1281966 九、發明說明： 【發明所屬之技術領域】 本發明涉及一種泵體，特別涉及一種應用於液冷散熱系統中的小 型泵體。 【先前技術】 電腦CPU速度越來越快，產生熱量一直增加，傳統風冷散熱方式 逐漸不能滿足散熱要求，高噪音亦漸不能被現代生活環境接受，液冷 方式散熱是一種同時解決上述問題的方法。目前，市面上有為超頻電 腦應用之DIY (Do It Yourself)液冷散熱系統，但在桌上型電腦及筆記 型電腦尚無液冷式散熱系統的標準配備。隨著CPU發熱量增加，散熱 求增大，低噪音要求殷切下，未來液冷式散熱系統被廣泛應用，是 可預期的。 液冷散熱系統最重要的零組件之一為驅動液體的泵體，除了要產 生足夠的液壓及流量等高效能考量外，輕薄短小、低噪音、高可靠度 亦為泵體設計所強調的重點。習知的散熱用泵體種類並不多，其中液 祖的雄封f生及運轉可罪度與軸承結構息息相關，目前車交常用的轴承結 構多為塑膠或其他類型的滑動轴承，但運轉的效能、壽命及潤滑特性 有待商確。 【發明内容】 故’創作人有鑑社述之問題與缺失，乃經由多謂估及考量， 並以從事於此行業累積之多年經驗，提供—種具有改良效果的小妙 1281966 體0 根據本發明的一個實施例，該小型泵體包括一轉動部及一用於驅 動該轉動部的驅動部，該轉動部及驅動部藉由一隔離元件隔開，該轉 動部包括一葉輪及與葉輪結合的旋轉轴，該旋轉軸藉由一轴承可旋轉 地支撐，該旋轉軸與該轴承之間具有一軸承間隙，當旋轉軸相對於軸 承旋轉時，該液冷散熱系統的部分冷卻液於該軸承間隙產生動態的壓 力，防止旋轉轴與軸承在徑向上的直接接觸。 該實施例中，冷卻液與驅動部的電路藉由隔離元件隔絕，提昇電 路安全性及泵體模組化的彈性及可靠度，又因動壓效應冷卻液源源不 斷地被吸入軸承與旋轉轴之間，此結構設計讓冷卻液的功能不僅僅是 冷卻，還有潤滑軸承的功能，增加運轉穩定度及產品壽命。 【實施方式】 請參閱第一至第三圖，該小型泵體100用於液冷散熱系統中以驅 動冷卻液循環，其包括有一殼體60及收容於殼體60内的轉動部30及 驅動部50。該殼體60主要包括一隔離元件15及安裝於該隔離元件15 兩相對側的底座10及上蓋20。該隔離元件15與該底座10之間形成一 收容室14，該驅動部50收容於該收容室14。該隔離元件15與上蓋2〇 之間形成一液體腔16，轉動部30收容於該液體腔16。該轉動部3〇在 驅動部50的驅動下旋轉從而驅動冷卻液在液冷散熱系統中循環。該液 體腔16内設一支撐該轉動部30旋轉的流體動壓轴承40，該流體動壓 軸承40利用液體腔16中的部分冷卻液作為潤滑流體。 1281966 該上蓋20設有一入液管22及一出液管24,分別與液體腔16連通。 該轉動部30包括一葉輪3卜由該葉輪31攜帶的永久磁鐵35及一 與葉輪31結合的旋轉轴36，該旋轉軸36可旋轉地收容於該流體動壓 軸承40的軸孔中。 該葉輪31包括一圓盤32及一自圓盤32延伸的環形側壁33，該永 久磁鐵35設於該環形側壁33内側。該圓盤32上表面設有複數自圓盤 32中部向圓盤32周緣發散的槽道322 ’從负在槽道322之間形成類似 葉片的結構。當葉輪31旋轉時，該類似葉片的結構擾動冷卻液從而形 成冷卻液循環。 該旋轉軸36的上端凸伸出該圓盤32上表面，該入液管22與該旋 轉軸36正對，該上蓋2〇於正對該入液管22的位置設有一與旋轉軸36 上端接觸的摩擦片26。 該旋轉軸36的外表面及該流體動壓轴承40的内表面至少其中之 一設有動壓發生槽(圖未示，動壓發生槽為一般流體動壓軸承皆設置的 元件，此不作詳細描述)。當旋轉轴36相對於流體動壓軸承4〇旋轉時， 液體腔16的冷卻液由於動壓效應被吸入旋轉轴36與流體動壓軸承4〇 之間當作潤滑流體，並沿動壓發生槽建立動態的壓力分佈，防止旋轉 軸36與流體動壓軸承4〇物理接觸，增加運轉穩定度及有效延長產品 的哥命。 該流體動壓軸承40的軸孔底端封閉，形成一「u」形結構。該流 體動壓軸承40的軸孔底部設置一支撐該旋轉軸36底端的摩擦片42 , 1281966 而·卩㈣設t與概底部連通的爾流體通道44，以利冷卻液源 源不斷地進入該流體動壓軸承4〇進行潤滑、建立動壓。 該驅動部50包括一電樞繞組52 (該電樞繞組52的繞線部分圖未 示電樞繞組52係習知技術，此不詳細描述）及一電路板54，該電樞 繞組52的繞線與電路板54的線路連接，用以通電產生電磁場，該電 磁％推動永久磁鐵35轉動，從而驅動轉動部3〇旋轉。 該底座10中部設一中空的柱體12。該零樞繞組52及該電路板54 口疋於。玄柱體12外圍。該隔離元件μ設有一凸起部丨52，而在該凸起 部152中部一體地設一凹陷部154，該凹陷部154容置於該柱體12内， 而該流體動壓軸承40收容於該凹陷部154内。該凸起部152罩設於該 驅動部50外圍，當轉動部3〇安裝後，該葉輪31罩設該隔離元件2〇 的凸起部152,而該葉輪31的永久磁鐵35剛好位於凸起部152外側並 與驅動部50的電樞繞組52正對。 組裝時，該驅動部50裝設於該底座1〇的柱體12外圍；然後將隔 離元件15罩設於底座1〇上；然後將流體動壓軸承4〇置入該隔離元件 15的凹陷部154内；隨後將轉動部3〇置於隔離元件15上，也可以事 先將隔離元件15與轉動部30的旋轉軸36組裝在一起，再一起裝設至 隔離元件15上；隨後將上蓋20罩設於轉動部30上，最後將該底座1〇、 隔離元件15及上蓋20結合一體，可用鎖固方式如螺鎖、铆合，亦可 採用焊接等方式。 在該小型泵體100 _，該隔離元件15利用自身將該驅動部50完 10 ⑧ 1281966 全與冷部液隔絕，從而可保證電路安全之防水措施。轉動部30及驅動 邰5〇兩部份藉由隔離元件15隔開，相互獨立，方便整體結構的模組 化"又片。而流體動壓軸承40浸入該液體腔16的冷卻液内，當該冷卻 液被源源不斷地吸入該流體動壓軸承40，不僅能建立動壓，而且可解 決流體動壓軸承4〇的散熱問題，提高小型泵體1〇〇的運轉穩定度及壽 命0 綜上所述’本創作之風扇馬達結構於使用時具有顯著之功效增 進’誠符合新賴性、創作性及進步性之專利要件，爰依法提出申請， 盼審委早曰賜准本案，以保障創作人之辛苦創作，倘若鈞局有任 何稽疑，請不吝來函指示，創作人定當竭力配合，實感德便。 【圖式簡單說明】. 第一圖為本發明小型泵體一個實施例的立體分解圖。 第二圖為第一圖的立體組合圖。 弟二圖為第二圖沿剖面線III-III的剖視圖。 【主要元件符號說明】 小型泵體 100 底座 10 柱體 12 收容室 14 隔離元件 15 凸起部 152 凹陷部 154 液體腔 16 上蓋 20 入液管 22 出液管 24 摩擦片 26 >42 轉動部 30 葉輪 31 圓盤 32 槽道 322 1281966 環形側壁 33 永久磁鐵 35 旋轉軸 36 流體動壓軸承 40 潤滑流體通道 44 驅動部 50 電才區繞組 52 電路板 54 121281966 IX. Description of the Invention: [Technical Field] The present invention relates to a pump body, and more particularly to a small pump body for use in a liquid cooling system. [Prior Art] Computer CPU speed is getting faster and faster, heat generation has been increasing, traditional air-cooling heat dissipation method can not meet the heat dissipation requirements, and high noise can not be accepted by modern living environment. Liquid cooling method is a kind of solution to