Handheld wireless electric fire extinguisher
By designing a wireless electric fire extinguisher with an airtight liquid extraction device and a water pump system, the safety hazards and insufficient pressure problems of existing foam fire extinguishers are solved, stable spraying and flexible operation are achieved, and the safety and efficiency of the fire extinguisher are improved.
Patent Information
- Application Number
- CN202422410144.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-09-30
AI Technical Summary
Existing foam fire extinguishers need to be pressurized and stored after the extinguishing agent concentrate is mixed with water, which poses safety hazards and reduces the fire extinguishing effect due to pressure leakage. In addition, the pressure decreases after the use time increases, affecting the spray intensity and coverage range, increasing the risk and difficulty of fire extinguishing.
A handheld cordless electric fire extinguisher is designed. It adopts an airtightly connected liquid extraction device and water pump system, utilizes the Venturi effect to mix the fire extinguishing agent, and ensures stable spraying and flexible operation through a diversified nozzle and flexible connecting pipe design, combined with a lithium battery and a reduction gearbox.
It achieves the safety, reliability and efficiency of the fire extinguisher, avoids the hidden danger of pressure leakage, provides stable spray pressure and diversified spray methods, improves fire extinguishing efficiency and applicability, and adapts to various usage scenarios.
Smart Images
Figure CN223350875U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fire-fighting equipment, in particular to a handheld wireless electric fire extinguisher. Background Art
[0002] In the prior art, the extinguishing agent of a foam fire extinguisher is usually stored after mixing the extinguishing agent concentrate with water. Although this design can improve the speed of fire extinguishing to a certain extent, it also has significant defects. First, the mixed fire extinguishing agent needs to be pressurized when stored in the fire extinguisher. The pressurized fire extinguisher has safety hazards caused by pressure during the fire extinguishing operation, and the fire extinguishing effect will deteriorate when the pressure leaks. Secondly, due to the high initial pressure when the foam fire extinguisher is used, the pressure in the foam fire extinguisher gradually decreases as the use time increases, which in turn affects the spray intensity and coverage. Such limitations make the fire extinguisher face more difficult problems in actual use, especially when facing a rapidly spreading fire, the performance of the fire extinguisher fails to meet expectations, increasing the risk and difficulty of fire extinguishing.
[0003] Therefore, the existing technology has defects and needs to be improved and developed. Summary of the Invention
[0004] The embodiment of the present utility model provides a handheld wireless electric fire extinguisher, which is used to solve the problem in the prior art that the fire extinguishing agent of the fire extinguisher is usually stored after mixing the fire extinguishing agent raw liquid with water, and the mixed fire extinguishing agent needs to be pressurized when stored in the fire extinguisher. The pressurized fire extinguisher has a safety hazard caused by pressure during the fire extinguishing operation, and the fire extinguishing effect will be deteriorated when the pressure leaks. In addition, since the initial pressure of the foam fire extinguisher is high when it is used, the pressure in the foam fire extinguisher gradually decreases with the increase of the use time, which affects the spray intensity and coverage range, thereby causing the performance of the fire extinguisher to fail to meet expectations, increasing the risk and difficulty of fire extinguishing.
