WO2020088293A1 - 电机冷却组件及电机及压缩机 - Google Patents

电机冷却组件及电机及压缩机 Download PDF

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Publication number
WO2020088293A1
WO2020088293A1 PCT/CN2019/112398 CN2019112398W WO2020088293A1 WO 2020088293 A1 WO2020088293 A1 WO 2020088293A1 CN 2019112398 W CN2019112398 W CN 2019112398W WO 2020088293 A1 WO2020088293 A1 WO 2020088293A1
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Prior art keywords
motor
cooling
assembly according
cooling assembly
cooling medium
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PCT/CN2019/112398
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English (en)
French (fr)
Inventor
刘华
龙忠铿
李日华
毕雨时
曹聪
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珠海格力电器股份有限公司
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Publication of WO2020088293A1 publication Critical patent/WO2020088293A1/zh

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating

Definitions

  • the present disclosure relates to the technical field of refrigeration equipment, and in particular, to a motor cooling assembly, a motor and a compressor.
  • Compressors in the related art mostly use suction cooling or liquid injection cooling during cooling.
  • Figure 1 is a schematic diagram of the structure of the compressor using suction cooling motor.
  • the motor 2 is in the machine body 1, and the refrigerant enters the motor cavity through the intake filter 4 to cool the stator and the rotor 3, and enters the rotor cavity for compression after cooling.
  • the suction cooling directly cools the motor through the refrigerant entering the compressor and then compresses, which will cause the suction superheat to be too high and reduce the compressor energy efficiency.
  • Fig. 2 is a schematic diagram of the structure of a motor in which the compressor uses liquid cooling.
  • the motor 6 is arranged inside the body 5, and the body 5 is provided with a liquid injection valve 8.
  • the spray liquid cooling is generally provided with one or more liquid spray ports on the motor housing. The spray liquid enters the cavity and takes away the heat of the motor winding through the flow.
  • the dwell time is short when passing through the flow channel, and the cooling effect cannot be guaranteed, which may easily cause uneven cooling of the motor and reduce the efficiency of the motor.
  • the motor of the compressor in the related art can exert a certain cooling effect by suction cooling or liquid injection cooling, it still has a problem of poor cooling effect or affecting the operation of the compressor.
  • Embodiments of the present disclosure provide a motor cooling assembly, a motor, and a compressor, to solve the technical problem of poor compressor performance caused by the compressor's motor cooling mode.
  • An embodiment of the present disclosure provides a motor cooling assembly, including: an inner shell, an installation space formed in the inner shell to match the main body of the motor is formed; an outer shell, sleeved outside the inner shell, and cooling is formed between the outer shell and the inner shell
  • the cavity is provided with a cooling medium inlet and a cooling medium outlet on the casing.
  • the cooling cavity circulates the cooling medium through the cooling medium inlet and the cooling medium outlet.
  • the outer shell and the inner shell are spaced apart, and the outer shell and the inner shell are connected by a sealing plate.
  • the sealing plate includes a fixed sealing plate and a detachable sealing plate, and the fixed sealing plate and the detachable sealing plate are respectively connected to both ends of the outer shell and the inner shell.
  • the inner shell is provided with a mounting port, the mounting port is used to install the motor body, and the detachable sealing plate is sealed on the mounting port.
  • a through hole is formed in the fixed sealing plate, and the through hole is used to pass through the rotating shaft of the motor body.
  • a bearing is provided on the through hole.
  • the cooling medium inlet and the cooling medium outlet are respectively located at the left and right ends of the housing along the length of the housing.
  • the cooling medium inlet and the cooling medium outlet are respectively located at the upper end and the lower end of the housing in the height direction of the housing.
  • the cooling cavity is provided with a turbulence structure, and the turbulence structure is used to allow the cooling medium to flow sufficiently in the cooling cavity.
  • the spoiler structure includes a plurality of first spoiler ribs disposed on the inner wall of the housing, and the plurality of first spoiler ribs are distributed along the length of the housing.
  • the spoiler structure further includes a plurality of second spoiler ribs disposed on the outer wall of the inner shell, and the second spoiler ribs are distributed along the length of the inner shell.
