201005492 九、發明說明： 【發明所屬之技術領域】 本發明係有關一種電源供應器，尤指一種具有散熱風扇之電源供 應器。 【先前技術】 隨著電腦系統内部電子組件的數目以及效能逐漸提升，作為電腦 系統電力提供來源的電源供應器(p〇Wer SUpply肋红)所需要的負載功率 也不斷升高。電源供應器是電腦系統中主要熱源產生者之一，為能維 持電源供應器的正常運作，使其不會因為在進行高功率電力轉換過程 中所產生出來的熱能而導致損壞或減少其壽命，一般會配置至少一散 熱風扇以進行避免熱能積滯於電源供應器内部。散熱風扇的運作模 式，除了提供持續性轉動的傳統模式外，近年來更發展出可以隨著電 子組件溫度的變化或供電負載狀況而改變散熱風扇轉速的技術，如中 ，民國第 M290269 號、第 M292727 號、第 M255636 號、第 1232080 號、第 1291609 號、第 200415978 號、第 200506589 號以及第 200537277 號專利案’以及美國第us 6,725，132號、第us 6,735,499號、第us M73,883 號、第 US 6,954,684 號、第 US 7,075,261 號、第 US 7,092,623 號、第US 7,098,617號以及第US 7,211，977號專利案，使散熱風扇可 以因應不同狀況而提供較佳的散熱效果。 雖然散熱風扇是目前電源供應器相當重要的散熱方式，當散熱風 扇工作運轉時會產生低頻且持續的嗓音。此外，只要電源供應器運作 時，散熱風扇勢仍持續轉動散熱而消耗固定功率，由其是低度負載的 時候’散熱風扇所;_肖耗_定功率賴降低整體魏供應雜出的功 率效能。在目前日漸講求節能與環保的趨勢下，前述散熱風扇顯然並 非為一個提供電源供應器散熱的理想方法❶習知如中華民國第 M252064號、第M257087號、第M276271號以及第M328610號專利 案揭露多種無散熱風扇之電源供應器。該該些無散熱風扇的電源供 應器’為知散失電源供應器運作時所產生的熱能，一般係裝設有大量 的散熱韓片、熱導管、散熱塊等被動式散熱構件。雖然無散熱風扇的 5 201005492 電源供應器完全去除了散熱風扇產生噪音的可能性而達到靜音的效 果’並且電源供應器不會在輸出電力之前，就把相當量的電力耗費掉， 而降低輸出功率效能，但是前述被動式散熱構件的散熱效率明顯低於 散熱風扇的散賊率，如此—來無法滿足高貞魏祕應輯需的散 熱效果，也因此侷限了應用範圍。 【發明内容】 本發明之主要目的’在概具絲熱風扇的電祕應胃於運作時 除了擁有原本優異的散熱效率之外，也可以達到靜音以及提高電源供 應器的輸出功率效能。為達上述目的，本發賴供—種具備間歇散熱 功，之電源供應n ’至少具有—電力轉鮮元輝得—電力源所提供 之父流電力並轉換為直流電力輸出，該直流電力輸出至-風扇驅動電 路以驅動-散熱風扇運轉。於該電力轉換單元與該散熱風扇之間的直 流電力線路上電性連接-時序糊單元，鱗賴鮮元輸出一啟閉 週期訊號至該錢電力祕，令該直流電力線路具有_驅動該散熱風 扇之驅動狀態以及-巾止驅賴散賊扇之_狀態，使該散熱風扇 具備一於驅動狀態下增加轉速之加速階段，以及一於關閉狀態下降低 轉速之減速階段。 其中，該啟閉週期訊號輸出至該風扇驅動電路、該電力轉換單元 與該風扇驅動電路之間、或該風扇鶴電路與該散減狀間的直流 電力線路上。《力轉鮮元係觸獅供絲之主電力祕或者為 吊備電力系統。而S亥時序控制單元内包含有一脈波產生電路以及一週 期控制電路，S亥脈波產生電路週期性產生一控制脈波至該週期控制電 路，使該週期控制電路輸出該啟閉週期訊號給該風扇驅動電路，以控 制β亥散熱風扇之轉動狀態。此外，該時序控制電路除了可内建預設的 啟閉週期訊號外，亦可藉由連接一設定單元以決定該啟閉週期訊號之 啟閉時距，使該散熱風扇可以因應不同的狀況而調整期間歇轉動的頻 率。 本發明具備間歇散熱功能之電源供應器，該散熱風扇係以間歇性 的方式轉動散熱，有效降低噪音的產生，且大幅降低散熱風扇之使用 6 201005492 功率’以提升整體電源供絲之輸出功率效能，減少不必要的電力浪 費ί此之外’散熱風扇具有優異的散熱效率，可以滿足高功率電源 供應盗的散熱需求。gj此，本發侧時具備具有雜風扇的電源供應 器以及無散減扇的電祕絲之伽，亦同時克服兩者分別具有的 缺失》 【實施方式】 有關本發明之詳細綱及技細容，現航合圖式說明如下： 请參閱『圖1』所示’係本發明—較佳實補之電路方塊示意圖， 如圖所不.本發縣為—種具綱歇散熱功能之獅供應器，至少具 有-電力轉鮮π u以轉―電力源2q所提供之交流電力並轉換為 直"κ·電力輸出，該直流電力輸出至—風扇驅動電路12以驅動_散熱風 扇13運轉。於該電力轉換單元u與該散熱風扇13之間的直流電力線 路^電性連接-時序控制單元14，該時序控制單元14輸出 一啟閉週期 訊號至該直流電力線路，令該直流電力線路具有—驅動該散熱風扇13 之驅動狀態以及-巾止驅細散熱風扇13之關狀態，使該散熱風扇 13具備-魏練駐增加财之加賴段，以及_於關狀態下降 低轉速之減速階段。 其中，該時序控制單元14所產生之啟閉週期訊號可輸出該直流電 =線路上不㈤位置’如輸丨至該風扇驅動電路12、触至該電力轉換 單7Ό 11與該風扇驅動電路12之間、或輸出至該風扇驅動電路12與該 散熱風扇13之間的直流電力線路。 請參閱『圖2』所示’棘發明另—實施例之電路方塊示意圖，如 圖所示.以配置於電腦系統内之電源供應器為例，該電力轉換單元11 包3有主電力系統以及一常備電力系統，該主電力系統與該常備電 力系統電性連結於-電力源2G(如市f)，該主電力系統係於該電腦系 統開機狀態下輸出舰電力供赫電鹏助部各電子崎（例如主 機板、硬碟機、辆機".等）進行運作，而該f備電力系統則為持續 性輸出低壓直流電力(+5V)。於本實施例中，該時序控制單元14包含 有一脈波產生電路141以及一週期控制電路142。於本實施例中，該脈 201005492 波產生電路141週期性產生一控制脈波至該週期控制電路142，使該週 期控制電路142輸出該啟閉週期訊號給該風扇驅動電路12，使該直流 電力電路上之風扇驅動電路12根據該啟閉週期訊號交替進入該驅動狀 態或者該酬狀態，以雛該散減扇13處於加速階段或減速階段。 該脈波產生電路141可喊好預設發㈣該控制脈波，或者該脈波產 生電路141連接至一設定單元15用以控制產生相對應之控制脈波，以 決疋s亥該週期控制電路142輸出該啟閉週期訊號之啟閉時距。使用者 了藉由多種型態之设定單元15決定操作的啟閉時距，如設置於電源供 應器表面或電職殼上馳制開關，献為義緖之輸人介面(如鍵 盤或滑鼠)’或者為-可對辦雜制祕M進行綱驗之無線遙控 设備等，藉此改變該風扇驅動電路12驅動狀態與關閉狀態的交替頻 率，使该風扇驅動電路12得以根據使用者不同的需求來驅動散熱風扇 13轉動。 『圖3』及『圖4』’分別為本發明一較佳實施例中直流電力線路 輸，直流電力之作週期示意圖以及散熱風扇工作轉速示意圖，並搭 配『圖1』所示：該錢電力翁巾直流電力V的讀週期係由一驅 動週期P1以及-關週期P2所域，娜動職ρι無關閉週期 P2交替進行’使該錢電力線路具有—驅驗態以及—關狀態。於 該驅動_ P1内，該風扇驅動電路12接收來自該電力轉換單元n所 提供之直錢力v ’鱗，额扇鶴電路12處於驅驗態^驅動狀 態下之風扇驅動電路12將所接收之直流電力ν驅動後端之散熱風扇 13’使該散熱風扇η進入加速階段R1，此時該散熱風扇η為轉速幻。 