Motor framework for improving oil circulation of compressor and compressor
The motor frame with oil barriers and conduits in rotary compressors addresses refrigerant oil mist issues by separating and redirecting oil back to the coil, reducing loss and improving heat dissipation to lower power consumption.
Patent Information
- Application Number
- CN202421657125.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-12
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-07-12
AI Technical Summary
In existing upright rotary compressors, the refrigerant carries the oil mist of the refrigerant, which leads to a reduction in oil, affects performance, and the coil heat cannot effectively dissipate heat, reducing power consumption.
The motor frame that improves the oil circulation of the compressor is adopted, and the gas-liquid separation is achieved through the oil barrier plate and drainage hole design, changing the flow path of the refrigeration machine oil, reducing the oil mist discharge, and returning the oil to the coil to take away heat.
Effectively reduce the discharge amount of refrigeration oil through the outlet pipe, improve oil circulation, reduce coil power consumption, and improve the overall performance of the compressor.
Smart Images
Figure CN223109757U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of compressors, and particularly relates to a motor skeleton and a compressor for improving the oil circulation of a compressor. Background Art
[0002] In the current vertical rotary compressor motor, stator circulation holes for the refrigerant and the refrigerating oil to pass through are provided on the stator core. When the compressor operates, the refrigerant passes through the stator circulation holes. At high temperatures, the refrigerant carries the refrigerating oil mist and is discharged from the discharge port in the form of a gas-liquid mixture into the air-conditioning system, resulting in a reduction of the refrigerating oil in the compressor, which easily causes an increase in power and affects the performance.
[0003] In addition, when the compressor operates, the coil generates a large amount of heat, and the heat cannot be dissipated sufficiently. The heat will reduce the power consumption of the coil, thereby affecting the overall performance of the compressor. Summary of the Utility Model
[0004] In order to solve the deficiencies of the existing technology, the utility model provides a motor skeleton and a compressor for improving the oil circulation of a compressor, realizing gas-liquid separation, reducing the discharge amount of the refrigerating oil passing through the outlet pipe, and improving the oil circulation; and changing the return path of the refrigerating oil, which can fully take away the heat of the coil, reduce the power consumption of the coil and improve the overall performance.
[0005] The technical purpose to be achieved by the utility model is realized through the following technical solutions:
[0006] The utility model provides a motor skeleton for improving the oil circulation of a compressor. The motor skeleton includes a skeleton housing, a plurality of sub-skeletons and a plurality of oil baffle plates. The sub-skeletons are used for winding stator windings, and the oil baffle plates are used for blocking the refrigerating oil flowing through the stator circulation holes;
[0007] The skeleton housing is of an annular structure. A plurality of the sub-skeletons are circumferentially and spacedly distributed around the inner side of the skeleton housing, and a plurality of the oil baffle plates are circumferentially and spacedly distributed around the outer side of the skeleton housing;
[0008] Drainage holes are formed in the skeleton housing at positions corresponding to the oil baffle plates. The drainage holes penetrate from the outer wall of the skeleton housing to the inner wall of the skeleton housing, and the drainage holes are located below the oil baffle plates.
[0009] In some implementation manners, the oil baffle plate is of a sheet structure, including an upper surface and a lower surface arranged opposite to each other. The upper surface is perpendicular to the axis of the skeleton housing. Using the sheet-structured oil baffle plate to block the refrigerating oil has the advantages of simple structure and remarkable effect.
[0010] In some implementations, the width of the oil deflector protruding in the first direction covers the width of the stator flow hole protruding in the first direction. The first direction is the direction away from the axis of the skeleton housing, ensuring that it can play a better blocking role in the refrigerant oil flowing through the stator flow hole.
[0011] In some implementations, the lower surface is an inclined surface, and the lower surface slopes from high to low in the direction of the drainage hole, which can play a role in sliding and draining the refrigerant oil gathered at the lower surface and drain it through the drainage hole.
[0012] In some implementations, the upper surface is a flat straight surface, and the inclination angle between the lower surface and the upper surface is 10° - 60°, ensuring a better sliding and draining effect.
[0013] In some implementations, both ends of the oil deflector distributed circumferentially along the outer side of the skeleton housing are respectively connected with a first baffle and a second baffle. The drainage hole is correspondingly located in the area surrounded by the oil deflector, the first baffle and the second baffle. Setting the first baffle and the second baffle can improve the blocking effect on the refrigerant oil flowing through the stator flow hole and enable the refrigerant and the refrigerant oil to achieve gas-liquid separation through the drainage hole.
