Cold spray ion generating device and air sterilization apparatus

Abstract

This application discloses a cold-spray ion generator, comprising a non-metallic shell, an ion-generating component, and a large resistor. At least one side of the non-metallic shell has a metal strip, at least partially exposed to the environment and accessible to a user. A high-voltage generating circuit assembly in the ion-generating component provides a negative high-voltage current to an ion-emitting electrode assembly, which generates and releases electrons into the environment under the influence of the negative high-voltage current. The large resistor is housed within a containment space, with one end electrically connected to the metal strip and the other end electrically connected to the high-voltage generating circuit assembly for grounding. This device can operate in both open and closed modes. In closed mode, it generates a directional cold-spray negative ion wind directed towards the user, thereby increasing the local concentration of negative oxygen ions around the user, improving local disinfection effects and the body's ability to ingest negative oxygen ions, while effectively preventing ozone exceedances.

Description

Technical Field

[0001] This application relates to the field of air disinfection technology, specifically to a cold spray ion generator and an air disinfection device. Background Technology

[0002] With my country's rapid economic growth and rising living standards, people have increasingly higher demands for a good living environment, especially for clean, unpolluted air. Particularly after the outbreak of the 2019 novel coronavirus (2019-nCoV), people have become more aware of the severity of infections caused by airborne pathogens such as bacteria and viruses, particularly respiratory infections. While the pathogenicity of the virus has significantly decreased recently due to the relaxation of control measures both domestically and internationally, its infectivity and ability to evade the immune system have increased considerably. Therefore, air disinfection equipment has received unprecedented market demand.

[0003] Negative ion disinfection equipment is one type of air disinfection equipment. Currently, most negative ion disinfection devices are large and difficult to move, limiting their effectiveness to the fixed space they occupy. Therefore, the applicant previously developed a portable negative ion disinfection device.

[0004] The ion generator is one of the main components of negative ion disinfection equipment (including portable negative ion disinfection equipment), and its common operating mode is open. Summary of the Invention

[0005] One objective of this application is to provide a cold spray ion generator that can achieve both open and closed operation modes. In closed operation, a directional cold spray negative ion wind is generated between the cold spray ion generator and the user, thereby increasing the local concentration of negative oxygen ions around the user and improving the local disinfection effect.

[0006] The first aspect of this application provides a cold-spray ion generator, comprising a non-metallic housing, an ion generating component, and a large resistor. The non-metallic housing forms a containment space, and a metal strip is disposed on at least one side of the non-metallic housing, with at least a portion of the metal strip exposed to the environment and accessible to a user. The ion generating component includes a high-voltage generating circuit assembly and an ion emitting electrode assembly. The high-voltage generating circuit assembly is disposed within the containment space and provides a negative high-voltage current to the ion emitting electrode assembly. The ion emitting electrode assembly generates and releases electrons into the environment under the influence of the negative high-voltage current. The large resistor is disposed within the containment space, with one end electrically connected to the metal strip and the other end electrically connected to the high-voltage generating circuit assembly for grounding via the high-voltage generating circuit assembly.

[0007] In one possible implementation of the first aspect, the large resistor is a megaohm-level resistor, and the current through the large resistor during operation of the cold-spray ion generator does not exceed the microampere level.

[0008] In one possible implementation of the first aspect, the ion emission electrode assembly includes at least one carbon brush, the top of which is exposed to the environment during operation; the surface of the cold-spray ion generator has a handheld area, the metal strip is located in the handheld area, and the carbon brush is located outside the handheld area.

[0009] In one possible implementation of the first aspect, the device further includes an object detection sensor and a control module; wherein the detection area of ​​the object detection sensor covers the top of the carbon brush; the control module is electrically connected to the object detection sensor and the high-voltage generating circuit assembly respectively, and the control module is used to send a stop command to the high-voltage generating circuit assembly upon receiving a preset signal from the object detection sensor.

[0010] In one possible implementation of the first aspect, the detection area of ​​the object detection sensor further covers a first sub-region of the handheld area, and the metal strip is located outside the first sub-region.

