Cruise ship central air conditioner water mist fire extinguishing system

Abstract

The invention discloses a cruise ship central air conditioner water mist fire extinguishing system. The cruise ship central air conditioner water mist fire extinguishing system comprises a central air conditioner water mist fire extinguishing pipeline, a plurality of water mist nozzles and a whole ship water mist fire extinguishing main pipeline. The central air conditioner water mist fire extinguishing pipeline is arranged in a central air conditioner located in an air conditioner room. The water mist nozzles are evenly distributed on the central air conditioner water mist fire extinguishing pipeline and communicate with the central air conditioner water mist fire extinguishing pipeline. The whole ship water mist fire fighting main pipeline is communicated with the water inlet end of the central air conditioner water mist fire extinguishing pipeline and used for providing a pressure water source for the central air conditioner water mist fire extinguishing pipeline. The water mist fire extinguishing system of the central air conditioner of the cruise ship is integrated in the central air conditioner, extra space of the air conditioner room is not occupied, the air conditioner room is arranged in cooperation with compact layout of equipment and pipelines in the air conditioner room, the original layout mode of the air conditioner room is prevented from being changed, and the installation and maintenance difficulty of the water mist fire extinguishing system of the central air conditioner of the cruise ship is reduced.

Description

Technical Field

[0001] This application relates to the field of marine fire protection technology, and in particular to a water mist fire extinguishing system for a cruise ship's central air conditioning system. Background Technology

[0002] Cruise ship air conditioning systems operate under high load, high humidity, and high salt spray conditions for extended periods. The air conditioning room, as the space for the installation and layout of central air conditioning units, typically houses a large number of auxiliary pipes, cable trays, fan units, and other electromechanical equipment.

[0003] To address the potential fire risk of central air conditioning units, most current methods involve installing water mist pipes and nozzles within the air conditioning unit room. This creates a water mist coverage area to extinguish the fire. However, due to the compact layout of equipment and the dense arrangement of pipes and cables inside the air conditioning unit room, the effective working space for the water mist nozzles is often severely obstructed. Numerous surrounding pipelines hinder the spray path, making it difficult for the water mist to effectively cover the fire-prone core areas of the central air conditioning unit. Consequently, in the event of a fire, this results in a low success rate of fire suppression and makes reliable protection of the central air conditioning unit difficult to achieve. Summary of the Invention

[0004] The purpose of this invention is to provide a water mist fire suppression system for cruise ship central air conditioning, which can solve the above-mentioned problems existing in the prior art.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] On the one hand, a water mist fire suppression system for cruise ship central air conditioning is provided, including: A central air conditioning water mist fire suppression pipeline, wherein the central air conditioning water mist fire suppression pipeline is installed inside the central air conditioning unit located in the air conditioning room; Multiple water mist nozzles are evenly distributed on the central air conditioning water mist fire extinguishing pipeline and are respectively connected to the central air conditioning water mist fire extinguishing pipeline. The ship's main water mist fire suppression pipeline is connected to the inlet of the central air conditioning water mist fire suppression pipeline, and is used to provide pressurized water to the central air conditioning water mist fire suppression pipeline.

[0007] Preferably, the central air conditioner includes a supply fan and an exhaust fan; a plurality of water mist nozzles are respectively arranged on the top of the supply fan and the exhaust fan.

[0008] Preferably, the spray direction of each water mist nozzle arranged on the top of the blower is towards the area where the blower impeller and blower motor are located; the spray direction of each water mist nozzle arranged on the top of the exhaust fan is towards the area where the exhaust fan impeller and exhaust motor are located.

[0009] Preferably, at least two of the water mist nozzles are arranged on the top of the exhaust fan, and the two water mist nozzles arranged on the top of the exhaust fan are symmetrically arranged along the frame of the exhaust fan.

[0010] Preferably, at least one of the water mist nozzles is disposed on the top of the blower.

[0011] Preferably, the spray angle of the water mist nozzle is 30° to 90°.

[0012] Preferably, the central air conditioning water mist fire extinguishing pipeline is a stainless steel pipeline.

[0013] Preferably, the central air conditioning water mist fire extinguishing pipeline is equipped with a pressure regulating valve, which is used to regulate the water pressure entering each of the water mist nozzles.

[0014] Preferably, the central air conditioning water mist fire extinguishing pipeline is equipped with a one-way valve, which is used to prevent water in the central air conditioning water mist fire extinguishing pipeline from flowing back to the main water mist fire extinguishing pipeline of the entire ship.

