WO2020134517A1 - Compresseur - Google Patents

Compresseur Download PDF

Info

Publication number
WO2020134517A1
WO2020134517A1 PCT/CN2019/113991 CN2019113991W WO2020134517A1 WO 2020134517 A1 WO2020134517 A1 WO 2020134517A1 CN 2019113991 W CN2019113991 W CN 2019113991W WO 2020134517 A1 WO2020134517 A1 WO 2020134517A1
Authority
WO
WIPO (PCT)
Prior art keywords
gas
bearing
housing
gas bearing
motor
Prior art date
Application number
PCT/CN2019/113991
Other languages
English (en)
Chinese (zh)
Inventor
刘华
张治平
李宏波
钟瑞兴
陈玉辉
刘胜
亓静利
叶文腾
Original Assignee
珠海格力电器股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 珠海格力电器股份有限公司 filed Critical 珠海格力电器股份有限公司
Publication of WO2020134517A1 publication Critical patent/WO2020134517A1/fr

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F04D17/10—Centrifugal pumps for compressing or evacuating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
    • F04D29/056—Bearings
    • F04D29/057—Bearings hydrostatic; hydrodynamic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/06—Lubrication
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
    • F04D29/5846—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps cooling by injection

Definitions

  • the present disclosure relates to a compressor.
  • centrifugal compressor is a compressor that uses high-speed impeller rotation to generate centrifugal force to compress gas.
  • centrifugal compressors mainly use two types of bearings, oil-lubricated bearings and electromagnetic bearings, to support the rotor.
  • oil-lubricated bearings need to be equipped with an additional oil supply system, resulting in a complicated structure of the centrifugal compressor. And friction between the oil and the rotor will cause energy loss.
  • lubricating oil may leak into the refrigerant, causing refrigerant pollution.
  • Electromagnetic bearings have higher control requirements and poor resistance to system impact. In addition, additional power-off protection systems are required.
  • Hydrostatic gas bearings are bearings that use gas pressure to support the rotor and are oil-free bearings.
  • the structure of this bearing is simple, the friction between the gas and the rotor is small, and no complicated control system is needed.
  • the static pressure gas bearing adopts external gas supply, and its gas pressure is easy to adjust, and it can continue to supply gas during the start-stop phase of the compressor, avoiding the contact friction between the rotor and the bearing due to insufficient air supply during the start-stop phase To improve system stability.
  • the embodiments of the present disclosure provide a compressor capable of optimizing the internal space of the compressor.
  • a compressor including: a housing; a motor stator, provided in the housing; a motor rotor, provided in the housing; a first gas bearing, provided in the housing, And support the rotor of the motor; and a gas supply channel provided in the housing for connecting an external gas source and supplying working gas provided by the external gas source to the first gas bearing; wherein, the The compressor is configured to allow the working gas to flow out from the gap between the first gas bearing and the motor rotor and flow to the first side of the motor stator via the gap between the motor stator and the motor rotor.
  • the first side of the motor stator is the side away from the first gas bearing in the axial direction.
  • a cooling gas flow path is provided between the housing and the motor stator, and the outlet of the cooling gas flow path is located on the second side of the motor stator to flow from the cooling gas
  • the cooling gas flowing out of the outlet of the channel can be mixed with the working gas flowing out from the gap between the first gas bearing and the motor rotor on the second side of the motor stator, and then pass through the motor stator and the rotor of the motor.
  • the gap flows to the first side of the motor stator;
  • the second side of the motor stator is the side of the motor stator which is close to the first gas bearing in the axial direction.
  • the first gas bearing includes: a first thrust gas bearing supporting the motor rotor in the axial direction and a first radial gas bearing supporting the motor rotor in the radial direction;
  • the air supply channel includes:
  • a first air supply channel is provided in the housing for connecting an external air source, and supplies working gas provided by the external air source to the first radial gas bearing;
  • a second air supply channel is provided in the housing for connecting an external air source, and supplies working gas provided by the external air source to the first thrust gas bearing.
  • the first air supply channel and the second air supply channel are spaced apart from each other in the housing.
  • the air inlet of the first air supply channel on the housing and the air inlet of the second air supply channel on the housing are located in opposite directions of the housing.
  • the compressor further includes: a second gas bearing disposed in the housing and supporting the motor rotor;
  • the air supply channel further includes:
  • a third air supply channel is provided in the housing for connecting an external air source, and supplies working gas provided by the external air source to the second gas bearing.
