Device for enhancing guidance quality of electron emission

Abstract

The invention belongs to the technical field of electron flow emitting devices, and particularly relates to a device for enhancing electron emission guidance quality, which comprises a base, a guide piece column and at least one lamp filament, each pair of conductive columns penetrate through the base and are electrically connected with a power supply, and the lamp filament is electrically connected with the conductive columns. The conductive column is fixedly installed on the base, the lamp filament is installed on the base, the insulating parts are arranged at the two ends of the connecting position of the conductive column and the base respectively and wrap the conductive column, and the guiding part is fixedly installed on the base and located behind the lamp filament so that the situation that electrons emitted by the lamp filament thermally flow to a non-working area to be dissipated can be reduced. The density of the electron flow is controlled, the use of multiple working areas is met, and the dissipation direction of the electron flow can be controlled through the guide piece.

Description

Technical Field

[0001] The present invention belongs to the technical field of electron flow emission devices, in particular to a device for enhancing the guidance of electron emission. Background Art

[0002] In applications such as current neutralization, electron beam heating, and plasma generation, thermionic electron emission devices (TEMs) have become the preferred technology for generating space electron fluxes due to their ease of operation, flexible control, and low cost. However, traditional filament TEMs have significant technical drawbacks: when there is a distance between the filament and the active working area, the electron flux generated by thermionic emission can escape in a non-directional manner, causing a significant proportion of electrons to escape into the non-working area. This not only wastes energy but also affects the processing quality of the target workpiece.

[0003] Therefore, it is necessary to design an emission device that can control the divergence direction of the electron flow. Summary of the Invention

[0004] Based on this, this solution provides a device for enhancing the guidance of electron emission, which can control the electron flow to escape to non-working areas, reduce energy waste, and adjust the divergence direction of the electron flow.

[0005] The technical solution of the present invention to solve the above technical problems is as follows:

[0006] A device for enhancing the guidance of electron emission comprises: a base, a guide member, and at least one pair of conductive posts insulated from the base, at least one filament being connected between a pair of the conductive posts, or two or more pairs of the conductive posts being electrically insulated from each other, each pair of the conductive posts being connected to a filament; each pair of the conductive posts being connected to an independent external power supply; a fastener being provided between the guide member and the base for fixedly connecting the two; the guide member being a conductive metal plate structure; the guide member and the base being at the same potential; the potential difference between the guide member and the working area being greater than the magnitude of the alternating current required for the filament to thermally emit electrons; and the guide member being provided with at least one guiding surface facing the electron flow working area.

[0007] Optionally, in one embodiment of the present invention, at least one supporting structure is further included for providing physical support for the filament, and the supporting structure is provided on the base.

[0008] Optionally, in one embodiment of the present invention, the guide member is a sheet-like structure, and the guide member is provided with an avoidance opening to avoid other structural components.

[0009] Optionally, in one embodiment of the present invention, an inclined guide surface is provided on each side of the guide member, and the inclined guide surfaces on both sides have the same size.

[0010] Optionally, in one embodiment of the present invention, two or more inclined guide surfaces with adjustable inclination angles are respectively provided on both sides of the guide member, and the sizes of the inclined guide surfaces are different.

[0011] Compared with the prior art, the device for enhancing the electron emission guidance provided by the present invention has the following characteristics:

[0012] A guide for electron flow is provided behind the filament, and the guide is mounted on the mounting structure of the filament, making the overall structure more compact and saving installation space.

[0013] The provision of the guide member can prevent a portion of the electron flow originally escaping to the non-working area and guide it to diverge to the working area, thereby increasing the electron flow density and improving the efficiency of the filament thermal emission.