[0014] In some implementations, the drainage hole corresponds to the position of the sub-skeleton, so that the refrigerant oil flowing through the drainage hole flows back through the stator coil, thereby more fully taking away the coil heat, reducing the coil power consumption, and improving the overall performance.
[0015] The present application also provides a compressor, including a stator core and the motor skeleton according to any one of the above;
[0016] A plurality of stator flow holes are circumferentially and spacedly distributed on the outer side of the stator core, and the skeleton housing is connected to the upper end surface of the stator core;
[0017] The number of the stator flow holes is the same as or different from the number of the oil deflectors, realizing gas-liquid separation, reducing the discharge amount of the refrigerant oil through the outlet pipe, improving the oil circulation, and changing the refrigerant oil return path, which can fully take away the coil heat, reduce the coil power consumption and improve the overall performance.
[0018] In some implementations, it further includes a compressor housing, and the compressor housing is sleeved outside the stator core and the motor skeleton. Under the blocking effects in different directions of the compressor housing and the oil deflector, the refrigerant oil flowing through the stator flow hole can change the path and pass through the drainage hole.
[0019] In some implementations, the stator core and the motor skeleton are both in close contact with the compressor housing, reducing the discharge amount of the refrigerant oil through the outlet pipe and improving the oil circulation.
[0020] In summary, the present utility model has at least the following beneficial effects:
[0021] 1. The motor skeleton for improving the oil circulation of the compressor oil provided by the present utility model is provided with an oil baffle for blocking the refrigerant oil flowing through the stator through holes, and is provided with a drainage hole to achieve gas-liquid separation. While ensuring the circulation of the refrigerant, the discharge amount of the refrigerant oil through the outlet pipe is reduced, and the oil circulation is improved.
[0022] 2. The compressor provided by the present utility model changes the return path of the refrigerant oil through the drainage hole on the oil baffle, so that the return path of the refrigerant oil passes through the stator coil, thereby more fully taking away the heat of the coil, reducing the coil power consumption, and improving the overall performance. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 is a schematic structural diagram of the motor skeleton of Embodiment 1 of the present utility model;
[0024] Figure 2 is a schematic structural diagram of the motor skeleton of Embodiment 2 of the present utility model;
[0025] Figure 3 is a schematic structural diagram of the motor skeleton of Embodiment 3 of the present utility model;
[0026] Figure 4 is a schematic structural diagram of the compressor of Embodiment 4 of the present utility model;
[0027] Figure 5 is a schematic structural diagram of the motor skeleton and the stator core of Embodiment 4 of the present utility model;
[0028] 100. Skeleton housing;
[0029] 200. Sub-skeleton;
[0030] 300. Oil baffle; 310. Upper surface; 320. Lower surface;
[0031] 400. Drainage hole;
[0032] 500. First baffle;
[0033] 600. Second baffle;
[0034] 700. Stator core; 710. Stator through hole;
[0035] 800. Compressor housing. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. The described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.
[0037] Therefore, the detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the scope of protection of the present utility model.
[0038] Example 1:
[0039] Please refer to Figure 1 , a motor skeleton for improving the oil circulation of the compressor oil. The motor skeleton is usually used to be installed on the end face of the stator core 700, such as the upper end face or the lower end face.
[0040] The motor skeleton includes a skeleton housing 100, a plurality of sub-skeletons 200, and a plurality of oil baffle plates 300. Among them, the sub-skeletons 200 are used to wind the stator windings, and the oil baffle plates 300 are used to block the refrigeration oil flowing through the stator through holes. Thus, it can be known that the number of sub-skeletons 200 matches the number of stator teeth of the stator core, and the sub-skeletons 200 correspond to the positions of the stator teeth one by one to facilitate the winding of the stator windings. The number of oil baffle plates 300 may be the same as or different from the number of stator through holes. For example, when the numbers of both are the same, each oil baffle plate 300 corresponds to the position of each stator through hole. If the numbers of both are different, the same oil baffle plate 300 may correspond to the positions of adjacent multiple stator through holes. This embodiment does not limit this.
