Abrégé

An airfoil journal bearing journal bearing includes a bearing housing for rotatably supporting a rotation shaft and including a hollow through which the rotation shaft is inserted, and an airfoil between an inner circumferential surface of the bearing housing and an outer circumferential surface of the rotation shaft. The airfoil includes a first foil region extending in a circumferential direction and enclosing the circumference of the rotation shaft between 180 to 360 degrees, and a pair of second foil regions connected to opposite edges of the first foil region in an axial direction of the rotation shaft, extending in the circumferential direction and enclosing the circumference of the rotation shaft between 180 to 360 degrees, and including a plurality of elastic bumps formed in the circumferential direction on the surface of the second foil regions.

Classes IPC  ?

• F16C 17/02 - Paliers à contact lisse pour mouvement de rotation exclusivement pour charges radiales uniquement
• A47L 9/22 - Pièces d'assemblage des ailettes et du moteur
• H02K 5/167 - Moyens de support des paliers, p. ex. supports isolants ou moyens pour ajuster les paliers dans leurs flasques utilisant des paliers à contact lisse ou des chapeaux de palier sphériques

Abrégé

This air foil journal bearing comprises: a bearing housing having an inner surface that forms a cavity into which a rotation shaft can be inserted; an air foil that surrounds at least 180 degrees to 360 degrees of the outer surface of the rotation shaft when the rotation shaft is inserted into the cavity; and a ring member that surrounds the outer surface of the bearing housing. The bearing housing includes an insertion slit that passes from the inner surface of the bearing housing to the outer surface of the bearing housing. The air foil is bent in a radial direction of the air foil from a circumferential direction of the bearing housing and includes an insertion portion that is inserted into the bearing housing via the insertion slit. The air foil may be connected to the outer surface of the ring member via the insertion portion.

Classes IPC  ?

• F16C 17/02 - Paliers à contact lisse pour mouvement de rotation exclusivement pour charges radiales uniquement
• F16C 32/06 - Paliers non prévus ailleurs comprenant un élément mobile supporté par un coussinet de fluide engendré, au moins en grande partie, autrement que par la rotation de l'arbre, p. ex. paliers hydrostatiques à coussinet d'air
• F16C 27/02 - Paliers à contact lisse

Abrégé

An airfoil journal bearing including a bearing housing having an inner surface forming a hollow so that a rotation shaft is insertable in the hollow; an airfoil in the hollow so that, when the rotation shaft is inserted in the hollow, the airfoil encloses at least 180 to 360 degrees of a circumference of the rotation shaft; and a ring member enclosing an outer surface of the bearing housing. The bearing housing includes an insert slit formed through the bearing housing from the inner surface of the bearing housing to the outer surface of the bearing housing. The airfoil includes an insert part bent from a circumferential direction of the airfoil to a radial direction of the bearing housing and extending, through the insert slit, to the outer surface of the bearing housing. The airfoil is engaged with an outer surface of the ring member through the insert part.

Classes IPC  ?

• F04D 29/057 - Paliers hydrostatiquesPaliers hydrodynamiques

Abrégé

An air foil journal bearing may comprise: a bearing housing that rotatably supports a rotating shaft and includes a hollow space into which the rotating shaft is inserted; and an air foil that is disposed between the inner circumferential surface of the bearing housing and the outer circumferential surface of the rotating shaft. The air foil may comprise: a first foil area that extends in the circumferential direction to encompass 180 to 360 degrees around the rotating shaft; and a pair of second foil areas that are connected to both ends of the first foil area respectively along the axial direction of the rotating shaft, extend in the circumferential direction to encompass 180 to 360 degrees around the rotating shaft, and each have a plurality of elastic bumps formed along the circumferential direction on the surface thereof.

Classes IPC  ?