[0014] The guide piece is also provided with inclined guide surfaces with adjustable angles on both sides. By adjusting the inclination angle, the divergence direction of the electron flow can be controlled. In the case of multiple filaments, the guide piece is also provided with more than two inclined guide surfaces with independently adjustable inclination angles, which can make the electron flow diverge in different directions. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 This is a schematic structural diagram of a device for enhancing the guidance of electron emission according to Example 1 of the present invention;

[0017] Figure 2 This is a schematic structural diagram of a device for enhancing the guidance of electron emission according to embodiment 2 of the present invention;

[0018] Figure 3 This is a schematic structural diagram of a device for enhancing the guidance of electron emission according to embodiment 3 of the present invention;

[0019] Figure 4 This is a schematic structural diagram of a device for enhancing the guidance of electron emission according to embodiment 4 of the present invention;

[0020] Figure 5 This is a schematic structural diagram of a device for enhancing the guidance of electron emission according to embodiment 5 of the present invention;

[0021] Reference numerals: base 1 , conductive column 2 , limiting base 201 , filament 3 , guide member 4 , fastener 401 , conductive base 5 , clamping block 501 , connecting member 502 , tubular insulating member 503 , fixed base 504 . DETAILED DESCRIPTION

[0022] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The following will further describe the technical solution of the present invention in conjunction with the drawings of the embodiments of the present invention, and the present invention is not limited to the following specific embodiments.

[0023] It should be understood that the same or similar numbers in the drawings of the embodiments correspond to the same or similar parts. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom" and the like indicating an orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0024] Since the existing thermal electron emission device has electron scattering and wastes energy, it cannot meet the needs of more than two working areas and requires the use of electron currents of different densities. Therefore, an efficient filament 3 clamping device is designed. The specific solution is as follows:

[0025] Example 1

[0026] like Figure 1 As shown, a device for enhancing the guidance of electron emission includes: a base 1, a guide member 4, and a pair of conductive posts 2 insulated and connected to the base 1, a filament 3 connected between the pair of conductive posts 2, the conductive posts 2 being electrically connected to an external power supply, the guide member 4 being located behind the filament 3, a fastener 401 being provided between the guide member 4 and the base 1 for fixing the two, the guide member 4 being a conductive metal plate structure, the guide member 4 and the base 1 being at the same potential, the potential of the guide member 4 being set lower than the working area, the potential difference being greater than the magnitude of the alternating current required for the thermal emission of electrons by the filament 3, and the guide member 4 being provided with at least one guiding surface facing the electron flow working area.

[0027] The conductive column 2 is a rod-shaped structure, with a limiting portion provided in the middle of the conductive column 2. The conductive column 2 is inserted into the base 1 and a tubular insulating component is provided at the insertion position. The upper end of the conductive column 2 is provided with a connecting block fixed with screws, and the filament 3 is clamped with the connecting block and the upper end of the conductive column 2. The conductive column 2 is also provided with a limiting base 201, which is screwed to the base 1 and the limiting base 201 is an insulating component. A plug hole is provided at the bottom of the conductive column 2 for quickly connecting the conductive column 2 to the power supply.

[0028] The guide member 4 is a sheet structure, and its length covers the length of the base 1. The guide member 4 is provided with an avoidance opening to avoid the conductive column 2. Specifically, avoidance openings are provided on both sides of the guide member 4 to avoid the conductive column 2 and the supporting structure, and there is no physical contact between the guide member 4 and the conductive column 2. Two fasteners 401 are provided on both sides of the guide member 4, and a stud is provided at the lower end of the fastener 401, and a screw hole is provided at the upper end. The lower end is used to connect to the base 1, and the upper end is used to install the guide member 4.

[0029] In this embodiment, an inclined guide surface is provided on both sides of the guide member 4 , and the inclined guide surfaces on both sides have the same size, and the length of the inclined guide surface is the same as the length of the guide member 4 .

[0030] Example 2

[0031] like Figure 2 As shown, a device for enhancing the guidance of electron emission includes: a base 1, a guide member 4, and a pair of conductive posts 2 insulated and connected to the base 1, a filament 3 connected between the pair of conductive posts 2, the conductive posts 2 being electrically connected to an external power supply, the guide member 4 being located behind the filament 3, a fastener 401 being provided between the guide member 4 and the base 1 for fixing the two, the guide member 4 being a conductive metal plate structure, the guide member 4 and the base 1 being at the same potential, the potential of the guide member 4 being set lower than the working area, the potential difference being greater than the magnitude of the alternating current required for the thermal emission of electrons by the filament 3, and the guide member 4 being provided with at least one guiding surface facing the electron flow working area.

