CN203180740U - Permanent magnet motor and ceiling fan applying same - Google Patents
Permanent magnet motor and ceiling fan applying same Download PDFInfo
- Publication number
- CN203180740U CN203180740U CN 201320157694 CN201320157694U CN203180740U CN 203180740 U CN203180740 U CN 203180740U CN 201320157694 CN201320157694 CN 201320157694 CN 201320157694 U CN201320157694 U CN 201320157694U CN 203180740 U CN203180740 U CN 203180740U
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- China
- Prior art keywords
- permanent magnet
- magnet motor
- thickness
- boots
- boots portion
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Links
- 241000883990 Flabellum Species 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 9
- 229910052782 aluminium Inorganic materials 0.000 description 9
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 230000009183 running Effects 0.000 description 7
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Abstract
A permanent magnet motor and a ceiling fan using the same are provided. The permanent magnet motor comprises an outer rotor and an inner stator. The outer rotor includes 8 × a magnetic poles. The inner stator is arranged in the outer rotor and is provided with 9 multiplied by a magnetic guide grooves. a is a positive integer equal to or greater than 2. The utility model provides a permanent magnet motor and applied this permanent magnet motor's ceiling fan can improve the asymmetric problem of magnetic force distribution.
Description
Technical field
The utility model relates to a kind of permanent magnet motor and uses its ceiling fan, and is particularly related to the ceiling fan that a kind of number of magnetic poles is less than the permanent magnet motor of magnetic conductance groove number and uses this permanent magnet motor.
Background technology
It is little that permanent magnet synchronous motor technology maturation development in recent years, its characteristics have high power density, high efficiency and a volume, replaces traditional induction motor gradually.Yet permanent magnet motor has the vibration problem because magnetic force distributes asymmetric in the running usually, and therefore, the running vibration that how to reduce permanent magnet motor is that this industry is made great efforts one of emphasis.
The utility model content
The ceiling fan that the purpose of this utility model is to provide a kind of permanent magnet motor and uses this permanent magnet motor can improve the magnetic force asymmetric problem that distributes.
For reaching above-mentioned purpose, the utility model provides a kind of permanent magnet motor, and it comprises:
One external rotor comprises 8 * a magnetic pole; And
One internal stator is located in this external rotor and is had 9 * a magnetic conductance groove;
Wherein, a is equal to or greater than 2 positive integer.
Above-mentioned permanent magnet motor, wherein this internal stator comprises a plurality of tooth portions and a plurality of boots portion, single this magnetic conductance groove of definition between adjacent two these tooth portions, and respectively this boots portion is connected in an end of this corresponding tooth portion.
Above-mentioned permanent magnet motor, wherein respectively this boots portion has an outside end face, and respectively the direction of the thickness of this boots portion from this end of this tooth portion of correspondence toward this outside end face is for decrescence.
Above-mentioned permanent magnet motor, wherein respectively there is one first thickness in this boots portion in this outboard end mask, and respectively the junction of this boots portion and this tooth portion has one second thickness, the ratio of this second thickness and this first thickness is between 1.5 to 8.5.
Above-mentioned permanent magnet motor is equidistant between this boots portion and this external rotor respectively wherein.
Above-mentioned permanent magnet motor, wherein this internal stator has a plurality of openings, and respectively this open communication is in this magnetic conductance groove of correspondence and between adjacent two these boots portions.
Above-mentioned permanent magnet motor, wherein respectively this boots portion has an outside end face, and respectively there is one first thickness in this boots portion in this outboard end mask, and the width of this corresponding opening and the ratio of this first thickness are greater than 1.5.
For reaching above-mentioned purpose, the utility model does not provide a kind of ceiling fan, and it comprises:
A plurality of flabellums;
One rotation axis is connected in this a plurality of flabellums; And
One permanent magnet motor drives this rotation axis and rotates this a plurality of flabellums, and comprises:
One external rotor comprises 8 * a magnetic pole; And
One internal stator is located in this external rotor and is had 9 * a magnetic conductance groove;
Wherein, a is equal to or greater than 2 positive integer.