• F16C 17/02 - Paliers à contact lisse pour mouvement de rotation exclusivement pour charges radiales uniquement
• F16C 32/06 - Paliers non prévus ailleurs comprenant un élément mobile supporté par un coussinet de fluide engendré, au moins en grande partie, autrement que par la rotation de l'arbre, p. ex. paliers hydrostatiques à coussinet d'air
• F16C 27/02 - Paliers à contact lisse

Abrégé

The present invention relates to an airfoil thrust bearing comprising: a base plate; a bump foil which has uneven elastic bumps, and which is layered on the base plate such that one circumferential end portion thereof is coupled to the base plate; and a top foil which is layered thereon to cover the bump foil, and which has one circumferential end portion coupled to the base plate, wherein the bump foil is formed such that the height of the elastic bumps in a partial region adjacent to an outer diameter side in the radial direction is lower than the height of the elastic bumps in the remaining region, and thus the thrust bearing has higher durability since a primary damping friction part is separated from the region with the greatest energy loss according to the speed of a rotating body during excitation.

Classes IPC  ?

• F16C 17/04 - Paliers à contact lisse pour mouvement de rotation exclusivement pour charges axiales uniquement
• F16C 32/06 - Paliers non prévus ailleurs comprenant un élément mobile supporté par un coussinet de fluide engendré, au moins en grande partie, autrement que par la rotation de l'arbre, p. ex. paliers hydrostatiques à coussinet d'air

Abrégé

Provided is an air foil thrust bearing including a bump foil plate in which a plurality of bump foils are formed and an arrest ring protrudes in a thickness direction; and a top foil plate in which a plurality of top foils are formed, a through-hole penetrating through both sides of a second plate is formed in a position corresponding to the arrest ring, the top foil plate being stacked on the bump foil plate, wherein the arrest ring is inserted into and penetrates through the through-hole, the arrest ring is bent toward the top foil plate so that the second plate is caught in the arrest ring, and a time for a thrust runner to rise from the top foil at an early stage of starting a rotor as the arrest ring is spaced apart from the second plate.

Classes IPC  ?

• F16C 17/04 - Paliers à contact lisse pour mouvement de rotation exclusivement pour charges axiales uniquement

Abrégé

Provided is an air foil journal bearing including a bearing housing; a bump foil disposed inside the bearing housing, having an uneven-shaped elastic bump, having one end coupled and fixed to the bearing housing in the circumferential direction, and having the other end formed as a free end; an outer top foil disposed inside the bump foil; an inner top foil disposed inside the outer top foil; and a middle top foil interposed between the outer top foil and the inner top foil, and coupled and fixed to the bearing housing, thereby preventing deviation of the free end of the bump foil in the width direction due to vibration occurring when a rotor is rotated at a high speed.

Classes IPC  ?

• F16C 17/02 - Paliers à contact lisse pour mouvement de rotation exclusivement pour charges radiales uniquement
• F16C 27/02 - Paliers à contact lisse

Abrégé

An air foil journal bearing of the present invention is capable of preventing abrasion of foils and reducing vibration, and the air foil journal bearing has a surface treatment layer capable of reducing friction formed on one of the outer circumferential surface of a first top foil that is arranged on the innermost side and the outer circumferential surface of a second top foil which is arranged immediately outside the first top foil, thereby supporting a load in the radial direction of a rotor.

Classes IPC  ?

• F16C 17/02 - Paliers à contact lisse pour mouvement de rotation exclusivement pour charges radiales uniquement
• F16C 32/06 - Paliers non prévus ailleurs comprenant un élément mobile supporté par un coussinet de fluide engendré, au moins en grande partie, autrement que par la rotation de l'arbre, p. ex. paliers hydrostatiques à coussinet d'air
• F16C 35/02 - Supports rigides de paliersCorps de paliers, p. ex. calottes, couvercles dans le cas de paliers à contact lisse

Abrégé

An airfoil journal bearing includes a bearing housing having a hollow portion in which a rotor is disposed, and formed such that width-wise both sides are opened; a bump foil provided at an inner side of the bearing housing and formed in the circumferential direction thereof, and coupled and fixed to the bearing housing; and a top foil provided at an inner side of the bump foil and formed along the circumferential direction thereof, and of which one side is coupled and fixed to the bearing housing. The top foil comprises: an outer top foil, an inner top foil and an intermediate top foil interposed between the outer top foil and the inner top foil.

