200928099 九、發明說明： 【發明所屬之技術領域】 用於液冷式散熱系統 本發明涉及一種泵，特別係指一種 之泵。 【先前技術】 般帶有熱源之電子產品，约雷蓉古與扁 . 巧而要有散熱之系統，如 設置於電腦内部之中央處理器（CPU)。由於中央處理器工作 ©時會發熱，故必須於中央處理器上設置散熱裝置，以防止 其發生過熱問題。 在習知之電腦CPU散熱裝置中，液冷式散熱系統有逐 漸被廣泛應用之趨勢，為可使冷卻液于液冷式散熱系統内 部產生循環，一般會設置一泵，以該泵對冷卻液產生推力， 使冷卻液產生循環，從而使冷卻液帶走CPU之熱量。傳統 之泵一般包括一殼體及容置於殼體内之一定子及一轉子。 ❹該轉子具有一環繞所述定子之磁體。該磁體所產生之穩恒 磁場s:定子所產生之交變磁場之作用而旋轉，從而帶動轉 子擾動冷卻液，促使其流動。 惟’該種傳統之泵之轉子僅有一磁體圍繞定子，該定 子所產生之交變磁場中僅有位於定子外侧之部分才能作用 於轉子之磁體，而位於定子内側之部分則由於沒有起任何 作用而被閒置，致使這部分内侧之磁場被浪費掉。由於I 之轉子轉速與磁場強度成一正比關係，這部分浪費掉之磁 場將致使泵之定子之磁能利用不充分，進而影響泵之工作 6 200928099 效率。 *【發明内容】 有蓉於此，實有必要提供—種磁能利用率較高之果， 其轉子具有雙磁體之構造。 一縣，用於液冷散熱系統，其包括-殼體及收容於 设體内之-轉子及-定子，該轉子包括一環繞定子之外磁 體，該轉子還包括-被定子所環繞之内磁體，該殼體内形 〇成一將定子及轉子隔開之隔板。 與習知技術相比，本發明之泵之轉子還具有一内磁體 設置於所述定子内侧，其與定子所產生之内磁場相互作用 而與外磁體共同帶動轉子旋轉。由此，定子所產生之内外 磁場均可㈣充分利Hu作效率亦減地得到提升。 【實施方式】 如圖1-2所不，本發明之泵用於液冷散熱系統（圖未示） ❹内而對電子元件（圖未示）散熱，其包括一底座1〇、一置 於底座1〇内之墊片70、一固定於該底座1〇上之殼體2〇、 —夾置於該殼體20及底座10間之轉子4〇、一收容於殼體 20内之定子30、-安裝於殼體2〇内且電性連接所述定子 30之電路板5G及-固定至殼體2Q上且覆蓋住電路板％ 之蓋板60。 所述底座10大致呈方形，其中部區域開設一直徑較大 之圓形開口 12，其四角區域分別向上形成四支腳（圖未 標），供螺絲（圖未示）穿設。所述開口 12之内壁之中部 200928099 水平向内凸伸出一環狀凸條18， 開口 12分隔成上下、…又墊片7〇’以將該 底座,。之一側且連通該二二成於所述 未示)穿過其内孔⑽輸入泵内乂 所述底座H)之同側且連通該開口 12之下部， 體自泵内穿過其内孔160向外輸出。 、冬作抓 所述墊片70呈圓形’其中部開設—供工作流體穿過之 圓形穿孔700。該塾片7G抵靠於所述底座1()之凸條^上 (如圖4)，其將自進水口 14流入開口 12上部之工作流體 與穿過其穿孔700而流至開口 12下部之工作流體分開，避 免一者相互干擾而產生|流。 請一併參閱圖4 ’所述殼體20呈方形，其通過螺絲固 疋於底座10上，其中部開設一圓形之通口（圖.未授）。一 隔板2000將該通口分隔出一第一腔室22及一第二腔室 2002。該第一腔室22位於第二腔室2002上方，且二者互 0不相通’以防止工作流體自第二腔室2002渗入第一腔室 22。所述第一腔室22呈環狀，其開口方向朝上以容置所述 定子30。所述殼體20被第一腔室22所環繞之中部區域形 成一圓形之轴管220 ’所述殼體20環繞第一腔室22之邊緣 區域則形成一側壁（圖未標），其中該軸管220之高度略 低於所述侧壁之高度（如圖4)。所述第二腔室2002之開 口朝下，其用於容置轉子40之相應結構。請參閱圖4，該 第二腔室2002包括一圓形之第一凹部24、一環繞該第一凹 部24之環形之第二凹部26及一環繞該第二凹部26之環形 200928099 -之第三凹部28。所述第一凹部24開設於所述軸管220之中 •部，所述第二凹部26開設於所述軸管220内且鄰近軸管220 之外壁面，所述第三凹部28則開設於所述側壁内且鄰近側 壁之内壁面。所述第一凹部24、第二凹部26及第三凹部 28之深度相等，且大於所述第一腔室22之深度。所述側壁 之底面開設一圍繞所述第二腔室2002之環狀凹槽（圖未 標），一彈性之環狀墊圈80嵌入該環狀凹槽内且抵靠於底 座10之頂面，以使泵具有一較佳之液體密封效果。所述側 ®壁之一側開設一與進水口 14及出水口 16對應之缺口 222, 該缺口 222與所述第一腔室22連通，以供電路板50之導 線（圖未標）穿設。 請參閱圖2至圖5,所述轉子40夾置於所述殼體20 與底座10之間，其包括一葉輪組（圖未標）、一插設於葉 輪組中部之轉軸408、一結合至該葉輪組上且環繞轉軸408 之内輪轂404及一自葉輪組之邊緣垂直向上延伸且環繞内 ❹輪轂404之外輪轂406。所述葉輪組進一步包括一圓板（圖 未標）及複數結合至該圓板底部之葉片402。該葉輪組收容 於所述底座10之開口 12之上部内（如圖4)，其通過葉片 402之旋轉而擾動工作流體致使其向下流動。所述轉轴408 垂直於所述圓板，其通過一轴承46容置於所述殼體20之 第一凹部24内（如圖4)，從而對轉子40軸向定位。所述 内輪轂404容置於所述殼體20之第二凹部26内，所述外 輪轂406容置於殼體20之第三凹部28内（如圖4)，兩者 均包括二環形之夾板（圖未標），其中内輪轂404之二夹 200928099 板同軸且共同夾置一環狀之内永磁體42於其内，外輪轂 -406之二夾板亦同軸且共同夾置一環狀之外永磁體44於其 内。如圖5所示，所述外磁體44及内磁體42均具有複數 均勻分佈且相互交替之N極422、440及S極420、442， 其中外磁體44之磁極440、442與内礴體42之極性相反之 磁極420、422——正對，即外磁體44之N極440正對於 内磁體42之S極420，外磁體44之S極442正對於内磁體 42之N極422,由此，當定子30通電之後，其所產生之内 ® 外交變磁場可分別作用於内磁體42及外磁體44上，從而 共同推動轉子40旋轉。 所述定子30容置於所述外殼20之第一腔室22内，其 與電路板50電性連接，以受電流之激發而產生交變磁場。 所述定子30包括複數相互堆疊之平行之軛片（圖未標）， 其中每一軛片均包括一環狀之外框32、複數自外框32輻射 向内形成之齒部34 (如圖3)及複數分別結合至該等齒部 0 34末端之定位部38。複數激磁線圈36分別纏繞於所述齒 . 部34上，以磁化輛片使其產生強磁場。所述定子30之齒 部34之數量與所述内磁體42或外磁體44之磁極420、 422、440、444數量相等，每一齒部34在線圈36通電之後 被磁化出二極性相反之磁極（如圖5)，其中位於齒部34 外側之一磁極所產生之磁場作用於外磁體44之相對磁極 440、442上，從而對外磁體44產生一垂直於紙面方向之外 磁矩；位於齒部34内側之另一磁極所產生之磁場則作用於 内磁體42之相對磁極420、422上，其對内磁體42產生一 200928099 與上述外磁矩同向之内磁矩。由於該内磁矩與該外磁矩之 -方向相同，二者共同驅動轉子40轉動，使其獲得一較高之 轉速。