TWI782793B - Automatic backflow prevention heat dissipating device - Google Patents
Automatic backflow prevention heat dissipating device Download PDFInfo
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- TWI782793B TWI782793B TW110142568A TW110142568A TWI782793B TW I782793 B TWI782793 B TW I782793B TW 110142568 A TW110142568 A TW 110142568A TW 110142568 A TW110142568 A TW 110142568A TW I782793 B TWI782793 B TW I782793B
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Abstract
Description
本發明是有關於一種散熱裝置,特別是指一種風扇失效時的自動防回流散熱裝置。 The invention relates to a heat dissipation device, in particular to an automatic backflow prevention heat dissipation device when a fan fails.
參閱圖1,一種現有的散熱裝置1,包含一框架11,及六個設置在該框架的風扇12、12’,當其中一個風扇12’毀損時,除了該風扇12’所對應的出風口未有氣流流出外,該風扇12’兩側的出風口亦會因為風壓差,而有自毀損風扇12’所對應之出風口回流的現象。亦即,假設一個風扇12(12’)自對應之出風口排出的排風量為A,當所有風扇12、12’皆正常的狀況下,總排風量為6A,但當其中一個風扇12’毀損時,因有氣流回流的現象,因此總排風量約下降成4A,減少了三分之一。
Referring to Fig. 1, an existing heat dissipation device 1 includes a
參閱圖2,為改善前述狀況,另一種現有的散熱裝置1’,於框架11’上加裝了百葉窗13,當有風扇毀損時,將對應該風扇位置的百葉窗13關閉即可減少回流之現象。惟,由於百葉窗13在開啟
時仍有厚度,會增加風阻,而造成散熱效果不佳的現象。
Referring to Fig. 2, in order to improve the aforementioned situation, another existing cooling device 1' is equipped with
值得一提的是,為改善回流現象,另一種解決方案是將風扇12(12’)的馬達替換為雙轉子馬達,藉此,在任一組轉子毀損時,可透過另外一組轉子使風扇12(12’)轉動而排風。惟,雙轉子馬達的價格高昂,不易普及。
It is worth mentioning that, in order to improve the backflow phenomenon, another solution is to replace the motor of the fan 12 (12') with a dual-rotor motor, so that when any set of rotors is damaged, the
因此,本發明之一目的,即在提供一種增加散熱效果的自動防回流散熱裝置。 Therefore, one object of the present invention is to provide an automatic anti-backflow cooling device with enhanced heat dissipation effect.
於是,本發明自動防回流散熱裝置在一些實施態樣中,是包含:一基板、一風扇框、一風扇單元、一防回流單元,及一控制單元。 Therefore, in some embodiments of the present invention, the automatic anti-backflow cooling device includes: a base plate, a fan frame, a fan unit, an anti-backflow unit, and a control unit.
該風扇框設置於該基板,並界定出至少一個出風口。 The fan frame is arranged on the base plate and defines at least one air outlet.
該風扇單元設置於該風扇框,並包括至少一個用於自對應之出風口吹出氣流的風扇。 The fan unit is arranged on the fan frame and includes at least one fan for blowing air from the corresponding air outlet.
該防回流單元,對應該至少一出風口設置,並包括至少一數量對應於該至少一出風口的防回流組件。每一防回流單元包括一樞接於該風扇框的轉動組,及一固定於該基板的電磁鐵。該轉動組具有一用以遮蔽對應之出風口的擋板,及一連接於該擋板的磁性件。該電磁鐵用於供該磁性件抵靠,以使該擋板在該電磁鐵未通電 時定位於未遮蔽該出風口的一開啟位置,且在該電磁鐵通電時與該電磁鐵磁性相斥,使該擋板樞轉至遮蔽該出風口的一遮蔽位置。 The anti-backflow unit is arranged corresponding to the at least one air outlet, and includes at least one anti-backflow component corresponding to the at least one air outlet. Each anti-backflow unit includes a rotating group pivotally connected to the fan frame, and an electromagnet fixed to the base plate. The rotating group has a baffle plate for covering the corresponding air outlet, and a magnetic part connected to the baffle plate. The electromagnet is used for the magnetic part to lean against, so that the baffle plate is not energized It is positioned at an open position that does not cover the air outlet, and when the electromagnet is energized, it magnetically repels the electromagnet, so that the baffle pivots to a shielding position that covers the air outlet.
