Gas-collecting hood device for cruise ship kitchen

Abstract

The invention discloses a gas-collecting hood device for a cruise ship kitchen, comprising: a device housing, the bottom side of which is provided with a gas-collecting groove; the spraying system comprises a pipe system, a spraying head and a spraying head cover assembly, the spraying head is connected to the end of the pipe system, and the spraying head is located in the gas collecting groove; the spray head cover assembly is connected with the spray head, the spray head cover assembly can close the spray head in a closed state, and the spray head can spray fire fighting water outwards in an open state of the spray head cover assembly. The sprayer is arranged in the gas collecting groove, so that the problem that the area below a gas collecting hood in an existing cruise ship kitchen is not covered with the fire-fighting sprayer is solved, the whole-area covering of the kitchen fire extinguishing function is achieved, and the fire-fighting safety of the kitchen is greatly improved. In addition, the spray head cover assembly arranged in the scheme is kept closed in a normal state, the spray head is separated from the surrounding environment, pollution and blockage of oil fume to the spray head are effectively avoided, the service life of the spray head is prolonged, and the maintenance cost is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of fire fighting systems of ships, and in particular to an air collecting hood device for a cruise ship kitchen. Background Art

[0002] At present, cruise ship kitchens generally use hoods as the main exhaust devices. These hoods are usually hung on the top of the kitchen. The original design intention is to effectively collect the exhaust gas such as oil smoke and steam generated during the cooking process, maintain the relative cleanliness of the air in the kitchen, and reduce the adverse effects of oil smoke on the kitchen environment and equipment. However, the existing hoods have obvious defects in structural design. They are generally large in area, which is to cover a larger range of cooking areas and ensure that as much exhaust gas as possible is collected. But this large-area design brings a series of new problems.

[0003] What is particularly critical is that in terms of fire safety layout, the area below the gas hood of the existing cruise ship kitchen has become a "blind spot" covered by fire protection facilities. Since the gas hood is large and hung on the top, it occupies a large space on the top of the kitchen, making it impossible to reasonably install fire sprinklers under this area. Once a fire occurs in this area, effective fire extinguishing measures cannot be taken in time, and the fire is likely to spread rapidly to the surrounding areas, thereby threatening the safety of the entire kitchen and even the cruise ship.

[0004] Therefore, how to improve the layout of fire-fighting facilities in cruise ship kitchens and achieve full-area coverage of fire-fighting functions has become a technical problem that needs to be solved urgently. Summary of the invention

[0005] The purpose of the embodiments of the present invention is to provide an air collecting hood device for a cruise ship kitchen, which can solve the above-mentioned problems existing in the prior art.

[0006] To achieve the above objectives, this application adopts the following technical solutions:

[0007] An air collecting hood device for a cruise ship kitchen, comprising:

[0008] The device housing has a gas collecting groove formed on the bottom side;

[0009] The sprinkler system includes a pipe system, a sprinkler head and a sprinkler head cover assembly. The sprinkler head is connected to the end of the pipe system and is located in the air collecting groove. The sprinkler head cover assembly is connected to the sprinkler head. When the sprinkler head cover assembly is in a closed state, the sprinkler head can be sealed. When the sprinkler head cover assembly is in an open state, the sprinkler head can spray fire water outward.

[0010] Optionally, the nozzle cover assembly includes a top cover plate and a closed box, and the closed cover is covered on the lower side of the top cover plate to form a closed space; the nozzle includes a connecting pipe portion and a nozzle portion, the connecting pipe portion is connected to the pipe system, the top cover plate is provided with a perforation, and the connecting pipe portion penetrates through the perforation so that the nozzle portion is placed in the closed box;

[0011] Wherein, when the water storage amount in the closed box reaches a set value, the closed box can be separated from the top cover plate and opened under the action of gravity.

[0012] Optionally, the nozzle cover assembly further includes an elastic member, the elastic member connects the top cover plate and the closed box, and the elastic restoring force of the elastic member keeps the closed box in a closed state; and when the water storage amount in the closed box reaches a set value, the closed box can be opened under the action of the gravity of the closed box to overcome the elastic force of the elastic member.

[0013] Optionally, the elastic member is a coil spring, the nozzle cover assembly further includes a wire winding drum and a suspension rope wound around the wire winding drum, the wire winding drum is connected to the coil spring, and one end of the suspension rope extends downward and is connected to the closed box; the wire winding drum winds the suspension rope through the torsion of the coil spring, so that the closed box is kept in a closed state; as the water storage amount in the closed box increases, the closed box can move downward to overcome the elastic force of the coil spring, and the closed box is gradually opened.

[0014] Optionally, a coil spring support is fixedly installed on the bottom side of the top cover plate, the coil spring support includes a suspension plate and a support shaft, the top side of the suspension plate is fixedly connected to the top cover plate, and one end of the support shaft is fixedly connected to the suspension plate; the coil spring is sleeved outside the support shaft, and one end is clamped to the support shaft; the wire winding drum is sleeved outside the coil spring and is clamped to the other end of the support shaft.

