Novel environment-friendly lithium battery pneumatic extinguisher

Abstract

The utility model discloses a novel environment-friendly lithium battery pneumatic extinguisher, which relates to the technical field of fire fighting equipment and comprises a casing, one end of the casing is an air inlet, and the other end of the casing is an air outlet. Fixed fan blades, rotary fan blades and a driving mechanism for driving the rotary fan blades to rotate are arranged in the machine shell, the fixed fan blades and the driving mechanism are fixedly arranged on the inner wall of the machine shell, and the output end of the driving mechanism is fixedly connected with the rotary fan blades. The rotary fan blades are located at the position, away from the air outlet, behind the fixed fan blades. The fixed fan blades and the rotating fan blades which are matched with each other are arranged in the machine shell to form an efficient air blowing source, the rotating fan blades rotating at a high speed introduce airflow from the air inlet to generate high-speed wind power, then the high-speed wind power flows through the fixed fan blades to further enhance the wind speed, and the high-speed wind power flows out from the air outlet after having enough initial speed. The cooperation of the two greatly enhances wind speed and improves wind energy efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of fire-fighting equipment, in particular to a novel environmentally friendly lithium-powered wind-powered fire extinguisher. Background Art

[0002] At present, the fire extinguishers available on the market include: water-based fire extinguishers, dry powder fire extinguishers, foam fire extinguishers, and hydrofluorocarbon gas fire extinguishers. These traditional fire extinguishers all use chemical methods, that is, chemical fire extinguishing agents, to cool down the burning objects or isolate the air to achieve the purpose of extinguishing the fire.

[0003] After the May 6 fire in 1987, wind-powered fire extinguishers gradually became a very important fire-fighting device for forest fires in my country, and one of the main fire-fighting devices equipped by professional fire-fighting teams. The basic function of wind-powered fire extinguishers is to extinguish fires with wind. Its working principle is to use high-speed forced airflow to blow away the flames and heat generated by the burning materials, so that the wind speed at the air duct outlet reaches the critical fire-fighting wind speed of 22m / s and the air volume is not less than 0.4m 3 / s (national standard GB / T10280-2008), using airflow to separate the flame from the burning material and destroy the conditions for its continued combustion until the surface temperature of the burning material drops below the ignition point, thus achieving the purpose of extinguishing the fire.

[0004] Traditional forestry wind-powered fire extinguishers use two-stroke gasoline engines as power sources to drive the impeller to rotate at high speed, which cannot be integrated or electrified, and is difficult to promote and apply widely. At present, there are also many wind-powered fire extinguishers that use electricity as a power source, such as the utility model patent with the patent name "A portable electric axial flow wind-powered fire extinguisher" and the application number "201621165609.5", which includes a conical wind tube, a fan assembly housing, an axial flow fan assembly, a carrying handle, a motor switch, a motor, a DC power supply, and a control line; the fan assembly housing wraps the axial flow fan assembly, and the conical wind tube is connected to the fan assembly housing in a detachable manner; the carrying handle is hollow and located at the top of the fan assembly housing, and the inner side of the handle includes a power switch, and the connection line between the power switch and the DC power supply is placed in the hollow inner cavity of the carrying handle. The utility model facilitates the carrying and use of the axial flow fan by adding a portable handle. The opening and closing of the entire device is controlled by the switch on the handle. The hollow design of the handle takes into account wiring and reduces the overall weight, making the device more convenient to carry and saving production costs. Another example is the invention patent with the patent name "An environmentally friendly lithium-ion axial flow fire extinguisher and its use method" and the application number "202111094228.8", which includes a casing, a connecting shell is provided on the left side of the casing, a connecting head is provided on the left side of the connecting shell, an installation cavity is provided in the inner cavity of the casing, an output cavity is provided in the inner cavity of the connecting shell, a power supply mounting seat is provided in the inner cavity of the mounting cavity, and lithium batteries are evenly distributed on the surface of the power supply mounting seat, a motor is provided on the left side of the power supply mounting seat, and a turbofan wheel is provided on the left side of the motor, and the turbofan wheel is located in the inner cavity of the output cavity. The invention adopts a physical method to generate high wind speed and large air volume to separate the combustible material from the fire to achieve the purpose of fire extinguishing. Compared with the existing chemical fire extinguishing method, it can be recycled many times, is more environmentally friendly and safe, has better fire extinguishing effect, is smaller in size, is more convenient to carry, and is simple to use and easy to maintain.

