CN221951471U - A sprayer - Google Patents

Abstract

The utility model belongs to the technical field of sprayers, and in particular relates to a sprayer, which comprises: a housing; the air duct assembly is at least partially arranged in the shell, and comprises an air duct and a fan, wherein the fan is at least partially arranged in the air duct; the spraying system is at least partially arranged in the shell and comprises a spray head, and the spray head is arranged at one end of the air outlet of the air duct. According to the utility model, the air duct component is added in the sprayer, and air flow generated by the air duct component can act on mist sprayed by the spray head, so that the spraying uniformity is improved; in addition, the air duct component is in different working states, the spraying range of the sprayer is also different, and different use requirements can be met.

Description

A sprayer

Technical Field

The utility model belongs to the technical field of sprayers, and in particular relates to a sprayer.

Background Art

Sprayers can be used for cleaning, irrigation, spraying medicines, and other scenarios. When using a sprayer, users generally hope that the mist can adhere to the surface of the object as fully as possible. However, in actual applications, the mist sprayed by traditional sprayers can only adhere to the upper surface of the object, and the mist on the side or bottom of the object is easy to drip under the action of gravity, and the working fluid adheres unevenly. In addition, the spray range of the sprayer in the prior art is fixed, which is difficult to meet the use requirements of different scenarios.

Utility Model Content

In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a sprayer that can meet the requirements of different spraying ranges.

In order to achieve the above-mentioned object and other related objects, the utility model provides a sprayer, comprising:

case;

an air duct assembly, at least partially disposed in the housing, the air duct assembly comprising an air duct and a fan, the fan being at least partially disposed in the air duct;

A spray system is at least partially disposed in the shell, and the spray system comprises a spray head, and the spray head is installed at one end of the air outlet of the air duct.

In an optional embodiment of the present invention, the fan is located at the other end of the air duct opposite to the air outlet.

In an optional embodiment of the present invention, it further includes a liquid storage container and a battery pack, wherein the liquid storage container is located at one end of the shell, and the battery pack is located at the other end of the shell opposite to the liquid storage container.

In an optional embodiment of the present invention, it also includes a controller and a first control signal input module, the controller is electrically connected to the fan, the first control signal input module is electrically connected to the controller, and the controller is configured to control the start and stop and/or speed of the fan according to the control signal input by the first control signal input module.

In an optional embodiment of the utility model, the spray system also includes a pipe assembly, the side wall of the air duct is provided with a through hole for the pipe assembly to pass through, a nozzle holder is provided at one end of the air duct close to the air outlet, the nozzle is detachably mounted on the nozzle holder, and the nozzle is connected to the pipe assembly.

In an optional embodiment of the utility model, it also includes an electrostatic generating unit and an electrode, wherein the electrostatic generating unit is installed on the shell, the positive pole of the electrostatic generating unit is electrically connected to the electrode, the spray system has a cavity that limits the working fluid containing space and/or flow path, and at least part of the structure of the electrode is exposed in the cavity.

In an optional embodiment of the present invention, it also includes a controller and a second control signal input module, the controller is electrically connected to the electrostatic generating unit, the second control signal input module is electrically connected to the controller, and the controller is configured to control the start and stop of the electrostatic generating unit according to the control signal input by the second control signal input module.

In an optional embodiment of the present invention, the spray system further includes a liquid storage container, and at least a portion of the structure of the electrode is exposed in an inner cavity of the liquid storage container.

In an optional embodiment of the present invention, the spray system further includes a pipeline component, and at least a portion of the structure of the electrode is exposed in the lumen of the pipeline component.

In an optional embodiment of the utility model, it also includes a trigger, which is movably connected to the shell, and the trigger is configured to control the working state of the spray system. A conductive part is provided on the trigger, and at least part of the structure of the conductive part is exposed in an area on the surface of the trigger that can be touched by a finger, and the conductive part is electrically connected to the negative pole of the electrostatic generating unit.

