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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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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 12. Отображено 12.
04-10-2011 дата публикации

Device to relieve thrust load in a rotor-bearing system using permanent magnets

Номер: US0008030814B2
Автор: Lin Xiang Sun, Huai Lu Lin, SUN LIN XIANG, LIN HUAI LU
Принадлежит: Danfoss Turbocor Compressors B.V., DANFOSS TURBOCOR COMPRESSORS B V, DANFOSS TURBOCOR COMPRESSORS B.V.

The present invention provides a device and a method to enhance thrust load capacity in a rotor-bearing system. The load-enhancing device comprises a stator and a rotor arranged in such as way as to achieve a magnetic thrust load capacity enhancement by employing at least one permanent magnet, which produces an attracting force or an expulsing force between the rotor and the stator.

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Номер записи: 1
31-07-2014 дата публикации

CENTRIFUGAL COMPRESSOR WITH EXTENDED OPERATING RANGE

Номер: US20140208788A1
Автор: Joost Brasz, Mogens Rasmussen, BRASZ JOOST, RASMUSSEN MOGENS
Принадлежит: DANFOSS TURBOCOR COMPRESSORS B.V.

This disclosure relates to a centrifugal compressor. In a first example, the compressor includes a first impeller provided in a main refrigerant flow path, a second impeller provided in the main refrigerant flow path downstream of the first impeller, and a recirculation flow path. In the first example, the recirculation flow path is provided between a first location and a second location along the main refrigerant flow path. The first location is downstream of the second location, and the second location is downstream of the first impeller. In a second example, the compressor includes an impeller provided in a main refrigerant flow path, and a recirculation flow path provided between a first location and a second location along the main refrigerant flow path. In the second example, the recirculation flow path includes a recirculation volute. Further disclosed is a method for operating a centrifugal compressor. 1. A centrifugal compressor , comprising:a first impeller provided in a main refrigerant flow path;a second impeller provided in the main refrigerant flow path downstream of the first impeller; anda recirculation flow path provided between a first location and a second location along the main refrigerant flow path, the first location being downstream of the second impeller, the second location being downstream of the first impeller.2. The compressor as recited in claim 1 , wherein the compressor includes a first vaned diffuser downstream of the first impeller claim 1 , the second location adjacent the first vaned diffuser.3. The compressor as recited in claim 2 , wherein the compressor includes an outlet volute downstream of the second impeller claim 2 , the first location adjacent the outlet volute.4. The compressor as recited in claim 2 , wherein a plurality of recirculation nozzles are provided in the recirculation flow path claim 2 , each of the recirculation nozzles having an outlet arranged adjacent the first vaned diffuser.5. The compressor as recited ...

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Номер записи: 2
21-09-2010 дата публикации

Device to relieve thrust load in a rotor-bearing system using permanent magnets

Номер: US0007800268B2
Автор: Lin Xiang Sun, Huai Lu Lin, SUN LIN XIANG, LIN HUAI LU
Принадлежит: Danfoss Turbocor Compressors B.V., DANFOSS TURBOCOR COMPRESSORS B, DANFOSS TURBOCOR COMPRESSORS B.V.

The present invention provides a device and a method to enhance thrust load capacity in a rotor bearing system. The load-enhancing device comprises a stator and a rotor arranged in such as way as to achieve a magnetic thrust load capacity enhancement by employing a number of permanent magnets, which produce an attracting force of an expulsing force between the rotor and the stator.

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Номер записи: 3
05-07-2016 дата публикации

Two-stage centrifugal compressor with extended range and capacity control features

Номер: US0009382911B2
Автор: Lin Sun, Salvador Quitaleg, Joost Brasz, SUN LIN, QUITALEG SALVADOR, BRASZ JOOST
Принадлежит: DANFOSS A/S, DANFOSS TURBOCOR COMPRESSORS B V, DANFOSS AS, DANFOSS TURBOCOR COMPRESSORS B.V.

One exemplary embodiment of this disclosure relates to a centrifugal refrigerant compressor system. The system includes a condenser, an evaporator, and an economizer between the condenser and the evaporator. The system further includes a centrifugal compressor having a first impeller and a second impeller downstream of the first impeller. The compressor includes at least one port. Fluid from a recirculation flow path and an economizer flow path is introduced into a main flow path of the compressor by way of the at least one port.

