TWI763184B - Motor and rotation shaft cooling device thereof - Google Patents
Motor and rotation shaft cooling device thereof Download PDFInfo
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- TWI763184B TWI763184B TW109144527A TW109144527A TWI763184B TW I763184 B TWI763184 B TW I763184B TW 109144527 A TW109144527 A TW 109144527A TW 109144527 A TW109144527 A TW 109144527A TW I763184 B TWI763184 B TW I763184B
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Abstract
Description
本發明係關於一種馬達及其轉軸冷卻裝置。 The present invention relates to a motor and its rotating shaft cooling device.
一般馬達在使用時，隨著轉速的提升，會導致心軸溫度上升，進而增加電性損耗及滑差的大小，甚至影響加工時的熱位移及精密度，還可能減少馬達的使用效能及壽命。 In general, when the motor is in use, with the increase of the speed, the temperature of the mandrel will increase, which will increase the electrical loss and slip, and even affect the thermal displacement and precision during processing, and may also reduce the efficiency and life of the motor. .
讓馬達散熱的方式例如有中華民國專利公告號M412023，提供一種自內部冷卻心軸單元的主軸裝置，包含一頭座單元、一心軸單元、一殼體單元、一馬達及一軸承單元。該頭座單元的一推桿與該心軸單元的一軸套之間形成一環形空間，該推桿具有一可引入外部冷空氣的主流道及多數由該主流道貫穿至該環形空間的歧流道，藉此，該主軸裝置運轉時，利用冷空氣導入該推桿內部以及該環形空間，可自內部對該心軸單元進行冷卻，且可提高加工精度。 For example, the way to dissipate heat from the motor is the Republic of China Patent Publication No. M412023, which provides a main shaft device for cooling a mandrel unit from the inside, including a head unit, a mandrel unit, a housing unit, a motor and a bearing unit. An annular space is formed between a push rod of the head unit and a sleeve of the mandrel unit. The push rod has a main flow channel that can introduce external cold air and a plurality of manifolds that pass through the main flow channel to the annular space. Therefore, when the main shaft device is running, cold air is introduced into the inside of the push rod and the annular space, so that the spindle unit can be cooled from the inside, and the machining accuracy can be improved.
然而，前述專利案中，歧流道在推桿上全長度的分布，冷空氣從最接近進氣孔的歧流道流入環形空間後可能直接由排氣孔離開環形空間，因此這些冷空氣僅能接觸到最接近進氣孔的歧流道到進氣孔之間短距離的心軸單元，對心軸單元的散熱效果較為有限，且前端的這些冷空氣可能形成擾流，干擾後端冷空氣的回流，進而影響散熱效果。另外前述專利案於軸套之間的環形空間，為典型之管流，較缺乏熱傳強化效果。 However, in the aforementioned patent case, the distribution of the manifold passages along the entire length of the pushrod, the cold air may directly leave the annular space through the exhaust holes after flowing into the annular space from the manifold passages closest to the intake holes, so these cold air only The mandrel unit that can touch the short distance between the manifold channel closest to the air intake hole and the air intake hole has a limited heat dissipation effect on the mandrel unit, and the cold air at the front end may form a turbulent flow and interfere with the cooling of the rear end. The backflow of air affects the cooling effect. In addition, the annular space between the shaft sleeves in the aforementioned patent is a typical tube flow, which lacks the heat transfer enhancement effect.
爰此，本發明人提出一種馬達轉軸冷卻裝置，包含：一軸件，有相對的一前端及一後端，該軸件中空而形成一流道，該軸件上有複數穿孔，且所述穿孔與該後端的距離在該軸件全長的二分之一以內，所述穿孔之孔徑分布大小可視熱負載特性適當調整；一軸封，設置於該軸件的該前端，該軸封中空且有一入口連通該流道；以及一罩體，結合於該軸封，該罩體有一出口。 Therefore, the present inventor proposes a cooling device for a motor shaft, comprising: a shaft member having a front end and a rear end opposite to each other, the shaft member is hollow to form a flow channel, and the shaft member has a plurality of perforations, and the perforations are connected with each other. The distance of the rear end is within 1/2 of the full length of the shaft member, and the aperture distribution of the through holes can be appropriately adjusted according to the thermal load characteristics; a shaft seal is arranged on the front end of the shaft member, the shaft seal is hollow and has an inlet communicating with it the flow channel; and a cover body combined with the shaft seal, the cover body has an outlet.
