TWM628272U

TWM628272U - Centrifugal axial fan and its cooling system

Info

Publication number: TWM628272U
Application number: TW111201720U
Authority: TW
Inventors: 孫頌偉; 黃井平; 李梓焯; 劉峰
Original assignee: 奇鋐科技股份有限公司
Priority date: 2022-02-18
Filing date: 2022-02-18
Publication date: 2022-06-11

Abstract

一種離心式軸流風機及其散熱系統，包含一風機外殼具有一風機腔室，一離心葉輪經由一葉輪座懸吊在該風機腔室內，該離心葉輪具有複數葉片及分別位於該葉片之間連通該風機腔室的一傾斜流道，該風機腔室經由一導流框體的一框體通道連通該散熱系統的一長形出風口，藉由該離心葉輪以離心方式吸入流體通過該傾斜流道，並藉由該傾斜流道使該流體傾斜流動至該風機腔室並經過該導流框體以軸向流出該長形出風口，進而達到低噪音及離心渦流轉軸流及減少流量損失之功效者。 A centrifugal axial flow fan and a heat dissipation system thereof, comprising a fan casing with a fan chamber, a centrifugal impeller suspended in the fan chamber through an impeller seat, the centrifugal impeller having a plurality of blades and communicating between the blades respectively An inclined flow channel of the fan chamber, the fan chamber is connected to an elongated air outlet of the heat dissipation system through a frame channel of a guide frame, and the centrifugal impeller sucks fluid through the inclined flow in a centrifugal manner. Through the inclined flow channel, the fluid flows obliquely to the fan chamber and passes through the guide frame to axially flow out of the long air outlet, thereby achieving low noise and centrifugal eddy current to rotate axial flow and reduce flow loss. Efficient.

Description

離心式軸流風機及其散熱系統 Centrifugal axial fan and its cooling system

本創作係有關於一種風機散熱領域，尤其指一種離心渦流轉軸流的風機及其散熱系統。 This creation is related to the field of fan cooling, especially a centrifugal eddy current rotating axial flow fan and its cooling system.

風機為流體機械的一種，其作用為將機械能轉化為流體動能，目的在克服管路阻力及能量損耗，以便能輸送流體至特定地點。而風機大致分為軸流式、離心式與橫流式三種；一般軸流式風機的空氣係沿著一軸流扇輪的一軸方向進風與出風，氣流係從葉片的上緣進入然後從葉片的下緣流出，致使該軸流扇輪的輪轂下方為死區沒有氣流流通；而離心式風機之動作原理與離心泵相同，空氣沿著一離心葉輪的軸方向通過一渦殼的進氣口流入該離心葉輪，並在離心葉輪旋轉運作產生的離心作用下，使空氣沿著其旋轉的切線方向的從該離心葉輪的外圍進入該渦殼內的一渦形室，然後經過該渦形室後從該渦殼的排氣口排出。 Fan is a type of fluid machinery, its function is to convert mechanical energy into fluid kinetic energy, the purpose is to overcome pipeline resistance and energy loss, so that fluid can be transported to a specific location. Fans are roughly divided into three types: axial flow, centrifugal and cross flow; generally, the air of an axial flow fan enters and exits along one axis of an axial flow fan wheel, and the airflow enters from the upper edge of the blade and then flows from the The lower edge of the blade flows out, resulting in a dead zone below the hub of the axial flow fan wheel without airflow; while the action principle of a centrifugal fan is the same as that of a centrifugal pump, the air passes through the intake air of a volute along the axial direction of a centrifugal impeller. The inlet flows into the centrifugal impeller, and under the centrifugal action generated by the rotating operation of the centrifugal impeller, the air enters a scroll chamber in the volute from the periphery of the centrifugal impeller along the tangential direction of its rotation, and then passes through the scroll. After the chamber is discharged from the exhaust port of the volute.

因此當在不同的系統空間須設置不同形式的風機，例如一般箱形空間較寬裕則採用軸流風機，而窄小扁形空間大多使用離心風機。 Therefore, different forms of fans must be installed in different system spaces. For example, axial fans are used in general box-shaped spaces, while centrifugal fans are mostly used in narrow and flat spaces.

如第4A-4C圖所示，一系統機殼51具有一槽511及一系統內空間512，該槽511具有一槽底5111將槽511與系統內空間512隔離，槽底5111設有一窄長出風口513連通該槽511與該系統內空間512。一軸流風機52放置在槽511內，由於該軸流風機52的整體尺寸(例如60mm×60mm×25mm)大於系統的窄長出風口513(例如90mm×20mm)，造成軸流風機52的軸流扇輪521只有小部分對應窄長出風口513，該軸流扇輪521的大部分對應到該槽底5111。 As shown in Figs. 4A-4C, a system case 51 has a slot 511 and a system interior space 512, the slot 511 has a slot bottom 5111 to isolate the slot 511 from the system interior space 512, and the slot bottom 5111 has a narrow length The air outlet 513 communicates with the groove 511 and the space 512 in the system. An axial flow fan 52 is placed in the groove 511, because the overall size of the axial flow fan 52 (for example, 60mm×60mm×25mm) is larger than the narrow length of the system The air outlet 513 (eg, 90 mm×20 mm) causes only a small part of the axial fan wheel 521 of the axial fan 52 to correspond to the narrow and long air outlet 513 , and most of the axial fan wheel 521 corresponds to the groove bottom 5111 .

該軸流扇輪521包括一輪轂5211及複數葉片5212位於該輪轂5211的周圍。當該軸流風機52的軸流扇輪521運轉時，輪轂5211下方為盲區(或稱死區)沒有氣流流通，無法使氣流通過該窄長出風口513，從葉片5212下緣流出的大部分氣流受到槽底5111的阻擋不僅不會通過該窄長出風口513，且反向往該軸流風機52流動並與持續流出的氣流撞擊一起成為亂流，造成大部分的氣流無法從系統的窄長出風口513流出。 The axial fan wheel 521 includes a hub 5211 and a plurality of blades 5212 located around the hub 5211 . When the axial flow fan wheel 521 of the axial flow fan 52 is running, there is no air flow in the blind zone (or dead zone) below the hub 5211, so the air flow cannot pass through the long and narrow air outlet 513, and most of the air flow out from the lower edge of the blade 5212 The air flow is blocked by the groove bottom 5111 and not only does not pass through the narrow and long air outlet 513, but also flows in the opposite direction to the axial flow fan 52 and collides with the continuous outflow air flow to form a turbulent flow, resulting in that most of the air flow cannot pass through the narrow and long air of the system. The air outlet 513 flows out.