[0015] Optionally, a threaded connection portion is provided at one end of the support shaft away from the suspension plate, and an end cover is threadedly installed on the threaded connection portion to limit the coil spring and the wire winding drum from separating from the support shaft.

[0016] Optionally, a drain valve is further provided at the bottom of the closed box, and the accumulated water in the closed box can be discharged through the opening of the drain valve.

[0017] Optionally, the device housing includes an upper housing seat and a housing bottom cover, the housing bottom cover is installed on the bottom side of the upper housing seat, an air inlet cavity is formed between the upper housing seat and the housing bottom cover, and an exhaust pipe communicating with the air inlet cavity is connected to the top of the upper housing seat; a gas collection groove is formed on the lower side of the housing bottom cover, and an air inlet grid communicating the gas collection groove with the air inlet cavity is provided on the housing bottom cover.

[0018] Optionally, the pipe system is arranged in the air inlet cavity; the bottom shell cover is provided with a first pipe passing hole, and the pipe system extends downward through the first pipe passing hole to the air collecting groove, and the nozzle is connected to the pipe system in the air collecting groove.

[0019] Optionally, the pipe system includes a main pipe and a plurality of branch pipes connected to the main pipe. The side wall of the upper shell seat is provided with a second pipe passing hole, and the main pipe extends through the second pipe passing hole into the air inlet cavity and is connected to the branch pipes; the bottom shell cover is provided with a plurality of the first pipe passing holes distributed in an array, and each branch pipe extends through the first pipe passing hole into the air collecting groove and is connected to the nozzle.

[0020] The beneficial effects of the present application are as follows: In the air collecting hood device provided by the present invention, by arranging the nozzle in the air collecting groove, the problem that the area below the air collecting hood in the existing cruise ship kitchen is not covered by the fire nozzle is solved, and the full-area coverage of the kitchen fire extinguishing function is realized. No matter where the fire occurs in the kitchen, the sprinkler system can respond in time and spray water to extinguish the fire, greatly improving the fire safety of the kitchen. In addition, considering that the heavy oil fume environment in the kitchen is likely to cause the nozzle to be blocked, affecting the normal use of the sprinkler system, the nozzle cover assembly provided in this solution remains closed in the normal state, separating the nozzle from the surrounding environment, effectively avoiding the pollution and blockage of the nozzle by the oil fume, prolonging the service life of the nozzle, and reducing the maintenance cost. Description of the Drawings

[0021] The following further details the present application according to the drawings and embodiments.

[0022] Figure 1 It is a longitudinal sectional view of the air collecting hood device for a cruise ship kitchen according to an embodiment of the present application;

[0023] Figure 2 It is a top view of the air collecting hood device for a cruise ship kitchen according to an embodiment of the present application;

[0024] Figure 3 It is a schematic structural view of the nozzle cover assembly in a closed state according to an embodiment of the present application;

[0025] Figure 4 It is a schematic structural view of the nozzle cover assembly in an open state according to an embodiment of the present application;

[0026] Figure 5 It is Figure 3 a schematic structural view of the shown structure after hiding the closed box;

[0027] Figure 6 It is Figure 5 an exploded schematic view of the shown structure;

[0028] Figure 7Schematic diagram of the installation structure of the suspension rope described in the embodiments of the present application;

[0029] Figure 8 is Figure 7 explosion diagram of the structure shown;

[0030] Figure 9 Schematic diagram of the structure of the closed box described in the embodiments of the present application.

[0031] In the figure:

[0032] 1. Device housing; 11. Upper shell seat; 12. Bottom shell cover; 13. Exhaust pipe; 14. Intake cavity; 15. Gas collection groove; 21. Pipe system; 22. Sprinkler head; 221. Connecting pipe part; 222. Nozzle part; 23. Sprinkler head cover assembly; 231. Top cover plate; 2311. Perforation; 232. Closed box; 233. Spring winding support; 2331. Hanging plate; 2332. Support shaft; 234. Wire winding drum; 235. Suspension rope; 236. Elastic member; 237. End cover; 238. Drain valve. Detailed implementation manners

[0033] To make the technical problems solved by the present application, the technical solutions adopted and the achieved technical effects clearer, the technical solutions of the embodiments of the present application will be further described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0034] In the description of the present application, unless otherwise clearly defined and limited, the terms "connected", "connected", "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0035] In the present application, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "above" and "on the top" of the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below" and "under the bottom" of the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than that of the second feature.

