CN116365367A - Cold spray ion generating device and air sterilizing equipment - Google Patents

Abstract

The application discloses a cold spray ion generating device, which comprises a non-metal shell, an ion generating component and a large resistor, wherein at least one side of the non-metal shell is provided with a metal strip, and at least part of the metal strip is exposed to the environment and can be contacted by a user; the high-voltage generation circuit component in the ion generation component is used for providing negative high-voltage electricity for the ion emission electrode component, and the ion emission electrode component is used for generating and releasing electrons into the environment under the action of the negative high-voltage electricity; the large resistor is arranged in the accommodating space, one end of the large resistor is electrically connected with the metal strip, and the other end of the large resistor is electrically connected with the high-voltage generating circuit component so as to be grounded through the high-voltage generating circuit component. The device can realize both open and closed working modes, and forms directional cold spray negative ion wind blown to a user during closed working, thereby improving local negative oxygen ion concentration around the user, improving local disinfection effect and the capability of human body for absorbing negative oxygen ions, and effectively avoiding exceeding ozone.

Description

Cold spray ion generating device and air sterilizing equipment

Technical Field

The application relates to the technical field of air sterilization, in particular to a cold spray ion generating device and air sterilizing equipment.

Background

Along with the rapid increase of the economy in China, the living standard of people is higher and higher, the requirements of people on good living environments are higher and higher, and especially, the pursuit of clean and pollution-free air is higher and higher. In particular, after the outbreak of 2019 new coronavirus (2019-nCoV), it is further recognized that pathogenic microorganisms such as bacteria, viruses, etc. are airborne leading to the severity of infections, especially infections of the respiratory tract. With the recent continuous relaxation of the control measures both abroad and domestically, although the pathogenicity of the virus is greatly reduced, the infectivity and the immune escape capability of the virus are also greatly enhanced, so that the air disinfection device is popular in the market.

The negative ion sterilizing apparatus is one type of air sterilizing apparatus. Most of the existing anion disinfection equipment is large in size, is often large in size and is not suitable for moving, and can only meet the disinfection task of a fixed space where the equipment is located. For this reason, the applicant has previously developed portable negative ion sterilizing devices.

The ion generating device is one of the main components of an anion disinfection apparatus (including a portable anion disinfection apparatus), and a common working mode thereof is open.

Disclosure of Invention

An object of the present application is to provide a cold spray ion generating device, which can realize both an open type and a closed type working mode, and form a directional cold spray negative ion wind between the cold spray ion generating device and a user when the closed type working mode is performed, so as to improve the local negative oxygen ion concentration around the user and the local disinfection effect.

A first aspect of the present application provides a cold spray ion generating device, including a non-metal housing, an ion generating component, and a large resistor, where the non-metal housing is used to form an accommodating space, at least one side of the non-metal housing is provided with a metal strip, and at least part of the metal strip 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 generation circuit assembly is arranged in the accommodating space and is used for providing negative high voltage electricity for the ion emission electrode assembly; the ion emission electrode assembly is used for generating and releasing electrons into the environment under the action of the negative high-voltage electricity; the large resistor is arranged in the accommodating space, one end of the large resistor is electrically connected with the metal strip, and the other end of the large resistor is electrically connected with the high-voltage generating circuit component so as to be grounded through the high-voltage generating circuit component.

In one possible implementation manner of the first aspect, the large resistor is a megaohm resistor, and a current passing through the large resistor in operation of the cold spray ion generating device does not exceed a microampere level.

In one possible implementation of the first aspect, the ion emitting electrode assembly includes at least one carbon brush, a top of the at least one carbon brush being exposed to an environment in operation; the surface of the cold spray ion generating device is provided with a handheld area, the metal strip is positioned in the handheld area, and the carbon brush is positioned outside the handheld area.

In one possible implementation manner of the first aspect, the apparatus further includes an object detection sensor and a control module; wherein a detection area of the object detection sensor covers a top of the carbon brush; the control module is respectively and electrically connected with the object detection sensor and the high-voltage generation circuit component, and is used for sending a stop instruction to the high-voltage generation circuit component under the condition that a preset signal from the object detection sensor is received.

