Automatic fire prevention, extinguishment and smoke blocking device for catering smoke exhaust pipeline on roof

Abstract

The utility model relates to the field of fire-fighting devices, in particular to an automatic fire-preventing, fire-extinguishing and smoke-blocking device for a catering smoke exhaust pipeline on a roof. The smoke exhaust system comprises a smoke exhaust pipeline, a temperature sensing probe, a spraying unit, an electric fireproof valve, an oil smoke purifier, a smoke exhaust fan and a signal processing control box, the spraying unit comprises a spraying pipe and spraying heads, the spraying pipe extends into a pipeline shaft from the middle front section of the smoke exhaust pipeline, and the spraying heads are evenly distributed on the spraying pipe. And the two electric fire resisting dampers are arranged on the two sides of the oil fume purifier correspondingly. The flue has the effects of alarming, fire prevention, smoke resistance, fire extinguishment and the like, the safety of kitchen operation, the safety of public buildings and the like is improved, the problem of safety complexity caused by the fact that a plurality of kitchens share one flue on the roof of a large public building is solved, and therefore the flue has a large market space.

Description

Technical Field

[0001] The utility model relates to the field of fire-fighting devices, and particularly relates to an automatic fire prevention, fire extinguishing and smoke blocking device for a catering smoke exhaust pipe on the roof of a building. Background Art

[0002] The catering industry is an industry that is extremely prone to fire. Due to improper use of fire, fire accidents caused by the ignition of the smoke exhaust pipe by the stove fire and even the entire smoke exhaust system occur frequently. In severe cases, serious consequences such as heavy losses of property and personnel are caused.

[0003] For large public buildings, there are multiple restaurants in the building. Therefore, the situation of multiple catering establishments sharing a single smoke exhaust pipe often occurs. In addition, the smoke exhaust pipe is generally installed on the roof of the building. Since the smoke exhaust pipe is far from the starting point of the fire, it causes certain difficulties in fire extinguishing judgment and delays the fire extinguishing time. To prevent accidents on the roof of the building, there are usually special locks on the access doors, which also delays the fire extinguishing time. It is usually difficult to obtain water on the roof of the building, so there is an actual difficulty that although there is a fire, it cannot be extinguished.

[0004] Although the prior art such as CN204106894U discloses an automatic fire prevention and fire extinguishing device for a smoke exhaust pipe, its spray unit is only arranged in the spray box, and the effect of spray cooling is poor, which is not suitable for the fire extinguishing situation when multiple catering establishments share a single smoke exhaust pipe. In addition, the smoke blocking effect of the above device is poor, and it is difficult to effectively block smoke. Summary of the Invention

[0005] The purpose of the utility model is to overcome the above problems and provide an automatic fire prevention, fire extinguishing and smoke blocking device for a catering smoke exhaust pipe on the roof of a building. To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An automatic fire prevention, fire extinguishing and smoke blocking device for a catering smoke exhaust pipe on the roof of a building, comprising a smoke exhaust pipe, the smoke exhaust pipe is communicated with the smoke exhaust systems of multiple kitchens through a pipe shaft, a temperature induction probe, a spray unit, an electric fire damper, an oil fume purifier, a smoke exhaust fan and a signal processing control box are arranged in the smoke exhaust pipe, the smoke exhaust fan is arranged at the end of the smoke exhaust pipe, the smoke exhaust fan provides negative pressure to suck and discharge the smoke from the pipe shaft, the spray unit comprises a spray pipe and spray heads, the spray pipe extends from the middle and front section of the smoke exhaust pipe into the pipe shaft, and the spray heads are uniformly distributed on the spray pipe;

[0007] The oil fume purifier is arranged in the middle section of the smoke exhaust pipe, the number of the electric fire dampers is two, and they are respectively arranged on both sides of the oil fume purifier; the temperature induction probe is arranged in the pipe shaft;

[0008] The signal processing control box obtains temperature information from the temperature induction probe and controls the working states of the spray unit, the electric fire damper and the exhaust fan.