[0036] Currently, the exhaust hoods are generally used as the main smoke exhaust devices in cruise ship kitchens. These exhaust hoods are usually hung at the top of the kitchen. Their original design intention is to effectively collect the waste gases such as oil fumes and steam generated during the cooking process, maintain the relative cleanliness of the air in the kitchen, and reduce the adverse effects of oil fumes on the kitchen environment and equipment. However, the existing exhaust hoods have obvious defects in their structural design. Their areas are generally large. This is to be able to cover a larger cooking area and ensure that as much waste gas as possible is collected. But this large-area design has brought a series of new problems.

[0037] Particularly crucial is that in terms of fire safety layout, the area below the exhaust hood of the existing cruise ship kitchen has become a "blind area" covered by fire-fighting facilities. Due to the large volume of the exhaust hood and its hanging at the top, it occupies a large space at the top of the kitchen, resulting in the inability to reasonably install fire sprinklers below this area. Once a fire occurs in this area, effective fire extinguishing measures cannot be taken in time, and the fire is very likely to spread rapidly to the surrounding areas, thereby threatening the safety of the entire kitchen and even the cruise ship.

[0038] Therefore, how to improve the fire-fighting facility layout of the cruise ship kitchen and achieve full-area coverage of the fire extinguishing function has become a technical problem that needs to be solved urgently at present.

[0039] In order to overcome the above technical problems, as Figure 1-2 shown, the embodiment of the present application provides an exhaust hood device for a cruise ship kitchen, including:

[0040] A device housing 1, with a gas collection groove 15 formed at the bottom side;

[0041] A sprinkler system, including a pipe system 21, sprinkler heads 22 and a sprinkler head cover assembly 23. The sprinkler heads 22 are connected to the ends of the pipe system 21, and the sprinkler heads 22 are located in the gas collection groove 15; the sprinkler head cover assembly 23 is connected to the sprinkler heads 22. In the closed state, the sprinkler head cover assembly 23 can close the sprinkler heads 22. In the open state, the sprinkler heads 22 can spray fire-fighting water outwards.

[0042] Specifically, a gas collection groove 15 is formed at the bottom side of the device housing 1. This is a key structural part for the exhaust hood device to achieve the function of collecting waste gases such as oil fumes. The design of the gas collection groove 15 enables the oil fumes, steam, etc. generated during the kitchen cooking process to be effectively converged and guided, facilitating subsequent discharge treatment and maintaining the relative cleanliness of the air in the kitchen.

[0043] In the structure of the sprinkler system, the pipe system 21 serves as the passage for conveying fire-fighting water in the sprinkler system, responsible for delivering fire-fighting water from the water source to the positions of each sprinkler 22, ensuring a stable water supply for the sprinkler 22 when needed. The sprinkler 22 is connected to the end of the pipe system 21 and is located within the air-collecting groove 15. The sprinkler 22 is the core component for the sprinkler system to achieve the fire extinguishing function. When a fire occurs, the fire-fighting water is conveyed through the pipe system 21 to the sprinkler 22 and is sprayed out by the sprinkler 22 to extinguish the fire. The sprinkler cover assembly 23 is connected to the sprinkler 22 and has two states: closed and open. In the closed state, the sprinkler cover assembly 23 can separate the sprinkler 22 from the surrounding environment, preventing pollutants such as oil fumes from entering and clogging the spray holes of the sprinkler 22; in the open state, the sprinkler 22 can normally spray fire-fighting water outward to achieve the fire extinguishing function.

[0044] Normal working state (when there is no fire): During the daily use of the cruise ship kitchen, the air-collecting hood device mainly functions to collect and exhaust smoke. At this time, the sprinkler cover assembly 23 is in the closed state, enclosing the sprinkler 22 inside. Since the kitchen is a heavy oil fume area, when the oil fumes inhaled into the air-collecting hood pass by the sprinkler 22, the sprinkler cover assembly 23 can effectively block the direct contact between the oil fumes and the sprinkler 22, preventing the oil fumes from accumulating on the surface of the sprinkler 22 or entering the inside of the sprinkler 22, thereby preventing the sprinkler 22 from being clogged due to long-term exposure to the oil fume environment and ensuring that the sprinkler 22 can work properly when needed.

[0045] When a fire occurs: When a fire breaks out in the kitchen, the sprinkler system will be automatically activated. At this time, the sprinkler cover assembly 23 opens, and the sprinkler 22 is connected to the outside environment. The fire-fighting water is conveyed through the pipe system 21 to the sprinkler 22 and is sprayed out from the sprinkler 22. Since the sprinkler 22 is located within the air-collecting groove 15, the sprayed fire-fighting water can quickly spread to the kitchen environment under the air-collecting hood, extinguish the fire source, effectively control the spread of the fire, and reduce the fire loss.

[0046] Based on the air-collecting hood device provided in this embodiment, it has at least the following beneficial effects:

[0047] I. Achieve full fire protection coverage in the area: By arranging the sprinkler 22 within the air-collecting groove 15, the problem that there is no coverage of the fire sprinkler 22 in the area under the air-collecting hood in the existing cruise ship kitchen is solved, realizing full-area coverage of the kitchen fire extinguishing function. No matter where the fire occurs in the kitchen, the sprinkler system can respond in a timely manner and spray water to extinguish the fire, greatly improving the fire safety of the kitchen.

