CN109286257B - Rotor and motor - Google Patents
Rotor and motor Download PDFInfo
- Publication number
- CN109286257B CN109286257B CN201811472653.4A CN201811472653A CN109286257B CN 109286257 B CN109286257 B CN 109286257B CN 201811472653 A CN201811472653 A CN 201811472653A CN 109286257 B CN109286257 B CN 109286257B
- Authority
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- China
- Prior art keywords
- air inlet
- rotor
- cooling channel
- air outlet
- wind shielding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000001816 cooling Methods 0.000 claims abstract description 98
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 3
- 230000007423 decrease Effects 0.000 claims description 3
- 239000000112 cooling gas Substances 0.000 abstract description 13
- 239000003570 air Substances 0.000 description 126
- 230000000694 effects Effects 0.000 description 10
- 239000007789 gas Substances 0.000 description 7
- 230000009471 action Effects 0.000 description 3
- 239000012080 ambient air Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
Abstract
The invention relates to a rotor and a motor, comprising: a rotating shaft; the rotor iron core is sleeved outside the rotating shaft; the air inlet baffle plate, the rotor core and the air outlet baffle plate are sleeved outside the rotating shaft and respectively abutted to the two axial ends of the rotor core, and the air inlet baffle plate, the rotor core and the air outlet baffle plate are jointly penetrated and formed into a cooling channel along the axial direction of the rotating shaft; the air inlet baffle is provided with an air inlet groove communicated with the outside on the axial end face, which is away from the rotor core, of the air inlet baffle, the air inlet groove comprises a bottom wall and a first wind shielding wall protruding out of the bottom wall, and an air inlet in the cooling channel is formed in the bottom wall; the air inlet in the cooling channel and the first wind shielding wall are arranged along the windward direction of the windward tank. When cooling gas flows from the windward tank to the cooling channel, the cooling gas is blocked by the first wind shielding wall, the flow speed is reduced, and the local pressure is increased, so that the pressure difference exists between the windward tank and the cooling channel, and the cooling gas can flow into the cooling channel conveniently.
Description
Technical Field
The invention relates to the technical field of driving devices, in particular to a rotor and a motor.
Background
The high-speed permanent magnet motor has the advantages of small volume, high power density, high efficiency and the like, meanwhile, the rotating speed of the high-speed permanent magnet motor is as high as tens of thousands of revolutions per minute or even hundreds of thousands of revolutions per minute, the operating frequency of the motor is far higher than that of a common motor, a rotor core generates great heat due to eddy current loss and magnetic loss, the high-speed permanent magnet motor is difficult to radiate due to small volume, so that the operating temperature of the rotor is too high, the permanent magnet is easy to demagnetize under high temperature and armature reaction, and therefore, how to improve the ventilation and cooling effects of the permanent magnet motor is one of key technologies for designing the permanent magnet motor.
The rotor of traditional permanent magnet motor includes pivot, rotor core, air inlet baffle and air-out baffle, and rotor core cup joints outside the pivot, and air inlet baffle and air-out baffle cup joint in the pivot and laminate in rotor core axial both ends, along the pivot axial, through-hole on air inlet baffle, rotor core and the air-out baffle set up relatively in order to form the cooling channel that air feed gas circulated.
The rotor, when the rotating shaft rotates, the cooling gas flows through the cooling channel to take away the heat of the rotor, so as to reduce the temperature rise of the rotor. However, in the actual working process, a closed air film is formed in the cooling channel when the rotating shaft rotates at a high speed, and the cooling gas is difficult to flow through the cooling channel and take away the heat of the rotor, so that the cooling effect is poor.
Disclosure of Invention
Based on this, it is necessary to provide a rotor and a motor with better cooling effect against the problem of poor cooling effect caused by the design mode of the conventional rotor.
