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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 3614. Отображено 100.
26-01-2012 дата публикации

Fluid Machine

Номер: US20120019010A1
Автор: Hirofumi Wada, Shinji Nakamura
Принадлежит: Sanden Corp

Purpose: To provide a fluid machine, the production efficiency and maintenance characteristics of which can be improved while performance is ensured. Means to attain the purpose: A fluid machine ( 14, 102, 108 ) has a plurality of fluid units ( 16, 20 ) that include rotating bodies ( 40, 66 ) and suck/discharge a working fluid along with the rotation of the rotating bodies, and a drive shaft ( 72 ) connected with the rotating bodies of the fluid units; and an Oldham's coupling ( 85 ) is mounted on a shaft portion between each two adjacent rotating bodies of the drive shaft.

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Номер записи: 1
30-08-2012 дата публикации

Seal retaining sleeve for gear pump

Номер: US20120219445A1
Автор: Satish Shantilal Shah, Timothy P. Walgren
Принадлежит: Hamilton Sundstrand Corp

A shaft assembly includes a shaft with a first radial shoulder and a second radial shoulder along a shaft axis. A seal retaining sleeve is defined around the shaft axis to position a shaft seal. A retainer plate at least partially between the first radial shoulder and the second radial shoulder is adjacent to the seal retaining sleeve to position and provide access to the seal retaining sleeve and shaft seal.

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Номер записи: 2
24-01-2013 дата публикации

Unified variable displacement oil pump and vacuum pump

Номер: US20130022485A1
Автор: Dennis N. Koenig, Douglas G. Hunter
Принадлежит: SLW Automotive Inc

A unified variable displacement pump having a housing which includes a fluid pump and a vacuum pump. A portion of the housing is part of the fluid pump, and a portion of the housing is part of the vacuum pump. A shaft extends through the fluid pump and the vacuum pump. A vacuum pump rotor is formed as part of the shaft, and a vane pump rotor is mounted to the shaft such that when the shaft rotates, the vacuum pump rotor and the vane pump rotor rotate, causing the fluid pump to pump fluid and the vacuum pump to generate a vacuum. The vacuum pump and fluid pump are combined into a single component driven by a single shaft.

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Номер записи: 3
25-07-2013 дата публикации

Delivery unit

Номер: US20130189142A1
Автор: Evgenij Skrynski
Принадлежит: ROBERT BOSCH GMBH

A delivery unit is already known, which comprises a drive shaft and a rotor driven by the drive shaft. The rotor is rotatably arranged in a stator housing, wherein the rotor has a toothing on the end face of said rotor that is remote from the drive shaft, wherein said toothing meshes with a toothing constructed on the stator housing. The drive shaft comprises an oblique sliding plane interacting with the rotor and which is constructed on a shoulder of the drive shaft and allows the rotor to gyrate with the rotor axis thereof about the drive axis of the drive shaft. Work spaces are formed between the toothing of the rotor and the toothing of the stator housing, wherein said work spaces can be filled via an inlet and emptied via an outlet. In one embodiment the fluid is admitted axially and discharged radially, and in the other embodiment the fluid is admitted and discharged axially. For that purpose, control valves in the form of non-return valves are required. The non-return valves cause additional internal leakages, resulting in a reduction in the volumetric efficiency of the pump. The valves are additional parts, which are associated with additional costs and an increased risk of failure. In the delivery unit according to the invention the control valves can be dispensed with. According to the invention the inlet ( 15 ) is provided in a channel ( 20 ) of the drive shaft ( 2 ) and the outlet ( 16 ) is provided at the shoulder ( 6 ) of the drive shaft ( 2 ).

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Номер записи: 4
14-11-2013 дата публикации

Scroll expander

Номер: US20130302199A1
Автор: Atsushi Unami, Tamotsu Fujioka
Принадлежит: Anest Iwata Corp

In a double rotation type scroll expander having double expansion chambers, a single integrated drive shaft is disposed to penetrate the interior of a housing, the double expansion chambers are formed by a drive scroll body and a driven scroll body, and a working medium introduction hole is provided in an axial direction of the drive shaft such that the working medium is supplied evenly to the double expansion chambers through the working medium introduction hole via a radial direction hole. The drive shaft and the drive scroll body formed integrally with the drive shaft rotate while the driven scroll body rotates synchronously with the drive scroll shaft via an interlocking mechanism.

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Номер записи: 5
28-11-2013 дата публикации

Scroll expander

Номер: US20130315767A1
Автор: Atsushi Unami, Tamotsu Fujioka
Принадлежит: Anest Iwata Corp

Provided is a double rotation type scroll expander, aiming at protecting a bearing that supports drive shaft a drive shaft and the like from the heat of a working medium when a working medium introduction hole is provided in the drive shaft. The working medium introduction hole is drilled into the drive shaft such that the high-temperature, high-pressure working medium is supplied to expansion chambers through the working medium introduction hole. An adiabatic sleeve that forms a part of the working medium introduction hole is attached to the drive shaft in an internal region of roller bearings that support the drive shaft and a driven scroll body rotatably. Heat transfer from the working medium to the roller bearings is suppressed by the adiabatic sleeve, whereby the roller bearings are prevented from deteriorating.

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Номер записи: 6
26-12-2013 дата публикации

Scroll compressor

Номер: US20130343941A1
Автор: Byeongchul Lee, Byoungchan KIM, Cheolhwan Kim, Seheon Choi
Принадлежит: LG ELECTRONICS INC

A scroll compressor includes an oil recollecting pump for recollecting oil discharged from a shell, thus to effectively recollect oil discharged out of the compressor. A differential pressure hole is formed at a position where it communicates with compression chambers after a suction completion timing such that oil stored in an inner space of the shell can be supplied into the compression chambers using pressure difference between the high-pressure inner space of the shell and the low-pressure compression chambers, resulting in allowing oil to be smoothly supplied to a compression unit even during low-speed driving of the compressor and preventing beforehand an occurrence of a suction loss due to oil.

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Номер записи: 7
13-02-2014 дата публикации

Rotary volumetric machine

Номер: US20140044580A1
Автор: Aimone Balbo Di Vinadio, Edoardo Pancaldi
Принадлежит: CAPTECH Srl

A rotary volumetric machine having a stationary structure; a rotor, which can turn with respect to the stationary structure about a principal axis of rotation; a work chamber formed within said rotor; a disk, which is housed in said work chamber and can turn with respect to the stationary structure about a secondary axis of rotation fixed with respect to said stationary structure, the secondary axis of rotation being inclined with respect to said principal axis of rotation, said disk having a radial through groove; a diaphragm, which is fixed with respect to said rotor, extends in said work chamber, and engages said radial groove of said disk; and an inlet opening and an outlet opening for a working fluid, which are formed in said rotor, communicate with said work chamber, and are located on opposite sides of said diaphragm.

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Номер записи: 8
05-01-2017 дата публикации

TROCHOID PUMP FOR TRANSFERRING HIGH-VISCOSITY LIQUID UNDER HIGH PRESSURE

Номер: US20170002810A1
Автор: EOM Boon Do, KIM Hee Kyun
Принадлежит:

Disclosed is a trochoid pump for transferring high-viscosity liquids under high pressure. The trochoid pump includes an idler coupled to an inner through-hole inside a housing to be rotated, a rotor inserted into an inside of the idler, and a shaft configured to rotate the rotor, wherein the idler is provided with an inner toothed groove, into which the rotor is inserted and which has a plurality of projecting teeth, and recessed grooves, which are recessed with a predetermined depth along an outer circumferential surface thereof in a circumferential direction. Unlike an existing gear pump or trochoid pump, the trochoid pump for transferring high-viscosity liquids can reduce a viscous friction force, and can reduce the driving power. 1. A trochoid pump comprising:an idler rotatably coupled to an inner through-hole on an inside of a housing, a rotor inserted into an inside of the idler, and a shaft rotating the rotor,wherein the rotor is inserted into the idler and the idler has an inner toothed groove having a plurality of projecting gear teeth formed thereon, and a recessed groove formed on an outer circumference with a predetermined depth in a circumferential direction.2. The trochoid pump according to claim 1 , wherein the at least one recessed groove is formed on a center portion of the outer circumference of the idler claim 1 , and front and rear circular grooves are formed at front and rear ends that come in contact with an end portion of the rotor on an outer circumference of the idler.3. The trochoid pump according to claim 2 , wherein the front and rear circular grooves are formed to be deeper than the recessed groove.4. The trochoid pump according to claim 1 , wherein the outer circumference of the idler is spaced apart from an inner circumference of the inner through-hole of the housing to form a gap between them.5. The trochoid pump according to claim 1 , wherein the rotor is constructed so that a plurality of gears are formed on an outer circumference ...

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Номер записи: 9
05-01-2017 дата публикации

Scroll compressor

Номер: US20170002816A1
Автор: Takashi Uekawa
Принадлежит: Daikin Industries Ltd

A scroll compressor includes a casing with an oil reservoir, fixed and movable scrolls, a crank shaft, and a housing having an upper bearing rotatably supporting the crank shaft. The crank shaft has an oil feed path and the housing has a crank chamber. An outer peripheral surface of the crank shaft has an annular groove, and a spiral groove. The housing has a bearing back-face passage connecting the crank chamber and the annular groove. If no oil is fed from the oil reservoir to the sliding surface of the crank shaft through the oil feed path during rotation of the crank shaft, oil in the crank chamber is fed to the upper bearing from the crank chamber through the bearing back-face passage and the annular groove due to a pump effect of the spiral groove.

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Номер записи: 10
07-01-2021 дата публикации

HYDRAULIC MOTOR SUBASSEMBLY KIT WITH CARRIER

Номер: US20210003128A1
Автор: CORNETT Kenneth T., CROSBY Michael T., KING Timothy E., PAINTER Brian T.
Принадлежит:

A carrier for a motor subassembly of a hydraulic motor is provided that enables multiple components of the motor subassembly to be temporarily bundled into a compact and easy-to-transport motor subassembly kit. The carrier is a non-hydraulically-functioning member that is configured to have one or more features that mimic a corresponding one or more features of a hydraulically-functioning motor housing to which motor subassembly is intended to be coupled for forming the hydraulic motor. The carrier may have a body with a recessed portion that is configured to receive and/or enclose one or more components of the motor subassembly, and which may cooperate with the one or more motor subassembly components to temporarily secure and bundle the motor subassembly as a compact kit, thereby facilitating transportation and handling of the subassembly components. 1. A motor subassembly kit for a hydraulic motor , the kit comprising:a hydraulically-operable motor subassembly having a plurality of motor components that are configured to be operably coupled to a hydraulically-operable motor housing for at least partially forming the hydraulic motor; anda non-hydraulically-operable carrier for carrying the motor subassembly;wherein the carrier cooperates with the motor subassembly to temporarily secure the plurality of motor components of the motor subassembly as a transportable bundle, andwherein the carrier has one or more portions that mimic a corresponding one or more portions of the hydraulically-operable motor housing, thereby facilitating transportation of the plurality of motor components in the transportable bundle.2. The motor subassembly kit according to claim 1 , wherein the carrier includes a body having a nose portion claim 1 , a base portion claim 1 , and an intermediate portion extending between the nose portion and the base portion;wherein the carrier has an opening in the base portion for receiving one or more of the plurality of motor components, andwherein the ...

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Номер записи: 11
13-01-2022 дата публикации

SCROLL COMPRESSOR

Номер: US20220010797A1
Автор: ISHIZONO Fumihiko, TAKAMURA Yuji, TATSUWAKI Kohei
Принадлежит:

A scroll compressor includes: a shell forming an outer case, the shell forming an oil reservoir in which lubricating oil is reserved; a fixed scroll stored in the shell; an orbiting scroll stored in the shell, the orbiting scroll forming a compression chamber together with the fixed scroll; a frame holding the orbiting scroll; a thrust plate disposed between the orbiting scroll and the frame; and a thrust oil return pipe fixed to the frame, the thrust oil return pipe being a pipe through which the lubricating oil flows to return to the oil reservoir, in which: a hole portion is formed on the thrust plate, the hole portion passing from a first surface portion to a second surface portion, the first surface portion slidably contacting with the orbiting scroll, the second surface portion facing the frame; and the thrust oil return pipe is inserted into the hole portion and is fit in the thrust plate, and an upper end portion of the thrust oil return pipe does not protrude from the first surface portion of the thrust plate. 1. A scroll compressor comprising:a shell forming an outer case, the shell forming an oil reservoir in which lubricating oil is reserved;a fixed scroll stored in the shell;an orbiting scroll stored in the shell, the orbiting scroll forming a compression chamber together with the fixed scroll;a frame holding the orbiting scroll;a thrust plate disposed between the orbiting scroll and the frame; anda thrust oil return pipe fixed to the frame, the thrust oil return pipe being a pipe through which the lubricating oil flows to return to the oil reservoir, wherein:a hole portion is formed on the thrust plate, the hole portion passing from a first surface portion to a second surface portion, the first surface portion slidably contacting with the orbiting scroll, the second surface portion facing the frame; andthe thrust oil return pipe is inserted into the hole portion and is fit in the thrust plate, and an upper end portion of the thrust oil return pipe does ...

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Номер записи: 12
11-01-2018 дата публикации

FUEL PUMP

Номер: US20180010606A1
Автор: FURUHASHI Daiji, SAKAI Hiromi
Принадлежит:

An outer gear and an inner gear expand and contract volume of pump chambers formed between both the gears, and rotate to suction fuel into the pump chambers and then discharge fuel from the pump chambers sequentially. The inner gear includes an insertion hole that is depressed along its axial direction. A joint member includes a main body portion that is fitted to a rotary shaft, a foot portion that extends from the main body portion along the axial direction and is inserted in the insertion hole with a clearance therebetween, and a protruding portion that protrudes from the foot portion toward a rotation progress side of the inner gear and has its width in the axial direction further narrowed toward a top portion of the protruding portion. 1. A fuel pump comprising:an outer gear that includes a plurality of internal teeth;an inner gear that includes a plurality of external teeth and is eccentric from the outer gear in an eccentric direction to be engaged with the outer gear;a pump housing that rotatably accommodates the outer gear and the inner gear;an electric motor that includes a rotary shaft which is rotary-driven; anda joint member that connects together the inner gear and the rotary shaft, wherein:the outer gear and the inner gear expand and contract volume of a plurality of pump chambers formed between both the gears, and rotate to suction fuel into the plurality of pump chambers and then discharge fuel from the plurality of pump chambers sequentially;the inner gear includes an insertion hole that is depressed along its axial direction; and a main body portion that is fitted to the rotary shaft;', 'a foot portion that extends from the main body portion along the axial direction and is inserted in the insertion hole with a clearance therebetween; and', 'a protruding portion that protrudes from the foot portion toward a rotation progress side of the inner gear and has its width in the axial direction further narrowed toward a top portion of the protruding ...

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Номер записи: 13
10-01-2019 дата публикации

PUMP WITH ROTOR HAVING ARCUATE SLOTS AND VANES

Номер: US20190010942A1
Автор: CLARK Tyler J. E., Patterson Albert
Принадлежит:

A pump includes a shaft to rotate about a longitudinal axis, a rotor, at least two arcuate slots extending continuously into and through the rotor, wherein each of the slots is curved along a longitudinal slot axis, and at least two arcuate vanes, each of the vanes being shaped to be slidably seated in one of the slots, each of the vanes being movable in the corresponding slot between an extended position with the external edge of the vane adjacent the interior sidewall of the housing, and a retracted position wherein the external edge of the vane does not extend beyond the cylindrical surface of the rotor. Each of the vanes is spaced from an adjacent vane about the rotor such that there is always at least one vane positioned between the fluid inlet and fluid outlet ports. 1. A rotary pump comprising:a shaft to rotate about a longitudinal axis;a rotor centrally secured to the shaft, the rotor having a body with spaced ends and a cylindrical surface extending between the spaced ends;a rotor disk secured to each end of the rotor and secured at a centre of the rotor disk to the shaft;a housing encasing the shaft, the rotor disks, and the rotor within an internal cavity, the housing having interior end walls and an interior sidewall, with fluid inlet and fluid outlet ports in the interior sidewall, a first section of the interior sidewall of the housing being cylindrical and curved with a constant radius over an angle of about approximately 180°, the first section being spaced a constant distance from confronting sections of the cylindrical surface of the rotor, and a second section of the interior sidewall of the housing extending between the extremities of the first section of the interior sidewall, the cylindrical surface of the rotor being proximal to the interior sidewall of the housing between the fluid inlet and fluid outlet ports about midway along the second section, the fluid inlet and fluid outlet ports being located in the second section of the interior ...

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Номер записи: 14
10-01-2019 дата публикации

COMPRESSOR HAVING IMPROVED DISCHARGE STRUCTURE

Номер: US20190010945A1
Автор: Choi Yong Kyu, Kim Cheol Hwan, Lee Howon
Принадлежит:

A scroll compressor is provided, that may include a connection groove to reduce discharge resistance. The scroll compressor may include a fixed scroll including a fixed end plate and a feed wrap and an orbiting scroll, rotating with respect to the fixed scroll and including an orbiting end plate and an orbiting wrap, and structure in which a connection groove having a concave groove shape provided at an inner surface of the fixed end plate to allow a refrigerant to flow through the connection groove depending on an overlapping state of the fixed wrap and the connection groove, thereby providing an effect of increasing opening efficiency of discharge holes at a beginning of discharge. 1. A scroll compressor , comprising:a fixed scroll including a fixed end plate and a fixed wrap; and a first compression chamber is formed between an outer surface of the fixed wrap and an inner surface of the orbiting wrap;', 'a second compression chamber is formed between an inner surface of the fixed wrap and an outer surface of the orbiting wrap;', 'the fixed end plate of the fixed scroll includes a first discharge inlet configured to discharge a refrigerant compressed in the first compression chamber and a second discharge inlet configured to discharge a refrigerant compressed in the second compression chamber;', 'a communication groove that connects the first discharge inlet and the second discharge inlet, and having a form of a recessed groove is formed in an inner surface of the fixed end plate; and', 'a refrigerant flows through the communication groove according to a state in which the orbiting wrap overlaps the communication groove., 'an orbiting scroll including an orbiting end plate and an orbiting wrap and configured to perform an orbiting movement about the fixed scroll, wherein;'}2. The scroll compressor of claim 1 , wherein the fixed end plate of the fixed scroll includes a discharge outlet at a position overlapping with any one of the first discharge inlet or the ...