進一步，該軸件的該前端有一傳動鍵。 Further, the front end of the shaft member has a transmission key.
進一步，該軸件的該後端有一定位導翼。 Further, the rear end of the shaft member has a positioning guide wing.
進一步，該軸件外壁設置環狀或螺旋狀的一鰭翼，該鰭翼與該軸件之一軸向的夾角介於30度至90度之間。 Further, an annular or helical fin is disposed on the outer wall of the shaft member, and an included angle between the fin and an axial direction of the shaft member is between 30 degrees and 90 degrees.
其中，所述穿孔的直徑介於該軸件管徑的0.1至0.5倍之間，且越接近該後端，所述穿孔的直徑越小或維持相同。 Wherein, the diameter of the through hole is between 0.1 and 0.5 times the diameter of the shaft member, and the closer to the rear end, the smaller the diameter of the through hole or the same.
本發明人再提出一種馬達，包含：一殼體；一轉軸，設置於該殼體中，該轉軸內部有一開放端及一封閉端形成一容置空間；一軸件，設置於該轉軸內部，該軸件有相對的一前端及一後端，該軸件上有複數穿孔，該軸件中空而形成一流道，該流道藉由所述穿孔連通該容置空間，且所述穿孔與該後端的距離在該軸件全長的二分之一以內，所述穿孔之孔徑分布大小可視熱負載特性適當調整；一軸封，設置於該軸件的該前端，該軸封中空且有一入口連通該流道；以及一罩體，結合於該軸封及該殼體上，該罩體有一出口連通該容置空間。 The inventor further proposes a motor, comprising: a casing; a rotating shaft disposed in the casing; an open end and a closed end inside the rotating shaft form an accommodating space; a shaft member disposed inside the rotating shaft, the rotating shaft The shaft member has a front end and a rear end opposite, a plurality of perforations are arranged on the shaft member, the shaft member is hollow to form a flow channel, the flow channel communicates with the accommodating space through the perforation, and the perforation and the rear The distance between the ends is within one-half of the full length of the shaft member, and the aperture distribution of the through holes can be appropriately adjusted according to the thermal load characteristics; a shaft seal is arranged on the front end of the shaft member, the shaft seal is hollow and an inlet communicates with the flow and a cover body, which is combined with the shaft seal and the housing, and the cover body has an outlet communicating with the accommodating space.
進一步，該軸件的該前端有一傳動鍵，該轉軸的該開放端有一凹槽，該軸件藉由該傳動鍵卡合於該轉軸的該凹槽。 Further, the front end of the shaft member has a transmission key, the open end of the rotating shaft has a groove, and the shaft member is engaged with the groove of the rotating shaft through the transmission key.
進一步，該軸件的該後端有一定位導翼，該軸件藉由該定位導翼抵頂於該轉軸。 Further, the rear end of the shaft member has a positioning guide wing, and the shaft member is pressed against the rotating shaft by the positioning guide wing.
進一步，該軸件外壁或該轉軸內壁設置環狀或螺旋狀的一鰭翼，該鰭翼為凸出或凹入的形式，該鰭翼的截距介於該容置空間之水力直徑的8至12倍之間。 Further, the outer wall of the shaft member or the inner wall of the rotating shaft is provided with a ring-shaped or helical fin, the fin is in a convex or concave form, and the intercept of the fin is between the hydraulic diameter of the accommodating space. Between 8 and 12 times.
其中，該鰭翼的截距高度介於該容置空間之高度的0.1至0.2倍之間。 Wherein, the intercept height of the fin is between 0.1 to 0.2 times the height of the accommodating space.
根據上述技術特徵可達成以下功效： According to the above technical features, the following effects can be achieved:
1.藉由流道及接近後端的穿孔，冷卻流體可以直接流入轉軸內部的容置空間，且可以對軸件全長的轉軸進行冷卻，確保冷卻流體對轉軸的冷卻效果。 1. Through the flow channel and the perforation near the rear end, the cooling fluid can directly flow into the accommodating space inside the rotating shaft, and can cool the rotating shaft of the entire length of the shaft to ensure the cooling effect of the cooling fluid on the rotating shaft.
