Static charge reduction device

Abstract

The present invention relates to an electrostatic charge reduction device, comprising a wet medium generator for generating a wet medium having a specified relative humidity, a wet medium conveying device for conveying the wet medium to a target object, a grounding device connecting the wet medium conveying device to ground, and a conductive member that contacts the target object and is connected to the grounding device. The wet medium conveying device, the conductive member, and the target object are sequentially arranged along a wet medium conveying path, so that the wet medium is conveyed sequentially through the wet medium conveying device, the conductive member, and the target object to reduce electrostatic charge. This discovery is surprising because an air ionizer is not used in this process to neutralize and reduce electrostatic charge.

Description

Technical Field

[0001] The present invention relates to the technical field of electrostatic charge reduction, and more particularly to an electrostatic charge reduction device. Background Art

[0002] It is a well-known fact in the electrostatic discharge (ESD) control industry that the use of air ionization technology to reduce electrostatic charge still has obvious limitations and shortcomings. These limitations and shortcomings are particularly significant in today's high-speed and fast-output manufacturing environments, such as in moving webs, insulating films or web-based processes.

[0003] Most air ionization devices currently on the market are not fast enough to neutralize the static charge lurking on the polymer-based mobile insulator web.

[0004] D1 (CN 209627781U) discloses an apparatus for removing static charges from finished fabrics. However, in D1, the industrial humidifier 7 is located at the bottom of the apparatus, and the generated moisture first contacts the fabric. To minimize the impact on fabric quality, the humidity of the moisture must be carefully controlled. Furthermore, this technical solution is not suitable for moisture-sensitive products.

[0005] D2 (CN 104918397A) discloses an ionizer consisting of an ionizer head 200 and a moisture generating element 300 connected via a curved hose 101. The ionizer head 200 is equipped with a power supply 215, a plurality of ionizer pins 220, and two ground electrodes 230. The power supply 215 in the housing 210 applies a high voltage between the ionizer pins 220 and the ground electrode 230, thereby generating corona discharge between the pins 220 and the ground electrode 230. However, the installation and maintenance of the power supply 215 are very expensive.

[0006] Therefore, there still exists an industry need to address the limitations, deficiencies, and drawbacks of current electrostatic charge reduction solutions. Further research and development efforts are needed to explore better alternatives or solutions that eliminate the aforementioned limitations, deficiencies, and drawbacks. Summary of the Invention

[0007] According to one aspect, an electrostatic charge reduction device is provided, comprising a wet medium generator for generating a wet medium having a specified relative humidity, a wet medium conveying device for conveying the wet medium to a target object, a grounding device connecting the wet medium conveying device and the ground, and a conductive device that contacts the target object and is connected to the grounding device; the wet medium conveying device, the conductive device, and the target object are arranged in sequence along a conveying path of the wet medium, so that the wet medium is conveyed through the wet medium conveying device, the conductive device, and the target object in sequence to reduce electrostatic charge.

[0008] Preferably, the wet medium generator includes a wet gas generator for generating wet gas with a specified relative humidity, the wet medium conveying device includes a wet gas conveying device having an opening, the opening facing the target object for guiding the wet gas to the target object, and the conductive device includes a mounting structure arranged in the opening and a conductive element arranged on the mounting structure, wherein the conductive element contacts the target object and is connected to the grounding device.

[0009] Preferably, the wet gas delivery device comprises a gas nozzle having a flat opening, wherein an outer edge of the flat opening forms the opening facing the target object.

[0010] Preferably, the mounting structure comprises a strip disposed across the opening, the conductive element being a metal wire attached to the strip and bent to form a plurality of small loops for contact with the target object.

[0011] Preferably, two mounting grooves are formed at opposite inner sides of the opening, and the belt-like member is inserted into the mounting grooves to be attached to the opening.

[0012] Preferably, the mounting structure comprises a roller disposed across the opening, and the conductive element is a metal wire wound around the roller and in contact with the target object.