[0015] Preferably, the central air conditioning water mist fire extinguishing pipeline is equipped with a branch control valve, which is used to independently control the spraying start and stop of each water mist nozzle installed on the central air conditioning water mist fire extinguishing pipeline.

[0016] The beneficial effects of this application are as follows: This application integrates the cruise ship's central air conditioning water mist fire suppression system into the interior of the central air conditioning unit, without occupying extra space in the air conditioning room. It is designed to fit the compact layout of the equipment and pipelines in the air conditioning room, avoiding changes to the original layout of the air conditioning room and reducing the difficulty of installing and maintaining the cruise ship's central air conditioning water mist fire suppression system.

[0017] This application places the central air conditioning water mist fire suppression pipeline inside the central air conditioning unit, avoiding the obstruction of dense pipes and cables inside the air conditioning unit from a spatial layout perspective, so that the water mist can directly reach the core components of the central air conditioning unit, achieving precise fire suppression protection for the central air conditioning unit. Attached Figure Description

[0018] The present application will now be described in further detail with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the structure of a cruise ship central air conditioning water mist fire suppression system provided in an embodiment of this application; Figure 2 for Figure 1 A top-view structural diagram of a central air conditioning unit.

[0020] In the picture: 100. Central air conditioning water mist fire suppression piping; 200. Central air conditioner; 210. Air supply fan; 220. Exhaust fan; 300. Water mist nozzle; 400. Main water mist fire suppression piping for the entire ship. Detailed Implementation

[0021] To make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this application are further described in detail below. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0023] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] Figure 1 This is a schematic diagram of the structure of a cruise ship central air conditioning water mist fire suppression system provided in an embodiment of this application; Figure 2 for Figure 1 A top-view structural diagram of a central air conditioning unit. Figure 2 The ship was not equipped with a central air conditioning water mist fire suppression pipeline of 100 meters or a main water mist fire suppression pipeline of 400 meters.

[0025] like Figure 1 , Figure 2As shown, this embodiment provides a water mist fire suppression system for a cruise ship's central air conditioning system, including: a central air conditioning water mist fire suppression pipeline 100, multiple water mist nozzles 300, and a ship-wide water mist fire suppression main pipeline 400. The central air conditioning water mist fire suppression pipeline 100 is installed inside the central air conditioner 200 located in the air conditioning unit room; the multiple water mist nozzles 300 are evenly distributed on the central air conditioning water mist fire suppression pipeline 100 and are respectively connected to the central air conditioning water mist fire suppression pipeline 100; the ship-wide water mist fire suppression main pipeline 400 is connected to the water inlet of the central air conditioning water mist fire suppression pipeline 100, and is used to provide a pressurized water source for the central air conditioning water mist fire suppression pipeline 100. When a fire occurs in the central air conditioner 200, the ship's main water mist fire suppression pipeline 400 immediately supplies water with a preset pressure to the central air conditioner water mist extinguishing pipeline 100. The pressurized water is then delivered through the central air conditioner water mist extinguishing pipeline 100 to each water mist nozzle 300. After being atomized by the nozzles 300, the water mist is sprayed into the interior of the central air conditioner 200. The atomized water mist can directly act on the fire area inside the central air conditioner 200, achieving rapid fire extinguishing and fire suppression. By placing the central air conditioner water mist extinguishing pipeline inside the central air conditioner, the spatial layout avoids the obstruction of dense pipes and cables within the air conditioning unit, allowing the water mist to directly reach the core components of the central air conditioner, achieving precise fire suppression and protection.

[0026] This embodiment integrates the cruise ship's central air conditioning water mist fire suppression system into the interior of the central air conditioning unit, without occupying extra space in the air conditioning room. It is set up in a compact layout that matches the equipment and pipelines in the air conditioning room, avoiding changes to the original layout of the air conditioning room and reducing the difficulty of installing and maintaining the cruise ship's central air conditioning water mist fire suppression system.

[0027] In one embodiment, the central air conditioner 200 includes a blower 210 and an exhaust fan 220; a plurality of water mist nozzles 300 are respectively arranged on the top of the blower 210 and the exhaust fan 220.

[0028] In this embodiment, water mist nozzles 300 are installed for the supply fan 210 and exhaust fan 220, which are high-risk fire sources within the central air conditioner 200. The fire extinguishing medium is delivered to the core risk area through the water mist nozzles 300. Compared to large-area spraying throughout the entire interior of the central air conditioner 200, this significantly improves the targeting and efficiency of fire extinguishing while reducing resource consumption. Furthermore, placing the water mist nozzles 300 on top of the supply fan 210 and exhaust fan 220 effectively shortens the spray path and eliminates obstructions, allowing the water mist from the nozzles 300 to quickly cover the entire supply fan 210 and exhaust fan 220.