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Номер записи: 15
19-01-2017 дата публикации

Gear pump and image recording apparatus

Номер: US20170015106A1
Автор: Masaaki Ando, Noritaka Mitsuo
Принадлежит: Seiko Epson Corp

To reduce frictional heat generated between a rotation shaft and a bearing portion in a gear pump in which the rotation shaft having a gear mounted thereon is received by the bearing portion and an image recording apparatus having the gear pump. Provided is a gear pump which has a rotation shaft, a bearing portion which receives the rotation shaft, and a gear which is mounted on the rotation shaft and rotates with the rotation shaft, in such a manner that the gear feeds liquid. Furthermore, at least either a concave portion or a convex portion is provided in at least either the rotation shaft or the bearing portion.

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Номер записи: 16
03-02-2022 дата публикации

Dry Dual-Scroll Vacuum Pump

Номер: US20220034321A1
Автор: Chen Guodong, Jiang Renpu, Xiong Shusheng
Принадлежит:

A dry dual-scroll vacuum pump includes a driving assembly and an upper cover located above the driving assembly, wherein the driving assembly includes an output shaft, and a movable disk is eccentrically arranged on the output shaft; two groups of first scroll teeth that are centrally symmetrical are arranged on a side of the movable disk that faces the upper cover; a fixed disk is arranged at a lower end of the upper cover, second scroll teeth that are in one-to-one correspondence with the first scroll teeth are arranged on the fixed disk, and the first scroll teeth are meshed with the second scroll teeth to form a compression cavity; and the upper cover is further provided with an air inlet and an air outlet, which correspond to the compression cavity. 11666246. A dry dual-scroll vacuum pump , characterized by comprising a driving assembly and an upper cover located above the driving assembly , wherein the driving assembly comprises an output shaft () , and a movable disk () eccentrically arranged on the output shaft (); two groups of first scroll teeth () that are centrally symmetrical are arranged on a side of the movable disk () that faces the upper cover;{'b': 4', '23', '24', '4', '24', '23', '5', '1, 'a fixed disk () is arranged at a lower end of the upper cover, second scroll teeth () that are in one-to-one correspondence with the first scroll teeth () are arranged on the fixed disk (), and the first scroll teeth () are meshed with the second scroll teeth () to form a compression cavity; and the upper cover is further provided with an air inlet () and an air outlet (), which correspond to the compression cavity.'}224232121244236. The dry dual-scroll vacuum pump according to claim 1 , characterized in that a tooth tip of each of the first scroll teeth () and the second scroll teeth () is provided with a sealing groove () claim 1 , the sealing groove () is internally provided with an elastic sealing material claim 1 , the first scroll teeth () and the fixed ...

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Номер записи: 17
03-02-2022 дата публикации

PUMPING ASSEMBLY, COMPRESSOR AND AIR CONDITIONING EQUIPMENT

Номер: US20220034323A1
Автор: DENG Liying, HU Yusheng, LIANG Shebing, WAN Pengkai, WEI Huijun, XU Jia, YANG Guomang
Принадлежит: GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI

The present disclosure provides a pumping assembly, a compressor and air conditioning equipment. The pumping assembly includes a first structural body, a rolling bearing assembly, a second structural body, a third structural body and a main shaft passing through the first structural body, the rolling bearing assembly, the second structural body and the third structural body. The pumping assembly includes: a first lubricating oil path passing through a second structural part, the sliding sheet backpressure cavity, a third structural part, a second structural part and a rolling body of the rolling bearing assembly; a second lubricating oil path passing through the sliding sheet backpressure cavity and a first pressure relieving groove of the first structural body; and a third lubricating oil path passing through the sliding sheet backpressure cavity, the first structural part and the rolling body of the rolling bearing assembly. 1. A pumping assembly , comprising a first structural body , a rolling bearing assembly , a second structural body , a third structural body and a main shaft , wherein the main shaft sequentially passes through the first structural body , the rolling bearing assembly , the second structural body and the third structural body , and the pumping assembly comprising a plurality of lubricating oil paths , wherein the plurality of lubricating oil paths at least comprises:a first lubricating oil path passing through the second structural body, a sliding sheet backpressure cavity of a rotor structure of the main shaft, the third structural body, the second structural body and a rolling body of the rolling bearing assembly;a second lubricating oil path passing through the sliding sheet backpressure cavity of the rotor structure of the main shaft and a first structural body pressure relieving groove of the first structural body; anda third lubricating oil path passing through the sliding sheet backpressure cavity of the rotor structure of the main shaft ...

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Номер записи: 18
18-01-2018 дата публикации

CYLINDER-ROTATION-TYPE COMPRESSOR

Номер: US20180017056A1
Автор: MURASE Yoshinori, Ogawa Hiroshi, Ohno Yuichi
Принадлежит:

A primary groove, into which a primary vane is slidably fitted, and a primary rotor-side suction passage, which conducts refrigerant of a shaft-side suction passage of a shaft to a primary compression chamber, are formed at a primary rotor. The primary groove is shaped into a form that extends from an inner peripheral side toward an outer peripheral side and extends toward a rear side with respect to a rotational direction, and the primary rotor-side suction passage is shaped into a form that extends from the inner peripheral side toward the outer peripheral side and extends and tilts toward a front side with respect to the rotational direction. A fluid outlet of the primary rotor-side suction passage opens at a location that is immediately after the primary groove on the rear side of the primary groove with respect to the rotational direction. 1. A cylinder-rotation-type compressor comprising:a cylinder that is shaped into a cylindrical tubular form and is rotatable about a central axis;a rotor that is shaped into a cylindrical tubular form and is placed in an inside of the cylinder, wherein the rotor is rotatable about an eccentric axis, which is eccentric to the central axis of the cylinder;a shaft that rotatably supports the rotor; anda vane that is shaped into a plate form and is slidably inserted into a groove formed in the rotor, while the vane partitions a compression chamber that is formed between an outer peripheral surface of the rotor and an inner peripheral surface of the cylinder, wherein:the cylinder and the rotor are synchronously rotatable;when the rotor is rotated, the vane is displaced such that an outer-peripheral-side end portion of the vane contacts the inner peripheral surface of the cylinder;a shaft-side suction passage, which conducts compression-subject fluid received from an outside, is formed in an inside of the shaft;a rotor-side suction passage, which conducts the compression-subject fluid outputted from the shaft-side suction passage ...

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Номер записи: 19
18-01-2018 дата публикации

SCREW COMPRESSOR

Номер: US20180017058A1
Автор: Miyamura Harunori, Shikano Shigeharu
Принадлежит:

A screw compressor includes a casing, a drive shaft, a screw rotor, a gate rotor, a slide valve, and a slide valve driving mechanism having a hydropneumatic cylinder. The drive shaft has one end supported via a bearing on a bearing holder held by the casing. The other end is coupled to an electric motor. A compression chamber is defined by the gate rotor meshing with a helical groove formed on the screw rotor. The hydropneumatic cylinder is located opposite to the screw rotor with respect to the bearing. The bearing holder has an outer peripheral surface configured as a guide surface guiding a sliding movement of the slide valve. The bearing holder has axial end portions. One of the axial end portions located opposite to the screw rotor constitutes a cylinder tube of the hydropneumatic cylinder to achieve integration of the bearing holder and the hydropneumatic cylinder. 1. A screw compressor comprising:a casing;a drive shaft having one end supported, via a bearing, on a bearing holder held by the casing, and an other end coupled to an electric motor;a screw rotor coupled to the drive shaft;a gate rotor defining a compression chamber in the casing by meshing with a helical groove formed on the screw rotor;a slide valve slidable in an axial direction of the screw rotor and capable of regulating an area of a discharge opening of the compression chamber; anda slide valve driving mechanism including a hydropneumatic cylinder configured to drive the slide valve,the hydropneumatic cylinder being located opposite to the screw rotor with respect to the bearing interposed therebetween, andthe bearing holder having an outer peripheral surface configured as a guide surface guiding a sliding movement of the slide valve,the bearing holder having axial end portions, with one of the axial end portions located opposite to the screw rotor constituting a cylinder tube of the hydropneumatic cylinder, thereby achieving integration of the bearing holder and the hydropneumatic cylinder.2 ...

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Номер записи: 20
21-01-2021 дата публикации

Scroll compressor

Номер: US20210017985A1
Автор: Changeol JO, Donghyun Sohn, Suchul Kim
Принадлежит: LG ELECTRONICS INC

A scroll compressor is provided in which a center of a back pressure chamber is eccentrically disposed relative to a center of a fixed scroll. For example, the center of the back pressure chamber may be moved towards a center of an orbiting scroll at a time of discharge, thereby preventing displacement of the fixed scroll and ensuring stability in orbital movement of the orbiting scroll.

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Номер записи: 21
16-01-2020 дата публикации

CLUTCHED VACUUM PUMP SYSTEM

Номер: US20200018312A1
Автор: BOYES Andrew M, COPPOLA Gianmarc, KIERAN Sean, ORR Kody, PIRES Julian
Принадлежит:

In an aspect a system is provided for generating vacuum in a vehicle. The system includes a vacuum pump, an engagement clutch, an actuator, and a torque limiting clutch. The e engagement clutch operatively connects a camshaft to the rotor. The actuator controls the clutch. The actuator is movable, based on air pressure in a vacuum conduit, between a low-pressure position in which the actuator causes the clutch to operatively disconnect the camshaft from the rotor, and a high-pressure position in which the actuator causes the clutch to operatively connect the camshaft to the rotor. The torque limiting clutch limits torque transfer to the rotor when the engagement clutch operatively connects the camshaft to the rotor. The system also provides control hysteresis. 1. A vacuum generating assembly , comprising:a rotary input member connectable to an engine rotary power takeoff;a vacuum pump having a rotor that is rotatable to generate a vacuum;a wrap spring clutch coupling the rotary input member and the vacuum pump rotor, wherein the wrap spring clutch is positionable in an engaged position, in which the wrap spring clutch operatively connects the rotary input member and the vacuum pump rotor, and a disengaged position, in which the wrap spring clutch operatively disconnects the rotary input member and the vacuum pump rotor; anda vacuum actuator connectable to a vacuum conduit and operatively connected to the wrap spring clutch, wherein the vacuum actuator is movable, based on air pressure in the vacuum conduit, between a low-pressure position in which the vacuum actuator positions the wrap spring clutch in the disengaged position, and a high-pressure position in which the vacuum actuator positions the wrap spring clutch in the engaged position.2. An assembly according to claim 1 , wherein the wrap spring clutch is biased towards the engaged position.3. An assembly according to claim 1 , wherein the rotary power take-off is a camshaft.4. An assembly according to claim 1 ...

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Номер записи: 22
16-01-2020 дата публикации

CHILLER MOTOR WITH COOLING FLOW PATH

Номер: US20200018527A1
Автор: Heisey Matthew L., Snell Paul W.
Принадлежит: Johnson Controls Technology Company

A cooling system for a motor to power a compressor in a vapor compression system is provided. The cooling system includes a housing with a cavity enclosing the motor and defining a central axis and fluid directing features extending into the cavity and oriented parallel to the central axis. The cooling system further includes a fluid circuit configured to circulate a cooling fluid between the housing and the motor. The fluid circuit includes a first cooling fluid path defined by directing features that cause a first portion of cooling fluid to travel around a first portion of the motor and a second cooling fluid path defined by fluid directing features that cause a second portion of cooling fluid to travel around a second portion of the motor. The second portion of the motor is located opposite the first portion. 1. A cooling system for a motor to power a compressor in a vapor compression system , the cooling system comprising: a cavity enclosing the motor and defining a central axis; and', 'a plurality of fluid directing features extending into the cavity and oriented parallel to the central axis; and, 'a housing comprising a first cooling fluid path defined at least partially by the plurality of fluid directing features that cause a first portion of cooling fluid to travel around a first portion of the motor, and', 'a second cooling fluid path defined at least partially by the plurality of fluid directing features that cause a second portion of cooling fluid to travel around a second portion of the motor, wherein the second portion of the motor is located opposite the first portion., 'a fluid circuit configured to circulate a cooling fluid between the housing and the motor, the fluid circuit comprising2. The cooling system of claim 1 , wherein the first cooling fluid path and the second cooling fluid path are serpentine-shaped.3. The cooling system of claim 1 , wherein the fluid circuit further comprises a first connection in the housing to receive cooling fluid ...

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Номер записи: 23
17-04-2014 дата публикации

Screw compressor

Номер: US20140105773A1
Автор: Holger TYCHSEN
Принадлежит: Johnson Controls Technology Co

A screw compressor includes a housing having an inlet for receiving gas to be compressed by the compressor and an outlet for discharging pressurized compressed gas. A pair of meshing threaded rotors, each rotor having an axis and being rotatably received in the housing, each rotor having a first end near the inlet and a second end near the outlet. A bearing rotatably carrying each rotor about its axis and positioned near the first end and the second end of each rotor. A conduit formed in the housing in selectable fluid communication with at least one bearing and a force generating source from a pressurized fluid source, the force generating source selectably providing a force in a radial direction relative to the axis of the at least one bearing.

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Номер записи: 24
25-01-2018 дата публикации

AUTOMATIC TRANSMISSION PUMP APPARATUS OR PUMP APPARATUS

Номер: US20180023563A1
Автор: Kumasaka Norikazu
Принадлежит: Hitachi Automotive Systems, Ltd.

The present invention provides a pump apparatus capable of preventing or reducing deterioration of efficiency of a pump. The pump apparatus includes a venturi portion provided on the way along a discharge passage. The venturi portion includes a small diameter portion having a smaller inner diameter than an inner diameter of the discharge passage from a discharge port to the venturi portion and an inner diameter gradually-increasing portion formed in such a manner that an inner diameter thereof gradually increases from the small diameter portion toward a downstream side of the discharge passage. The pump apparatus further includes a control valve configured to receive introduction of hydraulic fluid on an upstream side of the venturi portion and hydraulic fluid in the venturi portion. The control valve is configured to control a flow amount of hydraulic fluid to be supplied into an automatic transmission by switching a flow passage of the hydraulic fluid based on a differential pressure between a pressure on the upstream side of the venturi portion and a pressure in the venturi portion (). 1. An automatic transmission pump apparatus for supplying hydraulic fluid to an automatic transmission of a vehicle , the automatic transmission pump apparatus comprising:a pump housing including a pump element containing portion;a driving shaft pivotally supported on the pump housing;a pump element provided in the pump element containing portion and configured to be rotationally driven by the driving shaft, the pump element forming a plurality of pump chambers around the driving shaft;an intake port formed at the pump housing and opened to an intake region where a volume of a pump chamber increases according to a rotation of the driving shaft among the plurality of pump chambers;a discharge port formed at the pump housing and opened to a discharge region where the volume of the pump chamber reduces according to the rotation of the driving shaft among the plurality of pump chambers ...

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Номер записи: 25
25-01-2018 дата публикации

Pump assembly having integrated controller and motor with internal active cooling

Номер: US20180023565A1
Автор: Liping Wang, Richard Muizelaar
Принадлежит: Stackpole International Engineered Products Ltd

A pump assembly and a method for cooling the same are disclosed. The pump assembly includes a pump, a controller, and a driven electric motor. The pump and the electric motor are on opposing axial sides of the controller. The assembly also has a heat conductive plate positioned between the pump and the controller that conducts heat from the controller. A transfer passage is provided for receiving pressurized fluid output from the pump and to direct the fluid along and in contact with the heat conductive plate to conduct heat therefrom into the pressurized fluid. An outlet passage communicates with the assembly outlet to discharge the pressurized fluid.

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Номер записи: 26
25-01-2018 дата публикации

OIL-FLOODED SCREW COMPRESSOR SYSTEM AND METHOD FOR MODIFYING THE SAME

Номер: US20180023571A1
Автор: ENDO Yasuaki
Принадлежит: MAYEKAWA MFG. CO., LTD.

An oil-flooded screw compressor system includes: a first lubricating oil supply system for supplying lubricating oil to screw parts; and a second lubricating oil supply system for supplying the lubricating oil to a bearing. The first lubricating oil supply system includes: a gas-liquid separator; a first supply flow passage; and a first supply path. The second lubricating oil supply system includes: a lubricating oil reservoir; a second supply flow passage; a second supply path; a first discharge flow passage; and a discharge path. It is possible to suppress dissolution of a gas to be compressed in lubricating oil and to suppress damage to a bearing due to deterioration of the performance of the lubricating oil, even in a case where the gas to be compressed is compatible with the lubricating oil. 1. An oil-flooded screw compressor system for compressing a gas to be compressed which is a compatible gas with lubricating oil , comprising: a male screw rotor and a female screw rotor each having a screw part and shaft portions formed on both ends of the screw part;', 'a housing having a screw chamber accommodating the screw parts inside and a bearing chamber accommodating the shaft portions inside; and', 'a bearing disposed in the bearing chamber, for rotatably supporting the shaft portions;, 'a screw compressor which includesa first lubricating oil supply system for supplying lubricating oil to the screw parts; anda second lubricating oil supply system for supplying the lubricating oil to the bearing, a gas-liquid separator configured to introduce discharge gas of the screw compressor therein and to separate the lubricating oil from the discharge gas;', 'a first supply flow passage formed through a housing wall which constitutes the housing, the first supply flow passage having an opening on an outer surface of the housing wall and being in communication with the screw chamber; and', 'a first supply path connected to a lubricating-oil storage region of the gas-liquid ...

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Номер записи: 27
10-02-2022 дата публикации

COMPRESSOR OIL MANAGEMENT SYSTEM

Номер: US20220042509A1
Автор: LIANG Sheng, NOHALES HERRAIZ Jesus Angel, SU Xiaogeng
Принадлежит: EMERSON CLIMATE TECHNOLOGIES, INC.

A compressor () includes a compression mechanism () and a driveshaft () that drives the compression mechanism (). The driveshaft () may include a first axially extending passage (), a second axially extending passage (), and a lubricant distribution passage (). The first and second axially extending passages () may be radially offset from each other and may intersect each other at an overlap region (). The first and second axially extending passages () are in fluid communication with each other at the overlap region (). The lubricant distribution passage () may extend from the first axially extending passage () through an outer diametrical surface of the driveshaft (). The lubricant distribution passage () may be disposed at a first axial distance (D) from a first axial end () of the driveshaft (). A first axial end of the overlap region () may be disposed at a second axial distance (D) from the first axial end () of the drive shaft (). The first axial distance (D) is greater than the second axial distance (D). 1. A compressor comprising:a compression mechanism; anda driveshaft driving the compression mechanism, the driveshaft including a first axially extending passage, a second axially extending passage, and a lubricant distribution passage, wherein:the first axially extending passage and the second axially extending passage are radially offset from each other and intersect each other at an overlap region,the first and second axially extending passages are in fluid communication with each other at the overlap region,the lubricant distribution passage extends from the first axially extending passage through an outer diametrical surface of the driveshaft,the lubricant distribution passage is disposed at a first axial distance from a first axial end of the driveshaft,a first axial end of the overlap region is disposed at a second axial distance from the first axial end of the driveshaft,the first axial distance is greater than the second axial distance.2. The ...