[0011] In one possible implementation of the first aspect, the surface of the cold-spray ion generator is provided with a convex accommodating cavity, and a viewing window is provided on the side of the accommodating cavity facing the carbon brush; the object detection sensor is disposed in the accommodating cavity facing the viewing window.

[0012] In one possible implementation of the first aspect, the large resistor is fixed to a first circuit board, and the device further includes a first connecting elastic member, a second connecting fastener, and a third connecting elastic member; wherein the second connecting fastener is used to fix the first circuit board in the receiving space and to electrically connect the first elastic member and the large resistor; the first connecting elastic member is used to electrically connect the metal strip and the second connecting fastener; and the third connecting elastic member is used to electrically connect the large resistor and the ground.

[0013] In one possible implementation of the first aspect, the high-voltage generating circuit assembly includes a high-voltage generating circuit board and a protective housing, wherein a portion of the high-voltage generating circuit board containing a transformer is located within the protective housing, and the protective housing is filled with insulating material.

[0014] The second aspect of this application provides an air disinfection device, which may include any of the cold spray ion generators of the first aspect.

[0015] In one possible implementation of the second aspect, the air disinfection device is a handheld device or a wearable device. Attached Figure Description

[0016] Figure 1 This application provides a schematic diagram of the structure of an exemplary cold-spray ion generator.

[0017] Figure 2 This is a partial structural schematic diagram of an exemplary cold-spray ion generator provided in an embodiment of this application.

[0018] Figure 3 This is a schematic diagram of a partial structure of an exemplary high-voltage generating circuit assembly provided in an embodiment of this application.

[0019] Figure 4 This is a schematic diagram of a partial structure of another exemplary high-voltage generating circuit assembly provided in this application embodiment.

[0020] Figure 5 This is a schematic diagram of an exemplary use scenario of the cold spray ion generator provided in the embodiments of this application.

[0021] Figure 6 This is a schematic diagram of the metal strip and high resistance related parts of the exemplary cold spray ion generator provided in this application embodiment.

[0022] Figure 7 This is a cross-sectional view of the structure related to the metal strip and high resistance in the exemplary cold-spray ion generator provided in this application embodiment.

[0023] Figure 8 This is a schematic diagram of the structure of an exemplary cold-spray ion generator provided in the embodiments of this application.

[0024] Figure 9 This is a schematic diagram of the structure of an exemplary cold-spray ion generator provided in the embodiments of this application from another perspective.

[0025] Figure 10 This is a schematic diagram of the structure of an object detection sensor in an exemplary cold-spray ion generator provided in this application embodiment.

[0026] Explanation of reference numerals in the attached figures:

[0027] Non-metallic outer shell 100; accommodating space 101; metal strip 102; side wall 103; upper cover 104; lower cover 105;

[0028] Ion generating component 200; high voltage generating circuit assembly 210; high voltage generating circuit board 211; transformer 2111; first pad 2112; high voltage circuit 2113; wire 212; protective shell 213; ion emission electrode assembly 220; ion emission circuit board 221; second pad 2211; carbon brush 222; top of carbon brush 2221;

[0029] Large resistor 301; first circuit board 302; first connecting elastic element 303; second connecting fastener 304; third connecting elastic element 305;

[0030] Object detection sensor 410; transmitter 411; receiver 412; ribbon cable 413; accommodating cavity 420; viewing window 421; detection area 430

[0031] Cold spray ion generator 800; handheld area 810; first sub-area 811; human body 900; hand 901. Detailed Implementation

[0032] To clearly and completely describe the technical solution of this application, further explanation will be provided below in conjunction with embodiments and accompanying drawings.

[0033] This application provides a cold spray ion generator that can operate in both an open and closed manner. In closed operation, the cold spray ion generator produces a cold spray ion wind that is directly and directionally blown towards the user, thereby increasing the local concentration of negative oxygen ions around the user, improving the local disinfection effect and the user's ability to ingest negative oxygen ions, while minimizing ozone exceedances.

