Mosquito-killing fog vortex ring directional projection device and control system thereof

Abstract

The application discloses a mosquito-killing medicine mist vortex ring directional projection device and a control system thereof. The device comprises a gun body, a handheld part and an internal projection mechanism. The projection mechanism is sequentially provided with an airflow generation and energy storage assembly, a mosquito-killing medicine mist preparation and containing assembly and a vortex ring generation and launching assembly. The control system comprises a control module and a trigger switch. The application realizes the physical separation of pre-atomization and projection in time sequence. When the trigger is in the first stroke, the control module controls the atomization element to convert the mosquito-killing medicine into micron-level medicine mist droplets and gather the medicine mist droplets in a medicine mist containing cavity. When the trigger is in the second stroke, the airflow generation and energy storage assembly releases a transient high-pressure airflow to push the medicine mist droplets into a launching channel. The airflow flows through the contraction section of the vortex ring generation port, the short straight pipe throat and the sharp edge outlet to generate fluid shearing and winding and form a closed air vortex. The application overcomes the defect that the medicine mist is easy to disperse and realizes the long-distance directional delivery of the mosquito-killing medicine.

Description

Technical Field

[0001] This invention relates to the field of pest control equipment technology, specifically to a mosquito repellent mist vortex directional projection device and its control system. Background Technology

[0002] Pest control equipment is a common tool used to control and eliminate flying sanitary pests such as mosquitoes and flies. In daily home environments, workplaces, and public health and epidemic prevention work, the use of such equipment can block the transmission path of disease vectors and maintain the sanitary condition of the space environment. Among them, using chemical agents to kill mosquitoes and flies in the space is a conventional control method in this field.

[0003] Among existing chemical pesticide methods, aerosol spraying devices are the most widely used type of equipment. Traditional spraying devices usually rely on compressed gas inside the container as a power source. When the user presses the release valve, the high-pressure gas sprays the liquid mosquito repellent into an atomized state through the nozzle structure at the front end. After the user spots mosquitoes and flies within sight, he holds the device and sprays it in the approximate direction of the target, allowing the fine droplets carrying the pesticide to enter the air. The pesticide mist then comes into contact with and kills the target mosquitoes and flies by naturally floating and covering the air.

[0004] Existing aerosol spraying devices suffer from drawbacks in practical use, such as short spraying distance and easy dispersion of the spray mist. Because the fluid released from conventional nozzles exhibits a conical divergent trajectory, the spray droplets rapidly rub and collide with the surrounding still air after leaving the nozzle, causing the axial kinetic energy of the airflow to decay quickly. This results in a short effective range, making it difficult to reach mosquitoes and flies in distant locations such as ceilings, high walls, or deep corners. Due to the divergent airflow pattern, the spray droplets undergo large-scale disordered dispersion as they move towards distant locations, failing to maintain a concentrated concentration of the spray solution after leaving the device. Consequently, the device lacks the ability to deliver mosquito repellent to distant target areas with precise targeting. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a mosquito repellent mist vortex directional projection device and its control system, which solves the problem that existing mosquito repellent products cannot simultaneously achieve both active fixed-point and long-distance delivery.

[0006] The first aspect of the present invention provides a mosquito repellent mist vortex ring directional projection device, including a gun body, a handheld part disposed at the bottom of the gun body, and a projection mechanism disposed inside the gun body; The projection mechanism is arranged through the axial direction of the gun body. The rear section of the projection mechanism is equipped with an airflow generation and energy storage component, the middle section is equipped with a mosquito-killing mist preparation and containment component, and the front section extends to the outside of the gun body to form a vortex ring generation and launching component. The mosquito repellent spray preparation and containment assembly includes a spray containment cavity and an atomizing element fixedly connected to the top of the spray containment cavity. The atomizing element is used to convert liquid mosquito repellent into micron-sized spray droplets, which then accumulate in the spray containment cavity. The vortex ring generating and launching assembly includes a launching channel and a vortex ring generating port located at the end outlet of the launching channel; The airflow generation and energy storage component is used to generate instantaneous high-pressure airflow. The instantaneous high-pressure airflow rushes into the drug mist receiving cavity, pushing the mosquito-killing drug mist gathered inside to move forward and enter the launching channel. The airflow carrying the drug mist droplets rushes out of the vortex ring generator to generate fluid shearing and entanglement, forming a closed air vortex ring.