A rotor, comprising:
a rotating shaft;
the rotor iron core is sleeved outside the rotating shaft; and
the air inlet baffle plate and the air outlet baffle plate are sleeved outside the rotating shaft and respectively abutted to the two axial ends of the rotor core, and the air inlet baffle plate, the rotor core and the air outlet baffle plate are jointly penetrated and formed into a cooling channel along the axial direction of the rotating shaft;
the air inlet baffle is provided with an air inlet groove communicated with the outside on the axial end face, which is away from the rotor core, of the air inlet baffle, the air inlet groove comprises a bottom wall and a first wind shielding wall protruding out of the bottom wall, and an air inlet in the cooling channel is formed in the bottom wall; the air inlet in the cooling channel and the first wind shielding wall are arranged along the windward direction of the windward tank.
In one embodiment, the windward tank is formed by stripping the axial end face of the air inlet baffle.
In one embodiment, the windward tank includes an air inlet end facing the first wind shielding wall, the air inlet in the cooling channel is located between the first wind shielding wall and the air inlet end, the air inlet in the cooling channel and the first wind shielding wall are arranged along the circumferential direction of the rotating shaft.
In one embodiment, the cross-sectional area of the windward tank along the radial direction of the rotating shaft gradually increases from the air inlet end to the end of the windward tank having the first wind shielding wall.
In one embodiment, the wall valley of the bottom wall of the windward tank is arranged opposite to the air inlet in the cooling channel.
In one embodiment, the bottom wall of the windward tank is in a smooth transition arc shape.
In one embodiment, a leeward protrusion is disposed on an axial end surface of the air outlet baffle, which faces away from the rotor core, and surrounds an air outlet in the cooling channel, the leeward protrusion includes an air outlet end communicated between the air outlet in the cooling channel and the outside, a second wind shielding wall is formed on an outer surface of the leeward protrusion, and the second wind shielding wall and the air outlet end are disposed along a windward direction of the leeward protrusion;
the cross section area of the second wind shielding wall along the radial direction of the rotating shaft gradually decreases from one end, communicated with the air outlet in the cooling channel, of the leeward protrusion to the air outlet end.
In one embodiment, one end of the leeward protrusion, which is communicated with the air outlet in the cooling channel, is arranged with the air outlet end along the circumferential direction of the rotating shaft.
In one embodiment, the wall peak of the inner wall of the leeward protrusion is arranged opposite to the air outlet in the cooling channel.
In one embodiment, the leeward protrusions are water-drop-shaped, and the second wind shielding wall is in a smooth transition arc shape.
An electric machine comprising a stator and a rotor as claimed in any one of the preceding claims, the rotor being rotatably journalled within the stator.
Above-mentioned rotor and motor, when cooling gas flows along the windward direction of windward groove, receives the blocking of first weather wall, and the velocity of flow slows down, and local pressure increases to produce pressure difference with the air intake in the cooling channel, in the cooling channel of cooling gas flow direction of being convenient for, so improved the cooling effect.
Drawings
FIG. 1 is a block diagram of a rotor according to an embodiment of the present invention;
FIG. 2 is a block diagram of an air intake baffle of the rotor shown in FIG. 1;
FIG. 3 is a bottom view of the air intake baffle shown in FIG. 2;
FIG. 4 is a cross-sectional view of the air intake baffle shown in FIG. 2;
FIG. 5 is a block diagram of an air outlet baffle of the rotor shown in FIG. 1;
FIG. 6 is a front view of the air outlet baffle shown in FIG. 5;
fig. 7 is a cross-sectional view of the air outlet baffle shown in fig. 5.
Detailed Description
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, 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 be thorough and complete.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 and 2, an embodiment of the present invention provides a motor, which includes a stator and a rotor 100, wherein the rotor 100 is rotatably sleeved in the stator.