[0005] However, the above-mentioned prior art uses electricity to drive the turbofan wheel or even the multi-stage impeller to rotate at high speed to generate airflow that reaches the critical fire extinguishing wind speed, which consumes a huge amount of electricity and also makes the working time of the portable wind-powered fire extinguisher short. Therefore, how to efficiently generate strong winds while saving energy has become an urgent problem to be solved. Utility Model Content

[0006] The purpose of the utility model is to provide a new type of environmentally friendly lithium-powered wind-powered fire extinguisher to solve the problems existing in the above-mentioned prior art, which can efficiently generate strong winds while saving energy, reduce power consumption, and increase the working duration of the portable wind-powered fire extinguisher.

[0007] To achieve the above purpose, the utility model provides the following solutions:

[0008] A novel environmentally friendly lithium-powered wind-powered fire extinguisher comprises a casing, one end of which is an air inlet and the other end is an air outlet; fixed blades, rotating blades and a driving mechanism for driving the rotating blades to rotate are arranged in the casing, the fixed blades and the driving mechanism are fixedly arranged on the inner wall of the casing, and the fixed blades are distributed at intervals along the inner circumference of the casing; the output end of the driving mechanism is fixedly connected to the rotating blades, and the rotating blades are located behind the fixed blades and away from the air outlet.

[0009] Preferably, the fixed blades are fixedly arranged on the inner wall of the casing via a fixed tube, the outer periphery of the fixed tube is fixedly connected to the inner wall of the casing, and the fixed blades are evenly arranged on the inner wall of the fixed tube along the circumferential direction.

[0010] Preferably, a driving bracket is further provided inside the fixed cylinder, one end of the fixed fan blade is connected to the inner wall of the fixed cylinder, and the other end is connected to the outer wall of the driving bracket, and the driving mechanism is fixedly provided on the driving bracket.

[0011] Preferably, it also includes a deflector, which is arranged in front of the fixed fan blades and close to the air outlet, and the deflector is coaxially arranged with the casing and the air outlet.

[0012] Preferably, the front end of the air guide cover is a conical cylinder structure.

[0013] Preferably, it further comprises a nozzle, and the nozzle is fixedly sleeved on the air outlet end of the casing.

[0014] Preferably, the nozzle comprises a connecting end and an outlet end, and a diameter of the outlet end is smaller than a diameter of the connecting end.

[0015] Preferably, a protective net is provided at the air inlet.

[0016] Preferably, a handle is provided on the outer wall of the housing.

[0017] Preferably, a lithium battery pack is provided at the tail of the handle, a power switch and a speed regulating switch are provided on the handle, and the lithium battery pack is electrically connected to the driving mechanism, the power switch and the speed regulating switch.

[0018] Compared with the prior art, the utility model has achieved the following technical effects:

[0019] By setting fixed blades and rotating blades that cooperate with each other in the casing to form an efficient blast source, the high-speed rotating blades will introduce airflow from the air inlet when they rotate, and first flow through the rotating blades to initially enhance the wind speed, generating high-speed wind force, the size of which is proportional to the number of blades; then flow through the fixed blades, which reduce the area of ​​the airflow flow channel. Under the premise that the rotating blades continuously supply air and the wind pressure remains stable, the total air volume per unit time remains unchanged, and the circulation area is reduced, which will increase the flow rate, thereby achieving further enhancement of the wind speed, so that the airflow has sufficient initial velocity and flows out of the air outlet. The combination of fixed blades and rotating blades can greatly enhance the wind speed and improve wind energy efficiency.

[0020] Other technical solutions disclosed in the utility model also have the following technical advantages:

[0021] By arranging the drive bracket inside the fixed cylinder, the fixed cylinder as a whole serves as both a fixed structure for fixing the fan blades and a mounting bracket for the drive mechanism, making full use of the limited space in the casing, making the internal structure of the machine very compact, and effectively reducing the volume of the entire machine, making the equipment more compact and portable.

