推薦新聞
聯(lián)系我們
來源：http://www.hbcax.com/ 日期：2026-04-20
暖通設(shè)計中防火與排煙的閥門種類繁雜，應(yīng)用場合不同時，閥門設(shè)置也不盡相同?？芍^：都是防火，閥閥不同；位置不同，功能有別；有問有答，為你解惑！
The types of fire and smoke exhaust valves in HVAC design are diverse, and the valve settings vary depending on the application scenarios. It can be said that they are all fireproof, but the valves are different; Different positions result in different functions; There are questions and answers to help you clarify your doubts!
從規(guī)范出發(fā)，GB15930-2007《建筑通風(fēng)和排煙系統(tǒng)用防火閥門》僅規(guī)定的三種閥門：防火閥（FHF），排煙防火閥（PFHF），排煙閥（PYF），當(dāng)然此標(biāo)準(zhǔn)的定義和符號分類標(biāo)記均為非強制性條文，也就是說，可以出現(xiàn)以上三種閥門之外的其他閥門類型?？匆?guī)范——術(shù)語和定義：下判術(shù)語和定義適用于本標(biāo)準(zhǔn)。防火閥fire damper安裝在通風(fēng)、空氣調(diào)節(jié)系統(tǒng)的送、回風(fēng)管道上,平時呈開啟狀態(tài),大災(zāi)時當(dāng)管道內(nèi)煙氣溫度達到70℃時關(guān)閉,并在一定時間內(nèi)能滿足漏煙量和耐火完整性要求,起隔煙阻大作用的閥門.防火閥一般由閥體,葉片、執(zhí)行機構(gòu)和溫感器等部件組成，排煙防火閥fire damper in smoke-venting system安裝在機械排煙系統(tǒng)的管道上,平時呈開啟狀態(tài),火災(zāi)時當(dāng)排煙管道內(nèi)煙氣溫度達到280℃時關(guān)閉,并在一定時間內(nèi)能滿足漏煙量和耐火完整性要求,起隔煙阻火作用的閥門。排煙防火閥一般由閥體、葉片,執(zhí)行機構(gòu)和溫感器等部件組成，緋煙閥smoke damper安裝在機械排煙系統(tǒng)各支管端部(煙氣吸入口)處,平時呈關(guān)閉狀態(tài)并滿足漏風(fēng)量要求,大災(zāi)或需要排煙時手動和電動打開,起排煙作用的閥門，帶有裝飾口或進行過裝飾處理的閥門稱為排煙口，排煙閥一般由閥體、葉片、執(zhí)行機構(gòu)等部件組成。
Starting from the standard, GB15930-2007 "Fire Valves for Building Ventilation and Smoke Exhaust Systems" only specifies three types of valves: fire dampers (FHF), smoke exhaust fire dampers (PFHF), and smoke exhaust dampers (PYF). Of course, the definition and symbol classification marks of this standard are non mandatory provisions, which means that other types of valves besides the above three types of valves can appear. Refer to the specifications - terms and definitions: It is determined that the terms and definitions are applicable to this standard. Fire dampers are installed on the supply and return air ducts of ventilation and air conditioning systems. They are usually in an open state and close when the temperature of the smoke in the ducts reaches 70 ℃ during a major disaster. They can meet the requirements of smoke leakage and fire resistance integrity within a certain period of time and play a role in smoke isolation and resistance Fire dampers are generally composed of valve bodies, blades, actuators, temperature sensors, and other components. Smoke exhaust fire dampers are installed on the pipes of mechanical smoke exhaust systems and are usually in an open state. When the smoke temperature in the smoke exhaust pipe reaches 280 ℃ during a fire, they close and can meet the requirements of smoke leakage and fire resistance integrity within a certain period of time, serving as a valve for smoke isolation and fire resistance. Smoke exhaust fire dampers are generally composed of valve bodies, blades, actuators, and temperature sensors. Smoke dampers are installed at the end of each branch pipe (smoke inlet) of mechanical smoke exhaust systems, and are usually in a closed state to meet the requirements of air leakage. In case of major disasters or when smoke exhaust is needed, they can be manually or electrically opened to function as smoke exhaust valves. Valves with decorative openings or those that have been decorated are called smoke exhaust outlets. Smoke exhaust valves are generally composed of valve bodies, blades, actuators, and other components.
