Power device of pneumatic extinguisher

Abstract

The utility model belongs to the field of pneumatic extinguisher power devices, and particularly relates to a pneumatic extinguisher power device which comprises a pneumatic extinguisher, a driving motor is fixedly connected in the pneumatic extinguisher, and a connecting assembly comprises a left rotating shaft fixedly connected to the output end of the driving motor and a right rotating shaft fixedly connected to the output end of the driving motor. A left magnetic disc is fixedly connected to one end of the left rotating shaft, a right magnetic disc is arranged on the side face of the left magnetic disc, a right rotating shaft is fixedly connected to the back face of the right magnetic disc, one end of the right rotating shaft is fixedly connected to the side face of the impeller, and permanent magnets with N-S poles arranged alternately are fixedly connected to the side faces of the left magnetic disc and the right magnetic disc in an annular array. Through the non-contact magnetic coupling design of the left magnetic disk and the right magnetic disk in the connecting assembly, the N-S poles of the permanent magnets are alternately arranged to form a transmission surface, when the impeller is blocked by foreign matter, magnetic coupling between the left magnetic disk and the right magnetic disk automatically slips, stopping of a driving motor due to overload is avoided, and the operation reliability of equipment in a complex environment is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of wind-powered fire extinguisher power devices, specifically a wind-powered fire extinguisher power device. Background Technology

[0002] Wind-powered fire extinguishers, commonly known as blowers, are mainly used for forest fire fighting, fire rescue, landscaping, highway engineering, and also in industrial production. Currently, wind-powered fire extinguishers on the market typically consist of a small centrifugal fan driven by a motor. The outlet of this small centrifugal fan is connected to a converging air duct. When the small centrifugal fan is working, the airflow generated is accelerated by the converging air duct, and the outlet of the duct can obtain a high dynamic pressure, thereby achieving the fire extinguishing effect. They are often used for single-person portable forest fire fighting, and the motor is usually a small engine or diesel engine.

[0003] In the prior art, such as in publication number CN204864639U, a backpack-type wind-powered fire extinguisher is disclosed. It includes an "L"-shaped base, and a powerful fan, oil tank, power unit, air outlet pipe, coolant tank, and power unit pull rod fixedly mounted on the "L"-shaped base. The "L"-shaped base is connected to the power unit via a connecting pipe for enhanced stability. The handle switch is detachably fixed to the air outlet pipe. A double shoulder strap is provided on the back of the "L"-shaped base. This backpack-type wind-powered fire extinguisher has a simple structure, can be carried on the back with the shoulder straps, saving effort and facilitating operation. The handle switch controls both the wind speed and the direction of the air outlet pipe, achieving two functions at once. By forcibly blowing the exhaust gas from the power unit towards the burning object, it isolates oxygen, improving the fire extinguishing effect.

[0004] Although the aforementioned patent allows the fire extinguisher to be worn on the back with shoulder straps, it can cause the engine to stall if the impeller gets stuck. At the same time, the lack of a structure to assist in cooling the engine makes it prone to overheating in high-temperature environments. Therefore, a wind-powered fire extinguisher power device is proposed to address the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, such as engine stalling when the impeller gets stuck, and the lack of auxiliary cooling structures for the engine, which makes it prone to overheating in high-temperature environments, this invention proposes a wind-powered fire extinguisher power unit.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: The wind-powered fire extinguisher power device of this utility model includes a wind-powered fire extinguisher, a drive motor is fixedly connected inside the wind-powered fire extinguisher, a connecting assembly is fixedly connected to the output end of the drive motor, an impeller is fixedly connected to one end of the connecting assembly, a rotating rod is fixedly connected to the back of the impeller, a bearing is sleeved on one end of the rotating rod and the bearing is fixedly connected to the inside of the wind-powered fire extinguisher, and a cooling assembly is fixedly connected to one end of the drive motor.

[0007] The connecting assembly includes a left rotating shaft fixedly connected to the output end of the drive motor. A left disk is fixedly connected to one end of the left rotating shaft. A right disk is disposed on the side of the left disk. A right rotating shaft is fixedly connected to the back of the right disk, and one end of the right rotating shaft is fixedly connected to the side of the impeller. Permanent magnets with alternating N and N poles are fixedly connected to the sides of both the left and right disks in a ring array.

