Smoke exhaust fan is a kind of machine which can expel odor, high temperature and lampblack gas in the process of food processing in kitchen. It is widely used in industry and household. Now let's introduce the functions and characteristics of exhaust fan. Now smoke exhaust fans can be divided into two categories: centrifugal fans: air flow moving along the diameter direction of fan impeller; axial fan: air flow moving along the axial direction of fan impeller. The total pressure of centrifugal fan is larger and the motor is blocked out of the high temperature fume gas. It's not easy to damage. Axial flow fan is small, in general, high temperature fume gas through the motor, simple damage. So the kitchen generally advocates the use of centrifugal fans.

　　消防排煙風機在電壓不穩定時應該怎樣應對呢？

　　How to deal with the unstable voltage of fire exhaust fan?

　　消防排煙風機功能十分出色，并且現已得到了廣泛的運用，深受寬廣用戶喜歡，并且消防排煙風機運用性也比較強，在電壓不穩定的狀況下也能運用，排煙風機，不過咱們要合理的操作它，只要這樣才干順暢的完結排煙任務：咱們都知道消防排煙風機的首要適用在介質溫度100℃條件下接連作業20小時/次不損壞，3C消防高溫風機，高層建筑、地下建筑及地道、烘房等通風換氣或高溫排煙。消防排煙風機首要的參數在于其作業溫度、風量、噪聲、全壓、功率、電機功率、轉速及軸功率。高溫消防排煙風機首要適用于高層建筑、地下建筑及地道、烘房等通風換氣或高溫排煙，能在280℃高溫條件下接連作業30分鐘以上，介質溫度100℃ 高溫消防排煙風機出產及運轉的環境首要就是這些，咱們必定要根據闡明合理的利用它，然后使其功能得到充沛的展示。

　　Fire exhaust fan function is excellent, and has been widely used, popular with a wide range of users, and the use of fire exhaust fan is relatively strong, in the unstable voltage conditions can also be used, smoke exhaust fan, but we need to operate it reasonably, as long as this can smoothly complete the task of smoke exhaust: We all know that the fire exhaust fan is mainly suitable for ventilation or high temperature smoke exhaust in high-rise buildings, underground buildings, tunnels, drying rooms, etc. under the condition of medium temperature of 100 degrees Celsius, continuous operation for 20 hours/time without damage, 3C fire-fighting high-temperature fan. The most important parameters of fire exhaust fan are its operating temperature, air volume, noise, full pressure, power, motor power, speed and shaft power. High temperature smoke exhaust fan is mainly suitable for ventilation or high temperature smoke exhaust in high-rise buildings, underground buildings, tunnels and drying rooms. It can work continuously for more than 30 minutes at 280 C. The production and operation environment of high temperature smoke exhaust fan with medium temperature of 100 C is above all these. We must be reasonable according to the explanation. Make use of it, and then make its functions fully displayed.

　　排煙風機是一種可以將廚房中加工食物過程中產生的異味、高溫、油煙氣體敏捷排走的機械，該機器特色是耐高溫功能杰出、效率高。送風口、排煙口風量、余壓值達不到標準要求的現象在工程中比較普遍，有的送風口、排煙口的風速甚接近于零，構成這種現象的原因比較復雜，今天小編為大家具體諒解一下，主要變現在以下幾個方面：

　　Smoke exhaust fan is a kind of machine which can expel the odor, high temperature and lampblack gas produced in the process of food processing in kitchen. The machine features excellent high temperature resistance and high efficiency. The phenomenon that the air volume and residual pressure of air supply outlet, smoke exhaust outlet can not meet the standard requirement is quite common in engineering. The wind speed of some air supply outlets and smoke exhaust outlets is even close to zero. The reasons for this phenomenon are relatively complex. Today, we have a specific understanding, which can be found in the following aspects:

　　合用正壓送風體系未規劃壓差調理設備：按標準要求，機械加壓送風的防煙樓梯間和合用前室，宜別離獨立設置送風體系，當必須共用一個體系時，應在通向合用前室的支風管上設置壓差自動調理設備。目前很多規劃的合用正壓送風體系沒有規劃壓差調理設備，無法構成樓梯間的余壓值高于前室。風機選型不當：按標準要求，防煙樓梯間及前室、合用前室和消防電梯間前室的機械加壓送風量，應由計算斷定，當計算值和標準規則的值不一致時，應按兩者中較大值斷定。有的規劃直接按標準給定的值斷定，往往導致選用的風機風量、風壓偏小，不能滿足要求;有的規劃采用通風與機械排煙合用體系，但施工中未按規劃要求選用雙速風機；有的建設單位不按規劃的風機型號訂貨，購買功率規格較小的風機，導致風機風量嚴重不足。

　　Joint positive pressure air supply system unplanned differential pressure conditioning equipment: According to standard requirements, smoke-proof staircase and joint front room of mechanical pressurized air supply should be separated from the independent air supply system. When a common system must be shared, automatic differential pressure conditioning equipment should be installed on the branch air duct leading to the joint front room. At present, many planned combined barotropic air supply systems do not have planned pressure differential conditioning equipment, which can not constitute a staircase with residual pressure higher than the front room. Improper fan selection: According to the standard requirements, the mechanical pressurized air supply volume of smoke-proof staircase and front room, common front room and front room of fire elevator room should be determined by calculation. When the calculated value is inconsistent with the value of standard rules, it should be determined by the larger value of the two. Some plans are determined directly according to the value given by the standard, which often results in the selection of fan air volume and pressure on the low side and can not meet the requirements; some plans adopt the ventilation and mechanical smoke exhaust system, but the construction of the two-speed fan is not in accordance with the planning requirements; some construction units do not order according to the planned fan model, and purchase power specifications are comparable. Small fan, leading to serious shortage of fan air volume.