從定義可以看出，防火閥（FHF）均為70℃常開，排煙防火閥均為280℃常開，排煙閥（這里相當(dāng)于排煙口）均為常閉。
From the definition, it can be seen that the fire dampers (FHF) are all normally open at 70 ℃, the smoke exhaust fire dampers are all normally open at 280 ℃, and the smoke exhaust dampers (equivalent to smoke outlets) are all normally closed.
問題1：是否存在70℃常閉的防火閥？
Question 1: Is there a fire damper that is normally closed at 70 ℃?
應(yīng)該存在DFHF（B70℃），即70℃常閉電控防火閥，平時常閉，可以電控開啟，手動、電動復(fù)位，70℃時熔斷關(guān)閉，應(yīng)用于平時不需要排風(fēng)的氣體消防房間（如做了空調(diào)的檔案庫）。
There should be DFHF (B70 ℃), which refers to a 70 ℃ normally closed electrically controlled fire damper. It is normally closed, can be electrically controlled to open, manually or electrically reset, and can be blown off at 70 ℃. It is used in gas fire rooms that do not require ventilation (such as archives with air conditioning).
問題2：是否存在280℃常閉的排煙防火閥？
Question 2: Is there a smoke exhaust fire damper that is normally closed at 280 ℃?
個人認(rèn)為不存在280℃常閉的排煙防火閥，從定義中可以看出，排煙防火閥主要是排煙實用，280℃熔斷關(guān)閉進行防火作用。既然排煙時需要使用，則做成常開的更可靠，可以避免常閉閥門在火災(zāi)發(fā)生時發(fā)生故障無法開啟的情況。
I personally believe that there is no smoke exhaust fire damper that is normally closed at 280 ℃. From the definition, it can be seen that smoke exhaust fire dampers are mainly used for smoke exhaust and have a fireproof effect by melting and closing at 280 ℃. Since it is necessary to use it for smoke exhaust, making it normally open is more reliable and can avoid situations where normally closed valves fail to open in the event of a fire.
如果是排風(fēng)兼排煙系統(tǒng)中平時不排風(fēng)，僅火災(zāi)時需要排煙的風(fēng)管，使用常閉的排煙閥/排煙口+常開280℃排煙防火閥即可。（如果排煙口自帶280攝氏度熔斷，可以不使用常開280℃PFHF？）
If it is a ventilation and smoke exhaust system that does not usually exhaust and only needs to exhaust smoke during a fire, a normally closed smoke exhaust valve/smoke outlet+a normally open 280 ℃ smoke exhaust fire damper can be used. If the exhaust outlet is equipped with a 280 ℃ fuse, can the normally open 280 ℃ PFHF be used instead? ）
有一種“自動排煙防火閥”，為平時常閉，發(fā)生火災(zāi)時開啟，這與排煙閥的動作相似，但是排煙閥一般不具有208攝氏度熔斷的防火功能，而自動排煙防火閥可以在280℃熔斷關(guān)閉。該閥應(yīng)設(shè)置在排煙系統(tǒng)的管道上或安裝在排煙風(fēng)機的吸入口處。
There is a type of "automatic smoke exhaust fire damper" that is normally closed and opens in the event of a fire, similar to the action of a smoke exhaust damper. However, smoke exhaust dampers generally do not have the fire prevention function of melting at 208 degrees Celsius, while automatic smoke exhaust fire dampers can melt and close at 280 degrees Celsius. The valve should be installed on the pipeline of the smoke exhaust system or at the suction inlet of the smoke exhaust fan.
這里的“自動排煙防火閥”可以用常閉的排煙閥/排煙口+常開280℃排煙防火閥替代，這時發(fā)生火災(zāi)排煙口開啟并連鎖風(fēng)機啟動即可。若安裝在風(fēng)機吸入口與排煙管道末端，發(fā)生火災(zāi)時需要連鎖開動全部的“自動排煙防火閥”，且需要連鎖啟動風(fēng)機，控制更為復(fù)雜，中間有一個開啟失敗則系統(tǒng)不能正常運行，可靠性不如常閉的排煙閥/排煙口+常開280℃排煙防火閥。
The 'automatic smoke exhaust fire damper' here can be replaced by a normally closed smoke exhaust valve/smoke exhaust outlet+a normally open 280 ℃ smoke exhaust fire damper. In the event of a fire, the smoke exhaust outlet will open and the fan will be interlocked to start. If installed at the suction port of the fan and the end of the smoke exhaust duct, in the event of a fire, all "automatic smoke exhaust fire dampers" need to be interlocked and the fan needs to be interlocked to start, making the control more complex. If one of them fails to open in the middle, the system cannot operate normally, and its reliability is not as good as that of normally closed smoke exhaust valves/smoke exhaust ports+normally open 280 ℃ smoke exhaust fire dampers.