Above-mentioned ceiling fan, wherein this internal stator comprises a plurality of tooth portions and a plurality of boots portion, single this magnetic conductance groove of definition between adjacent two these tooth portions, and respectively this boots portion is connected in an end of this corresponding tooth portion;
Wherein, respectively this boots portion has an outside end face, and respectively the direction of the thickness of this boots portion from this end of this tooth portion of correspondence toward this outside end face is for decrescence.
Above-mentioned ceiling fan, wherein respectively there is one first thickness in this boots portion in this outboard end mask, and respectively the junction of this boots portion and this tooth portion has one second thickness, the ratio of this second thickness and this first thickness is between 1.5 to 8.5.
Below in conjunction with the drawings and specific embodiments the utility model is described in detail, but not as to restriction of the present utility model.
Description of drawings
Fig. 1 illustrates the outside drawing according to the ceiling fan of the utility model one embodiment;
Fig. 2 illustrates the cutaway view of the permanent magnet motor of Fig. 1;
Fig. 3 illustrates the coil cutaway view of Fig. 2;
Fig. 4 illustrates the schematic diagram of the external rotor of Fig. 2.
Wherein, Reference numeral
100: ceiling fan
110: rotation axis
120: flabellum
130: permanent magnet motor
131: internal stator
131a: opening
131S: magnetic conductance groove
1311: tooth portion
1312: boots portion
1312s2: inner surface
1312s1: air-gap surface
1312e: outside end face
1313: one ends
132: external rotor
132': magnetite
132P: magnetic pole
132s: inner surface
1321: housing
133: coil
1331: aluminum steel
1332: insulating coating
G: air gap
T: thickness
T1: first thickness
T2: second thickness
W1: width
Embodiment
Below in conjunction with accompanying drawing structural principle of the present utility model and operation principle are done concrete description:
Please refer to Fig. 1, it illustrates the outside drawing according to the ceiling fan of the utility model one embodiment.Ceiling fan 100 comprises rotation axis 110, multi-disc flabellum 120 and permanent magnet motor 130.Rotation axis 110 is connected in flabellum 120.Permanent magnet motor 130 drives rotation axis 110 and rotates flabellum 120.
Please refer to Fig. 2, it illustrates the cutaway view of the permanent magnet motor of Fig. 1.Permanent magnet motor 130 comprises internal stator 131, external rotor 132 and coil 133.External rotor 131 comprises 8 * a magnetic pole 132P, and internal stator 131 is located in the external rotor 132 and is had 9 * a magnetic conductance groove 131S, and wherein a is equal to or greater than 2 positive integer.Quantity Matching by this routine magnetic pole 132P and magnetic conductance groove 131S can obtain the permanent magnet motor 130 that cogging torque is little and vibratory output is little.
When the least common multiple of magnetic pole 132P quantity and magnetic conductance groove 131S quantity (namely 8 * 9 * a) heal when big, expression permanent magnet motor 130 cogging torques littler (it is more smooth and easy turn round), but its volume but more greatly.When a equaled 2, the cogging torque of permanent magnet motor 130 was little, running is healed smooth and easy and its volume also is applicable to the ceiling fan design.
(be a) to equal 1, magnetic force can concentrate on the single direction of internal stator 131, and it is asymmetric to cause magnetic force to distribute, and produces vibrating noise when making permanent magnet motor 130 runnings when the greatest common factor of magnetic pole 132P quantity and magnetic conductance groove 131S quantity.In this example, because a is equal to or greater than 2, so the magnetic force distribution is almost symmetrical, can improve or avoid vibrating noise.
When magnetic pole 132P quantity the more the time, operating frequency is higher, therefore causes running efficiency lower.With respect to the radix of magnetic pole 132P greater than for the radix of magnetic conductance groove 131S, because the radix (being numerical value 8) of this routine magnetic pole 132P is less than the radix (being numerical value 9) of magnetic conductance groove 131S, so (namely 8 * a) can not increase because of the value of a and significantly increase the sum of magnetic pole 132P, therefore magnetic pole 132P sum can be controlled in an expection or the preset range, and avoids or improve the problem of running efficiency reduction.