[0032] The conductive column 2 is a rod-shaped structure, with a limiting portion provided in the middle of the conductive column 2. The conductive column 2 is inserted into the base 1 and a tubular insulating component is provided at the insertion position. The upper end of the conductive column 2 is provided with a connecting block fixed with screws, and the filament 3 is clamped with the connecting block and the upper end of the conductive column 2. The conductive column 2 is also provided with a limiting base 201, which is screwed to the base 1 and the limiting base 201 is an insulating component. A plug hole is provided at the bottom of the conductive column 2 for quickly connecting the conductive column 2 to the power supply.

[0033] The guide member 4 is a sheet structure, and its length covers the length of the base 1. The guide member 4 is provided with an avoidance opening to avoid the conductive column 2. Specifically, avoidance openings are provided on both sides of the guide member 4 to avoid the conductive column 2 and the supporting structure, and there is no physical contact between the guide member 4 and the conductive column 2. Two fasteners 401 are provided on both sides of the guide member 4, and a stud is provided at the lower end of the fastener 401, and a screw hole is provided at the upper end. The lower end is used to connect to the base 1, and the upper end is used to install the guide member 4.

[0034] In this embodiment, the guide member 4 is a flat sheet structure, and its length covers the length of the base 1 .

[0035] Example 3

[0036] like Figure 3 As shown, a device for enhancing the guidance of electron emission includes: a base 1, a guide member 4, and a pair of conductive posts 2 insulated and connected to the base 1, a filament 3 connected between the pair of conductive posts 2, the conductive posts 2 being electrically connected to an external power supply, the guide member 4 being located behind the filament 3, a fastener 401 being provided between the guide member 4 and the base 1 for fixing the two, the guide member 4 being a conductive metal plate structure, the guide member 4 and the base 1 being at the same potential, the potential of the guide member 4 being set lower than the working area, the potential difference being greater than the magnitude of the alternating current required for the thermal emission of electrons by the filament 3, and the guide member 4 being provided with at least one guiding surface facing the electron flow working area.

[0037] The conductive column 2 is a rod-shaped structure, with a limiting portion provided in the middle of the conductive column 2. The conductive column 2 is inserted into the base 1 and a tubular insulating component is provided at the insertion position. The upper end of the conductive column 2 is provided with a connecting block fixed with screws, and the filament 3 is clamped with the connecting block and the upper end of the conductive column 2. The conductive column 2 is also provided with a limiting base 201, which is screwed to the base 1 and the limiting base 201 is an insulating component. A plug hole is provided at the bottom of the conductive column 2 for quickly connecting the conductive column 2 to the power supply.

[0038] The guide member 4 is a sheet structure, and its length covers the length of the base 1. The guide member 4 is provided with an avoidance opening to avoid the conductive column 2. Specifically, avoidance openings are provided on both sides of the guide member 4 to avoid the conductive column 2 and the supporting structure, and there is no physical contact between the guide member 4 and the conductive column 2. The guide member 4 is provided with six fasteners 401, and the lower end of the fastener 401 is provided with a stud, and the upper end is provided with a screw hole. The lower end is used to connect to the base 1, and the upper end is used to install the guide member 4.

[0039] In this embodiment, the guide member 4 is divided into three parts: left, middle and right. An inclined guide surface is provided on both sides of each part, and the size of the inclined guide surface of each part is different. The size of the inclined guide surface of the same part is also different. The guide member 4 of the three parts guides the electron flow to different divergent directions to meet work requirements. The guide member 4 of each part can be disassembled and assembled separately.

