Oil baffle end cover for improving oil circulation of compressor, motor frame and compressor

Abstract

The utility model relates to the technical field of compressors, and discloses an oil baffle end cover for improving compressor oil circulation, a motor frame and a compressor, the oil baffle end cover comprises a first baffle plate and a second baffle plate, the first baffle plate is located in the middle of the oil baffle end cover, the second baffle plate is located at the edge of the oil baffle end cover, and the first baffle plate is located in the middle of the motor frame. The second baffle is located at the upper end of the first baffle, a plurality of first through holes used for discharging refrigerants and oil mist upwards are formed in the first baffle, the hole diameters of the first through holes are gradually decreased from top to bottom, and a plurality of side discharging structures used for laterally discharging the refrigerants and the oil mist are arranged on the second baffle; the utility model has the following technical effects: the flow velocity and flow path of refrigerant and oil mist are changed, the oil circulation of the compressor is improved, the performance of the compressor is ensured, and the service life of pumping parts is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to compressor technical field, concretely relates to an oil blocking end cover, motor frame and compressor that improve compressor oil circulation. BACKGROUND

[0002] Rotary compressor is the compressor that compresses and transports gas by the rotary motion of rotor in cylinder.

[0003] At present, rotary compressor, especially large displacement model, more often appears the situation of low oil circulation rate, and the main reason of low oil circulation rate is that when the compressor is running, the refrigerant carries the refrigeration oil oil mist into the air conditioning system under high temperature, causes part refrigeration oil to adhere in the system pipeline, makes the refrigeration oil in the compressor reduce, and the reduction of refrigeration oil easily influences system heat dissipation, thereby causes power to rise, influences performance, in addition, will also influence lubrication between pump parts, causes abrasion to aggravate. UTILITY MODEL CONTENTS

[0004] In order to solve the insufficient of prior art, the utility model provides an oil blocking end cover, motor frame and compressor that improve compressor oil circulation, realize the purpose that improve compressor oil circulation, ensure the performance of compressor and improve the service life of pump parts.

[0005] The technical purposes reached by the utility model are realized through the following technical schemes:

[0006] The utility model provides an oil blocking end cover that improves compressor oil circulation, the oil blocking end cover includes first baffle and second baffle, the first baffle is located in the middle position of the oil blocking end cover, the second baffle is located in the edge position of the oil blocking end cover, and the second baffle is located in the upper end position of the first baffle;

[0007] The first baffle is equipped with a plurality of first through holes for the upward discharge of refrigerant and oil mist, and the hole diameter of the first through hole decreases from top to bottom;

[0008] The second baffle is equipped with a plurality of side discharge structures for the lateral discharge of refrigerant and oil mist.

[0009] In some implementation modes, the side discharge structure includes a second through hole and a shielding part;

[0010] The shielding part is shielded above the second through hole, and the shielding part is provided with an opening towards the outer circumferential direction of the oil blocking end cover, realizing the effect that refrigerant and oil mist are laterally diffused from the center to the outer circumferential direction.

[0011] In some implementations, the oil-blocking end cover further comprises a first baffle connected between the first baffle and the second baffle, ensuring that the refrigerant and oil mist can only pass through the first through hole and the side discharge structure to be discharged outward, and achieving the purpose of improving the oil circulation of the compressor.

[0012] In some implementations, the cross-sectional area of the first baffle gradually increases in a direction away from the first baffle, facilitating the oil mist to fall back under the action of its own gravity after being attached to the first baffle.

[0013] The application further provides a motor frame comprising a frame body and the oil-blocking end cover described in any of the above.

[0014] The outer side of the frame body is formed with a first connecting portion, and the edge of the second baffle extends downward with a second baffle, which is provided with a second connecting portion for connecting with the first connecting portion, thereby realizing the connecting effect of the frame body and the oil-blocking end cover and ensuring the use stability of the oil-blocking end cover.

[0015] In some implementations, the first connecting portion is a limiting hole, and the second connecting portion is a limiting block, so that the frame body and the oil-blocking end cover are connected through the limiting hole and the limiting block, thereby improving the assembly efficiency.

[0016] The application further provides a compressor comprising a rotor, a stator and the motor frame described in any of the above.

[0017] The rotor is arranged to rotate on the inner side of the stator, and the frame body is connected to the upper end of the stator.

