Stator, motor, compressor and shaping method

Abstract

The present invention provides a stator, a motor, a compressor and a shaping method, relating to the technical field of compressors, and solving the technical problems of high motor temperature and difficult heat dissipation. The stator includes a stator core and multi-slot enameled wires wound around the stator core. There are intervals between the enameled wires of each slot across the end of the stator core in the horizontal direction and / or the height direction, and there is an interval between all the enameled wires across the end of the stator core and the end face of the stator core; the motor includes the above-mentioned stator; the compressor includes the above-mentioned motor. The present invention is used to provide a novel end structure of the enameled wire at the end of the stator. The enameled wires in each slot are not concentrated and shaped at the end, but are dispersedly arranged with intervals therebetween, increasing the heat dissipation surface area, increasing the gas-liquid flow-through area, reducing the temperature of the enameled wire, contributing to the heat dissipation of the motor, and improving the performance of the motor.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and particularly to a stator, a motor, a compressor and a shaping method. Background Art

[0002] When a compressor is operating, its temperature is generally much higher than room temperature. Due to the internal thermal balance of the compressor, the motor inside the compressor will also have a relatively high temperature, and an overly high motor temperature will lead to reduced efficiency and deteriorated performance.

[0003] The motor stator is the stationary part of the motor. The stator consists of three parts: a stator core, a stator winding, and a frame. The stator core is formed by continuously stacking and pressing multiple silicon steel sheets. The stator core as a whole has an annular structure with a perforation in the center. On the silicon steel sheets at the edge of the perforation, sunken open slot grooves are provided. First, enameled wires are wound into a fully embedded formed winding. Secondly, the fully embedded formed winding is embedded into the open slot grooves of the motor stator by an embedding method.

[0004] The applicant of the present invention has found that there are at least the following technical problems in the prior art:

[0005] In the prior art, the enameled wires in each slot at the end of the stator core are intensively shaped at the end, and the enameled wires in each slot are tightly attached and connected to the end face of the stator core. This structure of the enameled wire ends has a small gas-liquid flow-through area, a small heat dissipation surface area, a high temperature of the enameled wires, and it is difficult for the motor to dissipate heat. Summary of the Invention

[0006] An object of the first aspect of the present invention is to provide a stator to solve the technical problems of high motor temperature and difficult heat dissipation existing in the prior art.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A stator provided by the present invention includes a stator core and multi-slot enameled wires wound around the stator core. There is a gap between the enameled wires in each slot across the end of the stator core in the horizontal direction and / or the height direction, and there is a gap between all the enameled wires across the end of the stator core and the end face of the stator core.

[0009] Based on the above technical solutions, the present invention can be further improved as follows.

[0010] As a further improvement of the present invention, all the enameled wires are layered across the end of the stator core.

[0011] As a further improvement of the present invention, the gaps of all the enameled wires in the same layer in the horizontal direction are the same or different.

[0012] As a further improvement of the present invention, the intervals between all the enameled wires in adjacent two layers are the same or different in the height direction.

[0013] As a further improvement of the present invention, each slot of the enameled wires located at the end of the stator core has an outwardly convex structure.

[0014] As a further improvement of the present invention, the convex structure is an arc arch.

[0015] As a further improvement of the present invention, the convex structure is a rectangular arch.

[0016] As a further improvement of the present invention, the convex structure is a triangle.

[0017] As a further improvement of the present invention, all the enameled wires located at the end of the stator core are dispersed into an arch-shaped mesh structure.

[0018] As a further improvement of the present invention, the enameled wires near the center position of the arch-shaped mesh structure are bent outward, so as to form a through-hole structure at the center of the arch-shaped mesh structure.

[0019] As a further improvement of the present invention, the specification of the through hole is smaller than the perforation specification of the stator core.

[0020] As a further improvement of the present invention, the through hole is circular, oval, square or strip-shaped.

[0021] As a further improvement of the present invention, the phase types of the enameled wires in the same layer are the same or different.

[0022] The beneficial effects of the present invention are as follows:

[0023] The present invention provides a novel end structure of enameled wires. The enameled wires in each slot are not concentrated and shaped at the end, but are dispersed and arranged with intervals therebetween, increasing the heat dissipation surface area, increasing the gas-liquid flow-through area, reducing the temperature of the enameled wires, contributing to the heat dissipation of the motor, and improving the performance of the motor.

[0024] In a further solution of the present invention, the enameled wires are arranged into a dispersed mesh structure, and this mesh structure can perform a certain separation on the gas-liquid. A large amount of refrigerant oil can adhere to the ends of the enameled wires, reducing the content of oil entering the system from the exhaust port and avoiding the influence of oil entering the system on the system performance.

[0025] The purpose of the second aspect of the present invention is to provide a motor to solve the technical problems of high temperature and difficult heat dissipation of the motor in the prior art.

[0026] To achieve the above purpose, the present invention provides the following technical solutions:

[0027] A motor provided by the present invention includes the stator.

[0028] The object of the third aspect of the present invention is to provide a compressor to solve the technical problems of high motor temperature and difficult heat dissipation in the prior art.