另外，若將軸流風機52更換為橫流風機直接對應該窄長出風口513以提升出風面積佔比時，由於橫流風機的流體沿的橫流扇的徑向流入最後再沿橫流扇徑向流出，將產生很大的噪音。 In addition, if the axial-flow fan 52 is replaced with a cross-flow fan that directly corresponds to the narrow and long air outlet 513 to increase the air outlet area ratio, the fluid of the cross-flow fan flows in the radial direction of the cross-flow fan and finally flows out along the radial direction of the cross-flow fan. , will produce a lot of noise.

是以，要如何解決上述之問題與缺失，即為本案之創作人與從事此行業之相關廠商所亟欲研究改善之方向所在者。 Therefore, how to solve the above-mentioned problems and deficiencies is the direction that the creator of this case and the relevant manufacturers engaged in this industry are eager to research and improve.

為改善上述之問題，本創作之一目的提供一種在有限的系統空間提供低噪音，且使流體順著一系統的出風口軸向流出之離心式軸流風機及其散熱系統。 In order to improve the above-mentioned problems, one objective of the present invention is to provide a centrifugal axial flow fan and its cooling system that provide low noise in a limited system space and allow fluid to flow out axially along the air outlet of a system.

本創作之另一目的提供一種實現離心渦流轉軸流之離心式軸流風機及其散熱系統。 Another object of the present invention is to provide a centrifugal axial fan and a heat dissipation system for realizing centrifugal eddy current rotating axial flow.

本創作之再一目的提供一種離心式軸流風機在每兩葉片之間具有一傾斜流道使流體從離心葉輪傾斜流動至風機腔室以實現減少氣流改變方向後的流量損失。 Another object of the present invention is to provide a centrifugal axial flow fan with an inclined flow channel between every two blades, so that the fluid flows obliquely from the centrifugal impeller to the fan chamber, so as to reduce the flow loss after the airflow changes direction.

為達上述之目的，本創作提供一種適用於一具有一長形出風口的系統容器，該離心式軸流風機包括：一風機外殼包括一本體及一導流框體，該本體具有一進風側及一出風側，該進風側及該出風側之間界定一風機腔室，該導流框體設置在該本體的出風側毗鄰該系統容器的長形出風口，且具有一對接側及一出口側及一導風面，該對接側及該出口側分別在該導流框體的兩側，該導風面位於該導流框體內側從該對接側朝內傾斜延伸到該出口側並界定一框體通道連通該風機腔室及該長形出風口；一葉輪座包括一座體及兩懸吊件分別從該座體的一外周朝遠離該座體的方向延伸有一受接端與該風機外殼連接，以支撐該葉輪座位於該風機腔室及該框體通道內；一離心葉輪設置在該葉輪座上且位於該風機外殼的該進風口之下，係包含一葉輪上盤及一葉輪下盤，該葉輪上盤及該葉輪下盤之間具有複數葉片，且該等葉片間分別具有一傾斜流道由該離心葉輪的一中心向該離心葉輪的一外緣朝下傾斜連通該風機腔室，藉由該傾斜流道以令被該離心葉輪吸入的一氣流向下傾斜流入該風機腔室，且通過該框體通道被該導風面引導往該長形出風口流出。 In order to achieve the above-mentioned purpose, the present invention provides a system container suitable for a long air outlet. The centrifugal axial flow fan includes: a fan casing includes a main body and a flow guide frame, and the main body has an air inlet. side and an outlet side, a fan chamber is defined between the inlet side and the outlet side, the guide frame is arranged on the outlet side of the main body adjacent to the elongated outlet of the system container, and has a The butt side and an outlet side and a wind guide surface, the butt side and the outlet side are respectively on both sides of the guide frame body, and the wind guide surface is located inside the guide frame body and extends inwardly from the butt side to the The outlet side defines a frame body channel that communicates with the fan chamber and the elongated air outlet; an impeller seat includes a seat body and two suspension members respectively extending from an outer circumference of the seat body to a direction away from the seat body with a receiving The connecting end is connected with the fan casing to support the impeller seat in the fan chamber and the frame channel; a centrifugal impeller is arranged on the impeller seat and under the air inlet of the fan casing, and includes an impeller The upper plate and a lower plate of the impeller have a plurality of blades between the upper plate of the impeller and the lower plate of the impeller, and there is an inclined flow channel between a center of the centrifugal impeller and an outer edge of the centrifugal impeller. The fan chamber is connected with a downward inclination, and an air flow sucked by the centrifugal impeller is inclined downward and flows into the fan chamber through the inclined flow channel, and is guided by the air guide surface to the elongated outlet through the frame body channel. Outflow.

本創作同時提供一種具有離心式軸流風機之散熱系統，包括：一系統容器，具有一容納槽及一容器空間，該容納槽具有一槽底與該容器空間隔離，且該槽底的一局部區域設置一長形出風口連通該容器空間，該容器空間設有一散熱單元位於該容納槽之後；一離心式軸流風機，設置在該容納槽且包含：一風機外殼，包括一本體及一導流框體，該本體具有一進風側及一出風側，該進風側及該出風側之間界定一風機腔室，該導流框體設置在該本體的出風側毗鄰該槽底的長形出風口，且具有一對接側及一出口側及一導風面，該對接側及該出口側分別在該導流框體的兩側，該導風面從該對接側傾斜的延伸到該出口側並界定一框體通道連通該風機腔室及該長形出風口；一葉輪座，包括一座體及兩懸吊件分別從該座體的一外周朝遠離該座體的方向延伸有一受接端與該風機外殼的該本體連接，以支撐該葉輪座位於該風機腔室及該框體通道內；一離心葉輪，設置在該座體上且位於該風機外殼的該進風口之下，係包含一葉輪上盤及一葉輪下盤具有一輪轂，該葉輪上盤及該葉輪下盤之間具有複數葉片，且該每兩葉片間分別具有一傾斜流道由該輪轂的一外側向該離心葉輪的一外緣朝下傾斜形成且連通該風機腔室，藉由該傾斜流道以令被該離心葉輪吸入的一氣流向下傾斜流入該風機腔室，且通過該框體通道被該導風面引導通過該長形出風口進入該容器空間。 The present invention also provides a heat dissipation system with a centrifugal axial flow fan, including: a system container, which has an accommodating groove and a container space, the accommodating groove has a groove bottom and is isolated from the container space, and a part of the groove bottom is A long-shaped air outlet is arranged in the area to communicate with the container space, and the container space is provided with a heat dissipation unit located behind the accommodating groove; a centrifugal axial flow fan is disposed in the accommodating groove and includes: a fan casing, including a main body and a guide A flow frame body, the body has an air inlet side and an air outlet side, a fan chamber is defined between the air inlet side and the air outlet side, and the guide frame body is arranged on the air outlet side of the main body adjacent to the slot The long air outlet at the bottom has a butt side, an outlet side and an air guide surface, the butt side and the outlet side are respectively on both sides of the air guide frame, and the air guide surface is inclined from the butt side. extends to the exit side and defines a frame The body passage communicates with the fan chamber and the elongated air outlet; an impeller seat, including a seat body and two suspension pieces, respectively extend from an outer circumference of the seat body toward a direction away from the seat body. A receiving end and the fan shell The main body is connected to support the impeller seat in the fan chamber and the frame channel; a centrifugal impeller, disposed on the seat body and under the air inlet of the fan casing, includes an impeller upper plate And an impeller lower disk has a hub, there are a plurality of blades between the impeller upper disk and the impeller lower disk, and there is an inclined flow channel between each two blades from an outer side of the hub to an outer edge of the centrifugal impeller The fan chamber is formed obliquely downward and communicates with the fan chamber, and an air flow sucked by the centrifugal impeller is inclined downward and flows into the fan chamber through the inclined flow channel, and is guided by the air guide surface through the frame body channel through the fan chamber. The elongated air outlet enters the container space.