[0005] The embodiment of the present utility model provides a handheld wireless electric fire extinguisher, comprising a gun-type housing, wherein a first connecting pipe is air-tightly connected to a gun nozzle of the gun-type housing, the other end of the first connecting pipe is air-tightly connected to a liquid taking device, the liquid taking device is air-tightly connected to a second connecting pipe, and a water outlet of the second connecting pipe is detachably connected to a nozzle; the liquid taking device comprises a first conical tube, a straight tube, and a second conical tube, one end of the first conical tube is air-tightly connected to the first connecting pipe, the other end of the first conical tube is air-tightly connected to the straight tube, the diameter of the tube surface of the first conical tube connected to the first connecting pipe is larger than the diameter of the tube surface of the first conical tube connected to the straight tube, one end of the second conical tube is air-tightly connected to the second connecting pipe, the other end of the second conical tube is air-tightly connected to the straight tube, and the second conical tube is connected to the second The tube diameter of the tube surface of the connecting tube is larger than the tube diameter of the tube surface of the second tapered tube connected to the straight tube, the liquid taking device also includes a fourth connecting tube fixed on the outer surface of the liquid taking device, the fourth connecting tube is detachably connected to the liquid storage bottle, the liquid taking device also includes a third connecting tube, one end of the third connecting tube is connected to the straight tube, and the other end of the third connecting tube is located in the liquid storage bottle; a storage chamber is fixed in the gun-type housing, the water inlet of the storage chamber is air-tightly connected to the fifth connecting tube through a quick-change joint, the other end of the fifth connecting tube is connected to a filter, and the water outlet of the storage chamber is air-tightly connected to the first connecting tube; the bottom of the handle of the gun-type housing is detachably connected to a charging power supply, and a water pump is fixed in the gun-type housing, and when the trigger of the gun-type housing is pressed, the charging power supply is electrically connected to the water pump.
[0006] In some embodiments, an internal thread is provided on the inner wall of the fourth connecting tube, and an external thread matching the internal thread is provided on the outer side of the bottle mouth of the liquid storage bottle.
[0007] In some embodiments, the third connecting tube is a hard tube or a soft tube. When the third connecting tube is a hard tube, one end of the third connecting tube located in the liquid storage bottle is close to the bottom of the liquid storage bottle; when the third connecting tube is a soft tube, the length of the third connecting tube is at least greater than the height of the liquid storage bottle.
[0008] In some embodiments, a valve is provided on the second connecting pipe.
[0009] In some embodiments, the nozzle is a water mist nozzle or a water column nozzle.
[0010] In some embodiments, the water inlet of the storage chamber is located on the barrel of the gun-type housing and faces the ground when the gun-type housing is held.
[0011] In some embodiments, the fifth connecting pipe is a hose.
[0012] In some embodiments, the charging power source is a lithium battery.
[0013] In some embodiments, the gun-type housing further includes a reduction gearbox, which is electrically connected to the charging power supply. When the water pump is started, the reduction gearbox reduces the rotation speed to increase the water pressure of the water pump.
[0014] In some embodiments, the liquid stored in the liquid storage bottle is foam concentrate, and when the handheld cordless electric fire extinguisher is in operation, the filter is placed in a water storage container.
[0015] Beneficial effects:
[0016] As can be seen from the above technical solutions, the present invention provides a handheld cordless electric fire extinguisher. By designing a liquid dispensing device, it utilizes the Venturi effect to mix the liquid stored in the liquid storage bottle with the liquid pumped by the water pump, and then sprays it through the nozzle, allowing for on-demand mixing during fire extinguishing. This effectively solves the problems of insufficient pressure and difficulty in spraying that fire extinguishers face in the prior art. Furthermore, the airtight connection of the liquid dispensing device ensures efficient liquid delivery, maintaining a stable pressure during spraying, significantly improving fire extinguishing effectiveness and preventing operational safety hazards caused by pressure leaks, making it safe and reliable to use. A variety of nozzle options allow users to select the most appropriate spray method for different fire types, enhancing the applicability of the fire extinguisher. The flexible connection pipe design and valve control not only improve operational convenience and safety, but also ensure rapid response in emergency situations. The combination of a lithium battery and a reduction gearbox ensures the fire extinguisher's high efficiency and reliability, adapting to a variety of usage scenarios. Furthermore, the use of aqueous film-forming foam liquid and the design of the filter ensure stable operation of the fire extinguisher, further enhancing the user experience. These innovative designs together improve the overall performance of the fire extinguisher, making it a safer, more effective and convenient fire-fighting tool.
[0017] It should be appreciated that all combinations of the foregoing concepts, as well as additional concepts described in greater detail below, to the extent such concepts are not mutually inconsistent, can be considered to be part of the inventive subject matter of this disclosure.
