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JP7254565B2 |
To suitably keep seal performance of a seal mechanism.An open type scroll compressor 1 comprises: a housing 2 internally filled with refrigerant gas including lubricating oil; a driving shaft 6 to be rotated around a center axis extendin...
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JP2023514693A |
The dry vacuum pump (1) includes one elastic outer seal (16) and at least one elastic inner seal (17), which are parallel to each other and respectively end pieces (9, 10) and a second seal. 1, first and second end annular portions (161,...
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JP2023511718A |
A seal set for sealing between stator components of a pump, the stator components being attached to either end of the two half-shells defining at least one pumping chamber. The seal set includes at least one annular seal for sealing betw...
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JP7231554B2 |
A lubricant-sealed vacuum pump, such as a rotary vane pump, comprises a rotor element (16) arranged in a suction chamber (10). The rotor element (16) is carried by a rotor shaft (26). The shaft (26) is surrounded by a main seal (32) arra...
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JP2023012367A |
To provide an annular seal member of a compressor which can exert stable low-torque performance without causing the deterioration of durability and the lowering of a seal function.In a scroll compressor, an annular seal member 16 compris...
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JP7211947B2 |
A pump assembly may include a rotor having a rotor shaft portion; a stator having a bore portion defining a bore for receiving the rotor shaft portion; and a circumferential protrusion extending radially into the bore between the bore po...
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JP7206084B2 |
To reduce the mixed amount of other fluids into a coolant.A scroll compressor 100 includes: a rotary shaft 4 which rotates about an axis O1; a bearing device 9A which supports the rotary shaft 4; a driving portion 3 which drives the rota...
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JP2022162791A |
To provide a highly reliable shaft seal structure, and to provide a vacuum pump.In a shaft seal structure, a rotor shaft has: a first end part; a second end part opposite to the first end part; an outer peripheral surface which is contin...
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JP2022542034A |
A scroll pump (100, 200) comprises a first scroll comprising a first helical wall (124, 224); a second scroll comprising a second helical wall (134, 234) intermeshing with the first helical wall; a scroll; and a pad (180, 280) formed fro...
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JP3238896U |
A shaft seal that prevents lubricating oil from entering a rotor chamber from a bearing and prevents liquid or gas from leaking out of the rotor chamber to the bearing side, enabling energy-saving operation and reducing manufacturing cos...
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JP2022104058A |
To provide a shaft seal structure of an oil-cooled screw compressor capable of reducing an oil supply amount to a shaft seal portion while preventing leakage of a compressed gas from a rotor chamber.A cylindrical spacer 36 for shaft seal...
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JP7092061B2 |
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...
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JP2022095194A |
To inhibit an oil in a gear chamber from leaking into a rotor chamber and improve reliability of an electric pump.Since sealability between a gear chamber 24 and a motor chamber 23 by a third seal member 52 is lower than sealability betw...
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JP7089957B2 |
To prevent slipping of a clutch by preventing leakage of lubrication oil and quickly discharge the sealed lubrication oil.There is provided an open type compressor includes: a housing 2 having a through hole 12; a compression mechanism; ...
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JP2022089649A |
To provide a shaft seal part structure of an oil-free screw compressor that can prevent entry of lubricating oil into the side of a rotor chamber even when rotation speed of a screw rotor is decreased.Between a bearing 8 supporting a rot...
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JP7059175B2 |
To improve corrosion resistance.A seal member 50 includes a first split surface protruding part 55 which protrudes from a second lip part 54 side end part on an outer peripheral surface 51b of a seal body part 51 to a groove outer chamfe...
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JP7057532B2 |
A high-pressure dome type scroll compressor is provided with an oil collection ring (70) and an oil collection path (71). The oil collection ring (70) is disposed below a rolling bearing (62) in a high-pressure space, and is configured t...
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JP7052563B2 |
To provide a compressor which is high in reliability, and excellent in performance by securing a necessary high-pressure oil storage capacity while suppressing the leakage of a refrigerant.A housing 2 accommodates a compression mechanism...
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JP2022056878A |
To provide a shaft seal capable of reducing a rotation torque and having an excellent sealability.A shaft seal 1 is an annular shaft seal for encapsulating sealed fluid in close contact with an outer periphery of a rotation shaft 6, and ...
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JP7047792B2 |
A compressor includes a rotary shaft, a rotating body, which rotates together with the rotary shaft, and a fixed body, which does not rotate together with the rotary shaft. The rotating body has a rotating body surface, and the fixed bod...
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JP7045309B2 |
A seal member includes pushing projections that project from a seal body toward at a groove inner-side circumferential surface and are arranged at intervals in a circumferential direction of the seal body. The pushing projections push th...
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JP7037335B2 |
To provide a gas jetting device that can increase pressure of a gas to be compressed, and to provide a gas jetting system.A gas jetting device includes a cylinder, a rotor and a spacer. The rotor performs rotation movement inside the cyl...
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JP7014940B2 |
To solve problems in a conventional rocking seal rotary pump that a cost is high as a rotor and a driving shaft are divided, and internal leakage is increased due to seal by clearance, which degrades performance, and that in a case of mu...
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JP2021193292A |
To provide a roots blower 10 or a roots vacuum pump comprising a shaft sealing mechanism which can prevent lubricating oil 25 from intruding into a rotor chamber 11a from a bearing 16, can prevent liquid and gas of the rotor chamber 11a ...
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JP6963452B2 |
To provide an open type compressor that can be driven stably.An open type compressor 1 comprises: a compressor body driven together with rotation of a driven shaft 6; and a seal part sealing leakage of fluid in contact with an outer peri...
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JP6961439B2 |
To provide an open type compressor that can be driven more stably.The compressor comprises: a compressor body having a drive shaft 6 rotating around an axial line X and driven together with the rotation of the drive shaft 6 to compress f...
