Stator assembly, compressor motor, compressor and refrigerator
By forming a ring structure and a notch in the stator coil on the stator core, the problem of increasing compressor height was solved, thus achieving a reduction in compressor height and an increase in refrigerator volume.
Patent Information
- Application Number
- CN202422815607.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-18
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-11-18
AI Technical Summary
The stator winding of existing inverter refrigerator compressors into a ring structure increases the compressor height, affecting the volume of the refrigerator's refrigerator and freezer compartments.
A ring structure is formed on the stator core, and the stator coils are arranged sequentially with notches. The compressor cylinder seat is close to the end face of the stator core, eliminating the obstruction of the coils to the cylinder seat and reducing the axial dimension of the compressor rotor.
Lowering the overall height of the compressor avoids encroaching on the volume of the refrigerator and freezer compartments, thus increasing the overall volume of the refrigerator.
Smart Images
Figure CN223502638U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of compression equipment technology, and more specifically, to a stator assembly, a compressor motor, a compressor, and a refrigerator. Background Technology
[0002] Currently, most variable frequency refrigerator compressors on the market use permanent magnet synchronous motors with a three-phase concentrated winding structure. The stator coils on the stator core are evenly distributed around the central axis, forming a complete annular coil arrangement around the rotor. When designing the compressor cylinder base, it's necessary to raise the cylinder base relative to the stator core to avoid the stator coils protruding above the stator core, thus increasing the overall height of the compressor. For refrigerator manufacturers, this increased compressor height means a larger compressor compartment is required. With the overall refrigerator volume remaining constant, this means reducing the volume of the refrigerator and freezer compartments, thus limiting the refrigerator's capacity. Utility Model Content
[0003] The purpose of this application is to provide a stator assembly, a compressor motor, a compressor, and a refrigerator, which can effectively reduce the distance between the compressor cylinder seat and the stator core by improving the stator assembly, thereby reducing the overall height of the compressor.
[0004] The embodiments of this application are implemented as follows:
[0005] In a first aspect, embodiments of this application provide a stator assembly, including a stator core and stator coils; an annular structure is formed on the stator core, and the space within the annular structure is used to install a rotor; there are multiple stator coils, which are arranged sequentially around the circumference of the annular structure to form an arc-shaped arrangement path, and a coil notch is formed between the two ends of the arc-shaped arrangement path; the coil notch is used to arrange a compressor cylinder seat, so that the compressor cylinder seat can be close to the end face of the stator core at the coil notch.
[0006] As an optional implementation, the stator core is provided with a plurality of through slots arranged circumferentially around the rotor, the through slots extending axially along the annular structure, and stator teeth are formed between adjacent through slots; the stator coil passes through two adjacent through slots and is wound around the stator teeth.
[0007] As an optional implementation, the number of stator teeth is the same as the number of stator coils.
[0008] As an optional implementation, the stator core is provided with a support platform at the coil notch; the support platform has an effective support surface that fits against the compressor cylinder seat; the effective support surface is perpendicular to the rotor axis.
[0009] As an optional implementation, the support platform is provided with a clearance groove on the side away from the rotor, and the extension direction of the clearance groove is consistent with the axial direction of the rotor.
[0010] As an optional implementation, there are two coil notches arranged symmetrically about the rotor, and two compressor cylinder seats with installation positions corresponding one-to-one with the positions of the two coil notches.
[0011] Secondly, embodiments of this application provide a compressor motor, including the aforementioned stator assembly, compressor cylinder seat, and rotor; the rotor is installed within the annular structure of the stator assembly; the compressor cylinder seat is arranged at one end of the stator assembly, and the end face of the compressor cylinder seat is close to the notch in the stator core.
[0012] As an optional implementation, the compressor cylinder seat is provided with a first connecting part; the stator core is provided with a second connecting part, and the first connecting part and the second connecting part are connected by a locking member.
[0013] As an optional implementation, there are multiple first connecting parts arranged at intervals around the rotor axis; the number of second connecting parts is the same as the number of first connecting parts and they are connected in a one-to-one correspondence.
[0014] Thirdly, this application provides a compressor, including an outer protective shell and the aforementioned compressor motor disposed within the outer protective shell; a cylinder is disposed on the compressor cylinder seat, a piston is disposed inside the cylinder, and a crankshaft connecting rod connected to a rotor is disposed on the piston, and the rotor drives the piston to reciprocate within the cylinder through the crankshaft connecting rod.