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Номер записи: 28
24-01-2019 дата публикации

Hermetic compressor

Номер: US20190024650A1
Автор: Jeong-Bae Lee, Ki-Chul Song
Принадлежит: SAMSUNG ELECTRONICS CO LTD

A hermetic compressor includes an airtight case a lower portion of which oil is stored in; a frame received in the airtight case; a compression mechanism disposed in the frame and to compress a refrigerant; a motor mechanism including a stator fixed to the frame and a rotor to rotate inside the stator; a rotation shaft coupled to the rotor and provided with a cavity at a lower portion of the rotation shaft, wherein the rotation shaft rotates together with the rotor and operates the compression mechanism; a stationary shaft inserted into the cavity of the rotation shaft, fixed to the airtight case, and provided with a helical groove formed on an outer circumferential surface; and an oil raising member fixed to the cavity of the rotation shaft and configured to surround the stationary shaft. The oil raising member raises the oil stored in the airtight case.

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Номер записи: 29
24-01-2019 дата публикации

MAGNETICALLY ENGAGED PUMP

Номер: US20190024660A1
Автор: BLANKEMEIER WILLIAM, LEOPOLD CHRISTOPHER, LIBBY LOREN MICHAEL, Ortega Nicholas William, SANDORE BRIAN JAMES, SCHWARTZ ROBERT GEORGE, SHAFER CLARK
Принадлежит: WILDEN PUMP AND ENGINEERING LLC

A magnetically engaged pump includes a pump housing with a rotatable magnetic drive assembly, a cylindrical canister and a rotatable driven magnet assembly. This magnetic coupling is associated with a pump rotor and a laterally positioned gear wheel to define a gear pump. This magnetic coupling is alternatively associated with a pump rotor with an impeller to define a centrifugal pump. Either pump includes a stationary shaft to mount the driven magnet assembly and pump rotor. A rotatable carrier with bushings and thrust bushings coaxially supports the rotatable driven magnet assembly and pump rotor. 1. A magnetically engaged pump comprisinga pump housing including a shaft in the housing;a magnetic coupling in the pump housing including a rotatable magnetic drive, a rotatable driven magnet assembly inwardly of the rotatable magnetic drive and a cylindrical canister extending between the rotatable magnetic drive and the rotatable driven magnet assembly, the rotatable driven magnet assembly having a concentric cavity;a pump rotor rotatable with the rotatable driven magnet assembly and including an axial passage;an inner impeller wheel rotatable with the rotatable driven magnet assembly and axially removable through the pump rotor, the pump rotor including an annular impeller wheel having continuity of flow with the inner impeller wheel;a carrier including a bore rotatably disposed about the shaft and at least one plain bushing in the bore bearing on the shaft, the carrier being within the concentric cavity and fitting through the axial passage for removal from the pump with the pump rotor engaged with the rotatable driven magnet assembly and the rotatable driven magnet assembly magnetically engaged with the rotatable magnetic drive.2. The magnetically engaged pump of claim 1 , the rotatable carrier being axially removable through the pump rotor from the rotatable driven magnet assembly with the inner impeller wheel and the shaft.3. The magnetically engaged pump of ...

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Номер записи: 30
24-01-2019 дата публикации

OIL-FREE SCREW COMPRESSOR

Номер: US20190024663A1
Автор: INAZAKI Mio, MIYATAKE Toshiyuki, Yano Yoshio, YOSHIMURA Shoji
Принадлежит: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)

The oil-free screw compressor includes: a screw rotor, a bearing configured to support a rotor shaft, a shaft seal device including an oil seal arranged at a position closer to the bearing and a gas seal arranged on at a position closer to the rotor chamber, an atmosphere communication space communicating with an atmosphere communication hole, and an oil return groove including a return inclined surface inclined so as to expand in diameter radially outward from a gas seal-side end to an oil seal-side end. The oil seal portion is a viscoseal including a spiral groove portion. An inner peripheral surface of the oil seal includes an inner peripheral boundary portion that defines a part of the atmosphere communication space, on a side closer to the bearing in the atmosphere communication hole. The oil seal-side end is arranged in a vicinity of the inner peripheral boundary portion and at a position closer to the bearing. 1. An oil-free screw compressor comprising:a screw rotor accommodated in a rotor chamber of a casing of a compressor;a bearing configured to support a rotor shaft of the screw rotor;a shaft seal device arranged in a shaft seal space of the casing, the shaft seal space being formed between the rotor chamber and the bearing, the shaft seal device including an oil seal arranged at a position closer to the bearing and a gas seal arranged at a position closer to the rotor chamber;an atmosphere communication space formed between an oil seal portion formed in any one of the oil seal and the rotor shaft and a gas seal portion of the gas seal, the atmosphere communication space communicating with an atmosphere communication hole; andan oil return groove formed on the rotor shaft, the oil return groove including a return inclined surface inclined so as to expand in diameter radially outward from a gas seal-side end to an oil seal-side end of the return inclined surface,wherein the oil seal portion is a viscoseal including a spiral groove portion,wherein an inner ...

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Номер записи: 31
24-01-2019 дата публикации

COMPRESSOR HAVING CENTRIFUGATION STRUCTURE FOR SUPPLYING OIL

Номер: US20190024664A1
Автор: Choi Yong Kyu, Kim Cheol Hwan, Lee Byeongchul, Lee Kangwook
Принадлежит:

A scroll compressor is provided which is capable of supplying oil stored in an oil storage chamber upward through a rotary shaft to lubricate a bearing portion. The scroll compressor may include a casing in which oil is stored in an oil storage chamber formed at a lower portion of the casing, a drive motor provided in an inner space of the casing, a rotary shaft coupled to the drive motor and including an oil supply path configured to guide the oil stored in the oil storage chamber and at least one oil hole that passes from the oil supply path to an outer circumferential surface of the rotary shall a main frame coupled to the rotary shaft and provided under the drive motor, a fixed scroll coupled to the rotary shaft and provided under the main frame, and an orbiting scroll provided between the main frame and the fixed scroll, into which the rotary shaft is inserted and to which the rotary shaft is eccentrically coupled, the orbiting scroll performing an orbiting movement to form a compression chamber with the fixed scroll. The oil guided upward through the oil supply path may be discharged through the at least one oil hole and supplied to the outer circumferential surface of the rotary shaft. 1. A scroll compressor , comprising:a casing in which oil is stored in an oil storage chamber formed at a lower portion of the casing;a drive motor provided in an inner space of the casing;a rotary shaft coupled to the drive motor and including an oil supply path configured to guide the oil stored in the oil storage chamber upward and at least one oil hole that passes from the oil supply path to an outer circumferential surface of the rotary shaft;a main frame coupled to the rotary shaft and provided under the drive motor;a fixed scroll coupled to the rotary shaft and provided under the main frame; andan orbiting scroll provided between the main frame and the fixed scroll and into which the rotary shaft is inserted and to which the rotary shaft is eccentrically coupled, the ...

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Номер записи: 32
28-01-2021 дата публикации

MOTOR-DRIVEN ROOTS PUMP

Номер: US20210025388A1
Автор: Hirano Takayuki, KASHIWA Shintaro, MASAKI Daisuke, SHINODA Fumiya, TAKANI Naoki
Принадлежит: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI

A motor-driven Roots pump includes a housing, a drive shaft and a driven shaft that have axial lines parallel with each other, and a gear chamber. The housing includes a first partition that has a first defining surface, a second partition having a second defining surface, and a relief recess. An addendum circle of the drive gear and an addendum circle of the driven gear intersect with each other at a first intersection point. A plane that includes both the axial lines is defined as an imaginary plane. The first intersection point is located on a side of the imaginary plane on which the drive gear and the driven gear start meshing with each other. An opening of the relief recess is opposed to the first intersection point and is arranged in a region on a side of the imaginary plane on which the first intersection point is located. 1. A motor-driven Roots pump , comprising:a housing;a drive shaft and a driven shaft that are rotationally supported by the housing, the drive shaft and the driven shaft having axial lines that are parallel with each other;a drive gear that is fixed to the drive shaft;a driven gear that is fixed to the driven shaft and meshes with the drive gear;a drive rotor that is provided on the drive shaft;a driven rotor that is provided on the driven shaft and meshes with the drive rotor;an electric motor that is configured to rotate the drive shaft;a motor chamber that is defined in the housing and accommodates the electric motor;a gear chamber that is defined in the housing and accommodates the drive gear and the driven gear, oil being sealed in the gear chamber; anda rotor chamber that is defined in the housing and accommodates the drive rotor and the driven rotor, whereinthe motor chamber, the gear chamber, and the rotor chamber are arranged in order along the axial line, a first partition that separates the gear chamber and the motor chamber from each other in an axial direction of the drive shaft and includes a first defining surface that ...

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Номер записи: 33
17-02-2022 дата публикации

Controllable Screw Spindle Pump

Номер: US20220049697A1
Автор: Pawellek Franz
Принадлежит:

A controllable screw spindle pump for the lubricating oil supply of an internal combustion engine comprises a pump housing (), in which a throttle chamber () and a control chamber () are configured which are in contact with the lubricating oil to be conveyed; wherein the throttle chamber () is arranged between the pump inlet () and the spindle chamber (), and the throttle chamber () comprises a throttle valve (), by way of which a throughflow cross section of a conveying stream can be set; and the control chamber () comprises a hydraulic control valve () with a piston () which responds to a hydraulic control pressure (p p) in the control chamber (), and the control chamber () is oriented parallel to the spindle chamber () in relation to an actuating travel of the piston (); and a valve body () of the throttle valve () is coupled to the piston () of the hydraulic control valve (). 17-. (canceled)8. A controllable screw pump for supplying lubrication oil to a combustion engine , comprising:a pump housing with a spindle chamber as well as a pump inlet and a pump outlet communicating with the spindle chamber;at least two screw spindles rotatably accommodated in the spindle chamber, the screw spindles being driven by the combustion engine; whereininside the pump housing, a throttle chamber and a control chamber are provided, which are in contact with the lubrication oil to be conveyed; whereinthe throttle chamber is situated between the pump inlet and the spindle chamber, and the throttle chamber includes a throttle valve, via which a flow cross-section of a delivery flow is settable;the control chamber includes a hydraulic regulating valve with a piston that responds to a hydraulic control pressure inside the control chamber, and the control chamber is arranged in parallel to the spindle chamber with reference to a displacement of the piston; anda valve body of the throttle valve is coupled with the piston of the hydraulic regulating valve.9. The controllable screw pump ...

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Номер записи: 34
17-02-2022 дата публикации

VANE PUMP DEVICE

Номер: US20220049698A1
Автор: NISHIKAWA Toshio, TAGA Naoya
Принадлежит: Hitachi Astemo, Ltd.

A vane pump includes: a rotor configured to rotate under rotational force from a rotary shaft while supporting multiple vanes and including a curved surface portion with an arc shape centered on the rotary shaft and a rotor recess depressed from the curved surface portion toward a rotation center; a cam ring disposed so as to surround the rotor and including an inner peripheral surface facing the curved surface portion of the rotor; and an inner plate disposed on one end of the cam ring in an axial direction of the rotary shaft so as to cover an opening of the cam ring and including a suction inner recess depressed toward the rotation center relative to the curved surface portion of the rotor. 1. A vane pump device comprising:a rotor configured to rotate under rotational force from a rotary shaft while supporting a plurality of vanes, the rotor including a curved surface portion with an arc shape centered on the rotary shaft, the rotor including a first recess depressed from the curved surface portion toward a rotation center;a cam ring disposed so as to surround the rotor, the cam ring including an inner peripheral surface facing the curved surface portion of the rotor; anda one side member disposed on one end of the cam ring in an axial direction of the rotary shaft so as to cover an opening of the cam ring, the one side member including a second recess depressed toward the rotation center relative to the curved surface portion of the rotor.2. The vane pump device according to claim 1 , whereinthe one side member includes an inner portion that constitutes a portion of a suction port on a side thereof closer to the rotation center, the suction port being configured to suction a working fluid into a pump chamber defined by an outer peripheral surface of the rotor, the inner peripheral surface of the cam ring, and two adjacent vanes of the plurality of vanes, andthe second recess is a portion that is a part of the inner portion and depressed toward the rotation ...

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Номер записи: 35
31-01-2019 дата публикации

SCROLL COMPRESSOR SHAFT

Номер: US20190032664A1
Автор: BENCO Michael G., Crum Daniel R., Hansen George, Raymond Kenneth Andrew
Принадлежит:

A crankshaft assembly for a scroll compressor is disclosed. The crankshaft assembly includes a crankpin having a plurality of apertures therethrough. A crankshaft body has an aperture therethrough. The aperture of the crankshaft and one of the plurality of apertures of the crankpin being aligned when in an assembled state such that in operation fluid flows between the aperture of the crankshaft body and the one of the plurality of apertures of the crankpin. The crankshaft body includes a second aperture aligned with a second of the plurality of apertures of the crankpin. The crankpin and the crankshaft body are separate members. A fastener extends through the second of the plurality of apertures of the crankpin and into the second aperture of the crankshaft body to secure the crankpin and the crankshaft body together in the assembled state. 1. A crankshaft assembly for a scroll compressor , comprising:a crankpin having a plurality of apertures therethrough;a crankshaft body having an aperture therethrough, the aperture of the crankshaft and one of the plurality of apertures of the crankpin being aligned when in an assembled state such that in operation fluid flows from the aperture of the crankshaft body and the one of the plurality of apertures of the crankpin, the crankshaft body including a second aperture, the second aperture of the crankshaft body being aligned with a second of the plurality of apertures of the crankpin, wherein the crankpin and the crankshaft body are separate members; anda fastener, extending through the second of the plurality of apertures of the crankpin and into the second aperture of the crankshaft body to secure the crankpin and the crankshaft body together in the assembled state.2. The crankshaft assembly according to claim 1 , further comprising a plurality of aligning members and a plurality of alignment apertures in the crankpin and the crankshaft body to align the crankpin and the crankshaft body when assembling the crankshaft ...

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Номер записи: 36
04-02-2021 дата публикации

Co-rotating scroll compressor and assembly method therefor

Номер: US20210033093A1
Автор: Hirohumi Hirata, Keita KITAGUCHI, Makoto Takeuchi, Takahide Ito, Takuma YAMASHITA
Принадлежит: Mitsubishi Heavy Industries Ltd

Provided is a co-rotating scroll compressor comprising a synchronous drive mechanism that can achieve a long life. The compressor comprises a driving side scroll member ( 90 ) driven to rotate about a driving side rotation axis CL 1, a driven side scroll member ( 70 ) driven to rotate about a driven side rotation axis CL 2, a hollowed drive shaft ( 6 ) that is connected to the driving side scroll member ( 90 ), and driven by a motor ( 5 ) to rotate, and a driven shaft ( 20 ) that is disposed inside the drive shaft ( 6 ), and has one end connected to the drive shaft ( 6 ) via a first flexible coupling ( 21 ) and the other end connected to the driven side scroll member ( 70 ) via a second flexible coupling ( 22 ).

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Номер записи: 37
08-02-2018 дата публикации

Rotating cylinder type compressor

Номер: US20180038372A1
Автор: Hiroshi Ogawa, Kazuhide Uchida, Yoshinori Murase, Yuichi Ohno
Принадлежит: Denso Corp, Soken Inc

A rotating cylinder type compressor includes: a cylinder having a cylindrical shape and rotating about a central axis; a first rotor and a second rotor each having a cylindrical shape and rotating about an eccentric axis eccentric to the central axis of the cylinder; a shaft; a first vane; and a second vane. The first vane is slidably fitted to a first groove portion defined in the first rotor to define a first compression chamber. The second vane is slidably fitted to a second groove portion defined in the second rotor to define a second compression chamber. The first rotor and the second rotor are arranged in an extending direction of the central axis of the cylinder.

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Номер записи: 38
24-02-2022 дата публикации

SCROLL COMPRESSOR

Номер: US20220056910A1
Автор: Choi Jungsun, Lee Kangwook, LEE Kyungho
Принадлежит:

A scroll compressor according to the present disclosure includes a fixed scroll, an orbiting scroll forming first and compression chambers with the fixed scroll, first and second compression chamber oil supply holes formed through the orbiting scroll to communicate with the first compression chamber and the second compression chamber, respectively, wherein when a section in which the first compression chamber oil supply hole is opened toward the first compression chamber is a first oil supply section and a section in which the second compression chamber oil supply hole is opened toward the second compression chamber, a non-overlap section between the first oil supply section and the second oil supply section may be longer than an overlap section between the first oil supply section and the second oil supply section, so as to prevent communication between the first and second compression chambers, thereby suppressing leakage between the compression chambers. 1. A scroll compressor comprising:a casing;a driving motor provided in the casing;a fixed scroll disposed at a side of the driving motor, the fixed scroll including a fixed end plate and a fixed wrap positioned at the fixed end plate;an orbiting scroll including (i) an orbiting end plate facing the fixed end plate, and (ii) an orbiting wrap positioned at the orbiting end plate and configured to be engaged with the fixed wrap to define a first compression chamber and a second compression chamber;a first compression chamber oil supply hole that is defined at the orbiting end plate and configured to be in fluid communication with the first compression chamber; anda second compression chamber oil supply hole that is defined at the orbiting end plate and configured to be in fluid communication with the second compression chamber,wherein the first compression chamber oil supply hole is configured to be opened toward the first compression chamber during a first oil supply stage,wherein the second compression chamber oil ...

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Номер записи: 39
06-02-2020 дата публикации

LIQUID REFRIGERANT PUMP

Номер: US20200040892A1
Автор: Dieckmann John
Принадлежит:

A pump as provided includes an inlet, an outlet, and a scroll pumping element. The scroll pumping element includes a fixed scroll component having one or more fixed scrolls and orbiting scroll component having one or more orbiting scrolls for fluid pumping. The fixed scroll component and the orbiting scroll component are arranged so as to be capable of providing pressurized fluid to a thrust bearing and prevent contact between the fixed scroll component and the orbiting scroll component. 1. A pump , comprising:an inlet, an outlet, and a scroll pumping element, wherein said scroll pumping element comprises:a fixed scroll component having one or more fixed scrolls and orbiting scroll component having one or more orbiting scrolls for fluid pumping wherein said fixed scroll component and said orbiting scroll component are arranged so as to be capable of providing pressurized fluid to a thrust bearing and prevent contact between said fixed scroll component and said orbiting scroll component.2. The pump of wherein a wrap length of said one or more orbiting scrolls is 0.75 wraps to 1.25 wraps long claim 1 , and a wrap length of said one or more fixed scrolls is 1.75 wraps to 2.25 wraps long.3. The pump of wherein a wrap length of said one or more orbiting scrolls is one wrap long and a wrap length of said one or more fixed scrolls is two wraps long.4. The pump of claim 1 , further comprising an Oldham coupling associated with said orbiting scroll component.5. The pump of claim 4 , wherein said Oldham coupling comprises a wear-resistant coating.6. The pump of claim 5 , wherein said wear-resistant coating is hard anodized aluminum.7. The pump of claim 1 , further comprising an orbital drive mechanism in fluid communication with said outlet claim 1 , said orbital drive mechanism comprising a drive shaft claim 1 , two drive shaft bearings that support said drive shaft claim 1 , and a radially compliant crank mechanism associated with said drive shaft.8. The pump of claim 7 , ...

