Fire extinguishing device

Abstract

The utility model provides a fire extinguishing device and relates to the field of fire-fighting equipment. The fire extinguishing device comprises an atomizing nozzle assembly and an air blower; the atomizing nozzle assembly comprises a first nozzle body, a second nozzle body and a water supply pipeline; one end of the first spray head body is connected with an air blower, the other end of the first spray head body is connected with the second spray head body, and a separator is arranged in the first spray head body and divides an inner cavity of the first spray head body into a first airflow channel and a second airflow channel; the water supply pipeline is connected with the first nozzle body, and a water outlet of the water supply pipeline is located in the first airflow channel. When the fire extinguishing device is used, the second spray head body can spray a large amount of high-speed and high-pressure water mist, the spraying distance is long, a larger range can be covered, and a better fire extinguishing effect is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of fire fighting equipment especially relates to a fire extinguishing device. BACKGROUND

[0002] The city building basement usually sets up the fixed fire fighting sprinkler fire extinguishing system to deal with the new energy vehicle charging fire situation.

[0003] However, the working surface of the existing fire fighting sprinkler fire extinguishing system is fixed when working, the sprinkling area is single, and the range is small. Once the fire situation is inconsistent with the preset condition, the fire extinguishing effect is poor. CONTENT OF THE UTILITY MODEL

[0004] In order to solve the problems in the prior art, the utility model aims at providing a fire extinguishing device.

[0005] The utility model provides the following technical scheme:

[0006] A fire extinguishing device, comprising an atomizing nozzle assembly and a blower, the atomizing nozzle assembly comprises a first nozzle body, a second nozzle body and a water supply pipeline;

[0007] One end of the first nozzle body is connected with the blower, the other end of the first nozzle body is connected with the second nozzle body, a partition is arranged in the first nozzle body, and the partition divides the inner cavity of the first nozzle body to form a first airflow channel and a second airflow channel;

[0008] The water supply pipeline is connected with the first nozzle body, and the water outlet of the water supply pipeline is located in the first airflow channel.

[0009] As a further optional scheme of the fire extinguishing device, the first nozzle body and the partition are both arranged in a ring shape, the central axis of the first nozzle body coincides with the central axis of the partition, the first airflow channel is located between the inner wall of the first nozzle body and the outer wall of the partition, and the second airflow channel is located on the inner side of the partition.

[0010] As a further optional scheme of the fire extinguishing device, the partition is provided with a first expansion part at one end close to the second nozzle body, so that the flow cross section of the first airflow channel gradually decreases along the direction towards the second nozzle body.

[0011] As a further optional scheme of the fire extinguishing device, the inner wall of the first nozzle body is provided with a contraction part at one end close to the second nozzle body, so that the flow cross section of the first airflow channel gradually decreases along the direction towards the second nozzle body.

[0012] As a further optional solution to the fire extinguishing device, a second expansion portion is provided at one end of the partition away from the second nozzle body, so that the flow passage section of the second gas flow passage gradually increases in the direction away from the second nozzle body.

[0013] As a further optional solution to the fire extinguishing device, a flow guide member is arranged inside the second nozzle body, corresponding to the first gas flow passage, so that the water mist flowing out of the first gas flow passage is dispersed.

[0014] As a further optional solution to the fire extinguishing device, the flow guide member is arranged at the outlet of the first gas flow passage close to the second nozzle body, and a plurality of flow guide holes are arranged on the flow guide member, so that the water mist flowing out of the first gas flow passage flows through the plurality of flow guide holes and is dispersed.

[0015] As a further optional solution to the fire extinguishing device, the water supply pipeline comprises a main pipe and a plurality of nozzles, the main pipe is connected with the plurality of nozzles respectively, the plurality of nozzles are uniformly distributed in the first gas flow passage, and the nozzle has the water outlet.

[0016] As a further optional solution to the fire extinguishing device, the water supply pipeline further comprises a first branch pipe and a second branch pipe, at least two first branch pipes are arranged, one end of the first branch pipe is connected with the main pipe, the other end of the first branch pipe is connected with the middle part of the second branch pipe, and two ends of the second branch pipe are connected with the nozzles respectively.

[0017] As a further optional solution to the fire extinguishing device, the water outlet is arranged at one end of the nozzle close to the second nozzle body, and the water outlet is arranged in a flat manner.