Each boots portion 1312 has outside end face 1312e, the thickness T of each boots portion 1312 from an end 1313 of the tooth portion 1311 of correspondence outward side end face 1312e direction system decrescence.Boots portion 1312 has first thickness T 1 in outside end face 1312e, and the junction of boots portion 1312 and tooth portion 1311 has second thickness T 2.Heal when big when the ratio (T1/T2) of second thickness T 2 and first thickness T 1, the end of boots portion 1312 is thinner relatively, cause boots portion 1312 intensity to descend so on the contrary, and the absorbable magnetic line of force also can reduce; When the ratio of second thickness T 2 and first thickness T 1 more hour, boots portion 1312 relative with the junction of tooth portion 1311 thinner (namely second thickness T 2 is thinner) blocks the magnetic line of force toward internal stator 131 so on the contrary, makes the torque reduction of turning round.In this example, because the ratio of second thickness T 2 and first thickness T 1 between 1.5 to 8.5, therefore can be taken into account effective absorption of boots portion 1312 intensity and the magnetic line of force.
By following table one as can be known, when ratio W1/T1 bigger (width W 1 of first thickness T, the 1 relative opening 131a of expression boots portion 1312 is thinner), average torque T is bigger and torque ripple Tr is littler, and the performance boost of permanent magnet motor 130 and vibration are reduced.
Table one
| First thickness T 1 (millimeter) | 0.6 | 1.2 | 1.8 | 2.4 | 3 |
| Ratio (W1/T1) | 3.5 | 1.75 | 1.166 | 0.875 | 0.7 |
| Average torque T (Nm) | 1.1033 | 1.098 | 1.092 | 1.085 | 1.077 |
| Torque ripple Tr (%) | 2.38 | 2.7 | 2.98 | 3.24 | 3.46 |
Please refer to Fig. 3, it illustrates the coil cutaway view of Fig. 2.Coil 133 around the 1311(of tooth portion of internal stator 131 as shown in Figure 2).Coil 133 comprises aluminum steel 1331 and insulating coating 1332, and wherein insulating coating 1332 coats aluminum steel 1331.Compared to copper cash, though the resistance coefficient of aluminum steel 1331 is more right as long as increase the line footpath of aluminum steel 1331 than copper cash height, still can design the resistance value of expection.In one example, can adopt line directly is the aluminum steel 1331 of 0.4 millimeter standard specification, and under this design, the sectional area of aluminum steel 1331 increases by 77%, and resistance reduces by 20% than the copper cash in 0.3 millimeter in line footpath on the contrary, so moyor is better.In addition, compared to copper, aluminium weight is lighter, therefore adopts aluminum steel 1331 also can reduce the weight of permanent magnet motor 130.
Please refer to Fig. 4, it illustrates the schematic diagram of the external rotor of Fig. 2.8 * a magnetic pole 132P can be formed at earlier on n the magnetite 132 ' in advance, and wherein n is the positive integer greater than 2; Then, as long as paste this n sheet magnetite 132 ' in the housing 1321(of external rotor 132 Fig. 2) inner surface 132s(Fig. 2) go up and can finish the configuration of all magnetic pole 132P, and do not need the configured number of the individual magnetic pole 132P(n of individual configuration 8 * a to be less than the configured number of 8 * a).In addition, when 8 * a/n number of magnetic poles is even number, pasting magnetite 132 ' in surperficial 132s(Fig. 2 of external rotor 132) time, can not need differentiate N or the S utmost point of magnetite 132 ', and directly be pasted on the surperficial 132s of external rotor 132.
Comprehensively above-mentioned, compared to traditional induction motor, but the permanent magnet motor 130 of the utility model embodiment can be saved 60～80% power consumption and reduced volume more than 40%.Though above-mentioned to answer the product of permanent magnet motor 130 be to be example with the ceiling fan, right the utility model embodiment is not limited thereto.In another example, that permanent magnet motor 130 can be applicable to is little, in and large-scale household electrical appliances, as washing machine.
Certainly; the utility model also can have other various embodiments; under the situation that does not deviate from the utility model spirit and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the utility model, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the utility model.
Claims (10)
1. a permanent magnet motor is characterized in that, comprising:
One external rotor comprises 8 * a magnetic pole; And
One internal stator is located in this external rotor and is had 9 * a magnetic conductance groove;
Wherein, a is equal to or greater than 2 positive integer.
