Stator structure and compressor having the same

Abstract

This invention provides a stator structure and a compressor having the same. The stator structure is installed inside the compressor housing and includes: a stator body with a connecting surface for connection to the housing; and a protruding structure disposed on the connecting surface. At least a portion of the protruding structure protrudes from the connecting surface toward the housing until it penetrates the housing, thereby connecting to the compressor housing via the protruding structure. This invention solves the problem in the prior art where the stator slot insulation of the compressor is easily damaged during welding, leading to potential electrical safety hazards in the compressor.

Description

Technical Field

[0001] This invention relates to the field of compressor technology, and more specifically, to a stator structure and a compressor having the same. Background Technology

[0002] The compressor housing and motor stator have always used the thermal interference fit assembly method. Thermal interference fit means that the outer diameter of the stator is larger than the inner diameter of the housing. The housing is expanded by heating, and then the stator is installed into the housing. After the housing cools down, the stator is fixed in the housing. This assembly method will cause the stator core to deform under stress, resulting in stress and increased iron loss of the motor.

[0003] In order to solve the above-mentioned technical problems, the existing technology adopts an interference fit or clearance fit between the compressor housing and the stator, and the housing and the stator are fixed by welding.

[0004] However, the welding method directly welds the weld points between the outer surface of the stator core and the shell, which requires high control of the welding process. Overheating during the welding process can easily cause the stator slot insulation to overheat and burn, and the motor slot insulation is prone to damage, affecting electrical safety. Summary of the Invention

[0005] The main objective of this invention is to provide a stator structure and a compressor having the same, so as to solve the problem that the stator slot insulation of the compressor in the prior art is easily damaged during the welding process, which leads to potential electrical safety hazards in the compressor.

[0006] To achieve the above objectives, according to one aspect of the present invention, a stator structure is provided, which is installed inside the housing of a compressor. The stator structure includes: a stator body having a connecting surface for connecting with the housing; and a protruding structure disposed on the connecting surface, at least a portion of which protrudes from the connecting surface toward the housing until it passes through the housing, so as to connect with the housing of the compressor via the protruding structure.

[0007] Furthermore, there are multiple connecting surfaces, which are spaced apart circumferentially along the stator body; there are also multiple protruding structures, which are arranged one-to-one with the multiple connecting surfaces.

[0008] Furthermore, the protruding structure includes a protruding block, which is connected to the shell and has a longitudinal section with a plane parallel to the connecting surface. The longitudinal section of the protruding block is a polygon; or the longitudinal section of the protruding block is a quadrilateral.

[0009] Furthermore, the protruding structure includes a protruding block, which is connected to the shell and has a longitudinal section with a plane parallel to the connecting surface. The longitudinal section of the protruding block is circular or elliptical.

[0010] Furthermore, each connecting surface is provided with multiple protrusions, which are spaced apart along the axial direction of the stator body.

[0011] According to another aspect of the present invention, a compressor is provided, comprising a housing and a stator structure, the stator structure being installed inside the housing and connected to the housing, the stator structure being the stator structure described above.

[0012] Furthermore, the housing is provided with a clearance portion, which is opposite to the protruding structure of the stator structure, so as to avoid the protruding structure by passing through the clearance portion.

[0013] Furthermore, the clearance portion is a clearance hole, and at least part of the protruding structure passes through the clearance hole.

[0014] Further, the housing includes: a first housing; a second housing connected to the first housing to form a mounting cavity for mounting a stator structure between the first housing and the second housing; and a clearance portion disposed on the first housing and / or the second housing.

[0015] Furthermore, a first notch is provided on the first housing, and a second notch is provided on the second housing opposite to the first notch, so as to form a clearance portion between the first notch and the second notch.