[0040] Example 4

[0041] like Figure 4 As shown, a device for enhancing the guidance of electron emission includes: a base 1, a guide member 4, and three pairs of conductive pillars 2 insulated and connected to the base 1, the three pairs of conductive pillars 2 are electrically insulated from each other, the three pairs of conductive pillars 2 are respectively connected to a filament 3, the conductive pillars 2 are electrically connected to an external power supply, the guide member 4 is located behind the filament 3, a fastener 401 is provided between the guide member 4 and the base 1 for fixing the two, the guide member 4 is a conductive metal plate structure, the guide member 4 and the base 1 are at the same potential, the potential of the guide member 4 is set to be lower than the working area, and the potential difference is greater than the size of the alternating current required for the thermal emission of electrons by the filament 3, and the guide member 4 has at least one guiding surface facing the electron flow working area.

[0042] The base 1 is provided with a plurality of circular through holes for mounting the conductive column 2 located in the middle of the base 1 .

[0043] The conductive column 2 is a rod-shaped structure, with a limiting portion provided in the middle of the conductive column 2. The conductive column 2 is inserted into the base 1 and a tubular insulating component is provided at the insertion position. The upper end of the conductive column 2 is provided with a connecting block fixed with screws, and the filament 3 is clamped with the connecting block and the upper end of the conductive column 2. The conductive column 2 is also provided with a limiting base 201, which is screwed to the base 1 and the limiting base 201 is an insulating component. A plug hole is provided at the bottom of the conductive column 2 for quickly connecting the conductive column 2 to the power supply.

[0044] The guide member 4 is a sheet structure, and its length covers the length of the base 1. The guide member 4 is provided with an avoidance opening to avoid the conductive column 2. Specifically, avoidance openings are provided on both sides of the guide member 4 to avoid the conductive column 2 and the supporting structure, and there is no physical contact between the guide member 4 and the conductive column 2. The guide member 4 is provided with six fasteners 401, and the lower end of the fastener 401 is provided with a stud, and the upper end is provided with a screw hole. The lower end is used to connect to the base 1, and the upper end is used to install the guide member 4.

[0045] The guide member 4 is divided into three parts: left, middle and right. An inclined guide surface is provided on both sides of each part, and the size of the inclined guide surface of each part is different. The size of the inclined guide surface of the same part is also different, so as to achieve independent control of each filament 3 to emit electron flow, and guide the electron flow to different divergent directions through the guide members 4 of the three parts to meet work requirements. The guide member 4 of each part can be disassembled and assembled separately. Each part of the guide member 4 is correspondingly configured with a pair of conductive columns 2, and each pair of conductive columns 2 is independently connected to the power supply.

[0046] Example 5

[0047] like Figure 5 As shown, a device for enhancing the guidance of electron emission includes: a base 1, a guide member 4, and a pair of conductive posts 2 insulated and connected to the base 1, two filaments 3 are connected between the conductive posts 2, and a support structure is provided on the base 1. The support structure includes a fixing member, and the fixing member includes a pair of conductive seats 5, a connecting member 502, and two clamping blocks 501. The conductive seats 5 are mounted on the base 1, and the connection portion between the conductive seats 5 and the base 1 is sleeved with an insulating member. The connecting member 502 is mounted on the conductive seats 5, and the clamping block 501 is mounted on the upper end of the conductive seats 5, and one end of the filament 3 is clamped by the clamping block 501 and the conductive seats 5.

[0048] The conductive column 2 is a rod-shaped structure, with a limiting portion provided in the middle of the conductive column 2. The conductive column 2 is inserted into the base 1 and a tubular insulating component is provided at the insertion position. The upper end of the conductive column 2 is provided with a connecting block fixed with screws, and the filament 3 is clamped with the connecting block and the upper end of the conductive column 2. The conductive column 2 is also provided with a limiting base 201, which is screwed to the base 1 and the limiting base 201 is an insulating component. A plug hole is provided at the bottom of the conductive column 2 for quickly connecting the conductive column 2 to the power supply.

[0049] The conductive seat 5 is installed on the base 1. A tubular insulating part 503 is provided at the installation position of the conductive seat 5 to insulate and isolate the conductive seat 5 from the base 1. A fixed base 504 is also provided at the lower end of the conductive seat 5 and the fixed base 504 is fixedly installed on the base 1. The fixed base 504 is an insulating component.