[0018] The embodiments of the utility model have the following beneficial effects:

[0019] When the fire extinguishing device is used, the air blower delivers air flow to the inner cavity of the first nozzle body and flows towards the second nozzle body. A part of the air flow enters the first air flow channel, and the water delivered into the first air flow channel through the water supply pipeline is scattered and atomized, and the mixed water mist enters the inner cavity of the second nozzle body. The remaining air flow enters the second air flow channel and flows into the inner part of the second nozzle body at a faster speed, forming a negative pressure at the outlet of the first air flow channel close to the second nozzle body, and the water mist in the first air flow channel is pulled. Since the air flow delivered by the air blower has a higher pressure than that of a conventional ventilator, the amount of water delivered by the water supply pipeline can be increased, and the water delivered into the first air flow channel through the water supply pipeline can still be atomized. At the same time, the negative pressure formed at the outlet of the first air flow channel can ensure that the water mist in the first air flow channel smoothly enters the inner cavity of the second nozzle body. Therefore, the second nozzle body can spray a large amount of high-speed and high-pressure water mist, the spraying distance is long, and a larger range can be covered, and a better fire extinguishing effect is achieved.

[0020] In order to make the above-mentioned purpose, characteristics and advantages of the utility model more obvious and easy to understand, the following preferred embodiments are taken as an example, and the accompanying drawings are described in detail as follows. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments, it should be understood that the following drawings only show some embodiments of the utility model, therefore should not be regarded as the limitation to the scope, for the ordinary skilled person in the art, under the premise of not paying the creative labor, still can obtain other related drawings according to these drawings.

[0022] Figure 1 The overall structure schematic diagram of the atomizing nozzle assembly in the fire extinguishing device provided by the embodiments of the utility model is shown.

[0023] Figure 2 The internal structure schematic diagram of the atomizing nozzle assembly in the fire extinguishing device provided by the embodiments of the utility model is shown.

[0024] Figure 3 The cross-sectional schematic diagram of the atomizing nozzle assembly in the fire extinguishing device provided by the embodiments of the utility model is shown.

[0025] Figure 4 The structure schematic diagram of the water supply pipeline in the fire extinguishing device provided by the embodiments of the utility model is shown.

[0026] Main element symbol explanation:

[0027] 10 - atomizing nozzle assembly; 100 - first nozzle body; 101 - first air flow passage; 102 - second air flow passage; 110 - partition; 111 - first expansion portion; 112 - second expansion portion; 120 - contraction portion; 200 - second nozzle body; 210 - flow guide; 211 - flow guide hole; 300 - water supply conduit; 310 - main pipe; 320 - nozzle; 321 - water outlet; 330 - first branch pipe; 340 - second branch pipe. DETAILED DESCRIPTION

[0028] Embodiments of the present application are described in detail below with reference to the attached drawing figures, wherein the same or like component have the same or similar designations. The embodiments described are presented by way of example only and are not intended to limit the present application as set forth in the claims.

[0029] It is to be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. Like numbers refer to like elements throughout.

[0030] In the present application, unless otherwise clearly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0031] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the templates herein is used only for the purpose of describing particular embodiments and is not intended to be limiting of the present disclosure. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0033] Embodiments

[0034] The present embodiment provides a fire extinguishing device, in particular a fire extinguishing device with atomizing nozzles and double-head blowers, which can be applied to open or closed places for fire extinguishing, and can also be applied to construction sites for dust control, cooling and humidification.

[0035] Please refer to Figure 1 and Figure 2 The fire extinguishing device comprises an atomizing nozzle assembly 10 and a blower (not shown in the figure), and the atomizing nozzle assembly 10 comprises a first nozzle body 100, a second nozzle body 200 and a water supply pipeline 300.

[0036] The first nozzle body 100 is connected to the blower at one end, and is connected to the second nozzle body 200 at the other end. A partition 110 is arranged inside the first nozzle body 100, which divides the inner cavity of the first nozzle body 100 into a first airflow channel 101 and a second airflow channel 102.

[0037] Correspondingly, the water supply pipeline 300 is connected to the first nozzle body 100, and the water outlet 321 of the water supply pipeline 300 is located in the first airflow channel 101.

