Ion fan discharge needle frame structure

By using a double-layer discharge needle holder structure and a limiting groove design, the problems of electric field interference and high noise in existing ion fans are solved, resulting in more uniform ion generation and a longer service life, while reducing assembly complexity.

CN224571428UActive Publication Date: 2026-07-28苏州天华超净科技有限公司 +1
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
苏州天华超净科技有限公司
Filing Date
2025-07-28
Publication Date
2026-07-28

AI Technical Summary

Technical Problem

The needle holder structure of existing ion fans is a single-layer design, which causes mutual interference of electric field lines, resulting in uneven local electric field strength, reducing ion generation efficiency, and causing relatively high noise.

Method used

The discharge needle holder structure is designed with a double layer. The positive and negative discharge needle groups are arranged alternately in the horizontal direction and do not overlap in the vertical projection. The layered design of the ring partition is combined with the positioning block and positioning groove structure for positioning. Transparent insulating material and elastic buffer layer are used to ensure accurate needle tip pointing and reduce the impact of mechanical vibration.

Benefits of technology

It significantly improves the uniformity and spatial coverage of ion generation, reduces the ionization blind zone, lowers noise, extends the service life of the discharge needle, and simplifies the assembly process, making it easier for daily maintenance.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224571428U_ABST
    Figure CN224571428U_ABST
Patent Text Reader

Abstract

The utility model provides a kind of ion fan discharge needle frame structure, including needle frame body, positive discharge needle group, negative discharge needle group, needle frame cover, pass through the layered design of upper needle frame and lower needle frame, cooperate annular partition to form upper and lower layered structure, make positive discharge needle group and negative discharge needle group staggered arrangement in horizontal direction, and vertical projection does not overlap, effectively avoid positive and negative electric field mutual interference, form three-dimensional staggered ionization area, significantly improve ion generation uniformity and space coverage, reduce ionization blind area;By using dovetail slot or T slot structure upper and lower mounting hole, in combination with the first limiting groove of limiting block and the limiting strip of needle frame cover cooperation, realize the double positioning constraint of discharge needle, ensure that discharge needle horizontal direction is not deviated, and needle tip is always accurately pointed to the center, avoid displacement problem caused by mechanical vibration or long-term use.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of ion fan technology, and more specifically, to a discharge needle holder structure for an ion fan. Background Technology

[0002] An ion fan is an electrostatic eliminator that uses air ionization to transport ions to the surface of charged objects or charged spaces to eliminate static electricity. It possesses outstanding static elimination performance and effectively prevents static pollution and damage. Designed and manufactured based on the principles of point discharge and positive / negative charge neutralization, it generally consists of three parts: a high-voltage transformer, a fan, and a transmitter needle holder. A DC ion fan uses a high-voltage transformer to generate two stable DC high-voltage outputs, one positive and one negative, which are then transmitted to the air medium through transmitter needles. An AC ion fan uses a transformer to output a single AC high-voltage to the air medium through transmitter needles. The positive and negative DC or AC high voltages ionize the air, producing positive and negative ions. These ions are then transported into the air by the fan, neutralizing the positive and negative static charges on objects and products, thereby eliminating static electricity.

[0003] The closest existing technology to this application for an ion fan needle holder structure is document number CN216626142U, which discloses an ion fan including a front housing, a rear housing, and an antistatic component. The antistatic component is located inside the front housing, and the front housing and the rear housing are connected to form a hollow cavity structure. The front housing, the rear housing, and the antistatic component constitute a whole. The antistatic component includes an antistatic mechanism, a cleaning mechanism, and a fan mechanism. The antistatic mechanism includes at least one discharge needle, a discharge needle holder, a contact spring, and a discharge needle base. The cleaning mechanism includes a motor, a cleaning end, a support rod, and a positioner. The fan mechanism includes a front air window, a rear air window, and a fan. The front air window is arranged on the front housing, and the rear air window is arranged on the rear housing.

[0004] The existing needle holder structure uses a single-layer needle head and needle seat that are detachably connected. The single-layer setting will cause the electric field lines to interfere with each other, resulting in uneven local electric field strength, reducing ion generation efficiency, causing incomplete static neutralization in some areas, affecting overall performance, and the needle head being distributed in the middle will make the ion fan noisier when blowing.