該控制單元與該至少一風扇及該等防回流組件的電磁鐵耦接,並用以接收該至少一風扇的運作信號,且在接收到前述運作信號中指示出對應之風扇有異常發生時,使該對應之風扇所對應的該防回流組件之電磁鐵通電,以使對應之擋板移動至該遮蔽位置,藉以防止氣流自對應之出風口回流。 The control unit is coupled with the at least one fan and the electromagnets of the anti-backflow components, and is used to receive the operation signal of the at least one fan, and when receiving the operation signal indicates that the corresponding fan has an abnormality, make it The electromagnet of the backflow prevention component corresponding to the corresponding fan is energized, so that the corresponding baffle plate moves to the shielding position, so as to prevent the airflow from backflowing from the corresponding air outlet.
在一些實施態樣中,於每一防回流組件的該擋板於該開啟位置時,該擋板的重心位於一第一高度,於該遮蔽位置時,該擋板重心位於一第二高度,該第一高度小於該第二高度。 In some implementations, when the baffle of each anti-backflow component is at the open position, the center of gravity of the baffle is located at a first height, and when the baffle is at the shielding position, the center of gravity of the baffle is located at a second height, The first height is smaller than the second height.
在一些實施態樣中,每一該磁性件為永久磁鐵,於任一防回流組件的該擋板於該開啟位置時,該防回流組件之轉動組的磁性件磁力吸附於該電磁鐵。 In some embodiments, each of the magnetic parts is a permanent magnet, and when the baffle of any anti-backflow component is in the open position, the magnetic parts of the rotating set of the anti-backflow component are magnetically attracted to the electromagnet.
在一些實施態樣中,每一該磁性件為永久磁鐵,於任一防回流組件的該擋板於該遮蔽位置時,該防回流組件之轉動組的磁性件磁力吸附於該風扇框。 In some embodiments, each of the magnetic components is a permanent magnet, and when the baffle of any backflow prevention component is at the shielding position, the magnetic components of the rotating set of the backflow prevention component are magnetically attracted to the fan frame.
在一些實施態樣中,每一該擋板具有一樞接於該風扇框的第一端部,及一相反於該第一端部且供對應之該磁性件連接的第二端部。 In some embodiments, each baffle has a first end pivotally connected to the fan frame, and a second end opposite to the first end and connected to the corresponding magnetic element.
本發明至少具有以下功效:透過設置該防回流單元及 該控制單元,在接收到運作信號中指示出有異常發生時,使對應指示出有異常發生的運作信號的風扇位置的該防回流組件之電磁鐵通電,以使對應之擋板移動至該遮蔽位置,藉以防止氣流自對應之出風口回流。此外,該等擋板在該等風扇運作正常時,會定位在未遮蔽對應之出風口的開啟位置,而不會影響氣流的排出,達到增加散熱效果的功效。 The present invention at least has the following effects: by setting the anti-backflow unit and The control unit, when receiving the operation signal indicating that there is an abnormality, energizes the electromagnet of the anti-backflow component corresponding to the position of the fan corresponding to the operation signal indicating that there is an abnormality, so that the corresponding baffle moves to the shielding Position, in order to prevent the air flow from the corresponding air outlet backflow. In addition, when the fans are operating normally, the baffles will be positioned at the opening positions of the corresponding air outlets without covering them, without affecting the discharge of the airflow, so as to increase the heat dissipation effect.
