1300108 九、發明說明： 【發明所屬之技術領域】 特別關於一種離心式風 本务明係關於一種風扇 扇。 【先前技術】 隨著電子產品朝向高性能、高頻 化的迅速發展，造成雷；含 、罕工得 而容易產生不穩定越來越高’因 成為目前電子產品的重要課題;:可#度’所以散熱已 :用^作為散熱裝置乃為常見的結構設置，一種 :知離心式風扇！之上視圖如圖&及圖U所示，並肩 # 11依據排列方式可分為前傾式扇葉（如圖la所^) 二扇V如圖1b所示)，該等扇葉U轉動方 2則#U所不。在轉速相同的條件下，前傾式扇葉可輸 出車父大的風壓，提供較佳的散熱效果， —j 、^羽葉但其所消耗的功率亦較低，因此 σ依據實際需要（例如消耗功率範圍）而選用不同類型 的扇葉。 凊麥照圖2所示’ -種習知離心式風扇2包括一葉 輪21以及一馬達22。該葉輪21係包括-底板213、1 輪穀211及複數後傾式扇葉212，該等扇葉212係以$ 輪穀211 #中心，環設於與該輪轂211連接之該底板⑴ 上。該葉輪21 $包括-連接環2Μ’其係連結於該等 1300108 ^ 之相對於該底板213的另一側；該馬達22係 夺置="亥輪轂211内，以連結並驅動該葉輪21轉動。 —> Γ "亥葉輪21轉動時，氣流由該葉輪21中心進入， 藉名等扇葉212之作用而沿著該等扇葉212作輻射狀流 二二後傾式扇葉輸出的風壓相對前傾式扇葉為小， 匕σ亥葉輪2 1應用於風扇2之散熱效果亦較差。1300108 IX. Description of the invention: [Technical field to which the invention pertains] In particular, a centrifugal type of wind is related to a fan fan. [Prior Art] With the rapid development of electronic products towards high performance and high frequency, it is caused by lightning; it is easy to produce instability and is getting higher and higher because it is a major problem in current electronic products; 'So the heat has been: use ^ as a heat sink is a common structural setup, one: know the centrifugal fan! The top view is shown in Figure & and Figure U. The shoulder #11 can be divided into forward-inclined blades according to the arrangement (as shown in Figure la). Two fans V are shown in Figure 1b. Party 2 is #U not. Under the same speed, the forward-inclined fan blade can output the wind pressure of the car's father, providing better heat dissipation effect, and the power of the j- and ^ feather leaves is also low, so σ is based on actual needs ( For example, power consumption range) and different types of blades are used. The buckwheat is shown in Fig. 2 - a conventional centrifugal fan 2 includes a impeller 21 and a motor 22. The impeller 21 includes a bottom plate 213, a trough 211, and a plurality of backward tilting blades 212. The blades 212 are centered on the trough 211# and are disposed on the bottom plate (1) connected to the hub 211. The impeller 21 $ includes a connecting ring 2 ′′ that is coupled to the other side of the 1300108 ^ relative to the bottom plate 213 ; the motor 22 is captured in the "Holding hub 211 to connect and drive the impeller 21 Turn. -> Γ " When the impeller 21 rotates, the airflow enters from the center of the impeller 21, and the fan blade 212 acts as a radial flow along the fan blades 212 to output the wind of the second and second backward tilting blades. The pressure is relatively small compared to the forward-inclined blade, and the heat dissipation effect of the 匕σ海 impeller 2 1 applied to the fan 2 is also poor.