[0013] Preferably, the mounting structure further includes two mounting grooves formed at opposite inner sides of the opening, and the mounting shaft of the roller is inserted into the mounting grooves to be attached to the opening.

[0014] Preferably, the mounting structure comprises a strip disposed across the opening, and the conductive element is a soft metal sheet attached to the strip and in contact with the target object.

[0015] Preferably, the wet gas delivery device further comprises a delivery pipe for connecting the wet gas generator and the flat port.

[0016] Preferably, the wet medium generator includes a container filled with water, and the wet medium conveying device includes a water conveying structure and a water conveying medium; one end of the water conveying medium is wound around the water conveying structure, and the other end contacts the conductive device; the lower part of the water conveying structure is immersed in the water, and the upper part of the water conveying structure is arranged above the water, so that the water in the container is conveyed in sequence through the water conveying medium, the conductive device and the target object, thereby reducing electrostatic charge through capillary action.

[0017] Preferably, the water transmission structure is a cylindrical drum, the lower part of the cylindrical drum is immersed in the water, and the water transmission medium includes a first water transmission medium part that is wound upward from the lower part of the cylindrical drum to the upper part of the cylindrical drum, a second water transmission medium part that winds the first water transmission medium part around the upper part of the cylindrical drum, and a third water transmission medium part that connects the second water transmission medium part and the conductive device.

[0018] Preferably, the conductive device includes a horizontal mounting structure and a conductive element provided at a lower edge of the horizontal mounting structure, and the third water transmission medium is partially attached to the horizontal mounting structure so that the water can be transported to the conductive element.

[0019] Preferably, the conductive element is a metal wire bent into a plurality of small loops for contact with the target object, the wire being combined with a tiny protective spiral metal coil.

[0020] Preferably, the water transfer structure further comprises a retractable mechanism for retracting the water transfer medium.

[0021] Preferably, the conductive device includes two horizontal mounting structures, which are arranged horizontally or inclined so that the conductive elements arranged at the lower edges of the two horizontal mounting structures contact the target object passing horizontally or vertically, and the water transmission medium has a double-layer structure.

[0022] Preferably, the electrostatic charge reducing device further comprises a moisture generator for generating moisture having a specified relative humidity and a wet medium conveying device for blowing the moisture into the conductive member.

[0023] When wet media with a specified relative humidity from a wet media generator is conveyed through the wet media conveying device, then past the conductive member, and finally directed to the junction between a target object and the conductive member connected to a grounding device, surprisingly, the original static voltage drops by more than 90% after the target object passes through and separates from the conductive member. This finding is surprising because no air ionizer is used to neutralize and reduce static charge during this process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to further explain the present application, exemplary embodiments of the present application will be described with reference to the following drawings, in which:

[0025] Figure 1 is a schematic diagram showing an electrostatic charge reducing device according to a first embodiment of the present application;

[0026] Figure 2 is an exploded view showing a moisture transport device according to a preferred embodiment of the present application;

[0027] Figure 3 is an exploded view showing a moisture transport device according to another preferred embodiment of the present application;

[0028] Figure 4 is a schematic diagram showing an electrostatic charge reducing device according to a second embodiment of the present application;

[0029] Figure 5 is a schematic diagram showing an electrostatic charge reducing device according to a third embodiment of the present application;

[0030] Figure 6 is a schematic diagram showing an electrostatic charge reducing device according to a fourth embodiment of the present application;

[0031] Figure 7 is a schematic diagram showing an electrostatic charge reducing device according to a fifth embodiment of the present application;

[0032] Figure 8 is a schematic diagram showing an electrostatic charge reducing device according to a sixth embodiment of the present application;

[0033] Figure 9 is a schematic diagram showing a conductive element according to a preferred embodiment of the present application. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the various specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0035] The present application relates to an electrostatic charge reduction device, comprising a wet medium generator for generating a wet medium having a specified relative humidity, a wet medium delivery device for delivering the wet medium to a target object, a grounding device connecting the wet medium delivery device to ground, and a conductive member that contacts the target object and is connected to the grounding device. The wet medium delivery device, the conductive member, and the target object are sequentially arranged along a wet medium delivery path, such that the wet medium is sequentially delivered through the wet medium delivery device, the conductive member, and the target object to reduce electrostatic charge. When the wet medium having a specified relative humidity from the wet medium generator passes through the wet medium delivery device, then through the conductive member, and finally to the junction between the target object and the conductive member connected to the grounding device, surprisingly, after the target object passes through and separates from the conductive member, the original static voltage drops by more than 90%. This finding is surprising because no air ionizer is used to neutralize and reduce electrostatic charge during this process.