1:散熱裝置 1: Cooling device
11:框架 11: frame
12:風扇 12: fan
13:百葉窗 13: Shutters
2:基板 2: Substrate
3:風扇框 3: Fan frame
31:圍壁 31: wall
32:入風口 32: Air inlet
33:出風口 33: Air outlet
4:風扇單元 4: Fan unit
41:風扇 41: fan
41A、41B、41C:風扇 41A, 41B, 41C: Fan
5:防回流單元 5: Backflow prevention unit
50:防回流組件 50: Backflow prevention component
51:轉動組 51: Rotation group
511:擋板 511: Baffle
512:磁性件 512: Magnetic parts
513:第一端部 513: first end
514:第二端部 514: second end
52:電磁鐵 52: electromagnet
52A、52B、52C:電磁鐵 52A, 52B, 52C: electromagnet
53:樞轉組 53: Pivot Group
531:轉軸 531: Shaft
532:樞轉片 532: Pivot piece
6:控制單元 6: Control unit
h1:第一高度 h1: first height
h2:第二高度 h2: second height
本發明之其他的特徵及功效,將於參照圖式的實施方式中清楚地呈現,其中:圖1是現有的散熱裝置的剖視示意圖;圖2是另一種現有散熱裝置的立體圖;圖3是一不完整的立體圖,說明本發明自動防回流散熱裝置的一實施例;圖4是該實施例之一側視示意圖,且該實施例的一擋板位於一開啟位置;圖5是類似於圖4的側視示意圖,但該擋板位於一遮蔽位置;及圖6是該實施例的訊號方塊圖。 Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, wherein: Fig. 1 is a schematic cross-sectional view of an existing heat dissipation device; Fig. 2 is a perspective view of another existing heat dissipation device; Fig. 3 is An incomplete perspective view illustrating an embodiment of the automatic anti-backflow cooling device of the present invention; FIG. 4 is a schematic side view of the embodiment, and a baffle of the embodiment is in an open position; FIG. 5 is a view similar to that of FIG. 4, but with the baffle in a shielded position; and FIG. 6 is a signal block diagram of this embodiment.
參閱圖3、圖4與圖5,本發明自動防回流散熱裝置1之一實施例,包含一基板2、一風扇框3、一風扇單元4、一防回流單元5,及一控制單元6(參圖6)。
Referring to Fig. 3, Fig. 4 and Fig. 5, one embodiment of the automatic anti-backflow cooling device 1 of the present invention includes a
該風扇框3設置於該基板2,並具有一圍壁31,且界定出對應該風扇單元4並用於供氣流進入的至少一入風口32,及對應該風扇單元4並用於供氣流排出且數量對應該至少一入風口32的至少一出風口33。
The
該風扇單元4可拆卸地設置於該風扇框3。
The
值得說明的是,在本實施例所例示的一態樣中,該風扇單元4包括三個風扇41,且該風扇框3包括三個入風口32與三個出風口33,且每一風扇41用於將空氣自對應之入風口32引入,並自對應之出風口33吹出氣流。本實施例的另一態樣中,該風扇41、該風扇框3的入風口32、出風口33數量也可以是一、二或四以上,此外,該風扇框3可以包括對應可被安裝的該風扇41的數量之圍壁31,每一圍壁31界定出一個該入風口32與一個該出風口33。
It is worth noting that, in an example of this embodiment, the
參閱圖3、圖4與圖5,該防回流單元5對應其中至少一該出風口33設置。該防回流單元5包括對應至少一該出風口33設置的至少一防回流組件50。每一防回流組件50包括一樞接於該風扇框3的轉動組51、一固定於該基板2的電磁鐵52,及至少一用以供該