The rotor 100 comprises a rotating shaft 10, a rotor core 20, an air inlet baffle 30 and an air outlet baffle 40, wherein the rotor core 20 is sleeved outside the rotating shaft 10, the air inlet baffle 30 and the air outlet baffle 40 are sleeved outside the rotating shaft 10, and the air inlet baffle 30 and the air outlet baffle 40 are respectively abutted to two axial ends of the rotor core 20 along the axial direction of the rotating shaft 10. Specifically, the air inlet baffle 30, the rotor core 20 and the air outlet baffle 40 are all in interference fit with the rotating shaft 10, and the interference fit amount of the air inlet baffle 30 and the air outlet baffle 40 is greater than the interference fit amount of the rotor core 20 and the rotating shaft 10, so that the air inlet baffle 30 and the air outlet baffle 40 firmly fix the rotor core 20 on the rotating shaft 10 along the axial direction and the circumferential direction of the rotating shaft 10.
In order to facilitate the cooling of the rotor 100, the air inlet baffle 30, the rotor core 20 and the air outlet baffle 40 are jointly penetrated and provided with a cooling channel a along the axial direction of the rotating shaft 10, when the rotor 100 rotates, external air enters the cooling channel a from the air inlet of the cooling channel a and flows to the outside from the air outlet of the cooling channel a, and thus the purpose of cooling the rotor 100 is achieved by the flowing of the air in the cooling channel a.
Referring to fig. 2-4, in an embodiment, an axial end surface of the air intake baffle 30 facing away from the rotor core 20 has a windward slot 31 communicating with the outside, the windward slot 31 includes a bottom wall 310 and a first wind shielding wall 311, the first wind shielding wall 311 protrudes from the bottom wall 319, and an air intake of the cooling channel a is formed on the bottom wall 310 of the windward slot 31.
Specifically, the air inlet of the cooling passage a and the first wind shielding wall 311 are arranged in the windward direction of the windward tank 31.
Thus, when the rotor 100 rotates at a high speed, the gas enters the windward tank 31 and flows along the windward direction of the windward tank 31, when the gas collides against the first wind shielding wall 311, the gas flow speed is reduced due to the blocking effect of the first wind shielding wall 311, the pressure in the area is increased, so that a pressure difference is formed between the gas and the air inlet of the cooling channel a, the gas easily flows into the cooling channel a under the action of the pressure difference, the flow rate of the cooling gas entering the cooling channel a is increased, the cooling effect of the rotor 100 is improved, and the excessive temperature rise of the rotor 100 during high-speed rotation is avoided.
Here, the rotation direction of the rotor 100 is opposite to the windward direction of the windward tank 31.
Specifically, the number of cooling channels a is at least two, and the at least two cooling channels a are uniformly spaced along the circumferential direction of the rotating shaft 10, and the number of windward slots 31 corresponds to the number of cooling channels a one by one.
In one embodiment, the windward tank 31 is formed by removing material from an axial end surface of the air intake baffle 30. It should be understood that, in another embodiment, the windward tank 31 may be formed by surrounding a windward plate protruding from an axial end surface of the air intake baffle 30, which is not limited herein.
In one embodiment, along the radial direction of the rotating shaft 10, the cross-sectional area of the windward tank 31 is gradually increased from the air inlet end 312 to the end of the windward tank 31 having the first wind shielding wall 311.
With the above arrangement, when the cooling gas flows from the air inlet end 312 of the windward tank 31 to the first wind shielding wall 311, the sectional area along the radial direction of the rotating shaft 10 gradually increases, the flow velocity of the cooling gas at the first wind shielding wall 311 is slower than that at the air inlet end 312, and the pressure is increased, and at this time, the pressure difference between the windward tank 31 and the air inlet of the cooling channel a can be increased, so that the gas flows from the windward tank 31 to the cooling channel a.
In one embodiment, the air inlet 312, the air inlet in the cooling channel a and the first wind shielding wall 311 are disposed along the circumferential direction of the rotating shaft 10. This facilitates the cooling gas to enter the windward tank 31 from the air inlet end 312 and flow from the windward tank 31 into the cooling channel a.
Specifically, a circle is formed by taking the center of the air inlet baffle 30 as the center and taking the center of the air inlet of the cooling channel a as an end point of the circle, and the connection line between the center of the air inlet end 312 and the center of the first wind shielding wall 311 is a part of the circle.
