廚房排煙管道安裝要注意什么？

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廚房排煙管道的水平段不宜太長(zhǎng)，一般水平更遠(yuǎn)距離不應(yīng)超過(guò)15m并且要有2%以上的坡度，水平末端設(shè)活接頭，以方便清理油垢。排風(fēng)速度按規(guī)范不得低于 10m/s，以防風(fēng)速過(guò)低使油附著于煙道上，接排風(fēng)罩的支管應(yīng)設(shè)風(fēng)量調(diào)節(jié)閥。 廚房排煙管道的設(shè)計(jì)和安裝不合理，往往會(huì)造成廚房排煙不通暢，直接影響油煙凈化器的使用。

The horizontal section of kitchen smoke exhaust pipe should not be too long. Generally, the maximum horizontal distance should not exceed 15m, and there should be a slope of more than 2%. Movable joints are set at the horizontal end to facilitate the cleaning of oil dirt. The exhaust speed shall not be lower than 10m / s according to the specification to prevent the oil from adhering to the flue due to low air speed. The branch pipe connected to the exhaust hood shall be equipped with air volume regulating valve. The unreasonable design and installation of kitchen smoke exhaust pipe often leads to poor smoke exhaust in the kitchen, which directly affects the use of oil fume purifier.

1、主排煙管道通風(fēng)面積不夠，氣體流速過(guò)大。根據(jù)工程經(jīng)驗(yàn)，排煙主管道內(nèi)風(fēng)速不能超過(guò)15m/s。否則在運(yùn)行一個(gè)時(shí)期以后(如一年以后)很容易造成排煙系統(tǒng)不通暢。在油煙凈化器的運(yùn)行實(shí)踐中，大部分案例都是因排煙管道通風(fēng)面積不足引起的不通暢，管道內(nèi)氣體的流速都在15m/s以上。

1. The ventilation area of the main smoke exhaust pipe is insufficient and the gas flow rate is too large. According to engineering experience, the wind speed in the main smoke exhaust pipe shall not exceed 15m / s. Otherwise, after a period of operation (such as one year), it is easy to cause the smoke exhaust system to be blocked. In the operation practice of oil fume purifier, most cases are blocked due to insufficient ventilation area of smoke exhaust pipe, and the flow rate of gas in the pipe is more than 15m / s.

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2、排煙管道由于要穿過(guò)建筑梁而使管道通風(fēng)截面積變小，截面上阻力增加，造成氣流不通暢。

2. As the smoke exhaust pipe passes through the building beam, the ventilation cross-sectional area of the pipe becomes smaller and the resistance on the cross-section increases, resulting in unobstructed air flow.

3、排煙管道在穿過(guò)建筑梁或躲避其它設(shè)備管道時(shí)，排煙管道中的一段會(huì)低于整體排煙管道平面。在使用一段時(shí)間后，由于油水混合物會(huì)積聚在較低的那段排煙管道中，直接影響排煙通暢。

3. When the smoke exhaust pipe passes through the building beam or avoids other equipment pipes, one section of the smoke exhaust pipe will be lower than the plane of the overall smoke exhaust pipe. After using for a period of time, the oil-water mixture will accumulate in the lower section of the smoke exhaust pipe, which will directly affect the smoothness of smoke exhaust.

4、不同樓層的廚房油煙通過(guò)同一主管道排出，離出口近的樓層廚房排煙效果較好，而較低樓層的廚房排煙不通暢。

4. The kitchen fume of different floors is discharged through the same main pipe. The kitchen smoke exhaust effect of the floor close to the exit is better, while the kitchen smoke exhaust of the lower floor is not unobstructed.

廚房排煙管道安裝、煤氣與天然氣管道的改造需要慎重。這兩種管道因受房屋結(jié)構(gòu)的限制，一般不讓隨意改動(dòng)。如果不得不改時(shí)，必須經(jīng)過(guò)物業(yè)公司的同意。改動(dòng)時(shí)，由于性較強(qiáng)，同時(shí)也方便日后的維修。

The installation of kitchen smoke exhaust pipeline and the transformation of gas and natural gas pipeline need to be careful. These two kinds of pipelines are generally not allowed to be changed at will due to the limitation of house structure. If it has to be changed, it must be approved by the property company. When changing, because of the strong professionalism, it is also convenient for future maintenance.

從建筑結(jié)構(gòu)設(shè)計(jì)來(lái)看，排煙管道工程由于有主、副煙道之分是不能隨意橫向改動(dòng)的，否則會(huì)影響排煙并有倒灌的可能， 而為了美觀將煙道口上下移動(dòng)則不會(huì)有不良影響。

From the perspective of building structure design, the smoke exhaust pipe project can not be changed horizontally due to the difference between main and auxiliary flue, otherwise it will affect the smoke exhaust and have the possibility of backflow, and moving the flue mouth up and down for beauty will not have adverse effects.