High-power field effect transistor with heat dissipation structure

Abstract

The utility model relates to the technical field of field-effect tubes, and particularly discloses a high-power field-effect tube with a heat dissipation structure, which comprises a substrate plate which is of a rectangular plate body structure, openings are arranged at the upper end of the substrate plate at equal intervals, and insulating grids and depletion layers are arranged in the openings of the substrate plate. The substrate plate, the insulating grating and the depletion layer form a main structure of the field effect transistor. According to the high-power field effect transistor with the heat dissipation structure, the metal plate is arranged below the substrate plate, and the heat dissipation fan is arranged in the insulating protective shell, so that an efficient heat dissipation system is formed. The metal plate can quickly absorb and conduct heat on the substrate plate, the cooling fan accelerates air flow and timely takes the heat out of the insulating protective shell, meanwhile, the metal plate is composed of fin plates and a rectangular plate body which are installed at equal intervals, hole structures are formed in the fin plates at equal intervals, air can conveniently penetrate through holes to take away the heat, the cooling efficiency is improved, and the service life is prolonged. And the working temperature of the field effect transistor is effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to field effect tube technical field, concretely is a high -power field effect tube with heat dissipation structure. BACKGROUND

[0002] Field effect tube is an important electronic device, is widely used in various electronic equipment, in the operation process of high -power field effect tube can produce a large amount of heat, if not in time heat dissipation, can lead to field effect tube performance decline, short life even damage, even cause safety problem, the performance of field effect tube directly influences the overall operation efficiency and reliability of equipment. With the continuous development of science and technology, the performance requirement of field effect tube is higher and higher, especially in high -power application, field effect tube needs to have higher power density and stability.

[0003] The traditional heat dissipation mode is mainly passive heat dissipation through the heat dissipation fin, and the heat dissipation efficiency and heat dissipation uniformity are difficult to change with the power of field effect tube, so that the temperature in the field effect tube is excessively accumulated, and the heat is taken away by relying on the natural convection and thermal radiation of air, and the heat dissipation effect is low, which is difficult to meet the heat dissipation effect. UTILITY MODEL CONTENT

[0004] The utility model discloses a high -power field effect tube with heat dissipation structure to solve the traditional heat dissipation structure in the background art above is difficult to cooperate with the power of field effect tube, so that the temperature in the field effect tube is excessively accumulated, and the heat is taken away by relying on the natural convection and thermal radiation of air, and the heat dissipation effect is low, which is difficult to meet the heat dissipation effect problem.

[0005] To achieve the above object, the utility model provides the following technical scheme: a high -power field effect tube with heat dissipation structure, including substrate board, it is set as rectangular plate body structure, the substrate board upper end equidistantly is provided with the opening, and the opening in substrate board installs insulating grid and depletion layer, substrate board, insulating grid and depletion layer constitute the main structure of field effect tube;

[0006] The insulating grid and the upper end surface of depletion layer are respectively provided with an oxide layer, and one gate electrode is respectively arranged on the two sides of the oxide layer, the gate electrode is arranged on the upper end of the depletion layer and the insulating grid, and the gate electrode is arranged on the upper end of the substrate board, the upper surface of the substrate board is symmetrically provided with an insulating column, and the top end of the insulating column is connected with a partition plate.

[0007] The substrate plate is installed on the upper end of the insulating plate, and a metal plate is installed in the insulating plate, the metal plate is below the substrate plate, and an insulating coating is laid between the substrate plate and the metal plate, a rectangular groove is arranged on the upper end of the insulating plate, and an insulating protective shell is installed in the rectangular groove of the insulating plate, a rectangular hole is symmetrically arranged on the side wall of the insulating protective shell, a filter screen one is installed in the rectangular hole of the insulating protective shell, a positioning pipe is installed on the upper end of the insulating protective shell, and a heat dissipation fan is installed in the positioning pipe.

[0008] The heat dissipation fan is arranged to increase the air flow speed and facilitate heat dissipation.

[0009] Preferably, the insulating grid is arranged between the two depletion layers, and the depletion layers and the insulating grid are arranged alternately.

[0010] The above technical scheme is adopted, and the alternating arrangement helps to form the core electric field structure of the field effect tube.

[0011] Preferably, a positioning pipe is arranged above the isolation plate, and the positioning pipe penetrates the insulating protective shell, the insulating protective shell is arranged as a U-shaped shell structure, and a strip-shaped opening is symmetrically opened in the insulating protective shell.

[0012] The positioning pipe arranged above the isolation plate facilitates the installation of the heat dissipation fan.