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JP6961438B2 |
Provided is an open type compressor (1), which includes: a compressor main body (1A) that has a driving shaft (6) rotated about an axis (X) and compresses a fluid; and a seal part (9) that comes into contact with an outer circumferential...
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JP2021169796A |
To achieve improvement of durability of a seal member.A root pump 10 includes a discharge passage 50 which connects an interior of a gear chamber 24 and an interior of a suction pipe 48. The discharge passage 50 is provided with a valve ...
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JP6948208B2 |
To improve volumetric efficiency by reducing the quantity of oil to be supplied to a shaft seal of an oil-cooled screw compressor.In a shaft seal 14 configured by providing an oil seal 50 in a clearance gap between a drive shaft 33 which...
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JP6948206B2 |
To prevent a seal member of a lip seal from being abnormally worn or burnt even in a case where a pressure difference between the inside and the outside is considerable in an oil-cooled screw compressor adopting the lip seal.The present ...
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JP6929042B2 |
To retain an excellent air compression performance at a low-cost.An air compression device according to an embodiment comprises a cylinder, a rotor and a seal member. The rotor is rotatably disposed at the center of a rotation axis in th...
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JP6917845B2 |
To provide a scroll type fluid machine which enables lubrication of a lip seal located at the downstream of a slide bearing to be secured even if a driving shaft is rotatably supported by the slide bearing.A first supply passage 47 which...
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JP6903506B2 |
To inhibit a leakage flowing from a gap between a discharge side end surface of a screw rotor and a rotor side end surface of a discharge casing to the bearing chamber side via a gap between a rotor shaft and a shaft hole of the discharg...
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JP2021095990A |
To provide a backup ring seal shape which can be efficiently (inexpensively) manufactured, in the backup ring seal.In a backup ring seal 100b, it is preferable that a shape of a contact face of a rubber O-ring seal 200b is formed into a ...
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JP6863314B2 |
To provide a vane type compressor capable of suppressing deflection of a part positioned near an inner side in a radial direction, of a side plate, toward a cylinder chamber side.A vane type compressor 10 includes a gasket 50, a rear hou...
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JP6852683B2 |
To perform a stable supply of oil to a seal member even if a spacer arrangement work is being facilitated.A first outer layer 61 and a second outer layer 62 are arranged alternatively in a peripheral direction of the second spacer 35 and...
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JP6852636B2 |
The invention provides a vane compressor, which will not supply excess backpressure to a vane backpressure chamber. In a vane compressor (10), on the end surface of the cylinder side of a partition wall (15), a backpressure groove (15a) ...
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JP6842148B2 |
To provide a multistage roots vacuum pump device capable of preventing a housing drain 62 having entered a shaft seal part 50 from entering bearings 35, 36, 37, 38.Along with the operation, a part of fluid 61 containing cleaning liquid s...
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JP2021032107A |
To regulate the movement of a drive shaft in the axial direction even if the drive shaft is rotatably supported only by slide bearings with respect to a housing of a compressor.A scroll type compressor 100 comprises a scroll unit 120 tha...
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JP6808510B2 |
A scroll compressor includes scroll members that include a compression chamber to compress working fluid, a housing that houses the scroll members, a second driving-side shaft portion that discharges the compressed working fluid from the...
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JP6804655B2 |
This co-rotating scroll compressor is provided with: a first side plate (27) which is arranged on the side of a drive-side rotational axis direction (CL1) with respect to a drive-side scroll member (70) and a driven-side scroll member (9...
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JP6785488B2 |
To provide a root blower 10 comprising a shaft seal part capable of prolonging the durability life of a bearing 21, a timing gear 24 and a mechanical seal 18.By introducing and pressurizing nitrogen gas or an inert gas such as air into a...
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JP6779528B2 |
To provide a dry vacuum pump comprising a lubricant outflow prevention structure capable of preventing an oil from being moved from a gear chamber to the side of a pump chamber.In a multistage roots pump 1, a lubricant outflow prevention...
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JP6778231B2 |
To provide a vacuum apparatus having a compact seal device.A seal device (21) has a rotor element (27), and the rotor element is non-rotatably connected to a shaft (13). The seal device (21) has a first stator element (23), and the stato...
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JP6766640B2 |
A compressor includes a compression portion (C, C1, C2) having a drive shaft (9), a first housing (1, 3, 27, 29, 35, 37, 49, 51) having an annular seal recess (11a, 23a, 28a, 35a, 35b, 37b, 49a, 51b), a second housing (1, 3, 31, 33, 39, ...
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JP6761652B2 |
To provide an on-vehicle compressor and other on-vehicle devices capable of effectively preventing corrosion of a seal face of a metallic case kept into contact with an elastic seal material for sealing between abutted end portions of th...
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JP2020133485A |
To provide a compressor capable of preventing a gap between a vane and a fixed body face.A compressor comprises: a rotating shaft 12; a rotating body 60 which is rotated along with rotation of the rotating shaft 12; fixed bodies 90 and 1...
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JP2020133573A |
To provide a compressor capable of preventing a vane from being oscillated in a circumferential direction.A compressor 10 comprises: a rotating shaft 12; a rotating body 60; a front fixed body 90; a vane 131 inserted into a vane groove f...
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JP6735259B2 |
A screw compressor 1 is provided with: a rotor casing 10 that defines a rotor chamber S1 accommodating a screw rotor body 16a; a shaft part 16c that extends from the screw rotor body 16a in such a manner as to penetrate through the rotor...
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JP2020105931A |
To provide a small-sized vacuum pump that has small size and light weight and does not require an air supply source, and a pump built-in type robot hand including the small-sized vacuum pump.A pump built-in type robot hand is equipped wi...
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