In one possible implementation manner of the first aspect, the detection area of the object detection sensor further covers a first sub-area of the hand-held area, and the metal strip is located outside the first sub-area.

In one possible implementation manner of the first aspect, a surface of the cold spray ion generating device is provided with an outwards convex accommodating cavity, and a window is arranged on one side of the accommodating cavity facing the carbon brush; the object detection sensor is disposed in the accommodation chamber facing the window.

In one possible implementation manner of the first aspect, the large resistor is fixed on the first circuit board, and the device further includes a first connection elastic member, a second connection fastener, and a third connection elastic member; wherein the second connection fastener is used for fixing the first circuit board in the accommodating space and electrically connecting the first elastic connecting piece and the large resistor; the first connecting elastic piece is used for electrically connecting the metal strip and the second connecting fastener; the third connection elastic member is used for electrically connecting the large resistor and the ground.

In one possible implementation manner of the first aspect, the high voltage generating circuit assembly includes a high voltage generating circuit board and a protective shell, a part of the high voltage generating circuit board, where the transformer is disposed, is located in the protective shell, and an insulating material is filled in the protective shell.

A second aspect of the present application provides an air disinfection apparatus which may comprise any of the cold spray ion generating devices of the first aspect.

In one possible implementation manner of the second aspect, the air disinfection device is a handheld device or a wearable device.

Drawings

Fig. 1 is a schematic structural diagram of an exemplary cold spray ion generating device according to an embodiment of the present application.

Fig. 2 is a schematic partial structure of an exemplary cold spray ion generating device provided in an embodiment of the present application.

Fig. 3 is a schematic diagram of a portion of an exemplary high voltage generation circuit assembly provided in an embodiment of the present application.

Fig. 4 is a schematic diagram of a portion of another exemplary high voltage generation circuit assembly provided in an embodiment of the present application.

Fig. 5 is a schematic diagram of an exemplary use scenario of a cold spray ion generating device provided in an embodiment of the present application.

Fig. 6 is a schematic diagram of a portion of a structure of a metal strip and a large resistor associated with an exemplary cold spray ion generating device provided in an embodiment of the present application.

Fig. 7 is a cross-sectional view of a metal strip and large resistance related structure in an exemplary cold spray ion generating device provided in an embodiment of the present application.

Fig. 8 is a schematic diagram of a structure of an exemplary cold spray ion generating device according to an embodiment of the present application at one view angle.

Fig. 9 is a schematic structural view of another view of an exemplary cold spray ion generating device provided in an embodiment of the present application.

Fig. 10 is a schematic structural diagram of an object detection sensor in an exemplary cold spray ion generating device according to an embodiment of the present application.

Reference numerals illustrate:

a nonmetallic housing 100; a housing space 101; a metal strip 102; a sidewall 103; an upper cover plate 104; a lower cover plate 105;

an ion generating member 200; a high voltage generation circuit assembly 210; a high voltage generating circuit board 211; a transformer 2111; a first pad 2112; a high-voltage circuit 2113; a wire 212; a protective shell 213; an ion-emitting electrode assembly 220; an ion emission circuit board 221; a second pad 2211; a carbon brush 222; a top 2221 of the carbon brush;

a large resistance 301; a first circuit board 302; a first connection elastic member 303; a second connecting fastener 304; a third connecting elastic member 305;

an object detection sensor 410; a transmitting end 411; a receiving end 412; a flat cable 413; a receiving chamber 420; window 421; detection zone 430

A cold spray ion generating device 800; a hand-held region 810; a first sub-region 811; a human body 900; a hand 901.

Detailed Description

For a clear and complete description of the technical solutions of the present application, reference will be made to the following further description in conjunction with the examples and the accompanying drawings.

The embodiment of the application provides a cold spray ion generating device, which can realize an open working mode and a closed working mode. Under the condition of closed type work, the cold spray ion generating device can generate cold spray ion wind which is directly and directionally blown to a user, so that the concentration of local negative oxygen ions around the user is improved, the local disinfection effect and the capability of the user for absorbing the negative oxygen ions are improved, and ozone is not easy to exceed standard.