In an optional embodiment of the present utility model, a spring is provided between the trigger and the housing, the spring is assembled so that its elastic force can drive the trigger in a pressed state to reset, the spring is made of a conductor, the conductive part is electrically connected to the spring, and the spring is electrically connected to the negative pole of the electrostatic generating unit.

In an optional embodiment of the present invention, a wiring terminal is provided in the shell, one end of the spring abuts against the wiring terminal, and the wiring terminal is electrically connected to the negative pole of the static electricity generating unit through a wire.

In an optional embodiment of the utility model, the spray system includes an infusion pump, a start-stop switch and a controller are provided in the shell, the start-stop switch and the infusion pump are electrically connected to the controller, and the trigger is configured to be able to drive the start-stop switch to turn on or off.

The technical effect of the utility model is that: the utility model adds an air duct component in the sprayer, and the airflow generated by the air duct component can act on the mist water sprayed by the nozzle, so as to improve the uniformity of spraying; in addition, when the air duct component is in different working states, the spraying range of the sprayer is also different, which can adapt to different usage requirements.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a perspective view of a sprayer provided by an embodiment of the utility model;

FIG2 is a perspective view of the sprayer provided by an embodiment of the utility model from another perspective;

FIG3 is an exploded view of a sprayer provided in an embodiment of the present utility model;

FIG4 is an exploded view of the sprayer provided by an embodiment of the utility model from another perspective;

FIG5 is a cross-sectional view of a sprayer provided by an embodiment of the utility model;

FIG6 is a partial cross-sectional view of a sprayer provided by an embodiment of the utility model;

7 is a perspective view of the internal structure of the sprayer provided in an embodiment of the present utility model;

FIG8 is a perspective view of the internal structure of the sprayer provided by an embodiment of the present utility model from another perspective;

FIG9 is a cross-sectional view of a liquid inlet pipe assembly provided in an embodiment of the present utility model;

FIG10 is an exploded view of a liquid inlet pipe assembly provided in an embodiment of the present utility model;

FIG11 is a schematic perspective cross-sectional view of the trigger assembly provided in an embodiment of the present utility model;

FIG12 is a schematic diagram of a three-dimensional plan view of the trigger assembly provided by an embodiment of the present utility model from another perspective;

FIG. 13 is an exploded view of the cross-sectional structure of the trigger assembly provided in an embodiment of the present utility model.

DETAILED DESCRIPTION

The following describes the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

It should be noted that the illustrations provided in the following embodiments are only used to schematically illustrate the basic concept of the present invention, and thus the illustrations only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

A sprayer is a device used to convert liquid into mist or fine particles and spray it out. It usually consists of several main parts such as a liquid container, a pump, and a nozzle. A sprayer usually has a liquid storage container for liquid, such as a spray bottle. This container is usually located at the bottom or side of the sprayer and is used to store the liquid to be sprayed, such as water, detergent, pesticide, etc. The sprayer usually uses a pump to extract the liquid from the storage container and provide the spray pressure. The pump can be manually operated or electrically or pneumatically driven. The nozzle is the most critical part of the sprayer. It converts the liquid into fine particles and sprays it out. The nozzle usually has a small hole or a fine structure, which atomizes the liquid into fine particles through pressure and forms a sprayed mist.

Sprayers have a wide range of uses, such as in agriculture, cleaning and disinfection, public health, beauty and personal care. Sprayers are often used in the agricultural field to spray pesticides, fertilizers or other liquid agricultural additives to protect crops from pests and diseases and malnutrition. Sprayers can be used to clean and disinfect various surfaces, such as furniture, floors, glass, and car interiors. Sprayers are widely used in public health, such as disinfection and sterilization in public transportation, hospitals, schools, offices and other spaces. Sprayers can be used to spray beauty and skin care, spray perfumes, lotions and other products to provide a comfortable user experience.

The mist sprayed by existing sprayers generally adheres to the surface of objects only through their own tension. The mist easily slides down under the action of gravity, resulting in uneven liquid adhesion on the surface of the object. In addition, the liquid that can be sprayed by the sprayer often has a specific spray distance and spray angle, so its spray range is limited. Most sprayers can only cover a small area and require multiple sprays to cover a larger area.