[0007] Preferably, the airflow generation and energy storage component is an airflow generation and mechanical triggering mechanism, which includes a piston and a compression spring slidably connected to the inner wall of the cavity of the main body of the gun; the rear end of the piston is elastically connected to the inner wall of the cavity of the main body of the gun through the compression spring, and a sealing ring is embedded on the outer periphery of the piston, forming a sliding sealing fit between the piston and the inner wall of the cavity of the main body of the gun; moving the piston backward compresses the compression spring and stores elastic potential energy.

[0008] Preferably, the airflow generation and mechanical triggering mechanism further includes a trigger, a traction belt, and a release pin; the trigger is rotatably connected to the inner side wall of the bottom end of the gun body, the rotation center axis of the trigger is wound around the traction belt, and the end of the traction belt away from the trigger is hinged to the release pin; a groove is opened on the lower surface of the piston, and the release pin is slidably connected to the bottom end of the inner wall of the gun body, and the outer wall of the release pin engages with the inner wall of the groove on the lower surface of the piston to complete the axial locking of the piston; pulling the trigger backward winds up the traction belt, and pulling down pulls the release pin out of the groove of the piston, thereby releasing the locking of the piston.

[0009] Preferably, the outer arc surface of the traction belt contacts a guide wheel, which is rotatably connected to the inner wall of the gun body. The guide wheel is used to change the direction of the tension of the traction belt. The release pin is elastically connected to the inner wall at the bottom of the gun body through a connecting spring, which provides an upward elastic force to the release pin. A torsion spring is provided at the rotatable connection between the trigger and the gun body, which provides a reset elastic force to the trigger.

[0010] Preferably, the airflow generation and mechanical triggering mechanism further includes a motor and a gear; a rack is fixedly connected to the outer arc surface of the piston along the axial direction of the piston; a motor is provided on the inner wall of the top of the gun body, and a gear is fixedly connected to the output shaft of the motor. The gear is rotatably connected to the inner side wall of the top of the gun body, and the gear meshes with the rack for transmission.

[0011] Preferably, a connecting pipe is fixedly connected to the front end of the gun body, and the connecting pipe connects the cavity inside the gun body with the atomizing chamber; the internal cross-sectional dimension of the atomizing chamber is larger than the internal cross-sectional dimension of the connecting pipe, and the atomizing chamber forms an enlarged space in front of the connecting pipe; a liquid atomizing chamber is fixedly connected to the top of the atomizing element, and a sealed filling port is provided at the top of the liquid atomizing chamber, and the liquid atomizing chamber is filled with liquid mosquito repellent.

[0012] Preferably, the vortex ring generator includes, in sequence along the direction of airflow movement, a converging section, a short straight pipe throat, and a sharp-edge outlet; the converging section is located between the launch channel and the short straight pipe throat, and the internal cross-sectional dimensions of the converging section gradually decrease from one end of the launch channel to the other end of the short straight pipe throat; the short straight pipe throat connects the converging section and the sharp-edge outlet, and the internal cross-sectional dimensions of the short straight pipe throat remain constant along the axial direction; the sharp-edge outlet is located at the end of the short straight pipe throat, and the pipe wall cross-section at the end of the short straight pipe throat has an acute-angled structure to form the sharp-edge outlet. When the airflow is ejected from the sharp-edge outlet, a fluid shear layer is generated at the edge of the sharp-edge outlet, and the airflow is entangled by the shearing action to form a closed air vortex ring.

[0013] Preferably, the inner wall of the contraction section is inclined to form a contraction angle, the angle of which is limited to 15 degrees to 30 degrees; the axial length of the short straight pipe throat is limited to 0.5 to 1 times the inner diameter of the sharp edge outlet.

[0014] Preferably, the airflow generation and energy storage assembly includes a piston slidably connected to the inner wall of the gun body cavity; the total distance the piston slides inside the gun body cavity is defined as the piston stroke, and the inner diameter of the sharp-edge outlet is defined as the outlet diameter; the ratio of piston stroke to outlet diameter is limited to the range of 3.5 to 4.5.

[0015] The second aspect of the present invention provides a mosquito repellent mist vortex ring directional projection device and its control system, including the mosquito repellent mist vortex ring directional projection device described in any preferred embodiment of the first aspect of the present invention, and the control system; The control system includes a control module disposed on the surface of the handheld part and a trigger switch linked to the trigger; When the trigger is rotated to the first stroke area, it touches and closes the trigger switch. The control module outputs a drive signal to the atomizing element inside the projection mechanism, which converts the liquid mosquito repellent into micron-sized droplets and gathers them in the mist-containing cavity. When the trigger deflects to the end of the second stroke, the airflow generation and the energy storage component generate a momentary high-pressure airflow; The control module, through timing coordination with the mechanical actuator, achieves physical separation of the pre-atomization operation and the instantaneous projection operation in terms of time sequence.

