Plug connector for improving oil circulation and motor assembly

Abstract

The utility model relates to the technical field of compressors, and discloses a plug connector for improving oil circulation and a motor assembly, the plug connector comprises a first plug-in unit and a second plug-in unit, the first plug-in unit and the second plug-in unit are oppositely plugged at the upper end or the lower end of a stator core to form an annular structure surrounding the periphery of the stator core, and the first plug-in unit and the second plug-in unit are connected with each other. The first plug-in and the second plug-in are respectively connected with at least one blocking structure, the blocking structures are used for blocking refrigerants and refrigerating machine oil flowing through a stator circulation hole, and drainage holes are formed between the first plug-in and the blocking structures and between the second plug-in and the blocking structures; the utility model has the following technical effects: 1, the oil circulation rate of the compressor is improved; and 2, the stator core is effectively lubricated, heat is fully dissipated, and the overall performance of the compressor is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of compressors, and in particular relates to a plug-in connector and a motor component for improving oil circulation. Background Art

[0002] At present, in order to improve the energy efficiency of the compressor when designing and manufacturing rotary fixed-speed compressors, it is necessary to increase the refrigerant flow area of ​​the motor part. The most direct and effective way is to set refrigerant flow holes in the rotor and stator. When the compressor is running, the mixture of refrigerant and refrigeration oil comes out of the pump body, passes through the gap between the motor stator and rotor, and the channel of the refrigerant flow holes of the stator and rotor to reach the upper part of the compressor and enter the air conditioning system through the compressor exhaust pipe. Part of the refrigerant oil will accumulate in the pipeline of the air conditioning system, causing pipeline blockage, reflux difficulties, low heat transfer efficiency, poor motor cooling and other problems.

[0003] In order to solve the above problems, an oil retaining device is usually installed on the top of the rotor of the fixed-speed compressor to prevent excessive refrigeration oil from entering the air-conditioning system from the inside of the compressor, so as to improve the oil circulation rate. This is the technology used when the fixed-speed compressor uses a copper wire motor. When an aluminum wire motor is used, the oil circulation rate is obviously insufficient, which affects the energy efficiency of the compressor. In addition, the aluminum wire motor has the characteristic of heating faster than the copper wire motor, and its heat cannot be fully dissipated, which affects the overall performance of the compressor. Utility Model Content

[0004] In order to address the deficiencies of the prior art, the utility model provides a connector and a motor assembly for improving oil circulation, thereby improving the oil circulation rate of the compressor, ensuring that the stator core is effectively lubricated, heat is fully dissipated, and improving the overall performance of the compressor.

[0005] The technical purpose to be achieved by the utility model is achieved through the following technical solutions:

[0006] The utility model provides a plug-in component for improving oil circulation, the plug-in component comprises a first plug-in component and a second plug-in component, the first plug-in component and the second plug-in component are relatively plugged into the upper end or the lower end of the stator core to form an annular structure surrounding the outer periphery of the stator core;

[0007] At least one blocking structure is connected to each of the first plug-in and the second plug-in, and the blocking structure is used to block the refrigerant and refrigeration oil flowing through the stator flow hole;

[0008] Drainage holes are formed between the first plug-in and the blocking structure, and between the second plug-in and the blocking structure.

[0009] In some implementations, the blocking structure includes a blocking edge and connecting edges connected to both ends of the blocking edge, the blocking edge is distributed along the circumference of the connector, and the connecting edge is used to connect the blocking edge with the first plug-in and the second plug-in;

[0010] The drainage holes are formed between the blocking edge, the connecting edge and the first plug-in, and between the blocking edge, the connecting edge and the second plug-in, so as to achieve a blocking effect on the refrigerant and the refrigeration oil, change the flow path, improve oil circulation and enhance performance.

[0011] In some implementations, the width of the blocking edge protruding in the first direction covers the width of the stator circulation hole protruding in the first direction, and the first direction is a direction away from the axis of the stator core, ensuring that it can play a good blocking role on the refrigerant and refrigeration oil flowing through the stator circulation hole.

[0012] In some implementations, a connecting portion is formed on the end of the first plug-in close to the second plug-in, and a connecting groove is formed on the second plug-in at a position corresponding to the connecting portion. With the help of the matching relationship between the connecting portion and the connecting groove, the first plug-in and the second plug-in can be easily plugged together, thereby improving the convenience and stability of assembly.