Based on the above defects, the utility model adds an electrostatic device in the sprayer, which can charge the working fluid so that the sprayed mist water has its own charge, thereby ensuring that the mist water can fully and evenly adhere to the surface of the object. In addition, the utility model also adds an air duct device. The airflow generated by the air duct device can act on the mist water. The user can adjust the wind force according to actual needs, thereby changing the spray distance of the mist water.

Please refer to Figures 1-13, and the technical solution of the present invention will be described in detail below in conjunction with specific embodiments:

1-5 , the sprayer provided in the embodiment of the present invention includes a housing 100 , an air duct assembly and a spray system.

It should be understood that the shape of the shell 100 determines the appearance of the sprayer. In the present invention, there is no special limitation on the specific shape of the shell 100. For example, in a specific embodiment, the shell 100 can be configured as a gun shape. In other embodiments, the shell 100 can also be configured as a kettle shape, a long handle shape, or other shapes that are convenient for human hand holding and use. In a specific embodiment, in order to facilitate the processing of the shell 100 itself and the assembly between the shell 100 and other components, the shell 100 can be configured as two half shells 102, which are connected in a detachable manner and enclose a cavity for accommodating other components.

The air duct assembly is at least partially placed in the housing 100, and the air duct assembly includes an air duct 21 and a fan 22, and the fan 22 is at least partially placed in the air duct 21; the shape of the air duct 21 is not particularly limited. Specifically, the shape of the air duct 21 can be set according to the structure of the housing 100 and the spatial layout of other components. For example, in a specific embodiment, the air duct 21 can be set to a straight cylinder shape. The air duct 21 of this structure can minimize wind resistance and save the internal space of the sprayer. It should be understood that the air duct 21 can also be set to other shapes, as long as it is ensured that the airflow can flow smoothly in the air duct 21. For example, the air duct 21 can also be set to an L shape or a U shape, or the air duct 21 can be set to two coaxially arranged straight cylinders, so that the airflow passes through the interlayer between the two straight cylinders. The specific type of the fan 22 is also not particularly limited. For example, it can be an axial flow fan 22 or a centrifugal fan 22. In a specific embodiment, in order to save space, an axial flow fan 22 is preferably used, and the axial flow fan 22 can be directly installed in the air duct 21.

The spray system is at least partially placed in the housing 100, and the spray system includes a nozzle 15, which is installed at one end of the air outlet of the air duct 21. It should be noted that the nozzle 15 described in the utility model is installed at one end of the air outlet of the air duct 21, including both the nozzle 15 installed on the inside of the air outlet and the nozzle 15 installed on the outside of the air outlet, as long as the airflow generated by the air duct component can act on the mist sprayed by the nozzle 15. It should be understood that the spray system should include necessary pipeline components in addition to the nozzle 15, and the spray system can be provided with a special liquid storage container 11, or it can be connected to an external container.

The utility model adds an air duct component to the sprayer, and the airflow generated by the air duct component can act on the mist water sprayed by the nozzle 15, so as to improve the uniformity of spraying; in addition, when the air duct component is in different working states, the spraying range of the sprayer is also different, which can adapt to different usage requirements.

Please refer to FIG. 5 . In an optional embodiment of the present invention, the fan 22 is located at the other end of the air duct 21 opposite to the air outlet. This can facilitate the arrangement of the pipes of the spray system and avoid interference between the fan 22 and the pipes of the spray system. On the other hand, the fan 22 is closer to the air inlet of the air duct 21, which can reduce the suction resistance. In a further specific embodiment, the diameter of the air inlet of the air duct 21 can be larger than the diameter of the air outlet, so that the air flow is compressed when passing through the air duct 21, and the air supply efficiency is improved when the fan power is constant.