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Номер записи: 4
14-02-2013 дата публикации

CENTRIFUGAL COMPRESSOR WITH FLUID INJECTOR DIFFUSER

Номер: US20130036760A1
Автор: Lin Sun, Joost Brasz, SUN LIN, BRASZ JOOST
Принадлежит: DANFOSS TURBOCOR COMPRESSORS B.V.

A centrifugal compressor includes a housing providing in inlet, an impeller, a diffuser and a volute or collector. An electric motor is provided in the housing and is configured to drive at least one impeller via a shaft about an axis. The impeller includes an outlet end aligned with a diffuser and arranged at the throat. A variable fluid injector device is arranged downstream from the outlet end of the impeller in one example. The variable fluid injector device is configured to introduce high pressure fluid downstream from the impeller in response to a compressor regulation command. The injected fluid energizes the low momentum boundary layer, which provides compressor stability. A compressor controller is in communication with the variable fluid injection device to obtain a desired compressor operating condition.

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Номер записи: 5
14-02-2013 дата публикации

REFRIGERANT COMPRESSOR MAGNETIC BEARING

Номер: US20130039786A1
Автор: Lin Sun, Alain Pepin, SUN LIN, PEPIN ALAIN
Принадлежит: DANFOSS TURBOCOR COMPRESSORS B.V.

A magnetic bearing assembly includes a lamination stack with coil apertures extending between opposing sides. A continuous unitary insulation layer is overmoulded onto the opposing sides and within the coil apertures providing a coil aperture lining. The insulation layer includes a wall within the coil aperture adjoining coil aperture lining and bisecting the coil aperture into first and second openings. A coil portion is disposed in each of the first and second openings and electrically isolated from one another by the wall. The magnetic bearing assembly is arranged in a refrigerant compressor that includes an electric motor rotationally configured to rotationally drive an impeller via a shaft. A controller is in communication with the magnetic bearing and configured to energize the coils and provide a magnetic field rotationally supporting the shaft. 1. A refrigerant compressor comprising:an electric motor configured to rotationally drive an impeller via a shaft;a magnetic bearing assembly including an inner diameter within which the shaft is disposed, the magnetic bearing assembly having a lamination stack with coil apertures extending between opposing sides, a continuous unitary insulation layer provided within the coil apertures and the opposing sides, and coils disposed within and extending between the coil apertures; anda controller in communication with the magnetic bearing and configured to energize the coils and provide a magnetic field rotationally supporting the shaft.2. The refrigerant compressor according to claim 1 , comprising a housing within which the electric motor and impeller are arranged claim 1 , and a ring supporting the magnetic bearing assembly in the housing.3. The refrigerant compressor according to claim 2 , wherein the lamination stack includes an outer diameter engaging the ring claim 2 , and the insulation layer includes an outer periphery arranged radially inward of the outer diameter and beneath the coils.4. The refrigerant ...

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Номер записи: 6
13-10-2015 дата публикации

Centrifugal compressor with extended operating range

Номер: US0009157446B2
Автор: Joost Brasz, Mogens Rasmussen, BRASZ JOOST, RASMUSSEN MOGENS
Принадлежит: DANFOSS A/S, DANFOSS TURBOCOR COMPRESSORS B V, DANFOSS AS, DANFOSS TURBOCOR COMPRESSORS B.V.

This disclosure relates to a centrifugal compressor. In a first example, the compressor includes a first impeller provided in a main refrigerant flow path, a second impeller provided in the main refrigerant flow path downstream of the first impeller, and a recirculation flow path. In the first example, the recirculation flow path is provided between a first location and a second location along the main refrigerant flow path. The first location is downstream of the second location, and the second location is downstream of the first impeller. In a second example, the compressor includes an impeller provided in a main refrigerant flow path, and a recirculation flow path provided between a first location and a second location along the main refrigerant flow path. In the second example, the recirculation flow path includes a recirculation volute. Further disclosed is a method for operating a centrifugal compressor.

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Номер записи: 7
23-04-2015 дата публикации

HIGH PRESSURE RATIO MULTI-STAGE CENTRIFUGAL COMPRESSOR

Номер: US20150107289A1
Автор: Brasz Joost, SUN Lin
Принадлежит: DANFOSS TURBOCOR COMPRESSORS B.V.