當该風扇驅動電路12完成該驅動週期ρι時，則進人關職p2。關 閉狀態下之風扇驅動電路12不輸出直流電力V而巾止驅動後端之散熱 風扇13。因為該散熱風扇13未能受到直流電力v所驅動，此時該散 熱風扇13則進入減速階段把。由於該散熱風扇13沒有受到直流電力 V驅動，此時，該散熱風扇13呈轉速S2，減速階段幻轉速S2之下 降率較加速接段IU轉速S1之上昇率為高，也就是說，減速階段幻 之時間較加速階段R1之時間驗。除狀外，於賴速階段幻末之 8 201005492 2速S2可為-低轉速之待速轉速，甚至可為零轉速s3。於本實施例 $ ^散熱風扇13於風扇驅動電路12之關閉狀態下將其轉速S2降低 速83使°亥散熱風扇13達到停止運轉之令止階段R3。當賴 羽，動電路！2凡成该關閉週期p2後，則再進入下一次的驅動週期& 使得該散熱風扇13達到間歇轉動的目的。 ^上所述’本發明具制歇散熱功能之電源供應H t藉由-Θ夺序 路來雛顯_電路枝輸人錢電力給魏熱風扇， 、传I散熱縣得崎—加速階段與—減速陳之間交替進行工作， =到^轉_目的。相較於傳統健持續轉動的散熱風扇，本發 二減低噪音的產生，並且減少原本散熱風扇所需耗費的電力，以 輪勒祕應騎輸出辨效能。方面，本發明可以達成無 的電源供應騎優點’又能較無散熱風扇的電源供應器具有 發明^熱效率’得以滿足高神€源供應#的賴要求。藉此，本 備具有散熱風刺賴供應器以及無散熱風扇的電源供應 優點」亦同時克服兩者分別具有的缺失。因此本發明極具進步性 ttLtr轉利之要件，麦依法提出申請，析釣局早曰賜准專 將本發魏-詳細綱，惟以上所述者，僅爲本發明之一 貫fe例而已’當不能限定本發明實施之範圍。即凡依本發明申請 所作之均等變化與修飾等，誠仍屬本發明之專利涵蓋範圍内。 201005492 【圖式簡單說明】 圖1，係本發明具備間歇散熱功能之電源供應器一較佳實施例之電路方 塊示意圖201005492 IX. Description of the Invention: [Technical Field] The present invention relates to a power supply, and more particularly to a power supply having a cooling fan. [Prior Art] As the number and efficiency of electronic components in computer systems have gradually increased, the load power required for the power supply (p〇Wer SUpply ribbed red), which is the source of power supply for computer systems, has also increased. The power supply is one of the main heat source generators in the computer system. In order to maintain the normal operation of the power supply, it will not cause damage or reduce the life of the power generated by the high-power power conversion process. At least one cooling fan is generally disposed to prevent thermal energy from accumulating inside the power supply. In addition to the traditional mode of providing continuous rotation, the operation mode of the cooling fan has developed a technology that can change the speed of the cooling fan with the change of the temperature of the electronic component or the load of the power supply in recent years, such as the Republic of China No. M290269, No. M292727, No. M255636, No. 1232080, No. 1291609, No. 200415978, No. 200506589, and No. 200537277, and U.S. No. 6,725,132, No. 6,735,499, No. us M73,883, Nos. 6,954,684, US 7,075,261, US 7,092,623, US Pat. No. 7,098,617, and US Pat. No. 7,211,977 make the heat dissipating fan provide a better heat dissipating effect depending on the situation. Although the cooling fan is a very important cooling method for the current power supply, low-frequency and continuous noise is generated when the cooling fan is operating. In addition, as long as the power supply is in operation, the cooling fan potential continues to rotate and dissipate heat and consumes a fixed power. When it is a low-load load, the cooling fan is cooled; the power consumption is reduced by the power consumption of the overall Wei supply. . Under the current trend of energy saving and environmental protection, the above-mentioned cooling fan is obviously not an ideal method for providing heat dissipation for the power supply. For example, the disclosures of the Republic of China No. M252064, No. M257087, No. M276271 and No. M328610 are disclosed. A variety