Temperature and smoke exhaust ventilation system

Abstract

The invention belongs to the field of fire fighting, and particularly relates to a temperature and smoke exhaust ventilation system which comprises a box body, an air inlet box, a box door, a circulating water pump and a circulating water pipe. A top cavity is formed in the top of the box body, a first exhaust fan is arranged on a ceiling of the box body, a second exhaust fan is arranged at the top of the top cavity, and an air inlet fan is arranged at the lower end of the box body; the air inlet box is provided with a first cavity and a second cavity; the box door is hinged to the air inlet box, rotates around a hinge shaft and can be switched back and forth between blocking of the first air inlet and blocking of the second air inlet; the circulating water pump drives water in the circulating water pipe to circulate; and the other part of the circulating water pipe extends into the first cavity, so that gas entering from the first gas inlet enters the second cavity after passing through the circulating water pipe. Heat of smoke is fully utilized to heat air at the inlet, then hot air is utilized to disperse the smoke, and equipment damage caused by direct introduction of cold air for heat removal is avoided. Air inlet switching of cold air and hot air is achieved only through one air inlet fan, and the structure is ingenious.

Description

Technical Field

[0001] The present invention belongs to the field of fire protection, and particularly relates to an exhaust temperature, exhaust smoke and ventilation system. Background Art

[0002] In order to improve the effect of fire protection training, it is often necessary to build a fire drill scenario. In order to facilitate the reuse and movement of the fire drill scenario, the designer thought of building a container-type drill scenario. However, due to the closed structure of the container, after the drill is over, the smoke inside is not easy to discharge. Moreover, the container is made of metal, and some may also have a good heat insulation effect. It is extremely difficult to dissipate the internal heat. If cold air is directly injected to discharge the heat, it is easy to cause some equipment and structures inside the container to generate thermal stress due to sudden temperature changes, which may affect the performance and service life of the equipment in the long run, and even damage the structure of the container. Summary of the Invention

[0003] An exhaust temperature, exhaust smoke and ventilation system provided by the present invention can effectively solve the problems in the background art.

[0004] An exhaust temperature, exhaust smoke and ventilation system provided by the present invention includes a box body, an air inlet box, a box door, a circulating water pump and a circulating water pipe;

[0005] The top of the box body is provided with a top cavity, the ceiling of the box body is provided with a first exhaust fan, the top of the top cavity is provided with a second exhaust fan, and the lower end of the box body is provided with an intake fan;

[0006] The air inlet box is arranged on the outer side wall of the box body, and the air inlet box is provided with a first cavity and a second cavity; the first cavity and the second cavity are communicated, and the first cavity is provided with a first air inlet communicating with the outside; the second cavity is provided with a second air inlet communicating with the outside, and the second cavity is also communicated with the intake fan;

[0007] The box door is hinged on the air inlet box, and the box door can rotate around the hinge axis to switch back and forth between blocking the first air inlet and the second air inlet;

[0008] The circulating water pump is arranged on the outer side wall of the box body, and the circulating water pump drives the water in the circulating water pipe to circulate; a part of the circulating water pipe is laid flat in the top cavity, and another part of the circulating water pipe extends into the first cavity and enables the gas entering from the first air inlet to enter the second cavity after passing through the circulating water pipe.

[0009] As a further optimization of the present invention, the side wall of the cavity is provided with an opening; a U-shaped pipe joint is arranged on the circulating water pipe near the opening, and a rotary joint is arranged in the middle of the U-shaped pipe joint; two box bodies can be spliced with the circulating water pipe through the rotary joint.

[0010] As a further optimization of the present invention, the air inlet box has upper and lower layers, the first cavity is arranged on the upper layer, and the second cavity is arranged on the lower layer.

[0011] As a further optimization of the present invention, the air inlet box is detachably connected to the box body.

[0012] As a further optimization of the present invention, the box door is an automatic door driven by a motor.

[0013] As a further optimization of the present invention, it further includes a smoke sensor, a temperature sensor and a control module; the smoke sensor and the temperature sensor are arranged on the inner wall of the box body; the first row of fans, the second row of fans, the intake fan, the smoke sensor, the temperature sensor, and the circulation water pump are all connected to the control module.