At 女何、進後傾式扇葉之風扇及其葉輪的效 ΤΙ:、在相對較低的功率消耗下而提高散熱的效果， 疋畜刚重要課題之一。 【發明内容】 效提上述課題，本發明之目的為提供-種能夠有 缺升心，在較㈣功率祕下 心式風扇及其葉輪。 果的離 板、：二為達上述目的，本發明之-種葉輪包括-底 及複㈣葉。該輪㈣與該絲連結 輪料中心環設於該底板上 周緣之葉尾處具有至=二扇葉之鄰近於該葉輪外 為達上述目的，依本私明夕 -hh. 1 葉輪以及-容置"^ 種心式風扇包括一 底板、-輪暈戶Γ方之馬達。該葉輪係包括- 扇葉以該輪Ί，錢㈣職板連結，該等 並驅動㈣•上；該馬達係連結 亥莱輪轉動。其中’該等扇葉係呈後傾式結構， 1300108 且該等扇葉之鄰近於該葉輪外周緣之葉尾處具有至少 一反曲部。 並戶所述’本發明所提供之離心、式風扇及其葉輪， 葦^係呈後傾式結構，且扇葉之鄰近於葉輪外周緣之 部至少—反曲部’讓氣流流經葉尾時藉由反曲 功率、、肖^ 相提升，在較低的 力丰4耗下，美尚散熱效果。 【實施方式】 之：：將ΐ照相關圖式’說明依據本發明較佳實施例 風扇及其葉輪’其令相同的元件將以相同 的翏妝付號加以說明。 ，3a與圖4係分別顯示本發明較佳實施例之 3:: 一二及f葉輪之一上視圖與立體圖。離心式風扇 已括葉輪3 1以及一馬達32，JL中兮接4人 -底板312、-輪轂311以數：輪31係包括 係容置於該輪穀311内，以連4^313;該馬達32 該輪數311係與該底板川連結，而該㈣㈣3轉= ==心’環設於該底板312上;在本實施例中， =3=呈環形且與該輪穀311及該等扇葉313 一 2型。其中，該等扇葉313係呈後傾式結構 扇葉313之鄰近於該葉輪3 门 卜周緣之葉尾處具有一反 口 ’圖％係為該反曲部3131之放Αη 曲部3131係可且有平潛矣；_ 大圖该反 L有千“面，藉由該反曲部3⑶以提 1300108 的風量與效能。本發明 於该茱尾處設置複數反曲部。 A而要 該葉輪31更包括 葉3!3之相對於該 ^ 14係、連結於該等扇 314與扇荦313n伤 、一端側，且該連接環 η茱·Μ3同樣係可一體成型。 針㈣知與本發 驗數據顯示二;明4::〇RPM時，根據實 七月之風扇性月匕確實較習知為佳。 :宗上所述，本發明所提供之離心式風 式結構:且扇葉之鄰近於葉輪外周緣之 免八有夕反曲部，讓氣流流經葉尾時藉由反曲 稍高風扇的風量，使風扇的效能得以提升，在較低的 功率消耗下，提高散熱效果。 _、 以上所述僅為舉例性，而非為限制性者。任 ^本，明之精神與Μ，而對其進行之等效修改或變 更，均應包含於後附之申請專利範圍中。 【圖式簡單說明】 圖la為一種習知離心式風扇與其前傾式扇葉之一 上視圖； μ 圖lb為一種習知離心式風扇與其後傾式扇葉之一 上視圖； > 圖2為一種習知_心式風扇《一立體剖面示意圖； I3〇〇i〇8 圖3a為依據本發明較佳實施例之一種離心式風屬 及其葉輪之一上視圖； 圖3b為第3a圖之反曲部放大圖； 圖4為依據本發明較佳實施例之一種離心式風屬 之—立體剖面示意圖；以及 一圖5為習知與本發明較佳實施例之離心式風屬 一風扇性能曲線圖。The effect of the female and the fan of the backward-inclined fan blade and its impeller: It improves the heat dissipation effect at a relatively low power consumption, and is one of the important topics of the animal. SUMMARY OF THE INVENTION In order to solve the above problems, an object of the present invention is to provide a heart-type fan and an impeller thereof which are capable of having a lack of ascent and a lower power. The separator of the fruit, the second is the above-mentioned purpose, and the impeller of the present invention comprises a bottom and a complex (four) leaf. The wheel (4) and the wire connecting the center of the wire are disposed at the end of the blade at the periphery of the bottom plate, and the second to the second blade are adjacent to the outside of the impeller for the above purpose, according to the private day-hh. 1 impeller and - The accommodating "^ heart-shaped fan includes a bottom plate, a motor with a sleek side. The impeller includes - a fan blade for the rim, a money (four) job board link, and the like (four) • upper; the motor is coupled to the Hayley wheel for rotation. Wherein the fan blades are of a rearward inclined configuration, 1300108 and the blades have at least one recursion adjacent the tip of the outer periphery of the impeller. The centrifuge, the fan and the impeller thereof provided by the invention have a backward tilting structure, and the fan blade is adjacent to the outer periphery of the impeller, at least the recurve portion allows the airflow to flow through the blade tail. By reversing the power, and improving the phase, the heat dissipation effect is achieved at a lower power consumption of 4. [Embodiment]: A fan and an impeller thereof will be described in accordance with a preferred embodiment of the present invention, and the same components will be described with the same makeup. 