[0022] By setting up a deflector, the direction of the axial wind formed by the rotating fan blades can be effectively controlled, forming a high-efficiency wind gathering system, weakening the vortex wind in the casing, ensuring that the axial wind flows out quickly along the axial direction to the air outlet for ejection, and maximizing the wind efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0024] Figure 1 It is a schematic diagram of the structure of the utility model;

[0025] Figure 2 for Figure 1 A schematic diagram of the structure of the rotating fan blades;

[0026] Figure 3 for Figure 2 Left view of

[0027] Figure 4 for Figure 1 A schematic diagram of the structure of the middle fixed cylinder;

[0028] Figure 5 for Figure 4 Left view of

[0029] Figure 6 for Figure 1 Schematic diagram of the structure of the middle fairing;

[0030] Figure 7 for Figure 6 Left view of

[0031] Figure 8 for Figure 1 Schematic diagram of the structure of the middle nozzle;

[0032] Fig. 9 for Figure 1 Schematic diagram of the structure of the middle protection net;

[0033] Among them, 1. nozzle; 2. air deflector; 3. driving mechanism; 4. power switch; 5. speed control switch; 6. fixed fan blades; 7. rotating fan blades; 8. lithium battery pack; 9. protective net; 10. casing; 11. fixed cylinder; 12. driving bracket. DETAILED DESCRIPTION

[0034] The following will combine the drawings and specific implementation methods in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] Please refer to Figures 1 to 9 This embodiment provides a new environmentally friendly lithium-powered wind-powered fire extinguisher, including a housing 10. The housing 10 is made of a material that meets the requirements of strength and light weight, preferably ABS plastic, and is made by injection molding to meet the waterproof, dustproof and drop-proof requirements of industry standards. One end of the housing 10 is an air inlet, and the other end is an air outlet. The relative positions of the air inlet and the air outlet can be specifically set according to actual conditions, preferably relatively coaxially, so as to minimize wind loss and energy consumption.

[0036] The housing 10 is provided with fixed blades 6, rotating blades 7 and a driving mechanism 3 for driving the rotating blades 7 to rotate. The driving mechanism 3 can be various motors in the prior art, preferably a high-speed DC motor. The fixed blades 6 and the driving mechanism 3 are fixedly arranged on the inner wall of the housing 10, and the fixed blades 6 are distributed at intervals along the inner circumference of the housing 10. The output end of the driving mechanism 3 is fixedly connected to the rotating blades 7, and the rotating blades 7 are driven to rotate by the driving mechanism 3. The rotating blades 7 are located behind the fixed blades 6 and away from the air outlet. In this way, the rotating blades 7 are closer to the air inlet and the fixed blades 6 are closer to the air outlet. The fixed blades 6 and the rotating blades 7 form an efficient blast source. When the rotating blades 7 rotate at high speed, the airflow is introduced from the air inlet, first flows through the rotating blades 7 to initially enhance the wind speed, and generates high-speed wind force, the magnitude of which is proportional to the number of blades; then flows through the fixed blades 6 to further enhance the wind speed. The fixed blades 6 reduce the area of ​​the airflow flow channel. Under the premise that the rotating blades 7 continuously supply air and the wind pressure remains stable, the total air volume per unit time remains unchanged, and the circulation area is reduced, which will increase the flow rate, thereby achieving further enhancement of the wind speed, so that the airflow has a sufficient initial velocity and flows out from the air outlet. The cooperation between the fixed blades 6 and the rotating blades 7 can greatly enhance the wind speed and improve the wind energy efficiency.

[0037] For details, please refer to Figure 1 , 4 5. The fixed fan blades 6 are fixedly arranged in the casing 10 through the fixing tube 11. The outer periphery of the fixing tube 11 is fixedly connected to the inner wall of the casing 10 by any existing feasible means such as snap connection and screw connection. The fixed fan blades 6 are evenly arranged on the inner wall of the fixing tube 11 along the circumferential direction. They can be formed as one piece or installed by assembly. The assembly method is preferred to facilitate subsequent cleaning, repair, replacement and other maintenance.