[0036] Figure 1 1 is a schematic diagram illustrating an electrostatic charge reducing device according to a first embodiment of the present application. In this application, the electrostatic charge reducing device includes a wet medium generator for generating a wet medium having a specified relative humidity, a wet medium delivery device for delivering the wet medium to a target object, a grounding device connecting the wet medium delivery device to ground, and a conductive member that contacts the target object and is connected to the grounding device.

[0037] exist Figure 1 In the embodiment described, the wet medium is wet gas. Therefore, the wet medium generator is a wet gas generator 100 for generating wet gas having a specified relative humidity, and the wet medium delivery device is a wet gas delivery device 200 for delivering the wet gas to a target object 400. A grounding device 300 connects the wet gas delivery device 200 to ground G. The wet gas delivery device 200 has an opening 221 facing the target object 400. A conductive member 230 is provided in the opening 221. The conductive member 230 both contacts the target object 400 and is connected to the grounding device 300.

[0038] In a preferred embodiment of the present application, the moisture generator 100 can be any controlled moisture supply device that continuously outputs moisture, or any controlled moisture supply device that alternately outputs a single or multiple moisture channels. The specified relative humidity of the channel or multiple moisture channels is 60% to 95%, preferably 75% to 90%, and more preferably 85% to 90%. In a more preferred embodiment, the specified relative humidity can be set to 75%, 85%, or 95%. In a preferred embodiment of the present application, the moisture transport device 200 can have any shape, as long as it can be used to transport moisture from the moisture generator 100 to the target object 400, and the moisture transport device 200 has an opening 221 facing the target object 400 for directing the moisture to the target object 400. For example, it can be a pipe with or without a nozzle, or a nozzle with or without a connected pipe.

[0039] In such Figure 1 In the preferred embodiment of the present application, the wet gas delivery device 200 includes a gas nozzle 220 having a flat opening 222 and a delivery pipe 210 for connecting the wet gas generator 100 and the gas nozzle 220. The outer edge of the flat opening 222 forms an opening 221 facing the target object 400.

[0040] In a preferred embodiment of the present application, conductive member 230 may be any conductive element, such as a metal sheet, metal wire, or metal strip that contacts target object 400 and connects to grounding device 300. For example, the metal wire may be composed of many fine metal strands to form a flexible wire, which can better reduce electrostatic charge than standard metal wire. Of course, standard metal wire may also be used as needed.

[0041] In another preferred embodiment, the conductive device may include a mounting structure fixed or attached to the opening 221 and a conductive element fixed or attached to the mounting structure, wherein the conductive element contacts the target object 400 and connects to the grounding device 300. The mounting structure may be provided at the opening 221 in a detachable or fixed manner. For example, it may be inserted into the opening 221 and secured with screws, bolts, or adhesive.

[0042] Preferably, grounding device 300 can be any grounding element, such as a grounding cable with or without a grounding resistor connected to conductive element 230. Furthermore, target object 400 can be any object for which static electricity reduction is desired. This application is particularly suitable for planar target objects, such as moving insulating films / nets. Of course, this application can also be used to reduce static electricity charges on other objects.

[0043] When moisture with a specified relative humidity from a moisture generator was released at the opening of a moisture delivery device and directed to the junction between a target object and a conductive member connected to a grounding device, surprisingly, the original static voltage dropped by more than 90% after the target object passed through and separated from the conductive member. This finding was surprising because no air ionizer was used in this process to neutralize and reduce electrostatic charge.