solve the above problems at the same time. method. Currently, there is a DIY (Do It Yourself) liquid cooling system for overclocking computers, but there is no standard for liquid-cooled cooling systems in desktop computers and notebook computers. As CPU heat generation increases, heat dissipation increases, and low noise requirements are eagerly awaited. Future liquid-cooled heat dissipation systems are widely used and are expected. One of the most important components of the liquid cooling system is the pump body that drives the liquid. In addition to high-capacity considerations such as sufficient hydraulic pressure and flow rate, the light weight, shortness, low noise and high reliability are also the emphasis of the pump design. . There are not many types of pumping bodies for heat dissipation, and the sinisterness and operation of the liquid ancestors are closely related to the bearing structure. At present, the common bearing structures used in the car are mostly plastic or other types of sliding bearings, but the operation Performance, longevity and lubrication characteristics are yet to be determined. [Summary of the Invention] Therefore, the creators have problems and shortcomings in the company, which are estimated and considered through multiple opinions, and provide years of experience accumulated in this industry to provide a kind of improved effect of Xiaomiao 1281966 body 0 according to this In one embodiment of the invention, the small pump body includes a rotating portion and a driving portion for driving the rotating portion, the rotating portion and the driving portion are separated by an isolating member, the rotating portion includes an impeller and is coupled with the impeller a rotating shaft rotatably supported by a bearing having a bearing gap between the rotating shaft and the bearing, and a portion of the cooling liquid of the liquid cooling system is applied to the bearing when the rotating shaft rotates relative to the bearing The gap creates dynamic pressure that prevents direct contact of the rotating shaft with the bearing in the radial direction. In this embodiment, the cooling liquid and the circuit of the driving part are insulated by the isolation component to improve the safety of the circuit and the flexibility and reliability of the modularization of the pump body, and the coolant source is continuously sucked into the bearing and the rotating shaft due to the dynamic pressure effect. Between the design, the function of the coolant is not only cooling, but also the function of lubricating the bearing, increasing the stability of operation and product life. [Embodiment] Referring to the first to third figures, the small pump body 100 is used in a liquid cooling system to drive a coolant circulation, and includes a housing 60 and a rotating portion 30 and a drive housed in the housing 60. Department 50. The housing 60 mainly includes a spacer member 15 and a base 10 and an upper cover 20 mounted on opposite sides of the spacer member 15. A receiving chamber 14 is formed between the spacer element 15 and the base 10, and the driving portion 50 is received in the receiving chamber 14. A liquid chamber 16 is formed between the spacer element 15 and the upper cover 2, and the rotating portion 30 is received in the liquid chamber 16. The rotating portion 3 is rotated by the driving portion 50 to drive the coolant to circulate in the liquid cooling heat dissipation system. The fluid chamber 16 is provided with a fluid dynamic bearing 40 for supporting the rotation of the rotating portion 30. The fluid dynamic bearing 40 utilizes a part of the coolant in the liquid chamber 16 as a lubricating fluid. 