[0016] The stator structure installed within the compressor housing using the technical solution of this invention includes a stator body and a protruding structure. The stator body has a connecting surface for connection with the housing. The protruding structure is disposed on the connecting surface, with at least a portion protruding from the connecting surface towards the housing until it penetrates the housing, thus connecting to the compressor housing via the protruding structure. This arrangement reduces the contact area between the stator body and the housing. The protruding structure directly forms the welding point between the housing and the stator body, buffering the heat generated during welding and preventing direct heat transfer to the slots on the stator body. This reduces heat damage to the stator core slot insulation and lowers electrical safety risks. Furthermore, placing the protruding structure on the connecting surface also avoids interference with the magnetic circuit of the motor yoke. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0018] Figure 1 A schematic diagram of an embodiment of the stator structure according to the present invention is shown;

[0019] Figure 2 A cross-sectional schematic diagram of the stator structure according to the present invention is shown;

[0020] Figure 3An exploded view of the compressor and stator assembly according to the present invention is shown;

[0021] Figure 4 A schematic diagram of the structure of the first housing of the compressor according to the present invention is shown;

[0022] Figure 5 A schematic diagram of the structure of the second housing of the compressor according to the present invention is shown;

[0023] Figure 6 A schematic diagram of the structure of a first embodiment of a compressor according to the present invention is shown;

[0024] Figure 7 A schematic diagram of a second embodiment of a compressor according to the present invention is shown;

[0025] Figure 8 A schematic diagram of a third embodiment of a compressor according to the present invention is shown;

[0026] Figure 9 A cross-sectional view of a first embodiment of a compressor according to the present invention is shown;

[0027] Figure 10 A cross-sectional view of a second embodiment of the compressor according to the present invention is shown;

[0028] Figure 11 A cross-sectional view of a third embodiment of the compressor according to the present invention is shown.

[0029] The above figures include the following reference numerals:

[0030] 100. Housing; 1. Stator body; 10. Connecting surface; 2. Protruding structure; 20. Protruding block; 101. Clearance part; 1010. Clearance hole; 102. First housing; 103. Second housing; 200. Mounting cavity; 1020. First notch; 1030. Second notch. Detailed Implementation

[0031] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0033] This invention provides a stator structure, please refer to... Figures 1 to 3 The stator structure, which is installed inside the housing 100 of the compressor, includes: a stator body 1, on which a connecting surface 10 is provided for connecting with the housing 100; and a protruding structure 2, which is provided on the connecting surface 10, at least a portion of which protrudes from the connecting surface 10 toward the housing 100 until it passes through the housing 100, so as to connect with the housing 100 of the compressor through the protruding structure 2.

[0034] The stator structure installed in the housing 100 of a compressor according to the present invention includes a stator body 1 and a protruding structure 2. The stator body 1 is provided with a connecting surface 10 for connecting to the housing 100. The protruding structure 2 is provided on the connecting surface 10, and at least a portion of the protruding structure 2 protrudes from the connecting surface 10 toward the housing 100 until it passes through the housing 100, so as to connect with the compressor housing 100 through the protruding structure 2. This arrangement reduces the contact area between the stator body 1 and the housing 100. The protruding structure 2 is directly at the welding point between the housing 100 and the stator body 1. The protruding structure buffers the heat generated during welding, preventing the heat from being directly transferred to the slots on the stator body 1, reducing the damage of heat to the insulation of the stator core slots, and reducing electrical safety risks. At the same time, placing the protruding structure 2 on the connecting surface 10 also avoids the influence on the magnetic circuit of the motor yoke.

[0035] Specifically, there are multiple connecting surfaces 10, which are spaced apart circumferentially along the stator body 1; there are also multiple protruding structures 2, which are arranged one-to-one with the multiple connecting surfaces 10. The stator body 1 also has multiple through slots located between adjacent connecting surfaces 10, forming gaps between the through slots and the housing 100 for refrigerant flow. These through slots are connected to the housing 100 via the multiple protruding structures 2 to ensure the stability of the connection between the stator body 1 and the housing 100.

[0036] In another embodiment of the present invention, at least two of the multiple connecting surfaces 10 are provided with protruding structures 2, which can simplify the processing of the stator body 1 and prevent the heat generated during welding from being transferred to the grooves on the stator body.