In one embodiment, the wall valley of the bottom wall 310 of the windward tank 31 is disposed opposite to the air inlet of the cooling channel a, so as to ensure that the windward tank 31 has the largest cross-sectional area at the position communicated with the air inlet of the cooling channel a, so that the maximum pressure difference is formed at the position opposite to the cooling channel a, and the cooling air flows into the cooling channel a.
Specifically, to facilitate the flow of cooling gas within the windward tank 31, the bottom wall 310 of the windward tank 31 is provided with a smoothly transition arc shape.
In a specific embodiment, in order to achieve a better windward effect, the length of the windward groove 31 along the circumferential direction of the rotating shaft 10 is 3-5 times the inner diameter of the air inlet of the cooling channel a, and the width of the windward groove 31 at the position communicated with the air inlet of the cooling channel a is 2-3 times the inner diameter of the air inlet of the cooling channel a.
Referring to fig. 5-7, in one embodiment, the axial end surface of the air outlet baffle 40 facing away from the rotor core 20 is provided with a leeward protrusion 41 in a protruding manner, the leeward protrusion 41 surrounds the air outlet in the cooling channel a, the leeward protrusion 41 includes an air outlet end 411 communicating between the air outlet in the cooling channel a and the outside, the outer surface of the leeward protrusion 41 forms a second wind shielding wall 412, and the second wind shielding wall 412 and the air outlet end 411 are arranged along the windward direction of the leeward protrusion 41.
Specifically, the sectional area of the second wind shielding wall 412 in the radial direction of the rotary shaft 10 gradually decreases from the end of the leeward protrusion 41 communicating with the air outlet in the cooling channel a to the air outlet end 411.
Specifically, the number of leeward protrusions 41 is equal to the number of cooling channels a, and each leeward protrusion 41 is provided corresponding to one cooling channel a.
Thus, when the rotor 100 rotates at a high speed, when ambient air flows through the leeward protrusion 41, the second wind shielding wall 412 blocks, so that the flow rate of the cooling air facing away from the air outlet end 411 of the second wind shielding wall 412 increases, the pressure is smaller, and a pressure difference is formed between the air outlet of the cooling channel a and the air outlet end 411 of the leeward protrusion 41, so that the cooling air flows from the cooling channel a into the leeward protrusion 41 more easily, and flows out from the air outlet end 411 of the leeward protrusion 41.
If the pressure difference formed by the windward tank 31 of the air inlet baffle 30 and the air inlet of the cooling channel a is defined as the first pressure difference, and the pressure difference formed between the air outlet of the cooling channel a and the air outlet end 411 of the leeward protrusion 41 is defined as the second pressure difference, because the pressure in the whole cooling channel a is equal, the first pressure difference and the second pressure difference are overlapped, so that the air is more convenient to flow into the cooling channel a from the outside and flow out of the cooling channel a.
It should be noted that, the rotation direction of the rotor 100 is opposite to the windward direction of the leeward protrusion 41, that is, the windward direction of the windward slot 31 is the same as the windward direction of the leeward protrusion 41.
In one embodiment, an end of the leeward protrusion 41 communicating with the air outlet of the cooling channel a is disposed along the circumferential direction of the rotating shaft 10 with the air outlet end 411, so that the cooling air enters the leeward protrusion 41 from the air outlet of the cooling channel a and flows out from the air outlet end 411 of the leeward protrusion 41.
Specifically, a circle is formed by taking the center of the air outlet baffle 40 as the center and taking a point of the air outlet of the cooling channel a as a circle, and a connecting line of the center of one end of the leeward protrusion 41, which is communicated with the air outlet of the cooling channel a, and the center of the air outlet end 411 is a part of the circle.
In one embodiment, the wall peaks of the inner walls of the leeward protrusions 41 are disposed opposite to the cooling channel a, so that the portion of the leeward protrusions 41 opposite to the air outlet of the cooling channel a is ensured to have the largest cross-sectional area, so that the cooling gas flows from the cooling channel a into the leeward protrusions 41.
