Water mist fire extinguishing device with high efficiency of cooling and smoke reduction

Abstract

The utility model discloses a kind of fine water mist fire extinguishing devices of high efficiency cooling and reducing smoke, it is related to fire extinguishing equipment technical field, including water supply pipe, two-stage atomization nozzle, smoke-temperature sensing module, at least one two-stage atomization nozzle is connected with water supply pipe, two-stage atomization nozzle includes bottom cooling nozzle and lateral smoke-reducing nozzle, its inside is equipped with first water supply passage and second water supply passage, first water supply passage is located in the middle of second water supply passage and is connected with bottom cooling nozzle, second water supply passage is connected with lateral smoke-reducing nozzle.The device is designed by the double nozzle and double water supply passage of two-stage atomization nozzle, so that bottom cooling nozzle and lateral smoke-reducing nozzle can be respectively targeted to realize efficient cooling and smoke reduction, solve the problem that single particle size droplet in existing fine water mist fire extinguishing device cannot simultaneously efficiently meet cooling and smoke reduction demand, while combining smoke-temperature sensing module, improve the accuracy of device response, applicable to the place needing efficient fire extinguishing and paying attention to cooling and smoke reduction.

Description

Technical Field

[0001] This utility model relates to the field of fine water mist fire extinguishing technology, and in particular to a high-efficiency fine water mist fire extinguishing device for cooling and reducing smoke. Background Technology

[0002] In existing technologies, fine water mist fire extinguishing devices, as a highly efficient and environmentally friendly fire suppression system, are widely used in archives, data centers, power distribution rooms, industrial plants, and other locations. They typically consist of a water supply system (such as pump sets and water tanks), a pipeline network, atomizing nozzles, and a control unit. Water is pressurized and broken up by the nozzles into fine water mist with diameters ranging from 10-100 μm. The mist utilizes the heat absorption during vaporization to cool the water, block oxygen, and suffocate the fire. It also aids in smoke reduction by adsorbing smoke particles. Depending on the application scenario, fine water mist devices can be classified as open systems or closed systems. The nozzles are mostly single-atomization structures, and the droplet size is controlled by adjusting the water supply pressure or nozzle orifice diameter to adapt to the fire suppression needs of different fire scenarios.

[0003] However, existing fine water mist fire suppression devices still have significant technical limitations in practical applications. On the one hand, traditional nozzles mostly use a single-diameter droplet design. If the droplet size is too large (e.g., 50-100μm), although it can quickly act on the fire source to achieve cooling, it is insufficient in capturing fine particles (below 10μm) in the smoke, resulting in limited smoke reduction. If the droplet size is too small (e.g., 10-30μm), although it is beneficial for adsorbing smoke particles, the cooling speed is slowed down due to low heat absorption efficiency, making it difficult to achieve synergistic effects of cooling and smoke reduction. On the other hand, the sensing and control mechanisms of existing devices have shortcomings. Most rely on a single temperature or flame detection signal for triggering, making it impossible to monitor the dynamic correlation between smoke concentration and temperature in real time. It is difficult to accurately identify high-risk points in the fire area (such as smoke accumulation areas or high-temperature core areas), often resulting in indiscriminate spraying of fine water mist, which not only wastes water resources but may also affect fire suppression efficiency due to insufficient local droplet coverage. Utility Model Content

[0004] The main objective of this invention is to provide a highly efficient fine water mist fire extinguishing device for cooling and reducing smoke.

[0005] To achieve the above objectives, this utility model proposes a high-efficiency cooling and smoke-reducing fine water mist fire extinguishing device, including a water supply pipe, a dual-stage atomizing nozzle, and a smoke-temperature sensing module. At least one of the dual-stage atomizing nozzles is connected to the water supply pipe. The dual-stage atomizing nozzle includes a bottom cooling nozzle and a side smoke-reducing nozzle. The dual-stage atomizing nozzle has a first water supply channel and a second water supply channel inside. The first water supply channel is located in the middle of the second water supply channel. The first water supply channel is connected to the bottom cooling nozzle, and the second water supply channel is connected to the side smoke-reducing nozzle.

[0006] In one possible implementation, the bottom cooling nozzle adopts the high-pressure impact principle, and the lower end of the bottom cooling nozzle is provided with an impact needle, which is fixedly connected to the dual-stage atomizing nozzle.

[0007] In one possible implementation, the lateral smoke-reducing nozzle is a fan-shaped orifice, and the second water supply channel is provided with inclined guide vanes.

[0008] In one possible implementation, the water supply pipe is fixedly connected to an annular bracket, the dual-stage atomizing nozzle is located in the middle of the annular bracket, and the smoke-temperature sensing module is fixedly connected to the annular bracket.