[0014] As a further optimization of the present invention, it further includes a usage method, which includes the following steps:

[0015] S1: Start the control module, and the control module controls the box door to block the second air inlet and turn on the intake fan, the first row of fans, the second row of fans and the circulation water pump;

[0016] S2: When the smoke sensor detects that the smoke in the box body is exhausted, control the box door to block the first air inlet and control the circulation water pump to stop working;

[0017] S3: When the temperature sensor detects that the temperature in the box body reaches the set value, the control module controls the intake fan, the first row of fans and the second row of fans to stop working.

[0018] The exhaust temperature and smoke ventilation system provided by the present invention makes full use of the heat of the smoke to heat the incoming air, and then uses the hot air to disperse the smoke, avoiding damage to the equipment caused by directly introducing cold air for heat exhaust. As the smoke is exhausted, the temperature of the hot air will gradually decrease. After the smoke is exhausted, the heat of the box body also drops to a suitable range, and then cold air is introduced to make the temperature in the box body reach the natural temperature. The present invention realizes the intake switching between cold air and hot air with only one intake fan, and the structure is ingenious. Description of the Drawings

[0019] Figure 1 is the structural schematic diagram of Embodiment 1;

[0020] Figure 2 is the structural schematic diagram of Embodiment 2;

[0021] Among them, the box body 1, the top cavity 1a, the first row of fans 1b, the second row of fans 1c, the intake fan 1d, the air inlet box 2, the first cavity 2a, the second cavity 2b, the first air inlet 2c, the second air inlet 2b, the box door 3, the circulation water pump 4, the circulation water pipe 5. Detailed Embodiments

[0022] Embodiment 1

[0023] As Figure 1 shown,

[0024] This embodiment includes a box body 1, an air inlet box 2, a box door 3, a circulating water pump 4 and a circulating water pipe 5.

[0025] The box body 1 is a container made of iron sheet. There is a top cavity 1a at the top of the box body 1. There is a first row of fans 1b on the ceiling of the box body 1, and a second row of fans 1c at the top of the top cavity 1a. The first row of fans 1b and the second row of fans 1c are used to exhaust the gas in the box body 1. There is an intake fan 1d at the lower end of the box body 1, and the intake fan 1d is used to blow external gas into the box body 1.

[0026] The air inlet box 2 is arranged on the outer side wall of the box body 1. In this embodiment, the air inlet box 2 is welded to the outer side wall of the box body 1. In other embodiments, the air inlet box 2 and the box body 1 can also be made into a detachable structure, such as snap connection, bolt connection, etc.

[0027] In this embodiment, the air inlet box 2 is provided with a first cavity 2a in the upper layer and a second cavity 2b in the lower layer. The first cavity 2a and the second cavity 2b are connected. The first cavity 2a is also provided with a first air inlet 2c communicating with the outside. The second cavity 2b is provided with a second air inlet 2b communicating with the outside, and the second cavity 2b is also connected to the intake fan 1d. In this structure, whether the gas entering from the first air inlet 2c or the gas entering from the second air inlet 2b can enter the box body 1 through the intake fan 1d. In other embodiments, the first cavity 2a and the second cavity 2b can also be arranged in a left-right structure or a diagonal structure, depending on the specific situation.

[0028] In this embodiment, the box door 3 is hinged to the air inlet box 2. The box door 3 is an automatic door driven by a motor. The box door 3 can rotate back and forth around the hinge axis to switch back and forth between blocking the first air inlet 2c and the second air inlet 2b. In other embodiments, the box door 3 can also be manually switched.

[0029] In this embodiment, the circulating water pump 4 is fixed on the outer side wall of the box body 1, and the circulating water pump 4 drives the water circulation in the circulating water pipe 5. A part of the circulating water pipe 5 is laid flat in the top cavity 1a, and the water pipe in this part adopts a serpentine structure with back-and-forth bends. On the premise of not hindering the smoke from passing through the top cavity 1a, it occupies the top cavity 1a as much as possible.