Please refer to FIGS. 1, 2 and 5. In an optional embodiment of the present invention, a liquid storage container 11 and a battery pack 60 are further included. The liquid storage container 11 is located at one end of the housing 100, and the battery pack 60 is located at the other end of the housing 100 opposite to the liquid storage container 11. Taking a gun-shaped housing as an example, the housing 100 may include a barrel portion and a handle portion, the liquid storage container 11 may be installed at the lower end of the handle portion, and the battery pack 60 may be installed above the rear end of the barrel portion. This layout can make the center of gravity of the sprayer fall near the handle portion, and the user can hold the sprayer to spray at multiple angles more labor-saving. It should be understood that the installation positions of the liquid storage container 11 and the battery pack 60 are not unique. For example, in some other embodiments, the battery pack 60 may be placed at the lower end of the handle portion, and the liquid storage container 11 may be placed at the upper end of the barrel portion, or the battery pack 60 and the liquid storage container 11 may be placed on the front and rear sides or the left and right sides of the handle portion, respectively.

Please refer to FIG8 . In an optional embodiment of the present invention, the sprayer further includes a controller 40 and a first control signal input module 42. The controller 40 is electrically connected to the fan 22. The first control signal input module 42 is electrically connected to the controller 40. The controller 40 is configured to control the start and stop and/or speed of the fan 22 according to the control signal input by the first control signal input module 42. In a specific embodiment, the first control signal input module 42 may be, for example, a button. The controller 40 may pre-store a control strategy. The control strategy may generate corresponding control instructions according to the pressing state of the button. For example, the start and stop or gear switching of the fan 22 may be controlled according to the number of times the button is pressed or the pressing duration. It should be understood that the specific type of the first control signal input module 42 is not unique. For example, in some other embodiments, the first control signal input module 42 may also be a knob, a touch panel or other types of control signal input elements.

The user can control the start and stop and the speed of the motor through the first control signal input module 42, which can change the size of the wind force acting on the mist water, thereby changing the spraying distance and spraying range of the sprayer to meet different usage requirements.

Please refer to Figures 5 and 7. In an optional embodiment of the present invention, the side wall of the air duct 21 is provided with a through hole for the pipe assembly to pass through. A nozzle holder is provided at one end of the air duct 21 near the air outlet. The nozzle 15 is detachably mounted on the nozzle holder, and the nozzle 15 is connected to the pipe assembly. In this embodiment, a through hole is provided on the air duct 21 to facilitate the installation of the pipe assembly. It should be understood that the through hole is not necessary. For example, in some other embodiments, the pipe assembly can also be connected to the air duct 21 through the end of the air duct 21. However, this method will affect the overall appearance quality of the sprayer and increase the difficulty of installation. Therefore, providing a through hole on the air duct 21 is a more preferred embodiment.

Please refer to Figures 5, 7, and 8. In an optional embodiment of the present invention, it also includes an electrostatic generating unit 50 and an electrode 51. The electrostatic generating unit 50 is installed on the shell 100. The positive pole of the electrostatic generating unit 50 is electrically connected to the electrode 51. The spray system has a cavity that limits the working fluid containing space and/or flow path, and at least part of the structure of the electrode 51 is exposed in the cavity.

The electrostatic generating unit 50 of the utility model is used to charge the liquid spray, which can make the liquid carry static charge, and the liquid can be reliably adsorbed on the surface of the object under the action of static electricity after being atomized. The electrostatic generating unit 50 includes a high-voltage generator, which is the core component of the electrostatic generating unit 50 and is responsible for generating high voltage. The high-voltage generator can use electronic circuits to convert low voltage into high voltage. The electrode 51 is a key component for introducing voltage into the working fluid, which can be a sharp conductive rod or filament. It should be understood that in order to maintain a stable electrical level, the electrostatic generating unit 50 should also include a ground electrode, which is used to consume the charge generated by the high-voltage generator. It can be a metal plate or a grounding wire to guide the excess charge to the ground.

