九、發明說明： 【發明所屬之技術領域】 处本發明係有關於一種「風扇驅動電路之結構」，尤指一種 此使風扇於自由流射之轉速或最大流量符合預定規格，兼 具7風扇錢有之非自岭場巾的流量㈣度減小之風 扇驅動電路之結構。 【先前技術】 按’-般風扇馬達之驅動電路係連接馬達線圈，藉以提 供風扇馬達作動所需之電力’通f上述風扇馬達運作所產生 之最大流量值於生產前被事先預定（例如：購買者指定），連 帶地前述馬達線圈之直流阻抗值（或稱繞阻）亦隨之固定，然 而’在受有背壓之非自由流場的祕環境巾，由於風扇馬達 運轉所能帶動之風量隨壓力增加而減少（請參考第一、二圖 所示之習知風扇的壓力流量曲線P-Qcurve，前述第一、二圖 分別為轴流式風扇、離心式風扇在當背壓為零時象徵於自由 流％中的最大流量值）’導致該風扇馬達所作之功亦將變小， 因而前述馬達線圈流通之電流降低’而使風扇馬達帶動之流 量過度減少，熱對流因此大幅降低）’因此，有必要針對習知 技術風扇馬達受背壓影響而使流量大幅減小之缺點來加以改 善。 【發明内容】 爰此’為解決上述習知技術之缺點，本發明之主要目的， 在於提供-種風扇驅動電路之結構，藉由降低馬達線圈之繞 阻並配σ比較單元m通馬達軸之電舒以限制，以使 風扇馬達運轉之速度或其所帶動之最大流量值符合指定規 格。 本發明之次-目的’係由減少馬魏圈之繞阻而提升可 流通馬達線圈之電流準位，當風扇馬達運轉於受有背壓之系 統時可縣被抑制之電流準麵麟補償，使得轉速自 動提升並得贿風扇流量抑㈣的增加而過度減小進而 提升風扇之特性。 /為達上述之目的’本發明之—種風扇鶴電路之結構， 係可電氣連接設於-風扇馬達之_馬達、賴單元，主要包括 有：一驅動單元，係電氣連接前述馬達線圈單元，用以驅動 上述風扇馬達運轉；—控制單元，係電氣連接前述驅動單元 或/及馬達線圈單元，藉以操控上述馬達線圈單元之運作狀 態，前述馬達線圈單元的直流阻抗值係製作得較預定規格 低，藉以獲得-參考準位，該參考準位係大於使用者或靖買 者指定風扇在自由流場下之轉速或最大流量㈣應的一預設 準位；-調整單元，係電氣連接上述控解元及馬達線圈單 二俾接收前述馬達線圈單元之該參考準位，藉由所述調整 导謂上述參考準位比對前述預設準位，在該參考準位大於 預°又準位之情形中’所述調整單元依據上述預設準位傳輸- 箝制準位指触辦元，俾由馳鮮元限麟述驅動單 疋之輸出準位等於上述預設準位至前述馬達線圈單元，以達 調整（或娜正、降低）目減傾述馬達賴單元的直流阻抗 值所導致該風扇馬達較高轉速，而使該風扇馬達之轉速初始 值或其所▼動之氣流量符合使用者之預定規格，當風扇驅動 電路之結構置人有背壓之非自由流場㈣統中，即使所述風 扇馬達運轉於受有㈣之系統而導致流通前述馬達線圈之電 流降低，利用原先被抑制之參考準位即可獲得補償，使得轉 速自動提升’得以使風扇流量不㈣壓的增加而過度減小。 【實施方式】 對於本發明之其他優點、目的、技術特徵及功效，係能 夠藉由以下配合圖式之本案較佳實施例的詳細說明，而趨於 瞭解： 請參考第三圖，顯示本發明風扇驅動電路之結構，主要 包括：一驅動單元10，係可用以驅動一風扇運轉；一控制單 元20，係t氣連接（以下皆包含有線或無線之方式）前述驅動 单元10，6又於一風扇馬達（未顯示於圖中）之一馬達線圈單元 30，係電氣連接該驅動單元1〇或/及控制單元2〇 ,藉以使所 述馬達線圈單元30受前述驅動單元10驅使而作動（例如： 馬達線圈單元30之作動電流、電壓值等，惟不以此為限，而 該電流、電壓值之高低產生不同的激磁，導致上述風扇馬達 轉動之快慢)並得被上述控制單元20操控其運作狀態，在一 可行之實賴式巾’該馬達_單元3()係可由補片與漆包 線斤、且成之疋子此外’應用本發明之前述馬達線圈單元3〇 的直流阻抗值可製作得較預定規格低(該預定規格係由使用 者或購買者指定風扇規㈣得知），細麟—參考準位該 2考準位係大於使用麵購買者指定風扇規格（以下簡稱指 定風扇）在自由流場下之轉速或最大流量而對應的一預設準 位（稍後詳述）； 一-調整單元4〇，係電氣連接上述控制單元2〇及馬達線圈 單元30，俾接收前述馬達線圈單元3〇之信號(亦即，該參考 準位，例如：流通馬達線圈之電流，惟不以此為限），藉由所 述調整單it 40將上述參考準位比對前述預設準位，在該參考 準位大於預設準位之情形中’所述調整單元4()依據上述預設 準位傳輸-箱制準位予前述控制單元2〇，俾由該控制單元卻 限制所述驅動單元10之輸出準位等於上述預設準位至前述馬 魏圈料達戰_紅、降低）目齡前述馬達 線圈單元30的直流阻抗值(或稱繞阻)所可能導致該風扇馬達 ^高轉速，而使賴扇馬達之轉速她值或其崎動之氣流 量（於自由流場無背壓之開放的系統中）符合使用者之預定L 規格；此外，所述驅動單元、控制單元、調整單元係設於所 1325220 年月曰修正替換貝j 賴扇馬達巾或為-獨立的電路結構而與所述風扇馬達分 離，更可整合於-積體電路中，皆為可行之實施模式。 在另一可行之實施模式中，所述調整單元40可進一步包 含：-感測單元4i，係用以感知通過上述馬達線圈單元3〇 之電流並減成為-參考準位(例如：可藉由前述電流流經一 負载來產生參考電慶，未顯示於圖令）；一比較單元42係電 氣連接該感測單it 41，俾輸人或接收所述參考準位；一設定 單元43係電氣連接上述比較單元42 ’前述設定單元犯可依 規格(使黯㈣胃者蚊風扇在自域場下之轉速或最大 流量）而於生麟設定祕給該預設準位（可姻滿足前述 規格所需之通過上述馬達線圈單元3G的電流於—負載來產生 預設電壓，未顯示於圖中）並將其傳輸予前述比較單元42， 藉由所述比較單元42對照上述預設準位與參考準位可輸出一 調整信號（亦即箝制準位）予前述控制單元2〇 ,令該控制單元 2〇依其接收所述調整單元40之調整信號（亦即箝制準位）來 控制或調整該馬達線圈單元30作動於預設準位，藉由箝制準 位限制流經所述馬達線圈單元30之作動電流來保持風扇馬達 的轉速(於開放的系統中），可使該風扇馬達之轉速或其所帶 動之氣流罝（於自由流場無背壓之開放的系統中）符合使用 者之預定規格。 據上所述，本發明具有以下之優點： 1325220^-^ 日修疋泛换 98.IX. Description of the Invention: [Technical Field of the Invention] The present invention relates to a "structure of a fan drive circuit", and more particularly to a fan having a free flow rate or a maximum flow rate in accordance with a predetermined specification, and a fan of 7 The structure of the fan drive circuit in which the flow rate of the ridge field towel is reduced by four degrees. [Prior Art] The drive circuit of the general-purpose fan motor is connected to the motor coil to provide the power required for the fan motor to operate. The maximum flow rate generated by the operation of the fan motor described above is predetermined before production (for example, purchase