  • the third air supply channel and the first air supply channel communicate with each other and share the same air inlet on the housing.
  • the compressor further includes:
  • the first-level impeller and the second-level impeller are fixedly connected to both ends of the motor rotor, respectively;
  • a second gas bearing which is disposed adjacent to the secondary impeller and supports the motor rotor in the radial direction;
  • a bearing seat is provided in the housing and supports the second gas bearing
  • the gas supply channel is also in communication with the second gas bearing for supplying the working gas provided by the external gas source to the second gas bearing
  • the bearing seat is provided with a support for supporting the first
  • a bearing mounting hole of a two-gas bearing, a vent hole group is provided between the bearing mounting hole and a surface of the bearing seat close to the stator side of the motor, for guiding from the second gas bearing and the motor The working gas flowing out of the gap of the rotor flows toward the bearing seat close to the stator of the motor.
  • the compressor further includes: an axial sealing mechanism, disposed between the motor rotor and the bearing housing, for forming a seal on one side of the second gas bearing in the axial direction effect.
  • the axial sealing mechanism includes: a comb-tooth seal, the comb-tooth seal is sleeved on the rotor of the motor, and is fixedly connected to the bearing seat, and the comb-tooth seal A flange near one side of the second gas bearing is provided with a group of ventilation slots, and the group of ventilation slots is at least partially in communication with the group of ventilation holes.
  • the vent hole group includes at least one vent hole distributed along the circumferential direction of the bearing housing, and the vent slot group includes at least one vent hole distributed along the circumferential direction of the comb-tooth seal,
  • the number of the vent holes is the same as the number of the vent grooves, and each vent groove is aligned with each vent hole.
  • the compressor is a centrifugal compressor.
  • the first gas bearing is a static pressure gas bearing.
  • the second gas bearing is a static pressure gas bearing.
  • the compressor further includes: an exhaust device, an intake port of which is located in the housing, for flowing out from the gap between the first gas bearing and the motor rotor, and passing the The working gas flowing from the gap between the motor stator and the motor rotor to the first side of the motor stator is discharged out of the housing.
  • a gas supply channel that supplies the working gas outside the casing to the first gas bearing inside the casing, and will flow out from the gap between the first gas bearing and the motor rotor, and pass through the motor stator and the motor rotor.
  • the working gas flowing to the other side of the stator of the motor is discharged to the outside of the housing, so that the external working gas can be accurately supplied to the first gas bearing and is absorbed by the exhaust device after the rotor gap of the motor is fixed, so that no additional Gas collection device, thereby optimizing the internal space of the compressor.
  • FIG. 1 is a schematic cross-sectional view of some embodiments of a compressor according to the present disclosure
  • FIG. 2 is a schematic structural view of a bearing housing in some embodiments of a compressor according to the present disclosure
  • FIG. 3 is a schematic diagram of the A-A section in FIG. 2;
  • FIG. 4 is a schematic structural view of a comb-tooth seal in some embodiments of a compressor according to the present disclosure
  • FIG. 5 is a schematic diagram of the B-B cross section in FIG. 4.
  • first”, “second” and similar words used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. Similar words such as “include” or “include” mean that the elements before the word cover the elements listed after the word, and do not exclude the possibility of covering other elements. “Up”, “down”, “left”, “right”, etc. are only used to indicate the relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.
  • a specific device when it is described that a specific device is located between the first device and the second device, there may or may not be an intervening device between the specific device and the first device or the second device.
  • the specific device When it is described that a specific device is connected to another device, the specific device may be directly connected to the other device without an intervening device, or may be directly connected to the other device without an intervening device.
  • the compressor includes: a housing 2, a motor stator 3, a motor rotor 8 and a first gas bearing.
  • the compressor is a centrifugal compressor.
  • the compressor is another type of compressor, such as a screw compressor or a vane compressor.
  • the motor stator 3 and the motor rotor 8 are both arranged in the housing 2.
  • a gap is formed between the motor stator 3 and the motor rotor 8.
  • at least one stage of impeller is included within the housing 2.
  • the at least one-stage impeller is fixedly connected to the motor rotor 8 and can rotate with the rotation of the motor rotor 8.