Please refer to Figures 6, 8, 11-13. In a specific embodiment, a conductive portion 52 can be provided on the trigger 30 of the sprayer as a ground electrode. The conductive portion 52 is electrically connected to the negative electrode of the electrostatic generating unit 50. The excess charge generated by the electrostatic generating unit 50 can be conducted to the ground through the conductive portion 52 and the human body. It should be understood that the specific arrangement of the ground electrode is not unique. For example, in some other embodiments, the ground electrode can also be provided on the handle of the sprayer, but this method will cause the electrostatic generating unit 50 to continuously discharge, resulting in energy waste. When the ground electrode is provided on the trigger 30, the electrostatic generating unit 50 will only discharge when the sprayer is turned on. Therefore, it is a more preferred embodiment to provide the ground electrode on the trigger 30. The entire trigger 30 can also be provided as a conductive structure.

Please refer to Figures 4 and 8. In an optional embodiment of the present utility model, a second control signal input module 43 is further included. The controller 40 is electrically connected to the electrostatic generating unit 50. The second control signal input module 43 is electrically connected to the controller 40. The controller 40 is configured to control the start and stop of the electrostatic generating unit 50 according to the control signal input by the second control signal input module 43. Similar to the working principle of the first control signal input module 42, the second control signal input module 43 can be, for example, a button. The controller 40 can pre-store a control strategy, which can generate corresponding control instructions according to the pressing state of the button, for example, according to the number of times the button is pressed or the pressing time, to control the start and stop or gear switching of the electrostatic generating unit 50. It should be understood that the specific type of the second control signal input module 43 is not unique. For example, in some other embodiments, the second control signal input module 43 can also be other types of control signal input elements such as knobs and touch pads.

Please refer to FIGS. 3-5 , in an optional embodiment of the present invention, when the spray system includes a liquid storage container 11, at least part of the structure of the electrode 51 can be exposed in the inner cavity of the liquid storage container 11. In some other embodiments, when the spray system does not include the liquid storage container 11, at least part of the structure of the electrode 51 is exposed in the lumen of the pipe assembly. Of course, when the spray system includes the liquid storage container 11, the electrode 51 can also be exposed in the lumen of the pipe assembly.

Please refer to Figures 3-5, 9, and 10. Taking the electrode 51 disposed in the liquid storage container 11 as an example, the first end of the pipeline assembly is accommodated in the liquid storage container 11, the second end of the pipeline assembly is connected to the nozzle 15, and the electrode 51 is installed on the first end of the pipeline assembly; specifically, the pipeline assembly includes a main pipeline 13 and a liquid inlet pipe assembly 12, the liquid inlet pipe assembly 12 is fixedly connected to the shell 100, the liquid storage container 11 is detachably mounted on the shell 100, and the liquid inlet pipe assembly 12 is accommodated in the liquid storage container 11, one end of the main pipeline 13 is detachably connected to the liquid inlet pipe assembly 12, the other end of the main pipeline 13 is equipped with the nozzle 15, and the electrode 51 is installed on the liquid inlet pipe assembly 12.

In this embodiment, the electrode 51 is installed on the liquid inlet tube assembly 12, and the liquid inlet tube can effectively support the electrode 51. In addition, the liquid storage container 11 is generally detachable. In this embodiment, the electrode 51 is arranged on the liquid inlet tube assembly 12, and the problem of combining and separating the electrode 51 and the liquid storage container 11 is also solved. When the user disassembles the liquid storage container 11, the electrode 51 can be naturally separated from the liquid storage container 11 without additional operation, thereby improving the user experience.

Referring to FIGS. 9 and 10 , in an optional embodiment of the present utility model, the liquid inlet pipe assembly 12 includes a water pipe mounting seat 122 and a liquid inlet pipe 121. The water pipe mounting seat 122 is fixedly mounted on the housing 100. The water pipe mounting seat 122 is provided with a first pipe joint 1222 for connecting the liquid inlet pipe 121 and a second pipe joint 1221 for connecting the main pipeline 13. The water pipe mounting seat 122 is provided with a first wiring terminal 128. One end of the electrode 51 is electrically connected to the first wiring terminal 128. The other end of the electrode 51 is mounted on the liquid inlet pipe 121 at an end away from the water pipe mounting seat 122. The water pipe mounting seat 122 is provided with a mounting hole, a bolt 126 and a nut 127. The bolt 126 passes through the mounting hole and is connected to the nut 127. One of the second wiring terminal 128 and the electrode 51 is pressed between the nut 127 and the water pipe mounting seat 122, and the other is pressed between the bolt 126 and the water pipe mounting seat 122.