轉動組51樞接於該風扇框3的樞轉組53。在本實施例中,前述防回流組件50對應該等出風口33的數量為三,但使用者可以對應出風口33的數量而對應調整防回流組件50的數量,不應以本實施例的三為限。
Referring to FIG. 3 , FIG. 4 and FIG. 5 , the
該轉動組51具有一用以遮蔽對應之出風口33的擋板511,及一連接於該擋板511的磁性件512。
The
在該電磁鐵52未通電時,該電磁鐵52抵靠於該磁性件512以定位於未遮蔽該出風口33的一開啟位置(參圖4)。在該電磁鐵52通電時,該磁性件512與該電磁鐵52磁性相斥,使該擋板511樞轉至遮蔽該出風口33的一遮蔽位置(參圖5),藉以防止氣流自對應之出風口33回流。此外,該等擋板511在該等風扇41運作正常時,會定位在未遮蔽對應之出風口33的開啟位置,而不會影響氣流的排出,達到增加散熱效果的功效。
When the
具體而言,在本實施例中,該磁性件512為永久磁鐵,於任一防回流單元5的該擋板511於該遮蔽位置時,該防回流單元5之轉動組51的磁性件512磁力吸附於該風扇框3。藉此,當任一擋板511在該遮蔽位置時,該擋板511除了因風壓差而抵靠於對應之風扇框3外,還可以透過該磁性件512的磁力吸附於該風扇框3的對應位置的方式穩定於該遮蔽位置,藉以防止該擋板511因意外碰觸或是氣流強弱的影響而掉落或無法完全遮蔽該出風口33而產生氣流
回流的情形。此外,值得說明的是,在本實施例中,於任一防回流單元5的該擋板511於該開啟位置時,該防回流單元5之的磁性件512是以本身的磁力吸附於具有可被該磁性件512吸附的金屬材質的該電磁鐵52,藉以防止該擋板511意外掀起而遮蔽對應的該出風口33而導致排風量減少的情形。
Specifically, in this embodiment, the
值得說明的是,在本實施例中,該防回流組件50具有二個該樞轉組53。其中,每一該樞轉組53是絞鏈,並包括一界定出一旋轉中心的轉軸531,及二分別連接於對應之擋板511與風扇框3且供該轉軸531穿設的樞轉片532,其中該樞轉組53連接該風扇框3靠近該出風口33及該基板2的位置,但不以此實施態樣為限,該樞轉組53只要能允許使該轉動組51相對於該風扇框3轉動,而在該開啟位置或該遮蔽位置間樞轉,即可以達到本實施例的功效。此外,該等樞轉組53的數量不以本實施例為限。
It should be noted that, in this embodiment, the
參閱圖4、圖5與圖6,該控制單元6與該等風扇41及該等防回流組件50的電磁鐵52耦接,並用以接收該等風扇41的運作信號且在接收到該等運作信號中指示出對應之風扇41有異常發生時,使該對應之風扇41所對應的該防回流組件50之電磁鐵52啟動,例如對該電磁鐵52供電使該電磁鐵52啟動或是切換控制該電磁鐵52之開關(圖未示)啟動該電磁鐵52的運作,以使對應之擋板511轉動至該遮蔽位置,藉以防止氣流自對應之出風口33回流。
Referring to Fig. 4, Fig. 5 and Fig. 6, the
為了方便說明,以下說明以在本實施例中,該自動防回流散熱裝置1具有三個該風扇41為例,於圖6中,將前述的該等風扇41分為風扇41A、風扇41B與風扇41C,且分別依序對應該風扇41A、41B、41C之該等防回流組件50的電磁鐵52分別編號為電磁鐵52A、電磁鐵52B、電磁鐵52C。
For the convenience of description, the following description takes the automatic anti-reflux cooling device 1 as an example with three
例如,當風扇41A的運作信號指示出該風扇41A有異常發生時,例如:因轉子毀損或其他因素故障例如風扇的電路故障或晶片異常等因素而使得該風扇41A轉速為零,或是該控制單元6未收到風扇41A的運作信號,或是實際轉速與控制單元6命令/控制該風扇41A運轉時所要求/指示的預設轉速不符之情形,該控制單元6會使該風扇41A所對應的該電磁鐵52A啟動,使該電磁鐵52A對該對應之該磁性件512產生斥力,因此該電磁鐵52A以該斥力推動對應之該擋板511,使對應之該擋板511樞轉至該遮蔽位置,藉此遮蔽對應之出風口33,達到防止氣流由該出風口33回流的功效。另值得注意的是,在本實施例中,在毀損或故障的風扇41A在被修復或替換為運作正常的風扇41之前,該磁性件512會以自身之磁力吸附於該風扇框3對應位置,及/或該控制單元6會持續使電磁鐵52A通電,以防止對應之擋板511受氣流影響而轉動導致未完全遮蔽對應之出風口33,而造成至少部分氣流回流的現象。
For example, when the operation signal of the
值得注意的是,本發明是在任一風扇41運作異常時,
