TWM592772U - Smoke amplifying device - Google Patents

Abstract

This creation is a smoke expansion device, which mainly includes a duct, which has a duct inside, and both ends of the duct have an intake end and an exhaust end that connect the duct respectively; and a blower is positioned on the duct In the pipeline, the blower is electrically connected to a control unit, and the rotation speed of the blower is controlled by the control unit, so that the speed of the blower is gradually increased, and the smoke generated by at least one smoke generator is driven, so that the amount of smoke output from the exhaust end gradually Increase in order to simulate the smoke state generated in the actual fire situation.

Description

Smoke expansion device

This creation is about a smoke expansion device, especially one that can increase the amount of smoke exhausted according to control.

As the necessity and popularity of the design of performance-based smoke control and refuge systems increase year by year, the development of on-site full-scale hot smoke tests in my country in recent decades has grown rapidly, and it has gradually integrated with the design and verification of international performance-based fire protection projects. Among them, my country's on-site full-scale hot smoke test before the completion of the building, its development history and evolution can be divided into three stages.

The first stage is the period of cold smoke testing with smoke bombs. The smoke system used in the test is black and red smoke bombs. Since there is no additional heating system, it can be regarded as the most basic cold smoke experiment. The second stage is the period of the hot smoke test with the gasoline pan as the heat source and smoke source. Because it uses smoke bombs as a source of smoke, it obviously lacks the thermal buoyancy that causes the smoke to rise; observing the flow of fire smoke flow will be obviously distorted, so there is a direct heating with a gasoline tray to generate synchronously Conception of required heat release rate and dense smoke generation. In short, if you want to conduct a 5MW hot smoke test, then use a gasoline tray that will produce a 5MW fire source size, then it will naturally also produce 5MW of heat smoke, thereby simultaneously showing the size of the 5MW fire source and the amount of smoke , To simulate a 5MW fire situation. The third stage is based on the Australian standard "AS 4391" smoke control system hot smoke test procedure specification, which uses industrial alcohol as the heating source, and uses environmentally friendly The oil particles are used as the hot smoke test period of white smoke. And the fire full scale hot smoke test CNS15937 smoke control system performance field test method-hot smoke test announced in October 105 in my country was also taken as the main axis.

However, when conducting the above hot smoke test, the amount of smoke generated by the smoke source is fixed, and the amount of smoke that rises with the hot gas is also proportional to the time. However, in actual fire situations, the amount of smoke rising is not the same as the amount of smoke produced by the experiment, therefore, the resulting test results will produce a large error. In view of this, in order to provide a structure that is different from the conventional technology and to improve the above-mentioned shortcomings, the creator has many years of experience and continuous research and development and improvement, and this has created the original creation.

One of the purposes of this creation is to provide a smoke expansion device that connects a blower to the duct of a duct, and the blower can increase the speed according to the control, so as to solve the problem caused by the actual experiment and the actual fire situation. The problem of different smoke output, and the increase in smoke output can be controlled after the speed of the blower is gradually increased, so that when the hot smoke test is conducted on site, the performance of the smoke control system can be faithfully presented, and the performance evaluation can be greatly improved Accuracy.

In order to achieve the purpose of the above-mentioned creation, the smoke expansion device set in this creation includes a wind pipe and a blower. Among them, there is a pipe inside the air pipe, and the two ends of the air pipe have an intake end and an exhaust end of the communication pipe respectively; and the blower is positioned in the duct of the wind pipe, and the blower is electrically connected to a control unit for control The speed of the blower is gradually increased to drive the smoke generated by at least one smoke generator, and the amount of smoke is gradually increased from the exhaust end to the output.

During implementation, at least one smoke generator is located on the side of the air intake end of the air duct, and the smoke generator has a smoke outlet for sending out smoke and entering through the air intake end of the air duct.

When implemented, this creation further includes a fire tray with fuel in it for combustion to generate upward flowing hot gas.

During implementation, the blower is frequency-converted, so that the speed of the blower gradually increases.

In practice, the square of the wind speed generated by the rotation of the blower is proportional to the time.

In practice, the air duct includes a horizontal section and a curved section. The intake end is located at one end of the horizontal section, the exhaust end is located at one end of the curved section, and the exhaust end has an upward opening.

In order to have a more in-depth understanding of this creation, I will elaborate on it later:

1‧‧‧Smoke expansion device

2‧‧‧Air duct

21‧‧‧Pipeline

22‧‧‧horizontal

221‧‧‧ Inlet

23‧‧‧Bending section

231‧‧‧ exhaust end

232‧‧‧ opening

3‧‧‧Blower

31‧‧‧Control unit

4‧‧‧Smoke generator

41‧‧‧ Outlet

5‧‧‧fire plate

Figure 1 is a perspective view of the air duct of the smoke expansion device.

Figure 2 is a cross-sectional view of a preferred embodiment of a smoke expansion device.