[0034] See Figure 1 , Figure 2 and Figure 8 This application provides a cold spray ion generator, including a non-metallic housing 100, an ion generating component 200, and a large resistor 301.

[0035] The non-metallic housing 100 serves as a supporting structure for the cold-spray ion generator, primarily forming a receiving space 101. This space 101 can be used to house / install possible components, such as ion generating elements, high resistors, and sensors. The housing can be any possible shape, such as cylindrical or cuboid, and the receiving space can vary depending on the housing shape; this application does not limit this. For example, as... Figure 1 and Figure 8 As shown, the outer shell is in a cube-like shape, including a lower cover plate 105 and side walls 103, thus forming a semi-enclosed receiving space 101. Of course, the outer shell may also include components such as an upper cover plate 104 when necessary.

[0036] The outer casing is made of non-metallic materials, such as plastic, ceramic, rubber, and glass. It is understood that when the casing comprises multiple different components, these components can be made of the same or different materials. For example, the sidewalls can be made of plastic or ceramic, and the upper and lower covers can be made of plastic or glass; this application does not limit this. It is also understood that in some cases, the casing may contain localized metallic components or areas; this application does not limit this either, as long as it does not affect the normal operation of the cold-spray ion generator in the embodiments of this application, or affect the generation of the cold-spray ion wind.

[0037] A metal strip 102 is provided on at least one side of the non-metallic casing 100, and at least a portion of the metal strip 102 is exposed to the environment and can be touched by a user. This application does not limit the specific shape of the metal strip; it can be elliptical, square, oblong, irregularly shaped, etc., and it is not required to be strip-shaped, as long as it provides a certain contact surface for the user to access. For example, such as... Figure 1 and Figure 8 As shown, a metal strip 102 is provided on each of the two side walls 103 of the non-metallic casing 100. The two side walls of the casing each have an oblong opening, and the metal strip 102 is fitted into the oblong opening, with its outer surface exposed to the environment and flush with the outer surface of the non-metallic casing. When a user holds the cold-spray ion generator, they can come into contact with these metal strips. Alternatively, the metal strips can also be provided on the lower cover plate of the casing or in other easily accessible locations.

[0038] The ion generating component 200 is mainly used to generate and release electrons. In this embodiment, the ion generating component can be an existing ion generator or other possible structures.

[0039] In some possible implementations, the ion generator component 200 includes a high-voltage generation circuit assembly 210 and an ion emission electrode assembly 220. The high-voltage generation circuit assembly 210, disposed in the receiving space 101, provides a negative high-voltage current to the ion emission electrode assembly 220. Exemplarily, the high-voltage generation circuit assembly 210 can boost a low voltage, then double and rectify it to obtain the desired negative DC high voltage. This negative DC high voltage is input to the ion emission electrode assembly 220. The ion emission electrode assembly 220 is used to generate and release electrons into the environment under the influence of the negative high-voltage current.

[0040] In open-circuit operation, under the influence of negative high voltage, a high-voltage corona is generated at the tip of the carbon brush 2221, continuously ionizing the air and forming a large number of positive and negative ion pairs. Positive ions, due to the negative high voltage, move towards the bottom of the carbon brush 222 and eventually neutralize it, while a large number of electrons are rapidly released into the air through the numerous tips of the carbon brush 222. Electrons have extremely short lifetimes (nanoseconds) and cannot exist in the air for long periods. Furthermore, their affinity for oxygen is much greater than that for other gases in the air, such as N2. Since the CO2 content in the air is much lower than that of O2, most of the electrons generated by ionization are captured by oxygen to form negative oxygen ions. These negative oxygen ions are repelled by the negative high-voltage electric field and move away from the tip of the carbon brush 222 (i.e., the top 2221 of the carbon brush), thus creating a negative ion wind. This open structure uses a carbon brush as the negative electrode and the entire space where the cold spray ion generator is located (such as the ground or a tabletop in the environment) as the positive electrode. This creates a high-voltage electrostatic field between the positive and negative electrodes, filling the entire space with the electrostatic field. This greatly enhances the diffusion of negative oxygen ions into the surrounding space, resulting in better diffusion and higher ion concentration, making it suitable for providing better disinfection capabilities for indoor spaces.