[0029] To achieve the above object, the present invention provides the following technical solutions:

[0030] A compressor provided by the present invention includes the motor.

[0031] As a further improvement of the present invention, it further includes a compressor housing, a pump body, and an exhaust pipe. The pump body is arranged inside the compressor housing, the motor is arranged between the pump body and the exhaust pipe, and the compressed gas is discharged through the pump body and then passes through the stator core and is discharged from the exhaust pipe.

[0032] The object of the fourth aspect of the present invention is to provide a shaping method to solve the technical problems of high motor temperature and difficult heat dissipation in the prior art.

[0033] To achieve the above object, the present invention provides the following technical solutions:

[0034] A shaping method for processing the stator provided by the present invention includes the following steps:

[0035] Step 100: The stator core is processed and formed;

[0036] Step 200: The enameled wire is embedded on the stator core;

[0037] Step 300: The enameled wire is shaped;

[0038] Step 400: The wire is tied and dipped in paint to fix the mesh shape of the enameled wire.

[0039] As a further improvement of the present invention, the shaping of the enameled wire in step 300 includes: 301 inserting a mandrel with a fixed shape into the non-lead end of the stator core; 302 the mandrel expands when it reaches the enameled wire at the lead end of the stator core; 303 the enameled wire forms the required wire bundle shape; 304 withdrawing the mandrel. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0041] Figure 1 It is a three-dimensional structural schematic diagram of the stator of the present invention;

[0042] Figure 2 is the front view of the stator of the present invention;

[0043] Figure 3 is the top view of an embodiment of the end part of the stator of the present invention;

[0044] Figure 4 is the top view of the second embodiment of the end part of the stator of the present invention;

[0045] Figure 5 is the top view of the third embodiment of the end part of the stator of the present invention;

[0046] Figure 6 is the sectional view of the compressor of the present invention;

[0047] Figure 7 is the process flow chart of the shaping method of the present invention.

[0048] In the figure: 1, stator core; 2, enameled wire; 3, compressor housing; 4, pump body; 5, exhaust pipe; 6, end part. Specific embodiments

[0049] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only a part rather than all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope protected by the present invention.

[0050] As Figure 1 and Figure 2 shown, the present invention provides a stator on a motor, including a stator core 1 and a multi-slot enameled wire 2 wound around the stator core 1. The stator core 1 has a perforation in the center, and a plurality of open slot grooves are arranged along the circumference on the stator core 1 beside the perforation. The enameled wire 2 is wound in the slot grooves. After the enameled wire 2 passes through the lead-out wire end of the stator core from one slot groove, it is shaped and bent, then crosses the central perforation and penetrates into another slot groove. The structures of the stator core 1 and the enameled wire 2 are made by using the products and methods in the prior art; in the present invention, in order to reduce the temperature of the motor and improve the heat dissipation effect, there is a gap between each enameled wire 2 across the end part 6 of the stator core 1 in the horizontal direction and / or the height direction, and there is a gap between all the enameled wires 2 across the end part 6 of the stator core 1 and the end face of the stator core 1. That is, there is a gap between two adjacent enameled wires 2 in the height direction and a gap in the horizontal direction, and this gap forms a passage for gas-liquid flow, thereby increasing the gas-liquid flow area at the end part of the stator core 1.

[0051] The present invention provides a novel enameled wire end structure at the stator end. The enameled wires in each slot are not concentrated and shaped at the end 6, but are dispersed and spaced apart. This increases the heat dissipation surface area, increases the gas-liquid flow area, reduces the enameled wire temperature, helps dissipate heat from the motor, and improves motor performance.

[0052] like Figure 3 and Figure 5 As shown, as an optional embodiment, all enameled wires 2 are arranged in layers across the end 6 of the stator core 1. When the motor is a single-phase motor, the enameled wires 2 can be arranged in one layer; when the motor is a two-phase motor, the enameled wires 2 can be arranged in two layers; when the motor is a three-phase motor, the enameled wires 2 can be arranged in three layers;

[0053] Specifically, the intervals between all the enameled wires 2 in the same layer in the horizontal direction are the same or different.

[0054] Specifically, the intervals between all the enameled wires 2 in two adjacent layers in the height direction are the same or different.

[0055] Specifically, the enameled wire 2 in each slot at the end 6 of the stator core 1 is in an outwardly protruding structure.

[0056] In an optional implementation manner, the raised structure is an arc-shaped arch structure.

[0057] In another optional embodiment, the raised structure is a rectangular arch structure.

[0058] In a third optional implementation manner, the raised structure is a triangle.

[0059] Furthermore, all the enameled wires 2 at the end 6 of the stator core 1 are dispersed into an arched mesh structure. Other shapes of through holes across the stator core can also be provided.

[0060] like Figure 4 As shown, further, the enameled wire 2 near the center of the arched mesh structure is bent outwards, so that a through hole structure is formed in the center of the arched mesh structure. The specification of the through hole is smaller than the perforation specification of the stator core 1.

[0061] It should be noted that the through hole is circular, oval, square or bar-shaped.