所述定位部38之寬度大於所述齒部34之寬度，以 更加均勻地將磁場分佈於定子30内部。 所述電路板50大致呈圓形，其中部開設一圓孔（圖未 標）’其一側具有與外部電路（圖未示）連通之導線。所 述電路板50站置於所述定子30上（如圖4)，其導線穿過 所述殼體20之缺口 222，其圓孔則被所述殼體2〇之軸管 ❹220插設而使電路板50套置於軸管22〇上，此時電路板％ 之頂面與轴管220之頂面齊平（如圖4)。 所述蓋板60呈方形，其通過螺絲固定至殼體2〇上而 與所述破體20及底座1〇形成如圖1所示之整體。該蓋板 60覆蓋住所述電路板50’以保護位於殼體2〇内部之元件。 當電路板50通電之後，其將電流輸送至定子3〇内而 激發定子30，使其内外兩側均產生交變磁場。由於轉子4〇 〇之内磁體42及外磁體44分別置於定子3〇之内外兩側，二 者可分別受定子30所產生之内外磁場所驅動而沿同一方向 轉動，從而共同帶動轉子4〇旋轉。因此，相比于傳統之泵， 本發明之泵之定子30所產生之磁場可充分地得到利用，其 可^時驅動轉子40之内磁體42及外磁體44而使轉子4〇 獲付較南之轉速，進而使泵之工作效率得到提升。 如圖6所示，可以理解地，為了克服傳統之栗中存在 之由於設計不良而導致轉子4〇無法自啟動之“死點，，現象， 11 200928099 可將内磁體42與外磁體44之磁極420、422、440、442相 互錯開一定之角度，使二者所產生之磁場處於非正對狀態。 還可以理解地，本發明之雙磁體之設計不僅局限于使 用於泵内，還可引申至其他相關之領域當中，如風扇或發 電機内。 綜上所述，本發明確已符合發明專利之要件，遂依法 提出專利申請。惟，以上所述者僅為本發明之較佳實施例， 自不能以此限制本案之申請專利範圍。舉凡熟悉本案技藝 之人士援依本發明之精神所作之等效修飾或變化，皆應涵 蓋於以下申請專利範圍内。 【圖式簡單說明】 圖1係本發明實施例之泵之組裝圖。 圖2係圖1中之分解圖。 圖3係圖1中之泵隱去電路板及蓋板之視圖。 圖4係圖1之縱向剖面圖。 圖5係圖1之工作原理圖。 圖6係本發明另一實施例之泵之工作原理圖。 主要元件符號說明】 底座 10 開口 12 進水口 14 内孑L 140、160 出水口 16 凸條 18 殼體 20 隔板 2000 第二腔室 2002 第一腔室 22 12 200928099 軸管 220 缺口 222 第一凹部 24 第二凹部 26 第三凹部 28 定子 30 外框 32 齒部 34 線圈 36 定位部 38 轉子 40 葉片 402 内輪轂 404 外輪轂 406 轉軸 408 内磁體 42 S極 420、442N 極 422 > 440 外磁體 44 軸承 46 電路板 50 蓋板 60 墊片 70 穿孔 700 墊圈 80 ❹ 13BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pump, and more particularly to a pump. [Prior Art] An electronic product with a heat source, about Rayong ancient and flat. A system that has a heat dissipation, such as a central processing unit (CPU) installed inside a computer. Since the CPU will generate heat when it is working, it must be placed on the central processing unit to prevent overheating. In the conventional computer CPU heat sink, the liquid-cooled heat-dissipating system has been widely used. In order to make the coolant flow inside the liquid-cooled heat-dissipating system, a pump is generally provided to generate the coolant. The thrust causes the coolant to circulate, causing the coolant to carry away the heat of the CPU. A conventional pump generally includes a housing and a stator and a rotor housed in the housing. The rotor has a magnet that surrounds the stator. The steady magnetic field s generated by the magnet rotates by the action of the alternating magnetic field generated by the stator, thereby causing the rotor to disturb the coolant and cause it to flow. However, the rotor of the conventional pump has only one magnet surrounding the stator. Only the part of the alternating magnetic field generated by the stator acts on the magnet outside the stator, and the part located inside the stator does not play any role. Being idle, the magnetic field inside this part is wasted. Since the rotor speed of I is proportional to the strength of the magnetic field, this partially wasted magnetic field will cause the magnetic energy of the stator of the pump to be insufficiently utilized, thereby affecting the efficiency of the pump. * [Invention content] It is necessary to provide a kind of high magnetic energy utilization rate, and the rotor has a double magnet structure. a county