問題3：排煙閥是否存在常開？
Question 3: Is the smoke exhaust valve normally open?
這里的排煙閥也就相當(dāng)于排煙口，對于常見的板式排煙口與多葉排煙口，市場上常見的均為常閉形式，一般不需要常開的排煙口。對于排風(fēng)兼排煙系統(tǒng)的排煙口，可以采用“單層百葉+280℃電控排煙防火閥”進行控制。
The smoke exhaust valve here is also equivalent to a smoke exhaust outlet. For common plate smoke exhaust outlets and multi blade smoke exhaust outlets, the commonly used ones in the market are normally closed and generally do not require normally open smoke exhaust outlets. For the smoke exhaust outlet of the exhaust and smoke exhaust system, a "single-layer louver+280 ℃ electrically controlled smoke exhaust fire damper" can be used for control.
問題4：70℃防火閥的應(yīng)用場合有哪些？
Question 4: What are the application scenarios of 70 ℃ fire dampers?
防火閥應(yīng)用場合很多，在空調(diào)送回風(fēng)干管，通風(fēng)風(fēng)機進出口，風(fēng)井入口，管道穿越防火分區(qū)/變形縫/重要房間/機房/火災(zāi)危險性大的房間的隔墻或樓板，垂直風(fēng)管與每層水平風(fēng)管連接處。等很多場合都需要設(shè)置防火閥。
Fire dampers are widely used in various applications, such as air conditioning return air ducts, ventilation fan inlets and outlets, air shaft inlets, pipelines passing through fire compartments/deformation joints/important rooms/machine rooms/walls or floors of rooms with high fire hazards, and vertical air ducts connecting to horizontal air ducts on each floor. Fire dampers need to be installed in many situations.
問題5：對于沒有空調(diào)機房的空調(diào)，如新風(fēng)換氣機，吸頂式空調(diào)器等，防火閥如何設(shè)置？
Question 5: How to set the fire damper for air conditioners without air conditioning rooms, such as fresh air ventilators, ceiling mounted air conditioners, etc?
此時，并不必須設(shè)置防火閥、在回風(fēng)管上設(shè)置防火閥、送回風(fēng)均設(shè)置防火閥。個人認(rèn)為如果發(fā)生火災(zāi)，可由消防控制室直接關(guān)停空調(diào)，不需要設(shè)置防火閥。如果沒有控制中心，可以在回風(fēng)管道上設(shè)置防火閥并連鎖空調(diào)主機，回風(fēng)溫度70℃時熔斷關(guān)閉并關(guān)閉空調(diào)主機。在送風(fēng)管道上設(shè)置防火閥起不到作用，因為風(fēng)先通過回風(fēng)管進入空調(diào)，在回風(fēng)管上設(shè)置防火閥就可以滿足要求。
At this point, it is not necessary to install fire dampers, install fire dampers on the return air duct, and install fire dampers on both the return and return air. In my opinion, if a fire occurs, the air conditioning can be directly shut down from the fire control room without the need for fire dampers. If there is no control center, a fire damper can be installed on the return air duct and the air conditioning unit can be interlocked. When the return air temperature reaches 70 ℃, the air conditioning unit will be blown off and turned off. Installing a fire damper on the air supply duct does not work because the air enters the air conditioner through the return duct first, and installing a fire damper on the return duct can meet the requirements.
問題6：送回風(fēng)主干管的防火閥是否要連鎖空調(diào)主機？
Question 6: Should the fire damper of the return air main pipe be interlocked with the air conditioning unit?
個人認(rèn)為需要連鎖空調(diào)主機（如果可以實現(xiàn)）。
I personally think it is necessary to chain air conditioning units (if possible).
問題7：空調(diào)新風(fēng)取風(fēng)管是否需要安裝防火閥？
Question 7: Does the air conditioning fresh air intake duct need to be equipped with a fire damper?
一般來說不需要。特別是如果回風(fēng)，送風(fēng)均安裝防火閥之后，新風(fēng)取風(fēng)口就沒有必要在安裝防火閥了。并且一般取風(fēng)口位于室外，且按照規(guī)范要求與排煙口保持10m以上的水平距離或3m以上的垂直距離（排煙口在上），一般煙氣不會從新風(fēng)口進入空調(diào)，所以一般不需要安裝防火閥。
Generally speaking, it is not necessary. Especially if fire dampers are installed for both return and supply air, there is no need to install fire dampers at the fresh air intake. And generally, the air intake is located outdoors and maintains a horizontal distance of at least 10 meters or a vertical distance of at least 3 meters from the exhaust outlet (with the exhaust outlet above) according to regulatory requirements. Generally, smoke will not enter the air conditioner from the new air intake, so it is not necessary to install a fire damper.