[0015] Fourthly, embodiments of this application also provide a refrigerator, including the aforementioned compressor and a compartment for storing items.
[0016] The beneficial effects of the embodiments of this application include:
[0017] This application provides a stator assembly including a stator core and stator coils. The stator core has an annular structure, and the space within the annular structure is used to mount a rotor. Multiple stator coils are arranged sequentially around the circumference of the annular structure, forming an arc-shaped arrangement path. A coil notch is formed between the two ends of the arc-shaped arrangement path. A compressor cylinder seat is arranged at the coil notch, allowing the compressor cylinder seat to be close to the end face of the stator core at the coil notch. Compared to the prior art, the stator coils in this application do not form a complete annular path around the rotor, thus eliminating the distance between the compressor cylinder seat and the end face of the stator core, thereby reducing the axial dimension of the compressor.
[0018] This application provides a compressor motor, including the aforementioned stator assembly, compressor cylinder holder, and rotor. In this embodiment, the rotor is mounted within the annular structure of the stator assembly. The compressor cylinder holder is located at one end of the stator assembly, near the end face of the stator core at the notch in the coil. The compressor motor provided in this embodiment uses the aforementioned stator assembly, which allows the compressor cylinder holder to be as close as possible to the stator core, thereby eliminating the distance between the compressor cylinder holder and the end face of the stator core, and reducing the axial dimension of the compressor.
[0019] This application provides a compressor, including an outer protective shell and the aforementioned compressor motor disposed within the outer protective shell. A cylinder is disposed on the compressor cylinder seat, a piston is disposed within the cylinder, and a crankshaft connecting rod connected to a rotor is disposed on the piston. The rotor drives the piston to reciprocate within the cylinder via the crankshaft connecting rod. The compressor provided in this application uses the aforementioned compressor motor, which reduces the overall height of the compressor, thus not encroaching on the volume of the refrigerator and freezer compartments, allowing the refrigerator to have a larger capacity.
[0020] This application also provides a refrigerator, including the aforementioned compressor and a compartment for storing items. The refrigerator provided in this application uses the aforementioned compressor, which, compared to the prior art, has the advantage of a smaller size, which is beneficial for increasing the volume of the refrigerator's refrigerator compartment and freezer compartment. Attached Figure Description
[0021] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1 This is one of the structural schematic diagrams of the stator assembly in an embodiment of this application;
[0023] Figure 2 This is a second schematic diagram of the stator assembly according to an embodiment of this application;
[0024] Figure 3 This is the third schematic diagram of the stator assembly in an embodiment of this application;
[0025] Figure 4 This is the fourth schematic diagram of the stator assembly in an embodiment of this application;
[0026] Figure 5 This is the fifth schematic diagram of the stator assembly in the embodiments of this application;
[0027] Figure 6 This is the sixth schematic diagram of the stator assembly in the embodiments of this application;
[0028] Figure 7 This is a schematic diagram of the compressor structure according to an embodiment of this application;
[0029] Figure 8 This is one of the structural schematic diagrams of a stator assembly in the prior art;
[0030] Figure 9 This is the second schematic diagram of the structure of a stator assembly in the prior art.
[0031] icon:
[0032] 100-Stator core; 101-Stator coil; 102-Annular structure; 103-Coil notch; 104-Compressor cylinder seat; 105-Through slot; 106-Stator teeth; 107-Support platform; 108-Effective support surface; 109-Allowing slot; 110-Rotor; 111-First connecting part; 112-Second connecting part; 113-Outer protective shell; 114-Compressor motor; 115-Cylinder; 116-Piston; 117-Crankshaft connecting rod. Detailed Implementation
[0033] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0034] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.
[0035] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0036] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0037] Currently, most of the permanent magnet synchronous motors used in inverter refrigerator compressors on the market have a three-phase concentrated winding structure. (Refer to...) Figure 8 , Figure 9 As shown, the stator coils on the stator core are evenly distributed around the central axis, forming a complete annular coil arrangement structure around the rotor. When designing the compressor cylinder base, it is necessary to raise the cylinder base relative to the stator core to avoid a structure where the stator coils are higher than the stator core, thus increasing the overall height of the compressor. For refrigerator manufacturers, this increased compressor height means a larger compressor compartment is required. With the overall refrigerator volume remaining constant, this means reducing the volume of the refrigerator and freezer compartments, thus limiting the refrigerator's capacity.