[0041] The skeleton housing 100 is of an annular structure, and a plurality of sub-skeletons 200 are circumferentially and spacedly distributed around the inner side of the skeleton housing 100, and a plurality of oil baffle plates 300 are circumferentially and spacedly distributed around the outer side of the skeleton housing 100.
[0042] Understanding in combination with the structure of a conventional stator core, it can be known that the stator core is usually a hollow cylindrical structure, the upper and lower end faces thereof are annular surfaces, each stator tooth extends along the axial direction of the stator core, and all stator teeth are circumferentially spaced apart on the inner side of the stator core, and stator flow holes are circumferentially spaced apart on the outer side of the stator core. Therefore, correspondingly, the skeleton housing 100 is arranged as an annular structure, and the skeleton housing 100 is connected to the upper or lower end face of the stator core, so that a plurality of sub-skeletons 200 circumferentially distributed on the inner side of the skeleton housing 100 respectively correspond to the positions of the stator teeth one by one, and a plurality of oil baffle plates 300 circumferentially spaced apart on the outer side of the skeleton housing 100 are used to block the refrigerating oil flowing through the stator flow holes.
[0043] Drainage holes 400 are formed at positions corresponding to the oil baffle plates 300 on the skeleton housing 100. The drainage holes 400 penetrate from the outer wall of the skeleton housing 100 to the inner wall of the skeleton housing 100, and the drainage holes 400 are located below the oil baffle plates 300.
[0044] During the refrigeration process, the refrigerant is compressed by the compressor to become a high-temperature and high-pressure gaseous refrigerant. Subsequently, the gaseous refrigerant is discharged through the compressor discharge port and enters the air-conditioning system to complete refrigeration. In the actual operation of the compressor, the refrigerant will carry the refrigerating oil mist and be discharged from the discharge port in the form of a gas-liquid mixture and enter the air-conditioning system, resulting in a reduction in the refrigerating oil in the compressor, which is likely to cause an increase in power and affect performance.
[0045] Based on this, in the motor skeleton provided in this embodiment, by arranging the oil baffle plates 300 to block the refrigerating oil flowing through the stator flow holes, the refrigerating oil flowing through the stator flow holes changes its flow path under the blocking action of the oil baffle plates 300 and passes through the drainage holes 400. After the refrigerant is discharged from the drainage holes 400, it can go up along the inner wall of the skeleton housing 100, while the refrigerating oil adheres to the oil baffle plates 300. When it accumulates to a certain weight, under the action of gravity, the refrigerating oil flows into the coil along the inner wall of the skeleton housing 100 after passing through the drainage holes 400. This process can achieve a certain degree of gas-liquid separation, reduce the discharge of refrigerating oil from the outlet pipe, promote oil circulation, and at the same time, the reflux of the refrigerating oil can fully carry away the heat of the coil, reduce the coil temperature and resistance, thereby achieving the effect of reducing power consumption.
[0046] Embodiment 2:
[0047] The difference between this embodiment and Embodiment 1 is that this embodiment further optimizes the structure of the motor skeleton of the present invention. Please refer to Figure 2 .
[0048] The oil baffle 300 is a sheet-like structure, including an upper surface 310 and a lower surface 320 which are arranged opposite to each other. The upper surface 310 is perpendicular to the axis of the frame housing 100. The sheet-like oil baffle 300 is used to block the refrigeration oil, which has the advantages of simple structure and remarkable effect.
[0049] Specifically, the width by which the oil baffle 300 protrudes in the first direction covers the width by which the stator flow hole protrudes in the first direction. The first direction is the direction away from the axis of the frame housing 100, ensuring that it can preferably block the refrigeration oil flowing through the stator flow hole.
[0050] In some embodiments, the lower surface 320 is an inclined surface, and the lower surface 320 inclines from high to low towards the drainage hole 400, which can play a role in sliding and draining the refrigeration oil accumulated on the lower surface 320, and drain it through the drainage hole 400.
