In the past, the kitchen fire extinguishing system was the fire extinguishing protection system of the pointer to the kitchen building itself, the most common smoke sense, temperature sense detection system and water sprinkler system. Because kitchen fires are mostly caused by the out-of-control of stove fire, igniting the grease scale in the hood of collecting oil and the smoke exhaust pipe causes the all-day fire which is difficult to extinguish. Therefore, the kitchen hot kitchen processing equipment "kitchen table, oil collecting hood, smoke exhaust pipe" has become the key protection object in the kitchen; and the system for kitchen hot kitchen processing equipment to achieve "local key fire protection" is called "kitchen equipment automatic fire extinguishing device", which is different from the kitchen fire extinguishing system, two independent and non-interference fire extinguishing protection systems.

为什么要设置具有烟道灭火功能的厨房设备自动灭火装置？

Why set up kitchen equipment automatic fire extinguishing device with smoke extinguishing function?

由于厨房火灾通常是高闪点（315-450度）的食用油，其火灾特点为：火势扩大速度快，热容量大，烟道火灾隐蔽性强扑救困难；因而快速扑灭火火焰是扑救厨房火灾的难点之一，抑制复燃是扑救厨房火灾的难点之二，遏制烟道火灾的蔓延是扑救厨房火灾的难点之三。

Because kitchen fires are usually high flash point (315-450 degrees) cooking oil, their fire characteristics are: rapid expansion of fire, large heat capacity, strong smoke fire concealment difficulty to extinguish; therefore, rapid extinguishing of fire is one of the difficulties to extinguish kitchen fires, restraining re-ignition is the second difficulty to extinguish kitchen fires, curbing the spread of smoke fire is the third difficulty to extinguish kitchen fires.

厨房设备自动灭火装置适用于何种场所？

Where is the automatic fire extinguishing device suitable for kitchen equipment?

适用于宾馆、饭店、餐馆、机关、学校、企事业单位等公共建筑内的厨房条件符合以下标准：

The kitchen conditions suitable for public buildings such as hotels, restaurants, government offices, schools, enterprises and institutions meet the following standards:

①设在地下建筑内的厨房；②建筑面积≥500m2的超市内或与之毗邻的厨房；③高层建筑内，餐厅面积≥100m2的厨房；④单、多层建筑内，餐厅面积≥200m2的厨房。

(1) Kitchens in underground buildings; (2) Kitchens in supermarkets or adjacent kitchens with an area of more than 500 m2; (3) Kitchens with a restaurant area of more than 100 m2 in high-rise buildings; (4) Kitchens with a restaurant area of more than 200 m2 in single and multi-storey buildings.

为什么厨房设备自动灭火装置宜采用药剂和水共同作用灭火？其灭火机理是什么？

Why should kitchen equipment automatic fire extinguishing devices use agents and water together to extinguish fire? What is the fire extinguishing mechanism?

因为厨房是人们食品加工的重要场所，为了不对食品产生污染，避免造成人体危害，则要求灭火剂应采用无毒、无污染、无腐蚀的专用灭火剂；灭火剂应先将油锅、烟罩或烟道的明火灭掉，再用细水雾来吸收热能，防止复燃，达到迅速灭火的目的。如果只用水也可以灭火，但灭火时间会长很多，而且还会扩大燃烧范围（燃烧的热油遇水后会迸溅到周围），还有可能造成人身伤害。

Because kitchen is an important place for people's food processing, in order not to pollute food and avoid causing harm to human body, fire extinguishing agent should be non-toxic, non-polluting and non-corrosive special fire extinguishing agent; fire extinguishing agent should first extinguish the open fire of oil pan, smoke hood or flue, and then use water mist to absorb heat energy, prevent re-ignition, so as to achieve the purpose of rapid fire extinguishing. If only water can be used to extinguish the fire, but the extinguishing time will be much longer, and it will expand the burning range (hot oil will splash around when it meets water), and may cause personal injury.

厨房设备自动灭火装置的保护区是如何定义和划分的？

How to define and divide the protected areas of automatic fire extinguishing devices for kitchen equipment?

厨房设备自动灭火装置的保护区是指一组热厨加工设备及所对应长度的油烟罩和排烟进口至烟道防火阀处共同组成的被保护区域。一组热厨加工设备可以用一套厨房设备自动灭火装置保护，一套不足时可由多套厨房设备自动灭火装置纵向分区保护。

The protection area of automatic fire extinguishing device for kitchen equipment refers to the protected area composed of a group of hot kitchen processing equipment, the corresponding length of the hood and the smoke exhaust inlet to the flue fire valve. A group of hot kitchen processing equipment can be protected by an automatic fire extinguishing device of kitchen equipment, and a set of inadequate equipment can be protected by vertical zoning of multiple automatic fire extinguishing devices of kitchen equipment.

厨房设备自动灭火装置的灭火原理是：

The fire extinguishing principle of automatic fire extinguishing device for kitchen equipment is as follows:

①厨房灶台油锅燃烧后，火焰发出的巨大热量使感温易熔金属拉索释放器脱离开来；

(1) After the kitchen stove oil pan burns, the huge heat emitted by the flame makes the temperature-sensitive fusible metal cable releaser detached;

②感温探测系统将厨房灭火系统的释放装置打开，向灭火剂贮存容器加压，并同时动作所有辅助启动或电动的切断装置、及报警联动装置；

(2) The temperature sensing system opens the release device of the kitchen fire extinguishing system, pressurizes the fire extinguishing agent storage container, and simultaneously operates all auxiliary start-up or electric cut-off devices and alarm linkage devices;

③液体灭火剂通过喷嘴，喷洒在厨房灶台设备表面以及排烟罩、滤油网和排烟管道内部，这种专用灭火剂能够迅速扑灭油锅内的火焰，并形成抑制油料蒸汽燃烧的覆盖层，防止油料复燃；④当系统药剂喷完大约3-5秒后，系统上的阀门自动将喷水阀打开，水流通过灭火药剂管道和喷嘴喷洒，迅速冷却和冲刷油料及灶台设备表面。

(3) The liquid fire extinguishing agent sprays through the nozzle on the kitchen stove equipment surface and inside the exhaust hood, oil filter screen and smoke exhaust pipe. This special fire extinguishing agent can quickly extinguish the flame in the oil pan, and form a covering layer to inhibit the combustion of oil vapor to prevent oil reburning; (4) When the system agent is sprayed for about 3-5 seconds, the valve on the system automatically opens the spray valve, and water flows through the extinguishing. Powder pipes and nozzles are sprayed to quickly cool and wash the oil and the surface of stove equipment.