  • the plurality of first spoiler ribs and the plurality of second spoiler ribs are arranged in a staggered manner in the cooling cavity.
  • a fixing rib is provided in the installation space.
  • the detachable sealing plate is formed with a protrusion inserted between the inner shell and the outer shell.
  • a first sealing body is provided between the inner shell and the protrusion.
  • a first sealing groove for mounting a first sealing body is opened on the outer wall of the inner shell.
  • a second sealing body is provided between the housing and the protrusion.
  • a second sealing groove for installing a second sealing body is opened on the inner wall of the housing.
  • the present disclosure also provides a motor including the above-mentioned motor cooling assembly and a motor main body, the motor main body is installed in the motor cooling assembly.
  • the present disclosure also provides a compressor, including a motor, and the motor is the motor of the claims.
  • the cooling medium inlet is close to the suction side of the compressor on the housing, and the cooling medium outlet is close to the winding lead-out side of the motor on the housing.
  • the compressor is a single-stage compressor or a two-stage compressor or an air-cooled compressor.
  • the cooling medium inlet and the cooling medium outlet circulate the cooling medium in the cooling cavity
  • the motor body can be sufficiently cooled
  • the temperature of the motor body is uniform, which is beneficial to improve the efficiency of the motor and the energy efficiency of the compressor.
  • FIG. 1 is a schematic diagram of a suction-cooled motor of a compressor in the related art
  • FIG. 2 is a schematic diagram of a liquid-cooled motor of a compressor in the related art
  • FIG. 3 is a schematic cross-sectional structure diagram of an embodiment of a motor cooling assembly according to the present disclosure
  • FIG. 4 is a schematic view of the right side of the motor cooling assembly of FIG. 3;
  • FIG. 5 is a schematic sectional view of a two-stage compressor to which the motor cooling assembly of the present disclosure is applied;
  • FIG. 6 is a schematic cross-sectional structural view of an air-cooled compressor to which the motor cooling assembly of the present disclosure is applied.
  • FIG. 3 shows an embodiment of the motor cooling assembly of the present disclosure.
  • the motor cooling assembly includes an inner shell 10 and an outer shell 20.
  • An installation space 11 adapted to the motor body 60 is formed in the inner shell 10, the outer shell 20 is sleeved outside the inner shell 10, and a cooling cavity is formed between the outer shell 20 and the inner shell 10.
  • the housing 20 is provided with a cooling medium inlet 21 and a cooling medium outlet 22, and the cooling cavity circulates the cooling medium through the cooling medium inlet 21 and the cooling medium outlet 22.
  • the motor body 60 can be sufficiently cooled, the temperature of the motor body 60 is uniform, which is beneficial to improve the efficiency of the motor and improve Compressor energy efficiency.
  • cooling cavity can be compatible with a variety of cooling media, avoid corrosion of the motor, can adapt to different compressor operating conditions, and has a wide range of application and high popularity.
  • the outer shell 20 and the inner shell 10 are spaced apart, and the outer shell 20 and the inner shell 10 are connected by a sealing plate.
  • An annular cooling cavity is formed between the outer shell 20 and the inner shell 10 to surround the motor main body 60 so that the motor main body 60 is sufficiently cooled.
  • the sealing plate includes a fixed sealing plate 31 and a detachable sealing plate 32, and the fixed sealing plate 31 and the detachable sealing plate 32 are respectively connected to the outer shell 20 and the inner shell Both ends of 10.
  • the fixed sealing plate 31 serves as a bottom case
  • the detachable sealing plate 32 serves as a cover plate.
  • the inner shell 10 is provided with a mounting port 12, the mounting port 12 is used to install the motor body 60, and the detachable sealing plate 32 is sealed on the mounting port 12.
  • the motor body 60 is installed into the installation space 11 through the installation opening 12, and then the installation opening 12 is covered with a removable sealing plate 32.
  • a through hole 311 is formed in the fixed sealing plate 31, and the through hole 311 is used to pass through the rotating shaft of the motor body 60. More preferably, as shown in FIGS. 5 and 6, a bearing 312 is provided on the through hole 311 to support the rotating shaft of the motor body 60.