As specified by the manufacturer, the DC resistance value (or winding resistance) of the aforementioned motor coil is also fixed, but 'the air volume that can be driven by the fan motor during the non-free flow field of the back pressure. Decrease as the pressure increases (please refer to the pressure flow curve P-Qcurve of the conventional fan shown in Figures 1 and 2, the first and second figures are respectively the axial flow fan and the centrifugal fan when the back pressure is zero. The value of the maximum flow rate in the free flow %) 'causes the work done by the fan motor to be smaller, so that the current flowing through the motor coil is reduced, and the flow rate driven by the fan motor is excessively reduced, so the heat convection is greatly reduced." Therefore, it is necessary to improve the disadvantage that the flow rate of the conventional fan motor is greatly reduced by the back pressure. SUMMARY OF THE INVENTION In order to solve the above-mentioned shortcomings of the prior art, the main object of the present invention is to provide a structure of a fan driving circuit, which reduces the winding resistance of the motor coil and is matched with the σ comparison unit m through the motor shaft. The electric limit is limited so that the speed at which the fan motor operates or the maximum flow rate it drives is in accordance with the specified specifications. The sub-purpose of the present invention is to reduce the current level of the flowable motor coil by reducing the resistance of the Ma Wei circle. When the fan motor is operated on the system with back pressure, the county can suppress the current quasi-face compensation. The speed is automatically increased and the brittle fan flow is increased (4) to increase excessively to enhance the characteristics of the fan. The structure of the fan-crane circuit of the present invention is electrically connected to the motor and the unit of the fan motor, and mainly includes: a driving unit electrically connecting the motor coil unit, The driving unit is configured to drive the fan motor to operate; the control unit electrically connects the driving unit or/and the motor coil unit to control the operating state of the motor coil unit, and the DC coil value of the motor coil unit is made lower than a predetermined specification. By obtaining a reference level, the reference level is greater than a predetermined level of the speed or maximum flow (four) of the fan or the specified fan in the free flow field; the adjustment unit is electrically connected to the above control The demodulation unit and the motor coil receive the reference level of the motor coil unit, and the reference level is compared with the preset level by the adjustment, and the reference level is greater than the pre-level and the level In the case, the adjustment unit transmits according to the above-mentioned preset level-clamping level finger-operating unit, and the output level of the driving unit is equal to The preset level is to the motor coil unit to adjust (or positively, decrease) to reduce the DC resistance value of the motor unit, thereby causing the fan motor to rotate at a higher speed, and the initial value of the fan motor Or the flow rate of the gas that is moved by the user meets