TW200304719A - Concentrated-roll-type motor and compressor with the same - Google Patents
Concentrated-roll-type motor and compressor with the same Download PDFInfo
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- TW200304719A TW200304719A TW092103483A TW92103483A TW200304719A TW 200304719 A TW200304719 A TW 200304719A TW 092103483 A TW092103483 A TW 092103483A TW 92103483 A TW92103483 A TW 92103483A TW 200304719 A TW200304719 A TW 200304719A
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- Prior art keywords
- rotor
- magnet
- stator
- motor
- concentrated
- Prior art date
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- 229910052761 rare earth metal Inorganic materials 0.000 claims description 7
- 150000002910 rare earth metals Chemical class 0.000 claims description 7
- 239000000126 substance Substances 0.000 claims description 6
- 239000000696 magnetic material Substances 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 abstract 1
- 238000004804 winding Methods 0.000 description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 230000004907 flux Effects 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 229910000976 Electrical steel Inorganic materials 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 230000002950 deficient Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 229910000938 samarium–cobalt magnet Inorganic materials 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000005347 demagnetization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
- 229910000859 α-Fe Inorganic materials 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
- H02K1/27—Rotor cores with permanent magnets
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/02—Details of the magnetic circuit characterised by the magnetic material
-
- 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
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/30—Structural association with control circuits or drive circuits
- H02K11/33—Drive circuits, e.g. power electronics
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
- Compressor (AREA)
- Brushless Motors (AREA)
Abstract
Description
200304719 五、發明說明（1) [發明所屬之技術領域] t發明是有關於集中卷式直流馬達及搭載此馬達之 壓縮機、冰箱或空調機。該集中卷式直流馬達以集中卷 式卷裝線圈而成的定子以及内藏磁石的棘 [先前技術] 于構成。 過去，在構成冰箱和空調機等的冷媒回路之壓縮機 中，力求小型化與能量利用效率的提高，為此，一直以 來人們都在試圖發明出一種在壓縮機中使用的小型且高 輸出的馬達。過去，普通的壓縮機馬達均為採用分佈卷 方式的無刷直流馬達，但是，近年來為了實現製程簡 化、小型化以及提高效率的目的，有人提出了集中卷式 無刷直流馬達。 圖6為集中卷式的無刷直流馬達1 〇 1的剖面圖。馬達 101由定子102和轉子103構成。定子1〇2由電磁鋼板（矽鋼 板）疊合而成的定子心線1 0 4和定子線圈（未圖示）構 成。定子心線1 〇 4上預先設有齒部1 0 6，齒部1 〇 6具有固定 的寬度，其兩邊設有沿轉子表面的齒部前端部位1 0 7。在 齒部1 0 6上利用溝槽部1 0 8的空間直接捲入定子心線，按 照集中直接捲入的方式形成定子1 0 2的磁極。 另外，轉子1 03為由電磁鋼板（矽鋼板）疊合而成的轉子心 線1 1 1構成。該轉子心線1 1 1的外周部設有4處切口，這些 切口之間形成4處突極狀磁極1 1 2，各磁極1 1 2中形成各自 的溝槽1 1 3，各溝槽1 1 3内組裝入永久性磁石1 1 4。 我們可以選用普通的肥粒鐵系磁石作為永久磁石200304719 V. Description of the invention (1) [Technical field to which the invention belongs] t The invention relates to a concentrated coil DC motor and a compressor, refrigerator or air conditioner equipped with the motor. This concentrated winding DC motor is composed of a stator made of concentrated winding coils and a spine with built-in magnets [prior art]. In the past, compressors that constitute refrigerant circuits such as refrigerators and air conditioners have sought to reduce size and improve energy efficiency. For this reason, people have been trying to invent a small, high-output compressor for use in compressors. motor. In the past, common compressor motors were brushless DC motors using a distributed coil method. However, in recent years, in order to simplify the process, reduce the size, and improve the efficiency, some people have proposed centralized brushless DC motors. FIG. 6 is a cross-sectional view of a concentrated-roller type brushless DC motor 101. The motor 101 is composed of a stator 102 and a rotor 103. The stator 102 is composed of a stator core wire 104 and a stator coil (not shown) formed by stacking electromagnetic steel plates (silicon steel plates). The stator core line 104 is provided with a tooth portion 106 in advance, and the tooth portion 106 has a fixed width, and a front end portion 107 of the tooth portion along the surface of the rotor is provided on both sides. On the tooth portion 106, the space of the groove portion 108 is directly wound into the stator core wire, and the magnetic poles of the stator 102 are formed by being directly wound in a concentrated manner. The rotor 103 is a rotor core 1 1 1 formed by stacking electromagnetic steel plates (silicon steel plates). The rotor core line 1 1 1 is provided with four cutouts in the outer peripheral portion, and four salient pole-shaped magnetic poles 1 1 2 are formed between the cutouts. Each magnetic pole 1 1 2 has its own groove 1 1 3 and each groove 1 1 3 into permanent magnets 1 1 4. We can use ordinary ferrite magnets as permanent magnets