[0018] The foregoing and other aspects, embodiments, and features of the present invention will be more fully understood from the following description in conjunction with the accompanying drawings. Other additional aspects of the present invention, such as features and / or beneficial effects of the exemplary embodiments, will become apparent from the following description or through practice of specific embodiments according to the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The accompanying drawings are not drawn to scale. In the accompanying drawings, each identical or nearly identical component shown in various figures may be represented by the same reference numeral. For clarity, not every component is labeled in every figure. Embodiments of various aspects of the present invention will now be described by way of example with reference to the accompanying drawings, in which:
[0020] Figure 1 This is a structural diagram of a handheld cordless electric fire extinguisher in an embodiment of the present application.
[0021] Figure 2 This is a cross-sectional view of a gun-type housing of a handheld cordless electric fire extinguisher in an embodiment of the present application.
[0022] Figure 3 This is a structural schematic diagram of a liquid collection device for a handheld cordless electric fire extinguisher in an embodiment of the present application.
[0023] Description of Figure Numbers:
[0024] Gun-type housing 1; first connecting pipe 2; liquid extraction device 3; first tapered tube 301; straight tube 302; second tapered tube 303; third connecting pipe 304; fourth connecting pipe 305; liquid storage bottle 4; second connecting pipe 5; valve 6; nozzle 7; quick-change connector 8; fifth connecting pipe 9; filter 10; trigger 11; water pump 12; storage chamber 13. DETAILED DESCRIPTION
[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Unless otherwise defined, the technical terms or scientific terms used herein should be the common meanings understood by people with ordinary skills in the field to which the present invention belongs.
[0026] The words "first", "second" and similar words used in the patent application specification and claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, unless the context clearly indicates otherwise, the singular forms of "a", "an" or "the" and similar words do not indicate a quantity limitation, but rather indicate the presence of at least one. Words such as "include" or "comprise" mean that the elements or objects appearing before "include" or "comprise" cover the features, wholes, steps, operations, elements and / or components listed after "include" or "comprise", and do not exclude the existence or addition of one or more other features, wholes, steps, operations, elements, components and / or their collections. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0027] In the prior art, since the extinguishing agent of a fire extinguisher is usually stored after mixing the extinguishing agent concentrate with water, the mixed extinguishing agent needs to be pressurized when stored in the fire extinguisher. The pressurized fire extinguisher has safety hazards caused by pressure during fire extinguishing operations, and the fire extinguishing effect will deteriorate when the pressure leaks. In addition, since the initial pressure of the foam fire extinguisher is high when used, the pressure in the foam fire extinguisher gradually decreases as the use time increases, which affects the spray intensity and coverage range, resulting in the fire extinguisher's performance failing to meet expectations, increasing the risk and difficulty of fire extinguishing.
[0028] In view of this, the present invention provides a handheld wireless electric fire extinguisher, referring to Figure 1 The fire extinguisher comprises a gun-type housing 1, the nozzle of which is airtightly connected to a first connecting pipe 2, the other end of which is airtightly connected to a liquid collection device 3, which is airtightly connected to a second connecting pipe 5, the outlet of which is detachably connected to a nozzle 7. The design of the gun-type housing 1 enhances the portability and ease of operation of the fire extinguisher.