[0005] In view of this, the present invention proposes a double-layered, low-noise ion fan discharge needle holder structure. Utility Model Content

[0006] The purpose of this invention is to propose a double-layered, low-noise ion fan discharge needle holder structure.

[0007] An ion fan discharge needle holder structure, characterized in that it comprises:

[0008] The needle holder body is made of insulating material and is divided into an upper needle holder 10 and a lower needle holder 20. An annular partition 30 is provided between the upper needle holder 10 and the lower needle holder 20 to form an upper and lower layered structure.

[0009] The positive discharge needle group 40 is evenly distributed in the upper mounting hole 101 of the upper needle holder 10, and the needle tip of the positive discharge needle group 40 extends toward the center of the needle holder body.

[0010] The negative electrode discharge needle group 50 is evenly distributed in the lower mounting hole of the lower needle frame 20, and the needle tip of the negative electrode discharge needle group 50 extends toward the center of the needle frame body. The negative electrode discharge needle group 50 and the positive electrode discharge needle group 40 are arranged alternately in the horizontal direction.

[0011] The needle holder cover includes an upper needle holder cover 60 and a lower needle holder cover 70, which cover the upper and lower parts of the needle holder body, respectively. The outer edges of the upper needle holder cover 60 and the lower needle holder cover 70 are provided with snap-fit ​​ring plates 80 that match the outer diameter of the annular partition 30.

[0012] In some embodiments, the distance between the upper needle holder 10 and the lower needle holder 20 is 10-15mm, and the vertical projections of the positive discharge needle group 40 of the upper needle holder 10 and the negative discharge needle group 50 of the lower needle holder 20 do not overlap, so that the distribution is uniform, and a more preferred distance is 12mm.

[0013] In some embodiments, each upper mounting hole 101 and each lower mounting hole is either a dovetail groove or a T-groove, used to limit the horizontal position of the positive discharge needle group 40 and the negative discharge needle group 50.

[0014] In some embodiments, each upper mounting hole 101 and each lower mounting hole is further provided with a limiting block 90 on both the left and right sides. The limiting block 90 is provided with a first limiting groove 901 in the middle. A limiting strip 701 is provided covering the lower needle holder cover 60 and covering the upper needle holder cover 70. The cross-sectional shape of the limiting strip 701 matches the limiting groove, so as to play the role of installation and positioning.

[0015] Furthermore, the connection points between the first limiting groove 901 and the upper needle holder 10 and the lower needle holder 20 are all rounded, serving as a guide.

[0016] In some embodiments, both the needle holder body and the needle holder cover are made of transparent insulating material, which facilitates observation of the internal structure and installation of the upper and lower layers. The transparent insulating material is either polycarbonate (PC) or polymethyl methacrylate (PMMA).

[0017] In some embodiments, the limiting strip 701 is further provided with a plurality of second limiting grooves 702 at intervals on the side near the needle holder body. Each second limiting groove 702 is correspondingly connected to the end of the positive discharge needle group 40 away from the needle holder body, and is used to assist in limiting the position of the positive discharge needle group 40 and the negative discharge needle group 50.

[0018] In some embodiments, the upper and lower ends of the side of the needle holder body are also provided with waist-shaped grooves 703, and adjacent waist-shaped grooves 703 are staggered to facilitate the user to disassemble and assemble the upper needle holder cover 60 and the lower needle holder cover 70.

[0019] In some embodiments, an elastic buffer layer is provided between the limiting block 90 and the limiting strip 701, and the elastic buffer layer is made of silicone or polyurethane material.

[0020] In some embodiments, the needle holder body and the needle holder cover are provided with threaded connection parts 704 around their perimeter, and the threaded connection parts 704 are connected to the outer shell of the ion blower body by threaded fasteners.