Referring to fig. 1, 2 and 8, embodiments of the present application provide a cold spray ion generating device comprising a non-metallic housing 100, an ion generating component 200 and a large resistor 301.

The nonmetallic housing 100 is used as a supporting structure of the cold spray ion generating device, and is mainly used for forming a containing space 101, wherein the containing space 101 can be used for arranging/installing possible parts, such as ion generating parts, large resistors, sensors and the like. The shape of the housing may be any possible shape such as a cylinder, a rectangular parallelepiped, etc., and the accommodating space may be different according to the shape of the housing, which is not limited in this application. Illustratively, as shown in fig. 1 and 8, the housing has a cube-like shape including a lower cover plate 105 and side walls 103, thereby enclosing a semi-enclosed receiving space 101. Of course, the housing may also include the upper cover plate 104, etc., as necessary.

The material of the housing is a non-metallic material such as plastic, ceramic, rubber, glass, etc. It will be appreciated that when the housing includes a plurality of different components, the components may be of the same or different materials, for example, the side walls may be of a plastic or ceramic material, and the upper and lower cover plates may be of a plastic or glass material, as this application is not limited in this regard. It will also be appreciated that in some cases, the housing may also contain localized metallic material parts or regions, which are not limited in this application, so long as the normal operation of the cold spray ion generating device in the embodiments of the present application is not affected, and the generation of cold spray ion wind is not affected.

At least one side of the non-metallic housing 100 is provided with a metal strip 102, at least part of the metal strip 102 being exposed to the environment, which can be contacted by a user. The specific shape of the metal strip is not limited in this application, and may be, for example, elliptical, square, waist-shaped, irregular, etc., and it is not required that it be strip-shaped, as long as it can provide a certain contact surface for a user to contact. Illustratively, as shown in fig. 1 and 8, two side walls 103 of the nonmetallic housing 100 are respectively provided with a metal strip 102, two side walls of the housing are respectively provided with a waist-shaped hole, the metal strip 102 is fittingly embedded in the waist-shaped hole, and the outer surface is exposed to the environment and is flush with the outer surface of the nonmetallic housing. The strips are accessible to the user when holding the cold spray ion generating device. Also, for example, the metal strip may be provided on the lower cover plate of the housing or other location for convenient access by the user.

The ion generating unit 200 is mainly used for generating and releasing electrons, and the ion generating unit in this embodiment may use an existing ion generator, or may use other possible structures.

In some possible implementations, the ionizer component 200 includes a high voltage generating circuit assembly 210 and an ion emitting electrode assembly 220. The high voltage generation circuit assembly 210 is disposed in the accommodating space 101 for providing negative high voltage electricity to the ion emitting electrode assembly 220. Illustratively, the high voltage generation circuit assembly 210 may boost the low voltage and then rectify the voltage to obtain the desired DC negative high voltage. The dc negative high voltage is input to the ion emitting electrode assembly 220. The ion emitting electrode assembly 220 is used to generate and release electrons into the environment under the action of negative high voltage electricity.

In the open mode of operation, the tips at the top 2221 of the carbon brush generate a high voltage corona under the action of the negative high voltage, and the air is continuously ionized, so that a large number of positive and negative ion pairs are formed, the positive ions move to the bottom of the carbon brush 222 and are finally neutralized by the negative high voltage, and a large number of electrons are rapidly released into the air through the tips of the carbon brush 222. The electron lifetime is extremely short (nanosecond level), can not exist in the air for a long time, and the affinity to oxygen is far greater than N ₂ Affinity to other gases in the air, and CO in the air ₂ The content is far lower than O ₂ So that most of electrons generated by ionization are captured by oxygen to form negative oxygen ions. The negative oxygen ions are repelled from the tips of the carbon brushes 222 (i.e., the tips 2221 of the carbon brushes) by the negative high voltage electric field, thereby forming negative ion wind. The open structure takes the carbon brush as a negative electrode and takes the whole space (such as the earth in the environment, a table top and the like) where the cold spray ion generating device is positioned as a positive electrode, so that a high-voltage electrostatic field is formed between the positive electrode and the negative electrode, the whole space is filled with the electrostatic field, the effect of diffusing negative oxygen ions into the surrounding space is greatly improved, the diffusion effect is better, the ion concentration is higher, and the open structure is suitable for providing better sterilizing capacity for indoor space.