2.冷卻流體流經穿孔形成衝擊噴柱冷卻轉軸，自轉軸封閉端朝向開放端流動，且冷卻流體穿越軸件外壁之環狀或螺旋狀鰭翼時，會破壞流體邊界層、提高紊流強度，再強化冷卻效果。 2. The cooling fluid flows through the perforation to form an impact spray column to cool the rotating shaft, the closed end of the rotating shaft flows toward the open end, and when the cooling fluid passes through the annular or helical fins on the outer wall of the shaft, it will destroy the fluid boundary layer and increase the turbulent intensity. , and then strengthen the cooling effect.
3.藉由軸件外壁上環狀或螺旋狀的鰭翼增加換熱面積，提高轉軸冷卻效益。 3. The annular or helical fins on the outer wall of the shaft part increase the heat exchange area and improve the cooling efficiency of the rotating shaft.
4.入口及出口都在同一側，可以搭配僅有單側開口的轉軸。 4. The inlet and outlet are on the same side, which can be matched with a shaft with only one side opening.
5.軸件藉由前端的傳動鍵與轉軸卡合，使軸件隨著轉軸轉動，進而讓冷卻流體被帶動，輔助冷卻流體繞軸件流動，確保轉軸可以均勻散熱。 5. The shaft is engaged with the rotating shaft by the transmission key at the front end, so that the shaft rotates with the rotating shaft, and then the cooling fluid is driven, and the auxiliary cooling fluid flows around the shaft to ensure that the rotating shaft can dissipate heat evenly.
6.軸件藉由後端的定位導翼抵頂於轉軸，使軸件在轉軸中更為穩固。 6. The shaft is pressed against the rotating shaft by the positioning guide wings at the rear end, so that the shaft is more stable in the rotating shaft.
1:殼體 1: Shell
2:轉軸 2: Spindle
21:開放端 21: Open Ends
211:凹槽 211: Groove
22:封閉端 22: closed end
23:容置空間 23: Accommodating space
3:軸件 3: Shaft
31:前端 31: Front end
311:傳動鍵 311: Transmission key
32:後端 32: Backend
321:定位導翼 321: Positioning guide wing
33:穿孔 33: Perforation
34:鰭翼 34: Fins
35:流道 35: runner
4:軸封 4: Shaft seal
41:入口 41: Entrance
5:罩體 5: cover body
51:出口 51: Export
H:截距高度 H: intercept height
[第一圖]係本發明第一實施例之馬達轉軸冷卻裝置與轉軸之立體分解圖。 [Figure 1] is an exploded perspective view of the motor shaft cooling device and the shaft according to the first embodiment of the present invention.
[第二圖]係本發明第一實施例之剖視圖。 [Fig. 2] is a cross-sectional view of the first embodiment of the present invention.
[第三圖]係本發明第一實施例之另一剖視圖。 [The third figure] is another cross-sectional view of the first embodiment of the present invention.
[第四圖]係本發明第一實施例於實施狀態下之作動圖一，示意冷卻流體進入流道。 [FIG. 4] is an operation diagram 1 of the first embodiment of the present invention in the implementation state, showing the cooling fluid entering the flow channel.
[第五圖]係本發明第一實施例於實施狀態下之作動圖二，示意冷卻流體進入容置空間。 [Fig. 5] is the second action diagram of the first embodiment of the present invention in the implementation state, which shows that the cooling fluid enters the accommodating space.
[第六圖]係本發明第一實施例於實施狀態下之作動圖三，示意冷卻流體由出口離開。 [Fig. 6] is the operation diagram 3 of the first embodiment of the present invention in the implementation state, which shows that the cooling fluid leaves from the outlet.
[第七圖]係Re為10000時，習知技術之轉軸內壁面溫度分布模擬圖。 [Figure 7] is a simulation diagram of the temperature distribution on the inner wall surface of the rotating shaft in the prior art when Re is 10000.
[第八圖]係Re為10000時，本發明第二實施例之轉軸內壁面溫度分布模擬圖。 [Figure 8] is a simulation diagram of the temperature distribution on the inner wall surface of the rotating shaft according to the second embodiment of the present invention when Re is 10000.
[第九圖]係Re為10000時，本發明第一實施例之轉軸內壁面溫度分布模擬圖。 [Figure 9] is a simulation diagram of the temperature distribution on the inner wall surface of the rotating shaft according to the first embodiment of the present invention when Re is 10000.