for a liquid cooling system, comprising: a housing and a rotor and a stator housed in the housing, the rotor including a magnet surrounding the stator, the rotor further comprising an inner magnet surrounded by the stator The casing is shaped into a partition separating the stator and the rotor. In contrast to the prior art, the rotor of the pump of the present invention further has an inner magnet disposed on the inner side of the stator, which interacts with an internal magnetic field generated by the stator to rotate the rotor together with the outer magnet. As a result, the internal and external magnetic fields generated by the stator can be improved (4). [Embodiment] As shown in Figure 1-2, the pump of the present invention is used in a liquid cooling system (not shown) to dissipate heat from an electronic component (not shown), which includes a base 1 and a a gasket 70 in the base 1 , a casing 2 固定 fixed to the base 1 , a rotor 4 夹 between the casing 20 and the base 10 , and a stator 30 housed in the casing 20 And a circuit board 5G mounted in the casing 2 and electrically connected to the stator 30 and a cover 60 fixed to the casing 2Q and covering the circuit board %. The base 10 has a substantially square shape, and a circular opening 12 having a larger diameter is formed in the middle portion thereof, and four corner portions are respectively formed upwardly to form four legs (not shown) for screwing (not shown). The inner portion of the inner wall of the opening 12 protrudes horizontally inwardly from an annular rib 18, and the opening 12 is partitioned into upper and lower, and further spacers 7' to the base. One side and communicating the two or two through the inner hole (10) through the inner hole (10) into the pump on the same side of the base H) and communicating with the lower portion of the opening 12, the body passing through the inner hole from the pump 160 is output to the outside. The winter squeegee 70 is rounded and has a rounded through hole 700 through which the working fluid passes. The cymbal 7G abuts against the ridges of the base 1 (Fig. 4), which flows the working fluid flowing from the water inlet 14 into the upper portion of the opening 12 and through the perforations 700 to the lower portion of the opening 12. The working fluids are separated to prevent one from interfering with each other and generating a flow. Referring to FIG. 4 together, the housing 20 has a square shape, and is fixed to the base 10 by screws, and a circular opening is formed in the middle portion thereof (not shown). A partition 2000 separates the opening from a first chamber 22 and a second chamber 2002. The first chamber 22 is located above the second chamber 2002 and is not in communication with each other to prevent the working fluid from penetrating into the first chamber 22 from the second chamber 2002. The first chamber 22 has an annular shape with an opening direction upward to accommodate the stator 30. The housing 20 is surrounded by a central portion of the first