[0008] The cooling assembly includes a semiconductor cooling chip fixedly connected to one end of the drive motor. Heat dissipation fins are fixedly connected to the side of the semiconductor cooling chip. Thermally conductive silicone pads are fixedly connected to the side of the heat dissipation fins. A negative pressure fan is fixedly connected to the side of the thermally conductive silicone pads.

[0009] Preferably, there is a non-contact gap between the left disk and the right disk, and the permanent magnets of the two are axially symmetrically distributed, forming a magnetic coupling transmission surface between the permanent magnets of the left disk and the permanent magnets of the right disk.

[0010] Preferably, the axes of the left and right rotating shafts coincide, and the diameters of the left and right disks are larger than the outer diameter of the permanent magnet distribution area.

[0011] Preferably, the cooling surface of the semiconductor refrigeration chip is attached to the housing surface of the drive motor, and the heating surface of the semiconductor refrigeration chip is connected to the air intake side of the negative pressure fan through heat dissipation fins and thermally conductive silicone pads.

[0012] Preferably, the heat dissipation fins are corrugated aluminum fins and their extension direction is parallel to the airflow direction of the negative pressure fan, and the thermally conductive silicone sheet has a uniform thickness and covers the main surface area of ​​the heat dissipation fins.

[0013] Preferably, the air outlet of the negative pressure fan faces the outer casing of the wind-powered fire extinguisher and its axis is arranged at an inclined angle to the axis of the drive motor.

[0014] The advantages of this utility model are:

[0015] 1. This utility model uses a non-contact magnetic coupling design between the left and right disks in the connecting assembly. It utilizes the alternating N and S poles of permanent magnets to form a transmission surface. When the impeller is jammed by foreign objects, the magnetic coupling between the left and right disks automatically slips, preventing the drive motor from stalling due to overload, and significantly improving the operational reliability of the equipment in complex environments.

[0016] 2. This utility model achieves active cooling by directly attaching the cooling surface of the semiconductor cooling chip of the cooling component to the drive motor housing. The heating surface conducts heat to the air intake side of the negative pressure fan through aluminum corrugated heat dissipation fins and thermally conductive silicone pads. Combined with the directional exhaust of the negative pressure fan arranged at an inclined angle, an efficient circulating heat dissipation path is formed, which effectively prevents the drive motor from overheating and failing under high temperature conditions. Attached Figure Description

[0017] 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 these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the connection component structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the cooling component structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the disassembled structure of this utility model.

[0022] In the diagram: 1. Wind-powered fire extinguisher; 2. Drive motor; 3. Connecting assembly; 31. Left rotating shaft; 32. Left disk; 33. Right disk; 34. Right rotating shaft; 35. Permanent magnet; 4. Impeller; 5. Rotating rod; 6. Bearing; 7. Cooling assembly; 71. Semiconductor refrigeration chip; 72. Heat dissipation fins; 73. Thermal conductive silicone pad; 74. Negative pressure fan. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0024] Please see Figures 1-4 As shown, a wind-powered fire extinguisher power unit includes a wind-powered fire extinguisher 1. A drive motor 2 is fixedly connected inside the wind-powered fire extinguisher 1. A connecting component 3 is fixedly connected to the output end of the drive motor 2. An impeller 4 is fixedly connected to one end of the connecting component 3. A rotating rod 5 is fixedly connected to the back of the impeller 4. A bearing 6 is sleeved on one end of the rotating rod 5 and the bearing 6 is fixedly connected to the inside of the wind-powered fire extinguisher 1. A cooling component 7 is fixedly connected to one end of the drive motor 2. The connecting component 3 includes a left rotating shaft 31 fixedly connected to the output end of the drive motor 2. A left disk 32 is fixedly connected to one end of the left rotating shaft 31. A right disk 33 is provided on the side of the left disk 32. A right rotating shaft 34 is fixedly connected to the back of the right disk 33 and one end of the right rotating shaft 34 is fixedly connected to the side of the impeller 4. Permanent magnets 35 with alternating N and N poles are fixedly connected in a ring array on the sides of both the left disk 32 and the right disk 33.