Classes IPC  ?

• F16C 17/02 - Paliers à contact lisse pour mouvement de rotation exclusivement pour charges radiales uniquement
• F16C 43/02 - Assemblage des éléments de paliers à contact glissant
• F16C 32/06 - Paliers non prévus ailleurs comprenant un élément mobile supporté par un coussinet de fluide engendré, au moins en grande partie, autrement que par la rotation de l'arbre, p. ex. paliers hydrostatiques à coussinet d'air

Abrégé

The present invention relates to an airfoil journal bearing having an improved top foil, comprising: a bearing housing having a hollow portion in which a rotor is disposed, and formed such that width-wise both sides are opened; a bump foil provided at an inner side of the bearing housing and formed along the circumferential direction thereof, and coupled and fixed to the bearing housing; and a top foil provided at an inner side of the bump foil and formed along the circumferential direction thereof, and of which one side is coupled and fixed to the bearing housing, wherein the top foil comprises: an outer top foil coming into close contact with the bump foil; an inner top foil provided at an inner side of the outer top foil so as to come into contact with the rotor; and an intermediate top foil interposed between the outer top foil and the inner top foil, and of which the length is formed to be shorter than those of the outer top foil and the inner top foil such that the other end portion thereof is positioned at a lower side of the rotor, and thus the horizontal movement range of the rotor can be reduced during the rotation of the rotor, and a squeeze angle formed by the rotor and the top foil is increased such that the rotor can float at a low rotational speed, thereby enabling the wear and vibration of the top foil to be reduced.

Classes IPC  ?

• F16C 17/02 - Paliers à contact lisse pour mouvement de rotation exclusivement pour charges radiales uniquement
• F16C 32/06 - Paliers non prévus ailleurs comprenant un élément mobile supporté par un coussinet de fluide engendré, au moins en grande partie, autrement que par la rotation de l'arbre, p. ex. paliers hydrostatiques à coussinet d'air
• F16C 33/10 - Structures relatives à la lubrification

Abrégé

The present invention relates to an electronic control valve of a variable-capacity compressor and, more specifically, to an electronic control valve of a variable-capacity compressor, the valve comprising: a valve body having a crank chamber pressure port, a discharge pressure port, and a suction pressure port; a valve part including, therein, a hollow guide for opening only any one of a first passage connected from the discharge pressure port to the crank chamber pressure port and a second passage connected from the crank chamber pressure port to the suction pressure port; and a solenoid for closing the other side of the valve part, wherein bellows tension allowing the guide to be elastically supported toward the solenoid is formed so as to be adjustable by the rotation of a tension adjustment part closing one end of the valve part, and thus pressure linearity and control precision are improved.

Classes IPC  ?

• F04B 27/10 - Pompes multicylindres spécialement adaptées aux fluides compressibles et caractérisées par le nombre ou la disposition des cylindres ayant des cylindres coaxiaux, parallèles ou inclinés par rapport à l'arbre principal les cylindres étant immobiles
• F04B 27/08 - Pompes multicylindres spécialement adaptées aux fluides compressibles et caractérisées par le nombre ou la disposition des cylindres ayant des cylindres coaxiaux, parallèles ou inclinés par rapport à l'arbre principal
• F04B 27/18 - Commande pour pompes à cylindres immobiles en modifiant les positions relatives d'un plateau en biais et d'un bloc-cylindres
• F04B 27/22 - Commande pour pompes à bloc-cylindres rotatifs en modifiant les positions relatives d'un plateau en biais et d'un bloc-cylindres
• F04B 39/10 - Adaptation ou aménagement des organes de distribution
• F04B 53/10 - ClapetsAgencement des clapets
• F16K 31/06 - Moyens de fonctionnementDispositifs de retour à la position de repos électriquesMoyens de fonctionnementDispositifs de retour à la position de repos magnétiques utilisant un aimant
• H01F 7/16 - Armatures à mouvement rectiligne