[第十圖]係Re為20000時，習知技術之轉軸內壁面溫度分布模擬圖。 [Fig. 10] is a simulation diagram of the temperature distribution on the inner wall of the rotating shaft in the prior art when Re is 20000.
[第十一圖]係Re為20000時，本發明第二實施例之轉軸內壁面溫度分布模擬圖。 [Figure 11] is a simulation diagram of the temperature distribution on the inner wall surface of the rotating shaft according to the second embodiment of the present invention when Re is 20000.
[第十二圖]係Re為20000時，本發明第一實施例之轉軸內壁面溫度分布模擬圖。 [Figure 12] is a simulation diagram of the temperature distribution on the inner wall surface of the rotating shaft according to the first embodiment of the present invention when Re is 20000.
綜合上述技術特徵，本發明馬達及其轉軸冷卻裝置的主要功效將可於下述實施例清楚呈現。 In view of the above technical features, the main effects of the motor and its rotating shaft cooling device of the present invention will be clearly presented in the following embodiments.
請參閱第一圖及第二圖，係揭示本發明第一實施例之馬達，包含：一殼體(1)、一轉軸(2)及一馬達轉軸冷卻裝置，該馬達轉軸冷卻裝置包含：一軸件(3)、一軸封(4)以及一罩體(5)。 Please refer to the first and second figures, which show a motor according to a first embodiment of the present invention, comprising: a casing (1), a rotating shaft (2) and a motor rotating shaft cooling device, the motor rotating shaft cooling device comprising: a shaft (3), a shaft seal (4) and a cover (5).
該轉軸(2)設置在該殼體(1)中，該轉軸(2)內部有一開放端(21)及一封閉端(22)形成一容置空間(23)，該開放端(21)有一凹槽(211)。 The rotating shaft (2) is arranged in the casing (1), and the rotating shaft (2) has an open end (21) and a closed end (22) inside to form an accommodating space (23), and the open end (21) has a accommodating space (23). groove (211).
該軸件(3)設置於該轉軸(2)內部，該軸件(3)有相對的一前端(31)及一後端(32)分別對應該開放端(21)及該封閉端(22)，該軸件(3)的該前端(31)有一傳動鍵(311)，該後端(32)有一定位導翼(321)，且該軸件(3)上有複數穿孔(33)及環狀或螺旋狀的一鰭翼(34)，該鰭翼(34)可以為凸出或凹入的形式，該軸件(3)中空而形成一流道(35)，該流道(35)藉由所述穿孔(33)連通該容置空間(23)。所述穿孔(33)與該後端(32)的距離在該軸件(3)全長的二分之一以內，所述穿孔(33)之孔徑分布大小可視熱負載特性適當調整，所述穿孔(33)的直徑介於該軸件(3)管徑的0.1至0.5倍之間，相鄰的所述穿孔(33)中心間距介於12至19毫米之間，在本發明之實施方式中，所述穿孔(33)的直徑為3毫米，相鄰的所述穿孔(33)中心間距為16毫米，於實際實施時，越接近該後端，所述穿孔(33)的直徑也可以越小。該鰭翼(34)與該軸件(3)之一軸向的夾角介於30度至90度之間，該鰭翼(34)的截距介於該容置空間(23)之水力直徑的8至12倍之間，該鰭翼(34)的一截距高度(H)介於該容置空間(23)之高度的0.1至0.2倍之間。要特別說明的是，在本發明之實施方式中，所述穿孔(33)僅設置於該軸件(3)截面之0度及180度的方向上，於 實際實施時，90度及270度上也可以設置所述穿孔(33)，或在更多角度上皆設置所述穿孔(33)。該鰭翼(34)除了設置在該軸件(3)外壁上，還可以設置在該轉軸(2)的內壁上，且該鰭翼(34)可以與該軸件(3)或該轉軸(2)一體成型，或是如彈簧般藉由套設的方式結合於該軸件(3)，惟於圖式中未繪出此些實施方式，僅於此處以文字簡單說明。 The shaft member (3) is arranged inside the rotating shaft (2), and the shaft member (3) has a front end (31) and a rear end (32) opposite to the open end (21) and the closed end (22) respectively ), the front end (31) of the shaft member (3) has a transmission key (311), the rear end (32) has a positioning guide wing (321), and the shaft member (3) has a plurality of perforations (33) and An annular or helical fin (34), the fin (34) can be in a protruding or concave form, the shaft (3) is hollow to form a flow channel (35), the flow channel (35) The accommodating space (23) is communicated with the through hole (33). The distance between the through hole (33) and the rear end (32) is within one-half of the full length of the shaft member (3). The diameter of (33) is between 0.1 and 0.5 times the diameter of the shaft (3), and the center-to-center distance between adjacent holes (33) is between 12 and 19 mm. In the embodiment of the present invention , the diameter of the through holes (33) is 3 mm, and the center distance between