Specifically, the leeward protrusions 41 are provided in a drop shape, and the second wind shielding wall 412 is in a smoothly transitional arc shape, so that the wind shielding effect of the second wind shielding wall 412 is ensured.
In one embodiment, the leeward protrusion 41 is formed by milling and then welded to the air outlet baffle 40, or is formed by first welding and then milling the air outlet baffle 40.
It will be appreciated that, in another embodiment, in order to consider the versatility of the air inlet baffle 30 and the air outlet baffle 40, the air outlet baffle 40 is also arranged in the air inlet baffle 30, but the opening directions of the air outlet baffle 40 and the windward slot 31 of the air inlet baffle 30 are opposite.
An embodiment of the present invention further provides a rotor 100 included in the above motor.
The rotor 100 and the motor provided by the embodiment of the invention have the following beneficial effects:
1. the air inlet baffle 30 is provided with a windward tank 31, when the air collides against the first wind shielding wall 311 of the windward tank 31, the air flow speed is reduced, so that the area pressure is increased, at the moment, a first pressure difference is formed between the windward tank 31 and the air inlet of the cooling channel a, the cooling air is convenient to flow into the cooling channel a under the action of the first pressure difference, and the cooling effect of the rotor 100 is improved;
2. the air outlet baffle 40 is provided with a leeward protrusion 41, and when ambient air flows through the leeward protrusion 41, the ambient air is blocked by the second wind shielding wall 412 thereof, so that the flow rate of cooling air back to the air outlet end 411 of the second wind shielding wall 412 is faster, and the pressure is smaller, for example, a second pressure difference is formed between the outside of the air outlet of the cold air channel a, and the cooling air is convenient to flow out from the cooling channel a under the action of the second pressure difference, thereby further improving the cooling effect.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (10)
1. A rotor (100), characterized by comprising:
a rotating shaft (10);
the rotor iron core (20) is sleeved outside the rotating shaft (10); and
the air inlet baffle (30) and the air outlet baffle (40) are sleeved outside the rotating shaft (10) and respectively abutted to the two axial ends of the rotor core (20), and the air inlet baffle (30), the rotor core (20) and the air outlet baffle (40) are jointly penetrated and formed into a cooling channel (a) along the axial direction of the rotating shaft (10);
the air inlet baffle (30) is provided with an air inlet groove (31) communicated with the outside on the axial end face, which is away from the rotor core (20), of the air inlet baffle, the air inlet groove (31) comprises a bottom wall (310) and a first wind shielding wall (311) protruding out of the bottom wall (310), and an air inlet in the cooling channel (a) is formed in the bottom wall (310); the cooling channel (a) is characterized in that an air inlet and the first wind shielding wall (311) are arranged along the windward direction of the windward tank (31), the windward tank (31) comprises an air inlet end (312) opposite to the first wind shielding wall (311), the air inlet in the cooling channel (a) is positioned between the first wind shielding wall (311) and the air inlet end (312), the air inlet in the cooling channel (a) and the first wind shielding wall (311) are arranged along the circumferential direction of the rotating shaft (10).
2. The rotor (100) according to claim 1, wherein the windward slot (31) is formed by axial end face blanking of the air intake baffle (30).
3. The rotor (100) according to claim 1, wherein a cross-sectional area of the windward tank (31) in a radial direction of the rotation shaft (10) gradually increases from the air intake end (312) to an end of the windward tank (31) having the first wind shielding wall (311).
4. The rotor (100) according to claim 1, characterized in that the wall valleys of the bottom wall (310) of the windward tank (31) are arranged opposite to the air inlet in the cooling channel (a).
5. The rotor (100) of claim 1, wherein the bottom wall (310) of the windward tank (31) is smoothly transitioned arc-shaped.
