The smoke exhaust hood is composed of the hood and the upper and lower parts of the hood. The hood is composed of three planes, and the hood is composed of four planes (front, rear, left and right, or baffle) to form a cone. The lower end of the cone is connected with the hood, and the upper end is connected with the range hood. The movable baffle is opened on either side of the hood or the hood close to the window. The front baffle has a beautiful and delicate notch, which can smoke lampblack thoroughly without polluting the environment. It is conducive to human health, simple in structure, and cheap in cost.

傘形排氣罩

Umbrella exhaust hood

這種排氣罩主要用于洗碗水池、洗碗機及小型的單臺烹調設備的排除污熱氣體，通常安裝在設備的上方，一般不設過濾和凈化裝置。在廚房中采用的傘形罩截面多為長方形。它的特點是結構簡單、容易制造，風量設計合理時排風效果良好，是廚房中必備的設備。

This kind of exhaust hood is mainly used to remove dirty and hot gases from dishwashing basins, dishwashers and small single cooking equipment. It is usually installed above the equipment, and generally does not have filtering and purification devices. The umbrella shaped cover used in the kitchen is mostly rectangular in section. The utility model is characterized by simple structure, easy manufacture, good ventilation effect when the air volume is reasonably designed, and is an essential equipment in the kitchen.

這是濟南廚房排煙常用的一種排油煙罩，罩體水平投影面為長方形的，橫截面似半邊的傘形煙罩。長度根據灶具的數量和擺放長度決定，高度為550 mm，寬度一般在1250 mm，前沿帶送風裝置的總寬為1500 mm左右。罩體內一側以60°的斜度裝有迷宮式過濾油網，有一定的油煙過濾能力，經常在一般餐廳的廚房中使用。

This is a kind of lampblack hood commonly used for smoke exhaust in Jinan kitchens. The horizontal projection surface of the hood is rectangular, and the cross section is like an umbrella shaped hood with half sides. The length is determined according to the number and placement length of the cooker, the height is 550 mm, the width is generally 1250 mm, and the total width of the front air supply device is about 1500 mm. Labyrinth oil filter screen is installed on one side of the hood with a 60 ° slope, which has a certain oil smoke filtering capacity and is often used in the kitchen of ordinary restaurants.

將配有洗滌液的水經水泵加壓后送到煙罩內噴灑成扇形，從罩體下方上來的油污氣體在與扇形水面接觸中被去污凈化，而水經氣液分離扇分離后流回水箱。這就是運水煙罩的基本工作原理。運水煙罩有排污、加水、加洗滌液、循環等整套的自動控制系統，操作使用很方便。經此煙罩凈化后的氣體除油率可達到90%左右基本不再污染管道，由于水霧的隔離作用，這種煙罩還有一定的防火功能。

The water with washing liquid is pressurized by the water pump and sent to the smoke hood to spray into a fan shape. The oily gas coming from below the hood is decontaminated and purified when it contacts the fan shaped water surface, and the water flows back to the water tank after being separated by the gas-liquid separation fan. This is the basic working principle of the hookah hood. The hookah hood is equipped with a complete automatic control system for sewage discharge, water addition, detergent addition, circulation, etc., which is very convenient for operation. The oil removal rate of the gas purified by the smoke hood can reach about 90%, and basically no longer pollute the pipeline. Due to the isolation effect of water mist, the smoke hood also has a certain fire protection function.

（1）油煙吸收率應大于95%，采用同誑導流圍護裝置。

(1) The absorption rate of lampblack shall be greater than 95%, and the same diversion enclosure shall be used.

（2）圍護結構應配有鉸接式檢查門,以便于衛生清潔及觀察。

(2) The enclosure shall be equipped with hinged inspection doors to facilitate sanitary cleaning and observation.

（3）設備全部由不銹鋼制成，所有聯結處為防水、防蒸汽、防油煙。

(3) The equipment is made of stainless steel, and all joints are waterproof, steam proof and oil smoke proof.

（4）風罩嵌入吊頂內，兩者之間設有不銹鋼裝飾板，用厚度1.2mm的不銹鋼板制造，易拆卸，嵌入深度≥100mm。

(4) The air cowl is embedded in the suspended ceiling, and stainless steel decorative plates are set between them, which are made of stainless steel plates with a thickness of 1.2mm, easy to disassemble, and the embedded depth is ≥ 100mm.

（5）全部罩體用厚度大于1.0mm的不銹鋼板制造。

(5) All covers shall be made of stainless steel plates with thickness greater than 1.0mm.

（6）通風管用1.0鍍鋅板制成，設有不銹鋼鐵風量調節閥。

(6) The ventilation pipe is made of 1.0 galvanized sheet and equipped with stainless steel iron air volume regulating valve.

（7）照明設備是防濺，防水、內凹型的，分布于每1000mm距離，并應將所有電線套于導管中，用接駁箱連接。照度裝置大于等于600lux，采用芝光管燈,統一的電力接口。

(7) The lighting equipment shall be splash proof, waterproof, concave type, distributed every 1000mm, and all wires shall be sheathed in conduits and connected with junction boxes. The illuminance device shall be no less than 600lux, and the energy-saving LED lamp and unified power interface shall be adopted.

（8）風罩豎板帶有一體環繞的自排裝置，排放槽易于清洗油煙、蒸汽，排放管為不銹鋼制，并聯風罩的全自動自清潔裝置。

(8) The vertical plate of the fan hood is equipped with an integrated surrounding self-cleaning device. The exhaust groove is easy to clean the oil smoke and steam. The exhaust pipe is made of stainless steel and is connected in parallel with the full automatic self-cleaning device of the fan hood.