[0016] This invention provides a mosquito repellent mist vortex directional projection device and its control system. It has the following beneficial effects: 1. This invention, by setting a vortex ring generator structure at the outlet of the launch channel, which sequentially includes a contraction section, a short straight pipe throat, and a sharp-edge outlet, utilizes the change in the flow channel cross-section to accelerate and stabilize the airflow, and combines the fluid shearing and swirling effect at the edge of the sharp-edge outlet to shape the airflow and the pesticide droplets it encapsulates into a stable air vortex ring. This overcomes the shortcomings of conventional spraying methods, such as short effective distance and easy dispersion, and achieves the technical effect of long-distance directional delivery of mosquito repellent to distant target areas.

[0017] 2. This invention, through the coordinated operation of the control module, airflow generation, mechanical triggering mechanism, and trigger switch, physically separates the operation of preparing the drug mist by the atomizing element from the projection operation of generating high-pressure airflow by the piston action in a time sequence. This allows a fixed amount of mosquito repellent to be converted into micron-sized drug droplets under static pressure and to accumulate inside the drug mist containing cavity. This eliminates the adverse effects of airflow disturbance on droplet formation and prevents premature drug escape, achieving precise control of the amount of drug sprayed per spray and reducing the risk of users inhaling free drug.

[0018] 3. This invention utilizes an airflow generation and mechanical triggering mechanism consisting of a compression spring, a piston, a traction belt, and a release pin to convert the elastic potential energy stored in the compression spring into an instantaneous high-pressure airflow. By adjusting the piston's retraction distance, the stored energy of the compression spring can be adjusted to adapt to the range requirements of different spatial environments. At the same time, by relying on the air vortex ring to wrap the drug droplets and attach them to the target, it replaces the physical impact of conventional instruments, achieving the technical effects of eliminating insect splash pollution and improving the hygiene and safety of user operation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a mosquito repellent mist vortex ring directional projection device proposed in this invention. Figure 2 This is a partial cross-sectional view of the main body of the gun barrel of the mosquito repellent mist vortex directional projection device proposed in this invention; Figure 3 This is a schematic diagram of the piston and gun body of a mosquito repellent mist vortex directional projection device proposed in this invention in a separated state. Figure 4 This invention proposes a mosquito repellent mist vortex directional projection device. Figure 3 Enlarged structural diagram of section A; Figure 5 This is a schematic diagram of the rack structure of a mosquito repellent mist vortex ring directional projection device proposed in this invention; Figure 6 This is a schematic diagram of the system flow of a mosquito repellent mist vortex directional projection device proposed in this invention.

[0020] The components are as follows: 1. Main body of the gun; 2. Handheld part; 3. Projection mechanism; 31. Piston; 32. Compression spring; 33. Bolt handle; 34. Connecting pipe; 35. Atomizing chamber; 36. Atomizing element; 37. Liquid agent storage chamber; 38. Launching channel; 39. Gear; 310. Trigger; 311. Traction belt; 312. Guide wheel; 313. Release pin; 314. Connecting spring; 315. Rack; 4. Control module. Detailed Implementation

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example: See attached document Figures 1 to 6 The present invention provides a mosquito repellent mist vortex ring directional projection device and its control system. The mosquito repellent mist vortex ring directional projection device includes: a gun body 1, a handheld part 2 disposed at the bottom of the gun body 1, and a projection mechanism 3 disposed inside the gun body 1. The control system includes a control module 4 disposed on the surface of the handheld part 2 and a trigger switch linked to the trigger 310.

[0023] The main body 1 of the gun is a hollow shell structure. The inner cavity of the main body 1 forms the basic space for airflow generation and component installation. The handheld part 2 is fixedly connected to the area near the rear end of the lower surface of the main body 1 to provide grip support. The control module 4 in the control system is integrated on the surface of the handheld part 2.

[0024] The projection mechanism 3 is arranged through the axial direction of the gun body 1. The rear section of the projection mechanism 3 is arranged with an airflow generation and energy storage component, the middle section is arranged with a mosquito-killing mist preparation and containment component, and the front section extends to the outside of the gun body 1 to form a vortex ring generation and emission component.

[0025] The working principle of this mosquito repellent mist vortex ring directional projection device is achieved through the time-sequential coordination of the mechanical actuator and the electronic control system. The mosquito repellent mist vortex ring directional projection device is first in the energy storage and locking stage. The control module 4 drives the motor inside the gun body 1 to rotate, or the user pulls the lever handle 33 backward. The motor power or manual force drives the piston 31 inside the projection mechanism 3 to slide backward, compressing the compression spring 32 behind the piston 31. This causes the compression spring 32 to deform and accumulate elastic potential energy. When the piston 31 moves backward to the set stroke position, the release pin 313 engages with the piston 31, locking the piston 31 axially. At this time, the cavity inside the gun body 1 is in a static state, with no airflow output.