[0037] In practical implementation, the protruding structure 2 includes a protruding block 20, which is connected to the housing 100. The longitudinal section of the protruding block 20 is a polygon, or a quadrilateral, with a plane parallel to the connecting surface 10 as its longitudinal cross-section. This arrangement facilitates accurate positioning of the welding points by the operator, improving welding precision. Specifically, the protruding block 20 is positioned at the center, upper part, or lower part along the axial direction of the connecting surface 10 to coordinate with the housing 100 for adjusting the welding points.

[0038] In another embodiment of the present invention, the protruding structure 2 includes a protruding block 20, which is connected to the housing 100. The longitudinal section of the protruding block 20 is circular or elliptical, with a plane parallel to the connecting surface 10 as its longitudinal section. This design facilitates accurate positioning of the welding points by the operator, and the circular or elliptical longitudinal section makes the welded protruding structure 2 more flat and aesthetically pleasing.

[0039] To improve the connection stability between the housing 100 and the stator body 1, multiple protrusions 2 are provided on each connection surface 10, and the multiple protrusions 2 are spaced apart along the axial direction of the stator body 1. In this way, the multiple protrusions 2 serve as welding points, making the connection between the stator body 1 and the housing 100 stable.

[0040] The present invention also provides a compressor, such as Figures 4 to 11 As shown, it includes a housing 100 and a stator structure. The stator structure is installed inside the housing 100 and connected to the housing 100. The stator structure is the stator structure of the above embodiment.

[0041] In specific implementation, such as Figure 6 As shown, the housing 100 is provided with a clearance portion 101, which is opposite to the protruding structure 2 of the stator structure, so as to avoid the protruding structure 2 by means of the clearance portion 101. Preferably, at least a portion of the protruding structure 2 is embedded in the clearance portion 101, so that the housing 100 and the stator body 1 can be pre-positioned between welding by means of the protruding structure 2 being embedded in the clearance portion 101, thereby improving the welding accuracy.

[0042] Specifically, the clearance portion 101 is a clearance hole 1010, and at least a portion of the protruding structure 2 passes through the clearance hole 1010. This structure is simple and easy to implement, facilitating the drilling of holes in the housing 100 to allow the protruding structure 2 to pass through the clearance hole 1010. Before welding, the at least portion of the protruding structure 2 passing through the clearance hole 1010 achieves pre-positioning between the housing 100 and the stator body 1.

[0043] In specific implementation, the housing 100 includes: a first housing 102; a second housing 103 connected to the first housing 102 to form a mounting cavity 200 for mounting the stator structure between the first housing 102 and the second housing 103; and a clearance portion 101 disposed on the first housing 102 and / or the second housing 103. By dividing the housing 100 into a first housing 102 and a second housing 103, during installation, the first housing 102 or the second housing 103 can be individually fitted onto the stator body 1 from a first direction and fixed before installing the second housing 103 or the first housing 102, and finally the first housing 102 and the second housing 103 are welded together. Preferably, the clearance portion 101 is disposed on the connection surface connecting the first housing 102 and the second housing 103, and / or the clearance portion 101 is disposed on the connection surface connecting the second housing 103 and the first housing 102.

[0044] In the embodiments provided by the present invention, such as Figure 6 and Figure 9 As shown, a first notch 1020 is provided on the first housing 102, and a second notch 1030 is provided on the second housing 103 opposite to the first notch 1020, so as to form a clearance portion 101 between the first notch 1020 and the second notch 1030. This arrangement positions the first housing 102 by fitting the first notch 1020 into the first part of the protruding structure 2, and then positions the second housing 103 by fitting the second notch 1030 on the second housing 103 into the second part of the protruding structure 2. Finally, the protruding structure 2 is welded to the first housing 102 and the second housing 103 together.