[0030] Similarly, another part of the circulating water pipe 5 extends into the first cavity 2a and enables the gas entering from the first air inlet 2c to enter the second cavity 2b after passing through the circulating water pipe 5. Its structure also adopts a serpentine structure with back-and-forth bends. On the premise of not hindering the gas from entering the second cavity 2b from the first air inlet 2c, it occupies the first cavity 2a as much as possible.

[0031] It also includes a smoke sensor, a temperature sensor and a control module.

[0032] The smoke sensor is installed at the upper end of the box body 1. The smoke sensor can be a photoelectric smoke sensor, which judges the smoke concentration by detecting the light-shielding effect of the smoke. It can also be an ionization smoke sensor or a gas-sensitive smoke sensor. When the concentration reaches the set value, it sends a signal to the control module.

[0033] The temperature sensor is installed on the inner wall of the box body 1 near the equipment. The temperature sensor detects the temperature inside the box body 1. When the temperature reaches the set value, it sends a signal to the control module.

[0034] The first row of fans 1b, the second row of fans 1c, the intake fan 1d and the circulation water pump 4 are all connected to the control module.

[0035] This embodiment also provides a usage method, including the following steps:

[0036] S1: When the fire drill is over, the fire inside the box body 1 is extinguished, the smoke has not spread yet, and after the personnel have evacuated, the control module is started. The control module controls the box door 3 to block the second air inlet 2b and turns on the intake fan 1d, the first row of fans 1b, the second row of fans 1c and the circulation water pump 4.

[0037] The circulation water pump 4 controls the water in the circulation water pipe 5 to circulate. The first row of fans 1b blows the smoke inside the box body 1 into the top cavity 1a. The circulation water pipe 5 in the top cavity 1a absorbs the heat of the smoke, making the water in the circulation water pipe 5 become hot. Then the smoke is exhausted from the top cavity 1a by the second row of fans 1c to the outside.

[0038] The water in the circulation water pipe 5 is also circulated in the first cavity 2a. Under the action of the intake fan 1d, the outside cold air enters the first cavity 2a from the first air inlet 2c. After passing through the circulation water pipe 5 in the first cavity 2a, the air is heated and enters the bottom of the box body 1. During the process of flowing upward from the bottom, it further takes away the smoke until the smoke is exhausted.

[0039] Since after the fire is extinguished, the main heat carrier is these smokes. When the smoke is slowly exhausted, the heat of the circulation water pipe 5 will also become lower and lower. Then the temperature of the air entering the bottom of the box body 1 will gradually decrease.

[0040] The advantage of this is that when exhausting the smoke, cold air is not directly blown into the box body 1, but the incoming air is heated by the heat of the smoke itself, avoiding damage to the equipment due to sudden cold air causing sudden temperature change of the equipment and generating thermal stress.

[0041] S2: When the smoke sensor detects that the smoke inside the box body 1 is exhausted, the control module controls the box door 3 to block the first air inlet 2c and controls the circulation water pump 4 to stop working. Then the outside air enters the box body 1 through the second air inlet 2b, quickly takes away the remaining heat inside the box body 1, and makes the box body 1 return to the normal temperature.

[0042] S3: After the temperature sensor detects that the temperature inside the box body 1 reaches the set value, the control module controls the intake fan 1d, the first row of fans 1b, and the second row of fans 1c to stop working. Then personnel can enter the box body 1 to clean it in preparation for the next training session.

[0043] Since smoke is composed of small solid particles and is inevitably attached to the bottom of the box body 1 and not easily exhausted completely, in this embodiment, the intake fan 1d blows air from the bottom of the box body 1, which can blow up the smoke at the bottom, and then the first row of fans 1b and the second row of fans 1c installed at the top of the box body 1 exhaust the smoke. The effect of exhausting smoke is good and fast.

[0044] This embodiment also utilizes the heat carried by the smoke itself to heat the incoming cold air, which is a full utilization of heat. Moreover, as the smoke gradually decreases, the heat gradually reduces, and the temperature of the gas blown into the box body 1 also gradually decreases, meeting the requirement that the temperature of the equipment must gradually decrease. No additional temperature control equipment is required, and the structure is ingenious with low cost.

