CN217469590U - Motor rotor subassembly and compressor - Google Patents
Motor rotor subassembly and compressor Download PDFInfo
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- CN217469590U CN217469590U CN202221313266.8U CN202221313266U CN217469590U CN 217469590 U CN217469590 U CN 217469590U CN 202221313266 U CN202221313266 U CN 202221313266U CN 217469590 U CN217469590 U CN 217469590U
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- rotor core
- core body
- crankshaft
- rotor
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Abstract
The utility model provides a motor rotor subassembly and compressor relates to compressor technical field. The motor rotor assembly comprises a rotor core body and a magnetic block. The utility model discloses a motor rotor subassembly is applied to the compressor, and the rotor core is through die-casting technology or powder metallurgy sintering process integrated into one piece and arrange the magnetic path in rotor core circumference side, compares in traditional towards piece punching press and stack formation rotor core, and raw and other materials can adopt materials such as cast iron, and the consumptive material is few, has greatly reduced material cost; the processing technology is simple, the requirements on processing and forming equipment are low, the processing and manufacturing cost is reduced, and the processing and forming efficiency is higher; the rotor core body is solid integrative structure, compares in traditional towards piece punching press and stack formation rotor core body, and its weight is bigger at the same height, and it is more steady to operate, for the application of low thickness motor scheme, provides effectual damping and falls the scheme of making an uproar.
Description
Technical Field
The utility model belongs to the technical field of the compressor technique and specifically relates to a motor rotor subassembly and compressor are related to.
Background
The compressor is a key part of the refrigeration system, drives the crankshaft to rotate through the motor, drives the piston to reciprocate up and down in the cylinder through the transmission of the connecting rod, and completes the suction, compression and conveying of the refrigerant under the matching of the suction valve and the exhaust valve. The main component of a motor rotor of the compressor is a rotor core, the rotor core is formed by punching a certain number of punching sheets with specific thickness according to a specific shape, then stacking the punching sheets, and fastening and assembling the punching sheets into a whole through rivets. The punching sheet is made of silicon steel, the cost of raw materials is high, the punching sheet punching and stacking fixing processes are complex, and the processing and forming efficiency is low. Moreover, rotor core and bent axle cooperation part to and dodge the part with cylinder block shaft hole, the size of punching the piece is different, needs different moulds to carry out die-cut processing, and equipment input cost is higher. In addition, for the variable frequency compressor, the overall cost can be further reduced by stacking the low motor thick, but the stacking thickness is reduced, the weight of the machine core is reduced, and the full-rotating-speed vibration and noise performance can be worsened.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an electric motor rotor subassembly and compressor, its rotor core is solid integrative structure to replace traditional towards piece punching press and stack forming mode.
In order to achieve the above object, the present invention adopts the following technical solutions:
a motor rotor assembly comprises a rotor core body and magnetic blocks;
the rotor core body is of an integrally formed solid structure, and an assembling hole for assembling a crankshaft and an avoiding hole for avoiding a cylinder seat are sequentially formed in the center of one end face of the rotor core body along the axis of the rotor core body;
the magnetic block is made of magnetic steel materials, and the inner wall of the magnetic block is matched with the side face of the rotor core body in shape;
the side face of the rotor core body is provided with a plurality of magnetic blocks at equal intervals, gaps are reserved between every two adjacent magnetic blocks, the inner walls of the magnetic blocks are attached to the side face of the rotor core body, the magnetic blocks are fixedly connected with the rotor core body, and the magnetic blocks and the assembling holes are arranged coaxially.
Preferably, the edge position of at least one end face of the rotor core body is provided with process holes with the same number as the magnetic blocks at equal intervals.
Preferably, the outer contour of the rotor core body is cylindrical, and the inner wall of the magnetic block is an arc surface.
Preferably, the inner wall of the magnetic block is bonded with the side face of the rotor core body through glue.
Preferably, the rotor core is integrally formed by a die-casting process.
Preferably, the rotor core is integrally formed by adopting a powder metallurgy sintering process.
A compressor comprises a crankshaft, a cylinder seat and the motor rotor assembly, wherein the cylinder seat is provided with a crankshaft sleeve, the crankshaft is assembled in the crankshaft sleeve, one end of the crankshaft is assembled in an assembly hole, and the crankshaft sleeve is located in an avoiding hole.