3a and 4 are respectively a top view and a perspective view showing one of the preferred embodiments of the present invention. The centrifugal fan includes an impeller 31 and a motor 32. The JL is connected to a 4-person-base plate 312, a hub 311 is numbered: the wheel 31 includes a system disposed in the valley 311 to connect 4^313; The number of wheels 311 of the motor 32 is connected to the bottom plate, and the (four) (four) 3 turns = == heart 'ring is disposed on the bottom plate 312; in the embodiment, =3 = ring shape and the wheel valley 311 and the same Fan blade 313 is a type 2. Wherein, the fan blades 313 are rearwardly inclined, and the blade 313 has a reverse end adjacent to the periphery of the periphery of the impeller 3. The figure % is the reflexed portion 3131. There may be a flat snorkel; _ big picture, the reverse L has a thousand face, and the recurve 3 (3) is used to increase the air volume and efficiency of the 1300108. The present invention sets a complex recursion at the tail. The impeller 31 further includes a blade 3! 3 opposite to the system, is coupled to the fan 314 and the fan 313n, and has one end side, and the connecting ring η茱·Μ3 is integrally formed. The needle (four) knows and The test data shows two; Ming 4:: 〇 RPM, according to the actual fan of the month of July is indeed better than the custom.: According to the above, the centrifugal wind structure provided by the present invention: and the fan blade It is adjacent to the outer periphery of the impeller to eliminate the eight-yellow recurve. When the airflow flows through the blade tail, the fan's performance is improved by re-rotating the air volume of the slightly higher fan, and the heat dissipation effect is improved at a lower power consumption. _, the above is only an example, not a limitation. Anyone, the spirit and the spirit of the Ming, and the Modifications or changes shall be included in the scope of the appended patent application. [Simple description of the drawings] Figure la is a top view of a conventional centrifugal fan and its forward tilting fan; μ Figure lb is a conventional FIG. 2 is a schematic view of a conventional _heart fan; FIG. 3 is a schematic view of a preferred embodiment of the present invention. FIG. FIG. 3b is an enlarged view of a recurve portion of FIG. 3a; FIG. 4 is a perspective view of a centrifugal wind according to a preferred embodiment of the present invention; 5 is a graph showing the performance of a centrifugal wind-fan according to a preferred embodiment of the present invention.
元件符號說明： 1、2 21 離心式風扇 葉輪 11 扇葉 212 扇葉 211 輪毅 214 連接環 213 底板 3 離心式風屬 22 馬達 311 輪轂 31 葉輪 313 扇葉 312 底板 314 連接環 3131 反曲部 32 馬達Description of component symbols: 1, 2 21 Centrifugal fan impeller 11 Fan blade 212 Blade 211 Wheel 214 Connecting ring 213 Base plate 3 Centrifugal wind 22 Motor 311 Hub 31 Impeller 313 Blade 312 Base plate 314 Connecting ring 3131 Recurve 32 motor