[0041] Large resistors, also commonly referred to as high-value resistors or high-resistance resistors, are, in this application embodiment, primarily referring to resistors with resistance values ​​reaching the kiloohm level or higher. Exemplarily, the resistance value of a large resistor can reach the megaohm level or higher, ensuring that the current passing through the large resistor during operation of the cold spray ion generator does not exceed the microamp level, thereby meeting higher product standards, such as medical electrical equipment standards.

[0042] It is understood that the large resistor in the embodiments of this application may refer to a single resistor or a component composed of multiple resistors and other possible components. This application does not limit this, as long as its resistance value can reach at least the kiloohm level.

[0043] A large resistor 301 is disposed in the receiving space 101. One end of the large resistor 301 is electrically connected to the metal strip 102, and the other end is electrically connected to the high-voltage generating circuit assembly 210 to be grounded through the high-voltage generating circuit assembly 210. Exemplarily, the high-voltage generating circuit assembly 210, the ion emission electrode assembly 220, and / or the ion generating component 200 include digital ground, such that the other end of the large resistor 301 can be grounded directly or indirectly, which is not limited in this application.

[0044] The cold-spray ion generator of this application embodiment can operate in two modes: closed and open, depending on whether the user is in contact with the metal strip. The main operating principle of the open mode is as described above and will not be repeated here. See [link to relevant documentation] Figure 5When a user's body comes into contact with the metal strip of the cold spray ion generator, such as when the user holds the cold spray ion generator or a device containing the device, the ion generator operates in a closed mode. Similar to the open mode, under the action of negative high voltage, the tip of the carbon brush rapidly releases electrons into the air, forming negative oxygen ions. Because the user's hand is in contact with the metal strip, the metal strip is connected to ground through a high-resistance circuit component. At this time, the user's body is at a high potential relative to the carbon brush (negative high voltage), forming a closed electrode between the carbon brush and the human body, creating a strong electric field. This causes the negative oxygen ions near the carbon brush to be directed towards the human body, forming a cold spray negative ion wind, which can directionally increase the local concentration of negative oxygen ions on the human body, improving the local disinfection effect. At the same time, because the cold spray negative ion wind is directed towards the human body, it can also increase the human body's ability to absorb negative oxygen ions, thereby enhancing cardiovascular function and improving human function. Due to the presence of high resistance, the field strength between the carbon brush and the human body will not be too high, so in the closed mode, excessive ozone will not be generated, effectively avoiding ozone exceeding the standard.

[0045] In some implementations, the ion emission electrode assembly 220 may include at least one carbon brush 222 and an ion emission circuit board 221.

[0046] These carbon brushes 222 can be disposed inside or outside the receiving space 101, or partially disposed inside or outside the receiving space 101, or they can be configured to be movable, existing outside the receiving space 101 at certain times and inside the receiving space 101 at other times; this application does not limit this. However, the top 2221 of the carbon brush needs to be exposed to the environment during operation so that it can generate negative oxygen ions under the action of high voltage and release them into the air effectively.

[0047] The bottom of the carbon brush 222 is electrically connected to the ion emission circuit board 221. In one possible implementation, the bottom of the carbon brush 222 can be soldered onto the ion emission circuit board 221, forming an integral assembly. This method is simple to operate, easy to install, has high production efficiency, and is easy to control in terms of quality. Exemplarily, the ion emission circuit board 221 can be provided with pads (referred to as the third pad in this embodiment for easy distinction, not shown in the figure), which can be connected to the pads of the carbon brush 222 (referred to as the fourth pad in this embodiment for easy distinction, not shown in the figure). The carbon brushes can be distributed on the ion emission circuit board in any possible manner, such as evenly distributed at equal intervals, etc., which is not limited in this application. It is understood that when the carbon brush and the ion emission circuit board form an integral assembly, the two can be configured together in a movable form.