Preferably, one end of the crankshaft is in interference fit with the assembly hole.
The utility model has the beneficial technical effects that:
the utility model discloses a motor rotor subassembly is applied to the compressor, and the rotor core is through die-casting technology or powder metallurgy sintering process integrated into one piece and arrange the magnetic path in rotor core circumference side, compares traditional towards piece punching press and stack formation rotor core, and raw and other materials can adopt materials such as cast iron, and the consumptive material is few, has greatly reduced material cost; the processing technology is simple, the requirements on processing and forming equipment are low, the processing and manufacturing cost is reduced, and the processing and forming efficiency is higher; the rotor core body is solid integrative structure, compares in traditional towards piece punching press and stack formation rotor core body, and its weight is bigger at the same height, and it is more steady to operate, for the application of low thickness motor scheme, provides effectual damping and falls the scheme of making an uproar.
Drawings
Fig. 1 is a perspective view of a motor rotor assembly according to an embodiment of the present invention;
fig. 2 is a first perspective view of a rotor core according to an embodiment of the present invention;
fig. 3 is a second perspective view of the rotor core according to the embodiment of the present invention;
fig. 4 is a schematic view of a partial structure of a compressor according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings. Certain embodiments of the present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown. Indeed, various embodiments of the invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will satisfy applicable legal requirements.
In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", "lower", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In an embodiment of the present invention, a motor rotor assembly and a compressor are provided, please refer to fig. 1 to 4.
A motor rotor assembly comprises a rotor core body 1 and magnetic blocks 2.
The rotor core body 1 is an integrally formed solid structure, and the outer contour of the rotor core body 1 is cylindrical. The rotor core body 1 can be integrally formed by a die-casting process, and the rotor core body can also be integrally formed by a powder metallurgy sintering process, so that the material consumption is low, and the high cost of the material caused by more material consumption is greatly reduced.
An assembly hole 11 and an avoidance hole 12 are sequentially formed in the center of one end face of the rotor core 1 along the axis of the rotor core 1, and the assembly hole 11 is used for assembling the crankshaft 3 and avoiding a crankshaft sleeve 41 of the cylinder block 4.
The rotor core body 1 can be made of cast iron and other materials with lower material cost, so that the material cost is effectively lower.
The magnetic block 2 is made of magnetic steel materials, and the inner wall of the magnetic block 2 is provided with an arc surface so as to be matched with the shape of the circumferential side surface of the rotor core body 1. So, in order to realize the closely matched of magnetic path 2 and rotor core 1 to make the whole overall dimension of the two less, be favorable to the miniaturized design of motor. In addition, the circular arc surface is matched with the circumferential side surface, so that the coaxial arrangement of the magnetic block 2 and the assembling hole 11 can be ensured, and the assembling difficulty between the magnetic block and the assembling hole is reduced. The magnetic block 2 and the assembling hole 11 are coaxially arranged to ensure the concentricity of the motor rotor assembly and the main shaft in the rotating process, so that the compressor runs more stably, the friction pair is stressed more uniformly, and the service life of the compressor is longer.
An even number of magnetic blocks 2 are arranged on the circumferential side surface of the rotor core body 1 at equal intervals, and the number of the magnetic blocks 2 is six in the embodiment. Gaps are reserved between the adjacent magnetic blocks 2, and the inner walls of the magnetic blocks 2 are attached to the circumferential side face of the rotor core body 1. The magnetic block 2 is fixedly connected with the rotor core body 1, specifically, the inner wall of the magnetic block 2 is bonded with the circumferential side face of the rotor core body 1 through glue, so that the magnetic block 2 is fixedly connected with the rotor core body 1.
Six fabrication holes 13 are formed at the edge positions of the two end faces of the rotor core body 1 at equal intervals, wherein the fabrication holes 13 are blind holes. The fabrication holes 13 are used for positioning the magnetic blocks 2 when the magnetic blocks 2 are attached and fixed to the rotor core body 1, so that the magnetic blocks 2 are accurately and uniformly distributed on the circumferential side surface of the rotor core body 1.