  • the first gas bearing is provided in the housing 2 and supports the motor rotor 8.
  • the first gas bearing is a static pressure gas bearing.
  • the compressor further includes a gas supply channel.
  • the air supply channel is provided in the housing 2 for connecting an external air source, and supplies working gas provided by the external air source to the first gas bearing.
  • the external air source can enter the first gas bearing accurately and with less loss through the air supply channel.
  • the first gas bearing includes: first thrust gas bearings 12, 14 and first radial gas bearing 11.
  • the first thrust gas bearings 12 and 14 are respectively located on the right side and the left side of the thrust disk 18 fixedly connected to the motor rotor, which can achieve the support effect of the motor rotor 8 in the axial direction.
  • the first radial gas bearing 11 is sleeved on the motor rotor 8 and supports the motor rotor 8 in the radial direction.
  • the air supply channel includes: a first air supply channel 10 and a second air supply channel 16.
  • the first air supply channel 10 is provided in the housing 2 for connecting an external air source, and supplies working gas provided by the external air source to the first radial gas bearing 11.
  • the first air supply channel 10 is opened inside the shell wall of the housing 2 and includes a plurality of sub-channels along the horizontal and vertical directions. These linear sub-channels can further reduce the pressure loss of the gas along the way.
  • the end of the first air supply channel 10 is directly aligned with the outer ring of the first radial gas bearing 11, so that the working gas of the external gas source can be passed into the first radial gas bearing 11 accurately and with less loss.
  • the working gas passed into the first radial gas bearing 11 can penetrate into the gap between the first radial gas bearing 11 and the motor rotor 8 through the porous material of the bearing to form a static pressure gas supporting effect.
  • the second air supply channel 16 is provided in the housing 2 for connecting an external air source, and supplies working gas provided by the external air source to the first thrust gas bearings 12 and 14.
  • a part of the second air supply channel 16 is opened inside the wall of the housing 2 and its end is aligned with the right end surface of the first thrust gas bearing 12, while the other part is opened between the first thrust
  • the gas bearing 14 is closely attached to the inside of the diffuser 13, and its end is aligned with the left end surface of the first thrust gas bearing 14, so that the working gas of the external air source can be accurately and less lost into the first thrust gas Bearings 12, 14.
  • the second gas supply channel 16 includes a plurality of sub-channels in the horizontal and vertical directions. These linear sub-channels can further reduce the pressure loss of the gas along the way.
  • the working gas passed into the first thrust gas bearings 12 and 14 can penetrate into the gap between the first thrust gas bearings 12 and 14 and the thrust disc 18 through the porous material of the bearing, respectively, to form a static pressure gas support effect.
  • the gas pressure required for the thrust gas bearing and the radial gas bearing is different, so in some embodiments, the first gas supply channel 10 and the second gas supply channel 16 are located in the The housing 2 is spaced apart from each other.
  • the first air supply channel 10 and the second air supply channel 16 are independent of each other, and do not directly communicate in the internal channel of the housing.
  • the air inlet 9 of the first air supply channel 10 on the outside of the casing and the air inlet 1 of the second air supply channel 16 on the outside of the housing are respectively provided in different parts of the housing 2, and the first air supply channel 10 does not directly communicate with the second air supply channel 16.
  • the air inlet 9 and the air inlet 1 are connected to external air sources of different pressures, so as to meet the working gas supply of the gas bearing that is more in line with the working conditions, and make the structure of the air supply channel simpler.
  • the first air supply channel 10 on the housing 2 is connected to the air inlet 9
  • the air inlet 1 of the second air supply channel 16 on the housing 2 is disposed in the opposite direction of the housing 2, for example, below and above the housing 2.
  • the compressor is configured to allow outflow from the gap between the first gas bearing and the motor rotor 8 and flow to the via the gap between the motor stator 3 and the motor rotor 8
  • the working gas on the first side of the motor stator 3 is discharged to the outside of the housing 2.
  • the first side of the motor stator 3 is the side of the motor stator 3 that is away from the first gas bearing in the axial direction.
  • the working gas input from the outside of the compressor can be more easily discharged from the inside of the compressor to ensure the stability of the gas supply, without the need to provide a special device for collecting working gas, thereby optimizing the internal space of the compressor.
  • the cooling effect of the motor stator and the motor rotor can also be achieved by the flow of working gas in the fixed rotor gap.