前述框體通道從該對接側朝該出口側漸縮貫通，該對接側係對接該本體的出風側毗鄰該槽底，該導風面係為一傾斜面或一凹弧面。 The aforesaid frame channel is tapered and penetrated from the abutting side toward the outlet side. The abutting side is connected to the air outlet side of the main body and is adjacent to the groove bottom. The air guiding surface is an inclined surface or a concave arc surface.

前述本體具有一頂壁位於該進風側，該頂壁設有一進風口及兩連接部，該進風口係連通該風機腔室，該兩連接部係連接該葉輪座的受接端。 The body has a top wall located on the air inlet side, the top wall is provided with an air inlet and two connecting parts, the air inlet is connected to the fan chamber, and the two connecting parts are connected to the receiving end of the impeller seat.

前述葉輪上盤位於該等葉片上方且由該離心葉輪的一中心向該離心葉輪的一外緣朝下傾斜設置，並具有一流體吸入口係對應該風機外殼的進風口；該葉輪下盤具有一斜面供該等葉片設置，且該斜面由該由該輪轂的該外側向該離心葉輪的一外緣朝下傾斜設置配合該葉輪上盤以構成該等傾斜流道。 The above-mentioned upper plate of the impeller is located above the blades and is inclined downward from a center of the centrifugal impeller to an outer edge of the centrifugal impeller, and has a fluid suction port corresponding to the air inlet of the fan casing; the lower plate of the impeller has An inclined surface is provided for the blades to be disposed, and the inclined surface is inclined downward from the outer side of the hub to an outer edge of the centrifugal impeller and cooperates with the upper plate of the impeller to form the inclined flow channels.

前述頂壁於該進風口邊緣設有朝該風機腔室彎折的一彎折部，該彎折部於該風機腔室內形成一環型凹槽，且該離心葉輪上盤於該流體吸入口的一邊緣朝該頂壁凸伸有一凸環配合該頂壁的該環型凹槽。 The aforesaid top wall is provided with a bending part on the edge of the air inlet which is bent towards the fan chamber, the bending part forms an annular groove in the fan chamber, and the centrifugal impeller is mounted on the fluid suction port. An edge protrudes toward the top wall with a protruding ring matching the annular groove of the top wall.

前述風機外殼設有一外罩遮蓋該進風側，該外罩設有一透氣網部對應該進風側，該透氣網部由複數透孔構成，且導流框體與該槽底之間設有一框形墊片。 The aforementioned fan casing is provided with an outer cover to cover the air inlet side, the outer cover is provided with a ventilating mesh portion corresponding to the air intake side, the ventilating mesh portion is composed of a plurality of through holes, and a frame-shaped frame is arranged between the guide frame body and the groove bottom. gasket.