10895pif ptd 第6頁 200304719 五、發明說明（2) 1 1 4，除此之外，為了達到馬達小型化的目的，我們還可 以選用一些BH積較大的磁石，也就是所謂的稀土類磁石 等。稀土類磁石包括：鈥、鐵、硼等構成的鈥磁石，釤 鈷系磁石等。除此之外，圖中。潤滑油分離板1 1 6，平衡 砝碼1 1 7，非磁性物質製成的端面構件1 1 8、1 1 9均以鉚釘 1 2 1固定形成一體。 [發明欲解決的課題] 如果在諸如單氣缸的旋轉壓縮機或交互壓縮機這類一個 回轉中負荷變動較大的壓縮機中使用集中卷式直流馬 達，那？就可能會產生隨轉矩變動的增大，震動、噪音同 時增大的問題。為了解決這類問題，有必要增加轉子心 線1 0 3的慣性。正因為如此，應該擴大轉子心線1 1 1的積 厚，並擴大圖6所示的定子心線1 0 6的積厚，並且使永久 性磁石1 1 4的長度與轉子心線1 1 1的積厚相等，但是如果 將定子心線1 0 6以及永久性磁石11 4的長度擴大到超過所 需要的範圍的程度，那？，將會引起馬達性能的降低以及 製造成本的提高等問題。 其次，不改變圖7所示的永久性磁石114的長度，也 可以減少鐵損，但是，如果將定子1 1 6擴大到超過所需要 的範圍的程度，銅損便會增加，這同樣會引發馬達性能 降低的問題。特別值得指出的是，如果將圖7所示的永久 性磁石1 1 4的位置提高，使其位置保持在轉子1 0 3的上 部，那？由定子1 0 2釋放出來的磁通量將會在下側消失， 這樣容易造成磁性的減弱，進而引發馬達電流增大的問10895pif ptd Page 6 200304719 V. Description of the invention (2) 1 1 4 In addition, in order to achieve the purpose of miniaturization of the motor, we can also choose some magnets with a large BH product, so-called rare earth magnets, etc. . Rare earth magnets include: magnets composed of “, iron, boron, etc.”, samarium-cobalt magnets, and the like. Other than that, in the figure. The lubricating oil separation plate 1 1 6, the balance weight 1 1 7, and the end members 1 1 8 and 1 1 9 made of non-magnetic material are all fixed by rivets 1 2 1 to form a whole. [Problems to be Solved by the Invention] If a concentrated-winding DC motor is used in a compressor with a large load variation during rotation, such as a single-cylinder rotary compressor or an interactive compressor, what? There may be a problem that the vibration and noise increase at the same time as the torque variation increases. To solve such problems, it is necessary to increase the inertia of the rotor core 103. Because of this, the accumulated thickness of the rotor core 1 1 1 should be enlarged, and the accumulated thickness of the stator core 1 10 6 shown in FIG. 6 should be enlarged, and the length of the permanent magnet 1 1 4 and the rotor core 1 1 1 be increased. The product thickness is equal, but if the length of the stator core wire 106 and the permanent magnet 11 4 is enlarged to a degree beyond the required range? , Will cause problems such as reduced motor performance and increased manufacturing costs. Secondly, iron loss can be reduced without changing the length of the permanent magnet 114 shown in FIG. 7. However, if the stator 1 16 is enlarged to a degree beyond the required range, copper loss will increase, which will also cause Problems with reduced motor performance. It is particularly worth pointing out that if the position of the permanent magnet 1 1 4 shown in FIG. 7 is increased so that its position is maintained above the rotor 103, what? The magnetic flux released by the stator 102 will disappear on the lower side, which will easily cause the weakening of the magnetism, which will cause the problem of increased motor current.
10895pif ptd 第7頁 200304719 五、發明說明（3) 題。 另外，如果不改變圖8所示的定子1 0 6的積厚，而只是擴 大轉子心線1 1 1的積厚以及永久性磁石1 1 4的長度，在這 種情況下，如果將永久性磁石的長度擴大到超出所需要 範圍的程度，當然也同樣會引發製造成本上升、磁通量 集中、鐵損增加等問題。 [發明内容] 為解決習知的技術課題，本發明目的在於提供一種 集中卷式馬達及搭載此馬達的壓縮機，可增加轉子慣 性、降低震動，並降低製造成本。[解決課題的手段] 本發明由定子以及轉子構成集中卷式直流馬達。定 子由集中卷式把線圈卷裝入心線所構成。轉子係在定子 内回轉，並在轉子心線形成的溝槽内具備有磁石。轉子 心線的積厚比定子心線的積厚大，以提南回轉子慣性， 並降低震動，降低馬達電流的最大值，改善馬達性能。 且磁石的長度小於定子心線的積厚，並將其設置於該定 子心線的範圍之内，還可以抑制製造成本上升。 在上述的發明中，以稀土類磁石作為磁石，所以可 以一種小型的磁石達到充分確保性能之目的。 在上述的發明中，轉子心線的一個端面上安裝由非 磁性物質製成的端面構件，在這個端面構件上形成的突 起以進入到溝槽内並可定位磁石，根據端面構件的突起 來規定小於轉子心線積厚的磁石的組入位置，這樣可以 防止磁石組入位置不良，確保馬達性能。10895pif ptd Page 7 200304719 V. Description of Invention (3). In addition, if the thickness of the stator 1 06 shown in FIG. 8 is not changed, only the thickness of the rotor core 1 1 1 and the length of the permanent magnet 1 1 4 are enlarged. In this case, if the permanent The length of the magnet is extended beyond the required range, and of course, it will also cause problems such as rising manufacturing costs, concentration of magnetic flux, and increased iron loss. [Summary of the Invention] In order to solve a conventional technical problem, an object of the present invention is to provide a concentrated coil motor and a compressor equipped with the motor, which can increase rotor inertia, reduce vibration, and reduce manufacturing costs. [Means for Solving the Problems] The present invention includes a stator and a rotor constituted of a concentrated winding DC motor. The stator is composed of a coiled coil wound into a core wire. The rotor rotates inside the stator, and a magnet is provided in a groove formed by the rotor core. The product of the rotor core is larger than the product of the stator core to increase the inertia of the south rotor, reduce vibration, reduce the maximum motor current, and improve motor performance. In addition, the length of the magnet is smaller than the thickness of the stator core wire, and if it is set within the range of the stator core wire, the increase in manufacturing cost can also be suppressed. In the above-mentioned invention, since a rare earth magnet is used as the magnet, a small magnet can be used to achieve sufficient performance. In the above-mentioned invention, an end surface member made of a non-magnetic substance is mounted on one end surface of the rotor core, and a protrusion formed on this end surface member enters the groove and can locate the magnet, which is determined according to the protrusion of the end surface member. It is smaller than the position where the rotor core has a thick magnet, so that it can prevent the position of the magnet from being bad and ensure the performance of the motor.