chamber 22 to form a circular shaft tube 220. The housing 20 surrounds an edge region of the first chamber 22 to form a side wall (not shown). The height of the shaft tube 220 is slightly lower than the height of the side wall (as in Figure 4). The second chamber 2002 has an opening facing downward for receiving the corresponding structure of the rotor 40. Referring to FIG. 4, the second chamber 2002 includes a circular first recess 24, a second annular recess 26 surrounding the first recess 24, and a ring 200928099 - the third surrounding the second recess 26. Concave portion 28. The first recessed portion 24 is defined in the middle portion of the shaft tube 220. The second recessed portion 26 is defined in the shaft tube 220 and adjacent to the outer wall surface of the shaft tube 220. The third recess portion 28 is defined in the outer wall portion 220. The inner wall of the side wall is adjacent to the side wall. The depths of the first recess 24, the second recess 26, and the third recess 28 are equal and greater than the depth of the first chamber 22. An annular groove (not labeled) surrounding the second chamber 2002 is defined in the bottom surface of the sidewall, and an elastic annular gasket 80 is embedded in the annular groove and abuts against the top surface of the base 10. In order to give the pump a better liquid sealing effect. One side of the side wall defines a notch 222 corresponding to the water inlet 14 and the water outlet 16 , and the notch 222 communicates with the first chamber 22 for the wire of the circuit board 50 (not labeled) . Referring to FIG. 2 to FIG. 5 , the rotor 40 is sandwiched between the housing 20 and the base 10 , and includes an impeller group (not labeled), a rotating shaft 408 inserted in the middle of the impeller group, and a combination. An inner hub 404 to the impeller assembly and surrounding the rotating shaft 408 and a hub 406 extending vertically upward from the edge of the impeller assembly and surrounding the inner hub 404. The impeller assembly further includes a circular plate (not shown) and a plurality of blades 402 bonded to the bottom of the circular plate. The impeller assembly is received within the upper portion of the opening 12 of the base 10 (Fig. 4) which disturbs the working fluid by rotation of the vanes 402 to cause it to flow downward. The shaft 408 is perpendicular to the circular plate and is received by a bearing 46 in the first recess 24 of the housing 20 (Fig. 4) to axially position the rotor 40. The inner hub 404 is received in the second recess 26 of the housing 20, and the outer hub 406 is received in the third recess 28 of the housing 20 (as shown in FIG. 4), both of which include two annular shapes. The splint (not shown), wherein the two clamps 200928099 of the inner hub 404 are coaxial and sandwich an inner permanent magnet 42 in the ring, and the outer splint -406 two splints are coaxial and sandwiched together. The outer permanent magnet 44 is therein. As shown in FIG. 5, the outer magnet 44 and the