[0048] II. Prevent the sprinkler 22 from being clogged: The heavy oil fume environment in the kitchen easily causes the sprinkler 22 to be clogged, affecting the normal use of the sprinkler system. The sprinkler cover assembly 23 set in this solution remains closed under normal conditions, separating the sprinkler 22 from the surrounding environment, effectively avoiding the pollution and clogging of the sprinkler 22 by oil fumes, extending the service life of the sprinkler 22, and reducing the maintenance cost.

[0049] In one embodiment, as Figure 3-4 shown, the nozzle cover assembly 23 includes a top cover plate 231 and a closed box 232. The closed cover is covered on the lower side of the top cover plate 231 to form a closed space. The nozzle 22 includes a connecting pipe portion 221 and a nozzle portion 222. The connecting pipe portion 221 is connected to the pipe system 21. The top cover plate 231 is provided with a perforation 2311, and the connecting pipe portion 221 passes through the perforation 2311 so that the nozzle portion 222 is placed in the closed box 232.

[0050] Wherein, when the water storage amount in the closed box 232 reaches a set value, the closed box 232 can be separated and opened from the top cover plate 231 under the action of gravity.

[0051] When starting the fire protection, the water sprayed by the closed nozzle 22 will first converge in the closed box 232. As the water volume in the closed box 232 is quickly stored, the weight of the closed box 232 rapidly increases. When it reaches the set value, the gravity of the closed box 232 is greater than the binding force fixing it to the top cover plate 231, so it can be automatically separated and opened from the top cover plate 231. The opening method of the nozzle cover assembly 23 in this way is passive and does not require a separate driving force.

[0052] In the solution of this embodiment, the nozzle cover assembly 23 is composed of a top cover plate 231 and a closed box 232. The top cover plate 231 serves as a support and connection component, and the closed box 232 is used to cooperate with the top cover plate 231 to form a closed space in the normal state to protect the nozzle 22. This split design is convenient for installation, maintenance, and opening under specific conditions. The nozzle 22 includes a connecting pipe portion 221 and a nozzle portion 222. The connecting pipe portion 221 is connected to the pipe system 21 for transporting fire protection water. The nozzle portion 222 is the key part where the fire protection water is sprayed. The top cover plate 231 is provided with a perforation 2311, and the connecting pipe portion 221 passes through the perforation 2311, so that the nozzle portion 222 is placed in the closed box 232. This design not only ensures the connection between the nozzle 22 and the pipe system 21, but also realizes that the nozzle portion 222 is protected by the closed box 232 in the normal state to avoid oil fume pollution.

[0053] When starting the fire protection, the sprinkler head 22 begins to spray water. The water first converges inside the closed box 232. As the water volume rapidly increases and the water storage volume inside the closed box 232 reaches the set value, at this time, the weight of the closed box 232 rapidly increases due to the addition of water. When the gravity of the closed box 232 is greater than its binding force fixed to the top cover plate 231 (such as the clamping force of a buckle, the magnetic force of a magnetic attraction, etc.), the closed box 232 automatically separates from the top cover plate 231 and opens under the action of gravity, and the nozzle part 222 is exposed. The fire protection water can be normally sprayed into the surrounding environment to extinguish the fire. This opening method is passive and does not require an additional power source (such as a motor, a solenoid valve, etc.) to drive the closed box 232 to open. It can be achieved only by relying on the change in the gravity of the water inside the closed box 232, with a simple structure and a rapid response.

[0054] Among them, the closed box 232 is covered on the lower side of the top cover plate 231 to form a closed space. This covering method can adopt a variety of implementable methods, which can be but are not limited to:

[0055] Snap connection: Matching snap structures are provided at the contact edges of the top cover plate 231 and the closed box 232, and the covering and opening of the closed box 232 and the top cover plate 231 are realized through the snapping and separation of the snaps. The snap structure is simple and reliable, convenient for installation and disassembly, can ensure the stability of the connection between the closed box 232 and the top cover plate 231 to a certain extent, and at the same time can meet the requirement that the closed box 232 can be smoothly opened when needed.

[0056] Magnetic attraction connection: Magnetic materials are provided at the corresponding positions of the top cover plate 231 and the closed box 232, and the two are tightly attached by using magnetic force. The magnetic attraction connection method is convenient to operate and does not require a complex mechanical structure. It can maintain the stable covering of the closed box 232 and the top cover plate 231 in the normal state. When it needs to be opened, the two can be easily separated by overcoming the magnetic force through other external forces (such as the gravity of the water inside the closed box 232 in this embodiment).