10895pif. ptd 第8頁 200304719 五、發明說明（4) 在上述的發明中，轉子心線的兩個端面上分別安裝 由非磁性物質製成的端面構件，其中一個端面構件上形 成突起，以進入到溝槽内並可定位磁石。在磁石另外一 面的端面構件的溝槽中為了達到擋止該磁石的目的，在 轉子心線上形成擋止部，因此可以根據端面構件的突起 以及轉子心線上的擋止部來規定小於轉子心線積厚的磁 石的組入位置，進而可以達到防止磁石組入位置不良， 確保馬達性能之目的。特別值得提出的是，由於添加了 轉子心線的擋止部所以回轉子的重量也隨之增加，這樣 就可以達到提高轉子慣性的效果。另外，因？轉子心線的 擋止部既可以對磁石產生擋止作用，所以，其他端面上 的端面構件採用普通者即可，這樣也增強了普遍使用 性。 在上述的發明中，轉子心線的兩個端面上分別安裝 由非磁性物質製成的端面構件，兩個端面構件上分別形 成突起，以進入到溝槽内並定位磁石根據兩個端面構件 的突起來規定小於轉子心線積厚的磁石的組入位置，進 而可以達到防止磁石組入位置不良，確保馬達性能之目 的。特別值得提出的是，由於不需對轉子心線進行變 更，所以增加了轉子心線的普遍使用性。 在上述的發明中，利用整流器對上述各發明中的集 中卷式直流馬達進行轉矩控制時，因為上述馬達電流被 降低，運轉範圍擴大，這樣也可以利用轉矩控制來達到 抑制效率降低問題的目的。10895pif. Ptd Page 8 200304719 V. Description of the invention (4) In the above invention, the two end faces of the rotor core are respectively equipped with end members made of non-magnetic materials, and one of the end members is formed with a protrusion to enter Into the groove and position the magnet. In order to stop the magnet in the groove of the end face member on the other side of the magnet, a stopper is formed on the rotor core line, so it can be specified smaller than the rotor core line according to the protrusion of the end face member and the stopper portion on the rotor core line. The built-in position of the thick magnets can further prevent the defective position of the magnets and ensure the performance of the motor. It is particularly worth mentioning that the weight of the rotor is also increased due to the addition of the stop of the rotor core, so that the effect of increasing the rotor inertia can be achieved. Also, why? The stopper of the rotor core can both stop the magnet. Therefore, the ordinary end face members on the other end faces can be used, which also enhances the universal usability. In the above invention, the two end faces of the rotor core are respectively provided with end members made of a non-magnetic substance, and the two end members are respectively formed with protrusions to enter the groove and position the magnet according to the two end members. The protrusions define the position of the magnets that are smaller than the thickness of the rotor centerline, which can prevent the defective position of the magnets and ensure the performance of the motor. In particular, it is worth mentioning that since the rotor core does not need to be changed, the universal usability of the rotor core is increased. In the above-mentioned invention, when the rectifier is used to perform torque control on the centralized winding DC motor in each of the above-mentioned inventions, the current of the motor is reduced and the operating range is expanded. In this way, the problem of suppressing the reduction in efficiency can also be achieved by torque control purpose.
10895pif ptd 第9頁 200304719 五、發明說明（5) 本發明亦提供一種搭載上述集中卷式馬達的冰箱及 空調機的壓縮機，所以我們也可以製造出噪音低、振動 小的高品質、高效率的冰箱或者空調和。 為讓本發明之上述和其他目的、特徵、和優點能更 明顯易懂，下文特舉較佳實施例，並配合所附圖式，作 詳細說明如下： [實施方式] 以下部分參照本發明的附圖進行說明。為圖1為 適用本發明之一實施例的集中卷式無刷直流馬達1的平面 圖（線圈未圖示），圖2為圖1沿Α-0-Α的剖面圖，圖3為 圖2圓A部分的擴大圖。實施例中的馬達1為集中卷式無刷 直流馬達，其作為搭載於單缸旋轉式壓縮機或者往復式 壓縮機的驅動馬達，該單缸旋轉式壓縮機或者往復式壓 縮機可構成冰箱或空調機的冷媒回路。該集中卷式直流 馬達1係由定子3以及在定子3内轉動的轉子2構成，並且 利用整流器對轉矩進行控制。 該定子3由電磁鋼板（矽鋼板）疊合而成的定子心線4 以及卷裝入定子心線4，連同本圖未示的定子線圈所構 成。定子心線4上設有規定寬度的齒部6，該齒部6的前端 部分在兩邊被延長，沿著轉子2的表面形成齒部的前端部 位7。然後，在該齒部6上利用溝槽部8的空間，將定子線 圈（圖中未繪示）直接纏繞，利用集中直卷的方式形成 定子3的磁極。 如圖1所示，該齒部的前端部位7的一部分P 1 、P 2被10895pif ptd Page 9 200304719 V. Description of the invention (5) The present invention also provides a refrigerator and an air conditioner compressor equipped with the above-mentioned concentrated coil motor, so we can also produce high quality and high efficiency with low noise and small vibration. Refrigerator or air conditioner. In order to make the above and other objects, features, and advantages of the present invention more comprehensible, the following describes the preferred embodiments in detail with the accompanying drawings as follows: [Embodiment] The following section refers to the present invention. The drawings are for illustration. FIG. 1 is a plan view (a coil is not shown) of a concentrated-roller brushless DC motor 1 to which an embodiment of the present invention is applied. FIG. 2 is a cross-sectional view along A-0-A in FIG. 1, and FIG. 3 is a circle in FIG. 2. Enlarged view of Part A. The motor 1 in the embodiment is a concentrated-roller brushless DC motor, which is a drive motor mounted on a single-cylinder rotary compressor or a reciprocating compressor. The single-cylinder rotary compressor or reciprocating compressor may constitute a refrigerator or Refrigerant circuit of air conditioner. The concentrated winding DC motor 1 is