the predetermined specifications of the user. When the structure of the fan drive circuit is placed in the non-free flow field (4) of the back pressure, even if the fan motor is operated in the system (4) The current of the motor coil is reduced, and the compensation can be obtained by using the previously suppressed reference level, so that the automatic rotation speed is increased, so that the fan flow rate is not excessively reduced by the increase of the (four) pressure. [Embodiment] Other advantages, objects, features, and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments of the present invention. The structure of the fan driving circuit mainly includes: a driving unit 10, which can be used to drive a fan to operate; a control unit 20, which is a gas connection (the following includes wired or wireless means), the driving unit 10, 6 is further One of the motor coil units 30 of the fan motor (not shown) is electrically connected to the drive unit 1 or/and the control unit 2 to actuate the motor coil unit 30 by the drive unit 10 (for example) : the operating current, the voltage value, and the like of the motor coil unit 30, but not limited thereto, and the current and voltage values generate different excitations, which causes the fan motor to rotate rapidly) and is controlled by the control unit 20. Operational state, in a practical way, the motor_unit 3 () can be made up of patches and enamelled wires, and made into a raft before the application of the invention The DC resistance value of the motor coil unit 3〇 can be made lower than the predetermined specification (the predetermined specification is known by the user or the purchaser to specify the fan gauge (4)), and the reference level of the reference unit is greater than the use surface. The purchaser specifies a predetermined level (hereinafter detailed) corresponding to the speed or maximum flow of the fan specification (hereinafter referred to as the designated fan) in the free flow field; an adjustment unit 4 is electrically connected to the above control unit 2 And the motor coil unit 30, 俾 receives the signal of the motor coil unit 3〇 (that is, the reference level, for example, the current flowing through the motor coil, but not limited thereto), by the adjustment unit it 40 Comparing the above reference level to the foregoing preset level, in the case where the reference level is greater than the preset level, the adjusting unit 4() is provided to the foregoing control unit according to the preset level transmission-box level In other words, the control unit limits the output level of the driving unit 10 to be equal to the preset level to the DC coil of the motor coil unit 30. Or a winding Can cause the fan motor to rotate at a high speed, and the value of the speed of the fan motor or its rugged air flow (in a system with no back pressure in the free flow field) meets the user's predetermined L specification; The driving unit, the control unit, and the adjusting unit are respectively disposed in the 1325220 替换 替换 替换 替换 或 或 或 或 或 或 或 或 或 或 或 或 或 或 或 或 或 或 或 或 或 或 或 或 或 或 或 或 或 或 或 或 或 或All are feasible implementation models. In another possible implementation mode, the adjusting unit 40 may further include: a sensing unit 4i for sensing the current passing