[0029] Reference Figure 3The liquid collection device 3 includes a first tapered tube 301, a straight tube 302, and a second tapered tube 303. One end of the first tapered tube 301 is airtightly connected to the first connecting tube 2, and the other end of the first tapered tube 301 is airtightly connected to the straight tube 302. The diameter of the tube surface where the first tapered tube 301 connects to the first connecting tube 2 is larger than the diameter of the tube surface where the first tapered tube 301 connects to the straight tube 302. One end of the second tapered tube 303 is airtightly connected to the second connecting tube 5, and the other end of the second tapered tube 303 is airtightly connected to the straight tube 302. The diameter of the tube surface where the second tapered tube 303 connects to the second connecting tube 5 is larger than the diameter of the tube surface where the second tapered tube 303 connects to the straight tube 302. The liquid collection device 3 also includes a fourth connecting tube 305 fixed to the outer surface of the liquid collection device 3. The fourth connecting tube 305 is detachably connected to the liquid storage bottle 4. The liquid extraction device 3 also includes a third connecting tube 304, one end of which is connected to the straight tube 302 and the other end of which is located within the liquid storage bottle 4. The first tapered tube 301, the straight tube 302, and the second tapered tube 303 utilize a Venturi effect. Because the straight tube 302 has a small diameter, the liquid flows quickly and has low pressure, thereby adsorbing the liquid within the liquid storage bottle 4. In certain embodiments, the liquid stored in the liquid storage bottle 4 is a foam concentrate, such as a 3% aqueous film-forming foam. When the handheld cordless electric fire extinguisher is in operation, the filter 10 is placed in a water storage container, which can include any container for holding water and a device that provides a continuous water supply. When the foam concentrate is a 3% aqueous film-forming foam concentrate, only a small amount of the fire extinguishing agent is needed to produce a large amount of foam. Therefore, the foam concentrate adsorbed from the liquid storage bottle 4 is sufficient for use. The airtight connection of the liquid extraction device 3 ensures efficient liquid delivery, avoids the problem of insufficient pressure in the mixed liquid, and provides a stable spray effect. Compared with the potential risk of pressure leakage caused by the need for filling pressure of traditional fire extinguishers, the embodiment of the utility model provides a handheld wireless electric fire extinguisher that mixes liquids during use and is pumped by a water pump for transportation. There is no need to consider the impact of pressure leakage, and the operation is safe and reliable.
[0030] Reference Figure 2 A storage chamber 13 is fixed in the gun-type housing 1. The water inlet of the storage chamber 13 is airtightly connected to the fifth connecting pipe 9 through a quick-change joint 8. The other end of the fifth connecting pipe 9 is connected to a filter 10. The water outlet of the storage chamber 13 is airtightly connected to the first connecting pipe 2. Figure 2 The bottom of the grip of the gun-type housing 1 is detachably connected to a charging power supply, and a water pump 12 is fixed inside the gun-type housing 1. When the trigger 11 of the gun-type housing 1 is pressed, the charging power supply is electrically connected to the water pump 12.
[0031] In certain embodiments, the inner wall of the fourth connecting tube 305 is provided with internal threads, and the outer surface of the opening of the liquid storage bottle 4 is provided with external threads that match the internal threads. This design of internal and external threads allows for a removable and more secure connection between the liquid storage bottle 4 and the connecting tube, facilitating subsequent replacement and removal, and reducing liquid leakage caused by poor connections. This design simplifies the process of replacing or refilling liquid, enhancing the fire extinguisher's flexibility and ease of maintenance.
[0032] In certain embodiments, the third connecting tube 304 is a rigid tube or a flexible tube. When the third connecting tube 304 is a rigid tube, one end of the third connecting tube 304 located within the liquid storage bottle 4 is proximate to the bottom of the liquid storage bottle 4. When the third connecting tube 304 is a flexible tube, the length of the third connecting tube 304 is at least greater than the height of the liquid storage bottle 4. Selecting a rigid tube or flexible tube based on actual needs allows the fire extinguisher to be flexibly adjusted to the position and shape of the liquid storage bottle 4, ensuring smooth access to the liquid. A rigid tube performs well when stable flow is required, while the flexibility of a flexible tube allows for operation in confined or complex environments, meeting a variety of usage requirements.
[0033] In some embodiments, a valve 6 is provided on the second connecting pipe 5. This provides precise control over the flow of liquid, allowing the user to open or close the valve 6 as needed during firefighting. This design not only reduces liquid waste but also prevents accidental leakage of liquid when not in use, improving overall safety.