of power supplies without cooling fans. The power supply devices that do not have a cooling fan are generally configured to have a large number of passive heat dissipating members such as heat sinks, heat pipes, and heat sinks. Although the 5 201005492 power supply without a cooling fan completely removes the possibility of noise generated by the cooling fan and achieves the effect of mute' and the power supply does not consume a considerable amount of power before outputting power, and reduces the output power. Efficacy, but the heat dissipation efficiency of the passive heat dissipating component is obviously lower than that of the heat dissipating fan, so that it can not meet the heat dissipation effect required by the high-end Wei secrets, and thus limits the application range. SUMMARY OF THE INVENTION The main object of the present invention is to achieve quietness and improve the output power efficiency of a power supply device, in addition to having an excellent heat dissipation efficiency, in addition to having an excellent heat dissipation efficiency. In order to achieve the above purpose, the present invention provides an intermittent power supply, and the power supply n' has at least the power of the power supplied by the power source and converted into a DC power output, and the DC power is output to - The fan drive circuit operates with a drive-cooling fan. The DC power line between the power conversion unit and the cooling fan is electrically connected to the timing paste unit, and the output unit outputs an opening and closing period signal to the money power secret, so that the DC power line has a drive for driving the cooling fan. The state and the state of the towel drive enable the cooling fan to have an acceleration phase that increases the rotational speed in the driving state, and a deceleration phase that reduces the rotational speed in the closed state. The opening and closing period signal is outputted to the fan driving circuit, between the power conversion unit and the fan driving circuit, or between the fan crane circuit and the floating DC power line. "The power of the new element is the main power secret of the lion supply silk or the power system for the hoisting. The S-Hail timing control unit includes a pulse wave generating circuit and a cycle control circuit, and the S-Hui pulse wave generating circuit periodically generates a control pulse wave to the cycle control circuit, so that the cycle control circuit outputs the opening and closing cycle signal to The fan drive circuit controls the rotation state of the beta cooling fan. In addition, the timing control circuit can be connected to a setting unit to determine the opening and closing time interval of the opening and closing period signal, in addition to the built-in preset opening and closing period signal, so that the cooling fan can respond to different conditions. The frequency of intermittent rotation during the adjustment period. The invention provides a power supply device with intermittent heat dissipation function, the heat dissipation fan rotates heat in an intermittent