也就是說,當該控制單元6接收到任一風扇41對應的運作信號指示出該風扇41出現運作異常的現象時,才使對應該任一風扇41之電磁鐵52啟動,在該等風扇41皆正常運作時,也就是說,當該控制單元6接收到的該等風扇41對應的運作信號指示出該風扇41均運作正常時,該控制單元6使控制供電給該等電磁鐵52的開關處於不供電給該等電磁鐵52的狀態,或是該控制單元控制該電磁鐵52不啟動,藉此,使該電磁鐵52不產生斥力,達到節省電力的功效。
It should be noted that, in the present invention, when any
具體而言,在本實施例中,每一該擋板511具有一樞接於該風扇框3的第一端部513,及一相反於該第一端部513的第二端部514。藉此,由於該磁性件512與旋轉中心的距離(磁力的力臂)大於擋板511重心與旋轉中心的距離(重力的力臂),因此,根據槓桿原理,該控制單元6只要向該電磁鐵52通以較小的電力而產生較小的磁斥力,即可以使該擋板511旋轉而使該擋板511樞轉至接觸該風扇框3,以使該磁性件512的磁力吸附於該風扇框3的對應位置,達到節省電力的功效。
Specifically, in this embodiment, each of the
此外,在本實施例中,於每一防回流單元5的該擋板511於該開啟位置時,該擋板511的重心位於一第一高度h1,於該遮蔽位置時,該擋板511重心位於一第二高度h2,該第一高度h1小於該第二高度h2。藉此,當維修人員修復或替換掉對應指示出有異常發生的運作信號所對應的運作異常之風扇41,且修復或替換後之該風
扇41輸出的運作信號指示被修復或替換後之該風扇41運作正常時,原先位於該遮蔽位置的該擋板511會受因被修復或置換的該風扇41正常運轉而產生氣流經該出風口33吹送而產生的推力,且該推力會抵抗該磁性件512吸附該風扇框3的磁力,而使該擋板511不吸附該風扇框3,藉此,使該擋板511與該基板2之間的夾角小於90度,加上擋板511自身重力所產生的力矩而使該擋板511可以朝該開啟位置轉動,不須額外的機構即可以復位至該開啟位置,達到簡化結構設計並節省建置成本的功效。
In addition, in this embodiment, when the
綜上所述,本發明自動防回流散熱裝置,透過設置該防回流單元5及該控制單元6,在接收到該等運作信號中有任一運作信號指示出對應之風扇41有異常發生時,使該對應之風扇41所對應的該防回流組件50之電磁鐵52啟動,以使對應之擋板511移動至該遮蔽位置,藉以防止氣流自對應之出風口33回流。此外,該等擋板511在該等風扇41運作正常時,會定位在未遮蔽對應之出風口33的開啟位置,而不會影響對應之風扇41所引入的氣流的經由對應之出風口33排出,故確實能達成本發明之目的。
To sum up, the automatic anti-backflow cooling device of the present invention, by setting the
惟以上所述者,僅為本發明之實施例而已,當不能以此限定本發明實施之範圍,凡是依本發明申請專利範圍及專利說明書內容所作之簡單的等效變化與修飾,皆仍屬本發明專利涵蓋之範圍內。 But what is described above is only an embodiment of the present invention, and should not limit the scope of the present invention. All simple equivalent changes and modifications made according to the patent scope of the present invention and the content of the patent specification are still within the scope of the present invention. Within the scope covered by the patent of the present invention.
2:基板 2: Substrate
3:風扇框 3: Fan frame
31:圍壁 31: wall
32:入風口 32: Air inlet
33:出風口 33: Air outlet
5:防回流單元 5: Backflow prevention unit
50:防回流組件 50: Backflow prevention component
51:轉動組 51: Rotation group
511:擋板 511: Baffle
512:磁性件 512: Magnetic parts
52:電磁鐵 52: electromagnet
53:樞轉組 53: Pivot Group
Claims (5)
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