[0038] To address the aforementioned technical problems, embodiments of this application provide a stator assembly, a compressor motor 114, a compressor, and a refrigerator.
[0039] Reference Figure 1 , Figure 2 as well as Figure 3As shown, this application embodiment provides a stator assembly, including a stator core 100 and stator coils 101; an annular structure 102 is formed on the stator core 100, and the space within the annular structure 102 is used to install a rotor 110; there are multiple stator coils 101, which are arranged sequentially around the circumference of the annular structure 102 to form an arc-shaped arrangement path, and a coil notch 103 is formed between the two ends of the arc-shaped arrangement path; the coil notch 103 is used to arrange a compressor cylinder seat 104 so that the compressor cylinder seat 104 can be close to the end face of the stator core 100 at the coil notch 103.
[0040] It should be noted that the compressor cylinder seat 104 is located at the upper end of the stator core 100.
[0041] In this embodiment, the stator coil 101 is arranged circumferentially around the rotor 110. The arc arrangement path of the stator coil 101 does not form a complete loop. A coil notch 103 is formed at the position corresponding to the compressor cylinder seat 104 to prevent the height of the stator coil 101 from blocking the compressor cylinder seat 104 from approaching the stator core 100.
[0042] It should be noted that the compressor cylinder seat 104 forms a projection on the stator core 100 along the axial direction of the rotor 110, and the projection falls into the coil notch 103.
[0043] Regarding the description of the coil notch 103, the position of the coil notch 103 corresponds to the compressor cylinder seat 104 along the axial direction of the rotor 110. The opening spacing of the coil notch 103 is slightly greater than or equal to the circumferential dimension of the compressor cylinder seat 104 on the rotor 110. It should be noted that the stator assembly in this embodiment is essentially a structure in which there is no stator coil at a specific circumferential position of the rotor 110, eliminating the obstruction of the stator coil 101 on the compressor cylinder seat 104 and components such as the piston 116 and connecting rod, so that the compressor cylinder seat 104 can be as close as possible to the stator core 100.
[0044] Reference Figure 6 , Figure 9 As shown, regarding the quantity of stator coils 101, in the prior art, nine stator coils 101 arranged in sequence are usually provided on the stator core 100; in this embodiment of the application, six stator coils 101 arranged in sequence can be provided to form the coil notch 103.
[0045] It should be noted that those skilled in the art can design the number of stator coils 101 as needed, and there are no special limitations on this.
[0046] This application provides a stator assembly including a stator core 100 and stator coils 101. An annular structure 102 is formed on the stator core 100, and the space within the annular structure 102 is used to install a rotor 110. Multiple stator coils 101 are arranged sequentially around the circumference of the annular structure 102, forming an arc-shaped arrangement path. A coil notch 103 is formed between the two ends of the arc-shaped arrangement path.
[0047] In this embodiment of the application, a compressor cylinder seat 104 is arranged at the inlet 103 so that the compressor cylinder seat 104 can be close to the end face of the stator core 100 at the inlet 103.
[0048] It should be noted that the compressor cylinder seat 104 can be directly fitted to the end face of the stator core 100, which can minimize the height of the compressor cylinder seat 104. Of course, if necessary, a certain gap can be provided between the compressor cylinder seat 104 and the surface of the stator core 100. It should be noted that as long as this gap is smaller than the size of the stator coil 101 protruding from the stator core 100, it can achieve the effect of reducing the height of the compressor.
[0049] Compared to the prior art, the stator coil 101 in this embodiment of the application is not arranged in a complete annular path around the rotor 110, forming a coil notch 103, so that the compressor cylinder seat 104 can be as close as possible to the stator core 100, thereby eliminating the distance between the compressor cylinder seat 104 and the end face of the stator core 100, and reducing the size of the compressor in the axial direction of the rotor 110.
[0050] Reference Figure 4 , Figure 5 As shown, in one optional implementation, the stator core 100 is provided with a plurality of through slots 105 arranged circumferentially around the rotor 110. The through slots 105 extend along the axial direction of the annular structure 102, and stator teeth 106 are formed between adjacent through slots 105. The stator coil 101 passes through two adjacent through slots 105 and is wound around the stator teeth 106.