[0048] The ion emission circuit board 221 can be designed in any possible shape, such as a flat plate, a ring, an irregular shape, etc., and this application does not limit it in this way. For example, in some cases, the ion emission circuit board can be flat, such as... Figure 2 As shown. Also exemplarily, in some cases, the ion emission circuit board can be designed as a ring, with the central portion used to house a cold-spray ion generator or other possible components / assemblies within an apparatus containing a cold-spray ion generator, thereby making the internal structural layout of the apparatus or apparatus more compact and reducing the overall thickness of the apparatus or apparatus.

[0049] In some implementations, the high-voltage generating circuit assembly 210 may include a high-voltage generating circuit board 211. The high-voltage generating circuit board 211 may be equipped with components or circuit structures such as a transformer 2111 and a high-voltage circuit 2113. The output terminal of the high-voltage generating circuit board 211 can be connected to the input terminal of the ion generating circuit board 221. Optionally, the two can be electrically connected by at least one wire 212, which can be, exemplarily, a good conductor of electricity such as iron wire or copper wire. Figures 2 to 4 As shown, one end of the wire 212 is soldered to the pad of the high voltage generating circuit board 211 (referred to as the first pad 2112 in this embodiment for easy distinction from other pads), and the other end is soldered to the pad of the ion emission circuit board 221 (referred to as the second pad 2211 in this embodiment for easy distinction).

[0050] In some implementations, to prevent high-frequency voltage from damaging components on the circuit board, part or all of the components and circuit structures such as transformers and high-voltage circuits on the high-voltage generating circuit board 211 can be enclosed and protected with insulating material. For example, such as... Figure 2 As shown, the high-voltage generating circuit assembly 210 may further include a protective housing 213. The protective housing 213 can take any possible shape, and this application does not limit its shape. The height of the protective housing 213 may be greater than the thickness of the entire high-voltage generating circuit board 211. The portions of the high-voltage generating circuit board 211 including the transformer 2111, high-voltage circuit 2113, etc., are disposed within the protective housing 213. The protective housing 213 is filled with insulating material, which covers and encloses these components and / or circuit structures, thereby protecting the high-voltage generating circuit board 211.

[0051] The insulating material can be, for example, epoxy resin or other similar materials. During potting, the insulating material can be in a fluid state, and after a period of time or with the addition of specific components, it can cure, thereby forming a solid whole from the high-voltage generating circuit board 211, the protective shell 213, and the insulating material. This not only protects the components on the high-voltage generating circuit board 211 but also facilitates subsequent assembly steps.

[0052] Alternatively, when using the aforementioned protective shell solution, see [reference needed]. Figure 2 A wire-passing hole can be made in the side wall of the protective shell 213 to allow the aforementioned wire 212 to pass through the hole and connect the output terminal of the high-voltage generating circuit board 211 to the input terminal of the ion generating circuit board 221. It is understood that when the protective shell is filled with insulating material, a portion of the wire connecting to the high-voltage generating circuit board is also enclosed in the insulating material.

[0053] In some implementations, the aforementioned high-voltage generating circuit board and ion emission circuit board can also be integrated on the same circuit board.

[0054] When a cold spray ion generator or equipment including such a device (e.g., an air sterilizer) is in an open-air operation, localized charges may accumulate on the device or equipment, resulting in two problems. (1) Occasionally, a person may be shocked (discharged static electricity) when they are near the device, for example, when they are about to pick it up; (2) When the device is being charged with a charger via a charging cable, a discharge may also occur when the charging cable interface is near the device.

[0055] Using the cold-spray ion generator in this embodiment, when a user prepares to pick up the device / equipment or prepares to charge it, if the user's finger first touches the metal strip on at least one side of the non-metallic casing, the charge on the device / equipment will be conducted to the human body through the high resistance and the metal strip, and the human body will release the charge through the ground. Because of the presence of the high resistance, the current is very weak and will not produce a strong discharge phenomenon, meaning the human body will not feel an electric shock. For example, to illustrate with a simple example, assuming the carbon brush generates 10,000 volts and the high resistance is 100 megohms, the generated current will be 10,000V / (100×10⁻⁶). 6 Ω=1μA, which already meets the requirements of the medical electrical equipment standard GB 9706.1-2020.