[0018] The oil-blocking end cover covers the gap between the rotor and the stator, thereby ensuring the oil-blocking effect of the oil-blocking end cover.

[0019] In some implementations, the outer periphery of the stator is formed with a plurality of flow-through grooves extending in the radial direction, and the oil-blocking end cover covers the flow-through grooves, thereby ensuring the oil-blocking effect of the oil-blocking end cover.

[0020] In some implementations, the compressor further comprises a housing.

[0021] The stator and the motor frame are arranged in the housing, thereby playing a containing and fixing role on the stator and the motor frame.

[0022] In some implementations, the outer diameter of the oil-blocking end cover is 4-6mm smaller than the inner diameter of the housing, thereby reserving a certain gap for the oil mist to flow back to the bottom of the compressor.

[0023] In summary, the application has at least the following advantages:

[0024] 1. The oil baffle end cover for improving compressor oil circulation, which is characterized in that: the first through hole is arranged in a decreasing hole diameter from top to bottom, so that when the refrigerant and oil mist pass through, the flow rate of the refrigerant and oil mist can be reduced, which is beneficial to retain the refrigeration oil in the compressor; the side discharge structure disrupts the movement track of the refrigerant and oil mist, so that the refrigerant and oil mist are laterally diffused from the center to the outer periphery and backflow to the bottom of the compressor, effectively improving the compressor oil circulation, ensuring the compressor performance and prolonging the service life of the pumping parts.

[0025] 2. The motor frame, which is characterized in that: after the oil baffle end cover for improving compressor oil circulation is applied, the refrigerant circulation is ensured, and the discharge amount of the refrigeration oil is reduced, so that the purpose of improving oil circulation is achieved.

[0026] 3. The compressor, which is characterized in that: the running performance and the lubricating effect between the pumping parts are ensured, and the service life of the pumping parts is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 The structure diagram of the oil baffle end cover provided in the embodiment 1 of the utility model;

[0028] Figure 2 The cross-sectional view of the oil baffle end cover provided in the embodiment 1 of the utility model;

[0029] Figure 3 The structure diagram of the motor frame provided in the embodiment 2 of the utility model;

[0030] Figure 4 The explosion view of the motor frame provided in the embodiment 2 of the utility model;

[0031] Figure 5 The structure diagram of the compressor provided in the embodiment 3 of the utility model;

[0032] Figure 6 The explosion view of the compressor provided in the embodiment 3 of the utility model;

[0033] 100, oil baffle end cover; 110, first baffle; 120, second baffle; 130, first through hole; 140, side discharge structure; 141, second through hole; 142, shielding part; 142a, opening; 150, first surrounding plate; 160, second surrounding plate; 161, second connecting part;

[0034] 200, frame body; 210, first connecting part;

[0035] 300, rotor;

[0036] 400, stator; 410, flow-through groove;

[0037] 500. Housing. DETAILED DESCRIPTION

[0038] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. The described embodiments are some embodiments of the present application, but not all the embodiments of the present application.

[0039] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0040] Example 1

[0041] Please refer to Figure 1 and Figure 2 An oil-blocking end cover for improving oil circulation of a compressor, the oil-blocking end cover 100 comprises a first baffle 110 and a second baffle 120, the first baffle 110 is located at a middle position of the oil-blocking end cover 100, the second baffle 120 is located at an edge position of the oil-blocking end cover 100, and the second baffle 120 is located at an upper end position of the first baffle 110.

[0042] For example, the first baffle 110 is a circular plate structure, and the second baffle 120 is a circular ring plate structure. In combination with the positions of the first baffle 110 and the second baffle 120 on the oil-blocking end cover 100, it can be known that the first baffle 110 is located inside the second baffle 120, and there is a height difference between the first baffle 110 and the second baffle 120.

[0043] The difference in position distribution of the first baffle 110 and the second baffle 120 can shield the refrigerant and oil mist passing through different positions, and the height difference between the first baffle 110 and the second baffle 120 can disperse part of the refrigerant and oil mist, so as to further achieve the purpose of improving oil circulation.

[0044] A plurality of first through holes 130 for discharging the refrigerant and oil mist upward are arranged on the first baffle 110. As described above, the first baffle 110 is a circular plate structure, and the plurality of first through holes 130 can be uniformly or non-uniformly distributed on the first baffle 110. In the present embodiment, the distribution mode of the plurality of first through holes 130, the number and aperture size of the first through holes 130 are not specifically limited, and can be adjusted according to the implementation requirements.