A compressor comprises a crankshaft 3 and a cylinder seat 4, and further comprises the motor rotor assembly, a crankshaft sleeve 41 is arranged on the cylinder seat 4, the crankshaft 3 is assembled in the crankshaft sleeve 41, one end of the crankshaft 3 is assembled in an assembling hole 11, and the crankshaft sleeve 41 is located in an avoiding hole 12. Wherein, the one end interference fit pilot hole 11 of bent axle 3, cold pressing or hot jacket technology all can to simplify the assembly between the one end of bent axle 3 and pilot hole 11, and the assembly is firm between the two.
Up to this point, the present embodiment has been described in detail with reference to the accompanying drawings. From the above description, those skilled in the art should clearly recognize that there is the present invention in an electric motor rotor assembly. The utility model discloses a motor rotor subassembly is applied to the compressor, and rotor core 1 is through die casting technology or powder metallurgy sintering process integrated into one piece and arrange magnetic path 2 in rotor core 1 circumference side, compares in traditional towards piece punching press and stack formation rotor core, and raw and other materials can adopt materials such as cast iron, and the consumptive material is few, has greatly reduced material cost; the processing technology is simple, the requirements on processing and forming equipment are low, the processing and manufacturing cost is reduced, and the processing and forming efficiency is higher; rotor core 1 is solid integrative structure, compares in traditional towards piece punching press and stack formation rotor core, and its weight is bigger at the same height, and it is more steady to operate, for the application of low thickness motor scheme, provides effectual damping and falls the scheme of making an uproar.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (8)
1. An electric machine rotor assembly characterized by: the rotor comprises a rotor core body and a magnetic block;
the rotor core body is of an integrally formed solid structure, and an assembling hole for assembling a crankshaft and an avoiding hole for avoiding a cylinder seat are sequentially formed in the center of one end face of the rotor core body along the axis of the rotor core body;
the magnetic block is made of magnetic steel materials, and the inner wall of the magnetic block is matched with the side face of the rotor core body in shape;
the side face of the rotor core body is provided with a plurality of magnetic blocks at equal intervals, gaps are reserved between every two adjacent magnetic blocks, the inner walls of the magnetic blocks are attached to the side face of the rotor core body, the magnetic blocks are fixedly connected with the rotor core body, and the magnetic blocks and the assembling holes are arranged coaxially.
2. An electric machine rotor assembly as claimed in claim 1, wherein: the edge position of at least one end face of the rotor core body is provided with process holes with the same number as the magnetic blocks at equal intervals.
3. An electric machine rotor assembly as claimed in claim 1, wherein: the outer contour of the rotor core body is cylindrical, and the inner wall of the magnetic block is an arc surface.
4. An electric machine rotor assembly as claimed in claim 1, wherein: the inner wall of the magnetic block is bonded with the side face of the rotor core body through glue.
5. An electric machine rotor assembly as claimed in claim 1, wherein: the rotor core body is integrally formed by adopting a die-casting process.
6. An electric machine rotor assembly as claimed in claim 1, wherein: the rotor core body is integrally formed by adopting a powder metallurgy sintering process.
7. A compressor comprising a crankshaft and a cylinder block, characterized in that: the motor rotor assembly of any one of claims 1 to 6, wherein a crankshaft sleeve is arranged on the cylinder block, the crankshaft is assembled in the crankshaft sleeve, one end of the crankshaft is assembled in the assembling hole, and the crankshaft sleeve is positioned in the avoiding hole.
8. A compressor according to claim 7, wherein: one end of the crankshaft is in interference fit with the assembling hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221313266.8U CN217469590U (en) | 2022-05-30 | 2022-05-30 | Motor rotor subassembly and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221313266.8U CN217469590U (en) | 2022-05-30 | 2022-05-30 | Motor rotor subassembly and compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217469590U true CN217469590U (en) | 2022-09-20 |
Family
ID=83277751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221313266.8U Active CN217469590U (en) | 2022-05-30 | 2022-05-30 | Motor rotor subassembly and compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217469590U (en) |
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2022
- 2022-05-30 CN CN202221313266.8U patent/CN217469590U/en active Active
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