[0056] In some implementations, the surface of the cold-spray ion generator has a handheld area. For example, such as... Figure 8 As shown, the lower half of the non-metallic casing can be designated as the handheld area 810. This is the area that the user frequently touches when holding the device / equipment, i.e., the area with a relatively high contact frequency. The metal strip 102 can be positioned within this handheld area 810, while the carbon brush 222 can be positioned outside the handheld area 810. For example, the carbon brush 222 can be positioned in the upper half of the device. Figure 8As shown. This implementation method can, to some extent, prevent users from coming into contact with the carbon brushes that are under high voltage during operation, while also allowing users to naturally come into contact with the metal strip when handling the device / equipment, thereby releasing the charge.

[0057] When a user picks up the cold spray ion generator / equipment, they may first touch one side of the non-metallic casing or the other side. Optionally, metal strips are provided on at least two opposite sides of the non-metallic casing, or on at least two opposite sides of the handheld area on the surface of the cold spray ion generator. These metal strips can be connected to ground via either a large resistor or the same large resistor. In this way, as soon as the user picks up the device from either side, their fingers will naturally touch any one or more metal strips, silently releasing any locally accumulated charge. Users do not need to remember which specific location to touch first or follow specific operating procedures, making the process more user-friendly and preventing electric shocks.

[0058] In other scenarios, users may accidentally touch areas outside the handle area while the cold-spray ion generator is operating, such as the area with the carbon brushes. In some situations, users may not touch the metal strip in the handle area when handling the device / equipment, but instead touch other parts of the handle area, such as... Figure 1 and Figure 8 The upper cover 104 and lower cover 105 are shown. In these cases, the user may still be electrocuted.

[0059] To address this issue, in one possible implementation, any of the aforementioned cold spray ion generators may further include an object detection sensor 410 and a control module (not shown in the figure).

[0060] The object detection sensor 410 can be exemplarily any possible transmitter-receiver sensor such as infrared or TOF (Time Offlight), and of course, other sensors capable of detecting obstacles or occlusions can also be used. This application does not limit the specific type of sensor.

[0061] See Figure 8 and Figure 9 The detection area 430 of the object detection sensor covers the top 2221 of the carbon brush, and is used to detect whether there are any people, objects, or other obstructions around and above the carbon brush 222. The object detection sensor can be placed in any possible location, as long as its detection area can at least cover the area around the carbon brush.

[0062] The control module is electrically connected to both the object detection sensor and the high-voltage generating circuit assembly 210. Upon receiving a preset signal from the object detection sensor, the control module sends a stop command to the high-voltage generating circuit assembly. This control module can be in various forms, such as a processor, microcontroller, or control circuit, and this application does not limit its specific implementation. For example, the control module may include a high-voltage control circuit, which can be integrated with the aforementioned high-voltage generating circuit board on the same circuit board, such as... Figure 4 As shown.

[0063] For example, in some implementations, see Figure 10 The object detection sensor 410 includes a transmitter 411 and a receiver 412. The object detection sensor 410 is electrically connected to the control module via a ribbon cable 413.

[0064] When the object detection sensor detects an obstruction within its detection area, it generates a preset signal, which is then transmitted to the control module. Upon receiving this preset signal, the control module sends a stop command to the high-voltage generating circuit assembly, thereby controlling the high-voltage generating circuit assembly to pause or stop operating, preventing the negative high voltage at the carbon brush from causing harm to the human body or objects.

[0065] In some scenarios, when a user is about to pick up the device or charge it, they might not reach for it from the area with the metal strip, but from another area. If the device still has a localized charge buildup at this time, the user could still be shocked.

[0066] In some possible implementations, the detection area 430 of the object detection sensor also covers a first sub-region 811 of the handheld area. This first sub-region 811 is a sub-region defined from the handheld area 810, and this sub-region is the area without the metal strip 102. Exemplarily, it could be the area of ​​the upper cover 104 located between the two metal strips 102, such as... Figure 8 As shown.