Abrégé

The present invention relates to an air foil journal bearing having an improved housing structure, the air foil journal bearing comprising: a bearing housing having an empty space in which a rotor is disposed, and formed such that opposite lateral sides thereof are open; a bump foil provided inside the bearing housing and formed along the circumferential direction, wherein one side of the bump foil is fixedly coupled to the bearing housing; and a top foil provided inside the bump foil and formed along the circumferential direction, wherein one side of the top foil is fixedly coupled to the bearing housing, wherein the bearing housing has an inner circumferential surface formed in an oval shape wider in the vertical direction, or has an inner circumferential surface having an upper side formed in a circular shape and a lower side formed in an oval shape wider in the vertical direction, which enables the rotor to rotate with the center of rotation thereof agreeing with the center of the bearing housing while the rotor is rotating.

Classes IPC  ?

• F16C 17/02 - Paliers à contact lisse pour mouvement de rotation exclusivement pour charges radiales uniquement
• F16C 27/02 - Paliers à contact lisse

Abrégé

The present invention relates to an air foil journal bearing having improved durability, comprising: a bearing housing, which has a hollow portion formed therein such that a rotor is arranged therein, and which is formed such that both transverse sides thereof are open; a bump foil provided inside the bearing housing and formed along the circumferential direction, one end or both ends of the bump foil being coupled and fixed to the bearing hosing; and a top foil provided inside the bump foil and formed along the circumferential direction, both ends of the top foil being arranged on the lower side thereof in the gravitational direction, being spaced from each other, and being coupled to the bearing housing, wherein, when the rotor, which is arranged inside the top foil and rotated, is activated and stopped, the rotor is supported to contact two parts of the lower portion of the top foil, which are spaced from each other, such that, even if the rotor is repeatedly activated and stopped, wear of the inner peripheral surface of the top foil, resulting from friction between the rotating rotor and the top foil, is reduced, thereby improving the durability of the bearing.

Classes IPC  ?

• F16C 17/02 - Paliers à contact lisse pour mouvement de rotation exclusivement pour charges radiales uniquement
• F16C 27/02 - Paliers à contact lisse

Produits et services

Turbo blowers; turbo compressors; pumps used for sewage treatment plants; turbojet engines for aircraft.

Produits et services

(1) Turbo compressors, Pumps used for sewage treatment plants, Turbojet engines for aircraft. (2) Turbo blowers.

Produits et services

Power-operated turbo blowers; turbo compressors for machines [ ; sewage pumps used for sewage treatment plants; turbojet engines for aircraft ]

Abrégé

The present invention provides a journal foil air bearing (100a) having: a bearing housing (10) having a cavity (80) in which a rotor (5) is disposed; and a top foil (6) and a bump foil (4), which are provided between the rotor (5) and an inner surface of the cavity (80) in the cavity (80) of the bearing housing (10), wherein a damping sheet (8), which is a foil having less stiffness than those of the top foil (6) and the bump foil (4), is disposed between the top foil (6) and the bump foil (4).

Classes IPC  ?

• F16C 27/02 - Paliers à contact lisse
• F16C 32/06 - Paliers non prévus ailleurs comprenant un élément mobile supporté par un coussinet de fluide engendré, au moins en grande partie, autrement que par la rotation de l'arbre, p. ex. paliers hydrostatiques à coussinet d'air

Abrégé

A thrust foil air bearing has a bump foil arranged on a thrust plate. A top foil includes a flat surface extending along top bumps of the bump foil, an edge attached to the thrust plate, and a ramp connecting the edge and the flat surface. The ramp forms a curvature. The curvature has a center located in a lower part of the ramp and tangentially contacts the top of a first bump of the bump foil.

Classes IPC  ?