[0044] It is not fully understood why static charge is drastically reduced, but one possible reason is that the high density of water molecules on the surface of the target object at a relative humidity of 60% or above provides an unusually favorable condition, "converting" the surface to a higher level of "conductivity" to discharge static charge. When the target object is electrically connected to ground, any static charge or static voltage on the insulator is difficult to ground when the air is dry or the relative humidity is low.

[0045] With the current market trend of device miniaturization, ESD control and mitigation technology is becoming increasingly challenging. This discovery will help provide an effective alternative to overcome the existing shortcomings and limitations of air ionizers. This invention will provide an alternative and useful solution in real-life ESD-sensitive manufacturing environments.

[0046] Figure 2 is an exploded view illustrating a wet gas delivery device according to a preferred embodiment of the present application. In this embodiment, wet gas delivery device 200 includes a gas nozzle 220 having a flat opening 222 and a delivery pipe 210 for connecting a wet gas generator 100 and gas nozzle 220. The outer edge of flat opening 222 forms a rectangular opening 221 facing target object 400. Two mounting slots 223 are located on opposite long inner sides of rectangular opening 221.

[0047] In the present application, the conductive member 230 includes a ribbon 231 attached to the opening 221 by being inserted into the mounting groove 223, and a metal wire 232 attached to the ribbon 231 and bent to form a plurality of small loops, which contact the target object 400 and connect the grounding device 300. Of course, the metal wire 232 is flexible enough not to damage the target object 400. In another embodiment, the metal wire 232 is inflexible and has a brush-like structure.

[0048] In another preferred embodiment, the metal wire 232 can be replaced by a soft metal sheet. In a preferred embodiment, the metal wire 232 or the soft metal sheet is made of soft stainless steel wire or metal sheet. Of course, other conductive wires can also be used. This embodiment is more preferred when the target object is a film / mesh. In a more preferred embodiment, the strip 231 can also be made of a conductive material. It should also be noted that although Figure 2Only one conductive member 230 is shown, but there may be more conductive members 230, depending on actual requirements. Those skilled in the art should note that the strip 231 may be arranged across the opening 221 in other ways, such as by fixing with bolts, screws or adhesives.

[0049] Figure 3 FIG. 4 is an exploded view showing a moisture transport device according to another preferred embodiment of the present application. Figure 3 and Figure 2 , differing from the embodiment in the design of the conductive member 230. In this embodiment, the wet gas delivery device 200 further includes a gas nozzle 220 having a flat opening 222 and a delivery pipe 210 for connecting the wet gas generator 100 and the gas nozzle 220. The outer edge of the flat opening 222 forms a rectangular opening 221 facing the target object 400. Two mounting slots 223 are located on opposite long inner sides of the rectangular opening 221.

[0050] Furthermore, the conductive device 230 includes a roller 234 disposed across the opening 221 and a metal wire 235 wound around the roller 234 to contact the target object 400 and connect to the grounding device 300. In the present application, the mounting shaft 233 of the roller 234 is inserted into the mounting slot 223 to attach to the opening 221. Preferably, the metal wire 235 wraps around the entire surface of the roller 234, and the mounted roller 234 is rotatable. In a more preferred embodiment, the roller 234 can also be made of a conductive material. Those skilled in the art should note that the roller 234 can be disposed across the opening 221 in other ways, such as by fastening with bolts, screws, or adhesive.

[0051] By using Figure 2-3 Similar results were obtained using the moisture delivery device shown in [ ]. When moisture with a specified relative humidity of 60% to 95%, preferably 75% to 90%, and more preferably 85% to 90%, was released from the moisture generator into the opening of the moisture delivery device and directed to the junction between the target object and the conductive member connected to the grounding device, surprisingly, the original static voltage dropped by more than 90% after the target object passed through and separated from the conductive member. This finding is surprising because no air ionizer was used in this process to neutralize and reduce the electrostatic charge.