[0013] In some implementations, at least one clamping structure is formed on the first plug-in or the second plug-in, and the clamping structure is used to clamp on the stator teeth of the stator core to improve the installation stability of the connector.

[0014] In some implementations, the clamping structure includes a first clamping member and a second clamping member that are arranged opposite to each other, and the first clamping member and the second clamping member are elastic, so that the connector is adaptable to stator cores of various sizes, thereby improving versatility.

[0015] In some implementations, the connector is made of insulating material to avoid short circuits and other effects, thereby ensuring the normal operation of the compressor.

[0016] The utility model also provides a motor assembly, comprising a stator core and any one of the above-mentioned connectors;

[0017] The outer side of the stator core is provided with stator flow holes at intervals in the circumferential direction. The connector is plugged into the upper end or the lower end of the stator core. The connector is applied to the motor assembly to improve oil circulation, change the return path of the refrigeration oil, and improve the overall performance of the compressor.

[0018] In some implementations, a motor housing is further included, and the motor housing is sleeved on the outside of the stator core and the connector. Under the blocking action of the motor housing and the blocking structure in different directions, the refrigerant and refrigeration 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 connector are in close contact with the motor housing, thereby reducing the amount of refrigeration oil discharged through the exhaust pipe and improving oil circulation.

[0020] In summary, the utility model has at least the following benefits:

[0021] 1. The plug-in component for improving oil circulation provided by the utility model comprises a first plug-in component and a second plug-in component which are plugged and connected to each other at the upper end or the lower end of the stator core, a blocking structure for blocking the refrigerant and refrigeration oil flowing through the stator flow hole is connected to the first plug-in component and the second plug-in component, and a drainage hole is formed. With the blocking effect of the blocking structure and the guiding effect of the drainage hole, the flow direction of the refrigerant and the refrigeration oil is changed, the refrigeration oil is prevented from entering the air-conditioning system, and the oil circulation rate of the compressor is effectively improved.

[0022] 2. The motor assembly provided by the utility model, after applying the plug-in component, changes the flow path of the refrigeration oil and flows back through the stator core, so that the stator core is effectively lubricated and the heat is fully dissipated, effectively improving the overall performance of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic structural diagram of a plug connector according to Embodiment 1 of the present utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the first plug-in of Embodiment 2 of the present utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the second plug-in of Embodiment 2 of the present utility model;

[0026] Figure 4 This is a schematic diagram of the structure of the motor assembly of Embodiment 3 of the present utility model;

[0027] Figure 5 This is a schematic structural diagram of a connector and a stator core according to Embodiment 3 of the present utility model;

[0028] 100, plug-in connector; 110, first plug-in connector; 111, connecting portion; 120, second plug-in connector; 121, connecting groove; 130, blocking structure; 131, blocking edge; 132, connecting edge; 140, drainage hole; 150, clamping structure; 151, first clamping member; 152, second clamping member;

[0029] 200, stator core; 210, stator flow hole;

[0030] 300. Motor housing. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. The described implementation is a part of the implementation of the utility model, not all of the implementations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0033] Embodiment 1:

[0034] See also Figure 1 A connector for improving oil circulation, which is used to be plugged into the upper or lower end of the stator core and has a separate structure with the stator core.

[0035] The plug-in connector 100 includes a first plug-in connector 110 and a second plug-in connector 120 . The first plug-in connector 110 and the second plug-in connector 120 are relatively plugged into the upper end or the lower end of the stator core to form an annular structure surrounding the outer circumference of the stator core.

[0036] It can be known that the stator core is usually a hollow cylindrical structure, whose upper and lower end faces are annular surfaces and whose outer circumference is a curved surface. Specifically, the first plug-in 110 and the second plug-in 120 can be relatively inserted into the upper end or lower end of the outer circumference of the stator core, or relatively inserted into the upper end face or lower end face of the stator core to establish a connection relationship with the stator core, and this embodiment does not limit this.

[0037] The first plug-in 110 and the second plug-in 120 are plugged together to form an annular structure, that is, the connector 100 is an annular structure. The connector 100 with an annular structure is adapted to the outer shape of the stator core and is also convenient for production and processing of the connector 100. Of course, the connector 100 can also be designed as a polygonal structure, and the embodiment does not limit this.

[0038] At least one blocking structure 130 is connected to each of the first plug-in 110 and the second plug-in 120 . The blocking structure 130 is used to block the refrigerant and refrigeration oil flowing through the stator flow hole.