[0038] When the fire extinguishing device is used, the air blower delivers air flow to the inner cavity of the first nozzle body 100 and flows towards the second nozzle body 200. A part of the air flow enters the first air flow channel 101, and the water delivered into the first air flow channel 101 through the water supply pipeline 300 is scattered and atomized, and the mixed water mist enters the inner cavity of the second nozzle body 200. The remaining air flow enters the second air flow channel 102 and flows into the inner part of the second nozzle body 200 at a faster speed, forming a negative pressure at the outlet of the first air flow channel 101 close to the second nozzle body 200, which drags the water mist in the first air flow channel 101. Because the air flow delivered by the air blower has a higher pressure (generally 15-350 KPa) than the conventional ventilator, the amount of water delivered by the water supply pipeline 300 can be increased, and the water mist delivered into the first air flow channel 101 through the water supply pipeline 300 can still be atomized. At the same time, the negative pressure formed at the outlet of the first air flow channel 101 can ensure that the water mist in the first air flow channel 101 smoothly enters the inner cavity of the second nozzle body 200. Thus, the second nozzle body 200 can spray a large amount of high-speed and high-pressure water mist, the spraying distance is long, and it can cover a larger range and has a better fire extinguishing effect.

[0039] In some embodiments, the first nozzle body 100 and the partition 110 are both arranged in a ring shape, and the central axis of the first nozzle body 100 coincides with the central axis of the partition 110. The first air flow channel 101 is located between the inner wall of the first nozzle body 100 and the outer wall of the partition 110, and the second air flow channel 102 is located inside the partition 110.

[0040] At this time, the first air flow channel 101 surrounds the periphery of the second air flow channel 102. When part of the air flow flows into the second nozzle body 200 through the second air flow channel 102, a negative pressure is formed around, i.e. exactly at the outlet of the first air flow channel 101.

[0041] Please refer to Figure 3 Further, the partition 110 is provided with a first expansion part 111 close to one end of the second nozzle body 200, so that the flow passage section of the first air flow channel 101 gradually decreases in the direction towards the second nozzle body 200.

[0042] With the gradual decrease of the flow passage section of the first air flow channel 101, the impact of the air flow entering the first air flow channel 101 on the water is more intense, which is beneficial to the scattering of the water by the air flow and better atomization effect.

[0043] In addition, when the flow passage section of the first airflow passage 101 is reduced, the resistance of the airflow flowing in the first airflow passage 101 is greater, and thus more airflow enters the second airflow passage 102, a greater negative pressure is formed inside the second nozzle body 200, and thus the water mist in the first airflow passage 101 can be better drawn into the second nozzle body 200.

[0044] It should be noted that the flow passage section of the second airflow passage 102 inside the first expansion portion 111 does not increase with the increase of the external size of the first expansion portion 111, avoiding the decrease of the flow rate of the airflow in the second airflow passage 102 when flowing through the first expansion portion 111.

[0045] Further, the inner wall of the first nozzle body 100 is provided with a contraction portion 120 near one end of the second nozzle body 200, so that the flow passage section of the first airflow passage 101 gradually decreases in the direction towards the second nozzle body 200.

[0046] Similarly, by providing the contraction portion 120 on the inner wall of the first nozzle body 100 to reduce the flow passage section of the first airflow passage 101, the atomization effect can also be improved, and the water mist can be better drawn into the second nozzle body 200.

[0047] Further, the second expansion portion 112 is provided at one end of the partition 110 away from the second nozzle body 200, so that the flow passage section of the second airflow passage 102 gradually increases in the direction away from the second nozzle body 200.

[0048] It can be understood that since the water outlet 321 of the water supply pipeline 300 is located in the first airflow passage 101, the size of the partition 110 is limited by the peripheral water supply pipeline 300. At this time, the middle part of the partition 110 is aligned with the water supply pipeline 300, and the second expansion portion 112 is provided at one end of the partition 110 away from the second nozzle body 200, which can avoid the water supply pipeline 300 and increase the flow passage section at the inlet of the second airflow passage 102, so that more airflow enters the second airflow passage 102, a greater negative pressure is formed inside the second nozzle body 200, and thus the water mist in the first airflow passage 101 can be better drawn into the second nozzle body 200.

[0049] In some embodiments, the second nozzle body 200 is arranged in a ring shape, the central axis of the second nozzle body 200 coincides with the central axis of the first nozzle body 100, and one end of the second nozzle body 200 away from the first nozzle body 100 is inwardly folded, so that the water mist sprayed from the second nozzle body 200 has a faster flow rate and a greater pressure.

[0050] It can be understood that the water mist flowing into the second nozzle body 200 through the first airflow channel 101 is further mixed with the airflow flowing into the second nozzle body 200 through the second airflow channel 102 in the second nozzle body 200, and then sprayed out of the second nozzle body 200 from the end away from the first nozzle body 100.