[0009] As an improvement, the number of the temperature sensing probes is three, which are respectively located at different positions in the pipe shaft.

[0010] As an improvement, the spraying unit further includes a water tank, a water pump is arranged in the water tank, the water pump is communicated with the spraying pipe through a water supply pipe, and the water pump is electrically connected with the signal processing control box.

[0011] As an improvement, the top end of the pipe shaft is sealed and is only communicated with the external atmosphere through a smoke exhaust pipe.

[0012] The advantages of the utility model are as follows:

[0013] 1. The utility model has multiple functions such as alarming, fire prevention and smoke resistance, fire extinguishing, etc., improves the safety of kitchen operation, the safety of public buildings, etc., and also solves the safety complexity problem of multiple kitchens on the roof of large public buildings sharing a common flue, so it has a large market space.

[0014] 2. The utility model can spray and cool the front end of the smoke exhaust pipe and the pipe shaft, effectively improving the fire prevention and fire extinguishing effects of the smoke exhaust pipe and the pipe shaft, and making it more suitable for the situation of multiple kitchens on the roof of large public buildings sharing a common flue. Description of the Drawings

[0015] 3. Electric fire dampers are arranged at both ends of the oil fume purifier of the utility model, which can effectively improve the fire prevention and smoke resistance effects.

[0016] Figure 1 It is a structural diagram of an automatic fire prevention, fire extinguishing and smoke resistance device for a catering smoke exhaust pipe on the roof of a building in Embodiment 1.

[0017] The labels in the figure are:

[0018] 1 - smoke exhaust pipe, 2 - pipe shaft, 3 - temperature sensing probe, 4 - spraying unit, 41 - spraying pipe, 42 - spraying head, 43 - water tank, 44 - water pump, 45 - water supply pipe, 5 - electric fire damper, 6 - oil fume purifier, 7 - smoke exhaust fan, 8 - signal processing box, 81 - wireless transmitting component. Detailed Embodiment

[0019] The following provides a detailed and specific introduction to the utility model through specific embodiments to better understand the utility model, but the following embodiments do not limit the protection scope of the utility model. Embodiment

[0020] This embodiment discloses an automatic fire prevention, fire extinguishing and smoke resistance device for a catering smoke exhaust pipe on the roof of a building.

[0021] As Figure 1As shown in the figure, this embodiment includes a smoke exhaust duct 1, and the smoke exhaust duct 1 is connected to the smoke exhaust systems of multiple kitchens through a pipe shaft 2. The top of the pipe shaft 2 is sealed and is only connected to the external atmosphere through the smoke exhaust duct 1.

[0022] A temperature induction probe 3, a spray unit 4, an electric fire damper 5, an oil fume purifier 6, a smoke exhaust fan 7, and a signal processing control box 8 are provided in the smoke exhaust duct 1. The smoke exhaust fan 7 is arranged at the end of the smoke exhaust duct 1, and the smoke exhaust fan 7 provides negative pressure to suck and discharge the smoke from the pipe shaft 2. The spray unit 4 includes a spray pipe 41 and spray nozzles 42. The spray pipe 41 extends from the middle and front section of the smoke exhaust duct 1 into the pipe shaft 2, and the spray nozzles 42 are evenly distributed on the spray pipe 41.

[0023] The spray unit 4 further includes a water tank 43. A water pump 44 is provided in the water tank 43. The water pump 44 is connected to the spray pipe 41 through a water supply pipe 45, and the water pump 44 is electrically connected to the signal processing control box 8.

[0024] The oil fume purifier 6 is arranged in the middle section of the smoke exhaust duct 1. The number of electric fire dampers 5 is two, and they are respectively arranged on both sides of the oil fume purifier 6. The number of temperature induction probes 3 is three, and they are respectively located at different positions in the pipe shaft 2.

[0025] The signal processing control box 8 obtains temperature information from the temperature induction probe 3 and controls the working states of the water pump 44, the electric fire damper 5, and the exhaust fan 7. A buzzer and a wireless transmission component 81 are provided in the signal processing control box 8.