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Номер записи: 40
06-02-2020 дата публикации

Rotor Pair for a Compression Block of a Screw Machine

Номер: US20200040894A1
Автор: Weih Gerald
Принадлежит:

The invention relates to a rotor pair for a compressor block of a screw machine, wherein the a rotor pair comprises a secondary rotor that rotates about a first axis and a main rotor that rotates about a second axis, wherein the number of teeth of the main rotor is 3 and the number of teeth of the secondary rotor is 4. The relative profile depth of the secondary rotor is at least 0.5, preferably at least 0.515, and at most 0.65, preferably at most 0.595. rk1 is an addendum circle radius drawn around the outer circumference of the secondary rotor and rf1 is a dedendum circle radius starting at the profile base of the secondary rotor, wherein the ratio of the axis distance of the first axis from the second axis and the addendum circle radius rk1 is at least 1.636, and at most 1.8, preferably at most 1.733. 2. The rotor pair according to claim 1 , wherein in a transverse sectional view claim 1 , circular arcs B claim 1 , B claim 1 , Brunning within a secondary rotor tooth are defined claim 1 , a common centre point of which is the first axis claim 1 , wherein a radius rof Bhas a value r=rf+0.25*(rk−rf) claim 1 , a radius rof Bhas a value r=rf+0.5*(rk−rf) claim 1 , and a radius rof Bhas the value r=rf+0.75*(rk−rf) claim 1 , and wherein the circular arcs B claim 1 , B claim 1 , Bare each delimited by a leading tooth flank Fand trailing tooth flank F claim 1 , wherein tooth thickness ratios are defined as ratios of arc lengths b claim 1 , b claim 1 , bof the circular arcs B claim 1 , B claim 1 , Bwith ε=b/band 0.75≤ε≤50.85.312512552115221. The rotor pair according to claim 1 , wherein in a transverse sectional view claim 1 , foot points F and F are defined between an observed tooth of the secondary rotor and a respectively adjacent tooth of the secondary rotor and an apex point F is defined at the radially outermost point of the tooth claim 1 , wherein a triangle Dis defined by F claim 1 , F and F and wherein in a radially outer region claim 1 , the tooth projects beyond ...

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Номер записи: 41
18-02-2021 дата публикации

SPLIT POWER GEROTOR PUMP

Номер: US20210048022A1
Автор: DeHoff Kyle, HEMPHILL Jeffrey, Hixenbaugh Joshua, Sturgin Todd
Принадлежит:

A gerotor pump includes an inner gerotor, a wobble cancellation element, and an outer gerotor disposed radially between the inner gerotor and the wobble cancellation element. The inner gerotor includes a first outer peripheral surface with n first lobes equally spaced from one another in a circumferential direction, and n first depressions, each disposed between an adjacent pair of first lobes. The inner gerotor and the wobble cancellation element are coaxial. The wobble cancellation element includes a first inner peripheral surface with n+1 second lobes equally spaced from one another in the circumferential direction, and n+1 arcuate surfaces, each arranged between an adjacent pair of second lobes. The outer gerotor includes a second outer peripheral surface including n+1 outer depressions complementary to and arranged to engage the second lobes, and a second inner peripheral surface comprising n+1 inner depressions complementary to and arranged to engage the first lobes. 1. A gerotor pump , comprising: a first rotational axis; and', n first lobes equally spaced from one another in a circumferential direction; and', 'n first depressions, each disposed between an adjacent pair of first lobes;, 'a first outer peripheral surface, comprising], 'an inner gerotor, comprising a second rotational axis aligned with the first rotational axis such that the inner gerotor and the wobble cancellation element are coaxial; and', n+1 second lobes equally spaced from one another in the circumferential direction; and', 'n+1 arcuate surfaces, each arranged between an adjacent pair of second lobes; and, 'a first inner peripheral surface, comprising], 'a wobble cancellation element, comprising a second outer peripheral surface comprising n+1 outer depressions complementary to and arranged to engage the second lobes; and', 'a second inner peripheral surface comprising n+1 inner depressions complementary to and arranged to engage the first lobes., 'an outer gerotor disposed radially ...

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Номер записи: 42
16-02-2017 дата публикации

Fluid Delivery System With A Shaft Having A Through-Passage

Номер: US20170045046A1
Автор: Afshari Thomas
Принадлежит:

A fluid delivery system having at least one fluid storage device and a pump with at least one fluid driver with a flow-through shaft that has a through-passage. The pump includes a casing, and at least one fluid driver having a prime mover and at least one fluid displacement member. A shaft of the prime mover and/or a shaft of the fluid displacement member and/or a common shaft of the prime mover/fluid displacement member (depending on the configuration of the pump) is a flow-through shaft with a through-passage configuration that allows fluid communication between at least one port of the pump and the at least one fluid storage device. 1. A pump comprising:a casing defining an interior volume, the casing including a first port in fluid communication with the interior volume, and a second port in fluid communication with the interior volume;a first gear disposed within the interior volume, the first gear having a first gear body and a plurality of first gear teeth;a second gear disposed within the interior volume, the second gear having a second gear body and a plurality of second gear teeth projecting radially outwardly from the second gear body, the second gear is disposed such that a second face of at least one tooth of the plurality of second gear teeth aligns with a first face of at least one tooth of the plurality of first gear teeth;a first motor that rotates the first gear about a first axial centerline of the first gear in a first direction to transfer a fluid from the first port to the second port along a first flow path;a second motor that rotates the second gear, independently of the first motor, about a second axial centerline of the second gear in a second direction to contact the second face with the first face and to transfer the fluid from the first port to the second port along a second flow path; andat least one flow-through shaft disposed in at least one of the first motor, the second motor, the first gear and the second gear, each of the at ...

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Номер записи: 43
16-02-2017 дата публикации

ROTOR PAIR FOR A COMPRESSION BLOCK OF A SCREW MACHINE

Номер: US20170045050A1
Автор: Weih Gerald
Принадлежит:

The invention relates to a rotor pair for a compressor block of a screw machine, wherein the a rotor pair comprises a secondary rotor that rotates about a first axis and a main rotor that rotates about a second axis, wherein the number of teeth of the main rotor is 3 and the number of teeth of the secondary rotor is 4. The relative profile depth of the secondary rotor is at least 0.5, preferably at least 0.515, and at most 0.65, preferably at most 0.595. rk1 is an addendum circle radius drawn around the outer circumference of the secondary rotor and rf1 is a dedendum circle radius starting at the profile base of the secondary rotor, wherein the ratio of the axis distance of the first axis from the second axis and the addendum circle radius rk1 is at least 1.636, and at most 1.8, preferably at most 1.733. 21. The rotor pair according to claim 1 , wherein in a transverse sectional view claim 1 , circular arcs B claim 1 , B claim 1 , Brunning within a secondary rotor tooth are defined claim 1 , a common centre point of which is given by an axis C claim 1 , wherein a radius rof Ba the value r=rf+025*(rk−rf) claim 1 , the radius rof Bhas a value r=rf+0.5*(rk−rf) claim 1 , and a radius rof Bhas a value r=rf+0.75*(rk−rf) claim 1 , and wherein the circular arcs B claim 1 , B claim 1 , Bare each delimited by the leading tooth flank Fand trailing tooth flank F claim 1 , wherein tooth thickness ratios are defined as ratios of arc lengths b claim 1 , b claim 1 , bof the circular arcs B claim 1 , B claim 1 , Bwith ε=b/band ε=b/bwherein: 0.65≦ε<0.1 and/or 0.50≦ε≦0.85 claim 1 , preferably 0.80≦ε<1.0 and/or 0.50≦ε≦0.79.312512552115221. The rotor pair according to claim 1 , herein in a transverse sectional view claim 1 , foot points F and F are defined between an observed tooth of the secondary rotor and a respectively adjacent tooth of the secondary rotor and an apex point F is defined at a radially outermost point of the tooth claim 1 , wherein a triangle D claim 1 , is defined by ...

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Номер записи: 44
03-03-2022 дата публикации

Scroll compressor and refrigeration apparatus including same

Номер: US20220065250A1
Автор: Kenji Nagahara
Принадлежит: Daikin Industries Ltd

A scroll compressor includes a casing, compression mechanism housed in the casing, and drive shaft. The compression mechanism includes fixed and movable scrolls, and a housing. The housing includes a bearing portion configured to rotatably support the drive shaft, a body portion continuous with the bearing portion and extending radially outward, a pressing portion provided radially outside the body portion to press the casing, and a supporting portion extending from a face of the body portion near the fixed scroll. An end face of the supporting portion near the fixed scroll is a fastening face to which the fixed scroll is fastened. A gap is formed between an inner peripheral surface of the casing and outer peripheral surfaces of the body and supporting portions. An axial length of the gap is greater than or equal to an axial length of an inner peripheral surface of the supporting portion.

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Номер записи: 45
03-03-2022 дата публикации

Direct drive refrigerant screw compressor with refrigerant lubricated rotors

Номер: US20220065252A1
Автор: Amit Vaidya, David M. Rockwell, Ulf J. Jonsson, Yifan QIU, Zaffir A. Chaudhry
Принадлежит: Carrier Corp

Disclosed is a direct-drive refrigerant screw compressor, having: a housing; a compression chamber in the housing; a pair of rotors, each rotor of the pair of rotors being rotationally disposed in the compression chamber and including an outer surface with a screw-geared profile; a fluid being disposed in the compression chamber, the fluid consisting of a working fluid for providing lubrication to each rotor; a first port extending through the housing and configured for directing the fluid toward the compression chamber; and when the compressor is activated, each rotor rotates and the fluid is distributed about each rotor to lubricate each rotor.

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Номер записи: 46
25-02-2021 дата публикации

ROTARY COMPRESSOR AND REFRIGERATION CYCLE APPARATUS

Номер: US20210054842A1
Автор: Hirayama Takuya
Принадлежит: TOSHIBA CARRIER CORPORATION

According to one embodiment, a rotary shaft of a rotary compressor includes a first connection shaft and a second connection shaft. The first connection shaft has a cross-sectional shape including a first outer surface, a second outer surface, and a third outer surface. L1 represents a distance from an intersecting point located on one end side where the first outer surface and the second outer surface intersect each other to the rotation center, L2 represents a distance from an intersecting point located on an other end side where the first outer surface and the second outer surface intersect each other, to the rotation center, and L3 represents a distance from the third outer surface to the rotation center, a relationship of L1>L3≥L2 is satisfied. 1. A rotary compressor comprising:a rotary shaft including a first journal portion supported by a first bearing, a second journal portion provided coaxial with the first journal portion and supported by a second bearing, first to third crank portions provided between the first journal portion and the second journal portion, arranged along an axial direction of the journal portions with intervals respectively therebetween and having circular cross sectional shapes whose eccentric directions are shifted in a circumferential direction of the journal portions, a first connection shaft provided across between the first crank portion and the second crank portion, and a second connection shaft provided across between the second crank portion and the third crank portion, which are integrated as one body, eccentric directions of adjacent pairs of the crank portions being shifted with respect to a rotation center of the journal portions in a circumferential direction within a range of 120°±10°;ring-like rollers engaged with outer circumferential surfaces of the first to third crank portions, respectively;a first cylinder body accommodating the respective roller engaged with the first crank portion, and the respective roller ...

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Номер записи: 47
22-02-2018 дата публикации

GEAR PUMP BEARING

Номер: US20180051742A1
Автор: YATES Martin
Принадлежит: ROLLS-ROYCE PLC

The invention provides a gear pump bearing block and method of manufacturing gear pump bearing block. Bearing block includes bush formed of antifriction alloy, having a cylindrical portion providing bore adapted to receive bearing shaft of a gear of pump, and further having a flange portion extending radially outwardly at end of cylindrical portion to provide thrust face adapted to slidingly engage with side surface of gear. Bearing block also has backing layer covering radially outer surface of cylindrical portion and rear face of flange portion, backing layer being formed of relatively less dense alloy compared to antifriction alloy. Furthermore, there is an annular formation of one or more stiffening members, formation surrounding bore, the, or each, stiffening member being embedded in flange portion, and the, or each, stiffening member being formed of material having higher elastic modulus than antifriction alloy. 1. A gear pump bearing block having:a bush formed of antifriction alloy, having a cylindrical portion providing a bore adapted to receive a bearing shaft of a gear of the pump, and further having a flange portion extending radially outwardly at an end of the cylindrical portion to provide a thrust face adapted to slidingly engage with a side surface of the gear;a backing layer covering a radially outer surface of the cylindrical portion and a rear face of the flange portion, the backing layer being formed of relatively less dense alloy compared to the antifriction alloy; andan annular formation of one or more stiffening members, the formation surrounding the bore, the, or each, stiffening member being embedded in the flange portion, and the, or each, stiffening member being formed of a material having a higher elastic modulus than the antifriction alloy.2. A gear pump bearing block according to claim 1 , wherein there is a single annular stiffening member.3. A gear pump bearing block according to claim 1 , wherein there are a plurality of ...

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Номер записи: 48
22-02-2018 дата публикации

GEAR PUMP BEARING

Номер: US20180051743A1
Автор: YATES Martin
Принадлежит: ROLLS-ROYCE PLC

Invention provides gear pump bearing block and method of manufacturing gear pump bearing block. Bearing block includes a bush formed of antifriction alloy, bush having cylindrical portion providing bore adapted to receive bearing shaft of gear of pump, and further having flange portion extending radially outwardly at end of cylindrical portion to provide thrust face adapted to slidingly engage with side surface of gear. Bearing block also has backing layer covering radially outer surface of cylindrical portion and rear face of flange portion, backing layer being formed of less dense alloy compared to antifriction alloy. Furthermore, there is an annular gallery embedded in flange portion such that gallery is spaced from surface of bore and from thrust face, gallery surrounding bore, with inlet to and outlet from annular gallery such that, in use, fluid flows from inlet, through annular gallery to provide cooling of thrust face, and then to outlet. 1. A gear pump bearing block having:a bush formed of antifriction alloy, the bush having a cylindrical portion providing a bore adapted to receive a bearing shaft of a gear of the pump, and further having a flange portion extending radially outwardly at an end of the cylindrical portion to provide a thrust face adapted to slidingly engage with a side surface of the gear;a backing layer covering a radially outer surface of the cylindrical portion and a rear face of the flange portion, the backing layer being formed of relatively less dense alloy compared to the antifriction alloy;an annular gallery embedded in the flange portion such that the gallery is spaced from the surface of the bore and from the thrust face, the gallery surrounding the bore; andan inlet to and an outlet from the annular gallery such that, in use, fluid flows from the inlet, through the annular gallery to provide cooling of the thrust face, and then to the outlet.2. A gear pump bearing block according to claim 1 , wherein the gear pump bearing block ...

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Номер записи: 49
26-02-2015 дата публикации

Scroll compressor

Номер: US20150056091A1
Автор: Atsushi Sakuda, Hidenobu Shintaku, Sadayuki Yamada, Takashi Morimoto, Takeshi Ogata, Yusuke Imai
Принадлежит: Panasonic Corp

A diameter of a main bearing member 12 m is defined as Dm, a length thereof is defined as Lm, a diameter of the eccentric bearing member 11 e is defined as De and a length thereof is defined as Le. A ratio (=Lm/Dm) of the length and the diameter of the main bearing member 12 m and a ratio (=Le/De) of the length and the diameter of the eccentric bearing member 11 e are set to Le/De≦Lm/Dm≦1. Therefore, contact at edge portions of both ends of the eccentric bearing member 11 e does not occur, and it is possible to prevent contact at edge portions of both ends of the main bearing member 12 m even if the main shaft 13 m inclines, and to reduce a viscosity loss caused by oil 9 a. Hence, the present invention provides a scroll compressor securing reliability of the bearing members 12 m, 11 e and 16 s and having high efficiency.

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Номер записи: 50
23-02-2017 дата публикации

Scroll type device incorporating spinning or co-rotating scrolls

Номер: US20170051741A1
Автор: Bryce R. Shaffer, Robert W. Shaffer, Russell Vigil
Принадлежит: Bryce R. Shaffer, Robert W. Shaffer, Russell Vigil

A co-rotating scroll is disclosed having a motor having a shaft, a drive scroll connected to the shaft for moving the drive scroll, a driven scroll connected to the drive scroll to be moved by the drive scroll, and an idler shaft for aligning the drive scroll and the driven scroll and for allowing the driven scroll to be moved by the drive scroll.

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Номер записи: 51
10-03-2022 дата публикации

OIL PUMP

Номер: US20220074406A1
Автор: SAITO Yuken, Watanabe Manabu, Yahagi Tomonori
Принадлежит:

An oil pump is configured to include a rotor, a drive shaft that drives the rotor to rotate, a rotor chamber in which the rotor is contained, an inlet port and an outlet port each provided in the vicinity of the rotor chamber, and a pump cover. The pump cover is made of a resin. On a portion of an outer surface side of the pump cover corresponding to an inner portion, in which oil circulates, of the pump cover, a rib that has an erecting wall shape is provided. 1. An oil pump comprising:a rotor;a drive shaft that drives the rotor to rotate;a rotor chamber in which the rotor is contained;an inlet port and an outlet port each provided in the vicinity of the rotor chamber; anda pump cover, whereinthe pump cover is made of a resin, andon a portion of an outer surface side of the pump cover corresponding to an inner portion, in which oil circulates, of the pump cover, a rib that has an erecting wall shape is provided.2. The oil pump according to claim 1 , wherein the rib is formed along a shape of the outlet port.3. The oil pump according to claim 1 , wherein the rib is formed on the portion corresponding to a range disposed at a radial middle portion of the outlet port and extending claim 1 , along a direction of the rotation of the rotor claim 1 , to the vicinity of a terminal end of the outlet port or to the vicinity of a beginning end of the inlet port.4. The oil pump according to claim 1 , wherein the rib is formed to extend gradually radially away from a periphery of an insertion portion which is disposed at a radial middle portion of the outlet port and through which the drive shaft is inserted claim 1 , and a portion of the rib extending away has a linear shape.5. The oil pump according to claim 1 , wherein claim 1 , on an outer peripheral side or an inner peripheral side of the rib claim 1 , an auxiliary rib having a length claim 1 , in a direction of the rotation claim 1 , which is shorter than that of the rib is formed to be radially spaced apart by a ...