[0045] The hole diameter of the first through hole 130 decreases from top to bottom. For example, the first baffle 110 includes an upper surface and a lower surface arranged oppositely, the first through hole 130 penetrates the upper surface and the lower surface, and the first through hole 130 is a tapered hole. The hole diameter gradually decreases along the upper surface of the first baffle 110 towards the lower surface of the first baffle 110. This structure design can reduce the flow rate of the refrigerant and oil mist when passing through, which is beneficial to retain the refrigerant oil in the compressor.

[0046] The second baffle 120 is provided with a plurality of side discharge structures 140 for laterally discharging the refrigerant and oil mist. As known, the second baffle 120 is located at the upper end of the first baffle 110. This height difference arrangement can disperse part of the refrigerant and oil mist. The side discharge structure 140 changes the original upward discharge of the refrigerant and oil mist to lateral discharge, i.e., diffuses towards the outer periphery of the oil blocking end cover relative to the center of the oil blocking end cover. When the oil blocking end cover is applied to the compressor, part of the oil mist can adhere to the inner wall of the compressor shell and flow back to the bottom of the compressor due to its own gravity, thereby improving the oil circulation of the compressor.

[0047] It should be noted that the number of side discharge structures 140 and the distribution relationship between the side discharge structures 140 are not specifically limited in the present embodiment and can be adjusted according to actual needs. For example, the number of side discharge structures 140 is six, and the six side discharge structures 140 are uniformly and circumferentially distributed on the second baffle 120 to achieve the effect of uniformly shielding and diffusing the refrigerant and oil mist in the circumferential direction.

[0048] In some embodiments, the side discharge structure 140 includes a second through hole 141 and a shielding portion 142. The shielding portion 142 is shielded above the second through hole 141, and the shielding portion 142 is provided with an opening 142a towards the outer periphery of the oil blocking end cover to achieve the effect of laterally diffusing the refrigerant and oil mist from the center to the outer periphery.

[0049] For example, the shielding portion 142 has a 7-shaped structure including a vertical shielding segment and a horizontal shielding segment. The vertical shielding segment is located on one side of the second through hole 141 and is close to the first baffle 110. The horizontal shielding segment is located above the second through hole 141. The opening 142a is located on the opposite side of the vertical shielding segment, i.e., towards the outer periphery of the oil blocking end cover. The structure design of the shielding portion 142 can make the refrigerant and oil mist laterally discharge through the opening 142a when discharging upwards through the second through hole 141, due to the shielding effect of the horizontal shielding segment in the upward direction and the shielding effect of the vertical shielding segment in the lateral direction, thereby achieving the effect of laterally diffusing the refrigerant and oil mist from the center to the outer periphery.

[0050] Of course, the structure of the shielding portion 142 is not specifically limited in the present embodiment, and can be appropriately adjusted according to actual needs, as long as the shielding effect on the upper side of the second through hole 141 and the effect of causing the refrigerant and the oil mist to laterally spread from the center to the outer circumferential direction are achieved.

[0051] In some embodiments, the oil blocking end cover further comprises a first surrounding plate 150 connected between the first baffle plate 110 and the second baffle plate 120, to ensure that the refrigerant and the oil mist can only be discharged outward through the first through hole 130 and the side discharge structure 140, thereby improving the compressor oil circulation.

[0052] That is, the first baffle plate 110 is designed to be sunken relative to the second baffle plate 120, and the first surrounding plate 150 is connected between the first baffle plate 110 and the second baffle plate 120. On the one hand, it can ensure that there is no gap between the first baffle plate 110 and the second baffle plate 120 for the refrigerant and the oil mist to pass through directly. On the other hand, it can ensure that part of the oil mist discharged upward through the first through hole 130 of the first baffle plate 110 adheres to the first surrounding plate 150, thereby reducing the refrigeration oil mist entering the air conditioning system and improving the compressor oil circulation.

[0053] Further, the cross-sectional area of the first surrounding plate 150 gradually increases in a direction away from the first baffle plate 110, so as to facilitate the oil mist adhering to the first surrounding plate 150 to fall back under the action of its own gravity.

[0054] For example, the first surrounding plate 150 is in the shape of a hollow circular truncated cone, and its diameter gradually increases from bottom to top. That is, the first surrounding plate 150 is designed to have a slope, which can increase the area for the oil mist to adhere to and facilitate the oil mist to fall back under its own gravity after being collected.