  • the compressor further includes an exhaust device 21 (indicated by arrows).
  • the suction port of the exhaust device 21 is located in the housing 2, which can flow out from the gap between the first gas bearing and the motor rotor 8 and pass through The gap between the motor stator 3 and the motor rotor 8 flows to the first side of the motor stator 3 (that is, the side of the motor stator 3 that is away from the first gas bearing in the axial direction, corresponding to FIG. 1
  • the working gas in the area B) is discharged outside the housing 2.
  • a cooling gas flow channel 15 is provided between the housing 2 and the motor stator 3.
  • the outlet of the cooling gas flow channel 15 is located on the second side of the motor stator 3 (i.e., the side of the motor stator 3 near the first gas bearing in the axial direction).
  • the cooling gas that enters the cooling gas flow channel 15 can flow out from the outlet of the cooling gas flow channel 15, and the working gas that flows out from the gap between the first gas bearing and the motor rotor 8 can
  • the two sides (corresponding to area A in FIG. 1) are mixed, and the mixed gas medium flows to the first side of the motor stator 3 through the gap between the motor stator 3 and the motor rotor 8 (corresponding to FIG. 1) Area B).
  • the cooling effect of the motor stator 3 and the motor rotor 8 can be achieved when passing between the motor stator 3 and the motor rotor 8, and can also be absorbed by the exhaust device 21 and discharged to the outside of the housing, so that The gas circulation inside and outside the compressor is smoother, ensuring the stability of the internal working of the compressor.
  • the cooling gas and the working gas are the same medium, and in other embodiments, the cooling gas and the working gas are different media.
  • both the cooling gas and the working gas are refrigerant compressed by the compressor.
  • the compressor includes a two-stage impeller.
  • the two-stage impeller is fixedly connected to both ends of the rotor 8 of the motor.
  • the gas bearings 11 are arranged on the side of the motor rotor 8 close to the second-stage impeller 20 relative to the first-stage impeller 19.
  • the compressor further includes a second gas bearing 6, which supports the motor rotor 8 at a position of the two-stage impeller 20 close to the first impeller 19 side.
  • the second gas bearing is a static pressure gas bearing.
  • the second gas bearing 6 is supported by the bearing seat 5 provided in the housing 2.
  • the air supply channel further includes: a third air supply channel 17 disposed in the housing 2.
  • the third air supply channel 17 is used to connect an external air source and supply working gas provided by the external air source to the second gas bearing 6.
  • the third gas supply channel 17 and the second gas supply channel 16 are mutually connected They are connected and share the same air inlet on the housing 2 to simplify the air supply channel.
  • the gas supply passage 10 communicates with the second gas bearing 6 (directly communicated, or communicated via a flow passage 53 opened on the bearing seat 5), which is used to connect the external
  • the working gas provided by the gas source is supplied to the second gas bearing 6.
  • the bearing housing 5 has a bearing mounting hole 52 provided for supporting the second gas bearing 6, and a vent hole is provided between the bearing mounting hole 52 and a surface of the bearing housing 5 close to the motor stator 3 side group.
  • the vent hole group includes at least one vent hole 51 distributed along the circumferential direction of the bearing seat 5.
  • the vent hole group can guide the working gas flowing out from the gap between the second gas bearing 6 and the motor rotor 8 to flow to the area B of the bearing housing 5 close to the motor stator 3 side.
  • the working gas entering the area B can be absorbed by the exhaust device 21 and discharged out of the casing.
  • the compressor further includes: an axial sealing mechanism, which is disposed between the motor rotor 8 and the bearing seat 5, and is used for the second gas bearing 6 in the axial direction
  • the side of the seal is formed.
  • the axial sealing mechanism includes: a comb-tooth seal 7.
  • the comb-tooth seal 7 is sleeved on the motor rotor 8 and fixedly connected to the bearing housing 5.
  • a flange 74 on the side of the comb-tooth seal 7 near the second gas bearing 6 is provided
  • a vent slot group, the vent slot group is at least partially in communication with the vent hole group.
  • the comb seal 7 is also provided with comb teeth 71 arranged in the axial direction and an assembly hole 72 for assembling with the bearing housing 5.
  • the vent groove group includes at least one vent groove group distributed along the circumferential direction of the comb-tooth seal 7, in order to smoothly discharge the working gas flowing out from the gap between the second gas bearing 6 and the motor rotor 8,
  • the number of vent holes 51 is the same as the number of vent grooves 71, for example, 5 (or 3 or 7 all), and each vent groove 71 is aligned with each vent hole 51, respectively.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Thermal Sciences (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