[0026] After energy storage is completed, the process enters the mist preparation stage. The user pulls the trigger 310. When the trigger 310 rotates to the first stroke area, it touches and closes the trigger switch. The control module 4 outputs a drive signal to the atomizing element 36 inside the projection mechanism 3. The atomizing element 36 starts within a preset time, converting the liquid mosquito repellent into micron-sized mist droplets. The atomized mist droplets are released and naturally settle into the mist receiving cavity 35 at the front. Since the piston 31 is locked at this time, the mist receiving cavity 35 maintains a windless environment, and the droplets gather in the mist receiving cavity 35.

[0027] After atomization is completed, the release and projection phase begins. The user continues to pull the trigger 310 to the end of the second stroke. The rotation of the trigger 310 pulls the release pin 313 downward through the internal traction belt 311, causing the release pin 313 to disengage from the limiting slot of the piston 31. The piston 31 loses its locking constraint and slides forward rapidly along the cavity of the gun body 1 under the restoring force of the compression spring 32, compressing the air in front of the piston 31 to generate an instantaneous high-pressure airflow.

[0028] A sudden high-pressure airflow rushes into the insecticide mist receiving chamber 35 through the connecting pipe, propelling the mosquito-killing insecticide mist gathered inside the chamber 35 forward and into the launching channel 38. The airflow carrying the insecticide droplets rushes out of the outlet at the end of the launching channel 38 at high speed. Due to the speed difference between the airflow center and the edge of the pipe wall, the airflow generates fluid shearing and entanglement at the outlet edge, forming a closed vortex ring structure. The mosquito-killing insecticide droplets are distributed inside the vortex ring and fly directionally with the vortex ring to the distant target area. Subsequently, the vortex ring collapses, and the insecticide droplets adhere to the surface of mosquitoes and flies, producing a killing effect.

[0029] The projection mechanism 3 contains an airflow generation and mechanical triggering mechanism.

[0030] The projection mechanism 3 includes a piston 31 that is slidably connected to the inner wall of the cavity of the gun body 1. The rear end of the piston 31 is elastically connected to the inner wall of the cavity of the gun body 1 through a compression spring 32. One end of the compression spring 32 is fixedly connected to the rear end of the piston 31, and the other end of the compression spring 32 is fixedly connected to the inner side wall of the gun body 1. A sealing ring is embedded on the outer periphery of the piston 31, and the piston 31 and the inner wall of the cavity of the gun body 1 form a sliding sealing fit.

[0031] The rear end of the piston 31 is fixedly connected to a bolt handle 33. The bolt handle 33 passes through and slides on the inner wall of the rear end of the main body 1. One end of the bolt handle 33 is exposed outside the main body 1. Pulling the bolt handle 33 backward causes the piston 31 to move backward, and the backward movement of the piston 31 compresses the compression spring 32.

[0032] A trigger 310 is rotatably connected to the inner side wall at the bottom of the main body 1 of the gun. A traction belt 311 is wound around the rotation center axis of the trigger 310. A release pin 313 is hinged to the end of the traction belt 311 away from the trigger 310. The release pin 313 is slidably connected to the bottom of the inner wall of the main body 1 of the gun. A groove is opened on the lower surface of the piston 31. The outer wall of the release pin 313 is engaged with the inner wall of the groove on the lower surface of the piston 31.

[0033] The release pin 313 is elastically connected to the inner wall at the bottom of the gun body 1 via a connecting spring 314. One end of the connecting spring 314 is fixedly connected to the bottom of the outer wall of the release pin 313, and the other end of the connecting spring 314 is fixedly connected to the bottom of the inner wall of the gun body 1. The connecting spring 314 provides an upward elastic force to the release pin 313.

[0034] The outer arc surface of the traction belt 311 contacts the guide wheel 312, which is rotatably connected to the inner wall of the gun body 1. The guide wheel 312 changes the direction of the tension of the traction belt 311. A torsion spring is provided at the rotatable connection between the trigger 310 and the gun body 1, and the torsion spring provides a reset force to the trigger 310.