B:離心式軸流風機 B: Centrifugal axial flow fan

10:風機外殼 10: Fan housing

11:本體 11: Ontology

111:進風側 111: Inlet side

112:出風側 112: Outlet side

113:風機腔室 113: Fan chamber

114:頂壁 114: Top Wall

1141:進風口 1141: air inlet

1142:連接部 1142: Connector

1143:彎折部 1143: Bending part

1144:環型凹槽 1144: Ring groove

12:導流框體 12: guide frame

121:對接側 121: Butt side

122:出口側 122: Exit side

123:導風面 123: Wind guide surface

124:框體通道 124: Frame channel

15:外罩 15: cover

151:透氣網部 151: Breathable mesh

16:框形墊片 16: Frame gasket

20:葉輪座 20: Impeller seat

21:座體 21: seat body

211:軸筒 211: Axle barrel

22:懸吊件 22: Suspension pieces

221:受接端 221: Receiver

30:離心葉輪 30: Centrifugal impeller

31:葉輪上盤 31: Impeller upper plate

311:流體吸入口 311: Fluid suction port

3111:凸環 3111: convex ring

32:葉輪下盤 32: Impeller lower plate

321:輪轂 321: Wheels

322:斜面 322: Bevel

33:葉片 33: Blades

331:進風緣 331: Inlet edge

332:出風緣 332: The Wind

34:傾斜流道 34: Inclined runner

40:系統容器 40: System container

41:容納槽 41: accommodating slot

411:槽底 411: groove bottom

413:長形出風口 413: Long air outlet

42:容器空間 42: Container space

43:散熱單元 43: Cooling unit

A:軸向 A: Axial

R:徑向 R: radial

第1A圖為本創作離心式軸流風機立體分解示意圖；第1B圖為本創作離心式軸流風機立體組合示意圖；第1C圖為本創作離心式軸流風機分解剖視示意圖；第1D圖為本創作離心式軸流風機組合剖視示意圖；第2A圖為本創作離心葉輪局部剖視示意圖；第2B圖為本創作離心葉輪俯視示意圖；第2C圖為本創作風機外殼的本體另一視角示意圖；第3A圖為本創作散熱系統的立體分解示意圖；第3B圖為系統容器的俯視示意圖；第3C圖為本創作散熱系統的立體組合示意圖；第3D圖為第3C圖的3D-3D剖線對風機外殼及容納槽的局部剖視示意圖；第3E圖為本創作流體流動方向示意圖；第4A至4C圖為習知系統內軸流風機示意圖。 Figure 1A is a schematic diagram of a three-dimensional exploded view of a centrifugal axial flow fan; Figure 1B is a schematic diagram of a three-dimensional assembly of a centrifugal axial flow fan; Figure 1C is a schematic diagram of an exploded cross-sectional view of a centrifugal axial flow fan; Figure 1D Figure 2A is a schematic diagram of a partial cross-section of the centrifugal impeller of the creation; Figure 2B is a schematic top view of the centrifugal impeller of the creation; Figure 2C is a schematic diagram of another perspective of the fan casing of the creation ; Figure 3A is a three-dimensional exploded schematic diagram of the cooling system of the creation; Figure 3B is a schematic top view of the system container; Figure 3C is a schematic three-dimensional assembly of the cooling system of the creation; Figure 3D is the 3D-3D section line of Figure 3C A partial cross-sectional schematic diagram of the fan casing and the accommodating tank; Figure 3E is a schematic diagram of the flow direction of the fluid in the creation; Figures 4A to 4C are schematic diagrams of an axial flow fan in a conventional system.

本創作之上述目的及其結構與功能上的特性，將依據所附圖式之較佳實施例予以說明。 The above-mentioned purpose of the present invention and its structural and functional characteristics will be described with reference to the preferred embodiments of the accompanying drawings.

請參考第1A圖為本創作離心式軸流風機立體分解示意圖；第1B圖為本創作離心式軸流風機立體組合示意圖；第1C圖為本創作離心式軸流風機分解剖視示意圖；第1D圖為本創作離心式軸流風機組合剖視示意圖；第2A圖為本創作離心葉輪局部剖視示意圖；第2B圖為本創作離心葉輪俯視示意圖；第2C圖為本創作風機外殼的本體另一視角示意圖。如圖所示，一離心式軸流風機B包括一風機外殼10容納一葉輪座20及一離心葉輪30，該風機外殼10包括一本體11及一導流框體12，該本體11的兩側分別具有一進風側111及一出風側112，該進風側111及該出風側112之間界定一風機腔室113在該本體11內。且該本體11具有一頂壁114位於該進風側111，該頂壁114設有一進風口1141及兩連接部1142，該進風口1141位於該頂壁114的大致中央處並連通該風機腔室113。該兩連接部1142分別位於該進風口1141的兩旁從該頂壁114往該風機腔室113內凸出。再者，該頂壁114於該進風口1141的邊緣設有朝該風機腔室113彎折的一彎折部1143，該彎折部1143於該風機腔室113內形成一環型凹槽1144。 Please refer to Figure 1A, which is a schematic diagram of a three-dimensional exploded view of the centrifugal axial flow fan; Figure 1B is a schematic diagram of a three-dimensional assembly of the centrifugal axial flow fan; Figure 1C is a schematic diagram of an exploded sectional view of the centrifugal axial flow fan; Figure 1D Figure 2A is a schematic diagram of a partial cross-section of the centrifugal impeller; Figure 2B is a schematic top view of the centrifugal impeller; Figure 2C is the other side of the body of the fan casing Schematic diagram of the angle of view. As shown in the figure, a centrifugal axial flow fan B includes A fan casing 10 accommodates an impeller seat 20 and a centrifugal impeller 30 , the fan casing 10 includes a main body 11 and a guide frame 12 , and two sides of the main body 11 respectively have an air inlet side 111 and an air outlet side 112 , a fan chamber 113 is defined in the main body 11 between the air inlet side 111 and the air outlet side 112 . The main body 11 has a top wall 114 located on the air inlet side 111 , the top wall 114 is provided with an air inlet 1141 and two connecting parts 1142 , the air inlet 1141 is located at the approximate center of the top wall 114 and communicates with the fan chamber. 113. The two connecting portions 1142 are respectively located on both sides of the air inlet 1141 and protrude from the top wall 114 into the fan chamber 113 . Furthermore, the top wall 114 has a bending portion 1143 bent toward the fan chamber 113 at the edge of the air inlet 1141 . The bending portion 1143 forms an annular groove 1144 in the fan chamber 113 .

該導流框體12設置在該本體11的出風側112，具有一對接側121、一出口側122及一導風面123。該對接側121係對接該本體11的出風側112。該導風面123係為一傾斜面或一凹弧面)位於該導流框體12的一內側並從該對接側121往該導流框體12內傾斜或呈圓弧下凹的延伸到該出口側122，且界定一框體通道124連通該風機腔室113，並從該對接側121朝該出口側122漸縮的貫通。如此，該導風面123得以導引該風機腔室113內的氣流軸向的經過該出口側122。 The air guide frame 12 is disposed on the air outlet side 112 of the main body 11 , and has a docking side 121 , an outlet side 122 and an air guide surface 123 . The docking side 121 is docked with the air outlet side 112 of the main body 11 . The wind guide surface 123 is an inclined surface or a concave arc surface) located at an inner side of the guide frame body 12 and extends from the abutment side 121 to the inside of the guide frame body 12 slopingly or concavely in a circular arc to the The outlet side 122 defines a frame passage 124 that communicates with the fan chamber 113 and tapers through from the butt side 121 toward the outlet side 122 . In this way, the wind guide surface 123 can guide the airflow in the fan chamber 113 to pass through the outlet side 122 in the axial direction.

該葉輪座20包括一座體21及兩懸吊件22分別從該座體21的一外周朝遠離該座體21的方向延伸有一受接端221，該受接端221例如為一凸筒對應連接該本體11的頂壁114的兩連接部1142。藉此，以支撐該葉輪座20懸吊設置在該風機腔室113及該框體通道124內。該連接部1142及該受接端221之間以一連結手段例如螺鎖或膠接或卡合等結合一起。該座體21上凸設一軸筒211用以容設至少一軸承，並供一馬達定子(包括一絕緣架組夾設一矽鋼片組，及一繞線組纏繞該絕緣價組及該矽鋼片組)套設。在本實施雖然表示該葉輪座20與該導流框體12為個別分開的零件，但是不侷限於此。在其他的替代實施，該葉輪座20 與該導流框體12係為連接一體的構件，例如葉輪座20的兩懸吊件22的受接端221連接該導流框體12形成一體。 The impeller base 20 includes a base body 21 and two suspension members 22 respectively extending from an outer circumference of the base body 21 in a direction away from the base body 21 , and a receiving end 221 . The receiving end 221 is, for example, a convex cylinder correspondingly connected The two connecting portions 1142 of the top wall 114 of the main body 11 . Thereby, the impeller seat 20 is suspended in the fan chamber 113 and the frame body channel 124 by supporting the impeller seat 20 . The connecting portion 1142 and the receiving end 221 are joined together by a connecting means such as screw lock, glue or snap fit. A shaft barrel 211 protrudes from the base body 21 for accommodating at least one bearing, and for a motor stator (including an insulating frame set sandwiching a silicon steel sheet set, and a winding set for winding the insulating valence group and the silicon steel sheet group) set. In this embodiment, although the impeller seat 20 and the guide frame body 12 are shown as separate parts, it is not limited to this. In other alternative implementations, the impeller seat 20 The guide frame body 12 is a component connected integrally, for example, the receiving ends 221 of the two suspension members 22 of the impeller seat 20 are connected to the guide frame body 12 to form an integral body.