Large resistance, also commonly referred to as large resistance, high resistance, and the like. The large resistor 301 in the embodiment of the present application mainly refers to a resistor with a resistance value reaching a kiloohm level or higher. The resistance of the large resistor may be illustratively on the order of megaohms or higher so that the cold spray ion generating device is operable to pass no more than a microampere of current through the large resistor, thereby enabling compliance with higher-demand product standards, such as medical electrical equipment standards.

It should be understood that the large resistor in the embodiment of the present application may refer to a single resistor, or may be an assembly formed by a plurality of resistors and other possible components, so long as the resistance value of the resistor can reach at least a kiloohm level or higher.

The large resistor 301 is disposed in the accommodating space 101, and one end of the large resistor 301 is electrically connected to the metal bar 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. Illustratively, the high voltage generation circuit assembly 210, the ion emitting electrode assembly 220, and/or the ion generating component 200 include a digital ground such that the other end of the large resistor 301 may be directly or indirectly grounded, which is not limited in this application.

The cold spray ion generating device can respectively realize two working modes of closed type and open type under the condition that a user contacts with the metal strip and does not contact with the metal strip. The main working principle of the opening type is as described above and will not be described here again. Referring to fig. 5, the ion generating device is in a closed mode of operation when a body part of a user is in contact with a metal strip of the cold spray ion generating device, for example when the user holds the cold spray ion generating device or a device incorporating the device. Similar to the open working mode, electrons are rapidly released into the air by the tip of the carbon brush under the action of negative high pressure, and negative oxygen ions are formed. Because the hands of the user are contacted with the metal strip, the metal strip is connected with the ground through the large-resistance and high-voltage generation circuit component, at the moment, the body of the user is in high potential relative to the carbon brush (negative high voltage), a closed electrode is formed between the carbon brush and the human body, and a stronger electric field is formed, so that negative oxygen ions near the carbon brush are blown to the human body in a directional manner, cold spray negative ion wind is formed, the local negative oxygen ion concentration of the human body can be directionally improved, and the local disinfection effect is improved. Meanwhile, because the cold spray negative ion wind is blown to the human body in a directional way, the capability of the human body for taking in negative oxygen ions can be improved, thereby enhancing cardiovascular and cerebrovascular functions and the like and improving the functions of the human body. Because of the existence of large resistance, the field intensity between the carbon brush and the human body is not too high, so that too much ozone can not be generated in a closed working mode, and the exceeding of ozone can be effectively avoided.

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

These carbon brushes 222 may be provided in the accommodation space 101 or outside the accommodation space 101, may be provided partially in the accommodation space 101, partially outside the accommodation space 101, or may be provided in a movable form, and may be provided outside the accommodation space 101 at some times and inside the accommodation space 101 at other times, which is not limited in this application. However, the top 2221 of the carbon brush needs to be exposed to the environment during operation so that it can form negative oxygen ions and be well released into the air under the action of high voltage electricity.

The bottom of the carbon brush 222 is electrically connected to the ion emitting circuit board 221. In one possible implementation, the bottom of the carbon brush 222 may be soldered to the ion emitting circuit board 221, forming an integral assembly. The method is simple to operate, convenient to install, high in production efficiency and easy to control quality. Illustratively, the ion emitting circuit board 221 may be provided with a pad (for convenience of distinction, referred to as a third pad in the embodiment of the present application, not shown in the drawings) that may be in communication with a pad (for convenience of distinction, referred to as a fourth pad in the embodiment of the present application, not shown in the drawings) of the carbon brush 222. The carbon brushes may be distributed on the ion emitting circuit board in any possible manner, such as equally spaced, uniform distribution, etc., which is not limited in this application. It will be appreciated that where the carbon brush and the ion emitting circuit board form a unitary assembly, the two may be provided together in a removable form.