through the motor coil unit 3 and reducing it to a reference level (for example, by using The current flows through a load to generate a reference signal, which is not shown in the figure); a comparison unit 42 electrically connects the sensing unit it 41, inputs or receives the reference level; and a setting unit 43 is electrically Connecting the above comparison unit 42 'the aforementioned setting unit can be secreted according to the specifications (such that the 黯(4) stomach mosquito fan is at a speed or maximum flow rate from the field field), and the setting is secreted to the predetermined level. The current through the motor coil unit 3G is required to generate a preset voltage, which is not shown in the figure, and is transmitted to the comparison unit 42 by the comparison unit 42 in comparison with the preset level. The reference level can output an adjustment signal (ie, a clamp level) to the control unit 2, and the control unit 2 can control or adjust according to the adjustment signal (ie, the clamp level) of the adjustment unit 40. The The motor coil unit 30 is actuated at a predetermined level, and the driving current of the motor coil unit 30 is restricted by the clamping level to maintain the rotation speed of the fan motor (in an open system), and the rotation speed of the fan motor or The airflow that it drives (in a system where the free flow field is open without back pressure) meets the user's predetermined specifications. According to the above, the present invention has the following advantages: 1325220^-^ Daily repair and replacement 98.
1·當風扇驅動電路之結構置入有背壓之非自由流場的系 統中，由於前述背壓之作用將導致該風扇馬達所能產生的氣 流量發生變化（請參考第六圖所示之軸流式風扇的風壓對風 量變化之示意圖a、請參考第七圖所示之離心式風扇的風壓對 風量變化之示意圖b)，利用本發明指定風扇之所述馬達線圈 單元30的直流阻抗值（或稱繞阻值）可製作得較預定規格低而 令前述參考準位(例如：流經所述馬達線圈單元3〇之作動電 流)遠較習知技術來得高，因此，即使所述風扇馬達運轉於受 有月壓之糸統而導致流通前述馬達線圈之電流降低’利用本 發明原先被抑制之參考準位（例如：電流準位）即可獲得補償 (亦即，原先參考準位大於預設準位而應使所述驅動單元1〇 有較高之輸出準位，卻由於所述調整單元4〇令該控制單元2〇 限制所述驅動單元1 〇之輸出準位而因此被截去之振幅可在此 得到應用，請參考第五a、五b圖），使得轉速自動增加，得 以使風扇流量不因背壓的增加而過度減小，進而提升風扇之 特性(請參考第六、七圖之a，、b，），改善習知技術一旦受有 背屢即導致前料達線齡通之電麵低，更令該風扇馬達 所作之功亦隨之變小，而使風扇馬達所帶動之流量過度減 少，熱對流因此大幅降低（請參考第四&、四1)圖）。 2.藉由降低馬達線圈之繞阻並配合比較單元，將流通馬 達線圈之電流予以限制，以使風扇馬達運轉之速度或其所帶 13252201. When the structure of the fan drive circuit is placed in a system with back pressure non-free flow field, the air flow generated by the fan motor will change due to the aforementioned back pressure (please refer to the figure shown in Figure 6). Schematic diagram of the change of the air pressure of the axial flow fan to the air volume a. Please refer to the schematic diagram b) of the wind pressure change of the centrifugal fan shown in the seventh figure, and specify the DC of the motor coil unit 30 of the fan by the present invention. The impedance value (or the winding resistance value) can be made lower than the predetermined specification so that the aforementioned reference level (for example, the operating current flowing through the motor coil unit 3〇) is much higher than the conventional technique, so even The fact that the fan motor is operated on a system that is subjected to monthly pressure causes a decrease in the current flowing through the motor coil. The compensation can be obtained by using the reference level (for example, current level) that was originally suppressed by the present