[0045] Specifically, the first housing 102 and the second housing 103 are arranged opposite each other along the radial direction of the housing 100, or the first housing 102 and the second housing 103 are arranged opposite each other along the axial direction of the housing 100. Figure 8 and Figure 11 As shown, when the clearance part 101 is provided on the first housing 102, the first housing 102 is first installed, and the clearance part 101 on the first housing 102 is positioned in conjunction with the protruding structure 2. Then, the protruding structure 2 is welded to the first housing 102 as a single unit. Next, the second housing 103 is installed, and the second housing 103 is welded to the first housing 102 as a single unit. Alternatively, as... Figure 7 and Figure 10As shown, when the clearance part 101 is provided on the second housing 103, the second housing 103 is first installed, and the clearance part 101 on the second housing 103 cooperates with the protruding structure 2 for positioning. Then, the protruding structure 2 is welded to the second housing 103 as a whole. After that, the first housing 102 is installed, and the first housing 102 is welded to the second housing 103 as a whole. By providing the clearance part 101 on the housing 100 that cooperates with the protruding structure 2, the stator body 1 is positioned in the circumferential and axial directions, and the protruding structure 2 bears the forces in both directions, ensuring the stability and retention of the stator structure inside the compressor housing 100 during compressor operation.

[0046] Specifically, the outer diameter of the stator body 1 is D1, the inner diameter of the housing 100 is D2, and -0.1≤(D1-D2)≤0.1.

[0047] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects:

[0048] The stator structure installed in the housing 100 of a compressor according to the present invention includes a stator body 1 and a protruding structure 2. The stator body 1 is provided with a connecting surface 10 for connecting to the housing 100. The protruding structure 2 is provided on the connecting surface 10, and at least a portion of the protruding structure 2 protrudes from the connecting surface 10 toward the housing 100 until it passes through the housing 100, so as to connect with the compressor housing 100 through the protruding structure 2. This arrangement reduces the contact area between the stator body 1 and the housing 100. The protruding structure 2 is directly at the welding point between the housing 100 and the stator body 1. The protruding structure buffers the heat generated during welding, preventing the heat from being directly transferred to the slots on the stator body 1, reducing the damage of heat to the insulation of the stator core slots, and reducing electrical safety risks. At the same time, placing the protruding structure 2 on the connecting surface 10 also avoids the influence on the magnetic circuit of the motor yoke.

[0049] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0050] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0051] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A compressor comprising a housing (100) and a stator structure, the stator structure being mounted within and connected to the housing (100), characterized in that, The stator structure includes: The stator body (1) is provided with a connecting surface (10) that is connected to the housing (100); there are multiple connecting surfaces (10), and the multiple connecting surfaces (10) are spaced apart along the circumference of the stator body (1); A protruding structure (2) is provided on the connecting surface (10). At least a portion of the protruding structure (2) protrudes from the connecting surface (10) toward the housing (100) until it passes through the housing (100) to connect with the housing (100) of the compressor through the protruding structure (2). A plurality of protruding structures (2) are provided on each connecting surface (10), and the plurality of protruding structures (2) are spaced apart along the axial direction of the stator body (1). The protruding structure (2) includes a protruding block (20), which is connected to the housing (100). The longitudinal section of the protruding block (20) is a polygon, with a plane parallel to the connecting surface (10) as its longitudinal section; or, the longitudinal section of the protruding block (20) is a quadrilateral. The housing (100) includes: a first housing (102); and a second housing (103) connected to the first housing (102); the first housing (102) is provided with a first notch (1020), and the second housing (103) is provided with a second notch (1030) opposite to the first notch (1020) to form a clearance portion (101) between the first notch (1020) and the second notch (1030); the first housing (102) and the second housing (103) are disposed opposite to each other along the axial direction of the housing (100); The housing (100) is provided with a clearance part (101), which is opposite to the protruding structure (2) of the stator structure, so as to avoid the protruding structure (2) through the clearance part (101). The protruding structure (2) is the welding point of the housing (100) and the stator body (1), and the first housing (102) and the second housing (103) are welded together by the protruding structure (2); The clearance portion (101) is a clearance hole (1010), and at least a portion of the protrusion structure (2) passes through the clearance hole (1010).

2. The compressor according to claim 1, characterized in that, A mounting cavity (200) for mounting the stator structure is formed between the first housing (102) and the second housing (103). The clearance portion (101) is disposed on the first housing (102) and / or the second housing (103).

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