The ion emitting circuit board 221 may be designed in any possible shape, such as a flat plate shape, a ring shape, an irregular shape, etc., which is not limited in this application. Illustratively, in some cases, the ion-emitting circuit board may be flat-plate-like, as shown in fig. 2. Also by way of example, in some cases, the ion emitting circuit board may be designed in a ring shape, the middle of which may be used to locate a cold spray ion generating device or other possible components/assemblies in an apparatus incorporating a cold spray ion generating device, thereby making the structural layout of the interior of the device or apparatus more compact and reducing the overall thickness of the device or apparatus.

In some implementations, the high voltage generation circuit assembly 210 may include a high voltage generation circuit board 211. The high voltage generation circuit board 211 may be provided with components or circuit structures such as a transformer 2111 and a high voltage circuit 2113. An output terminal of the high voltage generation circuit board 211 and an input terminal of the ion generation circuit board 221 may be connected. Alternatively, the electrical connection may be achieved by at least one wire 212, and the wire 212 may be illustratively a good electrical conductor such as an iron wire, a copper wire, or the like. As shown in fig. 2 to 4, one end of the wire 212 is soldered to a pad (referred to as a first pad 2112 in the embodiment of the present application for convenience of distinction from other pads) of the high voltage generation circuit board 211, and the other end is soldered to a pad (referred to as a second pad 2211 in the embodiment of the present application for convenience of distinction) of the ion emission circuit board 221.

In some implementations, in order to avoid the high-frequency voltage damaging the components on the circuit board, the high-voltage generating circuit board 211 may be provided with a part or all of the components and circuit structures such as a transformer, a high-voltage circuit, and the like, and may be sealed and protected by an insulating material. Illustratively, as shown in FIG. 2, the high voltage generation circuit assembly 210 may also include a protective housing 213. The protective shell 213 may take any possible shape, which is not limited in this application. The height of the protective case 213 may be higher than the thickness of the entire high voltage generation circuit board 211. The portion of the high voltage generation circuit board 211 including the transformer 2111, the high voltage circuit 2113, and the like is provided in the protective case 213, and the protective case 213 is filled with an insulating material so that the insulating material can cover these components and/or circuit structures, closing them, thereby protecting the high voltage generation circuit board 211.

The insulating material may be, for example, an epoxy glue or the like. The insulating material may be fluid-like during pouring, and may be cured after waiting for a certain period of time or after adding a specific component, so that part of the high voltage generating circuit board 211, the protective case 213 and the insulating material form a solid whole. This not only protects the components on the high voltage generation circuit board 211, but also facilitates the subsequent assembly steps.

Alternatively, when the solution of the protective case is adopted, referring to fig. 2, a wire hole may be formed on a sidewall of the protective case 213, so as to enable the wire 212 to pass through the wire hole and connect an output end of the high voltage generation circuit board 211 with an input end of the ion generation circuit board 221. It will be appreciated that when the protective shell is filled with an insulating material, a portion of the wire that is connected to the high voltage generating circuit board is also enclosed in the insulating material.

In some implementations, the aforementioned high voltage generation circuit board and ion emission circuit board may also be integrated on the same circuit board.

Cold spray ion generating devices or equipment incorporating such devices (e.g., air disinfection equipment) may locally accumulate electrical charge when in open operation, creating two problems. (1) When a human body approaches the device/apparatus, for example, when the device/apparatus is ready to be lifted, an electric person situation (electrostatic discharge to the human body) occasionally occurs; (2) When charging the device/apparatus with a charger through a charging cord, a discharge situation may also occur when the charging cord interface is in proximity to the device/apparatus.

By adopting the cold spray ion generating device in the embodiment of the application, when a user is ready to pick up the device/equipment or is ready to charge, if the finger of the user firstly contacts the metal strip arranged on at least one side of the non-metal shell, the charge on the device/equipment can be conducted to a human body through a large resistor and the metal strip, and the human body releases the charge through the ground. Because of the existence of the large resistor, the current is very weak, and the strong discharge phenomenon can not be generated, namely, the human body can not feel electrified. For example, in oneFor a simple example, assuming a carbon brush generating 10000 volts, a large resistance of 100 megaohms would produce a current of 10000V/(100×10) ⁶ ) Ω=1 μa, which is already capable of meeting the requirements of the medical electrical equipment standard GB 9706.1-2020.