composed of a stator 3 and a rotor 2 rotating in the stator 3, and a torque is controlled by a rectifier. The stator 3 is composed of a stator core wire 4 formed by stacking electromagnetic steel plates (silicon steel plates) and a stator core wire 4 wound together, and a stator coil not shown in the figure. The stator core 4 is provided with a tooth portion 6 having a predetermined width. The front end portion of the tooth portion 6 is extended on both sides, and a front end portion 7 of the tooth portion is formed along the surface of the rotor 2. Then, by using the space of the groove portion 8 on the tooth portion 6, a stator coil (not shown in the figure) is directly wound, and the magnetic poles of the stator 3 are formed by a concentrated straight winding method. As shown in FIG. 1, a part P1, P2 of the front-end | tip part 7 of this tooth part is
10895pif. ptd 第10頁 200304719 五、發明說明（6) 切掉除去（圖中PI 、P2雖各表示一處，但所有的齒部前 端部位7同樣被切掉）。切掉的部分只是轉子2回轉面對 的方向上的齒部前端部位7，例如P1單側切除即可，但是 為了在馬達組裝時便於在任何方向插入轉子2，也同樣將 齒部前端部位7的另一個方向P 2切掉。像這樣，即使將兩 側的齒部前端部位7切除掉，仍可忽略馬達的轉矩性能所 帶來的影響。 根據上述構成，因為在沿著轉子2的外表面的方向 上，同轉子2的距離未形成同樣的等間距，所以在齒部前 端部位7處，和轉子2 ’的距離只有切掉部分會變大，因 此，在切掉部分磁性阻力變大，在轉子2轉動方向上的齒 部前端部位7的位置上就不會產生磁通量的集中，因而磁 力平均分佈。 如果沒有這些切除的部分，在馬達1的轉子2的轉子 心線9的中心部位上，就會產生動力峰值增大，力的變化 幅度增大，單位時間的變動增加等問題，而這些又都是 馬達發生震動的原因。與此相反，當存在這些切除部分 時，峰值不會增大基本呈現平緩曲線，因而力的變化幅 度減小，單位時間内的變動減少，也就能夠達到對馬達1 的震動的控制。 結果，馬達1的轉子回轉角同轉矩構成關係的波形 圖，基本呈現平緩，高頻成分減少，轉矩變動降低，馬 達1回轉時的震動降低。 請同時參照圖2、圖3，該轉子2係由電磁鋼板（矽鋼10895pif. Ptd Page 10 200304719 V. Description of the invention (6) Cut off and remove (Although PI and P2 each show one place in the figure, all the front end parts 7 of the teeth are also cut off). The cut-off part is only the front end part 7 of the tooth in the direction in which the rotor 2 turns. For example, P1 can be cut off on one side. However, in order to facilitate the insertion of the rotor 2 in any direction when the motor is assembled, the front end part 7 of the tooth part is also similar. Cut in the other direction P 2. In this manner, even if the front end portions 7 of the teeth on both sides are cut away, the influence of the torque performance of the motor can be ignored. According to the above configuration, the distance along the outer surface of the rotor 2 is not the same as the distance from the rotor 2. Therefore, at the front end portion 7 of the teeth, the distance from the rotor 2 'is changed only by the cut-off portion. Therefore, the magnetic resistance becomes large at the cut-off portion, and no magnetic flux concentration occurs at the position of the front end portion 7 of the tooth portion in the rotation direction of the rotor 2, so that the magnetic force is evenly distributed. If there is no such cut-off part, at the center of the rotor core line 9 of the rotor 2 of the motor 1, there will be problems such as an increase in the peak value of power, an increase in the change in force, and an increase in the change in unit time. It is the cause of the motor vibration. On the contrary, when there are these cut-off parts, the peak value does not increase and basically shows a gentle curve, so the amplitude of the force change decreases, and the change in unit time decreases, so that the vibration of the motor 1 can be controlled. As a result, the waveform diagram of the relationship between the rotation angle of the rotor of the motor 1 and the torque is basically smooth, the high-frequency component is reduced, the torque fluctuation is reduced, and the vibration when the motor 1 rotates is reduced. Please refer to FIG. 2 and FIG. 3 at the same time. The rotor 2 is made of electromagnetic steel plate (silicon steel
10895pif ptd 第11頁 200304719 五、發明說明（7) 板）疊合而成的轉子心線9、轉子心線9上形成的溝槽1 1、 内組入永久性磁石1 2 ...、非磁性物質製成的端面構件 1 3、1 4、平衡砝碼1 6以及潤滑油分離板1 7所構成，並將 這些部分由鉚釘固定成為一體。 轉子2的轉子心線9的積厚大於定子3的定子心線4的 積厚（如圖3所示）。並且，永久性磁石1 2的長度小於定 子心線4的積厚。另外，在端面構件1 3、1 4上進入到溝槽 11内各自形成突起13A、14A，這些突起13A、14A (如圖3 所示）在永久性磁石1 2的上下面與永久性磁石相接觸， 保持永久性磁石在溝槽1 1内不動。 端面構件13、14的突起13A、14A的長度相等，這樣 在保證永久性磁石位於定子心線4的範圍内放置的，且還 能夠確保永久性磁石1 2的中心同轉子心線9以及定子心線 4的軸方向上的中心重合。按照以上構成，由定子3發出 的磁通量均勻地從永久性磁石1 2的上下兩側逃離，因此 減磁也變得困難了。 永久性磁石1 2通常選用普通的肥粒鐵系磁石，除此 之外，為了達到馬達小型化的目的，我們還可以選用一 些BH積較大的磁石，也就是所謂的稀土類磁石等。稀土 類磁石包括：鈥、鐵、硼等構成的鈥磁石，釤鈷系磁石 等。 由於轉子心線9的積厚大於定子心線4的積厚，所以 我們可以通過改變轉子2的慣性來降低震動，通過降低馬 達電流的最大值改善馬達性能。