• F16C 32/06 - Paliers non prévus ailleurs comprenant un élément mobile supporté par un coussinet de fluide engendré, au moins en grande partie, autrement que par la rotation de l'arbre, p. ex. paliers hydrostatiques à coussinet d'air
• F16C 17/04 - Paliers à contact lisse pour mouvement de rotation exclusivement pour charges axiales uniquement

Abrégé

The present invention relates to a thrust foil air bearing having improved load capacity. According to the present invention, a ramp (990) of a top foil (900) of a thrust plate air bearing has a curvature, the center point (O) of which is formed below the ramp (990), and the ramp (990) is arranged to horizontally contact a first bump (81) of a bump foil (80), thereby improving the overall air pressure of the bearing and thus improving load capacity.

Classes IPC  ?

• F16C 32/06 - Paliers non prévus ailleurs comprenant un élément mobile supporté par un coussinet de fluide engendré, au moins en grande partie, autrement que par la rotation de l'arbre, p. ex. paliers hydrostatiques à coussinet d'air

Abrégé

b are mounted in a slot 414 of a slot body 40 mounted in a slot 140 provided in the inner periphery of the hole 18 in the bearing housing 10 and the top foil 300 is elastically movable therein.

Classes IPC  ?

• F16C 32/06 - Paliers non prévus ailleurs comprenant un élément mobile supporté par un coussinet de fluide engendré, au moins en grande partie, autrement que par la rotation de l'arbre, p. ex. paliers hydrostatiques à coussinet d'air

Abrégé

A journal foil air bearing 5000 according to the present invention is provided with one top foil 300 along an inner periphery of a hole 18 of a bearing housing 10. Bump foils 20c and 20d are installed at the inner periphery of the hole 18 of the bearing housing 10 where they are distanced from each other. Both ends of the top foil 300 form bent portions 308a and 308b and the bent portions 308a and 308b are mounted in a slot 414 of a slot body 40 mounted in a slot 140 provided in the inner periphery of the hole 18 in the bearing housing 10 and the top foil 300 is elastically movable therein.

Classes IPC  ?

• F16C 27/02 - Paliers à contact lisse
• F16C 32/06 - Paliers non prévus ailleurs comprenant un élément mobile supporté par un coussinet de fluide engendré, au moins en grande partie, autrement que par la rotation de l'arbre, p. ex. paliers hydrostatiques à coussinet d'air

Abrégé

A blow-off valve for a turbo blower 1000 has a body part 100 which includes a cylinder part 110, a valve-guide plate 130 on the cylinder part 110 and a head part 150 covering the valve-guide plate 130. In the cylinder part 110, a blow-connection opening 1038 connected with a blow opening 2500 of the turbo blower 2000 and a blow-off opening 1058 to blow off the emission air from the turbo blower 2000. A spool valve 300 is provided and a blow-pressure spool 380 is located at space connected with the blow-connection opening 1038 and a blow-pressure opposing spool 330 is located between the valve-guide plate 130 and the head part 150 and a stem of the spool valve penetrates the valve-guide plate 130 and is supported thereby. A three-way solenoid valve 20 is mounted on the head part 150.

Classes IPC  ?

• F16K 31/14 - Moyens de fonctionnementDispositifs de retour à la position de repos actionnés par un fluide montés sur soupapes à fonctionnement manuel ou conjugués avec celles-ci

Abrégé

A blow-off valve for a turbo blower 1000 has a body part 100 which includes a cylinder part 110, a valve -guide plate 130 on the cylinder part 110 and a head part 150 covering the valve-guide plate 130. In the cylinder part 110, a blow-connection opening 1038 connected with a blow opening 2500 of the turbo blower 2000 and a blow-off opening 1058 to blow off the emission air from the turbo blower 2000. A spool valve 300 is provided and a blow-pressure spool 380 is located at space connected with the blow-connection opening 1038 and a blow-pressure opposing spool 330 is located between the valve-guide plate 130 and the head part 150 and a stem of the spool valve penetrates the valve-guide plate 130 and is supported thereby. A three-way solenoid valve 20 is mounted on the head part 150.

Classes IPC  ?

• F04D 29/00 - Parties constitutives, détails ou accessoires