In some implementations, the cold spray ion generating device surface has a hand-held region. Illustratively, as shown in FIG. 8, the lower half of the non-metallic housing may be divided into a hand-held region 810, which is the region that a user would typically contact when holding the device/apparatus in his or her hand, i.e., a region that is relatively high in contact frequency. The metal strip 102 may be disposed in the hand-held region 810 and the carbon brush 222 may be disposed outside the hand-held region 810, for example, the carbon brush 222 may be disposed in the upper half of the device, as shown in fig. 8. By adopting the implementation mode, the user can be prevented from contacting the carbon brush with high pressure during working to a certain extent, and the user can conveniently and naturally contact the metal strip when taking the device/equipment, so that the electric charge is released.

For a user to take a cold spray ion generating device/apparatus, it is possible to contact one side of the non-metallic housing first, or the other side first. Optionally, metal strips are provided on at least opposite sides of the nonmetallic housing, or at least opposite sides in the hand-held region of the cold spray ion generating device surface, respectively. The metal strips on the two sides can pass through a large resistor respectively, and can also pass through the same large resistor so as to be grounded. In this way, as long as the user picks up the device from both sides, the finger will naturally touch any one or more metal strips, and the locally accumulated charges are silently released, without the user having to explicitly remember which specific location needs to be touched first or to perform according to specific operation steps, and the device is more friendly to the user while avoiding the user from being electrified.

In other situations, the user may also inadvertently touch areas other than the hand-held area, such as areas provided with carbon brushes, while the cold spray ion generating device is in operation. In some scenarios, the user may not contact the metal strip in the hand-held area while taking the device/apparatus, but rather contact other locations of the hand-held area, such as the upper cover plate 104 and the lower cover plate 105 as shown in fig. 1 and 8. In these cases, the user may still be powered.

To address this issue, in one possible implementation, any of the foregoing cold spray ion generating devices may further include an object detection sensor 410 and a control module (not shown).

The object detection sensor 410 may be any possible transmitting-receiving sensor such as infrared sensor, TOF (Timeofflight) sensor, etc., and of course, other sensors capable of detecting obstacles and obstructions may be used, and the specific type of sensor is not limited in this application.

Referring to fig. 8 and 9, the detection area 430 of the object detection sensor covers the top 2221 of the carbon brush for detecting whether there is a human body, an object, or the like shielding around, and also above, the carbon brush 222. The object detection sensor may be disposed at any possible position as long as its detection area can be covered at least around the carbon brush.

The control module is electrically connected to the object detection sensor and the high voltage generation circuit assembly 210, respectively, and is configured to send a stop instruction to the high voltage generation circuit assembly when receiving a preset signal from the object detection sensor. The control module may be a possible form of a processor, a single chip microcomputer, a control circuit, etc., which is not limited in this application. Illustratively, the control module may include a high voltage control circuit that may be integrated on the same circuit board as the aforementioned high voltage generation circuit board, as shown in fig. 4.

Illustratively, in some implementations, referring to fig. 10, the object detection sensor 410 includes a transmitting end 411 and a receiving end 412. The object detection sensor 410 is electrically connected to the control module via a flat cable 413.

When the object detection sensor detects a shielding object in the detection area, the object detection sensor can generate a preset signal and transmit the preset signal to the control module. The control module sends a stop instruction to the high-voltage generation circuit assembly after receiving the preset signal, so that the high-voltage generation circuit assembly is controlled to stop or stop working, and the damage of negative high pressure at the carbon brush to human bodies or objects and the like is avoided.

In some scenarios, when a user is ready to pick up a device or to charge, he may not pick up from the area where the metal strip is provided, but from other areas. If the device is still locally charged at this point, the user may still be powered.