[0029] Optionally, the spray angle of the water mist nozzle 300 can be adjusted on the central air conditioning water mist fire extinguishing pipeline 100. The spray direction of the water mist nozzle 300 can be adjusted according to the actual layout inside the central air conditioning unit 200 to suit different fan models and improve the versatility of the water mist nozzle 300.

[0030] Furthermore, the spray angle of the water mist nozzle 300 is 30° to 90°. It should also be noted that the angle between the spray direction of the water mist nozzle 300 and the axis of the blower 210 (or exhaust fan 220) can be 15° to 45°. This setting can prevent the water mist sprayed by the water mist nozzle 300 from directly impacting the precision components of the bearings of the blower 210 (or exhaust fan 220), and can also achieve full coverage of the blower 210 (or exhaust fan 220) and surrounding high-risk fire areas.

[0031] Optionally, the spray direction of each of the water mist nozzles 300 arranged on the top of the blower 210 is towards the area where the blower impeller and blower motor of the blower 210 are located; the spray direction of each of the water mist nozzles 300 arranged on the top of the exhaust fan 220 is towards the area where the exhaust impeller and exhaust motor of the exhaust fan 220 are located.

[0032] In this embodiment, the air supply impeller, air supply motor, exhaust impeller, and exhaust motor are the core moving and power components of the air supply fan 210 and exhaust fan 220, and also high-risk fire sources inside the central air conditioner 200. These components, due to long-term high-speed operation, are prone to ignition due to friction, circuit aging, overload, and other factors. Furthermore, given the compact internal structure and concentrated flammable parts of the central air conditioner 200, a fire can easily spread rapidly. In this embodiment, the water mist nozzles 300 are precisely directed towards this area, achieving targeted spray protection for the core risk point, effectively improving the efficiency of initial fire suppression and reducing the risk of fire spread. Simultaneously, the water mist nozzles 300 are directed towards the core components, avoiding indiscriminate spraying of water mist into non-fire areas inside the central air conditioner 200, reducing the consumption of extinguishing media and minimizing the impact of water mist on other components inside the central air conditioner 200.

[0033] It should be noted that, in addition to the air supply impeller and motor of the air supply fan 210 and the exhaust impeller and motor of the exhaust fan 220, which are high-risk fire sources, the electrical control box and its internal electrical components, heat exchanger, refrigerant piping, humidifier, and fan bearing housing inside the central air conditioner 200 are also high-risk fire sources. Depending on the actual operating conditions, the spray direction of the water mist nozzle 300 can be selectively and precisely directed towards these high-risk fire sources inside the central air conditioner 200. Specific examples will not be provided here.

[0034] Optionally, at least two water mist nozzles 300 are arranged on the top of the exhaust fan 220, and the two water mist nozzles 300 arranged on the top of the exhaust fan 220 are symmetrically arranged along the frame of the exhaust fan 220. At least one water mist nozzle 300 is arranged on the top of the supply fan 210. It should be noted that the number of water mist nozzles 300 arranged on the top of the exhaust fan 220 is greater than the number of water mist nozzles 300 arranged on the top of the supply fan 210, and should not be limited to a specific number of water mist nozzles 300. In this embodiment, the exhaust fan 220 usually undertakes the function of exhausting hot air and exhaust gas from the central air conditioner 200. The operating temperature of the exhaust fan 220 is higher, and the fire risk and spread speed are relatively greater. Using at least two water mist nozzles 300 symmetrically arranged enhances the spray coverage and fire extinguishing intensity of the area of ​​the exhaust fan 220. The operating conditions of the supply fan 210 are relatively mild, and a relatively small number of water mist nozzles 300 can meet the protection requirements of the core area of ​​the supply fan 210. In this embodiment, the water mist nozzles 300 are arranged differently according to the protection needs of different areas inside the central air conditioner 200. The number of water mist nozzles 300 is increased in areas with strong protection needs inside the central air conditioner 200, and the number of water mist nozzles 300 is reduced in areas with weak protection needs inside the central air conditioner 200. This balances fire extinguishing effect and economy, and avoids resource waste caused by over-protection.

[0035] In one embodiment, the central air conditioning water mist fire suppression pipeline 100 is made of stainless steel. Considering that the air conditioning room is located in the enclosed cabin environment of a cruise ship, with high salt content and humidity, ordinary pipelines are easily corroded and rusted, leading to pipeline blockage and leakage. Stainless steel pipelines, on the other hand, perform better in terms of corrosion resistance and moisture resistance, effectively resisting salt spray erosion and water vapor oxidation in the air conditioning room, significantly extending the service life of the central air conditioning water mist fire suppression pipeline 100, reducing pipeline failures caused by corrosion, and lowering the frequency and cost of system maintenance.