  • the cooling medium inlet 21 and the cooling medium outlet 22 are respectively located at the left and right ends of the housing 20 in the length direction of the housing 20. In this way, the cooling medium can flow through the entire cooling cavity more fully in the length direction of the cooling cavity, and the motor body 60 can be cooled more fully. More preferably, the cooling medium inlet 21 and the cooling medium outlet 22 are respectively located at the upper end and the lower end of the housing 20 in the height direction of the housing 20. In this way, the cooling medium can flow through the entire cooling cavity more fully in the height direction of the cooling cavity, and the motor body 60 can be cooled more fully.
  • the cooling cavity is provided with a spoiler structure 40.
  • the spoiler structure 40 is used to allow the cooling medium to flow sufficiently in the cooling cavity to match the cooling medium and structure according to different usage environments to improve the cooling effect of the motor , Improve motor efficiency, improve compressor energy efficiency.
  • the spoiler structure 40 includes a plurality of first spoiler ribs disposed on the inner wall of the housing 20, and the plurality of first spoiler ribs are distributed along the length direction of the housing 20.
  • the first spoiler can disturb the cooling medium flowing through the inner wall of the housing 20 to make it uniform.
  • the spoiler structure 40 further includes a plurality of second spoiler ribs disposed on the outer wall of the inner shell 10, and the second spoiler ribs are distributed along the length of the inner shell 10.
  • the second spoiler can disturb the cooling medium flowing through the outer wall of the inner shell 10 to make it uniform.
  • the plurality of first spoiler ribs and the plurality of second spoiler ribs are staggered in the cooling cavity. In this way, the cooling medium can be more fully disturbed, so that the whole is evenly opened to cool the inner shell 10.
  • a fixing rib 111 is provided in the installation space 11.
  • the motor main body 60 can be fixed by the fixing rib 111 to ensure the stability of the motor main body 60. More preferably, there are multiple sets of fixing ribs 111, which are arranged on the installation space 11 at positions that are matched with the motor body 60 to enhance the fixing effect on the motor body 60.
  • the detachable sealing plate 32 is formed with a protrusion 321 inserted between the inner shell 10 and the outer shell 20.
  • the cooling cavity can be better sealed.
  • a first sealing body 51 is provided between the inner shell 10 and the protruding portion 321, and the first sealing body 51 seals the gap between the inner shell 10 and the protruding portion 321 to ensure that the inner shell 10 and the protruding portion 321 The tightness between.
  • a first sealing groove for installing the first sealing body 51 is opened on the outer wall of the inner shell 10, and the first sealing body 51 can be fixed through the first sealing groove.
  • a second sealing body 52 is provided between the housing 20 and the protruding portion 321. The second sealing body 52 seals the gap between the housing 20 and the protruding portion 321 to ensure that the gap between the housing 20 and the protruding portion 321 Tightness.
  • a second sealing groove for installing the second sealing body 52 is opened on the inner wall of the housing 20, and the second sealing body 52 can be fixed through the second sealing groove.
  • the present disclosure provides a motor including a motor cooling assembly and a motor main body 60, and the motor main body 60 is installed in the motor cooling assembly described above.
  • the motor body 60 can be sufficiently cooled, the temperature of the motor body 60 can be made uniform, and the motor efficiency can be improved.
  • the present disclosure also provides a compressor including the above-mentioned motor.
  • the application of the above-mentioned motor can make the cooling medium flow in the cooling cavity to fully exchange heat, and can match the cooling medium and structure according to different usage environments, improve the cooling effect of the motor, improve the efficiency of the motor, and increase the energy efficiency of the compressor.
  • the cooling medium inlet 21 is close to the suction side of the compressor on the housing 20, and the cooling medium outlet 22 is close to the winding lead-out side of the motor on the housing 20. In this way, part of the intake cooling capacity can be used, or it can be reversed.
  • the cooling medium When in use, the cooling medium enters the cooling cavity from the cooling medium inlet 21, flows toward the bottom under the guidance of the turbulence structure, and is finally discharged from the cooling medium outlet 22, and the cooling medium is circulated for use after external heat exchange.
  • the cooling medium inlet 21 is close to the suction side of the compressor, and the cooling medium outlet 22 is close to the drawing side of the motor winding.
  • Part of the intake cooling capacity can be used, or it can be arranged in the reverse direction.