the adjacent through holes (33) is 16 mm. In actual implementation, the closer to the rear end, the larger the diameter of the through holes (33). Small. The included angle between the fin (34) and an axial direction of the shaft (3) is between 30 degrees and 90 degrees, and the intercept of the fin (34) is between the hydraulic diameter of the accommodating space (23). Between 8 and 12 times the height of the fin (34), an intercept height (H) of the fin (34) is between 0.1 and 0.2 times the height of the accommodating space (23). It should be noted that, in the embodiment of the present invention, the through holes (33) are only arranged in the 0° and 180° directions of the cross section of the shaft member (3). In actual implementation, the through holes ( 33 ) can also be arranged at 90 degrees and 270 degrees, or the through holes ( 33 ) can be arranged at more angles. The fins (34) can be arranged on the inner wall of the shaft (2) in addition to being arranged on the outer wall of the shaft member (3), and the fins (34) can be combined with the shaft member (3) or the shaft. (2) It is integrally formed, or is combined with the shaft member (3) by means of sleeves like a spring. However, these embodiments are not shown in the drawings, and are simply described here in words.
該軸封(4)設置於該軸件(3)的該前端(31)，該軸封(4)中空且有一入口(41)連通該流道(35)。 The shaft seal (4) is arranged on the front end (31) of the shaft member (3), the shaft seal (4) is hollow and an inlet (41) communicates with the flow channel (35).
該罩體(5)結合於該軸封(4)及該殼體(1)上，該罩體(5)有一出口(51)連通該容置空間(23)。藉由該入口(41)及該出口(51)都在同一側的該馬達轉軸冷卻裝置，可以搭配一端為該開放端(21)、另一端則為該封閉端(22)的該轉軸(2)，無需更換該轉軸(2)，方便立即實施。 The cover body (5) is combined with the shaft seal (4) and the housing (1), and the cover body (5) has an outlet (51) that communicates with the accommodating space (23). By means of the motor shaft cooling device with the inlet (41) and the outlet (51) on the same side, the shaft (2) with one end being the open end (21) and the other end being the closed end (22) can be matched. ), there is no need to replace the shaft (2), which is convenient for immediate implementation.
請參閱第二圖及第三圖，該軸件(3)藉由該傳動鍵(311)卡合於該轉軸(2)的該凹槽(211)，且該軸件(3)藉由該定位導翼(321)抵頂於該轉軸(2)，使該軸件(3)穩固的結合在該轉軸(2)中而不會傾斜、晃動，同時該軸件(3)可以與該轉軸(2)同步旋轉，且該軸件(3)的該後端(32)與該轉軸(2)的該封閉端(22)之間仍可以形成該容置空間(23)。 Please refer to the second and third figures, the shaft (3) is engaged with the groove (211) of the rotating shaft (2) by the transmission key (311), and the shaft (3) is The positioning guide wing (321) is pressed against the rotating shaft (2), so that the shaft member (3) is firmly combined in the rotating shaft (2) without tilting and shaking, and the shaft member (3) can be connected with the rotating shaft at the same time. (2) Synchronous rotation, and the accommodating space (23) can still be formed between the rear end (32) of the shaft member (3) and the closed end (22) of the rotating shaft (2).
請參閱第四圖，將一冷卻流體，例如：冷空氣、水、切削液或其他具有冷卻效果的流體，從該軸封(4)上的該入口(41)填充進入該馬達轉軸裝置後，該冷卻流體會從中空的該軸封(4)內部往該軸件(3)中的該流道(35)流動填充。 Please refer to the fourth figure, after filling a cooling fluid, such as cold air, water, cutting fluid or other fluid with cooling effect, from the inlet (41) on the shaft seal (4) into the motor shaft device, The cooling fluid will flow and fill the flow channel (35) in the shaft member (3) from the inside of the hollow shaft seal (4).
