluidically connected via an oil return channel (90) to the high-pressure chamber (80), wherein an oil...
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WO/2021/136609A1 |
A scroll compressor (1) comprising an enclosure (2); a compression section (6) arranged within the enclosure (2), the compression section (6) comprising a fixed scroll element (7) having a first baseplate (11) and a first wrap portion (1...
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WO/2021/130119A1 |
A vacuum pump is disclosed. The pump comprises: an enclosure having a pumping chamber which houses a pair of inter-engaging lobed rotors, each carried by respective bearings located within bearing apertures defined by a head plate; and a...
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WO/2021/128905A1 |
A pump body assembly (15) and a variable capacity compressor. The variable capacity compressor is provided with a pump body assembly (15), comprising cylinder members (204, 207), a sliding piece (213) and a pin member (209). There are a ...
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WO/2021/128916A1 |
A scroll and support assembly, and a scroll compressor. The scroll and support assembly comprises: a non-orbiting scroll (130); an orbiting scroll (120) that works in conjunction with the non-orbiting scroll (130) to compress or expand a...
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WO/2021/130875A1 |
A scroll compressor (1) is provided with a fixed scroll (5) having a spiral lap (5c), an orbiting scroll (6) having a spiral lap (6a) engaging with the lap of the fixed scroll, a frame (9) supporting the fixed scroll, and a sealed contai...
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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/2021/124086A1 |
Compressor device (2) provided with at least one compressor element (3) and a drive (4) for the compressor element (3), characterized in that all bearings (6) of at least one shaft in the compressor device (1) configured to carry static ...
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WO/2021/124853A1 |
A compressor in which a first sliding surface (53) having a wide axial width and a second sliding surface (54) having a narrow axial width are formed between a mating shaft part (51) and a mating tube part, wherein the first sliding surf...
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WO/2021/124424A1 |
This scroll compressor is provided with a sealed container, a frame, a fixed scroll, a turning scroll, and a crank shaft. Further provided are: a turning shaft disposed on the anti-wrap side of the turning scroll; a main shaft section di...
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WO/2021/125200A1 |
Provided is a sliding component that can reduce the frictional resistance of a sliding surface that accompanies eccentric rotation. In the sliding component 7 having an annular shape and having a sliding surface 7a that slides relative...
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WO/2021/119879A1 |
A screw vacuum pump having an internal nitrogen gas seal provided at a gas discharge side. A sealed nitrogen gas flow cavity (15) is provided between a mechanical seal (14) and a lip seal (13) in a front housing (2). A nitrogen gas flow ...
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WO/2021/126766A1 |
A crescent member is disclosed which is configured to be in constant contact with outer and inner gear teeth to prevent unwanted fluid backflow between the gears. The crescent member may be part of a low-pressure fuel pump system for a d...
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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/2021/124500A1 |
This scroll compressor comprises a hermetic container, a frame, a fixed scroll, an orbiting scroll, and a crank shaft. The scroll compressor also comprises: a main shaft part provided to an orbiting scroll side end section of the crank s...
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WO/2021/124852A1 |
This compressor has formed therein: a first sliding surface (53) having a large axial width between a fitting shaft part and a fitting cylindrical part (52); and a second sliding surface (54) having a small axial width, wherein the first...
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WO/2021/120656A1 |
A scroll compressor (100), comprising an orbiting scroll component (160), a non-orbiting scroll component (150), a bypass passage (BP), a slider (180), a bypass control unit (BC), and a biasing member (181). A plurality of compression ca...
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WO/2021/124909A1 |
Provided are a resin molding, a resin foam molding, and a scroll rotor, in which mechanical strength is maintained and excellent dimensional precision is obtained even while the cost thereof is kept low. A scroll rotor (1) is a resin mol...
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WO/2021/124768A1 |
A compressor (10) equipped with a casing (20) and a motor (60). The internal space (M) of the casing (20) includes a first space (M1) formed on one end side of the motor (60) and a second space (M2) formed on the other end side of the mo...
