誘導(dǎo)風(fēng)機(jī)系統(tǒng)在地下車庫通風(fēng)排煙使用

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一、誘導(dǎo)風(fēng)機(jī)系統(tǒng)的概述

1、 Overview of induction fan system

（一）誘導(dǎo)風(fēng)機(jī)

（1） Induction fan

誘導(dǎo)風(fēng)機(jī)又稱射流風(fēng)機(jī)、接力風(fēng)機(jī)，其能夠散發(fā)的風(fēng)力其實(shí)很小，主要是通過攪勻、等方式，來對某個區(qū)域內(nèi)的空氣進(jìn)行凈化。誘導(dǎo)風(fēng)機(jī)主要是借助高速射流誘導(dǎo)通風(fēng)理念進(jìn)行設(shè)計(jì)的，當(dāng)多臺誘導(dǎo)風(fēng)機(jī)與送風(fēng)風(fēng)機(jī)、排風(fēng)風(fēng)機(jī)進(jìn)行一定的組合，就形成了誘導(dǎo)風(fēng)機(jī)系統(tǒng)。

Induction fan is also known as jet fan and relay fan. Its wind power is actually very small. It mainly purifies the air in a certain area through mixing and removal. The induced draft fan is mainly designed with the help of the concept of high-speed jet induced ventilation. When multiple induced draft fans are combined with supply fans and exhaust fans, the induced draft fan system is formed.

（二）工作原理

（2） Working principle

這種的新型風(fēng)機(jī)系統(tǒng)，主要是借助多臺誘導(dǎo)風(fēng)機(jī)噴嘴射出的定向高速氣流，在無風(fēng)管的條件下，誘導(dǎo)室外的新鮮空氣或經(jīng)過處理的空氣進(jìn)入到預(yù)定的位置，從而室內(nèi)形成良好的氣流組織，達(dá)到便捷的通風(fēng)排煙目標(biāo)。

This advanced new fan system mainly uses the directional high-speed air flow emitted from the nozzles of multiple induction fans to induce the outdoor fresh air or treated air to enter the predetermined position without air duct, so as to form a good indoor air distribution and achieve the goal of convenient and efficient ventilation and smoke exhaust.

（三）系統(tǒng)設(shè)計(jì)

（3） System design

在進(jìn)行誘導(dǎo)風(fēng)機(jī)系統(tǒng)安裝的過程中，回風(fēng)口與障礙物要保持500mm以上的間距，噴嘴出風(fēng)口15°下前方也不能有阻擋的物體，在允許的范圍內(nèi)應(yīng)盡量減小設(shè)備的吊裝高度，一般要求底部要與梁底或管線底處在一個水平線上。

During the installation of induction fan system, the distance between the return air outlet and obstacles shall be more than 500mm, and there shall be no blocking objects in front of the nozzle air outlet under 15 °. The hoisting height of the equipment shall be reduced as far as possible within the allowable range. Generally, the bottom shall be on a horizontal line with the beam bottom or pipe line bottom.

對于該系統(tǒng)的接力風(fēng)速方面，由于現(xiàn)實(shí)中存在著各種因素的影響，如建筑物內(nèi)存在的四面八方的自然風(fēng)，要想使射流風(fēng)速減小到一定數(shù)值，就需要另一股射流進(jìn)行接力，經(jīng)過相關(guān)計(jì)算和分析發(fā)現(xiàn)，保持射流速度1m/s，收到的效果。

For the relay wind speed of the system, due to the influence of various factors in reality, such as the natural wind in all directions in the building, in order to reduce the jet wind speed to a certain value, another jet needs to relay. Through relevant calculation and analysis, it is found that maintaining the jet Center speed of 1m / s has the best effect.

二、傳統(tǒng)通風(fēng)排煙方式的弊端

2、 Disadvantages of traditional ventilation and smoke exhaust

在以前進(jìn)行通風(fēng)排煙時，系統(tǒng)的風(fēng)管規(guī)模很大，需要占用很大空間，而且建設(shè)及安裝費(fèi)用都很高昂，更主要的是難以避免風(fēng)管與電纜橋架、消防噴淋管道等其他管線的交叉問題。

In the previous ventilation and smoke exhaust, the air duct of the system has a large scale, needs to occupy a large space, and the construction and installation costs are very high. The most important thing is that it is difficult to avoid the intersection between the air duct and other pipelines such as cable tray and fire sprinkler pipeline.

在采用了的誘導(dǎo)風(fēng)機(jī)系統(tǒng)后，就大大降低了相關(guān)成本費(fèi)用，并且這個層面都能成為排風(fēng)通道，送風(fēng)和排風(fēng)風(fēng)機(jī)所需要的風(fēng)壓也比管道小的多，這樣就可以選用較低風(fēng)壓的風(fēng)機(jī)，大幅度降低了投資和運(yùn)行成本，即使送排風(fēng)機(jī)停止運(yùn)轉(zhuǎn)，誘導(dǎo)風(fēng)機(jī)仍可運(yùn)轉(zhuǎn)，能對局部產(chǎn)生排煙效果。經(jīng)過多年的理論研究和工程實(shí)踐，誘導(dǎo)風(fēng)機(jī)內(nèi)置率離心風(fēng)機(jī)，具有明顯的噪聲低、體積小、吊裝方便、維護(hù)簡單等優(yōu)勢，當(dāng)前已廣泛應(yīng)用于地下停車場、體育館、倉庫等大型場所的通風(fēng)中，并起到了顯著的效果。

After the advanced induction fan system is adopted, the relevant costs are greatly reduced, and this level can become an exhaust channel, and the wind pressure required by the supply and exhaust fans is much smaller than that of the pipeline. In this way, the fans with lower wind pressure can be selected, which greatly reduces the investment and operation cost. Even if the supply and exhaust fans stop running, the induction fans can still run, It can produce smoke exhaust effect on local areas. After years of theoretical research and engineering practice, the induction fan has built-in high-efficiency centrifugal fan, which has obvious advantages such as low noise, small volume, convenient hoisting and simple maintenance. At present, it has been widely used in the ventilation of underground parking lots, gymnasiums, warehouses and other large places, and has achieved remarkable results.

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