[0026] In this embodiment, the temperature induction probe 3 discovers the abnormal temperature in the smoke exhaust duct 1 and the pipe shaft 2 in the first time and sends it to the signal processing control box 8. The signal processing control box 8 will send out a buzzer alarm in the first time and the wireless transmission component 81 sends out an alarm message to the central control room or relevant personnel; at the same time, the signal processing control box 8 automatically cuts off the power supply of the smoke exhaust fan 7, automatically closes the two additional electric fire dampers 5, and automatically starts the water pump 44 to spray and cool down and extinguish the fire in the smoke exhaust duct 1 and the pipe shaft 2.

[0027] Since these actions are carried out simultaneously, the safety problem of the last 10 meters of the entire smoke exhaust system is solved. The actions of perception, fire blocking, smoke blocking, and fire extinguishing are completed in one go, which is coherent and compact, and the effect of fire prevention, smoke blocking, and fire extinguishing in the first time is achieved.

[0028] The shape, size, installation position, etc. of the present utility model can be appropriately adjusted according to the specific conditions of the rooftop and roof surface. Considering the huge temperature difference between the south and the north and the anti-freezing factor, thermal insulation will be taken into account during actual installation. Considering the problem of multiple kitchens sharing a single smoke exhaust pipe, electromagnetic water spray control valves, multi-channel fan control controllers, etc. will be separately installed during actual installation to adapt to different installation environments, but the overall internal structure and working principle of the entire system remain unchanged.

[0029] The specific embodiments of the present utility model have been described in detail above, but they are only examples, and the present utility model is not equivalent to the specific embodiments described above. For those skilled in the art, any equivalent modifications and substitutions made to the present utility model are also within the scope of the present utility model. Therefore, all equivalent transformations and modifications made without departing from the spirit and scope of the present utility model should be covered within the scope of the present utility model.

Claims

1. An automatic fire extinguishing and smoke blocking device for a catering smoke exhaust pipe on the roof of a building, comprising a smoke exhaust pipe, the smoke exhaust pipe is communicated with the smoke exhaust systems of multiple kitchens through a pipe shaft, a temperature induction probe, a spray unit, an electric fire damper, an oil fume purifier, a smoke exhaust fan and a signal processing control box are arranged in the smoke exhaust pipe, the smoke exhaust fan is arranged at the end of the smoke exhaust pipe, and the smoke exhaust fan provides negative pressure to suck and discharge the flue gas from the pipe shaft, characterized in that, The spray unit includes a spray pipe and spray nozzles. The spray pipe extends from the middle and front section of the smoke exhaust pipe into the pipe shaft, and the spray nozzles are evenly distributed on the spray pipe. The oil fume purifier is arranged in the middle section of the smoke exhaust pipe. The number of the electric fire dampers is two, and they are respectively arranged on both sides of the oil fume purifier. The temperature induction probe is arranged in the pipe shaft. The signal processing and control box obtains temperature information from the temperature induction probe and controls the working states of the spray unit, the electric fire damper and the exhaust fan.

2. An automated fire prevention, fire extinguishing and smoke blocking device for a rooftop catering smoke exhaust pipe according to claim 1, characterized in that, The number of the temperature induction probes is three, which are respectively located at different positions in the pipe shaft.

3. An automatic fire extinguishing and smoke blocking device for a catering smoke exhaust pipe on the roof of a building according to claim 1, characterized in that, The spray unit further includes a water tank. A water pump is arranged in the water tank. The water pump is connected with the spray pipe through a water supply pipe, and the water pump is electrically connected with the signal processing and control box.

4. An automatic fire extinguishing and smoke blocking device for a catering smoke exhaust pipe on the roof of a building according to claim 1, characterized in that The top of the pipe shaft is sealed and only communicates with the external atmosphere through the smoke exhaust pipe.

5. An automatic fire extinguishing and smoke blocking device for a catering smoke exhaust pipe on the roof of a building according to claim 1, characterized in that, A buzzer and a wireless transmission component are arranged in the signal processing and control box.

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