[0057] Threaded connection (partially adapted): Although a complete threaded connection may not be very suitable for this scenario of frequent opening and closing, partial threaded structures can be designed at the contact part of the top cover plate 231 and the closed box 232 to assist in positioning and preliminary fixing, and then combined with other auxiliary fixing methods (such as the above-mentioned snap or magnetic attraction), while ensuring the connection stability, it is convenient to open.

[0058] In this embodiment, the structure design of the nozzle hood assembly 23 is simple. It adopts the combination of the top cover plate 231 and the closed box 232, and the opening method is based on the action of gravity, without a complex mechanical transmission mechanism or an electrical control system. This not only reduces the manufacturing cost of the device, but also reduces the probability of failure, improving the reliability and stability of the device. Importantly, the passive opening method does not require a separate driving force, avoiding the problem that the nozzle hood assembly 23 cannot be opened normally due to the failure of the driving component. In case of a fire, it can ensure that the nozzle hood assembly 23 is opened in time, enabling the nozzle 22 to work properly, and improving the response speed and fire extinguishing efficiency of the fire protection system. This structure and working principle are not affected by the complex environment of the cruise ship kitchen. Whether in a high-temperature, high-humidity or high-oil fume situation, it can work stably and reliably. At the same time, its simple structure is also convenient for installation and debugging in cruise ship kitchens with various different specifications and layouts, having strong adaptability.

[0059] In one embodiment, the nozzle hood assembly 23 further includes an elastic member 236. The elastic member 236 connects the top cover plate 231 and the closed box 232, and the closed box 232 is kept in a closed state by the elastic restoring force of the elastic member 236. When the water storage amount in the closed box 232 reaches a set value, the closed box 232 can overcome the elastic force of the elastic member 236 under the action of its own gravity to open the closed box 232.

[0060] The elastic member 236 connects the top cover plate 231 and the closed box 232. This connection method forms a dynamic association between the closed box 232 and the top cover plate 231. The elastic member 236 can be connected in various ways. For example, both ends of the elastic member 236 are respectively fixed on the top cover plate 231 and the closed box 232 by using structures such as hooks and slots to ensure that it can play a stable role.

[0061] In the normal state, the elastic member 236 pulls the closed box 232 towards the top cover plate 231 by virtue of its own elastic restoring force, making the closed box 232 tightly cover the lower side of the top cover plate 231, thus remaining in a closed state. This elastic restoring force can overcome possible slight external force interference, ensuring that the closed box 232 always reliably closes the nozzle 22 and effectively preventing oil fume from entering the interior of the nozzle 22. When the fire protection is activated, the nozzle 22 starts to spray water, and the water gradually accumulates in the closed box 232. As the water storage amount in the closed box 232 continuously increases, the weight of the closed box 232 also rapidly increases. When the gravity of the closed box 232 exceeds the elastic force of the elastic member 236, the closed box 232 overcomes the resistance of the elastic member 236 under the action of gravity, separates from the top cover plate 231 and opens. At this time, the nozzle part 222 is exposed, and the fire protection water can be normally sprayed for fire extinguishing.

[0062] The arrangement of the elastic member 236 enables the closed box 232 to stably maintain its closed state under normal conditions, without being affected by minor external forces such as daily vibrations and airflows in the kitchen, effectively avoiding the situation where the nozzle 22 is exposed to the fume environment due to the accidental opening of the closed box 232 caused by external factors, and further improving the protection effect on the nozzle 22.

[0063] In one embodiment, as Figures 7-8 shown, the elastic member 236 is a spiral spring. The nozzle cover assembly 23 further includes a cord winding drum 234 and a suspension cord 235 wound around the cord winding drum 234. The cord winding drum 234 is connected to the spiral spring, and one end of the suspension cord 235 extends downward and is connected to the closed box 232. The spiral spring's torsional force causes the cord winding drum 234 to wind up the suspension cord 235, thereby keeping the closed box 232 in a closed state. As the water storage capacity in the closed box 232 increases, the closed box 232 can move downward against the elastic force of the spiral spring, realizing the gradual opening of the closed box 232.

[0064] As a key component for providing elastic force, the spiral spring has unique torsional characteristics, capable of storing and releasing elastic potential energy, providing a power basis for the state change of the entire nozzle cover assembly 23. The cord winding drum 234 is connected to the spiral spring and is the control component for the winding and unwinding of the suspension cord 235. The cord winding drum 234 can rotate under the action of the spiral spring, thereby realizing the winding and unwinding of the suspension cord 235. One end of the suspension cord 235 extends downward and is connected to the closed box 232, playing a role in transmitting force. By winding and unwinding the suspension cord 235 through the cord winding drum 234, the up and down movement of the closed box 232 can be controlled. Specifically, the spiral spring is connected to the cord winding drum 234. When the spiral spring twists, it drives the cord winding drum 234 to rotate. The suspension cord 235 is wound around the cord winding drum 234, with one end fixed to the cord winding drum 234 and the other end connected to the closed box 232, forming a complete force transmission chain.