  • the inner shell 10 is provided with a plurality of sets of fixing ribs 111, which can follow up and increase the number of needs, and is used to fix the motor.
  • the motor can be fixed by using conventional positioning keys or positioning pins, and adjusted according to actual needs.
  • the structure of the bearing 312 is the same as that of the conventional compressor, and the structure of the rotor chamber of the conventional compressor can be designed on the left side of the housing.
  • the right side of the housing is the sealing surface, which is connected to the detachable sealing plate 32 to seal through the flange structure.
  • the outer wall of the inner shell 10 and the inner wall of the outer shell 20 are respectively provided with sealing grooves for installing O-rings, so as to ensure that the cooling medium does not leak.
  • the compressor may be a two-stage compressor.
  • the detachable sealing plate 32 is provided with a through hole 323 for passing through the rotating shaft of the motor body.
  • a bearing 324 is also installed on the through hole 323 to support the rotating shaft of the motor body. Since the rotating shaft needs to be extended on the detachable sealing plate 32 to be connected to the second stage, the detachable sealing plate 32 is connected to the flange structure on the housing 20 by means of a lock nut.
  • the compressor is a single-stage compressor.
  • the detachable sealing plate 32 does not have a through hole passing through the rotating shaft, and the detachable sealing plate 32 directly covers the mounting opening 12.
  • the compressor is an air-cooled compressor.
  • an air inlet 322 is added to the detachable sealing plate 32 for arranging the air inlet filter.
  • the inner shell 10 and the outer shell 20 need to be lengthened to ensure the space of the intake filter, and can be adjusted according to actual needs. Since the motor is not independently cooled at this time, the speed of the ribs of the motor 30 of the housing 30 needs to be considered and adjusted according to actual needs.