2. permanent magnet motor according to claim 1 is characterized in that, this internal stator comprises a plurality of tooth portions and a plurality of boots portion, single this magnetic conductance groove of definition between adjacent two these tooth portions, and respectively this boots portion is connected in an end of this corresponding tooth portion.
3. permanent magnet motor according to claim 2 is characterized in that, respectively this boots portion has an outside end face, and respectively the direction of the thickness of this boots portion from this end of this tooth portion of correspondence toward this outside end face is for decrescence.
4. permanent magnet motor according to claim 3, it is characterized in that, respectively there is one first thickness in this boots portion in this outboard end mask, and respectively the junction of this boots portion and this tooth portion has one second thickness, and the ratio of this second thickness and this first thickness is between 1.5 to 8.5.
5. permanent magnet motor according to claim 2 is characterized in that, is equidistant between this boots portion and this external rotor respectively.
6. permanent magnet motor according to claim 2 is characterized in that, this internal stator has a plurality of openings, and respectively this open communication is in this magnetic conductance groove of correspondence and between adjacent two these boots portions.
7. permanent magnet motor according to claim 6 is characterized in that, respectively this boots portion has an outside end face, and respectively there is one first thickness in this boots portion in this outboard end mask, and the width of this corresponding opening and the ratio of this first thickness are greater than 1.5.
8. a ceiling fan is characterized in that, comprising:
A plurality of flabellums;
One rotation axis is connected in this a plurality of flabellums; And
One permanent magnet motor drives this rotation axis and rotates this a plurality of flabellums, and comprises:
One external rotor comprises 8 * a magnetic pole; And
One internal stator is located in this external rotor and is had 9 * a magnetic conductance groove;
Wherein, a is equal to or greater than 2 positive integer.
9. ceiling fan according to claim 8 is characterized in that, this internal stator comprises a plurality of tooth portions and a plurality of boots portion, single this magnetic conductance groove of definition between adjacent two these tooth portions, and respectively this boots portion is connected in an end of this corresponding tooth portion;
Wherein, respectively this boots portion has an outside end face, and respectively the direction of the thickness of this boots portion from this end of this tooth portion of correspondence toward this outside end face is for decrescence.
10. ceiling fan according to claim 9, it is characterized in that, respectively there is one first thickness in this boots portion in this outboard end mask, and respectively the junction of this boots portion and this tooth portion has one second thickness, and the ratio of this second thickness and this first thickness is between 1.5 to 8.5.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW102203255U TWM461248U (en) | 2013-02-20 | 2013-02-20 | Permanent-magnet motor and ceiling fan using the same |
| TW102203255 | 2013-02-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203180740U true CN203180740U (en) | 2013-09-04 |
Family
ID=49077395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320157694 Expired - Lifetime CN203180740U (en) | 2013-02-20 | 2013-04-01 | Permanent magnet motor and ceiling fan applying same |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN203180740U (en) |
| TW (1) | TWM461248U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106855059A (en) * | 2015-12-08 | 2017-06-16 | 宁波菲仕工业设计有限公司 | It is straight to drive ceiling fan |
| CN107276259A (en) * | 2017-06-27 | 2017-10-20 | 广东美的环境电器制造有限公司 | Stator, the method for winding of stator, outer rotor load motor and ceiling fan |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI525962B (en) | 2014-12-05 | 2016-03-11 | 財團法人工業技術研究院 | Outer-rotor permanent magnet brushless motor |
| TWI596866B (en) | 2016-12-02 | 2017-08-21 | 財團法人工業技術研究院 | External rotor motor |
-
2013
- 2013-02-20 TW TW102203255U patent/TWM461248U/en not_active IP Right Cessation
- 2013-04-01 CN CN 201320157694 patent/CN203180740U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106855059A (en) * | 2015-12-08 | 2017-06-16 | 宁波菲仕工业设计有限公司 | It is straight to drive ceiling fan |
| CN107276259A (en) * | 2017-06-27 | 2017-10-20 | 广东美的环境电器制造有限公司 | Stator, the method for winding of stator, outer rotor load motor and ceiling fan |
Also Published As
| Publication number | Publication date |
|---|---|
| TWM461248U (en) | 2013-09-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130904 |