[0035] A control module 4 is provided on the surface of the handheld part 2. A rack 315 is fixedly connected to the outer arc surface of the piston 31 along the axial direction of the piston 31. A motor is provided on the inner wall of the top of the gun body 1. A gear 39 is fixedly connected to the output shaft of the motor. The gear 39 is rotatably connected to the inner side wall of the top of the gun body 1. The gear 39 meshes with the rack 315. A position detection switch is provided in the area near the rear end of the inner wall of the gun body 1. The control module 4 is electrically connected to the motor and the position detection switch respectively.

[0036] Control module 4 starts the motor, which drives gear 39 to rotate. Gear 39 meshes with rack 315, causing piston 31 to slide backward. As piston 31 slides backward, it compresses and stores energy in compression spring 32. When piston 31 moves to the contact position detection switch, the position detection switch sends a signal to control module 4. Control module 4 controls the motor to stop rotating. Release pin 313 slides upward under the action of connecting spring 314 and engages in the slot at the bottom of piston 31, completing the axial locking of piston 31.

[0037] Pulling the trigger 310 backward causes it to deflect around its rotation axis. When the trigger 310 deflects to the later part of its stroke, the rotation axis of the trigger 310 winds up the traction belt 311. The traction belt 311 changes direction via the guide wheel 312, pulling the release pin 313 downward. The release pin 313 moves downward and compresses the connecting spring 314. The release pin 313 disengages from the slot of the piston 31, releasing the piston 31 from its lock. The compression spring 32 rebounds and extends, pushing the piston 31 forward along the cavity of the main body 1. The piston 31 compresses the air in front of it, generating a directional airflow. Releasing the trigger 310 causes it to return to its original position under the action of the torsion spring, and the release pin 313 returns to its original position upward under the action of the connecting spring 314.

[0038] The projection mechanism 3 contains a structure for preparing and temporarily storing the drug mist.

[0039] A connecting pipe 34 is fixedly connected to the front end of the gun body 1. A powder atomizing chamber 35 is fixedly connected to the end of the connecting pipe 34 away from the gun body 1. A gas channel is provided inside the connecting pipe 34, and the connecting pipe 34 connects the cavity inside the gun body 1 with the powder atomizing chamber 35.

[0040] The top of the atomizing element 36 is fixedly connected to the top of the atomizing element 36, and the top of the liquid atomizing element 36 is fixedly connected to the liquid atomizing element 37. The top of the liquid atomizing element 37 is provided with a sealed filling port. The liquid atomizing element 37 is filled with liquid mosquito repellent, and the volume of the liquid atomizing element 37 is limited to 5 ml to 10 ml.

[0041] The atomizing element 36 is selected from ultrasonic atomizing plates, microporous atomizers or piezoelectric atomizing plates. The control module 4 is electrically connected to the atomizing element 36 and controls the start-up time and single working duration of the atomizing element 36.

[0042] After the trigger 310 is turned to activate the control module 4, the control module 4 controls the atomizing element 36 to start. The atomizing element 36 operates for 0.5 to 2 seconds, converting the liquid mosquito repellent in the drug storage chamber 37 into micron-sized drug droplets. The control module 4 controls the volume of the drug droplets generated in a single operation to be between 0.05 ml and 0.2 ml, and the particle size of the drug droplets is between 10 microns and 50 microns.

[0043] The atomizing element 36 delivers the converted drug droplets downwards into the drug mist receiving cavity 35. The internal cross-sectional dimension of the drug mist receiving cavity 35 is larger than the internal cross-sectional dimension of the connecting pipe 34, and the drug mist receiving cavity 35 forms an enlarged space in front of the connecting pipe 34.

[0044] During the time period when the atomizing element 36 generates drug droplets, the piston 31 is in an axially locked state, no high-pressure airflow is generated in the cavity inside the gun body 1, the drug mist receiving cavity 35 maintains a static pressure environment, and the drug droplets gather and are temporarily stored in the internal space of the drug mist receiving cavity 35, realizing the physical separation of the pre-atomization operation and the instantaneous projection operation.

[0045] The front end of the projection mechanism 3 includes a vortex ring generator.

[0046] The end of the aerosol receiving cavity 35 away from the connecting pipe 34 is fixedly connected to the launching channel 38. The outlet of the launching channel 38 is provided with a vortex ring generating port. The vortex ring generating port includes a converging section, a short straight pipe throat and a sharp edge outlet in sequence along the direction of airflow.

[0047] The contraction section is located between the launch channel 38 and the throat of the short straight pipe. The internal cross-sectional dimensions of the contraction section gradually decrease from one end of the launch channel 38 to the other end of the short straight pipe throat. The inner wall of the contraction section is inclined to form a contraction angle, which is limited to 15 degrees to 30 degrees. The flow velocity increases when the airflow enters and flows through the contraction section.

