The smoke exhaust hood is a device installed at the flue gas outlet to reduce the influence of downdraft on the combustion performance of the burner; It is conducive to smoke exhaust and smoke escape when the flue is blocked.

二、麻豆国产视频罩的分類:

2、 Classification of smoke hoods:

麻豆国产视频罩分為商用麻豆国产视频罩和家用麻豆国产视频罩。商用麻豆国产视频罩分普通煙罩和運水煙置，家用的分頂吸煙罩和側吸煙置。小編在這裏先帶領大家認識一下商用煙置中的普通麻豆国产视频置。

The smoke exhaust hood is divided into commercial smoke exhaust hood and household smoke exhaust hood. Commercial smoke hoods are divided into ordinary smoke hoods and water carrying smoke hoods, and household smoke hoods are divided into top smoke hoods and side smoke hoods. Xiao Bian will first introduce you to the common smoke exhaust devices in commercial smoke exhaust devices.

這種麻豆国产视频罩是由罩體和罩蓋上下兩部分構成，罩體由三個平麵組成，罩蓋由前、後、左、右四個平麵(或稱擋板)構成一個錐體。該麻豆国产视频罟是飯店酒店學核食堂等後同更堂用的一種集油煙罩，苦體水平投影麵為長方形的。橫載麵似半邊的橢圓形。長度根據灶具的數量和擺放長度決定，高度為550mm，寬度一般在1250mm，前沿帶送風裝置的總寬為1500mm左右。置體內一側以60°的斜度裝有迷宮式過濾油網，有一定的油煙過濾能力。該麻豆国产视频罩大小可根據現場情況量身定製，材質不鏽鋼和白鐵皮居多。

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 smoke exhaust hood is a kind of oil collecting hood used in the same hall as Xuehe Canteen in hotels, etc. The horizontal projection surface of the bitter body is rectangular. The transverse load surface is like an ellipse on half side. The length is determined according to the number and placement length of the cooker, the height is 550mm, the width is generally 1250mm, and the total width of the front air supply device is about 1500mm. Labyrinth oil filter screen is installed on one side of the housing with a 60 ° slope, which has a certain oil smoke filtering capacity. The size of the hood can be customized according to the site conditions, and the materials are mostly stainless steel and white iron sheet.

三、廚房油煙排風量的確定

3、 Determination of exhaust air volume of kitchen lampblack

(1)按換氣次數確定排風量。各家廚房差別較大，廚房麵積與廚具、爐灶的數量不成正比，同樣灶的產生的汙染物和熱量也差別很大。實際上廚房通風並非是通風，按換氣次數設計風量會有很大的誤差

(1) Determine the exhaust air volume according to the number of air changes. Different kitchens are quite different. The kitchen area is not proportional to the number of kitchenware and stoves, and the pollutants and heat generated by the same stoves are also very different. In fact, the kitchen ventilation is not comprehensive ventilation, and there will be a large error in the design of air volume according to the number of air changes

(2)按汙染物散發量的多少設計。排風量GB18483-2001飲食業油煙排放標準規定每個灶頭需風量2000m3/h。

(2) It is designed according to the amount of pollutant emission. The environmental protection GB18483-2001 cooking fume emission standard stipulates that each stove needs 2000m3/h.

(3)以煙罩的大小來確定風量。以煙罩下沿和灶台之間的進風麵積和進風速度的乘積來計算風量較為合適。排風量可按下式計算:G=3600L(h2-h1)Vx.m3/hL

(3) The air volume is determined by the size of the hood. It is appropriate to calculate the air volume by the product of the air inlet area and air inlet velocity between the lower edge of the hood and the hearth. The exhaust air volume can be calculated as follows: G=3600L (h2-h1) Vx.m3/hL

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