[0039] It can be known that the stator core includes a plurality of stator teeth distributed in a ring shape, each stator tooth extends along the axial direction of the stator core, and stator flow holes are distributed circumferentially at intervals on the outer side of the stator core. The first plug-in 110 and the second plug-in 120 are relatively inserted into the upper end or the lower end of the stator core, so that the blocking structure 130 on the first plug-in 110 and the second plug-in 120 corresponds to the position of the stator flow hole, so as to block the refrigerant and refrigeration oil flowing through the stator flow hole.

[0040] Specifically, a blocking structure 130 is connected to each of the first plug-in 110 and the second plug-in 120, that is, two blocking structures 130 are designed on the connector 100, and the two blocking structures 130 can be distributed along the circumference of the first plug-in 110 and the second plug-in 120, respectively, so that the two blocking structures 130 are also formed into an annular structure, thereby being able to cover all stator flow holes located on the outer circumference of the stator core. Of course, the number of blocking structures 130 and the circumferential extension length around the first plug-in 110 and the second plug-in 120 can also be adjusted according to actual design requirements to meet different requirements.

[0041] A drainage hole 140 is formed between the first plug-in 110 and the blocking structure 130 and between the second plug-in 120 and the blocking structure 130. When the refrigerant and refrigeration oil flowing through the stator flow hole are blocked by the blocking structure 130, they are guided by the drainage hole 140 and their return path passes through the drainage hole 140, thereby entering the inner wall of the stator core.

[0042] In 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 outlet and enters the air conditioning system to complete the refrigeration. In the actual operation of the compressor, the refrigerant will carry the refrigeration oil mist and be discharged from the outlet in the form of a gas-liquid mixture and enter the air conditioning system, so that part of the refrigeration oil adheres to the system and cannot participate in the circulation, resulting in a reduction of the refrigeration oil in the compressor, which is easy to cause power increase and affect performance.

[0043] Based on this, the connector provided in this embodiment relatively inserts the first plug-in 110 and the second plug-in 120 on the outer periphery of the stator core, and blocks the refrigerant and refrigeration oil flowing through the stator flow hole through the blocking structure 130, so that the refrigerant and the refrigeration oil change their flow paths under the blocking effect of the blocking structure 130 and pass through the drainage hole 140. After the refrigerant is discharged from the drainage hole 140, it can go up along the inner wall of the stator core, while the refrigeration oil is affected by its own gravity. After passing through the drainage hole 140, the refrigeration oil flows downward along the inner wall of the stator core. This process can achieve a certain degree of gas-liquid separation, reduce the discharge of refrigeration oil from the exhaust pipe, and promote oil circulation. At the same time, the refrigeration oil refrigeration backflow can fully take away the heat of the stator core, thereby reducing power consumption and improving overall performance.

[0044] In some embodiments, the blocking structure 130 includes a blocking edge 131 and a connecting edge 132 connected to both ends of the blocking edge 131, the blocking edge 131 is distributed along the circumference of the connector 100, and the connecting edge 132 is used to connect the blocking edge 131 with the first plug-in 110 and the second plug-in 120.

[0045] The drainage hole 140 is formed between the blocking edge 131, the connecting edge 132 and the first plug-in 110, and between the blocking edge 131, the connecting edge 132 and the second plug-in 120. Through the joint action of the blocking edge 131 and the drainage hole 140, the refrigerant and the refrigeration oil are blocked, the flow path is changed, the oil circulation is improved and the performance is improved.

[0046] In some embodiments, the width of the blocking edge 131 protruding along the first direction covers the width of the stator circulation hole protruding along the first direction, and the first direction is the direction away from the axis of the stator core, ensuring that it can play a good blocking role on the refrigerant and refrigeration oil flowing through the stator circulation hole.

[0047] The utility model provides a plug-in component for improving oil circulation, comprising a first plug-in component 110 and a second plug-in component 120 which are plugged and connected to each other at the upper end or the lower end of the stator core, a blocking structure 130 for blocking the refrigerant and refrigeration oil flowing through the stator flow hole is connected to the first plug-in component 110 and the second plug-in component 120, and a drainage hole 140 is formed. With the blocking effect of the blocking structure 130 and the guiding effect of the drainage hole 140, the flow direction of the refrigerant and the refrigeration oil is changed, the refrigeration oil is prevented from entering the air-conditioning system, and the oil circulation rate of the compressor is effectively improved.