[0048] The short straight tube throat connects the contraction section and the sharp-edge outlet. The internal cross-sectional dimensions of the short straight tube throat remain constant along the axial direction. The axial length of the short straight tube throat is limited to 0.5 to 1 times the inner diameter of the sharp-edge outlet. The airflow accelerated by the contraction section remains stable when it flows through the short straight tube throat.

[0049] The sharp-edge outlet is located at the end of the throat of the short straight pipe. The cross-section of the pipe wall at the end of the throat of the short straight pipe has an acute angle structure to form the sharp-edge outlet. When the airflow is ejected from the sharp-edge outlet, a fluid shear layer is generated at the edge of the sharp-edge outlet. The airflow is sheared and entangled, thus forming a closed air vortex ring.

[0050] The mosquito repellent droplets pre-reserved inside the launch channel 38 are encased inside the air vortex ring when it is formed, and the mosquito repellent droplets fly directionally in space along with the air vortex ring.

[0051] The total distance that piston 31 slides inside the cavity of the gun body 1 is defined as piston stroke L, and the inner diameter of the sharp-edge outlet is defined as outlet diameter D. The ratio of piston stroke L to outlet diameter D, L / D, is limited to the range of 3.5 to 4.5. When the ratio L / D is within the range of 3.5 to 4.5, the air vortex ring ejected from the sharp-edge outlet has the maximum fluid kinetic energy, and the air vortex ring carries mosquito repellent droplets and flies them directionally towards the target area.

[0052] The control system includes a control module 4 disposed on the surface of the handheld part 2.

[0053] The control module 4 is equipped with an atomization control unit, a range adjustment unit, a safety interlock unit, and a dosage limit unit. The handheld part 2 is equipped with a range selection button and an energy storage trigger button. The control module 4 is electrically connected to the motor, the atomizing element 36, the position detection switch, and each trigger button.

[0054] The user inputs the distance setting signal by operating the range selection button. The range adjustment unit inside the control module 4 receives the distance setting signal and sets the target running stroke of the motor. When the user presses the energy storage trigger button, the control module 4 outputs drive current to the motor. The motor rotates and drives the piston 31 to slide backward. The control module 4 changes the backward distance of the piston 31 by controlling the rotation stroke of the motor, and adjusts the compression amount and stored elastic potential energy of the compression spring 32. The control module 4 adjusts the physical range of the air vortex ring in stages from 0.5 meters to 5 meters.

[0055] A safety switch is provided on the outer surface of the handheld part 2, and the safety switch is located adjacent to the trigger 310. The safety switch is connected in series with the safety interlock unit inside the control module 4. The control module 4 sets dual operation confirmation conditions. When the safety switch is in the closed state, the control module 4 opens the signal receiving channel of the trigger 310. The user must operate the safety switch and the trigger 310 at the same time to generate a complete triggering action. The control module 4 intercepts a single touch signal that does not meet the dual operation conditions to prevent the device from being triggered erroneously.

[0056] When the trigger 310 is rotated to the set stroke to close the trigger switch, the atomization control unit inside the control module 4 outputs the working voltage to the atomization element 36. The dosage limit unit inside the control module 4 records the real-time start-up duration of the atomization element 36. When the single start-up duration reaches the preset time node, the dosage limit unit cuts off the power supply to the atomization element 36.

[0057] The dosage limiting unit restricts the maximum amount of insecticide consumed by the atomizing element 36 in a single operation. The dosage limiting unit simultaneously calculates the total operating time of the atomizing element 36 and monitors the cumulative consumption of mosquito repellent. When the cumulative maximum amount of insecticide emitted reaches the upper limit set value of the capacity of the insecticide storage chamber 37, the dosage limiting unit locks the drive output port of the control module 4.

[0058] The projection mechanism 3 includes a barrel, an elastic diaphragm located at the rear end of the barrel, a pull rod connecting the elastic diaphragm, and a release buckle. The elastic diaphragm is made of silicone or rubber.

[0059] One end of the lever is fixedly connected to an elastic diaphragm, and the other end of the lever extends to the outside of the gun body 1. When the lever is pulled backward, the lever causes the elastic diaphragm to stretch and deform backward, and the elastic diaphragm deforms and accumulates elastic potential energy.

[0060] When the lever moves backward to the set position, the release latch locks the position of the lever. The front end of the barrel is connected to the firing channel 38, and the space inside the barrel in front of the elastic diaphragm forms the propellant mist receiving cavity 35.