manner, effectively reduces noise generation, and greatly reduces the use of the heat dissipation fan. 6 201005492 Power 'to improve the output power efficiency of the overall power supply wire To reduce unnecessary power waste. In addition to this, the 'cooling fan has excellent heat dissipation efficiency, which can meet the heat dissipation requirements of high-power power supply. Gj, this power supply side has a power supply with a fan and a singularity of the electric wire without a fan, and at the same time overcomes the lack of the two respectively. [Embodiment] Detailed details and details of the present invention Rong, the description of the current flight chart is as follows: Please refer to the schematic diagram of the circuit diagram of the invention--the better compensation in the figure shown in Fig. 1 , as shown in the figure. The county is a kind of lion with the heat dissipation function. The supplier has at least - power conversion π u to convert the AC power provided by the power source 2q and converts it into a direct "κ power output, which is output to the fan drive circuit 12 to drive the heat dissipation fan 13 to operate . The DC power line between the power conversion unit u and the heat dissipation fan 13 is electrically connected to the timing control unit 14, and the timing control unit 14 outputs a switching period signal to the DC power line, so that the DC power line has - driving the driving state of the cooling fan 13 and the off state of the towel stopping heat dissipation fan 13, so that the cooling fan 13 has the addition section of the Wei-Lian station, and the deceleration stage of reducing the rotation speed in the OFF state . The start-stop period signal generated by the timing control unit 14 can output the DC power = no (five) position on the line, such as input to the fan drive circuit 12, touch the power conversion unit 7 Ό 11 and the fan drive circuit 12 The DC power line is output between the fan drive circuit 12 and the heat dissipation fan 13 . Please refer to the schematic diagram of the circuit block diagram of the embodiment of the invention shown in FIG. 2, as shown in the figure. Taking the power supply disposed in the computer system as an example, the power conversion unit 11 includes a main power system and a standing power system, the main power system and the standing power system are electrically connected to the power source 2G (such as the city f), and the main power system is connected to the computer system to output the ship power for the Hedian Pengbu Department Electronic Saki (such as motherboard, hard drive, car, etc.) operates, and the backup power system continuously outputs low-voltage DC power (+5V). In the embodiment, the timing control unit 14 includes a pulse wave generating circuit 141 and a period control circuit 142. In this embodiment, the pulse 201005492 wave generating circuit 141 periodically generates a control pulse wave to the cycle control circuit 142, so that the cycle control circuit 142 outputs the opening and closing cycle signal to the fan driving circuit 12 to make the DC