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Номер записи: 52
10-03-2022 дата публикации

VACUUM PUMP

Номер: US20220074407A1
Автор: Kabasawa Takashi
Принадлежит:

A pressure difference of liquid is generated between an upper end and a lower end of a thread groove by the action of a thread groove pump formed between the thread groove and a lower end wall portion of a rotating rotor shaft. As a result, liquid of a bottom space is sucked up and passes through a hollow hole and is discharged to the outside of the rotor shaft through communication holes. The discharged liquid passes through the inside of a hub of a rotating body and reaches an extension member where it is sprayed radially in the form of droplets from a protrusion. The droplets are received by a partition wall. Due to the presence of a protrusion in an upper portion of the partition wall, the droplets cannot cross over the partition wall. The accumulated liquid drops through a communication hole to the bottom space. 1. A vacuum pump , comprising:a rotor blade;a rotor shaft fixed to the rotor blade and having a communication passage by which a shaft end and a shaft outer peripheral portion are communicated with each other;a magnetic bearing supporting the rotor shaft in a levitated manner in the air;a rotary drive means for driving the rotor shaft to rotate;a liquid storage portion in which liquid is stored; anda liquid transport mechanism that sends out the liquid stored in the liquid storage portion from the shaft outer peripheral portion through the communication passage in response to rotary drive of the rotary drive means.2. The vacuum pump according to claim 1 , whereinthe liquid transport mechanism includes an insertion member inserted into the communication passage of the shaft end of the rotor shaft, anda spiral groove formed on either a peripheral wall around the shaft end of the rotor shaft or the insertion member.3. The vacuum pump according to claim 1 , wherein the liquid transport mechanism includes a tapered peripheral wall formed around the communication passage of the shaft end of the rotor shaft.4. The vacuum pump according to claim 1 , wherein an ...

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Номер записи: 53
10-03-2022 дата публикации

GEAR PUMP

Номер: US20220074408A1
Автор: TAKAMIYA Kenji
Принадлежит: IHI CORPORATION

A gear pump is provided with: a casing including a suction port configured to suck fluid, and a discharge port configured to expel the pressurized fluid; a gear including a wheel portion with gear teeth and an axially elongated shaft portion, the gear being so housed in the casing as to transport the fluid from the suction port to the discharge port; and a floating bearing rotatably supporting the shaft portion and being movable axially, the floating bearing including a sealing face in contact with the wheel portion, a receiver face axially opposed to the sealing face; and a communication path having an opening on the sealing face and communicating the opening with a third pressurization chamber defined by a third receiver face of the receiver face and the casing. 1. A gear pump for pressurizing and expelling fluid , comprising:a casing including a suction port configured to suck the fluid, and a discharge port configured to expel the pressurized fluid;a gear including a wheel portion rimmed by gear teeth and a shaft portion axially elongated from the wheel portion, the gear being so housed in the casing that the gear teeth, by rotation of the gear about an axis, transport the fluid from the suction port to the discharge port; anda floating bearing rotatably supporting the shaft portion and being movable axially, the floating bearing includinga sealing face in contact with the wheel portion,a receiver face axially opposed to the sealing face, the receiver face includinga first receiver face in combination with the casing defining a first pressurization chamber in communication with the suction port,a second receiver face in combination with the casing defining a second pressurization chamber in communication with the discharge port,a third receiver face in combination with the casing defining a third pressurization chamber, anda communication path having an opening on the sealing face and communicating the opening with the third pressurization chamber.2. The gear ...

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Номер записи: 54
10-03-2022 дата публикации

SCROLL COMPRESSOR

Номер: US20220074411A1
Автор: SATA Kenichi
Принадлежит:

A scroll compressor includes a scroll compression element including a movable scroll, a drive shaft configured to allow the movable scroll to rotate, a boss portion, and a sliding bearing. The boss portion is connected to a back surface of the movable scroll. The boss portion is configured to rotatably support an upper end portion of the drive shaft. The upper end of the drive shaft is configured as an eccentric shaft portion. The sliding bearing is provided between the boss portion and the eccentric shaft portion. An axially central portion of the boss portion is more rigid than a connection portion of the boss portion connected to the movable scroll. The boss portion is shaped so that the central portion projects outward. 1. A scroll compressor comprising:a scroll compression element including a movable scroll;a drive shaft configured to allow the movable scroll to rotate;a boss portion connected to a back surface of the movable scroll, the boss portion being configured to rotatably support an upper end portion of the drive shaft, and the upper end of the drive shaft being configured as an eccentric shaft portion; anda sliding bearing provided between the boss portion and the eccentric shaft portion,an axially central portion of the boss portion being more rigid than a connection portion of the boss portion connected to the movable scroll,the boss portion being shaped so that the central portion projects outward.2. The scroll compressor of claim 1 , whereinthe central portion of the boss portion is more rigid than a distal end portion of the boss portion.3. The scroll compressor of claim 1 , whereinthe central portion of the boss portion is thicker than the connection portion of the boss portion.4. The scroll compressor of claim 2 , whereinthe central portion of the boss portion is thicker than the connection portion of the boss portion.5. The scroll compressor of claim 1 , wherein{'claim-text': ['an inner portion made of a first material, and the connection ...

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Номер записи: 55
01-03-2018 дата публикации

GEROTOR ASSEMBLY

Номер: US20180058450A1
Автор: Claywell Mark R., Davis John B., Demarest Jeremy T., McGowan Sean M., PIKE Joel H., Pryor Bryan K.
Принадлежит:

A gerotor assembly is provided which includes a crankshaft, an inner drive gear, an outer driven gear and a housing defining an oil groove. The inner drive gear defines a plurality of inner gear teeth. The outer driven gear defines a plurality of outer gear teeth operatively configured to engage with the inner gear teeth. The outer drive gear may define a plurality of passageways to form a hydrodynamic film between the outer driven gear and the housing. Alternatively, a high pressure oil pump may feed oil into the oil groove in order to distribute a hydrodynamic film. 1. A gerotor assembly comprising:a crankshaft;an inner drive gear mounted on the crankshaft;an outer driven gear defining a plurality of passageways and operatively configured to engage with the inner drive gear, the outer driven gear and the inner drive gear further defining at least one compressible cavity therebetween; anda housing defining an oil groove between the housing and outer driven gear, the oil groove being in fluid communication with the at least one compressible cavity via the plurality of passageways.2. The gerotor assembly of wherein the oil groove is adjacent to an exterior side of the outer driven gear.3. The gerotor assembly of wherein the plurality of passageways are radially aligned.4. The gerotor assembly of wherein the oil groove is adapted to distribute a hydrodynamic film between the outer driven gear and the housing.5. The gerotor assembly of wherein the oil groove has a depth of approximately 2.0 mm.6. The gerotor assembly of wherein the plurality of passageways begin at an inner side of the outer driven gear and terminate in a groove defined in the exterior surface of the outer driven gear.7. The gerotor assembly of wherein the plurality of passageways each begin with an aperture in an inner side of the outer driven gear and terminate in a corresponding aperture defined in the exterior side of the outer driven gear.8. The gerotor assembly of wherein the plurality of ...

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Номер записи: 56
02-03-2017 дата публикации

PUMP WITH SHAPED FACE SEAL

Номер: US20170058894A1
Автор: Alexander Philip Taylor, Oehman Robert E.
Принадлежит:

A sealing arrangement is disclosed for use in a pump. The sealing arrangement can include a first pump component having a first face surface. The first face surface can have a sealing protrusion thereon. A second pump component can have a second face surface positioned in confronting relation to the first face surface. The second pump component can define a sealing cavity for holding a fluid under pressure. The sealing protrusion is positioned to engage the second face surface when the first face surface is pressed against the second face surface so that the sealing protrusion seals against the second face surface to prevent movement of the fluid from the sealing cavity past the sealing protrusion. Other embodiments are described and claimed. 1. A sealing arrangement for a pump , comprisinga first pump component having a first face; anda second pump component having a second face positioned in confronting relation to the first face, the second pump component defining a sealing cavity for holding a fluid under pressure, wherein one of the first face and the second face has a sealing protrusion thereon,wherein the sealing protrusion is positioned to engage an opposing face when the first face and the second face are pressed together so that the sealing protrusion seals against the opposing face to prevent movement of the fluid from the sealing cavity past the sealing protrusion.2. The sealing arrangement of claim 1 , wherein the sealing protrusion has a geometric cross-sectional shape.3. The sealing arrangement of claim 1 , wherein the sealing protrusion has a non-geometric cross-sectional shape.4. The sealing arrangement of claim 1 , wherein the first pump component is a sealing sleeve and the second pump component is a front plate.5. The sealing arrangement of claim 4 , wherein the sealing protrusion is disposed about a cylindrical body portion of the sealing sleeve.6. The sealing arrangement of claim 5 , wherein the sealing protrusion is configured to engage the ...

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Номер записи: 57
02-03-2017 дата публикации

LUBRICATION SYSTEM OF ELECTRIC COMPRESSOR

Номер: US20170058900A1
Автор: KIM Hyun-Jin, Moon Je-Hyeon, PARK In-Won
Принадлежит:

A lubrication system of an electric compressor may include a lower housing having a refrigerant inlet port formed to pierce an outer side plane thereof, a rotational shaft supported rotatably by the lower housing and a frame, a rotor for rotating the rotational shaft, an orbiting scroll disposed on a top portion of the frame to be orbited by the rotational shaft, a fixed scroll disposed on a top portion of the orbiting scroll to allow the orbiting scroll to orbit therein, and an upper housing disposed on a top portion of the fixed scroll and having a refrigerant outlet formed in an outer side plane thereof. 1. A lubrication system of an electric compressor comprising:a lower housing comprising a refrigerant inlet port disposed to pierce an outer side plane thereof;a rotational shaft supported by the lower housing and a frame;a rotor for rotating the rotational shaft;an orbiting scroll disposed on a top portion of the frame to be orbited by the rotational shaft;a fixed scroll disposed on a top portion of the orbiting scroll to allow the orbiting scroll to orbit therein; andan upper housing disposed on a top portion of the fixed scroll and comprising a refrigerant outlet disposed in an outer side plane thereof.2. The lubrication system according to claim 1 , wherein the fixed scroll comprises:a fixed scroll mirror plate in a disc shape disposed horizontally;a discharge port piercing a center of the fixed scroll mirror plate in a vertical direction;an outer side plane disposed to protrude downward along an outer peripheral surface of the fixed scroll mirror plate;a plurality of suction ports piercing the outer side plane in a horizontal direction;a fixed scroll wrap in a spiral shape protruding vertically from a bottom plane of the fixed scroll mirror plate; anda suction chamber that is a space formed between the fixed scroll wrap and the outer side plane.3. The lubrication system according to claim 2 , wherein the upper housing comprises:a discharge chamber connected ...

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Номер записи: 58
04-03-2021 дата публикации

ELECTRIC COMPRESSOR

Номер: US20210062808A1
Автор: HATTORI Yuya, MAEDA Takumi, YAMASHITA Takuro
Принадлежит: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI

An electric compressor includes a housing, a drive shaft, a motor, a fixed scroll, a movable scroll, and a fixed block. The fixed block is fixed to the housing and disposed between the motor and the movable scroll. The motor includes a stator and a rotor. The rotor has an introduction passage that is formed through the rotor in an axial direction of the drive shaft. The drive shaft includes a balance weight that is disposed between the fixed block and the motor. The balance weight extends to a position where the balance weight covers at least a part of the introduction passage in a radial direction of the drive shaft in a view in the axial direction of the drive shaft. The balance weight is located away from the rotor by a predetermined distance in the axial direction of the drive shaft. 1. An electric compressor comprising:a housing;a drive shaft that is disposed in the housing and rotatable around an axis of the drive shaft;a motor disposed in the housing and configured to rotate the drive shaft;a fixed scroll fixed to and disposed in the housing;a movable scroll disposed in the housing and connected to the drive shaft, the movable scroll being revolved by rotation of the drive shaft, wherein a compression chamber that compresses refrigerant is formed between the movable scroll and the fixed scroll; anda fixed block fixed to the housing and disposed between the motor and the movable scroll, the fixed block supporting the drive shaft such that the drive shaft is rotatable, the fixed block defining a motor chamber in the housing to accommodate the motor, whereinthe housing has an inlet through which refrigerant is drawn into the motor chamber,the motor includes a stator fixed in the motor chamber and a rotor fixed to the drive shaft, disposed in the stator, and rotatable together with the drive shaft,the rotor has an introduction passage that is formed through the rotor in an axial direction of the drive shaft, wherein refrigerant flows through the introduction ...

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Номер записи: 59
04-03-2021 дата публикации

SCROLL COMPRESSOR

Номер: US20210062809A1
Автор: UEKAWA Takashi
Принадлежит:

Provided is a scroll compressor including a sealed case, a fixed scroll portion fixed at an inside of the sealed case and provided with a fixed scroll vane, an orbiting scroll portion provided with an orbiting scroll vane that is coupled to the fixed scroll vane, and a rotating shaft formed to allow the orbiting scroll portion to orbit. The orbiting scroll portion is provided at a center thereof with a shaft support portion such that the orbiting scrolling portion is coupled to the rotating shaft. The shaft support portion includes a closing portion provided to cover an end portion of the rotating shaft, and slide while in contact with an inner surface of the fixed scroll portion, and a high-pressure space formed in an outer surface of the closing portion that faces the inner surface of the fixed scroll portion, and on which a discharge pressure acts. 1. A scroll compressor comprising:a sealed case;a fixed scroll portion fixed at an inside of the sealed case and provided with a fixed scroll vane;an orbiting scroll portion provided with an orbiting scroll vane that is coupled to the fixed scroll vane; anda rotating shaft formed to allow the orbiting scroll portion to orbit,wherein the orbiting scroll portion includes a shaft support portion provided at a center portion thereof and formed to allow the orbiting scrolling portion to be coupled to the rotating shaft, and a closing portion provided to cover an end portion of the rotating shaft and configured to slide while in contact with an inner surface of the fixed scroll portion, and', 'a high-pressure space formed in an outer surface of the closing portion that faces the inner surface of the fixed scroll portion and on which a discharge pressure is configured to act., 'wherein the shaft support portion includes2. The scroll compressor of claim 1 , wherein the closing portion is provided to face the inner surface of the fixed scroll portion in a direction in which the orbiting scroll portion is coupled to the fixed ...

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Номер записи: 60
08-03-2018 дата публикации

DUAL INPUT PUMP AND SYSTEM

Номер: US20180066655A1
Автор: KOWALSKI Andrzej, Muizelaar Richard
Принадлежит:

A dual input fluid pump system for coupling to a transmission or an engine and an electrical motor is disclosed. The system may include a first external gear, vane, internal gear, or gerotor-type pump, a second external gear pump, and connecting shaft. Gears of the second pump include one-way clutch bearings that enable operation of the system in multiple modes including engine-only; motor-only; a combined mode where the engine operates the first pump via the shaft and the motor operates the second pump with an external gear rotating in its pumping direction at a rate greater than the shaft; inlet boost; and a disconnection mode. Also noted is a pump that has a first shaft for coupling the engine to a first external gear and a second shaft for coupling the motor to a second external gear, as well as a one-way clutch bearing that performs in a similar manner. 1. A dual input fluid pump system for coupling to a transmission or an internal combustion engine power source and an electrical motor power source , the pump system comprising:a first pump comprising a housing, a rotatable pumping element rotatably mounted in the housing, an inlet, an outlet, and a first input shaft for coupling the transmission or internal combustion engine power source to the rotatable pumping element thereof for rotating the rotatable pumping element in a pumping direction to pump fluid from the inlet to the outlet through the housing;a second pump that is an external gear pump comprising a housing, at least first and second intermeshed external gears rotatably mounted in the housing, an inlet, an outlet, and a second input shaft for coupling the electrical motor power source to the second external gear thereof for rotating the gears in counter-rotating pumping directions to pump fluid from the inlet to the outlet through the housing; anda connecting shaft between the rotatable pumping element of the first pump and the first external gear of the second pump, the connecting shaft being ...

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Номер записи: 61
08-03-2018 дата публикации

Compressor

Номер: US20180066657A1
Автор: IGNATIEV Kirill M., PEREVOZCHIKOV Michael M.
Принадлежит: EMERSON CLIMATE TECHNOLOGIES, INC.

A compressor may include a shell, a compression mechanism, a driveshaft, a motor assembly, and a stator support member. The compression mechanism is disposed within the shell. The driveshaft drivingly is engaged with the compression mechanism. The motor assembly may be disposed within the shell and is drivingly engaged with the driveshaft. The motor assembly includes a rotor and a stator. The stator is fixed relative to the shell. The rotor may include an axially extending portion and a radially extending portion. The axially extending portion may be disposed radially outward relative to the stator. The radially extending portion may engage the driveshaft and may be disposed axially between the stator and the compression mechanism. The stator support member may be fixed relative to the shell and the stator. The stator support member may extend longitudinally through at least a portion of the stator. 1. A compressor comprising:a shell;a compression mechanism disposed within the shell;a driveshaft drivingly engaged with the compression mechanism;a motor assembly disposed within the shell and drivingly engaged with the driveshaft, the motor assembly including a rotor and a stator, the stator is fixed relative to the shell, the rotor including an axially extending portion and a radially extending portion, the axially extending portion disposed radially outward relative to the stator, the radially extending portion engaging the driveshaft and disposed axially between the stator and the compression mechanism; anda stator support member fixed relative to the shell and the stator, the stator support member extending longitudinally through at least a portion of the stator and axially spaced apart from the drive shaft.2. The compressor of claim 1 , further comprising a bearing housing rotatably supporting the driveshaft claim 1 , wherein the radially extending portion of the rotor is disposed axially between the stator and the bearing housing.3. The compressor of claim 2 , ...