[0067] In this way, when a user is about to pick up the device or charge it, if their finger enters the detection range of the object detection sensor—for example, by pinching the front of the sensor while picking up the device—the control module will stop the ion generating component from working, causing the negative high voltage on the carbon brush to disappear and thus preventing discharge. This implementation, through the combined use of the metal strip, high resistance, and object detection sensor, not only gives the cold spray ion generator powerful sterilization capabilities but also further reduces the risk of electric shock to the user, improving safety and enhancing the user experience.

[0068] See also some possible implementations. Figure 8 and Figure 9The surface of the cold-spray ion generator is provided with a protruding accommodating cavity 420, and a viewing window 421 can be provided on the side of the accommodating cavity 420 facing the carbon brush 222; the object detection sensor 410 is disposed in the accommodating cavity 420 facing the viewing window 421. In this way, it can be ensured that the detection range of the object detection sensor 410 can cover the surrounding area of ​​the carbon brush, and at the same time, the object detection sensor can be better protected.

[0069] It is understood that the accommodating cavity can be integrally formed with the non-metallic shell, or it can be a component that is independent of the non-metallic shell and can be installed on the non-metallic shell. This application does not limit this.

[0070] Optionally, the accommodating cavity 420 can be located in the handheld area 421, so that the area between the object detection sensor 410 and the carbon brush 222 (part of which belongs to the handheld area 810, and this part of the area can also be regarded as the first sub-area 811 mentioned above) and the carbon brush 222 can both fall within the detection range 430 of the object detection sensor.

[0071] See also some possible implementations. Figure 6 and Figure 7 The large resistor 301 is fixed on the first circuit board 302. The device also includes a first connecting elastic element 303, a second connecting fastener 304, and a third connecting elastic element 305.

[0072] The second fastener 304 is used to indirectly or directly fix the first circuit board 302 in the receiving space 101. The second fastener 304 is also used to electrically connect the first elastic connector 303 and the large resistor 301. The second fastener 304 may, by example, be a screw or the like.

[0073] The first connecting elastic element 303 is used to electrically connect the metal strip 102 and the second connecting fastener 304. The third connecting elastic element 305 is used to electrically connect the large resistor 301 and ground. Exemplarily, the first connecting elastic element 303 and the third connecting elastic element 305 can be springs, respectively.

[0074] For example, such as Figure 7 As shown, when metal strips 102 are provided on both sides of the device's housing, the first connecting elastic member 303 can pass through the side wall 103 of the housing and be perpendicularly connected to the metal strip 102. The second connecting fastener 304 is perpendicular to the first connecting elastic member 303 and fixes the first circuit board 302 to the pressure plate in the accommodating space 101. The space below the first circuit board can be well used to accommodate part of the high-voltage generating circuit assembly and possible components such as batteries.

[0075] To ensure the electrical connection is achieved, the areas where the second fastener 304 contacts the first circuit board 302, and the areas where the third elastic connector 305 contacts the first circuit board 302, can be covered with a conductive material, such as copper.

[0076] This approach allows for a reasonable and compact spatial layout of the various components used to achieve the ion spray function, resulting in stable performance and convenient assembly and maintenance.

[0077] It is understandable that the cold spray ion generator may also include or be equipped with other possible components or structures.

[0078] This application also provides an air disinfection device, including at least one of the cold spray ion generators described in the foregoing embodiments. The air disinfection device can be a portable device, such as a handheld device or a wearable device. In this application, a handheld device mainly refers to a device that can be held by a user and is easily carried between different locations. This device can be held by the user in some situations, and placed or temporarily fixed in others; this application does not limit its use. In this application, a wearable device mainly refers to a portable device that can be worn on the user's body, such as a device that can be hung around the neck via a lanyard, or worn on the wrist or arm.

[0079] The device can use the non-metallic casing of the aforementioned cold-spray ion generator as its housing. This device possesses the beneficial effects achievable by the aforementioned cold-spray ion generator, which will not be elaborated upon here.