[0065] Under normal conditions, the coil spring is in a certain torsional state, and the torsion force it generates causes the winding drum 234 to rotate in the direction of winding the lifting rope 235. The winding drum 234 winds the lifting rope 235, and through the lifting rope 235, an upward pulling force is applied to the closed box 232, pulling the closed box 232 towards the top cover plate 231, so that the closed box 232 is tightly covered on the lower side of the top cover plate 231, thus maintaining a closed state and effectively preventing oil fumes from entering the inside of the nozzle 22. When a fire is triggered, the nozzle 22 starts to spray water, and the water gradually accumulates in the closed box 232. As the water storage in the closed box 232 increases, the weight of the closed box 232 continuously increases. When the gravity of the closed box 232 exceeds the elastic force of the coil spring (i.e., the upward pulling force applied by the coil spring to the closed box 232 through the lifting rope 235), the closed box 232 begins to move downward under the action of gravity, overcoming the elastic force of the coil spring. At this time, the winding drum 234 rotates in the reverse direction under the drive of the lifting rope 235, releasing the lifting rope 235, so that the closed box 232 can gradually open downward, and the nozzle part 222 is exposed, and the fire-fighting water can be sprayed normally to extinguish the fire.

[0066] The torsion characteristics of the coil spring enable more precise control over the maintenance of the closed state of the closed box 232 and the opening process. By reasonably selecting the specifications and initial torsional degree of the coil spring, the elastic force required for the closed box 232 to maintain the closed state and the critical gravity required for opening can be accurately set to ensure reliable operation under different working conditions. In this structure, the closed box 232 gradually opens downward under the action of gravity, overcoming the elastic force of the coil spring. This opening method is stable and slow, avoiding the possible water flow impact or the influence on surrounding equipment caused by sudden opening. Importantly, one end of the lifting rope 235 is fixed to the winding drum 234. After the closed box 232 is opened, under the connection of the lifting rope 235, the closed box 232 will not completely fall to the ground, avoiding the risk of injuring people or damaging objects; when it needs to be restored after extinguishing the fire, just directly pour out the water in the closed box 232, and the coil spring can automatically wind up the lifting rope 235, causing the closed box 232 to reset and close.

[0067] In one embodiment, a coil spring support 233 is fixedly installed on the bottom side of the top cover plate 231. The coil spring support 233 includes a suspension plate 2331 and a support shaft 2332. The top side of the suspension plate 2331 is fixedly connected to the top cover plate 231, and one end of the support shaft 2332 is fixedly connected to the suspension plate 2331; the coil spring is sleeved outside the support shaft 2332, and one end is clamped to the support shaft 2332; the winding drum 234 is sleeved outside the coil spring and is clamped to the other end of the support shaft 2332.

[0068] The installation method of this embodiment makes the connection between the coil spring, the wire winding drum 234 and the top cover plate 231 more stable. The hanging plate 2331 and the support shaft 2332 of the coil spring support 233 provide reliable support for the coil spring and the wire winding drum 234, avoiding the loosening or falling off of components during operation, and ensuring the stability and reliability of the device during long-term use. The installation relationship between each component is clear and the structure is compact. During the installation process, the coil spring support 233 can be fixed on the top cover plate 231 first, and then the coil spring and the wire winding drum 234 are installed in sequence. The operation is simple and convenient. During maintenance, it is also convenient to check, repair and replace each component, reducing the maintenance cost and difficulty.

[0069] In one embodiment, a threaded connection portion is provided at one end of the support shaft 2332 away from the hanging plate 2331, and an end cover 237 is threadedly installed on the threaded connection portion to limit the coil spring and the wire winding drum 234 from detaching from the support shaft 2332 through the end cover 237.

[0070] During the installation process, the coil spring is sleeved on the support shaft 2332 and clamped, then the wire winding drum 234 is sleeved outside the coil spring and clamped with the support shaft 2332, and finally the end cover 237 is tightened on the threaded connection portion of the support shaft 2332. The threaded fit between the end cover 237 and the threaded connection portion generates sufficient frictional force and axial force, so that the end cover 237 is firmly fixed on the support shaft 2332, thereby restricting the axial movement of the coil spring and the wire winding drum 234.

[0071] When the device is in the working state, the coil spring will generate elastic force due to torsion, and the wire winding drum 234 will rotate driven by the coil spring. Due to the limitation of the end cover 237, the coil spring and the wire winding drum 234 can only rotate and move relatively within a specified range on the support shaft 2332, and will not detach from the support shaft 2332 due to external force or its own movement, ensuring the relative position stability between the components of the device and ensuring that the device can work normally according to the design requirements.

[0072] In one embodiment, referring to Figure 9 , a drain valve 238 is further provided at the bottom of the closed box 232, and the accumulated water in the closed box 232 can be discharged through the opening of the drain valve 238.