[0021] The beneficial effects of this utility model are as follows: This utility model proposes an ion fan discharge needle holder structure. Through the layered design of the upper and lower needle holders, combined with the annular partition, an upper and lower layered structure is formed, allowing the positive and negative discharge needle groups to be staggered in the horizontal direction without overlapping in the vertical projection. This effectively avoids mutual interference between the positive and negative electric fields, forming a three-dimensional staggered ionization region, significantly improving the uniformity of ion generation and spatial coverage, and reducing the ionization blind zone. By using upper and lower mounting holes with dovetail or T-groove structures, combined with the first limiting groove of the limiting block and the limiting strip of the needle holder cover, dual positioning constraints of the discharge needles are achieved, ensuring that the discharge needles are free in the horizontal direction. The needle tip is always precisely aligned with the center, preventing displacement issues caused by mechanical vibration or long-term use. The rounded corners of the limiting groove and connection points, along with the elastic buffer layer, further reduce installation resistance, absorb external vibrations and impacts, and extend the service life of the discharge needle. The upper and lower needle holder covers are quickly snapped into place with the needle holder body via snap-fit ​​rings, and the threaded connection achieves rigid fixation to the fan body. Assembly requires no complex tools, significantly reducing assembly and disassembly time. The staggered layout of the waist-shaped grooves provides convenient force application points, allowing operators to quickly separate the needle holder covers. Simultaneously, the use of transparent insulating material makes the internal discharge needle status visible, facilitating daily use and troubleshooting. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of an ion fan discharge needle holder structure according to this application.

[0023] Figure 2 This is an exploded structural diagram of an ion fan discharge needle holder structure according to this application.

[0024] Figure 3 This is a schematic diagram of the needle holder body of an ion fan discharge needle holder structure according to this application.

[0025] Figure 4 This is a top view schematic diagram of an ion fan discharge needle holder structure according to this application.

[0026] Figure 5 This is a side view schematic diagram of an ion fan discharge needle holder structure according to this application.

[0027] Figure 6 This is a cross-sectional view (AA) of an ion fan discharge pin holder structure according to this application.

[0028] Explanation of main component symbols

[0029] Upper needle holder 10, upper mounting hole 101, lower needle holder 20, annular partition 30, positive discharge needle group 40, negative discharge needle group 50, upper needle holder cover 60, lower needle holder cover 70, limiting strip 701, second limiting groove 702, waist-shaped groove 703, threaded connection part 704, snap ring plate 80, limiting block 90, first limiting groove 901.

[0030] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation

[0031] The following embodiments are described to aid in understanding this application. These embodiments are not, and should not be, construed in any way as limiting the scope of protection of this application.

[0032] In the following description, those skilled in the art will recognize that throughout this discussion, components may be described as individual functional units (which may include subunits), but those skilled in the art will recognize that various components or portions thereof may be divided into individual components or may be integrated together (including integrated within a single system or component).

[0033] Furthermore, the connection between components or systems is not intended to be limited to a direct connection; on the contrary, data between these components may be modified, reformatted, or otherwise altered by intermediate components. Additionally, other or fewer connections may be used. It should also be noted that the terms "connection," "link," or "input" should be understood to include direct connections, indirect connections via one or more intermediate devices, and wireless connections. Example 1:

[0034] like Figure 1 The diagram shown is an overall structural schematic of an ion fan discharge needle holder structure according to this application; as shown... Figure 2 The diagram shown is an exploded structural schematic of an ion fan discharge needle holder structure according to this application; as shown Figure 3The diagram shown is a structural schematic of the needle holder body of an ion fan discharge needle holder structure according to this application; as shown... Figure 4 The image shown is a top view schematic diagram of an ion fan discharge needle holder structure according to this application; as shown... Figure 5 The image shown is a side view schematic diagram of an ion fan discharge needle holder structure according to this application; as shown... Figure 6 The figure shown is a cross-sectional view (AA) of an ion fan discharge pin holder structure according to this application.

[0035] An ion fan discharge needle holder structure, characterized in that it comprises:

[0036] The needle holder body is made of insulating material and is divided into an upper needle holder 10 and a lower needle holder 20. An annular partition 30 is provided between the upper needle holder 10 and the lower needle holder 20 to form an upper and lower layered structure.

[0037] The positive discharge needle group 40 is evenly distributed in the upper mounting hole 101 of the upper needle holder 10, and the needle tip of the positive discharge needle group 40 extends toward the center of the needle holder body.