inner magnet 42 each have a plurality of N poles 422, 440 and S poles 420, 442 which are evenly distributed and alternate with each other. The magnetic poles 440, 442 and the inner body 42 of the outer magnet 44 are shown. The opposite poles 420, 422 are opposite, that is, the N pole 440 of the outer magnet 44 is opposite to the S pole 420 of the inner magnet 42 and the S pole 442 of the outer magnet 44 is facing the N pole 422 of the inner magnet 42. When the stator 30 is energized, the generated diplomatic magnetic field can act on the inner magnet 42 and the outer magnet 44, respectively, thereby collectively pushing the rotor 40 to rotate. The stator 30 is received in the first chamber 22 of the outer casing 20, and is electrically connected to the circuit board 50 to generate an alternating magnetic field by being excited by a current. The stator 30 includes a plurality of parallel yokes stacked on each other (not shown), wherein each yoke includes an annular outer frame 32 and a plurality of teeth 34 formed radially inwardly from the outer frame 32 (as shown in the figure). 3) and a plurality of positioning portions 38 respectively coupled to the ends of the teeth 034. A plurality of exciting coils 36 are wound around the teeth portion 34 to magnetize the chips to generate a strong magnetic field. The number of teeth 34 of the stator 30 is equal to the number of magnetic poles 420, 422, 440, 444 of the inner magnet 42 or the outer magnet 44, and each tooth portion 34 is magnetized to a magnetic pole of opposite polarity after the coil 36 is energized. (Fig. 5), wherein a magnetic field generated by one of the magnetic poles located outside the tooth portion 34 acts on the opposite magnetic poles 440, 442 of the outer magnet 44, so that the outer magnet 44 generates a magnetic moment perpendicular to the direction of the paper surface; The magnetic field generated by the other magnetic pole on the inner side of the inner magnet 42 acts on the opposite magnetic poles 420, 422 of the inner magnet 42 to produce an inner magnetic moment of the inner magnet 42 in the same direction as the outer magnetic moment of the above. Since the inner magnetic moment is the same as the direction of the outer magnetic moment, the two together drive the rotor 40 to rotate to obtain a higher rotational speed. The width of the positioning portion 38 is larger than the width of the tooth portion 34 to more uniformly distribute the magnetic field inside the stator 30. The circuit board 50 has a substantially circular shape, and a circular hole (not shown) is formed in the middle portion thereof, and one side thereof has a wire communicating with an external circuit (not shown). The circuit board 50 is placed on the stator 30 (as shown in FIG. 4), and the wires pass through the notch 222 of the casing 20, and the circular holes are inserted into the shaft tube 220 of the casing 2 The circuit board 50 is placed on the shaft tube 22, and the top surface of the circuit board % is flush with the top surface