[0073] After the fire extinguishing is completed, there is accumulated water remaining in the closed box 232. At this time, only need to open the drain valve 238, and the accumulated water in the closed box 232 will drain out of the closed box 232 through the channel of the drain valve 238 under the action of its own gravity. When the accumulated water is drained out, close the drain valve 238, and the closed box 232 can return to the initial state to prepare for a possible fire next time.

[0074] Specifically, the drainage function of the drain valve 238 cooperates with the previously mentioned function of the coil spring for automatic reset. After the drain valve 238 drains the accumulated water in the closed box 232, the weight of the closed box 232 is reduced, enabling the coil spring to drive the wire winding drum 234 to wind up the lifting rope 235 by virtue of its elastic potential energy, thereby pulling up and resetting the closed box 232 to close it, forming a complete operation process.

[0075] In one embodiment, the device housing 1 includes an upper housing seat 11 and a bottom housing cover 12. The bottom housing cover 12 is installed on the bottom side of the upper housing seat 11, and an air intake cavity 14 is formed between the upper housing seat 11 and the bottom housing cover 12. An exhaust pipe 13 communicating with the air intake cavity 14 is connected to the top of the upper housing seat 11; a gas collection groove 15 is formed on the lower side of the bottom housing cover 12, and the bottom housing cover 12 is provided with an air intake grid that communicates the gas collection groove 15 with the air intake cavity 14.

[0076] In the structure of this embodiment, the device housing 1 is composed of two parts, namely the upper housing seat 11 and the bottom housing cover 12. This split design facilitates the assembly, disassembly, installation, and maintenance of the device's internal components. The bottom housing cover 12 is installed on the bottom side of the upper housing seat 11, and the two jointly enclose a relatively independent spatial structure. An air intake cavity 14 is formed between the upper housing seat 11 and the bottom housing cover 12. The air intake cavity 14 provides a space for the flow and convergence of gas. An exhaust pipe 13 is connected to the top of the upper housing seat 11, and the exhaust pipe 13 is connected to the air intake cavity 14, enabling the gas in the air intake cavity 14 to be discharged to the external environment through the exhaust pipe 13. A gas collection groove 15 is formed on the lower side of the bottom housing cover 12. The gas collection groove 15 can collect the gas in the surrounding environment. The bottom housing cover 12 is provided with an air intake grid that connects the gas collection groove 15 with the air intake cavity 14, allowing the gas in the gas collection groove 15 to enter the air intake cavity 14.

[0077] In one embodiment, the pipe system 21 is arranged in the air intake cavity 14; the bottom housing cover 12 is provided with a first pipe passing hole, and the pipe system 21 extends downward through the first pipe passing hole to the gas collection groove 15, and the nozzle 22 is connected to the pipe system 21 in the gas collection groove 15.

[0078] The pipe system 21 is arranged in the air intake cavity 14. This layout makes full use of the internal space of the air intake cavity 14, making the structure of the entire device more compact. Moreover, the air intake cavity 14 provides a relatively stable and protected environment for the pipe system 21, reducing the risk of interference and damage to the pipe system 21 by external factors.

[0079] In one embodiment, the pipe system 21 includes a main pipe and a plurality of branch pipes connected to the main pipe. A second pipe passing hole is provided on the side wall of the upper housing seat 11. The main pipe extends into the air inlet cavity 14 through the second pipe passing hole and is connected to the branch pipes. The bottom housing cover 12 is arrayed with a plurality of the first pipe passing holes. Each branch pipe extends into the gas collecting groove 15 through the first pipe passing hole and is connected to the nozzle 22.

[0080] The pipe system 21 is composed of a main pipe and a plurality of branch pipes. The main pipe serves as the main medium transportation channel, playing the role of converging and distributing the medium. The branch pipes are responsible for further transporting the medium conveyed by the main pipe to the positions of each nozzle 22 to achieve precise distribution of the medium. Setting multiple nozzles 22 can provide a larger area of fire sprinkler extinguishing and accelerate the extinguishing efficiency.

[0081] In the description of this article, it should be understood that the orientation or positional relationships such as "upper", "lower", "left", "right", etc. are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to this application. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0082] In the description of this specification, the description with reference to terms such as "one embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0083] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard 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.

[0084] The technical principle of this application has been described above in combination with specific embodiments. These descriptions are only for explaining the principle of this application and cannot be construed as a limitation to the protection scope of this application in any way. Based on the explanations here, those skilled in the art can think of other specific embodiments of this application without creative labor, and these ways will all fall within the protection scope of this application.