[0052] Figure 4 Schematic diagram showing an electrostatic charge reducing device according to a second embodiment of the present application. Figure 4As shown, the electrostatic charge reduction device may include two moisture transport devices 200, each of which is connected to a moisture generator 100 and a grounding device 300. In the present application, the two moisture transport devices 200 can be constructed according to any of the aforementioned embodiments, and they are arranged in parallel along the target object 400 and placed in series. It should be noted that the two moisture transport devices 200 can be the same or different. In addition, the electrostatic charge reduction device can also include more moisture transport devices 200.

[0053] Figure 5 Schematic diagram showing an electrostatic charge reducing device according to a third embodiment of the present application. Figure 5 As shown, the electrostatic charge reduction device may include two moisture transport devices 200, each of which is connected to a corresponding moisture generator 100 and a corresponding grounding device 300. In the present application, the two moisture transport devices 200 can be constructed according to any one of the aforementioned embodiments, and they are arranged in parallel along the target object 400 and placed in series. It should be noted that the two moisture transport devices 200 can be the same or different. In addition, the electrostatic charge reduction device may also include more moisture transport devices 200 connected to the same or different moisture generators 100. In addition, the moisture transport device 200 can be connected to only one or different grounding devices 300. By adopting Figure 4-5 The embodiments in the present invention can provide more options for static reduction devices, thereby improving application flexibility.

[0054] Figure 6 1 is a schematic diagram illustrating an electrostatic charge reducing device according to a fourth embodiment of the present application. In this application, the electrostatic charge reducing device includes a wet medium generator for generating a wet medium having a specified relative humidity, a wet medium delivery device for delivering the wet medium to a target object, a grounding device connecting the wet medium delivery device to ground, and a conductive member that contacts the target object and is connected to the grounding device.

[0055] exist Figure 6 In the embodiment shown, the source of the wet medium is water. Therefore, the wet medium generator is a container 500 filled with water 510, and the wet medium delivery device includes a water delivery structure 610 and a water delivery medium 620. One end of the water delivery medium 620 is wound around the water delivery structure 610, and the other end contacts the conductive device 230. Figure 6 As shown, the lower portion of the water delivery structure 610 is immersed in the water 510, and the upper portion of the water delivery structure 610 is arranged above the water 510, so that the water 510 in the container 500 is transported in sequence through the water delivery medium 620, the conductive device 230 and the target object 400 to reduce electrostatic charge through capillary action.

[0056] In the present application, the container 500 can be made of any material and in any shape. For example, it can be a round glass container or an oval ceramic container, etc. The water transfer structure 610 can also be a round, oval, or square column, one end of which is immersed in the water 510 and the other end is located above the water 510 to facilitate water transfer via capillary action. Preferably, the water transfer structure 610 is a tapered cylindrical drum. The water transfer medium 620 can be any material in any shape that can transfer water via capillary action, such as cloth, tissue paper, etc. In a preferred embodiment, the water transfer medium 620 can be cloth. In this embodiment, water 510 is supplied to the conductive device 230 by placing the wet water transfer medium 620 on the upper portion of the conductive device 230, so that the water 510 is transferred to the conductive device 230 and then migrates downward to the lower portion of the conductive device 230.

[0057] In a simple embodiment of the present application, the water transfer medium 620 can be just a cloth strip, one end of which is wrapped around the water transfer structure 610 and the other end contacts the conductive device 230. By dipping / immersing a portion of the water transfer structure 610 wrapped with dry cloth into the container 500, the cloth strip is wetted, so that the water 510 in the container 510 will migrate upward to the dry cloth above the water level through capillary action.