該離心葉輪30設置在該葉輪座20的座體21上，且位於該風機外殼10的該進風口1141的下方。該離心葉輪30係包含一葉輪上盤31及一葉輪下盤32，該葉輪上盤31及該葉輪下盤32之間具有複數葉片33。該葉輪上盤31位於該等葉片33上方且由該離心葉輪30的一中心向該離心葉輪30的一外緣朝下傾斜設置，並具有一流體吸入口311對應該風機外殼10的頂壁114的進風口1141。該流體吸入口311的一邊緣朝該頂壁114凸伸形成一凸環3111配合該頂壁114的環型凹槽1144。藉由該葉輪上盤31的凸環3111與該頂壁114的該環型凹槽1144以凹凸配合的設置形成一蜿蜒間隙，以防止從該風機外殼10的進風口1141吸入的部分氣流未經過離心葉輪30就直接流入風機腔室113。 The centrifugal impeller 30 is disposed on the seat body 21 of the impeller seat 20 and located below the air inlet 1141 of the fan casing 10 . The centrifugal impeller 30 includes an impeller upper disk 31 and an impeller lower disk 32 , and a plurality of blades 33 are arranged between the impeller upper disk 31 and the impeller lower disk 32 . The impeller upper plate 31 is located above the blades 33 and is inclined downward from a center of the centrifugal impeller 30 to an outer edge of the centrifugal impeller 30 , and has a fluid suction port 311 corresponding to the top wall 114 of the fan casing 10 The air inlet 1141. An edge of the fluid suction port 311 protrudes toward the top wall 114 to form a convex ring 3111 to fit the annular groove 1144 of the top wall 114 . The convex ring 3111 of the upper disk 31 of the impeller and the annular groove 1144 of the top wall 114 are arranged in a concave and convex arrangement to form a meandering gap, so as to prevent the partial airflow drawn from the air inlet 1141 of the fan casing 10 from not being exhausted. After passing through the centrifugal impeller 30 , it directly flows into the fan chamber 113 .

再者，該葉輪下盤32具有一輪轂321及一斜面322。該輪轂321內設有一軸桿及一馬達轉子(包括一磁環)，該軸桿插設該座體21上的軸筒211內的軸承，以支撐該離心葉輪30在該座體21上，並使該馬達轉子對應該軸筒211上的馬達定子。該斜面322由該輪轂321的一外側向該離心葉輪30的一外緣朝下傾斜設置。該等葉片33則設置在該斜面322並分佈在該輪轂321外周。藉由該葉輪下盤32的斜面322配合傾斜的葉輪上盤31，以在每兩葉片33間構成一傾斜流道34。該等傾斜流道34由該輪轂321的一外側向該離心葉輪30的一外緣朝下傾斜，並連通該風機腔室113。藉由該等傾斜流道34引導進入離心葉輪30的氣流向下傾斜流動至風機腔室113。 Furthermore, the impeller lower plate 32 has a hub 321 and an inclined surface 322 . The hub 321 is provided with a shaft and a motor rotor (including a magnetic ring), the shaft is inserted into the bearing in the shaft barrel 211 on the seat body 21 to support the centrifugal impeller 30 on the seat body 21, The motor rotor is made to correspond to the motor stator on the shaft barrel 211 . The inclined surface 322 is inclined downward from an outer side of the hub 321 to an outer edge of the centrifugal impeller 30 . The blades 33 are arranged on the inclined surface 322 and distributed on the outer circumference of the hub 321 . The inclined surface 322 of the lower plate 32 of the impeller cooperates with the upper plate 31 of the impeller to form an inclined flow channel 34 between every two blades 33 . The inclined flow channels 34 are inclined downward from an outer side of the hub 321 to an outer edge of the centrifugal impeller 30 and communicate with the fan chamber 113 . The airflow guided into the centrifugal impeller 30 by the inclined flow passages 34 flows obliquely downward to the fan chamber 113 .

前述每一葉片33具有一進風緣331毗鄰該輪轂321，及一出風緣332位於該離心葉輪30的外緣。該進風緣331係從該離心葉輪上盤31朝該離心葉輪下盤 32傾斜，並對應該流體吸入口311，以引導從該風機外殼10的進風口1141吸入的氣流順暢地進入該傾斜流道34以提升入風量。 Each of the aforementioned blades 33 has an inlet edge 331 adjacent to the hub 321 , and an outlet edge 332 located at the outer edge of the centrifugal impeller 30 . The air inlet edge 331 is directed from the upper plate 31 of the centrifugal impeller toward the lower plate of the centrifugal impeller 32 is inclined and corresponds to the fluid suction port 311 to guide the air flow sucked in from the air inlet 1141 of the fan housing 10 to smoothly enter the inclined flow channel 34 to increase the intake air volume.

請繼續參考第3A圖為本創作散熱系統的立體分解示意圖；第3B圖為系統容器的俯視示意圖；第3C圖為本創作散熱系統的立體組合示意圖；第3D圖為第3C圖的3D-3D剖線對風機外殼及容納槽的局部剖視示意圖。如這些圖所示，一併參考前面的第1A-1D及2A-2C圖，一系統容器40具有一容納槽41及一容器空間42，該容器空間42設有一散熱單元43例如散熱器位於該容納槽41之後。該容納槽41具有一槽底411將該容納槽41與該容器空間42隔離，且該槽底411的一局部區域設置一長形出風口413連通該容器空間42。 Please continue to refer to Figure 3A for an exploded perspective view of the cooling system of the creation; Figure 3B is a schematic top view of the system container; Figure 3C is a schematic three-dimensional assembly of the cooling system of the creation; Figure 3D is the 3D-3D of Figure 3C A partial cross-sectional schematic diagram of the fan casing and the accommodating groove by the section line. As shown in these figures, referring to the previous figures 1A-1D and 2A-2C together, a system container 40 has a receiving groove 41 and a container space 42, and the container space 42 is provided with a heat dissipation unit 43 such as a heat sink located in the After the accommodating groove 41 . The accommodating groove 41 has a groove bottom 411 to isolate the accommodating groove 41 from the container space 42 , and an elongated air outlet 413 is provided in a partial area of the groove bottom 411 to communicate with the container space 42 .