  • the medium can be selected from other media such as water or refrigerant, which can be adjusted according to needs.
  • the size of the cooling cavity and the setting of the turbulence structure can also be adjusted according to the needs.
  • the spacing between the flow channels can be selected from 30mm to 50mm or adjusted according to the needs.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

本公开提供了一种电机冷却组件及电机及压缩机。该电机冷却组件包括内壳和外壳。内壳中形成有与电机主体相适配的安装空间，外壳套在内壳的外部，外壳与内壳之间形成有冷却空腔。外壳上设置有冷却介质进口以及冷却介质出口，冷却空腔通过冷却介质进口和冷却介质出口流通冷却介质。应用本公开的技术方案，通过冷却介质进口和冷却介质出口在冷却空腔中流通冷却介质，可以对电机主体进行充分地冷却，让电机主体温度均匀，有利于提高电机效率，提高压缩机能效。

Description

电机冷却组件及电机及压缩机
相关申请
本公开要求2018年10月31日申请的，申请号为201811289095.8，名称为“一种电机冷却组件及电机及压缩机”的中国专利申请的优先权，在此将其全文引入作为参考。
技术领域
本公开涉及制冷设备技术领域，具体而言，涉及一种电机冷却组件及电机及压缩机。
背景技术
相关技术中的压缩机在冷却时多采用吸气冷却或喷液冷却。
图1为压缩机采用吸气冷却的电机结构示意图。电机2在机体1内，冷媒通过进气滤清器4进入电机腔，对定子及转子3进行冷却，冷却后进入转子腔压缩。采用此种方式，吸气冷却通过进入压缩机的冷媒直接冷却电机后再进行压缩，会造成吸气过热度过高，降低压缩机能效。
图2为压缩机采用喷液冷却的电机结构示意图。电机6在机体5内部布置，机体5上设有喷液阀8，通过内部分流流道，冷媒在进入流道后向两侧流动，分别冷却定子及转子7，冷却后的冷媒回到转子腔。采用此种方式，能够避免吸气过热问题，但喷液冷却一般是在电机壳体上设置一个或多个喷液口，喷液进入腔体内通过流动带走电机绕组发热量，由于冷媒穿过流道时停留时间短，无法保证冷却效果，易导致电机冷却不均匀问题，降低电机效率。
因此，由上述内容可知，相关技术中的的压缩机的电机虽然通过吸气冷却或喷液冷却可以起到一定的冷却效果，但还是存在着冷却效果不佳或者影响压缩机工作的问题。
申请内容
本公开实施例提供了一种电机冷却组件及电机及压缩机，以解决压缩机的电机存在的冷却方式不佳导致压缩机性能下降的技术问题。
本公开实施方式提供了一种电机冷却组件，包括：内壳，内壳中形成有与电机主体相适配的安装空间；外壳，套在内壳的外部，外壳与内壳之间形成有冷却空腔，外壳上设置有冷却介质进口以及冷却介质出口，冷却空腔通过冷却介质进口和冷却介质出口流通冷却介质。
在一个实施方式中，外壳与内壳间隔设置，外壳与内壳之间通过封板连接。
在一个实施方式中，封板包括固定封板和可拆卸封板，固定封板和可拆卸封板分别连接在外壳和内壳的两端。
在一个实施方式中，内壳上开设有安装口，安装口用于安装电机主体，可拆卸封板封盖在安装口上。
在一个实施方式中，固定封板上开设有通孔，通孔用于通过电机主体的转轴。
在一个实施方式中，通孔上设置有轴承。
在一个实施方式中，冷却介质进口和冷却介质出口在外壳的长度方向上分别位于外壳的左端和右端。
在一个实施方式中，冷却介质进口和冷却介质出口在外壳的高度方向上分别位于外壳的上端和下端。
在一个实施方式中，冷却空腔上设置有扰流结构，扰流结构用于让冷却介质在冷却空腔内流动充分。
在一个实施方式中，扰流结构包括设置在外壳的内壁上的多条第一扰流筋，多条第一扰流筋沿外壳的长度方向分布。
在一个实施方式中，扰流结构还包括设置在内壳的外壁上的多条第二扰流筋，多条第二扰流筋沿内壳的长度方向分布。
在一个实施方式中，多条第一扰流筋和多条第二扰流筋在冷却空腔内错位设置。