of the shaft tube 220 (Fig. 4). The cover plate 60 has a square shape and is fixed to the casing 2 by screws to form an integral body with the body 20 and the base 1 as shown in FIG. The cover plate 60 covers the circuit board 50' to protect components located inside the casing 2. When the circuit board 50 is energized, it delivers current into the stator 3 to excite the stator 30, causing an alternating magnetic field to be generated on both the inner and outer sides. Since the inner magnet 42 and the outer magnet 44 of the rotor 4 are respectively placed on the inner and outer sides of the stator 3, the two can be respectively driven by the internal and external magnetic fields generated by the stator 30 to rotate in the same direction, thereby jointly driving the rotor 4〇. Rotate. Therefore, the magnetic field generated by the stator 30 of the pump of the present invention can be sufficiently utilized as compared with the conventional pump, which can drive the inner magnet 42 and the outer magnet 44 of the rotor 40 to make the rotor 4 The speed of the pump, in turn, improves the efficiency of the pump. As shown in FIG. 6, it can be understood that in order to overcome the "dead point" that the rotor 4 is unable to self-start due to poor design in the conventional chestnut, the phenomenon, the magnetic pole of the inner magnet 42 and the outer magnet 44 can be used. 420, 422, 440, 442 are offset from each other by a certain angle, so that the magnetic fields generated by the two are in an opposite state. It is also understood that the design of the dual magnet of the present invention is not limited to use in a pump, but can also be extended to In other related fields, such as a fan or a generator. In summary, the present invention has indeed met the requirements of the invention patent, and the patent application is filed according to law. However, the above is only a preferred embodiment of the present invention, The scope of the patent application in this case cannot be limited. Any equivalent modifications or variations made by those skilled in the art to the spirit of the present invention should be included in the scope of the following patent application. Figure 2 is an exploded view of Figure 1. Figure 3 is a view of the pump hidden circuit board and cover of Figure 1. Figure 4 is a longitudinal sectional view of Figure 1. Figure 5 is a schematic diagram of the operation of the pump according to another embodiment of the present invention. The main component symbol description] base 10 opening 12 water inlet 14 inner 孑L 140,160 water outlet 16 convex strip 18 shell Body 20 partition 2000 second chamber 2002 first chamber 22 12 200928099 shaft tube 220 notch 222 first recess 24 second recess 26 third recess 28 stator 30 outer frame 32 tooth 34 coil 36 locating portion 38 rotor 40 blade 402 Inner hub 404 Outer hub 406 Rotary shaft 408 Inner magnet 42 S pole 420, 442N pole 422 > 440 Outer magnet 44 Bearing 46 Circuit board 50 Cover 60 Spacer 70 Perforation 700 Washer 80 ❹ 13