Figure 3 is a graph of the wind speed and time generated by the rotation of the blower of the smoke expansion device.

Fig. 4 is a schematic view of the use state of the preferred embodiment of the creation of a smoke expansion device.

This creative smoke expansion device mainly includes an air duct with a duct inside the duct, and a blower is installed in the duct. The blower is controlled by a control unit, so that the rotation speed of the blower can be gradually increased according to the setting, so as to drive at least one shot The smoke produced by the smoker allows the smoke to flow from the intake end of the air duct toward the exhaust end, and gradually increases the amount of smoke output from the exhaust end to simulate the status of the smoke generated in the actual fire situation.

Please refer to FIG. 1 and FIG. 2, which is a preferred embodiment of the creative smoke expansion device 1, which includes a wind pipe 2, a blower 3, at least one smoke generator 4, and a fire plate 5. Among them, the wind The tube 2 is a cylinder with a pipe 21 inside the cylinder. The air duct 2 includes a horizontal section 22 and a curved section 23 extending upwardly from one end of the horizontal section 22, the other end of the horizontal section 22 is an intake end 221, and the other end of the curved section 23 is an exhaust end 231 The exhaust end 231 has an upward opening 232, and the intake end 221 and the exhaust end 231 are located at both ends of the pipe 21 and communicate with the pipe 21, respectively.

The blower 3 is a suction-enhanced frequency conversion type. The blower 3 is connected and positioned in the duct 21 of the horizontal section 22 of the air duct 2, and the blower 3 is electrically connected to a control unit 31, thereby controlling the speed of the blower 3 to allow the blower 3 to rotate The speed is increasing. At least one smoke generator 4 is located on the side of the intake end 221 of the air duct 2, and at least one smoke generator 4 has at least one smoke outlet 41 for generating smoke. During implementation, each smoke generator 4 is fired at a pressure of 30 psi, 40 psi, 50 psi, 60 psi, 70 psi, or 80 psi to generate different amounts of smoke; the fire plate 5 has fuel in it, and the fire plate 5 is located in the row of the air duct 2 One side of the gas end 231 generates an upward hot air flow during combustion to drive the smoke upward.

Thus, as shown in Figs. 3 and 4, when at least one smoke generator 4 generates different amounts of smoke and is sent out from at least one smoke outlet 41, the rotation of the blower 3 generates suction power, so that the smoke can The intake end 221 of the air duct 2 enters; when the rotation speed of the blower 3 is gradually increased by the control of the control unit 31, the square of the wind speed generated by the rotation of the blower 3 is proportional to the time, so that at different times, The amount of smoke that increases at a multiple of square speed is output from the exhaust end 231 and flows upward to simulate the rise and concentration of smoke generated in an actual fire situation.

In summary, according to the content disclosed above, this creation can indeed achieve the intended purpose, providing a method that can faithfully present the smoke rise and concentration status during the hot smoke test, so as to greatly improve the accuracy of performance evaluation The smoke expansion device is of great industrial value, and a new patent application is filed in accordance with the law.

The above is the specific embodiment of this creation and the technical means used, the root According to the disclosure or teaching in this article, many changes and amendments can be derived and deduced. If the equivalent changes made according to the concept of this creation have not yet exceeded the essential spirit covered by the description and drawings, they should be regarded as In order to be within the technical scope of this creation, Chen Ming first.

1: Smoke expansion device

2: air duct

21: Pipeline

22: Horizontal section

221: Intake side

23: curved section

231: Exhaust end

232: opening

3: blower

4: Smoke generator

41: Smoke outlet

5: Fire plate

Claims (6)

A smoke expansion device, including: An air duct with a duct inside, and both ends of the duct have an intake end and an exhaust end communicating with the duct; and A blower is located in the duct of the air duct. The blower is electrically connected to a control unit for controlling the speed of the blower to increase gradually, thereby driving the smoke generated by at least one smoke generator to let the amount of smoke be discharged from the exhaust The end gradually increases the output outward. The smoke expansion device as described in item 1 of the patent application scope, wherein the at least one smoke generator is located on the side of the air inlet of the air duct, and the smoke generator has a smoke outlet for sending smoke and by The intake end of the air duct enters. The smoke expansion device as described in item 1 of the scope of the patent application further includes a fire tray with fuel in the fire tray for combustion to generate upward flowing hot gas. The smoke expansion device as described in item 1 of the patent application scope, wherein the blower is a frequency conversion type, so that the speed of the blower is gradually increased. The smoke expansion device according to any one of the items 1 to 4 of the patent application scope, wherein the square of the wind speed generated by the rotation of the blower is proportional to the time. The smoke expansion device according to item 5 of the patent application scope, wherein the air duct includes a horizontal section and a curved section, the intake end is located at one end of the horizontal section, and the exhaust end is located at one end of the curved section, And the exhaust end has an opening facing upward.

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