在一个实施方式中，安装空间内设置有固定筋。
在一个实施方式中，固定筋为多组，设置在安装空间上与电机主体相适配地位置处。
在一个实施方式中，可拆卸封板上形成有插入到内壳和外壳之间的凸出部。
在一个实施方式中，内壳和凸出部之间设置有第一密封体。
在一个实施方式中，内壳的外壁上开设有安装第一密封体的第一密封槽。
在一个实施方式中，外壳和凸出部之间设置有第二密封体。
在一个实施方式中，外壳的内壁上开设有安装第二密封体的第二密封槽。
本公开还提供了一种电机，包括上述的电机冷却组件和电机主体，电机主体安装在电机冷却组件中。
本公开还提供了一种压缩机，包括电机，电机为权利要求的电机。
在一个实施方式中，冷却介质进口在外壳上与压缩机的吸气侧相靠近，冷却介质出口在外壳上与电机的绕组引出侧相靠近。
在一个实施方式中，压缩机为单级压缩机或双级压缩机或吸气冷却式压缩机。
在上述实施例中，通过冷却介质进口和冷却介质出口在冷却空腔中流通冷却介质，可以对电机主体进行充分地冷却，让电机主体温度均匀，有利于提高电机效率，提高压缩机能效。
附图说明
构成本公开的一部分的附图用来提供对本公开的进一步理解，本公开的示意性实施例及其说明用于解释本公开，并不构成对本公开的不当限定。在附图中：
图1为相关技术中的压缩机的吸气冷却式的电机结构示意图；
图2为相关技术中的压缩机的喷液冷却式的电机结构示意图；
图3是根据本公开的电机冷却组件的实施例的剖面结构示意图；
图4是图3的电机冷却组件的右视结构示意图；
图5是应用了本公开的电机冷却组件的双级压缩机的剖视结构示意图；
图6是应用了本公开的电机冷却组件的吸气冷却式的压缩机的剖视结构示意图。
具体实施方式
为使本公开的目的、技术方案和优点更加清楚明白，下面结合实施方式和附图，对本公开做进一步详细说明。在此，本公开的示意性实施方式及其说明用于解释本公开，但并不作为对本公开的限定。
图3示出了本公开的电机冷却组件的实施例，该电机冷却组件包括内壳10和外壳20。内壳10中形成有与电机主体60相适配的安装空间11，外壳20套在内壳10的外部，外壳20与内壳10之间形成有冷却空腔。外壳20上设置有冷却介质进口21以及冷却介质出口22，冷却空腔通过冷却介质进口21和冷却介质出口22流通冷却介质。
应用本公开的技术方案，通过冷却介质进口21和冷却介质出口22在冷却空腔中流通冷却介质，可以对电机主体60进行充分地冷却，让电机主体60温度均匀，有利于提高电机效率，提高压缩机能效。
还需要说明的是，上述的冷却空腔可以兼容多种冷却介质，避免腐蚀电机，可适应不同的压缩机工况，适用范围广，推广性高。
如图3所示，在本实施例的技术方案中，外壳20与内壳10间隔设置，外壳20与内壳10之间通过封板连接。外壳20与内壳10之间形成环状的冷却空腔，对电机主体60进行包围，使得电机主体60充分地冷却。
如图3和图5所示，在本实施例的技术方案中，封板包括固定封板31和可拆卸封板 32，固定封板31和可拆卸封板32分别连接在外壳20和内壳10的两端。固定封板31作为底壳，可拆卸封板32作为盖板，在使用时通过拆卸下可拆卸封板32，将电机主体60安装进安装空间11后，再安装可拆卸封板32。可选的，内壳10上开设有安装口12，安装口12用于安装电机主体60，可拆卸封板32封盖在安装口12上。电机主体60通过安装口12安装到安装空间11内，再通过可拆卸封板32封盖安装口12。
可选的，如图3所示，固定封板31上开设有通孔311，通孔311用于通过电机主体60的转轴。更为优选的，如图5和图6所示，通孔311上设置有轴承312，用以对电机主体60的转轴进行支撑。
如图3所示，作为一种优选的实施方式，冷却介质进口21和冷却介质出口22在外壳20的长度方向上分别位于外壳20的左端和右端。这样，可以让冷却介质在冷却空腔的长度方向上更为充分地流过整个冷却空腔，对电机主体60进行更为充分地冷却。更为优选的，冷却介质进口21和冷却介质出口22在外壳20的高度方向上分别位于外壳20的上端和下端。这样，可以让冷却介质在冷却空腔的高度方向上更为充分地流过整个冷却空腔，对电机主体60进行更为充分地冷却。
为了延长冷却介质在冷却空腔的流通时间，并让冷却介质整体都可以均匀地与内壳10换热。如图4所示，冷却空腔上设置有扰流结构40，扰流结构40用于让冷却介质在冷却空腔内流动充分，以根据不同使用环境匹配的冷却介质及结构，改善电机冷却效果，提升电机效率，提高压缩机能效。