1281966 The upper cover 20 is provided with an inlet pipe 22 and an outlet pipe 24, which are respectively connected to the liquid chamber 16. The rotating portion 30 includes an impeller 3, a permanent magnet 35 carried by the impeller 31, and a rotating shaft 36 coupled to the impeller 31. The rotating shaft 36 is rotatably received in the shaft hole of the fluid dynamic bearing 40. The impeller 31 includes a disk 32 and an annular side wall 33 extending from the disk 32. The permanent magnet 35 is disposed inside the annular side wall 33. The upper surface of the disk 32 is provided with a plurality of channels 322' which diverge from the middle of the disk 32 toward the periphery of the disk 32 to form a blade-like structure between the negative channels 322. When the impeller 31 rotates, the blade-like structure disturbs the coolant to form a coolant circulation. The upper end of the rotating shaft 36 protrudes from the upper surface of the disc 32, and the liquid inlet tube 22 is opposite to the rotating shaft 36. The upper cover 2 is disposed at an upper end of the rotating shaft 36 at a position facing the liquid inlet tube 22. Contact friction plate 26. At least one of the outer surface of the rotating shaft 36 and the inner surface of the fluid dynamic bearing 40 is provided with a dynamic pressure generating groove (not shown, the dynamic pressure generating groove is a component provided by a general fluid dynamic bearing, and this is not detailed. description). When the rotating shaft 36 rotates relative to the fluid dynamic bearing 4〇, the coolant of the liquid chamber 16 is sucked into the lubricating shaft between the rotating shaft 36 and the fluid dynamic bearing 4〇 due to the dynamic pressure effect, and acts along the dynamic pressure generating groove. A dynamic pressure distribution is established to prevent the rotating shaft 36 from physically contacting the fluid dynamic bearing 4, increasing the operational stability and effectively extending the product's life. The bottom end of the shaft hole of the fluid dynamic bearing 40 is closed to form a "u"-shaped structure. A bottom of the shaft hole of the fluid dynamic bearing 40 is provided with a friction plate 42 supporting the bottom end of the rotating shaft 36, 1281966 and 四 (4) a fluid passage 44 communicating with the bottom portion of the rotating shaft to facilitate the continuous flow of the coolant into the fluid. The dynamic pressure bearing 4〇 is lubricated to establish dynamic pressure. The driving portion 50 includes an armature winding 52 (the winding portion of the armature winding 52 is not shown in the prior art, which is not described in detail), and a circuit board 54 is wound around the armature winding 52. The line is connected to the line of the circuit board 54 for energization to generate an electromagnetic field which urges the permanent magnet 35 to rotate, thereby driving the rotating portion 3 to rotate. A hollow cylinder 12 is disposed in the middle of the base 10. The zero-wound winding 52 and the circuit board 54 are connected to each