[0061] When the user pulls the trigger 310 to the first stroke area, the control module 4 controls the atomizing element 36 to operate. The atomizing element 36 atomizes the mosquito repellent and delivers it into the atomizing cavity 35. The user continues to pull the trigger 310 to the second stroke end. The mechanical action of the trigger 310 releases the locking state of the release latch on the lever. The elastic diaphragm rebounds forward under the action of elastic force. The elastic diaphragm squeezes the air inside the barrel into the firing channel 38. The airflow carries the atomized droplets of the repellent that are pre-reserved inside the atomizing cavity 35 and sprays them out through the vortex ring generator, generating an air vortex ring.

[0062] The projection mechanism 3 includes a gas storage and release component.

[0063] The projection mechanism 3 includes a miniature air pump, an air tank, and a solenoid valve. The air outlet of the miniature air pump is connected to the air tank, and the air outlet of the air tank is connected to the aerosol receiving cavity 35 through the solenoid valve. The solenoid valve is a normally closed fast solenoid valve, and the front end of the aerosol receiving cavity 35 is fixedly connected to the launching channel 38.

[0064] The micro air pump operates and fills the air tank with air until the air pressure inside the air tank reaches the set pressure. The control module 4 is electrically connected to the micro air pump and the solenoid valve respectively.

[0065] When the user pulls the trigger 310, the trigger 310 sends a trigger signal to the control module 4. The control module 4 first controls the atomizing element 36 to operate. The atomizing element 36 atomizes the mosquito repellent and gathers it inside the mist receiving cavity 35. After the atomization process is completed, the control module 4 controls the solenoid valve to open, and the high-pressure air inside the air tank is released into the mist receiving cavity 35. The airflow pushes the gathered drug droplets into the launching channel 38 and flows through the vortex ring generator, generating a closed air vortex ring.

[0066] The internal structural details of the control circuit, micro switch, motor drive circuit, micro air pump, and ultrasonic atomizing plate involved in the foregoing embodiments can be implemented by those skilled in the art using existing technologies. The connection methods and working principles of the relevant circuits are well-known technologies in the field and will not be described in detail here.

[0067] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mosquito repellent mist vortex directional projection device, characterized in that, include: The gun body (1), the hand-held part (2) disposed at the bottom of the gun body (1), and the projection mechanism (3) disposed inside the gun body (1); The projection mechanism (3) is arranged through the axial direction of the gun body (1). The rear section of the projection mechanism (3) is provided with an airflow generation and energy storage component, the middle section is provided with a mosquito-killing mist preparation and containment component, and the front section extends to the outside of the gun body (1) to form a vortex ring generation and emission component. The mosquito repellent mist preparation and containment assembly includes a mist containment cavity (35) and an atomizing element (36) fixedly connected to the top of the mist containment cavity (35). The atomizing element (36) is used to convert the liquid mosquito repellent into micron-sized mist droplets and collect them in the mist containment cavity (35). The vortex ring generating and emitting assembly includes a emitting channel (38) and a vortex ring generating port disposed at the end outlet of the emitting channel (38); The airflow generating and energy storage component is used to generate instantaneous high-pressure airflow. The instantaneous high-pressure airflow rushes into the drug mist receiving cavity (35), pushing the mosquito-killing drug mist gathered inside to move forward and enter the launching channel (38). The airflow carrying drug droplets rushes out of the vortex ring generating port to generate fluid shearing and entanglement, forming a closed air vortex ring.

2. The mosquito repellent mist vortex directional projection device according to claim 1, characterized in that, The airflow generation and energy storage component is an airflow generation and mechanical triggering mechanism, which includes a piston (31) and a compression spring (32) that are slidably connected to the inner wall of the cavity of the gun body (1). The rear end of the piston (31) is elastically connected to the inner wall of the cavity of the gun body (1) by the compression spring (32). A sealing ring is embedded on the outer periphery of the piston (31). The piston (31) and the inner wall of the cavity of the gun body (1) form a sliding sealing fit. The piston (31) moves backward to compress the compression spring (32) and accumulate elastic potential energy.

3. The mosquito repellent mist vortex directional projection device according to claim 2, characterized in that, The airflow generation and mechanical triggering mechanism also includes a trigger (310), a traction belt (311), and a release pin (313); The trigger (310) is rotatably connected to the inner side wall at the bottom of the gun body (1). The rotation center axis of the trigger (310) is around the traction belt (311), and the release pin (313) is hinged to the end of the traction belt (311) away from the trigger (310). The piston (31) has a groove on its lower surface. The release pin (313) is slidably connected to the bottom end of the inner wall of the gun body (1). The outer wall of the release pin (313) is engaged with the inner wall of the groove on the lower surface of the piston (31) to complete the axial locking of the piston (31). Pulling the trigger (310) backward winds up the traction belt (311), and pulling down the release pin (313) disengages it from the slot of the piston (31), thus releasing the lock on the piston (31).