前述的離心式軸流風機B係設置在該容納槽41內，令該導流框體12的出口側122毗鄰該系統容器40的槽底411，該導流框體12的框體通道124係連通該風機腔室113及該長形出風口413。在該風機外殼10設有一外罩15遮蓋該進風側111，該外罩15設有一由複數透孔構成的透氣網部151，該透氣網部151係對應該進風側111的該進風口1141，藉此防止異物通過該進風口1141進入該離心葉輪30。另外，在該導流框體12的出口側122與該槽底411之間設選擇有一框形墊片16，該框形墊片16由軟性材質例如塑膠或橡膠等構成，以提升離心式軸流風機B與該槽底411之間的密合度。 The aforementioned centrifugal axial flow fan B is arranged in the accommodating groove 41, so that the outlet side 122 of the guide frame 12 is adjacent to the groove bottom 411 of the system container 40, and the frame passage 124 of the guide frame 12 is The fan chamber 113 and the elongated air outlet 413 are communicated. The fan casing 10 is provided with an outer cover 15 to cover the air inlet side 111 , the outer cover 15 is provided with a ventilating mesh portion 151 composed of a plurality of through holes, and the ventilation mesh portion 151 corresponds to the air inlet 1141 of the air inlet side 111 , Thereby, foreign matter is prevented from entering the centrifugal impeller 30 through the air inlet 1141 . In addition, a frame-shaped gasket 16 is selected between the outlet side 122 of the guide frame 12 and the groove bottom 411 , and the frame-shaped gasket 16 is made of soft material such as plastic or rubber, so as to lift the centrifugal shaft. The tightness between the flow fan B and the groove bottom 411 .

請繼續參考第3E圖為本創作流體流動方向示意圖，本圖為了清楚說明氣流流動係省略系統容器40及外罩15的部分特徵。如圖所示，一併參考前述各圖，當離心式軸流風機B的離心葉輪30轉動時，在該等葉片33旋轉產生的離心作用下係吸引一氣流(如箭頭所示)沿著該離心葉輪30的一軸向A通過該外罩15的透氣網部151及該風機外殼10的進風口1141；然後通過該離心葉輪30的葉輪上盤31的流體吸入口311；然後朝該等葉片33旋轉的切線方向(也就是該離心葉輪30的一徑向R)並沿著該等傾斜流道34向下傾斜流入風機腔室113；然後從該風機腔室113經過該導流框體12的框體通道124；藉由該導流框體12的該導風面123引導該氣流通過該出口側122往該槽底411的長形出風口413流動，然後通過該長形出風口413進入該容器空間42內對該散熱單元43解熱。再者，因為該離心葉輪30旋轉吸引氣流進入風機腔室113，使得風機腔室113的氣壓大於容器空間42的氣壓，造成風機腔室113與該容器空間42產生壓差，幫助氣流軸向從該出口側122及該槽底411的長形出風口413流入該容器空間42。另外，流入及流出該離心葉輪30的氣流方向由軸向A改變為徑向R，藉由該等傾斜流道34減少改變流向的氣流的流量損失及降低噪音。 Please continue to refer to FIG. 3E , which is a schematic diagram of the flow direction of the created fluid. This figure omits some features of the system container 40 and the outer cover 15 for the purpose of clearly illustrating the airflow flow. As shown in the figures, referring to the previous figures, when the centrifugal impeller 30 of the centrifugal axial flow fan B rotates, a flow of air (as shown by the arrow) is attracted along the centrifugal action by the rotation of the blades 33. An axial direction A of the centrifugal impeller 30 passes through the ventilating mesh portion 151 of the outer cover 15 and the air inlet 1141 of the fan casing 10; and then passes through the impeller of the centrifugal impeller 30 The fluid suction port 311 of the upper disc 31; then the tangential direction of the rotation of the blades 33 (that is, a radial direction R of the centrifugal impeller 30) and the inclined flow channels 34 flow downward into the fan chamber 113; Then pass through the frame channel 124 of the guide frame 12 from the fan chamber 113 ; the air flow is guided through the outlet side 122 to the elongated groove bottom 411 by the wind guide surface 123 of the guide frame 12 . The air outlet 413 flows, and then enters the container space 42 through the elongated air outlet 413 to release heat to the heat dissipation unit 43 . Furthermore, because the centrifugal impeller 30 rotates and attracts airflow into the fan chamber 113, the air pressure in the fan chamber 113 is greater than the air pressure in the container space 42, resulting in a pressure difference between the fan chamber 113 and the container space 42, which helps the air flow axially from The outlet side 122 and the elongated air outlet 413 of the groove bottom 411 flow into the container space 42 . In addition, the direction of the airflow flowing into and out of the centrifugal impeller 30 is changed from the axial direction A to the radial direction R, and the flow loss and noise of the airflow changing the flow direction are reduced by the inclined flow passages 34 .

藉由上述的結構以實現離心渦流轉軸流的功效，並能在有限的系統空間提供低噪音及降低流量損失的效果。 With the above structure, the effect of centrifugal eddy current rotating axial flow can be realized, and the effect of low noise and flow loss reduction can be provided in a limited system space.

以上已將本創作做一詳細說明，惟以上所述者，僅為本創作之一較佳實施例而已，當不能限定本創作實施之範圍。即凡依本創作申請範圍所作之均等變化與修飾等，皆應仍屬本創作之專利涵蓋範圍。 The creation has been described in detail above, but the above is only a preferred embodiment of the creation, and should not limit the scope of implementation of the creation. That is, all equivalent changes and modifications made in accordance with the scope of the application of this creation shall still fall within the scope of the patent of this creation.