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Номер записи: 62
09-03-2017 дата публикации

COMPRESSOR

Номер: US20170067468A1
Автор: "OHANLEY HARRISON", NELSON ANDREW, PITTS JEREMY, SANTEN JOHANNES, SANTOS PEDRO, WALTON JOHN, WESTWOOD MITCHELL
Принадлежит:

A positive displacement rotary compressor is designed for near isothermal compression, high pressure ratios, high revolutions per minute, high efficiency, mixed gas/liquid compression, a low temperature increase, a low outlet temperature, and/or a high outlet pressure. Liquid injectors provide cooling liquid that cools the working fluid and improves the efficiency of the compressor. A gate moves within the compression chamber to either make contact with or be proximate to the rotor as it turns. 1. A positive displacement compressor , comprising:a rotor casing that includes a compression chamber with a first end, a second end, and an inner curved surface;a shaft located axially in the compression chamber;a non-circular rotor mounted for rotation with the shaft relative to the casing, the non-circular rotor having a sealing portion, the sealing portion having a curved surface that corresponds with the inner curved surface of the compression chamber, and a non-sealing portion;a gate having a first end and a second end, and being operable to move relative to the casing to locate the first end proximate to the rotor as the rotor rotates.2. The positive displacement compressor of claim 1 , further comprising at least one liquid injection nozzle located to provide injected fluids into the compression chamber claim 1 , wherein the at least one liquid injection nozzle is configured to provide an atomized liquid spray.3. The positive displacement compressor of claim 1 , further comprising at least one liquid injector positioned to inject liquid into an area within the compression chamber where compression occurs during operation of the compressor.4. The positive displacement compressor of claim 1 , further comprising at least one liquid injector connected with the rotor casing to inject liquids into the compression chamber.5. The positive displacement compressor of claim 1 , wherein:the rotor has a first end and a second end aligned horizontally;the gate is located at the ...

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Номер записи: 63
09-03-2017 дата публикации

BEARING AND SCROLL-TYPE FLUID MACHINE

Номер: US20170067508A1
Автор: Akizuki Masanori, Sawamoto Akira
Принадлежит:

Bearing has base material and coating layer Base material contains crank shaft on an inner circumferential surface side. The inner circumferential surface of base material is coated with coating layer The inner circumferential surface side of base material is coated with resin with thickness t, the resin is dried, and thereafter surface treatment is carried out such that multiple grooves C are provided on the surface of the resin so as to intersect with the direction of crank shaft whereby coating layer is formed. Peak portions B formed between adjacent grooves C come into contact with the outer circumferential surface of crank shaft to support crank shaft With bearing the thickness of peak portions B at the center in the direction of the crank shaft differs from the thickness of peak portions B at the end. 1. A bearing comprising:a tubular member for containing a shaft on an inner circumferential surface side; anda coating layer that coats the inner circumferential surface, a plurality of grooves being provided therein so as to intersect a direction of the shaft, and peak portions formed between the adjacent grooves coming into contact with an outer circumferential surface of the shaft so as to support the shaft,wherein a thickness from the inner circumferential surface to the peak portion at a center in the direction and a thickness from the inner circumferential surface to the peak portion at an end in the direction are different.2. The bearing according to claim 1 , wherein the thickness of the peak portion at the center in the direction is thicker than the thickness of the peak portion at the end in the direction.3. The bearing according to claim 1 , wherein the thickness of the peak portion at the center in the direction is thinner than the thickness of the peak portion at the end in the direction.4. The bearing according to claim 1 , wherein a maximum value for a difference between thinnest portions of the grooves is smaller compared to a maximum value of a ...

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Номер записи: 64
29-05-2014 дата публикации

Scroll Compressor with Unloader Assembly

Номер: US20140147324A1
Автор: Ajay Utpat, James A. Schaefer
Принадлежит: Emerson Climate Technologies Inc

A compressor may include a shell, orbiting and non-orbiting scrolls, an unloader bushing assembly and a drive shaft. The unloader bushing assembly may include a drive bushing and a spring. The drive bushing includes an outer surface engaged with the orbiting scroll and may define an opening extending from a first bushing end to a second bushing end. The spring may include a body disposed within the opening of the drive bushing and may include first and second spring ends with at least a portion of the first spring end extending laterally from the body and overlapping the first bushing end. At least a portion of the second spring end may extend laterally from a body and overlap the second bushing end to secure the spring within the drive bushing. The drive shaft may include a crank pin disposed within the opening of the drive bushing and engaging the spring.

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Номер записи: 65
11-03-2021 дата публикации

Scroll type device having liquid cooling through idler shafts

Номер: US20210071669A1
Автор: Bryce R. Shaffer, John Wilson, Justin Mattice
Принадлежит: Air Squared Inc

A scroll device is disclosed having a housing, a motor having a shaft, an orbiting scroll connected to the shaft for moving the orbiting scroll, a fixed scroll mated to the orbiting scroll, an idler shaft for aligning the orbiting scroll and the fixed scroll, an inlet formed in the housing and/or the fixed scroll for receiving a cooling liquid, and a channel formed in the idler shaft for receiving the cooling liquid.

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Номер записи: 66
24-03-2022 дата публикации

CLEARANCE ADJUSTMENT FOR TWIN-SCREW PUMPS

Номер: US20220090598A1
Автор: Blatt David Johannes, Korte Eike Steffen, LISSEL Manuela
Принадлежит: ITT Bornemann GmbH

Technologies are generally described for clearance adjustments in twin-screw pump assemblies. A twin-screw pump assembly may include a conically shaped portion of a drive shaft enveloped by a bushing. For clearance adjustment, both clamping nuts of the drive shaft, which provide pretention to the bushing and secure an axial position of a threaded screw to the drive shaft, may be removed on the flow side of the pump assembly and the bushing loosened to adjust the angularity between bushing and drive shaft. The bushing may then be pushed over the conically shaped portion and both clamping nuts re-assembled. In some examples, a clamping nut of the driven shaft may be designed and used as removal/loosening tool for the drive shaft bushing. 1. A method for clearance adjustment of a pump assembly , the method comprising: the drive shaft is configured to receive a rotational force outside the pump assembly,', 'the drive shaft comprises a first portion inside a gear chamber defined by the housing and a second portion inside a flow chamber defined by the housing, and', 'at least part of the second portion of the drive shaft is conically shaped;, 'removing a first clamping nut that secures rotatably an axial position of a first threaded screw to a drive shaft of the pump assembly, wherein'}removing a second clamping nut that provides pretension to a bushing that envelopes the conically shaped part of the second portion of the drive shaft;loosening the bushing; and the driven shaft comprises a first portion inside the gear chamber and a second portion inside the flow chamber,', 'the first portion of the driven shaft is mechanically coupled to the first portion of the drive shaft through one or more timing gears and configured to receive a rotational force from the drive shaft, and', 'the second portion of the driven shaft is coupled to the second plurality of thread flanks of the second threaded screw intermeshed with the first plurality of thread flanks of the first threaded ...

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Номер записи: 67
24-03-2022 дата публикации

All-metal conical combined screw pump suitable for petroleum field

Номер: US20220090599A1
Автор: Liang Haiyang, ZHANG Zhihai, Zhou Guang
Принадлежит:

An all-metal conical combined screw pump suitable for petroleum field includes: a stator, a rotor (), a sleeve () and a sucker rod (), wherein the internal threaded curved surface and the external threaded curved surface are both tapered The spiral structure and the taper are the same, and the end of the inner threaded surface and the outer threaded surface with the larger radial size is adjacent to the sucker rod; the all-metal conical combined screw pump further comprises an elastic telescopic component, wherein the elastic telescopic component comprises a movable part, a fixed part and a elastic part, the movable part is fixedly connected to the rotor, the fixed part is fixedly connected to the sucker rod, the movable part and the fixed part are slidly fitted in the up and down directions and can be To transmit torque to the sucker rod and the rotor, one end of the elastic member abuts against the movable part or the rotor, and the other end abuts against the fixed part or the sucker rod, the elastic member can Elastic contraction or elastic expansion along the sliding direction of the movable part. 1. An all-metal conical combined screw pump suitable for petroleum field comprising: a stator , a rotor , a sleeve and a sucker rod; wherein the stator is provided with an internally threaded curved surface , and the rotor is installed in the stator and is provided with An external threaded curved surface matched with an internal threaded curved surface , the sleeve is connected to the stator , and the sucker rod is installed in the sleeve , characterized in that: the internal threaded curved surface and the external threaded curved surface are both tapered The spiral structure and the taper are the same , and the end of the inner threaded surface and the outer threaded surface with the larger radial size is adjacent to the sucker rod; the all-metal conical combined screw pump further comprises an elastic telescopic assembly , the elastic telescopic assembly ...

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Номер записи: 68
16-03-2017 дата публикации

Multi-Vane Impeller Device

Номер: US20170074099A1
Автор: Gregory T. Kemp, John L. Montgomery, Joseph S. Orosz
Принадлежит: TORAD ENGINEERING LLC

A device usable as an impeller has a plurality of vanes rotating eccentrically about a shaft. Eccentric rotation is enabled by a cam mounted on the shaft. The vanes are received within slots in a rotor which surrounds the shaft and rotates about an axis coaxial with the shaft. The rotor rotates within a housing having a cylindrical surface facing the rotor. The surface is eccentric to the shaft. The vanes execute reciprocal motion upon rotation of the rotor. The vane motion is constrained so that the edges of the vanes remain proximate to the cylindrical surface during rotation.

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Номер записи: 69
16-03-2017 дата публикации

SCREW COMPRESSOR

Номер: US20170074266A1
Автор: FUKUSHIMA Yosuke, Tsugihashi Kazuki
Принадлежит: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)

A screw compressor includes compressor bodies, a motor disposed in a side of the compressor bodies, a gear box coupled to the compressor bodies and transmitting the drive force of the motor to a screw rotor, and a tubular coupling casing coupling the gear box and the motor and having horizontal axis. The coupling casing has a work hole in the horizontal direction. The work hole is used for maintaining a coupling accommodated in the coupling casing. The coupling casing has a rib extending in the up-down direction. It is thus possible to avoid reduction in the rigidity of the coupling casing with no cost increase, and to improve maintainability. 1. A screw compressor comprising:a compressor body compressing a fluid by a screw rotor;a motor disposed in a side of the compressor body and supplying a drive force to the compressor body;a gear box coupled to the compressor body and transmitting the drive force of the motor to the screw rotor;a tubular coupling casing coupling the gear box and the motor and having a horizontal axis;an input shaft coupled to the shaft of the motor and inputting the drive force of the motor to the gear box;a coupling accommodated in the coupling casing and coupling the input shaft and the shaft of the motor;a work hole in the horizontal direction provided in the coupling casing and used for maintaining the coupling; anda rib provided in the coupling casing and extending in the up-down direction.2. The screw compressor according to claim 1 , wherein the rib extends in the vertical direction.3. The screw compressor according to claim 1 , further comprising:the compressor body including a first compressor body and a second compressor body;a bull gear coupled to the input shaft so as to be accommodated in the gear box;a first pinion gear accommodated in the gear box, coupled to the shaft of the screw rotor of the first compressor body so that the axis of the first pinion gear is disposed above the axis of the bull gear, and engaging with the bull ...

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Номер записи: 70
16-03-2017 дата публикации

A scroll compressor

Номер: US20170074267A1
Автор: Ingrid CLAUDIN, Patrice Bonnefoi, Yves Rosson
Принадлежит: Danfoss Commercial Compressors SA

The scroll compressor ( 1 ) includes an orbiting scroll arrangement ( 7 ), and a drive shaft ( 18 ) configured to drive the orbiting scroll arrangement ( 7 ) in an orbital movement, the drive shaft ( 18 ) including a lubrication channel ( 32 ) and a first lubrication hole ( 35 ) fluidly connected to the lubrication channel ( 32 ) and emerging in an outer wall of the drive shaft ( 18 ). The scroll compressor ( 1 ) further includes a first and a second bearings ( 38, 39 ) axially offset along a rotation axis of the drive shaft ( 18 ) and each configured to engage the drive shaft ( 18 ). The first and second bearings ( 38, 39 ) and the drive shaft ( 18 ) partially define a first annular gap ( 44 ) in which emerges the first lubrication hole ( 35 ). The first bearing ( 38 ) and the drive shaft ( 18 ) define a first oil recess fluidly connected to the first annular gap ( 44 ), and the second bearing ( 39 ) and the drive shaft ( 18 ) define a second oil recess fluidly connected to the first annular gap ( 44 ).

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Номер записи: 71
14-03-2019 дата публикации

Scroll compressor with bypass portions

Номер: US20190078567A1
Автор: Cheolhwan Kim, Inho Won, Yongkyu Choi
Принадлежит: LG ELECTRONICS INC

There is disclosed a scroll compressor according to the present disclosure in which a discharge port is formed at a central portion thereof, and a pair of two compression chambers continuously moving toward the discharge port are formed, and a plurality of bypass portions are formed at each interval along a movement path of each compression chamber in the both compression chambers, and compression gradients of the both compression chambers are formed to be different from each other, wherein when an interval between a bypass portion closest to the discharge port and another bypass portion adjacent to the bypass portion among the bypass portions of each compression chamber is defined as a first interval, respectively, a first interval of a second bypass portion belonging to a compression chamber having a relatively larger compression gradient is formed to be smaller than that of a first bypass portion belonging to the other compression chamber between the both compressor chambers.

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Номер записи: 72
22-03-2018 дата публикации

CO-ROTATING SCROLL COMPRESSOR HAVING BACK PRESSURE STRUCTURE

Номер: US20180080446A1
Автор: CHOI Yoonsung, Kim Jinho, Lee Byeongchul, YOO Byung-Kil
Принадлежит:

A co-rotating scroll compressor is provided in which pressure differences between inner and outer portions of a suction chamber are maintained, back pressures are applied to rear surfaces of end plates of a drive scroll and a driven scroll in directions in which the two scrolls are moved toward each other to prevent compression leakage of a fluid, and a lubricant oil is easily supplied to the two scrolls using the back pressures. The co-rotating scroll compressor may include pressure seals between the rear surfaces of the end plates of the drive scroll and the driven scroll and an inner wall of the suction chamber such that the two scrolls are pressed in directions to be moved toward each other by the back pressures, and the oil is supplied to rotary supports and close contact portions of the two scrolls using the back pressures. 1. A co-rotating scroll compressor , comprising:a frame including a suction chamber provided with a suction port;a first scroll and a second scroll having wraps disposed to face each other in the suction chamber and rotary shafts which are eccentric relative to each other, wherein the first scroll and the second scroll rotate relative to each other in a same direction, compress a fluid suctioned into the suction chamber, and discharge the compressed fluid to an outside of the suction chamber;a first compression seal formed between a rear surface of an end plate of the first scroll and an inner wall of the suction chamber; anda second pressure seal formed between a rear surface of an end plate of the second scroll and the inner wall of the suction chamber, wherein a pressure of the fluid discharged by the first scroll and the second scroll does not leak to a pressure of the fluid in the suction chamber due to the pressure seals, and wherein the discharge pressure is applied to the end plates to press the first scroll and the second scroll in directions in which the first scroll and the second scroll are moved toward each other.2. The co- ...

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Номер записи: 73
24-03-2016 дата публикации

Negative Pressure Pump and Cylinder Head Cover

Номер: US20160084252A1
Автор: Nobushi Yamazaki
Принадлежит: Sanoh Industrial Co Ltd

A negative pressure pump has: a housing; a rotating shaft having a shaft portion, and a supporting portion ; a vane that is supported at the supporting portion so as to freely move reciprocally in a direction orthogonal to the rotating shaft, and that rotates integrally with the rotating shaft, and whose end portions slide on an inner wall surface, and that sections an interior of the housing into plural spaces; an intake portion that is formed in the housing; a discharging portion that is formed further toward a vane rotating direction downstream side than the intake portion; and a concave portion that is formed in a bottom surface between the discharging portion and a curved surface in a vane rotating direction, and that communicates with a circular hole, and guides the lubricant, that is moved by the vane, to the circular hole.

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Номер записи: 74
31-03-2022 дата публикации

MOTOR DRIVEN COMPRESSOR APPARATUS INCLUDING SWING PIN

Номер: US20220099092A1
Автор: Park In Won
Принадлежит:

A motor driven compressor apparatus includes a rotary shaft rotatably supported in a housing, an eccentric bushing eccentrically coupled to the rotary shaft, and a swing pin configured to connect the eccentric bushing and the rotary shaft with each other, wherein the rotary shaft is provided with a flow path configured to pass through the center of a cross-section in the longitudinal direction and, in one direction at which the eccentric bushing is disposed, a first pin insertion hole which communicates with the flow path and into which the swing pin is inserted, the eccentric bushing is provided with a second pin insertion hole into which the swing pin is inserted in the other direction at which the rotary shaft is disposed, and refrigerant leaks between the swing pin and the first pin insertion hole. 1. A motor driven compressor apparatus comprising:a rotary shaft rotatably supported in a housing;an eccentric bushing eccentrically coupled to the rotary shaft; anda swing pin configured to connect the eccentric bushing and the rotary shaft with each other, wherein the rotary shaft is provided with a flow path configured to pass through a center of a cross-section in the longitudinal direction and, in one direction in which the eccentric bushing is disposed, a first pin insertion hole that communicates with the flow path and into which the swing pin is inserted,wherein the eccentric bushing is provided with a second pin insertion hole into which the swing pin is inserted in the other direction in which the rotary shaft is disposed, andwherein refrigerant is configured to leak between the swing pin and the first pin insertion hole.2. The motor driven compressor apparatus of claim 1 , further comprising:a center plate fixed to an inside of the housing;an orbiting scroll disposed in one direction of the eccentric bushing and s configured to orbit by the rotary shaft; anda back pressure chamber surrounded by the center plate between the center plate and the orbiting ...

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Номер записи: 75
31-03-2022 дата публикации

SCROLL COMPRESSOR

Номер: US20220099094A1
Автор: CHOI Yongkyu, KIM Taekyoung, PARK JUNGHOON
Принадлежит:

A scroll compressor includes an oil circulation pipe having one end inserted through a casing to be connected to an oil storage space inside the casing and another end connected to a suction passage for supplying refrigerant from outside of the casing to a compression chamber, an oil circulation valve disposed between the both ends of the oil circulation pipe to selectively open or close the oil circulation pipe, and a controller to control an opening or closing operation of the oil circulation pipe to reduce or eliminate frictional loss due to a shortage of oil by adjusting an oil level of the oil storage space at an initial operation. 1. A scroll compressor comprising:a casing that defines an oil storage space in a lower portion of an inner space of the casing;a motor disposed in the inner space of the casing;a fixed scroll disposed within the inner space of the casing, wherein the motor and the fixed scroll are arranged along an axial direction;an orbiting scroll engaged with the fixed scroll and configured to perform an orbiting motion relative to the fixed scroll, the orbiting scroll being configured to define a compression chamber together with the fixed scroll during the orbiting motion;a rotating shaft coupled to the motor and to the orbiting scroll;a refrigerant suction pipe that is connected from an outside of the casing to the compression chamber through the casing, the refrigerant suction pipe defining a suction passage configured to supply refrigerant from the outside of the casing to the compression chamber;an oil circulation pipe having a first end connected to the oil storage space through the casing and a second end connected to the suction passage;an oil circulation valve disposed between the first end and the second end of the oil circulation pipe, the oil circulation valve being configured to selectively open and close the oil circulation pipe; anda controller configured to control the oil circulation valve to be selectively opened and closed.2. ...