invention (that is, the original reference standard) If the bit is greater than the preset level, the driving unit 1 should have a higher output level, but the adjusting unit 4 causes the control unit 2 to limit the output level of the driving unit 1 The intercepted amplitude can be applied here, please refer to the fifth and fifth b), so that the speed is automatically increased, so that the fan flow is not excessively reduced due to the increase of the back pressure, thereby improving the characteristics of the fan (please refer to In the sixth and seventh figures a, b,), the improvement of the conventional technology, once it is backed up, leads to the low level of electricity that is expected to reach the age of the cable, and the work done by the fan motor is also reduced. The flow rate driven by the fan motor is excessively reduced, and the heat convection is greatly reduced (refer to the fourth & 4, 1). 2. By reducing the winding resistance of the motor coil and matching the comparison unit, the current flowing through the motor coil is limited to make the fan motor run at a speed or 1325220
9# A 動之最大流量值符合指定規格。 本發明未見公開及使用，亦符合發明專利要件，爰依法 提出申請，謹請賜准專利，是所至盼。 需陳明者’以上所述僅為本案之較佳實施例’並非用以 限制本創作，若依本創作之構想所作之改變，在不脫離本創 作精神範圍内，例如：對於構形或佈置型態加以變換，對於 各種變化’修飾與應用’所產生等效作用，均應包含於本案 之權利範圍内，合予陳明。 【圖式簡單說明】 第―、二圖係習知壓力流量曲線示意圖。 第三圖本發明風扇驅動電路之結構方塊示意圖。 第四a、四b圖係習知驅動電路受背壓導致流通馬達線圈電流 下降之示意圖。 第五a、五b圖係本發明風扇驅動電路受背壓導致流通馬達線 圈電流下降仍保持預設準位之示意圖。 第丄 ^ /、、七圖係比較本發明與習知技術壓力流量曲線示意圖。 【主要元件符號說明】 10驅動單元 20控制單元 30馬達線圈單元 1325220 年月曰修疋替換巧 9B, 8——1 40調整單元 41感測單元 42比較單元 43設定單元The maximum flow value of 9# A moves to the specified specifications. The invention has not been disclosed and used, and is also in conformity with the requirements of the invention patent, and the application is made according to law, and the patent is granted, which is what you hope. It is to be understood that the above description is merely a preferred embodiment of the present invention 'is not intended to limit the creation of the present invention. If the changes made in accordance with the concept of the present creation are within the scope of the spirit of the creation, for example, for the configuration or arrangement The type is transformed, and the equivalent effect of the various modifications 'modification and application' should be included in the scope of the case and combined with Chen Ming. [Simple description of the diagram] The first and second diagrams are schematic diagrams of the conventional pressure flow curve. FIG. 3 is a block diagram showing the structure of a fan drive circuit of the present invention. The fourth and fourth b diagrams are schematic diagrams of the conventional drive circuit being subjected to back pressure causing the current of the circulating motor coil to drop. The fifth and fifth b diagrams are diagrams showing that the fan drive circuit of the present invention is subjected to back pressure and the current of the circulating motor coil is maintained at a predetermined level. The 丄^,,, and seven figures compare the pressure flow curves of the present invention with the prior art. [Description of main component symbols] 10 drive unit 20 control unit 30 motor coil unit 1325220 曰 曰 疋 9 9B, 8 - 1 40 adjustment unit 41 sensing unit 42 comparison unit 43 setting unit