[0051] Further, the second nozzle body 200 is internally provided with a flow guide 210. The flow guide 210 is arranged corresponding to the first airflow channel 101 to disperse the water mist flowing out of the first airflow channel 101.

[0052] The water mist flowing into the second nozzle body 200 through the first airflow channel 101 is dispersed after contacting the flow guide 210, and can be more fully contacted with the airflow flowing into the second nozzle body 200 through the second airflow channel 102, the mixing effect is better, and then sprayed out of the second nozzle body 200 at a faster speed driven by the airflow.

[0053] In the embodiment, the flow guide 210 is arranged at the outlet of the first airflow channel 101 close to the second nozzle body 200, and a plurality of flow guide holes 211 are arranged on the flow guide 210 to disperse the water mist flowing out of the first airflow channel 101 through the plurality of flow guide holes 211.

[0054] Specifically, the partition 110 extends to the inside of the second nozzle body 200 at the end close to the second nozzle body 200, and the flow guide 210 surrounds the end of the partition 110 and covers the outlet of the first airflow channel 101. The water mist flows into the inside of the flow guide 210 through the first airflow channel 101, then passes through each flow guide hole 211 on the flow guide 210, and then mixes with the airflow flowing into the second nozzle body 200 through the second airflow channel 102.

[0055] Please refer to Figure 4 In some embodiments, the water supply pipeline 300 includes a main pipe 310 and a plurality of nozzles 320, and the main pipe 310 is connected with the plurality of nozzles 320 respectively. The plurality of nozzles 320 are uniformly distributed in the first airflow channel 101, and the nozzle 320 has a water outlet 321.

[0056] In use, the main pipe 310 is connected with an external water source (such as a fire hydrant, etc.). The water in the external water source flows into each nozzle 320 through the main pipe 310, and then is sprayed out through the water outlet 321 of the nozzle 320. Since the plurality of nozzles 320 are uniformly distributed in the first airflow channel 101, the water sprayed out through the nozzle 320 can be uniformly mixed with the airflow in the first airflow channel 101 to form water mist.

[0057] It can be understood that, for water source tension or no hydrant and other special environment, the water supply pipe 300 can also be connected with the tap water pipe, and tap water is used for fire extinguishing work.

[0058] Further, the water supply pipe 300 further comprises a first branch pipe 330 and a second branch pipe 340. The first branch pipe 330 is provided with at least two, one end of the first branch pipe 330 is connected with the main pipe 310, and the other end of the first branch pipe 330 is connected with the middle part of the second branch pipe 340. Two ends of the second branch pipe 340 are respectively connected with the nozzles 320.

[0059] At this time, the distance between the main pipe 310 close to one end of the first branch pipe 330 and each nozzle 320 is equal, which is beneficial to keeping the water quantity sprayed by each nozzle 320 consistent, so that the water sprayed through the nozzle 320 is more uniformly mixed with the airflow in the first airflow channel 101 to form water mist.

[0060] Further, the water outlet 321 is located at one end of the nozzle 320 close to the second nozzle body 200, and the water outlet 321 is flatly arranged.

[0061] On the one hand, the water in the nozzle 320 is sprayed towards the second nozzle body 200 with a certain initial flow rate, and after being mixed with the airflow to form water mist, the water can flow more quickly towards the second nozzle body 200. On the other hand, the water sprayed from the flat water outlet 321 has more contact surface with the airflow, and the airflow can better disperse and atomize the water.

[0062] In some embodiments, the air blower adopts a double-head blower, which comprises a motor, an impeller and a volute.

[0063] Among them, the shaft of the motor extends from both ends of the motor to form two driving ends. Correspondingly, the impeller and the volute are provided with two groups. Two impellers are respectively connected with the corresponding driving ends, and the air outlets of the two volutes are respectively connected with the first nozzle body 100 through the pipeline.

[0064] As described above, the pressure of the airflow delivered by the air blower is higher than that of the conventional ventilator, which can ensure that the water delivered through the water supply pipe 300 is atomized in the first airflow channel 101, that is, the pressure of the airflow delivered by the air blower meets the demand of atomization. On this basis, the air blower adopts a double-head design, which can increase the air volume under the condition that the air pressure remains unchanged, atomize more water, and thus spray more water mist from the second nozzle body 200.