优选的，如图4所示，扰流结构40包括设置在外壳20的内壁上的多条第一扰流筋，多条第一扰流筋沿外壳20的长度方向分布。第一扰流筋可以对流过外壳20的内壁的冷却介质进行扰流，使其均匀。更为优选的，扰流结构40还包括设置在内壳10的外壁上的多条第二扰流筋，多条第二扰流筋沿内壳10的长度方向分布。第二扰流筋可以对流过内壳10的外壁的冷却介质进行扰流，使其均匀。更为优选的，多条第一扰流筋和多条第二扰流筋在冷却空腔内错位设置。这样，可以更为充分地对冷却介质进行扰流，使其整体都被均匀开，以对内壳10进行降温。
如图4所示，优选的，安装空间11内设置有固定筋111。通过固定筋111可以对电机主体60进行固定，保证电机主体60的稳定性。更为优选的，固定筋111为多组，设置在安装空间11上与电机主体60相适配地位置处，以增强对电机主体60的固定效果。
如图5和图6所示，可拆卸封板32上形成有插入到内壳10和外壳20之间的凸出部321。通过让可拆卸封板32上的凸出部321插入到内壳10和外壳20之间，可以对冷却空腔起到更好地密封效果。优选的，内壳10和凸出部321之间设置有第一密封体51，第一 密封体51密封内壳10和凸出部321之间的间隙，保证内壳10和凸出部321之间的密封性。优选的，内壳10的外壁上开设有安装第一密封体51的第一密封槽，通过第一密封槽安装第一密封体51，可以对其进行固定。同样地，在外壳20和凸出部321之间设置有第二密封体52，第二密封体52密封外壳20和凸出部321之间的间隙，保证外壳20和凸出部321之间的密封性。优选的，外壳20的内壁上开设有安装第二密封体52的第二密封槽，通过第二密封槽安装第二密封体52，可以对其进行固定。
本公开提供了一种电机，该电机包括电机冷却组件和电机主体60，电机主体60安装在上述的电机冷却组件中。采用上述的电机冷却组件，可以对电机主体60进行充分地冷却，让电机主体60温度均匀，有利于提高电机效率。
本公开还提供了一种压缩机，包括上述的电机。应用上述的电机，可以使冷却介质在冷却空腔内流动充分换热，可根据不同使用环境匹配冷却介质及结构，改善电机冷却效果，提升电机效率，提高压缩机能效。
优选的，在本公开的技术方案中，冷却介质进口21在外壳20上与压缩机的吸气侧相靠近，冷却介质出口22在外壳20上与电机的绕组引出侧相靠近。这样，可以利用部分吸气冷量，也可反向布置。
在使用时，冷却介质从冷却介质进口21进入冷却空腔后，在扰流结构的引导下向底部流动，最终从冷却介质出口22排出，冷却介质在外部换热后循环使用。本公开中冷却介质进口21靠近压缩机吸气侧，冷却介质出口22靠近电机绕组引出侧，可以利用部分吸气冷量，也可反向布置。内壳10内部设置有多组固定筋111，可跟进需求增加数量，用于固定电机，电机固定可采用常规定位键或定位销方式，根据实际需求调整。轴承312部分与常规压缩机结构相同，壳体左侧可设计常规压缩机转子腔结构。壳体右侧为密封面，通过法兰结构与可拆卸封板32连接密封。为保证密封效果，在内壳10外壁及外壳20内壁分别设置密封槽，用于安装O型圈，从而保证冷却介质不泄漏。
作为一种可选的实施方式，压缩机可以为双级压缩机。如图5所示，在该实施方式中，可拆卸封板32上开设有通孔323，用以通过电机主体的转轴。优选的，在通孔323上还安装有轴承324，可以对电机主体的转轴进行支撑。由于在可拆卸封板32上需伸出转轴与第二级连接，因此可拆卸封板32采用锁紧螺母方式与外壳20上的法兰结构连接。
作为另一种图中未示出的可选的实施方式，压缩机为单级压缩机。在该实施方式中，可拆卸封板32上没有开设通过转轴的通孔，可拆卸封板32直接封盖在安装口12上。
作为另一种可选的实施方式，如图6所示，压缩机为吸气冷却式压缩机。在该实施方式中，在可拆卸封板32上增加进气口322，用于布置进气滤清器。此时内壳10和外壳20 为保证进气滤清器空间需加长，可以根据实际需求调整。由于此时电机不为独立冷却，壳体30电机固定筋设置需考虑流速问题，根据实际需求调整。
应用本公开的技术方案，由于冷却介质不与电机接触，介质的选择可为水或冷媒等其他介质，可根据需求调整。冷却空腔大小与扰流结构设置也可根据需求进行调整，流道间距可在30mm～50mm间选择或根据需求调整。采用本公开的技术方案，可提升电机冷却效果，提高电机效率，从而保证压缩机高效可靠运行。同时由于其结构可变，可适用多种结构形式，具有较好的推广性。
以上仅为本公开的优选实施例而已，并不用于限制本公开，对于本领域的技术人员来说，本公开实施例可以有各种更改和变化。凡在本公开的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本公开的保护范围之内。

Claims (23)

  1. 一种电机冷却组件，其特征在于，包括：