Compresseur comprenant : un carter (2) ; un stator de moteur (3) disposé dans le carter (2) ; un rotor de moteur (8) disposé dans le carter (2) ; un premier palier à gaz disposé dans le carter (2) et supportant le rotor de moteur (8) ; et un canal d'écoulement d'alimentation en air disposé dans le carter (2) et utilisé pour être connecté à une source d'air externe et fournir de l'air opérationnel cédé par la source d'air externe au premier palier à air ; le compresseur étant configuré pour permettre au gaz opérationnel qui s'écoule hors d'un espace, situé entre le premier palier à gaz et le rotor de moteur (8), jusqu'à un premier côté du stator de moteur (3) au moyen d'un espace situé entre le stator de moteur (3) et le rotor de moteur (8) pour être évacué du carter (2 ) ; et le premier côté du stator de moteur (3) est un côté, à l'opposé du premier palier à gaz, du stator de moteur (3) dans une direction axiale. Le compresseur peut optimiser un espace intérieur du compresseur.
PCT/CN2019/113991 2018-12-25 2019-10-29 Compresseur WO2020134517A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201811593234.6A CN111365254A (zh) 2018-12-25 2018-12-25 用于优化内部空间的压缩机
CN201811593234.6 2018-12-25

Publications (1)

Publication Number Publication Date
WO2020134517A1 true WO2020134517A1 (fr) 2020-07-02

Family

ID=71127445

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/113991 WO2020134517A1 (fr) 2018-12-25 2019-10-29 Compresseur

Country Status (2)

Country Link
CN (1) CN111365254A (fr)
WO (1) WO2020134517A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113123983A (zh) * 2021-04-07 2021-07-16 西安交通大学 一种具有双冷却系统的燃料电池用两级高速离心空压机
CN114483611B (zh) * 2022-01-21 2024-02-13 扬州大学 一种动压浮环和磁轴承支承燃料电池空压机主轴结构