[0080] It should be understood that the device may also include other possible components, parts, and parts, such as temperature and humidity sensors, displays, batteries, mechanical or electronic switches / operators, etc.

[0081] It should also be understood that in the description of this application, the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These directions and positional relationships are for ease of description and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0082] It should also be understood that, unless otherwise explicitly specified, the terms "installation," "connection," "assembly," "fixing," etc., in the description of this application should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0083] It should also be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Unless otherwise explicitly specified, "multiple" means two or more.

[0084] The same or similar parts among the various embodiments in this specification can be referred to interchangeably. Different implementations in the above embodiments can be combined with each other as long as they do not contradict each other. The above embodiments do not constitute a limitation on the scope of protection of this invention.

Claims

1. A cold spray ion generating device, characterized by, The cold spray ion generating device comprises a non-metallic shell, an ion generating component and a large resistance, wherein, the non-metallic shell is used for forming an accommodating space, and opposite two side walls of the non-metallic shell are respectively provided with metal strips, at least a part of the metal strips is exposed to the environment and can be contacted by a user; the ion generating component comprises a high-voltage generating circuit assembly and an ion emitting electrode assembly; wherein the high-voltage generating circuit assembly is arranged in the accommodating space and is used for providing negative high voltage for the ion emitting electrode assembly; and the ion emitting electrode assembly is used for generating and releasing electrons to the environment under the action of the negative high voltage; the large resistance is arranged in the accommodating space, is fixed on a first circuit board, one end of the large resistance is electrically connected with the metal strip, the other end of the large resistance is electrically connected with the high-voltage generating circuit assembly and is grounded; wherein the resistance value of the large resistance is in the order of megaohm or higher than the order of megaohm, and the current of the cold spray ion generating device through the large resistance is not more than the order of microampere when the cold spray ion generating device is working; the device further comprises a first connecting elastic member, a second connecting fastener and a third connecting elastic member; wherein, the second connecting fastener fixes the first circuit board in the accommodating space close to one side of an upper cover plate of the non-metallic shell, the second connecting fastener is electrically connected with the large resistance; and the second connecting fastener is perpendicular to and electrically connected with the first connecting elastic member; the first connecting elastic member is perpendicular to and electrically connected with the metal strip on the side wall; the third connecting elastic member is in vertical contact with the first circuit board, and the third connecting elastic member is used for electrically connecting the large resistance and the ground.

2. The device according to claim 1, wherein, the ion emitting electrode assembly comprises at least one carbon brush, and a top of the at least one carbon brush is exposed to the environment when working; a surface of the cold spray ion generating device has a hand-holding area, the metal strip is in the hand-holding area, and the carbon brush is outside the hand-holding area.

3. The apparatus of claim 2, wherein, The device further comprises an object detection sensor and a control module; wherein, a detection area of the object detection sensor covers the top of the carbon brush; the control module is electrically connected with the object detection sensor and the high-voltage generating circuit assembly respectively, and the control module is used for sending a stop instruction to the high-voltage generating circuit assembly when receiving a preset signal from the object detection sensor.

4. The apparatus of claim 3, wherein, The detection area of the object detection sensor also covers a first sub-area of the hand-holding area, and the metal strip is outside the first sub-area.

5. The apparatus of claim 3, wherein, A surface of the cold spray ion generating device is provided with an outwardly convex accommodating cavity, a side of the accommodating cavity facing the carbon brush is provided with a window; and the object detection sensor is arranged in the accommodating cavity and faces the window.

6. The apparatus of claim 1, wherein, The high-voltage generating circuit assembly comprises a high-voltage generating circuit board and a protective shell, a part of the high-voltage generating circuit board provided with a transformer is in the protective shell, and the protective shell is filled with an insulating material.

7. An air disinfection apparatus, characterized by, The air sterilization equipment comprises the cold spray ion generating device according to any one of claims 1-6.

8. The air disinfection apparatus of claim 7, wherein, The air sterilization equipment is a handheld or wearable device.

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