A heat pump system includes a refrigerant circuit. First and second heat exchangers are arranged in the refrigerant circuit. A flow reversing device selectively changes a direction of flow in the refrigerant circuit between the first and second heat exchangers. A centrifugal compressor is arranged in the fluid circuit and has first and second impellers arranged in series relative to one another to provide a desired compressor pressure ratio. In one example, the centrifugal compressor mounts the first and second impellers on opposing ends of a shaft. The first and second impellers respectively include first and second stage inlets and outlets. One example desired compressor pressure ratio of at least 10:1 corresponds to a second stage outlet pressure to a first stage inlet pressure. A first diffuser is arranged at the first stage outlet, and the first diffuser is a variable geometry diffuser. 1. A heat pump system comprising:a refrigerant circuit;first and second heat exchangers arranged in the refrigerant circuit;a flow reversing device selectively changing a direction of flow in the refrigerant circuit between the first and second heat exchangers; anda centrifugal compressor arranged in the fluid circuit and having first and second impellers arranged in series relative to one another and providing a desired compressor pressure ratio.2. The heat pump system according to claim 1 , wherein the first and second impellers respectively include first and second stage inlets and outlets claim 1 , and the desired compressor pressure ratio corresponds to a second stage outlet pressure to a first stage inlet pressure.3. The heat pump system according to claim 2 , wherein the desired compressor pressure ratio is about 10:1.4. The heat pump system according to claim 2 , wherein the compressor includes first and second diffusers respectively arranged at the first and second stage outlets.5. The heat pump system according to claim 4 , wherein the first and second diffusers are ...

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Номер записи: 8
10-05-2012 дата публикации

Centrifugal compressor with fluid injector diffuser

Номер: WO2012060825A1
Автор: Joost Brasz, Lin Sun
Принадлежит: DANFOSS TURBOCOR COMPRESSORS B.V.

A centrifugal compressor includes a housing providing in inlet, an impeller, a diffuser and a volute or collector. An electric motor is provided in the housing and is configured to drive at least one impeller via a shaft about an axis. The impeller includes an outlet end aligned with a diffuser and arranged at the throat. A variable fluid injector device is arranged downstream from the outlet end of the impeller in one example. The variable fluid injector device is configured to introduce high pressure fluid downstream from the impeller in response to a compressor regulation command. The injected fluid energizes the low momentum boundary layer, which provides compressor stability. A compressor controller is in communication with the variable fluid injection device to obtain a desired compressor operating condition.

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Номер записи: 9
04-09-2003 дата публикации

A centrifugal compressor

Номер: CA2477382A1
Автор: Ronald David Conry
Принадлежит: DANFOSS TURBOCOR COMPRESSORS B.V., Ronald David Conry, Turbocor Inc.

A compact and efficient compressor is provided, based on using magnetic bearing technology, which can operate at high speed and comprises a reliable control system. The compressor of the present invention makes use of two separate compressors mounted on a single common motor, thus sharing a single drive. The balancing of the thrust at high RPM is improved by using a pair of electromagnetic bearings.

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Номер записи: 10
07-08-2014 дата публикации

Centrifugal compressor with extended operating range

Номер: WO2014120335A1
Автор: Joost Brasz, Mogens Rasmussen
Принадлежит: DANFOSS TURBOCOR COMPRESSORS B.V.

This disclosure relates to a centrifugal compressor. In a first example, the compressor includes a first impeller provided in a main refrigerant flow path, a second impeller provided in the main refrigerant flow path downstream of the first impeller, and a recirculation flow path. In the first example, the recirculation flow path is provided between a first location and a second location along the main refrigerant flow path. The first location is downstream of the second location, and the second location is downstream of the first impeller. In a second example, the compressor includes an impeller provided in a main refrigerant flow path, and a recirculation flow path provided between a first location and a second location along the main refrigerant flow path. In the second example, the recirculation flow path includes a recirculation volute. Further disclosed is a method for operating a centrifugal compressor.

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Номер записи: 11
19-06-2014 дата публикации

Variable-speed multi-stage refrigerant centrifugal compressor with diffusers

Номер: WO2013112122A3
Автор: Joost Brasz, Lin Sun, Mogens Rasmussen
Принадлежит: DANFOSS TURBOCOR COMPRESSORS B.V.

A refrigeration system includes a chiller having a refrigerant loop. A compressor is part of and in fluid communication with the refrigerant loop. The compressor has two stages, one with a variable geometry diffuser and one with a fixed geometry diffuser.

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Номер записи: 12