[0048] Embodiment 2:

[0049] The difference between this embodiment and embodiment 1 is that this embodiment further optimizes the structure of the plug connector 100 of the utility model, see Figure 2 and Figure 3 .

[0050] A connecting portion 111 is formed on the end of the first plug-in 110 close to the second plug-in 120, and a connecting groove 121 is opened on the second plug-in 120 at a position corresponding to the connecting portion 111. With the help of the matching relationship between the connecting portion 111 and the connecting groove 121, the first plug-in 110 and the second plug-in 120 can be easily plugged and connected, thereby improving the convenience and stability of assembly.

[0051] For example, the first plug-in 110 and the second plug-in 120 are semi-annular structures, and the first plug-in 110 and the second plug-in 120 both include two ends. A connecting portion 111 is formed on the two ends of the first plug-in 110, and the connecting portion 111 can be a structure such as a snap that can play a snap-fitting role. Correspondingly, a connecting groove 121 is formed on the two ends of the second plug-in 120, and the connecting groove 121 can be used to snap into the groove wall of the connecting groove 121 after the snap is inserted, so as to realize the plug-in connection relationship between the first plug-in 110 and the second plug-in 120, which is convenient for assembling and fixing the first plug-in 110 and the second plug-in 120, and is also convenient for disassembly.

[0052] In some embodiments, at least one clamping structure 150 is formed on the first plug-in 110 or the second plug-in 120 , and the clamping structure 150 is used to clamp on the stator teeth of the stator core to improve the installation stability of the connector 100 .

[0053] A clamping structure 150 is formed on the first plug-in 110 near the inner middle portion of the second plug-in 120. Similarly, a clamping structure 150 is also formed on the second plug-in 120 near the inner middle portion of the first plug-in 110. With the help of these two clamping structures 150, the force uniformity of the connector 100 and the connection stability with the stator core can be improved.

[0054] Specifically, the clamping structure 150 includes a first clamping member 151 and a second clamping member 152 that are arranged opposite to each other. The first clamping member 151 and the second clamping member 152 are elastic, so that the connector 100 is adaptable to stator cores of various sizes, thereby improving versatility.

[0055] It can be understood that the distance between the first clamping member 151 and the second clamping member 152 is slightly smaller than the width of the stator teeth of the stator core, so that the first clamping member 151 and the second clamping member 152 can be clamped on the stator teeth without loosening. Since the first clamping member 151 and the second clamping member 152 are both elastic, the first clamping member 151 and the second clamping member 152 can be clamped on the stator teeth of stator cores of various sizes within the elastic range of the first clamping member 151 and the second clamping member 152.

[0056] Furthermore, the connector 100 is made of insulating material, such as resin or other materials. The connector 100 made of such materials is applied to the stator core, which can avoid the influence of short circuit and the like and ensure the normal operation of the compressor.

[0057] Embodiment 3:

[0058] This embodiment provides a motor assembly based on the above embodiment. Figure 4 and Figure 5 .

[0059] A motor assembly includes a stator core 200 and a connector 100 in any one of the above embodiments.

[0060] Stator flow holes 210 are distributed at intervals on the outer side of the stator core 200 in the circumferential direction. The connector 100 is plugged into the upper end or the lower end of the stator core 200. The connector 100 is applied to the motor assembly to improve oil circulation, change the return path of the refrigeration oil, and improve the overall performance of the compressor.

[0061] Specifically, a blocking structure 130 is connected to each of the first plug-in 110 and the second plug-in 120, that is, two blocking structures 130 are designed on the connector 100, and the two blocking structures 130 can be distributed along the outer circumference of the first plug-in 110 and the second plug-in 120, respectively, so that the two blocking structures 130 are also formed into an annular structure, thereby being able to cover all stator flow holes 210 located on the outer circumference of the stator core 200. Of course, the number of blocking structures 130 and the circumferential extension length around the first plug-in 110 and the second plug-in 120 can also be adjusted according to actual design requirements to meet different requirements.

[0062] Drainage holes 140 are formed between the first plug-in 110 and the blocking structure 130 and between the second plug-in 120 and the blocking structure 130. When the refrigerant and refrigeration oil flowing through the stator flow hole 210 are blocked by the blocking structure 130, they are guided by the drainage holes 140 and their return paths pass through the drainage holes 140, thereby entering the inner wall of the stator core 200.

