通风管道工程的通风类型

发布人：   发布时间：2022-07-06 15:56:00

通风管道工程局部通风是针对公共场所通风系统中空气质量污染严重的个别区域进行控制处理。那么今天给大家介绍一下按照工作原理的不同，可以分为以下几种类型：

Local ventilation of ventilation duct works is to control and deal with individual areas with serious air quality pollution in the ventilation system of public places. Today, I will introduce to you that according to the different working principles, it can be divided into the following types:

1、密闭罩

1. Airtight cover

它把有害物源全部密封在罩内，从罩外吸入空气，使罩内保持负压，它只需要较小的排风量就能对有害物质进行有效控制。

It seals all the sources of harmful substances in the cover, sucks air from the outside of the cover, and keeps negative pressure in the cover. It only needs a small exhaust air volume to effectively control harmful substances.

2、柜式排风罩

2. Cabinet exhaust hood

它的结构与密封罩相似，只是罩的一面全部敞开。

Its structure is similar to the sealing cover, except that one side of the cover is completely open.

3、外部吸气罩

3. External suction hood

由于工艺条件限制，生产设备不能密封时，可采用外部吸气罩，它是利用排风气流的作用，在有害物散发地点造成一定的吸入速度，使有害物吸入罩内。

Due to the limitation of process conditions, when the production equipment cannot be sealed, the external suction hood can be used. It uses the effect of exhaust air flow to cause a certain suction speed at the place where the harmful substances are distributed, so that the harmful substances can be sucked into the hood.

4、接受式排风罩

4. Receiving exhaust hood

有些生产过程或设备本身会产生或诱导一定的气流运动，如高温热源上部的对流等，对这类情况，只需把排风罩设在污染气流前方，有害物随气流直接进入罩内。

Some production processes or equipment itself will produce or induce certain airflow movement, such as convection above the high-temperature heat source. For this kind of situation, it is only necessary to set the exhaust hood in front of the polluted airflow, and the harmful substances will enter the hood directly with the airflow.

5、吸吹式排风罩

5. Suction and blowing exhaust hood

吸吹式排风罩是利用射流能量密集、速度衰减慢，而吸入气流速度衰减快的特点。把二者结合起来，使有害物得到有效控制的一种方法。

The suction and blowing exhaust hood uses the characteristics of jet energy density, slow speed attenuation and fast speed attenuation of suction air flow. A method of combining the two to effectively control harmful substances.

以上就是为大家介绍的有关澳门正版内部资料大公开铁皮风管加工的详细的介绍,希望对您有所帮助.如果您有什么疑问的话,欢迎联系我们.我们将以的态度,为您提供服务

The above is a detailed introduction about the processing of Jinan iron sheet air duct. I hope it will be helpful to you If you have any questions, please contact us We will provide you with professional service