4. The mosquito repellent mist vortex directional projection device according to claim 3, characterized in that, The outer arc surface of the traction belt (311) contacts the guide wheel (312), which is rotatably connected to the inner wall of the gun body (1). The guide wheel (312) is used to change the direction of the tension of the traction belt (311). The release pin (313) is elastically connected to the inner wall at the bottom of the gun body (1) by a connecting spring (314), and the connecting spring (314) provides an upward elastic force to the release pin (313); A torsion spring is provided at the rotatable connection between the trigger (310) and the gun body (1), and the torsion spring provides a restoring force to the trigger (310).

5. The mosquito repellent mist vortex directional projection device according to claim 2, characterized in that, The airflow generation and mechanical triggering mechanism also includes a motor and gears (39); A rack (315) is fixedly connected to the outer arc surface of the piston (31) along the axial direction of the piston (31); The motor is provided on the inner wall of the top of the gun body (1). The output shaft of the motor is fixedly connected to the gear (39). The gear (39) is rotatably connected to the inner side wall of the top of the gun body (1). The gear (39) meshes with the rack (315) for transmission.

6. The mosquito repellent mist vortex directional projection device according to claim 1, characterized in that, A connecting pipe (34) is fixedly connected to the front end of the gun body (1), and the connecting pipe (34) connects the cavity inside the gun body (1) with the aerosol receiving cavity (35). The internal cross-sectional dimension of the drug mist receiving cavity (35) is larger than the internal cross-sectional dimension of the connecting pipe (34), and the drug mist receiving cavity (35) forms an enlarged diameter space in front of the connecting pipe (34); The top of the atomizing element (36) is fixedly connected to a liquid medicine storage chamber (37), and a sealed filling port is provided on the top of the liquid medicine storage chamber (37). The liquid medicine storage chamber (37) is filled with the liquid mosquito repellent.

7. The mosquito repellent mist vortex directional projection device according to claim 1, characterized in that, The vortex ring generator, along the direction of airflow movement, includes, in sequence, a constriction section, a short straight tube throat, and a sharp-edge outlet. The contraction section is located between the emission channel (38) and the short straight tube throat, and the internal cross-sectional dimension of the contraction section gradually decreases from one end of the emission channel (38) to the end of the short straight tube throat; The short straight tube throat connects the constriction section and the sharp edge outlet, and the internal cross-sectional dimensions of the short straight tube throat remain constant along the axial direction. The sharp-edge outlet is located at the end of the short straight pipe throat. The pipe wall at the end of the short straight pipe throat has an acute-angled cross-section to form the sharp-edge outlet. When the airflow is ejected from the sharp-edge outlet, a fluid shear layer is generated at the edge of the sharp-edge outlet. The airflow is sheared and entangled to form a closed air vortex ring.

8. The mosquito repellent mist vortex directional projection device according to claim 7, characterized in that, The inner wall of the contraction section is inclined to form a contraction angle, and the angle of the contraction angle is limited to 15 degrees to 30 degrees; The axial length of the short straight tube throat is limited to 0.5 to 1 times the inner diameter of the sharp-edge outlet.

9. A mosquito repellent mist vortex directional projection device according to claim 7, characterized in that, The airflow generation and energy storage assembly includes a piston (31) that is slidably connected to the inner wall of the cavity of the main body (1) of the gun body; The total distance the piston (31) slides inside the cavity of the gun body (1) is defined as the piston stroke, and the inner diameter of the sharp-edge outlet is defined as the outlet diameter; The ratio of the piston stroke to the outlet diameter is limited to the range of 3.5 to 4.

5.

10. A mosquito repellent mist vortex directional projection device and its control system, characterized in that, Includes the mosquito repellent mist vortex directional projection device as described in any one of claims 1 to 9, and a control system; The control system includes a control module (4) disposed on the surface of the handheld part (2) and a trigger switch linked to the trigger (310); When the trigger (310) rotates to the first stroke area, it touches and closes the trigger switch. The control module (4) outputs a drive signal to the atomizing element (36) inside the projection mechanism (3), converting the liquid mosquito repellent into micron-sized drug droplets and accumulating them in the drug mist containment cavity (35), thus entering the drug mist preparation stage. When the trigger (310) deflects to the end of the second stroke, the airflow generation and the energy storage component generate an instantaneous high-pressure airflow, entering the release and projection stage; The control module (4) achieves physical separation of the pre-atomization operation and the instantaneous projection operation in time sequence through timing coordination with the mechanical actuator.

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