Claims

1. An air collecting hood device for a cruise ship kitchen, characterized in that, Comprising: A device housing (1) with a gas collecting groove (15) formed on the bottom side; A spraying system, including a pipe system (21), a nozzle (22) and a nozzle cover assembly (23). The nozzle (22) is connected to the end of the pipe system (21), and the nozzle (22) is located within the gas collecting groove (15). The nozzle cover assembly (23) is connected to the nozzle (22). In the closed state, the nozzle cover assembly (23) can enclose the nozzle (22). In the open state of the nozzle cover assembly (23), the nozzle (22) can spray fire extinguishing water outwards.

2. The air hood device for a cruise ship kitchen according to claim 1, characterized in that, The nozzle cover assembly (23) includes a top cover plate (231) and a closed box (232). The closed cover is covered on the lower side of the top cover plate (231) to form a closed space. The nozzle (22) includes a connecting pipe portion (221) and a nozzle portion (222). The connecting pipe portion (221) is connected to the pipe system (21). The top cover plate (231) is provided with a perforation (2311), and the connecting pipe portion (221) passes through the perforation (2311) so that the nozzle portion (222) is placed within the closed box (232). Wherein, when the water storage amount in the closed box (232) reaches a set value, the closed box (232) can be separated from the top cover plate (231) and opened under the action of gravity.

3. The air hood device for a cruise ship kitchen according to claim 2, characterized in that, The nozzle cover assembly (23) further includes an elastic member (236). The elastic member (236) connects the top cover plate (231) and the closed box (232). Through the elastic restoring force of the elastic member (236), the closed box (232) is maintained in the closed state. And when the water storage amount in the closed box (232) reaches the set value, under the action of the gravity of the closed box (232), the elastic force of the elastic member (236) can be overcome to open the closed box (232).

4. The air hood device for a cruise ship kitchen according to claim 3, characterized in that, The elastic member (236) is a coil spring. The nozzle cover assembly (23) further includes a wire winding drum (234) and a lifting rope (235) wound around the wire winding drum (234). The wire winding drum (234) is connected to the coil spring. One end of the lifting rope (235) extends downwards and is connected to the closed box (232). Through the torsion of the coil spring, the wire winding drum (234) winds up the lifting rope (235), thereby keeping the closed box (232) in the closed state. As the water storage amount in the closed box (232) increases, the closed box (232) can move downwards against the elastic force of the coil spring to gradually open the closed box (232).

5. The air hood device for a cruise ship kitchen according to claim 4, wherein A coiled spring support (233) is fixedly installed on the bottom side of the top cover plate (231). The coiled spring support (233) includes a hanging plate (2331) and a support shaft (2332). The top side of the hanging plate (2331) is fixedly connected to the top cover plate (231), and one end of the support shaft (2332) is fixedly connected to the hanging plate (2331); the coiled spring is sleeved outside the support shaft (2332), and one end is clamped to the support shaft (2332); the wire winding drum (234) is sleeved outside the coiled spring and is clamped to the other end of the support shaft (2332).

6. The air hood device for a cruise ship kitchen according to claim 5, characterized in that, A threaded connection part is provided at one end of the support shaft (2332) away from the hanging plate (2331), and an end cover (237) is threadedly installed on the threaded connection part to limit the coiled spring and the wire winding drum (234) from detaching from the support shaft (2332).

7. The air collecting hood device for a cruise ship kitchen according to claim 4, characterized in that, A drain valve (238) is further provided at the bottom of the closed box (232), and the accumulated water in the closed box (232) can be discharged by opening the drain valve (238).

8. The air collecting hood device for a cruise ship kitchen according to claim 1, characterized in that, The device housing (1) includes an upper housing seat (11) and a housing bottom cover (12). The housing bottom cover (12) is installed on the bottom side of the upper housing seat (11), and an air inlet cavity (14) is formed between the upper housing seat (11) and the housing bottom cover (12). An exhaust pipe (13) communicating with the air inlet cavity (14) is connected to the top of the upper housing seat (11); a gas collecting groove (15) is formed on the lower side of the housing bottom cover (12), and the housing bottom cover (12) is provided with an air inlet grid communicating the gas collecting groove (15) with the air inlet cavity (14).

9. The air hood device for a cruise ship kitchen according to claim 8, characterized in that, The pipe system (21) is arranged in the air inlet cavity (14); the housing bottom cover (12) is provided with a first pipe passing hole, and the pipe system (21) extends downward through the first pipe passing hole to the gas collecting groove (15), and the spray head (22) is connected to the pipe system (21) in the gas collecting groove (15).

10. The air hood device for a cruise ship kitchen according to claim 9, characterized in that, The pipe system (21) includes a main pipe and a plurality of branch pipes connected to the main pipe. A second pipe passing hole is provided on the side wall of the upper housing seat (11), and the main pipe extends into the air inlet cavity (14) through the second pipe passing hole and is connected to the branch pipes; a plurality of the first pipe passing holes are arranged in an array on the housing bottom cover (12), and each branch pipe extends into the gas collecting groove (15) through the first pipe passing hole and is connected to the spray head (22).

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