[0051] It should be noted that the number of stator teeth 106 can be greater than the number of stator coils 101. For example, with 9 stator teeth 106, 6 stator coils 101, and 3 stator coils 101 fitting into the stator coil 101, a coil notch 103 is formed.
[0052] Preferably, the number of stator teeth 106 is the same as the number of stator coils 101.
[0053] For example, six stator coils 101 are correspondingly fitted onto six stator teeth 106. At this time, the space at the coil notch 103 can accommodate three stator coils 101. However, if no stator coils 101 are set, and the coils rotate 360 degrees around the rotor 110, the central angle corresponding to one stator coil 101 or one stator tooth 106 is 40 degrees. That is to say, the stator coils 101 are continuously set around 240 degrees in the circumference, and the central angle corresponding to the coil notch 103 is 120 degrees.
[0054] For example, nine stator coils 101 are correspondingly fitted onto nine stator teeth 106. At this time, the space at the coil notch 103 can accommodate three stator coils 101. However, if no stator coils 101 are set, and the coils rotate 360 degrees around the rotor 110, the central angle corresponding to one stator coil 101 or one stator tooth 106 is 30 degrees. That is to say, the stator coils 101 are continuously set around 270 degrees in the circumference, and the central angle corresponding to the coil notch 103 is 90 degrees.
[0055] Reference Figure 4 , Figure 5 As shown, in an optional implementation, the stator core 100 is provided with a support platform 107 at the coil notch 103; the support platform 107 has an effective support surface 108 that fits against the compressor cylinder seat 104; the effective support surface 108 is perpendicular to the axial direction of the rotor 110.
[0056] Preferably, in the embodiments of this application, the compressor cylinder seat 104 is in direct contact with the stator core 100, thereby maximizing the positional reduction of the compressor cylinder seat 104.
[0057] As an optional implementation, the support platform 107 is provided with a relief groove 109 on the side opposite to the rotor 110, and the extension direction of the relief groove 109 is consistent with the axial direction of the rotor 110.
[0058] Furthermore, the embodiment of this application, by setting the clearance groove 109, can arrange other structures on the one hand, and reduce the weight of the stator core 100 on the other hand, which is conducive to achieving lightweight design.
[0059] Reference Figure 7 As shown, this application embodiment provides a compressor motor 114, including the above-mentioned stator assembly, compressor cylinder seat 104 and rotor 110; the rotor 110 of this application embodiment is installed in the annular structure 102 of the stator assembly; the compressor cylinder seat 104 of this application embodiment is arranged at one end of the stator assembly, and the end face of the compressor cylinder seat 104 is close to the coil notch 103 of the stator core 100.
[0060] The compressor motor 114 provided in this embodiment adopts the stator assembly described above, which allows the compressor cylinder seat 104 to be as close as possible to the stator core 100, thereby eliminating the distance between the compressor cylinder seat 104 and the end face of the stator core 100, and reducing the axial dimension of the compressor 110.
[0061] Furthermore, refer to Figure 1 , Figure 2 As shown, a first connecting part 111 is provided on the compressor cylinder seat 104; a second connecting part 112 is provided on the stator core 100, and the first connecting part 111 and the second connecting part 112 are connected by a locking member.
[0062] The first connecting part 111 has multiple parts and is arranged at intervals around the axis of rotor 110; the number of the second connecting parts 112 is the same as the number of the first connecting parts 111 and they are connected one-to-one.
[0063] It should be noted that there may be four first connecting parts 111, which are evenly spaced around the circumference of the rotor 110. A stable connection can be achieved through the first connecting parts 111 and the second connecting parts 112.
[0064] Reference Figure 7 As shown, this application embodiment provides a compressor, including an outer protective shell 113 and the aforementioned compressor motor 114 disposed within the outer protective shell 113; a cylinder 115 is disposed on the compressor cylinder seat 104, a piston 116 is disposed inside the cylinder 115, and a crankshaft connecting rod 117 connected to the rotor 110 is disposed on the piston 116, and the rotor 110 drives the piston 116 to move back and forth within the cylinder 115 through the crankshaft connecting rod 117.
[0065] As an alternative implementation, there are two coil notches 103 symmetrically arranged about the rotor 110, and two compressor cylinder seats 104 with their installation positions corresponding one-to-one with the positions of the two coil notches 103.