請參閱第五圖，並請搭配第二圖及第三圖，本發明採用衝擊噴柱陣列冷卻模式，更詳細的說，該冷卻流體順著該流道(35)往該後端(32)流動後， 會從所述穿孔(33)流入該容置空間(23)中，形成噴柱衝擊該轉軸(2)而對該轉軸(2)進行降溫並自該轉軸(2)的該封閉端(22)朝向該開放端(21)流動，且該冷卻流體穿越該軸件(3)外壁之環狀或螺旋狀的該鰭翼(34)時，會受到阻擋而被破壞流體邊界層、提高紊流強度，再強化冷卻效果。 Please refer to Fig. 5, in conjunction with Fig. 2 and Fig. 3, the present invention adopts the cooling mode of impingement spray column array. More specifically, the cooling fluid follows the flow channel (35) to the rear end (32). After flowing, Will flow into the accommodating space (23) from the through hole (33), forming a spray column to impact the rotating shaft (2) to cool the rotating shaft (2) and from the closed end (22) of the rotating shaft (2) When the cooling fluid flows toward the open end (21), and the cooling fluid passes through the annular or helical fins (34) of the outer wall of the shaft member (3), it will be blocked and the fluid boundary layer will be destroyed, thereby increasing the turbulent intensity. , and then strengthen the cooling effect.
當該轉軸(2)旋轉時，由於該軸件(3)藉由該傳動鍵(311)與該轉軸(2)的該凹槽(211)卡合，因此該軸件(3)會隨著該轉軸(2)轉動，進而讓該冷卻流體被帶動，藉此輔助該冷卻流體繞該軸件(3)流動，確保該轉軸(2)可以均勻散熱。該冷卻流體並沿該鰭翼(34)的螺旋方向繞該軸件(3)流動，產生泵作用，可以再提升該冷卻流體對該轉軸(2)的冷卻效果，於實際實施時，可以選擇該鰭翼(34)圈數較多的該軸件(3)以再加強該冷卻流體的冷卻效果。 When the shaft (2) rotates, since the shaft member (3) is engaged with the groove (211) of the shaft (2) through the transmission key (311), the shaft member (3) will follow the The rotating shaft (2) rotates so that the cooling fluid is driven, thereby assisting the cooling fluid to flow around the shaft member (3) and ensuring that the rotating shaft (2) can dissipate heat evenly. The cooling fluid flows around the shaft (3) along the helical direction of the fins (34) to generate a pumping effect, which can further enhance the cooling effect of the cooling fluid on the shaft (2). The shaft member (3) with a larger number of turns of the fin (34) further enhances the cooling effect of the cooling fluid.
請參閱第六圖，並請搭配第三圖，該冷卻流體從所述穿孔(33)流入該容置空間(23)後，順著該軸件(3)及該鰭翼(34)，該冷卻流體會從該封閉端(22)往該開放端(21)流動而吸收該轉軸(2)的熱能，接著該冷卻流體會填充進該罩體(5)與該殼體(1)之間，並從該罩體(5)上的該出口(51)排出。要特別說明的是，在該轉軸(2)的該開放端(21)，該軸件(3)僅有該傳動鍵(311)接觸該轉軸(2)的該凹槽(211)，因此該容置空間(23)及該出口(51)仍是相互連通的。於實際實施時，可以在該出口(51)連接適當的引流設備以集中使用後的該冷卻流體，惟此情景未於圖式中繪出。由於所述穿孔(33)較接近該封閉端(22)，該冷卻流體可以對該軸件(3)全長的該轉軸(2)進行冷卻，確保該冷卻流體對該轉軸(2)的冷卻效果，避免所述穿孔(33)較接近該開放端(21)時，該冷卻流體一從所述穿孔(33)進入該容置空間(23)後就立即從該開放端(21)離開該容置空間(23)，而無法對該轉軸(2)產生足夠的冷卻效果。 Please refer to the sixth figure and the third figure. After the cooling fluid flows into the accommodating space (23) from the through hole (33), it follows the shaft (3) and the fin (34). The cooling fluid will flow from the closed end (22) to the open end (21) to absorb the thermal energy of the rotating shaft (2), and then the cooling fluid will be filled between the cover (5) and the casing (1) , and discharged from the outlet (51) on the cover (5). It should be noted that, at the open end (21) of the rotating shaft (2), only the transmission key (311) of the shaft member (3) contacts the groove (211) of the rotating shaft (2), so the The accommodating space (23) and the outlet (51) are still communicated with each other. In actual implementation, an appropriate drainage device can be connected to the outlet (51) to concentrate the used cooling fluid, but this situation is not shown in the drawings. Since the through hole (33) is closer to the closed end (22), the cooling fluid can cool the shaft (2) over the entire length of the shaft member (3), ensuring the cooling effect of the cooling fluid on the shaft (2). , to avoid that when the perforation (33) is closer to the open end (21), the cooling fluid leaves the container from the open end (21) as soon as it enters the accommodation space (23) from the perforation (33). The space (23) is placed, and a sufficient cooling effect cannot be produced for the rotating shaft (2).
