說實話我們都知道，負壓風機和正壓風機是一個通風降溫功效十分非常好的設施。問題來了，什么是負壓風機和正壓風機呢?一起來掌握下?！　?/p>

什么是負壓風機和正壓風機

　　負壓風機因為它的特性是由居室的空氣排掉、使居室空氣稀缺而相對性外部是屬于氣體壓強為負值，因而就叫負壓風機。

　　而正壓風機，能解讀為強制性送風進居室，換句話說將佳鋒負壓風機的安裝大方向、由原來的向外排氣管變為往里面送風，這就是正壓風機了。

　　負壓風機因為它的特性是由居室的空氣排掉、使居室空氣稀缺而相對性外部是屬于氣體壓強為負值，因而就叫負壓風機。正壓風機將佳鋒負壓風機的安裝大方向、由原來的向外排氣管變為往里面送風。

　　負壓風機的原理是當電動機根據連軸器或皮帶輪推動主動軸旋轉時，組裝在轉動軸上的傳動齒輪推動從動輪上的傳動齒輪，按相反方向同歩轉動，使齒合的電機轉子相伴旋轉，進而使殼體與電機轉子產生一個室內空間，汽體從進風口進入空間。這時候空氣會得到縮小并被電機轉子擠壓排氣口，而另一個電機轉子則轉至與**個電機轉子在縮小逐漸的相對位置，與殼體的另一邊產生一個新領域，一個新的汽體又進到這一室內空間，被擠出出。持續健身運動進而做到鼓風機的目地。

　負壓風機和正壓風機的差別

　　1、組裝不一樣

　　正壓風機一般安裝在房屋建筑相對性高的窗子，而負壓風機一般會安裝在廠區的窗戶外，安裝到下風口，有利于向外邊排風，室外新鮮的空氣進到，具有空氣熱對流的功效。

　　2、排氣管基本原理不一樣

　　負壓風機是向外排出空氣，讓居室空氣稀缺，進而造成負壓力區，外部的空氣流進來，具有通氣的實際效果。

　　正壓風機恰好相反，這是向居室抽真空。

　　3、作用不一樣。

　　負壓風機重點是通風降溫、清除臭味及其清除塵土。

　　正壓風機一般情況下多運用在脫險樓梯道中，當發生安全事故情況下，其里邊的電機遇打開出風口，感溫煙感探測器或手動式消防報警系統會運行，塔屋頂正壓風機自動式打開，對送風立井施加壓力送風，室內樓梯的前處理室通過正壓送風嘴會持續不斷的對前處理室送風，讓前處理室維持正壓，保證煙塵不會再此地域擴散，而給人脫險的室內空間。當環境溫度超出280℃世人早已并沒有脫險的很有可能，其里邊斷路器會融斷，出風口自動式關閉，防止火災擴散。

　　另一種正壓風機與負壓風機差別:

　　一、基本原理不一樣

　　1、正壓風機：將戶外氣壓送進房間內。

　　2、負壓風機：向外排出來空氣使房間內標準氣壓降低，房間內空氣變較稀，產生一個負壓力區，空氣因為氣壓差賠償注入房間內。

　　二、產品特點不一樣

　　1、正壓風機：當一棟工程建筑發生火災時，它會造成很多的濃煙、一氧化碳等有害氣體并阻塞視野，根據正壓通風機逃出消防樓梯，使房間內濃煙沒法抵達室內樓梯，為大家脫險發揮特長。

　　正壓風機一般組裝在房屋建筑頂端，與各層正壓電動風閥相接。火災事故前期，開啟進氣閥，運行正壓風機，使樓梯口、電梯間處在正壓情況(送風情況)。

　　2、負壓風機：整個設備選用CAD/CAM設計，具備注資低成本、排風量大、噪音低、耗能低、運作平穩、使用壽命長、效果好等特性。百葉窗簾可自動升降關掉，做到防污、防潮、漂亮的目地。可吹風機或排風，是當代生產車間制冷自然通風的**的選擇。環境保護環保型負壓風機將變成通風設備銷售市場的流行。

　　以上關于正壓風機與負壓風機的區別由上海瑞柘環保小編2022年六月底原創!

　　To tell the truth, we all know that negative pressure fan and positive pressure fan are very, very good facilities for ventilation and cooling. The question is, what are negative pressure fans and positive pressure fans? Let's master it together.