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Номер записи: 76
29-03-2018 дата публикации

Improved volumetric compressor

Номер: US20180087510A1
Автор: Virgilio Mietto
Принадлежит: Individual

A compression device compresses a gas by means of a compression fluid includes a compression chamber for the generation of a compressed mixture of the gas and the compression fluid. A first driving compression rotor and a second compression rotor mesh with each other and are housed inside the compression chamber. The first driving rotor includes an end that projects from a wall of the compression chamber. A power source includes a transmission shaft suited to be set rotating by the power source. A transmission unit is interposed between the power source and the first driving rotor in such a way as to transmit the rotation of the transmission shaft to the first driving rotor. Containment means define a housing chamber to house the transmission unit. The wall of the compression chamber is at least partially defined by a wall of the containment means of the transmission unit.

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Номер записи: 77
29-03-2018 дата публикации

FLUID MACHINE FOR VEHICLE

Номер: US20180087511A1
Автор: Fukaya Yoshihiro, Fukutani Yoshikazu, KUMA Hirofumi, TSUBAI Shinji
Принадлежит: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI

A fluid machine for a vehicle includes a rotary shaft, an electric motor having a coil, a drive circuit, and a housing having therein a motor chamber and a circuit chamber. The housing includes a partitioning wall partitioning between the motor chamber and the circuit chamber and a peripheral wall extending from the partitioning wall. The partitioning wall and the peripheral wall form the circuit chamber. The drive circuit includes a circuit board having a surface and an electronic component mounted on the surface of the circuit board. A connecting terminal is disposed extending through the partitioning wall and electrically connecting the coil with the drive circuit. A mounting lug is formed extending from the peripheral wall so as to mount the housing to the vehicle. The electronic component, the connecting terminals and the mounting lug are disposed in this order in the radial direction of the rotary shaft. 1. A fluid machine for a vehicle comprising:a rotary shaft;an electric motor rotating the rotary shaft and having a coil;a drive circuit driving the electric motor; anda housing having therein a motor chamber that accommodates therein the electric motor and a circuit chamber that accommodates therein the drive circuit, the motor chamber and the circuit chamber being disposed along an axial direction of the rotary shaft, whereinthe housing includes a partitioning wall that partitions between the motor chamber and the circuit chamber and a peripheral wall that extends from the partitioning wall in the axial direction of the rotary shaft, and the partitioning wall and the peripheral wall cooperate to form the circuit chamber,the drive circuit includes a circuit board having a surface that faces the partitioning wall and an electronic component mounted on the surface of the circuit board,the fluid machine has a connecting terminal disposed extending through the partitioning wall and electrically connecting the coil with the drive circuit,a mounting lug is formed ...

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Номер записи: 78
21-03-2019 дата публикации

ROTARY PUMP DRIVEN MEDICAMENT DELIVERY DEVICE

Номер: US20190085843A1
Автор: Bechtold Herbert, Gabriel Jochen
Принадлежит:

A rotary pump is presented for use in a medicament delivery device, where the pump has a back plate having an inner surface and a rotor housing is positioned adjacent to the back plate having a peripheral wall. A front plate support is connected to the back plate and a flexible front plate is positioned between the front plate support and the rotor housing. The pump is rotated using a planetary gear transmission, where an eccentric shaft is operatively connected to the planetary gear mechanism. A rotor is rotationally fixed to the eccentric shaft and movably positioned within rotor housing. The rotor has three lobes, where each lobe has two peripheral curved surfaces sharing a common apex, where a first portion of each peripheral surface adjacent to the apex defines a non-smooth curve. 1. A pump comprising:a) a back plate having an inner surface;b) a rotor housing positioned adjacent to the back plate and having a peripheral wall;c) a front plate support connected to the back plate;d) a flexible front plate positioned between the front plate support and the rotor housing;e) a planetary gear transmission;e) an eccentric shaft operatively connected to the planetary gear mechanism; andf) a rotor rotationally fixed to the eccentric shaft and movably positioned within rotor housing, the rotor comprising three lobes, where each lobe has two peripheral curved surfaces sharing a common apex, where a first portion of each peripheral surface adjacent to the apex defines a non-smooth curve.2. The pump of where the peripheral wall defines a pump chamber with a trochoidal wall.3. The pump of where the pump chamber comprises a first and second chamber.4. The pump of where the planetary gear transmission comprises:a stationary timing pinion positioned on the back plate; anda ring gear integral with the rotor, where the ring gear has teeth that mesh with cooperating teeth on the timing pinion such that the ring gear rotates eccentrically around the timing pinion.5. The pump of ...

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Номер записи: 79
30-03-2017 дата публикации

A GEAR PUMP HAVING THROUGH-SHAFT BEARING WEEPAGE CONTROL

Номер: US20170089335A1
Автор: Alexander Philip Taylor, Craig Justin A.
Принадлежит: IMO Industries, Inc.

A pump includes a front plate, a gear plate and a rear plate. A drive shaft has a drive gear, an arbor has a driven gear engaged with the drive gear, and first and second bearings are disposed in the gear plate. The first and second bearings receive the drive shaft and the arbor. The rear plate has drain ports adjacent ends of the drive shaft and the arbor. The arbor has an opening such that media that passes between the first bearing and an outer surface of the arbor is directed to the second drain port via the opening. A drain bushing is positioned against the front plate, and includes an opening for the drive shaft. The drain bushing has a chamber and a radial port. When pumped media passes between the first bearing and the drive shaft it is directed to the chamber and out the radial port. 1. A gear pump , comprisinga front plate, a gear plate and a rear plate;a drive shaft having a drive gear;an arbor having a driven gear engaged with the drive gear;first and second bearings disposed in the gear plate, the first and second bearings each having a first opening for receiving the drive shaft and a second opening for receiving the arbor;wherein the rear plate has first and second drain ports disposed adjacent to respective ends of the drive shaft and the arbor; andwherein the arbor has a longitudinal opening such that pumped media that passes between the first bearing and an outer surface of the arbor is directed to the second drain port via the longitudinal opening.2. The gear pump of claim 1 , wherein the pumped media that passes between the first bearing and the outer surface of the arbor is directed in a first direction toward the front plate.3. The gear pump of claim 2 , comprising a gap between an end of the arbor and the front plate such that the pumped media that passes between the first bearing and the outer surface of the arbor is directed into the longitudinal opening in the arbor.4. The gear pump of claim 3 , wherein the longitudinal opening is aligned ...

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Номер записи: 80
30-03-2017 дата публикации

SCROLL COMPRESSOR AND METHOD OF MANUFACTURING THE SAME

Номер: US20170089341A1
Автор: TAKAMURA Yuji
Принадлежит:

A scroll compressor includes a fixed scroll including a spiral unit, an orbiting scroll including a spiral unit and combined with the spiral unit of the fixed scroll to form a compression chamber for compressing refrigerant, a main shaft for transmitting drive power to the orbiting scroll, an electric motor unit configured to rotate the main shaft, and a first balancer for compensating unbalance of the orbiting scroll with respect to a rotation center of the main shaft. The first balancer has an outline in a cylinder shape, and includes a high-density part made of a high-density material, and a low-density part made of a low-density material having a density lower than a density of the high-density material. 1. A scroll compressor comprising:a fixed scroll including a spiral unit;an orbiting scroll including a spiral unit and combined with the spiral unit of the fixed scroll to form a compression chamber for compressing refrigerant;a main shaft for transmitting drive power to the orbiting scroll;an electric motor unit configured to rotate the main shaft; anda first balancer for compensating unbalance of the orbiting scroll with respect to a rotation center of the main shaft,the first balancer having an outline in a cylinder shape, and including a high-density part made of a high-density material, and a low-density part made of a low-density material having a density lower than a density of the high-density material,the low-density part covering an outer peripheral surface of the high-density part.2. The scroll compressor of claim 1 , whereinthe low-density part of the first balancer includes a shaft hole through which the main shaft is provided, a high-density part housing hole for housing the high-density part, and a low-density part fastening hole for fastening with the high-density part,the high-density part of the first balancer includes a high-density part fastening hole for fastening with the low-density part of the first balancer, andpositions of the high- ...

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Номер записи: 81
05-05-2022 дата публикации

SCROLL COMPRESSOR

Номер: US20220136503A1
Автор: Yamada Masahiro
Принадлежит:

A hermetic scroll compressor has a symmetric wrap structure. The scroll compressor includes fixed and movable scrolls, a crank shaft, a motor, and a casing. The casing includes an oil reservoir, and a motor space serving as a low-pressure space. The fixed and movable scrolls define first and second compression chambers. The fixed scroll has a first passage to guide gas refrigerant in the low-pressure space to the first and second compression chambers. The movable scroll has a second passage to guide gas refrigerant in the low-pressure space to the first compression chamber. The gas refrigerant that has passed through the first and second passages flows into the first compression chamber. The gas refrigerant that has passed through the first passage also flows into the second compression chamber.

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Номер записи: 82
05-05-2022 дата публикации

ROTOR PAIR FOR A COMPRESSION BLOCK OF A SCREW MACHINE

Номер: US20220136504A1
Автор: Weih Gerald
Принадлежит:

The invention relates to a rotor pair for a compressor block of a screw machine, wherein the rotor pair comprises a secondary rotor that rotates about a first axis and a main rotor that rotates about a second axis, wherein the number of teeth of the main rotor is 3 and the number of teeth of the secondary rotor is 4. The relative profile depth of the secondary rotor is at least 0.5, preferably at least 0.515, and at most 0.65, preferably at most 0.595. rk1 is an addendum circle radius drawn around the outer circumference of the secondary rotor and rf1 is a dedendum circle radius starting at the profile base of the secondary rotor, wherein the ratio of the axis distance of the first axis from the second axis and the addendum circle radius rk1 is at least 1.636, and at most 1.8, preferably at most 1.733.

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Номер записи: 83
19-03-2020 дата публикации

COMPRESSOR HAVING CENTRIFUGATION AND DIFFERENTIAL PRESSURE STRUCTURE FOR OIL SUPPLYING

Номер: US20200088199A1
Автор: Kim Cheol Hwan, KIM Taekyoung, Lee Byeongchul, Lee Kangwook
Принадлежит:

A scroll compressor is provided capable of supplying oil stored in an oil storage chamber upward through a rotary shaft to supply the oil to a compression device and to lubricate a bearing portion. The scroll compressor may include a casing, a drive motor, a rotary shaft, a main frame, a fixed scroll, and an orbiting scroll. A medium pressure chamber may be formed in or at a middle of the main frame, the fixed scroll, and the orbiting scroll. A pocket groove configured to guide oil discharged through the oil hole to the medium pressure chamber may be formed in an upper surface of the orbiting scroll, and a differential pressure path configured to guide the oil guided to the medium pressure chamber to the compression chamber may be provided in the fixed scroll. 1. A compressor , comprising:a casing having a refrigerant discharge pipe through which the refrigerant is discharged and a storage oil space in which oil is stored;a drive motor provided in the inner space of the casing;a rotating shaft coupled to the driving motor to supply the oil;a orbiting scroll which is coupled to the rotating shaft and provided to orbital movement based on that the rotating shaft rotates;a fixed scroll provided in engagement with the orbiting scroll to receive the refrigerant and compress and discharge the refrigerant;a main frame provided to be seated on the fixed scroll to accommodate the orbiting scroll;wherein the rotation shaft is provided to penetrate the main frame and the orbiting scroll, and extends from the driving motor to the storage oil space, wherein the rotating shaft includes an oil passage through which the oil moves, and an oil hole communicating with the oil passage through an outer circumferential surface of the rotating shaft, wherein the fixed scroll includes a differential pressure oil supply path for guiding oil discharged from the oil hole into area between the orbiting scroll and the fixed scroll.2. The compressor according to claim 1 , wherein the fixed ...

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Номер записи: 84
07-04-2016 дата публикации

Pump unit

Номер: US20160097388A1
Автор: Dieter Amesoeder, Evgenij Skrynski, Ingo Nowitzky, Marian Kacmar, Oliver Laforsch, Sando Kunath
Принадлежит: ROBERT BOSCH GMBH

Pump units are known that have a drive shaft and a rotor, which is driven by the drive shaft and is arranged rotatably in a housing, the drive shaft having an oblique sliding plane, which interacts with the rotor and allows the rotor to nutate with the rotor axis thereof about a drive axis of the drive shaft, the rotor having a set of teeth on the end face of the rotor facing away from the drive shaft, said teeth meshing with a set of teeth formed on a housing of the pump unit, working spaces being formed between the teeth of the rotor and the teeth of the housing, which working spaces can be filled via an inlet and emptied via an outlet. It is disadvantageous that the pump unit has a comparatively large axial installation length, because the drive of the pump unit is arranged on an end of the drive shaft facing away from the rotor. In the pump unit according to the invention, the axial installation length is shortened. According to the invention the drive shaft ( 1 ) is surrounded by a stator ( 15 ) and magnets ( 16 ) are provided on the drive shaft ( 1 ), which magnets interact magnetically with the stator ( 15 ).

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Номер записи: 85
06-04-2017 дата публикации

Pump and motor combination

Номер: US20170097001A1
Автор: Alexander Hahn, Tobias Ott
Принадлежит: Ebm Papst St Georgen GmbH and Co KG

A pump-motor combination features a motor ( 30 ) and a pump ( 20 ). The pump has a first rotor ( 21 ) and a first housing 300 ). The motor is an electric motor ( 30 ) having a second rotor ( 31 ), a stator ( 33 ) and a second housing ( 32 ). The first (pump) rotor ( 21 ) is at least partially coupled, and the second (motor) rotor ( 31 ) is completely coupled, to a common rotating shaft ( 40 ), in order to enable transmission of rotation of the second (motor) rotor ( 31 ) to the first (pump) rotor ( 21 ). The structure has significant advantages when installed with the gearbox (G) or transmission of a motor vehicle, to assure supply of lubricant ( 360 ) when a primary lubricant pump ( 350 ) has not been operating, for example, upon start-up. Use of the common shaft ( 40 ) minimizes frictional losses during operation and reduces the cost of manufacture, since fewer bearings are needed, compared to the prior art.

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Номер записи: 86
06-04-2017 дата публикации

Scroll Compressor Lower Bearing

Номер: US20170097048A1
Автор: ALTSTADT Nicholas J., KNOTH Daniel J.
Принадлежит: EMERSON CLIMATE TECHNOLOGIES, INC.

A compressor includes a shell, a motor assembly, a driveshaft, and a bearing assembly. The bearing assembly is disposed within the shell and supports the driveshaft for rotation. The bearing assembly includes a bracket, a hub, and a bushing. The bracket is coupled to the shell and includes an aperture. The hub is disposed within the aperture and defines a bore having a radially inwardly extending lip. The bushing includes a proximal portion and a distal portion. The distal portion of the bushing includes a plurality of radially extending engagement features. The distal portion of the bushing is disposed within the bore of the hub such that the engagement features engage the lip of the hub. 1. A compressor comprising:a shell;a compression mechanism disposed within the shella motor assembly disposed within the shell;a driveshaft drivingly engaged with the motor and the compression mechanism for rotation about an axis, the driveshaft extending from a proximal end to a distal end, the distal end having an axially extending passage; a bracket coupled to the shell and having an aperture;', 'a hub disposed within the aperture and extending from a proximal end to a distal end, the hub defining a bore extending from the proximal end of the hub to the distal end of the hub, the bore including a proximal portion defining a first diameter, a distal portion defining a second diameter that is greater than the first diameter, and a radially inwardly extending lip defining a third diameter that is less than the first and second diameters; and', 'a bushing having a proximal portion and a distal portion, the distal portion of the bushing having a plurality of radially extending engagement features, the proximal portion of the bushing disposed within the distal portion of the bore, the distal portion of the bushing disposed within the distal portion of the bore such that the engagement features engage the lip of the hub., 'a bearing assembly disposed within the shell and supporting ...

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Номер записи: 87
12-04-2018 дата публикации

SUPERCHARGER HAVING ROTOR WITH PRESS-FIT STUB SHAFTS

Номер: US20180100506A1
Автор: Meyers Andrew, Ouwenga Daniel, Rienas Kenneth
Принадлежит: EATON CORPORATION

A supercharger constructed in accordance to one example of the present disclosure includes a housing, a first rotor, a second rotor and a rotor shaft assembly. The first and second rotors are received in cylindrical overlapping chambers of the housing. The first rotor has a central longitudinal passage. The rotor shaft assembly rotatably supports the first rotor and includes a first rotor shaft and a separate and distinct second rotor shaft. The first and second rotor shafts are press-fit into the central passage defined in the first rotor. 1. A supercharger comprising:a housing;a first rotor and a second rotor received in cylindrical overlapping chambers of the housing, the first rotor having a central longitudinal passage; anda rotor shaft assembly rotatably supporting the first rotor and including a first rotor shaft and a separate and distinct second rotor shaft, wherein the first and second rotor shafts are press-fit into the central longitudinal passage defined in the first rotor.2. The supercharger of wherein the first and second rotor shafts are stub shafts.3. The supercharger of wherein the first and second rotor shafts are offset from each other in the central longitudinal passage.4. The supercharger of claim 1 , further comprising:a front bearing disposed in the housing that supports the first rotor shaft;a rear bearing disposed in the housing that supports the second rotor shaft.5. The supercharger of wherein the first rotor shaft includes a first insertion portion that is received by the central longitudinal passage claim 4 , an intermediate seal engaging portion configured to be engaged by a seal claim 4 , a front bearing engaging portion that is supported by the front bearing claim 4 , and an isolator engaging portion that is configured to engage a timing gear.6. The supercharger of wherein the second rotor shaft includes a second insertion portion that is received by the central longitudinal passage and a rear bearing engaging portion that is ...