[0038] The negative electrode discharge needle group 50 is evenly distributed in the lower mounting hole of the lower needle frame 20, and the needle tip of the negative electrode discharge needle group 50 extends toward the center of the needle frame body. The negative electrode discharge needle group 50 and the positive electrode discharge needle group 40 are arranged alternately in the horizontal direction.

[0039] The needle holder cover includes an upper needle holder cover 60 and a lower needle holder cover 70, which cover the upper and lower parts of the needle holder body, respectively. The outer edges of the upper needle holder cover 60 and the lower needle holder cover 70 are provided with snap-fit ​​ring plates 80 that match the outer diameter of the annular partition 30.

[0040] In some embodiments, the distance between the upper needle holder 10 and the lower needle holder 20 is 10-15mm, and the vertical projections of the positive discharge needle group 40 of the upper needle holder 10 and the negative discharge needle group 50 of the lower needle holder 20 do not overlap, so that the distribution is uniform, and a more preferred distance is 12mm.

[0041] Each upper mounting hole 101 and each lower mounting hole is either a dovetail groove or a T-groove, used to limit the horizontal position of the positive electrode discharge needle group 40 and the negative electrode discharge needle group 50.

[0042] Each upper mounting hole 101 and each lower mounting hole is provided with a limiting block 90 on both the left and right sides. The limiting block 90 has a first limiting groove 901 in the middle. A limiting strip 701 is provided below the upper needle holder cover 60 and above the lower needle holder cover 70. The cross-sectional shape of the limiting strip 701 matches the limiting groove, so as to play the role of installation and positioning.

[0043] Furthermore, the connection points between the first limiting groove 901 and the upper needle holder 10 and the lower needle holder 20 are all rounded, serving as a guide.

[0044] Both the needle holder body and the needle holder cover are made of transparent insulating material, which facilitates observation of the internal structure and installation of the upper and lower layers. The transparent insulating material is either polycarbonate (PC) or polymethyl methacrylate (PMMA).

[0045] The limiting strip 701 is also provided with a plurality of second limiting grooves 702 at intervals on the side near the needle holder body. Each second limiting groove 702 is correspondingly connected to the end of the positive discharge needle group 40 away from the needle holder body, and is used to assist in limiting the position of the positive discharge needle group 40 and the negative discharge needle group 50.

[0046] The upper and lower ends of the side of the needle holder body are also provided with waist-shaped grooves 703. The adjacent waist-shaped grooves 703 are staggered, which makes it easy for users to disassemble and install the upper needle holder cover 60 and the lower needle holder cover 70.

[0047] An elastic buffer layer is also provided between the limiting block 90 and the limiting strip 701, and the elastic buffer layer is made of silicone or polyurethane material.

[0048] The needle holder body and the needle holder cover are provided with threaded connection parts 704 around their perimeter. The threaded connection parts 704 are connected to the outer shell of the ion blower body through threaded fasteners.

[0049] The beneficial effects of this utility model are as follows: This utility model proposes an ion fan discharge needle holder structure. Through the layered design of the upper and lower needle holders, combined with the annular partition, an upper and lower layered structure is formed, allowing the positive and negative discharge needle groups to be staggered in the horizontal direction without overlapping in the vertical projection. This effectively avoids mutual interference between the positive and negative electric fields, forming a three-dimensional staggered ionization region, significantly improving the uniformity of ion generation and spatial coverage, and reducing the ionization blind zone. By using upper and lower mounting holes with dovetail or T-groove structures, combined with the first limiting groove of the limiting block and the limiting strip of the needle holder cover, dual positioning constraints of the discharge needles are achieved, ensuring that the discharge needles are free in the horizontal direction. The needle tip is always precisely aligned with the center, preventing displacement issues caused by mechanical vibration or long-term use. The rounded corners of the limiting groove and connection points, along with the elastic buffer layer, further reduce installation resistance, absorb external vibrations and impacts, and extend the service life of the discharge needle. The upper and lower needle holder covers are quickly snapped into place with the needle holder body via snap-fit ​​rings, and the threaded connection achieves rigid fixation to the fan body. Assembly requires no complex tools, significantly reducing assembly and disassembly time. The staggered layout of the waist-shaped grooves provides convenient force application points, allowing operators to quickly separate the needle holder covers. Simultaneously, the use of transparent insulating material makes the internal discharge needle status visible, facilitating daily use and troubleshooting.