[0063] In some embodiments, the motor assembly also includes a motor housing 300, which is sleeved on the outside of the stator core 200 and the connector 100. Under the blocking action of the motor housing 300 and the blocking structure 130 in different directions, it is ensured that the refrigerant and refrigeration oil can only be discharged through the stator circulation hole 210. The refrigerant and refrigeration oil flowing through the stator circulation hole 210 can change the path and pass through the drainage hole 140.

[0064] Furthermore, the stator core 200 and the connector 100 are in close contact with the motor housing 300, preventing the refrigerant and the refrigeration oil from overflowing in the circumference of the stator circulation hole 210, and ensuring that the refrigerant and the refrigeration oil can only be discharged through the drainage hole 140, thereby reducing the discharge amount of the refrigeration oil through the exhaust pipe and improving the oil circulation.

[0065] The motor assembly provided by the utility model changes the flow path of the refrigeration oil after the connector is applied, and flows back through the stator core, so that the stator core is effectively lubricated and the heat is fully dissipated, thereby effectively improving the overall performance of the compressor.

[0066] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0067] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0068] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0069] In the present utility model, unless otherwise clearly specified and limited, 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 another feature between them. Moreover, the first feature being above, above, and above the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being below, below, and below the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0070] Although the utility model is described in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and changes based on the above content. Therefore, all such substitutions, improvements and changes are included in the spirit and scope of the appended claims.

Claims

1. A connector for improving oil circulation, characterized in that: The plug-in connector (100) comprises a first plug-in connector (110) and a second plug-in connector (120), wherein the first plug-in connector (110) and the second plug-in connector (120) are relatively plugged into the upper end or the lower end of the stator core to form an annular structure surrounding the outer periphery of the stator core; At least one blocking structure (130) is connected to each of the first plug-in (110) and the second plug-in (120), and the blocking structure (130) is used to block the refrigerant and refrigeration oil flowing through the stator flow hole; Drainage holes (140) are formed between the first plug-in (110) and the blocking structure (130), and between the second plug-in (120) and the blocking structure (130).

2. The connector for improving oil circulation according to claim 1, characterized in that: The blocking structure (130) comprises a blocking edge (131) and connecting edges (132) connected to both ends of the blocking edge (131), the blocking edge (131) being distributed along the circumference of the connector (100), and the connecting edge (132) being used to connect the blocking edge (131) with the first plug-in (110) and the second plug-in (120); The drainage hole (140) is formed between the blocking edge (131), the connecting edge (132) and the first plug-in (110), and between the blocking edge (131), the connecting edge (132) and the second plug-in (120).

3. The connector for improving oil circulation according to claim 2, characterized in that: The width of the blocking edge (131) protruding along the first direction covers the width of the stator circulation hole protruding along the first direction, and the first direction is a direction away from the axis of the stator core.

4. The connector for improving oil circulation according to claim 1, characterized in that: A connecting portion (111) is formed on the end of the first plug-in unit (110) close to the second plug-in unit (120), and a connecting groove (121) is formed on the second plug-in unit (120) at a position corresponding to the connecting portion (111).

5. The connector for improving oil circulation according to claim 1, characterized in that: At least one clamping structure (150) is formed on the first plug-in unit (110) or the second plug-in unit (120), and the clamping structure (150) is used to be clamped on a stator tooth of a stator core.

6. The connector for improving oil circulation according to claim 5, characterized in that: The clamping structure (150) comprises a first clamping member (151) and a second clamping member (152) which are arranged opposite to each other, and the first clamping member (151) and the second clamping member (152) are elastic.

7. The plug connector for improving oil circulation according to any one of claims 1 to 6, characterized in that: The plug connector (100) is made of insulating material.

8. A motor assembly, characterized in that: It comprises a stator core (200) and a connector (100) according to any one of claims 1 to 7; Stator flow holes (210) are distributed at intervals in the circumferential direction on the outer side of the stator core (200), and the plug-in component (100) is plugged into the upper end or the lower end of the stator core (200).

9. The motor assembly according to claim 8, characterized in that It also includes a motor housing (300), wherein the motor housing (300) is sleeved on the outside of the stator core (200) and the connector (100).

10. The motor assembly according to claim 9, characterized in that The stator core (200) and the connector (100) are both in close contact with the motor housing (300).

Images