power. The fan driving circuit 12 on the circuit alternately enters the driving state or the remuneration state according to the opening and closing period signal, so that the fan 13 is in an acceleration phase or a deceleration phase. The pulse wave generating circuit 141 can call the preset pulse (4) the control pulse wave, or the pulse wave generating circuit 141 is connected to a setting unit 15 for controlling the corresponding control pulse wave to determine the cycle control. The circuit 142 outputs the opening and closing time interval of the opening and closing period signal. The user determines the opening and closing time interval of the operation by a plurality of types of setting units 15, such as setting the switch on the surface of the power supply or the electric appliance, and providing the input interface of the righteousness (such as a keyboard or a mouse). 'or a wireless remote control device or the like that can perform the verification of the miscellaneous secret M, thereby changing the alternate frequency of the driving state and the closed state of the fan driving circuit 12, so that the fan driving circuit 12 can be different according to the user. The need to drive the cooling fan 13 to rotate. FIG. 3 and FIG. 4 are respectively a schematic diagram of a DC power line transmission, a DC power cycle, and a cooling fan operating speed according to a preferred embodiment of the present invention, and are shown in FIG. 1 : The reading period of the Weng towel DC power V is in the domain of a driving cycle P1 and a closing cycle P2, and the kinetic ρι has no closing cycle P2 alternately 'making the money power line have a driving state and a - closing state. In the drive_P1, the fan drive circuit 12 receives the straight money v' scale provided by the power conversion unit n, and the fan drive circuit 12 in the drive state is driven to receive The DC power ν drives the heat-dissipating fan 13' at the rear end to cause the heat-dissipating fan η to enter the acceleration phase R1, at which time the heat-dissipating fan η is a speed illusion. When the fan drive circuit 12 completes the drive period ρι, it enters the gate p2. The fan drive circuit 12 in the closed state does not output the direct current power V but wipes the heat radiating fan 13 at the rear end. Since the heat radiating fan 13 is not driven by the direct current power v, the heat radiating fan 13 enters the deceleration phase. Since the cooling fan 13 is not driven by the DC power V, at this time, the cooling fan 13 has a rotation speed S2, and the rate of decrease of the speed S2 in the deceleration phase is higher than that of the acceleration segment IU rotation speed S1, that is, the deceleration phase. The time of the illusion is faster than the time of the accelerated phase R1. In addition to the shape, in the speed of the stage of the 8th 201005492 2 speed S2 can be - low speed of the speed of rotation, or even zero speed s3. In the present embodiment, the heat radiating fan 13 lowers the rotational speed S2 by the speed 83 in the closed state of the fan drive circuit 12, so that the cooling fan 13 reaches the stop phase R3 of the stop operation. When Lai Yu, move the circuit! 