Please refer to FIGS. 9 and 10 . In an optional embodiment of the present invention, the liquid storage container 11 is provided with an opening, the water pipe mounting seat 122 is closely matched with the opening, and a sealing unit 125 is provided between the two. In an optional embodiment of the present invention, a water inlet joint 123 is provided at one end of the liquid inlet pipe 121 away from the water pipe mounting seat 122, a water inlet filter 124 is provided on the water inlet joint 123, and a sealing ring 1231 is provided between the water inlet joint 123 and the water inlet filter 124; the electrode 51 is in the shape of a screw rod, and the electrode 51 is wound on the outer wall of the water inlet filter 124.

Referring to FIGS. 6-8 and 11-13, in an optional embodiment of the present invention, the trigger 30 is movably connected to the housing 100, the trigger 30 is configured to control the working state of the spray system, at least part of the structure of the conductive portion 52 is exposed in the area of the trigger 30 surface that can be touched by a finger, and the conductive portion 52 is electrically connected to the negative electrode of the static electricity generating unit 50. It should be understood that there is no special limitation on the movably connected mode between the trigger 30 and the housing 100, for example, the trigger 30 and the housing 100 may be hinged or slidably connected.

Please refer to Figures 2 and 11. In an optional embodiment of the present invention, at least part of the structure of the conductive portion 52 is exposed in the area on the surface of the trigger 30 that cooperates with the fingertips. This area is the area where the trigger 30 is in most sufficient contact with the hand. In this embodiment, the conductive portion 52 is arranged in this area to ensure a reliable electrical connection between the conductive portion 52 and the human body.

Please refer to Figures 6, 11-13. In an optional embodiment of the present utility model, a spring 31 is provided between the trigger 30 and the housing 100. The spring 31 is configured so that its elastic force can drive the trigger 30 in the pressed state to reset. The spring 31 is made of a conductor. The conductive portion 52 is electrically connected to the spring 31. The spring 31 is electrically connected to the negative pole of the static electricity generating unit 50. A second terminal 32 is provided in the housing 100. One end of the spring 31 abuts against the second terminal 32. The second terminal 32 is electrically connected to the negative pole of the static electricity generating unit 50 through a wire. In this embodiment, the spring 31 of the trigger 30 is used as a conductive medium between the conductive portion 52 and the static electricity generating unit 50, which simplifies the beam limiting installation structure.

Referring to FIGS. 11-13 , in an optional embodiment of the present utility model, the spring 31 includes a spiral portion and a lap portion 311, the trigger 30 is provided with a limit column 302, the spiral portion is sleeved with the limit column 302, and the lap portion 311 abuts against the conductive portion 52. A positioning portion 312 is provided between the spring 31 and the trigger 30 for preventing the spiral portion from rotating relative to the limit column 302. In a specific embodiment, the positioning portion 312 may be, for example, a U-shaped structure integrally bent and formed with the spring 31, and a positioning groove 301 cooperating with the positioning portion 312 may be provided on the trigger 30. The conductive portion 52 includes an electrode sheet, which is installed on the surface of the trigger 30. A lug 521 is provided on the edge of the electrode sheet. The lug 521 passes through the slot 303 provided on the trigger 30 and extends to the inner side of the trigger 30. The lug 521 is bent toward the inner wall of the trigger 30 and abuts against the inner wall of the trigger 30. The overlapping portion 311 of the spring 31 is electrically connected to the lug 521.

Please refer to Figures 3-5, 7, and 8. In an optional embodiment of the present invention, the spray system includes an infusion pump 14, a start-stop switch 41 is provided in the housing 100, the start-stop switch 41 and the infusion pump 14 are electrically connected to the controller 40, and the trigger 30 is configured to drive the start-stop switch 41 to turn on or off. In this embodiment, the sprayer is turned on or off by controlling the start and stop of the infusion pump 14, but it should be understood that the infusion pump 14 is not necessary. For example, in some other embodiments, the pipeline assembly can be connected to an external pump device, and the trigger 30 can only be used to control the on and off of the pipeline assembly.

