我们生产的济南排烟罩，它采用撞击流原理，其核心技术设备是一种主动的高速气液接触装置。设备具有传质系数高、体积小、净化效率高、能耗较低的特点，其油烟净化效率可达95%以上。系统中的反应箱中无机械动力及控制装置的气液接触机构，是现有的油烟净化设备中净化效率较高、运行成本低、体积小的油烟净化装置。
Jinan exhaust hood, which is produced by us, adopts the principle of impinging stream. Its core technical equipment is an active high-speed gas-liquid contact device. The equipment has the characteristics of high mass transfer coefficient, small volume, high purification efficiency and low energy consumption, and its oil fume purification efficiency can reach more than 95%. There is no gas-liquid contact mechanism of mechanical power and control device in the reaction box of the system. It is the fume purification device with higher purification efficiency, lowest operation cost and smallest volume in the existing fume purification equipment.
排烟罩是由罩体和罩盖上下两部分构成，罩体由三个平面组成，罩盖由前、后、左、右四个平面（或称挡板）构成一个锥体。其锥体的下端与罩体相连，上端与抽油烟机相连，活动挡板开在罩体或罩盖靠近窗户的任意一面，前挡板带有缺口美观、精致，抽油烟彻底，同时不污染环境，有利于人体健康，结构简单，造价便宜。
The exhaust hood is composed of a hood and upper and lower parts of the hood. The hood is composed of three planes. The hood consists of four planes (or baffles) which are front, rear, left and right. The lower end of the cone is connected with the hood body, the upper end is connected with the hood hood, and the movable baffle is opened on any side of the hood body or the cover near the window. The front baffle has a beautiful and delicate gap, and the smoke is exhaustive, without polluting the environment, which is beneficial to human health, simple structure and low cost.
铁制排烟罩仅为一矩形铁制罩子，上开一孔接排烟管，罩在灶台的上方。利用热空气上升的原理使油烟自然抽出室外。该种排烟罩工艺简单，成本低廉，但排烟效果较差，只适用于烟雾不大的小型饮食场所。目前没有定型产品，而是根据灶具的大小现场制作。
The iron exhaust hood is only a rectangular iron hood with a hole connected to the exhaust pipe and covered above the stove table. By using the principle of hot air rising, the lampblack can be pumped out of the room naturally. The smoke exhaust hood has the advantages of simple process and low cost, but its smoke exhaust effect is poor, and it is only suitable for small food places with little smoke. At present, there are no stereotyped products, but according to the size of the kitchen on-site production.
排烟罩罩口的截面形状尽可能与烟气散发源的水平投影相似。
As far as possible, the cross-section shape of the hood is similar to the horizontal projection of the smoke emission source.
排烟罩的收缩角度口宜等于或小于60°，大不应大于90°。为了降低排烟罩的高度，对于边长较长的矩形排烟罩可将长边分段设置。
The shrinkage angle of the exhaust hood should be equal to or less than 60 degrees, and the maximum should not be greater than 90 degrees. In order to reduce the height of exhaust hood, the long side of rectangular exhaust hood can be segmented.
排烟罩罩口边宜留有一定高度的垂直边（裙边），垂直边的高度为罩口面积。
The vertical edge (skirt edge) of the hood should be kept at a certain height, and the height of the vertical edge should be the hood area.
More details can be consulted by clicking on our official website: http://www.jnqsg.com./
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