請參閱第二圖及下表一，為了更清楚的展示該馬達轉軸冷卻裝置的有利功效，以下表一的參數進行模擬。其中：雷諾數(Reynolds number,RE)為無因次參數；Tw為該轉軸(2)內壁的壁溫，單位為克爾文；Tin為該流道(35)進口溫度，單位為克爾文；Tout為該流道(35)出口溫度，單位為克爾文；Tf為該冷卻流體參考溫度，單位為克爾文；熱通量為輸入熱通量，單位為瓦/(公尺*公尺)；該冷卻流體熱傳導係數的單位為瓦/(公尺*克爾文)；水力直徑的單位為公尺；努塞爾數(熱傳係數)為無因次參數。 Please refer to Figure 2 and Table 1 below. In order to more clearly demonstrate the beneficial effect of the motor shaft cooling device, the parameters in Table 1 below are simulated. Among them: Reynolds number (RE) is a dimensionless parameter; Tw is the wall temperature of the inner wall of the rotating shaft (2), the unit is Kervin; T in is the inlet temperature of the flow channel (35), the unit is Kerr Wen; T out is the outlet temperature of the flow channel (35), the unit is Kelvin; T f is the reference temperature of the cooling fluid, the unit is Kelvin; the heat flux is the input heat flux, the unit is W/(meter* meters); the unit of heat transfer coefficient of the cooling fluid is watts/(meter * Kelvin); the unit of hydraulic diameter is meters; the Nusselt number (heat transfer coefficient) is a dimensionless parameter.
請參閱第七圖至第九圖，並請搭配第二圖及上表一。第七圖對應例一，為一習知技術[沒有所述穿孔(33)]於RE=10000時之模擬結果；第八圖對應例二，為本發明缺少該鰭翼(34)時的一第二實施例、且RE=10000時之模擬結 果；第九圖對應例三，為本發明之該第一實施例於RE=10000時之模擬結果。在第七圖中，該習知技術由於沒有所述穿孔(33)，該冷卻流體會被直接送至該轉軸(2)的該封閉端(22)，因此藍色低溫區域會集中在該轉軸(2)的該封閉端(22)，也就是第七圖的右側；在第八圖中，由於所述穿孔(33)設置於該軸件(3)的後半段，該冷卻流體可以從所述穿孔(33)離開該軸件(3)而冷卻該轉軸(2)，擴大藍色低溫區域；在第九圖中，該冷卻流體受到該鰭翼(34)影響而擴大冷卻區域，不僅藍色低溫區域擴大，該轉軸(2)接近該開放端(21)處也幾乎不存在綠色區域了。從第七圖至第九圖及上表一中可以看出，本發明可以有效擴大被降溫的區域，使降溫情況更平均，且努塞爾數可以有效提升約22.8%。上表一中，例一至例三對應相對比例的欄位，分別指的是例一至例三之努塞爾數，與例一之努塞爾數的相對比例。 Please refer to Figures 7 to 9, along with Figure 2 and Table 1 above. Figure 7 corresponds to Example 1, which is a simulation result of a conventional technique [without the perforation (33)] at RE=10000; Figure 8 corresponds to Example 2, which is a simulation result of the present invention without the fin (34) The second embodiment, and the simulation result when RE=10000 Figure 9 corresponds to Example 3, which is the simulation result of the first embodiment of the present invention when RE=10000. In the seventh figure, since the conventional technology does not have the perforation (33), the cooling fluid will be directly sent to the closed end (22) of the rotating shaft (2), so the blue low temperature area will be concentrated on the rotating shaft The closed end (22) of (2), that is, the right side of the seventh figure; in the eighth figure, since the perforation (33) is provided in the latter half of the shaft member (3), the cooling fluid can flow from all The perforation (33) leaves the shaft (3) and cools the shaft (2), expanding the blue low temperature area; in the ninth figure, the cooling fluid is affected by the fin (34) to expand the cooling area, not only the blue The color low temperature area expands, and there is almost no green area where the rotating shaft (2) is close to the open end (21). As can be seen from Figures 7 to 9 and Table 1 above, the present invention can effectively expand the area to be cooled, so that the cooling situation is more even, and the Nusselt number can be effectively increased by about 22.8%. In Table 1 above, the columns corresponding to the relative proportions of Examples 1 to 3 refer to the relative proportions of the Nusselt numbers of Examples 1 to 3 and the Nusselt numbers of Example 1.