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103326512A (zh) * 2013-05-16 2013-09-25 西安交通大学 一种超高速永磁电机驱动的离心式空气压缩机冷却结构
US20140286599A1 (en) * 2012-01-03 2014-09-25 New Way Machine Components, Inc. Air bearing for use as seal
CN104948478A (zh) * 2014-03-26 2015-09-30 霍尼韦尔国际公司 具有形成扩散器的壁的热屏蔽的电动机驱动的压缩机
CN106015032A (zh) * 2016-06-28 2016-10-12 杭州万辰机电科技有限公司 离心压缩机
CN107634611A (zh) * 2017-10-18 2018-01-26 李记东 具有新型冷却结构的电机及包含其的流体机械
CN108425862A (zh) * 2017-02-14 2018-08-21 丹佛斯公司 用于在低容量应用中使用的无油离心式压缩机
CN209340163U (zh) * 2018-12-25 2019-09-03 珠海格力电器股份有限公司 用于优化内部空间的压缩机

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140286599A1 (en) * 2012-01-03 2014-09-25 New Way Machine Components, Inc. Air bearing for use as seal
CN103326512A (zh) * 2013-05-16 2013-09-25 西安交通大学 一种超高速永磁电机驱动的离心式空气压缩机冷却结构
CN104948478A (zh) * 2014-03-26 2015-09-30 霍尼韦尔国际公司 具有形成扩散器的壁的热屏蔽的电动机驱动的压缩机
CN106015032A (zh) * 2016-06-28 2016-10-12 杭州万辰机电科技有限公司 离心压缩机
CN108425862A (zh) * 2017-02-14 2018-08-21 丹佛斯公司 用于在低容量应用中使用的无油离心式压缩机
CN107634611A (zh) * 2017-10-18 2018-01-26 李记东 具有新型冷却结构的电机及包含其的流体机械
CN209340163U (zh) * 2018-12-25 2019-09-03 珠海格力电器股份有限公司 用于优化内部空间的压缩机

Also Published As

Publication number Publication date
CN111365254A (zh) 2020-07-03

Similar Documents

Publication Publication Date Title
JP4461180B2 (ja) モーター冷却経路およびスラストベアリング負荷設計
TW517138B (en) Centrifugal compressor and method of operating the centrifugal compressor
CN209340163U (zh) 用于优化内部空间的压缩机
CN107664143B (zh) 压缩机及具有其的空调器
CN108138844B (zh) 轴承构造以及增压器
WO2021170088A1 (fr) Compresseur d'air et véhicule
CN108999793A (zh) 一种离心式压缩机
CN108350932B (zh) 轴承构造以及增压器
WO2020134517A1 (fr) Compresseur
JP2017525890A (ja) 一体型中間冷却を有する遠心圧縮機
JP2000054997A (ja) 遠心圧縮機
CN102562676B (zh) 空气循环机轴承冷却入口板
CN113809885A (zh) 一种压缩机及具有该压缩机的空调和汽车
KR20150081342A (ko) 원심압축기 및 이를 구비한 과급기 및 원심압축기의 운전방법
CN111486110A (zh) 离心压缩机、热泵系统
CN114165464A (zh) 一种空压机和燃料电池系统
CN114165462B (zh) 一种离心式空压机和燃料电池系统
CN116538110B (zh) 一种磁悬浮空气压缩机
CN211370773U (zh) 气悬浮压缩机
CN111486108A (zh) 离心压缩机、热泵系统
CN209340202U (zh) 轴封部件、压缩机和冷媒循环系统
CN209523914U (zh) 轴承承载部件、压缩机和冷媒循环系统
WO2020134518A1 (fr) Composant de support de palier, compresseur et système de circulation de fluide frigorigène
CN209838754U (zh) 一种具有气体轴承的压缩机
WO2013031343A1 (fr) Turbomachine centrifuge à plusieurs niveaux de pression

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19906385

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19906385

Country of ref document: EP

Kind code of ref document: A1