[0055] The oil blocking end cover for improving compressor oil circulation provided in the present embodiment can reduce the flow rate of the refrigerant and the oil mist when they pass through the first through hole 130 by setting the first through hole 130 to have a hole diameter that decreases from top to bottom, which is conducive to retaining the refrigeration oil in the compressor. The side discharge structure 140 can disrupt the movement track of the refrigerant and the oil mist, causing the refrigerant and the oil mist to laterally spread from the center to the outer circumferential direction and flow back to the bottom of the compressor, thereby effectively improving the compressor oil circulation and ensuring the performance of the compressor and prolonging the service life of the pump parts.

[0056] Embodiment 2:

[0057] The present embodiment provides a motor frame on the basis of Embodiment 1. Please refer to Figure 3 and Figure 4 .

[0058] A motor frame comprises a frame body 200 and the oil blocking end cover 100 in the above embodiment 1, a first connecting part 210 is formed on the outer side of the frame body 200, a second baffle 160 extends downward at the edge of the second baffle 120, and a second connecting part 161 is arranged on the second baffle 160 and used for connecting the first connecting part 210, the connection between the frame body 200 and the oil blocking end cover is realized through the first connecting part 210 and the second connecting part 161, and the use stability of the oil blocking end cover is ensured.

[0059] The second baffle 160 extends downward at the edge of the second baffle 120, and the second connecting part 161 is connected to the first connecting part 210 on the outer side of the frame body 200, so that the refrigerant and the oil mist can be enclosed in the second baffle 160, and it is further ensured that the refrigerant and the oil mist can only be discharged through the first through hole 130 and the side discharge structure 140, so that the purpose of improving the compressor oil circulation is achieved.

[0060] Further, the first connecting part 210 is a limiting hole, and the second connecting part 161 is a limiting block, the limiting block is limited in the limiting hole, and the connection relationship between the frame body 200 and the oil blocking end cover is established, the connection mode can be manually completed without the help of external installation tools, and the assembly efficiency is effectively improved.

[0061] In one example, the number of the first connecting part 210 and the second connecting part 161 is three, and the three first connecting parts 210 are uniformly and spacedly distributed along the outer side of the frame body 200, and it can be understood that the distribution positions of the three second connecting parts 161 on the second baffle 160 correspond to the three first connecting parts 210 one by one, so as to play a uniform and stable connection role.

[0062] The motor frame provided in the embodiment can reduce the discharge amount of the refrigeration oil while ensuring the circulation of the refrigerant after the oil blocking end cover for improving the compressor oil circulation is applied, so that the purpose of improving the oil circulation is achieved.

[0063] Embodiment 3

[0064] The embodiment provides a compressor on the basis of the embodiment 2, please refer to Figure 5 and Figure 6 .

[0065] A compressor comprises a rotor 300, a stator 400 and the motor frame in the above embodiment 2, the rotor 300 is arranged to rotate on the inner side of the stator 400, and the frame body 200 is connected to the upper end of the stator 400; the oil blocking end cover covers the gap between the rotor 300 and the stator 400, and the oil blocking effect of the oil blocking end cover is ensured.

[0066] Since the rotor 300 rotates at the inner side of the stator 400, there is a certain gap between the rotor 300 and the inner side of the stator 400, and the refrigerant and the oil mist can be discharged through the gap, so that the oil blocking end cover covers the gap between the rotor 300 and the stator 400 to ensure the better shielding effect on the discharged refrigerant and oil mist.

[0067] Further, the outer periphery of the stator 400 is formed with a plurality of flow-through grooves 410 extending in the radial direction, and the oil blocking end cover covers the flow-through grooves 410 to ensure the oil blocking effect of the oil blocking end cover.

[0068] For example, the plurality of flow-through grooves 410 are uniformly distributed in the circumferential direction on the outer periphery of the stator 400, and the flow-through grooves 410 are used for the discharge of the refrigerant and the oil mist during the operation of the compressor, so that the oil blocking end cover is arranged to cover the flow-through grooves 410 to ensure the shielding effect on the refrigerant and the oil mist, and it can also be understood that the outer diameter of the oil blocking end cover is greater than the outer diameter of the stator 400, so that the flow-through grooves 410 on the stator 400 can be covered.