2 After the closing period p2, the next driving cycle & is made to achieve the purpose of intermittent rotation of the cooling fan 13. ^The above description of the power supply H t with the heat dissipation function of the present invention is used to capture the power of the circuit to the Weige fan, and the heat dissipation period of the heat sink to the Weiqi fan. - Deceleration between Chen alternately works, = to ^ turn _ purpose. Compared with the traditional cooling fan that is continuously rotating, the present invention reduces the noise generation and reduces the power required for the original cooling fan, so as to capture the output performance. On the other hand, the present invention can achieve the advantages of no power supply riding, and the power supply with no heat-dissipating fan has the invention's thermal efficiency to meet the requirements of Gaoshen. In this way, the advantages of the power supply with the heat sinking spurs and the non-heating fan are also overcome. Therefore, the present invention is a highly progressive ttLtr transfer requirement, and the application of the law in accordance with the law, the analysis of the fishing bureau has given priority to the special Wei-details, but the above is only the consistent example of the invention. The scope of the practice of the invention is not limited. That is, the equivalent changes and modifications made by the application of the present invention are still within the scope of the patent of the present invention. 201005492 [Simplified Schematic] FIG. 1 is a schematic diagram of a circuit block of a preferred embodiment of a power supply with intermittent heat dissipation function of the present invention.
圖2，係本發明具備間歇散熱功能之電源供應器另—實施例之電路 示意圖 A 圖3 ’本發明具備間歇散熱功能之電源供應器一較佳實施例中直流電力 線路輸出直流電力之工作週期示意圖 圖4’本發明赌·賴舰之電雜應她獅射散熱風扇 之工作轉速示意圖 【主要元件符號說明】 11...... 12...... .......電力轉換單元 13...... ••風扇驅動電路 ........ ..散熱風扇 141...... ...時序控制單元 142...... ...版波產生電路 15...... ...週期控制電路 20...... ......設定單元 P1...... •··.電力源 P2....... ...驅動週期 IU...... ...關閉週期 R2...... •.加速階段 R3..... ..減速階段 S1..... •.·中止階段 S2..... S3 ..... ...·轉速 V..... ......零轉逮 ...罝流電力2 is a circuit diagram of a power supply with intermittent heat dissipation function according to another embodiment of the present invention. FIG. 3 is a circuit diagram of a DC power line outputting DC power in a preferred embodiment of the present invention. Schematic diagram of the working speed of the singer and the singer of the singer of the singer of the present invention [the main component symbol description] 11... 12...... ....... Power conversion unit 13 ... • Fan drive circuit ........... Cooling fan 141 ... ... timing control unit 142 ... The version wave generating circuit 15 ... ... the period control circuit 20 ... ... setting unit P1 ... • · ·. power source P2.... ... drive cycle IU ... ... close cycle R2 ... • acceleration phase R3 ..... .. deceleration phase S1..... •.· Stop phase S2..... S3 ..... ...·Speed V..... ...... zero turn catch... turbulent power