In some possible implementations, the detection area 430 of the object detection sensor also covers the first sub-area 811 of the handheld area. The first sub-area 811 here is a sub-area divided from the hand-held area 810, which is an area where the metal strips 102 are not provided, and may be, for example, an area of the upper cover plate 104 between the metal strips 102 on both sides, as shown in fig. 8.

In this way, when the user is ready to pick up the device or is ready to charge, if the user's finger enters the detection range of the object detection sensor, for example, by pinching the device at a position in front of the object detection sensor, the control module controls the ion generating component to stop working, so that the negative high pressure on the carbon brush is eliminated, and the discharge phenomenon is avoided. In this implementation mode, through the further cooperation use of metal strip, big resistance and object detection sensor, when making cold spray ion generating device possess powerful disinfection ability of disinfecting, also can further reduce the emergence of the condition that the user was electrified, promote safety in utilization, promote user's use experience.

In some possible implementations, referring to fig. 8 and 9, the surface of the cold spray ion generating device is provided with a convex accommodating cavity 420, and a side of the accommodating cavity 420 facing the carbon brush 222 may be provided with a window 421; the object detection sensor 410 is disposed in the accommodation chamber 420 facing the window 421. In this way, the detection range of the object detection sensor 410 can be ensured to cover the periphery of the carbon brush, and the object detection sensor can be well protected.

It is understood that the accommodating cavity may be integrally formed with the non-metal housing, or may be a component independent of the non-metal housing and capable of being mounted on the non-metal housing, which is not limited in this application.

Alternatively, the accommodation chamber 420 may be located in the holding area 421, so that the area between the object detection sensor 410 and the carbon brush 222 (a part of the area belongs to the holding area 810, which may be regarded as the first sub-area 811 as described above) and the carbon brush 222 can fall within the detection range 430 of the object detection sensor.

In some possible implementations, referring to fig. 6 and 7, the large resistor 301 is fixed on the first circuit board 302, and the apparatus further includes a first connection elastic member 303, a second connection fastener 304, and a third connection elastic member 305.

The second connection fastener 304 is used to fix the first circuit board 302 in the accommodating space 101 indirectly or directly. The second connection fastener 304 is also used to electrically connect the first elastic connection 303 and the large resistor 301. The second connecting fastener 304 may illustratively be a screw or the like.

The first connection elastic member 303 is used to electrically connect the metal strip 102 and the second connection fastener 304. The third connection elastic member 305 is for electrically connecting the large resistor 301 and the ground. Illustratively, the first and third connection elastic members 303 and 305 may be springs, respectively.

For example, as shown in fig. 7, when the metal, 102 is provided at both sides of the housing of the device, the first connection elastic member 303 may penetrate the sidewall 103 of the housing, be vertically connected to the metal strip 102, and the second connection fastener 304 is vertically connected to the first connection elastic member 303 and fixes the first circuit board 302 to the pressing plate in the receiving space 101. The space under the first circuit board may be well adapted to accommodate the partial structure of the high voltage generating circuit assembly and possibly other components such as a battery.

To ensure that an electrical connection is achieved, the area where the second connection fastener 304 contacts the first circuit board 302 and the area where the third resilient connector 305 contacts the first circuit board 302 may be covered with a benign conductive material, such as copper or the like.

By adopting the mode, each part for realizing the ion cold spraying function has reasonable and compact space layout, stable performance and convenient assembly and maintenance.

It is understood that the cold spray ion generating device may also include or be provided with other possible components or structures.

Embodiments of the present application also provide an air disinfection apparatus comprising at least one cold spray ion generating device of any of the foregoing embodiments. The air disinfection device may be a portable device, such as a handheld device or a wearable device. The handheld device in the embodiments of the present application mainly refers to a device that can be held by a user's hand and is easy to carry between sites of use. The device may be held in the hand of a user in some cases, placed, temporarily secured, etc. in other cases, without limitation. The wearable device in the embodiment of the application mainly refers to a portable device that can be worn on a body by a user, for example, can be hung on the neck through a hanging rope, can be worn on a wrist, an arm, and the like.