另外，使永久性磁石1 210895pif ptd Page 11 200304719 V. Description of the invention (7) Plate) The rotor core 9 formed by superposition, the groove 1 formed on the rotor core 9, 1. Permanent magnets 1 2 inside ... The end members 1 3, 1 4 made of a magnetic substance, the balance weight 16 and the lubricating oil separation plate 17 are formed, and these parts are fixed into one body by rivets. The thickness of the rotor core 9 of the rotor 2 is larger than the thickness of the stator core 4 of the stator 3 (as shown in FIG. 3). In addition, the length of the permanent magnet 12 is smaller than the thickness of the stator core 4. In addition, protrusions 13A and 14A are formed in the groove 11 on the end members 1 3 and 1 4 respectively, and these protrusions 13A and 14A (as shown in FIG. 3) form a permanent magnet on the upper and lower surfaces of the permanent magnet 12. Touch and keep the permanent magnets in the grooves 1 1. The lengths of the protrusions 13A and 14A of the end members 13 and 14 are equal, so that the permanent magnets are placed within the range of the stator core line 4, and the center of the permanent magnets 12 and the rotor core line 9 and the stator core are also ensured. The centers of the lines 4 in the axial direction coincide. According to the above configuration, the magnetic flux emitted from the stator 3 is uniformly escaped from the upper and lower sides of the permanent magnets 12, and therefore, it is difficult to reduce the magnetization. Permanent magnets 12 are usually made of ordinary ferrous iron magnets. In addition, in order to achieve the purpose of miniaturization of the motor, we can also choose some magnets with a large BH product, so-called rare earth magnets. Rare earth magnets include: magnets composed of “, iron, boron, etc.”, samarium-cobalt magnets, and the like. Because the accumulated thickness of the rotor core 9 is larger than the accumulated thickness of the stator core 4, we can reduce the vibration by changing the inertia of the rotor 2 and improve the motor performance by reducing the maximum motor current. Also make permanent magnets 1 2
10895pif ptd 第12頁 200304719 五、發明說明（8) 的 長度 小 於 定 子心線4的積厚 ，並且將其放置於定子心線 4的範圍之内 可以抑制製造成本的上漲c ) 利 用 上 述 的稀土 類 磁 石 代 替永久性磁 石 12 ，那？使用 較 小型 的 磁 石 也可以 確 保 足 夠 的性能。 轉 子2的端面構件1 3 ^ 1 4上的突起1 3A 、 1 4 A以進入到 溝 槽1 1 内 並 可 定位永 久 性 磁 石 1 2 。因此， 可 以根據端面 構 件1 3 14 的 突起1 3A 、1 4A 來 規定小於轉 子 心線9積厚的 永 久性 磁 石 12 的組入 位 置 9 這 樣可以防止 磁 石組入位置 不 良， 確 保 馬 達性能 〇 特 別 指 出 的是， 如 果 在 端 面構件1 3、 14 的突起1 3 A、 1 4 A的部分重量能夠增加的話 ，那？轉子2的慣性便會提 。另 外 這 時由於 轉 子9本身不需具備將永久性磁石1 2 保 持於 其 上 的 結構， 所 以 增 加 了轉子心線 的 普遍使用 性 〇 接 下 來 1 圖4和圖5 所 示 為 本發明的第 二 實施例。各 圖 中使 用 同 圖1至圖3 相 同 的 符 號，並且相 同 的符號代表 示 具相 同 的 機 能。在 這 個 實 施 例子中，一 邊丨 (上側）的端 面 構件1 3 上 形 成突起1 3A ，另邊（下側）的端面構件1 4上部 未 形成 突 起 〇 取而代 之 的 是 5 在位於永久 性 磁石1 2的端 面 構件1 4 之 溝 槽1 1部 份 的 轉 子 心線9上，於該溝槽1 1側處 形 成突 出 的 擋 止部9 A 0 擋 止 部9 A 的構成 如 圖 5所示，面對溝槽1 1的轉子9的 兩 個面 或 者 一 個面的 全 部 又 或 者是一部分 向 溝槽1 1側突 出 (例 如 可 以 縮小一 片 電 磁 鋼 板的溝槽内 尺 寸等）構成10895pif ptd Page 12 200304719 V. Description of the invention (8) The length of the invention is shorter than the thickness of the stator core wire 4 and placing it within the range of the stator core wire 4 can suppress the increase in manufacturing cost c) Use the above rare earths Magnets replace permanent magnets 12? Adequate performance can also be ensured by using smaller magnets. The protrusions 13A, 14A on the end face member 1 3 ^ 1 of the rotor 2 enter the groove 1 1 and can locate the permanent magnet 1 2. Therefore, according to the protrusions 1 3A and 1 4A of the end member 1 3 14, the position 9 of the permanent magnet 12 which is smaller than the rotor core 9's thickness can be specified. This can prevent the position of the magnet from being poor, and ensure the motor performance. The point is, if the weights of the protrusions 1 3 A and 1 4 A on the end members 1 3 and 14 can be increased? The inertia of the rotor 2 will be increased. In addition, at this time, since the rotor 9 itself does not need to have a structure to hold the permanent magnet 12 thereon, the universal usability of the rotor core is increased. Next, FIG. 4 and FIG. 5 show a second embodiment of the present invention. example. In each figure, the same symbols as in Figures 1 to 3 are used, and the same symbols represent the same functions. In this example, protrusions 1 3A are formed on the end member 1 3 on one side (upper side), and no protrusions are formed on the upper end member 1 4 on the other side (lower side). Instead, 5 is located on the permanent magnet 1 2 On the rotor core 9 of the groove 11 part of the end member 1 4, a protruding stopper 9 A is formed at the groove 11 side, as shown in FIG. 5. The two or one or both of the surfaces of the rotor 9 of the groove 11 are protruded toward the groove 11 side (for example, the size of the groove of an electromagnetic steel plate can be reduced).