[0062] Specifically, the enameled wires 2 located in the same layer may have the same or different phase types. When the motor is a two-phase or three-phase motor, the enameled wires 2 serving as the main phase and the auxiliary phase may be arranged in different layers or in the same layer. For example, the enameled wires 2 of the main phase may be bundled as a whole in the upper layer, while the enameled wires 2 of the auxiliary phase may be bundled as a whole in the lower layer. Alternatively, the main phase may be bundled in the lower layer and the auxiliary phase in the upper layer depending on the actual situation. Of course, the main and auxiliary phase bundles may also be arranged to intersperse and interweave to form a mesh structure.

[0063] In a further embodiment of the present invention, the enameled wire 2 is arranged in a dispersed network structure, which can separate gas and liquid to a certain extent. A large amount of refrigerant oil can adhere to the end of the enameled wire, reducing the content of oil entering the system from the exhaust port and preventing oil from entering the system and affecting the system performance.

[0064] A motor provided by the present invention includes the above-mentioned stator.

[0065] As Figure 6 shown, a compressor provided by the present invention includes the above-mentioned motor, and further includes a compressor housing 3, a pump body 4, and an exhaust pipe 5. The pump body 4 is arranged inside the compressor housing 3, and the motor is arranged between the pump body 4 and the exhaust pipe 5. The compressed gas is discharged through the pump body 4, passes through the stator core 1, and then is discharged from the exhaust pipe 5. Specifically, the compressed gas is discharged from the pump body 4, enters the perforation of the stator core 1, and then is discharged from the exhaust pipe 5.

[0066] A shaping method for processing a stator provided by the present invention includes the following steps: As Figure 7 shown, step 100: The stator core is processed and formed;

[0067] Step 200: The enameled wire is embedded on the stator core;

[0068] Step 300: The enameled wire is shaped;

[0069] Step 400: The wire is tied and impregnated with paint to fix the network shape of the enameled wire.

[0070] Among them, the shaping of the enameled wire in step 300 includes: 301 A mandrel with a fixed shape is inserted into the non-lead end of the stator core; 302 The mandrel expands when it reaches the enameled wire at the lead end of the stator core; 303 The enameled wire forms the required wire coil shape; 304 The mandrel is withdrawn.

[0071] Here, it should be noted first that "inward" is the direction towards the center of the accommodation space, and "outward" is the direction away from the center of the accommodation space.

[0072] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the Figure 1 orientation or positional relationship shown, and are only for the convenience of describing the present invention 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 invention.

[0073] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0074] In the present invention, unless otherwise clearly defined and limited, terms such as "mounted", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0075] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0076] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0077] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claimed rights.

Claims

1. A stator, comprising a stator core and a multi-slot enameled wire wound around the stator core, characterized in that There is a gap between each slot of the enameled wires across the end of the stator core in the horizontal direction and / or the height direction; There is a gap between all the enameled wires across the end of the stator core and the end face of the stator core; this gap allows gas-liquid flow, thereby increasing the gas-liquid flow area at the end of the stator core; All the enameled wires are layered across the end of the stator core. The gaps between all the enameled wires in the same layer are the same or different in the horizontal direction, and the gaps between all the enameled wires in adjacent layers are the same or different in the height direction.

2. The stator according to claim 1, wherein, Each slot of the enameled wires located at the end of the stator core has an outwardly convex structure.

3. The stator according to claim 2, characterized in that, The convex structure is an arc arch or a rectangular arch.

4. The stator according to claim 2 or 3, characterized in that, All the enameled wires located at the end of the stator core are dispersed into an arch-shaped mesh structure.

5. The stator according to claim 4, characterized in that, The enameled wires near the center position of the arch-shaped mesh structure are bent outward, forming a through-hole structure at the center of the arch-shaped mesh structure.

6. The stator according to claim 5, wherein The specification of the through-hole is smaller than the perforation specification of the stator core.

7. The stator according to claim 1, characterized in that, The phase types of the enameled wires in the same layer are the same or different.

8. A motor, characterized in that, It includes a stator as described in any one of claims 1-7.

9. A compressor, characterized in that, It includes a motor as described in claim 8.

10. The compressor according to claim 9, characterized in that, It further includes a compressor housing, a pump body, and an exhaust pipe. The pump body is arranged inside the compressor housing. The motor is arranged between the pump body and the exhaust pipe. The compressed gas is discharged through the pump body and then passes through the stator core and is discharged from the exhaust pipe.

11. A shaping method for processing a stator as described in any one of claims 1-7, characterized in that, It includes the following steps: Step 100: The stator core is processed and formed; Step 200: The enameled wires are inserted into the stator core; Step 300: The enameled wires are shaped; Step 400: The wires are tied and impregnated with paint to fix the mesh shape of the enameled wires.

12. The shaping method according to claim 11, characterized in that, The shaping of the enameled wires in step 300 includes: 301 Insert a mandrel with a fixed shape from the non-lead end of the stator core; 302 The mandrel expands when it reaches the enameled wires at the lead end of the stator core; 303 The enameled wires form the required wire bundle shape; 304 Withdraw the mandrel.

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