丹富斯DFEDRV動態(tài)平衡電動調(diào)節(jié)閥是區(qū)別于傳統(tǒng)的電動調(diào)節(jié)閥的新一代產(chǎn)品，是動態(tài)平衡與電動調(diào)節(jié)一體化的產(chǎn)品。DFEDRV動態(tài)平衡電動調(diào)節(jié)閥在系統(tǒng)負荷波動較大的變流量系統(tǒng)中，當(dāng)系統(tǒng)壓力變化時，動態(tài)平衡電動調(diào)節(jié)閥二端的壓差（P1-P3）也隨之變化：  動態(tài)平衡電動調(diào)節(jié)閥/動態(tài)平衡電動調(diào)節(jié)閥作用
⑴、當(dāng)進口壓力P1升高時，（P1-P2）增大，這時電動閥閥芯向上運動，使P1、P2間開度減少，閥芯壓力P2降低；當(dāng)進口壓力P1降低時，（P1-P2）減小，這時電動閥閥芯向下運動，使P1、P2間開度增大，閥芯壓力P2升高。因此，無論系統(tǒng)的壓力怎樣變化，通過電動閥閥芯的調(diào)節(jié)作用，P2、P3間的壓差始終保持不變。因此這種動閥的抗*力強，具有動態(tài)平衡的功能；動態(tài)平衡電動調(diào)節(jié)閥/動態(tài)平衡電動調(diào)節(jié)閥作用
⑵、當(dāng)直行程電動執(zhí)行器接受控制信號使閥軸延A—B向上下運動（或角行程電動執(zhí)行器接受控制信號使閥軸延R向旋轉(zhuǎn)）時，P2、P3間的開度也隨之變化。由于不管系統(tǒng)壓差（P1-P3）如何變化，P2、P3間的壓差（P2-P3）始終不變，因此對應(yīng)于任一開度位置，其輸送的水流量都是一定的，并且電動調(diào)節(jié)閥實際的流量特性曲線與其理想的流量特性曲線是*的，沒有偏離。因此這種電動調(diào)節(jié)閥較傳統(tǒng)的電動調(diào)節(jié)閥具有更好的調(diào)節(jié)特性。    

產(chǎn)品優(yōu)點
　　1.穩(wěn)定：末端設(shè)備的流量變化不受系統(tǒng)壓力波動的影響，流量變化不相互干擾。 
　　2.節(jié)能：較傳統(tǒng)的系統(tǒng)節(jié)能6-20%
　　3.高效：大大地縮短了調(diào)試時間，系統(tǒng)運行具有高效率。 
產(chǎn)品特點
　　1.驅(qū)動器為直行程，互換性好。 
　　2.流量特性曲線：直線/等百分比
　　3.流量誤差≤5%
　　4.工作溫度：0--100℃

具有優(yōu)良的電動調(diào)節(jié)功能：電動調(diào)節(jié)功能是指閥門能根據(jù)目標(biāo)區(qū)域溫度控制信號的變化自動的調(diào)節(jié)閥門的開度，從而改變水流量，zui終使目標(biāo)區(qū)域的實際溫度與設(shè)定溫度*。評價電動調(diào)節(jié)功能好壞的是電動調(diào)節(jié)閥的流量特性曲線。在空調(diào)系統(tǒng)中，常用的電動調(diào)節(jié)閥的理想流量特性曲線是直線的或者等百分比的。但是對于一般的電動調(diào)節(jié)閥，在實際使用過程中由于閥權(quán)度較小，使得實際的流量特性曲線偏離理想的流量特性曲線。如圖3，某電動調(diào)節(jié)閥理想的流量特性曲線是直線型（曲線1），但是在安裝到系統(tǒng)管路上后實際的流量特性曲線接近快開型（曲線2），調(diào)節(jié)特性變差。動態(tài)平衡電動調(diào)節(jié)閥由于*的閥體結(jié)構(gòu)，在實際的使用工程中閥權(quán)度基本為1，因此其實際的流量特性曲線與理想的流量特性曲線*（如圖4），沒有偏離，因此具有優(yōu)良的電動調(diào)節(jié)功能。

Dan fuss DFDFEDRV dynamic balance of electric control valve is different from traditional electric regulating valve of a new generation of products, product of the integration of dynamic balance and electric adjustment is. DFEDRV dynamic balance of electric control valve in the system load volatile variable flow system, when the system pressure change, on the dynamic balance of electric control valve two differential pressure (P1, P3) changes: 
(1), when the inlet pressure P1 rises, (P1, P2) increases, the electric valve core upward movement, reduce the opening between P1 and P2, valve core pressure P2 lower; Fall, when the inlet pressure P1, (P1, P2) decreases, and the electric valve core movement down, make between P1 and P2 opening increases, the valve core pressure P2. Therefore, no matter what the pressure of the system changes, by regulating the function of electric valve core, pressure difference between P2 and P3 always remain the same. So the dynamic valve anti-interference ability is strong, has the function of dynamic balance; 
Diction, when straight travel electric actuator control signal makes the valve shaft extending A - B from moving up and down (or Angle travel electric actuators to accept control signal delay R to make the valve shaft rotation), P2, P3, the opening between the changed also. Because regardless of system pressure difference (P1, P3) change, P2, P3, the pressure difference between the (P2, P3) is always the same, so the corresponding to any opening position, its conveying water flow is certain, and real flow characteristic curve of the electric control valve and its ideal flow characteristic curve is consistent, without deviation. Therefore, the electric regulator than traditional electric regulator has better regulation characteristics. 
 
Product advantages 
1. Stability: equipment at the end of the flow rate change is not affected by the system pressure fluctuations, changing flow does not interfere with each other. 
2. Energy saving: 6-20% compared with the traditional system energy conservation 
3. Efficient: is greatly shortened the time debugging, system running with high efficiency. 
Product features 
1. The drive for straight travel, good interchangeability. 
2. The flow characteristic curve, linear/percentage, etc 
3. The flow rate error of 5% or less 
4. Working temperature: 0-100 ℃ 
 
Control function: with excellent electric power regulating function refers to the valve can be according to the target area for temperature control signal changes automatically adjust the opening of the valve, so as to change the water flow, eventually make the target area in the same temperature and set temperature. Evaluation of electric regulating function is stand or fall of electric control valve flow characteristic curve. Commonly used in air conditioning systems, electric regulating valve the ideal flow characteristic curve is linear or equal percentage. But for the general electric control valve, in actual use process due to the smaller valve power degree, makes the actual flow characteristic curve deviates from the ideal flow characteristic curve. As shown in figure 3, an electric regulating valve the ideal flow characteristic curve is linear (curve 1), but the actual after installed to the system piping flow characteristic curve (curve 2) close to the quick opening type, regulating characteristics. Dynamic balance of electric control valve because of its unique structure of valve body, valve in the use of actual engineering degree of basic to 1, so the actual flow characteristic curve are consistent with the ideal flow characteristic curve (as shown in figure 4), no deviation, so it has excellent electric regulating function. 

DFEDRV平衡電動調(diào)節(jié)閥材質(zhì)：

DFEDRV動態(tài)平衡電動調(diào)節(jié)閥技術(shù)參數(shù)：

DFEDRV動態(tài)平衡電動調(diào)節(jié)閥尺寸參數(shù)：