[0050] Although this application discloses several aspects and embodiments, other aspects and embodiments will be obvious to those skilled in the art. Various modifications and improvements can be made without departing from the concept of this application, and these all fall within the scope of protection of this application. The various aspects and embodiments disclosed in this application are for illustrative purposes only and are not intended to limit this application. The actual scope of protection of this application is determined by the claims.

Claims

1. An ion fan discharge needle holder structure, characterized in that, include: The needle holder body is made of insulating material and is divided into an upper needle holder (10) and a lower needle holder (20). An annular partition (30) is provided between the upper needle holder (10) and the lower needle holder (20) to form an upper and lower layered structure. The positive discharge needle group (40) is evenly distributed in the upper mounting hole (101) of the upper needle frame (10), and the needle tip of the positive discharge needle group (40) extends toward the center of the needle frame body. The negative electrode discharge needle group (50) is evenly distributed in the lower mounting hole of the lower needle frame (20), and the needle tip of the negative electrode discharge needle group (50) extends toward the center of the needle frame body. The negative electrode discharge needle group (50) and the positive electrode discharge needle group (40) are arranged alternately in the horizontal direction. The needle holder cover includes an upper needle holder cover (60) and a lower needle holder cover (70), which cover the upper and lower parts of the needle holder body, respectively. The outer edges of the upper needle holder cover (60) and the lower needle holder cover (70) are provided with snap-fit ​​ring plates (80) that match the outer diameter of the annular partition (30).

2. The ion fan discharge needle holder structure as described in claim 1, characterized in that: The distance between the upper needle holder (10) and the lower needle holder (20) is 10-15mm, and the vertical projections of the positive discharge needle group (40) of the upper needle holder (10) and the negative discharge needle group (50) of the lower needle holder (20) do not overlap, so that the distribution is uniform.

3. The ion fan discharge needle holder structure as described in claim 1, characterized in that: Each upper mounting hole (101) and each lower mounting hole is either a dovetail groove or a T-groove, used to limit the horizontal position of the positive discharge needle group (40) and the negative discharge needle group (50).

4. The ion fan discharge needle holder structure as described in claim 1, characterized in that: Each upper mounting hole (101) and each lower mounting hole is provided with a limiting block (90) on both the left and right sides. The limiting block (90) has a first limiting groove (901) in the middle. A limiting strip (701) is provided below the upper needle holder cover (60) and above the lower needle holder cover (70). The cross-sectional shape of the limiting strip (701) matches the limiting groove, which plays the role of installation positioning.

5. The ion fan discharge needle holder structure as described in claim 4, characterized in that: The first limiting groove (901) has rounded corners at the connection points with the upper needle holder (10) and the lower needle holder (20), which serve as a guide.

6. The ion fan discharge needle holder structure as described in claim 1, characterized in that: Both the needle holder body and the needle holder cover are made of transparent insulating material, which facilitates observation of the internal structure and installation of the upper and lower layers. The transparent insulating material is either polycarbonate (PC) or polymethyl methacrylate (PMMA).

7. The ion fan discharge needle holder structure as described in claim 4, characterized in that: The limiting strip (701) is provided with a plurality of second limiting grooves (702) at intervals on the side near the needle holder body. Each second limiting groove (702) is connected to the end of the positive discharge needle group (40) away from the needle holder body, and is used to help limit the position of the positive discharge needle group (40) and the negative discharge needle group (50).

8. The ion fan discharge needle holder structure as described in claim 1, characterized in that: The upper and lower ends of the side of the needle holder body are also provided with waist-shaped grooves (703). The adjacent waist-shaped grooves (703) are staggered, which makes it convenient for users to disassemble and install the upper needle holder cover (60) and the lower needle holder cover (70).

9. The ion fan discharge needle holder structure as described in claim 4, characterized in that: An elastic buffer layer is also provided between the limiting block (90) and the limiting strip (701), and the elastic buffer layer is made of silicone or polyurethane material.

10. The ion fan discharge needle holder structure as described in claim 1, characterized in that: The needle holder body and the needle holder cover are provided with threaded connection parts (704) around their perimeter. The threaded connection parts (704) are connected to the outer shell of the ion blower body through threaded fasteners.