    内壳(10)，所述内壳(10)中形成有与电机主体(60)相适配的安装空间(11)；
    外壳(20)，套在所述内壳(10)的外部，所述外壳(20)与所述内壳(10)之间形成有冷却空腔，所述外壳(20)上设置有冷却介质进口(21)以及冷却介质出口(22)，所述冷却空腔通过所述冷却介质进口(21)和冷却介质出口(22)流通冷却介质。
  2. 根据权利要求1所述的电机冷却组件，其特征在于，所述外壳(20)与所述内壳(10)间隔设置，所述外壳(20)与所述内壳(10)之间通过封板连接。
  3. 根据权利要求2所述的电机冷却组件，其特征在于，所述封板包括固定封板(31)和可拆卸封板(32)，所述固定封板(31)和所述可拆卸封板(32)分别连接在所述外壳(20)和所述内壳(10)的两端。
  4. 根据权利要求3所述的电机冷却组件，其特征在于，所述内壳(10)上开设有安装口(12)，所述安装口(12)用于安装所述电机主体(60)，所述可拆卸封板(32)封盖在所述安装口(12)上。
  5. 根据权利要求3所述的电机冷却组件，其特征在于，所述固定封板(31)上开设有通孔(311)，所述通孔(311)用于通过所述电机主体(60)的转轴。
  6. 根据权利要求5所述的电机冷却组件，其特征在于，所述通孔(311)上设置有轴承(312)。
  7. 根据权利要求1所述的电机冷却组件，其特征在于，所述冷却介质进口(21)和所述冷却介质出口(22)在所述外壳(20)的长度方向上分别位于所述外壳(20)的左端和右端。
  8. 根据权利要求7所述的电机冷却组件，其特征在于，所述冷却介质进口(21)和所述冷却介质出口(22)在所述外壳(20)的高度方向上分别位于所述外壳(20)的上端和下端。
  9. 根据权利要求1所述的电机冷却组件，其特征在于，所述冷却空腔上设置有扰流结构(40)，所述扰流结构(40)用于让冷却介质在所述冷却空腔内流动充分。
  10. 根据权利要求9所述的电机冷却组件，其特征在于，所述扰流结构(40)包括设置在所述外壳(20)的内壁上的多条第一扰流筋，多条所述第一扰流筋沿所述外壳(20)的长度方向分布。
  11. 根据权利要求10所述的电机冷却组件，其特征在于，所述扰流结构(40)还包括设置在所述内壳(10)的外壁上的多条第二扰流筋，多条所述第二扰流筋沿所述内壳(10) 的长度方向分布。
  12. 根据权利要求11所述的电机冷却组件，其特征在于，多条所述第一扰流筋和多条所述第二扰流筋在所述冷却空腔内错位设置。
  13. 根据权利要求1所述的电机冷却组件，其特征在于，所述安装空间(11)内设置有固定筋(111)。
  14. 根据权利要求13所述的电机冷却组件，其特征在于，所述固定筋(111)为多组，设置在所述安装空间(11)上与所述电机主体(60)相适配地位置处。
  15. 根据权利要求3所述的电机冷却组件，其特征在于，所述可拆卸封板(32)上形成有插入到所述内壳(10)和所述外壳(20)之间的凸出部(321)。
  16. 根据权利要求15所述的电机冷却组件，其特征在于，所述内壳(10)和所述凸出部(321)之间设置有第一密封体(51)。
  17. 根据权利要求16所述的电机冷却组件，其特征在于，所述内壳(10)的外壁上开设有安装所述第一密封体(51)的第一密封槽。
  18. 根据权利要求15所述的电机冷却组件，其特征在于，所述外壳(20)和所述凸出部(321)之间设置有第二密封体(52)。
  19. 根据权利要求18所述的电机冷却组件，其特征在于，所述外壳(20)的内壁上开设有安装所述第二密封体(52)的第二密封槽。
  20. 一种电机，其特征在于，包括权利要求1至19中任一项所述的电机冷却组件和电机主体(60)，所述电机主体(60)安装在所述电机冷却组件中。
  21. 一种压缩机，包括电机，其特征在于，所述电机为权利要求20所述的电机。
  22. 根据权利要求21所述的压缩机，其特征在于，所述冷却介质进口(21)在外壳(20)上与所述压缩机的吸气侧相靠近，冷却介质出口(22)在外壳(20)上与所述电机的绕组引出侧相靠近。
  23. 根据权利要求22所述的压缩机，其特征在于，所述压缩机为单级压缩机、双级压缩机、吸气冷却式压缩机或者其任意组合。
PCT/CN2019/112398 2018-10-31 2019-10-22 电机冷却组件及电机及压缩机 WO2020088293A1 (zh)

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