10895pif ptd 第13頁 200304719 五、發明說明（9) 擋止部9 A。 在這種情況下，端面構件1 3的突起1 3 A的長度必須同 轉子心線9的端面構件1 4側面到擋止部9 A的尺寸相等，只 這樣才能保證永久性磁石位於定子心線4的範圍内放置 的，且還能夠確保永久性磁石1 2的中心同轉子心線9以及 定子心線4的軸方向上的中心重合。按照以上構成，由定 子3發出的磁通量均勻地從永久性磁石1 2的上下兩側逃 離，因此減磁也變得困難了。 在第二實施例中，在端面構件1 3的一方形成突起 1 3 A，該突起進入到溝槽1 1内，並可定位永久性磁石1 2， 且為了達到對位於端面構件1 4側的溝槽1 1中的永久性磁 石1 2的擋止作用，在轉子心線9上形成擋止部9 A。因此， 可以根據端面構件1 3的突起1 3A和轉子心線9的擋止部9A 來規定永久性磁石1 2的組入位置，該永久性磁石1 2的長 度小於轉子心線9的積厚。 這樣，可以防止永久性磁石1 2的組入位置不良，確 保馬達性能。特別指出的是，因為能夠使轉子心線9的擋 止部9 A的線圈2的重量增加，所以也會有慣性上升的效 果。另外，因為轉子心線9的擋止部9A既已可對磁石產生 擋止作用，所以，另邊的端面構件1 4採用普通者即可， 這樣也增強了普遍使用性。 在以上任何情況下都是利用整流器對集中卷式直流 馬達1進行轉矩控制時，因為上述馬達電流被降低，運轉 範圍擴大，這樣也可以利用轉矩控制來實現控制效率降10895pif ptd Page 13 200304719 V. Description of the invention (9) Stopper 9 A. In this case, the length of the protrusions 1 3 A of the end member 13 must be equal to the size of the side face of the end member 14 of the rotor core 9 to the stop 9 A. Only in this way can the permanent magnet be located on the stator core. The center of the permanent magnet 12 and the center of the rotor core line 9 and the stator core line 4 in the axial direction can be ensured. According to the above configuration, the magnetic flux emitted from the stator 3 uniformly escapes from the upper and lower sides of the permanent magnet 12, and therefore, the demagnetization becomes difficult. In the second embodiment, a protrusion 1 3 A is formed on one side of the end face member 13, the protrusion enters the groove 11, and the permanent magnet 12 can be positioned, and in order to reach the side facing the end member 14 The blocking action of the permanent magnet 12 in the groove 11 forms a blocking portion 9 A on the rotor core 9. Therefore, the position of the permanent magnet 12 can be determined according to the protrusion 13A of the end member 13 and the stopper 9A of the rotor core 9. The length of the permanent magnet 12 is less than the thickness of the rotor core 9. . In this way, it is possible to prevent the defective position of the permanent magnet 12 from being incorporated and to ensure the performance of the motor. In particular, since the weight of the coil 2 of the stopper 9A of the rotor core wire 9 can be increased, there is also an effect of increasing the inertia. In addition, since the stopper portion 9A of the rotor core wire 9 can already stop the magnet, the other end surface member 14 can be an ordinary one, which also enhances universal usability. In any of the above cases, when torque control is performed on the centralized winding DC motor 1 by using a rectifier, the above-mentioned motor current is reduced and the operating range is expanded. In this way, torque control can also be used to reduce the control efficiency.