[0066] Furthermore, this embodiment of the application has two symmetrical coil notches 103, each coil notch 103 corresponding to a compressor cylinder seat 104. It should be noted that cylinders 115 can be formed within the two compressor cylinder seats 104, creating two double-cylinder structures. A piston 116 is respectively installed within each of the two cylinders 115, and a crankshaft connecting rod 117 connected to the rotor 110 is installed on the piston 116, enabling the linkage of the two pistons 116. The arrangement of two cylinders 115 increases the volume of the cylinders 115, which is beneficial for enhancing the compressor power.
[0067] The compressor provided in this embodiment uses the compressor motor 114 described above, which reduces the overall height of the compressor and thus does not encroach on the volume of the refrigerator and freezer compartments, allowing the refrigerator to have a larger volume.
[0068] In addition, this application also provides a refrigerator, including the compressor described above, and a compartment for storing items.
[0069] The refrigerator provided in this application uses the above-mentioned compressor. Compared with the prior art, the above-mentioned compressor has the advantage of small size, which is beneficial to increasing the volume of the refrigerator's refrigeration compartment and freezer compartment.
[0070] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A stator assembly, characterized in that, The stator includes a stator core (100) and stator coils (101); an annular structure (102) is formed on the stator core (100), and the space inside the annular structure (102) is used to install a rotor (110); there are multiple stator coils (101), and the multiple stator coils (101) are arranged sequentially around the circumference of the annular structure (102) to form an arc arrangement path, and a coil notch (103) is formed between the two ends of the arc arrangement path; the coil notch (103) is used to arrange a compressor cylinder seat (104) so that the compressor cylinder seat (104) can be close to the end face of the stator core (100) at the coil notch (103).
2. The stator assembly according to claim 1, characterized in that, The stator core (100) is provided with a plurality of through slots (105) arranged circumferentially around the rotor (110). The through slots (105) extend along the axial direction of the annular structure (102), and stator teeth (106) are formed between adjacent through slots (105). The stator coil (101) passes through two adjacent through slots (105) and is wound around the stator teeth (106).
3. The stator assembly according to claim 2, characterized in that, The number of stator teeth (106) is the same as the number of stator coils (101).
4. The stator assembly according to claim 3, characterized in that, The stator core (100) is provided with a support platform (107) at the coil notch (103); the support platform (107) has an effective support surface (108) that fits against the compressor cylinder seat (104); the effective support surface (108) is perpendicular to the axial direction of the rotor (110).
5. The stator assembly according to claim 4, characterized in that, The support platform (107) has a clearance groove (109) on the side away from the rotor (110), and the extension direction of the clearance groove (109) is consistent with the axial direction of the rotor (110).
6. The stator assembly according to any one of claims 1-5, characterized in that, It has two coil notches (103) symmetrically arranged about the rotor (110), and two compressor cylinder seats (104) with their installation positions corresponding one-to-one with the positions of the two coil notches (103).
7. A compressor motor (114), characterized in that, The stator assembly, compressor cylinder seat (104), and rotor (110) as described in any one of claims 1-6 are included; the rotor (110) is mounted in the annular structure (102) of the stator assembly; the compressor cylinder seat (104) is arranged at one end of the stator assembly, and the compressor cylinder seat (104) is located near the end face of the stator core (100) at the coil notch (103).
8. The compressor motor (114) according to claim 7, characterized in that, The compressor cylinder seat (104) is provided with a first connecting part (111); the stator core (100) is provided with a second connecting part (112), and the first connecting part (111) and the second connecting part (112) are connected by a locking member.
9. The compressor motor (114) according to claim 8, characterized in that, The first connecting part (111) has multiple parts and is arranged at intervals around the axis of the rotor (110); the number of the second connecting parts (112) is the same as the number of the first connecting parts (111) and they are connected one-to-one.
10. A compressor, characterized in that, The compressor includes an outer protective shell (113) and a compressor motor (114) according to any one of claims 7-9 disposed within the outer protective shell (113); a cylinder (115) is disposed on the compressor cylinder seat (104), a piston (116) is disposed inside the cylinder (115), a crankshaft connecting rod (117) connected to the rotor (110) is disposed on the piston (116), and the rotor (110) drives the piston (116) to move back and forth within the cylinder (115) through the crankshaft connecting rod (117).
11. A refrigerator, characterized in that, It includes the compressor as described in claim 10, and a compartment for storing articles.