[0038] A driving bracket 12 is also provided inside the fixed cylinder 11, and one end of the fixed blade 6 is connected to the inside of the fixed cylinder 11, and the other end is connected to the outer wall of the driving bracket 12, which can also be integrally formed or assembled. The driving bracket 12 is provided with a corresponding mounting hole, and the driving mechanism 3 is mounted on the mounting hole of the driving bracket 12 by a fastener. The output end of the driving mechanism 3 passes through and extends out of the driving bracket 12, and is fixedly connected to the rotating blade 7. The output end of the driving mechanism 3 can be connected to the rotating blade 7 in any existing feasible manner, for example, an axial hole with a limiting plane is provided at the central axis of the rotating blade 7, and the output end of the driving mechanism 3 is matched with the axial hole, and is fixed by a top screw after being inserted into the axial hole. By arranging the driving bracket 12 inside the fixed cylinder 11, the fixed cylinder 11 as a whole is used as a fixed structure for fixing the blade 6, and at the same time becomes a mounting bracket for the driving mechanism 3, making full use of the limited space in the casing 10, making the internal structure of the machine very compact, and effectively reducing the volume of the whole machine, making the device more compact and portable.

[0039] Please refer to Figure 1 , 6 7. In order to further increase the wind speed in the casing 10, a deflector 2 is also provided inside the casing 10. The deflector 2 is arranged in front of the fixed blades 6 and near the air outlet, and is fixed by any existing feasible method such as screw connection or clamping. The deflector 2 is coaxially arranged with the casing 10 and the air outlet, and the front end of the deflector 2 is a conical cylinder structure. The deflector 2 can effectively control the wind direction of the axial flow formed by the rotating blades 7, form an efficient wind gathering system, weaken the vortex wind in the casing 10, and ensure that the axial flow wind flows out quickly along the axial direction to the air outlet for eruption, thereby maximizing the wind efficiency.

[0040] For further information, please refer to Figure 1 and Figure 8 The air outlet end of the housing 10 is also provided with a nozzle 1, which is sleeved on the outer periphery of the housing 10 and fixed by any existing feasible method such as screw connection or clamping.

[0041] As a preferred solution of this embodiment, the nozzle 1 includes a connecting end and an outlet end. The connecting end is fixedly connected to the casing 10. The diameter of the outlet end is smaller than the diameter of the connecting end, which further gathers and increases the speed of the axial wind in the casing 10.

[0042] The material of the nozzle 1 is a high temperature resistant metal material, preferably an aluminum alloy. The diameter value of the nozzle 1 outlet section is designed according to the wind speed and air volume required by the overall performance. Under the premise that the wind speed requirement is greater than 22m / s, the appropriate value is selected according to the calculation formula: air outlet area = air volume / wind speed.

[0043] Please refer to Figure 1 and Fig. 9 A protective net 9 is provided at the air inlet of the housing 10. When the fire extinguisher is working, the rotating fan blades 7 rotate at high speed, a strong negative pressure is formed in the housing 10, and a large amount of air outside the housing 10 flows in from the air inlet. The protective net 9 can prevent the clothes of the staff and external debris from entering the housing 10, causing injury and damage to personnel or equipment. The protective net 9 is the back cover of the fire extinguisher housing, which not only ensures the safety of use, but also has a good ventilation effect.

[0044] Please refer to Figure 1 A handle is provided on the outer wall of the casing 10 for the convenience of the staff to hold. A lithium battery pack 8 serving as the power source of the driving mechanism 3 is arranged at the tail of the handle. A power switch 4 and a speed regulating switch 5 are also provided on the handle. The lithium battery pack 8 is electrically connected to the driving mechanism 3, the power switch 4 and the speed regulating switch 5.

[0045] The power switch 4 is a normally open switch of the grip type. The power is turned on by gripping the switch, and the power is turned off by releasing the switch, so as to avoid the danger of forgetting to cut off the power when not in working state. The speed regulating switch 5 is used to control the speed of the driving mechanism 3. By adjusting the speed, the fire extinguisher can not only be used for fire extinguishing, but also control the wind power for other purposes, such as making the safe fire source such as cooking fire burn more vigorously, or as a wind source for drying.