B:離心式軸流風機 B: Centrifugal axial flow fan

10:風機外殼 10: Fan housing

11:本體 11: Ontology

111:進風側 111: Inlet side

112:出風側 112: Outlet side

114:頂壁 114: Top Wall

1141:進風口 1141: air inlet

1143:彎折部 1143: Bending part

12:導流框體 12: guide frame

121:對接側 121: Butt side

122:出口側 122: Exit side

123:導風面 123: Wind guide surface

124:框體通道 124: Frame channel

20:葉輪座 20: Impeller seat

21:座體 21: seat body

211:軸筒 211: Axle barrel

22:懸吊件 22: Suspension pieces

221:受接端 221: Receiver

30:離心葉輪 30: Centrifugal impeller

31:葉輪上盤 31: Impeller upper plate

311:流體吸入口 311: Fluid suction port

3111:凸環 3111: convex ring

32:葉輪下盤 32: Impeller lower plate

321:輪轂 321: Wheels

322:斜面 322: Bevel

33:葉片 33: Blades

34:傾斜流道 34: Inclined runner

Claims

一種離心式軸流風機，適用於一具有一長形出風口的系統容器，該離心式軸流風機包括：一風機外殼，包括一本體及一導流框體，該本體具有一進風側及一出風側，該進風側及該出風側之間界定一風機腔室，該導流框體設置在該本體的出風側毗鄰該系統容器的長形出風口，且具有一對接側及一出口側及一導風面，該對接側及該出口側分別在該導流框體的兩側，該導風面從該對接側傾斜的延伸到該出口側且界定一框體通道連通該風機腔室及該長形出風口；一葉輪座，包括一座體及兩懸吊件分別從該座體的一外周朝遠離該座體的方向延伸有一受接端與該風機外殼的該本體連接，以支撐該葉輪座位於該風機腔室及該框體通道內；一離心葉輪，設置在該座體上且位於該風機外殼的該進風側之下，係包含一葉輪上盤及一葉輪下盤，該葉輪下盤具有一輪轂，該葉輪上盤及該葉輪下盤之間具有複數葉片，且該每兩葉片間分別具有一傾斜流道由該輪轂的一外側向該離心葉輪的一外緣朝下傾斜形成且連通該風機腔室，藉由該傾斜流道以令被該離心葉輪吸入的一氣流向下傾斜流入該風機腔室，且通過該框體通道被該導風面引導往該長形出風口流出。 A centrifugal axial flow fan, suitable for a system container with an elongated air outlet, the centrifugal axial flow fan comprises: a fan casing, including a main body and a flow guide frame, the main body has an air inlet side and an air outlet side, a fan chamber is defined between the air inlet side and the air outlet side, the guide frame is arranged on the air outlet side of the main body adjacent to the elongated air outlet of the system container, and has a butting side And an outlet side and an air guide surface, the butt side and the outlet side are respectively on both sides of the guide frame body, the wind guide surface extends obliquely from the butt side to the outlet side and defines a frame body channel communication the fan chamber and the elongated air outlet; an impeller seat, including a seat body and two suspension parts respectively extending from an outer circumference of the seat body toward a direction away from the seat body with a receiving end and the body of the fan casing connected to support the impeller seat in the fan chamber and the frame passage; a centrifugal impeller, disposed on the seat and located under the air inlet side of the fan casing, includes an impeller upper plate and a The lower disk of the impeller has a hub, there are a plurality of blades between the upper disk of the impeller and the lower disk of the impeller, and there is an inclined flow channel between each two blades from an outer side of the hub to the centrifugal impeller. An outer edge is inclined downward and is connected to the fan chamber, and an air flow sucked by the centrifugal impeller is inclined downward into the fan chamber through the inclined flow channel, and is passed through the frame channel by the air guide surface. Guide the outflow to the elongated air outlet.

如請求項1所述之離心式軸流風機，其中該框體通道從該對接側朝該出口側漸縮貫通，該對接側係對接該本體的出風側，該導風面係為一傾斜面或一凹弧面。 The centrifugal axial flow fan according to claim 1, wherein the frame passage is tapered and penetrated from the butting side toward the outlet side, the abutting side is connected to the air outlet side of the main body, and the wind guide surface is inclined face or a concave arc.

如請求項1所述之離心式軸流風機，其中該本體具有一頂壁位於該進風側，該頂壁設有一進風口及兩連接部，該進風口係連通該風機腔室，該兩連接部係連接該葉輪座的受接端。 The centrifugal axial flow fan according to claim 1, wherein the main body has a top wall on the air inlet side, the top wall is provided with an air inlet and two connecting parts, the air inlet is connected to the fan chamber, and the two The connecting part is connected to the receiving end of the impeller seat.

如請求項3所述之離心式軸流風機，其中該葉輪上盤位於該等葉片上方且由該離心葉輪的一中心向該離心葉輪的一外緣朝下傾斜設置，並具有一流體吸入口係對應該風機外殼的進風口；該葉輪下盤具有一斜面供該等葉片設置，且該斜面由該輪轂的該外側向該離心葉輪的一外緣朝下傾斜設置配合該離心葉輪上盤以構成該等傾斜流道。 The centrifugal axial flow fan according to claim 3, wherein the upper plate of the impeller is located above the blades and is inclined downward from a center of the centrifugal impeller to an outer edge of the centrifugal impeller, and has a fluid suction port It corresponds to the air inlet of the fan casing; the lower plate of the impeller has an inclined surface for the blades to be arranged, and the inclined surface is inclined downward from the outer side of the hub to an outer edge of the centrifugal impeller to cooperate with the upper plate of the centrifugal impeller to These inclined flow channels are formed.

如請求項4所述之離心式軸流風機，其中該頂壁於該進風口邊緣設有朝該風機腔室彎折的一彎折部，該彎折部於該風機腔室內形成一環型凹槽，且該葉輪上盤於該流體吸入口的一邊緣朝該頂壁凸伸有一凸環配合該頂壁的該環型凹槽。 The centrifugal axial flow fan according to claim 4, wherein the top wall is provided with a bent portion on the edge of the air inlet that is bent toward the fan chamber, and the bent portion forms an annular recess in the fan chamber A groove is formed on the upper surface of the impeller, and a protruding ring is protruded toward the top wall on an edge of the fluid suction port, which is matched with the annular groove of the top wall.

如請求項1所述之離心式軸流風機，其中該風機外殼設有一外罩遮蓋該進風側，該外罩設有一透氣網部對應該進風側，該透氣網部由複數透孔構成。 The centrifugal axial flow fan according to claim 1, wherein the fan casing is provided with an outer cover to cover the air inlet side, the outer cover is provided with a ventilating mesh portion corresponding to the air intake side, and the ventilating mesh portion is composed of a plurality of through holes.