[0051] In specific applications, the oil baffle 300 blocks the refrigeration oil flowing through the stator flow hole, so that the refrigeration oil flowing through the stator flow hole changes its flow path under the blocking of the oil baffle 300 and passes through from the drainage hole 400. After the refrigerant is discharged from the drainage hole 400, it can go up along the inner wall of the frame housing 100, while the refrigeration oil adheres to the lower surface 320 of the oil baffle 300. When it accumulates to a certain weight, under the action of gravity, and because the lower surface 320 is designed as an inclined surface, it can ensure that the refrigeration oil slides and drains the drainage hole 400 to the inner wall of the frame housing 100, thus flowing into the coil, achieving gas-liquid separation, reducing the discharge of refrigeration oil from the outlet pipe, and promoting the effect of oil circulation. At the same time, the reflux of the refrigeration oil can fully take away the heat of the coil, reduce the coil temperature and resistance, thereby achieving the effect of reducing power consumption.
[0052] Furthermore, the upper surface 310 is a flat straight surface, and the inclination angle between the lower surface 320 and the upper surface 310 is 10° - 60°, ensuring a better sliding and draining effect.
[0053] For example, the inclination angle between the lower surface 320 and the upper surface 310 is 30°. Under the action of the 30° inclination angle, combined with the gravity of the refrigeration oil itself, the refrigeration oil can slide and drain better through the lower surface 320 through the drainage hole 400, and thus enter the inner wall of the frame housing 100.
[0054] Example 3:
[0055] The difference between this embodiment and Embodiment 1 is that this embodiment further optimizes the structure of the motor frame of the present invention. Please refer to Figure 3 .
[0056] The two ends of the oil baffle 300 distributed circumferentially along the outer side of the frame housing 100 are respectively connected to a first baffle 500 and a second baffle 600. The drainage holes 400 are correspondingly located within the area enclosed by the oil baffle 300, the first baffle 500, and the second baffle 600. The provision of the first baffle 500 and the second baffle 600 can improve the blocking effect on the refrigeration oil flowing through the stator flow holes, and enable the refrigerant and the refrigeration oil to achieve gas-liquid separation through the drainage holes 400.
[0057] For example, the oil baffle 300, the first baffle 500, and the second baffle 600 are in an enclosed state, so that the refrigeration oil flowing through the stator flow holes is blocked in different directions, thereby changing the flow path and passing through the drainage holes 400.
[0058] Furthermore, the drainage holes 400 correspond to the position of the sub-frame 200, so that the refrigeration oil flowing through the drainage holes 400 flows back through the stator coil, thereby more fully removing the heat of the coil, reducing the coil power consumption, and improving the overall performance.
[0059] It can be known that the stator teeth and the sub-frame 200 are wound with a stator winding. During operation, the stator winding generates heat, so that when the refrigeration oil enters the inner side wall of the frame housing 100 through the drainage holes 400, it can pass through the position corresponding to the stator winding, thereby more fully removing the heat of the coil and achieving the effect of improving the overall performance.
[0060] Embodiment 4:
[0061] On the basis of the above embodiment, this embodiment provides a compressor. Please refer to Figure 4 and Figure 5 .
[0062] A compressor includes a stator core 700 and the motor frame in any of the above embodiments.
[0063] A plurality of stator flow holes 710 are circumferentially and spacedly distributed on the outer side of the stator core 700. The frame housing 100 is connected to the upper end face of the stator core 700. The number of the stator flow holes 710 may be the same as or different from the number of the oil baffles 300. There is an oil baffle 300 above each stator flow hole, and a drainage hole 400 is provided at the position corresponding to the oil baffle 300. Through the blocking effect of the oil baffle 300 and the guiding effect of the drainage hole 400, gas-liquid separation can be achieved, the discharge amount of the refrigeration oil through the outlet pipe can be reduced, the oil circulation can be improved, and the return path of the refrigeration oil can be changed. The heat of the coil can be fully removed, the coil power consumption can be reduced, and the overall performance can be improved.
[0064] When the number of stator flow holes is the same as the number of oil baffle plates 300, each oil baffle plate 300 corresponds to the position of each stator flow hole 710. If the numbers are different, the same oil baffle plate 300 can correspond to the positions of adjacent multiple stator flow holes 710 to ensure that all stator flow holes 710 are blocked.
[0065] In some embodiments, the compressor further includes a compressor housing 800 sleeved outside the stator core 700 and the motor skeleton. Under the blocking effects of the compressor housing 800 and the oil baffle plates 300 in different directions, it is ensured that the refrigeration oil can only be discharged through the stator flow holes, and the refrigeration oil flowing through the stator flow holes can change its path and pass through the drainage holes 400.
