排气罩由罩体、上部和下部组成。罩体由三个平面组成，罩体由前、后、左、右四个平面(或挡板)组成，形成一个锥体。所述锥形体的下端与盖体连接，所述锥形体的上端与抽油烟机连接。活动挡板在抽油烟机本体的两侧或靠近窗口的抽油烟机两侧打开。前挡板有凹槽，美观精致，能完全排出油烟。同时，它不污染环境，有益于人体健康。
The exhaust hood is composed of a cover body, an upper part and a lower part. The cover body is composed of three planes, and the cover body is composed of four planes (or baffles) front, rear, left and right, forming a cone. The lower end of the conical body is connected with the cover body, and the upper end of the conical body is connected with the range hood. The movable baffle is opened at both sides of the range hood body or at both sides of the range hood close to the window. The front baffle has grooves, which are beautiful and exquisite, and can completely discharge oil smoke. At the same time, it does not pollute the environment and is beneficial to human health.
济南排烟罩厂家认为，铁制排烟罩是指盖在炉顶上，有一个与排烟管相连的孔的矩形铁制通风柜。利用热空气上升的原理，将油烟自然排出室内。这种排烟罩工艺简单，成本低，但排烟效果差，只适用于排烟较少的小型餐饮场所。目前还没有指定尺寸的产品，必须根据炊具的尺寸现场制作。
Jinan smoke exhaust hood manufacturer believes that the iron smoke exhaust hood refers to a rectangular iron fume hood covered on the furnace top and with a hole connected with the smoke exhaust pipe. Using the principle of hot air rising, the oil smoke is naturally discharged into the room. The smoke exhaust hood has the advantages of simple process and low cost, but the smoke exhaust effect is poor. It is only suitable for small restaurants with less smoke exhaust. At present, there is no product with specified size, which must be made on site according to the size of the cooker.
(1)油烟吸收率应大于95%，并应采用相同的分流罩装置。
(1) The oil smoke absorption rate shall be greater than 95%, and the same shunt hood device shall be used.
(2)围护结构应设置铰链式检查门，便于卫生清洗和观察。
(2) The enclosure shall be provided with hinged inspection doors to facilitate sanitary cleaning and observation.
(3)采用不锈钢制作，所有接头应防水、防蒸汽、油防烟。
(3) Made of stainless steel, all joints shall be waterproof, steam proof, oil and smoke proof.
(4)挡风玻璃预埋在天花板上，中间用不锈钢装饰板，由不锈钢制成，厚度1.2mm，便于拆卸，预埋深度≥100mm。
(4) The windshield is embedded on the ceiling with stainless steel decorative plate in the middle. It is made of stainless steel with a thickness of 1.2mm, which is easy to disassemble. The embedded depth is ≥ 100mm.
(5)所有盖板均采用厚度大于1.0mm的不锈钢板。
(5) All cover plates shall be made of stainless steel plates with a thickness greater than 1.0mm.
(6)抽油烟机的立板设有一体式自清洗装置，出油口易于清洗油烟和蒸汽。排气管为不锈钢材质，与抽油烟机的自动自洁装置并联连接。
(6) The vertical plate of the range hood is equipped with an integrated self-cleaning device, and the oil outlet is easy to clean the oil fume and steam. The exhaust pipe is made of stainless steel and connected in parallel with the automatic self-cleaning device of the range hood.
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