[0058] In a more preferred embodiment of the present application, Figure 6 As shown, water supply structure 610 is a cylindrical drum, the lower portion of which is immersed in water 510. Water supply medium 620 includes a first water supply medium portion 621, a second water supply medium portion 622, and a third water supply medium portion 623. First water supply medium portion 621 winds upward from the lower portion of the cylindrical drum to the upper portion of the cylindrical drum. Second water supply medium portion 622 winds around first water supply medium portion 622 at the upper portion of the cylindrical drum. Third water supply medium portion 623 connects second water supply medium portion 622 and conductive device 230. In this embodiment, conductive device 230 includes a horizontal mounting structure 236 and a conductive element 237 disposed at the lower edge of horizontal mounting structure 236. Third water supply medium portion 623 is attached to horizontal mounting structure 236 so that water 510 can be delivered to conductive element 237. In a preferred embodiment, the width of the third water transmission medium portion 623 is slightly wider than the width of the horizontal mounting structure 236 , so that the lower edge of the third water transmission medium portion 623 can contact the conductive element 237 .

[0059] Surprisingly, when a controlled trace amount of water was supplied to the conductive element 237 (i.e., the conductive element 237 was wetted without water dripping from the conductive element 237), a significant difference was found in the further reduction of the static voltage compared to not supplying water to the conductive element 237. Typically, when a moving polyethylene film with a high static voltage of 20,000 V was unwound from a drum and passed through the wet conductive element 237, the static voltage dropped to an extremely low level of less than 500 V. Typically, the static voltage can be reduced by 97.5%.

[0060] It is not entirely clear why this phenomenon is observed. It may be due to the very high relative humidity near the wet conductive element 237 as water vapor is emitted from the wet conductive element near the polyethylene film surface, which optimizes ionization and grounding effects.

[0061] In a similar preferred embodiment of the present application, the electrostatic charge reduction device further includes a moisture generator for generating moisture having a specified relative humidity and a moisture delivery device for delivering the moisture to the target object. This can achieve similar technical effects. Equally surprising is that, regardless of whether moisture is added or removed, as long as the conductive element remains wet, an unexpectedly sharp drop in the electrostatic voltage is observed. The drop in electrostatic voltage now far exceeds the drop when only moisture is blown in without wetting the conductive element. This is interesting because, with well-controlled trace water migration / supply to the conductive element, the static reduction results can be altered regardless of whether moisture is blown in, and a stronger static reduction capability can be achieved.

[0062] We also discovered that when a water-saturated wet cloth was placed on a conductive element at ambient relative humidity without a stream of moisture blowing over it, water dripped onto the bottom of the element. However, when moisture was blown over the exposed conductive element, the dripping completely stopped. In other words, to prevent wet conductive elements from dripping, one technical solution is to continuously blow moisture through the conductive element, rather than simply leaving it in the surrounding atmosphere without moisture being blown over it.

[0063] In this embodiment, the conductive element 237 can be a metal wire 91 that is bent to form a plurality of small loops 92 that contact the target object. Optionally, the metal wire 91 is typically made of short-staple length stainless steel fibers or continuous filaments that are spun into single strands of yarn, and two or more strands of yarn are then plied together to form the wire. Optionally, as Figure 9 As shown, a small loop 92 of wire 91 is bonded to a tiny protective spiral wire coil 93. This is to protect the wire from excessive friction during use, thereby preventing or eliminating the need for frequent wire replacement due to rapid wear during continuous use. This tiny protective coil also prevents the wire from falling out, making the current application suitable for use in very clean, high-end cleanroom environments.

[0064] Figure 7 : is a schematic diagram showing an electrostatic charge reducing device according to a fifth embodiment of the present application. The embodiment is: Figure 7 and Figure 6 Similar, except that the water delivery structure 600 is further provided with a retractable mechanism 640 for retracting the water delivery medium 620, and the conductive device 230 includes two horizontal mounting structures 231 arranged horizontally, so that the conductive element 232 arranged at the lower edge of the two horizontal mounting structures 231 contacts the target object passing horizontally. In this embodiment, the water delivery medium has a double-layer structure. The retractable mechanism 640 is preferably used. The main purpose of the retractable mechanism 640 is to facilitate the pre-wetting of the cylindrical drum of the dry water delivery medium for immediate use, thereby saving time without having to wait for the water from the water container to flow along the entire length of the dry cloth due to its own slow capillary action. Optionally, two (2) or more layers of water delivery medium are respectively used to supply the two (2) or more layers of horizontal mounting structures 231 to further improve the static reduction efficiency. In the present application, the retractable mechanism 640 can be set in any type or manner and can be manual or automatic.