[0050] The guide member 4 is located behind the filament 3. A fastener 401 is provided between the guide member 4 and the base 1 for fixing the two. The guide member 4 is a conductive metal plate structure. The guide member 4 and the base 1 are at the same potential. The potential of the guide member 4 is set to be lower than the working area, and the potential difference is greater than the size of the alternating current required for the thermal emission of electrons by the filament 3. The guide member 4 is provided with at least one guide surface facing the electron flow working area.

[0051] The guide member 4 is a sheet structure, and its length covers the length of the base 1. The guide member 4 is provided with an avoidance opening to avoid the conductive column 2. Specifically, avoidance openings are provided on both sides of the guide member 4 to avoid the conductive column 2 and the supporting structure, and there is no physical contact between the guide member 4 and the conductive column 2. Two fasteners 401 are provided on both sides of the guide member 4, and a stud is provided at the lower end of the fastener 401, and a screw hole is provided at the upper end. The lower end is used to connect to the base 1, and the upper end is used to install the guide member 4.

[0052] In this embodiment, the guide member 4 is a flat sheet structure, and its length covers the length of the base 1 .

[0053] Working principle:

[0054] The guide member 4 and the base 1 maintain the same potential. The electric field formed by the potential difference between the guide member 4 and the working area has an intensity greater than the electric field required for thermal emission of the filament, which helps electrons escape from the filament and be accelerated or deflected to the working area along the direction of the field strength.

[0055] The inclined guide surface of the guide member 4 regulates the electric field distribution through geometric configuration. The inclined guide surface makes the electric field lines diverge / converge. The symmetrical guide surfaces on both sides form a symmetrical distribution of the electric field, which restricts the lateral diffusion of electrons.

[0056] This solution is used for a device with extremely strong electron emission guidance. A guide member 4 for electron flow is provided behind the filament 3. The guide member 4 is a conductive metal component. The guide member 4 is installed on the mounting structure of the filament 3. The overall structure is more compact, saving installation space.

[0057] Through the coordination of electric field and structural design, the electron flow emission directionality and beam density are simultaneously improved.

[0058] The guide member 4 is also provided with inclined guide surfaces with adjustable angles on both sides, and the divergence direction of the electron flow can be controlled by adjusting the inclination angle. In the case of multiple filaments 3, the guide member 4 is also provided with more than two inclined guide surfaces with independently adjustable inclination angles, so that the electron flow can be diverged in different directions.

[0059] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A device for enhancing the guidance of electron emission, characterized in that: include: A base, a guide member, and at least one pair of conductive posts insulated from the base, with at least one filament connected between a pair of the conductive posts or two or more pairs of the conductive posts electrically insulated from each other, with each pair of the conductive posts connected to a filament; each pair of the conductive posts is connected to an independent external power supply; a fastener is provided between the guide member and the base for fixed connection between the two; the guide member is a conductive metal plate structure; the guide member and the base are at the same potential; the potential difference between the guide member and the working area is greater than the size of the alternating current required for the filament to thermally emit electrons; and the guide member is provided with at least one guide surface facing the electron flow working area.

2. The device for enhancing the electron emission directivity according to claim 1, characterized in that: The invention also includes at least one supporting structure for providing physical support for the filament, wherein the supporting structure is arranged on the base.

3. The device for enhancing the electron emission guidance according to claim 1, characterized in that: The guide piece is a sheet-like structure and is provided with an avoidance opening to avoid other structural components.

4. The device for enhancing the electron emission guidance according to claim 1, characterized in that: An inclined guide surface is respectively provided on both sides of the guide member, and the inclined guide surfaces on both sides have the same size.

5. The device for enhancing the electron emission directivity according to claim 1, wherein: Two or more inclined guide surfaces with adjustable inclination angles are respectively provided on both sides of the guide member, and the sizes of the inclined guide surfaces are different.

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