　　What are negative pressure fan and positive pressure fan

　　Negative pressure fan is called negative pressure fan because its characteristic is that it is discharged by the air in the room, making the air in the room scarce, and the external relativity is that the gas pressure is negative.

　　The positive pressure fan can be interpreted as forced air supply into the room. In other words, the installation direction of Jiafeng negative pressure fan is changed from the original outward exhaust pipe to inward air supply. This is the positive pressure fan.

　　Negative pressure fan is called negative pressure fan because its characteristic is that it is discharged by the air in the room, making the air in the room scarce, and the external relativity is that the gas pressure is negative. The positive pressure fan changes the installation direction of Jiafeng negative pressure fan from the original outward exhaust pipe to inward air supply.

　　The principle of negative pressure fan is that when the motor drives the driving shaft to rotate according to the coupling or belt pulley, the transmission gear assembled on the rotating shaft drives the transmission gear on the driven wheel to rotate in the same step in the opposite direction, so that the toothed motor rotor rotates together, so that the housing and the motor rotor create an indoor space, and the steam enters the space from the air inlet. At this time, the air will be reduced and squeezed by the motor rotor into the exhaust port, while the other motor rotor will turn to the relative position with the first motor rotor gradually reduced, creating a new field with the other side of the shell, and a new steam will enter the indoor space and be squeezed out. Continue to exercise to achieve the goal of the blower.

　　Difference between negative pressure fan and positive pressure fan

　　1. Different assembly

　　The positive pressure fan is generally installed in the windows with high relativity of buildings, while the negative pressure fan is generally installed outside the windows in the plant area and installed at the lower air outlet, which is conducive to the outward exhaust, and the outdoor fresh air enters, with the effect of air heat convection.

　　2. The basic principle of exhaust pipe is different

　　The negative pressure fan is used to discharge the air outward, which makes the air in the room scarce, and then causes the negative pressure area. The external air flows in, which has the actual effect of ventilation.

　　Positive pressure fan is just the opposite, which is to vacuum the room.

　　3. The effect is different.

　　The key points of negative pressure fan are ventilation and cooling, odor removal and dust removal.

　　Normally, the positive pressure fan is mostly used in the escape stairway. In case of safety accident, when the motor inside opens the air outlet, the temperature and smoke detector or the manual fire alarm system will operate. The positive pressure fan on the tower roof will automatically open to apply pressure to the air supply shaft. The pre-treatment room of the indoor stairs will continuously supply air to the pre-treatment room through the positive pressure air supply nozzle, so that the pre-treatment room can maintain positive pressure, Ensure that the smoke and dust will not spread in this area and give people an indoor space to escape from danger. When the ambient temperature exceeds 280 ℃, it is very likely that the world has not been out of danger for a long time. The circuit breaker inside will melt off and the air outlet will be closed automatically to prevent the spread of fire.

　　Difference between another positive pressure fan and negative pressure fan:

　　1、 Different basic principles

　　1. Positive pressure fan: sends outdoor air pressure into the room.

　　2. Negative pressure fan: the air discharged from the outside reduces the standard air pressure in the room, and the air in the room becomes thinner, creating a negative pressure zone. The air is injected into the room because of the pressure difference.

　　2、 Different product features

　　1. Positive pressure fan: when a fire occurs in an engineering building, it will cause a lot of smoke, carbon monoxide and other harmful gases and block the view. According to the positive pressure fan, it escapes from the fire stairs, making it impossible for the smoke in the room to reach the indoor stairs, so as to give full play to its strengths for everyone to escape from danger.

　　The positive pressure fan is generally assembled at the top of the building and connected with the positive pressure electric air valve on each floor. In the early stage of the fire accident, open the air inlet valve and operate the positive pressure fan to make the stairwell and elevator room under positive pressure (air supply).

　　2. Negative pressure fan: cad/cam design is adopted for the whole equipment, which has the characteristics of low capital injection cost, large exhaust air volume, low noise, low energy consumption, stable operation, long service life and good effect. The shutter curtain can be automatically lifted and closed to achieve antifouling, moisture-proof and beautiful destination. It can be blower or exhaust, which is the best choice for natural ventilation of refrigeration in contemporary production workshops. Environmental protection and environmental protection type negative pressure fans will become popular in the ventilation equipment sales market.

　　The above difference between positive pressure fan and negative pressure fan was created by Shanghai Ruizhe environmental protection Co., Ltd. at the end of June 2022!