問題8：空調(diào)風(fēng)管連接到風(fēng)井時，如果沒有穿越防火分區(qū)，且風(fēng)井僅帶這一根風(fēng)管，可以不用安裝防火閥？
Question 8: When connecting the air conditioning duct to the air shaft, if it does not pass through the fire compartment and the air shaft only has this one duct, can a fire damper be installed?
空調(diào)風(fēng)管連接至風(fēng)井時，如果沒有穿越防火分區(qū)，且風(fēng)井帶有二根或二根以上的風(fēng)管（即多個系統(tǒng)公用風(fēng)井），需要在風(fēng)管連接風(fēng)井處安裝70℃常開防火閥，并且在防火閥后需設(shè)置止回閥。如果風(fēng)管穿越防火分區(qū)，則一定要加防火閥。
When the air conditioning duct is connected to the air shaft, if it does not pass through the fire compartment and the air shaft has two or more ducts (i.e. multiple system common air shafts), a 70 ℃ normally open fire damper needs to be installed at the connection of the duct to the air shaft, and a check valve needs to be installed after the fire damper. If the air duct passes through a fire compartment, a fire damper must be added.
問題9：防火閥設(shè)置在哪一側(cè)？
Question 9: On which side is the fire damper set?
防火閥應(yīng)該設(shè)置在與空氣流動方向相同的一側(cè)，即如果是送風(fēng)管，防火閥應(yīng)該設(shè)置在還未穿墻的一側(cè)。穿越變形縫兩側(cè)均應(yīng)該設(shè)置防火閥。如果需要安裝防火閥的一側(cè)沒有空間或者不便于安裝時可以根據(jù)施工要求改到另一側(cè)？
The fire damper should be set on the same side as the direction of air flow, that is, if it is a supply duct, the fire damper should be set on the side that has not yet penetrated the wall. Fire dampers should be installed on both sides of the deformation joint. If there is no space or it is inconvenient to install the fire damper on one side, can it be changed to the other side according to construction requirements?
問題10：如果風(fēng)機出口直接開百葉通往室外，則風(fēng)機出口側(cè)需要安裝防火閥？
Question 10: If the outlet of the fan is directly connected to the outside through louvers, then a fire damper needs to be installed on the outlet side of the fan?
對于風(fēng)機房內(nèi)的風(fēng)機，出口直接開百葉通往室外，此處風(fēng)機出口可以不設(shè)防火閥。如果安裝70℃常開防火閥且連鎖風(fēng)機當(dāng)然可以，但是此時若風(fēng)機房著火且燒穿風(fēng)管，此閥門才會作用，且風(fēng)機出口直接經(jīng)百葉通往室外，此閥門作用基本不大。如果風(fēng)機出口的管道需要穿越重要房間/易著火房間/防火分區(qū)等位置之后才通往室外，則在風(fēng)機房內(nèi)排風(fēng)風(fēng)機出口側(cè)也需要設(shè)置70℃防火閥。
For the fans in the fan room, the outlet is directly connected to the outside through louvers, and there is no need to install fire dampers at the fan outlet. If a 70 ℃ normally open fire damper is installed and the interlocking fan is installed, of course, it is possible. However, if the fan room catches fire and burns through the air duct, this valve will only work, and the fan outlet will directly lead to the outside through the louver, so this valve has little effect. If the pipeline at the outlet of the fan needs to pass through important rooms/flammable rooms/fire compartments before reaching the outside, a 70 ℃ fire damper should also be installed on the outlet side of the exhaust fan in the fan room.
問題11：該出口側(cè)閥門是否需要與風(fēng)機連鎖？
Question 11: Does the outlet side valve need to be interlocked with the fan?