請參閱第十圖至第十二圖，並請搭配第二圖及上表一。第十圖對應例四，為該習知技術[沒有所述穿孔(33)]於RE=20000時之模擬結果；第十一圖對應例五，為本發明之該第二實施例、且RE=20000時之模擬結果；第十二圖對應例六，為本發明之該第一實施例於RE=20000時之模擬結果。與RE=10000時的情況類似，從第十圖至第十二圖及上表一中可以看出，本發明可以有效擴大被降溫的區域，使降溫情況更平均，且努塞爾數可以有效提升約24.52%。上表一中，例四至例六對應相對比例的欄位，分別指的是例四至例六之努塞爾數，與例四之努塞爾數的相對比例。 Please refer to Figure 10 to Figure 12, and please match Figure 2 and Table 1 above. Figure 10 corresponds to Example 4, which is the simulation result of the prior art [without the perforation (33)] at RE=20000; Figure 11 corresponds to Example 5, which is the second embodiment of the present invention, and RE The simulation result when RE=20000; the twelfth figure corresponds to Example 6, which is the simulation result when RE=20000 according to the first embodiment of the present invention. Similar to the situation when RE=10000, it can be seen from the tenth to the twelfth figures and the above table 1 that the present invention can effectively expand the area to be cooled, so that the cooling situation is more uniform, and the Nusselt number can be effectively An increase of about 24.52%. In Table 1 above, the columns corresponding to the relative proportions of Examples 4 to 6 refer to the relative proportions of the Nusselt numbers of Examples 4 to 6 and the Nusselt numbers of Example 4, respectively.
無論是RE=10000、該冷卻流體流量較小時，或是RE=20000、該冷卻流體流量較大時，都可以看出本發明確實具有提升該冷卻流體對該轉軸(2)冷卻效果的有利功效。 Whether RE=10000, when the flow rate of the cooling fluid is small, or RE=20000, when the flow rate of the cooling fluid is large, it can be seen that the present invention has the advantage of improving the cooling effect of the cooling fluid on the rotating shaft (2). effect.
綜合上述實施例之說明，當可充分瞭解本發明之操作、使用及本發明產生之功效，惟以上所述實施例僅係為本發明之較佳實施例，當不能以此 限定本發明實施之範圍，即依本發明申請專利範圍及發明說明內容所作簡單的 等效變化與修飾，皆屬本發明涵蓋之範圍內。 Based on the descriptions of the above embodiments, the operation, use and effects of the present invention can be fully understood. However, the above-mentioned embodiments are only preferred embodiments of the present invention, and should not be regarded as such. The scope of the implementation of the present invention is limited, that is, a simple description is made according to the scope of the patent application of the present invention and the content of the description of the invention. Equivalent changes and modifications are all within the scope of the present invention.
1:殼體 1: Shell
2:轉軸 2: Spindle
21:開放端 21: Open Ends
22:封閉端 22: closed end
23:容置空間 23: Accommodating space
3:軸件 3: Shaft
31:前端 31: Front end
311:傳動鍵 311: Transmission key
32:後端 32: Backend
321:定位導翼 321: Positioning guide wing
33:穿孔 33: Perforation
34:鰭翼 34: Fins
35:流道 35: runner
4:軸封 4: Shaft seal
41:入口 41: Entrance
5:罩體 5: cover body
51:出口 51: Export
Claims (10)
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| TW490517B (en) * | 1997-11-28 | 2002-06-11 | Barmag Barmer Maschf | Apparatus and method for cooling the bearings of a godet for advancing and guiding yarn |
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| TW202230935A (en) | 2022-08-01 |
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