other. Xuan cylinder 12 periphery. The spacer element 51 is provided with a convex portion 52, and a recess portion 154 is integrally formed in the middle portion of the convex portion 152. The recess portion 154 is received in the column 12, and the fluid dynamic bearing 40 is received in the Inside the recess 154. The protrusion 152 is disposed on the periphery of the driving portion 50. When the rotating portion 3 is mounted, the impeller 31 covers the convex portion 152 of the spacer member 2, and the permanent magnet 35 of the impeller 31 is located just above the protrusion. The outer portion of the portion 152 is opposite to the armature winding 52 of the driving portion 50. When assembled, the driving portion 50 is mounted on the periphery of the column 12 of the base 1; then the spacer member 15 is placed on the base 1; then the fluid dynamic bearing 4 is placed in the recess of the spacer member 15. 154; then the rotating portion 3 is placed on the spacer element 15, or the spacer member 15 and the rotating shaft 36 of the rotating portion 30 may be assembled together and then mounted together to the spacer member 15; then the upper cover 20 is covered It is disposed on the rotating portion 30, and finally the base 1〇, the spacer member 15 and the upper cover 20 are integrally combined, and can be locked by a locking method such as screwing, riveting or welding. In the small pump body 100_, the spacer element 15 isolates the drive unit 50 from the cold liquid by itself, thereby ensuring waterproof measures for circuit safety. The rotating portion 30 and the driving 邰5〇 are separated by the spacer element 15 and are independent of each other, facilitating the modularization of the overall structure. The fluid dynamic pressure bearing 40 is immersed in the coolant of the liquid chamber 16, and when the coolant is continuously sucked into the fluid dynamic pressure bearing 40, not only the dynamic pressure can be established, but also the heat dissipation problem of the fluid dynamic bearing 4〇 can be solved. To improve the operation stability and life of the small pump body 1 In summary, the fan motor structure of the present invention has a significant effect on the use of the product, which is in line with the new, creative and progressive patent requirements.提出 Submit an application in accordance with the law, and hope that the trial committee will grant the case as soon as possible to protect the creators' hard work. If there is any doubt in the bureau, please do not hesitate to give instructions, the creator will try his best to cooperate and feel good. BRIEF DESCRIPTION OF THE DRAWINGS The first figure is an exploded perspective view of an embodiment of a small pump body of the present invention. The second figure is a perspective combination of the first figure. The second figure is a cross-sectional view along the section line III-III of the second figure. [Main component symbol description] Small pump body 100 Base 10 Column 12 Storage chamber 14 Isolation element 15 Projection portion 152 Depression portion 154 Liquid chamber 16 Upper cover 20 Inlet pipe 22 Outlet pipe 24 Friction plate 26 > 42 Rotation portion 30 Impeller 31 Disc 32 Channel 322 1281966 Annular side wall 33 Permanent magnet 35 Rotary shaft 36 Fluid dynamic bearing 40 Lubricating fluid passage 44 Drive 50 Electric field winding 52 Circuit board 54 12