In summary, the utility model adds an air duct component to the sprayer, and the airflow generated by the air duct component can act on the mist water sprayed by the nozzle 15, so as to improve the uniformity of the spraying; in addition, when the air duct component is in different working conditions, the spraying range of the sprayer is also different, which can adapt to different usage requirements; the electrostatic generating unit 50 of the utility model is used to charge the liquid spray, which can make the liquid carry static charge, and the liquid can be reliably adsorbed on the surface of the object under the action of static electricity after being atomized; the utility model sets a conductive part 52 on the trigger 30 of the sprayer as a ground electrode, and the conductive part 52 is electrically connected to the negative pole of the electrostatic generating unit 50, and the excess charge generated by the electrostatic generating unit 50 can be conducted to the ground through the conductive part 52 and the human body.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

In the description herein, many specific details, such as examples of components and/or methods, are provided to provide a complete understanding of the embodiments of the present invention. However, those skilled in the art will recognize that embodiments of the present invention may be practiced without one or more specific details or by other devices, systems, components, methods, components, materials, parts, etc. In other cases, well-known structures, materials, or operations are not specifically shown or described in detail to avoid obscuring aspects of the embodiments of the present invention.

Claims (10)

1. A sprayer, comprising: case; an air duct assembly, at least partially disposed in the housing, the air duct assembly comprising an air duct and a fan, the fan being at least partially disposed in the air duct; A spray system is at least partially disposed in the shell, and the spray system comprises a spray head, and the spray head is installed at one end of the air outlet of the air duct. 2 . The sprayer according to claim 1 , wherein the fan is located at the other end of the air duct opposite to the air outlet. 3. The sprayer according to claim 1, further comprising a liquid storage container and a battery pack, wherein the liquid storage container is located at one end of the shell, and the battery pack is located at the other end of the shell opposite to the liquid storage container. 4. The sprayer according to claim 1 is characterized in that it also includes a controller and a first control signal input module, the controller is electrically connected to the fan, the first control signal input module is electrically connected to the controller, and the controller is configured to control the start and stop and/or speed of the fan according to the control signal input by the first control signal input module. 5. The sprayer according to claim 1 is characterized in that the spray system also includes a pipe assembly, the side wall of the air duct is provided with a through hole for the pipe assembly to pass through, a nozzle bracket is provided at one end of the air duct close to the air outlet, the nozzle is detachably mounted on the nozzle bracket, and the nozzle is connected to the pipe assembly. 6. The sprayer according to claim 1 is characterized in that it also includes an electrostatic generating unit and an electrode, the electrostatic generating unit is installed on the shell, the positive pole of the electrostatic generating unit is electrically connected to the electrode, the spray system has a cavity that limits the working fluid containing space and/or flow path, and at least part of the structure of the electrode is exposed in the cavity. 7. The sprayer according to claim 6 is characterized in that it also includes a controller and a second control signal input module, the controller is electrically connected to the electrostatic generating unit, the second control signal input module is electrically connected to the controller, and the controller is configured to control the start and stop of the electrostatic generating unit according to the control signal input by the second control signal input module. 8. The sprayer according to claim 6, characterized in that the spray system further comprises a liquid storage container, and at least a part of the structure of the electrode is exposed in the inner cavity of the liquid storage container. 9. The sprayer according to claim 6, wherein the spray system further comprises a pipe assembly, and at least a portion of the structure of the electrode is exposed in a lumen of the pipe assembly. 10. The sprayer according to claim 6 is characterized in that it also includes a trigger, wherein the trigger is movably connected to the shell, and the trigger is configured to control the working state of the spray system, and a conductive part is provided on the trigger, and at least part of the structure of the conductive part is exposed in an area on the surface of the trigger that can be touched by a finger, and the conductive part is electrically connected to the negative pole of the electrostatic generating unit.