正常來說，該閥門與風(fēng)機連鎖更為保險，也就是在風(fēng)機房發(fā)生火災(zāi)時，放置煙氣蔓延到其他區(qū)域，可以連鎖關(guān)停風(fēng)機。對于風(fēng)機房內(nèi)的送風(fēng)風(fēng)機：在風(fēng)機出口靠墻一側(cè)（200mm以內(nèi)）設(shè)置70℃常開防火閥，并連鎖風(fēng)機關(guān)閉。如果風(fēng)機入口直接通往室外百葉，則風(fēng)機入口不需要設(shè)置防火閥。如果風(fēng)機入口的管道需要穿越重要房間/易著火房間/防火分區(qū)等位置之后才通往室外，則在風(fēng)機房內(nèi)送風(fēng)風(fēng)機入口側(cè)也需要設(shè)置70℃防火閥，該閥門最好能連鎖風(fēng)機關(guān)閉（見問題10）。
Normally, the valve is more secure when interlocked with the fan, which means that in the event of a fire in the fan room, if smoke spreads to other areas, the fan can be interlocked and shut down. For the supply fans in the fan room: Install a 70 ℃ normally open fire damper on the side of the fan outlet near the wall (within 200mm), and interlock the fan to close. If the fan inlet leads directly to the outdoor louver, there is no need to install a fire damper at the fan inlet. If the pipeline at the inlet of the fan needs to pass through important rooms/fire prone rooms/fire zones before reaching the outside, a 70 ℃ fire damper should also be installed on the inlet side of the supply fan in the fan room. It is recommended that this valve can interlock the closure of the fan (see question 10).
問題12：風(fēng)機不在風(fēng)機房內(nèi)的情況下，風(fēng)機進出口的防火閥如何設(shè)置？
Question 12: How to set the fire damper at the inlet and outlet of the fan when the fan is not in the fan room?
與問題五類似，認(rèn)為需要在排風(fēng)機的入口/送風(fēng)機的出口設(shè)置70℃常開防火閥且連鎖風(fēng)機關(guān)閉即可，不需要兩端都設(shè)。
Similar to question five, it is believed that a 70 ℃ normally open fire damper should be installed at the inlet of the exhaust fan/outlet of the supply fan, and the interlocking fan should be closed, without the need for both ends.
問題13：風(fēng)機房內(nèi)排煙兼排風(fēng)風(fēng)機的出口如果直接開百葉通往室外，可不設(shè)置閥門？
Question 13: If the outlet of the smoke exhaust and exhaust fan in the fan room is directly opened with louvers to the outside, can a valve be omitted?
風(fēng)機房內(nèi)排煙兼排風(fēng)風(fēng)機的出口如果穿墻/其他房間，然后通往室外，需要在出口側(cè)靠墻處設(shè)置280℃常開排煙防火閥并連鎖風(fēng)機關(guān)閉。
If the outlet of the smoke exhaust and exhaust fan in the fan room passes through a wall/other room and leads to the outside, a 280 ℃ normally open smoke exhaust fire damper needs to be installed near the wall on the outlet side and the fan needs to be interlocked to close.
如果沒有風(fēng)機房，排煙風(fēng)機出口可以不設(shè)排煙防火閥（入口要安裝280℃常開排煙防火閥且連鎖風(fēng)機關(guān)閉）。
If there is no fan room, the exhaust fan outlet does not need to be equipped with an exhaust fire damper (the inlet should be equipped with a 280 ℃ normally open exhaust fire damper and the interlocking fan should be closed).
如果風(fēng)機出口通往風(fēng)井，且該風(fēng)井僅僅帶此一個系統(tǒng)，可以不設(shè)排煙防火閥。（如果穿越了防火分區(qū)，一定要設(shè)排煙防火閥）
If the fan outlet leads to the air shaft and the air shaft only has this one system, smoke exhaust fire dampers can be omitted. If passing through a fire compartment, it is necessary to install smoke exhaust fire dampers
如果風(fēng)機出口通往風(fēng)井，該風(fēng)井帶2個或2個以上的系統(tǒng)，則每個系統(tǒng)風(fēng)機出口靠風(fēng)井處（200mm以內(nèi)）設(shè)280℃常開排煙防火閥且連鎖風(fēng)機關(guān)閉，且后面設(shè)止回閥。
If the fan outlet leads to the air shaft with 2 or more systems, a 280 ℃ normally open smoke exhaust fire damper shall be installed at the fan outlet of each system (within 200mm) near the air shaft, and the interlocking fan shall be closed, with a check valve installed at the back.
本文由 川消 友情奉獻.更多有關(guān)的知識請點擊 http://www.hbcax.com/ 真誠的態(tài)度.為您提供為全面的服務(wù).更多有關(guān)的知識我們將會陸續(xù)向大家奉獻.敬請期待.
This article is dedicated by Chuanxiao Friendship For more related knowledge, please click http://www.hbcax.com/ Sincere attitude To provide you with comprehensive services We will gradually contribute more relevant knowledge to everyone Coming soon.