[0009] In one possible implementation, the smoke-temperature sensing module includes a smoke sensor and a temperature sensor, which are located on opposite sides of the dual-stage atomizing nozzle. The smoke sensor and temperature sensor are positioned above the dual-stage atomizing nozzle and are both fixedly connected to a ring-shaped bracket.

[0010] The working principle and beneficial effects of this utility model are as follows:

[0011] This utility model's technical solution utilizes a dual-stage atomizing nozzle, comprising a bottom cooling nozzle and a side smoke-reducing nozzle. Internally, it includes a first water supply channel and a second water supply channel connecting the two (the first water supply channel is located in the middle of the second water supply channel). This allows the bottom cooling nozzle to selectively spray droplets for efficient cooling, and the side smoke-reducing nozzle to selectively spray droplets for efficient smoke reduction, solving the problem that existing single-diameter droplets cannot simultaneously and efficiently meet both cooling and smoke reduction needs. Furthermore, by incorporating a smoke-temperature sensing module, it enables real-time detection of smoke concentration and temperature in the fire extinguishing area, providing precise data for the operation of the dual-stage atomizing nozzle. This helps address the shortcomings of existing devices, such as inaccurate location of high-risk areas and insufficient localized effectiveness due to their single sensing mechanism and delayed response. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0015] Figure 3 This is a schematic diagram of the structure of the dual-stage atomizing nozzle in this utility model;

[0016] Figure 4 This is a front view of the dual-stage atomizing nozzle in this utility model.

[0017] The following are the symbols and their meanings: 1. Water supply pipe; 2. Two-stage atomizing nozzle; 3. Ring support; 21. Bottom cooling nozzle; 22. Side smoke reduction nozzle; 23. First water supply channel; 24. Second water supply channel; 25. Impact pin; 26. Fan-shaped orifice; 27. Guide vane; 31. Smoke sensor; 32. Temperature sensor.

[0018] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0020] like Figures 1-4 As shown in the figure, this embodiment proposes a high-efficiency cooling and smoke-reducing fine water mist fire extinguishing device, including a water supply pipe 1, a dual-stage atomizing nozzle 2, and a smoke-temperature sensing module. At least one dual-stage atomizing nozzle 2 is connected to the water supply pipe 1. The dual-stage atomizing nozzle 2 includes a bottom cooling nozzle 21 and a side smoke-reducing nozzle 22. The dual-stage atomizing nozzle 2 has a first water supply channel 23 and a second water supply channel 24 inside. The first water supply channel 23 is located in the middle of the second water supply channel 24. The first water supply channel 23 is connected to the bottom cooling nozzle 21, and the second water supply channel 24 is connected to the side smoke-reducing nozzle 22.

[0021] Water supply pipe 1 connects the water source to the dual-stage atomizing nozzle 2, providing fire-fighting water for the device and ensuring a stable water supply for fine water mist spraying. The dual-stage atomizing nozzle 2 integrates a bottom cooling nozzle 21 and a side smoke-reducing nozzle 22, supplying water through internal dual channels to achieve efficient synergistic operation of cooling and smoke reduction functions. The bottom cooling nozzle 21 receives water flow through the first water supply channel 23 and sprays downwards, directly acting on the fire source area for rapid cooling and improved fire-fighting efficiency. The side smoke-reducing nozzle 22 receives water flow through the second water supply channel 24 and sprays sideways, more precisely covering the smoke diffusion area and enhancing smoke reduction. The first water supply channel 23 is located in the middle of the second water supply channel 24 and connects to the bottom cooling nozzle 21, independently supplying water for cooling and ensuring stable water pressure and flow rate at the bottom nozzle. The second water supply channel 24 surrounds the first water supply channel 23 and connects to the side smoke-reducing nozzle 22, separately supplying water for smoke reduction and ensuring the atomization effect and coverage range of the side nozzle. The smoke-temperature sensing module detects the smoke concentration and temperature in the fire extinguishing area in real time, providing data support for the operation adjustment of the dual-stage atomizing nozzle 2 and improving the accuracy of the device's response.

[0022] In this embodiment, the bottom cooling nozzle 21 adopts the high-pressure impact principle, and the lower end of the bottom cooling nozzle 21 is provided with an impact needle 25, which is fixedly connected to the dual-stage atomizing nozzle 2. The lateral smoke reduction nozzle 22 is a fan-shaped small hole 26, and the second water supply channel 24 is provided with inclined guide vanes 27.