[0036] In one embodiment, a pressure regulating valve is provided on the central air conditioning water mist fire suppression pipeline 100. The pressure regulating valve is used to regulate the water pressure entering each of the water mist nozzles 300. Considering the pipe resistance difference among the multiple water mist nozzles 300 on the central air conditioning water mist fire suppression pipeline 100, the water mist nozzles 300 located far from the water inlet of the central air conditioning water mist fire suppression pipeline 100 are prone to insufficient water pressure and poor atomization effect. Here, adjusting the water pressure of the central air conditioning water mist fire suppression pipeline 100 by using the pressure regulating valve can compensate for the pipe resistance loss, ensure that the water supply pressure of each of the water mist nozzles 300 is consistent, and uniformly distribute the spray intensity of each of the water mist nozzles 300.

[0037] In addition, the pressure regulating valve can be adjusted according to the progress of the fire. Specifically, in the early stage of the fire, the water supply pressure of the central air conditioning water mist fire extinguishing pipeline 100 can be reduced by adjusting the pressure regulating valve to achieve precise spraying. When the fire expands, the water supply pressure of the central air conditioning water mist fire extinguishing pipeline 100 can be increased by adjusting the pressure regulating valve to enhance the spray coverage and fire extinguishing intensity, ensuring that the water pressure matches the spraying requirements throughout the process.

[0038] Furthermore, multiple pressure regulating valves can be connected in series on each branch of the central air conditioning water mist fire extinguishing pipeline 100. Each pressure regulating valve individually adjusts the water supply pressure in each branch of the central air conditioning water mist fire extinguishing pipeline 100 to meet the different spraying needs of the areas covered by each branch of the central air conditioning water mist fire extinguishing pipeline 100, ensuring that the water mist sprayed from the nozzles reaches the preset atomization particle size and spray intensity, accurately acts on the fire area, and achieves efficient fire extinguishing.

[0039] In one embodiment, a one-way valve is provided on the central air conditioning water mist fire suppression pipeline 100. The one-way valve is used to prevent water in the central air conditioning water mist fire suppression pipeline 100 from flowing back to the ship's main water mist fire suppression pipeline 400. When a fire is triggered inside the central air conditioning unit 200, the pressurized water source output from the ship's main water mist fire suppression pipeline 400 flows into the central air conditioning water mist fire suppression pipeline 100 through the one-way valve. After being guided by the central air conditioning water mist fire suppression pipeline 100, it is atomized and sprayed onto the fire area by each water mist nozzle 300. After the fire is extinguished, the main water mist fire suppression pipeline 400 of the entire ship stops supplying water, and the water pressure in the central air conditioning water mist fire suppression pipeline 100 drops rapidly. The one-way valve automatically closes under the reverse action of its own valve disc reset force and the residual water pressure in the pipeline, cutting off the water connection between the central air conditioning water mist fire suppression pipeline 100 and the main water mist fire suppression pipeline 400 of the entire ship. This prevents the residual water in the central air conditioning water mist fire suppression pipeline 100 from flowing back into the main water mist fire suppression pipeline 400 of the entire ship, thus ensuring the stability of the water supply to the cruise ship's central air conditioning water mist fire suppression system.

[0040] Multiple one-way valves can be connected in series on each branch of the central air conditioning water mist fire extinguishing pipeline 100. The one-way valves can prevent backflow between the branch pipelines and better meet the pipeline layout requirements of independent spraying in multiple areas.

[0041] Furthermore, a fire monitoring module is installed inside the central air conditioner 200. This module is electrically connected to the ship's water mist fire suppression controller and the control valves of the water mist nozzles 300. The fire monitoring module includes multiple temperature sensors and multiple smoke sensors. These sensors are located near high-risk fire sources inside the central air conditioner 200, such as the air supply impeller and motor of the blower 210, and the exhaust impeller and exhaust motor of the exhaust fan 220.

[0042] When the fire monitoring module inside the central air conditioner 200 detects that the temperature exceeds a preset value, or when the fire monitoring module inside the central air conditioner 200 detects smoke, the fire monitoring module sends fire information to the ship's water mist fire suppression controller. The ship's water mist fire suppression controller then controls the opening of the control valves of the water mist nozzles 300 based on the fire information. Here, the ship's water mist fire suppression controller can control only the opening of the control valves of the water mist nozzles 300 within the fire source area, while the water mist nozzles 300 outside the fire source area remain closed.