The device can take the nonmetallic shell of the cold spray ion generating device as the shell of the device. The device has the beneficial effects that the cold spray ion generating device can realize, and the description is omitted here.

It will be appreciated that the device may also include other possible assemblies, parts, components, etc., such as temperature and humidity sensors, display screens, batteries, mechanical or electronic switches/operators, etc.

It should also be understood that in the description of the present application, the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicate an orientation or positional relationship generally based on that shown in the drawings. These directions and positional relationships are for convenience of description, and are not indicative or implied that the devices or elements referred to must have a particular orientation, be constructed and operate in a particular orientation, and are therefore not to be construed as limitations of the present application.

It should also be understood that in the description of the present application, unless specifically limited otherwise, the terms "mounted," "connected," "assembled," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; may be a mechanical or electrical connection; may be directly connected or indirectly connected through an intermediary. It will be understood by those of ordinary skill in the art that the specific meaning of the terms described above in this application will be understood by those of ordinary skill in the art as the case may be.

It should also be appreciated that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. Unless specifically limited otherwise, the meaning of "a plurality" is two or more.

The same or similar parts between the various embodiments in this specification are referred to each other. The different implementations of the above embodiments may be combined with each other as long as they are not contradictory. The above embodiments do not limit the scope of the present invention.

Claims (10)

1. A cold spray ion generating device is characterized by comprising a nonmetallic shell, an ion generating component and a large resistor, wherein,

the nonmetal shell is used for forming an accommodating space, at least one side of the nonmetal shell is provided with a metal strip, and at least part of the metal strip 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 generation circuit assembly is arranged in the accommodating space and is used for providing negative high voltage electricity for the ion emission electrode assembly; the ion emission electrode assembly is used for generating and releasing electrons into the environment under the action of the negative high-voltage electricity;

the large resistor is arranged in the accommodating space, one end of the large resistor is electrically connected with the metal strip, and the other end of the large resistor is electrically connected with the high-voltage generating circuit component so as to be grounded through the high-voltage generating circuit component.

2. The apparatus of claim 1 wherein the large electrical resistance is a megaohm-type resistance and the cold spray ion generating device is operative to pass a current through the large electrical resistance no more than a microampere level.

3. The device according to any one of claims 1-2, wherein,

the ion emitting electrode assembly includes at least one carbon brush, a top of the at least one carbon brush being exposed to an environment during operation;

the surface of the cold spray ion generating device is provided with a handheld area, the metal strip is positioned in the handheld area, and the carbon brush is positioned outside the handheld area.

4. The apparatus of claim 3, further comprising 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 respectively and electrically connected with the object detection sensor and the high-voltage generation circuit component, and is used for sending a stop instruction to the high-voltage generation circuit component under the condition that a preset signal from the object detection sensor is received.

5. The device of claim 4, wherein the detection area of the object detection sensor further covers a first sub-area of the hand-held area, the metal strip being outside the first sub-area.

6. The device according to claim 4, wherein the surface of the cold spray ion generating device is provided with an outwards convex accommodating cavity, and a window is arranged on one side of the accommodating cavity facing the carbon brush; the object detection sensor is disposed in the accommodation chamber facing the window.

7. The device of any of claims 1-6, wherein the large resistor is secured to a first circuit board, the device further comprising a first connecting spring, a second connecting fastener, a third connecting spring; wherein,,

the second connecting fastener is used for fixing the first circuit board in the accommodating space and electrically connecting the first elastic connecting piece and the large resistor;

the first connecting elastic piece is used for electrically connecting the metal strip and the second connecting fastener;

the third connection elastic member is used for electrically connecting the large resistor and the ground.

8. The device of any one of claims 1-7, wherein the high voltage generation circuit assembly comprises a high voltage generation circuit board and a protective shell, wherein a part of the high voltage generation circuit board provided with a transformer is positioned in the protective shell, and the protective shell is filled with an insulating material.

9. An air disinfection apparatus comprising a cold spray ion generating device as claimed in any one of claims 1 to 8.

10. An air disinfection apparatus as claimed in claim 9, wherein said air disinfection apparatus is a hand-held or wearable apparatus.

Images