[0013] Preferably, a grid plate is installed in the strip-shaped opening of the insulating protective shell, the grid plate is arranged adjacent to the side wall of the substrate plate, and a filter screen two is installed in the grid plate.

[0014] The above technical scheme is adopted, and the grid plate installed in the strip-shaped opening of the insulating protective shell is used to increase the filtering structure.

[0015] Preferably, the filter screen two and the filter screen one are arranged in parallel, and the filter screen two and the filter screen one are both in a mesh structure.

[0016] The above technical scheme is adopted, and the parallel arrangement of the filter screen two and the filter screen one can effectively filter dust and impurities in the air to prevent them from entering the field effect tube.

[0017] Preferably, equidistant through holes are arranged in the insulating plate, and the holes of the insulating plate are aligned with the holes of the metal plate.

[0018] The above technical scheme is adopted, and the holes in the insulating plate are increased to increase the range of air flow.

[0019] Preferably, the metal plate is composed of equidistantly installed fin plates and a rectangular plate body, and the fin plates of the metal plate are equidistantly provided with hole structures.

[0020] The technical scheme is adopted, the hole is increased, the heat dissipation area is facilitated to be increased, and the device is facilitated to perform efficient heat dissipation treatment.

[0021] Compared with the prior art, the high-power field effect tube with the heat dissipation structure has the advantages that:

[0022] 1. The metal plate can quickly absorb and conduct heat on the substrate plate, the heat dissipation fan accelerates air flow, and heat is taken out of the insulation protective shell in time, the metal plate is composed of the equally spaced fin plates and the rectangular plate body, and the holes are equally arranged in the fin plates, air passes through the holes to take away heat, the heat dissipation efficiency is improved, the heat dissipation demand of the high-power field effect tube under high load is better met, the working temperature of the field effect tube is effectively reduced, performance degradation and service life shortening caused by overheating are avoided, and the like.

[0023] 2. The rectangular holes and the strip-shaped openings in the side wall of the insulation protective shell are respectively provided with the filter screen one and the filter screen two, the filter screen one and the filter screen two are parallel and are both mesh structures, dust and impurities in air can be effectively filtered, the field effect tube is prevented from being entered into the field effect tube, heat dissipation failure or electrical performance degradation caused by dust accumulation is avoided, the maintenance cost and the failure probability of the equipment are reduced, the insulation coating is arranged between the substrate plate and the metal plate, the insulation column is connected with the isolation plate at the top end, the insulation protective shell also has the isolation effect, short circuit, breakdown and the like caused by electric leakage of the field effect tube in the working process are effectively prevented, the safety and the stability of the field effect tube are improved, and the field effect tube can reliably operate under the working condition of high voltage and large current. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a whole external three-dimensional structure schematic view of the utility model;

[0025] Figure 2 It is a whole internal front cross-sectional three-dimensional structure schematic view of the utility model;

[0026] Figure 3 It is a substrate plate and insulation plate installation three-dimensional structure schematic view of the utility model;

[0027] Figure 4 It is an insulation protective shell internal side cross-sectional three-dimensional structure schematic view of the utility model;

[0028] Figure 5 It is an insulation protective shell and positioning pipe installation three-dimensional structure schematic view of the utility model;

[0029] Figure 6 It is an insulation plate and metal plate installation three-dimensional structure schematic view of the utility model.

[0030] In the figure: 1, substrate plate; 2, insulating grid; 3, depletion layer; 4, oxidation layer; 5, gate; 6, insulating column; 7, isolation plate; 8, insulating protective shell; 9, filter screen one; 10, grid plate; 11, filter screen two; 12, positioning tube; 13, heat dissipation fan; 14, insulating plate; 15, metal plate. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0032] Please refer to Figures 1-6 The utility model provides a kind of technical scheme: a high-power field effect tube with heat dissipation structure, including substrate plate 1, insulating grid 2, depletion layer 3, oxidation layer 4, gate 5, insulating column 6, isolation plate 7, insulating protective shell 8, filter screen one 9, grid plate 10, filter screen two 11, positioning tube 12, heat dissipation fan 13, insulating plate 14 and metal plate 15;

[0033] Wherein, substrate plate 1, it is set to rectangular plate body structure, and the equal interval of substrate plate 1 upper end is provided with opening, and insulating grid 2 and depletion layer 3 are installed in the opening of substrate plate 1, and substrate plate 1, insulating grid 2 and depletion layer 3 constitute the main structure of field effect tube;