[0025] During operation, after the drive motor 2 starts, the left rotating shaft 31 drives the left disk 32 to rotate. The permanent magnets 35 distributed around the left disk 32 drive the right disk 33 to rotate synchronously through magnetic field coupling. The right rotating shaft 34 transmits torque to the impeller 4 to generate high-speed airflow. When the impeller 4 is blocked by foreign objects, causing the right disk 33 to be obstructed, the non-contact interval between the left disk 32 and the right disk 33 causes the magnetic coupling surface to slide relative to each other. The drive motor 2 continues to run idle to avoid overload shutdown. After the fault is cleared, the magnetic coupling automatically resumes transmission.

[0026] Furthermore, the cooling assembly 7 includes a semiconductor cooling chip 71 fixedly connected to one end of the drive motor 2, a heat dissipation fin 72 fixedly connected to the side of the semiconductor cooling chip 71, a thermally conductive silicone sheet 73 fixedly connected to the side of the heat dissipation fin 72, and a negative pressure fan 74 fixedly connected to the side of the thermally conductive silicone sheet 73.

[0027] During operation, the heat generated by the drive motor 2 is conducted through the outer casing to the cooling surface of the semiconductor cooling chip 71. The cooling surface absorbs the heat and transfers it to the heating surface. The heat from the heating surface is diffused through the aluminum corrugated heat dissipation fins 72 and evenly transferred to the air intake side of the negative pressure fan 74 through the thermally conductive silicone sheet 73. The negative pressure fan 74 is arranged at an inclined angle to directionally discharge hot air along the outside of the wind-powered fire extinguisher 1 casing, forming a closed-loop heat dissipation path of "heat absorption by the cooling surface - air flow guidance by the heat dissipation fins - air exhaust by the negative pressure fan", ensuring that the temperature rise of the drive motor 2 is within the safe threshold.

[0028] Furthermore, a non-contact gap is provided between the left disk 32 and the right disk 33, and the permanent magnets 35 of the two are axially symmetrically distributed, forming a magnetic coupling transmission surface between the permanent magnets 35 of the left disk 32 and the permanent magnets 35 of the right disk 33.

[0029] During operation, when the drive motor 2 drives the left disk 32 to rotate, the alternating N and S poles of the permanent magnet 35 generate periodic magnetic field changes, driving the right disk 33 to rotate synchronously, and the impeller 4 outputs high-speed airflow accordingly. The non-contact interval design eliminates the friction loss of traditional mechanical transmission. At the same time, when the impeller 4 is stuck, the right disk 33 stops rotating, the magnetic field coupling between the left disk 32 and the right disk 33 fails, the drive motor 2 idles to avoid stalling, and the axial symmetrical distribution of the permanent magnets 35 ensures uniform magnetic field transmission, improving transmission efficiency and overload resistance.

[0030] Furthermore, the heat dissipation fins 72 are corrugated aluminum fins and their extension direction is parallel to the airflow direction of the negative pressure fan 74. The thermally conductive silicone sheet 73 has a uniform thickness and covers the main surface area of ​​the heat dissipation fins 72.

[0031] During operation, the heat from the heating surface of the semiconductor cooling chip 71 increases the heat dissipation area through the corrugated heat dissipation fins 72 and spreads rapidly along the airflow direction. The thermally conductive silicone pad 73 evenly transfers the heat to the air intake side of the negative pressure fan 74, and the tilted negative pressure fan 74 directionally exhausts the hot air. The high thermal conductivity of aluminum and the corrugated structure enhance the heat dissipation efficiency, and the full coverage of the thermally conductive silicone pad 73 avoids local heat accumulation, ensuring that the drive motor 2 continues to operate stably in high-temperature environments.