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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/2021/124973A1 |
This scroll compressor comprises an Oldham ring (17) that prevents rotation of an orbiting scroll, wherein the Oldham ring (17) has an upper annular part communication passage (17d) that is on an axial upper surface of an annular part (1...
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WO/2021/117173A1 |
This scroll compressor includes a fixed scroll and an orbiting scroll inside an airtight container. The fixed scroll has a fixed base plate and a fixed spiral body provided on the fixed base plate. The orbiting scroll has an orbiting bas...
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WO/2021/117601A1 |
Provided is a shaft seal that is able to reduce rotational torque and that has excellent sealing properties. A shaft seal 1 is an annular shaft seal that is attached to the outer-circumferential surface of a rotary shaft 6, thereby seali...
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WO/2021/115647A1 |
The invention relates to an electrical orbiter vacuum pump having optimised control for cost-effectively improving the efficiency and acoustics. The orbiter vacuum pump is characterised in that, in order to compensate for angular speed c...
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WO/2021/117490A1 |
Provided is a scroll compressor in which any decrease in efficiency caused by wear of a scroll is suppressed. A scroll compressor (100) comprising a fixed scroll (21) and a movable scroll (22). The vertical dimension of a fixed-side wrap...
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WO/2021/114718A1 |
A main bearing seat (1) and a scroll compressor provided with the main bearing seat (1). The main bearing seat (1) comprises: a recess (11), wherein a movable scroll member (3) of the scroll compressor is jointed with a drive shaft (2) i...
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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/2021/117137A1 |
This scroll compressor is provided with a closed container, a frame, a stationary scroll, an orbiting scroll, and a crankshaft. The invention is also provided with: a rotating shaft provided so as to protrude out to an anti-lap side of t...
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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/2021/112705A1 |
The invention relates to rotary piston machines, specifically to a cooling system of said machines, and can be used in gas (air) and refrigeration compressors and heat and vacuum pumps. A compressor cooling system comprises a deflector c...
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WO/2021/111546A1 |
A compressor according to the present invention is provided with: a compression mechanism part that ejects a refrigerant compressed therein from an ejection port; a sealing container in which the compression mechanism part is accommodate...
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WO/2021/106145A1 |
An oil supply system for a compressor according to one embodiment comprises an oil separator connected to a discharge pipe of the compressor, an oil tank for receiving oil from an oil reservoir of the oil separator, an oil pipe provided ...
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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/2021/106061A1 |
A screw compressor is provided with a slide valve movement mechanism that slides and moves a slide valve in a rotating shaft direction of a screw rotor. The slide valve movement mechanism is provided with a hollow cylinder that is provid...
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WO/2021/106198A1 |
This compressor is provided with: a sealed container which serves as an outer shell; a motor having a stator and a rotor in the sealed container; a crankshaft which has, in the sealed container, a plurality of eccentric shafts having rol...
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WO/2021/106861A1 |
Provided is a highly reliable scroll compressor capable of suppressing an outflow of oil. A scroll compressor (10) is provided with a compression mechanism (30) for compressing a refrigerant, a motor (40) for driving the compression mech...
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WO/2021/100202A1 |
Only one of an outer curved line and an inner curved line of each of a fixed spiral member and an orbiting spiral member is a curved line which is an involute of a base circle and which is defined by expression (1) and expression (2) usi...
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WO/2021/100167A1 |
A rotary compressor that comprises a sealed container, an annular cylinder that is housed in the sealed container, a rolling piston that rotates eccentrically along an inner circumferential surface of the cylinder, a vane that reciprocat...
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WO/2021/100165A1 |
This rotary compressor comprises: a sealed container; an annular cylinder housed in the sealed container; a rolling piston that rotates eccentrically along the inner circumferential surface of the cylinder; a vane that moves in a recipro...
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WO/2021/098312A1 |
Disclosed are a pump body assembly, a fluid machine, and a heat exchange apparatus. The pump body assembly comprises: a piston (1); a rotary shaft (2); a cylinder (4) with an intake port (43) and an exhaust port (41); and a piston sleeve...
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