[0034] Insulating grid 2 and depletion layer 3 upper end are respectively equipped with an oxidation layer 4, and one gate 5 is respectively installed on the two sides of oxidation layer 4, gate 5 is installed on the upper end of depletion layer 3 and insulating grid 2, and gate 5 is installed on the upper end of substrate plate 1, and the upper surface of substrate plate 1 is symmetrically installed with insulating column 6, and insulating column 6 top end is clamped and connected with isolation plate 7, and insulating grid 2 is arranged in the middle of two depletion layers 3, and depletion layer 3 and insulating grid 2 are alternately arranged, positioning tube 12 is arranged above isolation plate 7, and positioning tube 12 penetrates insulating protective shell 8, and insulating protective shell 8 is set to U-shaped shell structure, and there is a strip-shaped opening in the symmetric opening of insulating protective shell 8, and grid plate 10 is installed in the strip-shaped opening of insulating protective shell 8, and grid plate 10 is adjacent to the side wall surface of substrate plate 1, and filter screen two 11 is installed in grid plate 10, and filter screen two 11 and filter screen one 9 are parallelly arranged, and filter screen two 11 and filter screen one 9 are both in mesh structure;

[0035] The Figures 1-6 As shown in the drawings, substrate plate 1 is used as the basic structure of field effect tube when in use, which provides stable support for the whole field effect tube, and insulating grid 2 and depletion layer 3 are arranged in a specific way, such asFigures 2-3 As shown, the insulating grid 2 is arranged alternately between the two depletion layers 3, which helps to form the core electric field structure of the field effect tube;

[0036] The oxide layer 4 covers the upper end surface of the insulating grid 2 and the depletion layer 3, which plays a protective and isolating role. The gate 5 is installed on both sides of the oxide layer 4. By controlling the voltage of the gate 5, the conductive performance of the field effect tube can be changed. The insulating column 6 is symmetrically installed on the upper surface of the substrate plate 1, and the top end of the insulating column 6 is clamped and connected to the isolation plate 7, which further enhances the insulation performance of the field effect tube. The filter screen one 9 and the filter screen two 11 inside the grid plate 10 are parallel to each other. When the cooling fan 13 receives power and starts, the airflow generated by the working of the cooling fan 13 flows to the working part of the field effect tube. At the same time, the air in the insulating protective shell 8 forms a circulation under the action of the fan, further improving the heat dissipation efficiency and accelerating the air flow, so as to take away the heat generated by the field effect tube. The airflow flows outwards through the filter screen one 9 and the filter screen two 11, which are parallel to each other and have a mesh structure. The parallel structure can filter impurities in the air and prevent dust and other impurities from entering the insulating protective shell 8, thereby affecting the heat dissipation effect;

[0037] The substrate plate 1 is installed on the upper end of the insulating plate 14, and the metal plate 15 is installed in the insulating plate 14. The metal plate 15 is below the substrate plate 1, and an insulating coating is laid between the substrate plate 1 and the metal plate 15. The upper end of the insulating plate 14 is provided with a rectangular groove, and the insulating protective shell 8 is installed in the rectangular groove of the insulating plate 14. The sidewall of the insulating protective shell 8 is symmetrically provided with a rectangular hole, and the filter screen one 9 is installed in the rectangular hole of the insulating protective shell 8. The positioning tube 12 is installed on the upper end of the insulating protective shell 8, and the cooling fan 13 is installed in the positioning tube 12. The insulating plate 14 is provided with equidistant through holes, and the holes of the insulating plate 14 are aligned with the holes of the metal plate 15. The metal plate 15 is composed of equidistantly installed fin plates and rectangular plate bodies, and the fin plates of the metal plate 15 are equidistantly provided with hole structures;

[0038] The specific embodiments of the present application are described in detail in conjunction with the drawings of the specification Figures 1-6 As shown, the insulating plate 14 and the metal plate 15 are spliced to form a structure. The fin plates arranged inside the metal plate 15, such as Figures 2-4As shown, the fin hole of the metal plate 15 is aligned with the hole of the insulating plate 14, and the hole in the insulating plate 14 is matched, so that the external air flow is increased to increase the air contact heat dissipation area, wherein the insulating protective shell 8 arranged on the upper end of the insulating plate 14 is used to protect the substrate plate 1 arranged on the upper end of the metal plate 15, and the insulating coating on the bottom end of the substrate plate 1 and the surface of the metal plate 15 is used to isolate the current transmission, while facilitating heat transmission, effectively preventing the field effect tube from short circuit, breakdown and other failures due to leakage during operation, improving the safety and stability of the field effect tube, and enabling the field effect tube to reliably operate under high voltage and large current working conditions.