[0043] In one embodiment, the central air conditioning water mist fire suppression pipeline 100 is equipped with a branch control valve, which is used to independently control the spraying start and stop of each water mist nozzle 300 installed on the central air conditioning water mist fire suppression pipeline 100. The output end of one branch control valve can be connected to one water mist nozzle 300 or to multiple water mist nozzles 300 within a preset area. The input end of the branch control valve is connected to the main pipeline of the central air conditioning water mist fire suppression pipeline 100.

[0044] When a fire occurs in a preset area inside the central air conditioner 200, the corresponding branch control valve for that preset area can be opened to supply pressurized water to the water mist nozzles 300 within that preset area, achieving directional spraying fire suppression in the predetermined area. The branch control valves for other preset areas inside the central air conditioner 200 remain closed, and the water mist nozzles 300 in those areas do not spray.

[0045] When multiple preset zones inside the central air conditioner 200 experience fire simultaneously, multiple branch control valves corresponding to each preset zone can be opened synchronously to achieve coordinated fire suppression in multiple zones. After the fire is extinguished, the branch control valves that are in the open state can be closed to stop the spraying.

[0046] In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and other orientations or positional relationships are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no special meaning.

[0047] In the description of this specification, references to terms such as "an embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0048] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0049] The technical principles of this application have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this application without inventive effort, and these embodiments will all fall within the scope of protection of this application.

Claims

1. A water mist fire suppression system for a cruise ship's central air conditioning system, characterized in that, include: A central air conditioning water mist fire extinguishing pipeline (100) is installed inside the central air conditioner (200) located in the air conditioning room. Multiple water mist nozzles (300) are evenly distributed on the central air conditioning water mist fire extinguishing pipeline (100) and are respectively connected to the central air conditioning water mist fire extinguishing pipeline (100). The ship's main water mist fire suppression pipeline (400) is connected to the inlet of the central air conditioning water mist fire suppression pipeline (100) and is used to provide pressurized water to the central air conditioning water mist fire suppression pipeline (100).

2. The cruise ship central air conditioning water mist fire suppression system according to claim 1, characterized in that, The central air conditioner (200) includes a blower (210) and an exhaust fan (220); a plurality of water mist nozzles (300) are respectively arranged on the top of the blower (210) and the exhaust fan (220).

3. The cruise ship central air conditioning water mist fire suppression system according to claim 2, characterized in that, The spray direction of each of the water mist nozzles (300) arranged on the top of the blower (210) is toward the area where the blower impeller and blower motor of the blower (210) are located; the spray direction of each of the water mist nozzles (300) arranged on the top of the exhaust fan (220) is toward the area where the exhaust impeller and exhaust motor of the exhaust fan (220) are located.

4. The cruise ship central air conditioning water mist fire suppression system according to claim 2, characterized in that, At least two of the water mist nozzles (300) are arranged on the top of the exhaust fan (220), and the two water mist nozzles (300) arranged on the top of the exhaust fan (220) are symmetrically arranged along the frame of the exhaust fan (220).

5. The cruise ship central air conditioning water mist fire suppression system according to claim 2, characterized in that, At least one of the water mist nozzles (300) is disposed on top of the blower (210).

6. The cruise ship central air conditioning water mist fire suppression system according to claim 1, characterized in that, The spray angle of the water mist nozzle (300) is 30° to 90°.

7. The cruise ship central air conditioning water mist fire suppression system according to claim 1, characterized in that, The central air conditioning water mist fire extinguishing pipeline (100) is a stainless steel pipeline.

8. The cruise ship central air conditioning water mist fire suppression system according to any one of claims 1 to 7, characterized in that, The central air conditioning water mist fire extinguishing pipeline (100) is equipped with a pressure regulating valve, which is used to regulate the water pressure entering each of the water mist nozzles (300).

9. The cruise ship central air conditioning water mist fire suppression system according to any one of claims 1 to 7, characterized in that, The central air conditioning water mist fire extinguishing pipeline (100) is equipped with a one-way valve, which is used to prevent water in the central air conditioning water mist fire extinguishing pipeline (100) from flowing back to the ship's main water mist fire extinguishing pipeline (400).

10. The cruise ship central air conditioning water mist fire suppression system according to any one of claims 1 to 7, characterized in that, The central air conditioning water mist fire extinguishing pipeline (100) is equipped with a branch control valve, which is used to independently control the spraying start and stop of each water mist nozzle (300) installed on the central air conditioning water mist fire extinguishing pipeline (100).

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