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Номер записи: 88
12-04-2018 дата публикации

BEARING PLATE FOR SUPERCHARGER

Номер: US20180100544A1
Автор: HOPKINS Justin, Swartzlander Matthew
Принадлежит: EATON CORPORATION

A supercharger constructed in accordance to one example of the present disclosure includes a housing, first and second rotors, a bearing plate and a pair of sleeves. The first and second rotors are received in cylindrical overlapping chambers of the housing, the first rotor supported by a first rotor shaft, the second rotor supported by a second rotor shaft. The bearing plate is coupled to the housing and has an oil cavity side and an air cavity side. The bearing plate is formed of aluminum. The pair of sleeves can be received by the bearing plate and support respective bearings rotatably supporting respective first and second axle shafts. The pair of sleeves are formed of steel. 1. A supercharger comprising:a housing;a first rotor and a second rotor received in cylindrical overlapping chambers of the housing, the first rotor supported by a first rotor shaft, the second rotor supported by a second rotor shaft; anda bearing plate coupled to the housing and having an oil cavity side and an air cavity side, the bearing plate formed of aluminum; anda pair of sleeves received by the bearing plate and that support respective bearings rotatably supporting the respective first and second axle shafts, wherein the pair of sleeves are formed of steel.2. The supercharger of wherein the bearings are press-fit into the sleeves.3. The supercharger of wherein outer races of the bearings are formed of steel whereby thermal expansion and contraction properties are similar to the sleeves such that the press-fit is maintained throughout thermal expansion and contraction events.4. The supercharger of wherein the sleeves each have a raised lip formed around an inner diameter thereof claim 3 , wherein the raised lips provide an axial barrier from the respective bearings.5. The supercharger of wherein the bearing plate further comprises a pair of seal pockets claim 1 , each seal pocket configured to receive a seal.6. The supercharger of wherein the sleeves are cast into the bearing plate ...

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Номер записи: 89
13-04-2017 дата публикации

METHODS FOR MAKING A LOW INERTIA LAMINATED ROTOR

Номер: US20170101989A1
Автор: EYBERGEN William Nicholas, FORTINI Matthew James, Killian Michael Lee, Spring James Kevin
Принадлежит:

A rotor assembly having a plurality of rotor plates mounted to a shaft, and methods of construction for a rotor assembly are disclosed. Each rotor plate in the assembly may be provided with a central opening extending between the first and second sides through which the shaft extends. In one aspect, the rotor plates are provided with a plurality of lobes extending away from the central opening, wherein each of the lobes has a lobe opening extending through the thickness of the plates. In one embodiment, the rotor plates are rotationally stacked to form a helical rotor. 1. A method of making a laminated rotor , the method comprising the steps of:a. providing a plurality of rotor plates, each of the plates having a plurality of lobes extending radially away from a central opening and a first indexing feature;b. providing a mandrel having a second indexing feature;c. stacking each of the rotor plates onto the mandrel such that the mandrel extends through the central opening of each plate and such that the rotor plate first indexing feature is aligned with the mandrel second indexing feature;d. securing the rotor plates together;e. removing the mandrel from the rotor plates; andf. inserting a shaft into the central openings of the rotor plates.2. The method of making a laminated rotor of claim 1 , wherein the step of providing a plurality of rotor plates includes providing at least some of the rotor plates with openings in the rotor plate lobes.3. The method of making a laminated rotor of claim 1 , wherein the step of securing the rotor plates together includes welding the rotor plates together.4. The method of making a laminated rotor of claim 1 , further including the step of burring the shaft before the step of inserting the shaft into the central openings of the rotor plates.5. The method of making a laminated rotor of claim 1 , wherein the step of inserting a shaft is performed after the step of securing the rotor plates together.6. The method of making a laminated ...

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Номер записи: 90
08-04-2021 дата публикации

Vacuuming device and vacuum apparatus

Номер: US20210102537A1
Автор: Hong Wang, Yusheng Wang
Принадлежит: Individual

A vacuuming device comprises a main body, a rotary shaft, a vacuum pump rotor, a motor stator and a motor rotor. An air inlet, an air outlet, an oil storage chamber and a motor chamber are disposed in the main body. The oil storage chamber communicates with the air outlet. The rotary shaft is rotationally connected to the main body. The vacuum pump rotor is fixedly mounted to the rotary shaft and cooperatively forms a stator cavity of the vacuum pump with the inner-wall of the main body. The air inlet and the oil storage chamber communicate with the stator cavity of the vacuum pump respectively. The vacuuming device reduces the cost of manufacturing, optimizes the spatial structure and downsizes the device.

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Номер записи: 91
19-04-2018 дата публикации

INTERNAL COMBUSTION ENGINE HAVING AT LEAST ONE CRANKCASE OF THE DRY-SUMP TYPE

Номер: US20180106170A1
Автор: GAVANIER Pierre, HUBERT Pierre-Julien, Mercier Christian
Принадлежит: AIRBUS HELICOPTERS

An internal combustion engine having at least one crankcase for defining a guide housing in which at least one crankshaft is guided in rotation about an axis of rotation and lubricated by a lubricating fluid, the at least one crankcase being of the “dry-sump” type. Such an internal combustion engine has at least two pumps forming a pump train of pumps on a common axis, the pump train being fitted in a cylindrical bore of the at least one crankcase. 1. An internal combustion engine having at least one crankcase for defining a guide housing in which at least one crankshaft is guided in rotation about an axis of rotation and lubricated by a lubricating fluid , the at least one crankcase being of the “dry-sump” type , such an internal combustion engine comprising:a tank of lubricating fluid separate from the at least one crankcase;at least two pumps forming a pump train of pumps on a common axis and serving to pump a mixture formed by the lubricating fluid and gas at least from the at least one crankcase, the at least two pumps each respectively comprising an inner lobe rotor and an outer lobe rotor, the inner lobe rotor being rotatable about a first axis of rotation and the outer lobe rotor being rotatable about a second axis of rotation parallel to the first axis of rotation, each inner lobe rotor of the pump train being driven in rotation by a common drive shaft rotatable about the first axis of rotation, each outer lobe rotor of the pump train being driven in rotation by an inner lobe rotor of the pump train, and the pump train being fitted in a cylindrical bore of the at least one crankcase, the cylindrical bore having an axis coinciding with the second axis of rotation and distinct from the first axis of rotation; andat least one pipe enabling the at least one crankcase to be put into fluid flow communication with the at least two pumps and the tank of lubricating fluid;wherein the common drive shaft comprises a driving inner shaft and a hollow outer shaft driven ...

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Номер записи: 92
29-04-2021 дата публикации

Pressure reducer for rotary internal combustion engine

Номер: US20210123345A1
Автор: Samuel MOUSSA
Принадлежит: Cogenergy Suisse SA

A pressure reducer for a rotary internal combustion engine comprises a housing ( 1 ) accommodating a first shaft ( 6 ) and a second shaft ( 8 ) running parallel to each other through the housing ( 1 ), and a first rotor ( 7 ) on the first shaft ( 6 ) and a second rotor ( 9 ) on the second shaft ( 8 ). The first rotor ( 7 ) and the second rotor ( 9 ) are configured in a meshing arrangement, when the first shaft ( 6 ) and the second shaft ( 8 ) rotate in counter direction to each other. The first rotor ( 6 ) comprises several radial extensions ( 10 ) having convex shaped outer flanks ( 11 ), and the second rotor ( 9 ) comprises several radial wings ( 13 ) defining indentations ( 14 ) between two wings ( 13 ) having a concave shaped surface ( 15 ). A pressure expansion chamber ( 17 ) is defined by a volume between a convex shaped flank ( 11 a ) of an extension ( 10 a ) of the first rotor ( 7 ) and a concave shaped surface ( 15 a ) of an indentation ( 14 a ) of the second rotor ( 9 ), such that an outer tip ( 12 a ) of the radial extension ( 10 a ) abuts on the concave shaped surface ( 15 a ) of the indentation ( 14 a ) and an outer edge ( 16 a ) of the indentation ( 14 a ) abuts on the convex shaped flank ( 11 a ) of the extension ( 10 a ). In rotation the tip ( 12 a ) slides over the concave surface ( 15 a ) of the indentation ( 14 a ) and the edge ( 16 a ) of the indentation ( 14 a ) slides along the convex flank ( 11 a ), thereby expanding the volume of the pressure expansion chamber ( 17 ).

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Номер записи: 93
29-04-2021 дата публикации

SCREW SPINDLE PUMP

Номер: US20210123437A1
Автор: BRÜTTING Susanne, Richter Ralf
Принадлежит:

A screw spindle pump, comprising a pump housing having a lead screw received therein and at least one running spindle which meshes with said lead screw, as well as a connector housing which is placed onto the pump housing and has a suction connector and a pressure connector, the two latter fluidically communicating with a suction inlet and a pressure outlet of the pump housing, wherein the connector housing is composed of a first housing part and a second housing part, one of the two latter having the suction connector and the other having the pressure connector, both said housing parts being rotatable relative to the pump housing and both being rotatable relative to one another. 1. A screw spindle pump , comprising a pump housing having a lead screw received therein and at least one running spindle which meshes with said lead screw , as well as a connector housing which is placed onto the pump housing and has a suction connector and a pressure connector , the two latter fluidically communicating with a suction inlet and a pressure outlet of the pump housing , wherein the connector housing is composed of a first housing part and a second housing part , one of the two latter having the suction connector and the other having the pressure connector , both said housing parts being rotatable relative to the pump housing and both being rotatable relative to one another.2. A screw spindle pump according to claim 1 , wherein each housing part is rotatable relative to the pump housing by at least 45°.3. A screw spindle pump according to claim 2 , wherein each housing part is rotatable relative to the pump housing by 360°.4. A screw spindle pump according to claim 1 , wherein sealing elements by way of which the housing parts are mutually sealed and at least one housing part is also sealed in relation to the pump housing.5. A screw spindle pump according to claim 4 , wherein the housing part that has the suction connector is sealed in relation to the housing part that has the ...

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Номер записи: 94
02-04-2020 дата публикации

Scroll compressor with wrap having gradually decreasing thickness

Номер: US20200102957A1
Автор: Cheolhwan Kim, Howon Lee, Jungsun Choi
Принадлежит: LG ELECTRONICS INC

A scroll compressor is provided that may include a casing; a drive motor provided at an inner space of the casing; a rotational shaft coupled to a rotor of the drive motor, and rotated together with the rotor; a frame provided below the drive motor; a fixed scroll provided below the frame, and having a fixed wrap; and an orbiting scroll provided between the frame and the fixed scroll, having an orbiting wrap so as to form a compression chamber including a suction chamber, an intermediate pressure chamber, and a discharge chamber, by being engaged with the fixed wrap. In a state in which a center of the fixed scroll and a center of the orbiting scroll are substantially the same, an interval between the fixed wrap and the orbiting wrap gradually increases towards the suction chamber from the discharge chamber.

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Номер записи: 95
26-04-2018 дата публикации

ROTOR PAIR FOR A COMPRESSION BLOCK OF A SCREW MACHINE

Номер: US20180112663A2
Автор: Weih Gerald
Принадлежит:

The invention relates to a rotor pair for a compressor block of a screw machine, wherein a rotor pair comprises a secondary rotor that rotates about a first axis and a main rotor that rotates about a second axis, wherein the number of teeth of the main rotor is 3 and the number of teeth f the secondary rotor is 4. The relative profile depth of the secondary rotor is at least 0.5, preferably at least 0.515, and at most 0.65, preferably at most 0.595. rk is an addendum circle radius drawn around the outer circumference of the secondary rotor and rf is a dedendum circle radius starting at the profile base of the secondary rotor, wherein the ratio of the axis distance of the first axis from the second axis and the addendum circle radius rk is at least 1.636, and at most 1.8, preferably at most 1.733. 21. The rotor pair according to claim 1 , wherein in a transverse sectional view claim 1 , circular arcs B claim 1 , B claim 1 , Brunning within a secondary rotor tooth are defined claim 1 , a common centre point of which is given by an axis C claim 1 , wherein a radius rof Ba the value r=rf+0.25*(rk−rf) claim 1 , the radius rof Bhas a value r=rf+0.5*(rk−rf) claim 1 , and a radius rof Bhas a value r=rf+0.75*(rk−rf) claim 1 , and wherein the circular arcs B claim 1 , B claim 1 , Bare each delimited by the leading tooth flank Fand trailing tooth flank F claim 1 , wherein tooth thickness ratios are defined as ratios of arc lengths b claim 1 , b claim 1 , bof the circular arcs B claim 1 , B claim 1 , Bwith ε=b/band ε=b/bwherein: 0.65≤ε<1.0 and/or 0.50≤ε≤0.85 claim 1 , preferably 0.80≤ε<1.0 and/or 0.50≤ε≤0.79.312512552115221. The rotor pair according to wherein in a transverse sectional view claim 1 , foot points F and F are defined between an observed tooth of the secondary rotor and a respectively adjacent tooth of the secondary rotor and an apex point F is defined at a radially outermost point of the tooth claim 1 , wherein a triangle Dis defined by F claim 1 , F and F and ...

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Номер записи: 96
09-06-2022 дата публикации

SCROLL COMPRESSOR AND AIR CONDITIONER HAVING THE SAME

Номер: US20220178371A1
Автор: CHOI Yongkyu, LEE Jaeha, LEE Minho
Принадлежит:

A scroll compressor includes a motor portion fixed in an inner space of a casing, a compression portion fixed to the inner space of the casing at one side of the motor portion in an axial direction, a rotation shaft to transmit a driving force from the motor portion to the compression portion, and a flow path guide provided in a discharge space between the motor portion and the compression portion and provided with a guide outlet communicating with the discharge space and opened in a direction toward the rotation shaft. Therefore, most of refrigerant discharged to the discharge space through the flow path guide is moved toward an air gap to enhance an oil separation effect, and thus a normal operation point of the air conditioner can be accelerated. 1. A scroll compressor comprising:a casing defining an inner space;a motor including (i) a stator that is fixed in the inner space of the casing and defines a first recovery passage extending between opposite ends of the stator in an axial direction, and (ii) a rotor that is configured to rotate relative to the stator, wherein a gap is defined between the rotor and the stator;a compression portion fixed in the inner space of the casing and including a plurality of scrolls, the compression portion defining a discharge passage that is configured to discharge refrigerant compressed by a motion of the plurality of scrolls relative to the inner space of the casing, wherein the discharge passage extends radially with respect to the gap between the rotor and the stator;a rotation shaft configured to be rotated by the motor and drive the compression portion; anda flow path guide positioned at a discharge space between the motor and the compression portion and including a guide outlet that is in fluid communication with the discharge space and opened in a direction toward the rotation shaft.2. The scroll compressor of claim 1 , wherein the flow path guide includes a guide inlet that is radially spaced apart from the guide outlet ...

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Номер записи: 97
13-05-2021 дата публикации

Rotating heating chamber apparatus and method of use thereof

Номер: US20210140317A1
Автор: Merton W. Pekrul
Принадлежит: Individual

The invention comprises a method for heating a fluid in an engine, including: a rotor rotating relative to a stator about a shaft and a set of vanes extending radially outward, relative to an elongated axis of the shaft, between the rotator and the stator, the set of vanes separating a set of expansion chambers, where the method comprises the steps of: (1) applying a shear force to the fluid to form a gas with a rotatable chamber within the shaft of the engine; and (2) exhausting the gas from the shaft to a rotor-vane chamber, the rotor-vane chamber comprising a void in a vane slot on a shaft side of a first vane, of the set of vanes. Optionally, the gas applies a rotation force by passing the gas from the first vane to a trailing expansion chamber of the set of expansion chambers.

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Номер записи: 98
13-05-2021 дата публикации

Pump Assembly

Номер: US20210140427A1
Автор: De Nicolò Alessandro, Franceschi Omar, Hecher Heinrich, Innerbichler Matthias, Malogowski Tomasz, Steiner Arno
Принадлежит:

A pump assembly, which comprises at least one housing and two gear wheels as transfer means as well as a drive shaft. The housing comprises at least one base and one cover element, which can be connected together in order to constitute a pressure chamber. Each of the two gear wheels has a toothing on an outer circumferential surface and mesh with one another via the toothing in order to transfer a fluid. The gear wheels are arranged in an axial direction between the base and the cover element in the pressure chamber. The drive shaft extends into the housing in the axial direction via an opening in the cover element. The first gear wheel is arranged on a first bearing bush, wherein the first bearing bush is mounted only in the base. The first gear wheel is connected to the drive shaft via a formfitting connection in a circumferential direction. 2. The pump assembly as claimed in claim 1 , wherein the drive shaft is arranged in a radial direction with a free clearance with respect to the first gear wheel and the first bearing bush.3. The pump assembly as claimed in claim 1 , wherein the drive shaft is arranged mounted exclusively outside the housing with respect to a force acting in a radial direction.4. The pump assembly as claimed in claim 1 , wherein the formfitting connection is constituted by an inner circumferential surface of the first gear wheel and an outer circumferential surface of the drive shaft.5. The pump assembly as claimed in claim 1 , wherein the drive shaft and the first gear wheel or the drive shaft and the first bearing bush constitute an abutment against displacement in the axial directions.6. The pump assembly as claimed in claim 1 , wherein the first bearing bush is connected to the base via a press fit.7. The pump assembly as claimed in claim 1 , wherein the first bearing bush is connected in an integrally bonded manner to and formed integrally with the base.8. The pump assembly as claimed in claim 1 , wherein at least the base and the cover ...

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Номер записи: 99
13-05-2021 дата публикации

PUMP HOUSING

Номер: US20210140428A1
Автор: DICKS Norman, Griesdorn Marcel, MOTTTYLL Stephan
Принадлежит:

A pump housing () for an eccentric screw pump, comprising a housing casing () extending along a housing longitudinal axis (L), a first end-face opening (), to which a shaft seal () for a connection shaft () can be connected, and a second end-face opening (), to which a stator (I) can be connected, and comprising a tubular inlet nozzle (), oriented transversely to the housing longitudinal axis (L), for feeding a medium that is to be conveyed, which inlet nozzle is connected to the housing casing () tangentially, offset in relation to the housing longitudinal axis (L). The geometry of the inlet nozzle () is designed in such a way that, as the medium flows into the housing interior through the inlet nozzle (II), a flow (S) is generated which has a radial direction component (RI) directed away outwardly from the housing longitudinal axis (L) and/or an axial direction component (R) directed towards the first end-face opening (). 1. A pump housing for an eccentric screw pump , the housing comprising:a casing extending along a housing axis,a connecting shaft in the casing,a shaft seal at an upstream end of the casing and surrounding the connecting shaft,a stator mounted at a downstream end connectable of the casing, anda tubular inlet fitting for the housing, projecting transversely from the housing axis for supplying a medium to be conveyed, the shape of the inlet fitting being such that a flow of medium into the housing through the inlet fitting in an inflow direction that has a flow component directed radially outward from the housing axis and/or a flow component directed axially toward the first upstream end.2. The pump housing according to claim 1 , wherein the casing is essentially cylindrical at least adjacent the inlet fitting.3. The pump housing according to claim 1 , wherein an inner cross-sectional area of the inlet fitting tapers at least partially toward the casing.4. The pump housing according to claim 3 , wherein an output cross-sectional area of the inlet ...

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Номер записи: 100