[0069] In some embodiments, the compressor further comprises a housing 500, and the stator 400 and the motor frame are arranged in the housing 500 to accommodate and fix the stator 400 and the motor frame.

[0070] Further, the outer diameter of the oil blocking end cover is smaller than the inner diameter of the housing 500 by 4-6mm, for example, the outer diameter of the oil blocking end cover is smaller than the inner diameter of the housing 500 by 5mm, and a certain gap is reserved between the outer wall of the oil blocking end cover and the inner wall of the housing 500 to allow the oil mist to flow back to the bottom of the compressor.

[0071] Specifically, during the operation of the compressor, the refrigerant and the oil mist are laterally diffused from the center to the outer periphery after passing through the side discharge structure 140, and part of the oil mist adheres to the inner wall of the housing 500 and flows back to the bottom of the compressor through the gap between the outer wall of the oil blocking end cover and the inner wall of the housing 500 under the influence of its own gravity.

[0072] The compressor provided by the embodiment can ensure the operation performance and the lubrication between the pump parts, and improve the service life of the pump parts.

[0073] In the utility model, unless another definite provision and limitation, the terms "mounting", "connecting", "connecting", "fixing" and the like terms should be understood in a broad sense, for example, it can be fixed connection, or it can be detachable connection, or it can be integrated, it can be mechanical connection, or it can be electrical connection, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication between two elements or the interaction between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0074] In the description of the utility model, it is to explain, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "internal", "external" and so on indicate the orientation or position relation is based on the orientation or position relation shown in the drawing, or is the orientation or position relation of the utility model product when using usual placement, is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element indicated must have a particular orientation, is constructed and operated with a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

Claims

1. A shroud for improving oil circulation in a compressor, the shroud comprising: The oil-blocking end cover (100) comprises a first baffle (110) and a second baffle (120), the first baffle (110) is located at a middle position of the oil-blocking end cover (100), the second baffle (120) is located at an edge position of the oil-blocking end cover (100), and the second baffle (120) is located at an upper end position of the first baffle (110); A plurality of first through holes (130) for upward discharge of refrigerant and oil mist are arranged on the first baffle (110), and the hole diameter of the first through holes (130) decreases from top to bottom; A plurality of side discharge structures (140) for lateral discharge of refrigerant and oil mist are arranged on the second baffle (120).

2. The oil retention end cover that improves circulation of compressor oil according to claim 1, characterized by, The side discharge structure (140) comprises a second through hole (141) and a shielding part (142); The shielding part (142) is shielded above the second through hole (141), and the shielding part (142) is provided with an opening (142a) towards the outer peripheral direction of the oil-blocking end cover (100).

3. The oil retention end cover improving circulation of compressor oil according to claim 1 or 2, characterized in that, The oil-blocking end cover (100) further comprises a first surrounding plate (150) connected between the first baffle (110) and the second baffle (120).

4. The oil retention end cover that improves circulation of compressor oil according to claim 3, characterized by, The cross-sectional area of the first surrounding plate (150) gradually increases in a direction away from the first baffle (110).

5. A motor frame characterized by, The compressor comprises a frame body (200) and the oil-blocking end cover (100) according to any one of claims 1-4. A first connecting part (210) is formed on the outer side of the frame body (200), a second surrounding plate (160) is downwardly extended at the edge of the second baffle (120), and a second connecting part (161) for connecting with the first connecting part (210) is arranged on the second surrounding plate (160).

6. The motor frame of claim 5, wherein, The first connecting part (210) is a limiting hole, and the second connecting part (161) is a limiting block.

7. A compressor characterized by, The compressor comprises a rotor (300), a stator (400) and the motor frame according to claim 5 or 6. The rotor (300) is rotatably arranged on the inner side of the stator (400), and the frame body (200) is connected to the upper end of the stator (400). The oil-blocking end cover (100) covers the gap between the rotor (300) and the stator (400).

8. The compressor of claim 7, wherein, A plurality of flow-through grooves (410) extending in the radial direction are formed on the outer periphery of the stator (400), and the oil-blocking end cover (100) covers the flow-through grooves (410).

9. The compressor of claim 7, wherein, The compressor further comprises a shell (500). The stator (400) and the motor frame are arranged in the shell (500).

10. The compressor of claim 9, wherein, The outer diameter of the oil-blocking end cover (100) is less than the inner diameter of the shell (500) by 4-6 mm.

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