[0065] In summary, the fire extinguishing device can use the wind pressure of about 10-30 KPa and large wind volume generated when the air blower works to atomize the tap water or other water source into high-speed high-pressure water mist in the form of droplets and spray it to the surroundings of the fire source to reduce the air temperature around the fire source and reduce the flow of high-temperature gas. In combination with the high-speed flow of high-speed atomized gas, the smoke and harmful gas in the limited activity space can also be wrapped and removed to achieve the effect of purifying the air.

[0066] When used in open places, the same effect as the traditional fire water gun can be achieved, and the effective spraying distance can reach 10-20 m. The effect is better when used in closed places, for example, the atomizing nozzle assembly 10 is pre-installed in the area where the charging pile is installed in the basement, and the smoke sensing automatic starting and manual control starting mode is adopted. Once a dangerous situation occurs, a large amount of flowing water mist is directed to the fire point, which can control the development of the dangerous situation in a short time, and can also eliminate a large amount of smoke when on fire, and can also try to avoid the impact loss of property caused by using a high-pressure water gun for daily fire extinguishing.

[0067] In addition, the fire extinguishing device can also be applied to unattended places in combination with an infrared alarm device or a wireless communication device. For example, when used at home, if there is no one at home or the elderly and children are not convenient to use when a dangerous situation occurs, the infrared alarm function can be used to automatically start the fire extinguishing function, or the APP alarm reminder function can be used to start the fire extinguishing function, which is convenient and practical.

[0068] In all the examples shown and described herein, any specific values should be interpreted as merely exemplary and not as a limitation, and thus, other examples of the example embodiments can have different values.

[0069] It should be noted that similar reference numbers and letters represent similar items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0070] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the protection scope of the present application.

Claims

1. A fire extinguishing apparatus, characterized by, The atomizing nozzle assembly comprises a first nozzle body, a second nozzle body and a water supply pipeline; One end of the first nozzle body is connected with the air blower, the other end of the first nozzle body is connected with the second nozzle body, and the inside of the first nozzle body is provided with a partition piece which divides the inner cavity of the first nozzle body into a first airflow channel and a second airflow channel; The water supply pipeline is connected with the first nozzle body, and the water outlet of the water supply pipeline is located in the first airflow channel.

2. The fire extinguishing device according to claim 1, characterized in that The first nozzle body and the partition piece are both annularly arranged, the central axis of the first nozzle body coincides with the central axis of the partition piece, the first airflow channel is located between the inner wall of the first nozzle body and the outer wall of the partition piece, and the second airflow channel is located inside the partition piece.

3. The fire extinguishing device of claim 2, wherein The partition piece is provided with a first expansion part at one end close to the second nozzle body, so that the flow cross section of the first airflow channel gradually decreases in the direction towards the second nozzle body.

4. The fire extinguishing device of claim 2, wherein The inner wall of the first nozzle body is provided with a contraction part at one end close to the second nozzle body, so that the flow cross section of the first airflow channel gradually decreases in the direction towards the second nozzle body.

5. The fire extinguishing device of claim 2, wherein The partition piece is provided with a second expansion part at one end away from the second nozzle body, so that the flow cross section of the second airflow channel gradually increases in the direction away from the second nozzle body.

6. The fire extinguishing device according to any one of claims 1-5, characterized in that The inside of the second nozzle body is provided with a flow guide piece corresponding to the first airflow channel, so that the water mist flowing out of the first airflow channel is dispersed.

7. The fire extinguishing device of claim 6, wherein The flow guide piece is arranged at the outlet of the first airflow channel close to the second nozzle body, and a plurality of flow guide holes are arranged on the flow guide piece, so that the water mist flowing out of the first airflow channel is dispersed after flowing through the plurality of flow guide holes.

8. The fire extinguishing device according to any one of claims 1-5, characterized in that The water supply pipeline comprises a main pipe and a plurality of nozzles, the main pipe is connected with the plurality of nozzles respectively, the plurality of nozzles are uniformly distributed in the first airflow channel, and the nozzles have the water outlets.

9. The fire extinguishing device of claim 8, wherein The water supply pipeline further comprises a first branch pipe and a second branch pipe, at least two first branch pipes are arranged, one end of the first branch pipe is connected with the main pipe, the other end of the first branch pipe is connected with the middle part of the second branch pipe, and the two ends of the second branch pipe are respectively connected with the nozzles.

10. The fire extinguishing device of claim 8, wherein The water outlet is located at one end of the nozzle close to the second nozzle body, and the water outlet is flatly arranged.

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