[0045] When the heat in the box body 1 decreases within a suitable range, only through the action conversion of a single box door 3, without the need to additionally install fans, the switching between cold air and hot air can be achieved, quickly removing the remaining heat inside the box body 1, improving the heat dissipation effect and reducing the cost.

[0046] Embodiment 2

[0047] As Figure 2 shown, since multiple scenarios are often involved in fire fighting training, multiple box bodies 1 for different scenarios are required. This embodiment makes further improvements based on Embodiment 1.

[0048] An opening is provided on the side wall of the cavity of the box body 1. A U-shaped pipe joint is provided on the circulating water pipe 5 near the opening, and a rotary joint is provided in the middle of the U-shaped pipe joint. Through the rotary joint, the U-shaped pipe joint can be rotated into a Z-shaped pipe joint, making the two originally inward-facing pipe joints become one inward-facing and one outward-facing. The outward-facing pipe joint can be connected to the outward-facing pipe joint of another box body 1. When two box bodies 1 are spliced, a set of water circulation equipment can be shared, which can reduce costs to a certain extent.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. An exhaust temperature and smoke exhaust ventilation system, characterized in that, It includes a box body, an air inlet box, a box door, a circulating water pump and a circulating water pipe; A top cavity is provided at the top of the box body, a first row of fans is provided on the ceiling of the box body, a second row of fans is provided at the top of the top cavity, and an intake fan is provided at the lower end of the box body; The air inlet box is arranged on the outer side wall of the box body, and the air inlet box is provided with a first cavity and a second cavity; the first cavity and the second cavity are communicated, and the first cavity is provided with a first air inlet communicated with the outside; the second cavity is provided with a second air inlet communicated with the outside, and the second cavity is also communicated with the intake fan; The box door is hinged on the air inlet box, and the box door can rotate around the hinge axis to switch back and forth between blocking the first air inlet and the second air inlet; The circulating water pump is arranged on the outer side wall of the box body, and the circulating water pump drives the water in the circulating water pipe to circulate; a part of the circulating water pipe is laid flat in the top cavity, and another part of the circulating water pipe extends into the first cavity so that the gas entering from the first air inlet passes through the circulating water pipe and then enters the second cavity.

2. The exhaust temperature and smoke exhaust ventilation system according to claim 1, wherein, An opening is provided on the side wall of the cavity; a U-shaped pipe joint is provided on the circulating water pipe near the opening, and a rotary joint is provided in the middle of the U-shaped pipe joint; the circulating water pipes of two box bodies can be spliced through the rotary joint.

3. The exhaust temperature and smoke exhaust ventilation system according to claim 1, characterized in that, The air inlet box has upper and lower layers, the first cavity is arranged in the upper layer, and the second cavity is arranged in the lower layer.

4. A temperature-discharging and smoke-exhausting ventilation system according to claim 1, characterized in that, The air inlet box is detachably connected to the box body.

5. The exhaust temperature and smoke exhaust ventilation system according to claim 1, wherein The box door is an automatic door driven by a motor.

6. The exhaust temperature and smoke exhaust ventilation system according to claim 5, characterized in that, It further includes a smoke sensor, a temperature sensor and a control module; the smoke sensor and the temperature sensor are arranged on the inner wall of the box body; the first row of fans, the second row of fans, the intake fan, the smoke sensor, the temperature sensor and the circulating water pump are all connected to the control module.

7. The exhaust temperature and smoke exhaust ventilation system according to claim 6, characterized in that, It further includes a usage method, which includes the following steps: S1: Start the control module, and the control module controls the box door to block the second air inlet and turn on the intake fan, the first row of fans, the second row of fans and the circulating water pump; S2: When the smoke sensor detects that the smoke in the box body is exhausted, control the box door to block the first air inlet and control the circulating water pump to stop working; S3: When the temperature sensor detects that the temperature in the box body reaches the set value, the control module controls the intake fan, the first row of fans and the second row of fans to stop working.

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