6. The rotor (100) according to any one of claims 1-5, wherein the air outlet baffle (40) is provided with a leeward protrusion (41) facing away from an axial end face of the rotor core (20), the leeward protrusion (41) surrounds an air outlet in the cooling channel (a), the leeward protrusion (41) comprises an air outlet end (411) communicated between the air outlet in the cooling channel (a) and the outside, an outer surface of the leeward protrusion (41) forms a second wind shielding wall (412), and the second wind shielding wall (412) and the air outlet end (411) are arranged along a windward direction of the leeward protrusion (41);
the sectional area of the second wind shielding wall (412) along the radial direction of the rotating shaft (10) gradually decreases from one end of the leeward protrusion (41) communicated with the air outlet in the cooling channel (a) to the air outlet end (411).
7. The rotor (100) according to claim 6, wherein an end of the leeward protrusion (41) communicating with the air outlet in the cooling passage (a) is arranged with the air outlet end (411) along the circumferential direction of the rotating shaft (10).
8. The rotor (100) according to claim 6, wherein the wall peaks of the inner walls of the leeward protrusions (41) are arranged opposite to the air outlets in the cooling channels (a).
9. The rotor (100) of claim 6, wherein the leeward protrusions (41) are drop-shaped and the second wind shielding wall (412) is smoothly curved.
10. An electric machine comprising a stator and a rotor (100) according to any one of claims 1-9, said rotor (100) being rotatably journalled in said stator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811472653.4A CN109286257B (en) | 2018-12-04 | 2018-12-04 | Rotor and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811472653.4A CN109286257B (en) | 2018-12-04 | 2018-12-04 | Rotor and motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109286257A CN109286257A (en) | 2019-01-29 |
| CN109286257B true CN109286257B (en) | 2024-04-09 |
Family
ID=65174117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811472653.4A Active CN109286257B (en) | 2018-12-04 | 2018-12-04 | Rotor and motor |
Country Status (1)
| Country | Link |
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| CN (1) | CN109286257B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113014008A (en) * | 2021-02-07 | 2021-06-22 | 珠海格力电器股份有限公司 | Rotor structure, motor, converter and have its centrifuge |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0649211A2 (en) * | 1993-10-14 | 1995-04-19 | Matsushita Electric Industrial Co., Ltd. | Induction machine and method for manufacturing a rotor of the induction machine |
| JPH0865933A (en) * | 1994-08-11 | 1996-03-08 | Matsushita Electric Ind Co Ltd | Rotor core of motor |
| JP2009195089A (en) * | 2008-02-18 | 2009-08-27 | Toyota Industries Corp | Rotating electric machine |
| CN104821671A (en) * | 2015-05-19 | 2015-08-05 | 永济新时速电机电器有限责任公司 | Compact-type rotor structure with rotor wind path |
| CN207010526U (en) * | 2017-05-06 | 2018-02-13 | 山东峻齐电气有限公司 | A kind of magnetic actuator of efficient energy-saving |
| CN208986712U (en) * | 2018-12-04 | 2019-06-14 | 珠海格力电器股份有限公司 | Rotor and motor |
-
2018
- 2018-12-04 CN CN201811472653.4A patent/CN109286257B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0649211A2 (en) * | 1993-10-14 | 1995-04-19 | Matsushita Electric Industrial Co., Ltd. | Induction machine and method for manufacturing a rotor of the induction machine |
| JPH0865933A (en) * | 1994-08-11 | 1996-03-08 | Matsushita Electric Ind Co Ltd | Rotor core of motor |
| JP2009195089A (en) * | 2008-02-18 | 2009-08-27 | Toyota Industries Corp | Rotating electric machine |
| CN104821671A (en) * | 2015-05-19 | 2015-08-05 | 永济新时速电机电器有限责任公司 | Compact-type rotor structure with rotor wind path |
| CN207010526U (en) * | 2017-05-06 | 2018-02-13 | 山东峻齐电气有限公司 | A kind of magnetic actuator of efficient energy-saving |
| CN208986712U (en) * | 2018-12-04 | 2019-06-14 | 珠海格力电器股份有限公司 | Rotor and motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109286257A (en) | 2019-01-29 |
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