[0065] Figure 8 Schematic diagram showing an electrostatic charge reducing device according to a sixth embodiment of the present application. Figure 8 As shown, Figure 7 The embodiment is similar to the embodiment shown in FIG. , except that the two horizontal mounting structures 231 are tilted, allowing the conductive elements 232 disposed at the lower edges of the two horizontal mounting structures 231 to contact the target object 400 passing vertically. The tilted horizontal mounting structures 231 provide more application options, particularly when the highly charged film is moved vertically from top to bottom or from bottom to top, thereby optimizing the application and use of the application. In a preferred embodiment of the present application, this tilt angle can be adjusted.

[0066] The foregoing description of exemplary embodiments of the present application has been presented for purposes of illustration and description only and is not intended to be exhaustive or to limit the present application to the precise form disclosed.Many modifications and variations are possible in light of the above teachings.

[0067] The embodiments selected and described above are intended to illustrate the principles of the present application and its practical application so that others skilled in the art can utilize the present application and the various embodiments and make various modifications suitable for a particular application or intended use. Alternative embodiments will be readily apparent to those skilled in the art without departing from the spirit and scope of the present application. Therefore, the scope of the present application is defined by the appended claims rather than the foregoing description and the exemplary embodiments described therein.

Claims

1. An electrostatic charge reduction device, characterized in that: include: a wet medium generator for generating a wet medium having a specified relative humidity, a wet medium delivery device for delivering the wet medium to a target object, a grounding device connecting the wet medium delivery device and ground, and a conductive member both in contact with the target object and connected to the grounding device; The wet medium conveying device, the conductive component and the target object are arranged in sequence along the wet medium conveying path, so that the wet medium is conveyed through the wet medium conveying device, the conductive component and the target object in sequence to reduce electrostatic charge; the wet medium generator includes a container filled with water, and the wet medium conveying device includes a water conveying structure and a water conveying medium; one end of the water conveying medium is wound around the water conveying structure, and the other end contacts the conductive component; the lower part of the water conveying structure is immersed in the water, and the upper part of the water conveying structure is arranged above the water, so that the water in the container is conveyed through the water conveying medium, the conductive component and the target object in sequence, thereby reducing static electricity through capillary action.

2. The electrostatic charge reducing device according to claim 1, wherein: The water transmission structure is a cylindrical drum, the lower part of which is immersed in the water, and the water transmission medium includes a first water transmission medium part that is wound upward from the lower part of the cylindrical drum to the upper part of the cylindrical drum, a second water transmission medium part that winds the first water transmission medium part around the upper part of the cylindrical drum, and a third water transmission medium part that connects the second water transmission medium part and the conductive device.

3. The electrostatic charge reducing device according to claim 2, wherein: The conductive device includes a horizontal mounting structure and a conductive element provided at a lower edge of the horizontal mounting structure, and the third water transmission medium is partially attached to the horizontal mounting structure so that the water can be transported to the conductive element.

4. The electrostatic charge reducing device according to claim 3, wherein: The conductive element is a metal wire bent into a plurality of small loops that contact the target object, the wire being combined with a tiny protective spiral metal coil.

5. The electrostatic charge reducing device according to claim 3, wherein: The water transfer structure also has a retractable mechanism for retracting the water transfer medium.

6. The electrostatic charge reducing device according to claim 5, wherein: The conductive device includes two horizontal mounting structures, which are arranged horizontally or tilted so that the conductive elements arranged at the lower edges of the two horizontal mounting structures contact the target object passing horizontally or vertically, and the water transmission medium has a double-layer structure.

7. The electrostatic charge reducing device according to any one of claims 1 to 6, characterized in that: The electrostatic charge reducing apparatus further includes a moisture generator for generating moisture having a specified relative humidity and a wet medium conveying device for blowing the moisture into the conductive member.

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