[0066] Furthermore, the stator core 700 and the motor skeleton are in close contact with the compressor housing 800 to prevent the refrigeration oil from overflowing to the circumference of the stator flow holes, and to ensure that the refrigeration oil can only be discharged through the drainage holes 400, reducing the discharge amount of the refrigeration oil through the outlet pipe and improving the oil circulation.
[0067] The compressor provided by the present utility model changes the return path of the refrigeration oil through the drainage holes on the oil baffle plate, so that the return path of the refrigeration oil passes through the stator coil, thereby being able to more fully take away the heat of the coil, reduce the coil power consumption, and improve the overall performance.
[0068] In the present utility model, unless otherwise clearly specified and defined, the terms "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0069] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of this utility model is usually placed. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.
[0070] In addition, terms such as "horizontal", "vertical", "overhanging", etc. do not require that the components be absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but may be slightly inclined.
[0071] In the present utility model, unless otherwise clearly specified and defined, the first feature being above or below the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being above, over and on the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being below, under and beneath the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is less than that of the second feature.
[0072] Although the description of the present utility model is made in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and variations based on the above content. Therefore, all such substitutions, improvements and variations are included within the spirit and scope of the appended claims.
Claims
1. A motor skeleton for improving the oil circulation of a compressor, characterized in that, The motor skeleton includes a skeleton housing (100), a plurality of sub-skeletons (200), and a plurality of oil baffle plates (300). The sub-skeletons (200) are used for winding the stator windings, and the oil baffle plates (300) are used to block the refrigeration oil flowing through the stator through-holes. The skeleton housing (100) is of an annular structure. A plurality of the sub-skeletons (200) are circumferentially and spacedly distributed around the inner circumference of the skeleton housing (100), and a plurality of the oil baffle plates (300) are circumferentially and spacedly distributed around the outer circumference of the skeleton housing (100). Drainage holes (400) are formed in the skeleton housing (100) at positions corresponding to the oil baffle plates (300). The drainage holes (400) penetrate from the outer wall of the skeleton housing (100) to the inner wall of the skeleton housing (100), and the drainage holes (400) are located below the oil baffle plates (300).
2. The motor skeleton for improving the oil circulation of the compressor oil according to claim 1, wherein The oil baffle plate (300) is of a sheet-like structure, including an upper surface (310) and a lower surface (320) arranged opposite to each other. The upper surface (310) is perpendicular to the axis of the skeleton housing (100).
3. The motor frame for improving the oil circulation of the compressor oil according to claim 2, wherein The width by which the oil baffle plate (300) protrudes in the first direction covers the width by which the stator through-hole protrudes in the first direction. The first direction is the direction away from the axis of the skeleton housing (100).
4. The motor frame for improving the oil circulation of the compressor oil according to claim 2, wherein The lower surface (320) is an inclined surface, and the lower surface (320) slopes from high to low in the direction of the drainage hole (400).
5. The motor frame for improving the oil circulation of the compressor oil according to claim 4, wherein, The upper surface (310) is a flat surface, and the inclination angle between the lower surface (320) and the upper surface (310) is 10° - 60°.
6. The motor skeleton for improving the oil circulation of the compressor oil according to claim 1, characterized in that, First baffles (500) and second baffles (600) are respectively connected to both ends of the oil baffle plate (300) distributed along the outer circumference of the skeleton housing (100). The drainage hole (400) is correspondingly located in the area surrounded by the oil baffle plate (300), the first baffle (500), and the second baffle (600).
7. The motor frame for improving the oil circulation of the compressor oil according to claim 1, characterized in that, The drainage hole (400) corresponds to the position of the sub-skeleton (200).
8. A compressor, characterized in that, It includes a stator core (700) and the motor skeleton according to any one of claims 1 - 7. A plurality of stator through-holes (710) are circumferentially and spacedly distributed on the outer circumference of the stator core (700). The skeleton housing (100) is connected to the upper end surface of the stator core (700). The number of the stator through-holes (710) is the same as or different from the number of the oil baffle plates (300).
9. The compressor according to claim 8, characterized in that, It further includes a compressor housing (800). The compressor housing (800) is sleeved outside the stator core (700) and the motor skeleton.
10. The compressor according to claim 9, characterized in that, Both the stator core (700) and the motor skeleton are in close contact with the compressor housing (800).