[0023] The bottom cooling nozzle 21 employs a high-pressure impact principle. An impact pin 25, fixedly connected to the dual-stage atomizing nozzle 2 at its lower end, causes the high-pressure water flow to impact and break into large-diameter droplets, enhancing its direct cooling capability against the fire source. The impact pin 25, fixedly connected to the dual-stage atomizing nozzle 2, provides a stable force point for the high-pressure impact of the bottom cooling nozzle 21, ensuring consistent water flow impact and breaking effect. The side smoke-reducing nozzle 22 is designed with fan-shaped orifices 26, expanding the lateral coverage range of the ultra-fine droplets and improving the overall capture efficiency of the smoke diffusion area. The second water supply channel 24 contains inclined guide vanes 27, which guide the water flow to generate centrifugal force, causing the side smoke-reducing nozzle 22 to spray even finer droplets, further enhancing the smoke reduction effect.

[0024] In this embodiment, the water supply pipe 1 is fixedly connected to an annular bracket 3, the dual-stage atomizing nozzle 2 is located in the middle of the annular bracket 3, and the smoke-temperature sensing module is fixedly connected to the annular bracket 3. The smoke-temperature sensing module includes a smoke sensor 31 and a temperature sensor 32, which are located on both sides of the dual-stage atomizing nozzle 2. The smoke sensor 31 and the temperature sensor 32 are higher than the dual-stage atomizing nozzle 2, and both the smoke sensor 31 and the temperature sensor 32 are fixedly connected to the annular bracket 3.

[0025] The annular bracket 3, fixedly connected to the water supply pipe 1, provides an installation platform for the dual-stage atomizing nozzle 2 and the smoke-temperature sensing module, enhancing the overall structural stability of the device. The annular bracket 3 should not be connected to the water supply pipe 1, and water from the water supply pipe 1 should not enter the annular bracket 3. The annular bracket 3 is solely for supporting the smoke-temperature sensing module, providing its installation location. The dual-stage atomizing nozzle 2 is located in the middle of the annular bracket 3, ensuring the spray range is not obstructed by the bracket and guaranteeing effective cooling and smoke reduction coverage. The smoke-temperature sensing module is fixedly connected to the annular bracket 3, achieving positional matching with the dual-stage atomizing nozzle 2 and ensuring the correspondence between detection data and the effective area. The smoke sensor 31 is located on one side of the dual-stage atomizing nozzle 2 at a higher height, allowing for more accurate capture of rising smoke signals and improved smoke detection timeliness. The temperature sensor 32 is located on the other side of the dual-stage atomizing nozzle 2 at a higher height, enabling more sensitive detection of temperature changes above the fire source and enhancing the accuracy of temperature monitoring.

[0026] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this application and simplifying the description, 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. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0027] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A highly efficient water mist fire extinguishing device for cooling and reducing smoke, characterized in that, The device includes a water supply pipe (1), a dual-stage atomizing nozzle (2), and a smoke-temperature sensing module. At least one of the dual-stage atomizing nozzles (2) is connected to the water supply pipe (1). The dual-stage atomizing nozzle (2) includes a bottom cooling nozzle (21) and a side smoke-reducing nozzle (22). The dual-stage atomizing nozzle (2) has a first water supply channel (23) and a second water supply channel (24) inside. The first water supply channel (23) is located in the middle of the second water supply channel (24). The first water supply channel (23) is connected to the bottom cooling nozzle (21), and the second water supply channel (24) is connected to the side smoke-reducing nozzle (22).

2. The high-efficiency cooling and smoke-reducing fine water mist fire extinguishing device according to claim 1, characterized in that, The bottom cooling nozzle (21) adopts the high-pressure impact principle. The bottom cooling nozzle (21) is provided with an impact needle (25) at the lower end. The impact needle (25) is fixedly connected to the dual-stage atomizing nozzle (2).

3. A high-efficiency cooling and smoke-reducing fine water mist fire extinguishing device according to claim 1 or 2, characterized in that, The lateral smoke-reducing nozzle (22) is a fan-shaped small hole (26), and the second water supply channel (24) is provided with inclined guide vanes (27).

4. The high-efficiency cooling and smoke-reducing fine water mist fire extinguishing device according to claim 1, characterized in that, The water supply pipe (1) is fixedly connected to an annular bracket (3), the dual-stage atomizing nozzle (2) is located in the middle of the annular bracket (3), and the smoke-temperature sensing module is fixedly connected to the annular bracket (3).

5. The high-efficiency cooling and smoke-reducing fine water mist fire extinguishing device according to claim 4, characterized in that, The smoke-temperature sensing module includes a smoke sensor (31) and a temperature sensor (32). The smoke sensor (31) and the temperature sensor (32) are located on both sides of the dual-stage atomizing nozzle (2). The smoke sensor (31) and the temperature sensor (32) are higher than the dual-stage atomizing nozzle (2). The smoke sensor (31) and the temperature sensor (32) are both fixedly connected to the ring bracket (3).

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