[0046] Lithium battery is an environmentally friendly new energy source. As the motor driving source of the fire extinguisher, it is environmentally friendly and safe, light in weight, can be recharged repeatedly, and has a long service life. In this embodiment, a DC21v, 3000mAh lithium battery pack 8 is preferably used to drive a high-speed DC motor to drive the rotating fan blades 7 to rotate at high speed.

[0047] Any lithium battery pack 8, power switch 4 and speed regulating switch 5 that can achieve the above functions can be used in this embodiment.

[0048] The utility model is based on the urgent needs of the recent market and aims at the shortcomings of traditional chemical fire extinguishers and traditional wind-powered fire extinguishers. It fully meets the requirements of safe use, environmental protection, simple operation, and fast starting and extinguishing speed. It can extinguish low-intensity fires in the early stage of fire in a timely and rapid manner and can be widely used in aerospace, aviation, vehicles and ships, offices, warehouses, hotels, schools, hospitals, homes and other places.

[0049] Adaptive changes made according to actual needs are all within the protection scope of this utility model.

[0050] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numerals in the claims should not be regarded as limiting the claims involved.

Claims

1. A new type of environmentally friendly lithium-powered wind-powered fire extinguisher, characterized by: It includes a casing, one end of which is an air inlet, and the other end of which is an air outlet; fixed blades, rotating blades and a driving mechanism for driving the rotating blades to rotate are arranged in the casing, the fixed blades and the driving mechanism are fixedly arranged on the inner wall of the casing, and the fixed blades are distributed at intervals along the inner circumference of the casing; the output end of the driving mechanism is fixedly connected to the rotating blades, and the rotating blades are located behind the fixed blades and away from the air outlet.

2. A new type of environmentally friendly lithium-powered wind-powered fire extinguisher according to claim 1, characterized in that: The fixed blades are fixedly arranged on the inner wall of the casing through a fixed tube, the outer periphery of the fixed tube is fixedly connected to the inner wall of the casing, and the fixed blades are evenly arranged on the inner wall of the fixed tube along the circumferential direction.

3. A new type of environmentally friendly lithium-powered wind-powered fire extinguisher according to claim 2, characterized in that: A driving bracket is also provided inside the fixed cylinder, one end of the fixed fan blade is connected to the inner wall of the fixed cylinder, and the other end is connected to the outer wall of the driving bracket, and the driving mechanism is fixedly provided on the driving bracket.

4. A new type of environmentally friendly lithium-powered wind-powered fire extinguisher according to claim 1, characterized in that: It also includes a deflector, which is arranged in front of the fixed fan blades and close to the air outlet. The deflector is coaxial with the casing and the air outlet.

5. A new type of environmentally friendly lithium-powered wind-powered fire extinguisher according to claim 4, characterized in that: The front end of the deflector is a conical cylinder structure.

6. A new type of environmentally friendly lithium-powered wind-powered fire extinguisher according to claim 1, characterized in that: It also includes a nozzle, which is fixedly sleeved on the air outlet end of the casing.

7. A new type of environmentally friendly lithium-powered wind-powered fire extinguisher according to claim 6, characterized in that: The nozzle comprises a connecting end and an outlet end, and a diameter of the outlet end is smaller than a diameter of the connecting end.

8. A new type of environmentally friendly lithium-powered wind-powered fire extinguisher according to claim 1, characterized in that: A protective net is arranged at the air inlet.

9. A new type of environmentally friendly lithium-powered wind-powered fire extinguisher according to any one of claims 1 to 8, characterized in that: A handle is arranged on the outer wall of the casing.

10. A new type of environmentally friendly lithium-powered wind-powered fire extinguisher according to claim 9, characterized in that: A lithium battery pack is arranged at the tail of the handle, a power switch and a speed regulating switch are arranged on the handle, and the lithium battery pack is electrically connected to the driving mechanism, the power switch and the speed regulating switch.

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