排氣罩由罩體、上部和下部組成。罩體由三個平面組成，罩體由前、后、左、右四個平面(或擋板)組成，形成一個錐體。所述錐形體的下端與蓋體連接，所述錐形體的上端與抽油煙機連接。活動擋板在抽油煙機本體的兩側或靠近窗口的抽油煙機兩側打開。前擋板有凹槽，美觀精致，能完全排出油煙。同時，它不污染環境，有益于人體健康。
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.
濟南排煙罩廠家認為，鐵制排煙罩是指蓋在爐頂上，有一個與排煙管相連的孔的矩形鐵制通風柜。利用熱空氣上升的原理，將油煙自然排出室內。這種排煙罩工藝簡單，成本低，但排煙效果差，只適用于排煙較少的小型餐飲場所。目前還沒有指定尺寸的產品，必須根據炊具的尺寸現場制作。
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)油煙吸收率應大于95%，并應采用相同的分流罩裝置。
(1) The oil smoke absorption rate shall be greater than 95%, and the same shunt hood device shall be used.
(2)圍護結構應設置鉸鏈式檢查門，便于衛生清洗和觀察。
(2) The enclosure shall be provided with hinged inspection doors to facilitate sanitary cleaning and observation.
(3)采用不銹鋼制作，所有接頭應防水、防蒸汽、油防煙。
(3) Made of stainless steel, all joints shall be waterproof, steam proof, oil and smoke proof.
(4)擋風玻璃預埋在天花板上，中間用不銹鋼裝飾板，由不銹鋼制成，厚度1.2mm，便于拆卸，預埋深度≥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)所有蓋板均采用厚度大于1.0mm的不銹鋼板。
(5) All cover plates shall be made of stainless steel plates with a thickness greater than 1.0mm.
(6)抽油煙機的立板設有一體式自清洗裝置，出油口易于清洗油煙和蒸汽。排氣管為不銹鋼材質，與抽油煙機的自動自潔裝置并聯連接。
(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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