[0032] Working principle: After the drive motor 2 starts, it drives the left disk 32 to rotate through the left rotating shaft 31. The permanent magnets 35 in the ring array on the side of the left disk 32 drive the right disk 33 to rotate synchronously through the alternating magnetic field coupling of the N and S poles. The right rotating shaft 34 transmits the torque to the impeller 4 to generate a high-speed fire extinguishing airflow. When the impeller 4 is stuck due to external resistance, the non-contact gap between the left disk 32 and the right disk 33 causes the magnetic coupling to fail, and the drive motor 2 runs idle to avoid overload damage. At the same time, the cooling surface of the semiconductor cooling chip 71 absorbs the heat of the drive motor 2 shell and transfers it to the heating surface. The heat of the heating surface is diffused through the aluminum corrugated heat dissipation fins 72 and evenly transferred to the air intake side of the negative pressure fan 74 by the thermally conductive silicone sheet 73. The negative pressure fan 74 directs the hot airflow to the outside of the wind-powered fire extinguisher 1 at an inclined angle, realizing the coordinated and efficient operation of power transmission and heat dissipation.

[0033] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, or similar improvements made within the theoretical and principle content of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A power unit for a wind-powered fire extinguisher, characterized in that: The device includes a wind-powered fire extinguisher (1), a drive motor (2) is fixedly connected inside the wind-powered fire extinguisher (1), a connecting component (3) is fixedly connected to the output end of the drive motor (2), an impeller (4) is fixedly connected to one end of the connecting component (3), a rotating rod (5) is fixedly connected to the back of the impeller (4), a bearing (6) is sleeved on one end of the rotating rod (5) and the bearing (6) is fixedly connected inside the wind-powered fire extinguisher (1), and a cooling component (7) is fixedly connected to one end of the drive motor (2). The connecting component (3) includes a left rotating shaft (31) fixedly connected to the output end of the drive motor (2). One end of the left rotating shaft (31) is fixedly connected to a left disk (32). A right disk (33) is provided on the side of the left disk (32). A right rotating shaft (34) is fixedly connected to the back of the right disk (33), and one end of the right rotating shaft (34) is fixedly connected to the side of the impeller (4). The sides of the left disk (32) and the right disk (33) are both fixedly connected with permanent magnets (35) with alternating N and N poles in a ring array. The cooling assembly (7) includes a semiconductor cooling chip (71) fixedly connected to one end of the drive motor (2). A heat dissipation fin (72) is fixedly connected to the side of the semiconductor cooling chip (71). A thermally conductive silicone pad (73) is fixedly connected to the side of the heat dissipation fin (72). A negative pressure fan (74) is fixedly connected to the side of the thermally conductive silicone pad (73).

2. The power device for a wind-powered fire extinguisher according to claim 1, characterized in that: The left disk (32) and the right disk (33) are provided with a non-contact interval and their permanent magnets (35) are axially symmetrically distributed. The permanent magnets (35) of the left disk (32) and the permanent magnets (35) of the right disk (33) form a magnetic coupling transmission surface.

3. The power device for a wind-powered fire extinguisher according to claim 1, characterized in that: The axes of the left rotating shaft (31) and the right rotating shaft (34) coincide, and the diameters of the left disk (32) and the right disk (33) are larger than the outer diameter of the permanent magnet (35) distribution area.

4. The power device for a wind-powered fire extinguisher according to claim 1, characterized in that: The cooling surface of the semiconductor cooling chip (71) is attached to the outer surface of the drive motor (2), and the heating surface of the semiconductor cooling chip (71) is connected to the air intake side of the negative pressure fan (74) through heat dissipation fins (72) and thermally conductive silicone pads (73).

5. The power device for a wind-powered fire extinguisher according to claim 1, characterized in that: The heat dissipation fins (72) are corrugated aluminum fins and their extension direction is parallel to the airflow direction of the negative pressure fan (74). The thermally conductive silicone sheet (73) has a uniform thickness and covers the main surface area of ​​the heat dissipation fins (72).

6. The power device for a wind-powered fire extinguisher according to claim 1, characterized in that: The air outlet of the negative pressure fan (74) faces the outer casing of the wind-powered fire extinguisher (1), and its axis is arranged at an inclined angle to the axis of the drive motor (2).

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