10895pif ptd 第14頁 200304719 五、發明說明（ίο) 低的目的。 另外，上述集中卷式直流馬達1可搭載於冰箱或空調 機的壓縮機，所以我們也可以提供出噪音低、振動小的 南品質、1¾效率的冰箱或者空調機。 [發明之效果] 如上詳細說明所述，定子係由線圈以集中卷方式卷 裝入定子心線構成，轉子係在定子内回轉，且在轉子心 線上所形成的溝槽内具有磁石，且定子與轉子構成本發 明中的集中卷式直流馬達。由於該集中卷式直流馬達的 轉子心線積厚大於定子心線積厚，所以可以達到提高轉 子慣性、降低震動、降低馬達電流最大值以及改善馬達 性能的目的。另外，由於該馬達的磁石長度小於定子心 線的積厚’並且磁石被放置於定子心線的範圍之内，所 以也可以實現抑制製造成本升高的目的。 由於利用稀土類磁石代替了普通磁石，所以本發明 可能做到以一種小型的磁石達到充分確保性能的目的。 在上述的各個實施例的轉子心線的一個端面上附著 非磁性物質製成的端面構件，在這個端面構件上形成突 起以進入到溝槽内並可定位磁石。因此，可以根據端面 構件的突起來規定小於轉子心線積厚的磁石的組入位 置’這樣可以防止磁石組入位置不良’確保馬達性能。 若在轉子心線的兩個端面上分別安裝由非磁性物質 製成的端面構件，其中一個端面構件上形成突起，以進 入到溝槽内並可定位磁石。在磁石的另外一面的端面構10895pif ptd Page 14 200304719 V. Description of the invention (ίο) Low purpose. In addition, since the above-mentioned concentrated DC motor 1 can be mounted on a compressor of a refrigerator or an air conditioner, we can also provide a refrigerator or air conditioner with low noise, low vibration, and high quality. [Effects of the Invention] As described in detail above, the stator is formed by winding the coil into the stator core wire in a concentrated winding manner, the rotor is rotated in the stator, and a magnet is formed in a groove formed on the rotor core wire, and the stator The rotor and the rotor constitute a concentrated winding DC motor in the present invention. Since the rotor core line thickness of the concentrated winding DC motor is larger than the stator core line thickness, the purposes of increasing the rotor inertia, reducing vibration, reducing the maximum current of the motor, and improving the performance of the motor can be achieved. In addition, since the length of the magnet of the motor is smaller than the thickness of the stator core 'and the magnet is placed within the range of the stator core, the purpose of suppressing an increase in manufacturing cost can also be achieved. Since rare earth magnets are used instead of ordinary magnets, the present invention may achieve the purpose of sufficiently ensuring performance with a small magnet. An end surface member made of a non-magnetic substance is attached to one end surface of the rotor core wire of each of the above embodiments, and a protrusion is formed on this end surface member to enter the groove and position the magnet. Therefore, according to the protrusion of the end face member, the position of the magnets that is smaller than the thickness of the rotor core line can be specified. If end faces made of non-magnetic material are mounted on the two end faces of the rotor core, protrusions are formed on one of the end faces to enter the groove and position the magnet. End face structure on the other side of the magnet
10895pif ptd 第15頁 200304719 五、發明說明（11) 件的溝槽中為了達到擋止該磁石的目的，在轉子心線上 形成擋止部，因此可以根據端面構件的突起以及轉子心 線上的擋止部來規定小於轉子心線積厚的磁石的組入位 置，進而可以達到防止磁石組入位置不良，確保馬達性 能的目的。特別值得提出的是，由於添加了轉子心線的 擋止部所以轉子的重量也隨之增加，這樣就可以達到提 高轉子慣性的效果。另外，因為轉子心線的擋止部可以 對磁石產生擋止作用，所以，另邊的端面上的端面構件 採用普通者即可，這樣也增強了普遍使用性。 若轉子心線的兩個端面上分別安裝由非磁性物質製 成的端面構件，兩個端面構件上分別形成突起，以進入 到溝槽内並可定位磁石。因此，可以根據兩個端面構件 的突起來規定小於轉子心線積厚的磁石的組入位置，進 而可以實現防止磁石組入位置不良，確保馬達性能的目 的。特別值得提出的是，由於不需要再對轉子心線進行 變更，所以增加了轉子心線的普遍使用性。 在利用整流器對上述各發明中的集中卷式直流馬達 進行轉矩控制時，因為上述馬達電流被降低，運轉範圍 擴大，這樣也可以利用轉矩控制來實現控制效率降低的 目的。 由於上述各實施例集中卷式馬達均可搭載於冰箱或 空調機的壓縮機，所以我們也可以提供出噪音低、振動 小的高品質、高效率的冰箱或者空調機。 雖然本發明已以較佳實施例揭露如上，然其並非用10895pif ptd Page 15 200304719 V. Description of the invention (11) In order to achieve the purpose of blocking the magnet in the groove of the piece, a stop is formed on the rotor core, so the protrusion of the end face member and the stop on the rotor core can be used. The position of the magnets that is smaller than the rotor core line thickness is stipulated in detail, and the purpose of preventing the magnets from entering the wrong position and ensuring the performance of the motor can be achieved. In particular, it is worth mentioning that the weight of the rotor is also increased due to the addition of the stop portion of the rotor core, so that the effect of increasing the rotor inertia can be achieved. In addition, because the stopper portion of the rotor core can stop the magnet, it is sufficient to use an ordinary end face member on the other end face, which also enhances universal usability. If two end faces of the rotor core are respectively provided with end members made of a non-magnetic substance, protrusions are formed on the two end members to enter the grooves and position the magnets. Therefore, according to the protrusions of the two end surface members, it is possible to specify the magnet insertion position smaller than the rotor core line thickness, thereby preventing the magnet insertion position from being defective and ensuring the performance of the motor. In particular, it is worth mentioning that since the rotor core does not need to be changed any more, the universal usability of the rotor core is increased. When a rectifier is used to perform torque control on the centralized winding DC motor in each of the above-mentioned inventions, the current of the motor is reduced and the operating range is expanded. In this way, the purpose of reducing the control efficiency can also be achieved by torque control. Since the concentrated coil motor of each of the above embodiments can be mounted on a compressor of a refrigerator or an air conditioner, we can also provide a high-quality, high-efficiency refrigerator or air conditioner with low noise and low vibration. Although the present invention has been disclosed above in the preferred embodiment, it is not intended to be used.
10895pif ptd 第16頁 200304719 五、發明說明（12) 以限定本發明，任何熟習此技藝者，在不脫離本發明之 精神和範圍内，當可作些許之更動與潤飾，因此本發明 之保護範圍當視後附之申請專利範圍所界定者為準。10895pif ptd Page 16 200304719 V. Description of the invention (12) To limit the present invention, anyone skilled in the art can make some modifications and retouching without departing from the spirit and scope of the present invention, so the protection scope of the present invention It shall be subject to the definition in the appended patent application scope.