[0034] In some embodiments, nozzle 7 is a water mist nozzle or a water jet nozzle. By choosing between these two nozzles, users can flexibly select the appropriate fire extinguishing method based on the fire type. Water mist nozzles effectively cover large areas and are suitable for extinguishing flammable liquid fires; whereas water jet nozzles are suitable for directly attacking larger flames, providing a targeted fire extinguishing solution.
[0035] In certain embodiments, the water inlet of the storage chamber 13 is located on the barrel of the gun-style housing 1 and faces the ground when the gun-style housing 1 is held. Positioning the water inlet on the barrel and facing the ground enhances liquid access efficiency, eliminates the need to adjust the position of the fire extinguisher during operation, and reduces inconvenience and time waste. This design optimizes the user experience, especially in emergency situations.
[0036] In some embodiments, the fifth connecting pipe 9 is a hose. This design provides greater flexibility, accommodating liquid storage bottles 4 of varying shapes and sizes, ensuring smooth flow under a variety of conditions. This design not only improves the reliability of liquid delivery but also reduces operational complexity, enabling rapid response to sudden fires.
[0037] In some embodiments, the rechargeable power source is a lithium battery. Lithium batteries offer high energy density and a long service life. Compared to traditional batteries, they are lighter and offer superior performance. This allows the fire extinguisher to maintain high performance even after extended use, reducing the need for frequent charging and improving convenience.
[0038] In some embodiments, the gun-type housing 1 also includes a reduction gearbox, which is electrically connected to a charging power source. When the water pump 12 is activated, the reduction gearbox reduces the rotational speed to increase the water pressure of the water pump 12. The introduction of the reduction gearbox design can effectively increase the water pressure of the water pump 12, thereby enhancing the spray force. This design is particularly suitable for use in large fires, allowing the fire extinguisher to release a stronger water flow in a shorter period of time, improving firefighting efficiency.
[0039] In the early stage of a fire, when using the fire extinguishing equipment, first, multiple fully charged lithium batteries can be equipped to ensure sufficient driving force to drive the spraying of the fire extinguishing agent, and the quick-change connector 8 is connected to the water inlet of the storage chamber 13. The filter 10 is placed in the water body, and the water is pressurized by the water pump 12 and sucked through the filter 10. The water is pressurized so that the water is fully mixed with the liquid brought out from the liquid storage bottle 4. The mixed liquid is released to the fire source in the form of spray, jet or sprinkler by selecting different nozzles 7 to quickly extinguish the fire. In some embodiments, a combined knob nozzle can be selected to control the spray flow rate and spray intensity by rotating the nozzle 7 to adjust the spray form. Since the voltage function is uniform and stable, the spray is uniform. Considering the ease of operation of the user in an emergency situation, an easy-to-operate trigger 11 is provided to quickly start and control the fire extinguishing device.
[0040] In summary, the present invention provides a handheld cordless electric fire extinguisher that utilizes the Venturi effect to mix the liquid stored in the liquid storage bottle 4 with the liquid pumped by the water pump 12 through the design of a liquid extraction device 3. The liquid is then sprayed through the nozzle 7, allowing for on-demand mixing during fire extinguishing. This effectively addresses the issues of shelf life, insufficient pressure, and difficulty in spraying faced by fire extinguishers in the prior art. Furthermore, the airtight connection of the liquid extraction device 3 ensures the effective delivery of liquid, maintaining a stable pressure during the spraying process, thereby significantly improving the fire extinguishing effect. A variety of nozzle 7 options allow users to select the most appropriate spray method for different types of fires, enhancing the applicability of the fire extinguisher. The flexible connection pipe design and valve 6 control not only improve the convenience and safety of operation, but also ensure rapid response capabilities in emergency situations. The combined use of a lithium battery and a reduction gearbox ensures the high efficiency and reliability of the fire extinguisher, adapting it to a variety of usage scenarios. Furthermore, the use of aqueous film-forming foam liquid and the design of the filter 10 enable the fire extinguisher to operate stably, further enhancing the user experience. These innovative designs together improve the overall performance of the fire extinguisher, making it a safer, more effective and convenient fire-fighting tool.