一種具有離心式軸流風機之散熱系統，包括：一系統容器，具有一容納槽及一容器空間，該容納槽具有一槽底與該容器空間隔離，且該槽底的一局部區域設置一長形出風口連通該容器空間，該容器空間設有一散熱單元位於該容納槽之後；一離心式軸流風機，設置在該容納槽且包含：一風機外殼，包括一本體及一導流框體，該本體具有一進風側及一出風側，該進風側及該出風側之間界定一風機腔室，該導流框體設置在該本體的出風側毗鄰該槽底的長形出風口，且具有一對接側及一出口側及一導風面，該對接側及該出口側分別在該導流框體的兩側，該導風面位於該導流框體的一內側並從該對接側朝內傾斜的延伸到該出口側且界定一框體通道連通該風機腔室及該長形出風口；一葉輪座，包括一座體及兩懸吊件分別從該座體的一外周朝遠離該座體的方向延伸有一受接端與該風機外殼的該本體連接，以支撐該葉輪座位於該風機腔室及該框體通道內；一離心葉輪，設置在該座體上且位於該風機外殼的該進風側之下，係包含一葉輪上盤及一葉輪下盤，該葉輪下盤具有一輪轂，該葉輪上盤及該葉輪下盤之間具有複數葉片，且該每兩葉片間分別具有一傾斜流道由該輪轂的一外側向該離心葉輪的一外緣朝下傾斜形成且連通該風機腔室，藉由該傾斜流道以令被該離心葉輪吸入的一氣流向下傾斜流入該風機腔室，且通過該框體通道被該導風面引導從該長形出風口進入該容器空間。 A heat dissipation system with a centrifugal axial flow fan, comprising: a system container, with a accommodating groove and a container space, the accommodating groove has a groove bottom isolated from the container space, and a partial area of the groove bottom is provided with a long The air outlet is connected to the container space, and the container space is provided with a heat dissipation unit located behind the accommodating groove; a centrifugal axial flow fan is disposed in the accommodating groove and includes: A fan casing includes a main body and a guide frame, the main body has an air inlet side and an air outlet side, a fan chamber is defined between the air inlet side and the air outlet side, and the guide frame is provided with The air outlet side of the main body is adjacent to the elongated air outlet at the bottom of the groove, and has a butt side, an outlet side and an air guide surface, the butt side and the outlet side are respectively on both sides of the guide frame body, The air guide surface is located on an inner side of the guide frame and extends inwardly from the abutting side to the outlet side and defines a frame passage communicating with the fan chamber and the elongated air outlet; an impeller seat, including The base body and the two suspension members respectively extend from an outer circumference of the base body to a direction away from the base body with a receiving end connected to the body of the fan casing to support the impeller seat located in the fan chamber and the frame body In the channel; a centrifugal impeller, disposed on the seat and under the air inlet side of the fan casing, includes an impeller upper plate and an impeller lower plate, the impeller lower plate has a hub, and the impeller upper plate And there are a plurality of blades between the lower disk of the impeller, and there is an inclined flow channel between each two blades respectively formed from an outer side of the hub to an outer edge of the centrifugal impeller downwardly inclined and communicated with the fan chamber, by The inclined flow channel allows an air flow sucked by the centrifugal impeller to flow downwardly into the fan chamber, and is guided by the air guide surface through the frame channel to enter the container space from the elongated air outlet.

如請求項7所述之具有離心式軸流風機之散熱系統，其中該框體通道從該對接側朝該出口側漸縮貫通，該對接側係對接該本體的出風側，該導風面係為一傾斜面或一凹弧面。 The cooling system with a centrifugal axial flow fan as claimed in claim 7, wherein the frame body channel is tapered and penetrated from the butting side toward the outlet side, the abutting side is connected to the air outlet side of the main body, and the air guiding surface It is an inclined surface or a concave arc surface.

如請求項7所述之具有離心式軸流風機之散熱系統，其中該本體具有一頂壁位於該進風側，該頂壁設有一進風口及兩連接部，該進風口係連通該風機腔室，該兩連接部係連接該葉輪座的受接端。 The cooling system with a centrifugal axial flow fan as claimed in claim 7, wherein the main body has a top wall on the air inlet side, the top wall is provided with an air inlet and two connecting parts, and the air inlet communicates with the fan cavity The two connecting parts are connected to the receiving end of the impeller seat.

如請求項9所述之具有離心式軸流風機之散熱系統，其中該葉輪上盤位於該等葉片上方且由該離心葉輪的一中心向該離心葉輪的一外緣朝下傾斜設置，並具有一流體吸入口係對應該風機外殼的進風口；該葉輪下盤具有一斜面供該等葉片設置，且該斜面由該由該輪轂的該外側向該離心葉輪的一外緣朝下傾斜設置配合該離心葉輪上盤以構成該等傾斜流道。 The cooling system with a centrifugal axial flow fan as claimed in claim 9, wherein the upper plate of the impeller is located above the blades and is inclined downward from a center of the centrifugal impeller to an outer edge of the centrifugal impeller, and has A fluid suction port corresponds to the air inlet of the fan casing; the lower plate of the impeller has an inclined surface for the blades to be arranged, and the inclined surface is inclined downward from the outer side of the hub to an outer edge of the centrifugal impeller. The centrifugal impeller is placed on the plate to form the inclined flow channels.

如請求項10所述之具有離心式軸流風機之散熱系統，其中該頂壁於該進風口邊緣設有朝該風機腔室彎折的一彎折部，該彎折部於該風機腔室內形成一環型凹槽，且該離心葉輪上盤於該流體吸入口的一邊緣朝該頂壁凸伸有一凸環配合該頂壁的該環型凹槽。 The cooling system with a centrifugal axial flow fan as claimed in claim 10, wherein the top wall is provided with a bent portion on the edge of the air inlet that is bent toward the fan chamber, and the bent portion is located in the fan chamber An annular groove is formed, and an edge of the upper plate of the centrifugal impeller on the fluid suction port protrudes toward the top wall with a convex ring to match the annular groove of the top wall.

如請求項9所述之具有離心式軸流風機之散熱系統，其中該風機外殼設有一外罩遮蓋該進風側，該外罩設有一透氣網部對應該進風側，該透氣網部由複數透孔構成，且導流框體與該槽底之間設有一框形墊片。 The cooling system with a centrifugal axial flow fan as claimed in claim 9, wherein the fan casing is provided with a cover to cover the air inlet side, the cover is provided with a ventilating mesh portion corresponding to the air intake side, and the ventilating mesh portion is composed of a plurality of transparent A hole is formed, and a frame-shaped gasket is arranged between the guide frame body and the groove bottom.