[0039] The substrate plate 1, the insulating grid 2, the depletion layer 3, the oxide layer 4 and the gate 5 constitute an insulating coating on the substrate plate 1 to transmit heat of the field effect tube to the metal plate 15, and the heat dissipation is realized by air circulation in the insulating protective shell 8, the heat dissipation fan 13 and the filter screen one 9 and the filter screen two 11, and the electrical performance and stability of the field effect tube are ensured by the insulating structure.

[0040] Working principle: when the high-power field effect tube with the heat dissipation structure is used, the substrate plate 1 serves as a basic structure of the field effect tube and provides stable support for the entire field effect tube, the insulating grid 2 and the depletion layer 3 are arranged in an alternating manner and help to form the core electric field structure of the field effect tube, the oxide layer 4 covers the upper end surfaces of the insulating grid 2 and the depletion layer 3 and plays a protection and isolation role, the gate 5 is arranged on both sides of the oxide layer 4, the conductivity of the field effect tube can be changed by controlling the voltage of the gate 5, the metal plate 15 is arranged below the substrate plate 1, the heat generated by the field effect tube is transmitted to the metal plate 15 through the insulating coating, the holes on the surface of the fin in the metal plate 15 facilitate the increase of the heat dissipation area, air circulation is facilitated, the heat dissipation fan 13 arranged in the positioning tube 12 blows air to the field effect tube when working, the air flow carries away heat, at the same time, the air flow passes through the filter screen one 9 and the filter screen two 11 and is discharged to the outside, the heat generated by the high-power field effect tube during operation is quickly dissipated, and the practicability of the whole is improved.

[0041] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A high-power field effect tube with heat dissipation structure, comprising: a substrate plate (1) arranged as a rectangular plate structure, an opening being provided equidistantly at the upper end of the substrate plate (1), and an insulating grid (2) and a depletion layer (3) being installed in the opening of the substrate plate (1), the substrate plate (1), the insulating grid (2) and the depletion layer (3) constituting the main structure of the field effect tube; characterized in that one oxidation layer (4) is installed respectively on the upper end face of the insulating grid (2) and the depletion layer (3), one gate (5) is installed respectively on the two sides of the oxidation layer (4), the gate (5) is installed on the upper end of the depletion layer (3) and the insulating grid (2), and the gate (5) is installed on the upper end of the substrate plate (1), and the insulating column (6) is symmetrically installed on the upper surface of the substrate plate (1), and the isolation plate (7) is clamped and connected to the top end of the insulating column (6); the substrate plate (1) is installed on the upper end of the insulating plate (14), the metal plate (15) is installed in the insulating plate (14), the metal plate (15) is below the substrate plate (1), an insulating coating is laid between the substrate plate (1) and the metal plate (15), a rectangular recess is provided at the upper end of the insulating plate (14), the insulating protective shell (8) is installed in the rectangular recess of the insulating plate (14), the rectangular hole is symmetrically provided on the side wall of the insulating protective shell (8), the filter screen one (9) is installed in the rectangular hole of the insulating protective shell (8), the positioning pipe (12) is installed on the upper end of the insulating protective shell (8), and the heat dissipation fan (13) is installed in the positioning pipe (12).

2. The high-power field effect tube with heat dissipation structure according to claim 1, characterized in that: The insulating grid (2) is arranged in the middle of the two depletion layers (3), and the depletion layers (3) and the insulating grid (2) are arranged alternately.

3. The high-power field effect tube with heat dissipation structure according to claim 1, characterized in that: The positioning pipe (12) is arranged above the isolation plate (7), and the positioning pipe (12) penetrates the insulating protective shell (8), the insulating protective shell (8) is arranged as a U-shaped shell structure, and the insulating protective shell (8) is symmetrically opened to a strip-shaped opening.

4. The high-power field effect tube with heat dissipation structure according to claim 1, characterized in that: The grid plate (10) is installed in the strip-shaped opening of the insulating protective shell (8), the grid plate (10) is arranged adjacent to the side wall of the substrate plate (1), and the filter screen two (11) is installed in the grid plate (10).

5. The high-power field effect tube with heat dissipation structure according to claim 4, characterized in that: The filter screen two (11) and the filter screen one (9) are arranged in parallel, and both the filter screen two (11) and the filter screen one (9) are in a mesh structure.

6. The high-power field effect tube with heat dissipation structure according to claim 1, characterized in that: The insulating plate (14) is equidistantly provided with through holes, and the holes of the insulating plate (14) are aligned with the holes of the metal plate (15).

7. The high-power field effect tube with heat dissipation structure according to claim 6, characterized in that: The metal plate (15) is composed of equidistantly installed fin plates and a rectangular plate body, and the fin plates of the metal plate (15) are equidistantly provided with hole structures.

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