[0041] While the present invention has been disclosed above with reference to preferred embodiments, this is not intended to limit the present invention. Persons skilled in the art will readily appreciate that various modifications and variations can be made without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the claims.
Claims
1. A handheld wireless electric fire extinguisher, comprising a gun-type housing, characterized in that: The gun-type housing is air-tightly connected to a first connecting pipe at the gun nozzle, the other end of the first connecting pipe is air-tightly connected to a liquid taking device, the liquid taking device is air-tightly connected to a second connecting pipe, and the water outlet of the second connecting pipe is detachably connected to a nozzle; the liquid taking device comprises a first conical tube, a straight tube, and a second conical tube, one end of the first conical tube is air-tightly connected to the first connecting pipe, the other end of the first conical tube is air-tightly connected to the straight tube, the diameter of the tube surface of the first conical tube connected to the first connecting pipe is larger than the diameter of the tube surface of the first conical tube connected to the straight tube, one end of the second conical tube is air-tightly connected to the second connecting pipe, the other end of the second conical tube is air-tightly connected to the straight tube, the diameter of the tube surface of the second conical tube connected to the second connecting pipe is larger than the diameter of the second The conical tube is connected to the diameter of the tube surface of the straight tube, and the liquid taking device also includes a fourth connecting tube fixed on the outer surface of the liquid taking device, and the fourth connecting tube is detachably connected to the liquid storage bottle. The liquid taking device also includes a third connecting tube, one end of the third connecting tube is connected to the straight tube, and the other end of the third connecting tube is located in the liquid storage bottle; a storage chamber is fixed in the gun-type housing, and the water inlet of the storage chamber is air-tightly connected to the fifth connecting tube through a quick-change joint, the other end of the fifth connecting tube is connected to a filter, and the water outlet of the storage chamber is air-tightly connected to the first connecting tube; the bottom of the handle of the gun-type housing is detachably connected to a charging power supply, and a water pump is fixed in the gun-type housing, and when the trigger of the gun-type housing is pressed, the charging power supply is electrically connected to the water pump.
2. A handheld cordless electric fire extinguisher according to claim 1, characterized in that: An internal thread is provided on the inner wall of the fourth connecting tube, and an external thread matching the internal thread is provided on the outer side of the bottle mouth of the liquid storage bottle.
3. A handheld cordless electric fire extinguisher according to claim 2, characterized in that: The third connecting tube is a hard tube or a soft tube. When the third connecting tube is a hard tube, one end of the third connecting tube located in the liquid storage bottle is close to the bottom of the liquid storage bottle; when the third connecting tube is a soft tube, the length of the third connecting tube is at least greater than the height of the liquid storage bottle.
4. A handheld cordless electric fire extinguisher according to claim 3, characterized in that: The second connecting pipe is provided with a valve.
5. A handheld cordless electric fire extinguisher according to claim 4, characterized in that: The nozzle is a water mist nozzle or a water column nozzle.
6. A handheld cordless electric fire extinguisher according to claim 5, characterized in that: When the gun-type housing is held, the water inlet of the storage chamber is located on the barrel of the gun-type housing and faces the ground.
7. A handheld cordless electric fire extinguisher according to claim 6, characterized in that: The fifth connecting pipe is a hose.
8. A handheld cordless electric fire extinguisher according to claim 7, characterized in that: The charging power source is a lithium battery.
9. The handheld cordless electric fire extinguisher according to claim 1, characterized in that: The gun-type housing also includes a reduction gearbox, which is electrically connected to the charging power supply. When the water pump is started, the reduction gearbox reduces the rotation speed to increase the water pressure of the water pump.
10. The handheld cordless electric fire extinguisher according to claim 1, characterized in that: The liquid stored in the liquid storage bottle is foam stock solution. When the handheld wireless electric fire extinguisher is in operation, the filter is placed in the water storage container.