10895pif ptd 第17頁10895pif ptd Page 17
I 200304719 圖式簡單說明 [圖式簡单說明] 圖1為本發明之較佳實施例之一種集中卷式無刷直流馬達 的平面圖。 圖2為圖1沿A - 0 - A的剖面圖。 圖3為圖1中圓A部分的放大圖。 圖4為圖1中馬達另一實施例的剖面圖。 圖5為圖4中圓A部分的放大圖。 圖6為習知馬達的剖面圖。 圖7為另一款習知馬達的剖面圖。 圖8為另一款習知馬達的剖面圖。 [圖式標示說明] 1 、馬達 2、轉子 3、定子 4、定子心線 6、齒部 7、齒部前端部位 9、馬達心線 9 A、擋止部 1 1、溝槽部 1 2、永久性磁石 13、14、端面構件 13A、14A、突起I 200304719 Brief description of the drawings [Simplified description of the drawings] Fig. 1 is a plan view of a concentrated-roller type brushless DC motor according to a preferred embodiment of the present invention. FIG. 2 is a cross-sectional view of FIG. 1 along A-0-A. FIG. 3 is an enlarged view of a circle A portion in FIG. 1. FIG. 4 is a cross-sectional view of another embodiment of the motor in FIG. 1. FIG. 5 is an enlarged view of a circle A in FIG. 4. Fig. 6 is a sectional view of a conventional motor. Fig. 7 is a sectional view of another conventional motor. Fig. 8 is a sectional view of another conventional motor. [Explanation of diagrammatic symbols] 1, motor 2, rotor 3, stator 4, stator core wire 6, tooth part 7, tooth front end part 9, motor core wire 9 A, stop part 1 1, groove part 1 2, Permanent magnets 13, 14, end members 13A, 14A, protrusions
10895pif ptd 第18頁10895pif ptd Page 18
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002074796A JP3877620B2 (en) | 2002-03-18 | 2002-03-18 | Concentrated winding DC motor and compressor equipped with the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW200304719A true TW200304719A (en) | 2003-10-01 |
| TWI272753B TWI272753B (en) | 2007-02-01 |
Family
ID=28035326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW092103483A TWI272753B (en) | 2002-03-18 | 2003-02-20 | Concentrated-roll-type motor |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP3877620B2 (en) |
| KR (1) | KR100935508B1 (en) |
| CN (1) | CN100373751C (en) |
| TW (1) | TWI272753B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI647897B (en) * | 2016-08-31 | 2019-01-11 | 日商東芝股份有限公司 | Rotor and reluctance motor |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060035086A (en) | 2004-10-21 | 2006-04-26 | 엘지전자 주식회사 | Dish washer |
| KR100744521B1 (en) * | 2006-11-01 | 2007-08-01 | 엘지전자 주식회사 | Dish Washer |
| WO2009116572A1 (en) * | 2008-03-19 | 2009-09-24 | 三洋電機株式会社 | Permanent magnet synchronization motor |
| CN105191069B (en) * | 2013-04-01 | 2017-09-05 | 富士电机株式会社 | Permanent magnet embedded rotating electrical machine |
| WO2016203563A1 (en) | 2015-06-17 | 2016-12-22 | 三菱電機株式会社 | Permanent magnet embedded-type electric motor for compressor, compressor, and refrigeration cycle device |
| JP7023408B2 (en) | 2019-02-21 | 2022-02-21 | 三菱電機株式会社 | Motors, compressors and air conditioners |
| CN113424401A (en) * | 2019-02-22 | 2021-09-21 | 三菱电机株式会社 | Motor, compressor and air conditioner |
| JP2021175216A (en) * | 2020-04-21 | 2021-11-01 | 三菱電機株式会社 | Rotary electric machine |
| MX2024003255A (en) | 2021-09-16 | 2024-04-02 | Mitsubishi Electric Corp | Electric motor, compressor, and air conditioner. |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| SU1474805A1 (en) * | 1987-07-13 | 1989-04-23 | Всесоюзный Научно-Исследовательский, Проектно-Конструкторский И Технологический Институт Релестроения | Synchronous electric machine |
| JPH0617371U (en) * | 1992-07-31 | 1994-03-04 | マブチモーター株式会社 | Synchronous motor |
| KR100271365B1 (en) | 1998-06-15 | 2000-11-01 | 윤종용 | Electric motor |
| JP3609649B2 (en) * | 1999-06-29 | 2005-01-12 | 三洋電機株式会社 | Brushless DC motor and refrigerant compressor using this motor |
| JP4121673B2 (en) | 1999-07-16 | 2008-07-23 | 松下電器産業株式会社 | Permanent magnet synchronous motor |
| JP2001078415A (en) | 1999-09-09 | 2001-03-23 | Aichi Electric Co Ltd | Brushless motor |
| JP3403682B2 (en) | 1999-11-25 | 2003-05-06 | 三菱電機株式会社 | Recessed magnet rotor and forming jig |
-
2002
- 2002-03-18 JP JP2002074796A patent/JP3877620B2/en not_active Expired - Lifetime
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2003
- 2003-02-20 TW TW092103483A patent/TWI272753B/en not_active IP Right Cessation
- 2003-03-10 KR KR1020030014844A patent/KR100935508B1/en active IP Right Grant
- 2003-03-12 CN CNB031194834A patent/CN100373751C/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI647897B (en) * | 2016-08-31 | 2019-01-11 | 日商東芝股份有限公司 | Rotor and reluctance motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100373751C (en) | 2008-03-05 |
| KR100935508B1 (en) | 2010-01-06 |
| CN1445910A (en) | 2003-10-01 |
| JP2003274591A (en) | 2003-09-26 |
| JP3877620B2 (en) | 2007-02-07 |
| KR20030076286A (en) | 2003-09-26 |
| TWI272753B (en) | 2007-02-01 |
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